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2020-08-01 | The need to increase electrification in the automotive industry has been well recognized. Overshadowed by their larger counterparts used for the car’s traction is the increasing number of small electric drives used in automotive applications. As a matter of fact, up to 100 of such drives are used within a typical mid-s... | Performance improvements of auxiliary drives for automotive pump and fan applications | 10.1007/s00502-020-00797-7 |
2020-08-01 | Abstract — The article addresses factors causing damage—in particular, flow accelerated corrosion wear (FAC) of tube walls—to the evaporator operating in the low-pressure loop of the Ep-258/310/35-15.0/3.14/0.44-540/535/263 (P-132) heat-recovery steam generator used as part of a 795-MW combined-cycle plant. Factors inf... | Investigation into Factors Causing Damage to Low-Pressure Loop Evaporating Tubes of Large-Capacity Heat-Recovery Steam Generators | 10.1134/S0040601520080030 |
2020-08-01 | Background Low flow anesthesia (LFA) provides a saving up to 75% and improves the dynamics of inhaled anesthesia gas, increases mucociliary clearance, maintains body temperature, and reduces water loss. LFA has been recommended for anesthesiologists in recent years to avoid high fresh gas flow (FGF). However, LFA use i... | Feasibility, safety, and economic consequences of using low flow anesthesia according to body weight | 10.1007/s00540-020-02782-y |
2020-08-01 | A study was undertaken to assess the morphological variations during the period 1969–2018 in the twenty-one islands in Gulf of Mannar, southeast India, using Survey of India Toposheet, Google Earth images and field survey techniques. The results show that two of the islands have eroded and submerged, fifteen islands ar... | Eroding islands of Gulf of Mannar, Southeast India: a consequence of long-term impact of coral mining and climate change | 10.1007/s11069-020-03961-6 |
2020-08-01 | Acid anhydrides are used by chemical industries as plasticizers. Trimellitic acid (TMA) is an acid anhydride widely utilized in factories to produce paints, varnishes, and plastics. In addition to causing direct irritant effects, TMA can augment antibody responses in exposed factory workers leading to occupational asth... | Health Effects of Trimellitic Anhydride Occupational Exposure: Insights from Animal Models and Immunosurveillance Programs | 10.1007/s12016-020-08801-w |
2020-08-01 | Pyruvate decarboxylase (PDC) is the main enzyme in ethanol fermentation in plant low-oxygen response. Expression of the PDC gene can be induced by submergence, a low-oxygen state, which has been demonstrated in Arabidopsis, maize and rice among other plants. However, it is unknown whether the gene expression has simila... | Submergence response of pyruvate decarboxylase family genes in adzuki bean | 10.2478/s11756-020-00421-1 |
2020-08-01 | Near-surface disposal is anticipated to be the preferred option for the disposal of low and intermediate levels of radioactive waste in Bangladesh. A geographic information system (GIS) and a multi-criteria analysis were used for screening all of Bangladesh to identify potential areas to establish a near-surface dispos... | Disposal of Low and Intermediate Levels of Radioactive Waste in Bangladesh — An Investigation on the Selection of a Suitable Site by Using a Geographic Information System and a Multi-criteria Analysis | 10.3938/jkps.77.201 |
2020-08-01 | The traditional strength reduction method ( SRM ) uses a single reduction parameter to reduce the cohesion ( c ) and friction coefficient (tan φ ) of a slope. However, this paper develops a new SRM using two different reduction parameters to reduce c and tan φ , by which the critical state of the slope can strictly sim... | Research on a two-parameter reduction method that strictly satisfies the upper and lower limit theorem | 10.1007/s10064-020-01736-8 |
2020-08-01 | Cell culture-based blood–brain barrier (BBB) models are useful experimental tools for developing central nervous system drugs. Several endothelial cell sources exist for BBB models, including primary cultured brain endothelial cells and immortalized cell lines. Among them, primary cell-based models are considered suita... | Comparison of the rate of dedifferentiation with increasing passages among cell sources for an in vitro model of the blood–brain barrier
| 10.1007/s00702-020-02202-1 |
2020-08-01 | An SARS-CoV‑2 haben sich in den letzten Monaten weltweit Millionen von Menschen infiziert, Hunderttausende sind an den Folgen einer Infektion gestorben. Das Ende der Pandemie ist nicht absehbar und viele Menschen haben Ängste, sich in unterschiedlichen Settings zu infizieren. Der Gasteiner Heilstollen (GHST) ist eine w... | Der Gasteiner Heilstollen und eine mögliche Ansteckungsgefahr im Therapiebereich mit Viren | 10.1007/s12688-020-00350-6 |
2020-07-31 | Background Globally, 15 million infants are born preterm each year, and 1 million die due to complications of prematurity. Over 60% of preterm births occur in Sub-Saharan Africa and south Asia. Care at birth for premature infants may be critical for survival and long term outcome. We conducted a prospective audit to as... | Identifying women giving birth preterm and care at the time of birth: a prospective audit of births at six hospitals in India, Kenya, Pakistan and Uganda | 10.1186/s12884-020-03126-0 |
2020-07-31 | Background Alpha-fetoprotein (AFP) has been widely used for many years as a serum marker for hepatocellular carcinoma (HCC). However, AFP has been recognized as having poor sensitivity. More and more studies have concluded that circulating microRNAs (miRNAs) might be a promising biomarker that could complement AFP. How... | The role of circulating microRNAs for the diagnosis of hepatitis B virus-associated hepatocellular carcinoma with low alpha-fetoprotein level: a systematic review and meta-analysis | 10.1186/s12876-020-01345-5 |
