mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Fast Determination of the Rubber Content in Taraxacum kok-saghyz Fresh Biomass Using Portable Near-Infrared Spectroscopy and Pyrolysis-Gas Chromatography

Taraxacum kok-saghyz (TKS) is a plant native to the Tianshan valley on the border between China and Kazakhstan.TKS rubber is a good substitute for natural rubber.TKS's breeding work necessitates the need to screen high-yielding varieties,hence rapid determination of rubber content is essential for the screening.Conventional analytical methods cannot meet actual needs in terms of real-time testing and economic cost.Near-infrared spectroscopy analysis technology,which has developed rapidly in the field of industrial process analysis in recent years,is a green detection technology with obvious merits of fast measurement speed,low cost and no sample loss.This research aims to develop a portable non-destructive near-infrared spectroscopic detection scheme to evaluate the content of natural rubber in TKS fresh roots.Pyrolysis gas chromatography (Py-GC) was chosen as the reference method for the development of NIR prediction model.208 TKS fresh root samples were collected from the Inner Mongolia Autonomous Region of China.Near-infrared spectra were acquired for all samples.Randomly,two-thirds of them were selected as the calibration set,the remaining one-third as the validation set,and the partial least squares method was successfully established a good NIR prediction model for rubber content at 1080-1800 nm with a ratio of performance to deviation (RPD) of 5.54 and coefficient of determination (R~2) of 0.95.This study showed that portable near-infrared spectroscopy could be used with ease for large-scale screening of TKS plants in farmland,and could greatly facilitate TKS germplasm preservation,high-yield cultivation,environment-friendly,high-efficiency and low-cost rubber extraction,and comprehensive advancement of the natural rubber industry thereof.
Optically Detected Magnetic Resonance of Diamond Nitrogen-Vacancy Centers under Megabar Pressures

Megabar pressures are of crucial importance for cutting-edge studies of condensed matter physics and geophysics.With the development of diamond anvil cell (DAC),laboratory studies of high pressure have entered the megabar era for decades.However,it is still challenging to implement in situ magnetic sensing under ultrahigh pressures.In this work,we demonstrate optically detected magnetic resonance and coherent quantum control of diamond nitrogen-vacancy (NV) center,a promising quantum sensor inside the DAC,up to 1.4 Mbar.The pressure dependence of optical and spin properties of NV centers in diamond are quantified,and the evolution of an external magnetic field has been successfully tracked at about 80GPa.These results shed new light on our understanding of diamond NV centers and pave the way for quantum sensing under extreme conditions.
IVF-ET后宫内外复合妊娠并宫外妊娠破裂16例临床分析

宫内外复合妊娠(heterotopic pregnancy, HP)是一种宫内妊娠(intraurerine pregnancy, IUP)和异位妊娠(ectopic pregnancy, EP)同时存在的病理性多胎妊娠疾病,最常见的宫外妊娠部位是输卵管。在自然受孕状态下发病率为1/30000。但在体外受精-胚胎移植(in-vitro fertilization-embryo transfer, IVF-ET)中发生率上升为1%。宫内外复合妊娠早期一般无特异度症状;随着妊娠周数增加,宫外妊娠胚胎增大,突破周围组织发生破裂,极易引发大出血和低血容量性休克,严重时危及母儿生命。因此,尽早识别和诊断宫内外复合妊娠对维持宫内胎儿的正常妊娠及提高IVF-ET的妊娠预后至关重要。笔者对16例IVF-ET后宫内外复合妊娠并宫外妊娠破裂患者的病例进行回顾性分析以期为临床提供经验借鉴,现报道如下。
高产优质两系杂交水稻新组合大两优172

大两优172是四川丰大农业科技有限责任公司利用安徽丰大种业股份有限公司的两系不育系大丰9S与自育恢复系R17-2配组而成的两系杂交水稻新组合。该组合品质优、产量高、综合农艺性状和抗性较好,2020年8月通过国家农作物品种审定委员会审定。
龙胆泻肝丸(片)中当归掺伪情况研究

