publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
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2021-03-01 | The anti-corrosion properties of sol–gel-based hybrid silanol coatings incorporated with span tea leaves extract employed on low carbon steel in saline solution was explored by electrochemical and surface analyses. Hybrid sol–gel matrices were prepared by copolymerizing tetraethyl orthosilicate (TEOS) and 3-aminopropyl... | Enhanced corrosion inhibition of low carbon steel in aqueous sodium chloride employing sol–gel-based hybrid silanol coatings | 10.1007/s10971-021-05474-5 |
2021-03-01 | Some spiders aerially disperse relying on their fine fibres. This behaviour has been known as ‘ballooning’. Observations on the ballooning behaviour of spiders have a long history and have more recently received special attention, yet its underlying physics is still poorly understood. It was traditionally believed that... | Aerodynamics and the role of the earth’s electric field in the spiders’ ballooning flight | 10.1007/s00359-021-01474-6 |
2021-03-01 | Herein, we developed a novel effervescence-assisted dual microextraction method, abbreviated as EM-LPSH, using lighter-than-water phosphonium-based ionic liquids (LPILs) and switchable hydrophilic/hydrophobic fatty acids (SHFAs). The EM-LPSH method was utilized for quick enrichment/extraction of polycyclic aromatic hyd... | Effervescence-assisted dual microextraction of PAHs in edible oils using lighter-than-water phosphonium-based ionic liquids and switchable hydrophilic/hydrophobic fatty acids | 10.1007/s00216-021-03167-0 |
2021-03-01 | Centrifugal compressors for the fuel cell vehicles often operate near the surge line compared with the turbocharger compressors. Low solidity and half vaned diffusers are recognized as good ways to improve the stability of the centrifugal compressor. The presented work investigated four diffuser configurations (i.e., t... | Numerical Investigation of the Centrifugal Compressor Stability Improvement by Half Vaned Low Solidity Diffusers | 10.1007/s11630-021-1318-6 |
2021-03-01 | Background Metaplastic carcinoma is an aggressive, triple-negative breast cancer (TNBC) with differentiation towards squamous, spindle, or mesenchymal cell types. The molecular underpinnings of the histological subtypes are unclear. Our lab discovered a cytoplasmic function of EZH2, a transcriptional repressor, whereby... | Subcellular localization of EZH2 phosphorylated at T367 stratifies metaplastic breast carcinoma subtypes | 10.1007/s12282-020-01189-7 |
2021-03-01 | This article presents the design and prototyping of components for a modular multiple-input-multiple-output (MIMO) millimeter-wave radar for space applications. A single radar panel consists of 8 transmitters (TX) and 8 receivers (RX), which can be placed several times on the satellite to realize application-specific r... | A Modular MIMO Millimeter-Wave Imaging Radar System for Space Applications and Its Components | 10.1007/s10762-020-00736-9 |
2021-03-01 | Prosaposin (PSAP) has two forms: a precursor and a secreted form. The secreted form has neurotrophic, myelinotrophic, and myotrophic properties. The precursor form is a precursor protein of saposins A–D. Although the distribution of PSAP in male reproductive organs is well known, its distribution in female reproductive... | Prosaposin in the rat oviductal epithelial cells | 10.1007/s00441-020-03339-x |
2021-03-01 | Objective To determine if early discontinuation of antimicrobials in pediatric patients with low risk febrile neutropenia is as effective as continuing therapy before recovery of counts, in an outpatient setting. Methods In an open label, non-inferiority, randomized controlled phase 3 trial at a tertiary cancer center,... | Early Discontinuation versus Continuation of Antimicrobial Therapy in Low Risk Pediatric Cancer Patients with Febrile Neutropenia, Before Recovery of Counts: A Randomized Controlled Trial (DALFEN Study) | 10.1007/s12098-020-03377-x |
2021-03-01 | Background Low carbohydrate diet (LCD) can improve inflammation and obesity and also circadian rhythm disorders can lead to increased inflammation in obese individuals. The purpose of this study is to evaluate the association between adherence of LCD and circadian rhythm mediated by inflammatory markers including trans... | Circulating inflammatory markers may mediate the relationship between low carbohydrate diet and circadian rhythm in overweight and obese women | 10.1186/s12905-021-01240-5 |
2021-03-01 | Onion ( Allium cepa L.) is one of the most important bulbous vegetable used in global kitchen. Although it has various important traits but among them the high total soluble solid content (HTSS) of white onion is highly preferred by the industries for processing purpose. Looking into the broader use of the white onion;... | Identification and characterization of white onion (Allium cepa L.) genotypes for high total soluble solid content through molecular markers | 10.1007/s10722-020-01037-9 |
2021-03-01 | Background The chemical quality of drinking water is widely unknown in low-income countries. Objective We conducted an exploratory study in Manhiça district (Mozambique) to evaluate drinking water quality using chemical analyses and cell-based assays. Methods We measured nitrate, fluoride, metals, pesticides, disinfect... | Chemical and in vitro bioanalytical assessment of drinking water quality in Manhiça, Mozambique | 10.1038/s41370-020-00282-5 |
2021-03-01 | In this paper, we introduce an estimation of the random Klinkenberg slip coefficient in the apparent permeability model using a chaos decomposition technique. The apparent permeability expression (Klinkenberg model) is used to describe natural gas transport in low-permeability media. In this process, the Klinkenberg fa... | Stochastic Estimation of the Slip Factor in Apparent Permeability Model of Gas Transport in Porous Media | 10.1007/s11242-021-01575-5 |
