نتایج جستجو برای: light stability
تعداد نتایج: 686950 فیلتر نتایج به سال:
The nanoDSF (minituarized differential scanning fluorimetry) technology is a powerful method to determine the thermal and chemical stability of proteins by following changes in fluorescence, where the amino acid tryptophan serves as the main source for the fluorescence signal. We analyzed the stability of the light-oxygenvoltage (LOV) protein of the marine phototrophic α-proteobacterium Dinoros...
The quality and stability of industrially processed palm, sunflower and cotton oils as affected by light and air were investigated. The oils exposed to light, air and both light and air were analyzed for physicochemical properties of acid value, free fatty acids and peroxide value over a period of four consecutive days. Determination of the acid values (AV), free fatty acids (FFA) and peroxide ...
OBJECTIVE Physical activity is positively related to improved student behaviors. Stability balls have been used as interventions to affect student behavior. The objective of this study was to determine whether the use of stability balls elicits more physical activity than the use of regular chairs and whether stability balls positively influence behavior. METHOD Participants (n = 43 fourth gr...
Nanostructured MnO(2) exhibits a high turnover frequency for oxygen evolution under visible light and high stability in strong acidic conditions.
Resistance to aspirin and its cytotoxicity significantly limits its therapeutic applications. Nano-liposomal encapsulation of aspirin can reduce its cytotoxicity. In this study, aspirin encapsulated nano-liposomes (AS-NL) was prepared and its performance in drug delivery and cytotoxicity was evaluated. The effects of two independent variables including: number of freeze/thawing cycles and conce...
Resistance to aspirin and its cytotoxicity significantly limits its therapeutic applications. Nano-liposomal encapsulation of aspirin can reduce its cytotoxicity. In this study, aspirin encapsulated nano-liposomes (AS-NL) was prepared and its performance in drug delivery and cytotoxicity was evaluated. The effects of two independent variables including: number of freeze/thawing cycles and conce...
BACKGROUND Tazocin, a mixture of piperacillin and tazobactam, has recently been reformulated to include edetate disodium (EDTA) and citric acid. Since the introduction of this new formulation, there have been no studies of stability in polyvinylchloride (PVC) bags. OBJECTIVE To complete a physical compatibility and chemical stability study of the new formulation of Tazocin, prepared at 2 conc...
An interaction form is an abstract model of interaction based on a description of power distribution among agents over alternatives. A solution known as the settlement set is defined at any preference profile. Necessary and sufficient conditions for stability, that is the existence of settlements, are established. A Stability Index that plays a role similar to that of the Nakamura Number is def...
Despite the high efficiency of over 21% reported for emerging thin film perovskite solar cells, one of the key issues prior to their commercial deployment is to attain their long term stability under ambient and outdoor conditions. The instability in perovskite is widely conceived to be humidity induced due to the water solubility of its initial precursors, which leads to decomposition of the p...
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