Study of the normal fecal bacterial flora of man quarterly progress report, jan. 1 - mar. 31, 1965

Human fecal bacteria isolation and metabolic studies for nutrition in digestive syste

Study of the normal fecal bacterial flora of man quarterly progress report, oct. 1 - dec. 31, 1964

Human fecal bacteria culturing and isolation, and metabolic effects of nutrition in digestive trac

Effect of diet and atmosphere on intestinal and skin flora. Volume II - Literature survey

Literature survey and experimental observations of human skin microflora, including study of men confined in simulated spacecraft environmen

Study of the normal fecal bacterial flora of man

Space flight effect on normal fecal bacterial flora of ma

The Influence of Diet on the Normal Fecal Flora of the Chimpanzee Final Report, Feb. 1964 - Feb. 1965

Diet effect on normal fecal bacteria flora of chimpanze

Mechanism of fragmentation and atomization of molecular ions in gasdynamic transport cell

The fragmentation of molecular ions formed upon the electrospraying of a sample and transported through the gasdynamic system of a mass spectrometer equipped with an IESAP (Ion Extraction from Solution at Atmospheric Pressure) source has been experimentally studied. It is established that ion fragmentation in a Kantorowicz-Gray type cell takes place in the immediate vicinity of a skimmer port, apparently, as a result of collisions between ions (accelerated in an electric field) and stagnant gas. Molecular mechanisms of fragmentation are considered and it is concluded that this process can take place in a single ion-molecule collision even

A specialized isotope mass spectrometer for noninvasive diagnostics of Helicobacter pylori infection in human beings

A specialized isotope mass spectrometer for noninvasive diagnostics of Helicobacter pylori infection in human beings based on the carbon-13 isotope breath test has been designed and constructed. Important stages of the work included (i) calculating a low-aberration mass analyzer, (ii) manufacturing and testing special gas inlet system, and (iii) creating a small-size collector of ions. The proposed instrument ensures 13C/12C isotopic ratio measurement to within 1.7‰ (pro mille) accuracy, which corresponds to requirements for a diagnostic tool. Preliminary medical testing showed that the mass spectrometer is applicable to practical diagnostics. The instrument is also capable of measuring isotopic ratios of other light elements, including N, O, B (for BF2+ ions), Ar, Cl, and

Effect of diet and atmosphere on intestinal and skin flora. Volume I - Experimental data

Microbiological effects of oxygen atmosphere and space diet on human intestinal and skin flor

Effect of diet and atmosphere on intestinal and skin flora. Volume I - Experimental data

Microbiological data of diet and closed ecological atmosphere effects on human intestinal and skin flor