mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Elevated temperature intensity, timing, and duration of exposure affect soybean internode elongation, mainstem node number, and pod number per plant

A study was conducted in four compartments of a polycarbonate greenhouse at Gainesville, FL, USA to investigate how a soybean(Glycine max L. Merr.) cultivar, Maverick(maturity group III, indeterminate), responded to three elevated temperatures, ELT,(day/night of 34/ 26 °C, 38/30 °C, and 42/34 °C) in comparison to a control growth temperature(30/22 °C). Carbon dioxide(CO_2 ) concentration was maintained at 700 μmol mol~(–1) in each compartment by a processor controlled air-sampling and CO_2 -injection system. Three sequential experiments were conducted at different times of year(summer, autumn, and early spring) to investigate the effect of intensity, timing, and duration of ELT on soybean node number, internode elongation, mainstem length, and number of pods set per plant. At the control temperature, the soybean plants grown in the polycarbonate greenhouse were taller than field-grown plants. When plants were grown under continuous ELT applied soon after sowing or at initial flowering, the number of nodes increased with increasing ELT intensity, whereas the length of individual internodes decreased. When ELT treatment was applied during the beginning of flowering stage(R1–R2) or earlier, more nodes were produced and the length of affected internodes was decreased. When the ELT was imposed later at reproductive stage R5+ just before the beginning of seed filling, effects on node numbers and internode lengths were negligible. Short-term(10-day) duration of ELT applied at four stages from V3 to R5+ did not significantly affect final mean numbers of nodes or mean mainstem lengths. Possible mechanisms of elevated temperature effects on soybean internode elongation and node number(internode number) are discussed. Total pod numbers per plant increased linearly with mainstem node numbers and mainstem length. Furthermore, total pod numbers per plant were greatest at 34/26 °C rather than at the control temperature of 30/22 °C(and remained high at 38/30 °C). Mild increases in temperature might not threaten, but actually increase, yields of soybean in northerly zones where this crop is currently grown at slightly suboptimal temperatures. However, a sustained increase in ambient temperature would likely threaten soybean yields.
Integrated physiological and molecular approaches to improvement of abiotic stress tolerance in two pulse crops of the semi-arid tropics

Chickpea(Cicer arietinum L.) and pigeonpea [Cajanus cajan L.(Millsp.)] play an important role in mitigating protein malnutrition for millions of poor vegetarians living in regions of the semi-arid tropics. Abiotic stresses such as excess and limited soil moisture(water-logging and drought), heat and chilling(high and low temperature stresses), soil salinity, and acidity are major yield constraints, as these two crops are grown mostly under rainfed conditions in risk-prone marginal and degraded lands with few or no inputs. Losses due to such stresses vary from 30% to 100% depending on their severity. The literature abounds in basic information concerning screening techniques, physiological mechanisms, and genetics of traits associated with resistance/tolerance to abiotic stresses in these two crops. However, the final outcome in terms of resistant/tolerant varieties has been far from satisfactory. This situation calls for improving selection efficiency through precise phenotyping and genotyping under high-throughput controlled conditions using modern tools of genomics. In this review, we suggest that an integrated approach combining advances from genetics, physiology, and biotechnology needs to be used for higher precision and efficiency of breeding programs aimed at improving abiotic stress tolerance in both chickpea and pigeonpea.
Spontaneous combustion influenced by surface methane drainage and its prediction by rescaled range analysis

This study established numerical modeling using COMSOL~(TM) to examine the influence of horizontal location and drainage ability of surface borehole on spontaneous combustion in longwall working face gob.Rescaled Range Analysis (R/S analysis) was employed to investigate the chaos characteristic of N_2/O_2 ratio from a surface borehole in 10416 working face gob,Yangliu Colliery,China.The simulation results show that there is always a circular "dissipation zone” around the drainage borehole and an elliptic "spontaneous combustion zone” in deep gob.Little influence was found on spontaneous combustion zone on the intake side of the gob but the width of spontaneous combustion zone in middle gob is enlarged,while the depth of spontaneous combustion zone near the return side is reduced.The R/S analysis indicates that the influence of surface borehole on spontaneous combustion can be divided into two stages by the chaos feature of N_2/O_2:safety drainage stage and spontaneous combustion initiating stage.It can be concluded that the methane drainage from gob through surface borehole can intervene in the distribution of spontaneous combustion zone in gob and the chaos feature of N_2/O_2 from surface borehole can effectively reflect coal spontaneous combustion condition in gob.
Explaining surface interactions for common associated gangues of rare earth minerals in response to the oxalic acid

