The study of methylene blue (MB) binding to DNA has been carried out by fluorescence spectroscopy method. It was shown that on the fluorescence spectra of MB and its complexes with DNA two peaks exist at λ=583 nm and λ=682 nm wavelengths. Peak at λ=583 nm enhances with increasing of DNA concentration, but at λ=682 nm it decreases. The comparison of obtained data with the results received for DN...

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INTRODUCTION 657 L HISTORICAL ORIGINS 660 A, Emergence of the American Medical Association 661 B, Relationship Between Law and Ethics ,. 664 C, Reluctance to Treat 666 IL IN THE ABSENCE OF AN "EMERGENCY" 668 K. Americans with Disabilities Act 669 B. Direct Threat 671 C. Specialists 674 D, State Laws 676 E, Emergency Medical Treatment and Active Labor Act 678 in. EMERGENCY LEGAL FRAMEWORK 682 A,...

Wendong Zhang and Mike E. Duffy 2 1: Assistant Professor, Department of Economics, Iowa State University 3 478C Heady Hall, 518 Farm House Lane, Ames, Iowa, 50011 4 515-294-2536, 5 [email protected] 6 2: Professor Emeritus, Department of Economics, Iowa State University 7 475 Heady Hall, 518 Farm House Lane, Ames, Iowa, 50011 8 [email protected] 9 10 forthcoming at Journal of American Societ...

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In this study of the electroretinograms of dragonflies (adults and nymphs) the objectives were to determine the number of classes of photoreceptors present in the visual system and to allocate these to particular morphological regions. There are probably five classes of photoreceptors present with peak sensitivities near 550, 530, 518, 420, and < 380 mmicro. The dorsal ocelli contain two classe...