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Assessing the microbiota of recycled bedding sand on a Wisconsin dairy farm

journal of Animal Science and Biotechnology 2022年第2期13卷 601-612页

作者： Hannah E.Pilch andrew j.steinberger Donald C.Sockett Nicole Aulik Garret Suen Charles j.Czuprynski Department of Pathobiological Sciences School of Veterinary MedicineUniversity of Wisconsin-MadisonMadison 53706USA Department of Bacteriology University of Wisconsin-MadisonMadison 53706USA Microbiology Doctoral Training Program University of Wisconsin-MadisonMadison 53706USA Wisconsin Veterinary Diagnostic Laboratory School of Veterinary MedicineUniversity of Wisconsin-MadisonMadison 53706USA

Background:Sand is often considered the preferred bedding material for dairy cows as it is thought to have lower bacterial counts than organic bedding materials and cows bedded on sand experience fewer cases of lameness and *** can also be efficiently recycled and reused,making it ***,some studies have suggested that the residual organic material present in recycled sand can serve as a reservoir for commensal and pathogenic bacteria,although no studies have yet characterized the total bacterial community *** we sought to characterize the bacterial community composition of a Wisconsin dairy farm bedding sand recycling system and its dynamics across several stages of the recycling process during both summer and winter using 16S rRNA gene amplicon ***:Bacterial community compositions of the sand recycling system differed by both seasons and *** samples had higher richness and distinct community compositions,relative to winter *** both summer and winter samples,the diversity of recycled sand decreased with time drying in the recycling ***,summer sand 14 d post-recycling was enriched in operational taxonomic units(OTUs)belonging to the genera Acinetobacter and Pseudomonas,relative to freshly washed sand and sand from cow *** contrast,no OTUs were found to be enriched in winter *** sand recycling system contained an overall core microbiota of 141 OTUs representing 68.45%±10.33%SD of the total bacterial relative abundance at each sampled *** 4 most abundant genera in this core microbiota included Acinetobacter,Psychrobacter,Corynebacterium,and *** was present in greater abundance in summer samples,whereas Psychrobacter and Corynebacterium had higher relative abundances in winter *** had consistent relative abundances across both ***:These findings highlight the potential of recycled bedding sand as a bacterial reservo

关键词： Bovine Dairy farm Microbiota Recycled bedding sand 16S rRNA sequencing

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Seasonal Effect of Geomorphological Chronosequence Features on Soil Biota Dynamics

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Pedosphere 2010年第6期20卷 761-770页

作者： S.PEN-MOURATOV N.GENZER N.SHUKUROV j.PLAKHT Y.steinberger The Mina & Everard Goodman Faculty of Life Sciences Bar-Ilan University Institute of Geology and Geophysics Academy of Sciences Ramon Science Center Jacob Blaustein Institute for Desert ResearchBen-Gurion University of the Negev

Numerous studies have been devoted to the physical-chemical weathering processes leading to the creation of unique soil formations having their own history that induce soil-biotic ***,the extent to which unique geomorphic formations influence soil biotic seasonal variation is not *** aim was to define seasonal variations of soil biota in soils of different-aged terraces of the Makhtesh Ramon anticline erosional cirque in southern *** strong effect of Makhtesh Ramon (Ramon crater) erosional fluvial terrace age initiated by climatic changes during the Late Pleistocene- Early Holocene period on seasonal variations in both soil properties and the abundance and composition of soil biota were ***,age dependence was not constant and values for observed soil properties and microbial activity were negligible between younger and older terraces for certain seasons,while free-living nematodes along with bacterial-feeding group were strongly dependent on the geomorphic features of the ages throughout the study period.

关键词：土壤生物多样性地貌特征季节性动态特征生物群年限季节变化土壤性质

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物质的家族数

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世界科学 1992年第9期 1-5页

作者： Gary j.Feldman jack steinberger 何常

CERN和SLAC用正负电子对撞实验证明宇宙间的基本粒子只有三个家族,它们是怎样得到证明的?我们周围的宇宙由三种基本粒子组成,它们是"上"夸克,"下"夸克和电子。恒星,行星,分子,原子,甚至人类本身,都由这三种物质组合而成。它们与电子的... 详细信息