In the flotation of rare earth minerals (REMs),oxalic acid is reportedly acting both as a depressant and pH modifier.Although results of testing have established the significance of oxalic acid in the flotation process,its specific role in either the recovery or selectivity of REMs over their common gangue minerals is not well understood.Pulp pH reduction trials with alternative acids have not shown the same effect on the REMs recovery or the depression of gangue phases.This work studies the effect of oxalic acid on the surface of common REMs gangue minerals (quartz and carbonates (dolomite and calcite)) in a series of conditioning tests.Gangue surface analyses by time of flight secondary ion mass spectroscopy (TOFSIMS) indicate that oxalic acid inhibits the transfer of secondary ions generated during the conditioning process from one mineral to another.In this regard,the oxalate anion acts to fix ions in solution through chelation,limiting their participation in surface adsorption.
Genome-wide association study of heat stress- tolerance traits in spring-type Brassica napus L. under controlled conditions

High temperatures have a detrimental effect on growth, development, and yield of Brassica napus. Even a short period of heat stress can lead to yield losses of 15%–20%. A collection of spring-type accessions available in Germplasm Resources Information Network(GRIN) were used to assess the effect of short periods of high-temperature stress at the early flowering stage of B. napus. Two sets of accessions with three replications per set were grown in a greenhouse at 22/18 °C day/night temperatures. Plants from the second set at the 6-day flowering stage were exposed to heat-stress conditions(maximum temperature up to 35 °C) in a plant growth chamber for five days. The heat-stressed plants were then allowed to recover in a greenhouse. Pollen sterility, sterile/aborted pods, and number of pods on main raceme were recorded for both control(set 1) and heat stressed(set 2) plants. Heat susceptibility indices for all three traits were calculated and an association-mapping study was conducted using 37,539 Single Nucleotide Polymorphisms(SNPs) to identify genomic regions controlling the heat stress traits. A total of 5, 8, and 7 quantitative trait loci(QTL) were associated with pollen sterility, sterile/aborted pods, and number of pods on main raceme, respectively. Together they explained respectively 46.3%, 60.5%, and 60.6% of phenotypic variation. Candidate genes in the QTL regions included genes associated with flowering, male sterility, pollen abortion, embryo abortion reducing pollen development, and pod development.
Experimental investigation on dilatancy behavior of water-saturated sandstone

It is important to study the dilatancy property of water-saturated rock for understanding the engineering behavior of loaded rock mass.This study carried out the uniaxial and triaxial compressive experiments on the water-saturated red sandstone,analyzed the influences of confining pressure and pore pressure on dilatancy property of water-saturated rock,and discussed the reasonable basis of the stress of dilatancy onset as a strength design parameter of rock engineering,finally established the prediction model of the stress of dilatancy onset under the impacts of confining pressure and pore pressure.The results show that the strength parameters (the stress of dilatancy onset and peak strength) and deformation parameters (axial strain and circumferential strain) of water-saturated sandstone increase with the confining pressure,and the relations can be fitted with a positive linear function.The cohesion and internal friction angle obtained from the stress of dilatancy onset decrease by 11.57% and 7.33%,respectively,when compared with those obtained from the peak strength.The strength parameters and deformation parameters of water-saturated sandstone decrease basically with the increase of pore pressure,in which the relations between strength parameters or axial strain and pore pressure can be fitted with a negative linear function.However,the relation between the peak circumferential strain and the pore pressure should be characterized by a negative exponential function,and the circumferential strain at dilatancy onset isn't affected by the pore pressure.
A new hybrid decision support tool for evaluating the sustainability of mining projects

