mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Microstructure of peritectic Tb-Dy-Fe alloys after electromagnetic levitation melting

The electromagnetic levitation melting of the rare earth giant magnetostrictive materials Tb_(0.27)Dy_(0.7)Fe_(1.90) alloys is realized. The compound is difficult to realize levitation melting at terrestrial environment because of its high density and low electric conductivity. The microstructure of the sample near peritectic composition obtained by this process contains REFe_2 matrix phase, a large amount of rod-like REFe_3 phase embedded in the matrix phase, rare earth rich phase enriching around the REFe_3 phase and a small amount of rare earth rich phase in the REFe_2 matrix phase far from the REFe_3 phase, which is significantly different from that of the sample obtained by general melting-casting process with the same composition，which contains almost complete REFe_2 phase and a small amount of RE rich phase in the REFe_2 matrix phase. The formation of the microstructure can be attributed to the coupled growth of the peritectic phase-REFe_2 and the primary phase-REFe_3, and the subsequent eutectic reaction under this experimental condition.
Evi-1反以寡核苷酸对人红白血病细胞系HEL的抑制作用

Evi-1（ecotropic virus integration site 1）定位于染色体3q26，为一原癌基因，与髓系恶性肿瘤的发生密切相关。Evi-1基因编码含两个锌指区的蛋白，能特异地结合基因启动子DNA序列，发挥转录调节作用。正常人骨髓和外周血细胞Evi-mRNA表达阴性。我们的初步研究结果表明，近50%的骨髓增生异常综合征（MDS）患者Evi-1基因表达阳性，Evi-1的表达水平与MDS向急性髓系白血病（AML）演变有关。为进一步探讨Evi-1在AML发生和发展中可能的作用，我们观察了Evi-1反义核苷酸（Evi-1-AS）对人红白血病细胞系HEL增殖的抑制作用。
Influence of doping effect on structure and superconducting properties of MgB_2

Mg_(1-x)M_xB_2 (M = Li or deficiency) compounds were prepared and their structure and superconducting properties were studied. The results show that nearly single-phased Mg_(1-x)Li_xB_2 samples have been obtained while x ≤ 0.3. With increasingx, lattice parameters a decreases and c shows no obvious change, and the superconducting transition temperature T_c of Mg_(1-x)Li_xB_2 decreases. Moreover, loss of superconductivity occurs for sample with x = 0.5. For Mg_(1-x)B_2 nearly single-phased samples can be obtained at x = 0. MgB_2 coexists with MgB_4 phase and some minor impurity phases while 0 < x < 0.5. With the increase of x, a and c of MgB_2 decreases and increases, respectively, and T_c decreases. The obvious difference in the superconductivity of Mg_(1-x)Li_xB_2 and Mg_(1-x)B_2 suggests that Li indeed dopes into the structure of MgB_2.
欧洲心脏学会关于Brugada综合征诊断指标的建议

Burgada综合征的文献报道始于1953年，1992年其与心脏性猝死的高危关系被明确提出，以后各国报道此家族性显性遗传的临床综合征患病率约为5 ～ 66/万。然而，该病的诊断标准仍欠明确。由于Brugada综合征具有心电图表现明隐时现、钠通道阻滞剂可以使之显现以及其特异性与猝死有关等特点，引起人们的关注。欧洲心脏学会经过2年准备，根据现有临床资料的诊断标准及对其分子和细胞机制的最新认识，由12位来自欧美的专家取得共识，提出“关于Brugada综合征诊断指标的建议”，刊登于《European Heart Journal》2002年23卷1648页至1654页；同时还指出，此诊断建议并不完整，需要从今后的分子学和病理解剖学研究、前瞻性临床资料[尤其是区分致心律失常性右室心肌病（ARVC）的资料]中进一步完善。
Mechanical relationship in steel-aluminum solid to liquid bonding

The bonding of solid steel plate to liquid aluminum was studied by using rapid solidification. The relationship between the bonding parameters such as preheat temperature of steel plate, temperature of aluminum liquid and bonding time, and the interfacial shear strength of bonding plate was established by artificial neural networks perfectly. This relationship was optimized with a genetic algorithm. The optimum bonding parameters are: 226 ℃ for preheat temperature of steel plate, 723 ℃ for temperature of aluminum liquid and 15.8s for bonding time, and the largest interfacial shear strength of bonding plate is 71.6MPa.
Asset-backed Securltization a New Financing Channel for the Telecom Industry

