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2021-11-01 | Sodium ion batteries (SIBs) are alternatives to lithium ion batteries (LIBs), and offer some significant benefits such as cost reduction and a lower environmental impact; however, to compete with LIBs, further research is required to improve the performance of SIBs. In this study, an orthorhombic Na super ionic conduct... | Low-temperature synthesis of Fe2(MoO4)3nanosheets: A cathode for sodium ion batteries with kinetics enhancement | 10.1007/s12274-021-3323-1 |
2021-11-01 | This work is focused on optimizing the properties of encapsulant for low-concentration photovoltaic (LCPV) modules leading to improved electrical power and module life. Thermal conductivity (TC), long-term shear modulus ( G ∞ ) and coefficient of thermal expansion (CTE) of backside encapsulant are optimized using finit... | Simulation Led Performance Evaluation and Design of Polymer Composite for Encapsulation of Low-Concentration Photovoltaic Modules | 10.1007/s11665-021-05999-4 |
2021-11-01 | It is known that the freezing of the road brings high risks to the traffic in winter. However, Traditional deicing technology has low deicing efficiency and severe damage to the road surface. Therefore, the new develop pavement conductive wearing surface with graphite heating film (PCWSG) could be one option to solve t... | Pavement conductive wearing surface with graphite heating film de-icing potential and performance experimental study | 10.1007/s42947-020-0263-1 |
2021-11-01 | An analytical review of the problems and advantages of using low-basicity cements is given. In particular, the issues of reducing energy and raw material specific costs in the production of low-basicity cements, replacing mineral raw materials with man-made raw materials in the production cycle, as well as environmenta... | Low-Basicity Cement, Problems and Advantages of its Utilization | 10.1007/s11148-021-00610-8 |
2021-11-01 | Abstract Thin dust from copper smelting production is a valuable raw material for the extraction of heavy nonferrous, noble, and rare metals. One feature of dusts is the high content of arsenic in them, which must be removed from the technological cycle in the form of a product suitable for safe storage. The combined t... | Extraction of Nonferrous Metals and Arsenic from Thin Dusts of Copper Fuel Production by Combined Technology | 10.3103/S1067821221060146 |
2021-11-01 | Abstract This article provides an analysis of improving the maintainability, durability, and efficiency of using road-building machines due to the use of new technologies in the creation and repair work using new polymer composite materials that can withstand the effects of low temperatures. | Prospects of Application of Glue-Riveted Technology in the Creation and Repair of Road-Building Machines under Conditions of Sharp Thermal Fluctuations and Low Temperatures | 10.3103/S1052618821050046 |
2021-11-01 | Solar water heating is one of the most efficient solar technologies in the domestic sector. The most important component of the solar thermal systems is the solar collector, which converts solar radiation to useful thermal energy. There are many types of solar collectors, which are categorized based on the operating te... | Effect of design and operating parameters on thermal performance of low-temperature direct absorption solar collectors: a review | 10.1007/s10973-020-10043-z |
2021-11-01 | Probable mechanisms for low-temperature insertion bonding were discussed. Graphical abstract | Low-Temperature Insertion Bonding using Electroless Cu-Co-P Micro-Cones Array with Controllable Morphology | 10.1007/s13391-021-00302-y |
2021-11-01 | Abstract Waste polyethylene terephthalate (PET) beverage containers have been carbonized in a nitrogen stream and chemically treated to obtain activated carbon. The potential sorbent has been physico-chemically characterized and tested for use in the solidification of liquid radioactive waste (LRW). For this purpose, w... | Carbon obtained from waste polyethylene terephthalate (PET) containers as potential sorbent of radionuclides from the contaminated aqueous solutions | 10.1007/s13762-020-03102-3 |
2021-11-01 | One of the main problems limiting further growth of the production of parts by the hot forging of porous preforms (HFPP) is that the materials are prone to brittle fracture due to the poor quality of interparticle jointing formed during hot deformation and the presence of impurities in the initial powders. We study an ... | Formation of Structure and Properties of Hot-Deformed Powder Steels Microalloyed with Sodium and Calcium in the Process of Thermal and Thermomechanical Treatment | 10.3103/S1067821221060080 |
2021-11-01 | Abstract Ni x Mn 3−x O 4 and Ni x Mn 3−x O 4 /T (T represents tourmaline) catalysts with a double-layer hollow structure were prepared by a rigid template method for low-temperature selective catalytic reduction of NO x with NH 3 (NH 3 -SCR). The catalytic activity and SO 2 tolerance performance of Ni x Mn 3−x O 4 cata... | Effect of Tourmaline Addition on the Catalytic Performance and SO2 Resistance of NixMn3−xO4 Catalyst for NH3-SCR Reaction at Low Temperature | 10.1007/s10562-021-03585-w |
2021-11-01 | Properties are provided for submicron aluminum oxide developed in SAO PKF NK for low-cement refractory concretes, and also for the LCRC of aluminosilicate composition obtained. It is demonstrated that the properties of concretes prepared on the basis of the alumina developed are no worse than domestic and imported anal... | Low-Cement Refractory Concretes of Aluminum Silicate Composition Based on Submicron Aluminum Oxide Grade NK-Alumina 14 | 10.1007/s11148-021-00617-1 |
2021-11-01 | To quicken the process for high global warming potential (GWP) working fluid replacement for organic Rankine cycle (ORC) systems, a thermo-economic evaluation of low GWP fluid R1233zd(E) as an R245fa alternative has been performed in comparison with other natural fluids n-Pentane, Isopentane, and Isobutane for geotherm... | Thermo-economic evaluation of R1233zd(E) as an R245fa alternative in organic Rankine cycle for geothermal applications | 10.1007/s11814-021-0936-8 |
