mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
CuO nanoflowers/copper fiber felt integrated porous electrode for lithium-ion batteries

The structure of current collectors has significant effects on the performance of a lithium-ion battery (LIB).In this study,we use copper fiber felts made by multi-tooth cutting and high-temperature solid-phase sintering as the current collector for LIBs.An integrated porous electrode based on CuO nanoflowers/copper fiber felt is developed for the anode.Results suggest that the reversible capacity and cycle stability of this new anode are significantly improved,compared with the pristine bare-surface copper plate under the same condition of rate cycles.The new anode structure based on the copper-fiber felt with a porosity of 60% exhibits a higher performance with an initial specific capacity of 609.5 mAh g~(-1) and retains 486.1 mAh g~(-1) after 200 cycles at a current density of 0.5 C.The improved electrochemical performance of this electrode is attributed to its large surface area of CuO nanoflowers and porous structure of the copper fiber felt,due to enhanced contact between the active material of CuO nanoflowers and electrolyte.This pore-rich structure makes the electrolyte easy to permeate into the electrode,shortens the diffusion path of Li~+,reduces the internal resistance and alleviates the volume expansion of the active material during the insertion and desertion processes of Li~+.
Analysis of heat flow diagram of small-scale power generation system:Innovative approaches for improving techno-economic and ecological indices

In this paper,the heat flow diagram of steam turbine model K-6-35 has been analyzed for innovative approaches towards improving the techno-economic and ecological indices of the small-scale power generation system.The numerical analysis is performed using IPSEpro process simulation software based on heat balance method under four different cases.It was found that the study of Solar Assisted Power Generation (SAPG)system has important practical significance in power generation with minimum pollutants and maximum efficiency.Both fuel-saving (FS)and power-boosting (PB)operation modes of the SAPG system are considered.Various types of stand-alone solar thermal power plants exhibited very low overall efficiency with many ecological advantages compared to the conventional thermal power plant based on fossil fuels.Besides,SAPG system with FS mode presented higher techno-economic indices and operation performance.An important reduction in fuel consumption and pollutant emissions could be obtained with SAPG system.Considering the hourly,daily,monthly,and yearly amount of saved fuel and reduced pollutants in the whole power plant,the SAPG system with FS mode can largely contribute to high ecological indices power generation.A thermal efficiency increased by 1.31% with specific equivalent fuel consumption decreased by 22.54 g/kWh was obtained with SAPG system.The coal consumption was reduced by 4.75% when SAPG system operates in FS mode.
Comparative phosphoproteomic analysis of BR-defective mutant reveals a key role of GhSK13 in regulating cotton fiber development

Brassinosteroid (BR), a steroid phytohormone, whose signaling transduction pathways include a series of phosphorylation and dephosphorylation events, and GSK3s are the main negative regulator kinases. BRs have been shown to play vital roles in cotton fiber elongation. However, the underlying mechanism is still elusive. In this study, fibers of a BR-defective mutant Pagoda 1 (pag1), and its corresponding wild-type (ZM24) were selected for a comparative global phosphoproteome analysis at critical developmental time points: fast-growing stage (10 days after pollination (DPA)) and secondary cell wall synthesis stage (20 DPA). Based on the substrate characteristics of GSK3, 900 potential substrates were identified. Their GO and KEGG annotation results suggest that BR functions in fiber development by regulating GhSKs (GSK3s of Gossypium hirsutum L.) involved microtubule cytoskeleton organization, and pathways of glucose, sucrose and lipid metabolism. Further experimental results revealed that among the GhSK members identified, GhSK13 not only plays a role in BR signaling pathway, but also functions in developing fiber by respectively interacting with an AP2-like ethylene-responsive factor GhAP2L, a nuclear transcription factor Gh_DNF_YB19, and a homeodomain zipper member GhHDZ5. Overall, our phosphoproteomic research advances the understanding of fiber development controlled by BR signal pathways especially through GhSKs, and also offers numbers of target proteins for improving cotton fiber quality.
Allotransplantation of adult spinal cord tissues after complete transected spinal cord injury: long-term survival and functional recovery in canines

