mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Determination of the desiccation behavior of clay slurries

The main objective of this study was to determine the desiccation behavior of clay slurries. A clay slurry with high water adsorption capacity (w_L = 180%, w_P = 60%, w_S = 20) was used to determine the soil water characteristic curve (SWCC), shrinkage curve, and hydraulic conductivity. The last parameter was determined similar to the Instantaneous Profile Method using evaporation tests. Results indicated that the clay slurry had an air entry value (AEV) of 1000 kPa and a residual suction of 5000 kPa that occurred at the plastic limit and the shrinkage limit, respectively. The discrepancy between theoretical and measured shrinkage limit was due to the gradual increase in clay particle contact. Unlike soils, the saturated hydraulic conductivity varied by two orders of magnitude (4 ×10~(-10) m/s at 20 kPa to 3 ×10~(-12) m/s at AEV). The unsaturated k further decreased to 10~(-14) m/s at 6 ×10~4 kPa beyond which vapor flow took place.
Coupling effects of coal pillars of thick coal seams in large-space stopes and hard stratum on mine pressure

Concerning the issue of mine pressure behaviors occurred in fully mechanized caving mining of thick coal seams beneath hard stratum in Datong Mining Area, combined with thin and thick plate theory, the paper utilizes theoretical analysis, similar experiments, numerical simulations and field tests to study the influence of remaining coal pillars in Jurassic system goaf on hard stratum fractures, as well as mine pressure behaviors under their coupling effects. The paper concludes the solution formula of initial fault displacement in hard stratum caused by remaining coal pillars. Experiments prove that coupling effects can enhance mine pressure behaviors on working faces. When inter-layer inferior key strata fractures, mine pressure phenomenon such as significant roof weighting steps and increasing resistance in support. When inter-layer superior key strata fractures, the scope of overlying strata extends to Jurassic system goaf, dual-system stopes cut through, and remaining coal pillars lose stability. As a result, the bottom inferior key strata also lose stability. It causes huge impacts on working face, and the second mine pressure behaviors. These phenomena provide evidence for research on other similar mine strata pressure behaviors occurred in dual-system mines with remaining coal pillars.
Non-destructive testing and pre-warning analysis on the quality of bolt support in deep roadways of mining districts

The bolt support quality of coal roadways is one of the important factors for the efficiency and security of coal production. By means of a self-developed technique and equipment of random non-destructive testing, non-destructive detection and pre-warning analysis on the quality of bolt support in deep roadways of mining districts were performed in a number of mining areas. The measured data were obtained in the detection instances of abnormal in-situ stress and support invalidation etc. The corresponding relation between axial bolt load variation and roadway surrounding rock deformation and stability was summarized in different mining service stages. Pre-warning technology of roadway surrounding rock stability is proposed based on the detection of axial bolt load. Meanwhile, pre-warning indicators of axial bolt load in different mining service stages are offered and some successful pre-warning cases are also illustrated. The research results show that the change rules of axial bolt load in different mining service stages are quite similar in different mining areas. The change of axial bolt load is in accord with the adjustment of surrounding rock stress, which can consequently reflect the deformation and stability state of roadway surrounding rock. Through the detection of axial bolt load in different sections of roadways, the status of real-time bolt support quality can be reflected; meanwhile, the rationality of bolt support design can be evaluated which provides reference for bolting parameters optimization.
Prevention of gob ignitions and explosions in longwall mining using dynamic seals

Most, if not all longwall gob areas accumulate explosive methane-air mixtures that pose a deadly hazard to miners. Numerous mine explosions have originated from explosive gas zones (EGZs) in the longwall gob. Since 2010, researchers at the Colorado School of Mines (CSM) have studied EGZ formation in long-wall gobs under two long-term research projects funded by the National Institute for Occupational Safety and Health. Researchers used computational fluid dynamics along with in-mine measurements. For the first time, they demonstrated that EGZs form along the fringe areas between the methane-rich atmospheres and the fresh air ventilated areas along the working face and present an explosion and fire hazard to mine workers. In this study, researchers found that, for progressively sealed gobs, a targeted injection of nitrogen from the headgate and tailgate, along with a back return ventilation arrangement, will create a dynamic seal of nitrogen that effectively separates the methane zone from the face air and eliminates the EGZs to prevent explosions. Using this form of nitrogen injection to create dynamic seals should be a consideration for all longwall operators.
Design of crown pillar thickness using finite element method and multivariate regression analysis

