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2020-10-01 | Abstract The synthesis was performed of grafted copolymers of acrylic acid on low molecular weight polyethylene in the presence of benzoyl peroxide in o -xylene solution. The formation of copolymers was proved by the methods of functional analysis of carboxyl groups and FTIR spectroscopy. The patterns of synthesis are ... | Synthesis and Structure of Grafted Copolymers of Acrylic Acid and Low Molecular Weight Polyethylene | 10.1134/S1070427220100031 |
2020-10-01 | Numerous studies have been carried out to ascertain the mechanisms of low-salinity and smart water flooding technique for improved oil recovery. Focus was often on brine composition and, specifically, the cationic content in sandstone reservoirs. Given the importance of the salt composition and concentration, tweaking ... | An investigation into the roles of chlorides and sulphate salts on the performance of low-salinity injection in sandstone reservoirs: experimental approach | 10.1007/s13202-020-00972-8 |
2020-10-01 | The necessity to produce modern composites with an acceptable impact resistance is an essential task in automobile and aerospace industry that needs to be satisfied. This capability is addressed by noteworthy energy absorption augmentation which is the most vital characteristic of such composite materials. In this pape... | Effect of interleaved composite nanofibrous mats on quasi-static and impact properties of composite plate | 10.1007/s13726-020-00845-1 |
2020-10-01 | This article examines the choices that might be needed for India’s energy sector under alternative mitigation scenarios. The article draws on the CD-LINKS study—a collaborative EU project under which seven pathways based on different combinations of carbon budget (high and low) and policy implementation (early and late... | India’s energy sector choices—options and implications of ambitious mitigation efforts | 10.1007/s10584-020-02885-1 |
2020-10-01 | Abstract Unoccupied electronic states in the energy range from 5 to 20 eV above the Fermi level have been studied in ultrathin films of dimethyl-substituted thiophene–phenylene cooligomers CH 3 -phenylene–thiophene–thiophene–phenylene–CH 3 (CH 3 –PTTP–CH 3 ) on polycrystalline gold surfaces of two types: the ex situ Au... | Unoccupied Electron States of Ultrathin Films of Thiophene–Phenylene Cooligomers on the Surface of Polycrystalline Gold | 10.1134/S1063783420100170 |
2020-10-01 | The performance of FASTlab synthesizers and three-year operational experience at four hospitals in Taiwan were analyzed and summarized. [ 18 F]FDG was daily produced with about 80% (EOB) of RCY and USP-compliant specification at four centers in Taiwan. The easiness to operate the cassette and high RCY of produced [ 18 ... | Performance analysis and operational experience of [18F]FDG production with cassette-type modules in four hospitals of Taiwan | 10.1007/s10967-020-07348-6 |
2020-10-01 | The abnormal noises, such as clunking and popping, are usually generated when the car turns or drives over bumps. It could happen frequently when the free gap (clearance) values in the axial direction of the lower control arm ball joint are higher than normal values. The spherical surface of the ball stud is commonly a... | Practical Evaluation of Ball Stud Plating Effects on the Increase of Free Gap of Ball Joints in the Vehicle | 10.1007/s12239-020-0104-x |
2020-10-01 | Aims Magnesium (Mg) deficiency is detrimental to plant growth. However, how plants respond to Mg deficiency via regulation of Mg uptake and allocation is yet not fully understood. In this study, we tested whether Mg isotope compositions (δ 26 Mg) associated with Mg mass balance of the plants could be used as an indicat... | Magnesium isotope fractionation reflects plant response to magnesium deficiency in magnesium uptake and allocation: a greenhouse study with wheat | 10.1007/s11104-020-04604-2 |
2020-10-01 | New N, N ′-bis(4,6-dimethylpyrimidin-2-yl)- and N, N ′-bis(2,3,5,6-tetrafluorophenyl)-substituted pyromellitic diimides were synthesized. Their properties were studied in comparison with the previously synthesized N, N ′-bis(4-fluorophenyl)pyromellitic diimide. Thermogravimetry, UV spectroscopy, cyclic voltammetry, and... | Synthesis and study of N,N′-disubstituted derivatives of pyromellitic diimide | 10.1007/s11172-020-2983-4 |
2020-10-01 | Abstract Reading the memristor memory cell without changing its resistance state is one of the potential problems to be addressed in the memristor-based memory design. This paper presents a novel read scheme that achieves a non-destructive read operation, consumes less power, provides high endurance and adapts itself b... | Variation-tolerant, low-power, and high endurance read scheme for memristor memories | 10.1007/s10470-020-01702-0 |
2020-10-01 | Groundwater quality samples from 33 wells were collected in the lower Ketar watershed (Ethiopia) to study its suitability for domestic and irrigation purposes. Samples were evaluated for major ions and physicochemical properties. In 58% of the samples analyzed, Ca 2+ is the dominant cation and Na + dominates the remain... | Groundwater quality evaluation for different uses in the lower Ketar Watershed, Ethiopia | 10.1007/s10653-019-00508-y |
2020-10-01 | Plastics composed of polyethylene are non-biodegradable and are mostly harmful to the environment. Literature studies documented that the extent of microbial degradation of low-density polyethylene (LDPE) seems to be insufficient and the underlying mechanisms of such degradation remain unexplored. In the present study,... | Degradation of low-density poly ethylene (LDPE) by Enterobacter cloacae AKS7: a potential step towards sustainable environmental remediation | 10.1007/s00203-020-01926-8 |
