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The partly cold-adaptation stratagem of the high altitude amphibian tadpole were researched in the laboratory by analyzing the high altitude amphibian tadpole of Scutiger boulengeri mainly on endpoints related to the dynamic variation of the micro-spatial behavior distribution patterns, the experiment of the temperature tolerance, and the enzyme content and activity of the lactic acid dehydrogenase isozyme in special temperature condition.The behavior distribution of the Scutiger boulengeri t...

西藏齿突蟾蝌蚪在不同温度的行为分布是一连续、动态过程,需用多种检验方法综合利用才能进行判断;在15℃,除低海拔分布的西藏齿突蟾种群外所有实验物种蝌蚪均符合负二项分布、NeymanⅡ型分布;在10℃,高海拔两栖蝌蚪均符合负二项分布、NeymanⅡ型分布;在5℃、0℃低温时,高海拔两栖不同分组的西藏齿突蟾蝌蚪的负二项分布、NeymanⅡ型分布均呈现明显差异,这可能与高海拔两栖蝌蚪在低温条件下通过不断地改变其行为分布方式来避免自身被冻伤有关。

He does not say what he thinks being transcendental means, and he says he is not going to consider 'whether, in general, such a form of argument is permissible or fruitful'.6 He says the argument is also transcendental in another (presumably non-Kantian) sense: in proving the existence of a class of entities different in kind from 'sensa'.

他没有说他所认为的&先验&的意思,但他说他不会考虑&一般来说,这论证是否是可允许的和富有成效的&这问题,他说这论证有另一非康德的意义:提供对一实体的存在的证明。

In the practice it plays an important part in insect surveys, the choice of grain method, the improvement of grain storage level, the extension of storage time and the delay of grain quality deterioration. 1 Research on stored product insects in large warehouse 1.1 Community composition and structure analysis of stored product insects in large warehouse By means of GJ89 type probe trap investigation of stored grain insects and analysis of community composition and structure of large warehouse were carried out in Chongqing Beibei State Grain Reserve Depot. The results showed that there were main Lipocelis botrychophilus、 Cryptolestes ferrugineus、 Tyrophagus putrescentiae and Sitophilus zeamais etc in large warehouse

高大平房仓储粮昆虫生态学研究 1.1 高大平房仓散装储粮昆虫群落组成及结构分析使用GJ89型粮虫陷阱检测器对中央储备粮重庆北碚直属库高大平房仓储粮昆虫进行系统调查,并对其群落组成及结构进行了分析,结果表明高大平房仓储粮昆虫主要有书虱Lipocelis botrychophilus、锈赤扁谷盗Cryptolestes ferrugineus、腐食酪螨Tyrophagus putrescentiae和玉米象Sitophilus zeamais等4,其中书虱为绝对优势种群;在粮堆垂直方向0~50cm 4昆虫发生最多,100~150cm发生最少;4昆虫在粮面0~50cm丰富度、优势度、多样性及均匀度4项指标均高于50~100cm和100~150cm,水平方向6个区域各项指标差异不大。

The main purpose of this thesis was the chemistry composition analysis and research of Sorbus tianschanica . This thesis first made preparation of an experiment in detail to the fruit of the sorbus tianschanica to Xinjiang ,then mainly aimed to research flavonoid compounds of the sorbus tianschanica.

本论文主要对新疆天山花楸的黄酮化合物进行了研究,首先对天山花楸的果实进行了预实验,然后对天山花楸枝叶的黄酮化合物进行了定性研究及对其不同有效部位的黄酮化合物进行了较为详细的定量研究。

The discriminant analyses,of 28 granitic intrusives distributed in the periphery of the stanniferous granite bodies,by using the Keluo-Lazi diagram,SiO2-Al2O3+Na2O+K2O-CaO+MgO+FeO diagram,Fe-Na+K-Mg diagram and K-Na-Ca diagram,,indicate that the four diagrams can be applied to...