目的建立龙胆泻肝丸(片)中独活成分的测定方法,考察该市售制剂中当归原料的独活掺伪情况。方法采用超高效液相串联质谱法(UPLC-MS/ MS), Waters ACQUITY UPLC CSH C_(18)色谱柱(2.1 mm×100 mm, 1.7 μm);流动相0.1%甲酸-乙腈,梯度洗脱;体积流量0.3 mL/ min;柱温30 ℃;采用电喷雾离子源(ESI)进行多反应监测(MRM),扫描方式为正离子模式。结果49批龙胆泻肝丸(片)中有3批检出蛇床子素和二氢欧山芹醇当归酸酯,含量范围分别为0.005 615~ 2.601、0.038 43~ 0.823 2 μg/ g。结论市售龙胆泻肝丸(片)存在当归和独活混用情况。
A mathematical model for the dynamics and control of malaria in Nigeria

Malaria is a life-threatening disease endemic in many African countries especially Nigeria. A mathematical model is used to study the dynamics of malaria in Nigeria. The model incorporates drug resistance, treatment, and the use of mosquito nets as preventive strategies. By fitting the model to data on the incidence of malaria in Nigeria, important parameters associated with the disease dynamics are estimated. Using these estimated parameters, the basic reproduction number is calculated, future dynamics simulated, and those parameters with a large impact on Nigerian malaria determined. Overall, the results indicate that the disease is likely to remain endemic in Nigeria unless better control measures are focused on the dominant resistant strain, treatment is improved and the use of mosquito nets become widespread.
Competitive exclusion of two viral strains of COVID-19

The pandemic COVID-19 has caused severe losses in public health and economy. One of the most difficult problems in prevention of the disease spread is the emergence of new variants. In this paper, a mathematical model is formulated, which captures the main feature of COVID-19 spread with two viral strains. It is shown by analytical method that the model exhibits the competitive exclusion principle, where one viral strain with the larger basic reproduction number is dominant and the viral strain with the smaller reproduction number is excluded. The results are important for the deployment of prevention policy of COVID-19.
Predictive approach of COVID-19 propagation via multipleterms sigmoidal transition model

The COVID-19 pandemic with its new variants has severely affected the whole world socially and economically. This study presents a novel data analysis approach to predict the spread of COVID-19. SIR and logistic models are commonly used to determine the duration at the end of the pandemic. Results show that these well-known models may provide unrealistic predictions for countries that have pandemics spread with multiple peaks and waves. A new prediction approach based on the sigmoidal transition (ST) model provided better estimates than the traditional models. In this study, a multiple-term sigmoidal transition (MTST) model was developed and validated for several countries with multiple peaks and waves. This approach proved to fit the actual data better and allowed the spread of the pandemic to be accurately tracked. The UK, Italy, Saudi Arabia, and Tunisia, which experienced several peaks of COVID-19, were used as case studies. The MTST model was validated for these countries for the data of more than 500 days. The results show that the correlating model provided good fits with regression coefficients (R2) > 0.999. The estimated model parameters were obtained with narrow 95% confidence interval bounds. It has been found that the optimum number of terms to be used in the MTST model corresponds to the highest R~2, the least RMSE, and the narrowest 95% confidence interval having positive bounds.
Rheological study of nanoparticle-based cationic surfactant solutions

Worm-like micelles are of special interest among the many forms of surfactant aggregates because of their usefulness in research and technology. Micelles are elongated, flexible aggregates formed by amphiphilic molecules spontaneously self-organizing in liquids. The nature of the surfactant determines its unique shape, which may be altered by mixing it with other substances or changing physicochemical variables like as temperature, pH, or salinity. The rheology of viscoelastic fluid systems is currently being modified using nanoparticles. This method, which was just introduced about 10 years ago, has shown to be highly promising, producing significant improvements in rheological properties, particularly at reservoir temperatures. The goal of this research is to investigate and assess the rheology of an aqueous cationic surfactant solution based on graphene oxide nanoparticles. The thermodynamics, structure and rheology of nanoparticle-based cationic surfactant solutions were investigated experimentally. According to structural and thermodynamic investigations in surfactant-nanoparticle mixtures, micellenanoparticle interactions arise as physical crosslinks between micelles. The existence of these interactions is shown to generate considerable viscosity and viscoelasticity in wormlike micelles, even when the fluid is Newtonian in the absence of nanoparticles. The viscosity, shear modulus and relaxation time all increase as particle concentration increases. Adding nanoparticles generates a network of micellar entanglements as a result of that. Our results demonstrate that adding nanoparticles to surfactant solutions provides for a one-of-a-kind method of altering fluid rheology under a range of circumstances.
Effects of the number of imidazoline ring and the length of alkyl group chain of imidazoline derivatives on corrosion inhibition of carbon steel in HCl solution: Molecular simulation and experimental validation

