نتایج جستجو برای: synchrotron

تعداد نتایج: 17232  

2015
Rajkamal Balu Robert Knott Nathan P. Cowieson Christopher M. Elvin Anita J. Hill Namita R. Choudhury Naba K. Dutta

Rec1-resilin is the first recombinant resilin-mimetic protein polymer, synthesized from exon-1 of the Drosophila melanogaster gene CG15920 that has demonstrated unusual multi-stimuli responsiveness in aqueous solution. Crosslinked hydrogels of Rec1-resilin have also displayed remarkable mechanical properties including near-perfect rubber-like elasticity. The structural basis of these extraordin...

Journal: :Analytical biochemistry 1997
G De Stasio M Capozi T C Droubay D Mercanti M T Ciotti G F Lorusso R Andres T Suda P Perfetti B P Tonner G Margaritondo

We analyzed the effects of cold oxygen plasma ashing of neurobiological specimens on different elements with synchrotron spectromicroscopy. Our results demonstrate that while carbon is almost completely removed, phosphorus, calcium, potassium, sulfur, and, to some extent, nitrogen are retained and their relative concentration is enhanced.

عبدالله محمدی تبار, , محمد ابراهیم قاضی, , هادی عربشاهی, ,

 Studies of phenomena such as charge, orbital and spin ordering in manganite has attracted much interest in recent years. These studies have been possible from an experimental point of view by the third generation synchrotron sources. X-ray with high flux density, tunable energy and polarization can be produced in synchrotron sources. Experiments have shown a resonant in peak intensity originat...

Journal: :Journal of structural biology 2011
Silvia Russi Douglas H Juers Juan Sanchez-Weatherby Erika Pellegrini Estelle Mossou V Trevor Forsyth Julien Huet Alexandre Gobbo Franck Felisaz Raphael Moya Sean M McSweeney Stephen Cusack Florent Cipriani Matthew W Bowler

The increase in the number of large multi-component complexes and membrane protein crystal structures determined over the last few years can be ascribed to a number of factors such as better protein expression and purification systems, the emergence of high-throughput crystallization techniques and the advent of 3rd generation synchrotron sources. However, many systems tend to produce crystals ...

امیری, سمیه, رحیقی, جواد, غلام پورآژیر, اعظم, لامعی رشتی, محمد,

In this paper, we have discussed about the role of two emittance values suggested for Iranian Light Source Facility (ILSF) (3.278 and 0.476 nm.rad) on different radiation features of the synchrotron light sources (bending magnet, shaker and oscillator) such as spot size, divergence of the beam on light spot, brilliance and important quantities in beamline design such as photon cross-section, op...

2015
Baofu Qiao Geoffroy Ferru Monica Olvera de la Cruz Ross J. Ellis

Controlling the assembly of soft and deformable molecular aggregates into mesoscale structures is essential for understanding and developing a broad range of processes including rare earth extraction and cleaning of water, as well as for developing materials with unique properties. By combined synchrotron small- and wide-angle X-ray scattering with large-scale atomistic molecular dynamics simul...

1998
E. Pian G. G. C. Palumbo

Only ∼10 blazars have been detected in soft gamma-rays by OSSE and the PDS, often in flaring state. We investigate the impact of the imaging and spectral capabilities of the IBIS instrument on board INTEGRAL on the study of blazars. The objectives are: 1) to remove ambiguities in the identification of some blazars as soft gamma-ray emitters; 2) to determine the spectral shape of “extreme synchr...

1999
A. M. Stirling

We present multi-frequency VLBA+VLA observations of SS433 at 1.6, 5 and 15 GHz. These observations provide the highest angular resolution radio spectral index maps ever made for this object. Motion of the components of SS433 during the observation is detected. In addition to the usual VLBI jet structure, we detect two radio components in the system at an anomalous position angle. These newly di...

Journal: :iranian journal of radiation research 0
a. maziar department of medical physics, school of medicine, isfahan university of medical sciences, isfahan, iran d. shahbazi-gahrouei department of medical physics, school of medicine, isfahan university of medical sciences, isfahan, iran m.b. tavakoli department of medical physics, school of medicine, isfahan university of medical sciences, isfahan, iran v. changizi department of medical physics, tehran university of medical sciences, tehran, iran z. ghasemian department of medical physics, school of medicine, isfahan university of medical sciences, isfahan, iran

background: an early diagnosis of breast cancer relates directly to an accurate treatment plan and strategy. early detection of breast cancer before its development would be a significant reduction of morbidity and mortality rates. the aim of this preliminary study is to investigate the sensitivity of wide angle x-ray diffraction (waxrd) method on women hair samples of healthy and breast cancer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده فیزیک 1384

در این پایان نامه به بررسی کمی یک سیستم تصویربرداری پراش افزوده(diffraction enhanced imaging-dei) پرداخته ایم. بدین منظور مشخصات توان و شار و نحوه توزیع پرتوهای سینکروترون مورد بررسی قرار داده و سپس محاسبات پرتو خط بیم(national synchrotron light source) nsls شامل رزولوشن انرژی و شار رسیده به نمونه را انجام دادیم و در نهایت با ارائه یک مدل برای سیستم dei میزان بهبود کنتراست تصویر در این سیستم نس...

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