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Exact Inflationary Solution in String-Motivated Scalar Field Cosmology

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Chinese Physics Letters 2001年第1期18卷 151-153页

作者： WANG wen-fu Department of Industrial Automation Southwest Petroleum InstituteNanchong 637001

We present a new exact solution to Einstein's equations that describes the evolution of inflationary universe *** inflation is driven by the evolution of a scalar field with an approximate two-loop four-dimensional string *** this scenario,the inflation began immediately after the epoch governed by quantum gravity and therefore there is no initial *** successful inflation scenario is expected to appear only at two-loop *** a_(1)/|a_(2)|≥90,the spectral index n_(s) of the scalar density fluctuations lies well inside the limits set by the cosmic background explorer satellite and the gravitational wave spectral index is n_(g)≈1.

关键词： scalar governed exact

An Exact Solution with Exit in the New Inflationary Universe Model

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Chinese Physics Letters 2001年第7期18卷 997-999页

作者： WANG wen-fu Department of Industrial Automation Southwest Petroleum InstituteNanchong 637001

Taking the cosmological expansion rate directly as a function of the inflaton field jinstead of as a function of time,we present a new exact solution to Einstein's equations that describe the evolution of inflationary universe *** includes a solution which has nearly exponential inflation for,and then develops smoothly towards radiation-like evolution *** inflation is driven by the evolution of scalar field with inflation potential,V()=V0-m^(2)/^(2)+λ/*** spectral index of the scalar density,ns,is computed and ns lies well inside the limits set by the cosmic background explorer satellite.

关键词： scalar smoothly exponential

Improved de-interleaving algorithm of radar pulses based on dual fuzzy vigilance ART

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Journal of Systems Engineering and Electronics 2020年第2期31卷 303-311页

作者： JIANG wen fu Xiongjun CHANG Jiayun School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China

As a core part of the electronic warfare(EW) system,de-interleaving is used to separate interleaved radar signals. The de-interleaving algorithm based on the fuzzy adaptive resonance theory(fuzzy ART) is plagued by the problems of premature saturation and performance improving dilemma. This study proposes a dual fuzzy vigilance ART(DFV-ART) algorithm to address these problems and make the following improvements. Firstly, a correction method is introduced to prevent the network from prematurely saturating;then, the fuzzy vigilance models(FVM) are constructed to replace the conventional vigilance parameter, reducing the error probability in the overlapping region;finally, a dual vigilance mechanism is introduced to solve the performance improving dilemma. Simulation results show that the proposed algorithm could improve the clustering accuracy(quantization error dropped60%) and the de-interleaving performance(clustering quality increased by 10%) while suppressing the excessive proliferation of categories.

关键词： fuzzy adaptive resonance theory(fuzzy ART) deinterleaving dual vigilance mechanism

Applying a salinity response function and zoning saline land for three fi eld crops: a case study in the Hetao Irrigation District, Inner Mongolia, China

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Journal of Integrative Agriculture 2015年第1期14卷 178-189页

作者： TONG wen-jie CHEN Xiao-li wen Xin-ya CHEN fu ZHANG Hai-lin CHU Qing-quan Shadrack Batsile Dikgwatlhe College of Agriculture and Biotechnology China Agricultural University/Key Laboratory of Farming SystemMinistry of Agriculture Beijing Research Center of Intelligent Equipment for Agriculture Beijing Academy of Agriculture and Forestry Sciences

Salinity is one of the major abiotic factors affecting the growth and productivity of crops in Hetao Irrigation District, China. In this study, the salinity tolerances of three local crops, wheat （Triticum aestinum L.）, maize （Zea mays L.） and sunflower （Helianthus annuus L.）, growing in 76 farm fields are evaluated with modified discount function. Salinity ecological zones appropriate for these local crops are characterized and a case study is presented for crop salinity ecological zoning. The results show that the yield reductions of wheat, maize and sunflower when grown in saline soils are attributed primarily to a reduction in spikelet number, 1 000-grain weight and seed number per head, respectively. Sunflower is the most tolerant crop among the three which had a salinity tolerance index （ST-index） of 12.24, followed by spring maize and spring wheat with ST-Indices of 9.00 and 7.43, respectively. According to the crop salinity tolerance results, the arable land in the Heping Village of this district was subdivided into four salinity ecological zones： the most suitable, suitable, sub-suitable and unsuitable zones. The area proportion of the most suitable zone for wheat, maize and sunflower within the Heping Village was 27.5, 46.5 and 77.5%, respectively. Most of the most suitable zone occurred in the western part of the village. The results of this study provide the scientific basis for optimizing the local major crop distribution and improving cultural practices management in Hetao Irrigation District.