The effects of the number of imidazoline ring and the length of alkyl group chain of imidazoline derivatives were investigated using quantum chemical calculation, molecular dynamics simulation and experimental techniques. Three corrosion inhibitors including symmetrical lauric acid imidazoline (SAI), tetracyclic lauric acid imidazoline (LAI), and symmetric stearic acid imidazoline (SPI) were synthesized and their inhibition performance was evaluated using weight loss measurement, electrochemical techniques and surface characterization. The results show that SAI and LAI with the same length of alkyl group chain, LAI with more imidazoline rings could supply a better inhibition performance since the increase of active sites. The increase of active sites attached to the metal surface may also change the distribution of corrosion inhibitor, which could limit inhibition performance improvement. While, SAI and SPI with the same number of imidazoline rings, SPI with longer alkyl group chain shows a better inhibition efficiency due to the better hydrophobic performance of alkyl groups. Among the three inhibitors, SPI shows the best inhibition performance, indicating that the alkyl group chain length affects the inhibition performance more obvious than the number of the imidazoline rings.
Sol-gel approach to low-temperature synthesis of single-phase metastable La_2Ga_3O_(7.5) melilite with enhanced grain-boundary oxide ionic conductivity via a kinetically favorable mechanism

Starting with the stoichiometric and highly homogeneous gel-precursor, single-phase metastable melilite La_2Ga_3O_(7.5), as the end-member of solid solution La_(1+x)Sr_(1-x)Ga_3O_(7+x/2) (0 ≤ x ≤ 1), has been synthesized by solid-state reaction at 700 ℃ for 2 h via a kinetically favorable mechanism and characterized by X-ray diffraction (XRD), Raman, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), AC impedance spectroscopy, etc. It has been revealed that the as-synthesized melilite La_2Ga_3O_(7.5) shows an orthorhombic symmetry with crystal cell parameters a = 11.4690(1) A, b = 11.2825(4) A, and c = 10.3735(4) A, while has more Raman active modes than LaSrGa_3O_7 with a tetragonal structure, which was also synthesized under the same conditions for comparison, but tends to slowly decompose into perovskite LaGaO_3 and Ga_2O_3 when annealed at 700 ℃ for over 20 h driven by its meta-stability. Moreover, the metastable La_2Ga_3O_(7.5) shows a higher XPS binding energy for the excess oxide ions in the crystal structure than those at normal lattice sites. Its intrinsic grain oxide ion conductivity can reach as high as 0.04 and 0.51 mS·cm~(-1) at 550 and 700 ℃, respectively, characterized by a simple Arrhenius relationship ln(sT)-1/T with invariable activation energy, Ea = 1.22 eV, over the temperature range from 300 to 700 ℃, along with an apparent grain boundary conductivity that is about double that from the grains thanks to the clean grain boundaries. This paper provides a new strategic approach to the synthesis of complex oxides that may be of high performance but are difficultly achieved by the conventional ceramic method at high temperatures.
Effect of ammonium based ionic liquids on the rheological behavior of the heavy crude oil for high pressure and high temperature conditions

Heavy crude oil (HCO) production, processing, and transportation forms several practical challenges to the oil and gas industry, due to its higher viscosity. Understanding the shear rheology of this HCO is highly important to tackle production and flow assurance. The environmental and economic viability of the conventional methods (thermal or dilution with organic solvents), force the industry to find an alternative. The present study was constructed to investigate the effect of eco-friendly ionic liquids (ILs) on the HCO's rheology, at high temperature and high pressure. Eight different alkyl ammonium ILs were screened for HCO's shear rheology at the temperatures of 25-100 ℃ and for pressures 0.1-10 MPa. The addition of ILs reduced the HCO's viscosity substantially from 25 to 33% from their original HCO viscosity. Also, it aids to reduce the yield stress to about 15-20% at all the studied experimental conditions. Furthermore, the viscoelastic property of the HCO was studied for both strain-sweep and frequencysweep and noticed the ILs helps to increase HCO's loss modulus (G") by reducing storage modulus (G'), it leads to the reduction of the crossover point around 25-32% than the standard HCO. Mean the ILs addition with HCO converts its solid-like nature into liquid-like material. Besides, the effect ILs chain length was also studied and found the ILs which has lengthier chain length shows better efficiency on the flow-ability. Finally, the microscopic investigation of the HCO sample was analyzed with and without ILs and witnessed that these ILs help to fragment the flocculated HCO into smaller fractions. These findings indicate that the ILs could be considered as the better alternative for efficient oil production, processing, and transportation.
Robust Joule-heating ceramic reactors for catalytic CO oxidation

