暴露

They conducted measurements after 6, 12, 24 and 48 hours of exposure in tadpoles exposed to 25 and 35 mg/l of atrazine.

他们进行测量后， 6 ， 12 ， 24和48小时的暴露在蝌蚪暴露於25日和35毫克/升莠去津。

Reefs, reef-mounds and lime mud mounds are all carbonate buildups, and the reefs and banks are important targets for petroleum exploration The reefs, banks and mounds should be divided from each other not only in theory, but also in exploration practice, because of so many differences in sedimentary compositions, fabrics, environments, distribution in time and space, and the characteristics of petroleum geology If the original reef or bank itself was fine reservoir rocks, then it would become a better reservoir after the reservoirconstructive diagenesis The formation of a high quality carbonate reservoir is controlled by two factors: the sedimentary microfacies and the reservoirconstructive diagenesis The first is the basis for the formation of a high quality reservoir, and with the high energy reefbank facies as the best; the latter includes the cataclasis, the dolomitization and the karstification The dolomitization and karstification are the best for the formation of a high quality reservoir The karstification has the widest distribution, profoundest effect, and plays a vital role in the high quality reservoir forming The karst types are quite rich in the limestone reef or bank reservoir, including synsedimentary karst, penesedimentary karst, supergene karst and hydrothermal karst, and so does the dolomitization reef or bank reservoir The formation mechanism of synsedimentary karst and penesedimentary karst is related to the short time exposing and leaching of the cyclical highfrequency shallowupward sequence when the reefs or banks are forming The supergene karst is controlled by the exposing and leaching of tertiary cyclic sequence type I interface after the reefs or banks forming Thus, there developed a great deal of secondary corrosion pores, corrosion fractures and huge caves besides some original pores remained in the reef and bank reservoir Scarcely there are any original effective pores in reefmounds and lime mud mounds, especially in senkes among mounds, but secondary pores could be formed by karstification, and there would likely develop source rocks with high organic abundance

礁、礁丘、丘同属碳酸盐建隆，礁、滩是重要勘探目的层。但各自在沉积组分、组构、环境和时空分布，以及油气地质条件上迥然不同，因而无论从理论还是勘探实践上，都有必要将其各成体系划分开来。礁滩自身为好储集岩，当建设性成岩作用叠加后可形成好的储层。碳酸盐岩优质储层形成，主要受沉积微相与建设性成岩作用两大因素控制。前者是基础，并以高能的礁滩相带为最好；后者主要包括破裂、白云石化和溶蚀三大类，并以白云石化或溶蚀为最优，其中的溶蚀分布最广泛、影响最深刻而对优质储层形成起决定性作用。礁滩储层中的古岩溶类型最为丰富多彩，包括同生期、准同生期、表生期和埋藏期热流体岩溶的所有类型，白云岩化礁滩体也不例外。其中，同生准同生期岩溶的形成机制与礁滩沉积时高频层序旋回向上变浅序列的短暂暴露淋溶有关，表生期岩溶则受控于礁滩沉积后三级层序旋回Ⅰ型界面的暴露淋溶。由此，导致礁滩储层中除了可以也是唯一保存原生孔隙外，还发育了次生溶蚀孔洞缝和大型溶洞。礁丘、灰泥丘尤其是丘间洼地中发育高有机质丰度烃源岩；它们自身没有有效的原生孔隙，但岩溶作用可以形成次生孔隙。

Based on the four steps of risk assessment that is hazard identification,hazard characterization,exposure assessment and risk characterization,the risk assessment of bisphenol A is expound in this paper.The results show the potential human exposure to bisphenol A is negligibl...

根据风险评估理论的四个步骤，即危害鉴定、危害特征描述、暴露评估和风险特征描述，对双酚A进行风险评估，结果表明人体暴露于双酚A的量是微不足道的，没有对人体健康构成已知的风险。

Evaluate exposure data based on health hazard studies and provide interpretations of exposures in light of OSHA, EPA, and other environmental and occupational health regulations and guidelines. Recommend courses of action to control exposures and reduce the potential for injury, illness, and/or property loss.

Mr。 Hsi以健康危害研究为基础对暴露数据进行评价，根据OSHA、EPA和其他环境和职业健康法规和导则进行解释说明，并提出建议来控制暴露和减少受伤、疾病和财产损失。

Mr. Barr evaluates exposure data based on health hazard studies and provides interpretations of exposures in light of OSHA, EPA, and other environmental and occupational health regulations and guidelines. He recommends courses of action to control exposures and reduce the potential for injury, illness, and/or property loss.

Mr。 Barr以健康危害研究为基础对暴露数据进行评价，根据OSHA、EPA和其他环境和职业健康法规和导则进行解释说明，并提出建议来控制暴露和减少受伤、疾病和财产损失。

Objective To understand the distribution and immune activation status of T lymphocyte subsets in highly exposed HIV1 and persistently seronegative individuals, and explore the immunologic mechanism of nonsusceptibility to HIV1 by sexual transmission in HEPS individuals.

目的 了解经性传播途径高暴露HIV1持续血清阴性者淋巴细胞亚群表达及其免疫活化状态，探讨经性途径高暴露HIV1不易感的免疫基础。

The first one is approach difference. More than 90% Chinese patients prefer to accept infra-axillary approach for they thought that the incision scar is unobvious. But western patients prefer to accept peri-areola approach and seldom accept infra-axillary approach. For they thought that they like to expose their infra-axillary and then the scar would be found more often.

切口选择：中国求美者大部分约90%愿意选用腋下切口，觉得腋下切口隐蔽；而西方求美者大多选用乳晕切口，很少用腋下切口，因为西方人穿着比较暴露，腋下暴露的机会比较多，会让人看到手术痕迹。2。

All operating room personnel should avoid exposure to roentgenograms. Proper lead-lined aprons should be worn beneath sterile operating gowns. Thyroid shields, lead-impregnated eyeglasses, and rubber gloves are now available to decrease exposure further.

手术室中全体人员应避免暴露于放射线下，无菌手术衣里可穿着专门的铅围裙，佩带甲状腺防护带及含铅的眼镜和橡皮手套，以减少在放射线下的暴露。

All operating room personnel should aoid exposure to roentgenograms. Proper lead-lined aprons should be worn beneath sterile operating gowns. Thyroid shields, lead-impregnated eyeglasses, and rubber gloes are now aailable to decrease exposure further.

手术室中全体人员应避免暴露于放射线下，无菌手术衣里可穿着专门的铅围裙，佩带甲状腺防护带及含铅的眼镜和橡皮手套，以减少在放射线下的暴露。

There was a positive linear relation between the MDA content and exposure time, during the 7 days at 0.54mg/L.

在0.000.54mg儿的暴露浓度范围内，SOD和POD酶的活性都随暴露浓度增高而降低。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。