Spinal cord injury (SCI), especially complete transected SCI, leads to loss of cells and extracellular matrix and functional impairments. In a previous study, we transplanted adult spinal cord tissues (aSCTs) to replace lost tissues and facilitate recovery in a rat SCI model. However, rodents display considerable differences from human patients in the scale, anatomy and functions of spinal cord systems, and responses after injury. Thus, use of a large animal SCI model is required to examine the repair efficiency of potential therapeutic approaches. In this study, we transplanted allogenic aSCTs from adult dogs to the lesion area of canines after complete transection of the thoracic spinal cord, and investigated the long-term cell survival and functional recovery. To enhance repair efficiency, a growth factor cocktail was added during aSCT transplantation, providing a favorable microenvironment. The results showed that transplantation of aSCTs, in particular with the addition of growth factors, significantly improves locomotor function restoration and increases the number of neurofilament-, microtubule-associated protein 2-, 5-hydroxytryptamine-, choline acetyltransferase- and tyrosine hydroxylase-positive neurons in the lesion area at 6 months post-surgery. In addition, we demonstrated that donor neurons in aSCTs can survive for a long period after transplantation. This study showed for the first time that transplanting aSCTs combined with growth factor supplementation facilitates reconstruction of injured spinal cords, and consequently promotes long lasting motor function recovery in a large animal complete transected SCI model, and therefore could be considered as a possible therapeutic strategy in humans.
A non-structural protein encoded by Rice Dwarf Virus targets to the nucleus and chloroplast and inhibits local RNA silencing

RNA silencing is a potent antiviral mechanism in plants and animals. As a counter-defense, many viruses studied to date encode one or more viral suppressors of RNA silencing (VSR). In the latter case, how different VSRs encoded by a virus function in silencing remains to be fully understood. We previously showed that the nonstructural protein Pns10 of a Phytoreovirus, Rice dwarf virus (RDV), functions as a VSR. Here we present evidence that another nonstructural protein, Pns11, also functions as a VSR. While Pns10 was localized in the cytoplasm, Pns11 was localized both in the nucleus and chloroplasts. Pns11 has two bipartite nuclear localization signals (NLSs), which were required for nuclear as well as chloroplastic localization. The NLSs were also required for the silencing activities of Pns11. This is the first report that multiple VSRs encoded by a virus are localized in different subcellular compartments, and that a viral protein can be targeted to both the nucleus and chloroplast. These findings may have broad significance in studying the subcellular targeting of VSRs and other viral proteins in viral-host interactions.
Advanced transition metal/nitrogen/carbon-based electrocatalysts for fuel cell applications

The development of advanced transition metal/nitrogen/carbon-based (M/N/C) catalysts with high activity and extended durability for oxygen reduction reaction (ORR) is critical for platinum-group-metal (PGM) free fuel cells but still remains great challenging. In this review, we summarize the recent progress in two typical M/N/C catalysts (atomically dispersed metalnitrogen-carbon (M-N-C) catalysts and carbon-supported metal nanoparticles with N-doped carbon shells (M@NC)) with an emphasis on their potential applications in fuel cells. Starting with understanding the active sites in these two types of catalysts, the representative innovative strategies for enhancing their intrinsic activity and increasing the density of these sites are systematically introduced. The synergistic effects of M-N-C and M@NC are subsequently discussed for those M/N/C catalysts combining both of them. To translate the material-level catalyst performance into high-performance devices, we also include the recent progress in engineering the porous structure and durability of M/N/C catalysts towards efficient performance in fuel cell devices. From the viewpoint of industrial applications, the scale-up cost-effective synthesis of M/N/C catalysts has been lastly briefed. With this knowledge, the challenges and perspectives in designing advanced M/N/C catalysts for potential PGM-free fuel cells are proposed.
Intrinsically high efficiency sodium metal anode

Efficient plating/stripping of Na metal is critical to stable operation of any rechargeable Na metal battery. However, it is often overlooked or misunderstood in electrochemical measurements using thick Na electrodes with large excess of Na reserves. Herein, we report two crucial aspects, which have generally been ignored in previous studies, in the development of more practical capacity-controlled Na metal electrodes that can be efficiently cycled at 100% depth. We find that common carbonate electrolytes induce severe side reaction and highly irreversible Na plating/stripping, whereas ether electrolytes without any additive support thick Na metal electrodes operating at a high average Coulombic efficiency of 99.6% for over 300 cycles. We further show that to realize such high efficiency in thin Na metal electrodes, it is necessary to ensure strong adhesion between the thin Na layer and the Cu current collector, which we solve by introducing an Au interlayer. The resulting transferable thin Na metal electrodes enable high-energy-density, high-efficiency and reasonably stable-cycling Na||Na_3V_2(PO_4)_3 batteries.
三维分级结构的Ca_3Co_4O_9中空纤维网络作为高性能锂离子电池负极材料

