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51.
Q. SiK. Hanai T. IchikawaM.B. Phillipps A. HiranoN. Imanishi O. YamamotoY. Takeda 《Journal of power sources》2011,196(22):9774-9779
The cyclic performance of a composite SiO and carbon nanofiber (CNF) anode was examined for lithium-ion batteries. SiO powder of several micrometers was pulverized using high energy mechanical milling. The SiO was ball-milled for 12 h with CNF to produce a composite electrode material that exhibited excellent cycling performance. A reversible capacity of approximately 700 mAh g−1 was observed after 200 cycles. The excellent cyclic performance was discussed with respect to the change of the valence state of Si by ball-milling. A large irreversible capacity at the first cycle for the SiO/CNF composite electrode was reduced to 2% by chemically pre-charging with a lithium film attached to the rim of the electrode. 相似文献
52.
The steeping conditions for kernels affected the physicochemical properties of corn starch. Steeping in an alkaline solution minimized the nitrogen and phosphorus contents, while that in water and a sulfite solution gave high contents. The alkaline-steeping appeared to slightly reduce the crystallinity of starch granules, as judged on X-ray diffraction. Steeping at a low temperature produced the starch showing the lowest pasting temperature, on amylography, but it showed a similar gelatinization temperature, on photopastegraphy. to those of the other starches. The starches with low nitrogen and lipid contents swelled largely and were extensively solubilized on heating. The actual amylose contents were 20–21%, which were considerably lower than the apparent contents. 相似文献
53.
Tomoya Hasegawa Mikako Ito Satoru Hasegawa Masaki Teranishi Koki Takeda Shuto Negishi Hiroshi Nishiwaki Jun-ichi Takeda Tyler W. LeBaron Kinji Ohno 《International journal of molecular sciences》2022,23(5)
Molecular hydrogen ameliorates pathological states in a variety of human diseases, animal models, and cell models, but the effects of hydrogen on cancer have been rarely reported. In addition, the molecular mechanisms underlying the effects of hydrogen remain mostly unelucidated. We found that hydrogen enhances proliferation of four out of seven human cancer cell lines (the responders). The proliferation-promoting effects were not correlated with basal levels of cellular reactive oxygen species. Expression profiling of the seven cells showed that the responders have higher gene expression of mitochondrial electron transport chain (ETC) molecules than the non-responders. In addition, the responders have higher mitochondrial mass, higher mitochondrial superoxide, higher mitochondrial membrane potential, and higher mitochondrial spare respiratory capacity than the non-responders. In the responders, hydrogen provoked mitochondrial unfolded protein response (mtUPR). Suppression of cell proliferation by rotenone, an inhibitor of mitochondrial ETC complex I, was rescued by hydrogen in the responders. Hydrogen triggers mtUPR and induces cell proliferation in cancer cells that have high basal and spare mitochondrial ETC activities. 相似文献
54.
A 155Eu/154SmPd3 (about 231 MBq) source for use with 155Gd Mössbauer spectroscopy was developed by a novel method. In the novel method, the isotopically enriched 154SmPd3 compound was prepared by the conventional solid state reaction of 154Sm(HCOO)3 and PdHx in a hydrogen atmosphere at 1273 K for 18 h, which is simpler than the previously reported method. In order to increase the reaction areas, palladium fine particles used to synthesize the PdHx hydride were prepared by a chemical solution process. Performance of the newly developed source was evaluated by observing the 155Gd Mössbauer spectra of known compounds, GdPd3 and cubic Gd2O3 at 12 K. The obtained results indicated that the developed source is fine enough to investigate the structural characteristic of various materials containing gadolinium. 相似文献
55.
56.
The dependence of the oxygen potentials on oxygen non-stoichiometry and temperature of Am0.5Pu0.5O2−x has been obtained by the electromotive force (EMF) method with the cell: (Pt) air |Zr(Ca)O2−x| Am0.5Pu0.5O2−x (Pt). The x value of Am0.5Pu0.5O2−x was changed at 1333 K over 0.02 < x ? 0.25 by the coulomb titration method. The temperature dependence of the oxygen potential was also measured over the range of 1173-1333 K. It was found that the oxygen potential decreased from −80 to −360 kJ mol−1 with increasing x from 0.021 to 0.22 at 1333 K and that it remained almost constant at −360 kJmol−1 around x = 0.23. It was concluded that Am0.5Pu0.5O2−x should be composed of the single fluorite-type phase over 0.02 < x ? 0.22 and the mixed phases of fluorite-type and (Am, Pu)9O16 at around x = 0.23. 相似文献
57.
