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As the gas station is an important part of urban natural gas transmission and distribution system, the level of its construction management has a very significant impact on construction quality, project schedule, investment benefit and safe operation of gas station after it is put into service. An important way to improve the construction management of gas station is to constantly innovate the construction management methods and the technical means. Taking a large gas station in Tangshan Harbour Economic Development Zone as research object, where the Building Information Modeling(BIM) technology was applied to the construction management of gas station for the first time, research on the application of BIM technology in the station planning and design, simulation of complex process construction, integrated management of pipeline network, cost control and facility management of gas station was carried out, and a construction management method of gas station based on BIM was proposed. The practice shows that BIM technology can significantly improve the construction management level of gas station, and ensure the realization of construction quality target, schedule target and investment benefit of the station, which further provides reference for the construction management of similar project.

Sixty-six passive continental margin basins around the world were compared comprehensively from the aspect of seismogeology on the basis of plate tectonics. According to their textural and structural differences, passive continental margin basins were classified into seven subdivisions, i.e., rifted basin, non-saline faulted depression basin, saline faulted depression basin, non-saline depression basin, saline depression basin, delta reformed basin and positive reverse deformed basin. The passive continental margin basins around the world have been generated with the formation of Mesozoic and Cenozoic Atlantic and Indian Oceans and they have experienced superimposition of three prototypes, including intra-continental rift in rifting period, intercontinental rift in transitional period and passive continental margin in drifting period. In rifted basins, the petroleum systems are mainly located in the lower lacustrine/marine rift series of strata and the thinner depression series of strata at the upper part are only regional cap-rocks. Large oil and gas fields are mainly concentrated in structural traps of rift series of strata. In non-saline faulted depression basins, hydrocarbon generation and expulsion peaks occur in both upper thicker marine depression series of strata and lower rift series of strata. Reservoirs are formed in the structures of rift series of strata, and oil and gas are highly concentrated at slope fans in depression series of strata. In saline faulted depression basins, large oil and gas fields are mainly distributed in the lagoon carbonate rocks of subsalt series of strata and the deepwater slope fans of suprasalt depression series of strata. In saline depression basins, only petroleum systems in depression series of strata are active, and various traps are developed, such as slope fan, salt structure and bioherm. In non-saline depression basins, large oil and gas fields are mainly located in submarine fan groups of depression series of strata because this type of basins are of narrow continental shelf and steep continental slope. In delta reformed basins, four major ring-like structure belts (i.e., growth faulting-mud diapir-thrust nappe-foredeep gentle slope) are formed from the shore to the deepwater and large oil and gas fields can be formed in each belt. Positive reverse reformed basins are the passive continental margin basins which are influenced by global orogenesis since the Miocene. In this type of basins, oil and gas are concentrated in compressional anticlines of reverse series of strata. Key words: passive continental margin, prototype basin, basin structure, basin classification, large oil and gas field, distribution rules

Battlefield rush repair is an important mean to effectively maintain and quickly restore the technical state of equipment to ensure combat effectiveness. In different combat stages, the specific deployment position of the emergency repair detachment will not only directly affect its own security, but also directly affect the completion of the time limit of the emergency repair task. By analyzing the factors influencing the location selection of equipment emergency repair unit, the evaluation index system of location selection decision was constructed. The combination weighting method of G1 method and CRITIC method (Criteria Importance Through Intercriteria Correlation) was used to determine index weights. Cloud model is used to determine the location decision level of each participant and analyze its advantages and disadvantages. This paper takes three groups of site selection schemes under the same simulation conditions as an example to evaluate the site selection decision-making ability of each participant scientifically. This method provides a new idea for the periodical capability evaluation of wartime equipment rush repair.

The theory of interior corner flow driven by surface tension provides an important support for design of liquid management devices in space. The flow rate, velocity, and liquid position are important factors to determine liquid management efficiency. In practice, due to machining precision or aiming to enhance the mechanical strength, the interior corner is often imperfect with a certain degree of roundedness. In this paper, the influence of corner roundedness on liquid flow characteristics is quantitatively analyzed by combining theoretical and experimental analysis. The results show that with a fixed corner roundedness, the height of liquid is always proportional to the square root of time. The velocity of capillary flow also decreases with the increase of corner roundedness. The present theoretical model is validated by the microgravity experiments based on magnetic compensation. Furthermore, the model is applied to simulate the capillary flow of liquid hydrogen and liquid oxygen. The variations of flow rate under different conditions are obtained, which provides important basic data for the design of liquid management devices for cryogenic propellant.

