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Ambitious, complex research that leads to breakthrough discoveries requires large-scale, long-term investments. Today, the National Science Foundation (NSF) announces $94 million in funding to support...
The supplementation of livestock feed with animal protein is a present cause for public concern, and plant protein shortages have become increasingly prominent in China. This conflict may be resolved ...
The influence of science in the recognition of the effects of landscape changes on coastal ecosystems and in the development of effective policy for managing and restoring these ecosystems is exami...
The accumulation of independent mutations in two populations of an ancestral species over time often leads to reproductive isolation. Reproductive isolation between diverging populations is re-enforce...
Understanding the movement phenology of the four-toed salamander (Hemidactylium scutatum) is essential to guide management practices. I examined the relationship between environmental variables and th...
The objective of this study was to determine the effect of slaughter season on the fatty acid profile in four types of fat deposits in crossbred (Polish Holstein Friesian Black-and-White×Limousine) be...
Single-molecule experiments provide new insights into biological processes hitherto not accessible by measurements performed on bulk systems. We report on a study of the kinetics of a triple-branch DN...
Four biological candidate genes, natural resistance associated macrophage protein 1 (SLC11A1 or NRAMP), prosaposin (PSAP), interferon Gamma (IFNG), and toll-like receptor 4 (TLR4), were examined to id...
Four Euphorinae and Opiinae (Hymenoptera: Braconidae) parasitoid species, Biosteres (Chilotrichia) arenarius Stelfox, 1959, Opius (Misophthora) bulgaricus Fischer, 1959, O. (Phaedrotoma) umlalaziensis...
STUDIES OF THE MICROPROPAGATION OF FOUR ZANTEDESCHIA CULTIVARS     Micropropagation  Zantedeschia  cultivar       font style='font-size:12px;'> 2009/5/31
Four Zantedeschia cultivars, namely "Golden Calla", "Pixie", "Pink Persusion" and "Black Magic", were used for this study. By ouly changing the oncentration of zeatin in Murashinge and Skoog mineral m...
Because of high growth rate and large deposition of fat in the abdomen, the chicken has been used as a model organism for understanding lipid metabolism, fattening and growing. In this study, differen...
摘要 分析了4个微卫星基因座BM143、OarHH35、OarAE101、BMS2508在7个绵羊群体(小尾寒羊、湖羊、乌珠穆沁羊、萨福克羊、多赛特羊、夏洛来羊、多赛特公羊×小尾寒羊母羊F1代杂种羊)286只绵羊中的遗传多态性。结果表明,这4个微卫星标记在7个绵羊群体中的等位基因数分别为9、11、14和9,其多态信息含量/有效等位基因数/杂合度分别为0.7073/3.7231/0.7314、0....
摘要建立一个复合扩增体系,同时扩增DYS391、GATA-A4、GATA-A10和GATA-H4 4个Y染色体特异性的STR基因座,并用聚丙烯酰胺凝胶电泳和银染显色技术进行基因分型。采用该复合扩增系统调查广东汉族311名无关男性个体的单倍型频率,这4个基因座分别检出5、7、6和5个等位基因,其基因多样性分别为0.4623、0.6972、0.7173、0.6015。共检出98种单倍型,单倍型基因多样...
摘要采用不连续聚丙烯酰胺凝胶电泳技术研究了纵坑切梢小蠹(Tomicus piniperda L.)4个自然种群的9个同工酶基因座。4个种群均在Es-1、Es-2、Es-4、Mdh-1、Mdh-2及AAT-1基因座上存在遗传多态现象。路南长湖、楚雄、蒙自3种群间的遗传距离为0.0036~0.0173, 平均值为0.0105, 表明其遗传结构基本相似。丽江种群与上述3种群之间的遗传距离为0.1421~...
Moths and Other Four-Winged Insects Use Gyroscopic Antennae for Flight Control(图)     Insects  Moths       font style='font-size:12px;'> 2007/2/10
8 February 2007,The moth, a four-winged insect, has sophisticated sensory capabilities on its antennae that serve as a gyroscope to help it navigate while flying, according to new research in the 9 Fe...

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