The integration of sustainable development challenges and opportunities into the decision making process during the design and/or implementation of multi-disciplinary mining projects is generally not supported by decision support systems (DSS).A new hybrid decision support tool,which features an integrated assessment of sustainable development issues as they apply to mining projects,is hereby proposed.The proposed DSS framework,named "Acropolis DSS”,can be used to assist involved stakeholders in critical decisions,especially when addressing issues such as stakeholder participation,transparency,and trade-offs.The proposed DSS is based on a multi-criteria decision analysis combined with the multi-attribute utility theory.
Effect of pyrite content of feed and configuration of locked particles on rougher flotation of copper in low and high pyritic ore types

Misreported pyrite into copper concentrates dramatically declines copper grade and recovery.Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore.In this investigation,the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit.Samples were taken from different streams and the structure of chalcopyrite within the pyrite and non-sulfide gangue minerals was examined in various size fractions for mentioned ore types.Results indicated that 72% and 56% of the total floated pyrite was transferred to concentrate in first four cells in the low and high pyritic feeds,respectively.Whereas,this proportion for floated SiO_2 in last ten cells was detected as 72% and 71%,respectively.A detailed interpretation of the effect of locked particles in different size fractions on rougher flotation cells is studied from industrial point of view.
Evaluation of seismic potential in a longwall mine with massive sandstone roof under deep overburden

A recent seismic event was recorded by a deep longwall mine in Virginia at 3.7 ML on the local magnitude scale and 3.4 MMS by the United States Geological Survey (USGS) in 2016. Further investigations by the National Institute for Occupational Safety and Health (NIOSH) and Coronado Coal researchers have shown that this event was associated with geological features that have also been associated with other, similar seismic events in Virginia. Detailed mapping and geological exploration in the mining area has made it possible to forecast possible locations for future seismic activity. In order to use the geology as a forecaster of mining-induced seismic events and their energy potential, two primary components are needed. The first component is a long history of recorded seismic events with accurately plotted locations. The second component is a high density of geologic data within the mining area. In this case, 181 events of 1.0 ML or greater were recorded by the mine's seismic network between January, 2009, and October, 2016. Within the mining area, 897 geophysical logs, 224 core holes, and 1031 fiberscope holes were examined by mine geologists. From this information, it was found that overburden thickness, sandstone thickness, and sandstone quality contributed greatly to seismic locations. After the data was analyzed, a pattern became apparent indicating that the majority of seismic events occurred under specific conditions. Three forecast maps were created based on geology of previous seismic locations. The forecast maps have shown an accuracy of within 74%–89 %when compared to the recorded 181 events that were 1.0ML or greater when considering three major geological criteria of overburden thickness of 579.12 mor greater, 6.096–12.192 m of sandstone within 15.24 m of the Pocahontas number 3 seam, and a longwall caving height of 4.572 m or less.
Fundamental principles of an effective reinforcing roof bolting strategy in horizontally layered roof strata and areas of potential improvement

It is arguable that the development of reinforcing roof bolting systems has largely stagnated in recent times, primarily due to the prevailing industry view that few, if any, further improvements can be made to what currently exists. However, this paper contends that reinforcing roof bolting systems can be further refined by considering both the specific manner by which horizontally bedded roof strata loses its natural self-supporting ability and the specific means by which reinforcing roof bolts act to promote or retain this natural self-supporting ability. The Australian coal industry has insisted on minimising bolt-hole diameter to maximise load transfer and on targeting full-encapsulation by any means necessary for many years. This has led to a significant, albeit unintended, consequence in terms of overall roof bolting effectiveness, namely increased resin pressures during bolt installation and the associated potential for opening bedding planes that may have, otherwise, remained closed during the bolt installation process. Given that the natural self-supporting ability of roof strata is strongly linked to whether bedding planes are open or closed, logically, minimising resin pressures should be a significant benefit. This paper focuses primarily on three key issues that relate directly to the function of the roof bolting system itself: (1) the importance of proper resin mixing in the context of maximising load transfer strength and stiffness, (2) the importance of minimising resin pressures developed during bolt installation, and (3) the importance of maximising the effectiveness of the available bolt pre-tension. All mine operators should be invested in improving the individual effectiveness of each installed roof bolt, even by relatively small incremental amounts, so this is an important topic for discussion within the mining community.
Tekcrete Fast®: Fiber-reinforced, rapid-setting sprayed concrete for rib and surface control

