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query stringlengths 1 13.4k | pos stringlengths 1 61k | neg stringlengths 1 63.9k | query_lang stringclasses 147
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Evaluation of carbon dynamics is of great concern worldwide in terms of climate change and soil fertility. However, the annual CO 2 flux and the effect of land management on the carbon budget are poorly understood in Sub-Saharan Africa, owing to the relative dearth of data for in situ CO 2 fluxes. Here, we evaluated se... | Understanding the effects of stand age and forest type on soil respiration is crucial for predicting the potential of soil carbon sequestration. Thus far, however, there is no consensus regarding the variations in soil respiration caused by stand age and forest type. This study investigated soil respiration and its tem... | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 9,500 |
The δ13C value of the dissolved inorganic carbon in the surface waters of the Pacific Ocean has decreased by about 0.4 per mil between 1970 and 1990. This decrease has resulted from the uptake of atmospheric CO2 derived from fossil fuel combustion and deforestation. The net amounts of CO2 taken up by the oceans and rel... | Soil carbon, a major component of the global carbon inventory, has significant potential for change with changing climate and human land use. We applied the Century ecosystem model to a series of forest and grassland sites distributed globally to examine large-scale controls over soil carbon. Key site-specific paramete... | Natural compounds found in mangosteen peel such as squalene and α-cubebene were proven to exhibit antimicrobial, antibacterial and anticancer activity for cancer disease treatment. Supercritical Carbon Dioxide (SC-CO2) extraction process was conducted at constant flowrate of 24 mL/min within 40 minutes and by varying t... | eng_Latn | 9,501 |
This research report is an initial assessment of current vegetation maintenance practices in bioswales, wetponds, and roadside ditches. Through the use of interview surveys and a literature review, this report has compiled empirical evidence to evaluate the effects of different maintenance practices, particularly mowin... | This paper discusses aspects of grass vegetation in relation to soil erosion control. By means of a literature research, four options for using grass vegetation were recognized, each having its own requirements concerning maintenance, vegetation characteristics and field layout. The main filter mechanisms, application ... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,502 |
Removal of organic contaminants from soil by high temperature (circa 900°C) incineration also destroys soil structure, removes all soil organic matter, sterilizes the soil, removes some fine particulates, alters the crystalline structure of soil clay minerals, and adds salts and alkalinity. The resulting soil ash is in... | The filling of dry quarries in coastal areas with sediments dredged in seaports represents a potentially interesting method of recycling of these materials. However, this recycling requires the prior carrying out of an Environmental Risk Assessment of the scenario concerned. For this, the question arose as to the type ... | Distillation at an infinite reflux ratio in combination with an infinite number of trays has been investigated. | eng_Latn | 9,503 |
Modern agriculture involves mechanized operations which affect crop growth and yields through changes in the soil environment. Field research to study the phenomena involved in the soil-machine-crop system is usually site-specific with respect to edaphic, climatic and management factors. Field experiments are often exp... | Summary Compactive processes affect soil hydraulic properties and associated soil water flow. Soil water retention and transport properties are altered in response to changes in pore space geometry. Soil water flow is affected not only by soil hydraulic properties but additionally by the distribution of sources and sin... | A multivariable self-tuning PID (SPID) controller is introduced to robot manipulator control. The control structure is simple, eliminates interactions quite well, and is easy to implement. | eng_Latn | 9,504 |
: This study was a first step in documenting inorganic turbidity impacts on fluridone efficacy when controlling the invasive species curlyleaf pondweed. Turbidity in the water column did not substantially impact aqueous fluridone residues. Without turbidity, fluridone concentrations of 3 to 5 micrograms ai/L for a 56-d... | The turions of Potamogeton crispus L. develop in early summer and function in propagation and dispersal. Under natural conditions during longday periods, an average minimum air temperature of more than 12°C was found to be important for turion formation. Experiments with controlled environments indicate that both tempe... | In recent decades, many perialpine lakes have been affected by oligotrophication due to efficient sewage treatment and by altered water turbidity due to upstream hydropower operations. Such simultaneous environmental changes often lead to public debate on the actual causes of observed productivity reductions. We evalua... | eng_Latn | 9,505 |
This study is part of a European project focused on understanding the biotic and abiotic mechanisms involved in the retention and dissemination of transmissible spongiform encephalopathies (TSE) infectivity in soil in order to propose practical recommendations to limit environmental contamination. A 1-year field experi... | The ecology of soils associated with dead mammals (i.e. cadavers) is poorly understood. Although temperature and soil type are well known to influence the decomposition of other organic resource patches, the effect of these variables on the degradation of cadavers in soil has received little experimental investigation.... | Low extracellular enzyme activity in desert soil can be recovered during the succession of re-vegetation, especially in soils forming under shrubs (microsite soil), which closely reflects desert restoration conditions. However, not much is known about the restoration of soil enzyme activity at these microsites. By usin... | eng_Latn | 9,506 |
ABSTRACT With the aim of studying the statistical properties of the main parameters of marine systems, i.e. biomass estimated by the chlorophyll concentration, N, as dissolved inorganic nitrogen, P, as dissolved inorganic phosphorus, and their space—time variability, the relationships between the ratios themselves have... | Spatial distribution of nutrient and phytoplankton variables is often illustrated using categorical mapping for each variable. However, the assessment of eutrophication cannot be derived from a single parameter since a synthesis of the environmental variables related to eutrophication is required. These shortcomings ar... | Phosphorus (P) is an essential nutrient required by plants for normal growth and development. The availability of P to plants for uptake and utilization is impaired in alkaline and calcareous soil due to the formation of poorly soluble calcium phosphate minerals. Adding fertilizer P at “normal” rates and with conventio... | eng_Latn | 9,507 |
At the same time, the livestock sector has assumed an often unrecognized role in global warming. The Food and Agriculture Organization of the United Nations (FAO), using a methodology that considered the entire commodity chain, estimated that livestock are responsible for 18 percent of greenhouse gas emissions, a large... | This research was done to measure the added value of goat and sheep with cut and carry systemand influencing factors of goat/sheep productivity and to measure the added value of manure to palmproductivity. The research was done in Deli Serdang Regency by determining two districts as researcharea: Tanjung Morawa Distric... | The work presented is a preliminary study for the development of a method for the extraction of pesticides from wax samples by means of superficial fluid extraction. The novelty of the study is the direct extraction of the pesticides from raw wool wax without any cleanup, as direct extraction has been considered almost... | eng_Latn | 9,508 |
Drought-induced tree mortality events are expected to increase in frequency under climate change. However, monitoring and modeling of tree mortality is limited by the high spatial variability in vegetation response to climatic drought stress and lack of physiologically meaningful stress variables that can be monitored ... | Land cover monitoring is a major task for remote sensing. Comparing to traditional methods for forests monitoring which mostly use orthoimages from satellite or aircraft, there are very few researches use forest 3D canopy structure to monitor the forest growth. UAV aerial can be a novel and feasible platform to provide... | Water-saving and drought-resistant rice (WDR) could substantially reduce irrigation water and meanwhile produce higher grain yield compared with paddy rice under water-saving irrigation. The mechanism underlain, however, is yet to be understood. We investigated if improved root traits would contribute to an increase in... | eng_Latn | 9,509 |
BACKGROUND ::: Sotrastaurin (STN), a novel oral protein kinase C inhibitor that inhibits early T-cell activation, was assessed in non-human primate recipients of life-supporting kidney allografts. ::: ::: ::: METHODS ::: Cynomolgus monkey recipients of life-supporting kidney allografts were treated orally with STN alon... | In this issue of Blood , using genetically deficient donor T cells or posttransplant pharmacologic inhibition, Haarberg et al have conclusively demonstrated that protein kinase C (PKC)-θ and PKC-α each contribute to alloreactivity after experimental allogeneic bone marrow transplantation (BMT).[1 | Estimation of carbon and nitrogen stocks is important for quantifying carbon and nitrogen sequestration as well as greenhouse gas emissions and inventorying national carbon and nitrogen balances. For Liaoning province of China, we estimated the vertical distribution of soil organic carbon (SOC), soil total nitrogen (ST... | eng_Latn | 9,510 |