2021-03-01 | The toxic effects of heavy metals pose a significant threat to the productivity and stability of forest ecosystems. Changes in the agrochemical properties of polluted forest soils due to global climate changes can increase the bioavailability of previously immobilized heavy metals. To test this hypothesis, we studied t... | Phytotoxicity of short-term exposure to excess zinc or copper in Scots pine seedlings in relation to growth, water status, nutrient balance, and antioxidative activity | 10.1007/s11356-020-11723-x |
2021-03-01 | Besides Quercus , Acer L. genus is the largest tree genus in the Northern Hemisphere and consists of about 124–156 species. High morphological and molecular variability has led to infra-specific complexity within most species of this genus. In Iran, the Acer cappadocicum subsp. cappadocicum Gled. is distributed in east... | Infra-specific variation of Acer cappadocicum (Sapindaceae): morphological and molecular approaches | 10.1007/s40415-020-00692-7 |
2021-03-01 | The design of most cities prioritizes the use of motorized vehicles, having a negative effect on urban health. A major concern in the European Union (EU) is air pollution, especially nitrogen dioxide (NO 2 ), which causes many inhabitants health problems and decreases the quality of life. A non-expensive way to reduce ... | Car restriction policies for better urban health: a low emission zone in Madrid, Spain | 10.1007/s11869-020-00938-z |
2021-03-01 | Purpose Pediatric low-grade gliomas (pLGGs), the most frequent pediatric brain tumors, include different entities harboring distinct histological and molecular features. A major limitation in the development of treatments for these tumors is the absence of reliable in vitro models that would allow a better understandin... | Pediatric low-grade gliomas: molecular characterization of patient-derived cellular models | 10.1007/s00381-020-04559-w |
2021-03-01 | Objective Middle cluneal nerve entrapment (MCN-E) around the sacroiliac joint can elicit low back pain (LBP). Pain control can be obtained with anesthetic nerve blocks; however, when their effectiveness is transient, surgical release may be necessary. We investigated the efficacy of radiofrequency thermocoagulation (RF... | High-frequency thermal coagulation to treat middle cluneal nerve entrapment neuropathy | 10.1007/s00701-020-04404-8 |
2021-03-01 | Abstract— Electrodynamic characteristics of a low-pressure (electron collision frequency much lower than the field frequency) capacitive HF discharge maintained by an electromagnetic field with a frequency between 13 and 900 MHz are studied analytically and numerically. It is demonstrated that the field of both the fun... | Specificities of Electromagnetic Field Excitation in a Capacitive HF Discharge. III. Symmetric Discharge Partially Filling the Discharge Chamber | 10.1134/S1063780X2102001X |
2021-03-01 | Aim The risk of excessive bleeding prompts physicians to discontinue aspirin in patients on low-dose, long-term therapy which in turn puts them at the risk from adverse cardiovascular and thrombotic events. Effect of low-dose aspirin therapy on platelet function was assessed using platelet aggregation method. The aim w... | Clinical Post-operative Bleeding During Minor Oral Surgical Procedure and In Vitro Platelet Aggregation in Patients on Aspirin Therapy: Are they Coherent? | 10.1007/s12663-020-01438-4 |
2021-03-01 | Abstract — The water exchange between the Black Sea and the Azov Sea is investigated on the base of the marine observations aboard the R/V Deneb in 2018 and 2019. The surveys were conducted under different weather conditions, which led to large variability of the results. The northern wind contributes to the formation ... | Currents of the Azov Sea during the Don River Low-Water Period | 10.1134/S0001437021020132 |
2021-03-01 | This paper presents the construction of prediction intervals (PIs) associated with the Emotional Artificial Neural Network (EANN) via the Lower Upper Bound Estimation method (LUBE) and the classic Bootstrap method for the Suspended Sediment Load (SSL) modeling. As point prediction conveys no information about modeling ... | Assessing the effect of emotional unit of emotional ANN (EANN) in estimation of the prediction intervals of suspended sediment load modeling | 10.1007/s12145-020-00567-1 |
2021-02-24 | Background Pain hypersensitivity can be assessed using Quantitative Sensory Testing (QST) and is associated with persistent low back pain. Spinal manipulation appears to modify pain hypersensitivity, and this could function as one mechanism leading to clinical improvements. In the current study, we applied a comprehens... | Spinal manipulation and modulation of pain sensitivity in persistent low back pain: a secondary cluster analysis of a randomized trial | 10.1186/s12998-021-00367-4 |
2021-02-24 | This paper proposes a comparison of the numerical aspect and efficiency of several low rank approximation techniques for multidimensional data, namely CPD, HOSVD, TT-SVD, RPOD, QTT-SVD and HT. This approach is different from the numerous papers that compare the theoretical aspects of these methods or propose efficient ... | Numerical Study of Low Rank Approximation Methods for Mechanics Data and Its Analysis | 10.1007/s10915-021-01421-2 |
2021-02-22 | Storing bio-specimens in adequate temperatures is an important task in hospitals. Usually an assigned employee records manually the temperatures of the hospital cold storages such as refrigerators and freezers that keep them at regular intervals. In this research, a low power wireless Bluetooth Low Energy network is ap... | Development of Temperature Monitoring System of Hospital Cold Storages Based on Wireless Network and its Database Management | 10.1007/s10916-021-01711-0 |
2021-02-18 | In this paper, an extensive investigation of low-frequency (1/ f ) noise and total ionizing dose–response of junctionless accumulation mode double-gate (JAM DG) MOSFET is presented. Current–voltage ( I d – V g ) characteristics and low-frequency noise of JAM DG MOSFET are simulated at different ionized doses and compar... | Total ionizing dose effects in junctionless accumulation mode MOSFET | 10.1007/s00339-021-04313-2 |
