检索结果-南通市图书馆

Energy Balance-Based SWAT Model to Simulate the Mountain Snowmelt and Runoff——Taking the Application in Juntanghu Watershed(China) as an Example

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2015年第2期12卷 368-381页

作者： meng xian-yong YU Dan-Lin LIU Zhi-Hui School of Resources and Environment Science Xinjiang University Key Laboratory of Oasis Ecology Ministry of Education Xinjiang University Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Department of Earth & Environmental Studies Montclair State University Institute of Arid Ecology and Environment Xinjiang University

In order to predict long-term flooding under extreme weather conditions in central Asia, an energy balance-based distributed snowmelt runoff model was developed and coupled with the Soil and Water Assessment Tool(SWAT) model. The model was tested at the Juntanghu watershed on the northern slope of the Tian Shan Mountains, Xinjiang,China. We compared the performances of temperature-index method and energy balanced method in SWAT model by taking Juntanghu river basin as an application example(as the simulation experiment was conducted in Juntanghu River, we call the energy balanced method as SWAT-JTH). The results suggest that the SWAT snowmelt model had overall Nash-Sutcliffe efficiency(NSE) coefficients ranging from 0.61 to 0.85 while the physical based approach had NSE coefficients ranging from 0.58 to0.69. Overall, on monthly scale, the SWAT model provides better results than that from the SWAT-JTH model. However, results generated from both methods seem to be fairly close at a daily scale. Thestructure of the temperature-index method is simple and produces reasonable simulation results if the parameters are well within empirical ranges. Although the data requirement for the energy balance method in current observation is difficult to meet and the existence of uncertainty is associated with the experimental approaches of physical processes, the SWAT-JTH model still produced a reasonably high NSE. We conclude that using temperature-index methods to simulate the snowmelt process is sufficient, but the energy balance-based model is still a good choice to simulate extreme weather conditions especially when the required data input for the model is acquired.

关键词： SWAT Snowmelt model The physical process Energy balance Temperature-index Water balance

Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2014年第6期11卷 1543-1551页

作者： LIU yong-qiang Ali MAMTIMIN HUO Wen YANG Xing-hua LIU Xin-chun meng xian-yong HE Qing College of Resource & Environmental Sciences Xinjiang University Key Laboratory of Oasis Ecology (Ministry of Education) Key Laboratory of City Intellectualizing and Environment Modeling Xinjiang University Institute of Desert Meteorology China Meteorological Administration Desert Atmosphere & Environment Observation Experiment Station of Taklimakan

An accurate accounting of land surface emissivity(ε) is important both for the retrieval of surface temperatures and the calculation of the longwave surface energy *** ε is one of the important parameterizations in land surface models(LSMs),accurate accounting also improves the accuracy of surface temperatures and sensible heat fluxes simulated by *** order to obtain an accurate emissivity,this paper focuses on estimating ε from data collected in the hinterland of Taklimakan Desert by two different *** the first method,ε was derived from the surface broadband emissivity in the 8–14 μm thermal infrared atmospheric window,which was determined from spectral radiances observed by field measurements using a portable Fourier transform infrared spectrometer,the mean ε being *** second method compared the observed and calculated heat fluxes under nearneutral atmospheric stability and estimated ε indirectly by minimizing the root-mean-square difference between *** result of the second method found a mean value of 0.9042,which is consistent with the result by the first *** the two methods recover ε from different field experiments and data,the difference of meanvalues is *** first method is superior to the indirect method,and is also more convenient.

关键词： Taklimakan Desert Land surface emissivity Thermal infrared spectra Surface temperature Heat flux

在线全文

学校读者我要写书评

暂无评论

TRIM32与相关神经系统疾病的研究进展

神经药理学报 2024年第2期14卷 47-53页

作者：孙晓静孟宪勇余会娇董晓华河北北方学院药学院河北省神经药理学重点实验室张家口075000 河北北方学院附属第一医院张家口075000

三结构域蛋白家族(tripartite motif protein,TRIM)是一类被广泛涉及于生物学过程中的蛋白质,其功能包含细胞生长、分化、发育、凋亡、免疫应答和肿瘤发生等方面。其中,TRIM32是一种E3泛素连接酶,隶属于TRIM蛋白家族。虽然关于TRIM32的... 详细信息

三结构域蛋白家族(tripartite motif protein,TRIM)是一类被广泛涉及于生物学过程中的蛋白质,其功能包含细胞生长、分化、发育、凋亡、免疫应答和肿瘤发生等方面。其中,TRIM32是一种E3泛素连接酶,隶属于TRIM蛋白家族。虽然关于TRIM32的相关研究较少,但其在维持神经系统的生理功能方面作用极为重要。因此,该文旨在综述TRIM32在神经系统疾病中的作用。

关键词： TRIM32 泛素连接酶神经系统疾病

机器学习方法在植物基因组信息预测中的研究现状

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

生命科学 2024年第3期36卷 302-315页

作者：张兆旭管思彤林一鸣苏培森黄思罗孟宪勇柳平增颜君山东农业大学信息科学与工程学院农业农村部黄淮海智慧农业技术重点实验室泰安271018 聊城大学农学与农业工程学院聊城252000 华中科技大学生命科学与技术学院武汉430074

