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To make a comprehensive view of metapopulation researches, we folly analyze and summarize the present concepts, theories and models of metapopulation in this paper, which primarily includes the dynamical models and simulation approaches of single and competitive metapopulations. Based on the Levin's patch occupant model, the center framework of metapopulation researches, primary principles and mechanisms are discussed. First, Levins rule: the fraction of empty patch will remain constant with habitat destruction as long as metapopulation survives. This rule implies that empty patches have determinant effects on persistence and conservation. Second. Allee effect of metapopulation is incurred by establishing difficulties and dispersal costs, which is important to the studies of reserve area and the minimum available metapopulation size. Third, we analyze the rescue effect that immigrants can reduce the extinction risk of the presented local population. Rescue effect can leads to the improvement of metapopulation sustainability and the decrease of fraction of empty patches. Fourth, the coexistence mechanism of two competing metapopulation is discussed, which suggests that competition-colonization trade off may be prevalent in competing systems. Finally, extinction debt ob tamed from coexistence mechanism is given, which depicts the lost of species richness in the future for the current habitat destruction. After theoretical discussion, we present two popular simulated approaches in metapopulations: probability transition model and stochastic process model.

为了能总观集合种群进展的全局并开展进一步的工作，首先对集合种群的已有概念、理论和模型做了全面的分析和总结；其次对集合种群的发展和概念进行了探讨，以集合种群模型的中心框架：Levins的斑块占据模型为基础，展开对其它原理、效应和机制的探讨；主要包括了Levins原理，即当生境进到破坏时，空斑块比例在集合种群灭绝前保持不变，然后还分析了Allee效应（集合种群的Allee效应主要是由于建群困难和扩散损失造成的）；第三，分析了援救效应：迁人个体可以降低斑块中现有局域种群的灭绝风险，援救效应会增强集合种群的生存力，使空斑块比例下降第四，探讨了两竞争集合种群的共存机制，即竞争－侵占妥协，其共存机制为空间生境中物种共存提供了有力的理论解释。

Among Chen Qiang's works of every period, there have always been some paintings that employ an empty space in the center. The empty areas maintain the eye shape and its distortion, or similar empty areas. If we regard the calm, one-colored strokes which join the background within the eye shapes as a visual absence, then we could very easily respond with the same shapes.

陈墙每一个阶段的作品中总有部分作品在幅面居中部分留空，这个留空部分大致保持眼睛的形状及其变形或者类似空白，如果把眼睛形状内与整幅背景连成一片的单色平涂看作切断联想的茫然无视，它造成的观看极能与其构成同状对应。

Kenos {ken-os'} apparently a primary word; TDNT - 3:659,426; adj AV - vain 9, in vain 4, empty 4, vain things 1; 18 1 empty, vain, devoid of truth 1a of places, vessels, etc. which contain nothing 1b of men 1b1 empty handed 1b2 without a gift 1c metaph.

相关经文回前一页 2756 kenos {ken-os'}很显然的是个字根； TDNT - 3：659，426；形容词 AV - vain 9， in vain 4， empty 4， vain things 1； 18 1 空的，徒劳的，缺乏真理的 1a 对地方或是船等等的来说，那里没有任何东西 1b 对人来说 1b1 空手 1b2 没有带礼物 1c 隐喻。

The total flavonoids content of peanut hulls of different sources were evidently different,those peanut hulls contained more total flavonoids from Shandong province,higher maturity and raw. This suggested that attention should be paid to the choice of peanut hulls as medicine materials. 3.The optimized extraction technology conditions considering the two indices of total flavonoids andβ-sitosterol were: the peanut hulls were extracted by 95% acohole 6 times of the hulls weight refluxing for 2 hours first,and extracted by 70% acohole 4 times of the hulls weight refluxing for 2 hours at the temperature below 80℃successionally,then the concentrate was dried vacuumizedly with the additament of starch 2% of the concentrate weight after the extracts were fitrated,united and concentrated. 4.The dried extract powder possessed high hygroscopy and low fluidity,but the weight variation of capsule contents could comply with the requirement of CP if it was mixed with dextrin and granulated by sieving 40 meshes using 95% ethanol as the wetting agent,and filled into capsules after dried below 60℃.The critical relative humidity of the granules was about 63%.

不同来源的花生壳总黄酮含量有较大差异，山东产区、成熟度高的及未经炒制的花生壳总黄酮含量较高，提示作为药材时应注意选择； 3、兼顾总黄酮及β-谷甾醇的最佳提取工艺为：先以95%乙醇6倍量加热回流提取2小时，再以70%乙醇4倍量80℃以下回流提取2小时，提取液过滤、合并、浓缩，加2%淀粉60℃以下减压干燥； 4、浸膏粉吸湿性大，流动性差，但加糊精并以95%乙醇为润湿剂、过40目筛制粒，60℃以下烘干后填充胶囊，可保证装量差异符合要求；颗粒临界相对湿度约为63%。

The experiment sets a, b, c, d4 processing, every handle 20 small rat, feed respectively with feed of different additive ph indicator (a group, group of 50mg/g weight;b, group of 25mg/g weight;c, group of 13mg/g weight;d, 0mg/g weight), experiment period 21d.

