查询词典 biology

"Natural science research\",\"自然科学研究\",\Includes mathematics, physics, chemistry, biology, agronomics, medicine, geology and astronomy research activities.

"，\"包括数学，物理，化学，生物学，农学，医学，地学，天文学等自然科学的研究活动\

Study of Molecular Biology shows that dioxins express their toxicity by interaction with a kind of receptor protein, which is AhR.

分子生物学研究表明，Dioxins对人体的毒作用主要通过体内的一种受体蛋白——芳烃受体蛋白(aryl hydrocarbonreceptor，AhR)介导表达。

This paper studied the preliminary research of biology characteristics of 8 provenance of the Ailanthus altissima Swingle .

对臭椿的8个种源的种子生物学特性变异进行了初步研究，测定指标包括种子形态、千粒重、净度、含水率、发芽率、发芽势、平均发芽速度和活力指数。

Biology An air-filled sac or structure that aids in the flotation of an aquatic organism.Also called air bladder , air vesicle

气囊：水生动植物器官中用来帮助飘浮用的充满气体的囊或结构也作 air bladder ， air vesicle

The hero of "Anthill" is Raff Cody, an Alabaman youngster who follows up his biology studies with a stint at Harvard law school, with the express purpose of returning equipped to save his beloved patch of forest from rapacious property developers.

蚁丘》的主人公拉夫科迪是一位阿拉巴马州青年，带着准备从贪婪的地产商那里夺回他心爱的森林这一明确目的，他在哈佛大学法学院对生物学的研究坚持不懈、不遗余力。

It can be used for the experiments and analysis in fields of biology, medicine, agriculture and so on, especially in the research for inherit gene, albumen acid.

适用于生物、医药学和农业科学等领域的实验，分析工作，在遗传基因，蛋白核酸等实验研究的使用中效果更为显著。

Center for Craniofacial Molecular Biology, University of Southern California School of Dentistry, 2250 Alcazar Street, CSA 103, Los Angeles, California 90033, USA.

在今年早些时候，Songtao Shi曾在Stem Cells上发表文章，表示间叶干细胞能实现老鼠和猪面部骨骼和皮肤组织的再生。

The new-style and rarefied program that develops recently, like filmy biology reactor , attainable very high quality rarefied water, have alexipharmic action and presence of solid of float of extremelying He Xuan, this may be the method that changes this problem.

最近发展的新型纯化程序，如薄膜生物反应器，可得到非常高品质的纯化水，具消毒作用及无任何悬浮固体存在，这可能为改变此问题的方法。

This review describes the research progress of its bioactive constituents and molecular biology in allium tuberosum .

韭菜是人们十分喜爱的佳蔬，它不仅营养丰富，而且具有多方面的保健功能，如抗菌、抗突变、抗氧化和温肾助阳等。

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物，其基因体资讯提供植物学研究的重要依据；在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时，阿拉伯芥近缘的野生物种自然成了不可或缺的关键；跟阿拉伯芥近缘的物种包括A halleri及A lyrata，其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾，与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽，而A lyrata ssp kamchatica主要分布於东北亚及台湾，与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔，这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构，本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种，两对互为亚种的姊妹群，以阿拉伯芥为外群进行研究，在四个物种完成98个同源基因的分子序列，利用套装软体MCMCcoal来估算祖先物种的遗传变异，亦估算现生物种的核苷酸歧异度，观察到？多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度，显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式，在某些物种配对间邻域种化模式应比异域种化更为可能；在基因树与物种树的比较，98个基因片段的亲缘模式只有28个是与已知物种树一致的，有23个基因其树状图支持{ lyrata} thaliana的型式，藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率，推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。