维普中文期刊产品整合服务
60篇 您的检索式:作者名="Jiyou"
    题名 作者 年代 出处 被引量
1Apelin-13 induces ERK1/2 but not p38 MAPK activation through coupling of the human apelin receptor to the Gi2 pathway显示文摘Bo Bai Jiyou Tang Haiqing Liu Jing Chen Yalin Li Wengang Song 2008Acta Biochimica et Biophysica Sinica2008,40,4:14
2Thermoplastic Starch Prepared with Different Plasticizers: Relation between Degree of Plasticization and Properties显示文摘Ethylene glycol, glycerol, sorbitol, formamide, and urea were used as plasticizers for the preparation of thermoplastic starch(TPS) from corn starch. The properties of TPS were tested by analysis method. The results showed that TPSs were more highly plasticized with amines than alcohols. For the same type of plasticizer, the degree of plasticization decreased as the molecular weight of plasticizer increased. The relationship between plasticization degree and TPS properties was characterized and described by mechanical properties and water absorption. The experimental results showed that when the degree of plasticization increased, the tensile strength decreased and the elongation at breakage and water absorption increased.左迎峰 GU Jiyou TAN Haiyan 张彦华 2015Journal of Wuhan University of Technology(Materials Science)2015,30,2:8
3Maturity assessment model for aircraft collaborative design software solution显示文摘In order to assure quality and control process in the development of the aircraft collaborative design software, a maturity assessment model is proposed. The requirements designing—house of quality is designed to evaluate the maturity degree of the solution, and the evaluation results can help to manage and control the development process. Furthermore, a fuzzy evaluation method based on the minimum deviation is proposed to deal with the fuzzy information. The quantitative evaluation result of the maturity degree can be calculated by optimizing the semantic discount factor aim for the minimum deviation. Finally, this model is illustrated and analyzed by an example study of the aircraft collaborative design software.HUO Ying QIU Peng ZHAI Jiyou 2018Journal of Systems Engineering and Electronics2018,29,6:4
4Responsive changes of rumen microbiome and metabolome in dairy cows with different susceptibility to subacute ruminal acidosis显示文摘Subacute ruminal acidosis(SARA)represents one of the most important digestive disorders in intensive dairy farms,and dairy cows are individually different in the severity of SARA risk.The objectives of the current study were to investigate differences in the ruminal bacterial community and metabolome in dairy cattle with different susceptibility to SARA.In the present study,12 cows were initially enrolled in the experiment.Based on average ruminal pH,4 cows with the lowest ruminal pH were assigned to the susceptible group(SUS,pH=5.76,n=4)and 4 cows with the highest ruminal pH assigned to the tolerant group(TOL,pH=6.10,n=4).Rumen contents from susceptible(SUS,n=4)and tolerant(TOL,n=4)dairy cows were collected through rumen fistula to systematically reveal the rumen microbial and metabolic alterations of dairy cows with different susceptibility to SARA using multi-omics approaches(16S and 18S rRNA gene sequencing and metabolome).The results showed that despite being fed the same diet,SUS cows had lower ruminal pH and higher concentrations of total volatile fatty acids(VFA)and propionate than TOL cows(P<0.05).No significant differences were observed in dry matter intake,milk yield,and other milk compositions between the SUS and TOL groups(P>0.05).The principal coordinates analysis based on the analysis of molecular variance indicated a significant difference in bacterial composition between the two groups(P=0.01).More specifically,the relative abundance of starch-degrading bacteria(Prevotella spp.)was greater(P<0.05),while the proportion of fiber-degrading bacteria(unclassified Ruminococcaceae spp.,Ruminococcus spp.,Papillibacter,and unclassified Family_-XIII)was lower in the rumen of SUS cows compared with TOL cows(P<0.05).Community analysis of protozoa showed that there were no significant differences in the diversity,richness,and community structure(P>0.05).Metabolomics analysis revealed that the concentrations of organic acids(such as lactic acid),biogenic amines(such as histamine),and bacterial degradation products(such as hypoxanthine)were significantly higher in the SUS group compared to the TOL group(P<0.05).These findings revealed that the higher proportion of starch-degrading bacteria/lower fiber-degrading bacteria in the rumen of SUS cows resulted in higher VFA-producing capacity,in particular propionate.This caused a disruption in metabolic homeostasis in the rumen which might be the reason for the higher susceptibility to SARA.Overall,these findings enhanced our understanding of the ruminal microbiome and metabolic changes in cows susceptible to SARA.Tao Zhang Yingyu Mu Ruiyang Zhang Yanfeng Xue Changzheng Guo Wangpan Qi Jiyou Zhang Shengyong Mao 2022Animal Nutrition2022,,1:4
