A system for Automatic NAA is based on a list of specific saturation activities determined for one irradiation position at
a given neutron flux and a single detector geometry. Originally compiled from measurements of standard reference materials,
the list may be extended also by the calculation of saturation activities from k0 and Q0 factors, and f and a values of the irradiation position. A systematic improvement of the SRM approach is currently being performed by pseudo-cyclic
activation analysis, to reduce counting errors. From these measurements, the list of saturation activities is recalculated
in an automatic procedure.
illumination provided by two studio softboxes and a photo-box. Images were analyzed for surface color change and possible chilling injury defects by means of RGB (Red, Green, Blue) color components, normalized RGB values, HSL (Hue, Saturation, Luminosity
In this note we make a correction in the paper  by two of the authors. Specifically we modify an auxiliary localization
result and prove that the applications to the saturation theory of some outstanding conservative operators remain valid. Moreover,
we enrich a corollary dealing with the well-known Szsz-Mirakjan operators.
For the hop varieties: Agnus, Harmonie, Premiant and Osvaldův klon 72, the values for the saturation radiance and photosynthetic capacity were determined. Photosynthetic capacity was determined gasometrically. For the varieties Premiant and Osvaldův klon 72 the saturation irradiance was 447 μmol.m
and for the varieties Agnus and Harmonie 499 μmol.m
. The lowest photosynthetic capacity was demonstrated by Osvaldův klon 72 (6.8 μmol CO
) and the highest by Premiant (14.64 μmol CO
). The results obtained supplemented the present knowledge from the area of hop physiology and will expand knowledge about the biological properties of the varieties in question.
Hydroisomerization of n-hexane simultaneously proceeding with benzene saturation over platinum impregnated nano-crystalline zeolite beta (Si/Al = 25)
at 1.0 MPa and 573–673 K was studied. The feed contained 30 wt% benzene. The synthesized catalyst was characterized by various
techniques, e.g., powder X-ray diffraction, IR spectroscopy, thermal analysis, scanning electron microscopy and nitrogen adsorption.
At the operating conditions used, total saturation of benzene with 95% selectivity to cyclohexane (CH) and methylcyclopentane
(MCP) was observed. n-Hexane conversion increased with temperature whether benzene was present or not during the reaction. However, in the presence
of benzene, n-hexane conversions as well as isomer selectivities were observed to be lower. This was attributed to reduced availability
of acid sites by predominating benzene adsorption. Formation of carbenium ion on an acid site is questioned and plausible
mechanism has been suggested.
In order to expand the
experimental data set of models describing the movement of organic liquids
polluting the soils, a series of experiments was set up in which the fluid
aturation curves of the soils) were measured using
water and NAPL (DUNASOL 180/220, a non aromatic petroleum product).
Measurements were carried out on undisturbed soil samples originating from 35
different horizons of 12 characteristic Hungarian soils. The P-S curves with
NAPL were determined in series, by a modified pressure cell apparatus -
designed and constructed in the laboratory of our department - containing
oil-resistant (silicon rubber, Teflon) components. The applied methodology and the statistical
analysis of the measured data are presented. The results show that the commonly
used Leverett-type scaling of the water retention data provides inadequate
estimation of the NAPL retention in some cases. This deviation may be a direct
result of changes in clay volume and soil aggregation when saturation with
different fluids was performed.
According to the analysis, however, with the easily measurable soil
parameters (bulk density, particle size distribution and humus content) a
better estimation of NAPL retention can be given. This estimation method (after
extending the database) can be useful for modelling the fate and migration of
NAPL or mapping the organic contaminant sensitivity of the soils.