检索结果-南通市图书馆

Insights into the proteomic profile of newly harvested corn and metagenomic analysis of the broiler intestinal microbiota

引用

Journal of Animal Science and Biotechnology 2022年第3期13卷 787-801页

作者： Dafei Yin Youli Wang Liqun Wang Yuqin Wu Xiaoyi Bian Samuel e.Aggrey Jianmin Yuan College of Animal Husbandry and Veterinary Medicine Shenyang Agricultural UniversityShenyang 110866China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural University100193 BeijingChina NutriGenomics Laboratory Department of Poultry ScienceUniversity of GeorgiaAthensGA 30602USA

Background:The use of newly harvested corn in feed causes wet droppings in broilers and increased feed cost which was termed as“new season grain problem”.The present study was conducted to evaluate the proteomic profile of newly harvested corn and the subsequent influence on intestinal microbiol community for broiler ***:Newly harvested corn stored for either half a month(HM)or two months(TM)was used,and the pasting properties,total soluble sugars,and proteomic analysis technology was used to explore the influence of storage on natural aging corn ***,seventy-two 7-day-old Ross 308 male broiler chicken were fed with different stored *** metabolizable energy(AMe),digesta viscosity,intestinal morphology and microbiota were examined to explore the influence of feed corn storage on broiler ***:Pasting properties in the TM corn exhibited decreased viscoelastic *** studies found a total of 26 proteins that were differentially expressed between the two treatment *** involved in starch and polysaccharides biosynthesis were upregulated in TM compared with *** fed on TM diet had higher relative energy utilization compared to the HM *** increased corn storage,the relative digesta viscosity decreased significantly(P≤0.05).The total number of goblet cells and lymphocytes was lower in chickens fed the TM *** microbiota data showed that the TM chickens had decreased abundance of diarrheal bacteria such as Hungatella hathewayi and Bacteroides fragilis,and increased butyrate-producing bacteria such as Alistipes compared to the HM ***:Storage of newly harvested corn induced the synthetic reaction of large molecules and changed the solubility of starch and protein with increasing soluble sugars and decreasing pasting properties that may improve the fermentation of intestinal microbiota,improve the energy utilization and protect gut health without the risk of diarrhe

关键词： Broilers Corn Metagenome Proteome Storage

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

effects of developmental plasticity on heat tolerance may be mediated by changes in cell size in Drosophila melanogaster

引用

Insect Science 2020年第6期27卷 1244-1256页

作者： Nadja Verspagen Felix P.Leiva Irene M.Janssen Wilco C.e.P.Verberk Department of Animal ecology and Physiology Institute for Water and Wetland ResearchRadboud UniversityNijmegenThe Netherlands Department of Human Genetics Radboud University Medical CenterRadboud Institute for Molecular Life SciencesNijmegenThe Netherlands

There is a growing interest in the physiology underpinning heat tolerance of ectotherms and their responses to the ongoing rise in ***,there is no consensus about the underlying physiological *** to''the maintain aerobic scope and regulate oxygen supply^hypothesis,responses to warming at different organizational levels contribute to the ability to safeguard energy metabolism via aerobic *** the cellular level,a decrease in cell size increases the capacity for the uptake of resources(e.g.,food and oxygen),but the maintenance of electrochemical gradients across cellular membranes implies greater energetic costs in small *** this study,we investigated how different rearing temperatures atTected cell size and heat tolerance in the fruit fly Drosophila *** tested the hypothesis that smallcr-celled flies are more tolerant to acute,intense heat stress whereas larger-celled flies are more tolerant to chronic,mild heat *** used the thermal tolerance landscape framework,which incorporates the intensity and duration of thermal *** temperatures strongly affected both cell size and survival *** found different effects of developmental plasticity on tolerance to either chronic or acute heat ***-reared flies had both smaller cells and exhibited higher survival times under acute,intense heat stress when compared to cold-reared ***,under chronic,mild heat stress,the situation was reversed and cold-reared flies,consisting of larger cells,showed better *** differences in heat tolerance could have resulted from direct effects of rearing temperature or they may be mediated by the correlated changes in cell ***,our results are consistent with the idea that a smaller cell size may confer tolerance to acute temperatures via enhanced oxygen supply,while a larger cell may confer greater tolerance to chronic and less intense heat stress via more efTicient use of resources.