2021-02-18 | Background The effect of low-level laser therapy (LLLT) on pain mitigation following the third molar surgery is still controversial. The absence of a standard method for using laser among the studies is related to the types of sample selection, sample size, control, and LLLT parameters, which make pain mitigation follo... | Low‐level laser therapy using laser diode 940 nm in the mandibular impacted third molar surgery: double-blind randomized clinical trial | 10.1186/s12903-021-01434-1 |
2021-02-16 | We investigate the action of discretized Virasoro generators, built out of generators of the lattice Temperley-Lieb algebra (“Koo-Saleur generators” [1]), in the critical XXZ quantum spin chain. We explore the structure of the continuum-limit Virasoro modules at generic central charge for the XXZ vertex model, parallel... | The action of the Virasoro algebra in quantum spin chains. Part I. The non-rational case | 10.1007/JHEP02(2021)130 |
2021-02-15 | The combination of low clinker high-performance concrete (LCHPC) and ultra-high modulus (UHM) carbon fibre reinforced polymer (CFRP) tendons was recently proposed for prestressed structural elements. The 70% reduction in cement content resulting in limited creep and shrinkage of the LCHPC in comparison to a conventiona... | Prestressing low clinker structural concrete elements by ultra-high modulus carbon fibre reinforced polymer tendons | 10.1617/s11527-021-01634-9 |
2021-02-12 | Magnetic Resonance Imaging (MRI), a non-invasive method for the diagnosis of diverse health conditions has experienced growing popularity over other imaging modalities like ultrasound and Computer Tomography. Initially, proof-of-concept and earlier MRI systems were based on resistive and permanent magnet technology. Ho... | Approaches in cooling of resistive coil-based low-field Magnetic Resonance Imaging (MRI) systems for application in low resource settings | 10.1186/s42490-021-00048-6 |
2021-02-12 | Background Low dose methotrexate toxicity rarely occurs, but may present with severe complications, such as pancytopenia, hepatotoxicity, mucositis, and pneumonitis. Known risk factors for methotrexate toxicity include dosing errors, metabolic syndrome, hypoalbuminemia, renal dysfunction, lack of folate supplementation... | Potential contributors to low dose methotrexate toxicity in a patient with rheumatoid arthritis and pernicious anemia: case report | 10.1186/s41927-020-00175-y |
2021-02-12 | Background Malaria remains a serious health threat in the Amazonas Region of Peru and approximately 95% of the cases, mainly Plasmodium vivax , are found in native communities of The Rio Santiago District, Condorcanqui Province. In 2019, more than one thousand malaria cases were reported, with an unusual number of Plas... | Plasmodium falciparum outbreak in native communities of Condorcanqui, Amazonas, Perú | 10.1186/s12936-021-03608-2 |
2021-02-05 | Background Birth asphyxia is one of the leading causes of intrapartum stillbirth and neonatal mortality worldwide. We sought to explore the experiences of health care workers in managing foetal distress and birth asphyxia to gain an understanding of the challenges in a low-income setting. Methods We conducted in-depth ... | Health care workers’ experiences of managing foetal distress and birth asphyxia at health facilities in Northern Uganda | 10.1186/s12978-021-01083-1 |
2021-02-04 | The low pyrolysis-crystallization temperature of 200 °C was firstly reported to prepare crystalline low-selenium Sb 2 S x Se y ( x : y = 3.0:0.2) thin films using the mixture solution of Sb 2 O 3 , Se, CS 2 , and n -butylamine in DMF as a precursor solution. The corresponding thin film solar cells with the architecture... | The low-temperature preparation for low-selenium Sb2SxSey thin film solar cells with efficiency of > 5% | 10.1007/s11051-021-05155-y |
2021-02-03 | We study some general properties of coupled quantum systems. We consider simple interactions between two copies of identical Hamiltonians such as the SYK model, Pauli spin chains with random magnetic field and harmonic oscillators. Such couplings make the ground states close to the thermofield double states of the unco... | Entanglement and confinement in coupled quantum systems | 10.1007/JHEP02(2021)034 |
2021-02-03 | In the present paper, we study the combined incompressible and fast rotation limits for the full Navier–Stokes–Fourier system with Coriolis, centrifugal and gravitational forces, in the regime of small Mach, Froude and Rossby numbers and for general ill-prepared initial data. We consider both the isotropic scaling (whe... | A Multiscale Problem for Viscous Heat-Conducting Fluids in Fast Rotation | 10.1007/s00332-021-09677-6 |
2021-02-01 | This article studies the cold shock resistance and safety performance of NaNO 3 /SiO 2 /C composite inorganic phase-change thermal storage materials at extremely low temperatures. A low-temperature cold shock test system is built, and the composite inorganic phase-change thermal storage materials of different raw mater... | Research on Performance and Safety of Composite Inorganic Phase-Change Materials (NaNO3/SiO2/C) under Low-temperature Cold Shock | 10.1007/s11665-020-05343-2 |
2021-02-01 | The article improves the process of dielectric barrier discharge (DBD) activated anode bonding. The treated surface was characterized by the hydrophilic surface test. The results showed that the hydrophilic angle was significantly reduced under nano-gap conditions and the optimal discharge voltage was 2 kV Then, the an... | Ultra-low temperature anodic bonding of silicon and glass based on nano-gap dielectric barrier discharge | 10.1007/s11771-021-4607-z |
