mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Adsorption of Re(VII) by coated solvent-impregnated resins containing Alamine 304-1 from sulfuric acid solutions

The recovery of rhenium from waste acid is an urgent issue due to low rhenium concentration and high sulfuric acidity.To solve the problem,novel coated solvent-impregnated resins consisting of inert resins LS-300,Alamine 304-1 and the PVA film (304-CSIRs) were prepared for the separation of Re(VII) from high sulfuric acid solutions.It was shown that the PVA film coated completely on the surfaces of LS-300 resins with a thickness of 5 µm,and Alamine 304-1 distributed completely inside the porous of LS-300 resins.The adsorption fitted well with Langmuir model and pseudo-second-order model with the saturation adsorption capacity of 139.40 mg·g~(-1).The maximum separation factor of Re(VII) versus Cu (II) was up to 483,and 304-CSIRs had no adsorptions for As(V).The adsorption capacity of Re(VII) onto 304-CSIRs maintained in 97.79% at the fifth adsorption-desorption cycle.99.87% of rhenium was recovered by 304-CSIRs from waste acid generated from a copper smelter.
Solid-state batteries:from fundamental interface characterization to realize sustainable promise

The highly conductive solid-state electrolytes (SSEs) have led to great progress in the development of all-solid-state batteries (ASSBs);however,there are obstacles to their application such as poor interfacial stability,scalability challenges,production safety and sustainability of ASSBs which still demand prompt solution.In Nature Nanotechnology,Tan and colleagues summarize solutions to overcome some major fundamental obstacles faced by the ASSB community,as well as potential strategies toward a sustainable ASSB recycling model.
NaV_3O_8/poly(3,4-ethylenedioxythiophene) composites as high-rate and long-lifespan cathode materials for reversible sodium storage

Sodium-ion batteries have received a surge of interests for the alternatives to lithium-ion batteries due to their abundant reserves and low cost.The quest of reliable and high-performance cathode materials is crucial to future Na storage technologies.Herein,poly(3,4-ethylene-dioxythiophene) (PEDOT) was successfully introduced to NaV_3O_8 via in situ oxidation polymerization,which can effectively enhance electron conductivity and ionic diffusion of NaV_3O_8 material.As a result,these NaV_3O_8@-PEDOT composites exhibit a significantly improved electrochemical performance including cycle stability and rate performance.In particular,NaV_3O_8@20 wt% PEDOT composite demonstrates better dispersibility and lower charge transfer resistance compared with bare NaV_3O_8,which delivers the first discharge capacity of 142 mAh·g~(-1) and holds about 128.7 mAh·g~(-1) after 300 cycles at a current density of 120 mA·g~(-1).Even at a high current density of 300 mA·g~(-1),a high reversible capacity of 99.6 mAh·g~(-1) is revealed.All these consequences suggest that NaV_3O_8@20 wt% PEDOT composite may be a promising candidate to serve as a high-rate and long-lifespan cathode material for sodium-ion batteries.
Synthesis and enhanced luminescence properties of double perovskite NaLa_(0.95-x)Y_xEu_(0.05)MgWO_6 phosphors

Double perovskite Na(La,Y)MgWO_6:Eu~(3+) phosphors were obtained by the sol-gel method.X-ray diffractometer (XRD) patterns,scanning electron microscopy (SEM) images and photoluminescence properties were carried out to study the effect of polyethylene glycol (PEG).Enhanced optical properties were obtained by adding 3 wt% PEG under the excitation of 395 nm.Y~(3+) with smaller radius was selected to substitute La~(3+) in this host to decrease the symmetry and further enhance the luminescence properties.With Y~(3+)concentration increasing,Na_2WO_4 and Y_(30)W_8O_(69) phases came up.The emission spectra showed different shapes,and the emission intensity was enhanced by doping Y~(3+).Under the excitation of 395 and 465 nm,the emission intensity reached the maximum.The Commission Internationale de L'Eclairage (CIE) coordinates of the phosphors were on the edge of the CIE diagram,illustrating that this double perovskite phosphor showed good color purity.Above luminescence properties showed that the synthesized phosphors had great potential in solid-state lighting.
Enhancing photothermal CO_2 catalysis by thermal insulating substrates

