检索结果-南通市图书馆

New algorithm of shape-finding of suspension bridge with spatial cables

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Theoretical & Applied Mechanics Letters 2023年第1期13卷 33-40页

作者： Xiao-Kang deng zhuo deng Xin Ren School of Automobile and Traffic Engineering Wuhan University of Science and TechnologyWuhan 430081China North China Branch of China Construction Eighth Engineering Bureau Co. Ltd.Tianjin300450China

A new algorithm is proposed to solve the problems of shape-finding of suspension bridge with spatial cables what include tedious iteration,slow convergence speed and even no convergent under some *** this paper,the stress analysis of the main cable is carried out,and the relationship between the slope change and the coordinate change is *** paper also discussed how to find the minimum slope point of symmetrical or asymmetric main cable,and the deformation compatibility equation is established and solved to obtain the shape of main *** algorithm in this paper can ensure the convergence of the solution for the suspension bridge with spatial *** calculation accuracy is high through the demonstration of the calculation examples.

关键词： Spatial cables Suspenders Shape-finding Slope of cable Coupling Unequal height main tower

Butyrate in combination with forskolin alleviates necrotic enteritis,increases feed efficiency,and improves carcass composition of broilers

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2022年第4期13卷 1115-1125页

作者： Qing Yang Binlong Chen Kelsy Robinson Thiago Belem Wentao Lyu zhuo deng Ranjith Ramanathan Guolong Zhang Department of Animal and Food Sciences Oklahoma State UniversityStillwaterOKUSA College of Animal Science Xichang UniversityXichangSichuanChina Poultry Production and Product Safety Research Unit USDA–Agricultural Research Service(ARS)FayettevilleARUSA State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Agro-product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhouChina Center for Excellence in Hip Disorders Texas Scottish Rite Hospital for ChildrenDallasTXUSA.

Background:The emergence of antimicrobial resistance has necessitated the development of effective alternatives to antibiotics for livestock and poultry *** study investigated a possible synergy between butyrate and forskolin(a natural labdane diterpene)in enhancing innate host defense,barrier function,disease resistance,growth performance,and meat quality of ***:The expressions of representative genes involved in host defense(AvBD9 and AvBD10),barrier function(MUC2,CLDN1,and TJP1),and inflammation(IL-1β)were measured in chicken HD11 macrophages in response to butyrate and forskolin in the presence or absence of bacterial lipopolysaccharides(LPS).Intestinal lesions and the Clostridium perfringens titers were also assessed in ***-challenged chickens fed butyrate and forskolincontaining Coleus forskohlii(CF)extract individually or in ***,growth performance and carcass characteristics were evaluated in broilers supplemented with butyrate and the CF extract for 42 ***:Butyrate and forskolin synergistically induced the expressions of AvBD9,AvBD10,and MUC2 in chicken HD11 cells(P<0.05)and the synergy was maintained in the presence of *** and forskolin also suppressed LPS-induced IL-1βgene expression in HD11 cells in a synergistic manner(P<0.05).The two compounds significantly reduced the intestinal lesions of ***-challenged chickens when combined(P<0.05),but not ***,butyrate in combination with forskolin-containing CF extract had no influence on weight gain,but significantly reduced feed intake(P<0.05)with a strong tendency to improve feed efficiency(P=0.07)in a 42-d feeding ***,the butyrate/forskolin combination significantly decreased abdominal fat deposition(P=0.01)with no impact on the carcass yield,breast meat color,drip loss,or pH of d-42 ***:Butyrate and forskolin has potential to be developed as novel antibiotic alternatives to improve

关键词： Antibiotic alternatives Butyrate Forskolin Necrotic enteritis Poultry

THE PREPARATION OF TITANIUM OXIDE OVERLAYER ON Fe(110) FOR SURFACE SCIENCE STUDIES

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1993年第1期4卷 79-82页

作者： Jun zhuo deng Hong Li WANG Synchrotron Radiation Laboratory Institute of High Energy Physics P.O.Box 918Beijing 100039 Laboratory for Catalysis Dalian Institute of Chemical Physics P.O.Box 110Dalian 116023

The preparation, characterization and properties of titania overlayer on Fe(110) substrate is hereby reported. The TiO_X overlayer was found to form in a layer-by-layer mode with a suboxide of titanium in the form of TiO migrating into the Fe substrate and Fe migrating into the deposited layer of TiO_X simultaneously during the deposition.