CERN和SLAC用正负电子对撞实验证明宇宙间的基本粒子只有三个家族,它们是怎样得到证明的?我们周围的宇宙由三种基本粒子组成,它们是"上"夸克,"下"夸克和电子。恒星,行星,分子,原子,甚至人类本身,都由这三种物质组合而成。它们与电子的中性的而且可能是没有质量的伙伴-电子中微子构成物质的第一个家族。

关键词：轻子介子费米子强子层子假设粒子夸克电子中微子家系家族质量(物理) 静止质量物质

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Novel materials for solid oxide fuel cells cathodes and oxygen separation membranes:Fundamentals of oxygen transport and performance

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Carbon Resources Conversion 2020年第1期3卷 112-121页

作者： Vladislav A.Sadykov Ekaterina M.Sadovskaya Nikita F.Eremeev Elena Yu.Pikalova Nina M.Bogdanovich Elena A.Filonova Tamara A.Krieger Yulia E.Fedorova Alexey V.Krasnov Pavel I.Skriabin Anton I.Lukashevich Robert steinberger-Wilckens Izaak C.Vinke Federal Research Center Boreskov Institute of Catalysis SB RAS 630090 NovosibirskRussia Novosibirsk State University 630090 NovosibirskRussia Institute of High Temperature Electrochemistry UB RAS 620137 YekaterinburgRussia Ural Federal University 620002 YekaterinburgRussia University of Birmingham EdgbastonBirmingham B152TTUK Forschungszentrum jülich GmbH 52425 JülichGermany

In the field of modern hydrogen energy,obtaining pure hydrogen and syngas and then being able to use them for green energy production are significant *** solid oxide fuel cells(SOFC)and catalytic membranes for oxygen separation as well as materials for these devices is one of the most likely ways to solve these *** this work,the authors’recent studies in this field are reviewed;the fundamentals of developing materials for SOFC cathodes and oxygen separation membranes’permselective layers based on research of their oxygen mobility and surface reactivity are ***-Popper phases Ln_(2-x)Ca_(x)NiO_(4+δ)(LnCNO)and perovskite-fluorite nanocomposites PrNi_(0.5)Co_(0.5)O_(3-δ)-Ce_(0.9)Y_(0.1)O_(2-δ)(PNC-YDC)were studied by isotope exchange of oxygen with C_(18)O_(2)and^(18)O_(2)in flow and closed *** LnCNO a high oxygen mobility was shown(D*~10^(-7)cm^(2)/s at 700℃),being provided by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial *** PNC-YDC dominated a wide fast diffusion channel via fluorite phase and interphases due to features of the redistribution of cations resulting in superior oxygen mobility(D*~10^(-8)cm^(2)/s at 700℃).After optimization of composition and nanodomain structure of these materials,as cathodes of SOFC they provided a high power density,while for asymmetric supported oxygen separation membranes-a high oxygen permeability.

关键词： Solid oxide fuel cells Oxygen separation membranes Oxygen mobility Perovskites Nanocomposites Ruddlesden-Popper phases

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地磁长期变化与全地幔对流过程可能的联系

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世界地震译丛 2013年第5期44卷 1-12页

作者： A.j.Biggin B.steinberger j.Aubert N.Suttie R.Holme T.H.Torsvik D.G..vanderMeer D.j.j.vanHinsbergen 郝永亮(译) 不详江苏省地震局

地球内部磁场的变化时间从数月到数十亿年不等。地磁场是由液态外地核对流产生的,从而受到从地核到地幔底部热流的影响。地磁场的变化在很大程度上被认为是随机的,但是它的长期变化可能与地幔对流过程中的热流变化有关。在过去的500Ma中... 详细信息

地球内部磁场的变化时间从数月到数十亿年不等。地磁场是由液态外地核对流产生的,从而受到从地核到地幔底部热流的影响。地磁场的变化在很大程度上被认为是随机的,但是它的长期变化可能与地幔对流过程中的热流变化有关。在过去的500Ma中,古地磁行为与地表过程的联系在始于约180Ma前的中生代中晚期尤为显著。地球发电机模拟表明,侏罗纪中期到白垩纪中期之间发生了磁极快速反转时期到持久稳定时期的转变,这或许是球对称的或者赤道方向的核幔边界热流的减少所触发的。该热流的减少可能与核幔边界处地幔柱顶冠活动的减弱有关,或者与真极移有关,亦或与二者同时有关。

