publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
|---|---|---|---|
2021-08-01 | The pure phase (Zr 0.8 ,Sn 0.2 )TiO 4 nano crystals have been prepared by hydrothermal-molten salt method. The effects of the pH of solvent system, the calcinations temperature and the ratio of composite molten salt on the phase composition and crystalline morphology have been investigated. The results show that the hi... | Preparation and characterization of (Zr0.8,Sn0.2)TiO4 nano crystals by hydrothermal-molten salt method | 10.1007/s10971-021-05581-3 |
2021-08-01 | Studies on phase transformations in Fe-11Al-5Mn-1C (Alloy 1) and Fe-11Al-10Mn-1C (Alloy 2) ferritic low-density steels were carried out using differential thermal analysis (DTA) and dilatometry (all compositions in wt.%). An appreciable difference was observed between the phase transformation temperatures predicted by ... | Phase Transformation and Hot Working Studies on High-Al Fe-Al-Mn-C Ferritic Low-Density Steels | 10.1007/s11665-021-05857-3 |
2021-08-01 | The influence of the underlying nucleation layer on the properties of semipolar $$(11{\bar{2}}2)$$ ( 11 2 ¯ 2 ) GaN grown on m -plane sapphire by metalorganic vapor-phase epitaxy has been investigated. $$(11{\bar{2}}2)$$ ( 11 2 ¯ 2 ) GaN epilayers of ~ 1 μ m thickness were grown using four different initiating sequenc... | Influence of Nucleation Layers on MOVPE Growth of Semipolar (
$$11{\bar{2}}2$$
11
2
... | 10.1007/s11664-021-08969-7 |
2021-08-01 | Abstract Wood is an increasingly important material in the sustainable transition of societies worldwide. The performance of wood in structures is intimately tied to the presence of moisture in the material, which directly affects important characteristics such as dimensions and mechanical properties, and indirectly it... | Targeted acetylation of wood: a tool for tuning wood-water interactions | 10.1007/s10570-021-04033-z |
2021-08-01 | Near-neutral bleaching of cotton fabrics at low temperature is of great importance for saving energy and ecological friendliness in textile industry. In this work, glycerol triacetate (GT) was investigated as an activator of hydrogen peroxide (H 2 O 2 ) for low temperature bleaching of cotton knitted fabrics, and satis... | An eco-friendly approach to low-temperature and near-neutral bleaching of cotton knitted fabrics using glycerol triacetate as an activator | 10.1007/s10570-021-04030-2 |
2021-08-01 | Abstract Viscous bitumen for highway use, which matches all the physicomechanical properties of BND 60/90 bitumen (in other words, those required by the standard for bitumen), may be produced by modifying the organic component of hydrogenated coal with sulfur. The new bitumen may be used as a road surface operating at ... | Bitumen Production from Shubarkol Coal (Kazakhstan) | 10.3103/S1068364X21080044 |
2021-08-01 | The partitioning of nitrogen atoms and its effect on the retained austenite content (RAC) during quenching and partitioning (Q&P) process were investigated by dilatometry, X-ray diffraction, and field emission transmission electron microscopy with energy-dispersive spectrometer mapping in a 00Cr13Mn8N steel. Nitrogen p... | Partitioning of nitrogen atoms and its effect on retained austenite content in an ultra-low-carbon Cr–Mn–N stainless steel | 10.1007/s42243-021-00560-y |
2021-08-01 | An innovative method for utilizing synthetic calcium fluoride (CaF 2 ), recovered from fluoride-containing semiconductor wastewater, and waste sulfuric acid (H 2 SO 4 ) to produce hydrofluoric acid (HF) was investigated. The research was set to study the low-temperature production of HF via reaction of synthetic CaF 2 ... | Recycle of synthetic calcium fluoride and waste sulfuric acid to produce electronic grade hydrofluoric acid | 10.1007/s11356-020-09867-x |
2021-08-01 | The impact energy prediction model of low carbon steel was investigated based on industrial data. A three-layer neural network, extreme learning machine, and deep neural network were compared with different activation functions, structure parameters, and training functions. Bayesian optimization was used to determine t... | Prediction of the Charpy V-notch impact energy of low carbon steel using a shallow neural network and deep learning | 10.1007/s12613-020-2168-z |
2021-08-01 | The low velocity impact response of the epoxy composite materials, which were reinforced with various hybrid contents, such as plain pure or hybrid fabrics (carbon, aramid and glass fibers and copper wires) and filler mixtures into the epoxy matrix (aramid powder, potatoes starch, barium ferrite and carbon black) was i... | Influence of Fiber Orientation and Fillers on Low Velocity Impact Response of the Fabric Reinforced Epoxy Composites | 10.1007/s10443-021-09910-1 |
2021-08-01 | In this study, we have designed and synthesized a low-bandgap polymer, DPP-Qx, using quinoxaline (Qx), a non-alkylated weak acceptor, with diketopyrrolopyrrole (DPP) as an electron donor. The incorporation of Qx into DPP leads to the highest occupied molecular orbital level at −5.1 eV with a narrow optical bandgap (1.2... | Low-Bandgap DPP-Based Quinoxaline with Extended EQE and Low Energy Loss for Efficient Polymer Solar Cells | 10.1007/s11664-021-08868-x |
2021-08-01 | In Latin America, default assumptions and borrowed templates and methodologies are often used in energy modeling, resulting in models that might not represent their cultural context and leading to policies awkwardly fit to local practices. Policy-driving low-income housing studies in Mexico, for example, activated both... | The impact of cultural assumptions on simulated energy, comfort, and investment returns of design decisions in two desert climates | 10.1007/s12273-020-0718-y |
2021-08-01 | Abstract The influence of structural inhomogeneity on a superconducting gap near d -wave nodes is co-nsidered for optimally doped YBa 2 Cu 3 O 6.92 HTSCs. To this aim, specific heat in the temperature range of T = 2‒10 K at magnetic fields H = 0–9 T is analyzed for a series of fine-crystalline samples with different de... | Formation of Fermi Arcs at T