2020-10-01 | Reducing nitrogen (N) input can improve crop productivity in cereal-legume intercrops, but the impact on phosphorus (P) acquisition is unclear. A 10-year (2009–2018) field experiment was conducted to quantify how P acquisition by sugarcane ( Saccharum officinarum ) was affected by intercropping with soybean ( Glycine m... | Soybean (Glycine max (L.) Merrill) intercropping with reduced nitrogen input influences rhizosphere phosphorus dynamics and phosphorus acquisition of sugarcane (Saccharum officinarum) | 10.1007/s00374-020-01484-7 |
2020-10-01 | The analyses of hydrocarbon reservoirs in the high-frequency reef and shoal facies of the Lower Ordovician carbonate successions in the Penglaiba Formation (O 1 P) and Yingshan Formation (O 1–2 Y) in the Tazhong (Katake) Uplift in central Tarim basin showed three types of hydrocarbon reservoirs: type 1 associated with ... | Hydrocarbon reservoir development in reef and shoal complexes of the Lower Ordovician carbonate successions in the Tazhong Uplift in central Tarim basin, NW China: constraints from microfacies characteristics and sequence stratigraphy | 10.1007/s13202-020-00936-y |
2020-10-01 | Abstract This paper presents recent data on the population of the anadromous vimba bream ( Vimba vimba vimba ), introduced in the Volga basin. After penetration to the downstream section of the Volga River from the Volgograd Reservoir, vimba bream can be found throughout the entire unregulated stretch downstream of the... | The Distribution of Vimba Bream Vimba vimba
vimba (Actinopterygii: Cyprinidae) in the Unregulated Section of the Lower Volga River | 10.1134/S2075111720040025 |
2020-10-01 | Abstract It is for the first time that silver sulfide colloidal solutions were prepared by chemical deposition from silver nitrate and sodium sulfide solutions in heavy water D 2 O. Sodium citrate served as the stabilizer. The sizes of Ag 2 S nanoparticles in colloidal solutions were assessed by dynamic light scatterin... | Synthesis of Silver Sulfide Colloidal Solutions in Heavy Water D2O | 10.1134/S0036023620100174 |
2020-10-01 | Advanced Internet-of-Things applications require control-oriented codes to be executed with low latency for fast responsivity while their advanced signal processing and decision making tasks require computational capabilities. For this context, we propose three multi-issue core designs featuring an exposed datapath arc... | Energy Efficient Low Latency Multi-issue Cores for Intelligent Always-On IoT Applications | 10.1007/s11265-020-01578-3 |
2020-10-01 | Objective To observe the effect of scraping therapy (ST) on the immune balance of serum helper T (Th) 1/Th2 cells in autologous nucleus pulposus transplantation non-compressive lumbar disc herniation (LDH) model rats, and explore the immune mechanism of ST in reducing LDH pain. Methods Seventy-two male Sprague-Dawley (... | Effect of scraping therapy on Th1/Th2 balance in rats with lumbar disc herniation | 10.1007/s11726-020-1198-4 |
2020-10-01 | Low-carbon pilot (LCP) policy aims to not only achieve economic development but also address climate change problems in China. With a difference-in-difference (DID) approach, this study provides empirical evidence to support the policy’s implementation by analysing its impacts on green total factor productivity (GTFP).... | Can a low-carbon development path achieve win-win development: evidence from China’s low-carbon pilot policy | 10.1007/s11027-019-09897-y |
2020-10-01 | Russia is one of the largest carbon emitters in the world, possessing huge resources of both fossil fuels and zero-carbon energy sources. The Paris Agreement targets require substantial efforts to limit global warming to “well below 2 °C”. Energy-economic modeling provides sound conclusions that continuation of existin... | The low carbon development options for Russia | 10.1007/s10584-020-02780-9 |
2020-10-01 | The role of malondialdehyde-modified low-density lipoprotein (MDA-LDL), an oxidized LDL, in the pathophysiology of autism spectrum disorder (ASD) is unclear. We studied association between MDA-LDL and behavioral symptoms in 11 individuals with ASD and 7 age -matched normal controls. Behavioral symptoms were assessed us... | The role of lipid peroxidation in individuals with autism spectrum disorders | 10.1007/s11011-020-00585-4 |
2020-10-01 | The aim of the present study was to investigate the influence of low-level laser radiation at a wavelength of 650 nm for treating post-herpetic neuralgia, an extremely painful condition which frequently occurs severely in old age and may persist for years with no predictable course. In total, fifteen patients were incl... | Role of low-level laser therapy in post-herpetic neuralgia: a pilot study | 10.1007/s10103-020-02969-5 |
2020-09-29 | Deep-sea sediment is extremely important in marine scientific research, such as that concerning marine geology and microbial communities. The research findings are closely related to the in-situ information of the sediment. One prerequisite for investigations of deep-sea sediment is providing sampling techniques capabl... | Review and Analysis of Key Techniques in Marine Sediment Sampling | 10.1186/s10033-020-00480-0 |
2020-09-29 | Hybrid acoustic-RF systems offer excellent ranging accuracy, yet they typically come at a power consumption that is too high to meet the energy constraints of mobile IoT nodes. We combine pulse compression and synchronized wake-ups to achieve a ranging solution that limits the active time of the nodes to 1 ms. Hence, a... | High precision hybrid RF and ultrasonic chirp-based ranging for low-power IoT nodes | 10.1186/s13638-020-01795-1 |
2020-09-28 | Within the framework of the AdS/CMT correspondence asymptotically anti-de Sitter black holes in four space-time dimensions can be used to analyse transport properties in two space dimensions. A non-linear renormalisation group equation for the conductivity in two dimensions is derived in this model and, as an example o... | A renormalisation group equation for transport coefficients in (2 + 1)-dimensions derived from the AdS/CMT correspondence | 10.1007/JHEP09(2020)169 |
