On the basis of the estimated intake of electrolytes , it is hypothesized that low urinary potassium and phosphate , taken together with hypercalciuria , are developmental factors contributing to the rise of blood pressure with age , by increasing peripheral vascular resistance ; low magnesium and calcium intake contribute as major exogenous factors 从上述的电解质排泄量以及估计出来的电解质之摄取量判断起来，可以假说：钙及镁之摄取量可以影响小孩之血压之增加，并且尿钾及磷排泄量之减少暗示细胞之成熟而引起末梢血管抵抗力之增加，而最后可引发血压之增加也。
The aim of our study is to build a distributed vod system that can manage a large amount of programs and serve a great number of subscribers in a wide area . the article comprises two main ideas , as follow : this paper mainly describes system model of distributed structure , which the whole system is divided into two parts , program center and on - demand center 本文针对在较广地域内面向众多区域网络部署vod系统的情况，提出了一种分布式层次结构的系统模型，将整个系统在组织上分为节目中心、点播中心两大部分，与传统视频点播技术相比，点播服务被推向了网络末梢。
But friday put us out of doubt quickly ; for seeing the bear cling fast to the bough , and that he would not be persuaded to come any farther ; well , well , says friday , you no come farther , me go , me go ; you no come to me , me go come to you ; and upon this , he goes out to the smallest end of the bough , where it would bend with his weight , and gently lets himself down by it , sliding down the bough , till he came near enough to jump down on his feet , and away he run to his gun , takes it up , and stands still 你不到我这儿来，我到你那儿去。 "说完，他爬到树枝的末梢，那地方只要用他的体重一压，就会垂下来。他轻轻从树枝上滑下来，等到他离地不远时，一下子就跳到地上，飞也似地向他的枪跑过去，把枪拿在手里，站在那里一动也不动。
Botulinum neurotoxin serotype a produced by the clostridium botulinum , are the most lethal substances known . a single molicule can abolish the function of a nerve cell . the toxins exert their action by blocking the release of the neurotransmitter , acetylcholie , at the neuromuscular junction , the blockage of bont / a makes neuromuscular weakness and flsccid paralysis , and lead to respiratory failure and death . botulinum is a serious public heath problem in developing countries around the world A型肉毒毒素( botulinumneurotoxinserotypea ， bont a )是由肉毒梭菌产生的一种强烈的外毒素，是目前已知最毒的天然物质，一个单分子的肉毒素分子就能阻断一个神经细胞的功能，通过阻断运动神经末梢乙酰胆碱的释放导致机体发生瘫痪，严重者发生呼吸衰竭而死亡。
