Now showing items 51-60 of 158
Designing Thermal Modulators for Portable GC x GC Systems.
(2015)
Microelectromechanical systems (MEMS) have the advantage of scale and can be manufactured in bulk. One of the active areas of MEMS research is the development of micro-scale comprehensive two-dimensional gas chromatography ...
The vapor-phase infrared and Raman spectra of p-difluorobenzene (h4) and (d4)
(Elsevier, 1985-04)
This new study of the vapor-phase infrared and Raman spectra of p-difluorobenzene (h4) and (d4) includes assignments from the high-resolution electronic spectrum, from fluorescence spectra, and one assignment from the two ...
Spectroscopic studies of Lewis acid‐base complexes. III: Vibrational frequencies, assignments and normal coordinate analyses for isotopic varieties of phosphine borane and trifluorophosphine borane
(John Wiley & Sons, Ltd., 1974-04)
Vibrational spectra of the two Lewis complexes, phosphine borane, PH 3 BH 3 , and trifluoro‐phosphine borane, PF 3 BH 3 , have been investigated for several isotopic species preserving C 3 v symmetry. New assignments ...
Gastric xenon trapping mimicking COPD: Recognition using an effervescent agent
(Springer-Verlag, 1986-07)
Trapping of xenon 133 in the stomach due to gas swallowing can mimic xenon 133 retention in the left lower lobe due to obstructive lung disease on pulmonary ventilation/perfusion studies. In such cases, ingestion of sodium ...
Preliminary assessment of fluorine-18 fluorodeoxyglucose positron mission tomography in patients with bladder cancer
(Springer-Verlag, 1997-06)
The purpose of this study was to assess the feasibility of imaging of bladder cancer with fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) scanning. We studied 12 patients with histologically proven ...
Autoradiography-based, three-dimensional calculation of dose rate for murine, human-tumor xenografts
(Elsevier, 1993-11)
A Fast Fourier Transform method for calculating the three-dimensional dose rate distribution for murine, human-tumor xenografts is outlined. The required input includes evenly-spaced activity slices which span the tumor. ...
The design and performance of an ion trap storage--reflectron time-of-flight mass spectrometer
(Elsevier, 1994-02-24)
The design and performance of an ion trap storage--reflectron time-of-flight mass spectrometer (IT--RETOF MS) combination have been explored for detection of ions generated from both internal and external ionization sources. ...
Uptake of positron emission tomography tracers in experimental bacterial infections: a comparative biodistribution study of radiolabeled FDG, thymidine, l -methionine, 67 Ga-citrate, and 125 I-HSA
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-04)
The purpose of this study was to evaluate the localization of positron emission tomography (PET) tracers [2-deoxy-2-fluoro- d -glucose (FDG), thymidine, and l -methionine] in sites of bacterial infection, and to contrast ...
Enterobiliary fistulae: A potential cause of a false-negative hepatobiliary study in the diagnosis of acute cholecystitis
(Springer-Verlag, 1985-02)
Cholescintigraphy has gained widespread acceptance in detection of acute cholecystitis (AC). Gallbladder (GB) visualization within 4 h effectively rules out A.C. with a high degree of specificity. We present a case of A.C. ...
Scatter modelling and compensation in emission tomography
(Springer-Verlag, 2004-05)
In nuclear medicine, clinical assessment and diagnosis are generally based on qualitative assessment of the distribution pattern of radiotracers used. In addition, emission tomography (SPECT and PET) imaging methods offer ...