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133篇 您的检索式:作者名="NINA S"
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1Does intra-ruminal nitrogen recycling waste valuable resources? A review of major players and their manipulation显示文摘Nitrogenous emissions from ruminant livestock production are of increasing public concern and, together with methane, contribute to environmental pollution. The main cause of nitrogen-(N)-containing emissions is the inadequate provision of N to ruminants, leading to an excess of ammonia in the rumen, which is subsequently excreted. Depending on the size and molecular structure, various bacterial, protozoal and fungal species are involved in the ruminal breakdown of nitrogenous compounds(NC). Decelerating ruminal NC degradation by controlling the abundance and activity of proteolytic and deaminating microorganisms, but without reducing cellulolytic processes, is a promising strategy to decrease N emissions along with increasing N utilization by ruminants. Different dietary options, including among others the treatment of feedstuffs with heat or the application of diverse feed additives, as well as vaccination against rumen microorganisms or their enzymes have been evaluated. Thereby, reduced productions of microbial metabolites, e.g. ammonia, and increased microbial N flows give evidence for an improved N retention. However, linkage between these findings and alterations in the rumen microbiota composition, particularly NC-degrading microbes, remains sparse and contradictory findings confound the exact evaluation of these manipulating strategies, thus emphasizing the need for comprehensive research. The demand for increased sustainability in ruminant livestock production requests to apply attention to microbial N utilization efficiency and this will require a better understanding of underlying metabolic processes as well as composition and interactions of ruminal NC-degrading microorganisms.Thomas Hartinger Nina Gresner Karl-Heinz Südekum 2018Journal of Animal Science and Biotechnology2018,9,3:5
2苏鲁造山带中部晚中生代裂谷作用与深部动力机制——来自灵山岛的记录显示文摘灵山岛科学钻探井的最新成果表明,晚中生代苏鲁造山带内部发育莱阳、青山两期裂谷作用.通过野外踏勘、科学钻探、岩芯描述、锆石年代学与全岩地球化学的研究,探明了裂谷发育时代,揭露了裂谷充填序列,并探讨了其演化动力学机制.灵山岛地区莱阳-青山群地层序列呈现两期不同性质的裂谷充填序列:莱阳群(147~125Ma),主要由深水重力流沉积与少部分火成岩夹层组成;青山群下部(125~119Ma),不整合覆盖于下伏地层之上,主要由陆上火山岩与浅水陆相沉积地层组成.两期裂谷演化过程中构造环境发生了重要转变:裂谷莱阳期处于NNW-SSE向伸展拉张的构造环境,呈现出“先伸展开裂,后岩浆作用”的被动裂谷特征,在125Ma左右经历了一个短暂的NWW-SEE向挤压,结束了被动裂谷阶段,之后转变为NW-SE向强烈伸展环境,演化为青山期火山弧盆.裂谷火成岩多为钾玄岩至高钾钙碱性系列的粗面安山质与粗面质/粗面英安质熔岩或火山碎屑岩,伴有数套煌斑岩夹层与一套流纹岩.火成岩地球化学特征指示其应为地幔来源的派生熔体,且其地幔源区受到交代作用或岩浆形成过程受到了地壳混染,裂谷发育演化过程中伴随着巨量的岩石圈减薄.古太平洋板块侏罗纪低角度俯冲弱化了苏鲁造山带加厚岩石圈地幔,晚侏罗至早白垩世发生回卷,岩石圈地幔发生了重力垮塌被拆沉,导致莱阳期被动裂谷的发育.之后古太平洋板块高角度俯冲、回卷与后撤速率达到了高峰,区域强烈伸展,软流圈物质上涌引起区域快速隆升,导致被动裂谷夭亡.下地壳受上涌软流圈物质加热发生部分熔融,形成的长英质熔体上涌侵位并强烈喷发,裂谷青山期演化为火山弧盆,表现出了一定主动裂谷的特性.综上,灵山岛地区(苏鲁造山带内部)发育莱阳期被动裂谷与青山期火山弧盆(具主动裂谷性质),是从古特提斯构造域向环太平洋构造域转换的记录.苏鲁造山带岩石圈地幔拆沉与软流圈物质上涌是两期裂谷发育、演化的深部动力学机制,裂谷发育演化受到古太平洋板块俯冲、回卷与后撤的远程控制.周腾飞 周瑶琪 Nina SØAGER Paul Martin HOLM 张振凯 王俊 梁钊 穆宏玉 程燕君 刘菲菲 王淼 张悦 张卉 辜洋建 董诗绘 赵汉杰 李曼洁 陈扬 刘燕姿 2022中国科学:地球科学2022,52,10:3
3Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island显示文摘The Lingshan Island scientific drill confirms that two episodes(Laiyang period and Qingshan period) of rifting developed in the central Sulu orogenic belt(SOB) in Late Mesozoic. With a set of methods including fieldwork, drilling, core logging, zircon U-Pb dating and whole rock geochemistry applied, the age, the depositional sequence and the deep dynamic mechanisms of rift evolution were unraveled. The stratigraphic sequence of the Laiyang-Qingshan Groups on Lingshan Island was composed of two different rifting sequences:(1) Laiyang Group(147–125 Ma), which consists of deep-water gravity flow deposits with interlayers of intermediate volcanic rocks;and(2) Lower Qingshan Group(125–119 Ma), which