Fiber-reinforced spayed concrete has been used for several years in civil and tunneling operations. Research conducted to reduce cure times and increase compressive and flexural strengths resulted in the development of Tekcrete Fast®, a cementitious product capable of obtaining 41 MPa compressive strength and 8 MPa flexural strength in only 3 h and reaching 7 d strengths of 62 and 11.7 MPa, respectively. A single bag product that uses conventional shotcrete and gunite application systems makes it a natural crossover product for mining applications. The discovery of incredible adhesion properties and high resistance to chloride permeability helps ensure long-term stability and increases the ease of application. Project results from Disaster City® in Texas and the application for rehabilitating a coal mine belt entry are presented. The case study illustrates the effectiveness of the product in stabilizing a coal mine beltway and adjacent cross-cuts that were subjected to progressive sloughage due to humidity and cyclical loading.
Analysis of monitored ground support and rock mass response in a longwall tailgate entry

A comprehensive monitoring program was conducted to measure the rock mass displacements, support response, and stress changes at a longwall tailgate entry in West Virginia. Monitoring was initiated a few days after development of the gateroad entries and continued during passage of the longwall panels on both sides of the entry. Monitoring included overcore stress measurements of the initial stress within the rock mass, changes in cable bolt loading, standing support pressure, roof deformation, rib deformation, stress changes in the coal pillar, and changes in the full three-dimensional stress tensor within the rock mass at six locations around the monitoring site. During the passage of the first longwall, stress measurements in the rock and coal detected minor changes in loading while minor changes were detected in roof deformation. As a result of the relatively favorable stress and geological conditions, the support systems did not experience severe loading or rock deformation until the second panel approached within 10–15 mof the instrumented locations. After reaching the peak loading at about 50–75 mm of roof sag, the cable bolts started to unload, and load was transferred to the standing supports. The standing support system was able to maintain an adequate opening inby the shields to provide ventilation to the first crosscut inby the face, as designed. The results were used to calibrate modeled cable bolt response to field data, and to validate numerical modeling procedures that have been developed to evaluate entry support systems. It is concluded that the support system was more than adequate to control the roof of the tailgate up to the longwall face location. The monitoring results have provided valuable data for the development and validation of support design strategies for longwall tailgate entries.
Tsallis' quantum q-fields

We generalize several well known quantum equations to a Tsallis' q-scenario,and provide a quantum version of some classical fields associated with them in the recent literature. We refer to the q-Schrodinger, q-Klein-Gordon,q-Dirac, and q-Proca equations advanced in, respectively, Phys. Rev, Lett. 106, 140601 (2011),EPL 118, 61004 (2017) and references therein. We also introduce here equations corresponding to q-Yang-Mills fields,both in the Abelian and non-Abelian instances. We show how to define the q-quantum field theories corresponding to the above equations,introduce the pertinent actions,and obtain equations of motion via the minimum action principle. These q-fields are meaningful at very high energies (TeV scale) for q=1.15, high energies (GeV scale) for q=1.001, and low energies (MeV scale) for q=1.000001 [Nucl. Phys. A 955 (2016) 16 and references therein]. (See the ALICE experiment at the LHC). Surprisingly enough, these q-fields are simultaneously q-exponential functions of the usual linear fields' logarithms.
User Association and Wireless Backhaul Bandwidth Allocation for 5G Heterogeneous Networks in the Millimeter-Wave Band

The user association and wireless backhaul bandwidth allocation for a two-tier heterogeneous network (HetNet) in the millimeter wave (mmWave) band is proposed in this article. The two-tier HetNet is built up with a macro base station (MBS) and several small cell SBSs, where the MBS is assumed to be equipped with large-scale antenna arrays but the SBSs only have single-antenna capability and they rely on the wireless link to the MBS for backhaul. The sum of logarithmic user rate, which is established according to the result of multi-user Multiple Input Multiple Output (MIMO) downlink employing Zero-Force Beamforming (ZFBF), is chosen as the network utility for the objective function. And a distributed optimization algorithm based on primal and dual decomposition is used to jointly optimize the user association variable x_(j,i) and the wireless backhaul bandwidth factor β. Simulation results reveal that the distributed optimization algorithm jointly optimizing two variables outperforms the conventional SINR-based user association strategies.
Privacy-Preserving Prepayment Based Power Request and Trading in Smart Grid

