mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Living and enantiomer-selective polymerization of allene initiated by Ni complex containing chiral phosphine

A new allylnickel(II) complex ([S(R)]-N-[(1S)-2-(diphenylphosphino)-1-phenylethyl]-2-methyl-2-pro- panesulfinamide)(2,2,2-trifluoroacetato-kO)(p-allyl)nickel (2) was designed and prepared by using chiral phosphine. 2 was revealed to efficiently initiate the polymerization of L- and D-N-(1- (dodecylamino)-1-oxopropan-2-yl)-4-(propa-1,2-dien-1-yloxy)-benzamide (L-1 and D-1) in a living/ controlled chain growth manner. Polymerization kinetics of L-1 and D-1 indicated that L-1 preferentially polymerized over the antipode D-1 by a factor of 1.9. In block copolymerization of rac-1 using the poly-L- 150 as the macroinitiator, the polymerization proceeded in enantiomer-selective manner. It was found that enantiomeric excess (ee) value of the recovered monomer increased with the monomer conversion and finally reached to the maximum of 34%. These results suggest this chiral phosphine complex exhibits enantiomer-selectivity for the polymerization of chiral allene derivative monomer.
胸部肿瘤切除联合3D打印碳纤维胸壁重建术患者的护理

目的总结胸部肿瘤切除联合3D打印碳纤维胸壁重建术患者的围术期护理经验。方法对12例行胸部肿瘤切除联合3D打印碳纤维胸壁重建术的患者,加强肺部感染预防与护理、伤口及皮瓣护理、排异反应预防等围术期护理。结果12例患者术后均未发生排异反应;术后早期并发肺部感染1例、心律失常1例、伤口愈合不良1例,经处理后均痊愈;其余患者术区伤口均Ⅰ期愈合;胸腔引流管留置时间为(6.00 ± 0.56) d,住院时间为(14.50 ± 4.89) d。结论3D打印医用复合碳纤维材料可用于胸部肿瘤切除术后的胸壁重建修复,系统的围术期护理能有效缩短平均住院时间,改善患者预后。
Global Monsoon Changes under the Paris Agreement Temperature Goals in CESM1(CAM5)

Based on experiments with the Community Earth System Model, version 1 (Community Atmosphere Model, version 5) [CESM1(CAM5)], and an observational dataset, we found that CESM1-CAM5 is able to reproduce global monsoon (GM) features, including the patterns of monsoon precipitation and monsoon domains, the magnitude of GM precipitation (GMP, the local summer precipitation), GM area (GMA), and GM percentage (the ratio of the local summer precipitation to annual precipitation). Under the Paris Agreement temperature goals, the GM in CESM1-CAM5 displays the following changes: (1) The GMA is ambiguous under the 1.5℃ temperature goal and increases under the 2.0℃ temperature goal. The increase mainly results from a change in the monsoon percentage. (2) The GM, land monsoon and ocean monsoon precipitation all significantly increase under both the 1.5℃ and 2.0℃ goals. The increases are mainly due to the enhancement of humidity and evaporation. (3) The percentages of GM, land monsoon and ocean monsoon feature little change under the temperature goals. (4) The lengths of the GM, land monsoon and ocean monsoon are significantly prolonged under the temperature goals. The increase in precipitation during the monsoon withdrawal month mainly accounts for the prolonged monsoons. Regarding the differences between the 1.5℃ and 2.0℃ temperature goals, it is certain that the GMP displays significant discrepancies. In addition, a large-scale enhancement of ascending motion occurs over the southeastern Tibetan Plateau and South China under a warming climate, whereas other monsoon areas experience an overall decline in ascending motion. This leads to an extraordinary wetting over Asian monsoon areas.
Impacts of the Autumn Arctic Sea Ice on the Intraseasonal Reversal of the Winter Siberian High