Minerals are now being extracted from deep mines due to drying up of resource in shallow ground. The need for suitable supports and ground control mechanisms for safe mining necessitates proper pillar design with filling technology. In addition, high horizontal stress may cause collapse of hanging wall and footwall rocks, hence designing of suitable crown pillars is absolutely necessary for imposing overall safety of the stopes. This paper provides a methodology for the evaluation of the required thickness of crown pillars for safe operation at depth ranging from 600 m to 1000 m. Analyses are conducted with the results of 108 non-linear numerical models considering Drucker-Prager material model in plane strain condition. Material properties of ore body rock and thickness of crown pillars are varied and safety factors of pillars estimated. Then, a generalized statistical relationship between the safety factors of crown pillars with the various input parameters is developed. The developed multivariate regression model is utilized for generating design/stability charts of pillars for different geo-mining conditions. These design charts can be used for the design of crown pillar thickness with the depth of the working, taking into account the changes of the rock mass conditions in underground metal mine.
Effects of in-situ stress on the stability of a roadway excavated through a coal seam

Roadways excavated through a coal seam can exert an adverse effect on roadway stability. To investigate the effects of in-situ stress on roadway stability, numerical models were built and high horizontal stresses at varying orientations were applied. The results indicate that stress concentrations, roadway deformation and failure increase in magnitude and extent as the excavation angle with respect to the maximum horizontal stress increases. In addition, the stress adjacent to the coal-rock interface sharply varies in space and evolves with time; coal is much more vulnerable to deformation and failure than rock. The results provide insights into the layout of roadways excavated through a coal seam. Roadways should be designed parallel or at a narrow angle to the maximum horizontal stress. The concentrated stress at the top corner of the face-end should be reduced in advance, and the coal seam should be reinforced immediately after excavation.
Non-fragile control of fuzzy affine dynamic systems via piecewise Lyapunov functions

This paper addresses the robust H_∞ static output feedback(SOF) controller design problem for a class of uncertain fuzzy affine systems that are robust against both the plant parameter perturbations and controller gain variations. More specifically, the purpose is to synthesize a non-fragile piecewise affine SOF controller guaranteeing the stability of the resulting closed-loop fuzzy affine dynamic system with certainH_∞ performance index. Based on piecewise quadratic Lyapunov functions and applying some convexification procedures, two different approaches are proposed to solve the robust and non-fragile piecewise affine SOF controller synthesis problem. It is shown that the piecewise affine controller gains can be obtained by solving a set of linear matrix inequalities(LMIs). Finally, simulation examples are given to illustrate the effectiveness of the proposed methods.
Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

In this paper, the simulation approach and exergy analysis of multi-stage compression high temperature heat pump(HTHP) systems with R1234ze(Z) working fluid are conducted. Both the single-stage and multi-stage compression cycles are analyzed to compare the system performance with 120°C pressurized hot water supply based upon waste heat recovery. The exergy destruction ratios of each component for different stage compression systems are compared. The results show that the exergy loss ratios of the compressor are bigger than that of the evaporator and the condenser for the single-stage compression system. The multi-stage compression system has better energy and exergy efficiencies with the increase of compression stage number. Compared with the singlestage compression system, the coefficient of performance(COP) improvements of the two-stage and three-stage compression system are 9.1% and 14.6%, respectively. When the waste heat source temperature is 60°C, the exergy efficiencies increase about 6.9% and 11.8% for the two-stage and three-stage compression system respectively.
前庭性偏头痛—从诊断到治疗

偏头痛与眩晕或头晕存在密切关系。在2013年“国际头痛学会”制订的“第三版国际头痛疾病分类—β测试版”中,首次在附录中增加了“前庭性偏头痛(vestibular migraine,VM)”的诊断,并制定了详细的诊断标准。本文将对“前庭性偏头痛”的诊断标准、临床表现、鉴别诊断和治疗等做一简要综述。
地佐辛肌注致昏迷一例