Demand response has been intensively studied in recent years. It can motivate customers to change their consumption patterns according to the dynamic (time-varying) electricity price, which is considered to be the most cost-effective and reliable solution for smoothing the demand curve. However, many existing schemes, based on users' demand request in each period, require users to consume their requested electricity exactly, which sometimes causes inconvenience and losses to the utility, because customers cannot always be able to consume the accurate electricity demand due to various personal reasons. In this paper, we tackle this problem in a novel approach. Instead of charging after consumption, we adopt the prepayment mechanism to implement power request. Furthermore, we propose a trading market running by the control center to cope with the users' dynamic demand. It is noteworthy that both users' original demand and trading records are protected against potential adversaries including the curious control center. Through the numerical simulation, we demonstrate that our scheme is highly efficient in both computation and communication.
Simultaneous multiple coronary arteries thrombosis in patients with STEMI

Simultaneous thrombosis affecting more than one coronary artery has been reported to occur in about 4.8% of the cases at the time primary percutaneous coronary intervention (PCI). Simultaneous multiple coronary arteries thrombosis is uncommon and can lead to a fatal outcome. Careful attention should be given to identification of abnormal ECG and coronary angiography (CAG) results. The affected vessel should be opened timely and efficiently in an effort to save the myocardium and reduce serious complications such as congestive heart failure, ventricular arrhythmia, cardiogenic shock, or sudden cardiac death.
Effect of low-temperature plasma on the degradation of omethoate residue and quality of apple and spinach

Dielectric barrier corona discharge was developed to generate low-temperature plasma(LTP) to treat apple and spinach samples contaminated with omethoate. Experimental results showed that, after 20 min exposure, the degradation rate of omethoate residue in apple and spinach was(94.55 ± 0.01)% and(95.55 ± 0.01)%, respectively. When the treatment time was shorter than 20 min, the contents of moisture, vitamin C and beta-carotene were not affected by LTP. Exploration of related mechanisms suggested that LTP might destroy unsaturated double bonds of omethoate and produce phosphate ion, eventually leading to omethoate destruction. It is concluded that appropriate dosage of LTP can effectively degrade omethoate residue in fruits and vegetables without affecting their quality.
双臂空间机器人捕获目标过程的协调操作滑模控制

空间机器人捕获目标的双臂协调操作控制复杂,要考虑机械臂与基座的协调运动控制及双臂对目标夹持内力控制。根据闭链动力学模型,设计一种基于干扰观测器的滑模控制算法,对捕获目标后空间机器人漂浮基座姿态、机械臂关节角及双臂对目标夹持内力进行协调操作控制。仿真试验表明双臂协调操作滑模控制可以克服未知干扰且具有较强的鲁棒性。
不同定子铁心材料对永磁同步电机铁耗的影响

为分析不同定子材料时的永磁同步电机铁心损耗的大小及分布趋势,对比了B20AT1200及Metglas2605SA1两种不同材料定子铁心的损耗分布。以一台8极48槽50kW的内嵌式永磁同步电机(Interior Permanent Magnet Synchronous Motor, IPM)为对象,借助Ansoft Maxwell有限元方法对硅钢带材及非晶带材永磁电机损耗分布分别进行了分析。结果显示, 50kW的硅钢片永磁同步电机铁心损耗为300.9412W,非晶合金永磁同步电机铁心损耗为100.6233W,铁心损耗下降了66.56%;将定子铁心划分成齿顶、齿身、齿根和铁轭四个部位,两种不同材料电机铁心损耗主要分布均在齿身和铁轭部位,齿顶部位由于体积小所占损耗比重最低。损耗结果同实际情况一致,验证了铁心损耗计算的有效性。