More intensive use of pasture and the transition to organic production are being used to reduce production costs and increase profitability of some small dairy farms in Pennsylvania. Farm simulation, supported by case study farm data, was used to compare the economic benefits and environmental impacts of two grazing-ba... | Greenhouse gas (GHG) emissions from dairy farms are a major concern. Our objectives were to assess the effect of mitigation strategies on GHG emissions and net return to management on 3 distinct farm production systems of Wisconsin. A survey was conducted on 27 conventional farms, 30 grazing farms, and 69 organic farms... | Background ::: Serum calcium (Ca) and inorganic phosphate (Pi) concentrations and calcium-phosphate product (CPP) levels are positively associated with worse outcomes in patients with chronic kidney disease, but there are few data for Pi or Ca and none for CPP in patients with chronic heart failure (CHF). | eng_Latn | 9,511 |
Bioregenerative life support systems have been discussed since the writings of Tsiolkovsky in the early 20th century. Central to the concept is the use of photosynthetic organisms to regenerate air and food. Bioregenerative research expanded rapidly in the 1950s and 60s through the work of Jack Myers and colleagues, an... | The Biomass Production Chamber (BPC) located at Kennedy Space Center, FL, USA provides a large (20 m2 area, 113 m3 vol.), closed environment for crop growth tests for NASA's Controlled Ecological Life Support System (CELSS) program. Since the summer of 1988, the chamber has operated on a near-continuous basis (over 120... | Real-world visual scenes are complex cluttered, and heterogeneous stimuli engaging scene- and object-selective cortical regions including parahippocampal place area (PPA), retrosplenial complex (RSC), and lateral occipital complex (LOC). To understand the unique contribution of each region to distributed scene represen... | eng_Latn | 9,512 |
Canonical correlation analysis was applied to the study of interrelationships between two multivariate datasets, one consisting of available and exchangeable potassium content, and second consisting of pH, hydrolytic acidity, and content of exchangeable aluminum, calcium and magnesium, available phosphorus, and total n... | A study was conducted to determine the distribution of forms of K (water soluble K, exchangeable K, non exchangeable K, and total K) of potassium in some Ghanaian soils occurring along toposequence using standard laboratory procedures. The soils were the Edina, Atabadzi, Benya, Udu and Kakum series (Acrisols), which fo... | Phosphorus (P) is an essential nutrient required by plants for normal growth and development. The availability of P to plants for uptake and utilization is impaired in alkaline and calcareous soil due to the formation of poorly soluble calcium phosphate minerals. Adding fertilizer P at “normal” rates and with conventio... | eng_Latn | 9,513 |
The primary inoculum source of Botrytis cinerea can be eradicated by soil solarization, thus retarding the development of gray mold in many horticultural crops. The effect of soil solarization on the loss of viability of inoculum of B. cinerea buried in sand-mulched soil at different depths was studied in two different... | The relative importance of sclerotia and mycelia of Botrytis cinerea Pers ex Fr. as structures of survival in southeastern Spanish greenhouses was investigated. Sclerotia were not found in the SE region, neither on plant debris nor on living plant material, suggesting it may serve only a minor role in epidemic developm... | The ecology of soils associated with dead mammals (i.e. cadavers) is poorly understood. Although temperature and soil type are well known to influence the decomposition of other organic resource patches, the effect of these variables on the degradation of cadavers in soil has received little experimental investigation.... | eng_Latn | 9,514 |
Structural changes in humic acids extracted from composted mixtures of sesame bark with the paste of olive mill wastewater or exhausted olive cake, were investigated using FTIR spectroscopy and solid state 13C CP/MAS techniques. The C/N ratio and organic matter degradation decreased significantly after 6 months of comp... | In order to decrease the environmental harm produced by the agro industries’ wastes’, an investigation of the co-composting of olive mill waste (olive mill wastewater (OMW), olive mill sludge (OMS)) and wine by-products (grape marc and winery wastewater) was done. Three aerated windrows of variable compositions were pe... | Distillation at an infinite reflux ratio in combination with an infinite number of trays has been investigated. | eng_Latn | 9,515 |
The investigation of hemp crop weediness was carried out at the Upytė Experimental Station of the Lithuanian Research Centre for Agriculture and Forestry in 2014. Bi-factorial trial was carried out: Factor A – variety (A1 – USO 31; A2 – Bialobrzeskie); Factor B – sowing rate (B1 – 45 kg ha -1 ; B2 – 70 kg ha -1 ). Data... | Bioenergy is currently the fastest growing source of renewable energy. Tighter sustainability criteria for the production of vehicle biofuels and an increasing interest in combined heat and power (CHP) production from biomass have led to a demand for high-yielding energy crops with good conversion efficiencies. ::: Ind... | Mungbean sown at four sites in the Punjab on 12 and 24 July gave higher yields than earlier or especially later sowings. A seed rate of 17.5 kg/ha was recommended for July, but 20 kg/ha seed rate is advisable for later sowings. Copyright © 2003 Whurr Publishers Ltd | eng_Latn | 9,516 |
The Italian greenhouse vegetable industry is an important sector that requires thermal energy as much as 0.74 Mtoe, derived mostly from fossil fuels, which corresponds to 2 MtCO2 emissions. The Energy Strategy 2020 of the European Commission calls for increased use of renewable resources in the energy system, thus push... | Novel approaches to practice CO 2 enrichment in greenhouses from the exhaust gas of a biomass heating system are reviewed. General CO 2 enrichment benefits for greenhouse plant production are described along with optimal management strategies to reduce fuel consumption while improving benefits. Alternative and renewabl... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,517 |
Although nitrogen (N) is an essential nutrient that is a key component of intensive irrigated agricultural systems, its management to maximize yields and reduce losses to the environment is difficult. One reason is due to the spatial and temporal variability that affect residual soil nitrate-N (NO 3 -N) and NO 3 -N lea... | It is difficult to quantify nitrogen (N) losses from agricultural systems; however, we can use 15N isotopic techniques to conduct site-specific studies to increase our knowledge about N management and fate. Our manuscript analyzes two reviews of selected 15N isotopic studies conducted to monitor N fate. The mechanistic... | In this paper we prove that every nonlinear ∗ -Lie derivation from a factor von Neumann algebra into itself is an additive ∗ -derivation. | eng_Latn | 9,518 |
The understanding of multiple effects by possible future development is essential for adapted land use planning. This study assessed the potential of land use scenarios for the provision of ecosystem services using local knowledge in two districts of northern Ghana. Local knowledge was gathered through surveys with ext... | In West Africa, agriculture, mainly rainfed, is a major economic sector and the one most vulnerable to climate change. A meta-database of future crop yields, built up from 16 recent studies, is used to provide an overall assessment of the potential impact of climate change on yields, and to analyze sources of uncertain... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,519 |
Differences in functional traits between invasive and native plant species are believed to determine the invasion success of the former. Increasing amounts of anthropogenic nitrogen (N) are continually deposited into natural ecosystems, which may change the relative occurrence of the different N deposition forms (such ... | Humans continue to transform the global nitrogen cycle at a record pace, reflecting an increased combustion of fossil fuels, growing demand for nitrogen in agriculture and industry, and pervasive inefficiencies in its use. Much anthropogenic nitrogen is lost to air, water, and land to cause a cascade of environmental a... | In this paper we prove that every nonlinear ∗ -Lie derivation from a factor von Neumann algebra into itself is an additive ∗ -derivation. | eng_Latn | 9,520 |
The influence of common vole Microtus arvalison processes of nitrogen fixation and denitrification in the soddy-podsolic soil was studied. In the common vole colonies, the level of nitrogen fixation was reliably lower and that of denitrification higher, than in the control soil outside these colonies. Nitrogen-containi... | Rodents affect soil microbial communities by burrow architecture, diet composition, and foraging behavior. We examined the effect of desert rodents on nitrogen-fixing bacteria (NFB) communities by identifying bacteria colony-forming units (CFU) and measuring nitrogen fixation rates (ARA), denitrification (DA), and CO2 ... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,521 |
