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81.
监测水中石油类物质的目的是用来控制工业废水和生活污水的污染。对检测水中石油类物质的常用3种方法进行了对比研究,重点对应用面较宽、正在推广的红外分光光度法进行了研究,分析了影响该方法实验精度的主要因素,并提出了切实可行的改进措施,取得了良好的实验效果。 相似文献
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This article presents an overview of the recently published American Petroleum Institute (API) Recommended Practice 579, which covers fitness-for-service assessment of pressure equipment in petrochemical and other industries. Although API 579 covers a wide range of flaws and damage mechanisms, including local metal loss, pitting corrosion, blisters, weld misalignment, and fire damage, the emphasis of the present article is on the assessment of crack-like flaws. The API 579 procedure for evaluating cracks incorporates a failure assessment diagram (FAD) methodology very similar to that in other documents, such as the British Energy R6 approach and the BS 7910 method. The API document contains an extensive compendium of K solutions, including a number of new cases generated specifically for API 579. In the initial release of the document, API has adopted existing reference stress solutions for the calculation of Lr in the FAD procedure. In a future release, however, API plans to replace these solutions with values based on a more rational definition of reference stress. These revised reference stress solutions will incorporate the effect of weld mismatch. In addition to the Appendices of K and reference stress solutions, API 579 includes appendices that provide guidance on estimating fracture toughness and weld residual stress distributions. Over the next few years these appendices will be enhanced with advances in technology. Recently, API has entered into discussions with the American Society of Mechanical Engineers (ASME) to convert API 579 into a joint API/ASME fitness-for-service guide. 相似文献
86.
B.K. Sharma O.S. Tyagi M.K.S. Aloopwan S.D. Bhagat 《Petroleum Science and Technology》2013,31(3-4):249-272
ABSTRACT NMR and FTIR spectroscopic techniques were used to investigate the effect of different solvent extraction schemes on the composition and chemical nature of species of vacuum residues of two Indian crude oils (namely Jodhpur and Heera) extractable into polar (ethyl acetate) and non-polar (n-pentane and n-heptane) solvents. The obtained soluble fractions were found to consist of mainly simple aliphatic and naphthenic ring structures, while insoluble fractions consisted primarily aromatic compounds. The results were used to draw inferences on the relative utility of different extraction schemes to upgrade vacuum residues as feedstocks for secondary conversion processes in petroleum industry. 相似文献
87.
杨寿山 《江汉石油职工大学学报》2010,23(1):36-38
在新中国成立60周年的光辉历史中,我国石油工业得到高速发展,已经跨入世界先进产油国家中前五位,需要培养更多石油行业现代科技人才。概述新中国石油工业高速发展,总结江汉油区石油勘探开发创新实践,阐明科学发展观在石油工业中的重要指导作用,旨在为石油行业现代科技人才的培养指明努力的方向。 相似文献
88.
Imad Jabir 《Energy Economics》2001,23(6):4126
Tremendous political pressure is being exerted on the US government by different political parties to diversify its sources of foreign oil supplies by switching from the reliance on OPEC's oil to that originating from non-OPEC nations. Without a doubt, such a shift would adversely impact the market share of some OPEC members, particularly Saudi Arabia, Venezuela and Nigeria. These countries should therefore consider seriously the negative impact of this scenario and consequently formulate individual or joint production policies aiming at protecting their oil market share. To help OPEC achieve this objective, there is a need to estimate the demand function of US oil imports. This paper proffers an estimate of such a function, taking into account, among other variables, the impact of US Strategic Petroleum Reserve (SPR). 相似文献
89.
用粗C9合成深色C9石油树脂 总被引:3,自引:0,他引:3
粗C9馏份在2.0%的三氯化铝催化下于40℃聚合反应3h,得到软化点为146℃,得率为62.6%,色泽为17的深色C9石油树脂。 相似文献
90.
Mohmmad A. Al-Mayyahi Andrew F.A. Hoadley Nicholas E. Smith G.P. Rangaiah 《Fuel》2011,90(12):3577-3585
Blending of different crude types is frequently used in petroleum refineries to improve their profitability and products yields. However, energy consumption and consequential CO2 emissions strongly depend on the types of crude being processed. The trade-off between CO2 emissions and economic objectives, such as net revenue, is investigated for cases of different crude blends using the multi-objective optimization approach. The first objective is the minimization of CO2 emissions whilst the second objective is maximizing the net revenue from the crude distillation unit (CDU). A rigorous model is used to estimate CO2 emissions from different sources within the CDU. This emissions model incorporates pinch analysis for heat integration, to optimize the distribution of utilities related to emissions. Blends of two crudes, 36 API and 27.7 API, are used as feedstock to a rigorous CDU model of the atmospheric crude tower, vacuum tower and heat exchanger network. Lighter crude blends recorded higher CO2 emissions and net revenue compared with the heavier blend due to the greater distilled fraction. However, CO2 emissions did not vary linearly with the fraction of each crude, as the heat exchanger network also influenced the degree of heat recovery and consequently the level of CO2 emissions. The multi-objective solutions show the influence of all 13 of the process variables on the objectives. 相似文献