Telecom enterprises are in urgent need of a large amount of funds for updating networks and expanding market shares,  while asset-backed securitization is the most rapidly and vigorously growing product of financial in novation in the international capital market. Since telecom asset is characterized by long recovery period,  poor liquid ity, high quality and stable cash flow,  which are the basic conditions for using asset-backed securitization to finance, asset-backed securitization can be a new financing way for telecom enterprises
Facilitating effect of histamine on spatial memory deficits induced by dizocilpine as evaluated by 8-arm radial maze in SD rats

AIM: To investigate whether or not histamine is involved in spatial memory deficits induced by dizocilpine (MK-801) as evaluated by 8-arm radial maze of rats. METHODS: 8-Arm (4-arm baited) radial maze was used to measure spatial memory in rats. RESULTS: Bilaterally intrahippocampal (ih) injection of MK-801 (0.3 μg/site) impaired working memory and reference memory in rats. Both histamine (50, 100 ng/site, ih) and intraperitoneal (ip) injection of histidine (100, 200 mg/kg) markedly improved the spatial memory deficits induced by MK-801. On the other hand, the ameliorating effect of histidine (100 mg/kg, ip) was completely antagonized by α-fluoromethylhistidine (α-FMH, 5 μg/site, ih), a potent and selective histidine decarboxylase (HDC) inhibitor, and H_1-antagonist pyrilamine (1 μg/site, ih), but not by H_2-antagonist cimetidine, even at a high dose (2.5 μg/site, ih). CONCLUSION: The hippocampal histamine plays an important role in the ameliorating effect on MK-801-induced spatial memory deficits, and its action is mediated through postsynaptic H_1-receptor.
The Research on the Regulation to the Compensated Utilization of the Resource Assets in Telecommunication Service Industry: Wireless Frequency as a Study Case

This Paper focuses on the compensated utilization of resource assets such as wireless frequency. It supplies the methods of estimating value of resource assets based on the analysis of its characteristics . It also analyzes the compensated policy-making and its affects on the Telecommunication Service Providers (TSP) performance gained by using resource assets. The results of the research indicate that the compensated utilization will promote the TSP to improve their economic efficiency, and aid to build a fairer competitive environment in Telecommunication Service Industry (TSI) in China.
Effect of high-temperature pre-precipitation on microstructure and properties of 7055 aluminum alloy

The near-solvus pre-precipitation following higher temperature solution treatment was performed on 7055 aluminum alloy. The effect of the pre-precipitation on the microstructure, age hardening and stress corrosion cracking of 7055 alloy was investigated. The optical and transmission electron microscopy results show that the near-solvus pre-precipitation can be limited to grain boundary and enhance the discontinuity of grain boundary precipitates in the sequent age. The stress corrosion cracking resistance of aged 7055 alloys could be improved with non-deteriorated strength and plasticity via the pre-precipitation.
Information characteristics of discrete K-L transform based on information entropy

Under minimum squared error (MSE) rule, discrete K-L transform (DKLT) was given. The 2nd information function, the 2nd information entropy and geometry entropy under DKLT were proposed, by which information characteristics of DKLT were metricized. Two new concepts of information rate (IR) and accumulated information rate (AIR) were proposed by which the degree of information feature compression of DKLT was illustrated.
Aluminum-silicates flotation with quaternary ammonium salts

The zeta potential measurements show that the flotation separation of diaspore from kaolinite, illite and pyrophyllite could be achieved in the range of pH 4-6.5 with cationic collectors. A special quaternary ammonium salts(DTAL) shows better selectivity than that the dodecyl amine(DDA) does for the flotation of three silicates. The closed-circuit flotation results show that the reverse flotation de-silicate can be achieved with DTAL as collector, a new inorganic reagent(SFL) as depressant and MIBC as frother to obtain a bauxite concentrate m(Al_2O_3)/m(SiO_2) >10, Al_2O_3 recovery >86%).
透析个人住房抵押贷款等额本息还款法