2020-09-26 | Coal is the most important primary energy in China. Although the proportion of coal in China's total energy consumption continues to decline it will still be the main energy in China for a long time in the future. As the largest contributor to China's greenhouse gas emissions, the energy conservation and emission reduc... | Carbon emission assessment and control measures for coal mining in China | 10.1007/s12665-020-09189-8 |
2020-09-22 | This study aims to assess the groundwater quality and the origin of water mineralization in an environment with high anthropogenic pressure in the municipality of Treichville. Twenty-one water samples were analysed to determine the quality. Kruskal–Wallis nonparametric test, Mann–Whitney test, Kohonen algorithm, and wa... | Assessment of the quality of quaternary groundwater under the influence of anthropogenic activities in the low-income neighbourhoods of the Treichville municipality (Abidjan, Côte d’Ivoire) | 10.1007/s42452-020-03478-4 |
2020-09-21 | Background Sweetpotato ( Ipomoea batatas L.) is one of the seven major food crops grown worldwide. Cold stress often can cause protein expression pattern and substance contents variations for tuberous roots of sweetpotato during low-temperature storage. Recently, we developed proteometabolic profiles of the fresh sweet... | Proteomic and metabolic profile analysis of low-temperature storage responses in Ipomoea batata Lam. tuberous roots | 10.1186/s12870-020-02642-7 |
2020-09-21 | Background In order to study the relations of hepatocellular functions, weight gain and metabolic imbalance caused by low-dose antibiotics (LDA) via epigenetic regulation of gene transcription, 32 weaned piglets were employed as animal models and randomly allocated into two groups with diets supplemented with 0 or LDA ... | Multi-omics profiling highlights lipid metabolism alterations in pigs fed low-dose antibiotics | 10.1186/s12863-020-00918-3 |
2020-09-17 | Background Abiotic stresses like low temperatures are contributory factors to the variations observed among species during plant germination, growth, and development. The present study evaluated the morphological and genetic responses of maize ( Zea mays L.) seedling to cold shock induced by a one-time exposure to low ... | Variations in growth and genetic properties of Zea mays L. germinants exposed to cold shock | 10.1186/s42269-020-00415-8 |
2020-09-15 | In this work, we propose a bistable vibration energy harvester that can be used for non-resonant low-frequency, low-amplitude excitation. The design exploits magnetic bistability created between a pair of repelling magnets. Unlike base-excited beams, our design relies on placing one magnet on the tip of a cantilever be... | A bistable electromagnetic energy harvester for low-frequency, low-amplitude excitation | 10.1007/s40430-020-02607-9 |
2020-09-14 | In 2016/2017, H5N8 highly pathogenic avian influenza (HPAI) virus of the Goose/Guangdong lineage spread from Asia to Europe, causing the biggest and most widespread HPAI epidemic on record in wild and domestic birds in Europe. We hypothesized that the wide dissemination of the 2016 H5N8 virus resulted at least partly f... | Enterotropism of highly pathogenic avian influenza virus H5N8 from the 2016/2017 epidemic in some wild bird species | 10.1186/s13567-020-00841-6 |
2020-09-14 | Background The association between long-term exposure to air pollutants, including nitrogen dioxide (NO 2 ), carbon monoxide (CO), sulfur dioxide (SO 2 ), ozone (O 3 ), and particulate matter 10 μm or less in diameter (PM 10 ), and mortality by ischemic heart disease (IHD), cerebrovascular disease (CVD), pneumonia (PN)... | Association between long-term exposure to air pollutants and cardiopulmonary mortality rates in South Korea | 10.1186/s12889-020-09521-8 |
2020-09-11 | Background The thermal plasticity of life-history traits receives wide attention in the recent biological literature. Of all the temperature-dependent traits studied, developmental rates of ectotherms are especially often addressed, and yet surprisingly little is known about embryonic responses to temperature, includin... | Stagewise resolution of temperature-dependent embryonic and postembryonic development in the cowpea seed beetle Callosobruchus maculatus (F.) | 10.1186/s12898-020-00318-2 |
2020-09-11 | The valence and spin states of Fe in (Fe,Al)-bearing bridgmanite (bdg) affect its physical properties, which is important for the interpretation of geophysical observations. Currently, tens of studies on the compressibility and spin states of Fe-bearing bdg have been reported. A consensus is that Fe-bearing bdg shows s... | Anomalous compressibility in (Fe,Al)-bearing bridgmanite: implications for the spin state of iron | 10.1007/s00269-020-01109-3 |
2020-09-11 | Background The use of obstetric early-warning-systems (EWS) has been recommended to improve timely recognition, management and early referral of women who have or are developing a critical illness. Development of such prediction models should involve a statistical combination of predictor clinical observations into a m... | Development and validation of an obstetric early warning system model for use in low resource settings | 10.1186/s12884-020-03215-0 |
2020-09-11 | The groundwater samples were found to be contaminated with high concentrations of uranium (U) in Punjab state as well as in few other locations of India. U being chemically toxic can deteriorate health when ingested. Hence, there is a need to remove U from contaminated water using an efficient, cheap and user friendly ... | An investigation on the efficiency of low-cost adsorbents in removing uranium from water samples | 10.1007/s13201-020-01299-9 |
2020-09-11 | Background Atrial fibrillation and heart failure are common coexisting conditions requiring hospitalisation for heart failure and death. Pulmonary vein isolation is a well-established option for symptomatic atrial fibrillation and for atrial fibrillation concomitant with heart failure with reduced left ventricular ejec... | Semi-urgent pulmonary vein isolation using cryoballoon for haemodynamically unstable atrial fibrillation storm in a patient with low cardiac output syndrome: a case report | 10.1186/s12872-020-01682-z |
