Search

1.The specific monolayer volumes of Kr and CF4 have been determined by the gas-pulse method for activated carbons with different micropore structures.2.A linear approximation of the initial segment of the TVFM isotherm makes it possible to determine the limiting volume of adsorption space W0 of activated carbons from data obtained by the gas-pulse method.

The metabolic products produced by several strains of Clostridium septicum obtained from patients and animals, along with strains of Clostridium chauvoei, were studied in chopped meat glucose medium by electron capture gas-liquid chromatography (EC-GLC). The strains of C. septicum and C. chauvoei were shown to comprise five different metabolic groups. Both the EC-GLC study and the O and H antigenic study performed previously showed that strains of C. septicum comprise a heterogeneous group. One type of metabolic profile was found only in strains of C. chauvoei. The O antigen types and EC-GLC metabolic types of C. septicum correlated fairly well in isolates from cancer patients but not in stock culture and animal isolates.

Laboratory water window cryomicroscopy has recently demonstrated similar image quality as synchrotron-based microscopy but still with much longer exposure times, prohibiting the spread to a wider scientific community. Here we demonstrate high-resolution laboratory water window imaging of cryofrozen cells with 10 s range exposure times. The major improvement is the operation of a λ=2.48  nm, 2 kHz liquid nitrogen jet laser plasma source with high spatial and temporal stability at high average brightness >1.5×10^12  ph/(s×sr×μm^2×line), i.e., close to that of early synchrotrons. Thus, this source enables not only biological x-ray microscopy in the home laboratory but potentially other applications previously only accessible at synchrotron facilities.

1.Heats of adsorption of Kr and CF4 on activated carbons, characterized by different micropore structure, were studied by the gas-impulse method over a relatively wide temperature range.2.A correlational dependence in the form of E0=aQ+b (a and b are empirical coefficients) has been established between the heat of adsorption of the chromatographed gases and the specific energy of adsorption, calculated from the adsorption isotherm using benzene as the adsorbate.