During 1979–2015, the intensity of the Siberian high (SH) in November and December–January (DJ) is frequently shown to have an out-of-phase relationship, which is accompanied by opposite surface air temperature and circulation anomalies. Further analyses indicate that the autumn Arctic sea ice is important for the phase reversal of the SH. There is a significantly positive (negative) correlation between the November (DJ) SH and the September sea ice area (SIA) anomalies. It is suggested that the reduction of autumn SIA induces anomalous upward surface turbulent heat flux (SHF), which can persist into November, especially over the Barents Sea. Consequently, the enhanced eddy energy and wave activity flux are transported to mid and high latitudes. This will then benefit the development of the storm track in northeastern Europe. Conversely, when downward SHF anomalies prevail in DJ, the decreased heat flux and suppressed eddy energy hinder the growth of the storm track during DJ over the Barents Sea and Europe. Through the eddy–mean flow interaction, the strengthened (weakened) storm track activities induce decreased (increased) Ural blockings and accelerated (decelerated) westerlies, which makes the cold air from the Arctic inhibited (transported) over the Siberian area. Therefore, a weaker (stronger) SH in November (DJ) occurs downstream. Moreover, anomalously large snowfall may intensify the SH in DJ rather than in November. The ensemble-mean results from the CMIP5 historical simulations further confirm these connections. The different responses to Arctic sea ice anomalies in early and middle winter set this study apart from earlier ones.
Role of the Nocturnal Low-level Jet in the Formation of the Morning Precipitation Peak over the Dabie Mountains

The diurnal variation of precipitation over the Dabie Mountains (DBM) in eastern China during the 2013 mei-yu season is investigated with forecasts of a regional convection-permitting model. Simulated precipitation is verified against surface rain-gauge observations. The observed morning precipitation peak on the windward (relative to the prevailing synoptic-scale wind) side of the DBM is reproduced with good spatial and temporal accuracy. The interaction between the DBM and a nocturnal boundary layer low-level jet (BLJ) due to the inertial oscillation mechanism is shown to be responsible for this precipitation peak. The BLJ is aligned with the lower-level southwesterly synoptic-scale flow that carries abundant moisture. The BLJ core is established at around 0200 LST upwind of the mountains. It moves towards the DBM and reaches maximum intensity at about 70 km ahead of the mountains. When the BLJ impinges upon the windward side of the DBM in the early morning, mechanical lifting of moist air leads to condensation and subsequent precipitation.
Pre-course student performance prediction with multi-instance multi-label learning

Dear editor,Studying courses is one of the most basic and important tasks for college students.For each new course,the initial period of learning is crucial for students,and seriously influences subsequent learning activities.However,given a large number of classes in universities,it has become impossible for teachers to keep track of the individual performance of each student.In these circumstances,it is desirable to predict each student’s performance on a certain course prior to its commencement.
Hybrid event-and time-triggered control for double-integrator heterogeneous networks

This paper investigates the state consensus for double-integrator networks under heterogeneous interaction topologies.For double-integrator networks,the setting of heterogeneous topologies means that position and velocity information flows are modeled by two different graphs.The corresponding protocol proposed in this paper is based on edge-event-triggered control.The events based on position information are irrelevant to velocity information and independent of the events based on velocity information.And for different edges,the corresponding events are activated independently of each other.Once an event occurs,the agents connected by the associated edge will sample their corresponding relative state information and update their corresponding controllers.Furthermore,under the presented event-triggering rules,the state consensus of double-integrator networks can be achieved by designing appropriate parameters.In addition,the proposed protocol with the event-triggering rules can effectively improve the system performance and avoid the occurrence of Zeno behaviors.Finally,a simulation example is worked out to verify the theoretical analysis.
Ultra-stable pressure is realized for Chinese single pressure refractive index gas thermometry in the range 30-90 kPa

The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of Units.The international temperature scale of 1990 (ITS-90) is a practical temperature scale used worldwide to approximate thermodynamic temperature T by ITS-90 temperature T_(90).The primary thermometry calibration facilities based on thermodynamic temperature standards are the foundation of ITS 90 and temperature measurement in a country.China has developed primary thermometry in the temperature region down to the neon triple point 24.5561 K estimated by ITS-90,but it has not yet set up any primary thermometry at lower temperatures.
Open science as a better gatekeeper for science and society: a perspective from neurolaw

In 2011, a court near Milan, Italy, reduced the sentence of a convicted murderer from life to 20 years in jail, after considering results from neuroimaging and genetic tests. These tests had been used to convince the judge that the trial's female defendant, Stefania Albertani, was suffering from partial mental illness (http:// blogs.nature.com/news/2011/09/italian_court_reduces_murder_s. html). The structural MRI images showed that Albertani's grey matter volume was different from the average volume of a randomly- selected group – 10 healthy women with no history of mental or neurological disorders – in brain areas including the anterior cingulate gyrus (ACC) and insula. The expert testimony concluded that ‘‘these alterations (of brain structures) have to be considered in causal relation to the psychiatric symptomatology of the murderer.”
Optimal photonic indistinguishability tests in multimode networks