关键词： salinity tolerance modified discount function ecological zoning Hetao Irrigation District

Screening of morphology-related genes based on predatorinduced transcriptome sequencing and the functional analysis of Dagcut gene in Daphnia galeata

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Current Zoology 2024年第4期70卷 440-452页

作者： ya-Qin Cao ya-Jie Zhao Hui-Ying Qi Jin-Fei Huang fu-Cheng Zhu wen-Ping Wang Dao-Gui Deng School of Life Science Huaibei Normal UniversityHuaibei 235000AnhuiChina

High fish predation pressure can trigger"induced defense"in Daphnia species,resulting in phenotypic plasticity in morphology,behavior,or life-history *** molecular mechanisms of defense morphogenesis(e.g.,the tail spine and helmet)in Daphnia remain *** the pres-ent study,the tail spine,helmet,and body of Daphnia galeata under fish and non-fish kairomones conditions were collected for transcriptome analysis.A total of 24 candidate genes related to the morphological defense of *** were identified,including 2 trypsin,one cuticle protein,1 C1qDC protein,and 2 ferritin *** function of the Dagcut gene(*** cuticle protein gene)in relation to tail spine morphology was assessed using RNA interference(RNAi).Compared with the EGFP(Enhanced green fluorescent protein)treatment,after RNAi,the expression levels of the Dagcut gene(*** cuticle protein gene)showed a significant ***,the tail spines of the offspring pro-duced by *** after RNAi of the Dagcut gene appeared curved during the *** whole-mount in situ hybridization,a clear signal site was detected on the tail spine of *** before RNAi which disappeared after *** results suggest that the Dagcut gene may play an important role in tail spine formation of ***,and will provide a theoretical basis for studying the molecular mechanisms of the morpho-logical plasticityin cladocera inthefuture.

关键词： Dagcut Daphnia galeata fish kairomones RNAi tail spine transcriptome sequencing.

Human neural stem cell-derived extracellular vesicles protect against ischemic stroke by activating the PI3K/AKT/mTOR pathway

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Neural Regeneration Research 2025年第11期20卷 3245-3258页

作者： Jiayi Wang Mengke Zhao Dong fu Meina Wang Chao Han Zhongyue Lv Liang Wang Jing Liu Stem Cell Clinical Research Center The First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning ProvinceChina Dalian Innovation Institute of Stem Cell and Precision Medicine DalianLiaoning ProvinceChina Institute(College)of Integrative Medicine Dalian Medical UniversityDalianLiaoning ProvinceChina

Human neural stem cell-derived extracellular vesicles exhibit analogous functions to their parental cells,and can thus be used as substitutes for stem cells in stem cell therapy,thereby mitigating the risks of stem cell therapy and advancing the frontiers of stem cell-derived *** lays a foundation for the development of potentially potent new treatment modalities for ischemic ***,the precise mechanisms underlying the efficacy and safety of human neural stem cell-derived extracellular vesicles remain unclear,presenting challenges for clinical *** promote the translation of therapy based on human neural stem cell-derived extracellular vesicles from the bench to the bedside,we conducted a comprehensive preclinical study to evaluate the efficacy and safety of human neural stem cell-derived extracellular vesicles in the treatment of ischemic *** found that administration of human neural stem cell-derived extracellular vesicles to an ischemic stroke rat model reduced the volume of cerebral infarction and promoted functional recovery by alleviating neuronal *** human neural stem cell-derived extracellular vesicles reduced neuronal apoptosis by enhancing phosphorylation of phosphoinositide 3-kinase,mammalian target of rapamycin,and protein kinase B,and these effects were reversed by treatment with a phosphoinositide 3-kinase *** findings suggest that human neural stem cell-derived extracellular vesicles play a neuroprotective role in ischemic stroke through activation of phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin signaling ***,we showed that human neural stem cell-derived extracellular vesicles have a good in vivo safety ***,human neural stem cell-derived extracellular vesicles are a promising potential agent for the treatment of ischemic stroke.