5The UV Aging Properties of Maleic Anhydride Esterified Starch/Polylactic Acid Composites显示文摘Esterified starch/polylactic acid(ES/PLA) blending composite was prepared by melting extrusion with maleic anhydride esterified starch and PLA as the raw materials. The composite was accelerated aging by using UV aging box, and its properties were characterized by Fourier transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM), X-ray diffraction(XRD), thermo gravimetric analysis(TGA) and mechanical testing machine. FT-IR and SEM results show that the infrared absorption peak intensities of C-O, C-H, and C=O in aged samples decrease gradually with increasing aging time. The damage degree of surface and internal of aged samples increases gradually. XRD analysis results show that after aging treatment, the crystalline diffraction peak of thermoplastic esterified starch at 2θ = 21° disappears and the diffraction peaks of PLA at 2θ = 16.5° appear, indicating that the hydrolysis rate of esterified starch is greater than that of PLA. The crystallinity of PLA in aged sample shows an increasing trend at first followed by a decreasing one along with the increasing time of aging treatment, suggesting that the hydrolysis of amorphous regions of PLA is more preferential than its crystalline regions. Because of the influence of crystal structure and the change of composition structure, the initial decomposition temperature of aging test specimen gradually increases with the extension of aging time. The maximum decomposition rate temperature and residual mass increases at first, and then decrease after the aging time extending to 1600 h. As the aging time increases, the damage degree of combination interface between esterification starch and PLA is exacerbated, resulting in the tensile strength and bending strength of aged specimen decreasing gradually.左迎峰 吴义强 GU Jiyou ZHANG Yanhua 2017Journal of Wuhan University of Technology(Materials Science)2017,32,4:3
6Effect of Starch/Polylactic Acid Ratio on the Interdependence of Two-Phase and the Properties of Composites显示文摘Starch/polylactic acid(PLA) composites were prepared by melt extrusion, with corn starch and PLA as raw materials, glycerol as the plasticizer. Effects of starch/PLA ratio on the interdependence of two-phase and other properties of the composites were studied. The combination of results of TGA with SEM indicated that the interdependence between starch and PLA was increased gradually as the starch/PLA ratio reduced. DSC results showed that the glass transition temperature(Tg), melting temperature(Tm) and degree of crystallinity of PLA in composites were increased gradually, whereas the cold crystallization temperature(Tc) was gradually decreased as the starch/PLA ratio reduced. The rheological properties of composites were closely related with the interdependence of two-phase, with reducing starch/PLA proportion, the interdependence was increased, and then the strain for storage modulus was firstl reduced and then gradually increased. Frequency scanning showed that the storage modulus and complex viscosity were decreased with reducing starch content. As the starch/PLA ratio reduced, the matrix phase PLA was increased, so that the strength of composites was increased gradually, whereas water absorption rate was decreased gradually.左迎峰 GU Jiyou CAO Jun WEI Shuangying TAN Haiyan 张彦华 2015Journal of Wuhan University of Technology(Materials Science)2015,30,5:3
7Growth Effect of Biennial Seedlings of Half-sib Families of Cyclobalanopsis glauca显示文摘The seedling height and ground diameter of 42 half-sib families of biennial Cyclobalanopsis glauca were investigated and compared. The results showed that there were extremely significant differences between different families in the terms of seedling height and ground diameter. According to the seedling height and ground diameter,families 39,27,28 and 19 of C. glauca were superior to other families at the seedling stage.Jiyou WU Yong CHENG Minggao CHEN Jiafa CHEN Zhe WU Dezhi LIAO Yao SHU 2018Agricultural Biotechnology2018,7,5:3
8On the Existence for Some Special Primitive Elements in Finite Fields显示文摘Let F_q be a finite field of characteristic p. In this paper, by using the index sum method the authors obtain a sufficient condition for the existence of a primitive elementα∈ F_(q^n) such that α + α^(-1)is also primitive or α + α^(-1)is primitive and α is a normal element of F_(q^n) over F_q.Qunying LIAO Jiyou LI Keli PU 2016Chinese Annals of Mathematics,Series B2016,37,2:2
9Non-aqueous capillary electrophoresis for simultaneous separation and determination of three major active components in traditional medicinal preparations显示文摘Cunhong Li Jiyou Zhang Anjia Chen Jianping Xie Xingguo Chen Zhide Hu 0,,:1
10On the subset sum problem over finite fields显示文摘Jiyou Li Daqing Wan 2008Finite Fields and Their Applications2008,,4:1
11Effects of a vocabulary acquisition and assessment system on students'performance in a blended learning class for English subject 显示文摘Jiyou Jia Yuhao Chen Zhuhui Ding Meixian Ruan 2012Computers & Education2012,,58:1
12Prepa- ration and Properties of Starch-based Wood Adhesive with High Bonding Strength and Water Resistance显示文摘ZHANG YANHUA DING LONGLONG GU JIYOU 2015Carbohydrate polymers2015,115,:1
13Fabrication and reaction mechanism of urea-formaldehyde resin adhesive with isocyanate显示文摘ZHANG YANHUA GU JIYOU TAN HAIYAN 2013Journal of Adhesion Science and Technology2013,27,20:1
14Spectral characteristics of the pine leaves damaged by pine moth and a model to detect the damage early 显示文摘Wu Jiyou Ni Jian 1995Remote Sensing of Environment1995,10,4:1
15Study on per- formance of a heat pump water heater using suction stream liquid injection显示文摘Cao Feng Fei Jiyou Xing Ziwen 2009Applied Thermal Engineering2009,29,1415:1
16Straw based particleboard bonded with composite adhesives显示文摘ZHANG YANHUA GU JIYOU TAN HAIYAN 2011BioRes2011,6,1:1
17Fluorescence studies on the interactions of barbaloin with bovine serum albumin显示文摘TIAN Jianniao LIU Jiaqin ZHANG Jiyou 2003Chem Pharm Bull(Tokyo)2003,51,:1
18Quantification of noradrenaline and dopamine in Portulace oleracea L by capillary electrophoresis with laser-induced fluorescence detection显示文摘Jiyou Zhang Xingguo Chen Zhide Hu 2002Analytica Chimica Acta2002,471,:1
19Study on perform- ance of a heat pump water heater using suction stream liq- uid injection显示文摘Cao Feng Fei Jiyou Xing Ziwen 2009Applied Thermal Engineering2009,29,1415:1
20Status of research and development of wood adhesives with low formaldehyde emission 显示文摘Jiyou Gu 2008Adhe- sion2008,29,2:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费