نتایج جستجو برای: a new challenge has been caused so

تعداد نتایج: 13984913  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده علوم پایه 1391

abstract the balvard metamorphic assemblage (bma) crops out at the northeastern margin of the southeastern part of the sanandaj-sirjan zone (ssz) in contacting to the dehshir-baft ophiolitic mélange. this location prepared a special situation to resolve some of the complicated tectonic problems of this part of iran. petrology, micro-tectonics and satellite image investigation were carried out ...

Emergence of new geopolitical affairs in the important and sensitive places of the world, like the Middle East, Balkan, Central Asia (Caucasus zone) and… has caused emergence of a new trend of so called cold war with variables like the expansion of NATO to the East, the U.S. missile Defense shield, Georgia’s events, the prevalent problems of the Middle East, those of Pakistan and Afghanistan, o...

2004

We study the level and severity of asset poverty, the characteristics of asset-poor households, the trends and persistence of asset poverty, and the role of major lifetime events affecting transitions in and out of asset poverty. We find that, contrary to a sharp decline in the official measure of poverty, which is based on income, the asset poverty rate barely changed over the 1984–99 period a...

Journal: :Journal of bacteriology 1964
A L DEMAIN I M MILLER D HENDLIN

Demain, A. L. (Merck Sharp & Dohme Research Laboratories, Rahway, N.J.), I. M. Miller, and D. Hendlin. Production of extracellular guanosine-5'-monophosphate by Bacillus subtilis. J. Bacteriol. 88:991-995. 1964.-Wild-type Bacillus subtilis colonies were found to feed purineless mutants. A strain with high feeding capacity was selected for study, with a guanineless mutant of B. subtilis used as ...

Journal: :Physical review letters 2004
G Rubio-Bollinger P Joyez N Agraït

We report high resolution simultaneous measurements of electrical conductance and force gradient between two sharp gold tips as their separation is varied from the tunneling distance to atomic-size contact. The use of atomically sharp tips minimizes van der Waals interaction, making it possible to identify the short-range metallic adhesion contribution to the total force.

ژورنال: زیست شناسی ایران 2020

New coronavirus as a pandemic threatens whole world. This virus as a member of coronavirus family has new and unknown characteristics and no vaccine or treatment agent has been developed for this infectious disease. Regarding the successful experience of public health measures in SARS outbreak controlling and haltering, the infected countries have applied these proceedings widely to control new...

Journal: :Journal of Crohn's and Colitis 2021

Journal: :Zootaxa 2014
Margarita M López-García Diana M Méndez-Rojas

The monotypic genus Linoderus Sharp, 1885 was described based on a species from Panama and since the original description nearly nothing has been added to its taxonomical knowledge. The aim of the present paper is to describe a new species of the genus from Colombia and to report the genus for the first time from South America, adding some biological notes of the species.

2008
Alekos Vidras

In the present article we give geometric generalizations of the estimates from Chapters 5,6,7 from [4], while extending their sharpness to new cases.

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