$$ \ll $$
Tc in the Vicinity of d-Wave Nodes of Structurally Inhomogeneous YBa2Cu3O6.92 HTSCs | 10.1134/S1063783421080187 |
2021-08-01 | Regucalcin (RGN) is a calcium-binding protein mainly expressed in the liver. It functions in regulating activities of several calcium-dependent enzymes related to energy metabolism, antioxidant mechanisms, and apoptotic pathways. Previous proteomics analyses revealed downregulation of regucalcin in milkfish livers when... | Hypothermal effects on expression of regucalcin, a calcium-binding protein, in the livers of seawater- and fresh water–acclimated milkfish, Chanos chanos | 10.1007/s10695-021-00960-7 |
2021-08-01 | Abstract Some results of studying the unoccupied electron states and the formation of a boundary potential barrier during the thermal vacuum deposition of ultrathin 4-quaterphenyl oligophenyl films onto the surfaces of CdS and oxidized silicon were presented. Using X-ray photoelectron spectroscopy (XPS), the atomic Cd ... | Unoccupied Electron States of Ultrathin Quaterphenyl Films on the Surfaces of Layered CdS and Oxidized Silicon | 10.1134/S1063783421080138 |
2021-08-01 | This study aims to explore the feasibility of biochar as a carrier to improve the simultaneous removal of nitrogen and phosphorus in biological aerated filters (BAFs) for treating low C/N digested swine wastewater (DSW). Two similar BAFs (BAF-A with hydrophobic polypropylene resin as fillers and BAF-B with bamboo bioch... | Performances of simultaneous enhanced removal of nitrogen and phosphorus via biological aerated filter with biochar as fillers under low dissolved oxygen for digested swine wastewater treatment | 10.1007/s00449-021-02557-z |
2021-08-01 | This paper extensively studies the spacer technology, including low- k /high- k , single/dual dielectrics on the device performances focusing on the leakage current. The tactical use of a spacer, introduction of a low bandgap material as a pocket on the source side along with the incorporation of gate dielectrics helpe... | Improvising the Switching Ratio through Low-k / High-k Spacer and Dielectric Gate Stack in 3D FinFET - a Simulation Perspective | 10.1007/s12633-020-00618-8 |
2021-08-01 | Abstract Secondary and tertiary amines of the acetylene series of various structures (14 compounds) were synthesized based on propargylamine. The possibility of a significant inhibition with these substances of low-carbon steel corrosion in hot solutions of hydrochloric acid has been established. The protective effect ... | Substituted Propargylamines—Acid Corrosion Inhibitors for Steel in Petroleum Industry | 10.1134/S1070427221080103 |
2021-08-01 | Abstract Some types of the slot input of high energy into cylindrical and rectangular cavities are considered. The energy input through slot waveguiding apertures located at the central circle of the cavity is selected and optimized. The standing wave ratio of the system is determined. The change in the electrical fiel... | Study of Distribution of the Electric Field in a Plasma Chamber with Slot Input of Microwave Energy | 10.1134/S1063780X2108002X |
2021-08-01 | Reliable data on the effects of chronic prenatal exposure to low dose (LD) of ionizing radiation in humans are missing. There are concerns about adverse long-term effects that may persist throughout postnatal life of the offspring. Due to their slow cell cycle kinetics and life-long residence time in the organism, mese... | In vitro cellular and proteome assays identify Wnt pathway and CDKN2A-regulated senescence affected in mesenchymal stem cells from mice after a chronic LD gamma irradiation in utero | 10.1007/s00411-021-00925-7 |
2021-08-01 | This article discusses the absence of methods for measuring low-frequency (LF) fluctuation processes at high temperatures and proposes an original bridge method for measuring the spectra of LF current fluctuations in the tungsten filaments of electric lamps in the controlled temperature range 300–2700 K. The applicatio... | Bridge Method for Studying the Spectra of Current Fluctuations in Tungsten Filaments in the Frequency Range 1.5·10–5–5·10–1 Hz | 10.1007/s11018-021-01942-0 |
2021-08-01 | Mosques within the professional environments such as universities, banks and shopping malls possess different features that from the public mosques. These mosques are of relatively smaller size, less airy, populated for a shorter duration of the day and the visitors with more formal dressing. All these factors contribu... | Identification and control of the volatile organic compounds activity in confined environments (Mosques) | 10.1007/s11227-020-03599-y |
2021-08-01 | The ATP6ap2 (Pro)renin receptor protein associates with H + -ATPases which regulate organellar, cellular, and systemic acid–base homeostasis. In the kidney, ATP6ap2 colocalizes with H + -ATPases in various cell types including the cells of the proximal tubule. There, H + -ATPases are involved in receptor-mediated endoc... | The (pro)renin receptor (ATP6ap2) facilitates receptor-mediated endocytosis and lysosomal function in the renal proximal tubule | 10.1007/s00424-021-02598-z |
2021-08-01 | The biaxial accumulative plasticity and the biaxial non-proportional low-cycle fatigue crack growth behavior of a hull structure subjected to biaxial non-proportional low-cycle fatigue loading under phase differences of approximately 45°, 90°, and 180° were investigated in this study. Biaxial non-proportional low-cycle... | Analysis of Biaxial Non-Proportional Low-Cycle Fatigue Crack Propagation Behavior of Hull Plate with an Inclined Crack Based on Accumulative Plasticity | 10.1007/s11668-021-01179-7 |
2021-08-01 | This paper presents an imprecise predictive inference method for accelerated life testing. The method is largely nonparametric, with a basic parametric function to link different stress levels. The log-rank test is used to provide imprecision for the link function parameter, which in turn provides robustness in the res... | Imprecise inference based on the log-rank test for accelerated life testing | 10.1007/s00184-021-00807-4 |
