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comparative methane production and yields from adult sheep, cattle and red deer

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Comparative methane production and yields from adult sheep, ...

Phase-plane analysis of conserved higher-order traffic flow model

第七届草食动物营养国际学术研讨会

作者： N.M.Swainson S.O.Hoskin H.clark c.S.Pinares-Pati■o I.M.Brookes K.Joblin

＜正＞Greenhouse gas emissions are currently under the international spotlight due to concerns about global warming and climate *** Kyoto Protocol is an international agreement which New Zealand has signed,and under obligations of the agreement,New Zealand must reduce its greenhouse gas emission levels to the baseline year（1990）,by the first ratification of the Protocol in *** emissions from ruminant livestock in New Zealand represents 31.8% of New Zealand’s total greenhouse gas emissions,therefore accurate inventories of methane production for all farmed livestock classes are *** for methane emissions from ruminant livestock are based on the methane yield, methane（grams）per unit of dry matter intake,and largely based on research conducted in New Zealand using the sulphur hexafluoride（SF6）technique. currently,research with sheep,red deer and cattle,in New Zealand using the SF6 technique,has shown that methane yields appear similar across all three ruminant species,despite possible differences in digestive physiology and apparent digestibility between ***,this finding may be confounded by methane measurements of each species being taken at different times with varying *** aim of this study was to compare the methane yields of the major farmed ruminant species in New Zealand,cattle,sheep and deer,to when animals are fed the same ensiled lucerne（Medic.go sativa）diet and housed under similar conditions at the same *** are to follow as the experiment is due to be conducted in January 2007.

关键词： methane red deer cattle sheep sulphur hexafluoride technique

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Applied Mathematics and Mechanics(English Edition) 2012年第12期33卷 1505-1512页

作者：吴春秀宋涛张鹏 S.c.WONG Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai Key Laboratory of Mechanics in Energy Engineering Department of civil Engineering The University of Hong Kong

The phase-plane analysis is used to study the traveling wave solution of a recently proposed higher-order traffic flow model under the Lagrange coordinate system. The analysis identifies the types and stabilities of the equilibrium solutions, and the overall distribution structure of the nearby solutions is drawn in the phase plane for the further analysis and comparison. The analytical and numerical results are in agreement, and may help to explain the simulated phenomena, such as the stop-and-go wave and oscillation near a bottleneck. The findings demonstrate the model ability to describe the complexity of congested traffic.

关键词： traffic flow Lagrange coordinates phase-plane analysis traffic congestionpattern

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Transition metal impurities in silicon:computational search for a semiconductor qubit

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npj computational Materials 2022年第1期8卷 1674-1684页

作者： cheng-Wei Lee Meenakshi Singh Adele c.Tamboli Vladan Stevanović colorado School of Mines GoldenCOUSA National Renewable Energy Laboratory GoldenCOUSA

Semiconductors offer a promising platform for physical implementation of qubits,but their broad adoption is presently hindered by limited scalability and/or very low operating *** from the nitrogen-vacancy centers in diamond,our goal is to find equivalent optically active point defect centers in crystalline silicon,which could be advantageous for their scalability and integration with classical *** metal(TM)impurities in silicon are common paramagnetic deep defects,but a comprehensive theoretical study of the whole 3d series that considers generalized Koopmans’condition is *** apply the HSE06(+U)method to examine their potential as optically active spin qubits and identify seven TM impurities that have optically allowed triplet–triplet transitions within the silicon band *** results provide the first step toward silicon-based qubits with higher operating temperatures for quantum ***,these point defects could lead to spin-photon interfaces in silicon-based qubits and devices for mid-infrared free-space communications.

关键词： Transition centers allowed

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苏-27大战F-15

航空知识 2006年第7期 68-70页

作者： 3go-353 Mickey 陈蔡祺

又是一个宁静的夜晚。一切看起来都是非常平常,但在网络的虚拟天空上,一场虚拟的现代空战即将爆发。由于U国发生政变,原本与R国的友谊中断,R国以安定政府为由,强行占领了U国1/3的城市以及机场。M国为了援助政变政府,向U国派出了自己强... 详细信息

又是一个宁静的夜晚。一切看起来都是非常平常,但在网络的虚拟天空上,一场虚拟的现代空战即将爆发。由于U国发生政变,原本与R国的友谊中断,R国以安定政府为由,强行占领了U国1/3的城市以及机场。M国为了援助政变政府,向U国派出了自己强大的兵力。一场虚拟的战争就这样开始了。今天,M国飞行员的任务是:护送c-17运输机到16号机场。由于战线被R国地面部队中断,只好出动这架c-17运输机运送物资。由于情报被R国截获,R国也迅速命令6架苏-27对他们进行偷袭,加速截断16号机场里M国部队的物资支援。游戏时间:早上8:56;地点:20号机场。 6架F-15c已经启动好发动机在停机坪上等待起飞。指挥M方的指挥官正通过麦克风对6名飞行员做最后战术安排。这

关键词：闪光弹干扰丝 AIM 指挥官规避机动

ZMPSTE24的纯合子和复合杂合子突变引起核纤层病变性限制性皮病

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世界核心医学期刊文摘（皮肤病学分册） 2006年第8期2卷 18-19页

作者： Moulson c.L. go G. Gardner J.M. J.H. Miner 朱国兴 Renal Division Box 8126Washington University School of Medicine 660 S. Euclid Ave. St Louis MO 63110 United States Dr.