对分布于含锡花岗岩岩体外围的28个可能含锡岩体进行科勒-拉兹图解、S iO2-A l2O3+Na2O+K2O-CaO+MgO+FeO图解、Fe-Na+K-Mg图解和K-Na-Ca图解判别后发现,壳源酸性花岗岩完全可以用四图解进行含锡性判别,并且完全符合实际地质特征,大部分都有希望找到伴生壳源型锡矿床;而幔源中基性花岗岩的含锡性却不适用上述四个图解进行判别。

This paper demonstrates distribution features and geochemical significance of biomarker in Tangyuan Depression and crude oil,and indicates that,abundant n-alkane,isoprenoid-n-alkane,terpenoid and steride are tested in Tangyuan Depression .

主要论述了汤原断陷生物标志化合物及原油生物标志化合物的分布特征及其地球化学意义,指出汤原断陷内检出丰富的正烷烃、异戊二烯烷烃、萜化合物及甾化合物。

The two-photon absorption cross-sections of these styryl derivatives were determined by Z-scan technique, and the benzothiazolium derivatives exhibited the largest TPA cross-sections (10〓s·cm〓/photon) and the best power limiting ability at high operable incident intensity. The results show that the benzothiazolium derivatives are promising organic compounds as two-photon absorption optical limiting materials. 2. Several organic dyes active to 800nm femtosecond laser with D-π-A structure were designed and synthesized.

研究了它们的上转换荧光、上转换激射和光限幅行为,通过改变染料分子共轭体系的大小,首次实现了在576nm-635nm范围内的双光子上转换激光波长的调节,其中噻唑啉碘盐二苯乙烯化合物的双光子上转换激射峰(576nm)是迄今在1064nm皮秒激光作用下能够得到的最短波长的激光;阴离子显著改变上转换激射效率,但对上转换荧光峰和激射峰的位置影响很小;增加溶液的浓度,上转换荧光光谱和激射光谱红移,并在一定的浓度范围内,能够有效的提高上转换激射效率;利用Z-扫描技术测定了染料分子的双光子吸收截面,发现苯并噻唑染料分子的双光子吸收截面高达10〓s·cm〓/photon,而且在较大的入射光强范围内,这染料分子具有较大的光限幅能力,是一作为双光子吸收光限幅材料很有潜力的染料分子。

The second group are the mixtures of Jurassic coal-formed oils and Cretaceous-derived oils. The carbon isotope, n-alkanes and isoprenoids compositions of these oils are similar to core extracts from Jurassic coal measures. However, sterane and terpane compositions of these oils show affinity to Cretaceous source rocks. It is deduced that coal-formed oils dissolved the biomarker-rich Cretaceous bitumen of relatively low thermal maturity, and overprinting occurs during oil migration.

第二原油具有侏罗系煤系烃源岩与白垩系湖相泥质烃源岩混源的特点,这原油的碳同位素组成、正构烷烃分布特征和姥植比等均表现出煤成油的特征,但甾、萜烷烃化合物组成与白垩系烃源岩接近,推测是由于侏罗系煤成油在向上运移成藏过程中,受到成熟度相对较低、生物标志物相对丰富的白垩系烃源岩的浸析作用所致。

We provided biomimetic synthetic methods for tetrahydro-β-carboline by using the benzimidazoline as a new tetrahydrofolate coenzyme model with tryptamine as nucleophile reagents under the condition of acid.

由四氢-β-咔啉化合物,可制得多种具有较好抗病毒、抗菌和抗肿瘤活性的β-咔啉生物碱,因而四氢-β-咔啉化合物的合成受到人们的广泛关注。

Then hierarchical cluster analysis is adopted to classify all the 37 wool-like fabrics into 5 groups: warp double wool-like fabrics, elastic wool-like fabrics, thin wool-like fabrics, heavy wool-like fabrics and textureless wool-like fabrics.

在以上分析的基础上,运用主因子分析所建立的仿毛织物风格评价体系、相关性分析所揭示的仿毛织物风格显著影响因素、系统聚分析得到的仿毛织物别特征等,指导重经和弹性仿毛织物设计并试样。

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推荐网络例句

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了

The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.

世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。