查询词典 heterogeneity

Microhabitat variety shows significant effects on plant morphological performances. To understand adaptation strategy of alpine species to resources heterogeneity, response of biomass allocation and morphological characteristics to nutrient and light heterogeneity were studied for three component species (Saussurea macrota, Salvia przewalskii and Senecio scandens) in alpine meadow of the Qinghai-Tibetan Plateau.

为了解高寒植物幼苗对生境资源异质性的适应策略，以高寒草甸中常见的3种草本植物大耳叶风毛菊、甘西鼠尾草和千里光为材料，比较研究了这3种植物幼苗对不同光照和养分资源的响应。

In this study, the researches are focused on slighting topics, such as the bird biodiversity and heterogeneity of bird community, improvement of statistic methods and blending landscape ecology with avian ecology on scale and heterogeneity.

l、突破现行鸟类群落研究思路，本文结合与鸟类分布密切相关的生境因子，将鸟类分为不同的类型后再进行生态学分析，以避免冗余种对多样性和聚类的影响，正确显示物种在生态系统中的不同地位和作用。

The petrophysical properties reflect reservoir heterogeneity by integration of well testing with reservoir performance are acquired by means of geostatistics , multi-parameter cluster analysis , neural network technique , a set of method of quantitative division and estimation to reservoir quality unit in carbonate pools of fracture and vug type is explored , the estimated parameter for different unit is acquired. which lead to better the understanding of reservoir behavior and heterogeneity.

以地质统计学技术、神经网络技术和多参数聚类分析技术为手段，利用试井资料及其它开发动态资料，动静态资料相结合，研究和求取了反映岩溶储层非质性的物性参数；研究和探索了一套缝洞型碳酸盐岩储层开发储集质量单元的定量划分和评价方法，建立了不同单元的储层质量评价参数，深化了对缝洞型碳酸盐岩储层非均质性的认识。

This conglomeratic sand body has the characteristics of medium-high permeability, medium-high porosity, fairly serious heterogeneity and sensitivity. The lateral strong heterogeneity is in the northern part and the vertical one is in the upper part.

该砂砾岩体虽具有中高孔、中高渗储集层特点，但存在较严重的非均质性和敏感性问题，平面以北部非均质性最强，纵向以上部非均质性更严重。

We first investigated whether habitat heterogeneity influenced tree distributions, and then examined the conspecific tree patterns and density dependence after removing the effects of habitat heterogeneity.

我们首先分析了生境异质性是否影响树木的分布，然后排除生境异质性的干扰检验同种分布格局和密度制约效应。

A series of profile numerical simulation are based on the datas of core flooding experiment, including the homogeneous profile positive rhythm section, the rhythm section, interlining profile, interlayer heterogeneity section, intraformational heterogeneity of reservoir section, the actual reservoir simulation. The the section of displacement mechanism of core flow method and the datas of core flooding experiments take into account, the EOR scheme of later stage is CO2 preslug followed by the N2 slug flooding, at last is the waterflooding or depletion type of drive..

为了进一步分析注CO2／N2段塞驱对扫油效率的影响，在岩芯驱替实验的基础上对N2推进CO2段塞驱进行了均质剖面、正韵律剖面、反韵律剖面、隔层剖面、层间非均质剖面、层内非均质剖面、实际油藏剖面的数值模拟研究，通过对比研究，初步认为高11油田在开发中后期提高采收率技术上可选取在适当高的压力条件下，先注前置CO2段塞驱，后续再注N2段塞顶替驱，然后再转注水或衰竭开采的驱替方式。

BACKGROUND: Although expert opinion has asserted that there is an increased risk of violence in individuals with schizophrenia and other psychoses, there is substantial heterogeneity between studies reporting risk of violence, and uncertainty over the causes of this heterogeneity.

背景：虽然专家意见已经确定精神分裂症和其他精神疾病个人的暴力风险是增加的，但是研究暴力风险的报告之间存在固有差异性，并且造成这种差异性的原因也是不确定的。

At a certain range, habitat loss and its spatial structure can benefit the control of the epidemic disease, which indicates the possibility of using human disturbance in habitat as a potential epidemic-control method in conservation.(6) Not only the quantity of habitat loss but also the spatial correlations of patch types caused by nonrandom habitat loss affect the invasion and transmission of disease. More fragmented landscape (high amount of habitat loss, low clustering of lost patches) hinders the parasitic infection, which also indicates that whether the spatial heterogeneity benefits or hinders the invasion is dependent on the considered ecological process.(7) Two components of the spatial heterogeneity (the amount and spatial autocorrelation of the lost habitat) form a trade-off in determining the host-parasite dynamics.(8) Within a certain range of habitat loss, host can counterbalance the positive and negative effects, and shows a rising tendency.(9) The epidemic is more likely to break out in the prey-predator system if only a small amount of habitat loss.(10) A highly aggregated distribution of species is a common behavioral strategy when dealing with habitat loss or other environmental stresses.(11) The parasite-host/prey-predator eco-epidemiological systems have the similar mechanism with the intraguild predation systems, and the predator acts as the intraguild predation, the infected prey acts as intraguild prey, and the susceptible prey acts as shared resource.(12) Species at the highest trophic level are no longer affected the most by habitat loss, which depend not only on the biological mechanism but also on the external environmental disturbances.

随着邻体数目的增加，病毒的感染力度变得更大而且在空间上形成聚集的波形；(5)生境破坏及其空间结构在一定范围内有利于疾病的控制，这暗示人为对生境的干扰可作为疾病控制的一个潜在方法；(6)生境破坏的数量以及不同类型生境的空间分布格局都显著地影响了寄生病毒的入侵和传播，生境破碎化程度越高(高丧失斑块的数量或低聚集程度)，将越有害于病毒的入侵和传播，这暗示了空间异质性是否有益于物种的入侵依赖于所考虑的生态过程；(7)由生境破坏引起的空间异质性的两个组分之间存在负偶联关系trade-off(8在适度的生境破坏范围内，宿主种群能够平衡生境破坏带来的正负两种效应并呈现增长趋势；(9)在捕食-食饵系统中，寄生感染病毒极有可能在生境破坏量较低时爆发；(10)物种在面临生境破坏或者其它环境压力时表现出更高的聚集分布策略；(11)寄生-宿主/食饵-捕食生态传染病系统与共位捕食食物网结构具有相似的生物机制，其中捕食者扮演共位捕食者的角色，已感染食饵作为共位食饵，易感染食饵扮作共同消耗的资源；(12)位于最高营养级水平的种群对生境破坏的响应不一定是最敏感的，这不仅依赖于内在的生物机制同时也依赖于外在的环境干扰。

Weibull model ; new product trial ; never triers ; heterogeneity in individuals ; heterogeneity in consumer segmentations.

Weibull模型；新产品采用；永不采用人群；个体差异；群体差异

The spatial heterogeneity of soil water in alpine meadow is found to be the highest, and that of the soil water in alpine shrub is comparatively low. What is more, the spatial heterogeneity of soil mater in desert grassland shows an unstable trend influenced by many outside factors.

结果表明，高寒草甸土壤水分的空间异质性最高；而高寒灌丛的较低；沙化草地的空间异质性受到多方面外界因素的影响而表现出不稳定的态势。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。