نتایج جستجو برای: oxygen sensor
تعداد نتایج: 394025 فیلتر نتایج به سال:
Hypoxic vasodilation is a fundamental, highly conserved physiological response that requires oxygen and/or pH sensing coupled to vasodilation. While this process was first characterized more than 80 years ago, the precise identity and mechanism of the oxygen sensor and mediators of vasodilation remain uncertain. In support of a possible role for hemoglobin (Hb) as a sensor and effector of hypox...
The study aims to analyze the effect of heteroatom replacement on benzimidazole derivative chemosensor compounds ability form hydrogen bonds with anions. In this case, N in sensor compound (S1) is replaced O become a benzoxazole (S3). Calculating energy molecules involved electron level gives following results: replacing heteroatoms more electronegative atoms increases HOMO molecules, making re...
Autoregulatory mechanisms that adjust the diameter of a vascular bed and the blood flow through it to the intrinsic parameters of tissue oxygen demand have become a cornerstone of vascular physiology.1–4 Although examples of hypoxia-induced vasoconstriction do exist (such as pulmonary microvasculature), most blood vessels respond to hypoxic or ischemic environment with vasodilation. Coronary ar...
A portable instrument for oxygen determination, based on the quenching of phosphorescent octaethylporphyrin by gaseous O(2), has been developed using the fluorimetric paired emitter-detector diode technique (FPEDD). The instrument configuration consists of two light-emitting diodes (LEDs) facing each other, with an interchangeable support containing a phosphorescent membrane in between, in whic...
We demonstrate an integrated planar Bragg grating sensor for the detection of oxygen by modification of the surface with a silica sol–gel containing immobilized methylene blue.
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