نتایج جستجو برای: 30 to 50

تعداد نتایج: 10764993  

1995
David Merritt

Estimation of the distribution function f and potential of hot stellar systems from kinematical data is discussed. When the functional forms of f and are not speciied a priori, accurate estimation of either function requires very high quality data : either accurate \line prooles" at radii extending well beyond an eeective radius, or large samples (N > 10 3) of discrete radial velocities. Estima...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :Current opinion in cell biology 1993
J R Swedlow D A Agard J W Sedat

Recent in situ three-dimensional structural studies have provided a new model for the 30 nm chromatin fiber. In addition, research during the past year has revealed some of the molecular complexity of non-histone chromosomal proteins. Still to come is the unification of molecular insights with chromosomal architecture.

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