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52.
Yadav Vikramaditya G. Yadav Ganapati D. Patankar Saurabh C. 《Clean Technologies and Environmental Policy》2020,22(9):1757-1774
Clean Technologies and Environmental Policy - Energy and the environment are intimately related and hotly debated issues. Today’s crude oil-based economy for the manufacture of... 相似文献
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S.L. Kadam K.K. Patankar V.L. Mathe M.B. Kothale R.B. Kale B.K. Chougule 《Journal of Electroceramics》2002,9(3):193-198
Magnetoelectric composites with ferrite + ferroelectric compositions xBa0.8Pb0.2TiO3 + (1 – x) Ni0.75Co0.25Fe2O4 in which x varies as 0, 0.55, 0.70, 0.85 and 1.0 were prepared by ceramic method. X-ray analysis confirms single-phase formation in x = 0 and x = 1 compositions, whereas the presence of both phases is shown in x = 0.55, 0.70 and 0.85 compositions. Variation of dielectric constant () with temperature and frequency has been studied. All the samples have show linear magnetoelectric conversion in the presence of static magnetic field. Static magnetoelectric conversion factor, (dE/dH), was measured as a function of magnetic field in the samples with x = 0.55, 0.70 and 0.85 compositions. The maximum value of dE/dH was found to be 140 V/cm/Oe for x = 0.85 composition. 相似文献
55.
K.B. Thakur G.K. Sahu S.J. Gaur R.C. Das A.K. Tak R.A. Patankar G.K. Bhowmick K.G. Manohar B.N. Jagatap N. Venkatramani 《Vacuum》2005,77(4):443-449
Strip electron guns, capable of generating two-dimensional (length?width) evaporating sources, are used for the application of electron beam assisted physical vapour deposition to metallurgical coating of large substrates. The collisional relaxation processes in the atomic vapour generated using such a 2D-source differ significantly from those in a point source created using axisymmetric electron gun. In order to study the influence of collision processes, an atomic beam of zirconium was generated using a 130- mm-strip electron gun and its ground electronic state population was measured in a given optical path length using a tunable diode laser based on-line absorption spectroscopic technique. These measurements were carried out as a function of vertical height from the source (114 mm×6 mm) and for different source temperatures obtained by varying electron beam powers in the range of 40-91 kW.While the experimental values of integrated atom number density were observed to match very closely with those given by reported vapour flow model at low evaporating source temperatures, they showed significant deviation at high temperatures. The results are interpreted in terms of the collisional processes in the vapour stream and indicative of the fact that the vapour expansion from 2D source never runs out of collisions. 相似文献
56.
The theoretical specific energy of the lead/acid battery is 176 W h kg−1. The specific energy actually achieved depends on the discharge rate but is typically only about 15–25% of this maximum value. The major reason for the lead acid battery's inability to obtain higher specific energies is that much of the active material in both the positive and negative electrode is not discharged. This is especially true at the higher discharge rates where the diffusion of sulfate ions into the positive plate limits the reaction. Porous, hollow, glass microspheres (PHGM) would allow for more electrolyte storage in the electrodes and enhance the high rate energy storage of lead acid batteries. In this paper, we present a method for making hollow, glass microspheres (HGMs) porous. Presently our process only produces small yields. We believe in the future that the yields with our process can be substantially increased. PHGMs could substantially improve the high rate performance of lead acid batteries and make these batteries more attractive for hybrid electric vehicle applications. 相似文献
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Sushree Prangya P. Pany Mahak Sapra Jitendar Sharma Dr. V. Dhamodharan Prof. Swati Patankar Dr. P. I. Pradeepkumar 《Chembiochem : a European journal of chemical biology》2019,20(23):2955-2960
RNA G-quadruplex (G4)-forming motifs present at the 5′-UTR of the protein phosphatase (PP2Ac) gene are the regulatory targets of the fragile X mental retardation protein (FMRP), which is weakly expressed in Fragile X patients. Herein, we report that the existence of such G4-forming sequence represses the translation of the PP2Acα gene. This study opens therapeutic avenues to design small molecule ligands that mimic the function of the FMRP. 相似文献
58.
K. A. Patankar D. A. Dillard S. W. Case M. W. Ellis Y.‐H. Lai C. S. Gittleman 《Fuel Cells》2012,12(5):787-799
The tensile relaxation modulus of a commercially available proton exchange membrane, Nafion® NRE 211, was obtained over a range of humidity levels and temperatures using a commercial dynamic mechanical analyzer (DMA). Hygral stress relaxation master curves were first constructed, followed by a hygrothermal master curve using the time temperature moisture superposition principle. The hygrothermal master curve was fitted using a 10‐term Prony series and validated using longer term stress relaxation tests. To validate the results from the stress relaxation experiments, short and long‐term creep compliance was converted into stress relaxation modulus using a well‐known viscoelastic conversion formula, and compared with the relaxation modulus obtained under identical conditions. Good agreement was found between the two datasets. It was evident that relaxation data at 2% RH at the test temperatures was not superposable with the master curves obtained at higher relative humidity (10% < RH < 90%) at the temperature range 70 °C < T < 90 °C. It was observed that the longer term relaxation modulus under humid conditions matched well with the hygrothermal master curve; however, the longer term relaxation modulus under dry conditions was significantly higher than the relaxation master curve obtained under dry conditions, raising the possibility of a physical aging process in the ionomer and/or irreversible morphological changes in the membrane under dry conditions. 相似文献
59.
ABSTRACT This paper illustrates the use of numerical simulation models for evaluating the performance of a moving bed dryer. A finite-volume method is employed in developing a steady state, two-dimensional numerical model for a double-deck conveyor dryer. Using this numerical model, variations in the product moisture content and temperature along the length and across the height of the product beds are predicted. Similarly, the resulting variations in the temperature and relative humidity of the drying air are predicted in the entire two-dimensional domain of a dryer. Effect of air-to-product mass flow ratio and product residence lime on the average moisture content of the outgoing product are also evaluated for three different drying air temperatures. 相似文献
60.
Safety-critical aerospace functions are generally required to have failure rates less than 10/sup -9/ per hour (FAA, 1988) and an architecture that supports several such functions is required to have failure rates less than 10/sup -10/ per hour. Although the requirement for an individual automobile may be more relaxed, similar requirements apply for automobiles in general (Rushby, 2001), because of their large number as compared to aircraft. Consumer-grade electronics have failure rates that are orders of magnitude worse than this. Hence, redundancy to improve failure rates and fault tolerance to prevent faults from propagating both are essential elements of a safety critical networked control system (NCS). TTP/C is a member of the time-triggered protocol (TTP) family that satisfies Society of Automotive Engineers Class C requirements for hard real-time fault-tolerant communication. A model is presented for a fault-tolerant NCS using TTP/C communication. Appropriate features of TTP/C are incorporated in the model. A simulation is presented for the electric power steering node with switching controller, which makes the node tolerant to the parameter faults column. 相似文献