2021-08-01 | Objective To correct for image distortions produced by standard Fourier reconstruction techniques on low field permanent magnet MRI systems with strong $${B}_{0}$$ B 0 inhomogeneity and gradient field nonlinearities. Materials and methods Conventional image distortion correction algorithms require accurate $${\Delta B}... | Image distortion correction for MRI in low field permanent magnet systems with strong B0 inhomogeneity and gradient field nonlinearities | 10.1007/s10334-021-00907-2 |
2021-08-01 | An in situ relationship between the deformation behavior characteristics and the spatial and temporal evolution of deformation field distributions is studied in flat samples of technically pure A7 aluminum under uniaxial tension. Using a VIC-3D digital optical system, the features of the deformation field evolution on ... | Relationships Between Characteristics of Deformation Behavior and Evolution of Deformation Fields in Aluminum Under Uniaxial Tension | 10.1007/s11182-021-02388-1 |
2021-08-01 | Abstract The trends in river runoff during the winter lower water period in the Ural River basin have been analyzed in this work. The long-term dynamics of the runoff parameters has been studied. Concurrently, consideration has been given to the phases with a different river water content. It was found that the water r... | Changes in River Runoff during Winter Low Water Periods in the Basin of the Ural River | 10.1134/S1028334X2108016X |
2021-08-01 | The effects of high pressure (100–500 MPa) and heated (80 °C, 25 min) combinations on gel properties, rheological characteristic and water distribution of pork batters were investigated. Compared to the only-heat, the cooking yield, a * value, hardness, cohesiveness, and chewiness of cooked pork batters treated less th... | Effects of high pressure and thermal combinations on gel properties and water distribution of pork batters | 10.1007/s13197-021-05051-2 |
2021-08-01 | Abstract The processes of structure formation during plasma hardening of samples made of 65G grade low-alloy structural steel have been studied using optical metallography. It is shown that the structure formation during quenching after exposure to a highly concentrated energy flux obeys general structure formation fea... | Structure Formation under Plasma-Assisted Hardening of Thin-Walled Low-Weight Parts | 10.3103/S0967091221080064 |
2021-08-01 | A phase frequency detector (PFD) with a very low dead zone is proposed which is based on a configuration adaptable to both CMOS or carbon nano-tube transistors (CNTFETs). In the first step the proposed configuration is designed using CMOS transistors, and then CNTFETs are substituted to improve the speed and reduce the... | Low-power high-speed phase frequency detector based on carbon nano-tube field effect transistors | 10.1007/s10470-021-01845-8 |
2021-08-01 | Abstract The endangered and declining butterfly species Colias myrmidone is sensitive to land-use changes and vulnerable in its immature stages. The requirements for its larval habitats are still largely unknown, which hinders appropriate management in protected areas. We examined the relation between the larval develo... | Preserving Colias myrmidone in European cultural landscapes: requirements for the successful development from egg to higher larval stages at a Natura 2000 site in Romania | 10.1007/s10841-021-00332-9 |
2021-08-01 | In this study, the effect of external treatment conditions [i.e., heat treatment conditions, storage conditions, pH, and high-intensity ultrasound (HIU)] on the stability of low-density lipoprotein (LDL) in egg yolk plasma modified by phospholipase A 2 (PLA 2 ) was studied. Asymmetrical flow field-flow fractionation (A... | Investigation on the stability of low‐density lipoproteins modified by phospholipase A2 using asymmetrical flow field‐flow fractionation | 10.1007/s11694-021-00918-6 |
2021-08-01 | This study aimed to investigate the effects of balneological outpatient treatment (hydrotherapy and peloidotherapy) on clinical status and serum cytokine levels in patients with chronic low back pain (CLBP). Seventy-four patients with CLBP who accepted to participate to the study were randomly divided into two groups. ... | Effects of balneological outpatient treatment on clinical parameters and serum cytokine levels in patients with chronic low back pain: a single-blind randomized controlled trial | 10.1007/s00484-021-02109-w |
2021-08-01 | Ultrafiltration and Diafiltration processes are used to concentrate proteins present in defatted milk in order to manufacture milk protein concentrate (MPC) powders. Selective passage of the water-soluble components causes retention as well as concentration of colloidal milk components in these processes. Increase in c... | Production and characterization of cow milk based low-protein milk protein concentrate (MPC) powders | 10.1007/s13197-020-04824-5 |
2021-08-01 | Recently, the technology has evolved towards artificial intelligence world which include IoT (Internet of Things) and IoE (Internet of Everything) as communication between machines or between devices is possible. The development of these systems today requires electronic components capable of generating higher power an... | Design and Optimization of LNA Amplifier Based on HEMT GaN for X-Band Wireless-Communication and IoT Applications | 10.1007/s12633-020-00626-8 |
2021-08-01 | The Belt and Road Initiative (BRI) has promoted the deployment of renewable energy to achieve sustainability. It is essential to reveal the influence of renewable energy on low-carbon economic development. The share of renewable energy consumption (SREC) is taken as the core explanatory variable in this paper, and its ... | Exploring the effect of renewable energy on low-carbon sustainable development in the Belt and Road Initiative countries: evidence from the spatial-temporal perspective | 10.1007/s11356-021-13611-4 |
