查询词典 population

The population occupationally exposed to benzidine in Shanghai dyestuff industry was divided into several groups based on the surveillance results with Papanicoloaus method,and the proportions of genotypes in each group were compared with that in the control population.

将上海市染料化工行业的联苯胺接触人群按监护的巴氏分级结果分组，分别与健康对照人群作各种基因型构成比的比较，并进行各组间的构成比趋势分析。

The results showed that it would gain higher sustainable genetic respons and lower inbreeding rate when implementing BLUP selection in larger population. When the sire-dam ratio was too low, it would not only decrease the genetic response, but also increase the inbreeding rate. To gain higher genetic progress and acceptable inbreeding rate, it should keep enough large population size and feasible sire-dam ratio in practice.

结果表明，扩大育种群规模不仅可以获得更大的持续进展，同时还可有效缓解近交系数的过快上升；育种群中公畜比例过低时，不仅会降低遗传进展，群体近交系数的上升速度也会加快，实际中应保证育种群具有一定的规模和适宜的公母比例。

According to the data of population census,this thesis investigated the birth rate of the Tus' women total,the brith level of low age and reproduction rate of population.

文章依据人口普查数据，对土族妇女的总和生育率、孩次别生育率、低年龄生育率及人口再生产率进行了考察。

The main achievements of the project are as follows: 1 the hypothesis that a decrease in seed mass causes an increase in mean dispersal distance has been tested based on the experiments of weed dispersal by wind. The experimental results partly support the hypothesis. The results will help farmers to make an optimal strategy of weed control; 2 a statistic method for inferring probabilistic distribution function of a random variable has been developed, by which probabilistic distribution functions of weed species dispersal have been determined; 3 the reproduction structure of Bromus sterilis has been studied; 4 a more complex CA model with 25 neighborhood cells were built, which can simulate spread of a weed population. This work promotes developments in both theory and application of CA models; 5 the "mean law" in weed control has been proposed. Accordingly, the algorism of patch spring may be calibrated; 6 the "patch" and "true patch" have been mathematically defined so that herbicide can be efficiently applied; 7 simulation validates that initial configurations of weed will affect dispersal of its population and strategies of controlling it, or its distribution patterns affect its dispersal progresses.

主要完成的工作和取得的成果有：1）用实验证实了重量较轻的杂草种子并不一定飞得比较重的远，其结果有助于农民制订杂草的优化控制策略；2）发展了一种推断随机变量分布函数的统计方法并用它来获得了几个杂草种的扩散分布函数；3）对杂草Bromus sterilis的繁殖结构进行了研究；4）建立了一个具有25邻的较复杂的能模拟杂草扩散的CA模型，并在理论和应用方面促进了CA模型的发展；5）在杂草控制方面提出了&平均法则&，据此可对按块施药方法进行校正；6）精确地定义了&块&和&真块&以便在杂草控制中能更有效地使用除草剂；7）模拟证实杂草种群的初始配置影响其扩散和控制策略，或者格局影响过程。

If the U.S. population, coupled with the English Federation of the population, coupled with this partnership involved in the air, sea, science and Industrial cooperation in various aspects, it will not appear unstable, precarious balance of power, and adventurers can not help but result careerist.

如果在美国的人口之外，再加上英语联邦的人口，再加上这种合作关系所涉及的在空中、海上、科学和工业各方面的合作，那就不会出现不稳定的、靠不住的力量均衡，致使野心家和冒险家情不自禁。

The purpose of the work is to investigate the frequencies and polymorphisms of HIV-1 resistant CCR5delta32,CCR2b-64I,SDF1-3′A alleles in Chinese Dai and Chingpaw populations.Whole blood samples from 101 Dai subjects and 113 Chingpaw were collected randomly and their genomic DNA were extracted with QIAgen Blood Kits.Allelic frequencies were identified by PCR-RFLP analysis.Allelic polymorphisms in Dai population or Chingpaw population and both sexes in the samples were analyzed by χ2 test.

为了调查HIV-1感染相关的等位基因CCR5△32、CCR2b-64I、SDF1-3′A在我国云南省德宏州傣族景颇族人群中的频率和多态性分布，此课题以101例傣族和113例景颇族人群为研究对象，应用PCR、PCR-RFLP(聚合酶链反应-限制性片段长度多态性)分析方法进行检测，计算突变基因频率；并对其群体分布、性别分布进行统计学分析。

The frequencies of CCR5delta32,CCR2b-64I,SDF1-3′A alleles in Dai population were 0.0000,0.2130,0.2030,respectively;The frequencies of CCR5delta32,CCR2b-64I,SDF1-3′A alleles in Chingpaw population were 0.000,0.1637,0.1770,respectively.Distributions of the CCR2b-64I,SDF1-3′A alleles among the both populations were in accordance with Hardy-Weinberg equilibrium.No statistical difference was found in the allelic frequencies of both CCR2b-64I and SDF1-3′A between male and female individuals.

结果表明，中国傣族景颇族人群中未发现CCR5△32等位基因突变；傣族CCR2b-64I、SDF1-3′A基因突变频率分别为0.2130和0.2030，景颇族CCR2b-64I和SDF1-3′A基因突变频率分别为0.1637和0.1770；与中国汉族人群相比较，傣族和景颇族中SDF1-3′A突变频率较低（P值分别为0.0322和0.0021）；两个民族的CCR2b-64I和SDF1-3′A等位基因群体分布符合Hardy-Weinberg平衡，在性别之间分布无显著差异。

It is home to grey-headed albatrosses, northern giant petrels, white chinned petrels, Antarctic prions, half of the entire population of macaroni penguins and most of the planet's population of the South Georgia blue-eyed shag.

对于灰头信天翁、巨型北方海燕、白颊海燕、南极海燕、超过半数的马可罗尼企鹅以及地球上大多数的南乔治亚蓝眼睛沙格鸟来说，这里就是它们的家园。

Using the spatial point-pattern analysis of Ripley's function, the result indicated that Halostachys caspica population of Ass.halocnemum strobilaceum-H.caspica community on the northwest edge of Junggar Basin shown congregative pattern in 0~50m scale.But Halocnemum strobilaceum population shown congregative pattern in the same scale or the less scale. And there was a positive, no relation and negative relation change series in space between Halostachys caspica and Halocnemum strobilaceum.

采用空间点格局分析方法Ripley，s K函数分析表明，准噶尔盆地西北缘盐穗木-盐节木群落的盐穗木种群在所研究的尺度(0～50m)上呈聚集分布，盐节木种群呈现聚集分布的尺度等于或小于盐穗木种群；盐穗木与盐节木的种间关系在空间上呈正相关、不相关和负相关变化序列。

Haloxylon ammodendron-H.persicum communities, Haloxylon persicum population had a transition from congregative pattern to regular distribution within the scales of 0~50m, while Haloxylon ammodendron population was congregative pattern. There was a negative, no relation and positive relation change series in space between Haloxylon persicum and Haloxylon ammodendron.

白梭梭-梭梭群落的白梭梭种群在所研究的尺度(0～50m)上由聚集分布向均匀分布转变，梭梭种群呈聚集分布；白梭梭与梭梭的种间关系在空间上呈负相关、不相关和正相关变化序列。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。