锂离子电池的性能随着正极材料、负极材料和电解液的快速发展而不断提高.过渡金属氧化物(TMs)作为有前景的负极材料,具有高理论容量和低成本的优点.由于更高的锂离子嵌入电压,过渡金属氧化物也具有更高的安全性.其中,Co_3O_4具有较高的可逆理论比容量(896 mA h g~(-1)).但在充放电过程中,由于Co_3O_4粉化、电导率低、体积膨胀大,导致容量衰减较快和倍率性能较差.将低成本、环境友好的Ca离子取代部分Co离子可以形成C轴取向的层状氧化物Ca_3Co_4O_9.在英文全文中,采用静电纺丝与热处理结合的方法制备了由纳米片组装的三维分级结构的Ca_3Co_4O_9中空纤维网络,用于改善钴基氧化物负极材料的储锂性能.独特的分级中空纤维网络结构提供了更短的离子传输距离和更好的导电性,使材料具有良好的循环性能和倍率性能.实验通过不同扫速下的循环伏安曲线与电化学阻抗谱的测试证明了该材料具有优异的动力学特性.本工作提供了一种提高过渡金属氧化物负极材料储锂性能的普遍方法.
The first photometric investigation of the contact binary OQ Cam

The first charge-coupled device photometric light curves in B, V, R_c, and I_c bands of the shortperiod contact binary star OQ Cam are presented. Through analyzing the light curves with the Wilson-Devinney code, it is found that OQ Cam is a W-type shallow contact binary star with a contact degree of f =20.2%. Based on the O – C analyzing, the orbit period displays a long term increasing with a rate of dP/dt = 4.40×10~(–7) d yr~(–1). The increasing in orbit period can be interpreted by mass transfer from the less massive component to the more massive one. As the orbit period increases, OQ Cam would evolve from the present shallow contact configuration to a non-contact stage. So it may be a potential candidate to confirm the thermal relaxation oscillation theory.
Recent tectonic activity in Central Alborz Mountain, Iran: morphometric analysis and knickpoint identification

Alborz, as part of the Alpine-Himalayan orogeny belt, has been the result of the convergence of the Central Iranian and Eurasian plate since the late Triassic. The study area located in Central Alborz encompasses different Quaternary faults. Thus, the present study aimed to evaluate the effect of faults on river landforms through morphotectonic indices and the causes of knickpoints and knickzones in the Bedrock Rivers in part of Central Alborz. To this end, six morphometric indices such as longitudinal gradient (SL), hierarchical anomaly (Δa), the bifurcation index (R), hypsometric integral and hypsometric curve (Hi-Hc), relative relief (Bh), and basin shape (Bs) were calculated and analyzed in 38 sub-basins of the area. Finally, the area was divided into extremely high, high, medium, and low tectonic activity areas using the relative tectonic activity (IAT). Normalized steepness and concavity indices along with the longitudinal profiles of the streams were obtained using Matlab and Arc GIS software. Based on the findings, the existence of slope-break knickpoints at the mountain piedmont at the outlet of large rivers through active faults demonstrated that most of these landforms were created by movements along the main faults such as Khazar, Nusha, Soheil, Deylaman, Kashachal, representing high tectonic activity in the central and southern parts of the study area. However, the values of these indices were extremely low and indicated low tectonic activity in the northern parts located in the embayment part of the Caspian Sea. Finally, the findings revealed that these classes correspond well to the areas with landforms such as V-shaped and narrow valleys, gorges, deflected and offset streams, deformed Neogene, and Quaternary units that indicate the post-Neogene activity.
Obtaining morphometric variables from gullies using two methods of interpolation laser scanner data: the case study of Vassouras, Brazil

Gully erosion is a worldwide problem of land degradation and water quality, and it is also frequent in Brazil. Typically, anthropic influence is the major driver of gully evolution. To study and monitor gullies it is necessary to use specific instruments and methods to obtain accurate information. The objective of this study was to use Terrestrial Laser Scanning (TLS) to create digital elevation model (DEM) accurately and define morphometric variables that characterize gullies in a mountainous relief. Two different interpolations were evaluated using the Topogrid and GridSurfaceCreate algorithms to elaborate DEM. Topographic profile for gullies was used to assess modeling quality. The DEM of the Gully 1 (G1) from the Topogrid algorithm estimated soil loss of 49%, whereas the GridSurfaceCreate algorithm estimated a soil loss of 97%, in a period of 1 year. The estimated soil loss for the Gully 2 (G2) was 14% from the Topogrid, and 8% from the GridSurfaceCreate algorithm. The GridSurfaceCreate algorithm underestimated the volume to area ratio for G2 due to a failure on interpolating a region of low point representativity. The Topogrid algorithm represented better the terrain irregularities, as observed through the topographic profiles traced in three regions of G1 and G2. Statistical analysis showed that the GridSurfaceCreate algorithm presented lower accuracy in estimating elevations. The underestimation trend of this algorithm was also observed in G2. The gullies showed considerable soil losses, which may reduce the areas suitable for agricultural activities, and silting up of water courses. The Topogrid algorithm presented satisfactory results, denoting great potential to produce morphometric data of gullies.
Identifying ephemeral gullies from high-resolution images and DEMs using flow-directional detection