2021-08-01 | Laparoscopic cholecystectomy (LC) is a common surgical procedure in acute cholecystitis (AC). Patients often suffer from considerable postoperative pain and indigestion, which prolongs in-hospital stay. The enhanced recovery after surgery (ERAS) program has proven its efficacy in elective surgery and could hypothetical... | Modified enhanced recovery after surgery protocol in patients with acute cholecystitis: efficacy, safety and feasibility. Multicenter randomized control study | 10.1007/s13304-021-01031-5 |
2021-08-01 | In seismic data processing, low-frequency random noise with non-Gaussian and non-stationary characteristics heavily contaminates the reflected signals in Tarim area, which brings great difficulties in interpretation of seismic records in northwest China. To achieve more satisfied resolution, more greater fidelity, toge... | A SNR Enhancement Method for Desert Seismic Data: Simplified Low-Rank Selection in Time–Frequency Decomposition Domain | 10.1007/s00024-021-02789-w |
2021-08-01 | Low-permeability media such as clay appear in nearly all hydrogeological systems. To date, although significant efforts have been put forward by hydrologists, transport mechanism is still not well understood in such media, especially in an aquifer-aquitard system. In this study, two-dimensional experiments of groundwat... | Laboratory observations for two-dimensional solute transport in an aquifer-aquitard system | 10.1007/s11356-021-13123-1 |
2021-08-01 | Background Mesenchymal stem cell-based therapy is known to have the potential to induce angiogenesis. However, there are still some limitations regarding their clinical application. Photomodulation/photobiomodulation is non-invasive and non-toxic phototherapy able to stimulate cell viability, proliferation, differentia... | The Effect of Photobiomodulation on Human Mesenchymal Cells: A Literature Review | 10.1007/s00266-021-02173-y |
2021-08-01 | In the chlorophyll biosynthesis pathway, the 8-vinyl group of the chlorophyll precursor is reduced to an ethyl group by 8-vinyl reductase. Two isozymes of 8-vinyl reductase have been described in oxygenic photosynthetic organisms: one encoded by BciA and another by BciB . Only BciB contains an [Fe-S] cluster and most c... | Distribution and functional analysis of the two types of 8-vinyl reductase involved in chlorophyll biosynthesis in marine cyanobacteria | 10.1007/s00203-021-02348-w |
2021-08-01 | Niedertemperatur-Wärme- und Kältenetze (NT-WK-Netze) sind innovative Ansätze zur Deckung des Wärme- und Kältebedarfs insbesondere in städtischen Gebieten. Fernwärmesysteme stehen vor einem Übergang zu sinkenden Netztemperaturen und zeitgleich auch vor einem Übergang zu einem Anstieg der Nutzung erneuerbarer Energien au... | Niedertemperatur-Wärme- und Kältenetze für denkmalgeschützte Bestandsgebäude mit industrieller Abwärme und Geothermie | 10.1007/s00502-021-00896-z |
2021-08-01 | Self-organization, physicochemical properties (specific electrical conductivity, surface tension), UV absorption, and fluorescence of aqueous herbicide compositions based on N -(phosphonomethyl)glycine and plant growth regulator succinic acid (SA) were studied in a range of herbicide concentrations of 1·10 −19 −1·10 −1... | Physicochemical and biological properties of aqueous herbicide compositions based on N-(phosphonomethyl)glycine and succinic acid in a range of low concentrations | 10.1007/s11172-021-3245-9 |
2021-07-29 | Poor soil chemical fertility and climate change restrict pearl millet grain yield in Niger Republic. Apart from the seedball technology, which targets majorly early phosphorus supply to the plants, the recommended practices of mineral fertilization and seed treatments (coating and priming) are barely affordable to the ... | Sanitized human urine (Oga) as a fertilizer auto-innovation from women farmers in Niger | 10.1007/s13593-021-00675-2 |
2021-07-27 | Herein, a KFeS 2 whisker was formed in mass production at a low temperature, with waste cold-rolling sludge as Fe source, which exhibited good performance in the removal of Zn/Ni from real electroplating effluent. At laboratory scale, KFeS 2 was generated at 80 °C by the hydrothermal method, and KFeS 2 whisker grew rad... | Low-temperature conversion of Fe-rich sludge to KFeS2 whisker: a new flocculant synthesis from laboratory scale to pilot scale | 10.1186/s42834-021-00098-4 |
2021-07-27 | Background Many lower-limb exoskeletons have been developed to assist gait, exhibiting a large range of control methods. The goal of this paper is to review and classify these control strategies, that determine how these devices interact with the user. Methods In addition to covering the recent publications on the cont... | Review of control strategies for lower-limb exoskeletons to assist gait | 10.1186/s12984-021-00906-3 |
2021-07-24 | Salinity drops in estuaries after heavy rains are expected to increase in frequency and intensity over the next decades, with physiological and ecological consequences for the inhabitant organisms. It was investigated whether low salinity stress increases predation risk on three relevant commercial bivalves in Europe. ... | Predation risk increases in estuarine bivalves stressed by low salinity | 10.1007/s00227-021-03942-8 |
2021-07-23 | In the past decade, therapeutic hypothermia using a variety of low-cost devices has been widely implemented in India and other low-and middle-income countries (LMIC) without adequate evidence of either safety or efficacy. The recently reported data from the world’s largest cooling trial (HELIX - hypothermia for encepha... | Rise and Fall of Therapeutic Hypothermia in Low-Resource Settings: Lessons from the HELIX Trial | 10.1007/s12098-021-03861-y |
2021-07-23 | A new inter-cluster DC capacitor voltage balancing scheme for a delta connected modular multilevel cascaded converter (MMCC)-based static synchronous compensator (STATCOM) is presented. A detailed power flow analysis of applying negative sequence current (NSC) and zero-sequence current (ZSC) injection methods in addres... | Inter-cluster voltage balancing control of a delta connected modular multilevel cascaded converter under unbalanced grid voltage | 10.1186/s41601-021-00203-0 |
