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A Comparison of Citation Disciplinary Structure in Science between the G7 Countries and the BRICS Countries

Journal of Data and Information Science 2018年第3期3卷 14-31页

作者： Ting Yue Liying Yang Per Ahlgren Jielan Ding Shuangqing Shi rainer Frietsch National Science Library of the Chinese Academy of Sciences Beijing100190China University of Chinese Academy of Sciences No.19A Yuquan RoadBeijing 100049China KTH Library KTH Royal Institute of TechnologyOsquars backe 25Stockholm10044Sweden Library of Peking University Health Science Center Beijing100083China Fraunllofer Institute for Sysiems and Innovation Research ISI KarlsruheGermany

Purpose： This study aims to compare the characteristics of citation disciplinary structure between the G7 countries and the BRICS ***/Methodology/Approach： In this contribution, which uses about 1 million Web of Science publications and two publications years（1993 and 2013）, we compare the G7 countries and the BRICS countries with regard to this type of structure. For the publication year 2013, cosine similarity values regarding the citation disciplinary structures of these countries（and of nine other countries） were used as input to cluster analysis. We also obtained cosine similarity values for a given country and its citation disciplinary structures across the two publication years. Moreover, for the publication year 2013, the within-country JeffreysMatusita distance between publication and citation disciplinary structure was measured. Research limitations： First, the citation disciplinary structures of countries depend on multiple and complex factors. It is therefore difficult to completely explain the formation and change of the citation disciplinary structure of a country. This study suggests some possible causes, whereas detailed explanations might be given by future research. Second, the length of the citation window used in this study is three years. However, scientific disciplines differ in their citation practices. Comparison between citations across disciplines using the same citation window length may affect the citation discipline structure results for some *** limitations： First, the results of this study are based on the WoS database. However, in this database some fields are covered to a greater extent than others, which may affect the results for the citation discipline structure for some studied countries. In future research, we might repeat this study using another database（like Scopus） and, in that case, we would like to make comparisons between the two outcomes. Second, the use of a constant journal setyielded that

关键词： Citation disciplinary structure Country Bibliometrics

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Composition of forests and vegetation in the Kailash Sacred Landscape,Nepal

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Journal of Forestry Research 2020年第5期31卷 1625-1635页

作者： Ripu Mardhan Kunwar Maria Fadiman Tobin Hindle Madan Krishna Suwal Yagya Prasad Adhikari Kedar Baral rainer Bussmann Department of Geosciences Florida Atlantic University777 Glades RoadBoca RatonFL 33431USA Department of Geography University of BergenFosswinckelsgate 6P.O.Box 78025020 BergenNorway Department of Biogeography University of BayreuthUniversitatsstr.3095447 BayreuthGermany Department of Forests Kathmandu 44600Nepal Ilia State University Kakutsa Cholokashvili Ave 3/50162 TbilisiRepublic of Georgia

A total of 141 quadrats were sampled using stratified random sampling to study forest,environment and human interactions along an elevation gradient 1800 to 3665 m at the remote Kailash Sacred Landscape,*** forest types were identified,including Laurel-Oak to Rhododendron to Blue pine,comprising 191 species including 60 useful from 166 genera and 87 *** environmental variables elevation,slope,and temperature were significant(p<0.001)in determining the composition and distribution of forest *** of large numbers of useful plants along with diverse forest and vegetation types suggest a strong association between the culture of local villages and nature *** to changes in climate,socio-culture and land-use,forest degradation is expected to accelerate,thus forcing government and indigenous community forest management measures to acknowledge human,cultural and environmental variables for sustainable forest management.

关键词： Phyto-sociological assessment Environmental factors Forest types Culture Kailash Sacred Landscape Nepal

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

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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

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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

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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

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Drawing Kerr

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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

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

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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

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Collapsing Schwarzschild Interior Solution

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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

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Subluminal Cosmology

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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

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Karl Blossfeldt, 1865 - 1932

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作者： Adam Hans Christian. Metzger rainer.

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

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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

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