全文获取类型
收费全文 | 467篇 |
免费 | 11篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 2篇 |
综合类 | 2篇 |
化学工业 | 77篇 |
金属工艺 | 55篇 |
机械仪表 | 21篇 |
建筑科学 | 2篇 |
矿业工程 | 4篇 |
能源动力 | 20篇 |
轻工业 | 10篇 |
水利工程 | 5篇 |
石油天然气 | 11篇 |
无线电 | 22篇 |
一般工业技术 | 117篇 |
冶金工业 | 55篇 |
原子能技术 | 29篇 |
自动化技术 | 47篇 |
出版年
2023年 | 2篇 |
2022年 | 9篇 |
2021年 | 29篇 |
2020年 | 12篇 |
2019年 | 13篇 |
2018年 | 13篇 |
2017年 | 10篇 |
2016年 | 14篇 |
2015年 | 10篇 |
2014年 | 18篇 |
2013年 | 20篇 |
2012年 | 25篇 |
2011年 | 31篇 |
2010年 | 21篇 |
2009年 | 18篇 |
2008年 | 18篇 |
2007年 | 24篇 |
2006年 | 10篇 |
2005年 | 17篇 |
2004年 | 4篇 |
2003年 | 13篇 |
2002年 | 5篇 |
2001年 | 8篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 9篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1987年 | 4篇 |
1985年 | 4篇 |
1984年 | 3篇 |
1982年 | 2篇 |
1981年 | 7篇 |
1980年 | 4篇 |
1979年 | 5篇 |
1978年 | 4篇 |
1977年 | 8篇 |
1976年 | 10篇 |
1975年 | 9篇 |
1974年 | 6篇 |
1973年 | 6篇 |
1972年 | 2篇 |
1971年 | 4篇 |
1970年 | 3篇 |
1968年 | 7篇 |
1965年 | 2篇 |
1958年 | 1篇 |
排序方式: 共有479条查询结果,搜索用时 15 毫秒
11.
Volodymyr I. Ponomaryov 《Journal of Real-Time Image Processing》2007,1(3):173-194
The paper presents a review of the author’s own results obtained in the last several years. Some examples of real-time processing
of 2D and 3D images are described. In particular, we discuss the noise model and objective criteria that can be applied to
characterize the performance of the processing algorithms. Several proposed algorithms based on RM approach are compared with
other known ones, demonstrating the advantages in noise suppressing and preservation of fine image details and edges. A number
of 2D and 3D image denoising filters are implemented on DSP, realizing real-time mode in the image processing. The performances
of the proposed processing algorithms and the known ones are discussed and evaluated here.
相似文献
Volodymyr I. PonomaryovEmail: |
12.
Reinhard Miller Dmitri Grigoriev Jürgen Krägel Alexander V. Makievski Valentin B. Fainerman Volodymyr I. Kovalchuk Libero Liggieri Francesca Ravera Michele Ferrari Eva Santini Giuseppe Loglio Victoria Dutschk Thodoris Karapantsios 《Microgravity science and technology》2006,18(3-4):104-107
The utilisation of particle-surfactants nanostructures as stabilising agents represents today the technologic and scientific frontier in the stabilisation of liquid films in emulsion and foams. This topic will be addressed by the proposal STEFAN (STabilisation of Emulsions and FoAms by Nanoparticles), proposed by European groups in the framework of the ESA AO-2004 for Life and Physical Sciences and Applied Research projects Similarly to what can be observed for surfactant-stabilised emulsions and foams, microgravity provides ideal conditions for the investigation of the hierarchy of involved objects: interfacial layer, liquid film, dispersed systems foam or emulsion. Microgravity experiments are planned by refurbishing the Experimental Container FASES for the ISS Fluid Science Laboratory and the facility FASTER for the European Drawer Rack, already under development in existing research programmes. Here the scientific guidelines of the project are presented together with examples and preliminary results on the effect of nano-particle-surfactant structures adsorbed at liquid interfaces. First experimental results have been achieved for particle monolayers at the water/air interface and a thermodynamic model was derived to describe the obtained surface pressure-area isotherms. 相似文献
13.
Alexander V. Makievski Volodymyr I. Kovalchuk Jürgen Krägel Madine Simoncini Libero Liggieri M. Ferrari Piero Pandolfini Giuseppe Loglio Reinhard Miller 《Microgravity science and technology》2005,16(1-4):215-218
The present work shows the first experimental and theoretical results for investigations on the rheology of liquid films. The experiments are planned to be performed under microgravity conditions. This environment will allow forming films of different thickness, which is impossible under ground conditions due to drainage. Then the films are forced to harmonic oscillations of the film area so that the film elasticity can be measured as a function of frequency. The presented theoretical model demonstrates the main relationships to be solved under corresponding boundary conditions 相似文献
14.