该例患者出现意识障碍的原因考虑为地佐辛引起的5-HT综合征,依据如下:(1)排除引起意识障碍的其他病因后,认为地佐辛所致中毒性脑病可能性大(如前所述);(2)病程中有精神状态、自主功能和神经肌肉的改变,未经特殊处理而痊愈,病程呈自限性,符合Dunkley等提出的血清素中毒诊断标准;(3)地佐辛是一种μ受体部分激动-拮抗药、κ受体拮抗药,纳洛酮处理后症状有所好转,但未完全恢复正常;(4)Liu等研究表明地佐辛可呈浓度依赖性抑制5-HT再摄取,进一步证实了地佐辛有导致5-HT综合征的潜在风险。目前国内外尚无应用地佐辛后引发5-HT综合征的报道,同时该诊断缺乏更可靠的诊断依据,且地佐辛5 mg引起如此严重的不良反应实属罕见,因此仍需进一步探究。
AIDS患者的麻醉及医务人员职业暴露处理

自1981年报告第1例艾滋病(acquired immunodeficiency syndrome, AIDS)以来, AIDS的流行正以每天16 000人感染的速度增长。由于人类免疫缺陷病毒(human immunodeficiency virus, HIV)主要侵犯人体的免疫系统,使之不能完全清除病毒,进而形成慢性感染,包括无症状感染期和有症状感染期。无症状感染期持续时间变化较大,此期外科疾病的发生与普通人群无差异,相关肿瘤的发病率较普通人群要高,需要手术的AIDS患者也在不断增加。由于HIV对机体免疫器官和神经系统的损害作用,导致AIDS患者对不同麻醉方式和麻醉药物的反应与普通人不同,因此针对AIDS患者的麻醉需要认真处理,同时健康医务人员在麻醉实施过程中,也要注意自我防护,避免HIV传染的风险。
超声波粉碎-总有机碳/总氮分析仪直接测定城镇污水处理厂脱水污泥中的总氮

总氮(TN)是指水体中有机氮和无机氮的总和,是反映水体受污染程度及富营养化程度的重要指标之一。污水处理厂运行过程中产生大量污泥,这些污泥含有丰富的有机质、氮、磷等,对于污泥的后期开发利用具有重要的参考价值。目前,污水中总氮的测定方法很多,如分光光度法、离子色谱法、流动注射法等,但污泥中总氮的检测方法很少。 CJ/T 221-2005《城市污水处理厂污泥检验方法》中规定了脱水污泥中总氮的测定,采用碱性过硫酸钾消解紫外分光光度法。由于污泥中的总氮含量较高,此方法规定取样0.01g。
Attitude tracking control of flexible spacecraft with large amplitude slosh

This paper is focused on attitude tracking control of a spacecraft that is equipped with flexible appendage and partially filled liquid propellant tank. The large amplitude liquid slosh is included by using a moving pulsating ball model that is further improved to estimate the settling location of liquid in microgravity or a zero-g environment. The flexible appendage is modelled as a three-dimensional Bernoulli– Euler beam, and the assumed modal method is employed. A hybrid controller that combines sliding mode control with an adaptive algorithm is designed for spacecraft to perform attitude tracking. The proposed controller has proved to be asymptotically stable. A nonlinear model for the overall coupled system including spacecraft attitude dynamics, liquid slosh, structural vibration and control action is established. Numerical simulation results are presented to show the dynamic behaviors of the coupled system and to verify the effectiveness of the control approach when the spacecraft undergoes the disturbance produced by large amplitude slosh and appendage vibration. Lastly, the designed adaptive algorithm is found to be effective to improve the precision of attitude tracking.
Uniaxial experimental study of the acoustic emission and deformation behavior of composite rock based on 3D digital image correlation (DIC)

In this paper, uniaxial compression tests were carried out on a series of composite rock specimens with different dip angles, which were made from two types of rock-likematerial with different strength. The acoustic emission technique was used to monitor the acoustic signal characteristics of composite rock specimens during the entire loading process. At the same time, an optical non-contact 3D digital image correlation techniquewas used to study the evolution of axial strain field and the maximal strain field before and after the peak strength at different stress levels during the loading process. The effect of bedding plane inclination on the deformation and strength during uniaxial loading was analyzed. The methods of solving the elastic constants of hard and weak rock were described. The damage evolution process, deformation and failure mechanism, and failure mode during uniaxial loading were fully determined. The experimental results show that the θ = 0◦–45◦ specimens had obvious plastic deformation during loading, and the brittleness of the θ = 60◦–90◦ specimens gradually increased during the loading process. When the anisotropic angle θ increased from 0◦ to 90◦, the peak strength, peak strain, and apparent elastic modulus all decreased initially and then increased. The failure mode of the composite rock specimen during uniaxial loading can be divided into three categories: tensile fracture across the discontinuities (θ = 0◦–30◦), sliding failure along the discontinuities (θ = 45◦–75◦), and tensile-split along the discontinuities (θ = 90◦). The axial strain of the weak and hard rock layers in the composite rock specimen during the loading process was significantly different from that of the θ = 0◦–45◦ specimens and was almost the same as that of the θ = 60◦–90◦ specimens. As for the strain localization highlighted in the maximum principal strain field, the θ = 0◦–30◦ specimens appeared in the rock matrix approximately parallel to the loading direction, while in the θ = 45◦–90◦ specimens it appeared at the hard and weak rock layer interface.
Characterization for elastic constants of fused deposition modelling-fabricated materials based on the virtual fields method and digital image correlation