2020-07-31 | Introduction We treated a patient with late-stage unilateral bypass thrombosis after bilateral axillary-femoral bypass with lateral axillary-profunda femoris artery (LAx-PF) bypass. Case presentation A 64-year-old male patient was admitted to our hospital for acute left lower limb ischemia. Six years ago, he underwent ... | Case report: lateral axillary-profunda femoris artery bypass for acute lower limb ischemia due to thrombosis after bilateral axillofemoral bypass | 10.1186/s13019-020-01232-w |
2020-07-29 | In recent years, cooling technology for liquid xenon (LXe) detectors has advanced driven by the development of dark matter (DM) detectors with target mass in the 100–1000 kg range. The next generation of DM detectors based on LXe will be in the 50,000 kg (50 t) range requiring more than 1 kW of cooling power. Most of t... | A LN2-based cooling system for a next-generation liquid xenon dark matter detector | 10.1007/s41365-020-00786-7 |
2020-07-29 | Purpose Tuberculosis (TB) is a highly infectious disease caused by Mycobacterium tuberculosis ( Mtb ), which often parasites in macrophages. This study is performed to investigate the bactericidal effect and underlying mechanisms of low-frequency and low-intensity ultrasound (LFLIU) combined with levofloxacin-loaded PL... | A synergistic bactericidal effect of low-frequency and low-intensity ultrasound combined with levofloxacin-loaded PLGA nanoparticles on M. smegmatis in macrophages | 10.1186/s12951-020-00658-7 |
2020-07-29 | Climate change currently affects the resilience and aquatic ecosystem. Climate change alters rainfall patterns which have a great impact on river flow. Annual flooding is an important hydrological characteristic of the Mekong River Basin (MRB) and it drives the high productivity of the ecosystem and biodiversity in the... | Assessing the effects of climate change on flood inundation in the lower Mekong Basin using high-resolution AGCM outputs | 10.1186/s40645-020-00353-z |
2020-07-29 | Background Extracellular vesicles (EVs) from human mesenchymal stem cells (hMSCs) are known to be mediators of intercellular communication and have been suggested as possible therapeutic agents in many diseases. Their potential use in intervertebral disc (IVD) degeneration associated with low back pain (LBP) is yet to ... | Extracellular vesicles from human mesenchymal stem cells expedite chondrogenesis in 3D human degenerative disc cell cultures | 10.1186/s13287-020-01832-2 |
2020-07-27 | Low-speed friction riveting, a novel method of joining hybrid structures, is a promising technology for joining polymer with metallic structures in automotive and aerospace industries. It offers unique advantages such as weight reduction, reduced consumption of fuel and its cost without compromising the required mechan... | Low-speed friction riveting: a new method for joining polymer/metal hybrid structures for aerospace applications | 10.1007/s40430-020-02519-8 |
2020-07-22 | In this study, newly designed perylene diimide based polymers P1 and P2 were synthesized and were used as hole transporting materials in place of the more common spiro-OMeTAD in perovskite solar cells. The co-polymers P1 - P2 were synthesized by Suzuki and direct arylation polymerizations of 2,9-bis(7-bromo-9,9-dioctyl... | Perylene diimide based low band gap copolymers: synthesis, characterization and their applications in perovskite solar cells | 10.1007/s10965-020-02212-3 |
2020-07-21 | Silicon Physical Unclonable Function (PUF) is a general hardware security primitive for security vulnerabilities. Recently, Quasi-adiabatic logic based physical unclonable function (QUALPUF) has ultra low-power dissipation; hence it is suitable to implement in low-power portable electronic devices such radio frequency ... | Quasi-Adiabatic SRAM Based Silicon Physical Unclonable Function | 10.1007/s42979-020-00253-5 |
2020-07-20 | Microalgae Nannochloropsis sp. is a widely recognized renewable biodiesel feedstock. The ability of this microalgae to absorb CO 2 constitutes an added value toward reducing global warming. However, the process of optimizing its growth still involves many challenges. Photoinhibition, which takes places during microalga... | Enhanced biomass productivity of microalgae Nannochloropsis sp. in an airlift photobioreactor using low-frequency flashing light with blue LED | 10.1186/s40643-020-00331-9 |
2020-07-20 | Background The objective of this randomized clinical trial was to evaluate Low-Level Laser Therapy (LLLT) effectiveness in spontaneous and chewing pain reduction following initial orthodontic archwire placement. Methods 26 patients (mean age 20.07 ± 3.13 years) with maxillary Little’s Irregularity Index (LII) of 7 mm o... | Low-level laser therapy effectiveness in reducing initial orthodontic archwire placement pain in premolars extraction cases: a single-blind, placebo-controlled, randomized clinical trial | 10.1186/s12903-020-01191-7 |
2020-07-19 | In Argentina, the yield potential of rice ( Oryza sativa L.) under suboptimal temperatures of temperate regions and during early sowing in tropical regions depends on its low-temperature germinability (LTG) and subsequent cold tolerance at the seedling stage (CTS). This study focused on the phenotyping and identificati... | Phenotyping and QTL mapping for cold tolerance at the germination and seedling stages in Argentine temperate rice | 10.1007/s10681-020-02661-3 |
2020-07-17 | Background Plants are always exposed to dynamic light. The photosynthetic light use efficiency of leaves is lower in dynamic light than in uniform irradiance. Research on the influence of environmental factors on dynamic photosynthesis is very limited. Nitrogen is critical for plants, especially for photosynthesis. Low... | Dynamic light caused less photosynthetic suppression, rather than more, under nitrogen deficit conditions than under sufficient nitrogen supply conditions in soybean | 10.1186/s12870-020-02516-y |
