نتایج جستجو برای: cell size
تعداد نتایج: 2173553 فیلتر نتایج به سال:
A motor protein called Klp10A ensures that germline stem cells in male fruit flies divide to produce two sibling cells that are equal in size.
Cells usually grow to a proper size before they divide. To ensure an optimal size for cell survival and function, it is crucial that cells develop efficient and sensitive mechanisms for cell-size control. in 2009, 2 independent studies proposed that the DyRK-family kinase Pom1 could serve as a cell-length sensor to negatively regulate mitotic entry through sAD-like kinase Cdr2 in fission yeast....
In this study, silver nanoparticles were synthesized using the fungus, Aspergillus fumigatus. The effects of three independent variables including glucose content of culture media, initial pH and initial spore concentration on biosynthesis of silver nanoparticles were investigated. These variables affect cell morphology, cell mass, size and morphology of silver nanoparticles and degree of silv...
Soil loss erosion is one of the most serious environmental problems (widespread globally), which is a menace to sustainable ecosystems and agriculture. As the previous studies show, the world’s highest soil loss rates due to erosion are in three continents, i.e. Asia, Africa, and South America. A new method was proposed to statistically evaluate the most appropriate cell size for LS factor inpu...
Abstract Background: The amniotic membrane has gained much attention in regenerative medicine as a precious cell source. Recently, reparation of three dimensional matrices (scaffold) with appropriate specificity for cell culture, which depends on cell type, has been the subject of many studies .This study aimed to design optimal three-dimensional matrices in order to utilize amniotic epithel...
objective(s): the aim of this study was to determine cytotoxic effect of nanoliposomal form of lyophilized aqueous extract of ecballium elaterium fruit on gastric cell line (ags) using cell viability tests. methods: an aqueous extract of the fruits of ecballium elaterium was prepared. nanoliposomal form was also prepared by thin-film hydration method and stability size was determined by sem. th...
Mean cell size at division is generally constant for specific conditions and cell types, but the mechanisms coupling cell growth and cell cycle control with cell size regulation are poorly understood in intact tissues. Here we show that the continuously dividing fields of cells within the shoot apical meristem of Arabidopsis show dynamic regulation of mean cell size dependent on developmental s...
SYNAPTIC PLASTICITY—THE DYNAMIC MODIFICATION of functional synaptic strength between neurons of the central nervous system—is generally believed to be a physical mechanism underlying learning and memory.An individual neuron in the mammalian CNS may contain up to 10,000 synaptic connections. Furthermore, small groups of synapses can be independently regulated: Synaptic enhancement induced at one...
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید