منابع مشابه
the underlying structure of language proficiency and the proficiency level
هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...
15 صفحه اولEffects of Multiple Structure-soil-structure Interactions Considering the Earthquake Waveform and Structures Elevation Effects
The simultaneous effects of soil and existing structures are known as the site-city interaction (structure-soil-structure). The impact of site-city interaction on structure behavior is effective. Thus, this interaction in some regions decreases the responses while increases in other areas. In addition, the site-city interaction of many parameters including the soil type, density rate, height of...
متن کاملChemical nucleases as probes for studying DNA-protein interactions.
Over the past fifteen years much research has been devoted to the mode(s) by which the linear DNA macromolecule communicates with cellular proteins in the course of genetic programming, thus determining the patterns of growth and development in living organisms. A plethora of proteins have been shown to interact non-covalently with DNA either as structural elements, exemplified by the histones ...
متن کاملMaking the Bend: DNA Tertiary Structure and Protein-DNA Interactions
DNA structure functions as an overlapping code to the DNA sequence. Rapid progress in understanding the role of DNA structure in gene regulation, DNA damage recognition and genome stability has been made. The three dimensional structure of both proteins and DNA plays a crucial role for their specific interaction, and proteins can recognise the chemical signature of DNA sequence ("base readout")...
متن کاملNature of Lithium Interactions with DNA Nucleobases: Theoretical Study
In the present study, the interactions of three different lithium species Li+, Li3+ and CH3Li with several different sites of the most stable tautomers of DNA nucleo-bases are presented. This investigation is based on the results of thermochemical properties, Quantum Theory of Atoms in Molecules (QTAIM) and Natural Bond Orbi...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1969
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(69)86455-6