2020-09-10 | Background The Schmorl’s nodes (SNs) are defined as the herniation of the intervertebral disc into the vertebral body. Endplate fractures around the Schmorl’s node could result in severe back pain that is similar to vertebral compression fractures. The objective of this study was to prospectively analyze the surgical e... | Percutaneous vertebroplasty (PVP) to treat specialized type of endplate fractures around the Schmorl’s node: a prospective study of 65 patients | 10.1186/s13018-020-01873-6 |
2020-09-10 | The rapid population growth and industrialisation has contributed to the production of large quantities of solid wastes that should be managed properly. This study was conducted to investigate the generation and composition of solid wastes at different income levels during weekdays and weekends in a particular zone in ... | Generation and composition of municipal solid waste: case study, extension 7, Palapye, Botswana | 10.1007/s42452-020-03496-2 |
2020-09-09 | Kions were introduced onto Cu/SAPO-34 catalysts via the ion-exchange process in order to improve their stability under low-temperature hydrothermal aging. The changes in structure and copper-species contents of these catalysts upon hydrothermal aging were probed in order to investigate their effects on selective cataly... | Promotional effect of ion-exchanged K on the low-temperature hydrothermal stability of Cu/SAPO-34 and its synergic application with Fe/Beta catalysts | 10.1007/s11783-020-1322-1 |
2020-09-09 | Background Exposure to ionizing radiation induces complex stress responses in cells, which can lead to adverse health effects such as cancer. Although a variety of studies investigated gene expression and affected pathways in human fibroblasts after exposure to ionizing radiation, the understanding of underlying mechan... | Comparison of time and dose dependent gene expression and affected pathways in primary human fibroblasts after exposure to ionizing radiation | 10.1186/s10020-020-00203-0 |
2020-09-07 | Biobased products (biobased materials, bioenergy/biofuels, and biobased chemicals) are the futuristic replacement of fossil-based chemicals and considerably the best way of transiting towards a low-carbon economy (LCE) and which also can simultaneously mitigate the global challenges associated with the depletion of abi... | Biobased Products and Life Cycle Assessment in the Context of Circular Economy and Sustainability | 10.1007/s42824-020-00007-x |
2020-09-04 | In this work, two quinoxline type monomers, 10,14-bis(4-octyl-2-thienyl)-dipyrido[3,2- a :2′,3′- c ] [1, 2, 5] thiadiazolo[3,4- i ] quinoxaline (OTPTP) and 10,14-bis(4-octyl-2-thienyl)-dibenzo[ a, c ][1,2,5]thiadiazolo [3,4- i ] quinoxaline (OTBTP) were prepared, and the electrochromic features of their polymer films t... | Low band gap polymers based on the electrochemical polymerization of Phenazine: studies on the color changing ability in near-infrared region | 10.1007/s10965-020-02266-3 |
2020-09-04 | Purpose The poor permeability of new drug candidates across intestinal epithelial membranes complicates their development in oral form. This study investigated the potential of cell-penetrating peptides (CPPs) to improve the intestinal permeation and absorption of low-permeable low-molecular-weight (low-MW) drugs. Meth... | Evaluation of Cell-Penetrating Peptides as Versatile, Effective Absorption Enhancers: Relation to Molecular Weight and Inherent Epithelial Drug Permeability | 10.1007/s11095-020-02874-0 |
2020-09-03 | Background Based on the previous investigation in our institution, the incidence of intraoperative hypothermia in neonates was high. Since September 1st, 2019, the recommendation had been launched to utilize ≤1 L/min fresh gas flow during the neonates’ surgical procedure. We therefore intended to evaluate the associati... | The low fresh gas flow anesthesia and hypothermia in neonates undergoing digestive surgeries: a retrospective before-after study | 10.1186/s12871-020-01140-5 |
2020-09-03 | Background The use of molecular diagnostics has revealed an unexpectedly large number of asymptomatic low-density malaria infections in many malaria endemic areas. This study compared the gains in parasite prevalence obtained by the use of ultra-sensitive (us)-qPCR as compared to standard qPCR in cross-sectional survey... | Utility of ultra-sensitive qPCR to detect Plasmodium falciparum and Plasmodium vivax infections under different transmission intensities | 10.1186/s12936-020-03374-7 |
2020-09-03 | In many quantum quench experiments involving cold atom systems the post-quench phase can be described by a quantum field theory of free scalars or fermions, typically in a box or in an external potential. We will study mass quench of free scalars in arbitrary spatial dimensions d with particular emphasis on the rate of... | Quantum quench and thermalization to GGE in arbitrary dimensions and the odd-even effect | 10.1007/JHEP09(2020)027 |
2020-09-03 | In this paper, the importance of Lithocodium–Bacinella facies (LB facies) as reservoir rock in the Lower Cretaceous carbonates of the Persian Gulf will be addressed. The studied interval belongs to the reservoir zone of upper Fahliyan Formation, which occurs in one of the giant offshore oilfields. A detailed examinatio... | Diagenesis and reservoir characteristics of the Lithocodium–Bacinella facies in a Lower Cretaceous reservoir, eastern Persian Gulf Basin | 10.1007/s10347-020-00608-7 |
2020-09-01 | Abstract The paper analyzes the nature of constant low-temperature impact toughness in low-carbon low-alloy 10Mn2VNbAl steel after helical rolling at 850°C. The analysis shows that when rolled, the steel changes the electronic spectrum via shifting its low-energy states in the reciprocal space of lattice curvature to h... | Nanoscale Mesoscopic Structural States in Low-Alloy Steels for
Martensitic Phase Formation and Low-Temperature Toughness
