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2020-11-01 | Abstract The structural–morphological types and localization conditions of talc occurrences in the Beloretsk district of the Western Urals talc province are discussed. The talc mineralization is represented by low-iron talcites and talc stones in the Riphean clastic–carbonate complexes of the Bashkirian Meganticlinoriu... | Structural-Morphological Types and Localization Conditions of the Apocarbonate Talc Mineralization in the Beloretsk District of the Western Urals Province | 10.1134/S1075701520060021 |
2020-11-01 | In textile and fashion industry, it is common to combine laser treatment and pigment printing processes for creating special design and aesthetic effects. Other than aesthetic effects, comfort is also a concern to the customer. This paper examines comfort properties, in terms of low stress mechanical properties, of las... | Effect of laser treatment on pigment printing on denim fabric: low stress mechanical properties | 10.1007/s10570-020-03461-7 |
2020-11-01 | The low-frequency (terahertz) dynamics of condensed phase materials provide valuable insight into numerous bulk phenomena. However, the assignment and interpretation of experimental results require computational methods due to the complex mode types that depend on weak intermolecular forces. Solid-state density functio... | Assessing the Performance of Density Functional Theory Methods on the Prediction of Low-Frequency Vibrational Spectra | 10.1007/s10762-020-00700-7 |
2020-11-01 | The trifluoroacetate metal-organic deposition (TFA-MOD) is one of the most appealing routes for the growth of high-quality YBa 2 Cu 3 O 7-δ (YBCO) coated conductors (CCs) due to its advantages of low cost and high efficiency. However, the puzzle of the inhomogeneities in microstructures and superconducting properties o... | High homogeneity 10 cm long BaTiO3-doped YBa2Cu3O7-δ films by the trifluoroacetate metal-organic deposition process | 10.1007/s10971-020-05367-z |
2020-11-01 | Abstract The results of studying the effect of microcrystalline complex alloys with alkaline earth metals (AEM) on the quality indicators of 17G1S-U pipe steel have been considered. It has been shown that the treatment of steel with these alloys reduces both the maximum score of non-metallic inclusions (NI) and the mea... | Industrial Tests of Microcrystalline Complex Alkaline Earth Metal Alloys when Casting Pipe Steel | 10.3103/S0967091220110030 |
2020-11-01 | The present study focused on the full valorization of the tomato by-product, also known as tomato pomace consisting mainly of tomato peels and tomato seeds, by recovering natural antioxidants and edible oil, and subsequently reutilizing the leftover solid residues for the production of low-cost biosorbent. The tomato p... | Towards sustainable management of tomato pomace through the recovery of valuable compounds and sequential production of low-cost biosorbent | 10.1007/s11356-020-09835-5 |
2020-11-01 | This work aimed at investigating the low-velocity impact (LVI) behavior of hybrid epoxy-based laminates reinforced with woven Kevlar and Basalt fabrics. Six types of stacking sequences including sandwich hybrid, intercalated hybrid and not hybrid were employed for fabricating the specimens. Herein, the main focus of th... | Hybrid Effects of Basalt and Kevlar Fibers on Low-velocity Impact Behavior of Epoxy-based Composites | 10.1007/s12221-020-1418-z |
2020-11-01 | The aero-engine blades are mostly thin-walled with complex structures, which are prone to flutter, deformation during processing. All these characteristics make it difficult to machine the blade qualified. In order to improve the precision and efficiency of blades machining, a self-adaptive clamp machining process meth... | A self-adaptive auxiliary fixture for deformation control in blade machining | 10.1007/s00170-020-06171-3 |
2020-11-01 | Abstract This short report substantiates the advisability of developing a two-stage model for the emergence and development of a boiling crisis. One of the stages is the violation of the stability of the two-phase wall layer, and the other is the appearance and fusion of dry spots on the heating surface. The use of a t... | On the Expediency of Developing a Two-Stage Model of Boiling Crisis of a Liquid Wetting a Heating Surface | 10.1134/S0040601520110051 |
2020-11-01 | The immune system is exposed to extremely low doses of neutrons under different circumstances, such as through exposure to cosmic rays, nuclear accidents, and neutron therapy. Peripheral blood mononuclear cells (PBMCs) are the primary immune cells that exhibit selective immune responses. Changes in the functions of the... | Effect of low-dose fast neutrons on the protein components of peripheral blood mononuclear cells of whole-body irradiated Wistar rats | 10.1007/s11356-020-10085-8 |
2020-11-01 | We develop a new multiscale model to compute effective properties such as relative permeability, contact angle and partition coefficients in low salinity enhanced oil recovery processes for two-phase flow in sandstones containing reactive surfaces of kaolinite clay. In this setting, we construct a three-scale approach ... | A New Multiscale Computational Model for Low Salinity Waterflooding in Clay Bearing Sandstones | 10.1007/s11242-020-01480-3 |
2020-11-01 | Abstract This article explores the possibility of enhancing the functionality of TKR7С-6 turbochargers by creating new friction pairs in bearing interfaces using ultrasolid ceramic coatings. According to the tests, the most efficient combination of materials for slider bearings is the friction pair including the ultras... | Modification of the Bearing Interfaces of a TKR7С-6 Turbocharger | 10.3103/S1052618820060047 |
2020-11-01 | MicroRNAs (miRNAs) have been reported to be correlated with various stress responses in soybean, but only a few miRNAs have been demonstrated to respond to low phosphorus (LP) stress. To unravel the response mechanisms of miRNAs to low-P stress, the roots of two representative soybean genotypes with different P efficie... | Genome-wide identification of low phosphorus responsive microRNAs in two soybean genotypes by high-throughput sequencing | 10.1007/s10142-020-00754-9 |