关键词： THE PREPARATION OF TITANIUM OXIDE OVERLAYER ON Fe FOR SURFACE SCIENCE STUDIES TiO 110

PROMOTING EFFECT OF TiO_X OVERLAYER ON THE DISSOCIATION OF CO ON Fe(110)

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1993年第2期4卷 167-170页

作者： Jun zhuo deng Hong Li WANG Synchrotron Radiation Laboratory Institute of High Energy Physics Academia SinicaBeijing100039 Laboratory for Catalysis Dalian Institute of Chemical Physics Academia SinicaP.O.Box 110Dalian 116023

The adsorption of CO on Fe(110)with different coverages of tita- nia has been studied by AES,XPS,*** is proposed that the adsorption sites of CO in this system are not only blocked by the deposited TiO_X,but also by t... 详细信息

关键词： 110 IML PROMOTING EFFECT OF TiO_X OVERLAYER ON THE DISSOCIATION OF CO ON Fe CO TiO

Over-expression of Toll-like receptor 2 up-regulates heme oxygenase-1 expression and decreases oxidative injury in dairy goats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2017年第2期8卷 351-360页

作者： Shoulong deng Kun Yu Wuqi Jiang Yan Li Sutian Wang zhuo deng Yuchang Yao Baolu Zhang Guoshi Liu Yixun Liu Zhengxing Lian State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of SciencesBeijing 100101 China Laboratory ofAnimal Genetics and Breeding College of Animal Science and TechnologyChina Agricultural University Beijing 100193 People's Republic of China National key Lab of Agrobiotechnology College of Biological SciencesChina Agricultural University Beijing 100193 People's Republic of China. Department of Animal Science Oklahoma State University Stillwater OK74078 USA College of Animal Science and Technology Northeast Agricultural University Harbin 150030 People's Republic of China State Oceanic Administration Beijing 100860 People's Republic of China

Background： Mastitis, an infection caused by Gram-positive bacteria, produces udder inflammation and oxidative injury in milk-producing mammals. Toll-like receptor 2（TLR2） is important for host recognition of invading Grampositive microbes. Over-expression of TLR2 in transgenic dairy goats is a useful model for studying various aspects of infection with Gram-positive bacteria, in ***： We over-expressed TLR2 in transgenic dairy goats. Pam3CSK4, a component of Gram-positive bacteria,triggered the TLR2 signal pathway by stimulating the monocytes-macrophages from the TLR2-positive transgenic goats, and induced over-expression of activator protein-1（AP-1）, phosphatidylinositol 3-kinase（PI3K） and transcription factor nuclear factor kappa B（NF-κB） and inflammation factors downstream of the signal ***： Compared with wild-type controls, measurements of various oxidative stress-related molecules showed that TLR2, when over-expressed in transgenic goat monocytes-macrophages, resulted in weak lipid damage, high level expression of anti-oxidative stress proteins, and significantly increased m RNA levels of transcription factor NF-E2-related factor-2（Nrf2） and the downstream gene, heme oxygenase-1（HO-1）. When Pam3CSK4 was used to stimulate ear tissue in vivo the HO-1 protein of the transgenic goats had a relatively high expression ***： The results indicate that the oxidative injury in goats over-expressing TLR2 was reduced following Pam3CSK4 stimulation. The underlying mechanism for this reduction was increased expression of the anti-oxidation gene HO-1 by activation of the Nrf2 signal pathway.

关键词： Haem oxygenase Nrf2 signal pathway Toll-like receptor 2 Transgenic goats

Fabrication of Non-woven Fabric-Based SERS Substrate for Direct Detection of Pesticide Residues in Fruits

在线全文

学校读者我要写书评

暂无评论

Journal of Analysis and Testing 2017年第4期1卷 322-329页

作者： Lemei Cai zhuo deng Jing Dong Shidong Song Yiru Wang Xi Chen Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamenFujian 361005China

In surface-enhanced Raman scattering(SERS),flexible substrate plays an important role in target molecular collection from various shape surfaces and increases the analytical *** this study,silver nanoparticles(Ag NPs)were deposited on a non-woven fabric used as an SERS substrate by self-assembly,in situ growing or the self-assembly/in situ growing combination method.4-Aminothiophenol was selected as a model molecular for the evaluation of the SERS performance using the *** Ag NPs substrate prepared by self-assembly/in situ growing method presented the best Raman enhancement effect and its enhancement factor was estimated as high as *** substrate was applied to the determination of four pesticide residues on the surfaces of fruit samples through wipe sampling,and the results revealed the good reproducibility of SERS responses and high detection *** prepared flexible substrate was simple to fabricate and environmentally *** could be expected to be a useful tool in rapid on-site test of pesticide residues on fruit surfaces because of its high sensitivity,convenience and non-destructive characteristics.