Enhancement | 10.1134/S1029959920050021 |
2020-09-01 | LiFePO 4 /C was prepared by employing coprecipitation method and carbothermal reduction method using FeSO 4 with different purity as the iron source. The purity of FeSO 4 has a great influence on the morphology of FePO 4 , but has little effect on the morphology of LiFePO 4 /C. The cycling performance decreases with th... | Effect of FeSO4 purity on low temperature performance of LiFePO4/C | 10.1007/s11581-020-03594-6 |
2020-09-01 | Abstract Distillation columns can have high economic impact on small-scale ethanol production because their capital cost and, therefore, a lower investment in this equipment may turn it more feasible. The present work aims to assess the substitution of stainless steel and borosilicate glass by polymeric materials in th... | Low-cost small-scale distillation column: assessment of polymeric materials on its economic, chemical, mechanical, and environmental performance | 10.1007/s10098-020-01897-w |
2020-09-01 | When the supercapacitor (SC) adopts electrolyte with solvent, the desolvation mechanism in the charging process is helpful for the electrode material to adsorb more electrolyte ions and improve the capacitance. However, the desolvation effect is temperature dependent, and it is difficult to achieve at low temperature. ... | Thermal dynamic study of the gradual desolvation in submicropores for carbon-based supercapacitor at low temperature | 10.1007/s11581-020-03575-9 |
2020-09-01 | Abstract To meet the corrosion challenge of pipeline steel under complex mixed cases, the corrosion behavior of X65 steel joints welded by employing three low-temperature phase transformation welding wires was investigated. The low temperature phase transformation electrodes welded joints were exposed to saturated CO 2... | Electrochemical Corrosion Behavior of X65 Pipeline Steel Joints Welded by Low Temperature Phase Transformation Electrodes | 10.1134/S1027451020050407 |
2020-09-01 | A novel circulation process of electrolytic manganese metal (EMM) production with low-grade manganese oxide ores (LGMO) and high-sulfur manganese ores (HSMO) was studied and developed. The unit operations mainly include dissolution of LGMO, purification of leach liquor and electrolysis for EMM preparation. Based on the... | A Novel Circulation Process to Effectively Produce Electrolytic Manganese Metal (EMM) with Low-Grade Manganese Oxide Ores and High-Sulfur Manganese Ores | 10.1007/s13369-020-04656-7 |
2020-09-01 | Thermal analysis of the binary system (Al(NO 3 ) 3 )–(Cu(NO 3 ) 2 ) of different ratios was performed by using differential scanning calorimetry and thermogravimetric analysis. The eutectic temperature of the binary salt mixture was determined to be 65 °C. Moreover, the degradation temperature, specific heat, latent he... | Low-melting-temperature binary molten nitrate salt mixtures for solar energy storage | 10.1007/s10973-020-09683-y |
2020-09-01 | Abstract— The titanium alloy Ti–6Al–4V with strongly nonequilibrium α- and β-phases has been studied for the first time. For this, it was subjected to cross-helical rolling (CHR) at T = 1000°C (above the polymorphic transformation temperature), and then quenched in water in order to partially preserve vanadium in the α... | Fractography, Fracture Toughness and Structural Turbulence Under Low-Temperature Shock Loading of a Nonequilibrium Titanium Alloy Ti–6Al–4V | 10.3103/S0025654420050155 |
2020-09-01 | Materials with intrinsically low thermal conductivity are of fundamental interests. Here we report a new sort of simple one-dimensional (1D) crystal structured bismuth selenohalides (BiSeX, X = Br, I) with extremely low thermal conductivity of ∼0.27 W m −1 K −1 at 573 K. The mechanism of the extremely low thermal condu... | Extremely low thermal conductivity from bismuth selenohalides with 1D soft crystal structure | 10.1007/s40843-020-1407-x |
2020-09-01 | The effects of temperature on low cycle fatigue (LCF) behavior of Superni 263 superalloy in the solution annealed plus aged state were examined between 298 and 1023 K. The initial microstructure consisted of intragranular spherical γ ʹ (22 nm), intergranular M 23 C 6 carbides and a few un-dissolved primary MC particles... | Comprehensive Assessment of Low Cycle Fatigue Behavior of Nickel-Base Superalloy Superni 263 in the Range 298–1023 K | 10.1007/s41403-020-00095-w |
2020-09-01 | Mn–Ce–VO x /TiO 2 (MnCeVTi), Mn–CeO x /TiO 2 (MnCeTi) and Mn–VO x /TiO 2 (MnVTi) nanocomposites as SCR DeNO x catalysts were synthesized by a modified sol–gel method. All catalysts shows high NO x conversion of over 90% at low temperature between 125 and 200 °C with GHSV of 30,000 h −1 . MnCeVTi catalyst demonstrates t... | Synthesis and Characterization of Mn–Ce–VOx/TiO2 Nanocomposite for SCR of NOx at Low Temperatures: Role of Mn, Ce and V Oxide | 10.1007/s11244-020-01315-x |
2020-09-01 | Abstract The magneto-impedance response in Co 35 Fe 65 /Cu/Co 35 Fe 65 thin film magneto-impedance cells deposited by the thermal evaporation method has been studied with single and bilayer structures at the substrate temperature 300 K and 150 K. While the thin film deposited at 300 K has BCC structure, the amorphous c... | Magneto-Impedance in Co35Fe65/Cu/Co35Fe65 Single and Bi-layer Thin Films | 10.1007/s13391-020-00237-w |
2020-09-01 | Abstract A review of techniques for recycling dispersed waste of ferroalloy production is conducted. The formation and accumulation of cyclone dust (catch product of crushing or CPC), formed during the grinding and fractionation of ferroalloys is considered. The drawbacks of the known techniques of handling this dust a... | Recycling Dispersed Waste of Ferroalloy Production on the Basis of Metallurgical Self-Propagating High-Temperature Synthesis | 10.3103/S0967091220090089 |
2020-09-01 | COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) is an experiment employing cryogenic calorimeters, dedicated to direct dark matter search in underground laboratories. Its goal is to cross-check the annual modulation signal the DAMA collaboration has been detecting for about 2... | COSINUS: Cryogenic Calorimeters for the Direct Dark Matter Search with NaI Crystals | 10.1007/s10909-020-02464-9 |
