نتایج جستجو برای: neutral red nr
تعداد نتایج: 238956 فیلتر نتایج به سال:
تحقیق فعلی با هدف اثر سمی نانونقره بر گلبول قرمز خون و بافت کبد ماهی کپورمعمولی (Cyprinus carpio)مورد بررسی قرار گرفت. در این تحقیق از نانونقره با اندازه های 10-50 نانومتر و با غلظت های 10، 25، 50 و100 میکروگرم بر لیتر استفاده شد. در روش Neutral Red Retention Assay (NRR)، تغییرات سلولی با استفاده از میکروسکوپ نوری در فواصل زمانی 15، 30، 60، 90، 120، 150 و180 دقیقه پس از افزو...
The inflammatory profile of circulating monocytes is an important biomarker for atherosclerotic plaque vulnerability. Recent research revealed that peripheral lipid uptake by monocytes alters their phenotype toward an inflammatory state and this coincides with an increased lipid droplet (LD) content. Determination of lipid content of circulating monocytes is, however, not very well established....
The acridine orange (AO) and neutral red (NR) dyes, commonly used as probes to measure the internal pH in acidic vesicles, are compared in this article. The comparison between the two dyes (arising from calculations taking into account their analytical constants) illustrated that the use of AO is preferential to that of NR because the AO response is sensitive over the whole pH range between 4.0...
The cytotoxicities of chemicals used in household products were evaluated using a neutral red (NR) uptake assay. The chemicals tested during 1997-2004 were rubber additives (accelerators, antioxidants and retarders), solvents, plasticizers and biocides, such as antimicrobials, fungicides, preservatives used in paints, paper, wood and plastic products. The cytotoxicity potential of each chemical...
We have developed a selective upconversion switching method for the ratiometric fluorescence detection of nitrite using upconversion nanoparticles (UCNPs) and an efficient nitrite reaction. The green emission (λ(em) = 539 nm) of NaYF4:Yb(3+),Er(3+) nanoparticles can be selectively quenched by the neutral red (NR) dye due to the spectral overlap between the emission at 539 nm and the absorption ...
Neutral red (NR) is a dye that must be actively imported into the cell, and, therefore, the dye has been used for decades to selectively stain living cells. In addition, NR can also be incorporated into virus particles, although the mechanism behind this is poorly understood. Once encapsulated into the virion, NR, a light sensitive dye, can be photoactivated to inactivate the virus. The propose...
از روش های Mark-Release-Recapture به منظور تعیین قلمروی جستجوگری کلنی موریانهها و ارزیابی جمعیت موریانههای جستجوگر استفاده میشود. در این تحقیق، علامتگذاری موریانهها با استفاده از دو رنگ(NB) Nile Blueو(NR) Neutral Red به منظور تعیین غلظت های مناسب از این دو رنگ که درکوتاهترین زمان ممکن باعث رنگ شدن موریا نهها شوند، انجام شد. تیمارها شامل 3 غلظت 1/0، 25/0 و 5/0 درصد از هر یک از رنگهای...
The interaction between isatin-β-thiosemicarbazone (IBT) and calf thymus DNA (CT-DNA) was investigated in physiological buffer (pH 7.4) using Neutral Red (NR) dye as a spectral probe by UV-Vis absorption and fluorescence spectroscopy, as well as viscosity measurements. The IBT is stabilized by intercalation in the DNA (K [IBT -DNA] = 1.03×10(5) M(-1)), and displaces the NR dye from the NR-DNA co...
there is evidence indicating that pomegranate juice contains many of the essential properties necessary to retain cell viability and cell proliferation. these properties indicate that pomegranate juice is a suitable storage medium for avulsed teeth. however, this idea has not yet been tested. in this study, the capacity of pomegranate juice (pj) as a storage medium for retaining avulsed teeth w...
This paper reports on synthesis of a magnetic adsorbent for wastewater treatment purposes. In this regard, platanus orientalis waste leaves were chosen as a cheap material for preparing the magnetic adsorbent by loading magnetite nanoparticles on it. The synthesized adsorbent was characterized using scanning electron microscope and X-ray diffractometer. Then, it was used for magnetic solid phas...
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