等额本息还款法是国际上常用的一种消费贷款还款方式。由于是每期还款一次，每期支付所有本金在本期所产生的利息后再还一部分本金，因而，其复利本质不易被人们觉察。通过研究，本文向读者详尽地剖析个人住房抵押贷款中的复利政策，并揭示其实质与内涵。同时，本文研究发现，在等额本息还款方式下，两种不同方式计算出应归还的贷款本金金额和所支付的贷款利息金额两种截然相反的构成，并探讨了产生这一矛盾性结果的根源，以及个贷还款自始至终每期还款所含本金逐步减少的事实。由此可能导致我国消费信贷余额和不良消费信贷金额统计差异。此外，本文还分别研究两种计算方法下的提前还款等问题。
关于分工、专业化和借贷利率的一般均衡分析

斯密和庞巴维克从分工与专业化的角度解释了储蓄与借贷行为产生的原因以及利息的本质。穆勒也强调借贷行为在社会关系和改进劳动生产率方面的重要作用。本文利用内生借贷行为和内生的网络分工模型分析了利率与投资及经济发展之间的一些主要关系，并利用经济发展事实对部分结论作了论证。
Progress in flotation de-silica

Flotation de-silica from the diasporic-bauxite is one of the key basic research projects. It aimed to reveal the scientific mechanism between the crystal structure and surface properties, structure-properties of effective flotation reagent as well as the solution chemistry of flotation and interfacial interactions in the flotation system of diaspore and aluminosilicate minerals. It will underlay the new technology of reverse-flotation de-silica. The technology is important to enhance the mass ratio of Al_2O_3 to SiO_2, decreasing the silica content and energy consumption in producing aluminum oxide and economically utilizing the diasporic-bauxite in China.
Molsidomine and N-omega-nitro-L-arginine methyl ester inhibit implantation and apoptosis in mouse endometrium

AIM: To investigate the possible effect of nitric oxide on receptivity and apoptosis of mouse endometrium and the possible pathway. METHODS: Female pregnant mice were treated with either molsidomine, a generator of nitric oxide (NO), or N-omega-nitro-L-arginine methyl ester (L-NAME), an inhibitor of NO synthase. The pregnancy rates of each group were calculated; 3'-end-labeling was used to detect DNA fragmention of apoptotic cells; immunohistochemistry, in situ hybridization, and Western blot were applied respectively to estimate expression levels of Fas/FasL proteins and mRNA. RESULTS: The pregnancy rate in the drug treated group was reduced in a dose-dependent manner; apoptosis, Fas protein and mRNA levels in the endometrium of drug treated mice were correlatively decreased during the peri-implantation period. CONCLUSION: The decreased pregnant rate in mice by abnormal levels of nitric oxide may be brought about by inhibiting the normally occurrence of apoptosis in the receptive endometrium.
13例80岁以上病人行冠状动脉旁路移植术

1997年10月至2002年12月，我们共对13例80岁以上病人行冠状动脉（冠脉）旁路移植术（CABG）。现报道如下。临床资料全组男10例，女3例；年龄80～85岁，平均(82.8±1.9)岁。合并高血压7例，房颤6例，二尖瓣轻中度反流5例，脑血管意外5例，糖尿病4例，术前肾功能不全3例，慢支肺气肿2例，冠脉支架2例，安装起搏器2例，完全左束支传导阻滞、室壁瘤、左房粘液瘤各1例。
Characterization of Al-12Si alloy and its composites in dry sliding friction and wear at elevated temperature