E Ngang H Matsufuji M Chino Y Goda M Toyoda M Takeda 《Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan》2001,42(5):298-303
HPLC analysis revealed that eight subsidiary colors existed in commercial Food Green No. 3 (fast green FCF, FD & C Green No. 3). Among them, four subsidiary colors C, F, G, and H were isolated by using preparative HPLC and their structures were determined by MS and NMR. They were the disodium salt of 2-[[4-[N-ethyl-N-(3- sulfophenylmethyl)amino]phenyl][4-[N-ethyl-N-(4- sulfophenylmethyl)amino]phenyl]methylio]-4-hydroxybenzenesulfonic acid (abbreviated as m,p-G-3), the sodium salt of 2-[[(4-N-ethylamino)phenyl][4-[N-ethyl-N-(3- sulfophenylmethyl)amino]-phenyl]methylio]-4-hydroxybenzenesulfonic acid [abbreviated as HSBA-(EA) (m-EBASA)], the sodium salt of 2-[[(4-N-diethylamino)phenyl][4-[N-ethyl-N-(3- sulfophenylmethyl)amino]phenyl]-methylio]-4-hydroxybenzenesulfonic acid [abbreviated as HSBA-(di-EA) (m-EBASA)], and the sodium salt of 2-[[4-[N-ethyl-N-(phenylmethyl)amino]phenyl][4-[N-ethyl-N-(3- sulfophenylmethyl)-amino]phenyl]methylio]-4-hydroxybenzenesulfonic acid [abbreviated as HSBA-(EBA)(m-EBASA)], respectively. HSBA-(di-EA) (m-EBASA) was a subsidiary color newly found in commercial Food Green No. 3. 相似文献
58.
The gate-drain overlapped device (GOLD) structure is proposed to achieve high reliability and high performance in deep submicrometer MOSFETs. The GOLD device concept is different from that of drain-engineering methods such as the double-diffused drain (DDD) and lightly doped drain (LDD). GOLD eliminates the tradeoff between transconductance and breakdown voltage (hot-carrier, drain sustaining). The overlap effect of the GOLD devices is discussed using simulation and experiment. GOLD has a gate structure using a native oxide film (5-10 A) to obtain an overlapped fine structure. The process is also compatible with conventional LDD processes and is suitable for 0.3-0.5-μm-design-rule devices at 5-V operation, and 3-V operation 相似文献
59.
MP Lewis M Clements S Takeda PL Kirby H Seki LB Lonsdale MH Sullivan MG Elder JO White 《Canadian Metallurgical Quarterly》1996,17(2-3):137-146
High doses of morphine produce a state of behavioural inactivity and muscular rigidity. This type of 'catalepsy' is clearly different from the state which is produced by the administration of neuroleptics, e.g. haloperidol. While haloperidol-induced catalepsy can easily be antagonised by NMDA receptor antagonists, there has been a report that the non-competitive NMDA receptor antagonist (+)-5-methyl-10,11-dihydro-5H-dibenzo[a,d] cyclohepten-5,10-imine (MK-801) potentiates morphine-induced catalepsy. The aim of this study was to further examine the role of glutamate receptors in the mediation of morphine-induced catalepsy. To this end we coadministered morphine (20, 40, 60 mg/kg i.p.) with MK-801 (0.1 and 0.3 mg/kg i.p.), the competitive NMDA receptor antagonist DL-(E)-2-amino-4-methyl-5-phosphono-3-pentoic acid (CGP 37849) (2 and 6 mg/kg i.p.), or 1-(4-aminophenyl)-4-methyl-7,8-methylen-dioxy-5H-2,3- benzodiazepine (GYKI 52466) (2 and 4 mg/kg), an antagonist of the AMPA type of glutamate receptors, respectively. The degree of catalepsy was assessed using two different methods, the 'bar/podium/grid' test which is commonly used to measure neuroleptic-induced catalepsy, and a test for the presence or absence of righting reflexes after turning the animals into a supine position. It was found that in the 'bar/podium/grid' test coadministration of both NMDA receptor antagonists significantly and dose-dependently augmented morphine-induced catalepsy. The results using the AMPA receptor antagonist were less clear since the lower dose of GYKI 52466 tended to attenuate the morphine effect whereas the higher dose augmented morphine-induced catalepsy in some cases. While placing the animals on the bar and on the podium produced essentially the same results, the grid was found to be inapplicable for the measurement of morphine-induced catalepsy since the animals did not cling to the grid and fell off almost immediately after being released from the experimenter's hand. With respect to the righting reflexes it was found that the number of animals not showing these responses increased when MK-801 or CGP 37849 was coadministered with morphine. In contrast, most of the animals treated with GYKI 52466 and morphine displayed intact righting reflexes. It is concluded that glutamatergic transmission plays an important role in the mediation of morphine-induced catalepsy, though different to that of haloperidol-induced catalepsy, and that NMDA and AMPA receptors are differentially involved in different aspects of the associated behavioural state. 相似文献
60.
Kami D Takeda S Itakura Y Gojo S Watanabe M Toyoda M 《International journal of molecular sciences》2011,12(6):3705-3722
Nanoparticle technology is being incorporated into many areas of molecular science and biomedicine. Because nanoparticles are small enough to enter almost all areas of the body, including the circulatory system and cells, they have been and continue to be exploited for basic biomedical research as well as clinical diagnostic and therapeutic applications. For example, nanoparticles hold great promise for enabling gene therapy to reach its full potential by facilitating targeted delivery of DNA into tissues and cells. Substantial progress has been made in binding DNA to nanoparticles and controlling the behavior of these complexes. In this article, we review research on binding DNAs to nanoparticles as well as our latest study on non-viral gene delivery using polyethylenimine-coated magnetic nanoparticles. 相似文献