全文获取类型
收费全文 | 180篇 |
免费 | 8篇 |
专业分类
电工技术 | 4篇 |
化学工业 | 54篇 |
金属工艺 | 1篇 |
机械仪表 | 3篇 |
建筑科学 | 5篇 |
能源动力 | 7篇 |
轻工业 | 7篇 |
水利工程 | 1篇 |
无线电 | 10篇 |
一般工业技术 | 20篇 |
冶金工业 | 31篇 |
自动化技术 | 45篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 7篇 |
2020年 | 4篇 |
2019年 | 7篇 |
2018年 | 3篇 |
2017年 | 1篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 3篇 |
2013年 | 2篇 |
2012年 | 11篇 |
2011年 | 7篇 |
2010年 | 7篇 |
2009年 | 10篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 9篇 |
2004年 | 12篇 |
2003年 | 6篇 |
2002年 | 6篇 |
2001年 | 8篇 |
2000年 | 2篇 |
1999年 | 7篇 |
1998年 | 11篇 |
1997年 | 11篇 |
1996年 | 8篇 |
1995年 | 4篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1991年 | 1篇 |
1988年 | 1篇 |
1985年 | 2篇 |
1981年 | 1篇 |
1978年 | 3篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1967年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有188条查询结果,搜索用时 15 毫秒
1.
Rothschild M. Forte A.R. Horn M.W. Kunz R.R. Palmateer S.C. Sedlacek J.H.C. 《IEEE journal of selected topics in quantum electronics》1995,1(3):916-923
The trend in microelectronics toward printing features 0.25 μm and below has motivated the development of lithography at the 193-nm wavelength of argon fluoride excimer lasers. This technology is in its early stages, but a picture is emerging of its strengths and limitations. The change in wavelength from 248 to 193 nm will require parallel progress in projection systems, optical materials, and photo-resist chemistries and processes. This paper reviews the current status of these various topics as they have been engineered under a multiyear program at MIT Lincoln Laboratory 相似文献
2.
An interactive courseware package designed to be used as an auxiliary instructional tool by lower division students is described. The pedagogical goal of KIRCHHOFF is to foster mastery of basic methodological skills in the study of lumped electrical circuits. For a given circuit layout, proposed by the teacher, this is verified when the circuit has been systematically labeled and when a correct, complete and nonredundant set of algebraic and integro-differential equations has been written down by the student. KIRCHHOFF, a symbolic exercising tool, provides graphic guidance in such a process and, when needed, gives the learner suitable corrective explanations 相似文献
3.
Summary The catalytic performance (activity and polymer properties) of metallocenes with different symmetries in combination with methylaluminoxane (MAO) in the polymerization of propylene has been investigated at different temperatures, under standardized reaction conditions. The zirconocene rac-ethylene (5-1-indenyl) zirconium (IV) dichloride, with C2 symmetry, produces isotatic polypropylene and isopropylidene(5-cyclopentadienyl (5-9-fluorenyl) zirconium (IV) dichloride, with C
S
symmetry, syndiotactic polypropylene. The degree of the tacticity of these polymers increases with decreasing polymerization temperature. Only atactic polypropylene was formed with the unbridged zirconocenes bis(5-cyclopentadienyl) zirconium (IV) dichloride and bis(5-indenyl zirconium (IV) dichloride at any temperature investigated (10–60°C). 相似文献
4.
Blends of polypropylene (PP) and thermoplastic elastomers (TPE), namely SBS (styrene‐butadiene‐styrene) and SEBS (styrene‐ethylene/1‐butene‐styrene) block copolymers, were prepared to evaluate the effectiveness of the TPE type as an impact modifier for PP and influence of the concentration of elastomer on the polymer properties. Polypropylene homopolymer (PP‐H) and ethylene–propylene random copolymer (PP‐R) were evaluated as the PP matrix. Results showed that TPEs had a nucleating effect that caused the PP crystallization temperature to increase, with SBS being more effective than SEBS. Microstructure characterization tests showed that in most cases PP/SEBS blends showed the smallest rubber droplets regardless of the matrix used. It was seen that SEBS is a more effective toughening agent for PP than SBS. At 0°C the Izod impact strength of the PP‐H/SEBS 30% b/w blend was twofold higher than the SBS strength, with the PP‐R/SEBS 30% b/w blend showing no break. A similar behavior on tensile properties and flexural modulus were observed in both PP/TPE blends. Yield stress and tensile strength decreased and elongation at break increased by expanding the dispersed elastomeric phase in the PP matrix. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 254–263, 2005 相似文献
5.
