نتایج جستجو برای: horizontal

تعداد نتایج: 61965  

Journal: :Current Biology 2013
Brigid M. Davis Matthew K. Waldor

Integrative conjugative elements (ICEs) enable horizontal gene transfer among bacteria. In Pseudomonas, only a phenotypically distinct subpopulation of ICE-bearing cells can mobilize ICE DNA to new hosts. Transfer competence is a terminal state; division is limited, and many cells lyse.

2014
Rajat S. Roy Dana C. Price Alexander Schliep Guohong Cai Anton Korobeynikov Hwan Su Yoon Eun Chan Yang Debashish Bhattacharya

A broad swath of eukaryotic microbial biodiversity cannot be cultivated in the lab and is therefore inaccessible to conventional genome-wide comparative methods. One promising approach to study these lineages is single cell genomics (SCG), whereby an individual cell is captured from nature and genome data are produced from the amplified total DNA. Here we tested the efficacy of SCG to generate ...

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2011
Carolina E César Laura Álvarez Carlos Bricio Esta van Heerden Dereck Littauer José Berenguer

Conjugation and natural competence are two major mechanisms that explain the acquisition of foreign genes throughout bacterial evolution. In recent decades, several studies in model organisms have revealed in great detail the steps involved in such processes. The findings support the idea that the major basis of these mechanisms is essentially similar in all bacteria. However, recent work has p...

Journal: :فیزیک زمین و فضا 0
محمد علی احمدی مؤسسه ژئوفیزیک دانشگاه تهران، دانشجوی کارشناسی ارشد وحید ابراهیم زاده اردستانی مؤسسه ژئوفیزیک دانشگاه تهران، دانشیار

in this paper, it has been shown that there is a special relation between horizontal and vertical gradients of gravity data and the vertical and horizontal components of magnetic data for some of 2-d sources. it has been shown that the hilbert transform is useful in calculating the vertical gradient of gravity and magnetic anomalies from the horizontal gradient for transformation of gravity and...

Journal: :Research Journal of Applied Sciences, Engineering and Technology 2013

Journal: :journal of petroleum science and technology 0
da peng gao institute of mechanics, chinese academy of sciences liu yuewu institute of mechanics, chinese academy of sciences ye jigen petrochina research institute of petroleum exploration & development, beijing, china hu yunpeng petrochina research institute of petroleum exploration & development, beijing, china hou shaoji institute of mechanics, chinese academy of sciences han guofeng institute of mechanics, chinese academy of sciences han guofeng

for the characteristics of horizontal fractures in shallow low-permeability oil layers after hydraulic fracturing in multilayer reservoirs, horizontal fractures are taken equivalent to an elliptical cylinder with the reservoir thickness using the equivalent permeability model; then, upon the elliptic seepage theory, the seepage field which has led by a vertical well with horizontal fractures is...

Journal: :International Journal of Industrial Organization 2003

Journal: :Nippon Jibiinkoka Gakkai Kaiho 1959

Journal: :Monthly Weather Review 1896

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