mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Da-Cheng-Qi Decoction (大承气汤)Combined with Lactobacillus Acidophilus Improves Gastrointestinal Function of Traumatic Brain-Injured Model Mice

Objective: To investigate the effects of Da-Cheng-Qi Decoction (DCQD,大承气汤)combined with Lactobacillus acidophilus (LA) on the recovery of gastrointestinal (GI) function in traumatic brain-injured (TBI) mice. Methods: A total of 150 male C57BL/6 mice were randomly divided into sham-injury, normal saline (NS), DCQD (0.4 mL/day), LA (≥1×10~(10) cfu/day LA), DCQD+LA (LA administration at the same dosage after 4 h of feeding DCQD), and 1/2 DCQD+LA groups (LA administration at the same dosage after 4 h of feeding 1/2 DCQD dose) by a random number table, 5-8 mice in each group. The sever TBI model was constructed according to Feeney's enhanced gravitational forces of free falling. On days 1,3,and 7 post-TBI, plasma diamine oxidase (DAO) and D-lactic acid levels were assessed by enzyme-linked immunosorbent assay (ELISA). Occludin expression in the intestinal epithelium was assessed by Western blot analysis. Transmission electron microscopy (TEM) was used to observe the morphological changes in the network structure of interstitial cells of Cajal (ICC) and change of enteric nervous system-ICC-smooth muscle cell (ENS-ICC-SMC). Immunofluorescence staining was used to detect changes in the network structure of the ICC. Results: Compared with the NS group, occludin expression in the DCQD+LA group significantly increased on Day 1,3,and 7 post-TBI (P<0.05 or P<0.01). The concentration of DAO significantly decreased in the LA, DCQD, and DCQD+LA groups on Day 3 and 7, whilst the D-lactate concentrations in the LA and 1/2 DCQD+LA groups decreased on Day 1 and 3 post-injury (P<0.05 or P<0.01). The NS group experienced a great damage on the ENS-ICC-SMC network morphology and ICC network structure, and all treatment groups had some improvements, among which the DCQD+LA group presented relatively intact network morphology. Conclusions: DCQD combined with LA treatment could effectively repair the intestinal mucosal barrier and improve Gl motility in mice after TBI. The combination of DCQD and LA was more effective than their respective monotherapies.
基于AGV的棉桶搬运系统设计

棉桶作为纺织车间物料(即棉条)的载体,需要在多个加工工序之间来回搬运,传统搬运方式采用人工拖动装载棉条的可滚动棉桶,该方式存在效率低下、劳动强度大以及生产管理差等问题。介绍了应用AGV在梳棉机和并条机之间自动搬运棉桶,并对搬运系统进行了设计。
磁浮轨排铺设装备悬架参数研究

磁浮轨排铺设装备是一种铺设磁浮列车轨道的车辆设备,设备在运行时会受到轨道不平顺的影响从而产生振动,振动对设备运行时的平稳性和安全性有着直接的影响。根据设备实际行驶情况,建立了系统的动力学模型,首先对设备的悬架参数进行了分析,初步选定一组取值;其次对设备在随机不平顺激励下的振动进行了仿真分析,验证了悬架参数。结果表明,悬架参数取值c1=7×10~4N.s/m、k1=5×10~4N/m较为合理,设备的振动响应满足要求。
主动后轮转向汽车与转矩分配协调控制研究

为改善车辆操纵稳定性,基于线性车辆模型设计后轮转向控制器及车辆稳定控制器,提出一种主动后轮转向与转矩分配协调控制策略。搭建由驾驶员模型、七自由度车辆模型、后轮转向控制器及转矩分配等模块组成的“人-车-路”闭环控制系统,开展双移线仿真试验,并与同参数比例四轮转向车辆及前轮转向车辆仿真结果对比。结果表明:所提出的主动后轮转向与转矩分配协调控制控制效果最佳。在低附着路面表现更为明显,不仅使车身始终保持较好转向姿态,还有效改善了车辆的稳定性。
基于电流相角差的主动配电网故障定位方法研究

