物质的改变

Vascular endothelial cell injury caused by the imbalance of secretion vasoactive substances as well as its activity changes has played an important role in the process of preeclampsia development.

血管内皮细胞损伤所致血管活性物质的分泌失衡以及活性的改变，在子痫前期的发生发展过程中起着重要的作用。

Under the collaborative impact of anthropogenetic activities and climate change, the reach of Shanzi Dam of Aojiang River as a source of drinking water is changing the nutrient transmission by dam construction that had been revealed through "algae bloom".

作为饮用水源地的敖江山仔筑坝河段，筑坝对河流营养物质输送的改变通过&水华&问题暴露出来，蓝藻的大量增殖已经威胁到人们的饮水安全，因而对该河段营养特征的研究，有重要的理论和现实意义。

The results indicate that during Qigong practice there are significant changes in one's brain α wave, facial and palmar temperature, low frequency vibration amplitude of acupuncture points and chemical transmitters in the blood.

结果发现练功时脑α波，手掌及脸部的温度，甚至重要的穴位，血液中的重要化学传递物质均有极大的改变。

Trolled by the first largest shareholders in substance, and the prevalence of single large shareholders remain little changed, which makes it hard to materialize the small and medium shareholders' senses of participation.

藉着第一个轮唱物质的最大股东，而且单一大的股东传播保持很小改变，这使赋予实质小的和决定性的股东分享感是困难

Result With young elm forest-pumpkin strip intercropping, since the branch tendril covered the gap between pumpkin planting-ditches and elm forest land, the soil moisture was remarkably increased. And the water use efficiency under intercropping increased by 23.7%-163.3% compared with the sole cropping. Elm-pumpkin strip intercropping changed the sequential succession trend of the grasses growing in the gap of the pumpkin planting-ditch, annual grasses became the dominant vegetation, and the feeding nutrient matter content and yield of the annual grasses increased significantly.

榆树幼林与南瓜间作后，瓜蔓覆盖地面，显著提高了南瓜行间和榆树林地的土壤水分含量，林－瓜间作地水分的利用效率较单作提高了23.7%~163.3%；间作改变了南瓜行间杂草群落自然演替的方向，一年生杂草成为优势物种，其饲用营养物质的含量和产量较林带间杂草显著提高。

Abstract］ Objective To assess the endothelium-dependent relaxation in patients with essential hypertension or hypertension smokers by color Doppler flow imaging.Methods With intermittent ultrasound imaging and power Doppler imaging,we measured endothelium-dependent relaxing function in 72 subjects 24 of whom with essential hypertension,24 of whom with both hypertension and smokingand the others as normal control.We measured the diameter of the superficial femoral and brachial arteries at rest,during reactive hyperaemia,re-test and after sublingual glyceryl trinitrate for evaluating the endothelium-independent dilatation in subjects.The level of plasma NO,ET,PGI2,and TXB2 were determined.

摘要］ 目的探讨原发性高血压及高血压合并吸烟患者血管内皮依赖性舒张功能的改变方法采用彩色普勒高频超声的间歇成像和能量多普勒成像，对24例原发性高血压患者、24例高血压合并吸烟患者及24例正常血压无吸烟史者的血管内皮依赖性舒张功能，包括静息时血管内径、增加流量引起的血管舒张、硝酸甘油引起的血管舒张等，以及对血浆氧化氮、内皮素、血栓素B2（TXB2）和列腺环素（PGI2）等血管活性物质进行检测并比较分析。

The addition of malt extract and glutamine could inhibit non-embryonic calli, and make the culture be mainly composed of embryonic calli; change of the 2,4-D concentration in liquid culture medium could adjust the status of embryonic calli to the suitable developmental stage for protoplast isolation.

通过麦芽提取物和谷氨酰胺两种物质的添加，可以起到抑制非胚性愈伤生长的作用，使培养物主要以胚性愈伤为主；通过液体培养基2，4-D浓度的改变，可调节胚性愈伤处于合适的发育时期，便于原生质体的分离。

The change of REE composition between the upper and lower samples from Hongcan well implied the tectonic setting and property of the sediment provenance in Zoige Basin were altered obviously between late-period of Middle Triassic and mid-period or late-period of Late Triassic. This change was probably due to elevation and erosion of the matured continental crust on the east of Zoige Basin, and lots of clastic materials transported into the basin in late-period of Late Triassic.

通过对比杂砂岩稀土元素组成在上层和下层样品之间的变化，若尔盖盆地内中三叠世中期到晚三叠世中期及晚期沉积物源区的构造背景和性质发生了明显的改变，而这一变化很可能是盆地东侧成熟陆壳在晚三叠世后期被抬升和剥蚀，其大量碎屑物质被带到盆地的结果。

After Mr Putin leaves office, especially if the oil price falls and the material gains of his presidency fade away, ever more Russians may become frustrated with rulers who offer them recipes for shashlik but not for genuine change.

普金卸任后，尤其是如果油价下跌及其在任内创下的物质财富消耗殆尽，或许会有更多的俄罗斯人对统治者感到失望——他们要的不是烤肉串的做法，而是真正的改变。

Similar lamellar hybrids can be obtained from octa(y-chloroammoniumpropyl) polyhedral oligomeric silsesquioxanes dodecyl benzene sulfonic acid sodium salt C_(18H_(29)NaO_3S, DBSS. Further research shows that different POSS to surfactant ratios result in different arrangement of layers: when there exists excessive POSS, the layer is arranged in a "Alkyl-POSS-POSS-Alkyl" sequence; while on the contrary, the layer is in "Alkyl-POSS" sequence.

实验研究表明，通过调整POSS和表面活性剂的物质的量比例可以改变片层结构，发现当POSS成分大大过量的时候，片层重复单元按照&烷基-POSS-POSS-烷基&顺序排列，对应较大的层间距；当表面活性剂成分大大过量的时候，片层重复单元按照&烷基-POSS&顺序排列，对应较小的层间距。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失