mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
输尿管镜联合取石网篮治疗尿道缝衣针异物的体会

2013年5月至2015年4月,我院收治尿道缝衣针异物患者4例,我们采用输尿管硬镜联合N-Gage取石网篮(美国Cook公司)成功取出,现报告如下。
脑血管二氧化碳反应性研究进展

脑血管反应性(CVR)是指脑血管在遇到刺激(如脑灌注压、动脉血C02分压水平变化)时收缩与舒张的能力,可以反映脑血管的储备能力。其中脑血管随动脉血CO_2分压(PaCO_2)水平变化的性质被称为脑血管二氧化碳反应性(CVR-CO_2)。通过检测CVR-C02可以评价脑血管的调节能力及侧支循环状态,对许多疾病(脑卒中、认知功能障碍等)的早期诊断、治疗及预后评价都有重要的意义。本文就脑血管二氧化碳反应性的影响因素、检测方法和临床应用加以综述。
动物皮肤致敏试验方法的研究进展

人们在日常生活或工作中皮肤经常会接触各种外源性化合物(化妆品、染发剂、橡胶制品等),长期反复接触这类化学物质很可能会导致皮肤发生过敏反应,出现瘙痒、红斑、丘疹、水肿甚至溃疡等临床特征的变态反应性接触性皮炎(allergic contact dermatitis, ACD)。ACD是个体皮肤或黏膜接触变应原后,变应原与表皮细胞蛋白结合形成具有致敏性的复合物,刺激机体免疫系统产生以T细胞介导的皮肤迟发型变态反应性组织损伤的疾病。据统计,西方国家15%~20%的人群(全世界约有1%人口)至少会对一种过敏原(如金属类物质、染色剂、防腐剂以及化妆品和橡胶中的某些有机化合物)产生过敏反应,变态反应性接触性皮炎已成为一种主要的职业性皮肤病[1-4]。目前,ACD的发病机制尚不十分明确,临床上也无完全治愈的方法,通常使用皮质类固醇对症治疗。因此,为了降低ACD的发病率,采用简便、快速、准确的检测方法分析化学物的皮肤致敏性,早期采取有效的防护措施,对保护人群健康具有重要的指导作用。一般通过试验动物反复接触受试物后出现的过敏反应预测人群接触该物质后是否出现过敏反应及出现过敏反应的程度,因此,本文就动物皮肤致敏试验方法的研究进展作一综述。
Tribological Behavior of AlCoCrFeNi(Ti0.5) High Entropy Alloys under Oil and MACs Lubrication

The tribological properties of AlCoCrFeNi and AlCoCrFeNiTi_(0.5) high entropy alloys under gear oil and multiply alkylated cyclopentanes (MACs) lubrication condition have been studied. The equiaxed crystal structure of AlCoCrFeNi alloy is obtained after heat-treatment. The AlCoCrFeNiTi_(0.5) alloy keeps dendrite structure. Under the gear oil with good lubrication action, AlCoCrFeNiTi_(0.5) alloy preserves better tribological properties than AlCoCrFeNi alloy. The delamination and crack behaviors tend to occur in the grain boundary of AlCoCrFeNi alloy and along the interdendrite region of AlCoCrFeNiTi_(0.5) alloy. Under the MACs with relatively poor lubrication action, the applied load slightly influences the wear behavior of AlCoCrFeNi alloy, but seriously impacts the wear mechanism of AlCoCrFeNiTi_(0.5) alloy. Compared with AlCoCrFeNi alloy, AlCoCrFeNiTi_(0.5) alloy keeps better wear-resistance at low applied load of 100 N, but preserves less wearresistance at high applied load of 200 N.
乙二胺四乙酸二钠络合消解-电感耦合等离子体原子发射光谱法测定塑料中的铅、镉、铬和汞

自欧洲议会和理事会于2003年1月23日颁布第2002/95/EC号《关于在电子电气设备中限制使用某些有害物质指令》(简称“RoHS指令”)以来,针对电子电器设备中铅、镉、铬和汞等4种元素的检测报道较多,但是每种元素的检测方法都是独立的,没有一种方法能够同时将铅、镉、铬和汞等4种元素的总含量进行准确测定。
基于搜索的软件工程研究专题前言