Understanding the role of heat transfer between catalysts and substrates is important for enhancing photothermal CO_2 catalysis.Herein,we investigate the effect of different substrates,including silicon wafers,glass slides and copper plates,on the photothermal catalytic performance of commercial Ni catalysts.The highest CO_2 conversion rate and CO selectivity are observed in the catalyst film on the glass substrate,and this can be traced to a reduced catalyst-to-substrate heat transfer that increases the catalyst temperature under illumination.Our study reveals the important role of thermal management between catalysts and substrates in photothermal catalysis and sheds light on reactor design for efficient solar-to-chemical energy conversions.
Self-templated nitrogen-doped mesoporous carbon decorated with double transition-metal active sites for enhanced oxygen electrode catalysis

The development of high-performance,low-cost bifunctional catalysts with long-term stability for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is one of the most critical challenges for the large-scale application of metal–air batteries.Herein,we report an advanced nitrogen-doped mesoporous carbon (NMC) composite (NiCo_2O_4/CoN_x-NMC) formed from a mixture of Co-and Ni-hydroxide-infiltrated phenolic resin and melamine resin.This composite exhibits superior electrocatalytic activity,stability,and selectivity for the ORR and OER.The activity parameter (DE),which is an indicator of the overall catalytic activity of bifunctional catalysts,was 0.76 V for NiCo_2O_4/CoN_x–NMC.Therefore,catalyst outperforms the majority of previously reported non-precious metal-based bifunctional electrocatalysts.The remarkable ultra-high catalytic performance of NiCo_2O_4/CoN_x–NMC for the ORR and OER can be attributed to the presence of different active sites of the CoN_x structure and the formation of NiCo_2O_4 with the spinel structure,which was obtained by a stepwise pyrolysis process.This synthesis strategy opens a new avenue for the rational design of highly active bifunctional electrocatalysts.
Two-dimensional gersiloxenes with tunable band gap as new photocatalysts

Designing highly efficient and stable photocatalysts is of vital importance for solar-to-fuel conversion,as a potential strategy to address the concerns of global energy crisis and environmental deterioration.The development of novel photocatalytic materials is desirable to overcome those shortcomings of traditional semiconductor photocatalysts.Feng and colleagues report in Nature Communications that two-dimensional gersiloxenes have great potential for photocatalytic H_2 evolution and CO_2 photoreduction.
Fabrication of titanium nitride nanoparticles onto carbon nanotubes by atomic layer deposition for utilization as Pt electrocatalyst supports

Because of its good stability and conductivity,titanium nitride (TiN) is considered to be a very promising alternative support for Pt catalyst;however,the preparation of TiN supports is still challenging.In this work,atomic layer deposition was facilely adopted to fabricate TiN nanoparticles onto carbon nanotubes (CNTs),and then the prepared TiN/CNTs hybrid was used as a support of Pt catalyst.The resulting TiN/CNTs-supported Pt nanoparticles (Pt@TiN/CNTs) nanocomposite showed higher catalytic activity and long-term stability toward the oxygen reduction reaction than the commercial Pt/C,which should be due to the high conductivity and high stability of TiN support,as well as the favorable Pt–TiN strong interaction.
Realizing high performance of solid-state lithium metal batteries by flexible ceramic/polymer hybrid solid electrolyte

Ceramic electrolytes(CEs)and solid polymer electrolytes(SPEs)are considered to be effective methods to suppress the growth of lithium dendrites.But the inferior wettability of CEs and the low ionic conductivity of SPEs limit their applications.Zhang and colleagues report in Advanced Materials that flexible ceramic/polymer hybrid solid electrolyte- prepared by in situ coupling reaction-has great promise for high-performance Li metal batteries(LMBs).
Microalloying Al alloys with Sc: a review