随着新能源的快速发展,导致大量的分布式电源接入到现有的配电网中,由于分布式电源出力的随机性使现有的配电网变成了一个复杂多变的主动配电网,这导致原有的故障定位方法因不具有自适应性而不再适用。为了解决这个问题,对主动配电网故障时的电流进行了分析。探索根据故障时的电流特性对主动配电网的故障定位进行可行性分析。通过研究电流相角在主动配电网故障前后的变化特性,得出其与故障发生的内在联系,并由此提出一种用于估算主动配电网故障定位的分析方法。该方法只需对电流信息进行测量,通过数据采集处理与判断完成故障定位。最后,通过仿真验证了该方法用于主动配电网故障定位的可行性。
髋关节镜下治疗髋臼盂唇钙化性疾病

[目的]探讨髋关节镜微创技术治疗髋关节盂唇钙化性疾病的临床疗效。[方法]共有6例患者入选本研究,入选病例术前均经X线片、CT、MRI诊断为髋关节盂唇部钙化。[结果] 6例患者均得到全程随访,术前患髋平均a角(56.24±10.76)°,5例a角>55°。术后髋关节功能改善明显,生活质量明显提高,术后6个月,患者VAS评分由术前平均(7.62±1.21)分降低到平均(1.83±1.12)分(P<0.05),Harris评分由术前(63.32±12.04)分增加到(86.16±8.47)分(P<0.05)。[结论]髋关节盂唇钙化极其罕见,病因未明,无特异性症状及体征,髋关节镜可通过微创治疗的方式,彻底清理病灶,缝合盂唇,有效提高患者生活质量。
外固定架治疗骨盆骨折的经验

[目的]探讨外固定支架对骨盆骨折患者生存率及愈后的作用。[方法] 2013年7月~2018年7月25例不同类型的骨盆骨折患者,分别采用单纯骨盆外固定治疗及骨盆外固定后期联合钢板内固定治疗。[结果]其中1例因损伤严重,经积极抗休克治疗无效死亡,25例患者中采用外固定治疗后,生存率为96.00%(24/25),随访8~18个月。末次随访按照Matta评分标准,优良率为87.50%(21/24)。[结论]骨盆骨折及早行骨盆外固定治疗,可以维持骨盆结构的稳定性,控制骨盆的容积,提高生存率,减缓疼痛,同时也为复杂严重的骨盆骨折(Tile B3及C型)后期的联合内固定治疗争取了时间,奠定了基础。
A 3D Supramolecular Cu(I)Compound Obtained by in situ Hydrolysis,Deaminization,Reduction and Self-assemble Reaction

A new Cu(I)coordination polymer,[Cu_4(MA)_2(HCA)_2]_n(1,MA = melamine,H_3CA = cyanuric acid),has been synthesized under hydrothermal conditions using CuCl_2·2H_2O and MA as the starting materials.Interestingly,cyanuric acid was obtained by the in situ hydrolysis and the deaminization of melamine,and the Cu(I)ion was obtained by the in situ reduction of Cu(II)ion during the self-assembly process.The crystal structure is of monoclinic,space group P_c with a = 3.539(3),b = 22.377(2),c = 15.844(1)A,β = 90.723(1)º,V = 1254.6(2)A~3,C_(12)H_(14)Cu_4N_(18)O_6,M_r = 760.61,Z = 2,D_c = 2.013 g/cm~3,F(000)= 752,μ = 3.426 mm~(-1),R = 0.0479 and wR = 0.1243 for 3172 observed reflections(I >2σ(I)).The crystal structural analysis revealed that the cooperation of coordinate-covalent bonds,intermolecular hydrogen bonds and π-π interactions give rise to a 3D supramolecular framework with 5-connected BN topology.Moreover,the thermal stability and luminescent property of 1 were also investigated.
Synthesis,Crystal Structures,and Binding Behaviors with CT-DNA/BSA,Antimicrobial and Cytotoxic Activities of Three New Pyrazine Acylhydrazones

