mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
CHD3 chromatin-remodeling factor PICKLE regulates floral transition partially via modulating LEAFY expression at the chromatin level in Arabidopsis

PICKLE (PKL), a putative CHD3 chromatin remodeling factor, has been suggested to be involved in multiple processes in Arabidopsis. Here, we confirmed the late-flowering phenotype caused by pkl mutation with pkl mutants in two different ecotypes, and investigated the possible mechanisms that account for PKL regulation of flowering time. Quantitative RT-PCR and RNA-seq assays showed that expression of the LEAFY gene (LFY) and a number of LFY-regulated floral homeotic genes were down-regulated in seedlings of the pkl mutants. As predicted, overexpression of LFY restored normal flowering time of pkl mutants. Our results suggest that PKL may be involved in regulating flowering time via LFY expression. To uncover the underlying mechanism, ChIP-PCR using anti-PKL was performed on materials from three developmental stages of seedlings. Our results showed that PKL associated with the genomic sequences of LFY, particularly at 10-day and 25-day after germination. We also showed that loss of PKL affected H3K27me3 level at the promoter of LFY. Taken together, our data suggest that transcriptional regulation of LFY at the chromatin level by PKL may at least partially account for the late-flowering phenotype of pkl mutants.
Symbolic dynamics of Belykh-type maps

The symbolic dynamics of a Belykh-type map (a two-dimensional discontinuous piecewise linear map) is investigated. The admissibility condition for symbol sequences named the pruning front conjecture is proved under a hyperbolicity condition. Using this result, a symbolic dynamics model of the map is constructed according to its pruning front and primary pruned region. Moreover, the boundary of the parameter region in which the map is chaotic of a horseshoe type is given.
One-to-many authentication for access control in mobile pay-TV systems

In traditional authentication schemes for access control in mobile pay-TV systems, one-to-one delivery is used, i.e., one authentication message per request is delivered from a head-end system (HES) to a subscriber. The performance of one-to-one delivery for authentication is not satisfactory as it requires frequent operations which results in high bandwidth consumption. To address this issue, one-to-many authentication for access control in mobile pay-TV systems was developed. It requires only one broadcasted authentication message from a HES to subscribers if there are many requests for the same service in a short period of time. However, later it was revealed that the one-to-many authentication scheme was vulnerable to an impersonation attack, i.e., an attacker without any secret key could not only impersonate the mobile set (MS) to the HES but also impersonate the HES to the MS. Then, a new scheme has been recently introduced for secure operations of one-to-many authentication. However, as shown in this paper, the recent work for one-to-many authentication is still vulnerable to the impersonation attack. To mitigate this attack, in this paper, a new scheme for one-to-many authentication using bilinear pairing is proposed that eliminates security weaknesses in the previous work. Results obtained depict that the new improved scheme; in this paper provides better performance in terms of computation and communication overheads.
Traffic Flow Data Forecasting Based on Interval Type-2 Fuzzy Sets Theory

This paper proposes a long-term forecasting scheme and implementation method based on the interval type-2 fuzzy sets theory for traffic flow data. The type-2 fuzzy sets have advantages in modeling uncertainties because their membership functions are fuzzy. The scheme includes traffic flow data preprocessing module, type-2 fuzzification operation module and long-term traffic flow data forecasting output module, in which the Interval Approach acts as the core algorithm. The central limit theorem is adopted to convert point data of mass traffic flow in some time range into interval data of the same time range (also called confidence interval data) which is being used as the input of interval approach. The confidence interval data retain the uncertainty and randomness of traffic flow, meanwhile reduce the influence of noise from the detection data. The proposed scheme gets not only the traffic flow forecasting result but also can show the possible range of traffic flow variation with high precision using upper and lower limit forecasting result. The effectiveness of the proposed scheme is verified using the actual sample application.
Associated production of Higgs boson and tt at LHC

One of the future goals of the LHC is to precisely measure the properties of the Higgs boson. The associated production of a Higgs boson and top quark pair is a promising process to investigate the related Yukawa interaction and the properties of the Higgs. Compared with the pure scalar sector in the Standard Model, the Higgs sector contains both scalars and pseudoscalars in many new physics models, which makes the ttH interaction more complex and provides a variety of phenomena. To investigate the ttH interaction and the properties of the Higgs, we study the top quark spin correlation observables at the LHC.
Thermodynamic and transport properties of spiro-(1,1’)-bipyrrolidinium tetrafluoroborate and acetonitrile mixtures: A molecular dynamics study