旨在为大豆油（供注射用）的质量控制及安全评价提供参考，建立了微波消解-电感耦合等离子体质谱( ICP-MS)法测定大豆油（供注射用）中金属元素含量。将0.5 g大豆油（供注射用）加硝酸溶解后，先在100 ℃预消解1 h,再采用微波消解仪进行前处理，通过ICP-MS法在射频功率1 550 W、载气（高纯氩气）流速1.03 L/min、等离子气体流速15.0 L/min、蠕动泵转速0.1 r/s、采样深度10 mm条件下测定14种金属元素含量。应用四极杆碰撞/反应池技术消除多原子离子对待测元素的干扰，以钪(Sc)、锗(Ge)、铟(In)、铼(Re)元素为内标校正基体干扰和漂移。结果表明：该方法14种金属元素的检出限在0.004～0.283 ng/mL之间，定量限在0.012～0.945 ng/mL之间，线性关系良好，相关系数均大于0. 999；仪器精密度良好，相对标准偏差（RSD）在0.38%～5.03%之间，重复性RSD在1.02%～4.62%之间，中间精密度RSD在1.40%～16.21%之间，样品溶液在2～8 ℃条件下保存3 d，稳定性良好，储存期间RSD在0.54%～9.61%之间;低、中、高3个水平的加标回收率在78.87%～112.07%之间，RSD在1.37%～7.08%之间。综上，该方法快速、准确、灵敏度高,可用于大豆油（供注射用）中14种金属元素的同时检测。 Aming at providing reference for the safety control and security evaluation of soybean oil (for injection), a method for the determination of metal elements content in soybean oil (for injection) by microwave digestion-inductively coupled plasma mass spectrometry(ICP-MS) were developed. 0.5 g soybean oil (for injection) was dissolved in nitric acid and then predigested at 100 ℃ for 1 h, pretreated in microwave digestion instrument and measured with ICP－MS under the conditions of radio frequency power 1 550 W, flow rate of carrier gas (high purity argon) 1.03 L/min, flow rate of plasma gas 15.0 L/min, peristaltic pump speed 0.1 r/s and sampling depth 10 mm to determine the content of 14 kinds of metal elements. The use of quadrupole collision/reaction cell technology could eliminate the interference of polyatomic ions with the elements to be measured. Scandium (Sc), germanium (Ge), indium (In) and rhenium (Re) were used as internal standards to correct matrix interference and drift. The results showed that the detection limits of 14 kinds of metal elements were in the ranges of 0.004-0.283 ng/mL.The quantitation limits were 0.012-0.945 ng/mL.The linear relationship for the elements was good with the correlation coefficients being all above 0.999．The precision of the instrument was good and RSD were 0.38%-5.03%. The repeatability RSD were 1.02%-4.62%. The intermediate precision RSD were 1.40%-16.21%. The stability of the sample solution was good when it was stored at 2-8 ℃ for 3 d, with RSD in the range of 0.54%-9.61%. The recoveries of the 14 kinds of metal elements at three levels（low, medium and high）were 78.87%-112.07% and the RSD were 1.37%-7.08%. In summary, the method is rapid, accurate and sensitive, and it can be used for the simultaneous detection of 14 kinds of metal elements in soybean oil (for injection).

蛋黄卵磷脂样品经微波消解，采用电感耦合等离子体质谱法测定样品中15种金属元素含量，对检测条件进行了优化，并进行了方法学考察。结果表明，在射频功率1.55 kW、载气（高纯氩气）流速 1.03 L/min、等离子气体流速15.0 L/min、蠕动泵转速 0.1 r/s、采样深度 10 mm、重复次数 3 次条件下，通过在线加入内标钪(Sc)、锗(Ge)、铟(In)、铼(Re)元素可校正基体效应和干扰，测定汞元素时，加入金元素可降低测定误差；该方法的15 种金属元素线性关系良好，线性相关系数（R）均大于0.999；方法检出限在0.03～0.65 ng/mL之间，定量限在0.10～1.97 ng/mL之间；仪器精密度良好，RSD在0.45%～4.67%之间；重复性RSD在1.78%～8.72%之间；中间精密度RSD在2.24%～9.45%之间；加标回收率在92.67%～132.90%之间, RSD在1.42%～7.00%之间。样品溶液在2~8 ℃条件下保存72 h，稳定性良好，RSD在0.56%～3.93%之间。该方法快速、准确、灵敏度高, 可用于蛋黄卵磷脂中15种金属元素的同时测定。 Egg yolk lecithin samples were digested by microwave and 15 kinds of metal elements in it were determined by inductively coupled plasma mass spectrometry(ICP-MS). The detection conditions were optimized and the methodology was investigated. The results showed that under the conditions of RF power 1.55 kW, flow rate of carrier gas(high purity argon)1.03 L/min, flow rate of plasma gas 15.0 L/min, peristaltic pump speed 0.1 r/s, sampling depth 10 mm and 3 replications, the internal standard solution with Sc，Ge，In and Re were added online for matrix effect and interference correction, and Au was added when determining the content of Hg to reduce the test error. The linearities for the 15 elements of the method were good with the correlation coefficients（R）above 0.999. The detection limit and quantitation limit of 15 elements were 0.03-0.65 ng/mL and 0.10-1.97 ng/mL, respectively. The precisions of the instrument were good with RSD in the range of 0.45%-4.67%. The RSD of the repeatability test was in the range of 1.78%-8.72%.The RSD of the intermediate precision was in the range of 2.24%-9.45%. The recovery rate of the 15 elements was in the range of 92.67%-132.90% with RSD in the range of 1.42%-7.00%. The stability of the sample solution was good and when it was stored at 2-8 ℃ for 72 h, RSD was in the range of 0.56%-3.93%. The method had advantages of fastness, accuracy and high sensitiveness, and it could be used for simultaneous determination of 15 kinds of metal elements in egg yolk lecithin.