2020-09-01 | Technology for low-temperature carbonitriding combined with high temperature tempering of cold-worked die steel 6Kh4M2FS (DI55) is proposed. The high efficiency of a paste-like coating based on amorphous carbon and nitrogen-containing components (carbamide and potassium ferricyanide) during die steel cyaniding in the t... | Pack Cyaniding of Steel 6Kh4M2FS in Order to Increase Heavily-Loaded Die Durability | 10.1007/s11041-020-00565-6 |
2020-09-01 | Carbonate reservoirs in Asmari block of Missan oilfield are characterized by complex geological characteristics. Temporary plugging is commonly used for effective damage control caused by the working fluid when drilling in such complex multi-pressure reservoirs and for preventing leakage, blowout, and collapse in long ... | A New Drilling Fluid System for Temporary Plugging of Low Permeability Carbonate Reservoirs Containing H2S and CO2 | 10.1007/s10553-020-01173-z |
2020-09-01 | In this work, we investigate low-temperature sintering behavior of the 90W-7Ni-3Fe alloy by introducing Sn. The 90W-7Ni-3Fe alloy with different Sn contents (0, 0.5, 1.0 and 1.5 wt.%) was fabricated via vacuum sintering at 1300 °C for 90 min. When 1 wt.% Sn was added, the liquidus temperature of the 90W-7Ni-3Fe alloy d... | Study on Low-Temperature Sintering Behavior of 90W-7Ni-3Fe Alloys: The Influence of Sn Addition | 10.1007/s11665-020-05055-7 |
2020-09-01 | Abstract In this paper, the microstructures and properties of hot rolled ultra-low carbon steel sheet produced by different compact strip production (CSP) processes were investigated. The softening mechanism was also discussed and the control strategy was proposed in order to obtain optimum properties. Result showed th... | Microstructural Characterization and Softening Mechanism of Ultra-Low Carbon Steel and the Control Strategy in Compact Strip Production Process | 10.1007/s12540-019-00392-2 |
2020-09-01 | The development of reliable additive manufacturing (AM) technologies to process metallic materials, e.g. selective laser melting (SLM), has allowed their adoption for manufacturing final components. To date, ensuring part quality and process control for low-volume AM productions is still critical because traditional st... | Defect Probability Estimation for Hardness-Optimised Parts by Selective Laser Melting | 10.1007/s12541-020-00381-1 |
2020-09-01 | An experiment is performed for explosive convergence (collapse) of a cylindrical shell of low carbon steel with a ferrite-perlite structure. It is revealed that during ultra-rapid heating caused by high-speed deformation austenite formation occurs in an unusual sequence: first, free ferrite is converted, then pearlite.... | Features of Austenite Formation in Low-Carbon Steel during High Speed Heating Induced by High-Speed Deformation | 10.1007/s11041-020-00560-x |
2020-09-01 | Abstract The influence of modification by low-temperature atmospheric-pressure plasma and steam sterilization on the properties of track membranes based on polyethylene terephthalate is studied. It is found that the action of hot steam under pressure changes the topography of the surface of the membranes with the forma... | The Investigation of the Influence of Low-Temperature Plasma and Steam Sterilization on the Properties of Track Membranes Made of Polyethylene Terephthalate | 10.1134/S2075113320050111 |
2020-09-01 | Ginger is an important Chinese flavoring agent and a traditional herbal medicine. Traditional drying method for ginger may cause severe damage and destroy the chemical and physical qualities. Carbonic maceration (CM) is an efficient and low-cost technology, which can increase the mass transfer rate during drying proces... | Effect of Carbonic Maceration (CM) on the Vacuum Microwave Drying of Chinese Ginger (Zingiber officinale Roscoe) Slices: Drying Characteristic, Moisture Migration, Antioxidant Activity, and Microstructure | 10.1007/s11947-020-02504-y |
2020-09-01 | The present study was focused on the bioenergy potential of Madhuca longifolia (mahua, MH) seeds to produce renewable fuel via thermocatalytic conversion. The physicochemical characterization of MH seed confirmed its bioenergy potential. Three model-free models were used to predict the pyrolysis kinetics of MH. The the... | Pyrolysis characteristics, fuel properties, and compositional study of Madhuca longifolia seeds over metal oxide catalysts | 10.1007/s13399-019-00469-3 |
2020-09-01 | This study aims to interpret the temperature and pressure behavior of an open-hole horizontal gas well (OHHGW) in a low-permeability gas reservoir in order to obtain the permeability and production profile of the OHHGW. First, the mathematical model, which is comprised of viscous dissipation, friction, the Joule–Thomso... | An Interpretation Method for a Gas Production Profile Based on the Temperature and Pressure Behavior of Low-Permeability Gas Reservoirs | 10.1007/s13369-020-04545-z |
2020-09-01 | The high-spectral-resolution detection of hard X-rays (E > 20 keV) is a challenging and nearly unexplored area in space astrophysics. Traditionally hard X-ray detectors present moderate spectral resolutions, although few tens of eV one could open new frontiers in the study of nuclear processes and high-temperature plas... | Fabrication of Bismuth Absorber Arrays for NTD-Ge Hard X-ray Microcalorimeters | 10.1007/s10909-020-02475-6 |
2020-09-01 | Nowadays, one of the most important global goals in medicine is to find ways to control cancer. Magnetic fluid hyperthermia is a promising method for cancer treatment due to its localized influence and low damage to healthy tissue. Ferrite nanoparticles are widely used in this cancer modality because of their low Curie... | Synthesis of (Mn(1−x)Znx)Fe2O4 nanoparticles for magnetocaloric applications | 10.1007/s10971-020-05237-8 |
