检索结果-南通市图书馆

The generation and evolution of the Archean continental crust:The granitoid story in southeastern Brazil

Geoscience Frontiers 2022年第4期13卷 144-164页

作者： Rodrigo S.Marimon Chris j.Hawkesworth Elton L.Dantas rudolph a.j.trouw Wilson Teixeira Peter C.Hackspacher Allen Fetter Ciro A.Ávila Silvia Volante Atlas V.Corrêa Neto Everton M.Bongiolo Rodrigo Vinagre Maurício Simon Depto.de Geologia IGEOUniversidade Federal do Rio de JaneiroUFRJRio de JaneiroRJBrazil School of Earth Sciences University of BristolBristolUnited Kingdom Instituto de Geociências Universidade de BrasíliaUnBBrasíliaDFBrazil Instituto de Geociências Universidade de São PauloUSPSão PauloSPBrazil Instituto de Geociências e Ciências Exatas Universidade Estadual PaulistaRio ClaroSPBrazil Institute of Geology Mineralogy and GeophysicsRuhr-Universität BochumUniversitätsstraße 15044801 BochumGermany ISOTOPIA Lab School of EarthAtmosphere and EnvironmentMonash UniversityWellington RdClaytonVIC 3800Australia Programa de Pós-Graduação em Geociências IGUniversidade Federal do Rio Grande do SulUFRGSPorto AlegreRSBrazil

The Archean Eon was a time of geodynamic *** evidence of these transitions come from igneous/metaigneous rocks,which dominate cratonic segments *** data for granitoids from an Archean basement inlier related to the Southern S?o Francisco Craton(SSFC),are integrated with geochronological,isotopic and geochemical data on Archean granitoids from the *** rocks are divided into three main geochemical groups with different ages:(1)TTG(3.02–2.77 Ga);(2)mediumto high-K granitoids(2.85–2.72 Ga);and(3)A-type granites(2.7–2.6 Ga).The juvenile to chondritic(Hf-Nd isotopes)TTG were divided into two sub-groups,TTG 1(low-HREE)and 2(high-HREE),derived from partial melting of metamafic rocks similar to those from adjacent greenstone *** compositional diversity within the TTG is attributed to different pressures during partial melting,supported by a positive correlation of Dy/Yb and Sr/Zr,and batch melting *** proposed TTG sources are geochemically similar to basaltic rocks from modern island-arcs,indicating the presence of subduction processes concomitant with TTG ***~2.85 Ga to 2.70 Ga,the dominant rocks were K-rich *** are modeled as crustal melts of TTG,during regional metamorphism indicative of crustal *** compositional diversity is linked to:(i)differences in source composition;(ii)distinct melt fractions during partial melting;and(iii)different residual mineralogies reflecting varying P–T ***-collisional(~2.7–2.6 Ga)A-type granites reflect rifting in that they were closely followed by extension-related dyke swarms,and they are interpreted as differentiation or partial melting products of magmas derived from subduction-modified *** sequence of granitoid emplacement indicates subduction-related magmatism was followed by crustal thickening,regional metamorphism and crustal melting,and post-collisional extension,similar to that seen in younger Wilson *** is compelling evide

关键词： Granitoid petrogenesis Archean geodynamics Crustal evolution TTGs A-types Batch melting calculations

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

Mn＋1AXn Phonon Density of States： Ti3AlC2 and Ti3SiC2 Simulation and Experimentation Results

引用

journal of Chemistry and Chemical Engineering 2015年第4期9卷 253-261页

作者： Veronica Gray Gordon j Kearley Oliver Kirstein Ramzi Kutteh Erich H Kisi Daniel P. Riley Frans trouw School of Engineering University of Newcastle Callaghan NSW 2308 Australia Bragg Institute Australian Nuclear Science & Technology Organisation Lucas Heights NEW 2234 Australia European Spallation Source ESS AB Lund 22100 Sweden School of Physics University of Sydney Sydney NEW2006 Australia Institute of Materials Engineering Australian Nuclear Science & Technology Organisation Lucas Heights NEW2234 Australia Lujan Centre Los Alamos Neutron Science Center Los Alamos National Laboratory Los Alamos NM 87545 USA