This chapter focuses on methods for measuring CH(4) exchange between the biosphere and the atmosphere. In the context of the global importance of the biosphere as a source and a sink of atmospheric CH(4,) special emphasis is given to details of gas flux measurements. Due to their widespread use and suitability for targ... | Research highlights: The admixture of fir to pure European beech hardly affected soil-atmosphere CH4 and N2O fluxes but increased soil organic carbon (SOC) stocks at a site in the Black Forest, Southern Germany. Background and objectives: Admixing deep-rooting silver fir has been proposed as a measure to increase the r... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,522 |
Summary The occurrence of asymbiotic N2-fixing azospirilla in the rhizosphere of 16 crop plants, grown in different types of soil, at 2 stages of growth and in root-free soil, was studied. Azospirillum counts varied with kind and age of the plant and with the type of soil. An increased population in the rhizosphere is ... | The survival of Azospirillum brasilense Cd and Sp-245 in the rhizosphere of wheat and tomato plants and in 23 types of plant-free sterilized soils obtained from a wide range of environments in Israel and Mexico was evaluated. Large numbers of A. brasilense cells were detected in all the rhizospheres tested, regardless ... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,523 |
Time delay spectrometry (TDS) is a swept-frequency technique that has proven useful in several ultrasonic applications. We previously have described a system that is easy to replicate with equipment available in most acoustics laboratories. By incorporating quadrature demodulation into the software processing phase dat... | This paper considers the means by which calibration data are used to convert hydrophone output voltage into pressure. Hydrophone frequency responses are complex-valued quantities, and only by correcting for the magnitude and phase variations, is it possible to accurately recover the original pressure waveform. The limi... | Monitoring nitrogen (N) and phosphorous (P) losses on farmland is essential for the prevention of agricultural non-point source pollution (NPS). This study was conducted on typical dry farmland in southern China to determine the effect of conservation tillage and conventional tillage (CT) on soil physical and chemical ... | eng_Latn | 9,524 |
The acetylene inhibition method was used to determine soil denitrification rates of a riparian, meadow, forest, and barren site in the eastern Sierra Nevada. Data were collected from these four subalpine plant communities during dawn-to-dusk measurement periods in June, August, and October in order to examine denitrifi... | The release of water during snowmelt orchestrates a variety of important belowground biogeochemical processes in seasonally snow-covered ecosystems, including the production and consumption of greenhouse gases (GHGs) by soil microorganisms. Snowmelt timing is advancing rapidly in these ecosystems, but there is still a ... | An ultra-fast on-the-fly (UF-OTF) IDLIN technique having 1 mus resolution is developed and used to study gate insulator process dependence of NBTI in silicon oxynitride (SiON) p- MOSFETs. The nitrogen density at the Si-SiON interface and the thickness of SiON layer are shown to impact temperature, time, and field depen... | eng_Latn | 9,525 |
Photosynthetic processes provide environmentally sustainable mechanisms for removal of CO2. Biological systems produce biomass which can act as a reservoir of carbon or as a direct substitute for fossil fuels. Three alternative strategies are examined and compared: Sequestration of carbon by reforestation; growing ener... | Estimation of Production Potential of Short Rotation Forestry On Agricultural Land of Saxony Wael Ali TU Dresden – Institut fur Waldwachstum und forstliche Informatik Introduction Biomass energy represents one of the most promising alternatives, because it is a renewable source that can be produced and used in a clean ... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,526 |
Based on the theories of organic polymer and chemical kinetics, the structure and mass transportation model of slow-release organic carbon-source (SOC) material was developed in this study to reveal and predict the carbon release mechanisms of polymer carbon source, which was feasible for in situ denitrification in nit... | Slow-release microencapsulated N, P, and K fertilizer synthesis was optimized and the products exhaustively characterized. Four NPK formulations with nutrient mass ratios of 1:0:0, 1:1:0, 1:1:1, and 2:1:1 were characterized following European Council Regulation 2003/2003 for fertilizers as well as ICP-AES, 1H-NMR, FT-I... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,527 |
The aim of this study was to assess the seasonal development of the physicochemical (pH, organic C, organic N, extractable P, Ca(2+), Mg(2+)) and biological soil properties (microbial biomass, activities of urease, dehydrogenase and alkaline phosphatase) of the topsoil of mine deposition sites that differed based on th... | Mining causes soil damage and destruction. In the process of removing the desired mineral material, original soils become lost, or buried by wastes. In many countries legislation now requires that surface soils be conserved and replaced, but there is a vast heritage of degraded land left by past mining that requires re... | Background ::: Serum calcium (Ca) and inorganic phosphate (Pi) concentrations and calcium-phosphate product (CPP) levels are positively associated with worse outcomes in patients with chronic kidney disease, but there are few data for Pi or Ca and none for CPP in patients with chronic heart failure (CHF). | eng_Latn | 9,528 |
A simple procedure for mass spectrometric analysis of 15N with a small amount of organic nitrogen is described. Particulate organic nitrogen is converted into N2 by a modified Dumas method, using a catalyst-packed vessel consisting of three concentric quartz tubes. The N2 gas produced is then purified, collected on a m... | Symbioses between chemolithoautotrophic bacteria and the major macrofaunal species found at hydrothermal vents have been reported for numerous sites in the Pacific Ocean. We present microscopical and enzymatic evidence that methylotrophic bacteria occur as intracellular symbionts in a new species of mytilid mussel disc... | It is difficult to quantify nitrogen (N) losses from agricultural systems; however, we can use 15N isotopic techniques to conduct site-specific studies to increase our knowledge about N management and fate. Our manuscript analyzes two reviews of selected 15N isotopic studies conducted to monitor N fate. The mechanistic... | eng_Latn | 9,529 |
Because root turnover represents the major source for building up soil organic matter in ecosystems with high belowground allocation, like grasslands, sensitive analyses on root decomposition rates may contribute to point out the effect of grazing abandonment on soil C and N dynamics. The objective was to detect change... | While fine roots (≤2-mm diameter) are major suppliers of carbon (C) and nitrogen (N) to northern temperate and boreal forest soils, our understanding of how long-term plant and N inputs affect fine root decomposition rates and the amount of root-derived organic matter (OM) stabilized in forest soils is incomplete. We e... | Blunt trauma abdomen rarely leads to gastrointestinal injury in children and isolated gastric rupture is even rarer presentation. We are reporting a case of isolated gastric rupture after fall from height in a three year old male child. | eng_Latn | 9,530 |
Urine was added under controlled conditions to intact turfs taken from long-term permanent pasture on clay loam and sandy loam soils in South West England. Methane exchanges were small ( 50% and the average increase was greater for cow's urine (30.8 mg CO2 m-2 min-1) than for an artificial urine (20.1 mg CO2 m-2 min-1)... | The Intergovernmental Panel on Climate Change methodology estimates that over 50% of total nitrous oxide (N2O) emissions in New Zealand derive from animal excreta-N deposited during grazing. The emission factor for excreta-N as used by this methodology has an important impact on New Zealand’s total N2O inventory. The o... | Agricultural soils contribute towards the emission of methane and nitrous oxide, the two important greenhouse gases causing global warming. Due to the diverse soil, land-use types and climatic conditions, there are uncertainties in quantificatio n of greenhouse gas emission from agricultural soils in India. An inve nto... | eng_Latn | 9,531 |
1. The following species were used for experiment: apple, pear, strawberry, loganberry, raspberry, black currant. 2. The culture medium was cane sugar and the strengths that gave the best germination were as follows: apple 2.5-10 per cent, pear 4-8 per cent, strawberry 8 per cent, loganberry 4 per cent, raspberry 16 pe... | The purpose of these studies has been to stress that certain factors of an artificial environment (such as, the ingredients and pH of the culture medium, temperature, humidity,etc.) definitely influence the behavior of pollens; and, furthermore, that in an understanding of the reactions of pollens to handling (in terms... | There is a paucity of comprehensive air quality data from urban areas in the Middle East. In this study, portable instrumentation was used to measure size-fractioned aerosol number, mass, and black carbon concentrations in Amman and Zarqa, Jordan. Submicron particle number concentrations at stationary urban background ... | eng_Latn | 9,532 |