As a kind of important light alloys,the Al alloys exhibit mechanical properties that are closely related to the microstructures.Changing the main alloying elements and adjusting heat treatments are usually approaches to tune the microstructure and hence artificially control the mechanical properties.However,the windows for the two approaches have become quite narrow,after extensive studies in the last half of century.Microalloying has become the most promising strategy to further modify the microstructure and improve the mechanical properties of Al alloys,among which the element of scandium (Sc) is especially powerful.In this paper,the recent progresses in Al alloys microalloyed with Sc are briefly reviewed,focusing on the microstructural characterization,strengthening response,and underlying mechanisms.The possible key research points are also proposed for the further development of Al alloys microalloyed with Sc and other rare earth elements.
滇东北山区无人机遥感影像预处理方法及滑坡特征识别研究

滇东北地区是云南省滑坡多发地区,已发生过多起大型灾害性滑坡。利用遥感影像对滑坡的活动性、发生发展过程进行监测是减轻其灾害的重要手段之一。无人机遥感技术在获取滑坡灾害遥感数据过程中具有快速、灵活、成本低及获取的遥感影像时空分辨率高于卫星遥感数据等优势,因此在滑坡监测、灾害损失评估等研究中已被广泛使用。但在地形高差巨大、切割强烈、峡谷纵横的山区,无人机在获取影像过程中通常都会受到地形、局地环流、气流的严重影响,获取的无人机影像常常存在模糊、曝光不足、阴影区较大、畸变强烈等问题,同时影像拼接过程还会存在匹配误差,匹配错位的现象。质量不高的无人机遥感影像无法满足对滑坡特征、活动性、危险性等识别和判断。因此,研究如何通过影像处理的方法对无人机原始影像进行预处理,以获取深切峡谷山区满足工作需要的高质量无人机影像成为开展滑坡等地质灾害监测和研究的关键。
Numerical Study of the High-Frequency Wave Loads and Ringing Response of A Bottom-Hinged Vertical Cylinder in Focused Waves

This paper presents a numerical study on the high-frequency wave loads and ringing response of offshore wind turbine foundations exposed to moderately steep transient water waves. Input wave groups are generated by the technique of frequency-focusing, and the numerical simulation of focused waves is based on the NewWave model and a Fourier time-stepping procedure. The proposed model is validated by comparison with the published laboratory data. In respect of both the wave elevations and the underlying water particle kinematics, the numerical results are in excellent agreement with the experimental data. Furthermore, the local evolution of power spectra and the transfer of energy into higher frequencies can be clearly identified. Then the generalized FNV theory and Rainey’s model are applied respectively to calculate the nonlinear wave loads on a bottom-hinged vertical cylinder in focused waves. Resonant ringing response excited by the nonlinear high-frequency wave loads is found in the numerical simulation when frequency ratios (natural frequency of the structure to peak frequency of wave spectra) are equal to 3–5. Dynamic amplification factor of ringing response is also investigated for different dynamic properties (natural frequency and damping ratio) of the structure.
儿童多系统炎症综合征的临床研究现状与防治方向

儿童多系统炎症综合征于2020年4月首先由英国儿科医生报道,患儿的临床表现类似川崎病且合并多器官功能损伤。该病多见于6~15岁,黑种人和白种人为主,部分患儿2019新型冠状病毒(2019-nCoV)核酸或血清学抗体检测呈阳性结果,或曾与2019-nCoV感染者有密切接触。发病机制尚不清楚,可能与2019-nCoV感染后引起的异常免疫反应相关。经过以抗炎药物为主的综合治疗后整体预后良好。应继续对儿童2019-nCoV感染常态化防控,推进儿童多系统炎症综合征的基础和临床研究,加强宣传教育,提高我国儿科医生对该病的认识。
虚拟现实技术在病理尸检实验教学中的应用