软件工程自1968年提出以来,一直是提高软件开发效率、保障软件质量的有效手段.软件的发展及内涵被归纳为3个空间:平台空间、认知空间和问题空间,相应地,软件工程发展也从传统的模式化转向知识化和智能化.基于搜索的软件工程(search based software engineering,简称SBSE)是传统软件工程和智能计算(intelligent computing)交叉的新兴研究领域,从问题的解空间出发,采用智能计算领域的元启发式搜索优化算法解决软件工程相关问题,能够实现自动化和智能化.基于搜索的软件工程被2007年度IEEE国际软件工程大会(ICSE)确立为软件工程的发展方向之一,到目前为止,已在软件测试数据自动生成、程序错误自动修复等方面取得显著的研究成果,有效地促进了软件工程学科的发展.本选题为“基于搜索的软件工程研究”,用以反映我国学者在这个领域的部分近期研究成果.
Exposure Assessment of Sb_2O_3 in PET Food Contact Materials

This study was conducted to do exposure assessment of the possible migration of antimony trioxide (Sb_2O_3) from Polyethylene terephthalate (PET) food contact materials (FCM). Consumption Factor (CF) and Food-type Distribution Factor (fT) were calculated from survey data with reference to the US FDA method. The most conservative migration conditions were obtained by testing Sb migration from PET FCM based on the Chinese national standard of GB/T 5009.101-2003[1]. Migration levels of Sb from PET FCM were tested and migration levels of Sb_2O_3 were obtained through molecular weight conversion between Sb and Sb_2O_3. Exposure assessment of Sb_2O_3 was undertaken. The Chinese Estimated Daily Intake (EDI) of Sb_2O_3 resulted from PET FCM was 90.7 ng p~(-1)d~(-1).
Effects of Parental Dietary Exposure to GM Rice TT51 on the Male Reproductive System of Rat Offspring

Objective To evaluate the health effects of parental dietary exposure to GM rice TT51 on the male reproductive system of rat offspring. Methods Rice-based diets, containing 60% ordinary grocery rice, MingHui63, or TT51 by weight, were given to parental rats (15 males/30 females each group) for 70 days prior mating and throughout pregnancy and lactation. After weaning, eight male offspring rats were randomly selected at each group and fed with diets correspondent to their parents' for 70 days. The effects of exposure to TT51 on male reproductive system of offspring rats were assessed through sperm parameters, testicular function enzyme activities, serum hormones (FSH, LH, and testosterone levels), testis histopathological examination, and the relative expression levels of selected genes along the hypothalamic-pituitary-testicular (HPT) axis. Results No significant differences were observed in body weight, food intake, organ/body weights, serum hormone, sperm parameters, testis function enzyme ACP, LDH, and SDH activities, testis histopathological changes, and relative mRNA expression levels of GnRH-R, FSH-R, LH-R, and AR along the HPT axis. Conclusion The results of this study demonstrate that parental dietary exposure to TT51 reveals no significant differences on the reproductive system of male offspring rats compared with MingHui63 and control.
Distinctive Drug-resistant Mutation Profiles and Interpretations of HIV-1 Proviral DNA Revealed by Deep Sequencing in Reverse Transcriptase