2020-07-16 | In this work, the idea of parallel computing for a full adder has been proposed. Based on parallel computing, a new architecture of full adder (A-I) has been proposed in which the input needs to pass through only two transistors to reach the output node which results in reduced delay time. The second design of full add... | Implementation of parallel computing and adiabatic logic in full adder design for ultra-low-power applications | 10.1007/s42452-020-3188-z |
2020-07-14 | Background Maize ( Zea mays L.) is one of the main agricultural crops with the largest yield and acreage in the world. However, maize germplasm is very sensitive to low temperatures, mainly during germination, and low temperatures significantly affect plant growth and crop yield. Therefore, the identification of genes ... | Identification of candidate tolerance genes to low-temperature during maize germination by GWAS and RNA-seq approaches | 10.1186/s12870-020-02543-9 |
2020-07-14 | Drilling and blasting play an important role in operation cycle of a mine or quarry. Optimum blast design plays a pivotal role to achieve maximum utilization of explosive energy and blast fragmentation. Only 20 to 30% of explosive energy is utilized for fracturing and fragmentation of rock, and the rest of the energy i... | Reduction of blast-induced ground vibration and utilization of explosive energy using low-density explosives for environmentally sensitive areas | 10.1007/s12517-020-05645-8 |
2020-07-13 | We have developed the low-temperature conformal ZnO nanowire fabrication on flexible plastic substrates by utilizing the solution-processible metal seed-assisted hydrothermal ZnO crystallization. Structural evolution of ZnO nanowires controlled by major parameters involving growth temperature, growth time, and seed coa... | Low-temperature large-area fabrication of ZnO nanowires on flexible plastic substrates by solution-processible metal-seeded hydrothermal growth | 10.1186/s40580-020-00235-6 |
2020-07-13 | The hypothesis that the incorporation of halloysite nanotubes (HNTs) into low-density polyethylene (LDPE)/thermoplastic starch (TPS) blends could lead to materials with mechanical and flow properties close to those of pure LDPE but with improved potential biodegradability, was investigated. A 50 wt.%/50 wt.% LDPE/TPS b... | Effect of incorporation of Halloysite nanotubes on the structure and properties of low-density polyethylene/thermoplastic starch blend | 10.1007/s10965-020-02185-3 |
2020-07-09 | Pressmud is one of the most abundant wastes produced in the sugarcane industry; however, far too little attention has been paid to it as a reactive material for pollutant removal. This paper investigates the potential use of the composted pressmud for Cd 2+ removal and considers the possible remobilization of the ion a... | The Potential Use of Pressmud as Reactive Material for Cd2+ Removal: Adsorption Equilibrium, Kinetics, Desorption, and Bioaccessibility | 10.1007/s11270-020-04746-0 |
2020-07-09 | Background Reduced protein diet manifested potential to mitigate heat production based on the concept of ideal amino acid profile. The hypothesis of this study was that lactating sows fed a low crude protein (LCP) diet with supplemental amino acid produce less heat compared to those fed a high crude protein (HCP) diet ... | Effect of dietary near ideal amino acid profile on heat production of lactating sows exposed to thermal neutral and heat stress conditions | 10.1186/s40104-020-00483-w |
2020-07-09 | Low-cost air quality sensors are widely used to improve temporal and spatial resolution of air quality data. In Lima, Peru, only a limited number of reference air quality monitors have been installed, which has led to a lack of data for establishing environmental and health policies. Low-cost technology is promising fo... | Development of a multiple regression model to calibrate a low-cost sensor considering reference measurements and meteorological parameters | 10.1007/s10661-020-08440-w |
2020-07-06 | The well-known archaeological site of Anahita Temple at Kangavar is one of the most important Iranian stone monuments. It has been dated by various authors in an interval extended from Achaemenid to Sasanian Persian Empires (sixth century BCE to seventh century AD). Significant weathering has been occurred in various s... | The deterioration process of limestone in the Anahita Temple of Kangavar (West Iran) | 10.1186/s40494-020-00411-1 |
2020-07-06 | The major conduit of water and sediment discharges from the mighty Ganges-Brahmaputra-Meghna river system to the Bay of Bengal, the Lower Meghna River (LMR), experiences rapid morphological changes with significant environmental and socioeconomic consequences to the surrounding areas. This study measures the rate of ba... | Assessing bank dynamics of the Lower Meghna River in Bangladesh: an integrated GIS-DSAS approach | 10.1007/s12517-020-05514-4 |
2020-07-02 | The Lower Ordovician succession, consisting of the Yingshan and Penglaiba formations, encompasses significant petroleum reservoirs in Yubei area, southwest Tarim Basin. Mesogenetic dissolution and dolomitization strongly contributed to the increase in rock porosities here. Wells YB 7, YB 5, and YB 1-2X drilled in easte... | Mesogenetic diagenesis of the Ordovician limestone in Yubei area, Tarim Basin, NW China | 10.1007/s13146-020-00610-8 |
2020-07-01 | Results of preparing Portland cement by low-energy technology using technogenic raw materials are presented. Coal mining waste and tephritobasalt in a ratio of 1:1 are used as the clay component, and granulated lead slags are used instead of scarce pyrite cinder. Correlation of the influence of charge compositions, sat... | Preparation Low-Energy Content Cement from Technogenic Raw Materials | 10.1007/s11148-020-00449-5 |
2020-07-01 | Abstract A UV-crosslinkable two-component organically modified silicate (ORMOSIL) sol–gel coating was made using 3-methacryloxypropyltrimethoxysilane (MaPTMS) and tetraethoxysilane (TEOS) in two stages. In the first stage, key synthetic parameters, such as use of co-solvents, reaction temperature, reaction time, and ca... | Curable hybrid materials for corrosion protection of steel: development and application of UV-cured 3-methacryloxypropyltrimethoxysilane-derived coating | 10.1007/s11998-019-00317-z |
