نتایج جستجو برای: population inversion

تعداد نتایج: 736537  

Journal: :international journal of molecular and cellular medicine 0
sahar shekoohi department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) majid mojarrad department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) reza raoofian department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) shahab ahmadzadeh department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) salmah mirzaie department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) mohammad hassanzadeh-nazarabadi department of medical genetics, school of medicine, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

spontaneous abortion (sab) is the most common complication of early pregnancy. numerous risk factors are associated with an increased risk of pregnancy loss such as: blighted ovum. the aim of this study was to determine the frequency of balanced chromosomal translocations in couples with a history of recurrent spontaneous abortions and ultrasound diagnosed blighted ovum. sixty eight couples wit...

2003
THEODOSIUS DOBZHANSKY

N MOST parts of the geographic distribution of Drosophila psezcdoobscura, I chromosomal types which differ in gene arrangement in the third, the X, and, less frequently, in other chromosomes occur in the populations. The diversity of the gene orders is due to inversion of chromosome sections. Since the chromosomal types interbreed a t random, inversion heterozygotes and homozygotes are found in...

One of the most remarkable basis of the gravity data inversion is the recognition of sharp boundaries between an ore body and its host rocks during the interpretation step. Therefore, in this work, it is attempted to develop an inversion approach to determine a 3D density distribution that produces a given gravity anomaly. The subsurface model consists of a 3D rectangular prisms of known sizes ...

2014
Bahram Namjou Yizhao Ni Isaac T. W. Harley Iouri Chepelev Beth Cobb Leah C. Kottyan Patrick M. Gaffney Joel M. Guthridge Kenneth Kaufman John B. Harley

UNLABELLED To explore the potential influence of the polymorphic 8p23.1 inversion on known autoimmune susceptibility risk at or near BLK locus, we validated a new bioinformatics method that utilizes SNP data to enable accurate, high-throughput genotyping of the 8p23.1 inversion in a Caucasian population. METHODS Principal components analysis (PCA) was performed using markers inside the invers...

Seismic inversion is a method that extracts acoustic impedance data from the seismic traces. Source wavelets are band-limited, and thus seismic traces do not contain low and high frequency information. Therefore, there is a serious problem when the deterministic seismic inversion is applied to real data and the result of deterministic inversion is smooth. Low frequency component is obtained fro...

The aim of seismic inversion is mapping all of the subsurface structures from seismic data. Due to the band-limited nature of the seismic data, it is difficult to find a unique solution for seismic inversion. Deterministic methods of seismic inversion are based on try and error techniques and provide a smooth map of elastic properties, while stochastic methods produce high-resolution maps of el...

2013
Andre G. Wallace Don Detweiler Stephen W. Schaeffer

Paracentric inversions in populations can have a profound effect on the pattern and organization of nucleotide variability along a chromosome. Regions near inversion breakpoints are expected to have greater levels of differentiation because of reduced genetic exchange between different gene arrangements whereas central regions in the inverted segments are predicted to have lower levels of nucle...

2015
D. Mantei J. Förstner S. Gordon Y. A. Leier A. K. Rai D. Reuter A. D. Wieck A. Zrenner

The coherent state preparation and control of single quantum systems is an important prerequisite for the implementation of functional quantum devices. Prominent examples for such systems are semiconductor quantum dots, which exhibit a fine structure split single exciton state and a V-type three level structure, given by a common ground state and two distinguishable and separately excitable tra...

2013
KRISTAN CORWIN

short): Hollow-core Optical Fiber Gas LASer (HOFGLAS) have been created, and explored in pulsed mode with C2H2 and HCN gas inside the hollow core of a kagome structured photonic crystal fiber, and nearideal efficiencies were realized for wavelengths near 1.5 μm (pump, 1 ns-pulses) and 3 μm (lasing). Improved fiber loss is realized near 3 μm to <1 dB/m. In addition, a pulsed CO2 waveguide (silve...

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