2021-07-20 | Previous observational analyses have shown a declining rainfall trend over Israel, mostly statistically insignificant. The current study, for the period 1975–2020, undermines these findings, and the alarming future projections, and elaborates other ingredients of the rain regime. No trend is found for the annual rainfa... | Recent changes in the rain regime over the Mediterranean climate region of Israel | 10.1007/s10584-021-03161-6 |
2021-07-19 | The Salawusu aquifer in the Ordos coalfield is characterized by large thickness and water abundance. Most wells built in such water-rich sand layers are constructed by artificial freezing method. After thawing of the frozen wall, the original crack in the shaft wall gradually expands, penetrates, and even cracks becaus... | Properties and field application of the grouting material for water blocking during thawing of frozen wall of deep sand layer | 10.1007/s12517-021-07826-5 |
2021-07-17 | Dynamic changes in growth characteristics and endogenous hormone contents in the leaves and roots of Sophora davidii seedlings under low-phosphorus stress were studied to provide a reference for further study of the internal regulatory mechanism of the response strategy of this species to low-phosphorus stress. Normal ... | Response of growth characteristics and endogenous hormones of Sophora davidii to low-phosphorus stress | 10.1007/s11738-021-03284-4 |
2021-07-15 | Background This study aimed to compare the clinical efficacy of digital subtraction angiography (DSA) combined arterial thrombectomy versus simple arterial thrombectomy in the treatment of acute lower limb ischemia (ALI). Methods This retrospective cohort study collected the clinical data from 124 patients (128 affecte... | Comparison of digital subtraction angiography combined arterial thrombectomy versus simple arterial thrombectomy in the treatment of acute lower limb ischemia | 10.1186/s12893-021-01297-x |
2021-07-14 | Background and objective Recently, dietary restriction of fermentable carbohydrates (a low-FODMAP diet) in combination with a gluten-free diet (GFD) has been proposed to reduce the symptoms in irritable bowel syndrome (IBS) patients. Different studies reported that IBS has been associated with dysbiosis in the gut micr... | Influence of low FODMAP-gluten free diet on gut microbiota alterations and symptom severity in Iranian patients with irritable bowel syndrome | 10.1186/s12876-021-01868-5 |
2021-07-14 | Along with the development and construction of new roads, a significant percentage of the existing road network also need reconstruction and renovation to sustain the momentum of the economic growth of any developing country like India. Role of state agencies involved in road maintenance, assessment and monitoring of p... | Low cost ultrasonic roughometer for pavement roughness measurement | 10.1007/s41062-021-00521-0 |
2021-07-13 | Background The combination of imaging and therapeutic agents in the same smart nanoparticle is a promising option to perform a minimally invasive imaging guided therapy. In this study, Low density lipoproteins (LDL), one of the most attractive biodegradable and biocompatible nanoparticles, were used for the simultaneou... | LDL mediated delivery of Paclitaxel and MRI imaging probes for personalized medicine applications | 10.1186/s12951-021-00955-9 |
2021-07-13 | Objective To investigate the impact of microecological preparation combined with modified low-carbon diet on the glucolipid metabolism and cardiovascular complication in obese patients. Methods From August 2017 to July 2020, 66 obese patients were recruited, and administrated with an modified low-carbon diet with (grou... | Microecological preparation combined with an modified low-carbon diet improves glucolipid metabolism and cardiovascular complication in obese patients | 10.1186/s13098-021-00697-6 |
2021-07-09 | Background Recently, pine wood nematode (PWN, Bursaphelenchus xylophilus ) has been found in the extreme cold area of northeast China. The third-stage dispersal juvenile (DJ3) of PWN, which is a long-lived stress-resistant stage, plays an important role in the process of PWN spreading to low-temperature areas, as this ... | Trehalose in pine wood nematode participates in DJ3 formation and confers resistance to low-temperature stress | 10.1186/s12864-021-07839-0 |
2021-07-08 | Background Microbial contamination of edible low moisture food poses a significant public health risk for human. In this study, the microbial quality of sweet dehulled sesame seed croquettes, salted dehulled sesame seed and the raw sesame seed, sold under ambient conditions were examined. The samples were collected in ... | Assessment of the sanitary quality of ready to eat sesame, a low moisture street food from Burkina Faso | 10.1186/s12866-021-02269-0 |
2021-07-07 | Carbonate rocks are important targets of hydrocarbon exploration in the Gucheng area, Tarim Basin. In this study, the thin sections, carbon and oxygen isotopes, trace elements and rare earth elements of 25 carbonate samples from the Upper Cambrian and the Ordovician are conducted to research the original sedimentary en... | Geochemical characteristics of carbonates and indicative significance of the sedimentary environment based on carbon-oxygen isotopes, trace elements and rare earth elements: case study of the Lower Paleozoic carbonates in the Gucheng area, Tarim Basin, China | 10.1007/s12517-021-07574-6 |
2021-07-06 | Abstract Abandoned roadways of coal mines are suitable for compressed air energy storage after proper treatment with grouting reinforcement and concrete lining. According to the theoretical analysis, the rock mass and concrete lining will experience cyclic tensile stress in the air injection-withdrawal process which is... | Experimental investigation and viscoelastic-plastic model for sandstone under cyclic tensile stress | 10.1007/s40948-021-00272-3 |