Al-12Si alloy matrix composites reinforced with Al_2O_3 and carbon fibers respectively as well as with the two fibres were fabricated by squeeze-infiltration．The elevated temperature (about 400 ℃) friction and wear behaviors of Al-12Si alloy and its composites were investigated．The results show that the hybrid composites reinforced with Al_2O_3 and carbon fibres are of superior high temperature wear resistance．The critical transition temperature from mild wear to severe wear of the composites reinforced only with Al_2O_3 fiber is improved markedly compared with monolithic Al-12Si alloy, from 200 ℃ to 300 ℃．However, the critical transition temperature of the hybrid composites reinforced with Al_2O_3 and carbon fibers is improved further to 400 ℃．The reinforcing fibers have no significant effect on wear mechanisms of Al-12Si alloy．The dominant mechanisms are ploughing grooves and delamination as well as slight adhesion during mild wear regime．The subsurface consists of three regions：non-peeling delamination layer, microcrack formation and propagation zone, and unaffected zone. Whereas the dominant mechanism is shifted to severe wear when test temperature exceeds the critical transition temperature.
Effect of Sn on as-cast ageing behavior of Al-Si-Mg alloy

The effect of minor additions of Sn on the as-cast ageing behavior of Al-11Si-0.35Mg alloy was investigated. It is shown that precipitation has been retarded in Sn containing alloy and more time is needed to reach its peak hardness，which is bigger than that of the base alloy. Analysis of the kinetic data shows that Sn addition does not change the growth dependent parameter n, but increases the nucleation density dependent parameter k. TEM results show that there are little precipitates in Sn containing alloy at the initial stage of as-cast ageing. However, the Sn addition increases the net density of precipitates during as-cast ageing, because there are many dislocation loops formed as ageing progresses and Sn segregated at the edges of dislocation loops, which acts as the nuclei of precipitates.
CMHJ主题标引常见错误及标引方法与技巧

标引是对文献进行主题分析，从自然语言转化成规范化的检索语言的过程。对文献给予分类号标识的过程，称为分类标引；给予主题词标识的过程，称为主题标引。国家新闻出版署于1999年公布了《中国学术期刊（光盘版）检索与评价数据规范》，要求进入《中国学术期刊全文数据库》的每一篇论文，都要提供与该论文主题内容相匹配的检索数据项，即规范化、标准化检索标识，作为该文献数据库检索入口词。目的是利用计算机加快检索工具的编制速度，缩短期刊检索时，简化其数据库的标引工作。国内标准《文献主题标引规则》（GB7713－87）规定学术性期刊作者在稿件的特定位置标出3－8关键词。所以探讨文献标引的规律，有利于临床工作者撰写医学论文时正确地选择相应的主题词，提高检索效率。
Reverse flotation separation on diaspore and kaolinite in the presence of cationic polyacrylamide polymers

Based on the analyses of crystal structures and surface properties of diaspore and kaolinite, an effective diaspore depressant, CPAM(cationic polyacrylamide) polymers was discovered by single minerals tests, separation experiments of artificial mixed minerals, zetapotential and adsorption measurement. The reverse flotation separation on diaspore and kaolinite can be carried out using collector dodecylamine acetate and depressant CPAM under pH5.5-8.5. On the surfaces of diaspore, there are a large amount of active aluminum atoms. They can bond with-C(O)NH_2groups in CPAM and make the -CH_2N~+(CH_3)_3 groups in CPAM orient toward the outer surfaces of diaspore, which prevents a majority of the dodecylamine cations from adsorbing on diaspore, enhances hydrophilicity of diaspore, and depresses the floatability of diaspore. But for kaolinite, CPAM polymers have little effect on its floatability.
Thermal stability of Zr_(55)Al_(10)Ni_5Cu_(30) bulk amorphous alloy during continuous heating and isothermal annealing

The crystallization behavior of Zr_(55)Al_(10)Ni_5Cu_(30) (mole fraction, %) bulk amorphous alloy during continuous heating and isothermal annealing was investigated. The results show that there exists a first order exponential decay relation between the characteristic temperatures and the heating rates during continuous heating process. The activation energy for glass transition E_g and that for crystallization E_p and E_x during continuous heating were evaluated by Kissinger plots. In addition, there is a second order exponential decay relation between the annealing temperature and the corresponding crystallization time during isothermal annealing. The isothermal activation energy obtained by Arrhenius equation increases as crystallization proceeds, indicating the sufficient stability of the residual amorphous structure after initial crystallization.
Effects of electromagnetic stirring on microstructures of solidified aluminum alloys