关键词： cell size heat stress rearing temperature thermal death time thermal tolerance

来源：

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

绿原酸生物学功能及其对畜禽健康生长的调控作用

引用

现代畜牧科技 2024年第9期 66-71页

作者：李美娟代国滔徐景峨冯宇隆贵州省农业科学院畜牧兽医研究所贵州贵阳550005

绿原酸是由咖啡酸与奎尼酸生成的缩酚酸,广泛存在于多种植物的根、茎、叶和果实中,具有调节糖脂代谢、保肝、抗肿瘤、抗炎、抑菌等多种生物学功能。近年研究发现,绿原酸在提高畜禽生产性能,改善畜禽肠道健康方面具有积极影响。该文综述... 详细信息

绿原酸是由咖啡酸与奎尼酸生成的缩酚酸,广泛存在于多种植物的根、茎、叶和果实中,具有调节糖脂代谢、保肝、抗肿瘤、抗炎、抑菌等多种生物学功能。近年研究发现,绿原酸在提高畜禽生产性能,改善畜禽肠道健康方面具有积极影响。该文综述了绿原酸的生物学功能及其对畜禽生产性能和肠道健康的调节作用,展望了绿原酸作为新型饲料添加剂的应用前景,旨在为绿原酸作为新型饲料添加剂提供资料参考。

关键词：绿原酸生物学功能饲料添加剂

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Soft X-ray amplification in 3- and 4-mm-diameter capillaries

引用

Chinese Optics Letters 2004年第11期2卷 658-660页

作者：程元丽赵永蓬王骐 Taniguch Y.Hayashi e.Hotta National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150001 National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150001 Department of energy Sciences Tokyo Institute of Technology Tokyo Japan

Laser pulses with energy of -10μJ are generated at 46.9 nm on the 3p-3s transition of the Ne-like Ar by a fast capillary discharge setup in both 3-and 4-mm channels. The dependence of the laser output pulse energy on the pressure of Ar gas is measured for 3-mm-diameter capillaries at currents of 25, 30, and 35 kA. Under the same discharge conditions used in 3-mm capillaries, experiments indicate that higher and faster current pulses are required to produce soft X-ray amplification in 4-mm-diamater capillaries.

关键词： Argon Capillarity Laser pulses

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and Anti-VSMC Vegetation Activities of New Aurone Derivatives

引用

Chemical Research in Chinese Universities 2012年第3期28卷 438-442页

作者： FAN Rui BAN Shu-rong FeNG Xiu-e ZHAO Chen-xiao LI Qing-shan School of Pharmaceutical Science Shanxi Medical UniversityTaiyuan 030001P.R.China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100083P.R.China

A series of new aurone derivatives was prepared by means of a practical route and their anti-vascular smooth muscle cells（VSMC） vegetation activities were evaluated by the 3-（4,5-dimethylthlazol-2-yl）-2,5- diphenyltetrazolium bromide（MTT） method with tetrandrine as a positive contrast drug. The structures of the com- pounds were confirmed by 1H NMR, 13C NMR and electrospray ionization mass spectrometry（eSI-MS）. Several new compounds exhibited promising activity against VSMC proliferation and the preliminary structure-activity relation- ships（SAR） were discussed in order to investigate the essential structures required for their bioactivities.

关键词： Aurone derivative Anti-vascular smooth muscle cell(VSMC) vegetation activity Synthesis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Half-life of bismuth isotopes predicted by the Coulomb and proximity potential model; a proposition for the spherical nuclei

引用

Chinese Physics C 2012年第10期36卷 964-966页

作者： e.Javadimanesh H.Hassanabadi A.A.Rajabi H.Rahimov S.Zarrinkamar Physics Department Shahrood University of TechnologyShahroodIran Computer engineering Department Shahrood University of TechnologyShahroodIran P.O.Box ***-316 ShahroodIran Department of Basic Sciences Garmsar BranchIslamic Azad UniversityGarmsarIran

We know that the ground state energy, half-life, spin and parity of the heavy nuclei can be determined via the study of alpha decay. Bearing this in mind, we have calculated the penetration probability in the barrier, the decay constant and thereby the half-lives of 21 isotopes of Bi by using the proximity potential model. The comparison with the existing data is motivating.

