全文获取类型
收费全文 | 100篇 |
免费 | 4篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 15篇 |
金属工艺 | 2篇 |
机械仪表 | 3篇 |
建筑科学 | 7篇 |
能源动力 | 6篇 |
轻工业 | 6篇 |
石油天然气 | 1篇 |
无线电 | 12篇 |
一般工业技术 | 16篇 |
冶金工业 | 23篇 |
原子能技术 | 1篇 |
自动化技术 | 11篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 3篇 |
2018年 | 4篇 |
2017年 | 4篇 |
2016年 | 5篇 |
2015年 | 3篇 |
2014年 | 1篇 |
2013年 | 9篇 |
2012年 | 5篇 |
2011年 | 3篇 |
2010年 | 3篇 |
2009年 | 3篇 |
2008年 | 8篇 |
2007年 | 6篇 |
2006年 | 1篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1998年 | 8篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1989年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有104条查询结果,搜索用时 15 毫秒
21.
22.
Ctia Ornelas AbdouK. Diallo Jaime Ruiz Didier Astruc 《Advanced Synthesis \u0026amp; Catalysis》2009,351(13):2147-2154
Complexation of palladium(II) acetate [Pd(OAc)2] or dipotassium tetrachloropalladate [K2PdCl4] to “click” polymers functionalized with phenyl, ferrocenyl and sodium sulfonate groups gave polymeric palladium(II)‐triazolyl complexes that were reduced to “click” polymer‐stabilized palladium nanoparticles (PdNPs). Transmission electron microscopy (TEM) showed that reduction using sodium borohydride (NaBH4) produced PdNPs in the 1–3 nm range of diameters depending on the nature of the functional group, whereas slow reduction using methanol yielded PdNPs in the 22–25 nm range. The most active of these PdNPs (0.01% mol Pd), stabilized by poly(ferrocenyltriazolylmethyl)styrene, catalyzed the hydrogenation of styrene at 25 °C and 1 atm hydrogen, with turnover numbers (TONs) of 200,000. When stabilized by the water‐soluble poly(sodium sulfonate‐triazolylmethyl)styrene, the PdNPs (0.01% mol Pd) catalyze the Suzuki–Miyaura coupling between iodobenzene (PhI) and phenylboronic acid [PhB(OH)2] in water/ethanol (H2O/EtOH) at 25 °C with TONs of 8,200. This high catalytic activity is comparable to that obtained with “click” dendrimer‐stabilized PdNPs under ambient conditions. 相似文献
23.
Brehon Y. Kofman D. Pioro M. Diallo M. 《Selected Areas in Communications, IEEE Journal on》2007,25(5):1001-1010
Despite an observable trend in reducing the number of layers in core and metropolitan area networks, still the optimal design of multi-layer networks (like IP over WDM) remains an important issue as a means to reduce CAPEX and OPEX. In multi-layer networks, usually a connection oriented transport network (like WDM) is used to deploy a layout for optimal transport of traffic. In today's networks, the layouts are based on point to point LSPs. We will show here that by using a novel concept named bus-LSPs, we can achieve some significant savings for the operator, both in terms of CAPEX and OPEX. We also introduce a heuristic algorithm to design optimal layouts, and provide a quantitative evaluation 相似文献
24.
25.
Diallo MS Simpson A Gassman P Faulon JL Johnson JH Goddard WA Hatcher PG 《Environmental science & technology》2003,37(9):1783-1793
This paper describes an integrated experimental and computational framework for developing 3-D structural models for humic acids (HAs). This approach combines experimental characterization, computer assisted structure elucidation (CASE), and atomistic simulations to generate all 3-D structural models or a representative sample of these models consistent with the analytical data and bulk thermodynamic/structural properties of HAs. To illustrate this methodology, structural data derived from elemental analysis, diffuse reflectance FT-IR spectroscopy, 1-D/2-D 1H and 13C solution NMR spectroscopy, and electrospray ionization quadrupole time-of-flight mass spectrometry (ESI QqTOF MS) are employed as input to the CASE program SIGNATURE to generate all 3-D structural models for Chelsea soil humic acid (HA). These models are subsequently used as starting 3-D structures to carry out constant temperature-constant pressure molecular dynamics simulations to estimate their bulk densities and Hildebrand solubility parameters. Surprisingly, only a few model isomers are found to exhibit molecular compositions and bulk thermodynamic properties consistent with the experimental data. The simulated 13C NMR spectrum of an equimolar mixture of these model isomers compares favorably with the measured spectrum of Chelsea soil HA. 相似文献
26.
Marine Lambert Abderrahim Benmoussa Idrissa Diallo Katheryn Ouellet-Boutin Vronique Dorval Nathalie Majeau Charles Joly-Beauparlant Arnaud Droit Alain Bergeron Bernard Têtu Yves Fradet Frdric Pouliot Patrick Provost 《International journal of molecular sciences》2021,22(18)
Using a modified RNA-sequencing (RNA-seq) approach, we discovered a new family of unusually short RNAs mapping to ribosomal RNA 5.8S, which we named dodecaRNAs (doRNAs), according to the number of core nucleotides (12 nt) their members contain. Using a new quantitative detection method that we developed, we confirmed our RNA-seq data and determined that the minimal core doRNA sequence and its 13-nt variant C-doRNA (doRNA with a 5′ Cytosine) are the two most abundant doRNAs, which, together, may outnumber microRNAs. The C-doRNA/doRNA ratio is stable within species but differed between species. doRNA and C-doRNA are mainly cytoplasmic and interact with heterogeneous nuclear ribonucleoproteins (hnRNP) A0, A1 and A2B1, but not Argonaute 2. Reporter gene activity assays suggest that C-doRNA may function as a regulator of Annexin II receptor (AXIIR) expression. doRNAs are differentially expressed in prostate cancer cells/tissues and may control cell migration. These findings suggest that unusually short RNAs may be more abundant and important than previously thought. 相似文献
27.
28.
Ferroelectric Materials: Nanoscale Atomic Displacements Ordering for Enhanced Piezoelectric Properties in Lead‐Free ABO3 Ferroelectrics (Adv. Mater. 29/2015) 下载免费PDF全文
29.
P Truc V Jamonneau P N''Guessan PB Diallo A Garcia 《Canadian Metallurgical Quarterly》1998,92(3):288-289
Neurologic manifestations of Legionnaires' disease occur quite often, although neuropathies are not as common as abnormal mentation. A case story of a 41 year-old woman with severe Legionnaires' disease is presented. After two months on the intensive care unit she appeared to suffer from polyneuropathy in both legs EMG revealed severe polyneuropathy. The symptoms were still present after nine months. The pathogenesis is discussed. 相似文献
30.