Fused deposition modelling (FDM), a widely used rapid prototyping process, is a promising technique in manufacturing engineering. In this work, a method for characterizing elastic constants of FDM-fabricated materials is proposed. First of all, according to the manufacturing process of FDM, orthotropic constitutive model is used to describe the mechanical behavior. Then the virtual fields method (VFM) is applied to characterize all the mechanical parameters (Q_(11), Q_(22), Q_(12), Q_(66)) using the full-field strain, which is measured by digital image correlation (DIC). Since the principal axis of the FDM-fabricated structure is sometimes unknown due to the complexity of the manufacturing process, a disk in diametrical compression is used as the load configuration so that the loading angle can be changed conveniently. To verify the feasibility of the proposed method, finite element method (FEM) simulation is conducted to obtain the strain field of the disk. The simulation results show that higher accuracy can be achieved when the loading angle is close to 30◦. Finally, a disk fabricated by FDM was used for the experiment. By rotating the disk, several tests with different loading angles were conducted. To determine the position of the principal axis in each test, two groups of parameters (Q_(11), Q_(22), Q_(12), Q_(66)) are calculated by two different groups of virtual fields. Then the corresponding loading angle can be determined by minimizing the deviation between two groups of the parameters. After that, the four constants (Q_(11), Q_(22), Q_(12), Q_(66)) were determined from the test with an angle of 27◦.
Electrochemical capacitance of nanostructured rutheniumdoped tin oxide Sn_(1–x)Ru_xO_2 by the microemulsion method

Synthesis of nanostructured Ru-doped SnO_2 was successfully carried out using the reverse microemulsion method. The phase purity and the crystallite size were analyzed by XRD. The surface morphology and the microstructure of synthesized nanoparticles were analyzed by SEM and TEM. The vibration mode of nanoparticles was investigated using FTIR and Raman studies. The electrochemical behavior of the Rudoped SnO_2 electrode was evaluated in a 0.1 mol/L Na_2SO_4 solution using cyclic voltammetry. The 5% Ru-doped SnO_2 electrode exhibited a high specific capacitance of 535.6 F/g at a scan rate 20 mV/s, possessing good conductivity as well as the electrocycling stability. The Ru-doped SnO_2 composite shows excellent electrochemical properties, suggesting that this composite is a promising material for supercapacitors.
Efficient growth suppression in pancreatic cancer PDX model by fully human anti-mesothelin CAR-T cells

Pancreatic cancer is a devastating disease ranked as the 4th leading cause of cancer-related deaths in the United States, and its incidence rate is increasing according to the latest statistics. The overall survival rates for patients with pancreatic cancer have not significantly improved over the past thirty years(Siegel et al., 2012; Simard et al., 2012). One of the reasons for the high mortality rates is the high resistance of pancreatic cancer to chemotherapy and radiation. Most patients are diagnosed at late stages of the disease. Approximately 15%–20% of patients diagnosed with pancreatic cancer are eligible for surgical resection, and 85% of these patients eventually experience relapse and ultimately cancer-related death(Siegel et al., 2012). In recent years, increasing evidence indicates that the fibro-inflammatory stroma is a source of cellular and molecular components contributing to tumor progression and metastasis(Feig et al., 2012; Waghray et al., 2013). Importantly, increased levels of stroma are positively related to a poor prognosis(Erkan et al., 2008). Despite the broader understanding of pancreatic cancer biology, gemcitabine, a chemotherapeutic approved for pancreatic cancer treatment approximately twenty years ago, still remains the standard of care(Burris et al., 1997). Thus, the development of novel treatment strategies for this devastating disease is urgently needed.
Effect of Ca-Fe oxides additives on NO_x reduction in iron ore sintering