2020-11-01 | Purpose Excess nutrients pose profound aquatic environmental impacts besides well-known essential elements for cropping. The enrichment of excess nutrients in riverine systems requires more investigation for various scenarios under different culture and governance regimes in the world. A survey on sedimentary nutrients... | Spatial and temporal variability of sedimentary nutrients in relation to regional development in the urbanizing lower Chao Phraya watersheds of Thailand | 10.1007/s11368-020-02739-4 |
2020-11-01 | Occupational exposure assessment is almost exclusively accomplished with personal sampling. However, personal sampling can be burdensome and suffers from low sample sizes, resulting in inadequately characterized workplace exposures. Sensor networks offer the opportunity to measure occupational hazards with a high degre... | Estimating personal exposures from a multi-hazard sensor network | 10.1038/s41370-019-0146-1 |
2020-11-01 | An accurate numerical approach is presented for computing two-phase flows with surface tension at low-Mach regime. To develop such a model, where slight compressible effects are taken into account as well as correct thermodynamical closures, both the liquid and the gas are considered compressible and described by a pre... | An Accurate Sharp Interface Method for Two-Phase Compressible Flows at Low-Mach Regime | 10.1007/s10494-020-00125-1 |
2020-11-01 | Low molecular weight fucoidan (LMWF) extracted from Saccharina japonica exhibits many biological activities including immune regulation and inhibition of tumor angiogenesis, but little research has been done for its antioxidant effect in atherosclerosis (AS). In this study, AS modeling was successfully conducted in Apo... | Low Molecular Weight Fucoidan from Saccharina Japonica Ameliorates the Antioxidant Capacity and Reduces Plaque Areas in Aorta in Apoe-Deficient Mice with Atherosclerosis | 10.1007/s11094-020-02278-9 |
2020-11-01 | Due to the fact that modern American and European women postpone childbirth until later in life, they are more likely to face the problem of ovarian insufficiency by the time they are ready to have children. So, the ability to restore the ovarian function safely is crucially important. Our study involved 38 women 31–45... | Ovarian Rejuvenation Through Platelet-Rich Autologous Plasma (PRP)—a Chance to Have a Baby Without Donor Eggs, Improving the Life Quality of Women Suffering from Early Menopause Without Synthetic Hormonal Treatment | 10.1007/s43032-020-00266-8 |
2020-11-01 | Energy price is a key factor in reducing carbon emissions. This paper assesses the relationship between energy prices and carbon emissions from the industrial sector in China. Using panel data covering 31 industrial sectors for the period 2003 to 2015, we calculate the industrial energy price index and then estimate th... | Asymmetric effects of industrial energy prices on carbon productivity | 10.1007/s11356-020-10204-5 |
2020-11-01 | Aims We tested whether arbuscular mycorrhizal fungal (AMF) community might shift as host plant generations advance under a low phosphorus (P) soil. Methods Two greenhouse experiments were conducted using Medicago truncatula as the host plant, six AMF species, and two soil P levels. Experiment 1 assessed changes in AMF ... | Changes in the mycorrhizal fungal community in host roots over five host generations under low and high phosphorus conditions | 10.1007/s11104-020-04694-y |
2020-11-01 | Purpose The purpose of this study was to reveal whether a transanal tube (TAT) could act as an alternative to a diverting stoma (DS) after laparoscopic low anterior resection. Patients and Methods A total of 89 consecutive rectal cancer patients whose tumors were located within 15 cm from the anal verge who underwent l... | The possibility of a transanal tube as an alternative to diverting stoma in terms of preventing severe postoperative anastomotic leakage after laparoscopic low anterior resection | 10.1007/s00384-020-03624-9 |
2020-11-01 | The resonance of thermal lags of solid fuel with heat transfer oscillations in a boundary layer flow is the primary cause of low-frequency instability initiation in hybrid rocket combustion. A detailed study of two cases was conducted experimentally to investigate how the boundary layer is disturbed and leads to low-fr... | Low frequency instability and oscillating boundary layer in hybrid rocket combustion | 10.1007/s12206-020-1039-x |
2020-11-01 | Objectives We evaluated the effects of low-level laser therapy (LLLT) using an infrared laser (IRL) and a red laser (RL) on the pulp of molar teeth in rats after dental bleaching to assess inflammation, collagen fiber maturation, and tertiary dentin formation. Materials and methods Eighty Wistar rats ( Rattus norvegicu... | Influence of low-level laser therapy on inflammation, collagen fiber maturation, and tertiary dentin deposition in the pulp of bleached teeth | 10.1007/s00784-020-03258-9 |
2020-11-01 | Abstract For the first time, mineralogical, structural, crystal-chemical and isotope-geochronological data were obtained for a glauconite sample from the Lower Riphean Ust-Il’ya Formation on the Magan River (western slope of the Anabar Massif, northern Siberia). It has been established that glauconite from the lenticul... | Structural and Crystal-Chemical Features and Rb–Sr Age of Globular Glauconite in the Ust-Il’ya Formation (Lower Riphean, Anabar Uplift) | 10.1134/S0024490220060103 |
2020-11-01 | Background There is substantial interest in using networks of lower-cost air quality sensors to characterize urban population exposure to fine particulate matter mass (PM 2.5 ). However, sensor uncertainty is a concern with these monitors. Objectives (1) Quantify the uncertainty of lower-cost PM 2.5 sensors; (2) Use th... | Using a network of lower-cost monitors to identify the influence of modifiable factors driving spatial patterns in fine particulate matter concentrations in an urban environment | 10.1038/s41370-020-0255-x |