2021-11-01 | The effect of quenching from the intercritical temperature range on formation of martensite-ferrite structure in steel 10Kh3G3MFS deformed preliminarily by the method of cold radial forging is considered. The microstructure of the steel is studied using optical and scanning electron microscopes. The post-quenching grai... | Laws of Formation of Structure and Properties in Cold-Deformed Low-Carbon Structural Steel Under Incomplete Quenching | 10.1007/s11041-021-00694-6 |
2021-11-01 | Abstract The effect of Sn9Zn–xSiC composite solder on the wetting and soldering behavior of 6061 aluminum alloys is investigated using a kind of new water-soluble organic flux through optical and electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The oxide film of 6061 aluminum alloys during t... | Removal of Oxide Film and Wetting Behavior of Sn9Zn–xSiC Composite Solder on 6061 Aluminum Alloy with Activated Organic Water-Soluble Flux | 10.1007/s12540-020-00850-2 |
2021-11-01 | Abstract The temperature dependences of magnetic properties and magnetic field behavior of Co/Gd/Co thin-film three-layer systems obtained via ion-plasma magnetron sputtering are studied. The thickness of cobalt layers is 5.0 nm and of Gd layers ( t Gd ) varies from 3.0 to 10.0 nm. The bulk magnetic characteristics of ... | Temperature Dependence of Magnetic Properties and Magnetic Field Behavior of Co/Gd/Co Thin-Film Three-Layer Systems | 10.1134/S1063783421100140 |
2021-11-01 | In order to solve problems associated with food loss and the production of fresh drinking water, a device for low temperature freezing of water from concentrated products (cryoconcentrator) is proposed. Features of the proposed design of a capacitive cryoconcentrator using frozen ice as a cold storage mass for pre-cool... | Dynamics of Water Ice Formation during the Operation of Vessel Cryoconcentrators | 10.1007/s10556-021-00976-z |
2021-11-01 | A novel hybrid of graphene-carbon nanotubes (HRGC) was prepared by tannic acid (TA)-functionalized reduced graphene oxide (RGO) and the amino-functionalized multi-walled carbon nanotubes (AMCNT). TA was used as the coupling agent for the successful low temperature nanowelding between RGO and AMCNT based on the Schiff b... | Low-temperature Nanowelding between Graphene and Carbon Nanotubes for High Performance of Polyamide 66 Composites | 10.1007/s12221-021-0375-5 |
2021-11-01 | Abstract The paper presents the results of a study of the relationship between strength and performance (ductile–brittle transition temperatures T db and zero plasticity NDT, critical opening at the crack tip CTOD at a test temperature of –40°C) on the structural parameters of hot-rolled plate made of low-carbon low-al... | Relationship of Structure Parameters with Performance Characteristics of Shipbuilding Steels of Different Alloying | 10.1134/S2075113321060253 |
2021-11-01 | Abstract Four Nb–V–Ti steel plates of API 5LX70 linepipe were produced with changing accelerated cooling rate and finish rolling temperature using thermomechanical controlled process. The changes in ductile fracture surface, brittle fracture surfaces, including initial cleavage fracture and inverse fracture, arrowhead ... | Effect of Accelerated Cooling Rate and Finish Rolling Temperature on the Occurrence of Arrowhead Markings in Drop-Weight Tear Test of API 5LX70 Linepipe Nb–V–Ti Steel Plate | 10.1007/s12540-020-00841-3 |
2021-11-01 | This article presents the effect of thermal aging on threshold field strength and relative permittivity of cross-linked polyethylene (XLPE) with different cross-linking agent contents. Here, low-density polyethylene (LDPE) and dicumyl peroxide (DCP) are used as basic experimental material and cross-linking agent, respe... | Effect of Thermal Aging on Threshold Field Strength and Relative Permittivity of Cross-Linked Polyethylene with Different Cross-Linking Agent Contents | 10.1007/s42835-021-00823-4 |
2021-11-01 | Abstract Low drop failure tendency and reduced cost of low silver SAC alloys has provoked researchers to exploit their potential for portable electronics. Low Bi addition in near-eutectic SAC alloys has proven confinement of IMC layer. In order to exploit potential of Ag variation (0.5–1.5 wt%) on structural, thermal, ... | Structural, Thermal and Wetting Characteristics of Novel Low Bi-Low Ag Containing Sn–x.Ag–0.7Cu–1.0Bi (x = 0.5 to 1.5) Alloys for Electronic Application | 10.1007/s12540-020-00880-w |
2021-11-01 | Abstract The (5–15)%CoO/ZrO 2 (T + M) catalysts were studied by XRD and TPR-H 2 . In the oxidized samples, 80–90% of cobalt oxide is present in the form of finely dispersed Co 3 O 4 , which interacts with the support ( $${\text{Co}}_{x}^{{3 + }}{\text{Co}}_{y}^{{2 + }}{\text{O}}_{z}^{{2 - }}$$ clusters), and the rest o... | The Nature of the Activity of СoО/ZrO2 Catalysts in CO Oxidation with Oxygen in Excess Hydrogen | 10.1134/S0023158421060070 |
2021-11-01 | The low temperature of sewage in north China results in low performance of biological treatment at municipal wastewater treatment plants (MWTPs), especially in biological nitrogen removal. A modified two-stage A/O process with an embedded biofilm was proposed to enhance nitrogen removal. The operation performance of a ... | Comparison of nitrogen removal efficiency and microbial characteristics of modified two-stage A/O, A2/O and SBR processes | 10.1007/s10653-021-00855-9 |
2021-11-01 | Abstract Coal samples of three ranks are investigated: long-flame (D) coal, long-flame gas (DG) coal, and gas (G) coal. The composition and properties of the coal samples and their thermal-destruction products are studied by the following methods: proximate analysis, ultimate analysis, petrographic analysis, thermograv... | Low-Temperature Thermal Destruction of Kuznetsk Basin Coal: Product Composition | 10.3103/S1068364X21110041 |
