A quadrupole gas analyzer system was calibrated for the gases H2, He, N2, 02, A, and Xe. The procedure involved first calibrating the system for argon, as the reference gas. This was done using conventional techniques. A mixture of the above gases was then introduced into the system to be calibrated. The system configuration was such that the ratio of the partial pressures of each of the test g...

BACKGROUND The effect of digoxin administration on the serum concentration of the cardiac troponin I (cTnI) has not been reported to date in equidae. This study was therefore designed to evaluate the effect of digoxin on cardiac cell damage in donkeys (Equus asinus) as assessed by cTnI, acid-base and electrolyte balance and haematobiochemical profiles. Ten clinically healthy donkeys were given ...

Comparisons have been made in the open chest dog of the oxygen usage of the left ventricle whose external work has been reduced to zero by 4 different procedures. The average oxygen usage of the left myocardium/100 Gm./min. is about 2.0 cc. in complete arrest with vagal stimulation or with intracoronary potassium injection; 3.8 cc. in fibrillation; and 3.4 cc. in the empty but beating heart. Th...

Turbulence in the surfzone mixes momentum vertically, transmits stress to the sea bed, influences the structure of the crossand alongshore currents, and controls the suspension of sediment from the sea bed. In many coastal and shelf environments, the sea-bed is the primary source of tur­ bulence due to bottom induced shear. In the surfzone, the breaking-wave generated turbulence dominates over ...

We report on a generalmechanism for photo-induced phase transitions. The process relies on the photo-injection of hot electrons from an adjacent metallic layer to trigger the structural dynamics of the materials of interest. This mechanism is demonstrated for the semiconductor-to-metal phase transition of VO2 using a 20 nm Au injection layer. The nature of the phase transition is demonstrated b...

Hydrogen-etching technology was used to prepare TiO2−x nanoribbons with abundant stable surface oxygen vacancies. Compared with traditional Au-TiO2, gold supported on hydrogen-etched TiO2−x nanoribbons had been proven to be efficient and stable water–gas shift (WGS) catalysts. The disorder layer and abundant stable surface oxygen vacancies of hydrogen-etched TiO2−x nanoribbons lead to higher mi...

Findings regarding blood glucose level (BGL) on exposure to hyperbaric oxygen (HBO) are contradictory. We investigated the influence of HBO on BGL, and of BGL on latency to central nervous system oxygen toxicity (CNS-OT). The study was conducted on five groups of rats: Group 1, exposure to oxygen at 2.5 atmospheres absolute (ATA), 90 min/day for 7 days; Group 2, exposure to oxygen once a week f...

A continuous supply of oxygen to tissues is vital to life and interruptions in its delivery are poorly tolerated. The treatment of low-blood oxygen tensions requires restoration of functional airways and lungs. Unfortunately, severe oxygen deprivation carries a high mortality rate and can make otherwise-survivable illnesses unsurvivable. Thus, an effective and rapid treatment for hypoxemia woul...

As the impacts of global warming have become increasingly severe, oxy-fuel combustion has been widely considered a promising solution for carbon capture and storage (CCS) to reduce dioxide (CO2) achieve net-zero emissions. In past few decades, researchers around world demonstrated improvements by application internal (IC) engines. This article presents comprehensive review experimental simulati...