2020-11-01 | In the present paper, a method for choosing the parameters of a wing-surface waviness intended for use on small aircraft is introduced. We propose choosing the waviness geometry based on the parameters of the boundary layer for the given regime of the flow around the classical wing installed at zero angle of attack, α ... | Formation of local separation zones on the wings with a rigid and varioform wavy surface | 10.1134/S0869864320060074 |
2020-11-01 | The experiment was conducted to evaluate the effect of breed, diet, and level of feed supplementation on growth performance, feed conversion ratio, and survivability of Sasso and Kuroiler chicken. The study was conducted in two separate phases, i.e., the starter phase (0–6 weeks of age) and grower phase (6–20 weeks of ... | Evaluation of growth performance of Sasso and Kuroiler chickens fed three diets at varying levels of supplementation under semi-intensive system of production in Tanzania | 10.1007/s11250-020-02363-x |
2020-11-01 | Abstract In 2016 and 2017, from April to July, bird individual nesting home ranges were regularly mapped along the permanent census route (2.8 km) in the low-mountain forests dominated by pine and birch. For each bird species, the nesting densities and average sizes of the bird individual nesting home range were estima... | Ecological Population Status of the Most Common Bird Species in Northern Altai Low-Mountain Forests and the Principal Difference in Avifauna Status in Altai and Baikal Regions | 10.1134/S1995425520060062 |
2020-10-29 | Background The extraordinarily resistant bacterium Deinococcus radiodurans withstands harsh environmental conditions present in outer space. Deinococcus radiodurans was exposed for 1 year outside the International Space Station within Tanpopo orbital mission to investigate microbial survival and space travel. In additi... | Molecular repertoire of Deinococcus radiodurans after 1 year of exposure outside the International Space Station within the Tanpopo mission | 10.1186/s40168-020-00927-5 |
2020-10-23 | Background Thermal control after birth is an essential part of neonatal care. However, the relationship between neonatal temperature at and after admission is unknown. This study aimed to evaluate the change between neonatal temperature at admission and at day 1, and its impact on mortality. Methods Retrospective obser... | Impact of temperature change from admission to day one on neonatal mortality in a low-resource setting | 10.1186/s12884-020-03343-7 |
2020-10-23 | Background External fixation is a mainstream limb reconstruction technique, most often used after a traumatic injury. Due to the high rates of trauma in developing countries, external fixation devices are often utilized for immediate fracture stabilization and soft tissue repair. Proper external fixation treatment too ... | Low cost 3D printed clamps for external fixator for developing countries: a biomechanical study | 10.1186/s41205-020-00084-3 |
2020-10-23 | The focus of this study was the experimental determination of surfactant adsorption during low salinity water injection combined with surfactant flooding (LSW-SF) into an oil reservoir and development of an analytical model to predict this adsorption. The experimental model used was surfactant adsorption on silica and ... | Modeling of surfactant adsorption on coated quartz crystal surfaces during surfactant flooding process | 10.1007/s42452-020-03714-x |
2020-10-23 | Typical green roof systems are used to improve downstream water quality and reduce long-term total runoff. However, they perform poorly at peak discharge reduction during large design storm events. This performance can be significantly improved by the addition of storage a layer (blue roof) underneath a green roof syst... | A simple method for sizing modular green–blue roof systems for design storm peak discharge reduction | 10.1007/s42452-020-03725-8 |
2020-10-22 | Background The purpose of this study was to observe the effect of hematoporphyrin monomethyl ether (HMME)-mediated low-frequency and low-intensity ultrasound on mature and stable Staphylococcus aureus ( S. aureus ) biofilms under different ultrasound parameters. Methods The biofilm was formed after 48-h culture with st... | The penetration effect of HMME-mediated low-frequency and low-intensity ultrasound against the Staphylococcus aureus bacterial biofilm | 10.1186/s40001-020-00452-z |
2020-10-22 | Background Simulation based learning (SBL) is a technique where teachers recreate “real life” clinical experiences for health care teams for purposes of gaining clinical skills in a safe environment. There is evidence that SBL is superior to the traditional clinical teaching methods for acquisition of clinical skills. ... | Stakeholder perceptions about the establishment of medical simulation-based learning at a university in a low resource setting: a qualitative study in Uganda | 10.1186/s12909-020-02301-3 |
2020-10-21 | Nitrate contamination has gain significant research interest, since presence of nitrate in large quantity in drinking water, often causes health disorders. In present day situation, nitrate removal is important aspects of water treatment process. Prevailing process, conditional influence and various approaches play imp... | Low cost bench scale community level water treatment system and adsorption method for removal of nitrate from groundwater | 10.1007/s40899-020-00465-w |
2020-10-20 | Background Very low birth weight (VLBW) infant thermal instability upon neonatal intensive care unit admission has been associated with respiratory morbidity; however, the association between ongoing thermal instability and respiratory morbidity remains unclear. Methods A longitudinal data analysis was conducted on 12 ... | Body temperature instability and respiratory morbidity in the very low birth weight infant: a multiple case, intensive longitudinal study | 10.1186/s12887-020-02351-y |
