نتایج جستجو برای: pon
تعداد نتایج: 1631 فیلتر نتایج به سال:
The human paraoxonase-1 (PON-1) is a serum high-density lipoprotein-associated phosphotriesterase secreted mainly by the liver. This enzyme is able to hydrolyze toxic organophosphate xenobiotics, endogenous oxidized phospholipids, and homocysteine thiolactone. Physiologically, it is thought to protect against cardiovascular diseases. The level of PON-1 gene expression is a major determinant of ...
An alteration in the oxidation/reduction (redox) status of humans infected with virus infections may contrioute to tefl pariiogeiiesin anu ciniiua1 manifestations of the disease. Alterations in redox markers begin prior to the onset of clinical symptoms, suggesting early changes in the oxidant/antioxidant balance. Early identification of redox markers may be of clinical usefulness in the manage...
Objective: The present analysis deals with the effects of ellagic acid treatment and biochemical and histopathological alterations in mice with NaF-induced experimental chronic fluorosis. Materials and Methods: Treatments were carried out on male 28 Swiss albino mice divided into 4 equal groups for 8 weeks. Group I (control) was not applied experimental operation. Group II received subcutaneous...
Short-term feeding (up to 7 days) of an atherogenic diet to C57BL/6 low density lipoprotein receptor-deficient mice did not result in decreased hepatic paraoxonase (PON) mRNA but caused a dramatic decrease in plasma PON activity and mass. The decreased activity and mass were temporally related to an increase in plasma and high density lipoprotein (HDL) lipid hydroperoxides and to a decrease in ...
This paper studies and designs a symmetric 160 Gb/s and improves the capacity of time and wavelength-division multiplexed passive optical network (TWDM-PON) for nextgeneration passive optical network stage 2 (NG-PON2). Distributed feedback (DFB) laser diode and tunable modulated grating Y-branch (MG-Y) laser with tuning range about 14.4 are used for downstream and upstream direction respectivel...
In Wavelength Division Multiplexing based Passive Optical Network (WDM-PON), multiple wavelength used to separate Optical Network Unit (ONU). Which actually increase the capacity of PON . WDM process can be dense and ultra-dense depending on channel spacing. In this paper we compare performance of Array Waveguide Grating Demultiplexer (AWG DEMUX) and Fiber Bragg Grating based Demultiplexer (FBG...
We demonstrate a long-reach wavelength-division-multiplexed passive optical network (WDM PON) operating at the symmetric rate of 10.3 Gb/s. For the cost-effectiveness, we realize the upstream transmission by utilizing directly-modulated TO-can packaged reflective semiconductor optical amplifiers (RSOAs) and digital coherent receivers. In addition, to overcome the limited modulation bandwidth of...
This study examined the response properties of luminance neurons found within the pretectal olivary nucleus (PON), which is the pretectal nucleus that mediates the primate pupillary light reflex. We recorded the activity of 121 single units in alert, behaving rhesus monkeys trained to fixate a back-projected laser spot while a luminance stimulus was presented. The change in the firing rate of l...
This study examined the response properties of luminance neurons found within the pretectal olivary nucleus (PON), which is the pretectal nucleus that mediates the primate pupillary light reflex. We recorded the activity of 121 single-units in alert, behaving rhesus monkeys trained to fixate a back-projected laser spot while a luminance stimulus was presented. The change in the firing rate of l...
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