As the emission control regulations get stricter, the NO_x reduction in the sintering process becomes an important environmental concern owing to its role in the formation of photochemical smog and acid rain. The NO_x emissions from the sintering machine account for 48% of total amount from the iron and steel industry. Thus, it is essential to reduce NO_x emissions from the sintering machine, for the achievement of clean production of sinter. Ca-Fe oxides, serving as the main binding phase in the sinter, are therefore used as additives into the sintering mixture to reduce NO_x emissions. The results show that the NO_x reduction ratio achieves 27.76% with 8% Ca-Fe oxides additives since the Ca-Fe oxides can advance the ignition and inhibit the nitrogen oxidation compared with the conventional condition. Meanwhile, the existence of Ca-Fe oxides was beneficial to the sinter quality since they were typical low melting point compounds. The optimal mass fraction of Ca-Fe oxides additives should be less than 8% since the permeability of sintering bed was significantly decreased with a further increase of the Ca-Fe oxides fines, inhibiting the mineralization reaction of sintering mixture. Additionally, the appropriate particle size can be obtained when mixing an equal amount of Ca-Fe oxides additives of -0.5 mm and 0.5-3.0 mm in size.
Hybrid Method Based on Information Gain and Support Vector Machine for Gene Selection in Cancer Classification

It remains a great challenge to achieve sufficient cancer classification accuracy with the entire set of genes, due to the high dimensions, small sample size, and big noise of gene expression data. We thus proposed a hybrid gene selection method, Information Gain-Support Vector Machine (IG-SVM) in this study. IG was initially employed to filter irrelevant and redundant genes. Then, further removal of redundant genes was performed using SVM to eliminate the noise in the datasets more effectively. Finally, the informative genes selected by IG-SVM served as the input for the LIBSVM classifier. Compared to other related algorithms, IG-SVM showed the highest classification accuracy and superior performance as evaluated using five cancer gene expression datasets based on a few selected genes. As an example, IG-SVM achieved a classification accuracy of 90.32% for colon cancer, which is difficult to be accurately classified, only based on three genes including CSRPI, MYL9, and GUCA2B.
Autonomous process collaboration framework for C4ISR system interoperation

Interoperability plays an important role in the joint command, control, communication, computer, intelligence, surveillance, reconnaissance (C4ISR) operations. Coordinating and integrating operational processes to fulfill a common mission are challenged by the ever-changing battlefield and hence requires a cross-organizational process management that produces an autonomous, flexible and adaptable architecture for collaborative process evolution. The traditional business process collaboration pattern is based on the predefined "public-view" perspective and cannot meet the requirement of the joint task operations. This paper proposes a flexible visibility control mechanism and a dynamic collaboration framework for modeling and generating collaborative processes. The mechanism allows collaborators to define a set of visibility rules to generate different views of the private processes for different collaborations, which gives a great flexibility for the collaboration initiator to decide on an appropriate collaboration pattern. The framework supports collaborators to dynamically and recursively add a new process or even a new organization to an existing collaboration. Moreover, a formal representation of the processes and a set of generation algorithms are provided to consolidate the proposed theory.
miRNA和lncRNA在早发性卵巢功能不全中的研究进展

微小RNA (miRNA)和长链非编码RNA (lncRNA)都属于非编码RNA (ncRNAs),它们被认为是一类不编码蛋白质的RNA分子,但能以RNA的形式在表观遗传调控、转录调控以及转录后调控等层面上参与蛋白编码基因调控。许多研究表明miRNA和lncRNA在多囊卵巢综合征、子宫内膜异位症、妇科肿瘤中发挥了重要作用,而近年来的研究发现,miRNA和lncRNA在早发性卵巢功能不全(POI)的发生发展中同样有着重要作用,并且随着深入研究,将有利于逐步揭示POI的发病机制,有助于发现新的生物标志物和靶向治疗位点,为POI的预防、早期诊断和治疗提供新思路。
Amplitude Non-Sensitive Stratal Dispersion Shadow for Dim Spot Reservoir Delineation

Dim spots are those gas reservoirs located in relative deeper target strata in which seismic reflection energy remarkably goes down or disappear, and are thus quite difficult to recognize in comparison with the bright spots in conventional seismic interpretation due to their weak reflection amplitude. To pursue the amplitude non-sensitive indicators to brighten dim spot reservoirs, this work presents the stratal dispersion shadow (SDS) to reveal the hydrocarbon dim spots by measuring their dispersion anomalies instead of their reflection amplitude.