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Polyimide films capped with nonreactive phthalimide end groups were synthesized with theoretical number average molecular mass of 10000 and 30000 calculated using the Carothers equation. The effect of end-capper on the thermal properties was studied by investigating the change of the glass transition temperature T(subscript g of films after cured at high temperature.

制备了经邻苯二甲酸酐封端的理论数均分子量为10000和30000的聚酰亚胺薄膜,通过差示扫描热分析测定薄膜高温热处理前后玻璃化温度的变化,研究了PA封端对ODPA/ODA聚酰亚胺薄膜热稳定性能的影响。

Clinical features of measles in infants and children: time of fever was long, peak temperature of the fever was high, rash onset time long, more complications (especially to the younger infants and children); the main complications were pneumonia and enteritis; one patients died with death rate of 1.12%(1/89); compared the patients treated with antipyretics frequently and less frequently prior to hospitalization, the time of rashing and phase of fever had significant difference between the different treatment before hospitalization (P.05); 50 patients were diagnosed as pneumonia or bronchitis, 40% with reduction in absolute lymphocyte.

结果:本组流动人口占44.94%(40/89);年龄组以3岁以下的嬰幼儿为主,占71.91%(64/89),其中8月龄~3岁占56.18%(50/89);符合麻疹计划免疫接种条件75例,接种率为26.67%(20/75),流动人口接种率为7.5%(3/40); 74.39%(61/82)病例发病前均有多家医院就诊史,临床特点:热程长,体温高峰较高,出疹期时间延长,并发症较多;并发症仍以肺炎、肠炎为主;死亡1例,死亡率为1.12%(1/89);院外未频繁使用退热药组和频繁使用退热药组的出疹期和热程比较有显著性差异,P.05;本组50例诊断为肺炎或支气管炎, 40%淋巴细胞绝对值减少。

Using the thermogravimetric analysis method,the effect of carbonization temperature on the ignition behaviour of semicoke was studied: the ignition .

采用热分析方法研究干馏温度对半焦着火方式影响的实验,结果表明:随着干馏温度的升高,油页岩半焦的着火方式将由均相着火转变为多相着火;干馏温度500℃不仅有利于炼制页岩油,从燃烧角度来说,该温度所制取的半焦着火温度低且着火方式为均相着火,因此也有利于锅炉的燃烧。

For the simplist thermal consolidation problem with instantaneous constant surface temperature and uniform initial pore-pressure, analytical solutions of excess pore-water pressure and temperature are derived and compared in detail, respectively. The results show that the thermo-mechanical coupling item in the thermal consolidation equation can be ignored.

2对最基本的地表骤然受常温且初始孔压均布的一维热固结问题,分别求得了考虑和不考虑热力耦合的超静孔压和温度增量的解,并通过详细比较,表明可以忽略热固结方程中热力耦合项对固结的影响。

Salicylic acid may mimic temperature acclimation to some degree by also generating H2O2 and enhancing heat tolerance in mustard (Sinapis alba L.) seedlings.

水杨酸在一定程度上可仿效热锻炼,外源施用SA和热锻炼均可提高芥末幼苗耐热性,同时使体内H2O2含量发生变化。

The thermal decomposition trajectories of s- tetrazine molecule and its five derivatives were simulated by ab initio molecular dynamics method to acquire the possible decomposition pathways and identify their relative importance.

采用从头算分子动力学方法,对均四嗪分子及其5种衍生物分子的热分解轨迹进行了模拟,获得了它们的各种热分解途径及其难易程度。

The chemical composition, crystal morphology, fluid inclusions and thermoluminescent characteristics of non-metallic mineral s such as quartz and carbonate from the Jindoushan gold deposit were studied in detail.

对产于烟台金斗山金矿内的贯通性非金属矿物石英及碳酸盐类的化学成分、晶体习性、流体包裹体和天然热发光特征做了研究,结果表明,矿床的主成矿阶段的环境介质为酸性偏中性,富矿和贫矿石英的热发光曲线均为双峰型,但峰点温度、总积分强度有显著差异。

Toop's model and Miedema method are to be used to calculate the heat of formation of ternary compounds. A projected method is used to obtained the heat of formation of AB_(1-x)G_x. The heat of formation is negative for GaAs_(1-x)P_x and for GaAs_(1-x)N_x compounds in the all range and for GaP_(1-x)gN_x compound in the

我们分别用Pauling和Phillips经验方法及Miedema半经验方法计算[59]得到Ⅲ-Ⅴ族二元合金的生成热,比较三种方法,均只定性与实验结果吻合,但Miedema方法具有准第一原理特点,可以从组元基本特性出发来得到合金生成热的数据;我们把TOOP'S模型引入计算中,并把计算结果投影到Ⅲ族组元总浓度等于所有Ⅴ族组元总浓度的平面上,即计算AB_(1-x)C_x合金系的

Test the warp and weft heat shrinkage rate of unfusible interlining and fusible interlining silk fabric under the same temperature and different times,also under different temperature conditions.

在同一温度不同时刻以及不同温度条件下分别对未粘衬及粘着不同衬料的真丝面料的经、纬向热缩率进行了测试,结果显示,面料本身性能、熨烫冷却后的放置时间、熨烫温度、熨烫粘合温度及粘合衬的种类均会影响面料的热缩率。

Both the bacterial culture and aseptic filtrate showed activities to inhibit some pathogenic fungi including "Alternaria alternata", and "Fusarium graminearum" on activity plates assay. Antagonistic crude protein extract was obtained by 70% ammonium sulphate precipitation, and it was thermostable, unsensible to proteinase K and pepsin, and capable to induce the hypha lysis and cytoplasm condensation of "F. graminearum".

经平皿测试表明,多粘芽孢杆菌P-FS08菌株及其无滤液对烟草赤星病菌、小麦赤霉病菌等多种植物病原真菌均有抑制作用。P-FS08培养液通过70%硫酸铵沉淀得到具有拮抗活性的蛋白粗提液,其具有良好的热稳定性;对蛋白酶K和胃蛋白酶均不敏感;够使小麦赤霉病菌菌丝断裂,原生质浓缩。

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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。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?