Objective To investigate distinctive features in drug-resistant mutations (DRMs) and interpretations for reverse transcriptase inhibitors (RTIs) between proviral DNA and paired viral RNA in HIV-1-infected patients. Methods Forty-three HIV-1-infected individuals receiving first-line antiretroviral therapy were recruited to participate in a multicenter AIDS Cohort Study in Anhui and Henan Provinces in China in 2004. Drug resistance genotyping was performed by bulk sequencing and deep sequencing on the plasma and whole blood of 77 samples, respectively. Drug-resistance interpretation was compared between viral RNA and paired proviral DNA. Results Compared with bulk sequencing, deep sequencing could detect more DRMs and samples with DRMs in both viral RNA and proviral DNA. The mutations M184I and M230I were more prevalent in proviral DNA than in viral RNA (Fisher’s exact test, P<0.05). Considering ‘majority resistant variants’, 15 samples (19.48%) showed differences in drug resistance interpretation between viral RNA and proviral DNA, and 5 of these samples with different DRMs between proviral DNA and paired viral RNA showed a higher level of drug resistance to the first-line drugs. Considering ‘minority resistant variants’, 22 samples (28.57%) were associated with a higher level of drug resistance to the tested RTIs for proviral DNA when compared with paired viral RNA. Conclusion Compared with viral RNA, the distinctive information of DRMs and drug resistance interpretations for proviral DNA could be obtained by deep sequencing, which could provide more detailed and precise information for drug resistance monitoring and the rational design of optimal antiretroviral therapy regimens.
Norovirus Infection and Histo-blood Group Antigens in Children Hospitalized with Diarrhea in Lulong and Chenzhou in China

Norovirus (NoV) is a pathogen that commonly causes viral diarrhea in children. Studies indicate that NoV recognizes human histo-blood group antigens (HBGAs) as cell attachment factors. In order to explore the correlation between of NoV infection and HBGAs, a cross-sectional study was conducted in children less than five years old who were hospitalized with diarrhea in two areas of China between November 2014 and February 2015. Of the paired stool and saliva samples taken from 424 children, NoV was detected in 24 (6%) children, with viral genotypes GII.3 (n=5), GII.4 (n=14), GII.12 (n=1), and GII.17 (n=4). All of the individuals having NoV infection were either secretors (Le~(a-b+)/Le~(x-y+)) or partial secretors (Le~(a+b+)/Le~(x+y+)) except one GII.3 infection of a non-secretor (Le~(a+b-)/Le~(x+y-)). These results suggest that secretor positive is associated with NoV infection, although non-secretors are not absolutely protected from NoV infection.
A Modeling Study of Effective Radiative Forcing and Climate Response Due to Tropospheric Ozone

This study simulates the effective radiative forcing (ERF) of tropospheric ozone from 1850 to 2013 and its effects on global climate using an aerosol-climate coupled model, BCC AGCM2.0.1 CUACE/Aero, in combination with OMI (Ozone Monitoring Instrument) satellite ozone data. According to the OMI observations, the global annual mean tropospheric column ozone (TCO) was 33.9 DU in 2013, and the largest TCO was distributed in the belts between 30?N and 45?N and at approximately 30?S; the annual mean TCO was higher in the Northern Hemisphere than that in the Southern Hemisphere; and in boreal summer and autumn, the global mean TCO was higher than in winter and spring. The simulated ERF due to the change in tropospheric ozone concentration from 1850 to 2013 was 0.46 W m~(–2), thereby causing an increase in the global annual mean surface temperature by 0.36?C, and precipitation by 0.02 mm d~(-1) (the increase of surface temperature had a significance level above 95%). The surface temperature was increased more obviously over the high latitudes in both hemispheres, with the maximum exceeding 1.4?C in Siberia. There were opposite changes in precipitation near the equator, with an increase of 0.5 mm d~(-1) near the Hawaiian Islands and a decrease of about –0.6 mm d~(-1) near the middle of the Indian Ocean.
Unsteady Flow of Shear-Thinning non-Newtonian Incompressible Fluid Through a Twin-Screw Extruder

The unsteady flow of viscous incompressible shear-thinning non-Newtonian fluid with mixed boundary is investigated. The boundary condition on the outflow is the modified natural boundary condition, it contains the additional nonlinear term, which enables us to control the kinetic energy of the backward flow. The global existence of weak solution is proved. The fictitious domain method which consists in filling the moving rigid screws with the surrounding fluid and taking into account the boundary conditions on these bodies by introducing a well-chosen distribution of boundary forces is used.
两种皮肤准备方法在颅脑择期手术中的效果比较