2020-09-01 | Abstract Amorphous InGaZnO (a-IGZO) TFTs become mainstream at the forefront of display backplanes and are actively expanding their area for next-generation optoelectronic devices such as flexible and transparent displays. For flexible displays, low temperature processed passivation technology is required to keep the re... | Improving Electrical Stability of a-InGaZnO Thin-Film Transistors with Thermally Deposited Self-Assembled Monolayers | 10.1007/s13391-020-00232-1 |
2020-09-01 | Large quantities of catalysts after their useful life are discarded as waste material from fertilizer industry. Disposal of spent catalyst is a problem as it falls under the category of hazardous industrial waste due to its heavy metals concentration. This investigation applied a novel approach to extract copper from s... | A Greener Approach to Extract Copper from Fertilizer Industry Spent Catalyst | 10.1007/s13369-020-04652-x |
2020-09-01 | Abstract Changes in the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), and catalase (CAT) for the plants Nicotiana tabacum L. and Secale cereale L. during low-temperature hardening have been investigated. It was determined that a transient increase in the content of MDA occurs in tobacco plants at ... | Change of Antioxidant Enzyme Activity during Low-Temperature Hardening of Nicotiana tabacum L. and Secale cereale L. | 10.1134/S1021443720050118 |
2020-09-01 | Museums, historical buildings mainly located in urban centers, may be seriously affected by pollution and other critical urban atmospheric conditions. In addition to museums, there are many other different cultural heritage indoor environments each having different characteristics, mainly depending on the type of prese... | Micro-climatic investigation and particulate detection in indoor environments: the case of the historical museum of Bersaglieri in Rome | 10.1007/s12210-020-00935-5 |
2020-09-01 | Abstract A combination of large void volume and rich microporous structure enables expanded graphite (EG) to possess excellent adsorption properties. Furthermore, it is discovered to be hydrophilic with the capability of adsorbing NO x . The ball milling method was applied in preparation of the MnO x /TiO 2 modified by... | Enhancement of Low-Temperature NH3-SCR Catalytic Activity and H2O Resistance Ability Over MnOx/TiO2 Catalyst by Expanded Graphite | 10.1007/s10562-020-03170-7 |
2020-09-01 | Abstract —The eight-year dynamics of the quality of motherwort ( Leonurus quinquelobatus Gilib.) seed progeny growing for more than 60 years under chronic radiation in the East-Ural Radioactive Trace (EURT) zone, in comparison with background cenopopulations, has been studied. The absorbed dose rates of the parent plan... | Interannual Quality Variability in Motherwort (Leonurus quinquelobatus) Seed Progeny under Chronic Radiation Exposure | 10.1134/S1067413620050033 |
2020-09-01 | Abstract Two series of comparative experiments are carried out to select the most effective version of pressure oxidation technology (POT) for processing a pyrrhotine-containing charge (PCC) consisting of a mixture of ELNPP TCP and NPC NCP (enriched low-nickel pyrrhotine product and nickel-pyrrhotine concentrate). In t... | Substantiation of a Combined Technology for the Hydrometallurgical Beneficiation of a Pyrrhotine-Containing Charge Based on Pressure Oxidation Leaching Using Ferric Sulfate as a Pyrrhotine Oxidizer | 10.1134/S003602952009013X |
2020-09-01 | Abstract M7 block of Santanghu oilfield is an abnormal low temperature tight oil reservoir. The effective development is very difficult. In this paper, we develop a new composite viscosity reducer called CSY-1. The synergistic effect of these agents provides the reducer with both dispersion and emulsification capacitie... | A New Composite Viscosity Reducer for Abnormal Low Temperature Extra-Heavy Oil Reservoir with High Acid Value | 10.1134/S0965544120090054 |
2020-09-01 | Abstract Composites Fe m O n –Fe 3 – x Ti x O 4 have been synthesized using the sol–gel method and hydrothermal treatment. The conditions chosen for the synthesis favor the formation of composites containing titanomagnetite in a relatively low concentration. The theoretical analysis of the magnetic properties of the ... | Magnetic States of Two-Phase Synthesized FemOn–Fe3 – xTixO4 Particles: Experimental and Theoretical Analysis | 10.1134/S1063783420090139 |
2020-09-01 | The computation methods of the thermodynamic properties are used for theoretical studies of multicomponent refrigerant blends (MRBs) for low-temperature throttling refrigeration units, providing cryostatting modes for cooled objects in the temperature range of –90 – –160 °С. The article presents the comparative analysi... | Comparative Analysis of Equations of State for Calculating the Thermodynamic Properties of a Vapor-Liquid Multicomponent Refrigerant Blend Comprising the Working Fluid of a Low-Temperature Throttling Refrigeration Unit | 10.1007/s10556-020-00786-9 |
2020-09-01 | Abstract The reaction of KBiO 3–δ with Ba 2+ ions at a Ba : Bi ratio of 0.5‒1.6 (mol.) in a 10 M. KOH solution under reflux (~140°C) has furnished oxides, which composition and structure have been studied by X-ray diffraction, energy dispersive X-Ray, and chemical analysis. Pseudo cubic ( а = 4.271‒4.285 Å) perovskite-... | Low-Temperature Synthesis of K–Ba–Bi–O Oxides in KOH
Solution | 10.1134/S1070363220090157 |
2020-09-01 | We have developed a test setup to measure frequency up-conversion gain in superconductor–insulator–superconductor (SIS) junctions at W band (75–110 GHz). A conventional SIS mixer with Nb/AlO x /Nb tunnel junctions was used as a frequency up-converter. An up-converted signal is measured by a room-temperature down-conver... | Observation of Frequency Up-Conversion Gain in SIS Junctions at W Band | 10.1007/s10909-020-02470-x |