Joule-heating reactors have the higher energy efficiency and product selectivity compared with the reactors based on radiative heating. Current Joule-heating reactors are constructed with electrically-conductive metals or carbon materials, and therefore suffer from stability issue due to the presence of corrosive or oxidizing gases during high-temperature reactions. In this study, chemicallystable and electrically-conductive (La_(0.80)Sr_(0.20))_(0.95)FeO_3 (LSF)/Gd_(0.1)Ce_(0.9)O_2 (GDC) ceramics have been used to construct Joule-heating reactors for the first time. Taking the advantage of the resistance decrease of the ceramic reactors with temperature increase, the ceramic reactors heated under current control mode achieved the automatic adjustment of heating to stabilize reactor temperatures. In addition, the electrical resistance of LSF/GDC reactors can be tuned by the content of the highconductive LSF in composite ceramics and ceramic density via sintering temperature, which offers flexibility to control reactor temperatures. The ceramic reactors with dendritic channels (less than 100 μm in diameter) showed the catalytic activity for CO oxidation, which was further improved by coating efficient MnO_2 nanocatalyst on reactor channel wall. The Joule-heating ceramic reactors achieved complete CO oxidation at a low temperature of 165 ℃. Therefore, robust ceramic reactors have successfully demonstrated effective Joule heating for CO oxidation, which are potentially applied in other high-temperature catalytic reactions.
Optimization of several surface treatment processes for alleviating fretting damage of a locking pin

The operational safety and reliability of a variable gauge train are affected by the anti-fretting wear performance of the locking mechanism.The main purpose of this study is to optimize the surface treatment process for a locking pin material under actual service conditions to alleviate fretting damage.Based on the two basic principles of surface strengthening and friction reduction,a substrate (AISI 4135 steel) surface was treated by laser quenching (LQ),plasma nitriding (PN),and bonded MoS_2 coating.Systematic fretting wear tests were conducted,and the wear behavior and damage mechanism of various treated surfaces were comprehensively investigated.The results indicate that the wear resistances of the LQ- and PN-treated surfaces were significantly improved,and their main wear mechanisms were abrasive wear,delamination,and oxidation wear.The MoS_2 coating exhibits the lowest friction coefficient and energy dissipation due to its self-lubricating property,but it incurs the highest wear rate and failure in the form of plastic deformation.Furthermore,the rough compound layer with a high hardness on the PN-treated surface is conducive to the formation and maintenance of the third-body contact at the fretting interface,consequently resulting in a significant reduction in wear.An optimal surface treatment process for alleviating fretting damage of the locking pin is recommended via comprehensive evaluation,which provides a reference for the anti-fretting protection of related mechanical components.
The mental health of China and Pakistan, mental health laws and COVID-19 mental health policies: a comparative review

Mental health is one of the major causes of disability worldwide, and mental health problems such as depression and anxiety are ranked among the top 25 leading causes of disease burden in the world. This burden is considerable over the lifetime of both men and women and in various settings and ages. This study aims to compare the mental health status of people in China and Pakistan and to highlight the mental health laws and policies during COVID-19 and afterwards. According to the literature on mental health, before the COVID-19 pandemic, mental health problems increased gradually, but during and after the COVID-19 pandemic, an abrupt surge occurred in mental health problems. To overcome mental health disorders, most (but not all) countries have mental health laws, but some countries ignore mental health disorders. China is one such country that has mental health laws and policies and, during the COVID-19 pandemic, China made beneficial and robust policies and laws, thereby succeeding in defeating the COVID-19 pandemic. The mortality rate and financial loss were also lower than in other countries. While Pakistan has mental health laws and general health policies, the law is only limited to paperwork and books. When it came to COVID-19, Pakistan did not make any specific laws to overcome the virus. Mental health problems are greater in Pakistan than in China, and China's mental health laws and policies are more robust and more widely implemented than those in Pakistan. We conclude that there are fewer mental health issues in China than in Pakistan both before and since the COVID-19 pandemic. China has strong mental health laws and these are robustly implemented, while the mental health law in Pakistan is not applied in practice.
Handgrip strength and the risk of major depressive disorder: a two-sample Mendelian randomisation study