Particle indistinguishability is at the heart of quantum statistics that regulates fundamental phenomena such as the electronic band structure of solids, Bose-Einstein condensation and superconductivity. Moreover, it is necessary in practical applications such as linear optical quantum computation and simulation, in particular for Boson Sampling devices. It is thus crucial to develop tools to certify genuine multiphoton interference between multiple sources. Our approach employs the total variation distance to find those transformations that minimize the error probability in discriminating the behaviors of distinguishable and indistinguishable photons. In particular, we show that so-called Sylvester interferometers are near-optimal for this task. By using Bayesian tests and inference, we numerically show that Sylvester transformations largely outperform most Haar-random unitaries in terms of sample size required. Furthermore, we experimentally demonstrate the efficacy of the transformation using an efficient 3D integrated circuits in the single- and multiple-source cases. We then discuss the extension of this approach to a larger number of photons and modes. These results open the way to the application of Sylvester interferometers for optimal assessment of multiphoton interference experiments.
Is the East Asian flora ancient or not?

The East Asian flora (EAF) is a key biodiversity hotspot for understanding the origin and evolution of Northern Hemisphere floras, but there is an ongoing debate on whether it is a museum or a cradle for seed plants. Within the EAF, two main floras, the Sino-Himalayan Flora (mainly the Rhododendron Flora) and the Sino-Japanese Flora (mainly the Metasequoia Flora), have been recognized. Previous studies suggested that the EAF is ancient and the Metasequoia Flora is older than the Rhododendron Flora. To test this hypothesis, we synthesized molecular as well as fossil data on seed plants, focusing on the biogeographical origins and historical evolution of the EAF. We compared the ages of its two constituent floras, and examined the impact of the Asian monsoon and other environmental changes on the development of EAF through meta-analysis. Our results suggest that the EAF might be relatively young, with most of its clades originating since the Miocene. The Rhododendron Flora and the Metasequoia Flora are probably of a similar age. The formation and development of the Asian monsoon might have been the main factors that have driven the evolution of EAF. In the Rhododendron Flora, the north-south mountain chains increased the concentration of species and reduced extinction, and the barriers between the east and west have resulted in species differentiation, which triggered it to become a diversity center. The EAF appears to have multiple biogeographical origins, having closely affiliated not only with other floras in the Northern Hemisphere, but also with Gondwanan floras.
The design and fault ride through control of un-interrupted DC-DC Autotransformer

This paper proposed a novel type of DC-DC converter, termed as un-interrupted DC Autotransformer (un-interrupted DC AUTO), which has the capability to ride through DC fault on either side of the converter without blocking any devices. Besides that, the adequately designed converter retains the advantages of DC AUTO technology, namely reduced investment cost and transmission loss. To begin with, the topology and basic attributes of the un-interrupted DC AUTO are illustrated. Then the design goals and the corresponding design procedures are analyzed. Furthermore, an effective control system is proposed to enable the converter steady operation during both normal and faulted conditions. Finally, a 1000 MW ±320 kV/±640 kV test system is built on PSCAD/EMTDC platform to verify the technical feasibility of the proposed converter and the effectiveness of the control strategy.
Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank

A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure P_(inj) at the ambient temperature T_(od)=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum COP_h (coefficient of performance) existed in the SCRCVI cycle. However, the maximum COP_h of the SCRCVI system decreased as the increase of the frequency, and the maximum COP_h was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and COP_h by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (P_(inj)–P_s) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1.
Numerical simulation of the influence of aerosol radiation effect on urban boundary layer

With the intensification of pollution and urbanization,the aerosol radiation effect continues to play an important role in the urban boundary layer.In this paper,a winter pollution process in Beijing has been taken as an example,and a new aerosol vertical profile in the radiative parameterization scheme within the Weather Forecast Research and Forecasting (WRF) model has been updated to study the effect of aerosols on radiation and the boundary layer.Furthermore,the interactions among aerosols,urbanization,and planetary boundary layer (PBL) meteorology were discussed through a series of numerical experiments.The results show the following:(1) The optimization improves the performance of the model in simulating the distribution features of air temperature,humidity,and wind in Beijing.(2) The aerosols reduce the surface temperature by reducing solar radiation and increasing the temperature in the upper layer by absorbing or backscattering solar radiation.The changes in the PBL temperature lead to more stable atmospheric stratification,reducing the energy transfer from the surface and the height of the boundary layer.(3) With the increase in the aerosol optical depth,the atmospheric stratification most likely becomes stable over rural areas,most likely becomes stable over suburb areas,and has great difficultly becoming stable over urban areas.Aerosol radiative forcing,underlying urban surfaces,and the interaction between them are the main factors that affect the changes in the meteorological elements in the PBL.
Conversion relationships between environmental quality criteria of water/air and soil

