Changes in ventilatory capacity during the work shift were studied in workers exposed to tea dust in tea-packing plants, wood dust in two furniture factories, and virtually no dust in an inoperational power station. The FEV1 and FVC in workers exposed to dust were found to decline during the work shift by a small but significant volume. The MMFR, Vmax 50% and Vmax 75% were to variable to displa...

Nicotinamide-(S-methylmercury-thioinosine) dinucleotide was formed by reaction of nicotinamide-(6-thiopurine) dinucleotide with methylmercury chloride. The compound exhibits coenzyme properties in the test with LDH (Km=1.5 X 10(-4) M, Vmax=12500) and LADH (Km=1.7 X 10(-4) M, Vmax=27) and inactivates YADH and GAPDH. From incubations with LDH and LADH the mercury containing coenzyme could be reg...

We compared the modes of action of human pancreatic, human salivary, and porcine pancreatic amylases on Cibachron Blue F3GA-amylose. Both human enzymes showed similar catalytic activity with almost equal Vmax but dissimilar apparent Km's. The ratios of soluble dyed oligosaccharides to reducing substances were identical. Porcine pancreatic amylase exhibited less than half the Vmax of the human e...

Purified perigranular and plasma membranes isolated from rat peritoneal mast cells were examined for Ca2+- and Mg2+-dependent ATPase activity. Isolated perigranular membranes contained only a low-affinity Ca2+- or Mg2+-dependent ATPase (Km greater than 0.5 mM). The plasma membranes contained both a low-affinity Ca2+- or Mg2+-dependent ATPase (Km = 0.4 mM, Vmax. = 20 nmol of Pi/min per mg), as w...

We report evidence from the 3B Catalogue that short (T90 < 10 s) and long (T90 > 10 s) GRB represent different populations and processes: Their spectral behavior is qualitatively different, with short bursts harder in the BATSE range, but chiefly long bursts detected at higher photon energies; 〈V/Vmax〉 = 0.385 ± 0.019 for short GRB but 〈V/Vmax〉 = 0.282 ± 0.014 for long GRB, differing by 0.103 ±...

Background While the hereditary component of asthma has been established, its influence on early respiratory function changes in otherwise healthy offspring remains to be explored. Dynamic lung tests assess airflow and out lungs, providing valuable insights into health detecting potential limitations. This study aimed compare dynamic functions between asthmatic non-asthmatic parents. Methodolog...

In order to increase the diagnostic value of ultrasound diagnostics, qualitative and quantitative Doppler indicators in detection bulky ovarian tumors were determined. A comprehensive examination 149 patients with additional tumors, which consisted three groups patients. The control group included 30 women who did not have large tumors. Detailed assessment blood flow loci was determined using e...

We use analytical methods to investigate cellular automata for traffic flow. Two different mean-field approaches are presented, which we call site-oriented and car-oriented, respectively. The car-oriented mean-field theory yields the exact fundamental diagram for the model with maximum velocity vmax = 1 whereas in the site-oriented approach one has to take into account correlations between near...

We consider a system of particles subjected to a uniform external force E and undergoing random collisions with “virtual” fixed obstacles, as in the Drude model of conductivity [1]. The system is maintained in a nonequilibrium stationary state by a Gaussian thermostat. In a suitable limit the system is described by a self consistent Boltzmann equation for the one particle distribution function ...