Al-20%Cu, Al-33%Cu and Al-7%Si alloys were solidified with electromagnetic stirring(EMS). The fluid flow induced by electromagnetic stirring leads to the increases of the lamellar spacing of Al-CuAl2 and Al-Si eutectics and the secondary dendritic arm spacing. Rod-like eutectic structure plus pro-eutectic α(Al) are observed in Al-Cu eutectic alloy when the agitating voltage is increased over 130V, and in the hypoeutectic alloys, globular grains of proeutectic α(Al) grains may form when the magnetic field is strong enough. The Si flakes in the Al-Si eutectic are also coarsened by applying forced flow during solidification, which is always related to the depression of their branching in the growth by the forced convection.
Enhance Lower Hybrid Current Drive Experiments on HT-7 Tokamak

Effective Lower Hybrid Current Driving (LHCD) and improved confinement experiments in higher plasma parameters (I_p > 200kA, n_e > 2 × 10~(13) cm~(-3), Te ≥ 1 keV) have been curried out in optimized LH wave spectrum and plasma parameters in HT-7 superconducting tokamak. The dependence of current driving efficiency on LH power spectrum, plasma density (n-bar)_e and toroidal magnetic field Bt has been obtained under optimal conditions. A good CD efficiency was obtained at higher plasma current and higher electron density. The improvement of the energy confinement time is accompanied with the increase in line averaged electron density, and in ion and electron temperatures. The highest current driving efficiency reachedη_(CD) = Ip (n-bar)_eR/P_(RF) ≈1.05×1019 Am-2/W. Wave-plasma coupling was sustained in a good state and the reflective coefficient was less than 5 %. The experiments have also demonstrated the ability of LH wave in the start-up and ramp-up of the plasma current. The measurement of the temporal distribution of plasma parameter shows that lower hybrid leads to a broader profile in plasma parameter. The LH power deposition profile and the plasma current density profile were modeled with a 2D Fokker-Planck code corresponding to the evolution process of the hard x-ray detector array.
老年人与成年子女间社会支持与老年人自尊的关系

本文采取方便取样的方法，从北京、沈阳、山西、湖北四省市选取288名老年被试，其中城市人口124例，城镇人口74例，农村人口90例；平均年龄65岁（53～87岁），53～59岁45例，60～64岁91例，65～69岁94例，70岁以上58例；男159例，女129例；平均受教育年限7年，文盲36例，小学水平98例，中学水平68例，中专水平33例，大学以上水平53例；婚姻状况为单身2例，已婚（配偶还健在234例，离婚2例，丧偶50例。
Effect of temperature on high temperature plasticity of 95W-5(Ni/Fe/Co) alloy

The Effect of temperature on the mechanical properties of 95W-5(Ni/Fe/Co) alloy was analyzed and the relationship curve was provided. Through the fractograph of tensile samples, the mechanism at different temperatures in micro scale was discussed. The results show that the abnormality of the plasticity of tungsten alloy is closely related to the interface strength. At temperature above 600 ℃ the fraction of cleavage along the interface between the bonding phase and the grain boundary increases with increasing temperature. When the temperature is beyond 1100 ℃, the fracture occurs at the interface entirely.
Gauge principle and variational formulation for flows of an ideal fluid

A gauge principle is applied to mass flows of an ideal compressible fluid subject to Galilei transformation. A free-field Lagrangian defined at the outset is invariant With respect to global SO(3) gauge transformations as well as Galilei transformations. The action principle leads to the equation of potential flows under constraint of a Continuity equation. However, the irrotational flow is not invariant with respect to local SO(3) gauge transformations. According to the gauge principle, a gauge-covariant derivative is defined by introducing a new gauge field. Galilei invariance of the derivative requires the gauge field to coincide with the vorticity, i.e. the curl of the velocity field. A full gauge-covariant variational formulation is proposed on the basis of the Hamilton's principle and an assoicated Lagrangian. By means of an isentropic material variation taking into account individual particle motion, the Euler's equation of motion is derived for isentropic flows by using the covariant derivative. Noether's law associated with global SO(3) gauge invariance leads to the conservation of total angular momentum. In addition, the Lagrangian has a local symmetry of particle permutation which results in local conservation law equivalent to the vorticity equation.
Numerical solution of the unsteady euler equations for airfoils using approximate boundary conditions

