mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Classification of oil palm female inflorescences anthesis stages using machine learning approaches

Prediction of pollination stages in oil palm plantations is an important research area in precision agriculture. Oil palm is known as the most efficient commercial crop with the capacity to fulfill the growing global demand for vegetable oil consumption. However, oil palm production dependence on pollination is experiencing issues with decreasing the actual yield. Consequently, alternative methods in commercial plantations such as humanassisted pollination and recently Wireless Sensor Network (WSN) have been deployed despite their high economic costs due to labor requirements. Oil palm assisted pollination requires precision, inspection, traceability, and validation processes in the field. Currently, all these processes are performed by humans that can be associated with false assumptions, uncertainty, and pollination latency. Therefore, Machine Learning (ML) approaches as a subset of the Artificial Intelligence (AI) domain provides efficient, cost-effective, and non-destructive solutions to determine these reproductive stages for future autonomous pollination system. Our goal was to reduce the variability of worker's performance in oil palms, using ML algorithms to make expert decisions and reduce the risk related to a transient workforce. This comparative empirical study examined and compared the performance of the Random Forest (RF) against k Nearest Neighbor (kNN) and Support Vector Machine (SVM) for classification of oil palm pre-anthesis and anthesis stages, dividing into four classes (1, 2, 3, and 4). These models were tested using thermal features (endogenous) individually and in combination with meteorological variables (exogenous). The performance of models is evaluated with specific measures of performance, such as overall user's and producer's accuracies and F-measure values derived from the confusion matrix. The results showed that the RF model produced better results with regard to average Fmeasure (88.6%, 71.83%), producer's accuracies (88.70%, 71.35%), and user's accuracies (88.27%, 72.36%) on test sets using exogenous + exogenous and endogenous feature sets, respectively. Among the three classifiers tested with two datasets, the RF method outperforms the other two popular algorithms, i.e., kNN and SVM with respect to accuracy and F-measure metrics. The results validated the significance of thermal parameters, provided valuable features to devise an intelligent pollination management system, and proved the feasibility of using the RF model for the classification of oil palms four stages of anthesis.
A pilot study of the dynamics of tissue oxygenation in vivo using time-resolved phosphorescence imaging

Oxygenation of tissues plays an important role in the development and progression of tumor to treatment effects. Method of metalloporphyrines phosphorescence quenching by oxygen is one of the ways to measure dynamics of the oxygen concentration in the tissues by phosphorescence lifetime imaging of meso-tetra(sulfopheny1)tetrabenzoporphyrin Pd (II) (TBP) using the timecorrelated single photon counting (TCSPC) method. It has been shown that phosphorescence lifetime of the sensor in S37 tumor in vivo varied in the range of 130 to 290 μs after both topical and intravenous administration of TBP. It indicates that oxygen level in tumors was lower compared to normal tissues where TBP phosphorescence has not been detected. Phosphorescence lifetimes of TBP increased in the solid tumor and in the muscle after photodynamic therapy of solid tumor that demonstrates oxygen consumption during treatment and possibly stopping the blood flow and hence the oxygen supply to the tissues.
Swept source intraoperative OCT angiography

To accurately guide surgical instruments during ophthalmic procedures, some necessary intraoperative depth perception is required, which standard surgical microscopes supply limitedly. Intraoperative optical coherence tomography (iOCT), combining optical coherence tomography (OCT) technology and surgical microscope, enables noninvasive, real-time and highresolution cross-sectional imaging. Currently, though iOCT enables structural imaging, little research has been done on intraoperative angiography. In this work, we presented a swept-source intraoperative OCT angiography (SS-iOCTA) system based on a standard surgical microscope, which provides both structural and angiographic images. The feasibility of the proposed SSiOCTA was confirmed through deep anterior lamellar keratoplasty (DALK) of ex vivo porcine eyes and blood perfusion imaging of in vivo rat cortex. High-resolution intraoperative feedback, including sub-surface structure and angiogram of biological tissue, can be visualized simultaneously with the SS-iOCTA system, which expand the surgeon's capabilities and could be widely used in clinical surgery.
基于ANSYS的隔离开关用绝缘拉杆电场分析

