نتایج جستجو برای: hill equation

تعداد نتایج: 248143  

1995
S. Pepin

The present work is an extension of a previous study of the nucleonnucleon interaction based on the chromo-dielectric soliton model. The former approach was static, leading to an adiabatic potential. Here we perform a dynamical study in the framework of the Generator Coordinate Method. In practice, we derive an approximate Hill-Wheeler di erential equation and ob-

1995
S. Pepin

The present work is an extension of a previous study of the nucleonnucleon interaction based on the chromo-dielectric soliton model. The former approach was static, leading to an adiabatic potential. Here we perform a dynamical study in the framework of the Generator Coordinate Method. In practice, we derive an approximate Hill-Wheeler differential equation and ob-

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2002
Paul Woafo Roberto A Kraenkel

We consider the problem of stability and duration of the synchronization process between self-excited oscillators, both in their regular and chaotic states. Making use of the properties of Hill equation describing the deviation between the slave and the master, we derive the stability conditions and expressions of the synchronization time. A fairly good agreement is obtained between the analyti...

K. Nahar M. Hasanuzzaman, M. Rokonuzzaman M. Shaiful Islam

An experiment was carried out to assess the effect of four nitrogen levels viz. T1 (full doze of urea i.e. 215 kg urea ha-1 at 15 DAT), T2 (full doze of urea at two equal splits, ½ at 15 DAT + ½ at 30 DAT), T3 (full doze of urea at two equal splits, ½ at 15 DAT + ½ at 55 DAT) and T4 (full doze of urea at three equal splits, 1/3 at 15 DAT + 1/3 at 30 DAT + 1/3 at 55 DAT) on morpho-physiological ...

Journal: :The Journal of General Physiology 1998
Izumi Sugihara

Effects of internal Sr2+ on the activity of large-conductance Ca2+-activated K+ channels were studied in inside-out membrane patches from goldfish saccular hair cells. Sr2+ was approximately one-fourth as potent as Ca2+ in activating these channels. Although the Hill coefficient for Sr2+ was smaller than that for Ca2+, maximum open-state probability, voltage dependence, steady state gating kine...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ریاضی 1393

در ابتدا به طور مختصر ارتباط بین مسائل تغییراتی و معادلات دیفرانسیل را بیان می کنیم. همان طور که می دانیم هر معادله دیفرانسیل را می توان به صورت ‎egin{equation} label{yek}‎ ‎a(u)= 0‎ ‎end{equation}‎ نوشت، که در آن ‎$ a(u) $‎ یک عملگر دیفرانسیل معمولی یا جزئی خطی یا غیرخطی و ‎$ u $‎ مجهول می باشد. برای حل این معادلات و به خصوص معادلات دیفرانسیل جزیی غیرخطی راه حل مشخصی وجود ندارد.حساب تغییر...

2013
Kaori Okumura Yoshiaki Shiraishi Akira Iwata

In Japan, occasionally public transportation is temporarily suspended because of typhoons or torrential downpour. Hence, it becomes difficult for many people to return to their homes. Systems for returning refugees have been proposed. However, such systems do not necessarily give Anshin to the people. Anshin is a Japanese noun which stands for sense of security. In this research, we identify th...

Journal: :یافته های نوین در علوم زیستی 0
فاطمه قاسمی fatemeh ghasemi department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه رضا حیدری reza heidari department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه رشید جامعی rashid jamei department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه لطیفه پوراکبر latifeh poorakbar department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه

to assess nickel-induced toxicity in plants, zea mays seeds were germinated and cultured on nutrient solution with nickel concentrations of 0, 50, 100 and 200 μm for a period of two weeks. its effects on the growth, hill reaction and photosynthetic pigments content were then investigated. the fresh and dry weight of leaves and roots increased in 50 μm nickel, but decreased in 100 and 200 μm. th...

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