2021-11-01 | Melting in ceramic crucibles is one of the stages in jewelry recycling. The consistency of the concrete mass plays an important role in molding large-scale refractory crucibles through vibratory casting. This article discusses the impact of commercially available dispersants (Castament FS 10, Melflux 1641 F, Peramin Al... | Effect of Dispersants on the Properties of Low-Cement Concrete for Jewelry Waste Melting Furnaces | 10.1007/s11148-021-00627-z |
2021-11-01 | This study aimed to develop a cryopreservation protocol for the long-term preservation of yacon [ Smallanthus sonchifolius (Poepp. and Endl.)], an Andean crop with high fructooligosaccharide content in its tuberous roots. Initially, the cryopreservation protocol was developed using a yacon clone originated from Ecuador... | Droplet-vitrification methods for apical bud cryopreservation of yacon [Smallanthus sonchifolius (Poepp. and Endl.) H. Rob.] | 10.1007/s11240-021-02116-0 |
2021-11-01 | Background Low light is a primary regulator of chrysanthemum growth. Our aim was to analyse the different transcriptomic responses of two Chrysanthemum morifolium cultivars to low light. Methods and results We conducted a transcriptomic analysis of leaf samples from the ‘Nannonggongfen’ and ‘Nannongxuefeng’ chrysanthem... | Comparison of the transcriptomic responses of two Chrysanthemum morifolium cultivars to low light | 10.1007/s11033-021-06729-8 |
2021-11-01 | Substrates provide the necessary support for scientific explorations of numerous promising features and exciting potential applications in two-dimensional (2D) transition metal dichalcogenides (TMDs). To utilize substrate engineering to alter the properties of 2D TMDs and avoid introducing unwanted adverse effects, var... | Unveiling the origin of anomalous low-frequency Raman mode in CVD-grown monolayer WS2 | 10.1007/s12274-021-3769-1 |
2021-11-01 | Surface latent heat flux (LHF) is an important component in the heat exchange between the ocean and atmosphere over the tropical western North Pacific (WNP). The present study investigates the factors of seasonal mean LHF variations in boreal summer over the tropical WNP. Seasonal mean LHF is separated into two parts t... | Factors of boreal summer latent heat flux variations over the tropical western North Pacific | 10.1007/s00382-021-05835-4 |
2021-11-01 | Abstract The phase composition, microstructure, mechanical properties and stability of foils of (Sn 4 In) 100– х Bi x ( х = 0–8 at %) alloys synthesized by the method of ultrafast quenching from the melt at cooling rates up to 10 5 K/s are studied. Rapidly hardened foils of (In 4 Sn) 100– х Bi x alloys at a bismuth co... | Structure and Microhardness of (Sn4In)100 – хBix (x = 0–8 аt %) Alloys Produced by High-Speed Cooling | 10.1134/S1027451021060446 |
2021-11-01 | User-friendly fingerprint powders, namely efficient, low-cost and nontoxic ones, are always desirable for the development of latent fingerprints (LFPs). Here, we described the use of pristine graphic carbon nitride quantum dots (g-C 3 N 4 QDs) as a new kind of user-friendly fingerprint powder. The g- 3 N 4 QDs can be e... | Pristine Graphic Carbon Nitride Quantum Dots for the Visualized Detection of Latent Fingerprints | 10.2116/analsci.20P336 |
2021-11-01 | Comparative studies of the microstructure, porosity and hardness of the surface layer of a low-carbon steel are performed after nitrocarburizing by traditional single-cycle and novel multi-cycle treatments. The sizes and the content of pores in the surface layer are determined, the profile of the variation of microhard... | Effect of Multi-Cycle Nitrocarburizing on the Microstructure and Surface Hardness of Low-Carbon Steel | 10.1007/s11041-021-00699-1 |
2021-11-01 | Investigation of the fatigue response of friction stir-welded (FSWed) joints is especially important in the design and manufacturing of components with exposure to cyclic loading. In this study, cyclic response of FSWed pure copper joints is investigated in the low-cycle fatigue regime. Microstructural characterization... | Low-Cycle Fatigue Behavior of Friction Stir-Welded Copper Joints | 10.1007/s11665-021-06034-2 |
2021-11-01 | Abstract The biological degradation of mixed composites of low density polyethylene (PE) with natural rubber (NR) in soil is studied. The biodegradability of composites was monitored through changes in the mass, appearance, and chemical composition of the materials using infrared spectroscopy. Analysis of the changes i... | Biodegradation of Blends of Low-Density Polyethylene with Natural Rubber in Soil | 10.1134/S1990793121060257 |
2021-11-01 | The impacts of the low level jets that form through the gaps in the topography in the Limpopo and Zambezi River Valleys (LRV and ZRV) on southern African climate are investigated. ERA-5 reanalysis data and numerical experiments using regional climate models reveal that the two valleys act as main gateways for southwest... | The influence of southeastern African river valley jets on regional rainfall | 10.1007/s00382-021-05846-1 |
2021-11-01 | Abstract— The long-term data (2000–2017) on the abundance of burbot larvae (Lota lota L., 1758) during the downstream migration from the spawning areas in the spawning tributaries of the Ob River (the Voykar and Sob rivers) and in feeding areas in the floodplain system are analyzed. The average absolute abundance of fe... | Survival of Early Burbot Larvae (Lota lota L., 1758) in the Ob Floodplain | 10.1134/S1067413621060060 |
2021-11-01 | Li-S batteries are considered as a highly promising candidate for the next-generation energy storage system, attributing to their tremendous energy density. However, the two-dimensional island nucleation-growth process of lithium sulfide leads to a thick insulating film covering the electrode, inducing slow electrons t... | Bio-inspired construction of electrocatalyst decorated hierarchical porous carbon nanoreactors with enhanced mass transfer ability towards rapid polysulfide redox reactions | 10.1007/s12274-021-3319-x |