病理尸检是一门实践性很强的病理实验课程。但是由于尸源较少及学生尸检技术不熟练,无法大规模在学生中开展。虚拟现实技术作为一种新型实验模式,通过在计算机上模拟真实的尸检实验场景,学生可以随时在计算机终端进行尸检操作,从而弥补上述条件的局限性,有利于尸检的开展。上海交通大学医学院病理学系构建了以尸检案例为内容的尸检操作及考查提问等形式的虚拟现实的实验课程,增强了课程理论与实践的结合,完善了病理学实验教学模块,提高了病理学实验的教学质量。
Synthesis, Crystal Structure and Magnetic Properties of Two Ribbon-shaped Chalcogenidometalate Complexes (Butyl-Sn)_4S_8M_2(TEPA)_2 (M = Mn, Ni)

Under solvothermal conditions, two ribbon-shaped chalcogenidometalate coordination compounds, (butyl-Sn)4S8M2(TEPA)2 (M = Mn (1), Ni (2), TEPA = tetraethylenepentamine), have been synthesized and characterized by elemental analysis, energy dispersive X-ray, infrared/ultraviolet-visible spectroscopy, thermogravimetric analysis, single-crystal and powder X-ray diffraction. Complexes 1 and 2 crystallize in the triclinic space group P1 with a = 13.999(3), b = 14.658(4), c = 16.150(4) A, α = 68.78(3)°, β = 69.12(3)°, γ = 72.07(3)°, V = 2825.0(14) A3, Z = 2, Mr = 1448.28, μ = 2.503 mm~(-1), F(000) = 1444, GOOF = 1.001, R = 0.0629 and wR = 0.1286 for 12855 observed reflections with I > 2σ(I) for 1; and a = 11.029(3), b = 11.858(2), c = 11.888(3) A, α = 87.27(2)°, β = 69.10(2)°, γ = 83.63(2)°, V = 1443.6(6) A3, Z = 1, Mr = 1455.78, μ = 2.660 mm~(-1), F(000) = 728, GOOF = 1.017, R = 0.0464 and wR = 0.1185 for 9267 observed reflections with I > 2σ(I) for 2, respectively. Both 1 and 2 are composed of linear hexamer {Sn4M2} (M = Mn for 1, and Ni for 2) with 8 μ_2-S~2- bridges and 2 TEPA terminal ligands. Despite the quite large inter-paramagnetic-cation spacing (d_(Mn-S-Sn-S-Sn-S-Sn-S-Sn-S-Mn) = 13.485 A, d_(Ni-S-Sn-S-Sn-S-Sn-S-Sn-S-Ni) = 14.078 A), two samples exhibit distinct ferromagnetic-like behaviors with the intradimer coupling constant (J) and Weiss (θ) values up to 6.8 cm~(-1) and 8.5 K for 1 and 17.2 cm~(-1) and 21.1 K for 2 calculated from the temperature dependence of the magnetic susceptibility.
Interface-reconstruction Forming Bifunctional (Li_xTM_(1-x))O Rock-salt Shell for Enhanced Cyclability in Li-rich Layered Oxide

Poor cycling stability, as a long-standing issue, has greatly hindered the commercial application of Li-rich layered oxide cathodes in high-energy-density Li-ion batteries. NiO-type rock-salt phase is commonly considered electrochemically inert but stable. Herein, an ultrathin (Li_xTM_(1-x))O rock-salt shell was in situ constructed at the particle surface during the synthesis of Li-rich layered oxide cathodes through a unique soft chemical quenching method. Comprehensive structural/chemical analysis reveals that, it not only inherits the chemical stability of traditional NiO-type rock-salt phase, but also facilitates Li~+ diffusion due to the co-occupancy of Li~+ and TM cations. Such a bifunctional shell could efficiently prevent TM dissolution and oxygen evolution during the long-term cycling, eventually leading to the enhanced cycling stability for Li-rich layered oxides (92.7% of capacity retention after 200 cycles at 0.5C). It provides new guidance to design and synthesize new Li-rich layered oxides with the excellent cycling stability through utilizing some electrochemically-inert phases.
儿童原发性大网膜扭转5例的临床分析

