نتایج جستجو برای: o2 depletion
تعداد نتایج: 87470 فیلتر نتایج به سال:
background and objectives: edible parts of pomegranate fruits are a rich source of bioactive compounds. the present research examines the effect of modified atmosphere packaging on the fruit physico-chemical and microbial properties of two commercial pomegranate cultivars grown in iran. materials and methods: the arils were packaged and stored under four different atmospheres. all of the packag...
این پروژه جذب مولکول های h2 و o2 بر روی نانو خوشه های دوفلزی غیر مسطح pt2au3 و pt3au2 بطور نظری مطالعه و بررسی شد. نتایج نشان داد که جذب این مولکول ها در بعضی از ساختارها بسیار قوی بوده ( kcal/mol78/208- ) بطوری که پیوند کوالانسی مولکول های h2 و o2 شکسته شده و بصورت اتمی جذب شده اند. در سایر خوشه ها جذب ضعیف بوده (kcal/mol80/0- ) که در دمای معمولی عملا جذب صورت نمی گیرد. نتایج تحلیل nbo نشان دا...
Li−O2 batteries provide high-capacity energy storage, but for aprotic Li−O2 batteries, it is reported that the charge−discharge efficiency is ultimately limited by the crystal growth of insoluble Li2O2 on the porous cathode. Catalysts have been reported to improve the nucleation and morphology of Li2O2, which helps achieve high energy densities. We provide a new insight into the catalytic mecha...
Abstract Background: Knee osteoarthritis (KOA) is one of the most common diseases in the world that not only has surgical treatment, but also numerous medical drug treatments. The object of this study is to assess the effect of two medical treatments with use of mixture of oxygen-ozone and hyaluronic acid on pain and disability of patients with KOA. Materials and methods: In a randomized clinic...
This paper presents the results of an experiment on effect cold plasma (He+O2 or He+Air) pre-sowing stimulation seeds Wolska cultivar onion process their germination. Four groups characterized by different exposure times (60, 120, 240 and 480 s) were used. Untreated used as a control. The distance between electrode tested material was 50 mm. Pre-sowing improved germination parameters such capac...
The purpose of the present study is to examine the effects of ego depletion on arousal of elite Iranian swimmers. The sample comprised elite swimmers invited to the national swimming team as focused and semi focused (36 subjects). The research design was as pre- and post-test—in two phases of ego depletion conditions and the lack of ego depletion conditions in two experimental and control...
Timing and duration of ore deposit formation are crucial to understanding the mineralization process. To address this, geochronological (U-Th)/He method, geochemical H- O-isotope compositions pure goethite formed in Imini karst-hosted Mn district (High Atlas, Morocco) were examined detail. Two main generations cavity-filling fracture-filling identified, both precipitated prior massive oxide ore...
Oxygen demand in river substrates providing important habitats for the early life stages of aquatic ecology, including lithophilous fish, can arise due to the oxidation of sediment-associated organic matter. Oxygen depletion associated with this component of river biogeochemical cycling, will, in part, depend on the sources of such material. A reconnaissance survey was therefore undertaken to a...
Salad savoy (Brassica oleracea L.) is a vegetable crop that is becoming a valued addition to fresh-cut salad mixes. This study was conducted to develop a modified atmosphere packaging system for fresh-cut salad savoy and to evaluate the effect of film oxygen transmission rate (OTR) on package atmospheres, and consequently product quality changes during storage. Two varieties of salad savoy (whi...
Loss of mitochondrial function is a fundamental determinant of cell injury and death. In heart cells under metabolic stress, we have previously described how the abrupt collapse or oscillation of the mitochondrial energy state is synchronized across the mitochondrial network by local interactions dependent upon reactive oxygen species (ROS). Here, we develop a mathematical model of ROS-induced ...
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