Three new acylhydrazones containing pyrazine ring(C_(12)H_(11)N_5O_2·CH_3COOH,1;C_(13)H_(13)N_5O·2CH_3COOH,2;C_(13)H_(13)N_5O_3·C_(13)H_(13)N_5O_3,3)were synthesized and fully characterized.The single-crystal XRD indicated that both 1 and 2 crystallized in monoclinic,P2_1/c space group but 3 belonged to monoclinic,C2/c space group.The temperature of the maximum thermal decomposition peaks measured by thermogravimetry for 1~3 is 284,289 and 276 ℃ respectively,all showing better thermal stabilities.The interactions of 1~3 with calf thymus DNA(CT-DNA)and bovine serum albumin(BSA)were studied by UV-Vis absorption spectroscopy and fluorescence spectroscopy,respectively,presenting that 1~3 could bind to CT-DNA via groove binding mode and quench the fluorescence of BSA through static process.Moreover,molecular docking studies of the interactions between 1~3 with DNA/BSA were in good agreement with experimental results.From antimicrobial activities of 1~3 and gentamycin sulfate against Staphylococcus aureus,Escherichia coli and Salmonella typhimurium,it was inferred that 3 had generally stronger antibacterial activity than 1 and 2 and is more active against Staphylococcus aureus than gentamycin sulfate.The cytotoxic tests of 1~3 and etoposide on human lung cancer cells(A549)were carried out by using the MTT method.
The origin of sulfuryl-containing components in SEI from sulfate additives for stable cycling of ultrathin lithium metal anodes

In the light of wireless and non-fossil society based on portable electronics, electric vehicles, and smart grids, secondary batteries with higher energy density, faster charge, and safer operation are pursued persistently. Nowadays, commercial lithium (Li)-ion batteries have been practically applied in our daily life. However, the energy density of Li-ion batteries based on intercalation chemistry is approaching to the theoretical value due to the limited specific capacity of graphite anode (372 mA h g ~(-1)). In order to further improve the energy density of secondary batteries, Li metal anode was revisited owing to its extremely high theoretical specific capacity (3860 mA h g ~(-1)) and low reduction potential (-3.04 V vs. standard hydrogen electrode). Moreover, Li metal anode can be combined with different types of cathodes, such as intercalated cathodes (e.g., LiFePO_4 and LiNi_(0.5) Co_(0.2) Mn_(0.3) O_2 (NCM523)) and conversion cathodes (e.g., sulfur and oxygen) to construct various next-generation battery systems.
Sources and health risks of PM_(2.5) -bound polychlorinated biphenyls(PCBs) and organochlorine pesticides(OCPs) in a North China rural area

Polychlorinated biphenyls(PCBs) and organochlorine pesticides(OCPs) are typical persistent organic pollutants(POPs), which have high toxicity, bioaccumulation and long-distance transfer capability.Daily variation, sources of PCBs and OCPs in PM_(2.5) are rarely explored in polluted rural area.Here, the sources and health risks of the PCBs and OCPs were evaluated for 48 PM_(2.5) samples collected in winter 2017 in Wangdu, a heavy polluted rural area in the North China Plain.The average diurnal and nocturnal concentrations of ∑18 PCBs and ∑15 OCPs were 1.74-24.37 and 1.77-100.49, 11.67-408.81 and 16.89-865.60 pg/m~3, respectively.Hexa-CBs and penta-CBs accounted for higher proportions(29.0% and 33.6%) of clean and polluted samples, respectively.Hexachlorobenzene(HCB) was the dominant contributor to OCPs with an average concentration of 116.17 pg/m~3.Hexachlorocyclohexane( ∑HCHs) and dichlorodiphenyltrichloroethane( ∑DDTs) were the other two main classes in OCPs with the average concentrations of 4.33 and 15.89 pg/m~3, respectively.β -HCH and p,p' -DDE were the main degradation products of HCHs and DDTs, respectively.The principal component analysis and characteristic ratio method indicated both waste incineration and industrial activities were the main sources of PCBs, contributing 76.8% and 12.7%, respectively.The loadings of OCPs were attributed to their application characteristics and the characteristic ratio method reflected a current or past use of OCPs.Health risk assessment showed that the respiratory exposure quantity of doxin-like PCBs(DL-PCBs) and the lifetime cancer risk from airborne OCPs exposure was negligible, while the other exposure modes may pose a risk to human bodies.
Equivalent point estimation for small target groups tracking based on maximum group likelihood estimation