2020-07-01 | The paper presents the results of numerical simulation for the process of production of hollow microspheres during heating and melting of porous particles of silica (the precursor) by a flow of low-temperature plasma. This model takes into account the partial capturing of gas in the particle and offers the laws of evol... | Simulation of production of hollow silica particles in a plasma flow. Part 2. Hollow particle production dynamics | 10.1134/S0869864320040125 |
2020-07-01 | Abstract A study of the thermal effects observed during the low-temperature pyrolysis of various types of pelletized biomass (sunflower husk, coniferous wood, litter-litter mass) is presented. It is shown that during sunflower husk torrefaction the greatest exothermic effect is observed and the possible reasons for its... | Thermal Effects during Biomass Torrefaction | 10.3103/S0361521920040084 |
2020-07-01 | With the purpose of further investigating the influence of aging on the tensile behaviors of hydroxyl-terminated polybutadiene (HTPB) propellant at low temperatures under dynamic loading, uniaxial tensile stress responses of thermal accelerated aged propellant samples at different temperatures (223–298 K) and strain ra... | Tensile behaviors of thermal aged HTPB propellant at low temperatures under dynamic loading | 10.1007/s11043-019-09413-4 |
2020-07-01 | A new low-power Si 1− x Ge x pocket junctionless single-gate tunnel field-effect transistor (JLSGTFET) is designed to achieve steep subthreshold performance and a better I ON / I OFF ratio (∼ 10 8 ) in sub-20-nanometer technology node. The mole fraction of Ge represented by x is kept at 0.3 for the SiGe pocket region. ... | Low-Power Efficient p+ Si0.7Ge0.3 Pocket Junctionless SGTFET with Varying Operating Conditions | 10.1007/s11664-020-08145-3 |
2020-07-01 | Abstract A hydrogeochemical and isotopic study was conducted in the western portion of the Celaya Valley Aquifer, Mexico, to assess the role of dissolved carbon dioxide in groundwater contamination. The partial pressure of carbon dioxide value is used to evaluate a complex hydrogeochemical environment, and the carbon d... | Evaluation of the carbon dioxide behavior in a thermal aquifer located at Central Mexico and its relation to silicate weathering | 10.1007/s13762-020-02683-3 |
2020-07-01 | Abstract The paper analyzes the nucleation and growth of bainite in low-carbon low-alloy 09Mn2Si steel doped with titanium carbonitride nanoparticles in impact toughness testing. The analysis shows that such particles segregate at low-angle boundaries, retarding the formation of high-angle ones, and when impacted into ... | Hardening Mechanism in Low-Carbon Low-Alloy Steels with a
Simultaneous Increase in Ductility and Fracture Toughness | 10.1134/S1029959920040098 |
2020-07-01 | A high-building multi-directional pipe joint (HBMDPJ) was fabricated by wire and arc additive manufacturing using high-strength low-alloy (HSLA) steel. The microstructure characteristics and transformation were observed and analyzed. The results show that the forming part includes four regions. The solidification zone ... | Microstructure and mechanical properties of high-strength low alloy steel by wire and arc additive manufacturing | 10.1007/s12613-019-1919-1 |
2020-07-01 | This study investigated the applicability of low transformation temperature (LTT) arc welding consumables to improve fatigue strength against weld root failure. Transverse attachment joints formed by single-sided welding, similar to rib-to-deck connections in orthotropic steel bridge decks, were fabricated using an LTT... | Fatigue strength of transverse attachment steel joints with single-sided arc weld using low transformation temperature welding consumable | 10.1007/s40194-020-00915-1 |
2020-07-01 | Abstract The change in mechanical properties due to low temperatures and the associated damage are studied for various metals. Cracks in austenitic steel are found to be due to large carbides, nitrides, and carbonitrides. The time for a brittle crack to propagate in metal depends on the grain size, the elastic modulus ... | Low-Temperature Damage to Metals | 10.3103/S1068798X20070175 |
2020-07-01 | Abstract The reasons for the fall in the discharge capacity of the LiMn 2 O 4 spinel composition with a Norit carbon filler in the redox reaction with lithium at a temperature of 271 K were analyzed using cyclic voltammetry and impedance spectroscopy. A comparison is made between the electrochemical behavior of LiMn 2 ... | LiMn2O4–Norit at a Low Temperature in Comparison with LiMn2O4—MWCNT and LiMn2O4–EUZ–М Graphite in the Prototype Li-Battery | 10.3103/S106837552004002X |
2020-07-01 | This study predicts numerically the performance of low-GWP refrigerants [R152a, R1234yf and R1234ze(E)] as an alternative to R134a in a vapor compression refrigeration system. The plate heat exchanger was used as a condenser, and the appropriate correlations available in the published literature were used to predict th... | Comparative Performance of Low-GWP Refrigerants as Substitutes for R134a in a Vapor Compression Refrigeration System | 10.1007/s13369-020-04525-3 |
2020-07-01 | In this research, combustion behaviour of three crude oils with different °API gravities was analysed. The thermogravimetric analyser (TGA) and differential scanning calorimeter (DSC) experiments were performed using three different heating rates (2, 5, and 10 °C min −1 ) under air atmosphere. The reaction regions, bur... | Low-temperature oxidation reactions of crude oils using TGA–DSC techniques | 10.1007/s10973-019-09066-y |