This paper presents an efficient numerical method for solving the unsteady Euler equations on stationary rectilinear grids. Boundary conditions on the surface of an airfoil are implemented by using their first-order expansions on the mean chord line. The method is not restricted to flows with small disturbances since there are no restrictions on the mean angle of attack of the airfoil. The mathematical formulation and the numerical implementation of the wall boundary conditions in a fully implicit time-accurate finite-volume Euler scheme are described. Unsteady transonic flows about an oscillating NACA 0012 airfoil are calculated. Computational results compare well with Euler solutions by the full boundary conditions on a body-fitted curvilinear grid and published experimental data. This study establishes the feasibility for computing unsteady fluid-structure interaction problems, where the use of a stationary rectilinear grid offers substantial advantages in saving computer time and program design since it does not require the generation and implementation of time-dependent body-fitted grids.
Symmetric mode instability of the slipflow model for flows in a microchannel with a vanishing Reynolds number

The slipflow model is usually used to study microflows when the Knudsen number lies between 0.01 and 0.1. The instability due to microscale effect seems to have never been studied before. In this paper we present preliminary results for the instability (not physical instability) of this model when applied to microchannel flow with a vanishing Reynolds number. The present paper is restricted to symmetrical mode. Both first-order and second-order slip boundary conditions will be considered.
Mechanically activated disproportionation of NdFeB alloy by ball milling in hydrogen

Mechanically activated disproportionation of Nd_(12)Fe_(82)B_6 alloy by ball milling in hydrogen atmosphere was experimentally investigated. The aspects of thermodynamics and kinetics for the mechanically activated disproportionation of the NdFeB alloy were discussed. Both the evolution of the disproportionation reaction and the corresponding microstructure change of the alloy during milling were characterized by X-ray diffraction (XRD) analysis. The results show that the matrix phase Nd_2Fe_(14)B of the as-cast Nd_(12)Fe_(82)B_6 alloy can be disproportionated into a mixture of Nd-hydride (H_5Nd_2), FeB/Fe_2B, and α-Fe, by ball milling under hydrogen pressure of 0.2MPa. The as-disproportionated phases are of the size about 20nm, suggesting that ball milling in hydrogen is an effective route for low-temperature disproportionation processing of the NdFeB alloy to ensure a full nano-structured as-disproportionated microstructure. This is the basis for synthesizing Nd_2Fe_(14)B/α-Fe nano-composites with magnetic exchange coupling effect by subsequent desorption-recombination processing.
Biodegradation of methanol vapor in a biofilter

Volatile organic compounds (VOCs) are a new class of air pollutants posing threat to the environment. Newer technologies are being developed for their control among which biofiltration seem to be most attractive. Biofiltration of methanol vapor from air stream was evaluated in this study. Experimental investigations were conducted on a laboratory scale biofilter, containing mixture of compost and polystyrene inert particles as the filter materials. Mixed consortium of activated sludge was used as an inoculum. The continuous performance of biofilter for methanol removal was monitored for different concentrations and flow rates. The removal efficiencies decreased at higher concentrations and higher gas flow rates. A maximum elimination capacity of 85 g/(m~3·h) was achieved. The response of biofilter to upset loading operation showed that the biofilm in the biofilters was quite stable and quickly adapted to adverse operational conditions.
Textures in high purity aluminum foils and AA3004 sheets

The simulation of rolling texture with "minimum shear principle" and the strengthening of cube recrystallization texture by inhomogeneous rolling, low strain deformation and multistage annealing, of the formation and evolution of texture in high purity Al were presented. The plastic anisotropy of crystalline materials were also summarized, including determination of the co-yield surfaces and condition of slipping as well as mechanical twinning, prediction of plastic anisotropy of deep drawing with modified Tucker’s method, evolution of earing behavior of Al alloy sheets for deep drawing with CMTP approach, and construction of texture balance design and some technologies to suppress plastic anisotropy in practical production.
市场化进程中的行业工资决定假说及其数量检验

本文首先提出了一个假说：行业的市场化程度差异造成了行业间的工资水平差异；然后，利用定量分析方法从动态和静态两个方面对这一假说进行了检验；最后对其机理进行了分析。