For the first time detailed measurements of the DOS （density of states） for Ti3AIC2 and Ti3SiC2 are presented at temperatures between T = 10 and 100 K. For Ti3AIC2 a DFT （density functional theory） simulation of lattice dynamics is compared to experimental data demonstrating a noticeable difference between the spectra especially below 40 meV. In the case of Ti3SiC2 the DFT model is augmented with MD （molecular dynamics） simulations resulting in the measured and simulated spectra resembling one another more closely but still having significant differences below 40 meV. Within the experimental spectra, there are features up to and including 20 meV which are unaccounted for by the simulation. Tracing individual atoms generated by the computer models suggests anharmonic motion of Si within the Ti3SiC2. The results presented could explain differences between calculated elastic moduli using DFT harmonic lattice dynamics simulations and results from recent experiments.

关键词： Anharmonic anisotropic lattice dynamics Mn+1AXn phase ceramics ab initio molecular dynamics.

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

Supplementing oat hulls to the diet of suckling piglets altered their intestinal tract and colonic microbiota development

引用

Animal Nutrition 2023年第1期12卷 284-296页

作者： Hubèrt M.j.van Hees Koen Chiers Leo A.den Hartog Theo A.T.G.van Kempen Dominiek Maes Sam Millet Geert P.j.janssens Department of Veterinary and Biosciences Ghent UniversityMerelbekeBelgium trouw Nutrition Research and Development Amersfoortthe Netherlands Department of Pathology Ghent UniversityMerelbekeBelgium Animal Nutrition Wageningen University and ResearchWageningenthe Netherlands Department of Animal Science North Carolina State UniversityRaleighNCUSA Department of Reproduction Obstetrics and Herd HealthGhent UniversityMerelbekeBelgium ILVO(Flanders Research Institute for Agriculture Fisheries and Food)MelleBelgium

Current study evaluated the effect of a fine and coarsely ground insoluble dietary fibre source on the gastrointestinal development of suckling *** hulls(OH)were selected as a model feedstuff,rich in cellulose,lignin,and insoluble dietary *** experimental supplemental diets were formulated:a finely ground,low fibre and nutrient dense diet served as control(CON).For the 2 high fibre diets,15%heat-treated starch in CON was exchanged with OH,either finely(OH-f)or coarsely ground(OH-c).Litters of 10 primi-and multiparous sows(mean litter size 14.6±0.84)were *** a litter,experimental diets were allotted to triplets of 4 *** approximately 12 d of age,piglets’individual feed intakes were recorded 2 times per day when separated from their dam for 70 *** could suckle with their dam for the remainder of the *** d 24 and 25,from the total pool of 120 piglets,seven healthy well-eating piglets per treatment were selected for post-mortem evaluation,resulting in 14 replicates per *** of OH-c and OH-f did not impede clinical health and production performance of *** full stomach weights tended to be greater for OH-c compared to OH-f whereas CON was intermediate(P=0.083).Supplementing OH significantly increased ileal villus height and caecal dry matter concentration(P<0.05).For the colon,OH increased its length,contents weight,short-chain fatty acid concentration and reduced total bacterial count as well asγ-proteobacteria count and proportion(P<0.05).The OH-c treatment specifically increased full gastrointestinal tract weight and caecum contents weight compared to piglets fed CON and ***,OH-c reduced colonic crypt depth when compared to OH-f(P=0.018).In conclusion,supplementing OH to a diet for suckling piglets exerted subtle developmental effects on gastrointestinal morphology and colonic microbial *** effects were largely independent from the particle size of the OH.

