全文获取类型
收费全文 | 228篇 |
免费 | 2篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 21篇 |
金属工艺 | 12篇 |
机械仪表 | 19篇 |
建筑科学 | 1篇 |
矿业工程 | 1篇 |
能源动力 | 2篇 |
轻工业 | 1篇 |
水利工程 | 6篇 |
石油天然气 | 8篇 |
无线电 | 17篇 |
一般工业技术 | 67篇 |
冶金工业 | 43篇 |
原子能技术 | 12篇 |
自动化技术 | 19篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 7篇 |
2017年 | 9篇 |
2016年 | 7篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 10篇 |
2012年 | 5篇 |
2011年 | 6篇 |
2010年 | 6篇 |
2009年 | 4篇 |
2008年 | 4篇 |
2007年 | 7篇 |
2006年 | 12篇 |
2005年 | 3篇 |
2002年 | 4篇 |
2000年 | 3篇 |
1998年 | 7篇 |
1997年 | 3篇 |
1996年 | 8篇 |
1995年 | 9篇 |
1994年 | 4篇 |
1993年 | 7篇 |
1992年 | 6篇 |
1991年 | 4篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1981年 | 3篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1977年 | 2篇 |
1976年 | 3篇 |
1975年 | 4篇 |
1973年 | 2篇 |
1972年 | 4篇 |
1970年 | 2篇 |
1969年 | 3篇 |
1968年 | 4篇 |
1966年 | 2篇 |
1963年 | 2篇 |
1962年 | 3篇 |
1961年 | 2篇 |
排序方式: 共有230条查询结果,搜索用时 15 毫秒
91.
Measurement Techniques - 相似文献
92.
93.
AJ Verkuylen MJ Frenkel KW Savin TA Dopheide CW Ward 《Canadian Metallurgical Quarterly》1993,58(2):325-332
A glycoprotein, with apparent molecular weight in SDS-polyacrylamide gels of 37 kDa, has been isolated from the excretory-secretory (ES) products of the adult stage of Trichostrongylus colubriformis, a parasitic nematode. This protein is the major ES product recognized in immunoblots by lymph from a naturally infected sheep. A synthetic oligonucleotide, based on peptide sequence data from a digest of the purified protein was used to successfully screen a cDNA library. A cDNA clone was isolated which encoded a presumptive protein precursor of 220 amino acids that contained a 63 amino acid region of which more than 35% of the residues were proline, three peptide sequences determined from the natural component, and three potential N-glycosylation sites, consistent with the protein being isolated from the lectin-bound fraction of the adult ES products. The presumptive, processed, amino terminus encoded by the cDNA clone was preceded by a signal-like, hydrophobic-rich region of 16 amino acids. 相似文献
94.
95.
96.
97.
The authors give the results of an analytical and experimental investigation of heat transfer between an axisymmetric jet and a plate normal to the flow for laminar boundary layer conditions. 相似文献
98.
Dana Stan Carmen-Marinela Mihailescu Mihaela Savin Iulia Matei 《International journal of molecular sciences》2013,14(2):3011-3025
The first step in determining whether a fluorescent dye can be used for antibody labeling consists in collecting data on its physical interaction with the latter. In the present study, the interaction between the 2-(2-hydroxy-5-nitrobenzylidene)-1,3-indanedione (HNBID) dye and the IgG1 monoclonal mouse antibody anti-human heart fatty acid binding protein (anti-hFABP) has been investigated by fluorescence and circular dichroism spectroscopies and complementary structural results were obtained by molecular modeling. We have determined the parameters characterizing this interaction, namely the quenching and binding constants, classes of binding sites, and excited state lifetimes, and we have predicted the localization of HNBID within the Fc region of anti-hFABP. The key glycosidic and amino acid residues in anti-hFABP interacting with HNBID have also been identified. A similar systematic study was undertaken for the well-known fluorescein isothiocyanate fluorophore, for comparison purposes. Our results recommend HNBID as a valuable alternative to fluorescein isothiocyanate for use as a fluorescent probe for IgG1 antibodies. 相似文献
99.
Validation of single nucleotide polymorphisms associated with milk production traits in dairy cattle
Chamberlain AJ Hayes BJ Savin K Bolormaa S McPartlan HC Bowman PJ Van der Jagt C MacEachern S Goddard ME 《Journal of dairy science》2012,95(2):864-875
Single nucleotide polymorphism (SNP) associations with milk production traits found to be significant in different screening experiments, including SNP in genes hypothesized to be in gene pathways affecting milk production, were tested in a validation population to confirm their association. In total, 423 SNP were genotyped across 411 Holstein bulls, and their association with 6 milk production traits--Australian Selection Index (indicating the profitability of an animal's milk production), protein, fat, and milk yields, and protein and fat composition--were tested using single SNP regressions. Seventy-two SNP were significantly associated with one or more of the traits; their effects were in the same direction as in the screening experiment and therefore their association was considered validated. An over-representation of SNP (43 of the 423) on chromosome 20 was observed, including a SNP in the growth hormone receptor gene previously published as having an association with protein composition and protein and milk yields. The association with protein composition was confirmed in this experiment, but not the association with protein and milk yields. A multiple SNP regression analysis for all SNP on chromosome 20 was performed for all 6 traits, which revealed that this mutation was not significantly associated with any of the milk production traits and that at least 2 other quantitative trait loci were present on chromosome 20. 相似文献
100.
Khomchenko V. S. Kushnirenko V. I. Papusha V. P. Savin A. K. Lytvyn O. S. 《Semiconductors》2010,44(5):685-690
ZnO-Ag thin films were prepared by a two-stage method on glass and sapphire substrates. Ag doping was carried out by a method
of close space sublimation at atmospheric pressure. The film thickness is varied from 0.6 to 7 μm. The structural and radiative
properties were explored by X-ray diffraction technique, atomic force microscopy, photoluminescence and cathodoluminescence
spectroscopy. The influence of the fabricating conditions on the properties of ZnO-Ag films is studied. It is found that the
Ag doping modifies the crystalline structure of the films and promotes the oriented growth of monocrystalline blocks with
the size of 500–2000 nm in the [0002] direction. Improvement of the crystalline quality correlates with the change of the
radiative characteristics of the films. The origin of emission centers is discussed. 相似文献