试验设a、b、c、d4个处理，每个处理20只小鼠，分别喂以不同添加剂浓度的饲料(a组，50mg/g体重；b组，25mg/g体重；c组，13mg/g体重；d组，0mg/g体重)，试验期21d。

The actinic radiation-curable and cationically polymerizable organic substance is at least one glycidylether of a polyhydric aliphatic, alicyclic or aromatic alcohol having at least three epoxy groups with epoxy equivalent weight between 90 and 800 grams per equivalent, at least one solid or liquid alicyclic epoxide with an epoxy equivalent weight between 90 and 330 grams per equivalent having at least two epoxy groups and monomer purity greater than about 90 % by weight, or at least a solid or liquid epoxycresol novolac or epoxyphenol novolac having epoxy equivalent weight between 130 and 350, or mixtures thereof.

可光化辐射固化并可阳离子聚合的有机物质为至少一种带有至少3个环氧基团环氧当量为90―800克每当量的脂族、脂环族或芳族多元醇的缩水甘油醚，至少一种环氧当量为80―330克每当量带有至少两个环氧基团且单体纯度大于约90wt％的固态或液态脂环环氧化物，或至少一种环氧当量为130―350的固态或液态环氧甲酚线性酚醛清漆或环氧苯酚线性酚醛清漆，或其混合物。

The decoction did not have the influence regarding to the wet weight of uterus.(2) Wet weight of ovary:Compared with the blank group,the ovary weight of other groups were significantly lighter(p＜0.05).There is two reasons:First, because of decoction intervention ahead of time,it may had the prevention and the treatment dual function;Second,it possibly promoted the ovulation, and caused the liquid discharged from the pouch of the ovary,thus promoted ovary volume and weight decline.(3) Endocrine changes:①The content of androsterone in high dose groups were significantly lower than the low dose groups(p＜0.05),Chinese herbal had certain dose-effect relationship.

上方对于子宫湿重无影响(P＞0.05)。2、卵巢湿重：用药的各组与空白组比较，对于卵巢的重量均有影响(p＜0.05)，考虑有两个原因：第一，由于造模的同时用药，有预防与治疗的双重作用；第二，可能是促进排卵，使囊内卵泡液排出，从而促进卵巢体积及重量的下降。3、内分泌改变：①高剂量组别与低剂量组别比较，在降调总睾酮的作用更大，差异有统计学意义(p＜0.05)，说明中药治疗作用具有一定的量效关系。

The results show as follows:(1) The characteristical parameters are given out during MSW pyrolyzes as follows: the beginning temperature of quick weight loss, peak value of weight loss, beginning temperature of slow weight loss and weight loss rate of pyrolysis in different temperature etc.

结果得出：(1)垃圾热解时得到特性参数：开始快速失重温度、失重峰值、慢速失重温度、不同温度下垃圾热解的失重百分数等。

If the low-speed machines "dead weight" down prematurely, resulting in lateral control drawing is not complete and paper La resistance of phenomenon, in such a situation, you should down to resize "dead weight" pressure "dead weight" in the side control raised when you were not lifted, sometimes down to the technical issues in turn make an adjustment, such as "dead weight" lift up the time properly, too, would like to stress the work of the side syndiospecific faster time-to-side gauge time control of cam to the machine up forward direction.

如果矮速机的"千斤"上去过早，致使侧规不推纸处事还来达成不离受阻辛而变成纸弛不推不到位的不隐象，在这种环境下，答当停机来从头调动"千斤"的不张辛，使"千斤"在侧规给抬起来而未抬起来时压上去，有工夫，给把此技艺题目不侧过来举不静调动，如"千斤"抬起工夫侧常，不张辛也侧常，则给调迟侧规的处事工夫，把侧规处事工夫的把持凸轮向机械侧不停标的目的调迟一些。

Through the treatments of defoliate, darken ear and darken peduncle, we studied the effects of wheat photosynthesis organs on five items, such as 1000-grain weight, grain weight/ear, grain number/ear, contribution to 1000-grain weight and contribution to grain weight/ear in different fertilizations.

为了解小麦光合器官对产量的作用以及施肥的调节效应，通过剪叶、包穗、包穗下节等处理，研究了不同施肥条件下小麦光合器官对千粒重、穗粒重、穗粒数的影响以及对千粒重贡和穗粒重的贡献率。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。