2020-07-01 | Abstract The issue of the formation of the compound composition of low-molecular-weight organic compounds in aquatic macrophytes, which make up their low-molecular-weight metabolism, has hardly been studied when introducing them into new habitats. The study aims to compare the component composition of the low-molecular... | Change of Low-Molecular-Weight Metabolome of Alien Species Potamogeton pectinatus L. in Lake Ladoga in Comparison with Population of Native Range | 10.1134/S2075111720030066 |
2020-07-01 | Compositions, technology features, and the main properties of cement-free refractory concretes (CFRC) based on a silica-sol binder are considered. Concretes of high-alumina and corundum compositions of CFRC, as well as in the Al 2 O 3 –SiO 2 –SiC–C system predominate in this group. Improved thermal and thermomechanical... | Cement-Free Refractory Concretes. Part 4. Refractory Concretes based on Silica Sol Binders | 10.1007/s11148-020-00447-7 |
2020-07-01 | Abstract Austenitic stainless steels (ASSs) offer many advantages over carbon and/or graphite composites for bipolar plates of proton exchange membrane fuel cells (PEMFCs). However, its corrosion resistance in PEMFCs operating conditions is lower. A low temperature (450°C) salt bath nitriding technique for different du... | Influence of Time on Low Temperature Salt Bath Nitriding and its Corrosion Behavior of 316L ASS in PEMFC Environment | 10.1134/S2070205120040243 |
2020-07-01 | In this paper, T-joint samples in a 1300 MPa yield strength steel were produced using conventional or low transformation temperature (LTT) type consumables. The welded samples were either subjected to high-frequency mechanical impact (HFMI) treatment or to shot-peening. Fatigue testing was performed under fully reverse... | Comparison of effect of shot-peening with HFMI treatment or use of LTT consumables on fatigue strength of 1300 MPa yield strength steel weldments | 10.1007/s40194-020-00917-z |
2020-07-01 | (7 R ,8 S )-diaminopelargonic acid transaminase from the cold-adapted Gram-negative bacterium Psychrobacter cryohalolentis ( Pcryo361 ) is able to react with unnatural substrates including ( S )-( +)-1-phenylethylamine, aldehydes and α-diketones. Additionally, Pcryo361 is active at 0–50 °C and retains up to 10% of the ... | Effects of pH and temperature on (S)-amine activity of transaminase from the cold-adapted bacterium Psychrobacter cryohalolentis | 10.1007/s00792-020-01174-0 |
2020-07-01 | Laboratory simulation of recrystallization annealing in continuously operating units is performed for rolled IF-steels of nine different compositions of laboratory and industrial melting. It is established that by controlling parameters of low-temperature processing regimes in a CAU and CHGU, it is possible to improve ... | Study of the Effect of Recrystallization Annealing Regimes in Continuous Operating Units on the State of If-Steel Solid Solution and Mechanical Properties | 10.1007/s11015-020-01000-0 |
2020-07-01 | Abstract A relatively new approach to obtaining metal materials containing several principal elements in equiatomic concentrations which look promising for replacing commercially used alloys is proposed. Such materials are called high-entropy alloys (HEAs). Studies show that HEAs tend to form a simple solid-solution st... | Centrifugal Metallothermic SHS of Cast Co–Cr–Fe–Ni–Mn–(Х) Alloys | 10.3103/S1067821220040070 |
2020-07-01 | Cleanliness of aluminum-killed ultra-low carbon steel produced through BOF–RH–CC and BOF–LF–RH–CC was comparatively investigated by nitrogen–oxygen analysis, SEM analysis and thermodynamic calculation to seek for an optimum refining process. The results show that the non-metallic inclusions with area above 8 μm 2 could... | Comparative Study on the Cleanliness of Ultra-low Carbon Al-Killed Steel by Different Refining Processes | 10.1007/s12666-020-01988-8 |
2020-07-01 | We have combined new titanite, zircon, and apatite fission-track and apatite [U–Th–(Sm)]/He analyses with previously published U–Pb, Rb–Sr, and 40 Ar/ 39 Ar thermochronological data to reconstruct the Cenozoic thermal evolution of the Central Rhodope Metamorphic Complex (CRMC), exposed mainly in southern Bulgaria and t... | Cenozoic thermal evolution of the Central Rhodope Metamorphic Complex (Southern Bulgaria) | 10.1007/s00531-020-01862-4 |
2020-07-01 | Abstract A phenomenological model of the kinetics of austenite decomposition of low-carbon low-alloy high-strength steels is presented. The model is based on experimentally obtained empirical dependences linking the transformation rates with the specific power of the heat flux from the metal volume and with the tempera... | Phenomenological Model of Austenite Decomposition Kinetics in Low-Carbon Low-Alloy High-Strength Steels | 10.3103/S0967091220070153 |
2020-07-01 | A study has been made of the activation energy of the conductance of a p – n -4H-SiC 〈Al〉 structure created through the doping of silicon carbide with aluminum. The doping was implemented by a novel method of low-temperature diffusion, in which the diffusion of aluminum in silicon carbide is stimulated by a carbon- and... | Activation Energy of the Conductance of p–n-4H-SiC 〈Al〉 Structures Doped with Aluminum by the Method of Low-Temperature Diffusion | 10.1007/s10891-020-02205-5 |
2020-07-01 | The refrigerator unit based on electrically driven vapor compression technology consumes high energy, associated with high cost and loss of ecosystem. Recently, solar thermal energy emerges as a key research area and introducing it in refrigerator application has happened extremely fast. Solar thermal refrigeration sys... | Performance of ejector refrigeration cycle based on solar energy working with various refrigerants | 10.1007/s10973-020-09319-1 |
2020-07-01 | Polyamide 6 (PA6) is a polymer largely applied in the packing industry; however, it has limitations like high water absorption, notch-sensitive impact and high electrical resistance. Some strategies have been developed aiming to improve these drawbacks, as blending PA6 with other polymers, like linear low-density polye... | Development of antistatic packaging of polyamide 6/linear low-density polyethylene blends-based carbon black composites | 10.1007/s00289-019-02928-3 |
