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multiple origins of charnockite in the mesoproterozoic Natal belt,Kwazulu-Natal,South Africa

Geoscience Frontiers 2012年第6期3卷 755-771页

作者： G.h.Grantham P.mendonidis R.J.Thomas m.Satish-Kumar Central Regions Unit Council for GeoscienceP/Bag X112Pretoria 0127South Africa Vaal University of Technology Andries Potgieter BoulevardVanderbijlparkSouth Africa British Geological Survey KeyworthNottingham NG12 5EQ.UK Institute of Geosciences Faculty of Science.Shizuoka University836 OyaSuruga-kuShizuoka 422-8529Japan

Four different varieties of charnockitic rocks, with different modes of formation, from the mesoproterozoic Natal belt are described and new C isotope data presented. Excellent coastal exposures in a number of quarries and river sections make this part of the Natal belt a good location for observing charnockitic field relationships. Whereas there has been much debate on genesis of charnockites and the use of the term charnockite, it is generally recognized that the stabilization of orthopyroxene relative to biotite in granitoid rocks is a function of low ah2O （-- high CO2）, high temperature, and composition （especially Fe/（Fe ＋mg））. From the Natal belt exposures, it is evident that syn-emplacement, magmatic crystallization of charnockite can arise from mantle-derived differentiated melts that are inherently hot and dry （as in the Oribi Gorge granites and munster enderbite）, as well as from wet granitic melts that have been affected through interaction with dry country rock to produce localized charnockitic marginal facies in plutons （as in the Portobello Granite）. Two varieties of post-emplacement sub-solidus charnock- ites are also evident. These include charnockitic aureoles developed in leucocratic, biotite, garnet granite adjacent to cross-cutting enderbitic veins that are attributed to metamorphic-metasomatic processes （as in the Nicholson＇s Point granite, a part of the margate Granite Suite）, as well as nebulous, patchy charnocki- tic veins in the margate Granite that are attributed to anatectic metamorphic processes under low-ah2O fluid conditions during a metamorphic event. These varieties of charnockite show that the required physical conditions of their genesis can be achieved through a number of geological processes, providing some important implications for the classification of charnockites, and for the interpretation of charnock- ite genesis in areas where poor exposure obscures field relationships.

关键词： Charnockite igneous metamorphic Natal belt Dehydration CO2

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

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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(Palso,CELL decreased ileal ph and tended to increase ileal Dm content compared to CON(Pmoreover,the concentration of volatile fatty acids was increased in the caecum(Pmidcolon(Pmulated caecal propionate(Phe 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

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Geology and geochemical evaluation of Taftan Volcano, Sistan and Baluchestan Province, southeast of Iran

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Chinese Journal Of Geochemistry 2008年第4期27卷 356-369页

作者： Biabangard h. moradian A. Department of Geology Shahid Bahonar University of Kerman Iran

在它的 stratighraphy 的一瞥， Taftan 火山能作为三个组被分类：pre- ， syn -- 并且 volcanic 以后沉积物。pre 暴烈的存款主要由复理层外形和有颜色的 m é lange 建筑群组成。syn 暴烈的存款主要是主要从这座火山的主要身体由碎屑... 详细信息

在它的 stratighraphy 的一瞥， Taftan 火山能作为三个组被分类：pre- ， syn -- 并且 volcanic 以后沉积物。pre 暴烈的存款主要由复理层外形和有颜色的 m é lange 建筑群组成。syn 暴烈的存款主要是主要从这座火山的主要身体由碎屑状的焦性没食子酸和熔岩流组成的 Taftan 火山的产品。volcanic 以后存款主要是从 Taftan 火山的 epiclastic 和重做的材料由于它的侵蚀并且捱过。专业和痕量元素，和从 Taftan 火山在整个岩石的样品上决定的 Sr/Rb 同位素组成证明火山在大陆人边缘被形成。Taftan 火山的整个岩石的同位素组成与 87Sr/86 Sr=0.705326 0.705921。Taftan 火山的 Geochronological 样品由 40K/40 Ar 方法把 6.95 ± 0 .72 的一个年龄范围给了 0.71 ± 0 .03 妈。稀土元素的元素模式被高 LREE 和将近强烈线性的模式为 mREE 描绘到 hREE，建议象橄榄石和辉石那样的特殊矿物质在早 magmatic 阶段结晶然后涉及在下地壳和残余岩浆之间的反应。在 Taftan 火山下面的综合同位素和痕量元素分类学和构造结构由主要岩浆建议了降低外壳的吸收。主要岩浆从异构的披风来源和一个第二等的 petrogenetical 过程产生了。这岩浆能被阿曼海的俯冲在大陆人欧亚大陆板下面影响了。

