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Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesions, the loss of fluorescence and ΔQ on enamel surfaces after demineralization. Confocal laser scanning microscopy was used to quantify the mineral content after demineralization.

将30个牙釉质块开窗后分为3组,分别使用含量1 450 mg/L的化钠牙膏、单磷酸钠牙膏和无牙膏的处理液处理,并在体外恒化器龋病模型中进行脱矿循环,定量光导荧光技术分析病损脱矿后的面积、荧光损失和总荧光损失量,激光扫描共聚焦显微镜分析脱矿后矿物质含量变化。

After induction, a depolarizing or non-depolarizing neuromuscular blocking drug can be given intravenously to facilitate tracheal intubation.

吸入诱导:吸入一氧化氮加上强有力的挥发性麻醉剂(如烷、安醚或异醚),能在3-5分钟内诱导麻醉,诱导后可经静脉给予去极化或非去极化的神经肌肉阻滞剂,以利于气管插管。

Relative fitness experiments for the populations of lambda-cyhalothrin-susceptible, NILs-RR and NILs-RS strains of Spodoptera exigua, showed that relative finesses of NILs-RS and NILs-RR were 0.870 and 0.893, in comparison with that of SS strain. The intrinsic rates of natural increase of SS, NILs-RR and NILs-RS were 624.7, 543.6, and 557.8 respectively. There was no significant difference in the fitness between SS and different resistant lambda-cyhalothrin genotypes (NILs-RS and NILs-RR) of Spodoptera exigua.

对构建的甜菜夜蛾敏感种群、近等基因系高效氯氰菊酯抗性种群和近等基因系低抗性种群生命表分析表明,以SS种群为参比,NILs-RS、NILs-RR种群的相对适合度分别为0.870、0.893,抗高效氯氰菊酯不同基因型甜菜夜蛾SS,NILs-RS和NILs-RR三种群净增殖率分别为624.7, 543.6和557.8,无显著差异,表明高效氯氰菊酯的抗药性未引发甜菜夜蛾适合度变化。

These include fluoridated water, fluoride rinses for use at home, and, of course, any commonly used fluoridated toothpaste.

其中包括家用的含饮用水,漱剂,当然,最常用的是含牙膏。

Bone damage can be induced in rats fed with calcium-deficiency diet and fluoridized water in short term, with decreased calcium content, and the changes of chemical element in bone participate in the pathogenesis of fluorosis, and this suggestes that multiple factor is involved in the development of fluorosis.

和低钙可导致大鼠骨损伤,骨中化学元素的改变参与了中毒的发病机制,说明骨症的形成是多因素作用的结果。

Sevoflurane was synthesized from 1,1,13,3,3-hexafluoro-2--propane by halogen-exchange in the presence of an ionic liquid as the solvent and a fluorinating agent .

在离子液体作为反应介质的条件下,以六异丙基氯甲基醚的代反应合成了七醚。

CrO-Y2O3catalysts were prepared by a deposition-precipitation method and tested by fluorinating 2-chloro-1,1,1-trifleuoroethane (HCFC-133a) to synthesize 1,1,1,2-tetrafluoroethane (HFC-134a).

用沉积-沉淀法制备了CrO-Y2O3催化剂,考察焙烧气氛及温度对1,1,1-三-2-氯乙烷(HCFC-133a)气相化合成1,1,1,2-四乙烷(HFC-134a)催化性能的影响。

The application results from fluorination showed microwave heating could accelerate chemical reactions markedly. The reaction time could be shortened 50% at least than that of conventional heating. The relationship between fluorinating agents\' structure and their activity was studied systematically. In addition, an anhydrous KF with higher activity was prepared by using expansion effect of microwave heating. As we known, solvents were very important to reaction. The comprehensive study showed some less polar aromatic solvents could be used as dipolar solvents. In addition, they had better effect than dipolar solvents in some occasions, such as fluorination of chlorobenzaldehydes and chlorinated diphenyl ketones etc. The primary applications of ionic liquids were also studied which indicated reactions with ionic liquids as solvents were more efficient and simple.

研究表明,微波是一种节能高效的加热方式,在微波作用下的卤素交换化反应具有反应速度快、转化率高、选择性好的优点,其反应时间可较常规加热缩短50%以上;同时也系统地研究了化剂种类及制备方式对其反应活性的影响,并利用微波加热的膨化作用制备出了一种活性较高的KF,其活性与喷雾干燥KF相差不大;溶剂对反应具有重要的作用,在此系统地研究了强极性非质子溶剂和中等极性非质子溶剂的应用情况,发现一些中等极性的非质子溶剂如硝基芳烃和氯代芳烃类溶剂在氯代苯甲醛类化合物的化反应中具有比强极性非质子溶剂更好的使用效果。

Results show that as an inorganic material the cuticle of krill has the second absorption function and action on fluoride after it is moulted, which has nothing to do with the living activity of the krill.

结合其它资料,本文还对南极磷虾的富来源及机制进行了探讨。研究结果表明,南极磷虾蜕壳后的残壳对具有二次吸收的功能和作用,其对的富集存在着与生命活动无关的机理。

Order to understand the city Effects of disease area health education and promotion of the 10 districts and counties under the city ward different types of students and residents of the Effects of health education to a questionnaire Investigation, prevention and treatment for the Chongqing Municipal Coal fluorosis to provide a scientific basis.

为了解我市地病病区健康教育宣传的情况,对我市10个区县根据不同病区类型进行了学生和居民的地病健康教育知识进行了问卷调查,为防治重庆市燃煤型中毒提供科学依据。

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推荐网络例句

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。