نتایج جستجو برای: ion accumulation
تعداد نتایج: 351238 فیلتر نتایج به سال:
In polyglutamine diseases, an abnormally elongated polyglutamine results in protein misfolding and accumulation of intracellular aggregates. Autophagy is a major cellular degradative pathway responsible for eliminating unnecessary proteins, including polyglutamine aggregates. Basal autophagy constitutively occurs at low levels in cells for the performance of homeostatic function, but the regula...
Previous studies have shown that salicylates can change the ion permeability of root cells. Therefore the possible effects of exogenous salicylate application on lead (Pb) and copper (Cu) accumulation and its protective role against DNA damage due to metal exposure in Lemna gibba were studied. L. gibba was exposed to 5, 10, and 25 microM Pb and Cu for six days in the presence and absence of sod...
A major portion of the calcium in a soybean root appears to be in less than 10% of the root volume. Specifically, Ca is considered to be almost entirely localized in the epidermal cell layer. This relationship was established from consideration of rates and extent of ion absorption and ion interactions during the absorption process.Presence of calcium at the root-solution interface was associat...
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Under energetic ion bombardment, amorphous materials deform plastically in the form of anisotropic growth. At medium electronic stopping power (5 to 30 keV/nm) this phenomenon starts only after a certain incubation dose depending on values of the electronic stopping power and temperature. This delay is modeled on the basis of the assumption of a drastic irradiation induced viscosity reduction, ...
The aim of this study is to understand the parameters regulating calcium ion distribution in leaves. Accumulation of ions in leaf tissue is in part dependent on import from the xylem. This import via the transpiration stream is more important for ions such as calcium that are xylem but not phloem mobile and cannot therefore be retranslocated. Accumulation of calcium was measured on bulk coriand...
The uneven distribution of Mg2+, K+, and phosphate in Saccharomyces carlsbergensis was demonstrated by the differential extraction of ions. Their concentrations were 5, 60, and 1 mM in the cytoplasm and 73, 470, and 110 mM in vacuoles, respectively. The intracellular gradients of these ions were 1:15, 1:8, and 1:110, respectively, across the tonoplast. The determination of free Mg2+ (1.35 mM in...
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The key aim of this paper is to study the presence effect LiO impurity phases in Li2ZrO3 ceramics on resistance helium swelling and structural degradation during implanted accumulation near-surface layer structure. hypothesis put forward based a number scientific papers, which it was reported that two or more lithium-containing led decrease rate radiation damage gas due additional interfacial b...
Radiation-induced amorphization is one of the concerns with SiC as structural components for next-generation nuclear reactors. Numerous studies have been focused on the amorphization mechanisms under electron, neutron, and ion irradiation. Proposed mechanisms for ion-induced amorphization include nucleation and growth of amorphous regions, direct impact combined with stimulated amorphization at...
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