Evidence for ion acceleration by oscillations in the discharge plasma of ion engines

The hollow cathode discharge plasma in ion engines is highly non-uniform, geometrically complex, and confined by a magnetic field; elucidating the mechanisms responsible for producing ions with anomalously high energies observed in the downstream regions of hollow cathodes will contribute to understanding the behavior of complex plasmas. Ions with energies in excess of ten times greater than the energy associated with electrostatic acceleration from the largest steady-state potential difference in the plasma discharge of ion engines have been detected

ICAR: endoscopic skull‐base surgery

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Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

Contains fulltext : 172380.pdf (publisher's version ) (Open Access

Djelovanje eksperimentalnog akutnog otrovanja benzinom (ethyline 78) na cirkulatorni sistem kunića

Studies were performed on the effects of an experimental acute motor-car petrol (ethyl petrol 78) vapour intoxication on the circulatory system in rabbits. Some rabbits were kept for two hours in a specially constructed inhalation chamber in which they inhaled the air containing petrol vapour of an average concentration of 310 mg/l. The recorded electrocardiogram showed a slowed-down heart rate, prolonged QT interval, disturbed repolarization period of the ventricles, and disturbed intraventricular conductivity. The statistically significant decrease in the sodium, potassium and magnesium levels found in the homogenates of the heart proves that the disturbances of the repolarization period of ventricles are due to electrolytic disturbances. Coexistant muscle lesion however cannot be excluded. A decrease in the histochemical activity of alkaline phosphatase in the heart muscle suggests the possibility of disturbances in the active transport. An increase in the ATP-ase reaction in the vessel endothelia of the heart muscle was also observed. A statistically significant decrease in at + a2 globulins in the blood serum and an increase in the acid phosphatase caused most probably by its liberation from the tissue were also found as was a decrease in the activity of acid phosphatase in the heart muscle homogenates.Elektrokardiografsko ispitivanje kunića akutno otrovanih parama benzina pokazalo je ove promjene: usporenje srčane akcije, produženi P-Q interval, poremećenje vremena repolarizacije ventrikula i poremećenje intraventrikularne provodljivosti. U homogeniziranom tkivu srca nađeno je statistički značajno smanjenje natrija, kalija i magnezija. Akutno otrovanje parama benzina uzrokuje sniženje nivoa alfa 1 i alfa 2 globulina u serumu i povećava aktivnost kisele fosfataze. Histokemijske metode pokazale su promjene u aktivnosti kisele fosfataze i ATP-aze u srčanom mišiću

Djelovanje eksperimentalnog akutnog otrovanja benzinom (ethyline 78) na cirkulatorni sistem kunića

Studies were performed on the effects of an experimental acute motor-car petrol (ethyl petrol 78) vapour intoxication on the circulatory system in rabbits. Some rabbits were kept for two hours in a specially constructed inhalation chamber in which they inhaled the air containing petrol vapour of an average concentration of 310 mg/l. The recorded electrocardiogram showed a slowed-down heart rate, prolonged QT interval, disturbed repolarization period of the ventricles, and disturbed intraventricular conductivity. The statistically significant decrease in the sodium, potassium and magnesium levels found in the homogenates of the heart proves that the disturbances of the repolarization period of ventricles are due to electrolytic disturbances. Coexistant muscle lesion however cannot be excluded. A decrease in the histochemical activity of alkaline phosphatase in the heart muscle suggests the possibility of disturbances in the active transport. An increase in the ATP-ase reaction in the vessel endothelia of the heart muscle was also observed. A statistically significant decrease in at + a2 globulins in the blood serum and an increase in the acid phosphatase caused most probably by its liberation from the tissue were also found as was a decrease in the activity of acid phosphatase in the heart muscle homogenates.Elektrokardiografsko ispitivanje kunića akutno otrovanih parama benzina pokazalo je ove promjene: usporenje srčane akcije, produženi P-Q interval, poremećenje vremena repolarizacije ventrikula i poremećenje intraventrikularne provodljivosti. U homogeniziranom tkivu srca nađeno je statistički značajno smanjenje natrija, kalija i magnezija. Akutno otrovanje parama benzina uzrokuje sniženje nivoa alfa 1 i alfa 2 globulina u serumu i povećava aktivnost kisele fosfataze. Histokemijske metode pokazale su promjene u aktivnosti kisele fosfataze i ATP-aze u srčanom mišiću