基于ANSYS某252kV六氟化硫封闭式组合电器(GIS)隔离开关设计了三种结构形式的绝缘拉杆,进行了电场强度计算,获得了隔离开关内部的电场分布云图,将这些计算结果与相应的设计允许值进行比较分析并进行了样机试验验证,结果表明:绝缘拉杆的结构形式对隔离开关内部导体电场分布及最大场强值影响很小,对其自身的电场强度分布影响巨大。综合设计分析、样机试验和制造因素,最终的优选方案为椭圆型绝缘拉杆,为隔离开关用绝缘拉杆的设计提供理论指导和设计参考。
Belzutifan(Welireg)

Belzutifan是由默沙东公司研发的一种选择性缺氧诱导因子-2α(HIF-2α)抑制剂,于2021年8月13日经美国FDA批准上市,商品名为Welireg,主要用于治疗希佩尔·林道综合征(VonHippel-Lindau disease,VHL综合征)以及与VHL综合征相关的肾细胞癌(RCC) 、中枢神经系统(CNS)血管母细胞瘤和胰腺神经内分泌肿瘤(pNET)。
~(131)I治疗分化型甲状腺癌患者被服清洁解控的研究进展

对清洁解控的概念及相关标准、被服清洁解控的必要性以及国内外被服清洁解控的现状进行综述,探讨目前国内外针对~(131)I治疗分化型甲状腺癌患者被服清洁解控的不足以及对未来的展望,为临床工作中实施规范、合理的被服清洁解控程序以及进一步开展相关研究提供参考。
Human caring for patients suffering from major infectious disease-nurses' entire use of self

Human caring is regarded as the essence and core of nursing.Based on Dr. Watson's human caring science theory, nursing staff in Wuhan Union Hospital and other healthcare institutions have delivered warm human caring service in patients' daily care.During the outbreak of major infectious disease-pandemic of COVID-19, patients are suffering from great psychological distress and pressure.Like nursing professionals around the world, nurses in Wuhan, Hubei, China, along with the colleagues from the National Aid Medical Team, used entire of themselves to conduct diversity human caring measures to patients suffering from the major infectious disease with love and responsibilities, which greatly demonstrated the essence and value of nursing care, and has wide implications for further development of nursing.
Stability analysis of seabed strata and casing structure during the natural gas hydrates exploitation by depressurization in horizontal wells in South China Sea

Natural gas hydrates (NGHs) are a new type of clean energy with great development potential. However, it is urgent to achieve safe and economical NGHs development and utilization. This study established a physical model of the study area using the FLAC~(3D) software based on the key parameters of the NGHs production test area in the South China Sea, including the depressurization method, and mechanical parameters of strata, NGHs occurrence characteristics, and the technological characteristics of horizontal wells. Moreover, this study explored the law of influences of the NGHs dissociation range on the stability of the overburden strata and the casing structure of a horizontal well. The results are as follows. With the dissociation of NGHs, the overburden strata of the NGHs dissociation zone subsided and formed funnelshaped zones and then gradually stabilized. However, the upper interface of the NGHs dissociation zone showed significant redistribution and discontinuity of stress. Specifically, distinct stress concentration and corresponding large deformation occurred in the build-up section of the horizontal well, which was thus prone to suffering shear failure. Moreover, apparent end effects occurred at the end of the horizontal well section and might cause the deformation and failure of the casing structure. Therefore, it is necessary to take measures in the build-up section and at the end of the horizontal section of the horizontal well to prevent damage and ensure the wellbore safety in the long-term NGHs exploitation.
Hydrate phase transition and seepage mechanism during natural gas hydrates production tests in the South China Sea: A review and prospect