Dario Forte 《Network Security》1998,1998(5):15-19
During a recent conference on Information Security, a group of experts raised the issue of the potential problems with the security of Java, initiating an interesting discussion between the developers and technicians at Sun Microsystems. This article considers Java security from an Italian perspective. 相似文献
6.
Dr. Vladimir O. Talibov Dr. Edoardo Fabini Edward A. FitzGerald Dr. Daniele Tedesco Daniela Cederfeldt Martin J. Talu Moira M. Rachman Filip Mihalic Dr. Elisabetta Manoni Dr. Marina Naldi Dr. Paola Sanese Dr. Giovanna Forte Dr. Martina Lepore Signorile Prof. Xavier Barril Dr. Cristiano Simone Prof. Manuela Bartolini Dr. Doreen Dobritzsch Dr. Alberto Del Rio Prof. U. Helena Danielson 《Chembiochem : a European journal of chemical biology》2021,22(9):1597-1608
SMYD3 is a multifunctional epigenetic enzyme with lysine methyltransferase activity and various interaction partners. It is implicated in the pathophysiology of cancers but with an unclear mechanism. To discover tool compounds for clarifying its biochemistry and potential as a therapeutic target, a set of drug-like compounds was screened in a biosensor-based competition assay. Diperodon was identified as an allosteric ligand; its R and S enantiomers were isolated, and their affinities to SMYD3 were determined (KD=42 and 84 μM, respectively). Co-crystallization revealed that both enantiomers bind to a previously unidentified allosteric site in the C-terminal protein binding domain, consistent with its weak inhibitory effect. No competition between diperodon and HSP90 (a known SMYD3 interaction partner) was observed although SMYD3–HSP90 binding was confirmed (KD=13 μM). Diperodon clearly represents a novel starting point for the design of tool compounds interacting with a druggable allosteric site, suitable for the exploration of noncatalytic SMYD3 functions and therapeutics with new mechanisms of action. 相似文献
7.
8.
9.
Identification of potent human anti-IL-1RI antagonist antibodies 总被引:4,自引:0,他引:4
Fredericks ZL Forte C Capuano IV Zhou H Vanden Bos T Carter P 《Protein engineering, design & selection : PEDS》2004,17(1):95-106
Interleukin-1 (IL-1) blockade by IL-1 receptor antagonist benefits some arthritis patients by reducing joint damage. This fact inspired us to develop antagonist human therapeutic antibodies against IL-1R(I) using phage libraries that display single-chain variable fragment (scFv) antibody fragments. Panning libraries against human IL-1R(I) generated 39 unique scFv-phage whose binding to IL-1R(I) was competed by IL-1 ligands. Fifteen of these scFv-phage, identified using IL-1R(I)-binding assays and dissociation rate ranking, were reformatted as scFv-Fc and IgG(4) molecules. The ease of producing antibodies in the scFv-Fc format permitted rapid identification of four lead clones (C10, C13, C14, C15) that inhibit NF-kappaB nuclear translocation induced by IL-1. Reformatting these clones as IgG(4) molecules increased their inhibition potency by =24-fold. C10 IgG(4) is the most potent antagonist of IL-1alpha (26 nM IC(50)) and IL-1beta (18 nM IC(50)) in the NF-kappaB bioassay, although less potent than IL-1ra ( approximately 0.4 nM IC(50)). C10 is the highest affinity clone for human IL-1R(I) (K(D) approximately 60 nM). Flow cytometry indicates that several lead clones bind cell-surface cynomolgus or murine IL-1R(I), characteristics advantageous for preclinical toxicology and efficacy studies. This study demonstrates the utility of scFv-Fc fusion proteins for rapid screening of clones derived from phage libraries to identify antibody leads with therapeutic potential. 相似文献
10.
Dario Forte 《Network Security》2001,2001(8):9-10
A recent study1 has determined that the average amount of time users spend on the Internet at their workstations is on the order of five and a half hours per week. Italy is in second place after the United Kingdom in use of the Internet from the workplace. When this type of access is available there is also the potential for its abuse. And so it was found that, out of a sample of 200 interviewees, 51% admitted to browsing sites not pertinent to their business during work hours, and, this is how three of the five and half hours are spent. Where exactly? The type of websites visited when one should be working vary from leisure time activities, to shopping, to pornography.So how do companies respond to this problem? In Italy, 55% of the sample admit that they have not yet undertaken any definite actions with regard to this issue, 17% have implemented policies, 7% carry out active system monitoring and 14% use content and surfing filters. 相似文献