2020-07-01 | The tetragonal crystalline form of boron nitride remains in theoretical prediction stage till date without being synthesized in real practice and in accordance; properties could not be verified experimentally. Here we synthesize tetragonal boron nitride through a low-cost chemical synthesis route for the first time alo... | Advent of a Wide-Band-Gap Semiconducting Low-Density Material Possessing Significantly High Specific Hardness | 10.1007/s11665-020-04915-6 |
2020-07-01 | Abstract A material in the form of a multilayer structure based on low-temperature LT-GaAs grown on (111)A-oriented substrates is proposed for fabrication of THz photoconductive antennas. These structures contain active LT-GaAs layers and doping acceptor GaAs:Si-based layers. At the optical pump power of 19 mW and the ... | THz Radiation of Photoconductive Antennas based on {LT-GaAa/GaAa:Si} Superlattice Structures | 10.1134/S0030400X20070097 |
2020-07-01 | The properties of steel parts after carburizing in low-pressure acetylene are studied. The thickness of the carburized layer, its hardness, the microstructure, and the hardness of the core are determined after carburizing at 900 – 960°C with simultaneous shortening of the process from 104 to 44 min. The data obtained f... | Influence of the Temperature of Vacuum Carburizing on the Thickness of the Carburized Layer and Properties of Steel Parts | 10.1007/s11041-020-00549-6 |
2020-07-01 | The present study has investigated the effect of changes in accelerated cooling (ACC) and finish rolling temperature (FRT) on the mechanical properties of high-strength low-alloy (HSLA) Nb-V-Ti steel plate of non-sour API 5LX70 linepipe during the thermomechanical controlled process (TMCP). Tensile test results showed ... | Effect of Cooling Rate and Finish Rolling Temperature on Structure and Strength of API 5LX70 Linepipe Steel Plate | 10.1007/s11665-020-04961-0 |
2020-07-01 | Abstract Cellulose nanocrystals (CNCs) were surface modified with 3-isocyanatopropyl triethoxysilane (ICPTS) in tetrahydrofuran at 62–63 °C using triethylamine as a catalyst. ICPTS modified CNCs were further studied as a nanofiller in nanocomposites with linear low-density poly(ethylene) (LLDPE) prepared by melt proces... | Silane modified cellulose nanocrystals and nanocomposites with LLDPE prepared by melt processing | 10.1007/s10570-020-03181-y |
2020-07-01 | A series of Ho-modified Mn/Ti catalysts with various content of Ho were prepared by impregnation method, and the low-temperature catalytic performance was tested. Techniques of BET, SEM, XRD, H 2 -TPR, and XPS were carried out to research the effects of Ho modification on the physicochemical properties of Mn/Ti catalys... | Improved activity of Ho-modified Mn/Ti catalysts for the selective catalytic reduction of NO with NH3 | 10.1007/s11356-020-07749-w |
2020-07-01 | High-strength steel heavy plates are usually covered with a mill scale after production. Morphology, structure, and chemical composition are determined by several factors, e.g., rolling parameters, cooling rate, quenching method, and alloying elements. As the mill scale might cause pore formation and process instabilit... | Influence of mill scale on weld bead geometry and thermal cycle during GTA welding of high-strength steels | 10.1007/s40194-020-00910-6 |
2020-07-01 | The article considers a method for extracting xenon from gas concentrates on the basis of batch adsorption separation. An experimental unit for studying xenon adsorption dynamics at cryogenic temperatures was developed. Simulations were carried out in order to investigate the process of xenon adsorption from an air sep... | Investigation of Xenon Extraction from ASU Streams by Low-Temperature Adsorption | 10.1007/s10556-020-00770-3 |
2020-07-01 | A surface layer of steel/SiC nanocomposite was fabricated by multiple passes of friction stir processing (FSP) on a low-carbon steel. The characterization methods such as optical microscopy, field emission scanning electron microscopy, microhardness, and wear test were performed to obtain the microstructure and mechani... | Multipass Friction Stir Processing of Steel/SiC Nanocomposite: Assessment of Microstructure and Tribological Properties | 10.1007/s11665-020-04947-y |
2020-07-01 | Low-cycle fatigue properties and uniaxial ratcheting behavior of a 7050-T6 aluminum alloy were investigated by a non-symmetric cycle stress tests at the normal temperature. The low-cycle fatigue behavior of the alloy was evaluated. The effect of the stress rate, stress amplitudes, and mean stresses on its ratcheting pe... | Low-Cycle Fatigue and Ratcheting Lifetime Estimation of a 7050-T6 Aluminum Alloy | 10.1007/s11223-020-00211-9 |
2020-07-01 | We propose a way to increase the wear and crack resistance of the main working tools for roller mills. Bimetallic rollers (with a diameter of 252 mm and a length of 1620 mm) are produced by sequential pouring of alloys with similar temperatures of phase transformations. The microstructure, phase composition, redistribu... | Structure and Properties of Bimetallic Centrifugally Cast Milling Rollers | 10.1007/s11003-020-00397-y |
2020-07-01 | 1,2,3,4-Butanetetracarboxylic acid (BTCA) can impart good anti-wrinkle properties to treated cotton fabrics, but it also causes significant strength loss. In this paper, maleic acid (MA) and acrylic acid (AA) were employed to synthesize a low-molecular-weight copolymer (P(MA–AA)) for the anti-wrinkle finishing of cotto... | Synthesis of a low-molecular-weight copolymer by maleic acid and acrylic acid and its application for the functional modification of cellulose | 10.1007/s10570-020-03201-x |
2020-07-01 | Green chemistry is developing to invent new reactions that are cheaper, cleaner and use less energy. Acetalization is a common strategy for the protection of aldehydes in synthetic chemistry, yet actual protocols of acetals synthesis are limited by difficult workups, the use of high-loading catalyst, harsh reaction con... | Green chemistry: efficient acetalization of aldehydes with alcohols using the acid red 52 photocatalyst | 10.1007/s10311-020-00994-y |