本研究回顾性分析5例儿童原发性大网膜扭转患儿的临床资料,结果表明,根据临床特征及典型的彩超和CT影像学特点,大多数病例是可以明确诊断的,并可以选择保守治疗方式。
Molecular structure and phylogenetic analyses of the complete chloroplast genomes of three original species of Pyrrosiae Folium

Pyrrosia petiolosa, Pyrrosia lingua and Pyrrosia sheareri are recorded as original plants of Pyrrosiae Folium (PF) and commonly used as Chinese herbal medicines. Due to the similar morphological features of PF and its adulterants, common DNA barcodes cannot accurately distinguish PF species. Knowledge of the chloroplast (cp) genome is widely used in species identification, molecular marker and phylogenetic analyses. Herein, we determined the complete cp genomes of three original species of PF via highthroughput sequencing technologies. The three cp genomes exhibited a typical quadripartite structure with sizes ranging from 158 165 to 163 026 bp. The cp genomes of P. petiolosa and P. lingua encoded 130 genes, whilst that of P. sheareri encoded 131 genes. The complete cp genomes were compared, and five highly divergent regions of petA-psbJ, matK-rps16, ndhC-trnM, psbM-petN and psaCndhE were screened as potential DNA barcodes for identification of Pyrrosia genus species. The phylogenetic tree we obtained indicated that P. petiolosa and P. lingua are clustered in a single clade and, thus, share a close relationship. This study provides invaluable information for further studies on the species identification, taxonomy and phylogeny of Pyrrosia genus species.
Hyperpycnal(over density)flows and deposits

A hyperpycnal flow forms when a relatively dense land-derived gravity flow enters into a marine or lacustrine water reservoir.As a consequence of its excess of density, the incoming flow plunges in coastal areas, generating a highly dynamic and often long-lived dense underflow.Depending on the characteristics of the parent flow(flow duration and flow rheology)and basin salinity, the resulting deposits(hyperpycnites)can be very variable.According to flow duration, land-derived gravity flows can be classified into short-lived or long-lived flows.Shortlived gravity flows last for minutes or hours, and are mostly related to small mountainous river discharges, alluvial fans, collapse of natural dams, landslides, volcanic eruptions, jokulhlaups, etc.Long-lived gravity flows last for days,weeks or even months, and are mostly associated with medium-to large-size river discharges.Concerning the rheology of the incoming flow, hyperpycnal flows can be initiated by non-Newtonian(cohesive debris flows), Newtonian supercritical(lahars, hyperconcentrated flows, and concentrated flows)or Newtonian subcritical flows(pebbly, sandy or muddy sediment-laden turbulent flows).Once plunged, non-Newtonian and Newtonian supercritical flows require steep slopes to accelerate, allow the incorporation of ambient water and develop flow transformations in order to evolve into a turbidity current and travel further basinward.Their resulting deposits are difficult to differentiate from those related to intrabasinal turbidites.On the contrary, long-lived Newtonian subcritical flows are capable of transferring huge volumes of sediment, freshwater and organic matter far from the coast even along gentle or flat slopes.In marine settings, the buoyant effect of interstitial freshwater in pebbly and sandy hyperpycnal flows can result in lofting due to flow density reversal.Since the excess of density in muddy hyperpycnal flows is provided by silt-clay sediments in turbulent suspension, lofting is not possible even in marine/saline basins.Muddy hyperpycnal flows can also erode the basin bottom during their travel basinward,allowing the incorporation and transfer of intrabasinal sediments and organic matter.Long-lived hyperpycnal flow deposits exhibit typical characteristics that allow a clear differentiation respect to those related to intrabasinal turbidites.Main features include(1)composite beds with gradual and recurrent changes in sediment grain-size and sedimentary structures,(2)mixture of extrabasinal and intrabasinal components,(3)internal and discontinuous erosional surfaces, and(4)lofting rhythmites in marine/saline basins.
Prediction on CO_2 uptake of recycled aggregate concrete

