نتایج جستجو برای: euclids elements

تعداد نتایج: 276731  

2014
Tobias Mourier Lars P. Nielsen Anders J. Hansen Eske Willerslev

Transposable elements (TEs) are ubiquitous in eukaryotic genomes. Barbara McClintock's famous notion of TEs acting as controlling elements modifying the genetic response of an organism upon exposure to stressful environments has since been solidly supported in a series of model organisms. This requires the TE activity response to possess an element of specificity and be targeted toward certain ...

2012
Rita Rebollo Béatrice Horard Flora Begeot Marion Delattre Eric Gilson Cristina Vieira

Transposable elements (TEs) are a major source of genetic variability in genomes, creating genetic novelty and driving genome evolution. Analysis of sequenced genomes has revealed considerable diversity in TE families, copy number, and localization between different, closely related species. For instance, although the twin species Drosophila melanogaster and D. simulans share the same TE famili...

Journal: :Genome 2013
Brent Saylor Tyler A Elliott Stefan Linquist Stefan C Kremer T Ryan Gregory Karl Cottenie

Transposable elements (TEs) are among the most abundant components of many eukaryotic genomes. Efforts to explain TE abundance, as well as TE diversity among genomes, have led some researchers to draw an analogy between genomic and ecological processes. Adopting this perspective, we conducted an analysis of the cow (Bos taurus) genome using techniques developed by community ecologists to determ...

Journal: :international journal of architecture and urban development 2012
zahra poursoleiman mojgan khakpur

the body of residential complexes is affected by social interactions between residents over time. of the most important places for social communications are bazaars as the backbone of iranian cities. ancient bazaar of babol in north of iran contains natural features which makes a special sense of place. this essay tries to answer to how concept of sense of place is presented and what are factor...

Journal: :modares journal of medical sciences: pathobiology 2010
lida moghadam banaem elahe seddighi looye anoushirvan kazemnejad azam afshar

objective: considering the various evidences due to effects of trace elements on the outcome of pregnancy, we decided to assess the effect of these elements levels in maternal and cord serum on low birth weight. materials and methods: an analytical cross-sectional study was performed on 344 pregnant women in labour and their neonates in maryam, akbarabadi and vali-e-asr hospitals in tehran, ir...

Journal: :caspian journal of enviromental sciences 0

considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of hashemi, khazar and gohar (sa13) rice cultivars, in a factorial design at randomized complete block design with three replications. in t...

1992
Michael B. Monagan

We present space and time efficient algorithms for univariate polynomial arithmetic operations over Z mod n where the modulus n does not necessarily fit into is not a machine word. These algorithms provide the key tools for the efficient implementation of polynomial resultant gcd and factorization computation over Z, without having to write large amounts of code in a systems implementation lang...

Journal: :iranian journal of radiation research 0
k. moosavi van de graff laboratory, nuclear science research school, nuclear science and technology research institute (nstri), tehran, iran s. vatankhah van de graff laboratory, nuclear science research school, nuclear science and technology research institute (nstri), tehran, iran j. salimi vascular surgery department, sina hospital, tehran university of medical sciences, tehran, iran m. moradi van de graff laboratory, nuclear science research school, nuclear science and technology research institute (nstri), tehran, iran

background: proton induced x-ray emission (pixe) has been applied as reliable and improved techniques in this study to compare concentration of various trace elements in normal and abnormal varicose veins. materials and methods: five samples from normal veins and 13 samples from varicose veins bombarded by 2.0 mev energy proton beams produced by a van de graff accelerator in vacuum. two specime...

2011
Timothée Flutre Elodie Duprat Catherine Feuillet Hadi Quesneville

Transposable elements (TEs) are mobile, repetitive DNA sequences that are almost ubiquitous in prokaryotic and eukaryotic genomes. They have a large impact on genome structure, function and evolution. With the recent development of high-throughput sequencing methods, many genome sequences have become available, making possible comparative studies of TE dynamics at an unprecedented scale. Severa...

Journal: :Dalton transactions 2015
Katie R Meihaus Jeffrey R Long

Actinide single-molecule magnetism has experienced steady growth over the last five years since the first discovery of slow magnetic relaxation in the mononuclear complex U(Ph(2)BPz(2))(3). Given their large spin-orbit coupling and the radial extension of the 5f orbitals, the actinides are well-suited for the design of both mononuclear and exchange-coupled molecules, and indeed at least one new...

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