关键词： Alpha decay bismuth half-life

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

文献快报(1):早期氟暴露对学龄儿童心血管代谢健康存在影响

引用

中国学校卫生 2024年第2期45卷 182-182页

作者：沈玉婷(编译) 孙莹(编译) 安徽医科大学公共卫生学院儿少卫生与妇幼保健学系

氟化物是一种天然矿物质,广泛存在于食品、水和牙科产品中,儿童人群氟化物暴露较普遍。实验研究表明,氟化物诱导的脂质紊乱对心脏代谢健康具有潜在影响。美国西奈山伊坎医学院Damaskini Valvi教授领衔的团队,使用“肥胖、生长、环境和... 详细信息

氟化物是一种天然矿物质,广泛存在于食品、水和牙科产品中,儿童人群氟化物暴露较普遍。实验研究表明,氟化物诱导的脂质紊乱对心脏代谢健康具有潜在影响。美国西奈山伊坎医学院Damaskini Valvi教授领衔的团队,使用“肥胖、生长、环境和社会应激源计划研究”(Programming Research in Obesity,Growth,environment and Social Stressors,PROGReSS)队列的数据,对500名墨西哥儿童进行了研究,测量儿童4,6和8岁时的膳食氟含量,首次探讨重复测量的氟化物含量与儿童心血管代谢结局之间的关联。

关键词：心血管代谢氟化物含量脂质紊乱 PROGReSS 西奈山重复测量氟暴露氟含量

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Seasonal shifts in the solute ion ratios of vadose zone rock moisture from the eel River Critical Zone Observatory

引用

Acta Geochimica 2017年第3期36卷 385-388页

作者： Jennifer L.Druhan Nicole Fernandez Jia Wang William e.Dietrich Daniella Rempe Department of Geology University of Illinois Urbana Champaign Department of earth and Planetary Science University of California Berkeley Jackson School of Geosciences University of Texas at Austin

One of the greatest challenges in critical zone studies is to document the moisture dynamics, water flux,and solute chemistry of the unsaturated, fractured and weathered bedrock that lies between the soil and groundwater table. The central impediment to quantifying this component of the subsurface is the difficulty associated with direct observations. Here, we report solute chemistry as a function of depth collected over a full year across the shale-derived vadose zone of the eel River Critical Zone Observatory using a set of novel sub-horizontal wellbores,referred to as the vadose zone monitoring system. The results of this first geochemical glimpse into the deep vadose zone indicate a dynamic temporal and depth-resolved structure. Major cation concentrations reflect seasonal changes in precipitation and water saturation, and normalized ratios span the full range of values reported for the world's largest rivers.

关键词： Vadose zone Solute ion ratios Critical Zone Observatory Seasonal solute dynamics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Low Lake-Level Record according to the Selin Co Stratigraphical Basis and Multi-Proxies during the Last Glacial Maximum in the Central Tibetan Plateau

引用

Acta Geologica Sinica(english edition) 2018年第5期92卷 2058-2059页

作者： ZHANG Chengjun DeMBeLe Blaise ZHANG Wanyi ZHANG Jingya WANG Hansheng e Gang ZHeNG Qi College of earth Sciences & Key Laboratory of Mineral Resources in Western China (Gansu Province) Lanzhou University

Objective The lake levels in the eastern and southern Asia are regarded as low lake-level owing to precipitation decreasing based on the records of lake-level fluctuation in the continental interior lakes since the last glacial maximum（LGM）（14C 18±1 kaBP,since 20 kaBP）in the Central *** lake-level appeared in the transition belt between western Kunlun Mountain and the central Tibetan Plateau.

关键词： Co TOC The Low Lake-Level Record according to the Selin Co Stratigraphical Basis and Multi-Proxies during the Last Glacial Maximum in the Central Tibetan Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

1.55MeV^3He离子辐照单晶Si引起的损伤效应研究

引用

核技术 2004年第11期27卷 818-822页

作者：刘昌龙 Ntsoenzok e 天津大学理学院物理系 CeRI/CNRS 3A rue de la Ferollerie45071 Orleans Cedex 2France

室温下使用1.55 MeV、5×1015×1016/cm2注量的3He离子注入单晶Si,采用透射电子显微镜(TeM)观测分析了高温退火后单晶Si中由注入引起的损伤形貌,同时使用核反应分析(NRA)技术研究了3He气体原子的热解吸。结果显示,低注量3He离子注入在S... 详细信息

室温下使用1.55 MeV、5×1015×1016/cm2注量的3He离子注入单晶Si,采用透射电子显微镜(TeM)观测分析了高温退火后单晶Si中由注入引起的损伤形貌,同时使用核反应分析(NRA)技术研究了3He气体原子的热解吸。结果显示,低注量3He离子注入在Si中产生的缺陷主要为一些小尺寸的位错或位错环;在中等照射剂量,退火导致了气泡和气泡团簇的形成并伴随着高密度的位错环从这些气泡团簇中发射出来;而对于较高的照射剂量,3He离子注入加上随后的高温退火则在离子射程附近产生了一个具有确定边界的空腔带。结合NRA结果对实验现象进行了分析。

关键词：单晶Si MeV级^3He离子注入气泡团簇空腔透射电镜

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：