全文获取类型
收费全文 | 201篇 |
免费 | 6篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 6篇 |
化学工业 | 43篇 |
金属工艺 | 5篇 |
机械仪表 | 7篇 |
能源动力 | 19篇 |
轻工业 | 10篇 |
石油天然气 | 1篇 |
无线电 | 7篇 |
一般工业技术 | 16篇 |
冶金工业 | 13篇 |
原子能技术 | 57篇 |
自动化技术 | 24篇 |
出版年
2022年 | 8篇 |
2021年 | 3篇 |
2020年 | 8篇 |
2019年 | 17篇 |
2018年 | 22篇 |
2017年 | 14篇 |
2016年 | 18篇 |
2015年 | 13篇 |
2014年 | 10篇 |
2013年 | 14篇 |
2012年 | 7篇 |
2011年 | 8篇 |
2010年 | 23篇 |
2009年 | 13篇 |
2008年 | 4篇 |
2007年 | 3篇 |
2006年 | 1篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1979年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有208条查询结果,搜索用时 15 毫秒
31.
Vahabzadeh Nosrat-Ali Boochani Arash Elahi Seyed Mohammad Akbari Hossein 《SILICON》2020,12(9):2165-2178
Silicon - Thermodynamic stability, electronic and optical properties of the Zr2TiSi compound in the bulk and its [111] films have been investigated, based on the density functional theory (DFT)... 相似文献
32.
33.
34.
35.
36.
37.
Safari M. Hamidipour S. Elahi S. H. Tahmasbi V. 《Transactions of the Indian Institute of Metals》2020,73(4):831-841
Transactions of the Indian Institute of Metals - In this paper, creep age forming of aluminum 7075 tailor-machined blanks is experimentally studied. As there are two different thicknesses in a... 相似文献
38.
![点击此处可从《IEEE/CAA Journal of Automatica Sinica》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Arezou Elahi Alireza Alfi Hamidreza Modares 《IEEE/CAA Journal of Automatica Sinica》2019,6(3):667-675
This paper presents a distributed control protocol for consensus control of multi-agent systems (MASs) under external disturbances and network imperfections, including communication delay and random packet dropout. To comply with the discrete nature of networked systems, in contrast to most of the existing work for MASs under network imperfections, the agents are modeled by discrete-time dynamics. The communication network is considered to be undirected, its delay is considered to be time-varying but bounded, and its packet dropout is modeled by a Bernoulli distributed white sequence. Sufficient conditions in terms of linear matrix inequalities (LMIs) for asymptotic mean-square consensus stability are derived under network imperfections without considering external disturbances. A desired disturbance attenuation level in the presence of both external disturbances and network imperfections is also provided. A simulation example is given to verify the effectiveness of the proposed approach in coping with network imperfection and disturbances. 相似文献
39.
The standard treatment for herniated "bags" of the lower eyelid is surgical removal of excess fat. Sachs and Bosniak in 1986 and de la Plaza and Arroyo in 1988 described a new technique for treatment of palpebral bags that consisted of returning the herniated fat to the orbital cavity and retaining it by continuous sutures of the capsulopalpebral fascia either to the dehiscent portion of the orbital septum or to the periosteum of the lower orbital rim. This article reports a prospective study of 26 patients who underwent standard blepharoplasty in one lower eyelid and capsulopalpebral fascia hernia repair in the other lower eyelid. All were evaluated at 6 weeks and at 6 months after surgery, and the outcomes were compared. The results of the two different techniques in the same patient have shown comparable aesthetic outcomes in the treatment of palpebral bags. However, results indicate that the capsulopalpebral fascia hernia repair technique carries less discomfort and pain during the operation and may be less prone to postoperative bleeding and hematoma formation. In addition, in contrast to standard lower blepharoplasty with fat resection, hollowing of the lower lid or potential sunken appearance of the globe may remain absent with capsulopalpebral fascia hernia repair beyond the 6-month period of this study. 相似文献
40.
Hosein Morshedi Mosayeb Naseri Mohammad Reza Hantehzadeh Seyed Mohammad Elahi 《Journal of Electronic Materials》2018,47(4):2290-2297
In this paper, using a first principles calculation, a two-dimensional structure of silicon-antimony named penta-Sb\(_{2}\)Si is predicted. The structural, kinetic, and thermal stabilities of the predicted monolayer are confirmed by the cohesive energy calculation, phonon dispersion analysis, and first principles molecular dynamic simulation, respectively. The electronic properties investigation shows that the pentagonal Sb\(_{2}\)Si monolayer is a semiconductor with an indirect band gap of about 1.53 eV (2.1 eV) from GGA-PBE (PBE0 hybrid functional) calculations which can be effectively engineered by employing external biaxial compressive and tensile strain. Furthermore, the optical characteristics calculation indicates that the predicted monolayer has considerable optical absorption and reflectivity in the ultraviolet region. The results suggest that a Sb\(_{2}\)Si monolayer has very good potential applications in new nano-optoelectronic devices. 相似文献