目的探讨两种皮肤准备方法在颅脑择期手术中的效果比较。方法2014年3月至2015年7月,采用临床随机对照的研究方法,将符合纳入标准并同意参与本研究的1 041例颅脑择期手术患者随机分为试验组和对照组,试验组525例,对照组516例。对照组采用传统皮肤准备方法:手术当日理发师用剃刀剃除患者头部全部毛发,再用肥皂清洁头部。试验组采用皮肤准备新流程:术前2d,每日用洗发膏清洁患者头部,再用洗必泰搓揉头部5min,清水洗净;手术当日,主管医生在手术室术前即刻用理发剪推除患者手术部位毛发。研究助理于患者出院当天收集患者满意度,于患者术后第30天通过电话随访收集其手术部位感染信息;其余数据从医院信息系统提取。结果试验组与对照组在手术部位感染率、平均住院日、患者满意度3个方面差异有统计学意义(P< 0.05)。结论术前皮肤准备新方法可降低颅脑择期手术患者手术部位感染率、缩短平均住院日、提升患者满意度。
Reliable Control for Nonlinear Systems with Stochastic Actuators Fault and Random Delays Through a T-S Fuzzy Model Approach

This paper considers the reliable control design for T-S fuzzy systems with probabilistic actuators faults and random time-varying delays. The faults of each actuator occurs randomly and its failure rates are governed by a set of unrelated random variables satisfying certain probabilistic distribution. In terms of the probabilistic failures of each actuator and time-varying random delays, new fault model is proposed. Based on the new fuzzy model, reliable controller is designed and sufficient conditions for the exponentially mean square stability(EMSS) of T-S fuzzy systems are derived by using Lyapunov functional method and linear matrix inequality(LMI) technique. It should be noted that the obtained criteria depend on not only the size of the delay, but also the probability distribution of it. Finally, a numerical example is given to show the effectiveness of the proposed method.
Effects of Tamarisk shrub on physicochemical properties of soil in coastal wetland of the Bohai Sea

There are many different and even controversial results concerning the effects of Tamarisk on the physicochemical properties of soil. A year-round monitoring of soil salinity, pH and moisture is conducted beneath the Tamarisk shrub in a coastal wetland in the Bohai Sea in China, to ascertain the effects of Tamarisk on the physicochemical properties of soil in coastal wetland. Compared with the control area, the soil moisture content is lower around the area of the taproot when there is less precipitation in the growing season because of water consumption by Tamarisk shrub. However, the soil moisture content is higher around the taproot when there is more precipitation in the growing season or in the non-growing period because of water conservation by the rhizosphere. The absorption of salt by the Tamarisk shrub reduces the soil salinity temporarily, but eventually salt returns to the soil by the leaching of salt on leaves by rainfall or by fallen leaves. The annual average soil moisture content beneath the Tamarisk shrub is lower than the control area by only 6.4%, indicating that the Tamarisk shrub has little effect on drought or water conservation in soils in the temperate coastal wetland with moderate annual precipitation. The annual average salinity beneath the Tamarisk shrub is 18% greater than that of the control area, indicating that Tamarisk does have an effect of rising soil salinity around Tamarisk shrubs. The soil pH value is as low as 7.3 in summer and as high as 10.2 in winter. The pH of soil near the taproot of the Tamarisk shrubs is one pH unit lower than that in the control area during the growing season. The difference in pH is less different from the control area in the non-growing season, indicating that the Tamarisk shrub does have the effect of reducing the alkalinity of soil in coastal wetland.
Responses of estuarine salinity and transport processes to sea level rise in the Zhujiang (Pearl River) Estuary

Understanding the changes of hydrodynamics in estuaries with respect to magnitude of sea level rise is important to understand the changes of transport process. Based on prediction of sea level rise over the 21st century, the Zhujiang (Pearl River) Estuary was chosen as a prototype to study the responses of the estuary to potential sea level rise. The numerical model results show that the average salt content, saltwater intrusion distance, and stratification will increase as the sea level rises. The changes of these parameters have obvious seasonal variations. The salt content in the Lingdingyang shows more increase in April and October (the transition periods). The saltwater intrusion distance has larger increase during the low-flow periods than during the highflow periods in the Lingdingyang. The result is just the opposite in Modaomen. The stratification and its increase are larger during the low-flow periods than during the high-flow periods in Lingdingyang. The response results of transport processes to sea level rise demonstrate that: (1) The time of vertical transport has pronounced increase. The increased tidal range and currents would reinforce the vertical mixing, but the increased stratification would weaken the vertical exchange. The impact of stratification changes overwhelms the impact of tidal changes. It would be more difficult for the surface water to reach the bottom. (2) The lengthways estuarine circulation would be strengthened. Both the offshore surface residual current and inshore bottom residual current will be enhanced. The whole meridional resident flow along the transect of the Lingdingyang would be weakened. These phenomena are caused by the decrease of water surface slope (WWS) and the change of static pressure with the increase of water depth under sea level rise.
Internal transcribed spacer guided multiplex PCR for species identification of Convolvulus prostratus and Evolvulus alsinoides