2021-07-03 | Elastomeric nanostructures are normally expected to fulfill an explicit mechanical role and therefore their mechanical properties are pivotal to affect material performance. Their versatile applications demand a thorough understanding of the mechanical properties. In particular, the time dependent mechanical response o... | Quantitative Nanomechanical Mapping of Polyolefin Elastomer at Nanoscale with Atomic Force Microscopy | 10.1186/s11671-021-03568-1 |
2021-07-03 | Background The heterogeneous subtypes and stages of epithelial ovarian cancer (EOC) differ in their biological features, invasiveness, and response to chemotherapy, but the transcriptional regulators causing their differences remain nebulous. Methods In this study, we compared high-grade serous ovarian cancers (HGSOCs)... | Differential gene expression identifies a transcriptional regulatory network involving ER-alpha and PITX1 in invasive epithelial ovarian cancer | 10.1186/s12885-021-08276-8 |
2021-07-02 | Background The co-transformation of solid waste of natural and anthropogenic origin can be carried out through solid-state-fermentation systems to obtain bio-products with higher added value and lower environmental impact. Methods To evaluate the effect of Pleurotus ostreatus on co-transformation of oxo-degradable low-... | Evaluation of two microcosm systems for co-treatment of LDPEoxo and lignocellulosic biomass for biochar production | 10.1186/s40824-021-00222-w |
2021-07-02 | Background Maternal and newborn mortality is high immediately after childbirth and up to 42 days postnatally despite the availability of interventions. Postnatal care is crucial in preventing mortality and improving the health of women and newborns. This prospective cohort study investigated the initiation and utilizat... | Late initiation and low utilization of postnatal care services among women in the rural setting in Northwest Tanzania: a community-based study using a mixed method approach | 10.1186/s12913-021-06695-8 |
2021-07-01 | To optimize the structure of the burner, improve the combustion performance, and reduce the emission of NO x , a self-circulating low NO x combustion technology was used to design a new type of flue gas self-circulating low NO x burner. Based on previous research on the numerical model of combustion and the composition... | Effects of Optimized Operating Parameters on Combustion Characteristics and NOx Emissions of a Burner based on Orthogonal Analysis | 10.1007/s11630-020-1347-6 |
2021-07-01 | Fracture resistance of low- and medium-carbon steels depending on type of microstructure (ferritepearlite, bainite, and martensite) and its volume fraction is studied. On the basis of studying the temperature dependence for impact strength of V-notched samples and pre-cracked specimens the contribution of work for crac... | Effect of High Strength Structural Steel Structural State on Fracture Resistance | 10.1007/s11015-021-01167-0 |
2021-07-01 | Abstract One of the applications of construction low-carbon 22K steels (AISI 1022 type) is used as a material for the body of a core catcher (CC) for nuclear power plants with water-cooled reactors (WCRs). In the event of a severe beyond design-basis accident, the CC vessel will be under conditions of prolonged high-te... | Influence of Long-Term High-Temperature Action on the Impact Toughness of the Base Metal and the Weld Metal of the 22K Steel Welded Joint | 10.3103/S0967091221070068 |
2021-07-01 | In order to solve the problems due to the thickening of drilling fluids at low temperatures caused by the use of high-molecular-weight polymer coating agents in offshore deep-sea oil and gas drilling, a low-molecular-weight polymer coating agent named PADA was synthesized with acrylamide, methacryloxyethyltrimethyl amm... | Experimental investigation of a low-molecular-weight polymer coating agent for deep-sea oil and gas drilling | 10.1007/s13202-021-01198-y |
2021-07-01 | Aqueous Zn-based energy-storage devices have aroused much interest in recent years. However, uncontrollable dendrite growth in the Zn anode significantly limits their cycle life. Moreover, the poor low-temperature performance arising from the freezing of aqueous electrolytes at sub-zero temperatures restricts their pra... | Fabricating low-temperature-tolerant and durable Zn-ion capacitors via modulation of co-solvent molecular interaction and cation solvation | 10.1007/s40843-020-1570-5 |
2021-07-01 | Application of bio-based diisocyanates with low volatility instead petrochemical diisocyanates has positive impact on environment by reduction of hazardous effects on living organisms and lead to bio-based polyurethanes (bio-PUs) with good usage properties. This work was focused on the synthesis and chosen properties e... | Eco-friendly Route for Thermoplastic Polyurethane Elastomers with Bio-based Hard Segments Composed of Bio-glycol and Mixtures of Aromatic–Aliphatic and Aliphatic–Aliphatic Diisocyanate | 10.1007/s10924-020-01992-5 |
2021-07-01 | In recent years, the excess discharge of ammonia nitrogen from wastewater into surface water has been regulated by more stringent standard. The air stripping method is successfully used to treatment of high-concentration ammonia nitrogen; however, alkali will be added to keep pH more than 10, which is costly and not en... | Significant removal of ammonia nitrogen in low concentration from aqueous solution at low pH by advanced air stripping | 10.1007/s11356-021-13164-6 |
2021-07-01 | Copolymers and blends of polyhedral oligomeric silsesquioxane (POSS) and polyimides have been shown to resist atomic-oxygen (AO) attack, making them promising candidates as space-durable materials in the harsh oxidizing environment of low Earth orbit (LEO). CORIN ® is a commercially available and colorless POSS–polyimi... | POSS-enhanced colorless organic/inorganic nanocomposite (CORIN®) for atomic oxygen resistance in low earth orbit | 10.1007/s12567-021-00347-7 |