Background Major depressive disorder (MDD) is a common psychiatric disease and a leading cause of disability worldwide. Handgrip strength (HGS) as an objective physical fitness test is a practical index for identifying many diseases. Previous studies drew different conclusions about the relationship between HGS and MDD. Aims We aim to explore whether HGS has an effect on the risk of MDD. Methods HGS-related single-nucleotide polymorphisms identified by a genome-wide association study were used as instrumental variables in this Mendelian randomisation (MR) study. Summary data on MDD were obtained from the Psychiatric Genomics Consortium. Four methods were applied, including inverse variance weighted (IVW), MR Egger, weighted median and weighted mode. Additional sensitivity analyses, including leave-one-out, heterogeneity test, pleiotropy test and confounders identification, were conducted to test the robustness of our results. Results Each 1 kg increase in left HGS is associated with a 21.95% reduction in the risk of MDD (OR_(IVW) = 0.781,95% CI: 0.650 to 0.937,p=0.009),while no significant correlation exists in the estimation of right HGS (p=0.146). Sensitivity analyses demonstrated statistical significance (β_(IVW) =-0.195, p=0.023) after excluding some genetic loci that cause pleiotropy. Conclusions Increased left HGS is associated with a reduced risk of MDD. In the future, it may be used as an index for the clinical screening, observation and treatment of MDD.
Small-Molecule Fluorophores for Near-Infrared llb Imaging and Image-Guided Therapy of Vascular Diseases

Accurate and dynamic visualization of vascular diseases can contribute to restraining further deterioration from diseases in a timely manner. However, visualization is still unable to precisely determine whether and to what extent blood vessels or brain tissues are damaged. Here, we report novel benzobis(1,2,5-thiadiazole)-based second near-infrared region (NIR-II) fluorophores HY1-HY4 with highly twisted structures (55° at the So state), extremely strong aggregation-induced emission (AIE) characteristics (I/Io > 13), and remarkably high fluorescence quantum yields (QYs) (up to 14.45%) in the NIR-II region (>1000 nm) and ~0.27% in the near-infrared IIb window (NIR-IIb, >1500 nm) in aqueous solution. Using NIR-IIb AIE HY4 dots, high-resolution NIR-IIb fluorescence imaging of revascularization and thrombolysis, and real-time feedback of the therapeutic efficacy of Chinese medicine Dengzhan Xixin injection (DXI) on ischemic stroke, were achieved for the first time. In addition, results showed that DXI conferred neuroprotection against cerebral ischemia injury mediated via the angiogenesis pathway. These attractive results provide a new perspective for designing ultrabright NIR-IIb probes for vascular-related phenomena, disease assessment, and precise intraoperative image-guided therapy with a deeper tissue penetration depth and higher resolution.
Enzyme-like C-H Oxidation of Glucosides Promoted by Visible Light

To match nature's prowess at using enzymes to make desired motifs in a regioselective fashion, we explore the use of visible light for the selective oxidation of the hydroxyl group to afford the corresponding ketosaccharide. This highly admirable approach offers several advantages over the enzymatic approach in terms of yields and the scope of substrates. Herein, we report the development of a simple visible-light-promoted selective oxidation of unprotected glucosides that allows for inexpensive access to valuable keto-saccharide building blocks. The method is employed on a variety of different natural and artificial glucosides, is operationally simple and scalable, and can be used to access keto-saccharides rapidly and inexpensively.
Hydrogen-Bonded, Hierarchically Structured Single-Component Chiral Poly(ionic liquid) Porous Membranes: Facile Fabrication and Application in Enantioselective Separation

The development of strategies for producing welldefined chiral porous membranes for the rapid and efficient enantioseparation of racemic mixtures remains a great challenge. Herein, we introduce an innovative, simple, and easily scalable synthetic strategy to manufacture chiral porous polymer membranes (CPPMs) bearing chiral NH groups by crosslinking single-component chiral poly(ionic liquid)s (PILs) with water molecules via hydrogen (H)-bonding. The chiral evolution process from ionic liquid monomers to PILs to chiral porous membrane has been well-demonstrated by a suite of experimental results from single-crystal structural analysis, ~1H NMR spectra, circular dichroism spectrum, and in situ scanning confocal microscopy. We demonstrate that these CPPMs are capable of efficient enantioseparation of drug enantiomers via directional H-bonding interactions and create a novel chiral membrane separation system.