Shankhpushpi is a reputed drug from an Indian system of medicine for treating mental disorders and enhancing memory. Two herbs, namely Convolvulus prostratus Forssk. and Evolvulus alsinoides (L.) L., are commonly known as Shankhpushpi. Ambiguous vernacular identity can affect the scientific validity of the Shankpushpi-based herbal drug therapy. In the present investigation, a novel and sensitive multiplex PCR method based on polymorphism in the internal transcribed spacer (ITS) region was developed to establish the molecular identity of C. prostratus and E. alsinoides. DNA was isolated and the ITS region was amplified, sequenced and assembled. Sequences were aligned to identify variable nucleotides in order to develop plant-specific primers. Primers were validated in singleplex reactions and eventually a multiplex assay was developed. This assay was tested for sensitivity and validated by amplifying DNA isolated from the simulated blended powdered plant material. Primers developed for C. prostratus resulted into a 200 bp amplicon and 596 bp for E. alsinoides. The assay was found to be sensitive enough for amplification of low quantities of DNA. The method can detect 10% of the mixing of plants with each other in blended material. This PCR assay can be used for rapid botanical identification of Shankhpushpi plant materials and will improve evidence-based herbal drug therapy.
E17110 promotes reverse cholesterol transport with liver X receptor β agonist activity in vitro

Liver X receptor (LXR) plays an important role in reverse cholesterol transport (RCT), and activation of LXR could reduce atherosclerosis. In the present study we used a cell-based screening method to identify new potential LXRβ agonists. A novel benzofuran-2-carboxylate derivative was identified with LXRβ agonist activity: E17110 showed a significant activation effect on LXRβ with an EC_(50) value of 0.72 μmol/L. E17110 also increased the expression of ATP-binding cassette transporter A1 (ABCA1) and G1 (ABCG1) in RAW264.7 macrophages. Moreover, E17110 significantly reduced cellular lipid accumulation and promoted cholesterol efflux in RAW264.7 macrophages. Interestingly, we found that the key amino acids in the LXRβ ligand-binding domain had distinct interactions with E17110 as compared to TO901317. These results suggest that E17110 was identified as a novel compound with LXRβ agonist activity in vitro via screening, and could be developed as a potential anti-atherosclerotic lead compound.
Carbon emission impact on the operation of virtual power plant with combined heat and power system

A virtual power plant (VPP) can realize the aggregation of distributed generation in a certain region, and represent distributed generation to participate in the power market of the main grid. With the expansion of VPPs and ever-growing heat demand of consumers, managing the effect of fluctuations in the amount of available renewable resources on the operation of VPPs and maintaining an economical supply of electric power and heat energy to users have been important issues. This paper proposes the allocation of an electric boiler to realize wind power directly converted for supplying heat, which can not only overcome the limitation of heat output from a combined heat and power (CHP) unit, but also reduce carbon emissions from a VPP. After the electric boiler is considered in the VPP operation model of the combined heat and power system, a multi-objective model is built, which includes the costs of carbon emissions, total operation of the VPP and the electricity traded between the VPP and the main grid. The model is solved by the CPLEX package using the fuzzy membership function in Matlab, and a case study is presented. The power output of each unit in the case study is analyzed under four scenarios. The results show that after carbon emission is taken into account, the output of low carbon units is significantly increased, and the allocation of an electric boiler can facilitate the maximum absorption of renewable energy, which also reduces carbon emissions from the VPP.
Onmodeling of electrical cyber-physical systems considering cyber security?