Dear editor,Small target groups(STG),such as insect/bird flocks and drone groups,have become new threats to civil aviation and urban security.With the advantages of long range and alltime/all-weather operation capability,radar is one of the most suitable technologies for STG detection and tracking.However,because of the special group motion characteristics(orderly as a whole and flexibly as individuals),traditional algorithms,such as multiple target tracking(MTT)and centroid/formation group tracking(CGT/FGT),may suffer from problems of high resource scheduling pressure and poor adaptability.Therefore,it is necessary to investigate some new techniques for tracking STG of dynamic contour.
Molecular Design of N,S Dual-doped Carbon Nanowalls Attached on Graphene Sheets as an Efficient Sulfur Reservoir

Li-S batteries have garnered unprecedent interests by virtue of the attractive advantages of S cathode,including high capacity and high reserves.However,the associated insulativity of S and unavoidable polysulfide(PS)intermediates shuttling during cycling have been significantly challenging the future commercialization of Li-S batteries.To date,various strategies,with a mainstream principle managing to confine S species with host materials,have been frequently evaluated to circumvent these obstinate issues.Among the proposed host materials,graphene-based materials,one class of most appealing derivates of carbons,are deemed to hold great prospect due to their 2D laminar structure with good conductivity,high specific surface area,and prominent mechanical properties.Currently,optimizing the nanostructure and morphology of graphene-based materials still remains a technological problem,especially for their intractable agglomerations and nonpolar surfaces.
Pressure-Dependent Phonon Scattering of Layered GaSe Prepared by Mechanical Exfoliation

Few-layered gallium selenide (GaSe) is obtained by using the mechanical exfoliation method, and its properties are characterized by photoluminescence and Raman spectroscopy. The pressure-dependent phonon scatterings of bulk, few-layered, oxidized few-layered GaSe are characterized up to 30GPa by using a diamond anvil cell with inert argon used as the pressure transmission medium. All the GaSe samples processed a phase transition around 28GPa. A new vibration mode at 250 cm~(-1) is found in oxidized few-layered GaSe by Raman spectra, which is indexed as the Raman vibration mode of α-Se.
Superconductivity at the Normal Metal/Dirac Semimetal Cd_3As_2 Interface

We investigate the interface between a three-dimensional Dirac semimetal Cd_3As_2 and a normal metal via softpoint contact spectroscopy measurement.The superconducting gap features were detected below 3.8K and 7.1K in the case of Cd_3As_2 single crystals sputter-coated with the Pt and Au films,respectively,in the differential conductance dl/dV -V plots of the point contacts.As the applied magnetic field increased,the drop in the zerobias contact resistance shifted toward lower temperatures.The topologically non-trivial band structure of Cd_3As_2 is considered to play a crucial role in inducing the superconductivity.Apart from realizing superconductivity in topological materials,our creative approach can be used to investigate possible topological superconductivity and exhibits a high application potential in electronic devices.
Site Preference of Se and Te in Bi_2Se_(3-x)Te_x Thin Films

The ternary topological insulators Bi_2Se_(3-x)Te_x have attracted a great deal of attention due to their exotic physical and chemical properties.While most of the studies focus on the properties of these ternary TIs,limited research was performed to investigate the dynamic atomic stack of its crystal structure.We prepared highquality Bi_2Se_(3-x)Te_x thin films on GaAs(111)B substrates using molecular beam epitaxy,characterized with Raman spectroscopy,x-ray diffraction and photoelectron spectroscopy.It is found that when Se is replaced by Te,the preferred substituting sites are the middle layer at 0
Large Dynamical Axion Field in Topological Antiferromagnetic Insulator Mn_2Bi_2Te_5

