30S ribosomal subunits, 70S ribosomes or polysomes from E. coli were subjected to mild ultraviolet irradiation, and the 3'-terminal region of the 16S RNA was excised by 'addressed cleavage' using ribonuclease H in the presence of suitable complementary oligodeoxynucleotides. RNA fragments from this region containing intra-RNA cross-links were separated by two-dimensional gel electrophoresis and...

quence of the production of excess free radicals, such as reactive oxygen species, and provides marked damage to the structure and function of cell membranes in various tissues. Particularly, the brain is susceptible to free radical insults because it contains a high concentration of easily peroxidizable polyunsaturated fatty acids, and is not particularly enriched in protective antioxidant enz...

Background: Weeds are major factor that leads to increase crop-weed competition and adversely effects of on growth, quality yield urdbean during kharif season. In the critical period for crop weed was first 25-30 days; yields can be reduced by 50-90%, if weeds were not controlled this period. As a result, successful management strategies achieve increased growth yield. Due ease, lower cost, tim...

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This paper provides some reflections on the new macroeconomics of model uncertainty. Model uncertainty is argued to have important positive and normative implications for macroeconomic analysis. We provide a general discussion of the relationship between macroeconomic models that assume a specific model and those that do not and provide some examples from the existing literature. Our discussion...

The purpose of this paper is to prove some coupled fixed point theorems for mapping having the mixed monotone property in partially ordered metric sapces which are generalization of the main results of Bhaskar and Lakshmikantham [T.G. Bhaskar, V. Lakshmikantham, Fixed point theorems in partially ordered metric spaces and applications, Nonlinear Anal.TMA 65(2006) 1379 1393]. We support our resul...

The use of porous titanium samples fabricated by space-holder powder metallurgy with bioactive coatings has already been reported to prevent resorption the bone surrounding implant and improve osseointegration, respectively. However, presence pores as well poor adherence brittle behavior inherent glassy affect service implants from these samples. Therefore, they need be optimized. In this work,...