This review critically examines the role of boron (B) in forests in view of recent findings on B nutrition and the continuing occurrence of B deficiency. Many perceptions about the role of B in plants and its uptake and mobility have been altered since the last review on B in forest trees in 1990. Now there is evidence... | Many forest soils in Finland are poor in boron (B), especially otherwise fertile (nitrogen-rich) soils and peatlands. Boron deficiency causes growth disorders affecting young Norway spruce (Picea abies) stands. We studied the effects of B fertilization on the growth and morphology of Norway spruce seedlings. Boron was ... | The adsorption of Rhodamine B onto CT269DR resin has been studied through static and dynamic experiments. The effects of shaking speed, resin dosage, and pH on adsorption were investigated by stati... | eng_Latn | 9,533 |
ABSTRACT Soil amendment with different organic materials was evaluated in greenhouse experiments for effects on root rot and growth of sugarcane. Materials included composts prepared from cotton gin trash, cottonwood bark, mixed hardwood bark, municipal solid waste, and municipal yard waste; municipal biosolids; and a ... | The supply of composts has increased in many countries due to the enforced diversion from landfill of organic biodegradable wastes. Disposal is often the primary financial and environmental incentive for composting this organic waste, with benefits from low value end-products such as organic soil amendments being a sec... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,534 |
This paper reviews the progress in persistence dynamics of insecticidal proteins released from Bt crops in soil, and mainly summarizes: 1) the detection methods for Bt toxin proteins released from transgenic Bt crops in soil; 2) the persistence, accumulation and degradation of Bt toxin in soil; 3) the mechanism by whic... | Fast popularization and widespread application of transgenic Bt corn have raised the issue of environmental safety.Despite considerable work in this field recently,no consensus on the effects of Bt corn on environmental safety has emerged,indicative of the complexity of this issue.Traditional study on environmental saf... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,535 |
The use of micro-dams in potato furrows is an interesting technology to reduce erosion and runoff in hilly areas. These phenomena are major sources of surface water contamination by nutrients and plant protection products (Gillijns et al., 2005). In 2011 Bayer CropScience set up a trial in collaboration with the Walloo... | Surface irrigation, particularly furrow irrigation, is the most common method of water application into agricultural lands. Despite all its advantages, furrow irrigation has some demerits, such as a potential large volume of runoff losses. In this research, an approach was proposed to reduce runoff losses and to improv... | Surface irrigation, particularly furrow irrigation, is the most common method of water application into agricultural lands. Despite all its advantages, furrow irrigation has some demerits, such as a potential large volume of runoff losses. In this research, an approach was proposed to reduce runoff losses and to improv... | eng_Latn | 9,536 |
In Order To Develop A Cultivation Technique For The Practical Use of Phytoremediation of Diesel-Contaminated Soil, We Evaluated The Rhizodegradation of Diesel-Contaminated Soil Using Italian Ryegrass. Experiments Were Conducted Under Two Different Soil Conditions That Were Expected To Reduce The influence of Diesel On ... | In recent years, economic boom in fast developing countries has been witnessed with spectacular progress in industrialization and concurrent progress in modern agriculture. Such development is however not without any socio-political and environmental side effects. A major concern has been the environmental pollution. I... | Background ::: Serum calcium (Ca) and inorganic phosphate (Pi) concentrations and calcium-phosphate product (CPP) levels are positively associated with worse outcomes in patients with chronic kidney disease, but there are few data for Pi or Ca and none for CPP in patients with chronic heart failure (CHF). | eng_Latn | 9,537 |
The data presented in this article regroup characterisation of organic matter and nutritional composition of 42 organic wastes and residues usually used as substrates for anaerobic digestion. Those wastes have different origins from agro-industrial, agricultural and urban sectors in France including: algae, slaughterho... | In this study, an extensive characterisation of food waste (FW) was performed with the aim of studying the relation between FW characteristics and FW treatability through an anaerobic digestion process. In addition to the typological composition (paper, meat, fruits, vegetables contents, etc) and the physicochemical ch... | Traditional composting systems for biowaste generally produce low quality composts that may endanger recycling. A pilot-scale bioconversion process yielding quality compost and renewable energy was designed and tested. The process consisted of a set of wet physical separation units, composting and anaerobic digestion. ... | eng_Latn | 9,538 |
Biomass production should always follow principles of sustainability. This paper describes some effects of biomass production for energy within environmental, social and economic contexts. Important parameters for comparing different biomasses are energy yields per hectare or CO2 mitigation costs. However, most bio-ene... | We estimate the global bioenergy potential from dedicated biomass plantations in the 21st century under a range of sustainability requirements to safeguard food production, biodiversity and terrestrial carbon storage. We use a process-based model of the land biosphere to simulate rainfed and irrigated biomass yields dr... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 9,539 |
In some crops, row orientation has been shown to influence yield through the effects on soil temperature. There has been no similar work on sugar beet (Beta vulgaris L.); thus, an experiment was conducted from 1992 to 1994 to determine the effects of row orientation on the growth and production of sugar beet in Hungary... | The agriculture sector is embracing energy efficient conservation systems and technological innovations to meet the ever increasing demand for food, fibre, and fuel in tune with the rapidly increasing human population. The genetic modification of plants is one of the technological innovations that is adopted rapidly ac... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,540 |
We began a study, in 1996, to compare ground water quality under irrigated and nonirrigated agriculture, sewered and nonsewered residential developments, industrial, and nondeveloped land uses. Twenty-three monitoring wells were completed in the upper meter of an unconfined sand aquifer. Between 1997 and 2000, sampling... | An analysis of private potable water well data was conducted for seven single family residential developments in southern Chester County, Pennsylvania. Background data were available for 165 wells within the communities when the wells were first drilled in the 1980s and early 1990s. Sampling of 75 wells within these sa... | When used as selective or general contact sprays, dinitro-o-sec-butyl phenol compounds decompose too rapidly to create any problem of residual toxicity. ::: Decomposition of dinitro selectives, like many other herbicides, causes considerable ::: stimulation of crop growth. High cost prevents the use of these compounds ... | eng_Latn | 9,541 |
This paper examines the growth and uptake of phosphorus into algal biofilms in the River Kennet, a lowland chalk (Cretaceous-age) stream in southern England. Algal biofilms were grown on artificial plastic substrates (templates) placed (i) on the riverbed and (ii) within the mid-water column. Experiments were set up to... | The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legac... | In this work we develop the 2D model suggested in [32] in order to study the impact of fibrinogen concentration and the fibrin polymer production rate on clot growth in flow. The model is based on the method of Dissipative Particle Dynamics describing blood plasma flow and platelet suspension and on a system of partial... | eng_Latn | 9,542 |
Carbon conversion efficiencies were determined for the bacterial utilization of lignocellulosic detritus in waters from an estuarine and a freshwater wetland. Conversion efhciencies during bacterial growth on lignocellulose averaged -309’0 in both estuarine (salt marsh) and freshwater (Okefenokec Swamp) samples. Our es... | A process-based carbon gas flux model was developed to calculate total macrophyte and microalgal production, and community and belowground respiration, for a Peltandra virginica dominated tidal freshwater marsh in Virginia. The model was based on measured field fluxes of CO 2 and CH 4 , scaled to monthly and annual rat... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 9,543 |
Soil acidity is one of the major factors limiting soil fertility and crop production in large areas of Ethiopia. A two-month incubation experiment was conducted to evaluate the effects of lime, vermicompost (VC), and chemical phosphorus (P) fertilizer on selected chemical properties of Dystric Nitisols in Ebantu Distri... | Due, in part, to the relative paucity of published comparisons based on field generated data, there is still poor agreement regarding the relative merits of lime requirement indices based on exchangeable Al and those based on pH. The objective of this study was to compare such indices using results obtained from long-t... | Background ::: Serum calcium (Ca) and inorganic phosphate (Pi) concentrations and calcium-phosphate product (CPP) levels are positively associated with worse outcomes in patients with chronic kidney disease, but there are few data for Pi or Ca and none for CPP in patients with chronic heart failure (CHF). | eng_Latn | 9,544 |
