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Numerical simulations of asteroid breakups, including both the fragmentation of the parent body and the gravitational interactions between the fragments, have allowed us to reproduce successfully the ...
Aggregation of misfolded proteins is characteristic of a number of neurodegenerative diseases, including Huntington disease (HD). The CCT/TRiC (chaperonin containing TCP-1/TCP-1 ring) chaperonin compl...
As a formation route for objects such as giant planets and low-mass stars in protostellar discs (as well as stars in AGN discs), theories of self-gravitating disc fragmentation need to be able to pred...
Accretion disks that become gravitationally unstable can fragment into stellar or sub-stellar companions. The formation and survival of these fragments depends on the precarious balance between self-g...
Abstract: The present paper describes a stochastic model of fracture, whose fragment size distribution can be calculated analytically as a power-law-like distribution. The model is basically cascade f...
The Early Ordovician Bymarka ophiolite fragment is situated in the Upper Allochthon of the central Norwegian Caledonides. Geochemical and geochronological investigations of this and other ophiolite fr...
Based on the neutron induced fission fragment mass distribution data up to neutron energy 20MeV measured with the double kinetic energy method (KEM) and the radio active method (RAM), the systematics...
In northwestern Turkey, the Denizgören ophiolite and its sedimentary substratum, the Ezine Group, are enigmatic geological objects whose evolution remains problematic. Based on long-term fieldwor...
The Bornova Flysch Zone consists of large blocks of Mesozoic limestone, basalt, serpentinite and radiolarian chert in a highly sheared clastic matrix of latest Cretaceous to Paleocene age. We describe...
摘要 利用PCR合成DNA长片段(Synthesis Large Frament DNA using PCR ,SLFD PCR)是一种有效的合成长片段DNA的方法。采用一段已知的500~600碱基的DNA片段为PCR模板,根据所要合成的DNA序列可以设计一系列的PCR引物,这些引物都位于模板DNA的5′端,长度为50~60 bp, 且从5′到3′方向顺序重叠 ,重叠碱基数目为12~15,全部引...
摘要DNA显微注射是生产转基因动物最可靠和最常使用的一种方法,外源DNA的纯度对显微注射的成功起着至关重要的作用。本文介绍用氯化钠密度梯度离心的方法制备用于显微注射的外源DNA片段。与传统的琼脂糖凝胶回收的方法相比较,用此方法制备的外源DNA片段对小鼠受精卵进行显微注射后,受卵体母鼠的胚胎存活率,以及子代小鼠的外源基因整合率均有明显的提高。这一方法可为进一步提高转基因动物的成功率,提供方法学上的参...
摘要根据衣藻、矮牵牛花、Pisumsativum等真核生物hsp70a氨基酸高度保守序列设计两对简并引物,以热休克盐藻cDNA为模板进行巢式PCR扩增,产物经T-A克隆转化至JM109大肠杆菌中,经筛选后测序,将测序结果推导成氨基酸序列进行同源性分析,获得了盐藻热休克蛋白70a cDNA片段。在盐藻中所获得的cDNA片段,核苷酸长度为372 bp,编码126个氨基酸。推导的氨基酸序列与与下列物种的...
This study explores the applicability of DNA analyses for the characterization of primary biogenic aerosol (PBA) particles in the atmosphere. Samples of fine particulate matter (PM2.5) and total suspe...
2003Vol.40No.6pp.693-698DOI: Momentum Distribution of a Fragment and Nucleon Removal Cross Section in the Reaction of Halo Nuclei ZHAO Yao-Lin,1 MA Zhong-Yu,1,2,3 and CHEN Bao-Qiu...
专著信息 书名 An integrated genetic map of Populus deltoides abased on amplified fragment length polymorphism. Theoretical and Applied Genetics,2000,100(8):1249-1256 语种 英文 撰写或编译 作者 Wu Rongling,HanYifan,Li l...

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