Organic salts such as spiro-(1,1')-bipyrrolidinium tetrafluoroborate ([SBP][BF_4]) dissolved in liquid acetonitrile (ACN) are a new kind of organic salt solution, which is expected to be used as an electrolyte in electrical double layer capacitors (EDLCs). To explore the physicochemical properties of the solution, an all-atom force field is established on the basis of AMBER parameter values and quantum mechanical calculations. Molecular dynamics (MD) simulations are carried out to explore the liquid structure and physicochemical properties of [SBP][BF_4] electrolyte at room temperature. The computed thermodynamic and transport properties match the available experimental results very well. The microscopic structures of [SBP][BF_4] salt solution are also discussed in detail. The method used in this work provides an efficient way of predicting the properties of organic salt solvent as an electrolyte in EDLCs.
Single-photon scattering by two separated atoms in a supercavity

We study the single-photon scattering along a one-dimensional cavity array with two distant two-level atoms in a supercavity, which aims to simulate a recent x-ray experiment [Nature 482, 199 (2012)]. Without introducing dissipation, we find that when one atom is exactly located at a node of a mode of the supercavity and the other is at the antinode of that mode, no splitting of the reflectivity peak can appear. Nevertheless, the atom at the node significantly changes the positions of the reflectivity valleys. On the other hand, when the atom is shifted a little from the exact node, then the splitting can appear. We also explain these results with an analysis based on the general formal scattering theory. Our result implies the importance of non-resonant modes of the supercavity in our problem.
Numerical modeling of condensate droplet on superhydrophobic nanoarrays using the lattice Boltzmann method

In the present study, the process of droplet condensation on superhydrophobic nanoarrays is simulated using a multicomponent multi-phase lattice Boltzmann model. The results indicate that three typical nucleation modes of condensate droplets are produced by changing the geometrical parameters of nanoarrays. Droplets nucleated at the top (top-nucleation mode), or in the upside interpillar space of nanoarrays (side-nucleation mode), generate the non-wetting Cassie state, whereas the ones nucleated at the bottom corners between the nanoarrays (bottom-nucleation mode) present the wetting Wenzel state. Time evolutions of droplet pressures at the upside and downside of the liquid phase are analyzed to understand the wetting behaviors of the droplets condensed from different nucleation modes. The phenomena of droplet condensation on nanoarrays patterned with different hydrophilic and hydrophobic regions are simulated, indicating that the nucleation mode of condensate droplets can also be manipulated by modifying the local intrinsic wettability of nanoarray surface. The simulation results are compared well with the experimental observations reported in the literature.
Control of dispersion in fiber coupled resonator-induced transparency structure

Induced transparency phenomena and strong dispersion can be produced in a coupled resonator induced transparency (CRIT) structure. In this paper, we investigate the influences of structure parameters, such as amplitude reflection coefficient and loss, on transmission spectrum and dispersion of CRIT structure, and further study the control of dispersion in the structure. The results show that in the CRIT structure, adjusting the loss of resonators is an effective method of controlling dispersion and producing simultaneous normal and abnormal dispersion. When we choose approximate amplitude reflection coefficients of the two couplers, the decrease of transmittance due to loss could be effectively made up. In the experiment, we achieve the control of dispersion and simultaneous strong normal and abnormal dispersion in the CRIT structure comprised of fiber. The results indicate the CRIT structure has potential applications in optical signal processing and optical communication.
Microwave interrogation cavity for the rubidium space cold atom clock

The performance of space cold atom clocks (SCACs) should be improved thanks to the microgravity environment in space. The microwave interrogation cavity is a key element in a SCAC. In this paper, we develop a microwave interrogation cavity especially for the rubidium SCAC. The interrogation cavity has two microwave interaction zones with a single feedin source, which is located at the center of the cavity for symmetric coupling excitation and to ensure that the two interaction zones are in phase. The interrogation cavity has a measured resonance frequency of 6.835056471 GHz with a loaded quality factor of nearly 4200, which shows good agreement with simulation results. We measure the Rabi frequency of the clock transition of the rubidium atom in each microwave interaction zone, and subsequently demonstrate that the distributions of the magnetic field in the two interaction zones are the same and meet all requirements of the rubidium SCAC.
An exclusion process with dynamic roadblocks