Soil microbial biomass content, organic carbonmineralization as well as arginine ammonificationrates were estimated in samples from arable andgrassland soils and carbon dioxide and nitrous oxideemission rates were measured in situ at four sitesalong a catena. Soil microbial biomass contentincreased in the order, maize ... | Reducing the canopy cover (e.g., forest thinning) is one of the most commonly employed forest silvicultural treatments. Trees are partially removed from a forest in order to manage tree competition, thus favoring the remaining and often the most valuable trees. The properties of the soil are affected by forest thinning... | A 49-year-old woman with traumatic brain injury after an automobile accident is found to have raised intracranial pressure, and hyperosmolar therapy is recommended. Hyperosmolar therapy with either hypertonic saline or mannitol reduces intracranial pressure by reducing brain volume. | eng_Latn | 9,545 |
Efficient Grit Collection by Modern Pista Grit Chamber | Various grit collection systems for water and wastewater treatment have been used. In the last decade in Australia the Pista Grit Chamber has become one of the most common systems preferred. Since the first installations in 1974 various attempts have been made by a number of equipment suppliers for a better grit trap. ... | The team at PIPS (Productivity, Irrigation, Pests and Soils project) recently investigated biochar and compost soil amendments to assess its potential for improving the productivity and sustainability of apple orchards. | eng_Latn | 9,546 |
Conversion, GMO crops - UK Soil Association Organic Standards 2005 | A 5-year period is required from the harvest of any previous genetically modified crop before the land where it was grown may become fully organic. Soil Association Organic Standards. Paragraph 3.6.17. | The present paPer studies the transformations that have taken place in the field of intensive agriculture in the province of Almeria. The various factors that have originated the above mentioned transformations, as well as the processes, their innovative characteristics and the extent of their use are presented and dis... | oci_Latn | 9,547 |
Effects of Long-term Organic and Mineral N-fertilisation on Soil Microarthropods in Berlin (Germany), Madrid (Spain) and Tartu (Estonia) | Soil micro-arthropods play an important role in the nutrient cycle of agro-ecosystems and are considered to have a strong impact on microbial activity. The occurance of soil microarthropods was investigated in the International Organic Long-Term Field Experiment (IOSDV). The investigation took place in the experimental... | Different systems act as one of the most promising forms of integration in the urban planning structure. In the process of formation of plans for social and economic development of major cities more often, there is a situation, when the improvement of resources efficiency needs not just a concentration of effort, but a... | eng_Latn | 9,548 |
Scaling up our understanding of non-consumptive effects in insect systems | Non-consumptive effects (NCEs) of predators on prey is an important topic in insect ecology with potential applications for pest management. NCEs are changes in prey behavior and physiology that aid in predation avoidance. While NCEs can have positive outcomes for prey survival there may also be negative consequences i... | This paper models an electricity producing firm's ex ante choice of technology for a generating plant in a way that recognizes that planned output is best described by a load increment composed of an instantaneous rate and a time duration and that the cost of capital equipment is dependent on the size and fuel efficien... | eng_Latn | 9,549 |
Expanded dengue syndrome in secondary dengue infection: A case of biopsy proven rhabdomyolysis induced acute kidney injury with intracranial and intraorbital bleeds | Dengue fever is endemic in the Indian subcontinent and can have myriad presentations. The term expanded dengue syndrome (EDS) is used for atypical manifestations in dengue fever. We present a rare case of EDS in a patient with secondary dengue infection who developed rhabdomyolysis induced acute kidney injury (RAKI) al... | ABSTRACTMany surface soils in Japan may experience more frequent and intense drying–rewetting (DRW) events due to future climate changes. Such DRW events negatively and positively affect microbial biomass carbon (MBC) through microbial stress and substrate supply mechanisms, respectively. To assess the MBC immediately ... | eng_Latn | 9,550 |
Two new combinations in the South Sudanese flora | Two new combinations are made in preparation for a forthcoming checklist of the plants of Sudan and South Sudan: Dicliptera lanceolata (Lindau) I. Darbysh. & Kordofani (Acanthaceae), a South Sudan endemic, and Campylospermum likimiense (De Wild.) I. Darbysh. & Kordofani (Ochnaceae), recorded from South Sudan and Ethiop... | We investigated the sediment-seawater solute flux at five sites in the polluted Avon-Heathcote Estuary, New Zealand, to provide a point of comparison for future studies of the effects of the closure of a major wastewater outfall into the estuary. Sediments collected in winters 2007 and 2008, and summer 2008, ranked con... | eng_Latn | 9,551 |
Effects of intercropping peanut on soil nutrient status and microbial activity within young Camellia oleifera plantation | ABSTRACTA two-year field trial was conducted to compare the effects of intercropping with peanut and Camellia oleifera monoculture on soil characteristics, nutrients status as well as soil microbial activity in a young C. oleifera plantation on latosolic red soil. Compared with C. oleifera monoculture, the soil porosit... | During the past three decades, the rice-wheat cropping systems (RWCS) ::: in India significantly contributed to enhancing food grain production and ::: achieving food self-sufficiency and food security. The production system ::: now is under threat due to stagnating or declining total factor ::: productivity. Legumes c... | eng_Latn | 9,552 |
Chemical reduction of an insoluble higher oxide of manganese by plant roots | Abstract Sterile and non‐sterile roots of sunflower seedlings were shown to reduce an insoluble higher oxide of Mn directly. Non‐sterile roots of 12 other plant species were also shown to be capable of the same reduction. | Abstract This paper involves a comparative analysis of cross-sectional changes at selected reaches of a lowland river, flowing through the areas of mineral and organic soils. The comparisons were made at the background of design and execution assumptions from the period 1967–1971. Main processes, responsible for the ob... | eng_Latn | 9,553 |
Water Pollution Caused by Washing Powder Including Phosphorus | This paper mainly gives a review on the concept of the eutrophication in water system and the pecuniary loss caused by it (e. g. Red Tide, Water Bloom); Then it puts forward the reason why we must ban phosphorus, the function that we add phosphorus into traditional synthetic washing powder, and the course of eutrophica... | Abstract Lineal extension of Gaeumannomyces graminis var. tritici hyphae along roots of intact wheat plants growing in soils was measured. Hyphal growth rates were lower in soils treated with NH 4 + -N than with NO 3 − -N. In a soil that is suppressive to the take-all disease, the controlling influence of NH 4 + -N was... | eng_Latn | 9,554 |
Evaluation of Testing Environments in Winter Wheat | Testing environmental quality were evaluated on six sets of environments from 1985 through 1989 and nine sets of environments from 1990 through 1994. Ten or twelve genotypes were grown in each set and in each year. The evaluative model proposed by Brown K D is a linear regression. The results suggest that a set has a h... | Abstract : Experimentation Data Process: *Lockheed Martin experimentation at the Center for Innovation, -Constructive Simulations, -Human-in-the-Loop Simulation; *Two main issues; -Data Extraction/Storage, -Data Manipulation/Reduction; *Early Experimentation (2006 Processes), -Post Run extraction, -Manual reduction/con... | eng_Latn | 9,555 |
Non-chemical approaches to weed control in horticulture | Concern about herbicide safety has renewed interest in non-chemical systems of weed control. Alternative approaches for dealing with weeds can be broadly grouped into cultural and biological methods. Some of the options available for controlling weeds without the use of herbicides are discussed. | During the past three decades, the rice-wheat cropping systems (RWCS) ::: in India significantly contributed to enhancing food grain production and ::: achieving food self-sufficiency and food security. The production system ::: now is under threat due to stagnating or declining total factor ::: productivity. Legumes c... | eng_Latn | 9,556 |
Alternaria alternata in cotton (Gossypium hirsutum) cv. Acala: Effects on gas exchange, yield components and yield accumulation | The effect ofAlternaria alternata on gas exchange proceses, on total yield and on yield components in cottonGossypium hirsutum cv. Acala SJ-2, was examined under field conditions. Variations in disease severity levels were achieved by using three fungicide treatments (Fentin Acetate). Disease developed more rapidly on ... | Outline Motivation & background work at the JRC EU agricultural emissions in perspective Methodology: CAPRI Model Scenario assumptions Main results Limitations Conclusions Conclusions •Without further action, agricultural GHG emissions in the EU-28 are projected to decrease by 2.3% by 2030 compared to 2005. •The... | eng_Latn | 9,557 |