Natural gas hydrates (NGHs) are globally recognized as an important type of strategic alternative energy due to their high combustion efficiency, cleanness, and large amounts of resources. The NGHs reservoirs in the South China Sea (SCS) mainly consist of clayey silts. NGHs reservoirs of this type boast the largest distribution range and the highest percentage of resources among NGHs reservoirs in the world. However, they are more difficult to exploit than sandy reservoirs. The China Geological Survey successfully carried out two NGHs production tests in the Shenhu Area in the northern SCS in 2017 and 2020, setting multiple world records, such as the longest gas production time, the highest total gas production, and the highest average daily gas production, as well as achieving a series of innovative theoretical results. As suggested by the in-depth research on the two production tests, key factors that restrict the gas production efficiency of hydrate dissociation include reservoir structure characterization, hydrate phase transition, multiphase seepage and permeability enhancement, and the simulation and regulation of production capacity, among which the hydrate phase transition and seepage mechanism are crucial. Study results reveal that the hydrate phase transition in the SCS is characterized by low dissociation temperature, is prone to produce secondary hydrates in the reservoirs, and is a complex process under the combined effects of the seepage, stress, temperature, and chemical fields. The multiphase seepage is controlled by multiple factors such as the physical properties of unconsolidated reservoirs, the hydrate phase transition, and exploitation methods and is characterized by strong methane adsorption, abrupt changes in absolute permeability, and the weak flow capacity of gas. To ensure the long-term, stable, and efficient NGHs exploitation in the SCS, it is necessary to further enhance the reservoir seepage capacity and increase gas production through secondary reservoir stimulation based on initial reservoir stimulation. With the constant progress in the NGHs industrialization, great efforts should be made to tackle the difficulties, such as determining the microchange in temperature and pressure, the response mechanisms of material-energy exchange, the methods for efficient NGHs dissociation, and the boundary conditions for the formation of secondary hydrates in the large-scale, long-term gas production.
Mechanism and control technology of strong ground pressure behaviour induced by high-position hard roofs in extra-thick coal seam mining

This work aimed at revealing the mechanism of strong ground pressure behaviour (SGPB) induced by high-position hard roof (HHR).Based on the supporting structures model of HHR,a modified voussoir beam mechanical model for HHR was established by considering the gangue support coefficient,through which the modified expressions of limit breaking span and breaking energy of HHR were deduced.Combined with the relationship between the dynamic-static loading stress of supporting body (hydraulic support and coal wall) and its comprehensive supporting strength,the criteria of ground pressure behaviour (GPB) induced by HHR were discussed.The types of I1,I2,Ⅱ1,and Ⅱ2 of GPB were interpreted.Results showed that types I1 and I2 were the main forms of SGPB in extra-thick coal seam mining.The main manifestation of SGPB was static stress,which was mainly derived from the instability of HHR rather than fracture.Accordingly,an innovative control technology was proposed,which can weaken static load by vertical-well separated fracturing HHR.The research results have been successfully applied to the 8101 working face in Tashan coal mine,Shanxi Province,China.The results of a digital borehole camera observation and stress monitoring proved the rationality of the GPB criteria.The control technology was successful,paving the way for new possibilities to HHR control for safety mining.
Selective depression action of taurine in flotation separation of specularite and chlorite

Chlorite,as the most representative gangue mineral associated with specularite,of which the separation of these two minerals is difficult.This paper investigated the depression effect of taurine on specularite/chlorite separation via flotation experiments,adsorption tests,contact angle measurements,Zeta potential detection,FT-IR measurements,and XPS analyses.The results of single mineral flotation indicated that chlorite could be depressed selectively by taurine with the recovery of less than 30%,but the floatability of specularite remains high with recovery rate of 81.77% at pH 10.The artificial mixed mineral flotation results confirmed the effectiveness of taurine as a depressant.Surface adsorption,contact angle,and Zeta potential detection revealed taurine primarily adsorbs on the chlorite surface,which hampered the DDA's subsequent adsorption and results in the chlorite's poor floatability.The FT-IR spectra and XPS analyses provided further proof that taurine adsorbed on chlorite surface as an electron donor,and part of the electrons transferred from the sulfonic acid group of taurine to metal ions during the adsorption process.In addition,the hydrogen bond between amino-group of taurine and O ions in chlorite surface was also formed in the adsorption process.Finally,optimized adsorption configurations of taurine on chlorite surfaces were proposed.
Resilience in Agriculture:Communication and Energy Infrastructure Dependencies of German Farmers