We study an exclusion process with multiple dynamic roadblocks. Each roadblock can move diffusively forward or backward with different rates, as well as unbind from/rebind to a free site. By Monte Carlo simulations, the two moving types are investigated in combination of roadblock number. The case of only diffusive roadblocks shows an asymmetric current-density relation. The case of only long-range jumping roadblocks presents that flux decreases with increasing roadblock number.
Supply-based optimal scheduling of oil product pipelines

Oil product pipelines have features such as transporting multiple materials, ever-changing operating conditions, and synchronism between the oil input plan and the oil offloading plan. In this paper, an optimal model was established for a single-source multi-distribution oil product pipeline, and scheduling plans were made based on supply. In the model, time node constraints, oil offloading plan constraints, and migration of batch constraints were taken into consideration. The minimum deviation between the demanded oil volumes and the actual offloading volumes was chosen as the objective function, and a linear programming model was established on the basis of known time nodes' sequence. The ant colony optimization algorithm and simplex method were used to solve the model. The model was applied to a real pipeline and it performed well.
A scenario analysis of oil and gas consumption in China to 2030 considering the peak CO_2 emission constraint

China is now beginning its 13th five-year guideline. As the top CO_2 emitter, China has recently submitted the intended nationally determined contributions and made the commitment to start reducing its total carbon emissions in or before 2030. In this study, a bottom-up energy system model is built and applied to analyze the energy (mainly coal, oil, and gas) consumption and carbon emissions in China up to 2030. The results show that, the total energy consumption will reach a peak of 58.1 billion tonnes of standard coal and the CO_2 emissions will get to 105.8 billion tonnes. Moreover, in the mitigation scenario, proportion of natural gas consumption will increase by 7 % in 2020 and 10 % in 2030, respectively. In the transportation sector, gasoline and diesel consumption will gradually decrease, while the consumption of natural gas in 2030 will increase by 2.7 times compared to the reference scenario. Moreover, with the promotion of electric cars, the transport electricity consumption will increase 3.1 times in 2030 compared to the reference scenario. In order to fulfill the emission peaking target, efforts should be made from both the final demand sectors and oil and gas production industries, to help adjust the energy structure and ensure the oil and gas supply in future.
The coupling of dynamics and permeability in the hydrocarbon accumulation period controls the oil-bearing potential of low permeability reservoirs: a case study of the low permeability turbidite reservoirs in the middle part of the third member of Shaheji

The relationships between permeability and dynamics in hydrocarbon accumulation determine oilbearing potential (the potential oil charge) of low permeability reservoirs. The evolution of porosity and permeability of low permeability turbidite reservoirs of the middle part of the third member of the Shahejie Formation in the Dongying Sag has been investigated by detailed core descriptions, thin section analyses, fluid inclusion analyses, carbon and oxygen isotope analyses, mercury injection, porosity and permeability testing, and basin modeling. The cutoff values for the permeability of the reservoirs in the accumulation period were calculated after detailing the accumulation dynamics and reservoir pore structures, then the distribution pattern of the oil-bearing potential of reservoirs controlled by the matching relationship between dynamics and permeability during the accumulation period were summarized. On the basis of the observed diagenetic features and with regard to the paragenetic sequences, the reservoirs can be subdivided into four types of diagenetic facies. The reservoirs experienced two periods of hydrocarbon accumulation. In the early accumulation period, the reservoirs except for diagenetic facies A had middle to high permeability ranging from 10 × 10~(-3) μm~2 to 4207 × 10~(-3) μm~2. In the later accumulation period, the reservoirs except for diagenetic facies C had low permeability ranging from 0.015 × 10~(-3) μm~2 to 62 × 10~(-3) μm~2. In the early accumulation period, the fluid pressure increased by the hydrocarbon generation was 1.4–11.3 MPa with an average value of 5.1 MPa, and a surplus pressure of 1.8–12.6 MPa with an average value of 6.3 MPa. In the later accumulation period, the fluid pressure increased by the hydrocarbon generation process was 0.7–12.7 MPa with an average value of 5.36 MPa and a surplus pressure of 1.3–16.2 MPa with an average value of 6.5 MPa. Even though different types of reservoirs exist, all can form hydrocarbon accumulations in the early accumulation period. Such types of reservoirs can form hydrocarbon accumulation with high accumulation dynamics; however, reservoirs with diagenetic facies A and diagenetic facies B do not develop accumulation conditions with low accumulation dynamics in the late accumulation period for very low permeability. At more than 3000 m burial depth, a larger proportion of turbidite reservoirs are oil charged due to the proximity to the source rock. Also at these depths, lenticular sand bodies can accumulate hydrocarbons. At shallower depths, only the reservoirs with oil-source fault development can accumulate hydrocarbons. For flat surfaces, hydrocarbons have always been accumulated in the reservoirs around the oil-source faults and areas near the center of subsags with high accumulation dynamics.
Electricity Production in Microbial Fuel Cell Subjected to Different Operational Modes