2021-11-01 | An on-chip nanopower RC relaxation oscillator is developed in a 180-nm standard CMOS process, consuming 300 nW while running at 10 kHz. Employing a frequency compensation scheme that reduces the frequency drift introduced by comparator offset and delay, the proposed oscillator achieves a significant low temperature coe... | A 300 nW 10 kHz Relaxation Oscillator with 105 ppm/
$$^{\circ }$$
∘
C Temperature Coefficient | 10.1007/s00034-021-01739-0 |
2021-11-01 | Multistage piston compressor units based on low-speed long-stroke stages are considered as a means of compressing gases to high pressures. A theoretical analysis of the influence of the choice of interstage pressures of compressed air on the efficiency of the operation of low-speed stages is presented. It is shown that... | Implementation Features of Multistage Compression in Air Compressor Units Based on Low-Speed Long-Stroke Stages | 10.1007/s10556-021-00978-x |
2021-11-01 | An ultra-wideband (12–18 GHz) low-noise amplifier (LNA) using a 65 nm CMOS technology is proposed, in which a common-source cascode structure with capacitive feedback technique is employed, leading to the excellent gain flatness. In order to provide the unconditional stability at all frequencies, a notch filter is plac... | Low-voltage and low-power Ku-band CMOS LNA using capacitive feedback | 10.1007/s10470-021-01922-y |
2021-11-01 | Abstract Chromium is one of the most hazardous inorganic water pollutants which is constantly released into water resources by natural and industrial processes. Microfiltration membranes (with pore sizes between 0.1–10 μm) cannot separate chromium ions and hence nanofiltration membranes (with pore sizes between 0.5–2 n... | Synthesis of Clay-Based Adsorptive Microfiltration Membranes | 10.3103/S1063455X21060047 |
2021-11-01 | Abstract A nearly saturated 2,2,2-trifluoroethyl acetate (FEA)-based electrolyte solution has a low viscosity and delivers superior charge/discharge performance for LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) positive electrodes for lithium ion batteries. However, FEA has a low flash point, and hence needs to be mixed with an ... | Improved stability of highly concentrated LiBF4/fluorinated ethyl acetate-based electrolyte solutions with a co-solvent for LiNi0.8Co0.1Mn0.1O2 positive electrodes in lithium ion batteries | 10.1007/s10800-021-01590-w |
2021-11-01 | In this paper, the authors have developed a new device and method for measuring the efficiency of spontaneous imbibition and displacement in a low permeability reservoir. The innovative design of the new experimental device effectively combines the traditional volumetric method and the weighing method. The improved rel... | Device and Method for Measuring the Efficiency of Spontaneous Imbibition and Displacement in a Low-Permeability Reservoir | 10.1007/s10553-021-01315-x |
2021-11-01 | Abstract The spatial relationships of the lower mantle D" layer elements with Phanerozoic Large Igneous Provinces (LIPs), as well as with the young hotspots and kimberlites in the African region, are discussed. Similar relationships are also shown for the Cape Karoo and Parana extended basins, which had developed as in... | Relationship between Superficial and Deep Tectonics in the African Region Based on Geological–Geophysical Data | 10.1134/S0016852121060054 |
2021-11-01 | Abstract The geological, petrographic, and geochemical features detected in the Upper Pliocene acid volcanic rocks sampled in the Upper Chegem and Lower Chegem volcanic highlands provide evidence that the Upper Chegem volcanic rocks are not tuffs that have been subaerially transported from the Upper Chegem Highland; th... | Upper Pliocene Acid Volcanic Rocks in the Upper Chegem and Lower Chegem Volcanic Highlands, North Caucasus | 10.1134/S0742046321060075 |
2021-11-01 | The decades-old idea of electric-powered commercial flight has re-emerged alongside high expectations for greener CO 2 emission-free air transportation. But to what extent can electric aircraft reduce the energy and environmental footprint of aviation? What should such aircraft look like, and how does their operation c... | The potential of full-electric aircraft for civil transportation: from the Breguet range equation to operational aspects | 10.1007/s13272-021-00530-w |
2021-11-01 | Coastal nutrient pollution is an ever-present threat to estuaries worldwide. Benthic denitrification has been identified as a crucial ecosystem service to help mitigate increasing N loads to the coast. However, the controls on denitrification in low-nutrient systems are not well constrained and are likely different to ... | Ecogeochemistry and Denitrification in Non-eutrophic Coastal Sediments | 10.1007/s12237-021-00912-7 |
2021-11-01 | The importance of studying the atmospheric pollution due to its effects on human health and other ecosystems, the inexistence of national production of equipment for air sample collection, and the high cost of the imported equipment (especially in developing countries) led the authors of the present work to construct a... | Low-cost Gent type sampler constructed for urban atmospheric aerosol sampling | 10.1007/s11356-020-12103-1 |
2021-11-01 | Abstract Objective Organic acids have a wide range of applications and have attracted the attention of many industries, and their large-scale applications have led fermentation production to low-cost development. Among them, the microbial fermentation method, especially using Escherichia coli as the production host, ha... | The challenges and prospects of Escherichia coli as an organic acid production host under acid stress | 10.1007/s00253-021-11577-4 |