The conversion study on the environmental quality criteria between water/air and soil is the need to carry out research on soil-environmental quality standards in an all-round way,and also the demand for solving emerging problems in this field using the system dynamic and the overall view.Carrying out this study is of practical significance and theoretical values in the face of formulation and revision of soil-environmental quality standards in China.Firstly,the theoretical basis and relative models of soil-water and soil-air systems were expounded,respectively.And on this basis,a preliminary conceptual model about the conversion was constructed.After that,the current worldwide environmental quality criteria/standards for soil,water and air media were introduced based on their types,concerned pollutants and hierarchical classification,and their variation were also analyzed briefly.Particularlly,the key points for the conversion of environmental quality criteria between soil and water and/or between soil and air were discussed,respectively,while combined with the relative researching results.Finally,this conversion study was commented and prospected.
Identification of Ca~(2+) signaling components in neural stem/ progenitor cells during differentiation into neurons and glia in intact and dissociated zebrafish neurospheres

The development of the CNS in vertebrate embryos involves the generation of different sub-types of neurons and glia in a complex but highly-ordered spatio-temporal manner. Zebrafish are commonly used for exploring the development, plasticity and regeneration of the CNS, and the recent development of reliable protocols for isolating and culturing neural stem/progenitor cells (NSCs/NPCs) from the brain of adult fish now enables the exploration of mechanisms underlying the induction/specification/ differentiation of these cells. Here, we refined a protocol to generate proliferating and differentiating neurospheres from the entire brain of adult zebrafish. We demonstrated via RT-qPCR that some isoforms of ip_3r, ryr and stim are upregulated/ downregulated significantly in differentiating neurospheres, and via immunolabelling that 1,4,5-inositol trisphosphate receptor (IP3R) type-1 and ryanodine receptor (RyR) type-2 are differentially expressed in cells with neuron-or radial glial-like properties. Furthermore, ATP but not caffeine (IP3R and RyR agonists, respectively), induced the generation of Ca~(2+) transients in cells exhibiting neuron-or glial-like morphology. These results indicate the differential expression of components of the Ca~(2+)-signaling toolkit in proliferating and differentiating cells. Thus, given the complexity of the intact vertebrate brain, neurospheres might be a useful system for exploring neurodegenerative disease diagnosis protocols and drug development using Ca~(2+) signaling as a read-out.
Achieving accuracy and efficiency at the same time: a new kinetic Monte Carlo approach for complicated catalytic systems

Rational design/screening of more active, more selective, and less expensive catalysts has long been an important target in heterogeneous catalysis [1]. In recent decades, the advances of density functional theory (DFT) calculations allow us to theoretically evaluate the activity of catalysts. As shown in Figure 1(a), kinetics serves as the link between the atomic-scale properties obtained by DFT and turnover frequency (TOF) of catalysts. Among that, phenomenological kinetics (PK), which usually assumes no correlation between surface adsorbates and considers the reacting mixture as an ideal solution, are most widely used. However, the adsorbate-adsorbate interactions [2,3] were recently found of great importance and markedly influence micro-kinetic results. Hence, the explicit lattice kinetic Monte Carlo (KMC) simulation (see Ref. [4] for a recent review), which explicitly accounts for spatial correlations and the neighboring effects among adsorbates to calculate rate coefficients, was employed to obtain more realistic results.
Nanopore sensing system for high-throughput single molecular analysis

Nanopore technique enables a sensitive, label free, low cost and high throughput method for single-molecule analysis [1–4]. Usually, the nanopore is fabricated on an insulating membrane with electrolyte solution in two sides, which can act as the only pathway for the ionic flow. When a single molecule enters the pore under the applied biased potential, it will temporarily block the ionic current flow through the nanopore. By analyzing the amplitude, duration, shape and frequency spectra of ionic current modulations, nanopore detection could provide the characteristics of the analytes including their size, charge, shape and conformation [5]. In this way, the ionic current directly converts the single molecule behaviors into the electric signals without the additional components like optical lens, light source and ion source.
红色中缢虫赤潮衰亡过程中营养盐的循环和利用及对浮游植物种群组成的影响

