查询词典 prevent changes

Our aim in this observational, prospective, noncontrolled studywas to detect, in 29 patients who underwent abdominal aorticaneurysm surgery, correlations between the incidence ofpostoperative organ failure and intraoperative changes in arterialand portal blood lactate; changes in intramucosal sigmoid pH; differences between sigmoid PCO2 and arterial PCO2 ( CO2);and hemoglobin.

我们在这个观察性、前瞻性、非对照研究中的目的是探求29例腹主动脉瘤手术后患者器官衰竭发生率与术中动脉和门静脉乳酸变化、乙状结肠粘膜内 pH变化、乙状结肠粘膜 PCO2和动脉 PCO2差值（ΔCO2）以及血红蛋白的关系。

In nonsmokers without pulmonary disease at baseline, there were no severe decreases in lung function attributed to Exubera, and high-resolution chest computed tomography revealed no evidence of notable lung changes. Completed phase 2 and 3 studies that followed patients for up to 4 years indicate that the differences over time in pulmonary function changes between patients treated with Exubera and control patients are small, nonprogressive, clinically insignificant, and reverse after discontinuation of Exubera therapy.

Feb。 9， 2006 --尽管一开始对於肺功能影响的顾虑，美国食品药物管理局仍然批准辉瑞药厂生产的吸入性胰岛素Exubera使用於成人第1、2型糖尿病；该核准案於1月27日通过，也就是欧盟核准该药物上市后隔天；自从胰岛素於1920年代被发现以来，吸入型粉状的基因重组人类胰岛素是第一个新的胰岛素投与选择；临床试验数据显示，使用exubera一开始会使肺功能下降，但是并非进行性的，其效果与一般胰岛素相当，而且具有病患顺从性较高的优点。

The histopathologic changes of all these pigs were alike, such as adema of all organs of the body, degeneration of the parenchymatous organs, nonpyogenic encephalitis, pneumonia, and changes of vessel walls.

所有试验猪的病理组织学变化均十分一致，主要表现为全身各器官的水肿及实质器官变性、非化脓性脑炎和肺炎以及血管壁的变化等。

In the past twelve years there have been hundreds of studies showing these nonthermal effects--- such as DNA damage and nonrepair, opening of the blood-brain barrier (allowing toxins and pathogens to reach the brain), lowered immunity, decreased melatonin levels, effects on stress proteins, formation of micronuclei (aberrations in cell nuclei which are often markers for cancer), changes in calcium metabolism affecting communication between cells, changes in brainwave patterns as seen on EEG's, plus effects observed on many different systems of the body.

在过去十二个月里，已有数以百计的研究表明这些非热效应---如DNA损伤和nonrepair ，开放血脑屏障（允许毒素和病原体到达大脑），降低免疫力，降低褪黑激素水平，对应激蛋白，形成的微（畸变细胞核往往是癌症的标志），改变钙代谢的影响细胞之间的沟通，改变脑电波模式脑电图上看到的，加上效果观察许多不同的系统的机构。

Coding and non-coding sequences are expected to have very different patterns of sequence changes because of the following characteristics of coding sequences: biased codon composition, higher conservation, absence of stop codons and frameshifts, higher fraction of synonymous than nonsynonymous substitutions, higher frequency of substitutions corresponding to changes of chemically similar amino acids, higher proportion of mutable contexts.

我们可以预期可转录的序列及不可转录的序列会有相当不同的序列改变特徵，因为可转录的序列有以下特色：偏颇的密码子组成，较高的保存度，有终止密码子和移码的出现，相较於异义取代有较高比例的同义取代，较高的频率出现化学结构相似的胺基酸取代，较高比例的可变之前后序列。

Nonvascular changes included increased apoptosis (in about 16% of biopsies), fibrous proliferation (in about 4% of biopsies), and villous changes (in 11.4% of distal biopsies).

非血管性改变包括细胞凋亡增多（出现于大约16%的活检中），纤维增生（出现于大约4%的活检中）和绒毛状改变（出现于11.4%的活检中）。

Results showed sTGC-CM, which is similar with the effect of hTGC-CM, was able to induce human DPSCs to make odontoblastic changes as indicated by remarkable morphological changes, increased proliferation ability, higher multipotential and colony forming capability, and expression of some odontogenic markers in gene and protein levels,such as DSP, DSPP, DMP1, BSP, OCN, OPN.

结果表明：人牙髓干细胞经过一定时间的猪牙胚条件培养基诱导后，能在细胞形态上和细胞周期上发生改变，能具有更高的克隆形成能力和多向分化能力，能维持更好的干细胞特性，具有更强的增殖能力，表达更高水平的碱性磷酸酶，免疫组化和RT-PCR提示诱导后的牙髓干细胞能在蛋白水平和基因水平表达出一些牙向分化的标志，如DSP、DSPP、DMP1、BSP、OCN、OPN等。

The extinction or appearance of these Ostracoda always occurred in a short time interval, and can be correlated locally and globally, so they are of importance in bioeventstratigraphy. This article listed six such biological events in Qaidam Basin and discussed their causes. The extinction of Cetacella reflected temperature decrease at global scale and changes of palaeoclimate zones during the latest Jurassic and the earliest Cretaceous; The rapid decline of Cypridea in the earliest Cretaceous may be a result of the strikes of small planets; at the latest middle-Eocene Austrocypris became extinct, and at Oligocene Hemicyprinotus disappeared. These events related to the changes of the geological conditions at that time. The explosion of Cyprideis at the middle-Miocene was because the rise of Qinghai-Xizang Plateau which resulted in the dry climate and development of salt lakes.

这些水生生物的绝灭或发生均很迅速，在区域或全球范围内均可对比，具有生物事件地层学意义：Cetacella属的绝灭可能是侏罗、白垩纪之交全球性的古气候降温和气候带变化在柴达木盆地的反映；早白垩世之后Cypridea的迅速衰退是地外因素灾变的结果；中始新世晚期的Austrocypris的绝灭、渐新世Hemicyprinotus的绝灭都与当时地质条件的改变存在著内在的联系；中中新世Cyprideis的爆发推断是青藏高原隆升，导致气候乾燥、湖水咸化的结果；而晚更新世晚期1。

Objective: To observe the age changes of the age changes of the expression of nitric oxide synthase in pterygopalatine ganglion , otic ganglion and the fibers innervating the cerebral vessels of rats.

目的：观察大鼠翼腭神经节、耳神经节及脑底动脉壁神经纤维一氧化氮合酶表达的年龄变化规律。

Particularly the Cretaceous time period is a time of major changes in the Earth Systems demonstrated by major plate tectonic processes, as is the dispersal of Pangea supercontinent, plaeoclimate and paleoceanography changes.

Berriasian～Albian早期，延续时间超过30Ma；而在Thakkhola地区时代为Hauterivian晚期-Albian早期，延续时间约20Ma，在Zanskar地区火山岩屑砂岩仅仅出现在Albian期，延续时间小于10Ma。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。