期

Vg could be detected in haemolmph of the water—fed female at 48h after eclosion, too.

用10％的蜂蜜和清水分别饲喂两组成虫(简称"蜜组"和"水组")，以研究成虫期的营养对Vg发生和卵巢发育的影响，结果显示，成虫期营养对于Vg的启动合成并不起关键的决定性作用，两组成虫均可以在羽化的48小时检测到Vg，且水组中的血淋巴水平并不低于蜜组对照，但绝大多数水组个体的卵巢发育停留在卵黄沉积的某一时期，此时在血淋巴中也检测不到，只有约20％的饲水个体卵巢可以发育成熟，出少量卵；用高剂量的ZR515于羽化当日点滴处理饲水个体，可以使所有接受处理的饲水个体的卵巢发育成熟，但是产卵〓依旧低于对照组的，不能恢复正常；这说明成虫期营养对卵巢中全体卵母细胞的成熟是必需的，其作用的产生是通过内分泌系统途径实现的。

In order to verify nicotine effect to heart of rat , analyzing the electrograph Based on these results , it was demonstrated that nicotine can induce to release acetylcholine locally or act on muscarinic cholinoreceptor controlled by parasympathetic nerve .

为进一步确定烟碱对大鼠心脏的作用，对描记烟碱作用后大鼠心电图进行分析，发现烟碱能引起大鼠心电图显示较长的QT间期，增加了PR间期及T波面积，与肾上腺素或去甲肾上腺素引起的QT间期延长相似，且能被M受体阻断剂阿托品所阻断，说明烟碱能够诱导局部释放乙酰胆碱或者作用于部分副交感神经控制的毒蕈碱受体。

Therefore Professor Sun Su Lun held that emphasis should be lay on strengthening the body resistance, and then he put forward the therapeutic method of strengthening the body resistance to protect encephalon at the early acute stage of ischemic apoplexy.

为此，孙塑伦教授在总结多年临床经验和既往科研成果的基础上，提出了缺血性中风急性期全新的治疗方法--扶正护脑法，作为贯穿中风病急性期始终的基础治疗方法，拓宽了缺血性中风病急性期的中医治疗思路。

In order to study pathogenesis of primary changes in ventricular extrasystole ST-T and its clinical significance, 57 patients in conformity with diagnostic standard in primary changes of VPBs ST-T and their concerned parameters were carefully analysed.

为研究室性期前收缩伴原发性ST-T改变的发生机制及临床意义，分析57例符合室性期前收缩伴原发性ST-T改变诊断标准的患者的相关参数，并与58例无器质性心脏病证据的室性期前收缩患者比较。

The results indicated that 0.3% brackish water could be used for growing melon without any yield losses,but fruit yield reductions were significant(P.01) during straw period and flor-fruit period and(P.01) during fruitage at 5,7 and 9 g/L.The salinity improved quality during fruitage and decreased quality b...

结果表明，在不同生育时期3 g/L咸水处理对甜瓜产量均无显著影响，在开花坐果期和伸蔓期至果实成熟期，5，7，9 g/L咸水处理的单果重均极显著低于对照，而在果实发育期各咸水处理的单果重均显著低于对照；在甜瓜果实发育期以前，不同浓度咸水处理使甜瓜品质稍有降低，而后期处理则能提高甜瓜果实的品质，其中可溶性蛋白含量的变化不大；伸蔓期至果实成熟期持续咸水处理对甜瓜营养生长有明显的抑制作用，其中对株高的影响表现得尤为突出。

Based on interior ballistic theory, an attempt has been made to study the initial variable bullet dispersion of Gatling gun with a basic mathematical analysis model of bullet movement.

针对转管炮发射时身管处于旋转状态的特性，建立了同时考虑弹丸旋转惯性力和科氏力的半约束期内起始模型，分析了惯性力、科氏力在半约束期内对弹丸起始扰动的影响，计算得到了在半约束期运动弹丸的偏角变化规律。

In general, this paper includes several parts, shown as the following: The first part summarizes the background and outline of stock index future and introduce briefly its local status and CSI 300 stock index future contract. The second part has a retrospect of the main academic papers of both local or overseas, and also a discussion of relevant hedge strategies and models, to lay a solid theoretical foundation for the empirical analysis and test for the operation process of hedge in latter parts. The third part outlines the principle, key factors and real operation process of hedge. Moreover, it makes a empirical analysis on popular hedge models with HK Hang Seng index. In the end, it test the hedge effect of trading on IF0706, CSI 300 stock index future contract, with CCB select-growth securities fund as present underlying. The fourth and also the last part, explores how to define hedge ratio in china mainland market. It includes the stability test ofβfor local securities portfolio, adjustment of historicalβand best data length for estimation of historicalβ, etc. Also, the thesis makes some beneficial experiments on the definition of best data length for estimation of historicalβ, survey of fashion forβand variation for industryβs. Fortunately, it's got some meaningful results.

按照以上研究思路，本论文论述由以下几个部分构成：第一部分，简要概述股指期货产生的背景和基本情况，对国内股指期货进程和沪深300股指期货合约进行简单介绍；第二部分，回顾海内外股指期货避险研究的主要文献，讨论相关避险策略及避险模型，为后面套期保值策略如何有效运用的实证分析和检验提供理论基础和依据；第三部分，对套期保值的原理、关键因素及实际流程进行概述，并采用香港恒生指数对常用的几种避险模型进行实证分析，最后一揽子以建信优选成长股票型基金为现货标的，实际检验以沪深300股指期货模拟交易IF0706产品进行对冲时的套期保值效果；第四部分，探讨国内确定避险比率的过程，包括国内股票组合β值的稳定性检验、历史β值的修正及估计历史β值的最佳数据长度等，通过数据分析，本文在寻找估计β值的最佳数据长度和考察风格、行业β值的差异上做了较为有益的尝试，并得到了有助于现实操作的结果。

At the same time, the optimal hedge ratio is derived and analysised theorictically. This leads to the disadvantage of existing model blindly pursuing risk-minimizing and ignoring the hedger's expected return being settled, and provides a futures hedging strategy for hedger.

并从理论上推导和分析了最优套期保值比率，解决了现有模型的一味追求风险最小化而忽略套期保值者期望收益率和交易成本的不足，为套期保值提供了一种优化策略。

RESULTS: Of the 115 patients, 71 ( 61.7%) had intracranial hemorrhage and 44 ( 38.3%) showed cerebral parenchyma lesions; 64 ( 55.6%) had high risk factors associated with brain damages; 34 ( 29.6%) had abnormal neurological signs: convulsion, hypertonia or irritability.

结果：115例存在胎儿期脑损伤的患儿中，不同部位颅内出血71例(61.7%)，双侧脑半球实质性病变44例(38.3%)。64例(55.6%)存在妊娠期多种合并症，34例(29.6%)新生儿期表现出惊厥、肌张力异常或激惹状态。

The immune monitoring in HIV infector should be paid more attention.

北京市HIV感染者CD4淋巴细胞数处于较低的水平，处在艾滋病期或正从无症状期向艾滋病期转变，应该加强HIV感染者的免疫状况监测工作。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。