全文获取类型
收费全文 | 70篇 |
免费 | 3篇 |
国内免费 | 1篇 |
专业分类
化学工业 | 7篇 |
机械仪表 | 2篇 |
建筑科学 | 1篇 |
能源动力 | 11篇 |
轻工业 | 4篇 |
石油天然气 | 1篇 |
无线电 | 8篇 |
一般工业技术 | 26篇 |
冶金工业 | 8篇 |
自动化技术 | 6篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 1篇 |
2018年 | 5篇 |
2017年 | 3篇 |
2015年 | 3篇 |
2014年 | 6篇 |
2012年 | 2篇 |
2011年 | 4篇 |
2010年 | 1篇 |
2009年 | 4篇 |
2008年 | 2篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1971年 | 1篇 |
1969年 | 3篇 |
排序方式: 共有74条查询结果,搜索用时 15 毫秒
1.
Arjunan Arulchakkaravarthi Rakesh Kumar Parthasarathy Santhanaraghavan Sivaramakrishnan Muralithar Rengasamy Gopalakrishanan Perumalsamy Ramasamy 《Materials Research Innovations》2002,6(5-6):273-276
Organic molecular scintillating crystals are noted for their good timing and particle discrimination process. Trans-stilbene
is one such candidate noted for its good particle detection characteristics for the past five decades. Progressive strengthening
of detection characteristics of trans-stilbene has been attempted by improving crystal perfection. A series of timing resolution
studies have been carried out for the Bridgman grown trans-stilbene crystals under different experimental conditions. The
results were compared with the previously reported values. Pulse shape discrimination process has been carried out for 241Am and 252Cf sources and good discrimination has been obtained for gamma-alpha and gamma-neutron sources from the grown organic phosphor
crystal.
Electronic Publication 相似文献
2.
Skin tumour is defined as the enormous growth of cells in the skin. The aim is to design standalone application for diagnosis of skin tumours. The dermal images of three different types obtained from the authorized PH2 database are used to analyse the defined image processing algorithm. In this algorithm, pre-processing was performed to remove hair cells. Contour-based level set is used to segment lesion from which clinical and morphological features are extracted for classification. Significant features are obtained with the feature selection technique, Random subset. Classification is performed with three classifiers. The efficiency of the classifier obtained with different trials of classification is analysed with the ANOVA test. With these results, the Multiclass Support vector machine was configured as a suitable classifier to categorize dermal images. Therefore, an application is developed for the analysis of images acquired through mobile with the help of a magnification set-up. Thus, extracted features, segmented and original images are transferred to a database for storage. 相似文献
3.
The Journal of Supercomputing - This paper proposes a novel method for estimating the reaction force, the Stereovision Based Force Estimation Method (SBFEM), with deep learning techniques to... 相似文献
4.
L. Madan Ananda Kumar V. Sivaramakrishnan M. Premalatha M. Vivekanandan 《国际可持续能源杂志》2017,36(6):592-605
The zero energy building considered is a single storey building in Tiruchirappalli city retrofitted with various green features. This study investigated the effect of a suction opening orientation on a vertical solar chimney (VSC), integrated into a one-storey building. It was designed, manufactured and tested through selection of different suction openings for the entry of air, including right, left, front, back, both right and left and both front and back sides. Genetic algorithm (GA) calculates maximum air flow rate for a building with VSC for better suction opening, in Tiruchirappalli's dry, environmental conditions. GA is a useful technique for finding an improved suction opening specifically in the presence of a host of independent parameters which are large. The obtained results are related to fluid flow temperature distribution along the chimney, mass flow rate and air change per hour. The findings between the GA and the experimental results show sound agreement. 相似文献
5.
Heavy metals are an important group of chemical contaminants and food is the major vehicle for entry into the system. Fish constitute a major source of heavy metals in food. Concentration of heavy metals in commercially important species of fish, shellfish and fish products from fish markets in and around the Cochin area was evaluated using an atomic absorption spectrometer. The concentration ranges of Cd, Pb, Hg, Cr, As, Zn, Cu, Co, Mn, Ni, and Se in the samples were <0.07–1, <0.07–1.32, <0.05–2.31, <0.05 to 3.65, <0.1–4.14, 0.6 to 165, 0.15 to 24, <0.02 to 0.85, <0.08 to 9.2, <0.032–1.38 and; <0.03–1.35 mg/kg, respectively. The present study showed that different metals were present in the samples at different levels but within the maximum residual levels prescribed by the EU and USFDA and the fish and shellfish from these areas, in general, are safe for human consumption. 相似文献
6.
S. K. Chaudhury A. K. Singh C. S. S. Sivaramakrishnan S. C. Panigrahi 《Bulletin of Materials Science》2004,27(6):517-521
Al-2Mg-11TiO2 composite was successfully prepared by the conventional vortex method. The macrostructural observation revealed columnar
structure with rutile particles being distributed throughout the matrix in the form of agglomerates. Microstructural observation
showed the presence of micro voids in the particle-enriched zone. Electrical resistivity measurement showed a phase transformation
at 360°C, which was consistent during DSC studies due to the precipitation of TiAl3 phase. As-cast composite was both hot rolled and cold rolled successfully to 50 and 40% reduction, respectively. The mechanical
properties of the thermomechanically-worked composite were studied. From fractographic analysis, it was clear that the crack
had nucleated at the particle/matrix interface and propagated through the matrix by microvoid coalescence. Ultimate tensile
strength of cold worked composite was found to be better than the hot worked material. 相似文献
7.
Selvan K.T. Sivaramakrishnan R. Kini K.R. Poddar D.R. 《Antennas and Propagation, IEEE Transactions on》2002,50(6):875-877
An approximate formula has been recently proposed for the on-axis gain of rectangular waveguide antennas, that include open-ended rectangular waveguides and sectoral and pyramidal horns (see Selvan, K.T., IEEE Trans. Antennas Propagat., vol.47, p.1001-4, 1999). This formula is an approximate generalization of S.A. Schelkunoff's horn-gain formulas (see "Electromagnetic Waves", Van Nostrand, p.360-4, 1943). Gain measurements are reported for the gains of E plane and H plane sectoral horns and are used in an examination of the accuracy of Selvan's formulas. To the best of the authors' knowledge, these are the first ever measurement efforts on the gain of H-plane sectoral horns 相似文献
8.
9.
The electrical conductivity and stability in resistance of CdSe0.2Te0.8 thin films in different ambients and deposited at different substrate temperatures were investigated. A reduction in conduction activation energy with increase in film thickness and deposition temperature is accounted for by the fact that in CdSe
x
Te1–x
inhomogeneous semiconductor thin films, the potential relief inhomogeneity may be reduced with increase in film thickness and substrate temperature, which results in the decrease of conduction activation energy of the films. 相似文献
10.
In the present study, compression and deformation behavior of vulcanized cylindrical rubber blocks has been examined using imaging techniques. Quantitative measurements of bulge radius and the associated lateral profile of the uniaxially loaded rubber blocks have been carried out experimentally using a newly developed imaging tool. The maximum bulge radius obtained using this method has shown good agreement with the established models. A significant increase in contact area has been observed in the images under large compressive strains. Also, at an intermediate strain level, a unique low intensity band occurred in the image between the outer ring and the center of compressed blocks. The nonlinear characteristics are obvious from the experiments conducted on the bonded cylinders using the developed imaging tool. It is evident from images that the deformed lateral profiles at larger compressive strain does not have parabolic shape and appeared to be more flat. Moreover the reliability of the testing tool has been evaluated and a data measurement technique has been proposed to characterize the behavior of rubber blocks under large compressive strains. 相似文献