2021-02-01 | Waterflooding is the most widely applied improved oil recovery technique. Recently, there has been growing interest in the chemistry and ionic composition of the injected water. Low-salinity waterflooding (LSWF) is a relatively recent enhanced oil recovery technique that has the ability to alter the crude oil/brine/roc... | Application of Low-Salinity Waterflooding in Carbonate Cores: A Geochemical Modeling Study | 10.1007/s11053-020-09712-5 |
2021-02-01 | Yttrium silicate is one of the promising environmental barrier coating materials used to protect ceramic matrix composites (CMCs) under specific operating conditions. In this paper, yttrium monosilicate (Y 2 SiO 5 , YMS) nanoparticles were synthesized using a molten salt method with a low synthesis temperature. To find... | Effects of preparing conditions on the synthesis of Y2SiO5 nanoparticles by low-temperature molten salt method | 10.1007/s41779-020-00507-8 |
2021-02-01 | The current study investigates the effect of microwave processing on low-grade banded iron ore using charcoal, coking coal, and non-coking coal. Charcoal showed better microwave heating response at low temperatures, and the coals exhibit better heating response at higher temperatures. Low carbon dosage ~ 12% is suffici... | Microwave Processing of Low-Grade Banded Iron Ore with Different Reductants | 10.1007/s42461-020-00304-8 |
2021-02-01 | We report the cause of degradation of low-temperature amorphous indium-gallium-zinc-oxide (a-IGZO) coplanar thin-film transistors (TFTs). As the deposition temperature of the buffer layer was changed from 400 to 200 °C, the field-effect mobility decreased considerably from 15 to 3 cm 2 V −1 s −1 , the subthreshold sw... | Finding the cause of degradation of low-temperature oxide thin-film transistors | 10.1007/s40042-021-00069-3 |
2021-02-01 | Poly( N , N -bis(2-methoxyethyl)acrylamide) (PbMOEAm) featuring two classical chemical motifs from non-ionic water-soluble polymers, namely, the amide and ethyleneglycolether moieties, was synthesized by reversible addition fragmentation transfer (RAFT) polymerization. This tertiary polyacrylamide is thermoresponsive e... | Poly(N,N-bis(2-methoxyethyl)acrylamide), a thermoresponsive non-ionic polymer combining the amide and the ethyleneglycolether motifs | 10.1007/s00396-020-04701-9 |
2021-02-01 | A new method for separating and recovering tin from a low-grade tin middling with high Si content and low Fe content by roasting with anthracite coal was researched by studying the reaction mechanism and performing an industrial test, in which the Sn was sulfurized into SnS(g) and then collected using a dust collector.... | Tin recovery from a low-grade tin middling with high Si content and low Fe content by reduction—sulfurization roasting with anthracite coal | 10.1007/s12613-020-2038-8 |
2021-02-01 | The present paper focuses on the production of a below zero emission reducing gas for use in raw iron production. The biomass-based concept of sorption-enhanced reforming combined with oxyfuel combustion constitutes an additional opportunity for selective separation of CO 2 . First experimental results from the test pl... | Evaluation of biomass-based production of below zero emission reducing gas for the iron and steel industry | 10.1007/s13399-020-00939-z |
2021-02-01 | To quantitatively assess the risks associated with Carbon Capture and Storage (CCS) technology, a better understanding of the dispersion characteristics of CO 2 released from a high-pressure pipeline is necessary. The dispersion process is complicated as CO 2 is denser than air, and the Joule-Thomson effect causes shar... | Dispersion of carbon dioxide released from buried high-pressure pipeline over complex terrain | 10.1007/s11356-020-11012-7 |
2021-02-01 | MicroRNAs (miRNAs) play important roles in post-transcriptional regulation as well as in various biological and metabolic processes. Lilium pumilum originated from northern China with a high ornamental value, and is important for Lilium resistance breeding. The dormancy of the bulbs has a serious effect on flowering qu... | Identification and Expression Analysis of microRNAs in Response to Dormancy Release During Cold Storage of Lilium pumilum Bulbs | 10.1007/s00344-020-10108-1 |
2021-02-01 | In this paper, a wearable medical sensor system is designed for long-term healthcare applications. This system is used for monitoring temperature, heartbeat, blood oxygen saturation (SpO 2 ), and the acceleration of a human body in real-time. This system consists of a temperature sensor, a pulse oximeter sensor, an acc... | A Self-powered Wearable Wireless Sensor System Powered by a Hybrid Energy Harvester for Healthcare Applications | 10.1007/s11277-020-07840-y |
2021-02-01 | Phascolosoma esculenta is an intertidal organism that has recently attracted attention because of its ability to survive at relatively low temperatures. However, the gene regulation in P. esculenta in relation to its response to low temperatures is unclear. To explore the low temperature adaptability of P. esculenta , ... | Effects of Low Temperature Stress on the Morphology and hsp70 and hsp90 Gene Expression of Phascolosoma esculenta | 10.1007/s11802-021-4475-z |
2021-02-01 | Freezing stress is a serious environmental factor that obstructs plant development. The root endophytic fungus Piriformospora indica has proved to be effective to confer abiotic stress tolerance to host plants. To investigate how P. indica improves freezing tolerance, we compared the expression profiles of P. indica -c... | Transcriptome analysis of Arabidopsis reveals freezing-tolerance related genes induced by root endophytic fungus Piriformospora indica | 10.1007/s12298-020-00922-y |
2021-02-01 | Manganese was leached from a low-grade manganese ore (LGMO) using banana peel as the reductant in a dilute sulfuric acid medium. The effects of banana peel amount, H 2 SO 4 concentration, reaction temperature, and time on Mn leaching from the complex LGMO were studied. A leaching efficiency of ∼98% was achieved at a le... | Hydrometallurgical leaching and kinetic modeling of low-grade manganese ore with banana peel in sulfuric acid | 10.1007/s12613-020-2069-1 |
