分群

Results a total of7924people from15survey sites of6counties were under fecal examination,the overall infection rate of intestinal helminthes was59.40%.of the discovered16parasite species,11were nematodes,2taeniae and3trematodes.the infection rate of hook worm,trichuris and ascaris were33.18%、31.35%and14.29%,respectively.the mixed infection was serious.the infection rate were higher in age groups of5～9years and10～14years;nationality-based analysis showed infection rates in hans,lis,miaos and huis being48.27%,64.14%,76.36%,and58.96%,respectively;the infection rate in female was higher than that in male.

结果 整群随机抽样全省5个市、县15个点7924人，调查发现人群肠道蠕虫感染率为59.40%，其中土源性线虫感染率为56.22%，查见肠道蠕虫16种，其中线虫11种，绦虫2种，吸虫3种，感染率较高的虫种是钩虫、鞭虫和蛔虫，其感染率分别为33.18%、31.35%和14.29%；多虫感染较严重，感染度以轻度感染为主，感染年龄以5～9岁和10～14岁两组为高；汉、黎、苗、回各民族感染率分率别为48.27%、64.14%、76.36%、58.96%；女性和农村居民感染率明显高于男性和城镇居民。

The comparative study on vegetation background survey of the stationsand the comparison on level of phytocoenology on zonal habitats indicates thatthe diminishment of the numbers of families,genus and species,compositionof life types,diversity of communities and habitats,;and the increscence in theproportion of photosynthesis functional groups of C3/C4 plant,richness ofspecies,density of tussock and tiller,diversity of species,evenness,leaf areaindex,leaf area duration,dry matter production of communities alongside thelatitude increasing and the temperature decreasing;and the dynamic curve ofthe community productivity also tend to steadily increase along with thetemperature going up and the heat accumulation gradually in moderate-temperate steppe station from violent fluctuation along with seasonal badly-distribution of precipitation in warm-temperature steppe station;manifestingthat transformable tendency of productivity pattern of the community from morevigorous net assimilation,sparser and higher crops stricture of tussock and tiller,and possession on more resources by less species inclined to thicker in densityof crops,superior effectiveness of multi-leaves and pattern of multi-speciesresource sharing,reflecting that bigger disparity of the vegetationcharacteristics and the style of the community growth in the two differentthermal-type steppe stations owing to background of natural-historicenvironment and combination of water and heat.

内蒙古草原区两个不同热量型研究站点植被本底调查和显域地境群落学水平的比较研究表明：随纬度增加和气温降低，植物科、属、种的数目，生活型组成，群落类型和生境类型的多样性均趋于减少，而C3/C4光合功能群比值和群落的物种丰富度，株丛密度，物种多样性，群落均匀度，叶面积指数，叶面积持续时间和群落干物质生产能力均趋于增加，群落生产力动态曲线从随天然降水的季节分布不均而剧烈波动趋向于随气温逐渐升高和热量逐步积累而稳定增长，显示出两站点植物群落从较为旺盛的群体净同化作用、较为稀疏高大的群体结构和少数物种占有较多群落资源的生产力格局向较高的群体密度、优良的多叶性能和多物种资源共享的群落生产力格局转变，反映出在内蒙古草原区不同的自然历史环境背景和不同的温度条件及其水热组合状况影响下，两个不同热量型草原站点植被性质的分异特征和显域地境群落生长模式的较大差别。

The CMS line 9704A, the restorer 8001 and F, population of 9704AX8001 containing 120 individual plants were used for molecular mapping of the restorer gene by bulked segregant analysis. 515 decamer primers with arbitrary sequences were chosen for polymerase chain reaction amplification. It is found that the polymorphism between the parents could be detected by 43. 8% of the primer and one RAPD marker OPL09-76I was tightly linked to the restorer gene of the restorer 8001 with the overcross value of 4.17% and genetic distance of 4. 18cM. The marker was repeatable and easy to score.

以辣椒CHS系9704A、恢复系8001及其组合9704A×8001F_2群体120株植株为材料，利用群分法法进行恢复基因定位，通过515个随机引物的PCR扩增分析，发现43.8％的引物在双亲间表现出多态性，找到一个与辣椒CMS恢复系8001中的恢复基因紧密连锁的分子标记OPL09_(-763)，该标记与8001的恢复基因的交换值为4.17％，遗传距离为4.18cM。

When earlier place upside still does not have apparent symptom, root ministry grows to already was affected, radicle root needle grows stop, and cerebral cortex continues to add thick, in close root needle section chief gives very much new root, serious Shi Yougen dies, typical symptom is long around dead root piece short thick and much more ramose root group.

初期当地上部还无明显症状时，根部生长已受到影响，幼根根尖生长停止，而皮层继续加厚，在近根尖处长出很多新根，严重时幼根死亡，典型症状是在死根四周长出短粗且多分枝的根群。

The experts behind the discovery say elephants are capable of vocal imitation, joining a select group of animals that includes parrots, songbirds, dolphins, and humans.Zoologist Joyce Poole was the first to notice some rather unelephantine noises emanating from a group of semiwild, orphaned elephants in Tsavo National Park, Kenya. She managed to track the sounds to a female named Mlaika. But the ten-year-old's powers of mimicry were so developed that the task wasn't easy."I was sometimes unable to distinguish between the distant trucks and Mlaika's calling," said Poole, the scientific director of the Amboseli Elephant Research Project."This is what first made me wonder whether she could possibly be imitating the truck sounds."Poole said others in Mlaika's group have been heard to make a similar noise, which is quite different from any call previously recorded in elephants.

