The partial wave analysis of the reaction
pp → π
+π
−π
0
at rest has been performed for the first time by using high-statistics data sets collected in hydrogen targets at three different densities. ...The different mixtures of partial waves corresponding to our samples allow a reliable determination of each contribution. This technique is crucial in the identification of the exotic candidate
f
2(1565) which can be produced by
1
S
0,
3
P
1 and
3
P
2 initial states. The amplitude analysis was performed in the frame of the
K-Matrix and
P-Vector approach. It requires presence of the exotic candidates
f
0(1500) and
f
2(1565) with the following masses and total widths: (1449 ± 20)MeV, (114 ± 30)MeV and (1507 ± 15)MeV, (130 ± 20)MeV respectively. In addition to
f
0(980),
f
0(1300)
f
2(1270) and ϱ(770), a clear evidence of
I = 1,
J
P
= 1
− signal, which we identify with ϱ(1450), is obtained.
The study of the
K
±
K
miss
0
π
∓
π
+
π
− channel (7016 events), from
pp
annihilations in a gaseous hydrogen target at NTP, with the OBELIX spectrometer at LEAR (CERN), is presented. A spin-parity ...analysis provides evidence for two axial vectors, one in the low
K
Kπ
mass region, the well established
f
1(1285), decaying to
a
0(980)
π, the second, the 1
++ component of the old puzzling
E
l
, the
f
1(1420), decaying mainly to
K
∗
K
, seen for the first time in
pp
annihilation at rest. The analysis confirms the dominant production of the pseudoscalar η(1405), decaying mainly to
(Kπ)
S
K
, and the existence of a second pseudoscalar in the same mass region, the η(1460), decaying mainly to
K
∗
K
.
Complex study of the gastric acid-producing activity, the condition of the gastroduodenal mucosa, and the serum gastrin concentration in 80 patients with obstructive jaundice showed that the ...appearance of acute erosive-ulcerative injuries of the mucosa of the gastroduodenal zone depended on the increase of activity of the peptic factor of the gastric medium. Peptic complications occurred in 27.1% of patients with initial normo and hyperacidity and a high level of blood gastrin. The absence of bile in the duodenum (obstructive jaundice, by-pass biliodigestive anastomoses) stimulated the peptic factor. This is evidently linked with secretin deficiency (absence of the effect of bile on the secretin producing S-cells) leading to weakened inhibiting effect of secretin on the serum gastrin content, which results in hypergastrinemia and hyperacidity.
Examination of healthy men and those suffering from nonspecific pulmonary diseases has shown that respiratory moisture loss is induced by situation and While "lifting" examinees in the altitude ...chamber 5000 m upwards intensity of the moisture loss increases to 158%. Essential individual variations of the response are shown. Pulmonary diseases (chronic bronchitis, pneumonia, lecithin synthesis disturbances) make the moisture loss higher. It is concluded that lung surfactants participate in regulation of the respiratory moisture loss. participate in regulation of the respiratory moisture loss.
Tocopherol deficiency in the rat organism stimulates activation of lipid peroxidation: the content of hydroperoxides in blood and surfactants of lungs tends to increase, the superweak glow of ...surfactant lipids enhances. In this case the surface activity of lung surfactants is lower than in the control. It also gets lower in hypervitaminosis rats. The data obtained may be used for development of approaches to the tocopherol (antioxidant) correlation of the lung surfactant system functioning.
Surface activity, biochemical composition and morphology of the rat lungs were studied in norm, under effect of acute hypoxia and after infusion of obsidan (1 mg/100g). The data permit suggesting ...that under the influence of obsidan and hypoxia a stability index of surfactants and quantity of phospholipids decreased, while the quantity of lysophosphatidylcholine and lysophosphatidylethanolamine increased. Morphology studies show that after hypoxia and obsidan infusion oedema and cell destruction developed in the lung. The inhalation of exogenous surfactant increased stability index and quantity of phospholipids, decreased the quantity of lysophospholipids but did not eliminate morphological disorders in the lung induced by hypoxia and obsidan infusion.
The experiments were performed on Wistar rats with weight of 150-200 g. Antibodies were prepared by immunization of rabbits with pure surfactants of rat lungs and were intravenously injected into ...rats three times within 3 days intervals. These antibodies were shown to influence the superficial activity of lung surfactants and the alveolar lung cells activity. The low doses of antibodies (0.06 micrograms of protein per 100 g of body mass) stimulated the superficial activity of lung surfactants, while higher doses (3 mg of protein per 100 g of body mass) inhibited it.
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