The effects of inoculum species, substrate concentration, temperature, and cathodic electron acceptors on electricity production of microbial fuel cells (MFCs) were investigated in terms of start-up time and power output. When inoculated with aeration tank sludge, this MFC outperformed the cell that was inoculated with anaerobic sludge in terms of start-up time and power output. After running for a certain time period, the dominant populations of the two MFCs varied significantly. Within the tested range of substrate concentration (200–1800 mg L~(-1)), the voltage output increased and the time span of the electricity generation lengthened with increasing substrate concentration. As the temperature declined from 35 to 10 °C, the maximum power density reduced from 2.229 to 1.620 W m~(-3), and anodic polarization resistance correspondingly dropped from 118 to 98 X. The voltage output of MFC–Cu~(2+) was 0.447 V, which is slightly lower than that achieved with MFC–[Fe(CN)_6]~(3-) (0.492 V), thereby indicating that MFCs could be used to treat wastewater containing Cu~(2+) pollutant in the cathode chamber with removal of organics in anode chamber and simultaneous electricity generation.
影响低温棉籽蛋白KOH蛋白质溶解度因素的研究

使用有机溶剂将棉仁中的棉籽油和棉酚萃取后,余下的棉籽蛋白是一种优良的动物饲料原料。棉籽蛋白KOH蛋白质溶解度的高低直接影响动物对饲料中蛋白质的吸收率。结合生产实际研究了醇、热等变性因素在加工过程中对低温棉籽蛋白KOH蛋白质溶解度的影响,确定了最佳工艺参数,优化了低温棉籽蛋白加工工艺。
葛根黄连有效组分配伍抗2型糖尿病机制初步研究

目的: 考察葛根总黄酮-黄连总生物碱3∶ 8配伍防治2型糖尿病的作用机制。方法:建立链脲佐菌素(STZ)复合高脂饲料致2型糖尿病大鼠模型,给药后检测血清还原型谷胱甘肽(GSH) 、超氧化物歧化酶(SOD) 、丙二醛(MDA) 、一氧化氮合成酶(NOS) 、一氧化氮(NO)水平; 免疫组化检测大鼠胰腺组织BAX、BCL-2、Caspase-3蛋白表达。结果: 葛根黄连有效组分能显著提高2型糖尿病大鼠血清GSH、SOD活性,降低血清MDA、NOS、NO水平,并能显著提高胰腺组织BCL-2蛋白表达,降低胰腺组织BAX与Caspase-3蛋白表达。结论: “葛根总黄酮-黄连总生物碱”组分配伍对2型糖尿作用机制可能为减轻氧化应激损伤,抑制胰岛β细胞凋亡有关。
Impact toughness of a gradient hardened layer of Cr5Mo1V steel treated by laser shock peening

