沥青

The features of molecular structure of aromatics, resins and asphaltenes were investigated by ruthenium-ion-catalyzed oxidation, where involatile acid products were methylated with excess diazomethaneether and volatile acids were esterified with phenacyl bromide.

利用钌离子催化氧化方法对大港减压渣油芳香分、胶质和庚烷沥青质进行了选择性降解，通过GC、GC-MS等分析手段对降解反应产物中一元正构脂肪酸、α，ω-二元正构脂肪酸和苯二～六元羧酸的含量和分布分别进行了定量分析。

Steam jacketed valves are available to handle highly viscous media such as tars and pitches.

可提供蒸汽套阀门来处理高粘性流体介质，如焦油和沥青。

A combinational PPD, SL2, is devdoped, comprising 2 EVA polymers, a high molar mass polymer of long chain alkyl acrylate, a tercopolymer with strong polar functionalities, and a resin/asphaltene modificator.

研制了由2种EVA、一种高分子量聚丙烯酸高级醇酯、一种具强极性基的三元共聚物及胶质沥青质改性剂组成的复配降凝剂SL2。

Many kinds of diseases such as subgrade depression, water scouring, slide, mudding, asphalt pavement raveling, stripping, map cracking and cement concrete pavement pumping, faulting, fracture are to do with the erosion of surface and underground water to some extent.

大多数路基沉陷、冲刷、坍塌、翻浆，沥青路面松散、剥落、龟裂，水泥混凝土路面唧泥、错台、断裂等病害，都不同程度地与地表水和地下水的侵蚀有关。

Regarding asphaltenes, the oxidative degradation was carried out in this work, including species of n-C〓 asphaltenes, crude oils and oilsands. The oxidation reagents include NaIO〓/NaH〓PO4 and 30%H〓O〓/CH〓COOH.

实验结果表明在沥青质的红外分析中，吸收因子Z可以较好排除成熟度差别大的影响，能应用于母质干酪根类型的判别。

The steam and nitrogen push uses steam as the heat source ,extra heavy oil or bitumen has been mobilized by conductive heating and rely on the action of gravity of condensed liquid to recovery heavy oil. Because nitrogen is noncondensible gas and its density is lower, nitrogen rise and accumulates in the top of the reservoir.

蒸汽―氮气辅助重力泄油的开采机理是以蒸汽作为热源加热油层，使高粘度的原油、沥青获得较好的流动性，利用气体和液体由于密度不同而产生的垂向分异作用，靠油的重力开采。

Finally, the multi-layer elastic system theory is employed to analyze the pavement response under the nonuniform load.

最后根据叠加原理，利用弹性层状体系理论对非均布荷载作用下的沥青路面进行计算分析。

Montmorillonite/styrene–butadiene–styrene modified bitumen composites were prepared by melt blending with different contents of Sodium montmorillonite and organophilic montmorillonite.

因此，提高SBS改性沥青的耐老化性对于延长沥青路面的使用寿命具有重要的意义。

In this paper,the mechanical properties of the old PCC pavement structure overlaid with AC was analyzed with ANSYS,a software for finite element analysis,and the influence of interlayers,depth of AC-overlay and modulus of AC-overlay was taken account.According to the study it could be concluded that in order to retard the reflective cracking the interlayer should be put below the overlayer and the interlayer of high modulus can take effect well.

结合试验路实体工程，采用有限元方法分析了土工布、玻璃纤维网对旧水泥混凝土路面沥青混凝土加铺层复合式路面结构的内力影响，发现为防治旧PCC路面的接缝/裂缝在AC加铺层内产生反射裂缝，宜在加铺层底部铺设夹层，且模量较大的玻璃纤维网效果更好。

The paper adopts some methods such as gas composition, carbon isotope, systematical analyzing and testing of reservoir bitumen biomarker from high evolutional natural gas and quantitative calculation of mixed gas, illustrates that natural gas from the section Ⅱ of Jialingjiang formation is mainly attributed to sapropel type organic matter gas of Permian, comes from carbonatite hydrocarbon rocks Permian which most of them are overmature, its main gas source has nothing to do with carbonatite hydrocarbon rocks of Jialingjiang formation themselves, presents in geochemistry characteristics of oil type cracked gas.

摘要通过对川中－川南过渡带西部的磨溪－潼南地区嘉二段天然气组成、碳同位素组成、高演化天然气储层沥青生物标志化合物的系统分析测试和混合成因气的定量估算，阐明了该区嘉二段天然气主要属于二叠系腐泥型有机质成因气，来源于二叠系过成熟为主的碳酸盐岩烃源，主力气源与嘉陵江组自身的碳酸盐岩烃源无关，并具有油型裂解气的地球化学特征。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。