2020-07-01 | The post-orogenic evolution of the European Variscan basement remains difficult to constrain due to the absence of post-orogenic sedimentary records. One of the current ways to access this history is to constrain the thermal evolution of these basement areas through indirect methods such as low-temperature thermochrono... | Lower Cretaceous inversion of the European Variscan basement: record from the Vendée and Limousin (France) | 10.1007/s00531-020-01875-z |
2020-07-01 | In the present study, the Fe-Al-based compositions developed as low-density steel are subjected to addition of Cr and Mn to increase the elastic modulus. In this regard, Fe-3.7Al-3.1Mn and Fe-6.5Al-6.3Cr steels are produced via melting and casting. The steels are cold-rolled to 98% thickness reduction followed by subse... | Effect of Cr and Mn Addition on the Microstructure, Texture, and Mechanical Properties of Ternary Low-Density Steels | 10.1007/s11665-020-04930-7 |
2020-07-01 | Abstract Self-crosslinking styrene-acrylic latexes functionalized with 3-isopropenyl-α,α-dimethyl benzyl isocyanate (TMI) by semibatch emulsion polymerization were prepared. Polymerizations were performed in emulsions with aerosol EF-800 surfactant; remarkable colloidal stability of the copolymer latexes was measured i... | Synthesis of butyl acrylate–styrene–TMI latexes and their application as water-based coatings | 10.1007/s11998-020-00325-4 |
2020-07-01 | Abstract The influence of polar particle centers, in particular, halogen ions adsorbed on the surface of a reactor, and water molecules present in pores and microcracks on the reactor surface on the low-temperature oxidation of hydrogen and organic compounds was simulated. Within the framework of a proposed model, it w... | Modeling of the Effect of Halogen Ions Adsorbed on the Surface of a Reactor in a Complex with Water Molecules upon the Chain Oxidation of Propane | 10.1134/S0023158420040102 |
2020-07-01 | Low temperature (LT) and Ascochyta blight are two major stresses in chickpea ( Cicer arietinum L.) cultivation. After exposure to LT treatments (acclimation, LT, acclimation + LT and control conditions), we evaluated induced responses by pathogen infection in LT-sensitive (ILC533) and -tolerant (Sel96Th11439) chickpea ... | Enhanced Tolerance to Ascochyta Blight in Chickpea Plants via Low Temperature Acclimation | 10.1134/S1021443720040020 |
2020-07-01 | The detection of chlorine and improvement in its detection has remained a challenge despite the use of a single pulse and a dual pulse laser induced breakdown spectroscopic technique (LIBS). In this article, we presented an alternate technique for improving the detection of chlorine (Cl) using LIBS in conjunction with ... | Amelioration in the Detection of Chlorine Using Electric Field Assisted LIBS | 10.1007/s11090-020-10072-4 |
2020-07-01 | Coal gasification slag (CGS) is a carbon-containing solid waste used as an adsorbent to remove low concentrations of mercury from wastewater in a series of batch tests to assess its adsorption properties and safe storage. The results showed that the adsorption of mercury on CGS was a very rapid and efficient process, a... | Rapid removal of low concentrations of mercury from wastewater using coal gasification slag | 10.1007/s11814-020-0546-x |
2020-07-01 | Abstract Adhesive material based on low molecular copolymer of ethylene with vinyl acetate and polymer complex synthesized by radical polymerization of acrylic acid in the presence of ε-caprolactam was developed. The compound of the adhesive was optimized, and the influence of composition and concentration of the compl... | Adhesive Materials Based on Modified Low Molecular Copolymer of Ethylene with Vinyl Acetate | 10.1134/S1995421220030028 |
2020-07-01 | The high-strength low-alloy S460ML and S460N steels were chosen for underwater wet welding of dissimilar T-joints using covered electrodes. For improving the quality of joints, the temper bead welding (TBW) method was used. The application of TBW in pad welding conditions has been investigated earlier but the possibili... | Dissimilar underwater wet welding of HSLA steels | 10.1007/s00170-020-05617-y |
2020-07-01 | The effect of heat treatment on corrosion resistance of low-alloy pipe steels is investigated in relation to oilfield pipeline operating conditions. It is established that after pipe bulk heat treatment at 720 °C metal corrosion resistance increases, but at a lower temperature of 680 °C no significant change is detecte... | Effect of Heat Treatment in Pipe Processing Stage on Corrosion Resistance of Micro-Alloyed Steel Hot-Rolled Products | 10.1007/s11015-020-00999-6 |
2020-07-01 | To evaluate the efficacy of group embryo culture under low-oxygen tension in benchtop incubators on human embryo development in vitro. The study was designed as a prospective, patient blind, randomized, controlled trial of a complex intervention. One hundred forty-eight women undergoing IVF were recruited in our fertil... | Effect of Group Embryo Culture under Low-Oxygen Tension in Benchtop Incubators on Human Embryo Culture: Prospective, Randomized, Controlled Trial | 10.1007/s43032-020-00150-5 |
2020-07-01 | The present study assesses the Paenibacillus sp. D9 lipopeptide biosurfactant synthesis in cheap substrates including functional properties and applicability for varying biotechnological processes. Different experimental setups were made for oil dispersion, heavy metals removals from contaminated environments, and wash... | Biotechnological Applications of Paenibacillus sp. D9 Lipopeptide Biosurfactant Produced in Low-cost Substrates | 10.1007/s12010-020-03246-5 |