Ephemeral gullies, which are widely developed worldwide and threaten farmlands, have aroused a growing concern. Identifying and mapping gullies are generally considered prerequisites of gully erosion assessment. However, ephemeral gully mapping remains a challenge. In this study, we proposed a flow-directional detection for identifying ephemeral gullies from high-resolution images and digital elevation models (DEMs). Ephemeral gullies exhibit clear linear features in high-resolution images. An edge detection operator was initially used to identify linear features from high-resolution images. Then, according to gully erosion mechanism, the flow-directional detection was designed. Edge images obtained from edge detection and flow directions obtained from DEMs were used to implement the flow-directional detection that detects ephemeral gullies along the flow direction. Results from ten study areas in the Loess Plateau of China showed that ranges of precision, recall, and Fmeasure are 60.66%–90.47%, 65.74%–94.98%, and 63.10%–91.93%, respectively. The proposed method is flexible and can be used with various images and DEMs. However, analysis of the effect of DEM resolution and accuracy showed that DEM resolution only demonstrates a minor effect on the detection results. Conversely, DEM accuracy influences the detection result and is more important than the DEM resolution. The worse the vertical accuracy of DEM, the lower the performance of the flow-directional detection will be. This work is beneficial to research related to monitoring gully erosion and assessing soil loss.
Stability analysis of open-pit gold mine slopes and optimization of mining scheme in Inner Mongolia, China

The geological structure of the Changshanhao open-pit mine in Urad Middle Banner, Inner Mongolia, China is extremely complicated, and slope instability has frequently occurred in various forms, such as wedge sliding, bedding sliding, and toppling failure. In order to study the failure mechanisms of these slopes, the geological structure and mechanical rock properties were investigated based on field investigations and laboratory tests. Numerical models for the present mining area and final mining area of the original scheme were established to analyze slope stability. The results showed that the unique geomorphological characteristics of the mining area were generated by geological tectonism, and the north side of the stope is an anti-dip layered rock slope and the south side is a dip layered rock slope. Slope failure is the consequence of endogenic and exogenic integration, including physical and mechanical properties of the rock mass, geological structures such as faults and joints, and human-caused factors such as blasting and excavation disturbances. Then the original excavation scheme was redesigned mainly by optimizing the slope angle and decreasing the final mining depth to maintain slope stability. Finally, the Monte Carlo method was used to analyze the reliability of the slope angle optimization scheme. The open-pit mine excavation plan that meets the stability requirements was obtained eventually.
浙江省2015-2019年生殖道沙眼衣原体感染的流行特征与空间聚集性

生殖道沙眼衣原体感染是由沙眼衣原体引起的生殖器部位炎症为主要表现的性传播疾病。沙眼衣原体在生殖器官引起的感染对生殖健康影响较大,可促进传播艾滋病和增加宫颈癌的发病风险。为了解浙江省生殖道沙眼衣原体感染的流行特征与空间聚集性变化,制定更精准的防治措施,对2015-2019年报告病例数据进行分析,结果报告如下。
Applying Both Chemical Liquefaction and Enzymatic Catalysis Can Increase Production of Agaro- Oligosaccharides from Agarose

Red algae represents an important marine bioresource. One high-value utilization of red algae is the production of agarooligosaccharides which have many positive biological effects. However, the lack of an efficient production route seriously limits the application of agaro-oligosaccharides. In this study, we established a green route that combines chemical liquefaction and enzymatic catalysis for the efficient production of agaro-oligosaccharides, and we used the production of neoagarotetraose (NA4) as an example. Agarose (150 g L~(–1)) liquefaction by citric acid was controlled with respect to two targets: a 100% liquefaction rate and a high average degree of polymerization (> 4) of the liquesced agaro-oligosaccharides, which were then catalyzed by β-agarase into an oligosaccharides mixture with a high concentration of NA4 (30.8 g L~(–1)) in a 1-L reaction volume. After purification, we obtained 25.5 g of NA4 with a purity of 92%. This work establishes an easy route for the efficient production of pure agaro-oligosaccharides from agarose.
U-Pb Isotope Geochronology of Syntectonic Granites from Hainan Island, South China: Constraints on Tectonic Evolution of the Eastern Paleo-Tethys Ocean