2021-02-01 | A series of novel N-doped carbon-coated Li 3 V 2 (PO 4 ) 3 (LVPC/N) composites were synthesized by rheological phase method with melamine as nitrogen source. The results showed that N-doping did not affect the main structure of Li 3 V 2 (PO 4 ) 3 /C (LVPC) but only changed the structure and properties of the coating la... | Nitrogen-doped carbon-coated Li3V2(PO4)3 as cathode materials for high-performance lithium storage | 10.1007/s11581-020-03878-x |
2021-02-01 | IoT devices become more and more popular which implies a growing interest in easily maintainable and battery-independent power sources, as wires and batteries are unpractical in application scenarios where billions of devices get deployed. To keep the costs low and to achieve the smallest possible form factor, SoC impl... | Microwatt power management: challenges of on-chip energy harvesting | 10.1007/s00502-020-00859-w |
2021-02-01 | The propellant supply system of a liquid rocket engine using an electric pump has high reliability because of the relatively small number of components. The system also has the merit of a quick response and ease of control owing to its simple configuration. Recently, the rocket lab developed the Rutherford engine, whic... | Performance Analysis and Mass Estimation of a Small-Sized Liquid Rocket Engine with Electric-Pump Cycle | 10.1007/s42405-020-00325-z |
2021-02-01 | Many oak stands ( Quercus spp.) have been managed as coppices for firewood production for centuries in the Mediterranean area. After the abandonment of firewood production during the 1980s, current management practices attempt to convert coppices into coppices-with-standards through thinning and promoting forest regene... | Influence of climate and thinning on Quercus pyrenaica Willd. coppices growth dynamics | 10.1007/s10342-020-01322-3 |
2021-02-01 | It is unclear whether the frequently observed increase in non-structural carbohydrates (NSC) in plants exposed to low temperatures or drought reflects a higher sensitivity of growth than photosynthesis in such conditions (i.e. sink limitation), or a prioritization of carbon (C) allocation to storage. Alpine areas in Me... | Carbon allocation to growth and storage depends on elevation provenance in an herbaceous alpine plant of Mediterranean climate | 10.1007/s00442-020-04839-x |
2021-02-01 | Nylon cord rubber has the advantages of small residual deformation and is easy to lift and lower the tubing string in low-permeability oil and gas reservoirs. However, it is associated with low-pressure resistance and poor sealing performance. To enhance the performance of nylon cord rubber, a three-dimensional numeric... | Multi-objective optimization and experiment of nylon cord rubber in expandable packer | 10.1007/s12182-020-00539-6 |
2021-02-01 | A novel hybrid silicon Single Electron Transistor Metal Oxide Semiconductor (SETMOS) logic is evaluated for its functionality and usability. Emphasis is given on obtaining functionality at ambient temperature with low power consumption and significant drive. Performance is evaluated with respect to 22 nm Complementary ... | Novel Hybrid Silicon SETMOS Design for Power Efficient Room Temperature Operation | 10.1007/s12633-020-00461-x |
2021-02-01 | The cation-independent bioflocculant (59LF) extracted from Klebsiella sp. 59L was characterized. 59LF consisted of protein (4.8%) and total sugar (85.2%) with high molecular weight (93.82% of 2120 kDa), and total sugar was composed of 76.45% of neutral sugar, 3.65% of uronic acid, and 1.43% of amino sugar. Results indi... | Optimized production and characterization of cation-independent bioflocculant produced by Klebsiella sp. 59L | 10.1007/s11356-020-11162-8 |
2021-02-01 | Abstract Chloroaluminate ionic liquids are the most promising electrolytes for the low-temperature electrolysis of aluminum and in aluminum-ion batteries. An important problem in this area is the determination of the ionic composition and the ion concentrations in an ionic liquid. The low-temperature AlCl 3 –1-butyl-3-... | Calculation of the Molar Concentrations of Ions in the Molten System AlCl3–1-Butyl-3-Methylimidazolium Chloride | 10.1134/S0036029521020063 |
2021-02-01 | The feasibility of converting full nitritation to partial nitritation/anammox (PN/A) at ambient temperature (20 °C) was investigated in a continuous granular reactor. The process was conducted without anammox bacteria inoculation for the treatment of 70 mg L −1 of low-strength ammonium nitrogen wastewater. Following th... | Conversion of full nitritation to partial nitritation/anammox in a continuous granular reactor for low-strength ammonium wastewater treatment at 20 °C | 10.1007/s10532-020-09923-w |
2021-02-01 | Electrochemical machining (ECM) is becoming increasingly important for the efficient machining of parts with a large machining area. This is an addition challenge for ECM because of the very high machining current. To overcome this difficulty, a direct and effective strategy is to adopt the machining mode that uses a l... | Surface morphology and electrochemical behaviour of Ti-48Al-2Cr-2Nb alloy in low-concentration salt solution | 10.1007/s11431-019-1558-8 |
2021-02-01 | Injection of low-salinity water into carbonate reservoirs has gained attention as a viable and efficient enhanced oil recovery approach through wettability alteration as prevailing mechanism. However, modeling and implementation of wettability alteration during simulation of low-salinity water injection are challenging... | Gradual or Instantaneous Wettability Alteration During Simulation of Low-Salinity Water Flooding in Carbonate Reservoirs | 10.1007/s11053-020-09726-z |
2021-02-01 | We investigated the effect of nanosized NbC precipitates on hydrogen-induced cracking (HIC) of high-strength low-alloy steel by conducting slow-strain-rate tensile tests (SSRT) and performing continuous hydrogen charging and fracture analysis. The results reveal that the HIC resistance of Nb-bearing steel is obviously ... | Effect of nanosized NbC precipitates on hydrogen-induced cracking of high-strength low-alloy steel | 10.1007/s12613-020-2167-0 |