2020-09-01 | Low-alloy steel bolts are used in applications where high strength is needed, although they presented low corrosion resistance, limiting their application in harsh environments. Ni-P coatings could be an alternative to protect low-alloy steel bolts against corrosion. However, Ni-P coatings must be submitted to an inter... | Strength and Deformation Properties of Low-Alloy Steel Bolts with Electroless Ni-P Coating: An Investigation of Two Thermal Routes | 10.1007/s11665-020-05066-4 |
2020-09-01 | The pyrolysis of low-rank coal is considered as the optimal method of realizing clean and efficient production of blue coke, tar, and gas. The experiments of low-rank coal microwave pyrolysis under CO 2 , CH 4 , H 2 , and circulating gas (CG) are studied in a custom-designed microwave oven to clearly clarify the effect... | Spectroscopic Analysis of Products from Low-Rank Coal Microwave Pyrolysis: Effect of Reaction Atmosphere | 10.1007/s10812-020-01064-5 |
2020-09-01 | Coastal engineering is an important measure in coping with coastal risks. With global warming and sea level rising, the sustainable adaptation of the low-lying areas becomes urgent. An in-depth understanding of the relationship between coastal engineering and environmental changes can help improve the adaptation capabi... | Coastal engineering evolution in low-lying areas and adaptation practice since the eleventh century, Jiangsu Province, China | 10.1007/s10584-020-02738-x |
2020-09-01 | Abstract In hot desert climates, the office buildings with high-performance glazing systems (HPGSs) provide better indoor thermal and visual comfort to the occupants due to the advanced coatings which prevent the undesired heat gain and daylight. However, these systems save energy in the use phase; it could consume mor... | A comparative life cycle assessment of three high-performance glazing systems for office buildings in a hot desert climate zone | 10.1007/s10098-020-01891-2 |
2020-09-01 | Abstract The effect of MeV protons on the surface properties of a low-density polyethylene film was studied using EPR spectroscopy and thermomechanical spectrometry. The diblock semicrystalline structure of polyethylene was preserved upon proton irradiation; the molecular weight decreased, and the weight fraction of th... | Influence of Accelerated Protons on the Molecular–Topological Structure of Polyethylene | 10.1134/S0018143920050021 |
2020-09-01 | Abstract The paper reviews studies of the Laboratory of Theoretical Physics of the Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences. Two research directions are discussed: transport properties of two-dimensional excitonic systems and electron transport in two-dimensional topologi... | Transport Properties of Two-Dimensional Topological Insulators and Excitonic Condensates | 10.3103/S8756699020050027 |
2020-09-01 | An equiatomic MgAlSiCrFe high-entropy alloy was synthesized by mechanical alloying. The alloying behavior, phase evolution, phase composition and thermal stability of as-milled nanostructured powders of HEA were ascertained through X-ray diffraction and transmission electron microscopy, scanning electron microscopy and... | Phase Evolution and Thermal Stability of Low-Density MgAlSiCrFe High-Entropy Alloy Processed Through Mechanical Alloying | 10.1007/s12666-020-02039-y |
2020-09-01 | Abstract Dinosaur footprints were found in Pliensbachian terrigenous rocks in the central North Caucasus. Tracks of different sizes (12‒35 cm) were identified at three levels of the Mizur Formation section. The sediments accumulated on the wide (15‒20 km) shelf of a paleobasin. The coastal land was covered with abundan... | Dinosaur Footprints in Terrigenous Sediments on the Early Jurassic Shelf of the Central North Caucasus: Sedimentological and Paleoecological Settings | 10.1134/S002449022005003X |
2020-09-01 | Abstract Optical infrared gas analyzers are developed for mixtures of vapors of liquefied natural gas and air. It is found that a network of them allows temperatures of −100 to +60°C to be measured along with volume concentrations of hydrocarbons С = 0.5–100 vol % with temporal responses of less than 1–2 s when analyzi... | Infrared Gas Analyzers for Monitoring Emissions of Flammable and Explosive Natural Gas into the Atmosphere | 10.1134/S0036024420090332 |
2020-09-01 | Phycobiliproteins (PBPs) are pigment proteins that comprise phycobilisomes (PBS), major light-harvesting antenna complexes of cyanobacteria and red algae. PBS core substructures are made up of allophycocyanins (APs), a subfamily of PBPs. Five paralogous AP subunits are encoded by the Far-Red Light Photoacclimation (FaR... | Characterization of cyanobacterial allophycocyanins absorbing far-red light | 10.1007/s11120-020-00775-2 |
2020-09-01 | Ozone in the upper troposphere–lower stratosphere (UTLS) is primarily regulated by tropospheric dynamics. Understanding mechanisms driving ozone variability at the UTLS is crucial to evaluate the transport of mass to and from the lower stratosphere. The El Niño-Southern Oscillation (ENSO) is the primary coupled mode ac... | The combined influence of ENSO and PDO on the spring UTLS ozone variability in South America | 10.1007/s00382-020-05340-0 |
2020-09-01 | The corrosion behavior of two types of low-carbon steel (denoted steel A and steel B) in H 2 S/CO 2 was investigated through immersion tests, and the effect of Ti microalloying on the corrosion mechanism was analyzed. The microstructures, corrosion kinetics, corrosion surface morphologies, corrosion phases, cross-secti... | Effect of Ti Microalloying on the Corrosion Behavior of Low-Carbon Steel in H2S/CO2 Environment | 10.1007/s11665-020-05077-1 |
2020-09-01 | Eco-environmental changes during interglacials with an astronomical background similar to that of the Holocene are potentially helpful for understanding the future climatic evolution. Marine oxygen isotope stage (MIS) 19 is similar to the Holocene in astronomical background, both being characterized by a low eccentrici... | Eco-environmental changes in the Chinese Loess Plateau during low-eccentricity interglacial Marine Isotope Stage 19 | 10.1007/s11430-020-9628-5 |
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