2020-10-19 | Background Direct seeding is an efficient cultivation technique in rice. However, poor low temperature germinability (LTG) of modern rice cultivars limits its application. Identifying the genes associated with LTG and performing molecular breeding is the fundamental way to address this issue. However, few LTG QTLs have... | The Candidate Genes Underlying a Stably Expressed QTL for Low Temperature Germinability in Rice (Oryza sativa L.) | 10.1186/s12284-020-00434-z |
2020-10-19 | Background The optimal time-response window for photobiomodulation therapy (PBMT) using low-level laser therapy (LLLT) and/or light emitting diodes therapy (LEDT) combined with static magnetic fields (sMF) before physical activity still was not fully investigated. The aim of the present study was to investigate the bet... | What is the optimal time-response window for the use of photobiomodulation therapy combined with static magnetic field (PBMT-sMF) for the improvement of exercise performance and recovery, and for how long the effects last? A randomized, triple-blinded, placebo-controlled trial | 10.1186/s13102-020-00214-8 |
2020-10-17 | The measurement of physicochemical variables to infer water quality is important since they help determine the distribution and abundance of aquatic organisms or pollution-related problems. Recently, the development of low-cost probes is a suitable alternative for continuous monitoring of these variables rather than th... | Design and implementation of a low-cost multiparameter probe to evaluate the temporal variations of water quality conditions on an estuarine lagoon system | 10.1007/s10661-020-08677-5 |
2020-10-16 | Background Schizochytrium species are known for their abundant production of docosahexaenoic acid (DHA). Low temperatures can promote the biosynthesis of polyunsaturated fatty acids (PUFAs) in many species. This study investigates low-temperature effects on DHA biosynthesis in Schizochytrium sp. TIO01 and its underlyin... | Low-temperature effects on docosahexaenoic acid biosynthesis in Schizochytrium sp. TIO01 and its proposed underlying mechanism | 10.1186/s13068-020-01811-y |
2020-10-16 | Background RNA sequencing is a powerful approach to quantify the genome-wide distribution of mRNA molecules in a population to gain deeper understanding of cellular functions and phenotypes. However, unlike eukaryotic cells, mRNA sequencing of bacterial samples is more challenging due to the absence of a poly-A tail th... | Efficient and cost-effective bacterial mRNA sequencing from low input samples through ribosomal RNA depletion | 10.1186/s12864-020-07134-4 |
2020-10-15 | Realizing the efficiency benefits of low viscosity lubricants requires novel strategies to avoid failures resulting from increased boundary contact. Zirconium dioxide (ZrO 2 ) nanoparticles (NPs) form protective tribofilms through tribosintering at lubricated contacts in pure hydrocarbon base oils, suggesting they hold... | Cooperativity Between Zirconium Dioxide Nanoparticles and Extreme Pressure Additives in Forming Protective Tribofilms: Toward Enabling Low Viscosity Lubricants | 10.1007/s11249-020-01346-1 |
2020-10-15 | Background In the current study, our specific aim was to characterize the Klotho protein and expression levels in the hippocampus and prefrontal cortex of old rats treated with different diets (high-fat, high-protein, low-calorie, high-protein and low-calorie). Methods Rats were treated with high-fat, high-protein, low... | High-protein and low-calorie diets improved the anti-aging Klotho protein in the rats’ brain: the toxic role of high-fat diet | 10.1186/s12986-020-00508-1 |
2020-10-14 | Background The health impact of COVID-19 may differ in African settings as compared to countries in Europe or China due to demographic, epidemiological, environmental and socio-economic factors. We evaluated strategies to reduce SARS-CoV-2 burden in African countries, so as to support decisions that balance minimising ... | Response strategies for COVID-19 epidemics in African settings: a mathematical modelling study | 10.1186/s12916-020-01789-2 |
2020-10-13 | We examine the renormalized free energy of the free Dirac fermion and the free scalar on a (2+1)-dimensional geometry ℝ × Σ, with Σ having spherical topology and prescribed area. Using heat kernel methods, we perturbatively compute this energy when Σ is a small deformation of the round sphere, finding that at any tempe... | Does the round sphere maximize the free energy of (2+1)-dimensional QFTs? | 10.1007/JHEP10(2020)078 |
2020-10-12 | Purpose The primary aim of this study is to assess, in an animal model, whether biostimulation of osteoporotic bone with low-level laser therapy improves the osseointegration of dental implants. Material and methods Twenty-two female rabbits were randomly divided into two groups: sham-ovariectomy and bilateral-ovariect... | Effect of low-level laser therapy on osseointegration of titanium dental implants in ovariectomized rabbits: biomechanics and micro-CT analysis | 10.1186/s40729-020-00257-z |
2020-10-12 | Background Placental malaria (PM) is a major public health problem associated with adverse pregnancy outcomes such as low birth weight (LBW), preterm delivery and maternal anemia. The present study is aimed to determine the prevalence of placental malaria among asymptomatic pregnant women in Wolkite health center, Gura... | Prevalence of placental malaria among asymptomatic pregnant women in Wolkite health center, Gurage zone, Southern Ethiopia | 10.1186/s40794-020-00121-3 |
2020-10-09 | U–Pb petrochronology of deep crustal xenoliths and outcrops across northeastern Tanzania track the thermal evolution of the Mozambique Belt and Tanzanian Craton following the Neoproterozoic East African Orogeny (EAO) and subsequent Neogene rifting. At the craton margin, the upper–middle crust record thermal quiescence ... | Four-dimensional thermal evolution of the East African Orogen: accessory phase petrochronology of crustal profiles through the Tanzanian Craton and Mozambique Belt, northeastern Tanzania | 10.1007/s00410-020-01737-6 |