The dynamical axion field is a new state of quantum matter where the magnetoelectric response couples strongly to its low-energy magnetic fluctuations.It is fundamentally different from an axion insulator with a static quantized magnetoelectric response.The dynamical axion field exhibits many exotic phenomena such as axionic polariton and axion instability.However,these effects have not been experimentally confirmed due to the lack of proper topological magnetic materials.Combining analytic models and first-principles calculations,here we predict a series of van der Waals layered Mn_2Bi_2Te_5-related topological antiferromagnetic materials that could host the long-sought dynamical axion field with a topological origin.We also show that a large dynamical axion field can be achieved in antiferromagnetic insulating states close to the topological phase transition.We further propose the optical and transport experiments to detect such a dynamical axion field.Our results could directly aid and facilitate the search for topological-origin large dynamical axion field in realistic materials.
Long-term high-resolution in vivo imaging of cerebral cortical structures following ischemic stroke

The development of multi-photon microscopic technique has made it possible to image submicron structures deep in biological tissues.This technique is widely used for imaging of cortical structures in developing and adult animals,and there have been detail descriptions of in vivo imaging of synaptic structures in normal animals through a thinned-skull or open-skull cranial window.However,several challenges should be considered carefully for high-resolution imaging of cortical structures under pathological conditions.Here we describe a protocol for in vivo imaging of dendritic structures following ischemic stroke through thinned skull.This protocol can also be applied for acute or chronic imaging of neuronal structural plasticity,glial activation,cerebral microcirculation,or synaptic functions in other pathological conditions.
路易斯酸熔融盐刻蚀: 一种制备MXene材料的普适方法

MXene,即二维过渡金属碳化物/氮化物/碳氮化物,是通过选择性刻蚀三元层状结构(P63/mmc)Mn+1AXn相前驱体中的A层原子所得到的新型二维材料,其中M代表过渡金属元素(钛、钒、铌等), A主要是第III~IV主族元素(铝、硅等), X是碳和/或氮. MXene材料凭借其独特的二维层状结构、高导电性(>10000 S/cm)和氧化还原活性,在电化学储能等诸多功能应用领域备受关注.例如, MXene材料具有优异的电容性能,在水系酸性电解液中的赝电容容量可达370 F/g及1500 F/cm~3,但MXene在水系电解液中的电压窗口小,故其能量密度不高.因此,为获得高能量、高功率的MXene基储能器件, MXene材料在非水系电解液中的有效应用甚为重要.
Measurement of viscoelastic properties of injured mouse brain after controlled cortical impact

Mechanical properties of brain tissue can provide vital information for understanding the mechanism of traumatic brain injury(TBI).As mouse models were commonly adopted for TBI studies,a method to produce injury to the brain and characterize the injured tissue is desired.In this paper,a complete workflow of TBI induction,sample preparation,and biomechanical characterization is presented for measurement of the injured brain tissue.A controlled cortical impact device was used to induce injury to the brain.By setting the angle,speed,and position of the impact,the level of brain injuries could be controlled.Viscoelastic properties of both injured and non-injured brain tissues were measured using a ramp-hold indentation test.Regions of interests(ROIs)were tested and compared to contralateral corresponding counterparts.Methods introduced in this paper could be easily extended to produce and test a variety of other injured soft biological tissues.
Vortex 4.0 on chip

The orbital angular momentum (OAM) of light has promising applications, ranging from information multiplexing and high-speed optical communication to computation. Dynamically tunable and switchable vortex microlasers combined with direct photocurrent detection of the topological charges of OAM states have paved unexplored routes for the development and integration of fourth-generation (4.0) vortex technology, potentially on chip.
Monitoring and assessment of underground climatic conditions using sensors and GIS tools