UTILIZING WASTE AND RECYCLED MATERIALS IN FLY ASH FIBER-REINFORCED MORTAR | This experimental investigation was conducted to determine the effect of fiber type and mixing proportion on the strength and durability of fiber-reinforced mortar with fly ash. The compressive strength was not significantly affected by sand-binder ratio, but flexural strength increased as sand-binder ratio increased. ... | Abstract In microcosms containing soil from a mixed deciduous forest, we examined the nutrient release from feces of phytophagous insects through coprophagous behavior of saprophagous soil animals during 12 weeks of decomposition. The decomposition of feces of Operophthera fagata (Lepidoptera: Geometridae) fed on beech... | yue_Hant | 9,558 |
Enumerating low densities of genetically engineered Erwinia carotovora in soil. | An inexpensive, quantitative, and sensitive technique was developed for detection of genetically engineered Erwinia carotovora in soil samples. Enrichment media, antibiotic resistance, and most probable number (MPN) analysis were used to enumerate as few as 1 to 10 target cells/10 g soil. The MPN technique recovered si... | Abstrcat Taking a sand-grown plant garden for example, the garden's natural conditions and land use actuality are analyzed, and the landscape ecological construction goal of the garden is proposed. A study is conducted on the ecological design of the garden landscape. | eng_Latn | 9,559 |
Soil Organic Carbon Accumulation in Post-Agricultural Soils under the Influence Birch Stands | The aim of this study was to demonstrate the effects birch renewal on the soil organic carbon accumulation and on dehydrogenase activity. We selected 12 research plots with birch stands of different ages (1–4 years, 5–8 years, 9–12 years, and 13–17 years) to determine soil texture, pH, total carbon and nitrogen levels,... | Background ::: Smallholders have begun to take advantage of a growing pool of investment in climate change mitigation. Meanwhile, early movers in this area are working to develop innovative models that will allow projects to be financially sustainable and scalable while benefiting local actors. This study focuses on tw... | eng_Latn | 9,560 |
Optimalizace svozu komunálního odpadu ve vybrané firmě | The final thesis deals with optimization of rubbish removal for Hradecke služby a.s. Essential legislative, technical and technological means used in waste management are mentioned here. Moreover, methods of operational research used in removal tasks are mentioned. An important part of the work is an example of optimiz... | Phyllostachys heterocycls cv.pubescens forest is an important forest resource in south China.The result of balanced fertilization in the intensively bred Phyllostachys heterocycls cv.pubescens plantations showed that the balanced fertilization could significantly increase the DBH of the plants,improve the quality of ba... | ces_Latn | 9,561 |
Effects of Irrigation Modes on Photosynthetic Characters and Water Use Efficiency of Soybean | Three irrigation modes of uniform irrigation(UI),fixed furrow irrigation(FFI)and alternative furrow irrigation(AFI)were operated at flowering,podding and seed filling of soybean,with single furrow irrigation amount of 60,45 and 30 mm respectively,with no irrigation as control.Irrigation increased photosynthetic rate an... | Abstract Ramirez, R.G., Foroughbackhch, R., Hauad, L., Alba-Avila, J., Garcia-Castillo, C.G. and Espinosa-Vazquez, M. 2001. Seasonal dynamics of dry matter, crude protein and cell wall digestion in total plant, leaves and stems of common buffelgrass (Cenchrus ciliaris). J. Appl. Anim. Res., 19: 209–218. This study was ... | eng_Latn | 9,562 |
Electrode with improved performance strength | Electrode (El) with improved power resistance comprising an electrode and a metal different from the metal electrode further electrode material, wherein - the electrode (El) is 0.001 to 20 atomic percent of the other electrode material, - the electrode metal and the further electrode material present in homogeneous mix... | Summary ::: ::: The addition of 0.07 per cent Fe or more in the form of polycations decreased the total area of cracks and increased the number of transmissive pores of soils after simulated rainfall and drying. This resulted in increased per cent emergence and lower mean day of emergence of wheat plants. Per cent emer... | eng_Latn | 9,563 |
Source Assessment Sampling System (SASS) Versus Dilution Tunnel Sampling | Two sampling methods have received increased attention recently because of their ability to collect particulate and organic emissions from combustion sources (Huisingh et al., 1978; Lewtas, in press). One method of sampling, represented by the Source Assessment Sampling System (SASS), is designed to collect and size-cl... | In order to definite the appropriate irrigation quota and water percentage of well-canal irrigation quota,with the wheat varieties yumai57 as the materials,the effects of irrigation quota and proportion of well-canal water on tiller number,dry matter amount,plant height,yield and soil salinity in the people's Shengliqu... | kor_Hang | 9,564 |
Cultivar Difference in Mycorrhizal Symbiosis in Strawberry Plants Grown by Capillary Watering Method | The means of inoculation with arbuscular mycorrhizal (AM) fungi [Gigaspora margarita, Glomus fasciculatum, Gl. mosseae, Gl. sp. R10, Gl. aggregatum] were investigated in four strawberry (Fragaria × ananassa Duch., cv. Tochiotome, Toyonoka, Nyoho and Nohime) cultivars in Japan. Twelve weeks after inoculation, growth par... | ABSTRACTMany surface soils in Japan may experience more frequent and intense drying–rewetting (DRW) events due to future climate changes. Such DRW events negatively and positively affect microbial biomass carbon (MBC) through microbial stress and substrate supply mechanisms, respectively. To assess the MBC immediately ... | eng_Latn | 9,565 |
UV-specific p53 and PTCH mutations in sporadic basal cell carcinoma of sun-exposed skin. | UVB irradiation is known to produce DNA damage at mutation hotspots in the p53 tumor suppressor gene, leading to the development of skin cancers. Mutations in the PTCH tumor suppressor gene, which is known to be responsible for the development of nevoid basal cell carcinoma syndrome, have also been identified in sporad... | An agreement between the governments of the province of Quebec and the State of Vermont calls for a 41% decrease in phosphorus (P) loads reaching Missisquoi Bay, the northern portion of Lake Champlain. The agreement particularly targets the agricultural sector, since 80% of non-point source P inputs to the bay are asso... | eng_Latn | 9,566 |
Kinetics of non-enzymatic oxidation reactions: browning in white wines | Abstract The influence of different post-fermentation treatments intended to afford protection against non-enzymatic browning was studied in a series of varietal wines produced on an industrial scale using a sequential association of yeasts. In view of the complexity of the browning reactions and the difficulty in eluc... | Earthworm digested wastes (vermicompost) are being produced in increasing quantities and there is much interest in developing new markets for these products. In this paper, the responses of wheat (Triticum aestivum var. Einstein and Xi19) to vermicompost additions and to combinations of vermicompost and inorganic NPK f... | eng_Latn | 9,567 |
Immediate and subsequent effects of drying and rewetting on microbial biomass in a paddy soil | ABSTRACTMany surface soils in Japan may experience more frequent and intense drying–rewetting (DRW) events due to future climate changes. Such DRW events negatively and positively affect microbial biomass carbon (MBC) through microbial stress and substrate supply mechanisms, respectively. To assess the MBC immediately ... | The physicochemical characteristics of eight samples of lifin, a traditional maize market flour of Benin, were determined. They had very similar proximate composition and a median particle size (PSm) under 200 μm; four, having a PSm under 180 μm, can be considered as fine or very fine and should be preferred by consume... | eng_Latn | 9,568 |
Produtividade da alface americana submetida a diferentes lâminas de irrigação | With the aim of minimizing the difficulties faced by the producers on cultivating the crisphead lettuce (Lactuta sativa L), specifically those related to the lack of technical information about the quantity of water to be applied, a study was made in order to determine the effect of various water depths on crisphead le... | Arising from T. F. Keenan et al. , 324–327 (2013)10.1038/nature12291 ::: Forests in North America and northern Europe increased their water-use efficiency (WUE)—the ratio of photosynthetic CO2 uptake to water loss through evapotranspiration—over the last two decades, according to a recent Letter1. Keenan et al. attribu... | por_Latn | 9,569 |
A Review on Bio-macromolecular Imprinted Sensors and Their Applications | Abstract Molecular imprinted technology has been maturely applied to analyze and detect small molecular organic compounds, also increasingly applied in biological macromolecules assay. This review addresses the perspective of bio-macromolecular imprinted sensors and their applications, including optical molecular impri... | Purpose ::: Shifts of microbial biomass and functional diversity under different vegetation patterns can impact the soil processes, and the specific knowledge about this can be used to develop sound vegetation restoration strategies. This study was devoted to examine the effects of different vegetation patterns on micr... | eng_Latn | 9,570 |
Effect of plastic covering and nitrogen fertilization on yield and quality of early potatoes | The effect of agrotextile covering and the nitrogen fertilization (0, 30, 60, 90 kg N ha) on the yield and tuber quality of very early potato cultivars (‘Aster’, ‘Drop’) was investigated. The potatoes were harvested 60 days after planting. In the year with cold spring, the agrotextile covering allowed to obtain the tub... | ABSTRACTSalinity stress alleviation through arbuscular mycorrhizal fungi (AMF) application and sodium (Na) localization in strawberry plants were investigated. A greenhouse experiment in a complete... | eng_Latn | 9,571 |
Studies on uterine flushings in the baboon. 3. Immunochemical composition in animals with and without intrauterine contraceptive devices. | Abstract The immunochemical composition of uterine flushings and blood plasma taken from baboons, either with or without intrauterine contraceptive devices (IUD's), in the early secretory phase of the cycle was determined by quantitative electrophoresis. Characteristic, but dissimilar, patterns were obtained from the f... | Computer models for fertilizer recommendation used in Croatia and Hungary are created regarding to soil properties, agroecological conditions and most frequent crops. Development of special profiles of agriculture have been generated need for more adjusted and more specific computer models. Basic models include soil ch... | eng_Latn | 9,572 |
Toxic effects for plants of cleaning products used at home | This research has been carried out as part of the project “Contaminacion cotidiana”, one of the initiatives of Andalucia Mejor con Ciencia supported by Fundacion Descubre. | A study was carried out within nine 11-year-old stands of Pinus radiata in two forests, to assess relationships between productivity and soil factors. Stand variables of stocking, dominant height, diameter, basal area and volume were assessed on a plot basis. For each stand, slope and elevation were also determined. So... | eng_Latn | 9,573 |
Efficacy Evaluation of Sodium Nitroprusside Combined with Dopamine in Treatment of Acute Heart Failure | Objective To evaluate the efficacy of combination use of sodium nitroprusside and dopamine in treatment of acute heart failure(AHF).Methods 66 cases of AHF patients were divided into observation group and control group.Control group:conventional therapy observation groupxonventional treatment plus sodium nitroprusside ... | In this paper,using the design of quadratic common rotation including four factors and five levels,the basic effect model between density,nitrogenous fertilizer,phosphate fertilizer,potash fertilizer and the above-ground biomass of single tree of 5-year-old Eucalyptus Grandis plantation was established in Yi Bin Gao co... | eng_Latn | 9,574 |
Evaluation of Rhizobium meliloti strains indigenous to Sonoran Desert soils by plasmid profile and intrinsic antibiotic resistance | In Arizona, alfalfa (Medicago sativa L.) is not normally inoculated and yet yields are high due to biological nitrogen fixation by indigenous strains of Rhizobium meliloti. The objectives of this study were 1.) to determine the dominant R. meliloti strains indigenous to the Southwest, 2.) to evaluate environmental fact... | All places surveyed are included in the zone of serpentin. Almost all hills are slided and collapsed and they have no big tree. The reservoir is being filled with a large amount of slided materials. Four places were chosen along the road for the present survey where some special features of the land-slide were respecti... | eng_Latn | 9,575 |
Effects of riparian land use changes on soil aggregates and organic carbon | Abstract Soil aggregation processes play a crucial role in re-establishing soil structure and function, and protecting soil organic carbon (SOC) to sustain soil fertility and quality. There is a strong interest in preventing soil erosion in the interface of terrestrial and aquatic ecosystem. The relationship between so... | Water quality information regarding grasslands in the Southern Plains of Oklahoma and Texas in sparse. The objective of this study was to determine the extent to which the area's surface and ground-water quality is influenced by native and introduced grass management practices. Concentrations and amounts of sediment, N... | eng_Latn | 9,576 |
STUDY ON PREPARATION AND ADSORPTION PROPERTIES OF MESOPOROUS CARBONS | The mesoporous carbons via the template method,tetraethoxy silane(TEOS)acted as the source of the template silica and phenol - formaldehyde resins as the carbon precursor,was prepared. FT - IR, SEM, N2 adsorption isotherms phenol formaldehyde and VB12 saturable adsorption were used to study on the pore structure and ad... | Outline Motivation & background work at the JRC EU agricultural emissions in perspective Methodology: CAPRI Model Scenario assumptions Main results Limitations Conclusions Conclusions •Without further action, agricultural GHG emissions in the EU-28 are projected to decrease by 2.3% by 2030 compared to 2005. •The... | yue_Hant | 9,577 |
Ecosystem Functioning: How Much System Is Needed to Explain Function? | Summary Biological communities are assembling, re-assembling, and changing worldwide. How will shifts in community composition alter ecosystem functioning? New research shows that earthworms alter community composition and 52% of measured functions, an important step toward understanding changes in whole ecosystem perf... | This paper models an electricity producing firm's ex ante choice of technology for a generating plant in a way that recognizes that planned output is best described by a load increment composed of an instantaneous rate and a time duration and that the cost of capital equipment is dependent on the size and fuel efficien... | eng_Latn | 9,578 |
Biosynthesis of cocaine and cuscohygrine in Erythroxylon coca | DL-[5-14C]Ornithine is a specific precursor of cocaine and cuscohygrine, and a degradation of the latter alkaloid suggests that this amino-acid is incorporated via a symmetrical intermediate. | The present invention discloses a method Eupatorium carbonization, comprising the steps of: a) grinding: Eupatorium were crushed and straw; 2) stirring and drying: straw pulverized and broken Eupatorium end were mixed and stirred evenly drying; 3) compression molding: the fines mixture was pressed under pressure into r... | eng_Latn | 9,579 |
Carbon-nitrogen metabolism of soil fungi—IV | SummaryWhen mat weight and nitrogen in the mat is considered as a criteria of growth, the efficiency of carbon sources is of the same order irrespective of the nature of the nitrogen source in the medium. Fusaria utilize nitrate nitrogen, ammonia nitrogen in the presence of various carbon sources. That nitrogen, metabo... | Phyllostachys heterocycls cv.pubescens forest is an important forest resource in south China.The result of balanced fertilization in the intensively bred Phyllostachys heterocycls cv.pubescens plantations showed that the balanced fertilization could significantly increase the DBH of the plants,improve the quality of ba... | eng_Latn | 9,580 |
Spatial and temporal changes of soil nutrients of spring maize field in the Loess Plateau under conservation tillage | Three kinds of farming measures were adopted,such as no tillage(NT),conventional tillage + straw returning(TS) and conventional tillage(CT),to study the effects of different tillage treatments on soil nutrient content of spring maize field in the Loess Plateau for three consecutive years.The results show that soil orga... | The value of floodplain lands in agricultural use following channelization and the resulting foregone value of these lands were estimated. The latter estimates were incomplete because of the inability to predict effects on potentially important parameters. Estimated differences provide a threshold for decision-making. ... | eng_Latn | 9,581 |
Growth of strained La1―xSrxCoO3 films and multilayers using layer-by-layer growth | Abstract Pulsed laser deposition was used in combination with real time reflection high energy electron diffraction to prepare layer-by-layer grown La 1 − x Sr x CoO 3 films on single terminated substrates. The films exhibit an epitaxially and completely strained film growth resulting in an atomic flat surface with ter... | ABSTRACTMany surface soils in Japan may experience more frequent and intense drying–rewetting (DRW) events due to future climate changes. Such DRW events negatively and positively affect microbial biomass carbon (MBC) through microbial stress and substrate supply mechanisms, respectively. To assess the MBC immediately ... | eng_Latn | 9,582 |
Spatial Disaggregation of Agricultural Production Data | In this paper we develop a dynamic data-consistent way for estimating agricultural land use choices at a disaggregate level (district-level), using more aggregate data (regional-level). The disaggregation procedure requires two steps. The first step consists in specifying and estimating a dynamic model of land use at t... | The seed development of China and abroad were introduced.And the competition situation was compared.With the SWOT analysis,the suggestion of Liaoning vegetable seed development was put forward.These would provide references for Liaoning seed development. | eng_Latn | 9,583 |
Evaluation of the claim that grass root exudates inhibit nitrification | Washings from living or decaying grass roots did not inhibit nitrification when applied to soil daily. In liquid cultures of nitrite-oxidizers the washings from live roots slightly prolonged the lag period and washings from decaying roots were inhibitory only if collected during initial stages of decay. Macerated roots... | We have studied segregation and embrittling energy of sp ::: elements of the 3rd, 4th and 5th period (Al, Si, P, S, Ga, Ge, ::: As, Se, In, Sn, Sb and Te) at the Sigma5(210) grain boundary ::: (GB) in fcc nickel and the segregation of these impurities at ::: the (210) free surface (FS). Full relaxation of the geometric... | eng_Latn | 9,584 |