2020-10-09 | Major and trace element concentrations of thirteen limestone samples from zone XX of the Tlayúa Quarry Fossillagerstätte were analysed with the aim of elucidating the source of rare earth elements plus yttrium (REE+Y) as well as some palaeoenvironmental conditions attributable to them. The concentrations of cortex-deri... | REE+Y patterns and positive europium anomalies recorded in limestones from zone XX of the Tlayúa Quarry Konservat-Lagerstätte (Tlayúa Formation, Lower Cretaceous; Tepexi de Rodríguez, Mexico) | 10.1007/s12517-020-06075-2 |
2020-10-08 | Main conclusion Early cytokinin activity and late abscisic acid dynamics during wheat kernel development correspond to cultivars with higher yield potential. Cytokinins represent prime targets for marker development for wheat breeding programs. Abstract Two major phytohormone groups, abscisic acid (ABA) and cytokinins ... | Cytokinin activity during early kernel development corresponds positively with yield potential and later stage ABA accumulation in field-grown wheat (Triticum aestivum L.) | 10.1007/s00425-020-03483-2 |
2020-10-07 | In this work, a tunneling field-effect transistor (TFET) in the structure that can maximize the electrostatic effects in determining its electrical performances is optimally designed and characterized. The featured device structure includes gate-all-around (GAA) channel and dual gates (DuGs) identified as control gate ... | More physical understanding of current characteristics of tunneling field-effect transistor leveraged by gate positions and properties through dual-gate and gate-all-around structuring | 10.1007/s00339-020-04015-1 |
2020-10-07 | The elastic behavior of low albite is investigated ab initio under hydrostatic pressure up to 16 GPa. Our calculations complement and extend previous studies confirming a highly anisotropic character of the feldspar cell compression and, more importantly, revealing a clear change of all structure deformation trends aro... | Ab initio compressibility of metastable low albite: revealing a lambda-type singularity at pressures of the Earth’s upper mantle | 10.1007/s00269-020-01110-w |
2020-10-07 | Background Metabolic inflammation is an essential event in obesity-induced diabetes and insulin resistance. In obesity, an increasing number of macrophages recruited into visceral adipose tissues undergo significant M 1 -like polarization, secreting variable amounts of pro-inflammatory cytokines and causing insulin res... | Piperine ameliorates insulin resistance via inhibiting metabolic inflammation in monosodium glutamate-treated obese mice | 10.1186/s12902-020-00617-1 |
2020-10-05 | Background Burundi has one of the poorest child health outcomes in the world. With an acute malnutrition rate of 5% and a chronic malnutrition rate of 56%, under five death is 78 per 1000 live births and 47 children for every 1000 children will live until their first birthday. In response to this grim statistics, Villa... | Infant and child health status ahead of implementation of an integrated intervention to improve nutrition and survival: a cross-sectional baseline assessment | 10.1186/s40795-020-00372-5 |
2020-10-03 | Digital light processing (DLP), a subclass of vat photopolymerization, is one of the most efficient additive manufacturing (AM) techniques that can be used to print complex objects with high precision at a greater speed than those of the other AM processes. However, printed objects are typically brittle because network... | Photocurable elastomers with tunable mechanical properties for 3D digital light processing printing | 10.1007/s10965-020-02289-w |
2020-10-01 | In order to reduce the sintering temperature of ceramics, the effects of binary composite sintering aids, Li 2 CO 3 and CuO, on the sintering temperature and properties of 0.7BiFeO 3 -0.3BaTiO 3 -0.0035MnCO 3 + 0.002Li 2 CO 3 + x CuO (BF-BT-LC + x CuO) ceramics were studied by traditional solid-state sintering. The... | Effects of Li2CO3 and CuO as Composite Sintering Aids on the Structure, Piezoelectric Properties, and Temperature Stability of BiFeO3-BaTiO3 Ceramics | 10.1007/s11664-020-08365-7 |
2020-10-01 | Low-temperature sintering of gahnite (ZnAl 2 O 4 ) ceramic, which has the potential to exhibit higher thermal conductivity than alumina but sinters densely at a moderate temperature of approximately 1500°C, has been investigated. When adding only 5 wt.% Cu-Nb-O additive, the sintering temperature was lowered significan... | Low-Temperature Sintering of Gahnite Ceramic Using Cu-Nb-O Additive and Evaluation of Dielectric and Thermal Properties | 10.1007/s11664-020-08346-w |
2020-10-01 | Abstract The structure and mechanical properties of 22K steel are studied during uniaxial tensile tests in the temperature range from room temperature to 1200°C. The temperatures above which the strength properties begin to decrease are determined. In the temperature range from room temperature to 950°C, austenite grai... | Effect of High Temperatures on the Mechanical Properties of Grade 22K Steel | 10.1134/S0036029520100195 |
2020-10-01 | In the past few decades, low-temperature metals such as SUS304L, nickel alloys, and high-manganese steels have been widely used for liquefied natural gas (LNG) storage tanks to satisfy the structural integrity requirements at low temperature. Many researchers have conducted studies to characterize the fatigue and fract... | Investigation of fatigue and fracture characteristics for low-temperature metals considering the effects of various alloying components | 10.1007/s40194-020-00947-7 |
2020-10-01 | Today’s industrial technology offers to optimize and reutilize the resources available in terms of scum that remains after hot rolling in steel rerolling mills in Rajasthan, India. Vast reserves of low-grade coal exist and tons of mill scale are produced everyday after hot rolling in steel rerolling mills in Rajasthan,... | Synthesis and Characterization of Metallic Iron Reduced from Low-grade Coal in Rajasthan | 10.1007/s42461-020-00281-y |
2020-10-01 | The hot deformation behavior of an ultralow-carbon microalloyed steel was investigated using an MMS-200 thermal simulation test machine in a temperature range of 1 073–1 373 K and strain rate range of 0.01–10 s −1 . The results show that the flow stress decreases with increasing deformation temperature or decreasing st... | Constitutive Modeling and Dynamic Recrystallization Mechanisms of an Ultralow-carbon Microalloyed Steel During Hot Compression Tests | 10.1007/s11595-020-2341-2 |