关键词： behavior exosome extracellular vesicles ischemic stroke mammalian target of rapamycin(mTOR) middle cerebral artery occlusion neural stem cells neuronal apoptosis phosphoinositide 3-kinase(PI3K) protein kinase B(AKT)

Lattice QCD Calculation of ππ Scattering Length

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Communications in Theoretical Physics 2012年第1期57卷 78-84页

作者： fu Zi-wen Key Laboratory of Radiation Physics and Technology(Sichuan University) Ministry of EducationInstitute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China

We study s-wave pion-pion scattering length in lattice QCD for pion masses ranging from 330 MeV to 466 MeV. In the ＂Asqtad＂ improved staggered fermion formulation, we measure full ππ four-point correlators for isospin I = 0 and 2 channels, and use chiral perturbation theory at next-to-leading order to extrapolate our simulation results. Extrapolating to the physical pion mass yields scattering lengths as mna01=2 = -0.041 6（2） and mna01= 0.186（2） for isospin I = 2 and 0 channels, respectively. Our lattice simulation for ππ scattering length in I = 0 channel is an exploratory study, where we include the disconnected contribution, and our preliminary result is near to its experimental value. These simulations are carried out with MILC 2 ＋ 1 flavor gauge configurations at lattice spacing a ≈0.15 fm.

关键词： lattice QCD energy shift scattering length four point function

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体认即反思

河北学刊 2025年第1期45卷 11-19页

作者：沈顺福山东大学易学与中国古代哲学研究中心暨儒学高等研究院

体认是宋明理学的重要概念之一,主要是指由心灵自身所发动的、面对自身的活动。这种对自身的心灵活动便是现代哲学的反思。体认既是对天理的体合、实现心理合一,也是让本性澄明。理学家认为,自然的浊气遮蔽了天生的本性,而体认便是心灵... 详细信息

体认是宋明理学的重要概念之一,主要是指由心灵自身所发动的、面对自身的活动。这种对自身的心灵活动便是现代哲学的反思。体认既是对天理的体合、实现心理合一,也是让本性澄明。理学家认为,自然的浊气遮蔽了天生的本性,而体认便是心灵对气质浑浊的心灵的活动,通过纯洁气质,让性澄明。心理合一也是本性澄明——理即性;对本性的觉察也是对自身身份的觉悟,形成主体——性即体。对性的认可便是对理的接受与遵循;体认天理的活动便是合“理”的超越性活动。

关键词：体认反思理理学

Serum levels of mi RNA in patients with hepatitis B virus-associated acute-on-chronic liver failure

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Hepatobiliary & Pancreatic Diseases International 2018年第2期17卷 126-132页

作者： ya wen Shi-Fang Peng Lei fu Xiao-Yu fu Da-Xian Wu Bing-Jie Liu De-Ming Tan Yi Ouyang Key Laboratory of Hunan Viral Hepatitis Department of Infectious Disease Xiangya Hospital Central South University

Background: Hepatitis B virus(HBV)-associated acute-on-chronic liver failure(HBV-ACLF) is a lifethreatening condition and its exact pathophysiology and progression remain unclear. The present study aimed to assess the role of serum mi RNAs in the evaluation of HBV-ACLF and to develop a model to predict the outcomes for ***: Serum was collected from 41 chronic hepatitis B and 55 HBV-ACLF patients in addition to30 chronic asymptomatic HBV carriers as controls. The mi RNAs expressions were measured by real-time quantitative PCR(q-PCR). Statistical analyses were conducted to assess the ability of differentially expressed mi RNAs and other prognostic factors in identifying ACLF prognosis and to develop a new predictive ***: Real-time q-PCR indicated that serum miR-146 a-5 p, mi R-122-3 p and mi R-328-3 p levels were significantly upregulated in ACLF patients compared to chronic hepatitis B and chronic asymptomatic HBV carriers patients. In addition, multivariate regression analyses indicated that Na+, INR, gastrointestinal bleeding and mi R-122-3 p are all independent factors that are reliable and sensitive to the prognosis of HBV-ACLF. Therefore, we developed a new model for the prediction of HBV-ACLF disease state: Y = 0.402 × Na+-1.72 × INR-4.963 × gastrointestinal bleeding(Yes = 0; No = 1)-0.278 ×(mi R-122-3 p) + 50.449. The predictive accuracy of the model was 95.3% and the area under the receiver operating characteristic curve(AUROC) was ***: Expression levels of these mi RNAs(miR-146 a-5 p, mi R-122-3 p and mi R-328-3 p) positively correlate with the severity of liver inflammation in patients with ACLF and may be useful to predict HBV-ACLF severity.

关键词： MicroRNA Hepatitis B virus Acute-on-chronic liver failure Prognosis