Laser shock peening (LSP) is a widely used surface treatment technique that can effectively improve the fatigue life and impact toughness of metal parts. Cr5Mo1V steel exhibits a gradient hardened layer after a LSP process. A new method is proposed to estimate the impact toughness that considers the changing mechanical properties in the gradient hardened layer. Assuming a linearly gradient distribution of impact toughness, the parameters controlling the impact toughness of the gradient hardened layer were given. The influences of laser power densities and the number of laser shots on the impact toughness were investigated. The impact toughness of the laser peened layer improves compared with an untreated specimen, and the impact toughness increases with the laser power densities and decreases with the number of laser shots. Through the fracture morphology analysis by a scanning electron microscope, we established that the Cr5Mo1V steel was fractured by the cleavage fracture mechanism combined with a few dimples. The increase in the impact toughness of the material after LSP is observed because of the decreased dimension and increased fraction of the cleavage fracture in the gradient hardened layer.
Dynamic simulation and safety evaluation of high-speed trains meeting in open air

Dynamic responses of a carriage under excitation with the German high-speed low-interference track spectrum together with the air pressure pulse generated as high-speed trains passing each other are investigated with a multi-body dynamics method. The variations of degrees of freedom (DOFs: horizontal movement, roll angle, and yaw angle), the lateral wheel-rail force, the derailment coefficient, and the rate of wheel load reduction with time when two carriages meet in open air are obtained and compared with the results of a single train travelling at specified speeds. Results show that the rate of wheel load reduction increases with the increase of train speed and meets some safety standard at a certain speed, but exceeding the value of the rate of wheel load reduction does not necessarily mean derailment. The evaluation standard of the rate of wheel load reduction is somewhat conservative and may be loosened. The pressure pulse has significant effects on the train DOFs, and the evaluations of these safety indexes are strongly suggested in practice. The pressure pulse has a limited effect on the derailment coefficient and the lateral wheel-rail force, and, thus, their further evaluations may be not necessary.
基于Allan方差的BDS随机误差分析

BDS观测数据噪声的辨识对提高BDS定位精度具有非常重要的意义,大量研究表明GPS非差随机模型并不服从高斯白噪声分布,北斗系统由于其星座和频率的多样性,噪声特征将明显不同于GPS。本文利用iGMAS大量高频实测数据,通过Allan方差分析,对比研究了BDS的噪声成分与其参数。试验结果表明,BDS非差噪声成分与GPS相同,主要为白噪声与一阶马尔科夫过程噪声,但是具体参数不同。BDS相位白噪声为2.50 mm,大于GPS的2.33 mm; GM过程噪声为2.38 mm·s~(-1/2),小于GPS的4.43 mm·s~(-1/2),相关时间为77.07 s,大于GPS的55.51 s。大量试验数据表明BDS的噪声参数聚集程度大于GPS,对环境的敏感程度低,噪声相关时间更长,过程噪声更小,这在北斗精密定位中还有待精化。
Repeated cupping manipulation temporary decreases natural killer lymphocyte frequency, activity and cytotoxicity

OBJECTIVE: Elevated natural killer lymphocyte cytotoxicity (NKc) has been linked with reproductive problems in women. Here we evaluate the potential benefit of cupping therapy (CT) in reproduction-related immune responses. METHODS: This was a pilot clinical study. Participants were healthy female volunteers (n = 23) with elevated NKc, and received repeated CT 3 times over 5 d (inner pressure 40–50 kPa, 40 min; 12–15 cups). Lymphocyte subsets, NKc and NK lymphocyte activity (NKa) were measured in blood on day 0 (initial levels, before the first treatment) and days 3, 10 and 17 after the last CT treatment, using the K562-stimulated CD69 expression assay. RESULTS: As a result of CT manipulations NKa was reduced on days 3 and 10, and NK percentage was reduced on day 10. NKc was most sensitive to CT treatment, resulting in their decreased counts at 3, 10 and 17 d post CT. CT treatment decreased NKc in the majority of individuals (87%), but the magnitude of the effect was variable. Out of 23 subjects 9 (39.1%) had a 2–3 fold decrease of NKc on days 3, 10 and 17; 11 (47.8%) started to show a decrease in NKc later, or more quickly returned to base levels; and only 3 (13%) subjects displayed no effect of CT on NKc. Expectedly, no changes in T-cell subsets (CD3CD4, CD3CD8, HLADR, CD158a) were observed after CT. CONCLUSION: CT decreased NK cell numbers, their activity and cytotoxicity. Low cost, safety, non-invasive nature and ease of administration make CT a promising approach for NKc down-regulation.
动态血压与缺血性脑白质病变关系的研究进展

