检索结果-南通市图书馆

Determination of basal ileal endogenous losses and standardized ileal digestibility of amino acids in barley fed to growing pigs

引用

Journal of Animal Science and Biotechnology 2017年第1期8卷 134-142页

作者： Hanna Katharina Spindler rainer Mosenthin Pia Rosenfelder Henry J?rgensen Knud Erik Bach Knudsen Meike Eklund University of Hohenheim Institute of Animal Science Aarhus University Department of Animal ScienceResearch Center Foulum

Background： Basal ileal endogenous amino acid（AA） losses（IAAend） and standardized ileal digestibility（SID） values of cereal grains, such as barley, are apparently underestimated when determined according to the nitrogen（N）-free method. Regression analysis between the dietary apparent ileal digestible content（c AID） and total crude protein（CP） and AA can be considered as alternative approach to obtain more accurate values for IAAendand SID of AA in cereal ***： Eight hulled barley genotypes were used, with barley being the only source of CP and AA in the assay diets. The diets contained 95 % as-fed of these eight barley genotypes each, ranging in CP content between 109.1 and 123.8 g/kg dry matter（DM）. Nine ileally T-cannulated barrows, average body weight（BW） 30 ± 2 kg, were allotted to a row-column design comprising eight periods with 6 d each and nine pigs. On d 5 and the night of d 6 of every period, ileal digesta were collected for a total of 12 h. The IAAend and the SID were determined by linear regression analysis between c AID and total dietary CP and ***： There exist linear relationships between cA ID and total CP and AA（P 〈 0.001）. The IAAend of CP, Lys, Met, Thr and Trp amounted to 35.34, 1.08, 0.25, 1.02 and 0.38 g/kg DM intake（DMI）, respectively, which are greater compared to average IAAend determined previously under N-free feeding conditions. The SID of CP, Lys, Met, Thr and Trp was 90,79, 85, 79 and 86 %, respectively, and was greater when compared to tabulated values. Moreover, these SID values were greater than those reported in literature, based on correction of apparent ileal digestibility（AID） of CP and AA for their IAAendvalues. Summarized, the results of the present regression analysis indicate greater IAAendin barley-based diets compared to those obtained by N-free ***： For low-protein feed ingredients like barley the regression method may be preferred over correction of AID values for their IAAenddetermined und

关键词： Amino acid Barley Basal ileal endogenous loss Growing pigs Regression analysis Standardized ileal digestibility

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

Role of Magmatism and Related-Exsolved Fluids during Ta-Nb-Sn Concentration in the Central Eastern Desert of Egypt:Evidences from Mineral Chemistry and Fluid Inclusions

引用

Journal of Earth Science 2023年第3期34卷 674-689页

作者： Mohamed Abd El Monsef Mabrouk Sami Fatma Toksoy‐Köksal rainer Abart Martin Ondrejka Khaled MAbdelfadil Geology Department Faculty of ScienceTanta University31527 TantaEgypt Geology Department Faculty of ScienceMinia University61519 El-MiniaEgypt Department of Geological Engineering Middle East Technical University06800 AnkaraTurkey Department of Lithospheric Research University of Vienna1090 ViennaAustria Department of Mineralogy Petrology and Economic GeologyComenius UniversityBratislavaSlovakia Department of Geology Faculty of ScienceSohag University82524 SohagEgypt Department of Physics and Earth Sciences Jacobs University28759 BremenGermany

