A Beta-Ray Microscope.
نویسندگان
چکیده
منابع مشابه
Amyloid fibers are water-filled nanotubes.
A study of papers on amyloid fibers suggested to us that cylindrical beta-sheets are the only structures consistent with some of the x-ray and electron microscope data. We then found that our own 7-year-old and hitherto enigmatic x-ray diagram of poly-L-glutamine fits a cylindrical sheet of 31 A diameter made of beta-strands with 20 residues per helical turn. Successive turns are linked by hydr...
متن کاملThe formation and characterization of cyclodextrin functionalized polystyrene nanofibers produced by electrospinning.
Polystyrene (PS) nanofibers containing the inclusion complex forming beta-cyclodextrin (beta-CD) were successfully produced by electrospinning aimed at developing functional fibrous nanowebs. By optimization of the electrospinning parameters, which included varying the relative concentration of PS and beta-CD in the solutions, bead-free fibers were produced. Homogeneous solutions of beta-CD and...
متن کاملسنتزتودههای کروی TS-1 با استفاده از رزین با قابلیت تبادل آنیون به عنوان درشت‌قالب‌گیر
for several recent years, syntheses of spherical zeolitic materials, such as S-1, ZSM-5 and Beta, have been reported using an anion exchange resin as macro-templates. Conceptually, these syntheses are based on the use of a colloidal crystal templating process. The advantage of this method is preparation of pure self-bonded zeolite micro/macrostructures. In this paper the synthesis of TS-1 is...
متن کاملGreen Synthesis of Zinc Oxide Nanoparticles using Garlic skin extract and Its Characterization
Plant-mediated synthesis of metal oxide nanoparticles is a promising alternative to the traditional method of physical and chemical synthesis. In this paper, we report the green synthesis of zinc oxide nanoparticles (ZnONPs) by a biological method. During the study, Zinc oxide nanoparticles were synthesized by Allium sativum skin (garlic skin) extract. Formation of zinc oxide nanoparticles has ...
متن کاملDirect Machining of Inner Reflecting Surface for a Soft X-ray Microscope
INTRODUCTION A soft X-ray microscope can be used to investigate hydrated specimens, particularly living cells, with a high resolution about several times better than that of a visible light microscope. It can also extend to material science, plasma fusion research, magnetic research, environment science, and so on. The reflecting optics used in a soft X-ray microscope requires supersmooth surfa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Science
دوره 119 3080 شماره
صفحات -
تاریخ انتشار 1954