随着人口老龄化和影像学技术的发展,不同病因脑白质病变的检出率越来越高。其中,缺血性脑白质病变(WML)是最常见的白质脑病类型之一。在60岁以上老年人,计算机断层扫描(CT)和磁共振成像(MRI)的WML检出率分别高达7% ~30%和8% ~ 100%。多项研究认为WML是认知功能下降及痴呆的早期信号之一,且白质疏松的严重程度与认知功能的下降呈正比,故及早发现WML,明确病因,分清WML的危险因素是研究优先解决的问题。WML是一个慢性病变过程,受多因素影响,目前公认的主要因素有高龄与高血压,其中高血压是脑白质病变的一个主要危险因素。本文就WML与高血压及血压动态变化和昼夜节律的关系进行综述。
居住方式与孤独感对老年人自评健康的交互作用及联合影响

目的了解居住方式与孤独感对老年人自评健康(SRH)的交互作用及联合影响。方法2013年开展的厦门市14名≥60岁的老年人横断面调查资料为基础,建立5个多水平Logistic回归模型,分析居住方式与孤独感对老年人SRH的影响,探讨二者是否存在交互作用,并进一步评价其联合影响。结果17.98%的老年人SRH为“较差”;独居者占11.07%;34.10%的老年人与配偶和子女居住,经常或有时感到孤独的老年人占38.22%;居住方式与孤独感的交互作用及联合影响均具有统计学意义;以独居且经常感到孤独的老年人为参照,与配偶和子女居住且从不/偶尔感到孤独的老年人SRH最好(OR = 2.51)。结论居住方式与孤独感对老年人SRH存在交互作用及联合影响;应鼓励老年人选择与配偶和子女共同居住,积极防控和降低老年人孤独感的发生。
高血糖高渗状态和糖尿病酮症酸中毒伴血钠增高时皮质醇的变化

目的探讨在高血糖高渗状态(HHS)和糖尿病酮症酸中毒(DKA)伴血钠增高时血浆皮质醇(F)、血钠、随机血糖、糖化血红蛋白(HbAlc)、血浆渗透压的变化。方法分别测定HHS和DKA伴血钠增高症组8时、16时、0时各时段血F、血钠、随机血糖、HbAlc、血浆渗透压的浓度变化以及通过治疗后各指标恢复情况。结果两组随机血糖、HbA1c、血钠、各时段F均明显高于正常,但F节律均正常,高血糖高渗组渗透压升高,DKA伴血钠增高组渗透压正常;治疗后各时段F、血钠均可恢复正常,随机血糖、HbAlc均较治疗前明显下降,高血糖高渗组渗透压恢复正常。结论高血糖高渗状态和DKA伴血钠增高时各时段F、血钠、随机血糖、HbAlc均明显升高,但F节律正常,通过治疗后各时段F水平、血钠均恢复正常,血糖较前明显下降,可与F增多症进行鉴别。
艾灸不同温度热刺激对小鼠神阙穴局部形态及肥大细胞的影响

目的探讨艾灸不同温度热刺激对小鼠神阙穴施灸局部效应的影响。方法观察艾灸不同温度(38?C、46?C)热刺激对小鼠神阙穴施灸局部皮肤形态结构的改变以及肥大细胞的变化。结果不同的温热刺激可以不同程度地影响神阙穴局部的结构和细胞。艾灸的热刺激对C57BL/6J野生型小鼠与TRPV1-/-小鼠皮肤组织形态结构的影响存在差异。辣椒碱化学刺激对小鼠皮肤组织形态结构的影响不明显。不同温度的艾灸热刺激对小鼠神阙穴施灸局部肥大细胞的影响存在差异。46?C的热刺激能够明显的使野生型小鼠局部皮肤肥大细胞数目增多,使肥大细胞脱颗粒。结论艾灸不同的温热刺激可以不同程度地影响神阙穴施灸局部组织的结构和细胞,艾灸的热刺激所致的皮肤神经源性炎症可能与激活TRPV1相关。