The rare metals of Abu Dabbab area in the Central Eastern Desert of Egypt have been investigated for their mineralogy and conditions of precipitation using combination of EMPA and fluid inclusions studies,in order to delineate the source,mechanism of formation and evolutionary model for these economic ***(Ta-Nb-Sn)-bearing minerals at the Abu Dabbab area include columbite group minerals(CGMs),wodginite and *** both granitic intrusion and its enclosed quartz veins,most of zoned CGMs and cassiterite grains are commonly characterized by a well-developed twostage ***,columbite-(Mn)(CGM-Ⅰ)represents the early formed phase of CGMs that is characterized by high Mn#values(0.64-0.92)with quite low Ta#values(0.13-0.49).It was invaded by Ta-rich phases including tantalite-(Mn)(CGM-Ⅱ;Ta#=0.13-0.49)and wodginite,which contain high Ta_(2)O_(5)and SnO_(2)(17.91 wt.%).In regard to cassiterite,there are distinct compositional differences between the early-phase cassiterite(Cst-Ⅰ)and the late-phase one(Cst-Ⅱ),where the latter is enriched in Ta_(2)O_(5),Nb_(2)O_(5)and *** chemistry and textural criteria of the early stage CGM-Ⅰand Cst-Ⅰ,all are indicative of magmatic ***,the latter CGM-Ⅱ,wodginite and Cst-Ⅱwere influenced by the late magmatic Ta-rich *** inclusions microthermometry shows criteria of phase separation represented by both boiling and fluid *** initial fluid was supposed to be of magmatic origin(magmatic CH4),that was consequently influenced by fluid mixing/dilution with post-hydrothermal/meteoric water with respect to the decompression process during *** construction gave rise to an estimate P-T conditions(T=330-370℃,P=22-50 MPa).The fluid inclusions’microthermometry supports a transition between magmatic and late to post-hydrothermal activities in addition to surface-derived fluid(meteoric fluid?)in a part as main source for the polymetallic deposits.

关键词： columbite-group minerals wodginite cassiterite magmatic-hydrothermal fluid inclusion deposits Abu Dabbab

来源：

维普期刊数据库

同方期刊数据库

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

Drawing Kerr

引用

Journal of Modern Physics 2019年第5期10卷 515-538页

作者： rainer Burghardt A-2061 Obritz 246 Obritz Austria

The Kerr metric is analyzed using strictly geometrical elements. A 4-dimensional surface representing the geometry of the Kerr model is embedded into a 5-dimensional flat space. The field strengths of the model are explicitly worked out and understanding of the theory is supported by numerous figures. The structure of the field equations is analyzed.

关键词： Kerr Geometry Geometrical Interpretation Kerr Surface

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

Melia’s R<sub>h</sub>= ct Model Is by No Means Flat

引用

Journal of Modern Physics 2020年第5期11卷 703-711页

作者： rainer Burghardt A-2061 Obritz 246 Obritz Austria

With the support of numerous arguments, it has been shown that Melia’s claim that his cosmological Rh = ct model is flat and infinite is erroneous. In contrast, the model is positively curved, closed and, therefore, ... 详细信息

关键词： Globally and Locally Flat Cosmos Melia’s Rh = ct Model Subluminal Model Curvature Parameter

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

Collapsing Schwarzschild Interior Solution

引用

Journal of Modern Physics 2015年第13期6卷 1895-1907页

作者： rainer Burghardt A-2061 Obritz 246 Austria

We extend the static interior Schwarzschild solution to a collapsing model by applying geometrical methods. We examine the field quantities and field equations in the comoving and non-comoving observer systems. The collapsing stellar object contracts asymptotically to its minimum extent and needs an infinitely long time to arrive at the final state. The event horizon of the exterior Schwarzschild solution is not reached or even crossed. A geometric model of ECOs (eternally collapsing objects) is presented.

关键词： Collapse Interior Schwarzschild Solution Interior Horizon Comoving and Non-Comoving Reference Systems

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

Subluminal Cosmology

引用

Journal of Modern Physics 2017年第4期8卷 583-601页

作者： rainer Burghardt Independent Researcher Obritz Austria

The standard model of cosmology is considered critically. A model with pressure is proposed which is linearly expanding and which is an exact solution of Einstein’s field equations. The recession velocity of the galaxies of this model never exceeds the speed of light. The model is closely related to the Rh=ct model of Melia, which is flat and infinite. However, our subluminal model is spatially positively curved and closed. Nevertheless all data from observations gathered and surveyed by Melia support our model.

关键词： Expanding Cosmos with Pressure Subluminal Expansion Covariant Representation

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

Karl Blossfeldt, 1865 - 1932

引用

作者： Adam Hans Christian. Metzger rainer.