2021-02-01 | Because of the toxicity of Gd(III) complexes and the poor T 1 magnetic resonance imaging (MRI) contrast of superparamagnetic iron oxide, the development of new stable, non-toxic, and efficient contrast agents is desirable. Herein, tannic acid (TA), a large natural polyphenol, and bovine serum albumin (BSA) were used to... | Ultrasensitive iron-based magnetic resonance contrast agent constructed with natural polyphenol tannic acid for tumor theranostics | 10.1007/s40843-020-1434-1 |
2021-02-01 | A technique to detect the bolt looseness in steel frame using the transfer impedance technique, which is a dual piezoelectric material technique, for bolted joint structural health monitoring is experimentally studied. An expensive impedance analyzer should be used to employ the single piezoelectric material technique ... | An Experimental Study on Bolt Looseness Monitoring Using Low-Cost Transfer Impedance Technique | 10.1007/s13296-020-00442-1 |
2021-02-01 | The concentration of different maceral groups and minerals in coal influence the quality as each of them behaves differently during heat treatment. The purpose of this study is to know how these are behaving at different temperature conditions. Therefore, various macerals and minerals were concentrated by using heavy l... | Effect of Heat on Organic and Inorganic Components in Some Non-coking Lower Gondwana Coals | 10.1007/s12666-020-02168-4 |
2021-02-01 | The Wuchuan–Sihui–Shaoguan (WSS) exhalative sedimentary pyrite belt in the southwestern part of the Qinzhou–Hangzhou (Qin–Hang) belt is the most important sulfur industry base in China. However, a wide range of metallogenetic ages spanning from Ediacaran to Devonian has been reported in the literature. This age range d... | Early Silurian Wuchuan–Sihui–Shaoguan exhalative sedimentary pyrite belt, South China: constraints from zircon dating for K-bentonite of the giant Dajiangping deposit | 10.1007/s11631-020-00439-x |
2021-02-01 | The temporal and spatial relationships between polyphase folding and faulting, regional metamorphism, and granitoids intrusions are discussed for the low-grade basement rocks of the El Jagüelito Formation from the eastern North Patagonian Massif, Argentina, at the inferred western Gondwana margin. As a result of the te... | Early Paleozoic structural and metamorphic evolution of the Transpatagonian Orogen related to Gondwana assembly | 10.1007/s00531-020-01939-0 |
2021-02-01 | This study aimed to compare the growth performance, food consumption, and acoustic feeding behavior of two size classes of Litopenaeus vannamei fed on extruded and pelleted diets. Two similar diets (35% crude protein) prepared by extrusion or pelletizing methods were offered to two shrimp size classes: small (3.83 ± 0.... | Growth performance and acoustic feeding behavior of two size classes of Litopenaeus vannamei fed pelleted and extruded diets | 10.1007/s10499-020-00636-8 |
2021-02-01 | Combustion of coal create many harmful gases which effect on human health as well as on environment. The sulfur in coal limits its own use, and bio-desulfurization (BDS) shows enormous development potential and the prospects for the application of coal desulfurization. Present study highlights the bioprocess strategies... | Biological assisted organic sulfur removal from low rank indigenous coal using airlift bioreactor | 10.1007/s00449-020-02453-y |
2021-02-01 | Different oil displacement experiments conducted on sandstone and carbonate samples show that low salinity water (LSW) injection can reduce the residual oil saturation (ROS). Recently, surfactant flooding (SF) in combination with low salinity water (known as low salinity surfactant (LSS) flooding) is proposed as a pote... | Capillary desaturation curve: does low salinity surfactant flooding significantly reduce the residual oil saturation? | 10.1007/s13202-020-01074-1 |
2021-02-01 | Polyploid breeding is widely used in various marine species. Low salinity treatment is an effective method of inducing triploid of bivalve mollusks. In this study, RNA-seq was performed to determine genes and pathways involved in hyposaline adaption and cell division of Pacific oyster ( Crassostrea gigas ) zygotes, try... | Transcriptomic Analysis of Pacific Oyster (Crassostrea gigas) Zygotes Under Hypotonic Triploid Induction | 10.1007/s11802-021-4450-8 |
2021-02-01 | The purpose of this study is to investigate the presence of nervous fibers and expression of TRP channels in samples harvested during decompressive/fusion spine surgeries from patients affected by chronic low back pain (CLBP). The aim was to understand if members of this family of receptors played a role in detection a... | TRPV4 and TRPM8 as putative targets for chronic low back pain alleviation | 10.1007/s00424-020-02460-8 |
2021-02-01 | Nitrogen (N) deficiency is one of the factors limiting crop productivity worldwide. As major forms of N, nitrate (NO 3 − ) and ammonium (NH 4 + ) regulate plant growth as signals. Although there are abundant studies on the response of many plants to N stress, the mechanism by which wheat ( Triticum aestivum L.) roots a... | Low-Nitrogen Stress Stimulates Lateral Root Initiation and Nitrogen Assimilation in Wheat: Roles of Phytohormone Signaling | 10.1007/s00344-020-10112-5 |
2021-02-01 | Abstract The results of a study of the unoccupied electronic states of ultrathin films of bis-carboxyphenyl-phthalide (DCA-DPP) and bis-methylphenyl-phthalide (DM-DPP) up to 8 nm thick are presented. The studies are carried out by total current spectroscopy (TCS) in the energy range from 5 to 20 eV above E F during the... | Unoccupied Electronic States and Potential Barrier in Films of Substituted Diphenylphthalides on the Surface of Highly Ordered Pyrolytic Graphite | 10.1134/S1063783421020104 |