关键词：地球化学地质火山年代学同化作用

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早期胃癌淋巴结转移开始于黏膜层浸润

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消化肿瘤杂志(电子版) 2010年第1期 34-34页

作者： hlscher ah Drebber U mnig SP 张信华

目的本研究旨在评估早期胃癌浸润黏膜层、黏膜下层不同深度时的淋巴结转移情况。研究背景目前部分内镜学家将内镜下黏膜切除的适应征扩大到黏膜下层癌。然而,对于早期胃癌行内镜下黏膜切除还是胃切除加淋巴结清扫,关键

关键词：淋巴结淋巴组织早期胃癌内镜下黏膜切除

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补充蛋氨酸锌对荷斯坦奶牛乳中体细胞数和乳房炎的影响

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饲料与畜牧（新饲料） 2014年第5期 52-55页

作者： Gaafar h.m.A. m.I.Basiuoni m.F.E.ali A.A.shitta A.sh.E.shamas 吉隆达集团技术中心吉隆达集团技术中心

该研究选取240头不同泌乳阶段、1～8胎次的荷斯坦奶牛，探讨影响牛奶中体细胞数以及产奶量和乳成分的某些因素。同时，12头健康奶牛、15头亚临床乳房炎奶牛以及15头临床乳房炎奶牛分别分为3组，第1组不添加蛋氨酸锌，第2、5组分别添加... 详细信息

该研究选取240头不同泌乳阶段、1～8胎次的荷斯坦奶牛，探讨影响牛奶中体细胞数以及产奶量和乳成分的某些因素。同时，12头健康奶牛、15头亚临床乳房炎奶牛以及15头临床乳房炎奶牛分别分为3组，第1组不添加蛋氨酸锌，第2、5组分别添加蛋氨酸锌5g／d·头和10g／d·头。亚临床和临床性乳房炎奶牛乳房内注射抗生素（100mg），直到完全康复。研究结果显示，冬季乳中体细胞数最高（P〈0．05），接着是夏季，最低的是秋季。体细胞数的变化是随着泌乳开始产奶量上升到高峰期的过程中呈现下降趋势，之后显著升高（P〈0．05），并且随着泌乳期的增加也在升高。正常奶牛、亚临床乳房炎奶牛和临床乳房炎奶牛的比例分别为77．71％、15．82％以及6．46％。产奶量和乳成分以及产奶收入都随着体细胞数的增加而显著降低（P〈0．05）。补充蛋氨酸锌导致乳中体细胞数显著下降（P〈0．05）。亚临床和临床乳房炎补充蛋氨酸锌显著降低了乳中体细胞数、导电性、康复时间以及与未添加组奶牛相比消耗的费用（P〈0．05）。

关键词：荷斯坦奶牛蛋氨酸锌体细胞数乳房炎

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Genome-wide antagonism between 5-hydroxymethylcytosine and DNA methylation in the adult mouse brain

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Frontiers in Biology 2014年第1期9卷 66-74页

作者： Junjie U. GUO Keith E. SZULWACh Yijing SU Yujing LI Bing YAO Zihui XU Joo heon sh1N Bing XIE Yuan GAO Guo-li mING Peng JIN hongjun SONG Institute for Cell Engineering Johns Hopkins University School of Medicine Baltimore MD 21205 USA The Solomon h. Snyder Department of Neuroscience Johns Hopkins University School of Medicine Baltimore MD 21205 USA Department of Neurology Johns Hopkins University School of Medicine Baltimore MD 21205 USA. Department of human Genetics Emory University School of Medicine 615 Michael Street Atlanta GA 30322 USA Lieber Institute for Brain Development Johns Hopkins University School of Medicine Baltimore MD 21205 USA