随着高通量测序技术的飞速发展,植物基因组学研究目前已经积累了海量多组学数据。因此如何开发和改进相关处理软件工具,从而有效利用这些海量数据发掘有用的生物学信息,成为当下亟需解决的重要科学问题。其中机器学习方法凭借其显著的... 详细信息

随着高通量测序技术的飞速发展,植物基因组学研究目前已经积累了海量多组学数据。因此如何开发和改进相关处理软件工具,从而有效利用这些海量数据发掘有用的生物学信息,成为当下亟需解决的重要科学问题。其中机器学习方法凭借其显著的预测、分类、数据挖掘和集成能力,在此领域受到广泛关注。本文系统综述了不同类型机器学习方法的基本原理和流程,以及这些方法在植物基因组功能预测中的研究进展,重点总结了机器学习模型在植物分子相互作用预测、重要功能位点预测、功能注释、作物育种等方面的应用成果,并展望了该领域未来的发展方向和应用前景。本文有助于植物研究者快速了解和应用机器学习方法,从而推进植物遗传相关机制的研究和作物性状改良。

关键词：机器学习植物基因组预测蛋白质相互作用分子位点预测功能注释作物育种

Influence of Mo on Dynamic Continuous Cooling Transformation of 1000 MPa Cold Rolled Dual Phase Steel

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2011年第S1期18卷 296-299页

作者： ZHAO xian-meng,KANG yong-lin,HAN Qi-hang (School of Material Science and Engineering.University of Science and Technology Beijing,Beijing 100083,China) Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China

The expanding curves of two kinds of 1000 MPa ultra-high strength cold rolled dual phase steels,which were C-Si-Mn-Cr and C-Si-Mn-Cr-Mo steel respectively,were detected on Gleeble-1500 thermal-mechanical simulator at different cooling *** with metallographic and hardness methods,the continuous cooling transformation curves (CCT) of the two steels were *** results showed that Mo could raise the A r3 temperature,and strongly restrain the pearlite and bainite *** reason for this was the interaction that the addition of Mo could increase the chemical driving force of ferrite transformation and the activation energy for the diffusion of carbon in austenite,which could decelerate the ferrite *** hardness of the two steels was similar in the cooling rates range of this experiment and got higher with the increase of the cooling *** the cooling rates were above 7 ℃/s,the hardness almost kept constant because the most part of the microstructure was martensite.

关键词： Mo dual phase steel cold rolled CCT ultra-high strength

Expression and alterations of different molecular form γ-glutamyl transferase and total RNA concentration during the carcinogenesis of rat hepatoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 1999年第4期5卷 84-86页

作者： TANG Qi Yun, YAO Deng Fu, LU Jian Xin, WU Xin Hua and meng xian yong

ＩＮＴＲＯＤＵＣＴＩＯＮＣａｒｃｉｎｏｇｅｎｅｓｉｓｉｓｃｌｏｓｅｌｙｒｅｌａｔｅｄｗｉｔｈＤＮＡｓｙｎｔｈｅｓｉｓａｎｄｈｙｐｅｒｍｅｔａｂｏｌｉｓｍｏｆｎｕｃｌｅｉｃａｃｉｄ．γｇｌｕｔａｍｙｌｔｒａｎｓｆｅｒ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＣａｒｃｉｎｏｇｅｎｅｓｉｓｉｓｃｌｏｓｅｌｙｒｅｌａｔｅｄｗｉｔｈＤＮＡｓｙｎｔｈｅｓｉｓａｎｄｈｙｐｅｒｍｅｔａｂｏｌｉｓｍｏｆｎｕｃｌｅｉｃａｃｉｄ．γｇｌｕｔａｍｙｌｔｒａｎｓｆｅｒａｓｅ（ＧＧＴ，ＥＣ２．３．２．２...

关键词： liver neoplasms/enzymology γ glutamyl transferase/analysis disease models, animal RNA 2 fluoenyacetamide/analysis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于双线性对的多银行电子现金方案

计算机工程 2010年第19期36卷 154-155,158页

作者：孟显勇吉林大学珠海学院物流与信息管理系广东珠海519000

提出一个基于双线性对的多银行电子现金方案,采用代理签密技术实现多银行的代理授权和电子现金的生成。理论分析结果证明,双线性对使方案具有更高的安全性,签密技术使方案更加简单和高效,计算量和通信成本也较低,因此该方案更适用于处... 详细信息

提出一个基于双线性对的多银行电子现金方案,采用代理签密技术实现多银行的代理授权和电子现金的生成。理论分析结果证明,双线性对使方案具有更高的安全性,签密技术使方案更加简单和高效,计算量和通信成本也较低,因此该方案更适用于处理能力和存储能力较低的移动安全终端设备和各种嵌入式设备。