This paper establishes a new framework for modeling electrical cyber-physical systems (ECPSs), integrating both power grids and communication networks. To model the communication network associated with a power transmission grid, we use a mesh network that considers the features of power transmission grids such as high-voltage levels, long-transmission distances, and equal importance of each node. Moreover, bidirectional links including data uploading channels and command downloading channels are assumed to connect every node in the communication network and a corresponding physical node in the transmission grid. Based on this model, the fragility of an ECPS is analyzed under various cyber attacks including denial-of-service (DoS) attacks, replay attacks, and false data injection attacks. Control strategies such as load shedding and relay protection are also verified using this model against these attacks.
Study on transient beam loading compensation for China ADS proton linac injector II

Significant transient beam loading effects were observed during beam commissioning tests of prototype II of the injector for the accelerator driven sub-critical (ADS) system, which took place at the Institute of Modern Physics, Chinese Academy of Sciences, between October and December 2014. During these tests experiments were performed with continuous wave (CW) operation of the cavities with pulsed beam current, and the system was configured to make use of a prototype digital low level radio frequency (LLRF) controller. The system was originally operated in pulsed mode with a simple proportional plus integral and deviation (PID) feedback control algorithm, which was not able to maintain the desired gradient regulation during pulsed 10 mA beam operations. A unique simple transient beam loading compensation method which made use of a combination of proportional and integral (PI) feedback and feedforward control algorithm was implemented in order to significantly reduce the beam induced transient effect in the cavity gradients. The superconducting cavity field variation was reduced to less than 1.7% after turning on this control algorithm. The design and experimental results of this system are presented in this paper.
Adsorption ability of rare earth elements on clay minerals and its practical performance

The adsorption behaviors of rare earth elements on clay minerals would have great influence on the mineralization process and the leaching process of the ion-adsorption type rare earths ore. In this work, the adsorption thermodynamics of REEs on kaolin were investigated thoroughly and systematically. The experimental results showed that the adsorption characteristics of La, Nd, Y on kaolin did fit well with the Langmuir isotherm model and their saturated adsorption capacities were 1.731, 1.587 and 0.971 mg/g, respectively. The free energy change(ΔG) values were –16.91 kJ/mol(La), –16.05 kJ/mol(Nd) and –15.58 kJ/mol(Y), respectively. The negative values of ΔG demonstrated that the adsorption of rare earth on kaolin was a spontaneously physisorption process. The deposit characteristic of the volcanic ion-adsorption type rare earths ore and the behavior of the rare earth in the column leaching process were also developed here. With the increase of the ore body depth, the distribution of the LREEs decreased and the HREEs increased. And the slight differences in the adsorption ability of REEs on clay minerals led to the fractionation effect in the column leaching process. These developed more evidences and better understanding of metallogenic regularity, and provided a theoretical basis and scientific approach to separation of the HREEs and LREEs in the leaching process.
Ni–Al composite hydroxides fabricated by cation–anion double hydrolysis method for high-performance supercapacitor

Chemical doping of nickel hydroxide with other cations (e.g. Al~(3+)) is an efficient way to enhance its electrochemical capacitive performances. Herein, a simple cation–anion (Ni~(2+) and AlO_2~-) double hydrolysis method was developed toward the synthesis of nickel–aluminum (Ni–Al) composite hydroxides. The obtained composite hydroxides possesses a porous structure, large surface area (121 m~2/g) and homogeneous element distribution. The electrochemical test shows that the obtained composite hydroxides exhibits a superior supercapacitive performances (specific capacitance of 1670 F/g and rate capability of 87% from 0.5 A/g to 20 A/g) to doping-free nickel hydroxide (specific capacitance of 1227 F/g and rate capability of 47% from 0.5 A/g to 20 A/g). Moreover, the galvanostatic charge/discharge test displays that after 2000 cycles at large current density of 10 A/g, the composite hydroxides achieves a high capacitance retention of 98%, indicative of an excellent electrochemical cycleability.