2021-11-01 | EU has set ambitious commitment to achieve low carbon energy and economy transition up to 2050. This low carbon transition means sustainable energy development path based on renewable energy sources and first of all should address the energy poverty vulnerability and justice issues. The main goal of the paper is to dev... | Energy Poverty and Low Carbon Just Energy Transition: Comparative Study in Lithuania and Greece | 10.1007/s11205-021-02685-9 |
2021-11-01 | Abstract The existing approaches to bioisobutanol synthesis and commercial production are considered. Ways of using bioisobutanol as a component of motor fuel and as a promising feedstock for the production of “green” hydrocarbons and other petrochemicals that favor the progress of low-carbon economy are discussed. Par... | Bioisobutanol as a Promising Feedstock for Production of “Green” Hydrocarbons and Petrochemicals (A Review) | 10.1134/S0965544121110165 |
2021-11-01 | The aim of this study was to compare peloid therapy in addition to home exercise with home exercise alone in terms of pain, function, quality of life, and depression in patients with chronic low back pain (cLBP). A total of 106 cLBP patients were divided into two equal groups as treatment and control. The peloid therap... | Effectiveness of peloid therapy in patients with chronic low back pain: a single-blind controlled study | 10.1007/s00484-021-02137-6 |
2021-11-01 | Abstract The Qianjiadian (QJD) uranium ore field, located in the southwest of the Songliao Basin of east China, was discovered within the red-variegated depositional layer of the Upper Cretaceous Yaojia Formation (Fm). It preformed some particular and complex characteristics in respect of the occurrence location, ore-h... | Characteristics and Genesis of Organic Matter within the Lower Member of Yaojia Formation and its Implications for Tabular-type Uranium Deposits in the Southwest of Songliao Basin | 10.1134/S1075701521310019 |
2021-11-01 | Due to the rapid economic development and acceleration of industrialization, most cities in China are experiencing severe air pollution. Exposure to fine particulate matter (PM 2.5 ) has been associated with acute lower respiratory tract infection (ALRI). To estimate associations between short-term exposure to PM 2.5 a... | The association between fine particulate matter and acute lower respiratory infections in Yancheng City, China | 10.1007/s11356-021-15102-y |
2021-11-01 | Purpose To evaluate the efficacy and safety of lung low-dose radiation therapy (LD-RT) for pneumonia in patients with coronavirus disease 2019 (COVID-19). Materials and methods Inclusion criteria comprised patients with COVID-19-related moderate–severe pneumonia warranting hospitalization with supplemental O 2 and not ... | Could pulmonary low-dose radiation therapy be an alternative treatment for patients with COVID-19 pneumonia? Preliminary results of a multicenter SEOR-GICOR nonrandomized prospective trial (IPACOVID trial) | 10.1007/s00066-021-01803-3 |
2021-11-01 | Low-grade fibromyxoid sarcoma (LGFMS) is a rare soft-tissue sarcoma genetically characterized by the presence of the FUS-CREB3L2 gene fusion. While LGFMS exhibits indolent features during its early stages, the rates of recurrence, metastasis, and death from the disease are high. Presently, the role of FUS-CREB3L2 gene ... | Establishment and characterization of NCC-LGFMS1-C1: a novel patient-derived cell line of low-grade fibromyxoid sarcoma | 10.1007/s13577-021-00612-1 |
2021-11-01 | Abstract The results of studies on the use of solid-state infrared lasers in combination with special targets for obtaining primary electrons in ionization chambers of plasma-ion thrusters are presented. Such thrusters being equipped with free molecular air intakes for using the surrounding atmosphere as a propellant f... | Prospects of Infrared Lasers in Air-Breathing Electric Thrusters | 10.1134/S1028335821110045 |
2021-11-01 | It is of necessity to investigate the adjustment of flood discharge capacity in the Lower Yellow River (LYR) because of its profound importance in sediment transport and flood control decision-making, and additionally its magnitude is influenced by the channel and upstream boundary conditions, which have significantly ... | Adjustment of flood discharge capacity with varying boundary conditions in a braided reach of the Lower Yellow River | 10.1007/s11442-021-1914-0 |
2021-11-01 | Abstract An unsteady heat conduction problem is studied in a plane consisting of two half-planes filled with different inhomogeneous materials with exponential internal thermal conductivities. It is assumed that there is a crack at the boundary of the half-planes, i.e., inhomogeneous transmission conditions are set. In... | Unsteady Heat Conduction Problem for a Plane with a Crack at the Interface between Two Inhomogeneous Materials | 10.1134/S0965542521110075 |
2021-11-01 | Purpose Globally planned surgical procedures have been deferred during the current COVID-19 pandemic. The study aimed to report the outcomes of planned urgent and cancer cases during the current pandemic using a multi-disciplinary prioritisation group. Methods A prospective cohort study of patients having urgent or can... | Planned surgery in the COVID-19 pandemic: a prospective cohort study from Nottingham | 10.1007/s00423-021-02207-8 |
2021-11-01 | Background Laparoscopic surgery is regarded as the gold standard for the surgical management of cholelithiasis. To improve post-operative pain, low-pressure laparoscopic cholecystectomies (LPLC) have been trialed. A recent systematic review found that LPLC reduced pain; however, many of the randomised control trials we... | Reduced Laparoscopic Intra-abdominal Pressure During Laparoscopic Cholecystectomy and Its Effect on Post-operative Pain: a Double-Blinded Randomised Control Trial | 10.1007/s11605-021-04919-0 |
2021-11-01 | Low-latency and energy-efficient multi-Gbps LDPC decoding requires fast-converging iterative schedules. Hardware decoder architectures based on such schedules can achieve high throughput at low clock speeds, resulting in reduced power consumption and relaxed timing closure requirements for physical VLSI design. In this... | Fast-Converging and Low-Power LDPC Decoding: Algorithm, Architecture, and VLSI Implementation | 10.1007/s11265-021-01680-0 |