unconformably overlies the former sequence and contains subaerial volcanic deposits and terrestrial deposits. The tectonic environment changed during the evolution of these two episodes of rifting: the rift was in a NNW-SSE extensional environment in the Laiyang period and showed the typical passive rifting character that “lithospheric extension and rifting preceded volcanism”. The passive rifting period was ended by a short WNW-ESE compression at about 125 Ma. After that, the tectonic environment transferred to a strong NW-SE extensional environment and the rifting evolved into a volcanic arc basin in the Qingshan period. The igneous rocks are shoshonitic to high-K calc-alkaline trachyandesites to trachytes with a few intercalated lamprophyres and a rhyolite.The geochemical characteristics of the igneous rocks indicate that they are mantle-derived melts with a metasomatized mantle source and/or crustal contamination. In addition, an increased thinning of the lithosphere happened during the rifting episodes.The low-angle subduction of the Paleo-Pacific plate in the Jurassic weakened the thickened SOB lithospheric mantle. The rollback of the subducting plate started in late Jurassic to early Cretaceous, and the SOB lithospheric mantle was delaminated synchronously because of the gravity collapse. Thus, this caused passive rifting in the Laiyang period. Thereafter, the rollback and trench retreat of the high-angle subducting Paleo-Pacific plate would have achieved its climax, resulting in the strong regional extension. Passive rifting was ended by the crustal uplift caused by asthenospheric upwelling beneath the rift. The lower crust was heated by the upwelling asthenosphere and partially melted to form felsic melts, which were emplaced upwards and erupted explosively. The rift evolved into a volcanic arc basin in the Qingshan period and showed some characteristics of active rifting. Above all, a passive rifting in the Laiyang period and a volcanic arc basin in the Qingshan period developed successively in the Lingshan Island area(the central SOB). This records the transfer of the study area from the Paleo-Tethys tectonic domain to the circum-Pacific tectonic domain. The delamination of SOB lithospheric mantle and the upwelling of asthenospheric material were the deep dynamic mechanisms driving the development and evolution of two rift episodes. Additionally, the rift development was controlled remotely by the subduction of the Paleo-Pacific plate.Tengfei ZHOU Yaoqi ZHOU Nina SФAGER Paul Martin HOLM Zhenkai ZHANG Jun WANG Zhao LIANG Hongyu MU Yanjun CHENG Feifei LIU Miao WANG Yue ZHANG Hui ZHANG Yangjian GU Shihui DONG Hanjie ZHAO Manjie LI Yang CHEN Yanzi LIU 2022Science China Earth Sciences2022,65,9:3
4Strategies to tackle the challenges of external beam radiotherapy for liver tumors显示文摘Primary and metastatic liver cancer is an increasingly common and difficult to control disease entity.Radiation offers a non-invasive treatment alternative for these patients who often have few options and a poor prognosis.However,the anatomy and aggressiveness of liver cancer poses significant challenges such as accurate localization at simulation and treatment,management of motion and appropriate selection of dose regimen.This article aims to review the options available and provide information for the practical implementation and/or improvement of liver cancer radiation programs within the context of stereotactic body radiotherapy and image-guided radiotherapy guidelines.Specific patient inclusion and exclusion criteria are presented given the significant toxicity found in certain sub-populations treated with radiation.Indeed,certain sub-populations,such as those with tumor thrombosis or those with larger lesions treated with transarterial chemoembolization,have