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Incidents with Dioxins and PCBs in Food and Feed-Investigative Work, Risk Management and Economic Consequences

引用

Journal of Environmental Protection 2017年第6期8卷 744-785页

作者： rainer Malisch European Union Reference Laboratory (EU-RL) for Dioxins and PCBs in Feed and Food Chemisches und Veterin&auml runtersuchungsamt Freiburg (CVUA State Institute for Chemical and Veterinary Analysis of Food) Freiburg Germany

The identification of contamination sources within the food chain with polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs), (“dioxins”), and PCBs is difficult and complex. PCDD/PCDF can be formed as unintentional compounds in a number of chemical processes as well as in almost every combustion process. PCBs were intentionally produced chemicals that were manufactured for decades before the ban in marketing and use in many countries around 1985. The pattern of occurrence can change from the original source in particular via feedingstuffs to food of animal origin as result of bioaccumulation. A number of examples illustrate the challenging detective work and key scientific aspects for identification of the sources, for support of the risk management and for performance of monitoring programs. The contamination of milk and milk products in European countries with dioxins was caused by compound feeds containing citrus pulp pellets from Brazil which had high dioxin levels as a result of the use of heavily contaminated lime used for neutralization. The Belgian dioxin crisis was caused by a feed additive heavily contaminated with PCBs which were discharged into a recycled fat used in the production of animal feed. Guar gum from India was contaminated with sodium pentachlorophenate and dioxins. Clay was found to be possibly highly contaminated with dioxins possibly formed by geothermal processes over time;use of such clay as feed additive or for human intake led to elevated dioxin levels in food and humans. Bioanalytical screening in combination with comprehensive physicochemical investigations led to the detection of brominated flame retardants and brominated dioxins in a feed additive. Buffalo milk was contaminated in Italy presumably caused by illegal deposition of waste. High PCB levels in fuel oil for drying of breadcrumb used as a feed ingredient caused a major dioxin crisis with pork meat in Ireland. Fatty acids for technical purposes

关键词： PCDDs PCDFs PCBs Feed Food Detective Work Congener Patterns Contamination Incidents Clay Geophagy Biomonitoring Bromodioxins EU Legislation Maximum Levels Action Levels

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

Nutrient uptake,maximum yield production,and economic return of maize under deficit irrigation with biochar and inorganic fertiliser amendments

引用

Biochar 2019年第4期1卷 375-388页

作者： Oluwaseun Temitope Faloye Ayodele Ebenezer Ajayi Michael Olarewaju Alatise Babatunde Sunday Ewulo rainer Horn Department of Agricultural and Environmental Engineering Federal University of TechnologyAkureNigeria Department of Agricultural and Food Engineering Afe Babalola UniversityAdo EkitiNigeria Department of Crop Soil and Pest ManagementFederal University of TechnologyAkureNigeria Institute for Plant Nutrition and Soil Science CAU KielHermann Rodewaldstr.224118 KielGermany

The individual and combined effects of biochar(B)and inorganic fertiliser(F)have all been widely proofed to improve soil fertility and enhance crop growth and yield under irrigation(I)and rain fed ***,the strength of their individual and combined effects on crop productivity has been scarcely *** addition,few studies have assessed their individual and co-application effects on economic ***,a 2-year field experiment which consisted of factorial combination of irrigation(I)[100%full irrigation(FI),80%FI and 60%FI],biochar(0 and 20 t/ha)and fertiliser(0 and 300 kg/ha)was *** to the results,irrigation was the dominant factor that influences maize grain yield,followed by inorganic fertiliser and biochar,and they were all significant in their main *** strength of interaction effects among,I,F and B on maize grain yield follow the sequence F×I>B×F>B×*** economic analysis showed that the ternary combination of B,F and I was more economical than the binary combination of B plus I,and F plus I(in that order),when compared with the standalone application of I at maximum production in the field *** addition,combined applications of biochar and fertiliser improved soil nutrients,nutrient uptake in all irrigation treatments,compared to the standalone applications of biochar or *** research is,therefore,recommended for long-term evaluation of the economic viability of integrating biochar with fertiliser under irrigation.

关键词： Biochar amendment Drip irrigation Maize grain yield Economic evaluation Optimum irrigation

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

Linking Conditions for Models with Geometrical Basis

引用

Journal of Modern Physics 2020年第3期11卷 355-364页

作者： rainer Burghardt A-2061 Obritz 246 Obritz Austria

Usually it is demanded that the metric and its 1st derivatives have to match at the boundary of two adjacent regions which are solutions to Einstein’s field equation. We propose a new linking condition concerning gravitational models based on surfaces which could be embedded into a higher dimensional flat space. We probe this condition for the Schwarzschild interior and exterior solution.

关键词： Linking Conditions Short Discussions of Previous Papers Schwarzschild Models Flamm’ Paraboloid

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

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

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

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：