mounting evidence points to critical roles for DNA modifications, including 5-methylcytosine （5mC） and its oxidized forms, in the development, plasticity and disorders of the mammalian nervous system. The novel DNA base 5- hydroxymethylcytosine （5hmC） is known to be capable of initiating passive or active DNA demethylation, but whether and how extensively 5hmC functions in shaping the post-mitotic neuronal DNA methylome is unclear. here we report the genome-wide distribution of 5hmC in dentate granule neurons from adult mouse hippocampus in vivo. 5hmC in the neuronal genome is highly enriched in gene bodies, especially in exons, and correlates with gene expression. Direct genome-wide comparison of 5hmC distribution between embryonic stem cells and neurons reveals extensive differences, reflecting the functional disparity between these two cell types. Importantly, integrative analysis of 5hmC, overall DNA methylation and gene expression profiles of dentate granule neurons in vivo reveals the genome-wide antagonism between these two states of cytosine modifications, supporting a role for 5hmC in shaping the neuronal DNA methylome by promoting active DNA demethylation.

关键词： dentate granule neuron active DNA demethylation TET methylome

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The 16th Workshop on Antarctic meteorology and Climate and 6th Year of Polar Prediction in the Southern hemisphere meeting

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Advances in Atmospheric Sciences 2022年第3期39卷 536-542页

作者： David h.BROmWICh matthew A.LAZZARA Arthur m.CAYETTE Jordan G.POWERS Kirstin WERNER John J.CASSANO Steven R.COLWELL Scott CARPENTIER Xun ZOU Byrd Polar and Climate Research Center The Ohio State UniversityColumbusOhio 43210USA Antarctic meteorological Research Center Space Science and Engineering CenterUniversity of Wisconsin-MadisonMadisonWisconsin 53704USA Department of Physical Sciences Madison Area Technical CollegeMadisonWisconsin 53706 USA Naval Information Warfare Center CharlestonSouth Carolina 29406USA National Center for Atmospheric Research BoulderColorado 53706USA Year of Polar Prediction(YOPP)International Coordination Office Alfred Wegener InstituteHelmholtz Centre for Polar and Marine ResearchBremerhaven 27570Germany National Snow and Ice Data Center Cooperative Institute for Research in Environmental Sciences and Department of Atmospheric and Oceanic SciencesUniversity of ColoradoBoulderColorado 80309USA British Antarctic Survey Cambridge CB30ETUnited Kingdom Bureau of meteorology Hobart 7001Australia

1. Overview In June 2021, the 16th Workshop on Antarctic meteorology and Climate (WAmC) and the 6th Year of Polar Prediction in the Southern hemisphere (YOPP-sh) meeting (http://***/WAmC;021/) were held online and hosted by the Polar meteorology Group at Byrd Polar and Climate Research Center, The Ohio State University, Columbus,Ohio (Fig. 1).

关键词： Antarctic hemisphere Climate

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The 13th and 14th Workshops on Antarctic meteorology and Climate

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Advances in Atmospheric Sciences 2020年第5期37卷 423-430页

作者： matthew A.LAZZARA Sophie A.ORENDORF Taylor P.NORTON Jordan G.POWERS David h.BROmWICh Scott CARPENTIER John J.CASSANO Steven R.COLWELL Arthur m.CAYETTE Kirstin WERNER Antarctic meteorological Research Center Space Science and Engineering CenterUniversity of Wisconsin-MadisonMadisonWI 53706USA Department of Physical Sciences School of Arts and SciencesMadison Area Technical CollegeMadison WI 53704USA Department of Atmospheric Sciences University of Wisconsin-MadisonMadisonWI 53706USA National Center for Atmospheric Research Boulder CO 53706USA Polar meteorology Group Byrd Polar&Climate Research CenterThe Ohio State UniversityColumbus OH 43210USA Bureau of meteorology HobartTasmania 7001Australia Cooperative Institute for Research in Environmental Sciences and Department of Atmospheric and Oceanic Sciences University of ColoradoBoulderCO 80309USA British Antarctic Survey Cambridge CB30ETUnited Kingdom Naval Information Warfare Center CharlestonSC 29406USA Year of Polar Prediction(YOPP)International Coordination Office Alfred Wegener InstituteHelmholtz Centre for Polar and Marine ResearchBremerhaven 27570Germany

