نتایج جستجو برای: drift ratio

تعداد نتایج: 532180  

2016
Xingguang Li Junjie Zai Haizhou Liu Yi Feng Fan Li Jing Wei Sen Zou Zhiming Yuan Yiming Shao

Following its immergence in December 2013, the recent Zaire Ebola virus (EBOV) outbreak in West Africa has spread and persisted for more than two years, making it the largest EBOV epidemic in both scale and geographical region to date. In this study, a total of 726 glycoprotein (GP) gene sequences of the EBOV full-length genome obtained from West Africa from the 2014 outbreak, combined with 30 ...

ژورنال: بوم شناسی آبزیان 2014
Ghorbani, Rasul , Paighambari, Seyed Yousef , Parsa, Mehran , Shabani, Mohammad javad ,

The aim of this study was to comparing the effect of different hanging ratios (E=0.5 and 0.6) of drift gillnets on catch rates, length composition and Catch per Unit Effort (CPUE) in Bushehr coastal waters between late September 2010 to late March 2011. The length frequency of Spanish Makerels did not differ significantly between gillnets with 0.5 and 0.6 hanging ratios (P>0.05). A total of 558...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
M Zelan H Hagman K Karlsson C M Dion A Kastberg

Experimental and theoretical studies are made of Brownian particles trapped in a periodic potential, which is very slightly tilted due to gravity. In the presence of fluctuations, these will trigger a measurable average drift along the direction of the tilt. The magnitude of the drift varies with the ratio between the bias force and the trapping potential. This can be closely compared to a theo...

Journal: :Nature 1970

2015
Anna TINTI Vitaliano TUGNOLI Sergio BONORA Ornella FRANCIOSO

The present review highlights the recent applications of mid-infrared spectroscopy and in particular of diffuse reflectance spectroscopy (DRIFT) and attenuated total reflectance (ATR) and processing methods (e.g., deconvolution, derivative and chemometrics) to rapidly provide valuable information on soil composition and organic geochemistry. Research has demonstrated that both DRIFT and ATR tec...

Journal: :Genetics 2001
J Wang

An approach to the optimal utilization of marker and pedigree information in minimizing the rates of inbreeding and genetic drift at the average locus of the genome (not just the marked loci) in a small diploid population is proposed, and its efficiency is investigated by stochastic simulations. The approach is based on estimating the expected pedigree of each chromosome by using marker and ind...

Journal: :Journal of evolutionary biology 2016
T E Douglas J E Strassmann D C Queller

Theory indicates that numbers of mating types should tend towards infinity or remain at two. The social amoeba, Dictyostelium discoideum, however, has three mating types. It is therefore a mystery how this species has broken the threshold of two mating types, but has not increased towards a much higher number. Frequency-dependent selection on rare types in combination with isogamy, a form of re...

2015
Songxian Yan Dongfa Sun Genlou Sun

Little is known about the genetic divergence in the chromosomal regions with domesticated and non-domesticated genes. The objective of our study is to examine the effect of natural selection on shaping genetic diversity of chromosome region with domesticated and non-domesticated genes in barley using 110 SSR markers. Comparison of the genetic diversity loss between wild and cultivated barley fo...

Journal: :Nature 1870

Journal: :archiver 2012

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