2021-02-01 | Although the thin-blade strain ( HR-5 ) of Pyropia haitanensis could be cultivated in the south coast of China, the effect of low-salt tolerance on it is not clear. In this study, the conchospores and blades of the wild cultivated strain ( WT-10 ) of P. haitanensis and HR-5 strain were cultured in media with salinity o... | Low-salt tolerance of the thin-blade strain in Pyropia haitanensis | 10.1007/s10499-020-00637-7 |
2021-02-01 | China plans to pursue low-carbon development in its low-carbon pilot cities to control greenhouse gas emissions. The low-carbon city development is an important method to achieve sustainable development strategy, while it is also a new city development mode to promote natural ecology, low-carbon economy and social happ... | Research on the sustainable development process of low-carbon pilot cities: the case study of Guiyang, a low-carbon pilot city in south-west China | 10.1007/s10668-020-00679-0 |
2021-02-01 | The effects of low molecular weight organic acids (LMWOAs) on the adsorption of quinclorac by sepiolite were investigated using laboratory batch technique. Experiments were conducted with two natural sepiolite samples with different crystal structures and chemical compositions and high-purity sepiolite. The LMWOAs used... | Effects of low molecular weight organic acids on adsorption of quinclorac by sepiolite | 10.1007/s11356-020-11405-8 |
2021-02-01 | A new type of polyhalite potassium ore (NTPPO) was found in the Lower Triassic Jialingjiang Formation, NE Sichuan Basin, SW China. It is water soluble, therefore can be exploited using the water-solution method, and is of great potential of economic value and research significance. Based on cores, thin sections, energy... | Characteristics and origin of a new type of polyhalite potassium ore in the Lower Triassic Jialingjiang Formation, Puguang area, northeastern Sichuan Basin, SW China | 10.1186/s42501-021-00083-3 |
2021-02-01 | In the NW of the Iberian Peninsula, in the region of Lugo, a very exclusive Cambrian phyllite has been quarried and used for construction since prehistoric times, the Filita Verde or green phyllite. There are three varieties of this stone, all of them with the characteristic glitter of phyllites given by the metamorphi... | The Relevance of the Green Phyllites of Lugo (Spain) in the Architectonical Heritage: an Exceptional Roofing Slate Resource | 10.1007/s12371-021-00537-z |
2021-02-01 | In this paper, a fully integrated sub threshold LC voltage controlled oscillator (VCO) is presented. A design methodology is also proposed to find the optimal parameters lowering the power consumption. This methodology has been applied to design oscillators for different frequency bands. Furthermore, an adaptive body b... | Ultra-low-power wideband NMOS LC-VCO design for autonomous connected objects | 10.1007/s10470-020-01613-0 |
2021-02-01 | Crypthecodinium cohnii growth was studied on pure carbon sources (glucose, acetate, glycerol) and low-cost complex carbon sources (sugarcane molasses, crude glycerol and vinegar effluent) for lipid and DHA production. Among the pure substrates, glucose induced the highest lipid content (14.75% w/w DCW) and DHA content ... | Evaluating low-cost substrates for Crypthecodinium cohnii lipids and DHA production, by flow cytometry | 10.1007/s10811-020-02304-z |
2021-02-01 | Foamed and energized fluids fracturing has been used in both conventional and unconventional reservoirs, as they reduce the amount of water used and hence minimize deleterious impact on water-sensitive formations. They also aid in the flow back after treatment in reservoirs where drawdown is limited. In this paper, the... | Improving hydraulic fracturing effectiveness in depleted and low-pressure reservoirs using N2-energized fluids | 10.1007/s13202-020-01060-7 |
2021-02-01 | Deep learning is the fastest growing field in artificial intelligence and has led to many transformative innovations in various domains. However, lack of interpretability sometimes hinders its application in hypothesis-driven domains such as biology and healthcare. In this paper, we propose a novel deep learning model ... | A novel approach for personalized response model: deep learning with individual dropout feature ranking | 10.1007/s10928-020-09724-x |
2021-02-01 | A turbine disk design based on uncertainty quantifies the risks and improves the structural reliability. An optimized design issue related to turbine disk fatigue life reliability with subjective and objective multi-source uncertainties is a three-layer nested analysis process, where each iterative step requires a doub... | Calculation of hybrid reliability of turbine disk based on self-evolutionary game model with few shot learning | 10.1007/s00158-020-02734-w |
2021-02-01 | Abstract In shrimp aquaculture, manufactured diets that include various supplements and alternative fishmeal ingredients are increasingly being used and their effect on the gastrointestinal (GI) microbiota studied. However, dietary effects on different shrimp GI samples are not known. We investigated how a high (HFM) o... | Effect of sample type and the use of high or low fishmeal diets on bacterial communities in the gastrointestinal tract of Penaeus monodon | 10.1007/s00253-020-11052-6 |
2021-02-01 | We studied the effects of low-dose ozone therapy on the sleep quality of patients with coronary heart disease (CHD) and insomnia by measuring the levels of brain-derived neurotrophic factor (BDNF) and GABA in blood serum. The 3-month course of low-dose ozone therapy significantly elevated serum BDNF and GABA in CHD pat... | Low-Dose Ozone Therapy Improves Sleep Quality in Patients with Insomnia and Coronary Heart Disease by Elevating Serum BDNF and GABA | 10.1007/s10517-021-05095-6 |