关键词： Oat hull Insoluble fibre Gastrointestinal development Suckling piglet

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

Hydroxychloride trace minerals have a positive effect on growth performance,carcass quality and impact ileal and cecal microbiota in broiler chickens

引用

journal of Animal Science and Biotechnology 2021年第3期12卷 1112-1124页

作者： Sandra j.A.van Kuijk Yanming Han Ana Isabel Garcia-Ruiz Ana Rodiles trouw Nutrition R&D P.O.Box 2993800AGAmersfoortthe Netherlands trouw Nutrition R&D 45950 Casarrubios del MonteToledoSpain.

Background:The objective was to study the effect of hydroxychloride trace minerals(HTM)on growth performance,carcass quality and gut microbiota of broiler chickens in comparison to sulphate trace minerals(STM).In total 1440 male Ross 308 day-old chicks were divided into 12 replicate pens with 30 birds each per *** different treatments were tested according to a 2×2 factorial study design,where the animals received a three phase diet containing either inorganic Zn from sulphates or Zn from HTM in high(80 mg/kg Zn)or low Zn dosage(20 mg/kg Zn).In all treatments 15 mg/kg Cu was added from the same mineral source as the *** weight and feed intake were measured on day 0,10,27 and 34,while carcass and breast meat yields were measured at the end of the study(day 34).In addition,high-throughput sequencing analysis was performed in digesta samples from ileum and cecum to study the gut microbiome(day 34).Results:The results showed an improved(P<0.05)body weight of broiler chickens fed HTM,regardless of Zn level,on day 27,while on day 34 this effect remained as a tendency(P=0.0542).In the overall study period,birds fed HTM had a higher(P<0.05)average daily gain and average daily feed intake when compared to birds fed *** mineral source did not affect the carcass characteristics,however,feeding 80 mg/kg Zn resulted in a significantly higher(P=0.0171)breast meat yield,regardless of ***-throughput sequencing analysis of the microbiota revealed a higher microbial diversity in the ileum and cecum of HTM fed birds compared to STM fed *** differences were mainly found in the cecum,specifically between the group fed high and low Zn levels from *** correlated with the mineral contents observed in the cecal *** both groups fed 80 mg/kg Zn,the HTM group had more Streptococcaceae,Streptococcus,Clostridia,Weissella and Leuconostocaceae compared to the STM ***:HTM improved growth performance of broiler chickens;and th

关键词： Broiler chickens Growth performance Gut microbiota Hydroxychloride trace minerals

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 undigested protein-rich ingredients on polarised small intestinal organoid monolayers

引用

journal of Animal Science and Biotechnology 2020年第4期11卷 1026-1032页

作者： Soumya K.Kar Bart van der Hee Linda M.P.Loonen Nico Taverne johanna j.Taverne-Thiele Dirkjan Schokker Mari A.Smits Alfons j.M.jansman jerry M.Wells Host Microbe Interactomics Group Wageningen University&ResearchDe Elst 16708 WD WageningenThe Netherlands Laboratory of Microbiology Wageningen University&ResearchStippeneng 46708 WE WageningenThe Netherlands Wageningen Livestock Research Wageningen University&ResearchDe Elst 16708 WD WageningenThe Netherlands

Here, we describe the use of monolayers of intestinal epithelial cells derived from intestinal organoids and transcriptomics to investigate the direct effects of dietary protein sources on epithelial function. Mechanically dissociated 3 D organoids of mouse duodenum were used to generate a polarized epithelium containing all cell types found in the tissue of origin. The organoid-derived cell monolayers were exposed to 4%(w/v) of ‘undigested(non-hydrolysed)-soluble' fraction of protein sources used as feed ingredients [soybean meal(SBM) and casein], or alternative protein sources(spray dried plasma protein, and yellow meal worm), or controls for 6 h prior to RNA isolation and transcriptomics. All protein sources altered expression of unique biological processes in the epithelial cells. Exposure of intestinal organoids to SBM downregulated expression of retinol and retinoid metabolic processes as well as cholesterol and lipid biosynthetic pathways, consistent with the reported hypotriglyceridaemic effect of soy protein in vivo. These findings support the use of intestinal organoids as models to evaluate complex interactions between dietary ingredients and the intestinal epithelium and highlights some unique host effects of alternative protein sources in animal feed and potentially human food.