2020-10-01 | The present research investigated the effect of annealing temperature on surface gradient fine microstructure and wear resistance of low-carbon steel. The results depicted that the optimized annealing temperature from 300 °C to 400 °C can facilitate the formation of a stable fine microstructure. The fine grain size is ... | Effect of Annealing Temperature on Surface Gradient Fine Microstructure and Wear Resistance of Low-Carbon Steel | 10.1007/s11665-020-05129-6 |
2020-10-01 | This study aimed to investigate the microstructure and mechanical properties of Ti x ZrVNb ( x = 1, 1.5, 2) refractory high-entropy alloys at room and elevated temperatures. The TiZrVNb alloy consisted of the body-centered cubic (bcc) matrix with a small amount of V 2 Zr phase. The Ti 1.5 ZrVNb and Ti 2 ZrVNb alloys ex... | Effect of Ti content on microstructure and properties of TixZrVNb refractory high-entropy alloys | 10.1007/s12613-020-2040-1 |
2020-10-01 | Traditional condensing air-conditioning systems consume large amounts of energy in hot and humid areas, and it is difficult to achieve simultaneous control of temperature and humidity. A combined absorption refrigeration (AR) and liquid desiccant dehumidification (LDD) air-conditioning system based on cascade utilizati... | Performance Analysis of a Combined Absorption Refrigeration-Liquid Desiccant Dehumidification THIC System Driven by Low-Grade Heat Source | 10.1007/s11630-020-1363-6 |
2020-10-01 | A new method of high-gravity combustion synthesis (HGCS) followed by post-treatment (PT) is reported for preparing high-performance high-entropy alloys (HEAs), Cr 0.9 FeNi 2.5 V 0.2 Al 0.5 alloy, whereby cheap thermite powder is used as the raw material. In this process, the HEA melt and the ceramic melt are rapidly fo... | A new method of preparing high-performance high-entropy alloys through high-gravity combustion synthesis | 10.1007/s12613-020-2028-x |
2020-10-01 | Low-permittivity SrMgSi 2 O 6 microwave dielectric ceramics were synthesized via a conventional solid-state reaction method. Further, their sintering behavior as well as structural and microwave dielectric properties were studied. The x-ray diffraction patterns of the SrMgSi 2 O 6 and Sr 2 MgSi 2 O 7 ceramics were comp... | Sintering Behavior and Microwave Dielectric Properties of Low-Permittivity SrMgSi2O6 Ceramic | 10.1007/s11664-020-08327-z |
2020-10-01 | A particular YSZ feedstock for very low-pressure plasma spraying (VLPPS) has been designed which can be automatically divided into less than 5 μm YSZ molten particles in the long plasma jet. Fully molten particles were deposited on the substrate at different deposition distances of 250, 350 and 450 mm, respectively. Th... | Study on Deposition Behavior of Less Than 5 μm YSZ Particles in VLPPS | 10.1007/s11666-020-01087-6 |
2020-10-01 | Ion mobility spectrometers (IMS) are able to detect ppt V -level concentrations of substances in gasses and in liquids within seconds. Due to the continuous increase in analytical performance and reduction of the instrument size, IMS are established nowadays in a variety of analytical field applications. In order to re... | Novel ion drift tube for high-performance ion mobility spectrometers based on a composite material | 10.1007/s12127-020-00265-0 |
2020-10-01 | Vanadium oxide supported on TiO 2 (P25) catalysts were synthesized via atomic layer deposition (ALD) of vanadyl acetylacetonate (VO(acac) 2 ). Comprehensive investigations were performed to evaluate the ALD temperature window and the saturation deposition period of VO(acac) 2 , which were found to be 140–210 °C and 120... | Titania-Supported Vanadium Oxide Synthesis by Atomic Layer Deposition and Its Application for Low-Temperature Oxidative Dehydrogenation of Propane | 10.1007/s10562-020-03189-w |
2020-10-01 | OEGylated polypeptide bearing triethylene glycol monomethylether (OEG 3 ) and poly(ethylene glycol) methyl ether 350 (OEG 7 ) were first prepared by copper-mediated 1,3-dipolar cycloaddition. 1 H NMR, FTIR, and GPC results indicated the successful conjugation of oligo(ethylene glycol) (OEG) pendants with high grafting ... | Preparation and properties of thermo- and pH-responsive polypeptide bearing OEG and aldehyde pendants | 10.1007/s00396-020-04712-6 |
2020-10-01 | Simultaneous thermal analysis (TG–DTA) of low-rank coals from different annual periods (2015 and 2018) which originate from Kolubara and Nikola Tesla A (TENT A) coal-fired power plants was studied to identify their combustion characteristics and self-ignition risks. In order to investigate kinetics of thermo-oxidative ... | Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization | 10.1007/s10973-020-09288-5 |
2020-10-01 | In this paper, for developing the excellent composition ceramics for piezoelectric actuator application, the (1 − x)[(Na,K)(Nb,Sb)O 3 ]–(Bi,Na)ZrO 3 –xBaZrO 3 ceramics were fabricated according to BaZrO 3 substitution and the their physical characteristics were analyzed. An average grain size of the ceramics was slowly... | Physical Characteristics of (1 − x)[(Na,K)(Nb,Sb)O3]–(Bi,Na)ZrO3–xBaZrO3 Ceramics for Piezoelectric Actuator | 10.1007/s42341-020-00225-9 |
2020-10-01 | Abstract The thermal stability of the blends based on polylactide and low-density polyethylene of various compositions is studied. A decrease in the degradation temperature is observed with an increase in the polylactide content in samples (from 414°C for 100% polyethylene to 364°C for 100% polylactide). The influence ... | Thermal and Thermooxidative Degradation of Blends Based on Polylactide and Polyethylene | 10.1134/S0036029520100213 |