been shown to have significant improvements in outcome with the addition of radiation and merit special consideration.Implementing a liver radiation programrequires three primary challenges to be addressed:(1) immobilization and motion management;(2) localization;and(3) dose regimen and constraint selection.Strategies to deal with motion include simple internal target volume(ITV) expansions,non-gated ITV reduction strategies,breath hold methods,and surrogate marker methods to enable gating or tracking.Localization of the tumor and organs-at-risk are addressed using contrast infusion techniques to take advantage of different normal liver and cancer vascular anatomy,imaging modalities,and margin management.Finally,a dose response has been demonstrated and dose regimens appear to be converging.A more uniform approach to treatment in terms of technique,dose selection and patient selection will allow us to study liver radiation in larger and,hopefully,multicenter randomized studies.Michael I Lock Jonathan Klein Hans T Chung Joseph M Herman Edward Y Kim William Small Nina A Mayr Simon S Lo 2017World Journal of Hepatology2017,9,14:2
5Tourism and Environmental Degradation in Sochi,Russia显示文摘 Marat M 1996Annals of Tourism Research1996,,3:1
6A plant caspase-like protease activated during the hypersensitive response显示文摘NINA V C SANG H K ELENA S T 2004Plant Cell2004,16,:1
7Identification of novel potential virulence-associated factors in Haemophilus parasuis 显示文摘MEIKE S NINA B 2009Vet Microbi- ol2009,136,:1
8Sensitivity of aquatic plant to the herbicide metsulfuron-methyl显示文摘Nina C Jens C S Niels H S 2004Ecotoxicology and Environmental Safety2004,57,:1
9Near-Infrared Fluorescence Imaging as an Alternative to Bioluminescent Bacteria to Monitor Biomaterial-Associated Infections显示文摘Nina Dinjaski Suri Shalu Jaione Valle Susan M. Lehman I?igo Lasa María Auxiliadora Prieto Andrés J. García 2014Acta Biomaterialia2014,,:1
10Production and oxidative stability of a human milk fat substitute pro- duced from lard by enzyme technology, in a pilot paeked- bed reactor显示文摘NINA S K TIANKUI Y XUEBING X 2006Food Chem2006,94,1:1
11LOXL4 as a selective molecular marker in primary and metastatic head/neck carcinoma显示文摘Nina S Tibor G 2010Anticancer Res2010,30,11:1
12Synthesis of 6-aminopropyl-6H-indolo quinoxaline derivatives显示文摘Marina 0 S Nina A K Alexandr V M el a1 2012] Heterocyclic Chern2012,49,3:1
13Vegetative buffer zones as pesticide filters for simulated surface runoff 显示文摘NINA S MARIANNE B 2004Ecological Engineering2004,22,3:1
14Morphology and properties of SEBS block copolymer compatibil- ized PS/HDPE blends显示文摘Vesna R Nina V Miroslav S 2008loumal of Elastomers and Plastics2008,40,3:1
15Experience-induced malleability in neural enceding of pitch, timbre, and timing implications for language and music显示文摘NINA K ERIKA S ALEXANDRA PC 2009Ann N Y Aead Sci2009,1169,:1
16Use of rhGH in children with chronic kidney disease:lessons from NAPRTCS显示文摘Mouin G Nina S Bradley W 2001Pediatric Nephrology2001,22,8:1
17Validation of the personal per- formance (PSP) scale in a german sample of acutely ill patients with schizophrenia 显示文摘Georg J Daniela S Nina F 2008Schizophrenia Research2008,,:1
18Soil respiration under elevated CO2 and its partitioning into recently assimilated and older carbon sources显示文摘Astrid R.B. S?e Anette Giesemann Traute-Heidi Anderson Hans-Joachim Weigel Nina Buchmann 2004Plant and Soil (-)2004,,1:1
19Gharacteristics and specificity of hybridoma antibodies against oocyst antigens of Cryptosporidium parvum from man显示文摘MCDONALD V DEER R M A NINA J M S 1991Parasit Immunol1991,13,3:1
20Phylogenetic selection of Narcissus species for drug discovery 显示文摘Nina R Vincent S Per M 2008Biochem Syst Ecol2008,36,5:1
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