A. Kalinov A. Kossatchev A. Petrenko M. Posypkin V. Shishkov 《Electronic Notes in Theoretical Computer Science》2003,82(3):500-514
The paper presents a novel approach to automated compiler test suite generation based on the source level specification. Several coverage criteria are introduced. The application of the proposed methodology to testing the realistic programming language is discussed. 相似文献
15.
T. V. Kulevoi R. P. Kuibida S. V. Petrenko D. N. Seleznev V. I. Pershin V. A. Batalin A. A. Kolomiets 《Instruments and Experimental Techniques》2002,45(3):297-300
The Metal Vapor Vacuum Arc (MEVVA) ion source and its modifications are investigated at the Institute of Theoretical and Experimental Physics (ITEP). In a series of the experiments, the possibility of increasing the charge state of the generated uranium ion beam was revealed. The charge state increases as a result of developing a high-current vapor vacuum arc discharge from the source cathode to an auxiliary anode located in an increasing axial magnetic field. The uranium ion beam with a total current of 150 mA was obtained, U7+ uranium ions being 10% of the current. 相似文献
16.
17.
Douglas Bessette Michelle Rutty Grant Gunn Volodymyr Tarabara Robert Richardson 《Journal of Great Lakes research》2021,47(1):226-235
Using the psychometric paradigm of risk in conjunction with surveys of the Michigan public (n = 638) and a regional planning organization (n = 65), we examine the perceived risk and concerns associated with underwater oil pipelines, the Enbridge Line 5 pipeline in particular, and oil spills under ice. The fate of Line 5 is heavily debated in Michigan, specifically the portion that traverses the Straits of Mackinac, which can be ice-covered for months. Scant literature examines how individuals perceive the risk associated with Line 5, its alternatives, or potential spills in open water or under ice. Here we identify considerable concern regarding both the pipeline and the potential for spills under ice on behalf of the public, and increased concern about spills under ice on behalf of the planning organization. Organization members' concerns are significantly predicted by beliefs about the difficulty in remediating spills, however not by beliefs about spills' likelihood, difficulty in detection, noticeability, or consequences. Our results identify the need to better examine and communicate the risks associated with underwater pipelines and spills, both in open water and under ice, as well as options for remediating oil captured under ice. Furthermore, we recommend the adoption of decision-making and risk governance processes that explicitly expand analysis of the social, economic and environmental tradeoffs of underwater pipelines such as Line 5. 相似文献
18.
19.
Béatrice Fuster Deborah Houssin-Agbomson Simon Jallais Elena Vyazmina Guy Dang-Nhu Gilles Bernard-Michel Mike Kuznetsov Vladimir Molkov Boris Chernyavskiy Volodymyr Shentsov Dmitry Makarov Randy Dey Philip Hooker Daniele Baraldi Evelyn Weidner Daniele Melideo Valerio Palmisano Alexandros Venetsanos Jan Der Kinderen 《International Journal of Hydrogen Energy》2017,42(11):7600-7607
Hydrogen energy applications often require that systems are used indoors (e.g., industrial trucks for materials handling in a warehouse facility, fuel cells located in a room, or hydrogen stored and distributed from a gas cabinet). It may also be necessary or desirable to locate some hydrogen system components/equipment inside indoor or outdoor enclosures for security or safety reasons, to isolate them from the end-user and the public, or from weather conditions.Using of hydrogen in confined environments requires detailed assessments of hazards and associated risks, including potential risk prevention and mitigation features. The release of hydrogen can potentially lead to the accumulation of hydrogen and the formation of a flammable hydrogen-air mixture, or can result in jet-fires. Within Hyindoor European Project, carried out for the EU Fuel Cells and Hydrogen Joint Undertaking safety design guidelines and engineering tools have been developed to prevent and mitigate hazardous consequences of hydrogen release in confined environments. Three main areas are considered: Hydrogen release conditions and accumulation, vented deflagrations, jet fires and including under-ventilated flame regimes (e.g., extinguishment or oscillating flames and steady burns). Potential RCS recommendations are also identified. 相似文献
20.
Gunka Volodymyr Shved Mariia Prysiazhnyi Yuriy Pyshyev Serhiy Miroshnichenko Denis 《国际煤炭科学技术学报(英文)》2019,6(1):63-73
International Journal of Coal Science & Technology - The study reviews the process of oxidative desulphurization of high-sulphur Ukrainian lignite, which was performed by coal treatment using... 相似文献