2021-10-30 | Main conclusion Soybean phosphorous efficiency QTLs were identified and candidate genes were predicted using chlorophyll fluorescence parameters through GWAS and RNA-seq. Abstract Phosphorus (P) is an essential nutrient element for crop growth and development, lack of P uptake seriously affects yield in various crops. ... | Identification of soybean phosphorous efficiency QTLs and genes using chlorophyll fluorescence parameters through GWAS and RNA-seq | 10.1007/s00425-021-03760-8 |
2021-10-28 | Background Histone methylation occurs primarily on lysine residues and requires a set of enzymes capable of reading, writing, and erasing to control its establishment and deletion, which is essential for maintaining chromatin structure and gene expression. Histone methylation and demethylation are contributed to plant ... | Genome-wide identification, classification, and expression analysis of the JmjC domain-containing histone demethylase gene family in birch | 10.1186/s12864-021-08063-6 |
2021-10-27 | The first melatonergic antidepressant drug, agomelatine (AGM), is commonly used for controlling major depressive disorders. AGM suffers low (< 5%) oral bioavailability owing to the hepatic metabolism. The current work investigated the potential of low-frequency sonophoresis on enhancing transdermal delivery of AGM-load... | Low-Frequency Sonophoresis as an Active Approach to Potentiate the Transdermal Delivery of Agomelatine-Loaded Novasomes: Design, Optimization, and Pharmacokinetic Profiling in Rabbits | 10.1208/s12249-021-02147-y |
2021-10-26 | Background Silages, as a nutritious and long-term preserved fodder, is achieved through fermentation. However, the constant low temperatures and freeze–thaw event are key factors that affect the quality of silages due to low levels of lactic acid production and undesirable microbial community revitalization. In this st... | Characteristics of Lactobacillus plantarum QZW5 and its effects on wheat silage under multigelation | 10.1186/s40538-021-00251-6 |
2021-10-25 | Removal of excessive sulfate from the low-temperature groundwater environment in the Longdong area is important for protecting human health. The effects of naturally occurring hydrochemical ions and pH on sulfate adsorption were examined to verify the applicability of magma-derived scoria and determine whether scoria c... | Application and adsorption characteristics of scoria for removing sulfate from a low-temperature groundwater environment in Longdong area, China | 10.1007/s12665-021-10053-6 |
2021-10-25 | The study of slow earthquake activity, which occurs in the shallow and deep sides of seismogenic zone, is crucial for understanding subduction zones, including variations in frictional properties with depth and interplate coupling. Observations at the seafloor are necessary, particularly for shallow slow earthquakes oc... | Shallow tectonic tremor activities in Hyuga-nada, Nankai subduction zone, based on long-term broadband ocean bottom seismic observations | 10.1186/s40623-021-01533-x |
2021-10-25 | Background Sepsis is the leading cause of death worldwide in pediatric populations. Studies in low-resource settings showed that the majority of pediatric patients with sepsis still have a high mortality rate. Methods We retrospectively collected records from 2014 to 2019 of patients who had been diagnosed with sepsis ... | Factors associated with mortality of pediatric sepsis patients at the pediatric intensive care unit in a low-resource setting | 10.1186/s12887-021-02945-0 |
2021-10-25 | In this study, descriptive statistics, correlation matrix, multiple regression model, and geostatistical models were used to assess the contamination of groundwater with respect to trace elements in the Lower Tano river basin, Ghana, West Africa. A total number of 48 boreholes drilled across the basin with depths rangi... | The use of statistical methods to assess groundwater contamination in the Lower Tano river basin, Ghana, West Africa | 10.1007/s10661-021-09514-z |
2021-10-22 | Background Skin-to-skin contact (SSC) practice improves newborn survival and child development through preventing hypothermia in newborns, improving early initiation of breastfeeding practice, and strengthening mother-child bonding. Despite having numerous benefits, it is one of the least practiced interventions in low... | Prevalence and factors associated with skin-to-skin contact (SSC) practice: findings from a population-based cross-sectional survey in 10 selected districts of Bangladesh | 10.1186/s12884-021-04189-3 |
2021-10-22 | The order from quantum disorders (OFQD) phenomenon is well-known and ubiquitous in particle physics and frustrated magnetic systems. Typically, OFQD transfers a spurious Goldstone mode into a pseudo-Goldstone mode with a tiny gap. Here, we report an opposite phenomenon: OFQD transfers a spurious quadratic mode into a t... | Slow-Goldstone mode generated by order from quantum disorder and its experimental detection | 10.1007/JHEP10(2021)190 |
2021-10-21 | Background Nitrogen (N) is an essential macronutrient that significantly affects turf quality. Commercial cultivars of bermudagrass ( Cynodon dactylon (L.) Pers.) require large amounts of nitrogenous fertilizer. Wild bermudagrass germplasm from natural habitats with poor nutrition and diverse N distributions is an impo... | Integration of the metabolome and transcriptome reveals the mechanism of resistance to low nitrogen supply in wild bermudagrass (Cynodon dactylon (L.) Pers.) roots | 10.1186/s12870-021-03259-0 |
2021-10-21 | In this study, we have demonstrated the fabrication of perforated absorbers on two substrates, i.e., ITO/PET and Twill weave cloth. Perforation is required to enable the use of absorbers in the application where air breathability, ventilation and thermal equilibrium are necessary. For perforations, holes were machined ... | Perforated lightweight microwave metamaterial broadband absorber with discontinuous ground plane | 10.1007/s00339-021-05008-4 |
