Explore the different kinds of stars that populate the cosmos, from red giants to white dwarfs. See telescopic images of stars and learn about their features and evolution.
The galaxy's center is a storm of stars in varying stages of formation and demise, absorbing and releasing enormous amounts of energy. A supermassive black hole forms its center, nearly 4 million times more massive than the sun [source: NASA]. Two major spiral arms, Scutum-Centaurus and ...
hopper instarsfecundityhost plantsThe influence of diet on different parameters of the life cycle in a pest grasshopper is evaluated. The effect of crowding and temperature on growth of larval stages under the classical model of Dyar is also tested. Brassica oleracea var. botrytis was most ...
Spring, summer, fall and winter–the seasons on Earth change every few months, around the same time every year. It’s easy to take this cycle for granted here on Earth, but not every planet has a regular change in seasons. So why does Earth have regular seasons when other planets don’...
Previous surveys have shown that adult workers of the Asian honey bee Apis cerana harbor four major gut microbes (Bifidobacterium, Snodgrassella alvi, Gilliamella apicola, and Lactobacillus). Using quantitative PCR we characterized gut bacterial communities across the life cycle of A. cerana from larv...
Brother Dawn (Cooper Carter), Brother Day (Lee Pace), and Brother Dusk (Terrence Mann) are genetic clones of Emperor Cleon at three different stages in his life cycle. Emperor Cleon does show up in the prequels to Foundation (albeit not in "The Psychohistorians" or Foundation itself), ...
Effect of an organophosphorus insecticide, Fenitrothion, on survival, osmoregulation, and acetylcholinesterase activity in different life stages of two pen... The acute toxicity of fenitrothion was studied in seawater (36 PSU 1060 ± 10 mosmkg-1) in larval, postlarval, and juvenile instars of the...
athan upon later stages in the family life cycle. 比在后期阶段在家庭生命周期。[translate] aNondeductible consumption tax Nondeductible消费税[translate] aNostro Account No.: 953534500 Nostro帐户没有。: 953534500[translate] aany third party requirements separately applied as a condition of the Listing...
During the early stages of the infection the first contribution of the immune response comes from innate immunity which reduces viral spread and facilitates an adaptive immune response. Adaptive immunity is made of two components, cell-mediated immunity (CD4+ and CD8+ T cells) and humoral immunity...
In addition, levels of relatedness among ticks within nest boxes should be high. Nevertheless, even limited dispersal opportu- nities were expected to lead to genetic differentiation among different tick instars within nest boxes, because they are different generations (cohorts) that may disperse ...