2021-02-01 | Introduction Inguinal hernias are among the most common surgical diseases in Africa. The current International HerniaSurge Guidelines recommend mesh-based surgical techniques in Low Resource Settings (LRS). This recommendation is currently unachievable in large parts of Africa due to the unaffordability of mesh and lac... | Improving surgical education in East Africa with a standardized hernia training program | 10.1007/s10029-020-02157-y |
2021-02-01 | The aim of the present study was to investigate the influence of low-level red (660 nm) and infrared (780 nm) laser with four different radiance exposures on human umbilical vein endothelial cells (HUVECs) in vitro . HUVECs (1.5 × 10 4 ) were incubated in 96-well culture plates. The cells were maintained in M199 medium... | Photobiomodulation alters the viability of HUVECs cells | 10.1007/s10103-020-03016-z |
2021-02-01 | The paper presents the adhesive strength measurements of the Ni–Cu surface alloy formed on a copper substrate at a different thickness of the transition layer. The formation of the surface alloy is provided by the low-energy high-current electron beam of a microsecond duration; the different thickness of the transition... | Adhesive Strength of Ni–Cu Surface Alloy Formation by Low-Energy High-Current Electron Beam | 10.1007/s11182-021-02237-1 |
2021-02-01 | The product of Aoc3 gene is known as vascular adhesion protein-1 (VAP-1), a glycoprotein contributing to leukocyte extravasation and exhibiting semicarbazide-sensitive amine oxidase activity (SSAO). Regarding the immune functions of VAP-1/SSAO, it is known that mice bearing Aoc3 gene knock-out (AOC3KO) exhibit defects ... | Obesity of mice lacking VAP-1/SSAO by Aoc3 gene deletion is reproduced in mice expressing a mutated vascular adhesion protein-1 (VAP-1) devoid of amine oxidase activity | 10.1007/s13105-020-00756-y |
2021-02-01 | The low-voltage compact gyrotron is suitable for industrial applications. However, the beam-wave interaction efficiency is low in conventional low-voltage gyrotron. To improve the whole tube efficiency, a compact depressed collector is introduced in developing a 75 GHz low-voltage compact gyrotron. The compact depresse... | Study on a Depressed Collector for a 75 GHz Low-Voltage Compact Gyrotron for Industrial Application | 10.1007/s10762-020-00761-8 |
2021-02-01 | The aim of this study is to conduct a narrative review of the literature emphasizing current models of non-specific low back and neck pain with an emphasis on chronic and disabling pain. We include its risk factors, etiology, pathophysiology, and differential diagnosis. Emphasis is also placed on variables of chronific... | Chronic Primary Pain of the Spine: an Integrative Perspective Part 1 | 10.1007/s42399-021-00772-z |
2021-01-30 | Herein, copper oxide/copper sulfide (CuO/Cu x S) composites have been prepared by treating CuO with thiourea by an aqueous hydrothermal route and their thermoelectric properties are studied. The electrical conductivity is improved with the increase in thiourea content, as a result, thermoelectric power factor increased... | CuO/CuxS composites fabrication and their thermoelectric properties | 10.1007/s40243-021-00189-7 |
2021-01-29 | We have carried out ground-based NIRAS (Near-InfraRed Aurora and airglow Spectrograph) observations at Syowa station, Antarctic ( $$69.0^{\circ }\text {S}$$ 69 . 0 ∘ S , $$39.6^{\circ }\text {E}$$ 39 . 6 ∘ E ) and Kiruna ( $$67.8^{\circ }\text {N}$$ 67 . 8 ∘ N , $$20.4^{\circ }\text {E}$$ 20 . 4 ∘ E ), Sweden for conti... | Temporal evolutions of
$$\text {N}_2^+$$
N
2
+
Meinel (1,2) band near
... | 10.1186/s40623-021-01360-0 |
2021-01-29 | Background Antibiotic exposure in term infants has been associated with later obesity. Premature, very-low-birth-weight (birth weight ≤ 1500 g) infants in the neonatal intensive care unit frequently are exposed to antibiotics. Our hypothesis was that in preterm infants, there is a positive linear and dose-dependent rel... | Antibiotic exposure and growth patterns in preterm, very low birth weight infants | 10.1186/s40748-021-00126-6 |
2021-01-28 | This paper aims to gain new insights into clastic buried hill reservoirs. For this purpose, the Permian sandstone reservoirs in the Upper Shihezi Formation, Gubei low buried hill, Jiyang Depression, was taken as the object. Referring to the evolution histories of reservoirs and tectonics, the diagenesis of the reservoi... | Coupling between tectonic activity and diagenetic evolution of a clastic buried hill—a case study from Gubei low buried hill in Jiyang Depression of Bohai Bay Basin | 10.1007/s12517-021-06566-w |
2021-01-23 | Background Although school garden programs have been shown to improve dietary behaviors, there has not been a cluster-randomized controlled trial (RCT) conducted to examine the effects of school garden programs on obesity or other health outcomes. The goal of this study was to evaluate the effects of a one-year school-... | School-based gardening, cooking and nutrition intervention increased vegetable intake but did not reduce BMI: Texas sprouts - a cluster randomized controlled trial | 10.1186/s12966-021-01087-x |
2021-01-21 | Background Chronic nonspecific low back pain (CNSLBP) troubles approximately 30% of people worldwide. Silver needle therapy (SNT) is a treatment method to relieve soft tissue pain through heating. Therefore, this study aimed to observe the effects of SNT on CNSLBP. Methods In this study, 100 patients were randomly divi... | Efficacy of silver needle therapy for the treatment of chronic nonspecific low back pain: a prospective, single-center, randomized, parallel-controlled clinical trial | 10.1186/s13063-021-05040-y |
2021-01-20 | In the upcoming 5G and beyond systems, ultra-reliable and low latency communication (URLLC) has been considered as the key enabler to support diverse mission-critical services, such as industrial automation, remote healthcare, and intelligent transportation. However, the two stringent requirements of URLLC: extremely l... | Ultra-reliable and low-latency communications: applications, opportunities and challenges | 10.1007/s11432-020-2852-1 |
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