Agriculture is subject to high demands regarding resilience as it is an essential component of the food production chain.In the agricultural sector,there is an increasing usage of digital tools that rely on communication and energy infrastructures.Should disruption occur,such strengthened dependencies on other infrastructures increase the probability of ripple effects.Thus,there is a need to analyze the resilience of the agricultural sector with a specific focus on the effects of digitalization.This study works out resilience capacities of the interconnected technologies used in farm systems based on the experiences and opinions of farmers.Information was gathered through focus group interviews with farmers (N = 52) and a survey with participants from the agricultural sector (N = 118).In particular,the focus is put on the digital tools and other information and communication technologies they use.Based on a definition of resilience capacities,we evaluate resilience regarding energy and communication demands in various types of farm systems.Especially important are the resilience aspects of modern systems' digital communication as well as the poorly developed and nonresilient network infrastructure in rural areas that contrast with the claim for a resilient agriculture.The result is a low robustness capacity,as our analysis concludes with the risk of food production losses.
Spatiotemporal variations and driving factors of habitat quality in the loess hilly area of the Yellow River Basin:A case study of Lanzhou City,China

Rapid industrialization and urbanization have led to the most serious habitat degradation in China,especially in the loess hilly area of the Yellow River Basin,where the ecological environment is relatively fragile.The contradiction between economic development and ecological environment protection has aroused widespread concern.In this study,we used the habitat quality of Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST-HQ) model at different scales to evaluate the dynamic evolution characteristics of habitat quality in Lanzhou City,Gansu Province of China.The spatiotemporal variations of habitat quality were analyzed by spatial autocorrelation.A Geographical Detector (Geodetector) model was used to explore the driving factors that influencing the spatial differentiation of habitat quality,including natural factors,socio-economic factors,and ecological protection factors.The results showed that the habitat quality index of Lanzhou City decreased from 0.4638 to 0.4548 during 2000-2018.The areas with reduced the habitat quality index were mainly located in the Yellow River Basin and Qinwangchuan Basin,where are the main urban areas and the new economic development areas,respectively.The spatial distribution of habitat quality presented a trend of high in the surrounding areas and low in the middle,and showed a significant positive spatial autocorrelation.With the increase of study scale,the spatial distribution of habitat quality changed from concentrated to dispersed.The spatial differentiation of habitat quality in the study area was the result of multiple factors.Among them,topographic relief and slope were the key factors.The synergistic enhancement among these driving factors intensified the spatial differentiation of habitat quality.The findings of this study can provide a scientific basis for land resources utilization and ecosystem restoration in the arid and semi-arid land.
Nonfullerene acceptors based on perylene monoimides

Nonfullerene organic solar cells (NF-OSCs) have become a research hotspot, and the device efficiency has been constantly updated. The efficiency of binary and ternary solar cells has exceeded 18% and 19%, respectively. In the early study of OSCs, the development of organic acceptors lagged behind that of organic donors. In addition to the common fullerene acceptors PC_(61)BM and PC_(71)BM, there is growing interest in developing new electron acceptors. The two fullerene acceptors were derived from C_(60) and C_(70), which were chemically modified to improve the solubility. Later, Li et al. developed a C_(60) derivative ICBA and a C_(70) derivative IC_(70)BA. Compared with PC_(61)BM and PC_(71)BM, the lowest unoccupied molecular orbital (LUMO) levels of these two acceptors increased by 0.17 and 0.19 eV, respectively. This is conducive to the increase of open-circuit voltage (V_(oc)). At present,the development of fullerene acceptors is limited, the reason are as follows: (1) they show weak absorption in the visible region,which is not conducive to the full use of sunlight; (2) it is difficult to improve the absorption by the chemical modification; (3) difficult chemical synthesis and high cost; (4) it is difficult to control the morphology, and the aggregation easily takes place in thin films. The advantages of fullerene acceptors are also obvious, e.g., (1) fullerene acceptors can accept and transport electrons in three dimensions due to their delocalized LUMO; (2) high electron mobility. Perylene diimides (PDIs) have been widely used in biological imaging, and they are widely-studied non-fullerene acceptors. PDIs have many advantages,such as high electron mobility and high electron affinity[ 21]. In 1986, C. W. Tang of Kodak prepared two-layer OSCs by depositing copper phthalocyanine (CuPc) as the donor and perylene tetracarboxylic derivative (PV) as the accepter in vacuo, achieving a power conversion efficiency (PCE) of 1%. PDI-based devices were made by solution processing,and the aggregation yielded micron-sized crystals. When the acceptors were blended with donors, large domains formed. Since exciton diffusion length and life were limited, the domain size should be well controlled.
The emerging roles of retromer and sorting nexins in the life cycle of viruses