Restrictive dermopathy (RD) is a lethal human genetic disorder characterized by very tight, thin, easily eroded skin, rocker bottom feet, and joint contractures. This disease was recently reported to be associated with a single heterozygous mutation in ZMPSTE24 and hypothesized to be a digenic disorder (Navarro et al, Lamin A and ZMPSTE24 (FAcE-1) defects cause nuclear disorganization and identify restrictive dermopathy as a lethal neonatal laminopathy. Hum Mol Genet 13:2493- 2503, 2004). ZMPSTE24 encodes an enzyme necessary for the correct processing and maturation of lamin A, an intermediate filament component of the nuclear envelope. Here we present four unrelated patients with homozygous mutations in ZMPSTE24 and a fifth patient with compound heterozygous mutations in ZMPSTE24. Two of the three different mutations we found are novel, and all are single base insertions that result in messenger RNA frameshifts. As a consequence of the presumed lack of ZMPSTE24 activity, prelamin A, the unprocessed toxic form of lamin A, was detected in the nuclei of both cultured cells and tissue from RD patients, but not in control nuclei. Abnormally aggregated lamin A/c was also observed. These results indicate that RD is an autosomal recessive laminopathy caused by inactivating ZMPSTE24 mutations that result in defective processing and nuclear accumulation of prelamin A.

关键词：复合杂合子突变位点纯合子皮病核纤层变性信使RNA 4基因特征表现

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china and the United States： The contest for Global Economic Leadership

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china & World Economy 2018年第5期26卷 12-37页

作者： c. Fred Bergsten Peterson Institute for International Economics USA

This paper considers whether there is a ＂Thucydides trap ＂＇ in the world economy, referring to the inherent conflict between incumbent and challenger It assesses the impact of President Trump ~ alienation of traditional US allies, which threatens to splinter the ＂hegemonic coalition ＇＂ and even push china and Europe together, and his convergence toward some chinese norms on trade and even polities. It outlines three possible systemic scenarios： a ＂go＂ in which the US is no longer willing to lead but china is not yet able or willing, and whether such a （likely） regime will be stable or unstable; a new ＂G1, ＂＇ sooner or later, led by china; and a cooperative ＂G2 ＂＂ in which the US and china agree to share leadership. It traces the evolution of actual leadership initiatives of the two countries in recent years. It compares US and chinese attitudes on key systemic issues and concludes with an appraisal of ＂＇an international economic order with chinese characteristics, ＂＂ a worm in which the state plays a greater role relative to market economics, the rule of law defers increasingly to voluntary arrangements, and politics tilt toward central ~overnment control more than democracy.

关键词： G2 global leadership hegemonic coalition trade war

cOMBINED QEXAFS-XRD,A NEW TEcHNIQUE cOMBINING IN-SITU FAST ScANNING X-RAY ABSORPTION SPEcTROScOPY AND X-RAY DIFFRAcTION

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COMBINED QEXAFS-XRD,A NEW TECHNIQUE COMBINING IN-SITU FAST S...

Sixteenth congress of the International Union of crystallography

作者： G N Greaves A J Dent B R Dobson S M clark c A Ramsdale G Sankar P A Wright S Natarajan J M Thomas R H Jones SERc Daresbury Laboratory WarringtonUK. The Royal Institution 21Albemarle StreetLondonUK. Department of chemistry The University of KeeleKeeleUK.

We have recently demonstrated the value of the combined use of Energy Dispersive X-Ray Absorption Spectroscopy and X-ray Diffraction (XRD) in tracing the in-situ conversion of a mineral precursor, aurichalcite(cu Znx(...

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简并PcR扩增小瓜虫抑动抗原基因的ORF

中国水产科学 2004年第2期11卷 135-138页

作者：杨金先,陈强,刘晓东,林天龙,Theodore G.clark 福建省农业科学院畜牧兽医研究所福建省农业科学院地热研究所福建省农业科学院畜牧兽医研究所福建省农业科学院畜牧兽医研究所 Department of Microbiology and Immunology college of Veterinary Medicine 福建福州350003 福建福州350003 福建福州350003 福建福州350003 cornell University Ithaca New York 14853 U.S.A

抑动蛋白是小瓜虫(Ichthyophthiriusmultifiliis)体表纤毛的主要构成部分,也是宿主免疫系统发挥抗虫免疫时的主要识别抗原。根据已经报道的3种抑动蛋白N端及c端保守的多肽片断,设计了一对简并引物P6/P7,以小瓜虫分离株IchFJ9的基因组为... 详细信息

抑动蛋白是小瓜虫(Ichthyophthiriusmultifiliis)体表纤毛的主要构成部分,也是宿主免疫系统发挥抗虫免疫时的主要识别抗原。根据已经报道的3种抑动蛋白N端及c端保守的多肽片断,设计了一对简并引物P6/P7,以小瓜虫分离株IchFJ9的基因组为模板,成功扩增了抑动蛋白编码区(ORF)的全长基因序列。扩增的iagFJ9基因全长1398bp,编码466个氨基酸,包含18个非标准密码子TAA(Glu,Q)推导的氨基酸序列包含6个以cPXGT为起始的串联重复单位,具有抑动蛋白的特征性结构。同源比较分析显示,扩增的iagFJ9基因与已知的小瓜虫抑动蛋白基因IAG52A基因具有88%同源率。证实了iagFJ9是一个新发现的抑动蛋白基因,用简并PcR技术去发现小瓜虫抑动蛋白基因家族新基因是可行的。

关键词：小瓜虫抑动蛋白抗原简并PcR

孔源性视网膜脱离的遗传因素一个家族聚集性调查

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美国医学会眼科杂志（中文版） 2006年第3期18卷 191-192页

作者： Sloe Lie go carel B. Hoyng caroline c. W. Klaver 刘亮（译）雷嘉启（校）

目的：对无症状孔源性视网膜脱离患者行家族聚集性调查，分析其中遗传因素的影响。

关键词：孔源性视网膜脱离家族聚集性遗传因素无症状