高生物量赤潮频繁地发生在香港的半封闭海湾,但这些海湾水体中的营养盐不足以支持如此高生物量的浮游植物生长.这些高生物量赤潮在衰亡期会释放大量无机营养盐到环境水体.我们假设这些来自赤潮衰亡释放的大量无机营养盐将加速其他种类浮游植物的生长,进而影响浮游植物种群组成.我们在香港的一个半封闭的海湾--牛尾海,利用由红色中缢虫(Mesodinium rubrum)引发的一次赤潮事件来检验这一假设.在赤潮发生水域,水体中细胞密度的达到5.0×10~5cells L~(-1),叶绿素a高达63.71μg L~(-1).在赤潮和非赤潮水域,水体中无机营养盐(硝酸盐: NO_3~-,铵盐: NH_4~+,磷酸盐: PO_4~(3-),硅酸盐: SiO_4~(3-))的浓度均较低.将营养盐添加到赤潮和非赤潮水体中,进行为期9天的营养盐加富培养实验.实验发现:赤潮水体中,无机营养盐的添加不能维持高细胞密度的红色中缢虫生长,第1天后红色中缢虫细胞密度迅速下降;非赤潮水体中,无机营养盐的添加并不能促使红色中缢虫细胞密度达到赤潮水体中的密度.这证实了营养盐并不是此次赤潮事件的形成或衰亡的主要驱动因素.红色中缢虫赤潮在第1天衰亡后,释放出了高浓度的NO_3~-、PO_4~(3-)、SiO_4~(3-)、NH_4~+和尿素.细菌丰度和异养活性明显增加,在第3天或第4天达到最高,并随红色中缢虫细胞密度的下降而降低.赤潮衰亡释放出来的营养盐刺激了诸如:角毛藻变种(Chaetoceros affinis var.)、卷曲鱼腥藻(circinalis)、伏氏海毛藻(Thalassiothrix frauenfeldii)和菱形藻属(Nitzschia sp.)等硅藻生长,这种刺激作用在添加SiO_4~(3-)的处理组中更明显;同时也刺激其他藻种的生长.这些结果表明,海湾中的红色中缢虫赤潮不是直接由营养盐驱动引发的.然而,赤潮衰亡时释放的大量无机营养盐会引起寡营养环境水体中藻华的二次爆发,进而影响浮游植物种群的组成.
体外膜肺氧合辅助下无保护左主干急性闭塞合并心源性休克急诊介入治疗一例

无保护左主干(unprotected left main coronary artery,ULMCA)急性闭塞导致的急性ST段抬高型心肌梗死约占急诊经皮冠状动脉介入治疗(percutaneous coronary intervention,PCI)的0.8%,患者往往会出现严重的血流动力学异常、心源性休克、恶性心律失常,甚至猝死.体外膜肺氧合(extracorporeal membrane oxygenation,ECMO)是一种抢救危重症患者的新技术,对呼吸和(或)循环功能不全的患者进行有效的呼吸循环支持,目前已广泛应用于急性心肌梗死患者的抢救中[2].
脑科重症监护患者人工气道意外拔管风险的护理对策

脑科重症监护患者若处于昏迷状态,需要对其进行人工气道,即将导管放入患者的气管或者上呼吸道中,帮助患者呼吸.人工气道意外拔(脱)管是指患者未经医护人员同意及未符合拔管指征自行拔除气管插管(气管套管)或气管插管(气管套管)不慎脱落,为重症监护病房的常见问题之一,其发生率为10.8%.此次研究对嘉兴学院附属第二医院2016年4月至2017年5月收治的80例脑科重症监护患者进行研究,分别从镇静药物、气囊管理、管理固定、舒适性体位等方面进行护理,旨在提高我院患者的生存率和生活质量,结果如下.
Conductive hearing loss in chronic inflammatory demyelinating polyneuropathy (CIDP): A case report

Chronic inflammatory demyelinating polyneuropathy (CIDP) is a progressive autoimmune disorder that targets peripheral nerves. It commonly presents with motor-predominant dysfunction and enlargement of cranial nerves. With regards to hearing loss, a few cases of sensorineural loss have been described. We present a novel case of conductive hearing loss caused by a mass on the tympanic segment of the facial nerve in the setting of CIDP.