关键词： SERS Non-woven fabric Flexible substrate Pesticide residues

Application of Simultaneous Technique of Capillary Zone Electrophoresis Photothermal Interference Spectrometry for Monitoring Chelating Reaction of Light Rare Earth with Tribromoarsenazo

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 Chemical Letters 1997年第5期8卷 425-426页

作者： Yong Gang HU Yan zhuo deng Jie Ke CHENG(Department of Chenustry, Center of Analysis and Testing, Wuhan Umversity, Wuhan 430072) WUHAN UNIV DEPT CHEMCTR ANAL & TESTINGWUHAN 430072PEOPLES R CHINA

A novel high sensihtity, small-volume photothermal intheence detector has beenintroduced for capillap zone electrophoresis separation analysis. The utility of thes sdriulboconstecheque for momtomp chelating reachon of... 详细信息

关键词： Application of Simultaneous Technique of Capillary Zone Electrophoresis Photothermal Interference Spectrometry for Monitoring Chelating Reaction of Light Rare Earth with Tribromoarsenazo

Spatial distribution and habitat suitability of Biomphalaria straminea,intermediate host of Schistosoma mansoni,in Guangdong,China

在线全文

学校读者我要写书评

暂无评论

Infectious Diseases of Poverty 2018年第1期7卷 1153-1162页

作者： Ya Yang Shao-Yu Huang Fu-Quan Pei Yue Chen Qing-Wu Jiang zhuo-Hui deng Yi-Biao Zhou Key Laboratory of Public Health Safety Ministry of EducationTropical Disease Research CenterDepartment of EpidemiologySchool of Public HealthFudan UniversityShanghaiChina Guangdong Provincial Center for Disease Control and Prevention WHO Collaborating Centre for SurveillanceResearch and Training of Emerging Infectious DiseasesGuangzhouGuangdongChina School of Epidemiology and Public Health Faculty of MedicineUniversity of OttawaOttawaCanada

Background:Biomphalaria straminea is an invasive vector in China,posing a significant threat to public *** the factors affecting the establishment of this snail is crucial to improve our ability to manage its dispersal and potential risk of schistosomiasis *** study sought to determine the spatial distribution of *** in China's Mainland and whether environmental factors were divergent between places with and without ***:A malacological survey of *** was conducted in Guangdong Province,*** were identified using anatomical *** and sediment samples were taken,and their physicochemical properties were analyzed using national standard *** and climatic variables were also collected for each *** compared the environmental characteristics between sites with and without *** using Mann-Whitney U *** further used generalized linear mixed models to account for seasonal ***:*** was found at six sites,including one in Dongguan and five in *** map found a hot spot of *** distribution at Shenzhen and Hong *** occupied by *** were characterized by higher median altitude,mean annual precipitation and moderate *** with snails had higher median concentrations of total nitrogen,nitrate and nitrites,ammoniacal nitrogen,calcium,zinc and manganese but lower dissolved oxygen and *** with snails had higher median copper,zinc and *** was associated with maximum temperature of the warmest month(pMCMC<0.001)and sediment zinc(pMCMC<0.001).Conclusions:*** is distributed in Shenzhen and its surrounding areas in Guangdong,*** with and without *** differed in the maximum temperature of the warmest month and sediment *** should be continued to monitor the dispersal of this snail in China.

关键词： Biomphalaria straminea Distribution Environmental factor Guangdong China

A NOVEL POLYMER ENZYME LINKED IMMUNOASSAY METHOD AND ITS APPLICATIONS

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 Chemical Letters 1994年第4期5卷 325-326页

作者： Feng LIU Feng Hua LIU Ren Xi zhuo Yan zhuo deng Yun E ZHEN (Department of Chemistry, Wuhan Univ., Wuhan 430072)

During the course of study, we found that both poly (N-isopropylacrylamide ) (PNIP) and PNIP-Ab (enzyme-labelled antibody)could be adhere tightly to a cellulose acetale-nitrate membrane, and that the retention of PNIP-Ab on the membrane increased over 30-fold when compared with the unconjugated *** we used this characteristic to develop a novel immunoassay method-polymer enzyme linked immunoassay method: homogeneous antigen-antibody reaction and heterogeneous separation process. When applied for detection of human serum HBsAg, this immunoassay system can detect as little as 1 ng/ml of human serum HBsAg.

关键词： ITS A NOVEL POLYMER ENZYME LINKED IMMUNOASSAY METHOD AND ITS APPLICATIONS