Fifty patients who presented with angina pectoris were studied to examine the disturbances of regional myocardial perfusion during stress. Each patient underwent 16-point precordial mapping of the ECG during an exercise test, and coronary and left ventricular angiography. Regional myocardial perfusion was assessed using an atrial pacing test and a short-lived radionuclide, krypton-81m. Eleven p...

m. Krypton laser photocoagulat on has been demonstrated to be efficient in the treatment of juxtafoveal well-defined choroidal new vessels in AMD. The efficacy of two different wavelengths frequency doubled Nd-Yag Laser (FDYL) and krypton red (KR) was compared in the treatment of extrafoveal and juxtafoveal well-defined choroidal neovascularization (CNV) secondary to A.M.D. &$,&Q&. 38 eyes were...

We report the results of (N,ρ,T) Molecular-Dynamics computer simulations of krypton-argon mixtures physisorbed between two graphite sheets. Three novel aspects of the system's behavior emerge from this study. To begin with, new high-temperature commensurate solid phases for both argon and krypton as a result of confinement are predicted, as well as a family of confinement-induced solid-liquid p...

m. Krypton laser photocoagulat on has been demonstrated to be efficient in the treatment of juxtafoveal well-defined choroidal new vessels in AMD. The efficacy of two different wavelengths frequency doubled Nd-Yag Laser (FDYL) and krypton red (KR) was compared in the treatment of extrafoveal and juxtafoveal well-defined choroidal neovascularization (CNV) secondary to A.M.D. &$,&Q&. 38 eyes were...

m. Krypton laser photocoagulat on has been demonstrated to be efficient in the treatment of juxtafoveal well-defined choroidal new vessels in AMD. The efficacy of two different wavelengths frequency doubled Nd-Yag Laser (FDYL) and krypton red (KR) was compared in the treatment of extrafoveal and juxtafoveal well-defined choroidal neovascularization (CNV) secondary to A.M.D. &$,&Q&. 38 eyes were...

m. Krypton laser photocoagulat on has been demonstrated to be efficient in the treatment of juxtafoveal well-defined choroidal new vessels in AMD. The efficacy of two different wavelengths frequency doubled Nd-Yag Laser (FDYL) and krypton red (KR) was compared in the treatment of extrafoveal and juxtafoveal well-defined choroidal neovascularization (CNV) secondary to A.M.D. &$,&Q&. 38 eyes were...

The validity of the inert gas clearance method for measuring choroidal blood flow has recently been demonstrated by studying the diffusion of krypton in ocular tissue. In this study the diffusion coefficients of krypton in rabbit ocular tissue were calculated from measurements of the diffusion coefficients of xenon. The mean values for the diffusion coefficients of krypton obtained in this stud...

Laser manipulation of neutral atoms has been used to count individual krypton-85 and krypton-81 atoms present in a natural krypton gas sample with isotopic abundances in the range of 10(-11) and 10(-13), respectively. This method of isotope trace analysis is free of contamination from other isotopes and elements and can be applied to several different isotope tracers for a wide range of applica...

Histologic study of lesions produced by krypton red (647.1 nm) and krypton yellow (568.2 nm) laser lights reported here suggests advantages in alternating these two wavelengths in photocoagulation. Selection of the best wavelength to be used in a given location on the retina should result from pre-determined absorbance conditions in that location. The feasibility of the relative measurement of ...

This paper introduces the krypton sampling and extraction facilities currently developed at the Centre for Science and Peace Research to collect and extract the krypton content from small air samples. The extraction unit able to isolate the krypton in small ambient air samples with high speed and high efficiency using a combination of cryogenic distillation and gas chromatography. Air samples a...