2021-10-19 | The present study demonstrates that the down-regulation of peroxisome proliferator-activated receptor-α (PPARα) results in chronic low ambient temperature (LT) exposure-induced cardiac dysfunction and remodeling, emphasizing the therapeutic potential of PPARα activation strategies (e.g. fenofibrate treatment) in LT-ass... | Targeting PPARα in low ambient temperature exposure-induced cardiac dysfunction and remodeling | 10.1186/s40779-021-00347-y |
2021-10-19 | Background The ability of 3D printing using plastics and resins that are magnetic resonance imaging (MRI) compatible provides opportunities to tailor design features to specific imaging needs. In this study an MRI compatible cradle was designed to fit the need for repeatable serial images of mice within a mouse specifi... | Design and 3D-printing of MRI-compatible cradle for imaging mouse tumors | 10.1186/s41205-021-00124-6 |
2021-10-16 | Dopant-tunable transparent conductive oxide (≤ 50 nm) fabricated via electric-field-driven metal implantation (m-TCOs; m= Ni, Ag, and Cu) is demonstrated. The m-TCOs exhibit ultrahigh transparency, low sheet resistance, and broad work function tunability, leading to outstanding performance in various optoelectronic dev... | Dopant-Tunable Ultrathin Transparent Conductive Oxides for Efficient Energy Conversion Devices | 10.1007/s40820-021-00735-y |
2021-10-15 | Background Rose is one of most popular ornamental plants worldwide and is of high economic value and great cultural importance. However, cold damage restricts its planting application in cold areas. To elucidate the metabolic response of rose under low temperature stress, we conducted transcriptome and de novo analysis... | Transcriptome and de novo analysis of Rosa xanthina f. spontanea in response to cold stress | 10.1186/s12870-021-03246-5 |
2021-10-15 | Background Animal communities are vulnerable to agricultural practices. Intensive farming considerably reduces overall arthropod diversity, but not necessarily pest abundance. Natural control of herbivores in agroecosystems is accomplished by predators and parasitoids, but in intensified agricultural regimes, the chemi... | Comparison of arthropod communities between high and low input maize farms in Mexico | 10.1186/s43170-021-00060-9 |
2021-10-14 | According to the World Health Organization (WHO), air pollution is currently one leading cause of death around the world. As a result, some projects have emerged to monitor air quality through the implementation of low-cost Wireless Sensor Networks (WSNs). However, the type of technology and the sensors’ location have ... | Missing Data Estimation in a Low-Cost Sensor Network for Measuring Air Quality: a Case Study in Aburrá Valley | 10.1007/s11270-021-05363-1 |
2021-10-11 | Although there has been a focus on THz filters so far, there is a significant deficiency in advancing low-temperature THz filters. According to the needs, we proposed a tunable THz filter that selectively permits the desired incident frequencies to be propagated in relevance with our purpose. The presence of a low-temp... | Wave propagation in an optimized tunable multi-channel filter based on one-dimensional nano superconductor photonic crystal | 10.1007/s11082-021-03191-5 |
2021-10-11 | Atmospheric steam engines (ASE) were the first practical machines to convert thermal energy to mechanical work. However, their low efficiency and specific power relegated them to oblivion. Nevertheless, the recent urge for harnessing energy from heat sources with low to medium temperatures (100 to 150ºC), especially in... | Thermodynamical model of an atmospheric steam engine | 10.1007/s40430-021-03209-9 |
2021-10-11 | Using meteor radar, radiosonde observations and MERRA-2 reanalysis data from 12 August to 31 October 2006, we report a dynamical coupling from the tropical lower atmosphere to the mesosphere and lower thermosphere through a quasi-27-day intraseasonal oscillation (ISO). It is interesting that the quasi-27-day ISO is obs... | A quasi-27-day oscillation activity from the troposphere to the mesosphere and lower thermosphere at low latitudes | 10.1186/s40623-021-01521-1 |
2021-10-09 | Introduction Multi-parameter diagnostic devices can simplify cardiometabolic disease diagnosis. However, existing devices may not be suitable for use in low-resource settings, where the burden of non-communicable diseases is high. Here we describe the development of a target product profile (TPP) for a point-of-care mu... | Development of a target product profile for a point-of-care cardiometabolic device | 10.1186/s12872-021-02298-7 |
2021-10-08 | The ratio of hydrogen bonds in water molecules is significantly decreased by introducing oxygen-ligand Mg 2+ and hydrogen-ligand ClO 4 −, resulting in an ultralow solidifying point of − 121 °C. The excellent low-temperature physicochemical properties and good compatibility with Zn metal of 3.5 M (mol L −1 ) Mg(ClO 4 ) ... | Synergistic Effect of Cation and Anion for Low-Temperature Aqueous Zinc-Ion Battery | 10.1007/s40820-021-00733-0 |
2021-10-07 | Herein, novel isomeric diamines containing semi- N -methyl substituted bisbenzimidazole and derived polyimides (PIs) were successfully synthesized. Experimental data showed that the obtained PIs exhibited outstanding heat resistance and dimensional stability, including 5 % thermal weight loss temperature ( T d5 % ) of ... | Novel semi-N-methyl substituted bisbenzimidazole based polyimide films with low coefficient of thermal expansion and high Tg | 10.1007/s10965-021-02757-x |
2021-10-07 | Alzheimer’s disease (AD) is a chronic neurodegenerative disease characterized by the accumulation of amyloid β (Aβ) and neurofibrillary tangles. The last decade, it became increasingly clear that neuroinflammation plays a key role in both the initiation and progression of AD. Moreover, also the presence of peripheral i... | Low-grade peripheral inflammation affects brain pathology in the AppNL-G-Fmouse model of Alzheimer’s disease | 10.1186/s40478-021-01253-z |