Retromer and sorting nexins (SNXs) transport cargoes from endosomes to the trans-Golgi network or plasma membrane. Recent studies have unveiled the emerging roles for retromer and SNXs in the life cycle of viruses, including members of Coronaviridae, Flaviviridae and Retroviridae. Key components of retromer/SNXs, such as Vps35, Vps26, SNX5 and SNX27, can affect multiple steps of the viral life cycle, including facilitating the entry of viruses into cells, participating in viral replication, and promoting the assembly of virions. Here we present a comprehensive updated review on the interplay between retromer/SNXs and virus, which will shed mechanistic insights into controlling virus infection.
Regulation of nitrogen starvation responses by the alarmone (p)ppGpp in rice

Nitrogen is an essential macronutrient for all living organisms and is critical for crop productivity and quality. In higher plants, inorganic nitrogen is absorbed through roots and then assimilated into amino acids by the highly conserved glutamine synthetase/glutamine:2-oxoglutarate aminotransferase (GS/GOGAT) cycle. How nitrogen metabolism and nitrogen starvation responses of plants are regulated remains largely unknown. Previous studies revealed that mutations in the rice ABNORMAL CYTOKININ RESPONSE1 (ABC1) gene encoding Fd-GOGAT cause a typical nitrogen deficiency syndrome. Here, we show that ARE2 (for ABC1 REPRESSOR2) is a key regulator of nitrogen starvation responses in rice. The are2 mutations partially rescue the nitrogen-deficient phenotype of abc1 and the are2 mutants show enhanced tolerance to nitrogen deficiency, suggesting that ARE2 genetically interacts with ABC1/Fd-GOGAT. ARE2 encodes a chloroplast-localized RelA/SpoT homolog protein that catalyzes the hydrolysis of guanosine pentaphosphate or tetraphosphate (p)ppGpp, an alarmone regulating the stringent response in bacteria under nutritional stress conditions. The are2 mutants accumulate excessive amounts of (p)ppGpp, which correlate with lower levels of photosynthetic proteins and higher amino acid levels. Collectively, these observations suggest that the alarmone (p)ppGpp mediates nitrogen stress responses and may constitute a highly conserved mechanism from bacteria to plants.
Rotary axis calculation for five-axis FDM printer using a point-fitting optimization method

This paper presents an optimization method to compute the rotary axes of a 5-axis FDM printer whose A-and C-axes have large deviations relative to the x-and z-directions. The optimization model is designed according to the kinematic model in which a point rotates around a spatial line in the machine coordinate system of the printer. The model considers the A-and C-axes as two spatial lines. It is a two-object optimization model including two aspects. One is that the sum of deviations between the measured and computed points should be small; the other is that the deviations should be uniformly distributed for every measured point. A comparison of the new optimization method with conventional error-compensation methods reveals that the former has higher location accuracy. Using the optimized AC axes, 5-axis 3D printing paths are planned for some complex workpieces. Data analysis and printing samples show that the optimized AC axes satisfy 5-axes FDM printing requirements for nozzles with a diameter of 1.0 mm.
Genipin and geniposide from Gardenia jasminoides:An overview of their anti-cancer and other pharmacological properties

Genipin and geniposide are iridoids from the fruits of Gardenia jasminoides.Both compounds have a methyl acetate (-COOCH_3) group at C4 and a hydroxyl (-OH) group at C10.As an iridoid glucoside with a glucose moiety at C1,geniposide is also known as genipin-1-O-β-D-glucoside.Without the glucose moiety,genipin is an iridoid and the aglycone of geniposide.The -OH group at C1 of genipin is responsible for its cytotoxic effects.Geniposide without the -OH group at C1 lacks the cytotoxic effects.There are more publications on the anti-cancer properties of genipin than geniposide.Studies have reported the potentiation of genipin when used in combination with anti-cancer drugs.The anti-cancer properties of geniposide have been investigated using human intestinal microflora that hydrolyzes geniposide to genipin.Both genipin and geniposide exert anti-proliferative and apoptotic activities via different molecular targets and pathways.Other pharmacological properties of genipin and geniposide include antidepressant,antidiabetic,anti-inflammatory,anti-obesity,anti-thrombotic,hepatoprotective,and neuroprotective activities.Future research on genipin and geniposide is suggested.