2021-07-01 | Abstract A mold steel for plastic injection was subjected to low cycle fatigue (LCF) tests at temperatures of 25, 200, and 250 °C. LCF tests were carried out at a total strain amplitude ( Δε t /2) from 0.004 to 0.012 under a constant strain rate of 0.01 s –1 . Transmission electron microscope images showed that cyclic ... | Effects of Test Temperature on Low Cycle Fatigue Behaviors in Large Mold Steel | 10.1007/s12540-020-00760-3 |
2021-07-01 | Experience of structure development, manufacture, and testing of a pneumatic pressure shell accumulator with a volume of 25 dm 3 is presented. A binder composition for “cold” hardening based on ÉD-20 epoxy resin and Étal-23X cycloaliphatic amine is developed. In terms of rheological and physicomechanical properties the... | Development of a Polymer Composite Material with an Epoxy Binder for Producing a High-Pressure Cylinder | 10.1007/s10556-021-00940-x |
2021-07-01 | Recently, the modification of bituminous binders is an ongoing trend. However, most current analytical methods are insufficient to characterize bitumen. Generally, standardized laboratory techniques are often time and cost consuming. Moreover, they use one-purpose devices requiring a considerable amount of samples and ... | Using various thermal analytical methods for bitumen characterization | 10.1007/s42947-020-0157-2 |
2021-07-01 | In this study, LaFeO 3 photocatalyst had been synthesized via a gel combustion method using glucose and citric acid as dual chelating agents. Furthermore, the effect of different calcination temperatures (400 °C, 500 °C and 600 °C) on the physicochemical properties of the synthesized LaFeO 3 were also investigated. Fro... | Impacts of Annealing Temperature on Morphological, Optical and Photocatalytic Properties of Gel-Combustion-Derived LaFeO3 Nanoparticles | 10.1007/s13369-020-04874-z |
2021-07-01 | In this study, a low-temperature planar solid electrolyte oxygen generator (SEOG) based on a (Bi 1.50 Y 0.50 ) 0.98 Zr 0.04 O 3+δ (BYO)/Bi 1.71 Nb 0.25 Ba 0.04 O 3+δ (BBNO) dual-layer electrolyte membrane was developed. The SEOG device consisted of a Ag (10 µm)/BBNO (13 µm)/BYO (710 µm)/BBNO (13 µm)/Ag (10 µm) cell san... | Low-Temperature Planar Oxygen Generator with (Bi1.50Y0.50)0.98Zr0.04O3+δ/Bi1.71Nb0.25Ba0.04O3+δ Dual-Layer Electrolyte Membrane | 10.1007/s11664-021-08874-z |
2021-07-01 | To long-term immobilization of secondary iodine-waste, iodine loaded silver-coated silica-gel (AgIs), glass-powder was used to directly solidify AgIs at low temperature. B 2 O 3 -Bi 2 O 3 -ZnO-SiO 2 was used as raw materials to manufacture the glass-matrix under different temperature. The samples with the richest glass... | Direct immobilization of iodine-loaded silver-coated silica gel with silicate glass powders at low temperature | 10.1007/s10967-021-07765-1 |
2021-07-01 | The influence of finish rolling and accelerated cooling stages on structure and property formation for low-manganese steel under laboratory conditions is studied. Rolling ends at temperatures in both the γ-region and at various temperatures in the γ + α -region. Accelerated cooling completion temperature is varied in... | Formation of Structure and Properties of Low-Carbon Pipe Steel with Ultralow Manganese Content during Thermomechanical Treatment | 10.1007/s11015-021-01180-3 |
2021-07-01 | Temperature control is a critical factor in PCR for efficient DNA amplification. The main aim is to achieve tight control and high rate of heating and cooling for a portable, cost-effective PCR device. This speed depends on reduction of the thermal mass of the PCR heating part. The common methods used to decrease the d... | New cost effective design of PCR heating cycler system using Peltier plate without the conventional heating block | 10.1007/s12206-021-0646-5 |
2021-07-01 | Purpose This paper aims to review the evidence comparing low-speed drilling without irrigation versus conventional drilling for dental implant osteotomy preparation. Materials and methods A systematic review was carried out based on the PRISMA statement. Four databases and gray literature were searched up to November 2... | Low-speed drilling without irrigation versus conventional drilling for dental implant osteotomy preparation: a systematic review | 10.1007/s00784-021-03939-z |
2021-07-01 | In this study, wire arc additive manufacturing process is employed to fabricate a low-carbon low-alloy steel block, using an ER70S-6 solid wire. Three sets of samples with different orientations, including perpendicular (Vertical), parallel (Horizontal), and 45° (45-degree) relative to the deposition plane, were prepar... | On Microstructure and Mechanical Properties of a Low-Carbon Low-Alloy Steel Block Fabricated by Wire Arc Additive Manufacturing | 10.1007/s11665-021-05568-9 |
2021-07-01 | In this study, the low cycle fatigue behavior and failure mechanism of WAAM 16MND5 bainitic steel, which is commonly used in the nuclear reactor, were investigated thoroughly via a series of strain-controlled and stress-controlled low cycle fatigue tests. Results show that the microstructure of WAAM 16MND5 steel is gra... | Low Cycle Fatigue Behavior and Failure Mechanism of Wire Arc Additive Manufacturing 16MND5 Bainitic Steel | 10.1007/s11665-021-05554-1 |
2021-07-01 | Abstract Chloroplast ultrastructural changes were investigated in chilling-sensitive (cucumber, Cucumis sativus L.) and cold-tolerant (winter rye, Secale cereale L.) plants during low-temperature hardening. Cold hardening was found to shorten the total length of thylakoid membranes in chloroplasts of both species by 20... | Ultrastructural Changes in Chloroplasts of Cucumis sativus L. and Secale cereale L. during Low-Temperature Hardening | 10.1134/S1021443721040130 |
2021-07-01 | In this work, a novel approach of leaching valuable metals, such as niobium, yttrium and cerium, from a niobium-bearing ore of low grade by roasting KHSO 4 –H 2 SO 4 system was experimentally studied. Through the work, the effects of roasting temperature, roasting time, mass ratio of agents to ore and the types of leac... | A novel approach to extract Nb, Y and Ce from a niobium-bearing ore of low grade by roasting KHSO4–H2SO4 system | 10.1007/s12598-020-01435-z |