关键词： Alternative protein sources Casein Intestinal organoids Organoids Soybean meal Spray dried plasma protein Transcriptomics Yellow meal worm

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

Dietary fibre enrichment of supplemental feed modulates the development of the intestinal tract in suckling piglets

引用

journal of Animal Science and Biotechnology 2020年第1期11卷 183-193页

作者： H.M.j.Van Hees M.Davids D.Maes S.Millet S.Possemiers L.A.den Hartog T.A.T.G.van Kempen G.P.j.janssens Department of Nutrition Genetics and EthologyGhent UniversityMerelbekeBelgium Research and Development Trouw NutritionAmersfoortThe Netherlands Department of Internal and Vascular Medicine Amsterdam University Medical CentreAmsterdamThe Netherlands Department of Reproduction Obstetrics and Herd HealthGhent UniversityMerelbekeBelgium ILVO Eenheid DierMelleBelgium BioActor MaastrichtThe Netherlands Animal Nutrition Wageningen University and ResearchWageningenThe Netherlands North Carolina State University RaleighNCUSA.

Background:Commercial pre-weaning diets are formulated to be highly digestible and nutrient-dense and contain low levels of dietary *** contrast,pigs in a natural setting are manipulating fibre-rich plant material from a young ***,dietary fibre affects gastrointestinal tract(GIT)development and health in older *** hypothesised that supplemental diets that contain vegetal fibres are accelerating GIT development in suckling piglets in terms of size and *** d 2 of life,sow-suckled piglets had access to a low fibre diet(CON),a diet with a fermentable long-chain arabinoxylan(lc-AXOS),a diet with a largely non-fermentable purified cellulose(CELL),or a diet containing both *** the initial 2 weeks,the control diet was a high-density milk replacer,followed by a dry and highly digestible creep *** weaning at 25 d,15 piglets from each treatment group,identified as eaters and originating from six or seven litters,were sacrificed for post-mortem examination of GIT morphology,small intestinal permeability and metabolic profile of the *** microbiota composition of the mid-colon was evaluated in a sub-set of ten ***:No major statistical interactions between the fibre sources were *** consumed the fibrecontaining milk supplements and creep diets *** size and small intestinal permeability was not *** intestinal fill was increased with lc-AXOS only,while relative large intestinal weight was increased with both fibre sources(P<0.050).Also,CELL decreased ileal pH and tended to increase ileal DM content compared to CON(P<0.050).Moreover,the concentration of volatile fatty acids was increased in the caecum(P<0.100)and midcolon(P<0.050)by addition of ***-AXOS only stimulated caecal propionate(P<0.050).The microbiota composition showed a high individual variation and limited dietary ***,CELL induced minor shifts in specific genera,with notable reductions of Escherichia-Sh

关键词： Dietary fibre Gut maturation Gut microbiota Suckling piglets

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

猪日粮中的非抗生素饲料添加剂(一)

引用

中国饲料 2018年第12期 86-92页

作者： Liu Y C.D.Espinosa j.j.Abelilla G.A.Casas L.V.Lagos S.A.Lee W.B.Kwon j.K.Mathai D.M.D.L.Navarro N.W.jaworski H.H.Stein 加州大学戴维斯分校动物科技学院伊利诺伊大学动物科技学院创荷美营养国际博克斯梅尔荷兰

非抗生素饲料添加剂有助于提高猪的免疫系统,并降低断奶和其他环境应激带来的负面影响。最常用的饲料添加剂包括酸化剂、锌铜、益生菌、直接饲喂微生物、酵母类产品、核苷酸和植物提取物。研究表明添加药理水平的锌铜、特定酸化剂和部... 详细信息