2020-07-01 | Abstract Magnetite-gold hybrid magnetic nanoparticles of the dumbbell type were used to immobilize two proteins: α-chymotrypsin and the Bowman–Birk inhibitor. It is shown that under the influence of a low-frequency magnetic field (50 Hz), the activity of chymotrypsin bound in a complex with an inhibitor is drastically ... | Regulation of Biocatalysis with the α-Chymotrypsin–Bowman–Birk Inhibitor Pair Immobilized on Magnetite-Gold Hybrid Nanoparticles Using a Non-Heating Low-Frequency Magnetic Field | 10.3103/S0027131420040100 |
2020-07-01 | Abstract The formation of unoccupied electronic states and the boundary potential barrier during thermal deposition of tetracyanoquinodimethane (TCNQ) films to 7 nm in thickness on a (SiO 2 ) n -Si surface has been studied. The electronic characteristics of the surface under study are measured by the total current spec... | Propagation of Low-Energy Electrons and the Density of Unoccupied States in Ultrathin TCNQ Layers on the Oxidized Silicon Surface | 10.1134/S1063783420070112 |
2020-07-01 | Abstract Globus-M2—a new 1-Tesla spherical tokamak—was recently launched. The main features and research directions of this machine in scope of fusion–fission reactor development are described. Main results of the first experimental campaign with toroidal magnetic field up to 0.73 T and plasma current up to 0.33 MA are... | First Globus-M2 Results | 10.1134/S1063780X20070016 |
2020-07-01 | Abstract A comparative study has been performed for the structures of the maxima of the density of unoccupied electronic states (DOUS) in ultrathin films of the naphthalene-1,4,5,8-tetracarboxyl acid dianhydride (NTCDA) and naphthalene-1,8-dicarboxyl acid anhydride (NDCA) and two types of films based on phthalides: 3,3... | Density of Vacant Electronic States of Semiconductor Films of Molecules of Naphthalene and Diphenylphthalide Modified by Electroactive Functional Groups | 10.1134/S1063783420070100 |
2020-07-01 | Pesticide residues are detected in food items globally at levels that may cause health problems. Paper-based analytical devices have emerged as an alternative low-cost and field-based tools for determining target analytes including the pesticide residues. However, the paper devices with colorimetric detection system ar... | A Combined System of Paper Device and Portable Spectrometer for the Detection of Pesticide Residues | 10.1007/s12161-020-01770-y |
2020-07-01 | The literature shows associations between maternal exposures to PM 2.5 and adverse pregnancy outcomes. There are few data from Latin America. We have examined PM 2.5 and pregnancy outcomes in Lima. The study included 123,034 births from 2012 to 2016, at three public hospitals. We used estimated daily PM 2.5 from a newl... | Association between maternal exposure to particulate matter (PM2.5) and adverse pregnancy outcomes in Lima, Peru | 10.1038/s41370-020-0223-5 |
2020-07-01 | The thioredoxin (Trx) system is an important enzyme family that regulates cellular redox homeostasis. Protein expression of Trx system family members has been assessed in various cancers and linked to various clinicopathological variables, disease progression, treatment response and survival outcomes but information is... | Thioredoxin System Protein Expression Is Associated with Poor Clinical Outcome in Adult and Paediatric Gliomas and Medulloblastomas | 10.1007/s12035-020-01928-z |
2020-07-01 | The use of low embankments is of significant concern for ecological protection in arid-oasis areas. Based on the project of Sansha Expressway located in Kashgar City, Xinjiang, China, physical model tests were conducted in this study to investigate the dynamic response of the low embankment as per the effects of road s... | Low embankment dynamic response under vehicle traffic loads in arid-oasis areas | 10.1007/s11629-020-5980-z |
2020-07-01 | Due to the decline of formation pressure in the middle and late periods of low permeability reservoir development, the development effect deteriorates. Therefore, it is essential to restore and maintain reasonable formation pressure. Based on the two-phase fractional flow equation in low permeability porous media, we c... | Reasonable Degree of Formation Pressure Maintenance in Low Permeability Reservoirs | 10.1007/s10553-020-01160-4 |
2020-07-01 | Biological effects of high fluence low-power (HFLP) lasers have been reported for some time, yet the molecular mechanisms procuring cellular responses remain obscure. A better understanding of the effects of HFLP lasers on living cells will be instrumental for the development of new experimental and therapeutic strateg... | Light-induced modulation of the mitochondrial respiratory chain activity: possibilities and limitations | 10.1007/s00018-019-03321-z |
2020-07-01 | Background Translational data analytics aims to apply data analytics principles and techniques to bring about broader societal or human impact. Translational data analytics for environmental health is an emerging discipline and the objective of this study is to describe a real-world example of this emerging discipline.... | Translational data analytics in exposure science and environmental health: a citizen science approach with high school students | 10.1186/s12940-020-00627-5 |
2020-07-01 | Flow past four side-by-side identical square cylinders arranged normal to the flow have been found to show interesting and important flow features which are very difficult to get through experiments. Lattice Boltzmann method (LBM) is used for numerical simulations of two-dimensional (2D) flow around four side-by-side a... | Fluid Dynamics of Flow Around Side-by-Side Arranged Cylinders | 10.1007/s13369-020-04603-6 |
2020-07-01 | The content of damaged 8-hydroxy-2-deoxyguanosine nitrogenous bases in the blood DNA of healthy donors and patients with epidermolysis bullosa after exposure to an alternating magnetic field of 550 ± 30 A/m in the frequency range from 3 to 60 Hz in vitro was determined using an enzyme immunoassay. The degree of oxidati... | Oxidative Damage to DNA under the Action of an Alternating Magnetic Field | 10.1134/S0006350920040247 |
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