Study on Classification and Collection of Rural Solid Waste at the Source in Dianchi Lake Watershed | The article design a set of classification and collection of rural solid waste at the source in Dianchi lake watershed,which can minimize the volume of solid waste,recycle the waste,and make the solid waste harmless to enlarge the application areas and improve the treatment efficiency. | Chili Sundari, Farmers Innovation So Superior Product Lembor Village, Brondong District, Lamongan Regency, East Java Province is a blessing for the people of Lembor village, because of the innovation of this product, the potential of the village can be done and explored more deeply and systematically. The type of resea... | eng_Latn | 9,585 |
Microbial transformation of sulfate in forest soils. | Incubation of forest soils containing sulfate labeled with sulfur-35 showed rapid conversion of the added sulfate to organic sulfur forms by microbial populations. Activity rates were highest in the forest floor, but significant activity was observed throughout the soil profile. The annual potential sulfur incorporatio... | Background ::: Smallholders have begun to take advantage of a growing pool of investment in climate change mitigation. Meanwhile, early movers in this area are working to develop innovative models that will allow projects to be financially sustainable and scalable while benefiting local actors. This study focuses on tw... | eng_Latn | 9,586 |
Connecting growers and sharing knowledge: building a nursery network in California's central coast region | Nearly 20% of the 1.8 million ha (4.5 million ac) around San Francisco Bay in California are protected. Many small-scale, site-specific nurseries produce plants used to restore sites in this area. To improve regional efficacy, the California Native Nurs - ery Network has been established to provide a conversation condu... | This document shows the results and the analysis of the survey that was made, based on the twenty eight manufacture industries of the total of one hundred ninety nine manufacture industries; they industries are located in the rout Cali – Yumbo. The analysis is the result of twenty four questions, that were classify for... | eng_Latn | 9,587 |
Field study on denitrification in soil of south Fujian agricultural catchment | Denitrification from soils is the main pathway of gaseous loss for nitrogen in the catchments.We measured the denitrification rate from the top-soil in Wuchuan catchment by using the acetylene inhibition technique.The result of this experiment indicated that denitrification of the soil had the temporal and spatial vari... | This article deals with the phenomenon of crime as experienced by farmers in various farms in the area of "Transvaal Sugar Limited". The empirical-phenomenological method was utilised and the following five steps were employed: reduced transcriptions, summarising the main points of the case, illustrated condensation of... | eng_Latn | 9,588 |
Effect of cultivar and environment on the feeding value of Western Canadian wheat and barley samples with and without enzyme supplementation | The feeding value ofnine wheat cultivars grown in replicate in three locations in each of two crop years, and 14 barley cultivars grown in seven locations over three crop years was tested with or without an appropriate commercial enzyme using a broiler chick bioassay. Four pens of six male broilers were fed mash diets ... | Appraisaling the land-use change degree of urban land objectively, analyzing the reasons, and proposing the countermeasures have important meanings to promote land sustainable development. The article analyzed the dynamic change of land-use ecological footprint in Harbin City from 1996 to 2006. Through the measurement ... | eng_Latn | 9,589 |
Farm practices survey and modelling to estimate monthly NH3emissions from swine production in 12 Ecoregions of Canada | The swine industry in Canada has undergone rapid growth in some areas, but has also been restricted by a variety of environmental issues. Ammonia (NH3) emissions are seldom mentioned among these issues, but emissions do occur and atmospheric NH3 causes a number of impacts including contributing to odour, deposition int... | In the present investigation it was necessary to analyze the internal control of the company Perufarma S.A. dedicated to wholesale of various household goods, consolidated as a major supplier of all major supermarket chains and wholesalers throughout Peru. ::: To do this, information was sought from various sources and... | eng_Latn | 9,590 |
What is the biggest problem with landfil leachate? | Why is leachate such a problem? | Why is leachate such a problem? | eng_Latn | 9,591 |
what is an example of a negative stain? | Negative Staining- Principle, Reagents, Procedure and Result 3.95/5 (38) Negative Staining- Principle, Reagents, Procedure and Result. The main purpose of Negative staining is to study the morphological shape, size and arrangement of the bacteria cells that is difficult to stain. eg: Spirilla. It can also be used to st... | Negative and positive externalities. In the case of pollutionâthe traditional example of a negative externalityâa polluter makes decisions based only on the direct cost of and profit opportunity from production and does not consider the indirect costs to those harmed by the pollution. | eng_Latn | 9,592 |
alfalfa nutrient deficiency symptoms | Cobalt is not. essential for alfalfa growth, but is required by rhizobia bacteria that provides alfalfa with. nitrogen from the air, and therefore is beneficial to the alfalfa plant. Alfalfa often exhibits symptoms that may mimic nutrient deficiencies such as purpling or. yellowing of the leaves. | Factors Affecting Sulfur Deficiency. Sulfur deficiency of alfalfa and other crops may be becoming more prevalent because less S is. deposited from the atmosphere to the soil due to reductions in power plant S emissions (Fig. 1). Higher yields result in greater crop S removal from the field - about 5-7 lb for each ton o... | eng_Latn | 9,593 |
Turbine for an exhaust gas turbocharger, the exhaust gas turbocharger, the motor vehicle and method for operating an exhaust gas turbocharger | The present invention relates to a turbine 1 for an exhaust gas turbocharger 2, in particular for a motor vehicle, with a turbine flap 3, which the turbine drives a 1 flows through exhaust gas amount, with a waste gate valve 4, which exhaust gas passed passes to the turbine 1, and with a wastegate -key 5 which the wast... | The unpleasant smell of dung fly everywhere, dirt strewn everywhere be a factor for the emergence of social conflict surrounding of cow breeding. Biogas digester in the form of a closed tube can be used for cow dung that is no longer scattered and the scent is not pleasant been isolated. Not only that bio-gas produced ... | eng_Latn | 9,594 |
New rules for Gram-negative antibiotics | In the fight against pathogenic bacteria, Gram-negative bacteria such as Escherichia coli and Pseudomonas aeruginosa are particularly challenging foes. These microbes don’t respond to many common antibiotics, and no new drug active against Gram-negative bacteria has been approved in nearly a half century. Part of the d... | Abstract Unprotected streams within the agricultural Midwest region of the United States are subject to sedimentation, nutrification, and agricultural chemicals. Grass riparian filter strips (GRFSs) have been implemented as a best management practice to minimize sedimentation and associated materials that are harmful t... | eng_Latn | 9,595 |
The economic efficiency of voluntary soil conservation programs | Active dry yeast is prepared by a process involving feeding crumbly yeast with air into a mill in which the yeast is disintegrated without substantial breakdown of yeast cells, carrying the yeast out of the mill in a stream of air, separating the yeast from the airstream and drying the yeast to a dry content of at lest... | Value maximization is the top objective of corporation. SVA?EVA and CFROI are all effective value measures. Having introduced these measures′ theoretical foundation and calculating method,this paper compares their adaptability to strategy from seven perspectives. | eng_Latn | 9,596 |
Das Leipziger Festkörper-DAS-LIDAR-System: Auswerteverfahren, Aufbau und Messergebnisse | During the past three years a mobile, completely automated, remotely controlled solid state laser DIAL LIDAR system with two receiver channels has been built up in Leipzig, which is able to calculate the measured data immediately during the measurement and to put them into the world wide web. A new developed numerical ... | Abstract Unprotected streams within the agricultural Midwest region of the United States are subject to sedimentation, nutrification, and agricultural chemicals. Grass riparian filter strips (GRFSs) have been implemented as a best management practice to minimize sedimentation and associated materials that are harmful t... | deu_Latn | 9,597 |
In cricket Allan Lamb played for which county? | Allan Lamb | England Cricket | Cricket Players and Officials | ESPN Cricinfo 1972/73 - 1995 Profile Some England cricketers are born; there was no destiny in Allan Lamb's career. Signed from Western Province as an unknown by Northamptonshire as their overseas player in 1978, he was chugging along nicely when Ken Turner... | Sir Albert Howard Memorial Issue Sir Albert Howard Memorial Issue Organic Gardening Magazine (Vol. 13, No. 8), September, 1948 Sir Albert Howard, Founder of the Organic Farming Movement, died in England in October 1947 at the age of 74. Most of this issue of J.I. Rodale's Organic Gardening Magazine was devoted to his m... | eng_Latn | 9,598 |
Which soil is good for bean plants? | How can you find the best soil mixture for your beans? | What soil is needed to grow coffee beans? | eng_Latn | 9,599 |
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