F A Fernandez-Lima,M J Eller,J D Debord et al.
F A Fernandez-Lima et al.
This paper describes the advantages of using single impacts of large cluster projectiles (e.g. C(60) and Au(400)) for surface mapping and characterization. The analysis of co-emitted time-resolved photon spectra, electron distributions and ...
Francisco Alberto Fernandez-Lima,Marco Antonio Chaer Nascimento,Enio Frota da Silveira
Francisco Alberto Fernandez-Lima
The most abundant geometries and relative stabilities of alkali halide clusters with a (XY)(n) (o) configuration (e.g., LiF, NaCl, KBr) are described. Five main series were obtained: linear, cyclic, cubic, arc strips and nanotubes. The stab...
Andrew D Harken,Gerhard Randers-Pehrson,Gary W Johnson et al.
Andrew D Harken et al.
A soft x-ray microbeam using proton-induced x-ray emission (PIXE) of characteristic titanium (K(α) 4.5 keV) as the x-ray source has been developed at the Radiological Research Accelerator Facility (RARAF) at Columbia University. The proton...
Apparent Linear Attenuation Coefficients in Phase Contrast X-Ray Tomography [0.03%]
基于相位信息的X射线断层扫描中的等效线性衰减系数研究
Aimin Yan,Xizeng Wu
Aimin Yan
In the inline phase contrast x-ray tomography the reconstructed apparent linear attenuation coefficient values may be greatly larger than sample's linear attenuation coefficients or even be negative. In this work we present a general formul...
Free flow electrophoresis separation and AMS quantitation of C-naphthalene-protein adducts [0.03%]
自由流电泳分离及AMS定量检测蛋白与萘的结合物
Bruce A Buchholz,Kurt W Haack,Jennifer L Sporty et al.
Bruce A Buchholz et al.
Naphthalene is a volatile aromatic hydrocarbon to which humans are exposed from a variety of sources including mobile air sources and cigarette smoke. Naphthalene produces dose- (concentration) dependent injury to airway epithelial cells of...
Daniel Murnick,Ozgur Dogru,Erhan Ilkmen
Daniel Murnick
A new ultra sensitive laser-based analytical technique, intracavity optogalvanic spectroscopy (ICOGS), allowing extremely high sensitivity for detection of (14)C-labeled carbon dioxide has recently been demonstrated. Capable of replacing ac...
Method for evaluating the potential of C labeled plant polyphenols to cross the blood-brain barrier using accelerator mass spectrometry [0.03%]
一种利用加速器质谱测定法评估植物多酚潜在的穿越血脑屏障方法及其潜力的方法
Elsa M Janle,Mary Ann Lila,Michael Grannan et al.
Elsa M Janle et al.
Bioactive compounds in botanicals may be beneficial in preventing age-related neurodegenerative diseases, but for many compounds conventional methods may be inadequate to detect if these compounds cross the blood brain barrier or to track t...
Rosa G Liberman,Paul L Skipper,Steven R Tannenbaum
Rosa G Liberman
The Biological Engineering Accelerator Mass Spectrometry (BEAMS) Lab at the Massachusetts Institute of Technology is a facility dedicated to incorporating AMS into life sciences research. As such, it is focused exclusively on radiocarbon an...
Jennifer Links,Magnus Palmblad,Ted Ognibene et al.
Jennifer Links et al.
Biological radioisotope studies suffer from a lack of sensitive measurement techniques and therefore traditionally require large amounts of labeled material to produce a measurable signal. Such quantities of materials are often significantl...
H-tetracycline as a proxy for Ca for measuring dietary perturbations of bone resorption [0.03%]
用H-四环素作为钙的替代物来衡量饮食对骨吸收的影响
Connie Weaver,Jennifer Cheong,George Jackson et al.
Connie Weaver et al.
Our group is interested in evaluating early effects of dietary interventions on bone loss. Postmenopausal women lose bone following reduction in estrogen which leads to increased risk of fracture. Traditional means of monitoring bone loss a...