نتایج جستجو برای: since mid

تعداد نتایج: 565011  

Journal: :acta medica iranica 0
shajari sadeghzadeh sadeghzadeh h. tamidy kh.

birth weight is an important indicator of child survival. appropriate and timely care of a newborn specially if he or she is born with low birth weight is important but this is difficult in developing countries since most of the deliveries are conducted at home where adequate facilities to weight a new born does not exist. this study was conducted to find out a surrogate which could efficiently...

Journal: :Applied spectroscopy 2005
N Kaun J R Baena D Newnham B Lendl

Absorption spectra of aqueous solution of ''chaotropes'' (structure maker) and ''kosmotropes'' (structure breaker) have been recorded in the mid-infrared (MIR) and terahertz (THz) spectral region. A different impact of the two groups of solutes on the absorption spectrum of water was found in the recorded THz spectra. A concentration-dependent increased absorption across the investigated THz sp...

Journal: :Genetics 1999
C Wiuf J Hein

In this article we discuss the ancestry of sequences sampled from the coalescent with recombination with constant population size 2N. We have studied a number of variables based on simulations of sample histories, and some analytical results are derived. Consider the leftmost nucleotide in the sequences. We show that the number of nucleotides sharing a most recent common ancestor (MRCA) with th...

2010
Derek Gatherer

Influenza C contributes to economic damage caused by working days lost through absence or inefficiency and may occasionally cause an acute respiratory illness in a paediatric setting. All Influenza C sequences from the NCBI Influenza Virus Resource were examined to determine the date of the most recent common ancestor (t-MRCA), the average nucleotide substitution rate, and the location of resid...

2016
David B Rowley Alessandro M Forte Christopher J Rowan Petar Glišović Robert Moucha Stephen P Grand Nathan A Simmons

Earth's tectonic plates are generally considered to be driven largely by negative buoyancy associated with subduction of oceanic lithosphere. In this context, mid-ocean ridges (MORs) are passive plate boundaries whose divergence accommodates flow driven by subduction of oceanic slabs at trenches. We show that over the past 80 million years (My), the East Pacific Rise (EPR), Earth's dominant MOR...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1389

the current study examined iranian undergraduate efl students’ willingness to communicate with regard to their vocabulary knowledge. in general, participants were somewhat willing to communicate in english. the total mean score of 730 university students’ perception of willing to communicate was 83.53 out of 135. results, regarding four parts of willingness to communicate, revealed that part...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده ریاضی 1392

ررسی مینیماکس بودن و هم متناهی بودن مدول های کوهمولو‍ژی موضعی موضوع اصلی این رساله می باشد. در این راستا به بیان و اثبات چند قضیه می پردازیم‎.‎ بدین منظور فرض کنید ‎$r$‎ یک حلقه ی جابجایی و نوتری و ‎$i$‎ ایده آلی از ‎$r$‎ باشد. فرض کنید ‎$m$‎ یک ‎$-r$‎مدول ناصفر باشد. نشان می دهیم که ‎$-n$‎ امین بعد متناهی برای هر ‎$n in mathbb{n}_{circ}$‎ به صورت زیر می باشد: ‎$$ f_{i}^{n}(m)‎ :‎= inf leftlb...

2016
Eun Kyeong Lee Takako Yokozawa Takashi Tanaka Nam Deuk Kim Byung Pal Yu Hae Young Chung

Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan 609-735, Republic of Korea Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan Faculty of Pharmaceutical Sciences, Nagasaki University, Nagasaki 852-8131, Japan Department of Physiology, The University of Texas Health Scien...

Journal: :Genetics 2011
Asger Hobolth Lars Nørvang Andersen Thomas Mailund

where f(t |Θ) is the probability density of the coalescent time. Assuming free recombination between loci, the full likelihood is a product of each locus likelihood. In order to determine the likelihood we must determine the density f(t |Θ) for coalescent of two samples in the IM model. Wang and Hey (2009) find the time to the MRCA by explicitly integrating over all possible sample paths in the...

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