2021-10-06 | Background Glutenin contents and compositions are crucial factors influencing the end-use quality of wheat. Although the composition of glutenin fractions is well known, there has been relatively little research on the genetic basis of glutenin fractions in wheat. Results To elucidate the genetic basis for the contents... | Quantitative traits loci mapping and molecular marker development for total glutenin and glutenin fraction contents in wheat | 10.1186/s12870-021-03221-0 |
2021-10-05 | Background HIV stigma undermines a person’s wellbeing and quality of life and hinders HIV control efforts. This study examined the extent and drivers of HIV stigma in the teaching hospitals in Sana’a City, Yemen. The country has low HIV prevalence (4000 (2000-11,000) per 100,000) and limited HIV control funds, worsened... | HIV stigma in the teaching hospitals in Sana’a, Yemen: a conflict and low-resource setting | 10.1186/s12889-021-11845-y |
2021-10-03 | Environmental monitoring requires periodic measurement of parameters such as pH, heavy metals, nitrates and phosphates in field settings, autonomously. Microfluidic devices have been considered for environmental sensing due to its inherent advantages of lower volume, faster sensing and low-cost fabrication. Various sen... | Patterned threads as solid-state reagent storage and delivery medium for automated periodic colorimetric monitoring of the environment | 10.1007/s10404-021-02496-x |
2021-10-01 | The article presents a new thermo-mechanical machining method for the manufacture of long low-rigidity shafts which combines straightening and heat treatment operations. A fixture for thermo-mechanical treatment of long low-rigidity shafts was designed and used in tests which involved axial straightening of shafts comb... | A thermo-mechanical machining method for improving the accuracy and stability of the geometric shape of long low-rigidity shafts | 10.1007/s10845-020-01733-4 |
2021-10-01 | Abstract As a promising photovoltaic technology, perovskite solar cells (pero-SCs) have developed rapidly over the past few years and the highest power conversion efficiency is beyond 25%. Nowadays, the planar structure is universally popular in pero-SCs due to the simple processing technology and low-temperature prepa... | Low-temperature-processed metal oxide electron transport layers for efficient planar perovskite solar cells | 10.1007/s12598-020-01676-y |
2021-10-01 | Abstract The mechanical properties of the weld metal in a welded joint of low-carbon low-alloy 22K steel are studied using uniaxial tensile tests in the temperature range from room temperature to 1200°C. The changes in the structures and the strength and plastic properties of the base metal and the weld metal in the te... | Effect of High Temperatures on the Mechanical Properties of the Weld Metal in the Welded Joint of Low-Carbon Low-Alloy Steel | 10.1134/S0036029521100256 |
2021-10-01 | The low-yielding-strength (LYS) steel is promising for energy-absorbing devices due to its outstanding plasticity. Although the mechanical properties of LYS steel for quasi-static and ultra-high-rate were studied, the link between them has not been established yet. Here we report both experiments and numerical simulati... | Strain-rate-dependent constitutive and damage models for a low-yielding-strength steel under dynamic loadings | 10.1007/s12206-021-0911-7 |
2021-10-01 | All-inorganic perovskite solar cells suffer from low performance due to unsatisfactory carrier transport and light harvesting efficiency. Semiconductor nanopillar arrays can reduce light reflection loss and suppress exciton recombination dynamics in optoelectronic devices. In all-inorganic perovskite solar cells, few s... | Interface engineering of high performance all-inorganic perovskite solar cells via low-temperature processed TiO2 nanopillar arrays | 10.1007/s12274-021-3566-x |
2021-10-01 | Background Xylanase, an important accessory enzyme that acts in synergy with cellulase, is widely used to degrade lignocellulosic biomass. Thermostable enzymes with good catalytic activity at lower temperatures have great potential for future applications in the feed and fuel industries, which have distinct demands; ho... | Improvement of XYL10C_∆N catalytic performance through loop engineering for lignocellulosic biomass utilization in feed and fuel industries | 10.1186/s13068-021-02044-3 |
2021-10-01 | In the drilling process of difficult-to-cut materials, conventional drilling has resulted in various problems such as high drilling temperature and poor machining quality. Low-frequency vibration-assisted drilling has great potential in overcoming these problems since broken chips are generated. In this paper, a low-fr... | Development of a low-frequency vibration-assisted drilling device for difficult-to-cut materials | 10.1007/s00170-021-07668-1 |
2021-10-01 | The carbon vacancy in 4H-SiC is an important recombination center of the minority carrier and a direct consequence of SiC-based device degradation. In 4H-SiC, this defect acts as the primary carrier-lifetime killer. Whether, low-energy electron radiation exposure or high temperature processing in an inert ambient gas w... | Simulation Study of Carbon Vacancy Trapping Effect on Low Power 4H-SiC MOSFET Performance | 10.1007/s12633-020-00920-5 |
2021-10-01 | Based on the experimental data of full-range middle-low temperature coal tar (LTCT) hydrodeoxidation (HDO), the phenolic compounds (PC) in feedstock were divided into three lumps, four lumps or five lumps according to different reaction activities. Three corresponding lumping kinetic models of LTCT HDO were established... | Lumped kinetic model for the hydrodeoxygenation of full-range middle-low temperature coal tar | 10.1007/s11144-021-02053-1 |
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