*** In July 2018,the Antarctic community came together to meet at the 13th Workshop on Antarctic meteorology and Climate(WAmC)in madison,Wisconsin,USA(Fig.1);and in the following year in June 2019,the 14th WAmC was held in Charleston,South Carolina,USA(Fig.2).With a growing history,the WAmC addresses the topics of Antarctic meteorology and climate(Kameda et al.,2008;Colwell et al.,2016;Lazzara et al.,2018)as well as weather-related issues of scientific and operational *** workshops bring together researchers,operational forecasters,numerical modelers,observational specialists,and *** themes of both workshops included Antarctic meteorological observations,Antarctic atmospheric numerical modeling,Antarctic meteorological and climate research,and Antarctic weather forecasting and operational *** 2018 and 2019 WAmC were both followed by a one-day focus on the Year of Polar Prediction-Southern hemisphere(YOPP-sh),when preparations and follow-up discussions were made with regard to the YOPP Special Observing Period from 16 November 2018 to 15 February 2019.

关键词： Antarctic weather meteorological

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屯田迁徙之塔兰奇人语言文化变迁论略

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新疆职业大学学报 2017年第4期25卷 51-55页

作者：覃莎莎伊犁师范学院中国语言分院新疆伊宁835000

在前人研究基础上对比分析了塔兰奇人迁徙前后的语言文化样态,讨论了迁徙后的生活方式等对塔兰奇人语言文化的影响,获得塔兰奇人语言文化变迁的多元性、融合性、适应性及涉外性等特征认知,形成对伊犁维吾尔人——塔兰奇人语言文化多元... 详细信息

在前人研究基础上对比分析了塔兰奇人迁徙前后的语言文化样态,讨论了迁徙后的生活方式等对塔兰奇人语言文化的影响,获得塔兰奇人语言文化变迁的多元性、融合性、适应性及涉外性等特征认知,形成对伊犁维吾尔人——塔兰奇人语言文化多元内涵的多视角了解。屯田迁徙是促进伊犁维吾尔人语言文化嬗变的主要因素,民族进步发展是构筑国家统一稳定大局的基础之一,且具有一定的现实意义。

关键词：维吾尔人屯田迁徙塔兰奇语言文化嬗变

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Removal of Nitrogen Dioxide and Sulfur Dioxide from Air Streams by Absorption in Urea Solution

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Journal of Environmental Protection 2011年第2期2卷 175-185页

作者： mahmood m. Barbooti Neran K. Ibraheem Awni h. Ankosh 不详

The study focuses on the absorption rates of NO2, SO2 and a mixture of these two acid gases into urea solution in packed bed column. The absorption rate was studied as a function of absorbent temperature, urea concentration and acid gas concentration. The influence of liquid temperature between 10 - 40?C, urea concentration between 0.1 - 0.5 m and acid gas concentration NO2 between 100 - 1000 ppm (191 - 1910 mg/m3), SO2 between 500 - 2500 ppm (1310 - 6530 mg/m3) were investigated. The mass gas flow rate of 20.646 (kg/***) at 25?C and the absorption rate were determined by measuring the NO2 and SO2 concentrations in the inlet and outlet streams of the absorptioncolumn. The absorption rate of SO2 increases with the decrease of temperature of absorbent (urea solution) and with the increase of the urea concentration. The presence of NO2 in the effluent gas stream lowers the absorption rate of SO2 in urea solution due to the fast reaction of NO2 with urea as compared with SO2. The absorption rate of NO2 decreases as the urea concentration exceeds 0.4 mol/l and for NO2 gas concentration of 100 ppm due to the decrease the diffusivity of the gas. The experimental data were analyzed using dimensionless analysis to find the correlation of mass transfer coefficient in the packed column sh (h / dp)1.2 = 4.19*10–2 *(G' dp / μg)0.87 (μg / ρg DAB)0.60 The results confirmed the hypothesis that the absorption is accompanied with chemical reaction. also it is found the increasing the temperature of absorbent solution the absorption rate of two gases is decreases. The mass transfer coefficient models are in good agreements with the Kramer’s equation.

关键词： Sulfur Dioxide Removal Nitrogen Dioxide Removal Column Absorption Removal of Acid Gases Air Pollution Prevention

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