Monitoring and assessment of underground climatic conditions are necessary to identify potential hazards and initiate remedial measures in advance that otherwise would lead to disastrous conditions. This paper discusses the concept of real-time monitoring and assessment of climatic conditions in a typical underground mine using sensors and GIS tools by utilizing a laboratory scale model. Typical ventilation parameters including temperature, humidity, and gas concentrations were monitored using sensors in a laboratory setting and various ratios and indices proposed by previous researchers for interpreting fire gases and spontaneous combustion conditions are predicted from the monitored data. GIS tools were used to display this information in real-time on a mine map that would help in creating a safe and comfortable working environment for personnel and equipment working underground.
Discrete modeling of a longwall coal mine gob for CFD simulation

One area of concern in longwall coal mines is the active gob directly behind the longwall face, where high concentrations of methane are likely to accumulate and active roof caving occurs. Using computational fluid dynamics (CFD) to simulate gas flows in and through the gob, most researchers have represented the entire gob as a porous medium governed by Darcy’s law. However, Darcy-type porous flow may not be applicable for the highly porous and unconsolidated fringes of the gob. In addition, porous medium models do not allow for representative combustion modeling to simulate in-gob ignition and flame propagation. This study presents a hybrid approach to modeling the gob using CFD: the outer part of the gob is modeled as discrete objects that simulate coarse rock rubble, while the gob center is modeled as a porous medium.
Diesel and welding aerosols in an underground mine

Researchers from the National Institute for Occupational Safety and Health (NIOSH) conducted a study in an isolated zone of an underground mine to characterize aerosols generated by: (1) a diesel-powered personnel carrier vehicle operated over a simulated light-duty cycle and (2) the simulated repair of existing equipment using manual metal arc welding (MMAW). Both the diesel-powered vehicle and MMAW process contributed to concentrations of nano and ultrafine aerosols in the mine air. The welding process also contributed to aerosols with electrical mobility and aerodynamic mobility count median diameters of approximately 140 and 480 nm, respectively. The welding particles collected on the filters contained carbon, iron, manganese, calcium, and aluminum.
Experimental and measured research on three-dimensional deformation law of gas drainage borehole in coal seam

Using self-researched gas drainage borehole stability dynamic monitoring device,three-dimensional deformation characteristics of borehole under steady vertical load were researched experimentally and systematically.This research indicated that under the action of steady loading,the mechanical deformation path of the simulated gas drainage borehole is gradually complicated,and the decay of the borehole circumferential strain is an important characterization of the prediction and early warning of borehole instability and collapse.The horizontal position of borehole occurs compressive strain,and the vertical of which occurs tensile strain under the action of vertical stress.At the initial stage of loading,the vertical strain is more sensitive than that in the horizontal direction.After a certain period of time,the horizontal strain is gradually higher than the vertical one,and the intersection of the borehole horizontal diameter and the hole wall is the stress concentration point.With the increase of the depth of hole,the strain shows a gradual decay trend as a whole,and the vertical strain decays more observably,but there is no absolute position correlation between the amount of strain decay and the increase in borehole depth,and the area within 1.5 times the orifice size is the borehole stress concentration zone.
A comprehensive geomechanical method for the assessment of rockburst hazards in underground mining

Rockburst hazard in mining industry all over the world is one of the most severe hazards.It is becoming increasingly common because of the ever-growing depths of mining operations accompanied by the increasing strength of rocks.One of the most difficult issues is to predict this hazard before the mining operations,whether geophysical investigations have been conducted or not.Polish experience in this field shows that in such cases an effective solution can be the geomechanical method.Therefore,extensive studies on rockburst hazard should focus on three main aspects:(1)rock mass and rock(and coal)predisposition to rockburst–laboratory tests and empirical analyses based on lithology,(2)identification of the potential places with stress and elastic energy concentration in the rock mass within the area planned for exploitation,and(3)the assessment of the impact of mining tremors on the surface.This preliminary geomechanical analysis assesses the propensity of the rock mass to dynamic breakage and provides quantitatively the level of rockburst hazard.The paper presents Polish experience in rockburst hazard assessment with the use of geomechanical method,as well as some solutions and examples of such analyses.