2020-10-01 | The output power of the photovoltaic system is heavily dependent on the low voltage (LV) DC cables which are exposed to multiple stresses such as climatic, mechanical, electrical, and thermal stress, hence makes them more exposed to aging as compared to other components in the system. Accordingly, it is essential to mo... | Condition Assessment of Low Voltage Photovoltaic DC Cables under Thermal Stress Using Non-Destructive Electrical Techniques | 10.1007/s42341-020-00201-3 |
2020-10-01 | The 3-2-1 constraint principle has been widely applied as the boundary conditions for the finite element method (FEM) to simulate machining deformation of aerospace structure components. However, this principle is inconsistent with the actual contact surface between workpieces and worktables because it provides only th... | Low-stiffness spring element constraint boundary condition method for machining deformation simulation | 10.1007/s12206-020-0905-x |
2020-10-01 | Numerous equations have been proposed to describe the behavior of metal sheets under uniaxial tensile loading in the post-critical region. Here, the evolution of the cross-section is unknown and it is unclear which equation is most appropriate for which material. In this study, the evolution of the actual specimen cros... | Determination of post-necking stress-strain relationship for zirconium low-oxidation based on actual cross-section measurements by DIC | 10.1007/s12206-020-0913-x |
2020-10-01 | Anemometric method is the most accurate and reliable technique for air velocity measurement. In present work, a voltage follower based circuit is proposed, and a low-cost sensor (tungsten filament) is chosen to perform Constant Voltage Anemometer (CVA) operation for air velocity measurement. For performing the real-tim... | Realization of Constant Voltage Anemometer Using an Alternative Signal Conditioning Circuit | 10.1007/s40799-020-00379-4 |
2020-10-01 | In this study, waste cotton yarn was used for the removal of Pb (II), Cd (II), Cr (III), and As (V) from aqueous solution. Adsorption of heavy metal ions was tested from single ion solutions, while competitive studies were performed using two- and four-ion mixtures. In order to change the structure of the material, cot... | Application of waste cotton yarn as adsorbent of heavy metal ions from single and mixed solutions | 10.1007/s11356-020-09811-z |
2020-10-01 | Abstract Coral-like ZnO nanostructures were successfully grown onto heat-resistant flexible substrates by the oxidation of Zn thin films. At a relatively low temperature (100°C), Zn thin film was oxidized using a horizontal furnace under the flow of water vapour. The obtained results revealed well-defined aggregates of... | Growth of ZnO Nanostructures by Wet Oxidation of Zn Thin Film Deposited on Heat-Resistant Flexible Substrates at Low Temperature | 10.1134/S1063782620100103 |
2020-10-01 | Background About 10 years ago, super-high energy Charpy specimens at the National Institute of Standards and Technology were removed from inventory due to unacceptable variability in absorbed energy, leading to the advent of new methods and materials to reduce the variability and maintain the prescribed energy levels. ... | Effect of Tempering on the Ductile-to-Brittle Transitional Behavior of Ni-Cr-Mo Low-Alloy Steel | 10.1007/s11340-020-00630-4 |
2020-10-01 | Abstract — The economic feasibility of substituting small-capacity coal-fired boiler houses with geothermal heat-pump units in the central ecological zone of the Baikal natural area is analyzed. Three versions of a space-heating system equipped with heat-pump units are considered depending on the source of low-grade he... | Feasibility Study of Using Geothermal Heat-Pump Units for Substituting Small-Capacity Coal-Fired Boiler Houses (Taking the Baikal Natural Area as an Example) | 10.1134/S0040601520100055 |
2020-10-01 | Potato cultivars are propagated by tubers which are sensitive to damage by freezing. Potato has about 100 related wild Solanum species growing naturally in the Americas. When tubers of a spectrum of these species were slowly cooled, most were killed at a few degrees below 0 C. Only tubers of Solanum jamesii , native to... | Survival of Solanum jamesii Tubers at Freezing Temperatures | 10.1007/s12230-020-09797-x |
2020-10-01 | The so-called low-density steels have generated a lot of interests with their high specific strength and ductility due to the addition of the light element Al. In order to accelerate the low-density steel design, a thermodynamic database has been developed within the present author group. Two Al-containing systems, i.e... | Thermodynamic modeling of Cr–Al–C and Ni–Al–C systems for low-density steels | 10.1007/s42243-020-00415-y |
2020-10-01 | Abstract Improvement of electrical insulating and adhesion characteristics of epoxydian resins cured with aminoimidazoline curing agents is considered. It is determined that necessary characteristics of fabricability (low viscosity and time of curing) and adhesion and cohesion strength to various metal substrates (stee... | Fast-Setting Low-Viscous Epoxy Compositions for Impregnation and Adhesion of Electrotechnical Products | 10.1134/S1995421220040206 |
2020-10-01 | In the present investigation, an attempt has been made to investigate the replacement compatibility of conventional austenitic stainless steel (316L) with low-Ni austenitic stainless steel (201) by employing their dissimilar welding using gas tungsten arc welding technique with varying heat input. The effects of heat i... | Effect of Heat Input on the Microstructural, Mechanical, and Corrosion Properties of Dissimilar Weldment of Conventional Austenitic Stainless Steel and Low-Nickel Stainless Steel | 10.1007/s13632-020-00681-y |
2020-10-01 | Aims Plant growth in the Arctic is often nutrient limited due to temperature constraints on decomposition and low atmospheric input of nitrogen (N). Local hotspots of nutrient enrichment found in up to 4000-year-old archaeological deposits can be used to explore the recycling and long-term retention of nutrients in arc... | Nitrogen isotopes reveal high N retention in plants and soil of old Norse and Inuit deposits along a wet-dry arctic fjord transect in Greenland | 10.1007/s11104-020-04683-1 |