非抗生素饲料添加剂有助于提高猪的免疫系统,并降低断奶和其他环境应激带来的负面影响。最常用的饲料添加剂包括酸化剂、锌铜、益生菌、直接饲喂微生物、酵母类产品、核苷酸和植物提取物。研究表明添加药理水平的锌铜、特定酸化剂和部分植物提取物可以改善猪的性能或提高其免疫功能。使用益生菌、直接饲喂微生物、酵母类产品、核苷酸也有可能对猪的性能产生有利影响,但因研究结果缺乏一致性,因此仍需进一步研究。

关键词：非抗生素饲料添加剂猪酸化剂锌铜益生菌直接饲喂微生物

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

猪日粮中的非抗生素饲料添加剂(二)

引用

中国饲料 2018年第13期 87-92页

作者： Liu Y C.D.Espinosa j.j.Abelilla G.A.Casas L.V.Lagos S.A.Lee W.B.Kwon j.K.Mathai D.M.D.L.Navarro N.W.jaworski H.H.Stein 加州大学戴维斯分校动物科技学院伊利诺伊大学动物科技学院创荷美营养国际荷兰博克斯梅尔

关键词：非抗生素饲料添加剂猪酵母核苷酸植物提取物

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

Non-antibiotic feed additives in diets for pigs:A review

引用

Animal Nutrition 2018年第2期4卷 113-125页

作者： Yanhong Liu Charmaine D.Espinosa jerubella j.Abelilla Gloria A.Casas L.Vanessa Lagos Su A.Lee Woong B.Kwon john K.Mathai Diego M.D.L.Navarro Neil W.jaworski Hans H.Stein Department of Animal Science University of California Department of Animal Sciences University of Illinois Department of Animal Production College of Animal and Veterinary SciencesUniversity of Colombia trouw Nutrition

A number of feed additives are marketed to assist in boosting the pigs' immune system, regulate gut microbiota, and reduce negative impacts of weaning and other environmental *** most commonly used feed additives include acidifiers, zinc and copper, prebiotics, direct-fed microbials, yeast products, nucleotides, and plant *** of pharmacological levels of zinc and copper, certain acidifiers, and several plant extracts have been reported to result in improved pig performance or improved immune function of *** is also possible that use of prebiotics, direct-fed microbials, yeast,and nucleotides may have positive impacts on pig performance, but results have been less consistent and there is a need for more research in this area.

关键词： Acidifiers Direct-fed microbials Minerals Plant extracts Prebiotics Pigs

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

有机微量元素对奶牛体细胞数、产奶量和趾蹄健康的影响

引用

乳业科学与技术 2006年第5期28卷 252-252,249页

作者： H.H.VanHom j.K.Shearer C.j.Wilcox 孙安权 trouw Nutrition International

在靠近弗罗里达jacksonville附近的一所牧场里选择354头奶牛,于夏季实验。将奶牛分为4组,两组头胎牛,两组经产牛。试验目的在于研究蛋白质螯合Zn、Mn、Cu(选用奥普明ZMC产品,trouwNutritionUSA公司)对于奶牛产奶量、乳体细胞数、趾蹄健... 详细信息

在靠近弗罗里达jacksonville附近的一所牧场里选择354头奶牛,于夏季实验。将奶牛分为4组,两组头胎牛,两组经产牛。试验目的在于研究蛋白质螯合Zn、Mn、Cu(选用奥普明ZMC产品,trouwNutritionUSA公司)对于奶牛产奶量、乳体细胞数、趾蹄健康的影响。研究结果发现乳中体细胞数对照组奶牛超过10万/mL,而试验组的体细胞数则很低,二者差异极显著(P<0.01)。奥普明产品对产奶量的影响异不显著,部分数学模型表明奥普明ZMC对提高产奶量有效,但其它模型则未见效果。评测手段的原因导致不能做出对奶牛的趾蹄健康评分的影响。

关键词：奥普明矿物质螯合微量元素体细胞数肢蹄

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：