Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Raúl A. Barrea"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 269:2084-2089
The L shell fluorescence cross-sections of the elements in range 45 ⩽ Z ⩽ 50 have been determined at 8 keV using Synchrotron radiation. The individual L X-ray photons, Ll, Lα, LβI, LβII, LγI and LγII produced in the target were measured with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36812f450beefc7931c6e2b8b1c521e9
https://doi.org/10.1016/j.nimb.2011.06.016
https://doi.org/10.1016/j.nimb.2011.06.016
Autor:
Joseph P. R. O. Orgel, Raúl A. Barrea, Angela Bongaarts, Lester I. Binder, Robert W. Berry, Eric C. Landahl, Thomas C. Irving, Laurel Vana, Olga Antipova, Sarah E. Rice
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 649:184-187
We describe an instrument to record x-ray diffraction patterns from diseased regions of human brain tissue by combining an in-line visible light fluorescence microscope with an x-ray diffraction microprobe. We use thiazine red fluorescence to specifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e8caab0f928732abd622903a3c185f
https://doi.org/10.1016/j.nima.2011.01.059
https://doi.org/10.1016/j.nima.2011.01.059
Autor:
C. Robert Matthews, R. Paul Nobrega, Rita Graceffa, Raúl A. Barrea, Liang Guo, Sagar V. Kathuria, Thomas C. Irving, Osman Bilsel
Publikováno v:
Biopolymers. 95:550-558
Small-angle X-ray scattering (SAXS) is a powerful method for obtaining quantitative structural information on the size and shape of proteins, and it is increasingly used in kinetic studies of folding and association reactions. In this minireview, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7884e31f2d80bc476e35b369d54f2317
https://doi.org/10.1002/bip.21628
https://doi.org/10.1002/bip.21628
Autor:
Andreana C. Leskovjan, Raúl A. Barrea, Stefan Vogt, Lisa M. Miller, Ariane Kretlow, Antonio Lanzirotti
Publikováno v:
NeuroImage. 55:32-38
Elevated brain iron content, which has been observed in late-stage human Alzheimer's disease, is a potential target for early diagnosis. However, the time course for iron accumulation is currently unclear. Using the PSAPP mouse model of amyloid plaqu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fe873d3b9226b23454606a4ea414279
https://doi.org/10.1016/j.neuroimage.2010.11.073
https://doi.org/10.1016/j.neuroimage.2010.11.073
Publikováno v:
Journal of Synchrotron Radiation. 17:644-652
Micro-focusing optical devices at synchrotron beamlines usually have a limited acceptance, but more flux can be intercepted if such optics are used to focus secondary sources created by the primary optics. Flux throughput can be maximized by placing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd6391cb1eadb8ac451a1783dfcfaf3e
https://doi.org/10.1107/s0909049510024337
https://doi.org/10.1107/s0909049510024337
Autor:
Barry Lai, Jörg Maser, Stefan Vogt, Thomas C. Irving, Tatjana Paunesku, Raúl A. Barrea, Gayle E. Woloschak
Publikováno v:
International Journal of Radiation Biology. 85:710-713
Purpose: To present an overview of the workshop on X-ray fluorescence microscopy (XFM).Results: Talks presented at the workshop and the associated works are highlighted.Conclusions: Use of XFM in biomedical sciences is growing and may be advanced eve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd2efc5c8b3101c747a9bb9eb96bee45
https://doi.org/10.1080/09553000903009514
https://doi.org/10.1080/09553000903009514
Autor:
Huanjie Yang, Q. Ping Dou, Shijie Sheng, G. Prem Veer Reddy, Di Chen, Qiuzhi Cindy Cui, Fazlul H. Sarkar, Raúl A. Barrea, Bing Yan
Publikováno v:
Cancer Research. 67:1636-1644
Tumor growth and metastasis depend on angiogenesis that requires the cofactor copper. Consistently, high levels of copper have been found in many types of human cancers, including prostate, breast, colon, and lung. Recent studies suggest that copper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c48c056dba8942684b2297cf124e917
https://doi.org/10.1158/0008-5472.can-06-3546
https://doi.org/10.1158/0008-5472.can-06-3546
Publikováno v:
Journal of Biomedical Materials Research Part A. :623-628
This work presents a study of elemental composition and preponderant structure of human dental calculus, as they mature in the mouth for a period of 1 year. The synchrotron radiation X-ray fluorescence technique using a white beam was employed as an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fa2a4cbc6f2cce463997d9ee1a16788
https://doi.org/10.1002/jbm.a.30484
https://doi.org/10.1002/jbm.a.30484
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 38:839-852
The angular distribution of the Er L emission after photoionization by linearly polarized monochromatic synchrotron radiation has been measured. A dedicated instrumentation, designed for this kind of experiment, allowed observation of even the smalle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c8d7828b5f8b3caa8f2154030184f0c
https://doi.org/10.1088/0953-4075/38/7/006
https://doi.org/10.1088/0953-4075/38/7/006
Autor:
Edgardo V. Bonzi, Raúl A. Barrea
Publikováno v:
X-Ray Spectrometry. 34:253-257
L x-ray fluorescence cross-sections for elements with 45 ≤ Z ≤ 50 were measured at 7 keV using synchrotron radiation photoionization. The experimental set-up provided a linearly polarized monoenergetic photon beam producing a low background and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d37f24b0c731a514161841d606b4ae2e
https://doi.org/10.1002/xrs.809
https://doi.org/10.1002/xrs.809