Carbonation of concrete is a process which absorbs carbon dioxide(CO_2). Recycled aggregate concrete(RAC) may own greater potential in CO_2 uptake due to the faster carbonation rate than natural aggregate concrete(NAC). A quantitative model was employed to predict the CO_2 uptake of RAC in this study. The carbonation of RAC and the specific surface area of recycled coarse aggregates(RCAs) were tested to verify accuracy of the quantitative model. Based on the verified model, results show that the CO_2 uptake capacity increases with the increase of RCA replacement percentage. The CO_2 uptake amount of 1 m~3 C30 RAC within 50 years is 10.6,13.8, 17.2, and 22.4 kg when the RCA replacement percentage is 30%,50%, 70%,and 100%,respectively. The CO_2 uptake by RCAs is remarkable and reaches 35.8%-64.3% of the total CO_2 uptake by RAC when the RCA storage time being 30 days. Considering the fact that the amount of old hardened cement paste in RCAs is limited, there is an upper limit for the CO_2 uptake of RCAs.
The use of Artificial Neural Networks to estimate seismic damage and derive vulnerability functions for traditional masonry

This paper discusses the adoption of Artificial Intelligence-based techniques to estimate seismic damage, not with the goal of replacing existing approaches, but as a mean to improve the precision of empirical methods. For such, damage data collected in the aftermath of the 1998 Azores earthquake(Portugal) is used to develop a comparative analysis between damage grades obtained resorting to a classic damage formulation and an innovative approach based on Artificial Neural Networks(ANNs). The analysis is carried out on the basis of a vulnerability index computed with a hybrid seismic vulnerability assessment methodology, which is subsequently used as input to both approaches. The results obtained are then compared with real post-earthquake damage observation and critically discussed taking into account the level of adjustment achieved by each approach. Finally, a computer routine that uses the ANN as an approximation function is developed and applied to derive a new vulnerability curve expression. In general terms, the ANN developed in this study allowed to obtain much better approximations than those achieved with the original vulnerability approach, which has revealed to be quite non-conservative. Similarly, the proposed vulnerability curve expression was found to provide a more accurate damage prediction than the traditional analytical expressions.
Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic hydrocarbons

The role of humic substance-associated persistent free radicals (PFRs) in the fate of organic contaminants under various redox conditions remains unknown.This study examined the characterization of original metal-free peat humin (HM),and HM treated with varying concentrations of H_2O_2 and L-ascorbic acid (VC) (assigned as H_2O_2-HM and VC-HM).The concentration of PFRs in HM increased with the addition of VC/H_2O_2 at concentrations less than 0.08 mol/L.The evolution of PFRs in HM under different environmental conditions (e.g.,oxic/anoxic and humidity) was investigated.Two types of PFRs were detected in HM:a relatively stable radical existed in the original sample,and the other type,which was generated by redox treatments,was relatively unstable.The spin densities of VC/H_2O_2-HM readily returned to the original value under relatively high humidity and oxic conditions.During this process,the HM-associated "unstable" free radicals released an electron to O_2,inducing the formation of reactive oxygen species (ROS,i.e.,·OH and ·O_2~-).The generated ROS promoted the degradation of polycyclic aromatic hydrocarbons based on the radical quenching measurements.The transformation rates followed the order naphthalene>phenanthrene>anthracene>benzo[a]pyrene.Our results provide valuable insight into the HM-induced transformation of organic contaminants under natural conditions.