2021-07-01 | The main aim of our paper is to analyze the influence of temperature and service time on the fracture resistance of welded joint constituents for new and exploited low-alloyed A-387Gr.B steel (Cr–Mo type) under the action of dynamic load and changes in the mechanical properties. The exploited parent metal, as a part of... | Influence of Temperature and Operation Time on the Fatigue Strength and Microstructure of Welded Joints of A-387Gr.B Steel | 10.1007/s11003-021-00518-1 |
2021-07-01 | Abstract Nanocrystalline ceramic samples of the ZrO 2 –3 mol % Y 2 O 3 composition with varying degrees of tetragonality c / a (1.4337 and 1.0425) are obtained. The process of the low-temperature degradation of ceramics is studied by the methods of X-ray phase analysis and electron microscopy. It is found that samples ... | Obtaining ZrO2–3 mol % Y2O3 Ceramics with Various Degrees of Tetragonality and Studying Low Temperature Degradation | 10.1134/S108765962104009X |
2021-07-01 | Abstract This work is aimed at developing homogeneous, uniformly distributed fine-crystalline coatings based on triclinic octacalcium phosphate pentahydrate (OCP, Ca 8 H 2 (PO 4 ) 6 ⋅5H 2 O) on the surface of ceramic substrates made of hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ). The process of the crystalline layer o... | Coatings of Low-Temperature Calcium Phosphates on Hydroxyapatite Ceramic | 10.1134/S207511332104016X |
2021-07-01 | Abstract Characteristics of organosilicon sealant of VGO-1 brand, which is employed in the preparation of glue-welded joints through contact welding are considered. Preparation conditions of glue-welded joints are given and it is determined that there is a decrease in the magnitude of welding current and an increase in... | Evaluation of Frost Resistance of Organosilicon Sealant at Ultralow Temperatures | 10.1134/S1995421221030138 |
2021-07-01 | The rational design of polymer acceptors with strong and broad absorption is critical to improve photovoltaic performance. In this work, a new polymer acceptor PY9-T based on heptacyclic benzotriazole (Y9-C16) as a building block and thiophene unit as the linking unit was synthesized, which exhibited a low bandgap (1.3... | A new low-bandgap polymer acceptor based on benzotriazole for efficient all-polymer solar cells | 10.1007/s11771-021-4741-7 |
2021-07-01 | Abstract — This article presents the experimental results of wear resistance of elastomeric composites based on butadiene–nitrile rubber BNKS-18 containing hollow corundum microspheres HCM-S and HCM-L at +22°C and –34°C. It has been demonstrated that introduction of the corundum microspheres into the rubber mixture lea... | The Features of Abrasive Wear of Elastomeric Composite with Corundum Microspheres at Low Temperatures | 10.3103/S1068366621040115 |
2021-07-01 | The structure of copper species, dispersed on nanostructured ceria (particles, rods and cubes), was analyzed by scanning transmission electron microscopy (STEM) and X-ray photoelectron spectroscopy (XPS). It was interestingly found that the density of surface oxygen vacancies (or defect sites), induced by the shape of ... | Atomically dispersed copper species on ceria for the low-temperature water-gas shift reaction | 10.1007/s11426-020-9867-x |
2021-07-01 | Abstract The practical aspect of nanotechnology includes the production of devices and their components needed to create, process and manipulate atoms, molecules and nanoparticles. The phenomena of aging and self-heating significantly affect the operation of microelectronic circuits. This paper developed a model of a t... | Low Power Analogue-Digital Converter Model | 10.3103/S1068337221030178 |
2021-07-01 | Abstract The cooling of rock formations when extracting heat by a borehole heat exchanger and the restoration of the thermal field in the rock during the idle time of the well have been investigated. The heat in the rock during the summer downtime of the well is partially restored due to the influx of heat from the out... | A Hybrid Solar–Geothermal Heat- and Hot-Water Supply System | 10.1134/S0040601521050025 |
2021-07-01 | Concerning the increased market for bio-based materials and environmentally safe practices, cellulose-based beads are one of the more attractive alternatives. Thus, this work focuses on the generation of functional cellulose-based beads with a relatively simple and direct method of blending a pre-modified chitosan bear... | Simple functionalization of cellulose beads with pre-propargylated chitosan for clickable scaffold substrates | 10.1007/s10570-021-03905-8 |
2021-07-01 | Abstract A mathematical model of oxygen–methane plasma combustion at pressures of 0.2−1.6 MPa has been developed with allowance for the ionization of combustion products and recombination of charged components. Positive ion concentrations in characteristic zones of the reacting oxygen–methane mixture are estimated unde... | Features of Intrinsic Electric Field Formation in Low-Temperature Oxygen–Methane Plasma | 10.1134/S1063785021050278 |
2021-07-01 | Growing evidence has suggested the feasibility and effectiveness of blood coagulation with low temperature plasma (LTP) at atmospheric pressure. In the present study we examined morphological changes and contents released out from platelet after LTP treatment to investigate the mechanism of LTP accelerate blood coagula... | Low Temperature Plasma Treatment of Rat Blood is Accompanied by Platelet Aggregation | 10.1007/s11090-021-10176-5 |
2021-07-01 | The microstructure and corrosion behavior of friction stir (FS) welded API X-60 pipeline steel were investigated. Three FS welds were successfully fabricated under various welding conditions using a tungsten carbide-base tool. It was found that the microstructure and corrosion performance of the welds were strongly aff... | Microstructure and Corrosion Properties of Friction Stir-Welded High-Strength Low -Alloy Steel | 10.1007/s12666-021-02219-4 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.