Since the recognition of the Indosinian orogeny in northern Vietnam, Triassic orogens have been widely identified around the western and southwestern boundaries of the South China block. The paleo-Tethys sutures stretch from west to southeast, from Jinshajiang-Ailaoshan via NE Vietnam to Hainan Island; these sutures exhibit and develop voluminous Permian – early Triassic magmatism and numerous high-strain shear zones. As ophiolites related to the paleo-Tethys are lacking on Hainan Island, the eastward extension of the Indosinian orogeny and subduction and closure time of the paleo-Tethys Ocean on Hainan Island remain controversial. Here, an integrated kinematic and geochronological study has been conducted on two shear zones, called the Xiaomei and Mangsan shear zones. U-Pb zircon dating yields an age of early Triassic (252 – 251 Myr) for Xiaomei syntectonic granites which formed in the same tectonic setting and presented the similar nanoparticles to the Indosinian granites from Ailaoshan ductile shear zone, including the strawberry-like and flower-like nanoparticles. The NE-trending Mangsan shear zone represented by the gneissic granites with middle Permian ages (264 – 262 Myr) formed in the same tectonic setting as the Wuzhi-shan granites that were proposed as I-type granites. These middle Permian gneissic granites with arc affinity may represent an arc setting related to the NW subduction of the paleo-Tethys. The analyses reveal that granites with late Triassic ages (235 – 232 Myr) in the Xiaomei shear zone have the characteristics of A-type granites. The late Triassic extensional events on Hainan Island may be related to the subduction of the paleo-Pacific Plate beneath the East Asian continent.
Research on the Determinants of Government Investment Effect

Government investment plays an important role in promoting and guiding the economic and social development in China. Xinjiang is the core province of the Belt and Road and its economic growth is mainly driven by investment. This paper decomposes the determinants of government investment effect into economic structure change, technological change and investment structure change, using the non-competitive input-output table of Xinjiang province in 2007, 2012 and 2015 and structural decomposition analyses. The results show that, the government investment effect in Xinjiang shows a slight decline trend. During the period, the change of economic structure and investment structure have the negative impact on government investment effect, while the change of technology has the positive impact on government investment effect. In addition, these impacts have strong sectoral heterogeneity.
“三穴五针法”针刺对支气管哮喘大鼠Th17 /Treg免疫失衡的影响

目的从免疫调节作用探讨“三穴五针法”针刺对哮喘大鼠外周血Th17 /Treg的调节作用。方法30只SPF级雄性SD大鼠随机分为空白组、模型组和针刺组,每组各10只。取大鼠外周血单个核细胞,用流式细胞术检测CD_4~+ T淋巴细胞中CD_4~+ IL-17~+ Th17和CD4~+ CD25~+ Foxp3~+ Treg比例;以Western Blot法检测大鼠肺组织中Foxp3与STAT3蛋白表达水平。结果模型组中CD4~+ IL-17~+ Th17细胞比例显著升高( P < 0.05);模型组中Foxp3蛋白表达显著下降( P < 0.05),而STAT3蛋白表达显著升高( P < 0.05) 。针刺组中CD4~+ IL-17~+ Th17细胞比例呈下降趋势( P < 0.05);针刺组中Foxp3蛋白表达呈升高趋势( P < 0.05),而STAT3蛋白表达呈下降趋势( P < 0.05) 。结论“三穴五针法”针刺能显著抑制哮喘大鼠肺组织中STAT3蛋白的表达、促进FOXP3蛋白的表达,从而调节Th17 /Treg免疫失衡状态,达到治疗的目的。
基于层次分析权重系数的均匀设计法优选肉苁蓉的黑豆汁炮制工艺

目的优化黑豆汁制肉苁蓉的最佳炮制工艺。方法以黑豆汁的量、蒸制时间、浸泡时间为考察因素,以浸出物、松果菊苷、毛蕊花糖苷含量为指标,采用层次分析法确定权重系数U_5( 5~3 ),采用U_5( 5~3 )均匀设计法对黑豆汁制肉苁蓉的炮制工艺进行优选。结果黑豆汁制肉苁蓉的最佳炮制工艺为浸泡0.5h,加20%黑豆汁,蒸制6h。结论采用层次分析法确定权重系数可信;采用均匀设计法优选肉苁蓉的黑豆汁炮制工艺科学合理、可行。