2020-10-01 | Polymer-based EOR methods in low-permeability reservoirs face injectivity issues and increased fracturing due to near wellbore plugging, as well as high-pressure gradients in these reservoirs. Polymer may cause pore blockage and undergo shear degradation and even oxidative degradation at high temperatures in the presen... | Low-tension gas process in high-salinity and low-permeability reservoirs | 10.1007/s12182-020-00455-9 |
2020-10-01 | Low-cycle fatigue (LCF) behaviors of a second-generation nickel-based single-crystal superalloys with [001] orientation at 760 °C have been investigated. Different strain amplitudes were introduced to investigate the creep-fatigue effects. The LCF life of none tensile holding (NTH) was higher than that of the 60-s tens... | Low-Cycle Fatigue and Creep-Fatigue Behaviors of a Second-Generation Nickel-Based Single-Crystal Superalloy at 760 °C | 10.1007/s40195-020-01056-6 |
2020-10-01 | In this lecture an overview of applications of incoherent Thomson scattering (TS) as well as collective Thomson scattering (CTS) will be given. These are the most accurate methods for measuring the electron and ion properties, because the method is direct and non-intrusive. A CTS system based on the fundamental wavelen... | Incoherent and Collective Thomson Scattering for the Determination of Electron and Ion Properties in Low-Temperature Plasma | 10.1007/s10894-020-00262-5 |
2020-10-01 | Abstract Anionic dyes are often used for conventional cotton dyeing. This process, however, has a moderate affinity and it is estimated that less than 70% of the dye interacts with the cotton fiber. Cationization of cellulose is a chemical treatment that modifies the cellulose molecule, making it strongly cationic. Thi... | Cationization of cotton fiber: an integrated view of cationic agents, processes variables, properties, market and future prospects | 10.1007/s10570-020-03361-w |
2020-10-01 | Boron nitride (BN) multi-layers are proposed as dielectric material for both horizontal and vertical graphene nanoribbon interconnects. The layer number dependence of the out-of-plane dielectric constant of BN multi-layers is utilized to simultaneously reduce the interlayer dielectric thickness and the crosstalk delay ... | All-2D-Materials-Based Interconnects | 10.1007/s11664-020-08289-2 |
2020-10-01 | We present a sensitive voltage amplifier suited for measurements of source impedances in the k $$\Omega$$ Ω range at dilution refrigerator temperatures. The circuit is based on a commercial dc SQUID, an impedance matching transformer, and it works on the principle of negative feedback. At 10 mK, the amplifier contribut... | A SQUID-Based Picovoltmeter for Quantum Resistors | 10.1007/s10909-020-02388-4 |
2020-10-01 | As a matrix resin of silica/epoxy hybrid encapsulation material with high heat resistance and low coefficient of thermal expansion, a tri-functional triglycidyl p-aminophenol (TGPAP) epoxy was successfully synthesized with the desired chemical structure by reacting epichlorohydrin with p-aminophenol using sodium hydrox... | Silica/Epoxy Hybrid Encapsulation with High Heat-Resistance and Low Coefficient of Thermal Expansion | 10.1007/s13233-020-8135-8 |
2020-10-01 | The development of ball grid array (BGA) packages, such as the chip scale package, wafer level package and package on package, has focused on creating electronics packages that are smaller, thinner, higher-performance and capable of higher functionality, among other desirable traits. Among the interconnection materials... | Mechanical Properties of Cu-Core Solder Balls with ENEPIG Surface Finish | 10.1007/s11664-020-08338-w |
2020-10-01 | The paper focuses on minor metals and coupled elements and aspires to understand individual incidents of imbalance on the mineral markets during the last 100 years and gain insight into the acting dynamics—those dynamics are commodity-specific but remain largely unchanged in their nature to date—and to identify the fac... | Volatility drivers on the metal market and exposure of producing countries | 10.1007/s13563-019-00200-8 |
2020-10-01 | The Nationally Determined Contributions (NDCs) to the Paris Agreement (PA) submitted so far do not put the world on track to meet the targets of the Agreement and by 2020 countries should ratchet up ambition in the new round of NDCs. Brazil’s NDC to the PA received mixed reviews and has been rated as “medium” ambition.... | Brazil’s emission trajectories in a well-below 2 °C world: the role of disruptive technologies versus land-based mitigation in an already low-emission energy system | 10.1007/s10584-020-02856-6 |
2020-10-01 | To valorize starchy waste from rice noodle factory, bioconversion of gelatinized starchy waste (GSW) to value-added product as L(+)-lactic acid, the monomer for polylactate synthesis, was investigated using amylolytic lactic acid bacterium, Enterococcus faecium K-1. Screening for appropriate nitrogen source to replace ... | Utilizing Gelatinized Starchy Waste from Rice Noodle Factory as Substrate for L(+)-Lactic Acid Production by Amylolytic Lactic Acid Bacterium Enterococcus faecium K-1 | 10.1007/s12010-020-03314-w |
2020-10-01 | The Schrödinger equation for a system of two mobile spinless nuclei with $$\mathcal{Z}=2$$ Z = 2 and four electrons ( $$^4$$ 4 He $$_2$$ 2 -dimer) has been solved with exact diagonalization approach. It is found that the ground state of the system ( $$\sim -~4.2$$ ∼ - 4.2 a.u.) is higher than the energy of two separat... | Interatomic Interaction and Structural Ordering in He II Phase | 10.1007/s10909-019-02303-6 |
2020-10-01 | Abstract — The modern state in design, calculation, and operation of heaters used in the steam-turbine regeneration systems in Russia and abroad is reviewed and analyzed. The first part of the article gives a list of companies producing steam-turbine feedwater heaters and the market shares occupied by the countries pro... | State of the Art and Trends in the Design and Operation of High- and Low-Pressure Heaters for Steam Turbines at Thermal and Nuclear Power Plants in Russia and Abroad: Part 1. Heater Types and Designs | 10.1134/S004060152010002X |
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