查询词典 populations

Kdr resistance and determination of frequences of kdr gene in house fly field population L1014F is the most common amino acid substitution in the kdr allele. The frequency of the L1014F kdr allele was determined by the method of PASA in fourteen field populations of houseflies with resistance factors at LD〓 for pyrethrin/ piperonyl butoxide and bioresmethrin/piperonyl butoxide from 4 to 29 and 2 to 98, respectively.

击倒抗性及kdr基因频率在家蝇野生种群中的检测 L1014F是击倒抗性等位基因最常见的突变位点。14个家蝇种群对除虫菊酯／胡椒基丁醚和苄呋菊酯／胡椒基丁醚的LD〓抗性倍数分别为4到29和2至98。

Eleven of the populations were in Hardy-Weinberg equilibrium, whereas two strains had higher number of heterozygotes than expected, indicating a possible heterozygote advantage. The frequency of kdr was strongly correlated with the reduced mortality observed in the bioassays when treated with pyrethrum and bioresmethrin synergized by piperonyl butoxide.

Kdr基因频率与一定农药选择压力下的家蝇死亡率成反比，显示kdr是家蝇拟除虫菊酯抗性的主要因素。14个野生家蝇种群中，有5个种群对PYR／pho和BRM／pbo的抗性指数分别大于25和10，属高抗性家蝇种群。

Influences of extreme climatic events on safety of wildlife populations in Ningxia province were surveyed by questionnaires and the sample quadrat method.

通过问卷调查和样地调查方法，分析极端天气气候对宁夏野生动物种群安全产生的影响。

Measurement of certain metabolic parameters may also be used to quantitate bacterial populations.

一些代谢参数的测量可以用来计数细菌的群体量。

Meanwhile, in India and China, the rich are racking up huge gains, in both wealth and populations.

与此同时，在印度和中国，财富的规模和有钱人的数量都在大幅增长。

Among 94 varieties evaluated for disease resistance only one of Rambler populations was immune.

在参试的94个品种或群体中，仅润布勒杂花苜蓿的一个群体表现为免疫。

Based on the dataset of 52 plots investigated from the field,the interspecific relationship among 31 dominant populations of the communities of abandoned land in Guandi Mountains,Shanxi was studied by using χ^2 test for 2 × 2 contingency tables,Pearson＇s correlation coefficient test and Spearman＇s rank correlation coefficient test, respectively.

根据野外52个样方的调查数据，运用2 2列联表的χ^2检验、Pearson相关系数检验和Spearman秩相关系数检验研究了山西关帝山撂荒地植被31个建群种和优势种种间关联和相关关系。

This study aimed to analyze the morphological and cytological characteristics of Ranunculus cantoniensis within and among populations.

运用居群学的方法，对居群内、居群间的禺毛茛进行了形态及细胞学两方面的性状分析。

The mission of the association is to conserve raptor populations through the scientific study, and appreciation of raptor migration.

该协会的任务是通过科学研究和阐述猛禽的迁徙来保护猛禽种群。

RDS is a flexible and versatile sampling, which is fit for sampling hidden populations.

同伴推动抽样是一种灵活的、应用广泛的抽样方法，适合应用于隐蔽人群的抽样研究。

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％。