نتایج جستجو برای: equilibrium within 12 minutes absorption rate
تعداد نتایج: 2536759 فیلتر نتایج به سال:
BACKGROUND Chronic exposure to musical auditory stimulation has been reported to improve cardiac autonomic regulation. However, it is not clear if music acutely influences it in response to autonomic tests. We evaluated the acute effects of music on heart rate variability (HRV) responses to the postural change maneuver (PCM) in women. METHOD We evaluated 12 healthy women between 18 and 28 yea...
The combination of a photochemical and a thermal equilibrium in overcrowded alkenes, which is the basis for unidirectional rotation of light-driven molecular rotary motors, is analysed in relation to the actual average rotation rates of such structures. Experimental parameters such as temperature, concentration and irradiation intensity could be related directly to the effective rates of rotati...
The rate of absorption of gas from a pneumothorax was studied in 12 patients breathing air and in 10 patients breathing air and a high concentration of oxygen alternately. The mean rate of absorption while breathing air was the same in both groups of patients. In the second group the rate consistently increased during periods of oxygen therapy and decreased again on breathing air. The mean rate...
Using 45Ca, indo1, and quin2, calcium uptake was measured in isolated quiescent adult rat heart cells under different metabolic conditions. Exposure of cells in a medium containing 1 mM CaCl2 to rotenone and uncoupler resulted in adenosine triphosphate (ATP) depletion from 17.08 +/- 2.26 to 0.63 +/- 0.11 nmol/mg within 8 minutes, and the cells went into contracture. In this time, the cells lost...
The interaction of light and matter as we have described from Fermi’s Golden Rule gives the rates of transitions between discrete eigenstates of the material Hamiltonian H0. The frequency dependence to the transition rate is proportional to an absorption spectrum. We also know that interaction with the light field prepares superpositions of the eigenstates of H0, and this leads to the periodic ...
Abstract Background: Wastewater from factories and manufacturing centers because of various compounds, complicates the process of wastewater treatment. Among this industries, the textile, paper pulp, food, pharmacy and leather industry due to consumption of various types of chemicals are the most important importers of color pollutants to environment, which have harmful effects...
Effect of bovine serum albumin (BSA} on the absorption of sulfonamides was studied employing in situ recirculating perfusion method in the rat. The absorption rate constant of sulfamethoxazole was greatly decreased by addition of BSA to the perfusion solution. But, the decreasing effect of BSA on the absorption rate was diminished after removing BSA from perfusion solution. The decreasing effec...
we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...
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