据美国《国家地理》杂志网站3月23日报道，进行这项研究的科学家表示，与鹦鹉、某些鸣禽、海豚和人类一样，大象具有模仿声音的能力t921.com动物学家乔伊斯·普尔是安博塞利大象研究计划的负责人，也是第一个注意到这种现象的人t921.com她在肯尼亚安博塞利国家公园里，发现了一群半野生的、孤儿大象的象群发出了不同寻常的奇怪叫声t921.com普尔曾试图通过声音来追踪一只名为米爱卡的雌性大象，但是这只10岁大象出色的模仿能力让普尔的任务变得并不简单t921.com普尔说：&有些时候，我简直分不清究竟是远方的卡车发出的声音还是米爱卡的叫声，这让我非常好奇，我想是不是米爱卡能够模仿卡车行驶的声音呢？&

Gynoecium 3-5(or 6)-carpelled and -loculed; ovaries axially or ± completely connate; placentation apical-axile; ovules pendulous, solitary or collateral in each locule; style terminal, stylar elements coherent or rarely distinct at base; stigma 3- or 4-branched or capitate.

雌蕊群具3-5(-6)心皮和室；子房沿轴方向合生或者几乎完全合生；顶生中轴胎座；胚珠下垂，在每室内单生或者并生；花柱顶生，花柱粘在一起或很少基部离生；柱头3-4分枝或者头状。

The Paleoproterozoic Beidahe Group-complex remains as continental shivers in the interior of the North Qilian orogen. In its early stage of development, there occurred abundant amphibolite. The protolith of the amphibolite is basalts. The Alk-∑FeO-MgO plot, REE features and Rittmann index show that the protolith belongs to the calc-alkaline suite and exceptionally shows the subalkaline character. The rock is characterized by higher Al2O3 and ∑FeO and lower Mg#, indicating that it has a higher degree of compositional evolution and that the formation of volcanic rocks is related to activation of older crust. Highly fractionated REE patterns and amphibolite on the Ti-Zr-Y plot, Ni-FeO/MgO plot and Ta/Yb-Th/Yb plot all indicate the characteristics of volcanic arcs and active continental margins. On the geochemical diagram of basalt, the overall REE features are in the main analogous to those of calc-alkaline island-arc basalt, with Sr87/Sr86=0.71617–0.72033,Nd143/Nd144=0.512414–0.512495 and εNd=–2.79 to –4.37,εSr=245.78–305.3, showing that the magma was derived from the crust or subjected to contamination with the lower crust below the continent.

提要：以大陆碎块形式残存于北祁连造山带内部的古元古代北大河岩群早期发育有大量的斜长角闪岩，其原岩为玄武岩，Alk—∑FeO—MgO图解，REE特征，里特曼组合指数等均显示斜长角闪岩属钙碱性系列范围，个别显示弱碱性，斜长角闪岩具有较高的Al2O3，∑FeO和低的Mg#，这些特点反映其成分演化程度较高，表明火山岩的形成与古老地壳的活化有关，有较强分异的稀土元素分配模式，在Ti—Zr—Y图，Ni—FeO/MgO图解和Ta/Yb—Th/Yb图解上斜长角闪岩均显示火山弧或活动大陆边缘的特点，在玄武岩的地球化学形式图，稀土元素整体特征与钙碱性岛弧玄武岩基本相同；87Sr/86Sr=0.716 17～0.720 33， 143Nd/144Nd=0.512 414～0.512 495，εNd=-2.79～-4.37。

There was no significant difference between the fatty acid compositions of the toxigenic and non-toxigenic strains. Conclusion:FAME method is useful in rapid identification of Vibrionaceae strains and in field isolation of V. cholerae. It can be used to judge the relationships of strains in small outbreaks, but it cannot differentiate the subgroups of V. cholerae.

结论脂肪酸分型对弧菌种的快速鉴定有应用价值，对霍乱弧菌的现场分离鉴定有辅助意义，在小样本暴发资料的研究中能够反映菌株之间的亲缘关系，但其对霍乱弧菌种属内的各种特征性菌群不具有鉴别能力。

Values, the chemical composition of biotite of them and their petrochemical composition on the corresponding dia grams are all distributed transitionally between the "typi cal areas"; 2 that the micro-elements indicating genesis and the REE distribution parttens display the transitional change from the mines in North to those in South in this region; 3 that their K-Ar age of biotite is distinctively inconsistent with their Rb-Sr age of total rocks; and 4 that there occur several rock body groups with various genetic features which are formed at the corresponding time in the same Pb-Zn ore fields.

具体表现在全岩锶同位素初始比值、黑云母化学成分，岩石化学成分在相应图解上不集中而呈&过渡态&分布；微量元素成因特征及稀土分配型式在本区空间上呈&过渡态&展布；岩浆分异演化过程中各种地球化学演化参数不连续变化；全岩Rb-Sr同位素年龄与黑云母K-Ar年龄值严重不合；同一矿区，普遍发育不同岩性组合的岩体群等等。因此，地洼型多因复成成岩成矿作用在湘南铅锌矿床形成过程中是一个带有普遍性的区域成矿规律。

Methods 90 unmedicated OCD patients were assessed with RDC, DSM-Ⅲ-R and CCMD-Ⅱ diagnostic systems, Yale-Brown Obsessive Compulsive Scale, and a specially designed clinical information sheet. Results The mean age of onset of OCD was (21.2±8.3) years, male to female ratio was 1.7, and mean duration of illness was (6.4±6.0) years.

目的 探讨强迫症临床过程的基本特征，强迫症状之间的相互关系及症状形成的病理心理机制，筛选出本病病理心理上相对独立的症状群，为本病今后在特殊领域里的深入研究提供筛选同源性病例的方法，也为本病的临床分型诊断和治疗提供症状学依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。