关键词：地磁长期变化对流过程地幔地球发电机白垩纪中期核幔边界内部磁场地表过程

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海南地幔柱上地幔结构新的地震学约束

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世界地震译丛 2009年第2期40卷 15-39页

作者： j. S. Lei D. P. Zhao B. steinberger B. Wu F. L. Shen Z. X. Li 黎源李战勇（译）雷建设（校）吕春来（复校）不详中国地震局地壳应力研究所海南省地震局

给出了由近震和远震数据确定的海南地幔柱上地幔高分辨率层析成像结果。远震到时数据是由海南岛和雷州半岛9个固定地震台站记录的地震波形中精确提取的。我们的结果显示,在海南热点下方从地表到250km深度,地壳中存在高达-5%而在地幔仅-2... 详细信息

给出了由近震和远震数据确定的海南地幔柱上地幔高分辨率层析成像结果。远震到时数据是由海南岛和雷州半岛9个固定地震台站记录的地震波形中精确提取的。我们的结果显示,在海南热点下方从地表到250km深度,地壳中存在高达-5%而在地幔仅-2%的明显低速异常。海南地幔柱被成像为西北—东南向倾斜的、直径约80km的连续低速柱状异常体。由于较密集数据覆盖和精细模型参数化,我们的结果相对于先前的局部和全球层析成像研究有了明显的改进。海南地幔柱的这种倾斜可以用数值模拟的结果来解释。地幔柱在上地幔中的倾斜可能与海洋板块的俯冲有关,特别是与菲律宾海板块和欧亚板块的挤压有关。但最可能的是,这种倾斜是地幔柱在下地幔扭曲后靠浮力上浮至上地幔形成的。

关键词：地震层析成像上地幔海南地幔柱地幔柱倾斜

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从儿童期到青年期肥胖增加与左室质量增加之间的关系

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世界核心医学期刊文摘（心脏病学分册） 2006年第12期2卷 23-页

作者： Sivanandam S. Sinaiko A.R. jacobs jr. D.R. j. steinberger 雷聪 Department of Pediatrics University of Minnesota Medical School Minneapolis MN United States Dr.

This study evaluated the influence of adiposity on the progression of left ventricular(LV) mass from childhood to adulthood and the relation of LV mass to insulin resistance in young adulthood. One hundred thirty-two healthy children recruited into a longitudinal study at a mean age of 13 years and reevaluated at 27 years, at which time insulin resistance studies were also performed, were studied. Echocardiographic assessment of LV mass was made and indexed for height2.7. Body mass index(BMI) at 13 years was highly correlated with BMI at 27 years, as was LV mass index at 13 and 27 years. The cross-sectional correlation of LV mass index and BMI at 13 years(r=0.38, p< 0.0001) had strengthened considerably by 27 years(r=0.55, p< 0.0001). A BMI increase ≥5.5 kg/m2 from 13 to 27 years was associated with a significantly greater increase in the LV mass index(p< 0.0001) than a BMI change< 5.5 kg/m2, and this relation was similar in children who were thin and heavy at baseline. In young adulthood, the relation of LV mass index to lean mass was weaker than that of LV mass index to fat mass. The association of LV mass with insulin resistance was dependent on adiposity. In conclusion, adiposity and LV mass are related in childhood, and this association tracks and becomes stronger in young adulthood. Moreover, the increase in LV mass from childhood to young adulthood is related to the degree of increase in BMI, independent of BMI at 13 years, suggesting that an excessive increase in LV mass could be limited by controlling gain in body fat during adolescence.

关键词：青年期儿童期质量指数

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地磁场长期变化或与全地幔对流有关

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国际地震动态 2013年第1期34卷 9-9页

作者： Biggin A j.steinberger B Aubert j Suttie N Holme R Torsvik T H van der Meer D G van Hinsbergen D j j 王君兰(编译) 不详中国科学院国家科学图书馆兰州分馆中国科学院资源环境科学信息中心

2012年7月29日，《NatureGeosci-ence》在线发表了题为＂地磁场长期变化与全地幔对流过程之间的可能联系＂（Possiblelinksbetweenlong--termgeomagneticvaria--tionsandwhole-mantleconvectionproces-ses）的文章。以Biggin为首的国际研究小组在该文中指出，在数十至数百个百万年的时间尺度上，地磁场受地幔流体活动的影响，同时，频繁的地球磁场极性倒转也可能与地幔过程有关。

关键词：地幔对流长期变化地磁场对流过程时间尺度流体活动极性倒转地球磁场

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