关键词：代理签密双线性对签密电子现金多银行

Investigating the causal associations between five anthropometric indicators and nonalcoholic fatty liver disease:Mendelian randomization study

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第7期12卷 1215-1226页

作者： xian-Pei Xiao yong-Jun Dai Yu Zhang meng Yang Jian Xie Guo Chen Zheng-Jun Yang Department of Oncology Luojiang District People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Orthopaedics Luojiang District People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Infectious Diseases Hospital of Chengdu University of Traditional Chinese MedicalChengdu 610500Sichuan ProvinceChina

BACKGROUND Although the etiology of nonalcoholic fatty liver disease(NAFLD)has not been thoroughly understood,the emerging roles of anthropometric indicators in assessing and predicting the risk of NAFLD have been highlighted by accumulating *** To evaluate the causal relationships between five anthropometric indicators and NAFLD employing Mendelian randomization(MR)*** The Anthropometric Consortium provided genetic exposure data for five anthropometric indicators,including hip circumference(HC),waist circumference(WC),waist-to-hip ratio(WHR),body mass index(BMI),and body fat percentage(BF).Genetic outcome data for NAFLD were obtained from the United Kingdom Biobank and FinnGen ***-wide significant single nucleotide polymorphisms were chosen as instrumental *** MR(UVMR)and multivariable MR(MVMR)designs with analytical approaches,including inverse variance weighted(IVW),MR-Egger,weighted median(WM),and weighted mode methods,were used to assess the causal relationships between anthropometric indicators and *** Causal relationships were revealed by UVMR,indicating that a higher risk of NAFLD was associated with a perunit increase in WC[IVW:odds ratio(OR)=2.67,95%CI:1.42-5.02,P=2.25×10^(−3)],and BF was causally associated with an increased risk of NAFLD(WM:OR=2.23,95%CI:1.07-4.66,P=0.033).The presence of causal effects of WC on the decreased risk of NAFLD was supported by MVMR after adjusting for BMI and ***,no causal association between BF and NAFLD was *** addition,other causal relationships of HC,WHR(BMI adjusted),and BMI with the risk of NAFLD were not retained after FDR *** This study establishes a causal relationship,indicating that an increase in WC is associated with a higher risk of *** demonstrates that a suitable decrease in WC is advantageous for preventing NAFLD.

关键词： Anthropometric indicator Waist circumference Nonalcoholic fatty liver disease Mendelian randomization Genetic variant

Promotion and Mechanism of Acupotomy on Chondrocyte Autophagy in Knee Osteoarthritis Rabbits

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2024年第9期30卷 809-817页

作者： LU Man meng De-hong SHE Ze-yu WU xian XIA Shuai YANG Kai-ning LIU Cun-bin LI Tao YANG yong-hui The First Affiliated Hospital of Anhui University of Chinese Medicine Hefei230031China The Second Affiliated Hospital of Anhui University of Chinese Medicine Hefei230038China Department of Acupotomy Rehabilitation Anhui Provincial Hospital of Integrated Traditional Chinese and Western MedicineHefei230031China

Objective:To explore the effect of acupotomy intervention on autophagy of chondrocytes in rabbits with knee osteoarthritis(KOA),and to determine the possible mechanisms of acupotomy to alleviate cartilage ***:The modified Videman method was used to construct a KOA rabbit *** modeling,40 rabbits were randomly divided into 4 groups by a random number table:control;KOA(model);KOA+acupotomy(acupotomy),and KOA+sham acupotomy(sham),10 in each *** a 3-week treatment course,the knee joint activity was determined by the modified Lequesne MG ***-eosin staining staining was used to examine the morphological changes of *** of chondrocytes was observed by transmission electron *** surface morphology of cartilage tissue was observed by scanning electron *** mRNA and protein levels of AMP kinase/mammalian target of rapamycin/Unc-51(AMPK/mTOR/ULK1)signal pathway key proteins,autophagy-related factor Beclin-1 and microtubule-associated protein 1A/1B light chain 3(LC3)in rabbit knee cartilage were assessed by real-time fluorescence quantitative polymerase chain reaction and Western blot,***:The modified Lequesne MG score of acupotomy group was significantly lower than that of model group(P<0.05).Pathological results showed that chondrocyte autophagy decreased and cartilage surface was rough in the model group,which recovered after acupotomy *** mRNA expressions of AMPK,ULK1,Beclin-1 and the protein levels of p-AMPK,p-ULK1,Beclin-1,and LC3Ⅱ/LC3Ⅰwere decreased in the model group,while the mRNA and protein expressions of mTOR were increased(P<0.01).However,acupotomy treatment reversed these abnormal changes(P<0.05).Conclusions:Acupotomy could effectively up-regulate the expressions of AMPK,ULK1 and Beclin1,reduce the expression of mTOR,promote autophagy,and alleviate joint *** is a promising complementary and alternative therapy for KOA.

关键词： acupotomy knee asteoarthritis autophagy AMPK/mTOR/ULK1 signaling pathway rabbit