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121.
Hideki Mori Yurie Tone Kouske Shimizu Kazunori Zikihara Satoru Tokutomi Tomoaki Ida Hideshi Ihara Masayuki Hara 《Materials science & engineering. C, Materials for biological applications》2013,33(1):174-181
We purified and characterized Type I collagen from the scales of the Pacific saury (Cololabis saira) and compared it with collagen from other organisms. Subunit composition of C. saira collagen (2α1 + α2) was similar to that of red sea bream (Pagrus major) and porcine collagen. C. saira collagen did not form a firm gel after neutralization of pH in solution. The temperature of denaturation (24–25 °C) of C. saira collagen was slightly lower than that of P. major collagen (26–27 °C). The contents of proline and hydroxyproline were lower in red sea bream and Pacific saury collagen than in porcine collagen. Circular dichroism spectra and Fourier-transformed infrared spectra showed that heat denaturation caused unfolding of the triple helices in all three collagens. 相似文献
122.
Enhanced trace phosphate removal from water by zirconium(IV) loaded fibrous adsorbent 总被引:1,自引:0,他引:1
This study was investigated for the trace phosphate removal at high feed flow rate by ligand exchange fibrous adsorbent. The zirconium(IV) loaded bifunctional fibers containing both phosphonate and sulfonate were used as a highly selective ligand exchange adsorbent for trace phosphate removal from water. The precursory fiber of the bifunctional fibers was co-grafted by polymerization of chloromethylstyrene and styrene onto polyethylene coated polypropylene fiber and then bifunctional fibers were prepared by Arbusov reaction followed by phosphorylation and sulfonation. Phosphate adsorption experimental work was carried out in column approach. Phosphate adsorption increased with decreasing the pH of feed solutions. An increase in the feeds flow rate brings a decrease in both breakthrough capacity and total adsorption. The effect of competing anions on phosphate adsorption systems was investigated. The experimental findings reveal that the phosphate adsorption was not affected in the presence of competing anions such as chloride and sulfate despite the enhancement of the breakthrough points and total adsorption. Due to high selectivity to phosphate species, low concentration level of phosphate (0.22 mg/L) was removed at high feed flow rate of 450 h−1 in space velocity. The adsorbed phosphate on the Zr(IV) loaded fibrous column was quantitatively eluted with 0.1 M NaOH solution and then the column was regenerated by 0.5 M H2SO4 for the next adsorption operation. During many adsorption-elution-regeneration cycles, no measurable Zr(IV) was found in the column effluents. Therefore, the Zr(IV) loaded bifunctional fibrous adsorbent is to be an effective means to treat wastewater to prevent eutrophication in the receiving water bodies for long time without any deterioration. 相似文献
123.
Rie Ihara Yasuhiko Benino Takumi Fujiwara 《Science and Technology of Advanced Materials》2013,14(2):138-142
Some ternary Gd2O3–Bi2O3–B2O3 glasses are prepared, and crystallization behavior and second harmonic intensity are examined to develop new non-linear optical crystallized glasses. The glasses with Gd2O3 contents of 8–14 mol% have large densities of over 6 g/cm3 and large refractive indices of ~ 1.9. Transparent surface crystallized glasses consisting of two kinds of crystalline phases with different morphologies, i.e. plate shape and needle shape crystals, are fabricated by heat-treatment at temperatures between glass transition and crystallization temperatures. From second harmonic generation microscope observations, micro-Raman scattering spectra and XRD analyses, plate shape crystals are determined to be non-linear optical GdxBi1KxBO3 and needle shape crystals are Bi3B5O12 having no second-order optical non-linearity. Since crystallized glasses consisting of GdxBi1KxBO3 crystals exhibit relatively strong SHGs, they have a high potential for application to light control devices. 相似文献
124.
Searchable Encryption Revisited: Consistency Properties, Relation to Anonymous IBE, and Extensions 总被引:2,自引:0,他引:2
Michel Abdalla Mihir Bellare Dario Catalano Eike Kiltz Tadayoshi Kohno Tanja Lange John Malone-Lee Gregory Neven Pascal Paillier Haixia Shi 《Journal of Cryptology》2008,21(3):350-391
We identify and fill some gaps with regard to consistency (the extent to which false positives are produced) for public-key
encryption with keyword search (PEKS). We define computational and statistical relaxations of the existing notion of perfect
consistency, show that the scheme of Boneh et al. (Advances in Cryptology—EUROCRYPT 2004, ed. by C. Cachin, J. Camenisch,
pp. 506–522, 2004) is computationally consistent, and provide a new scheme that is statistically consistent. We also provide a transform of
an anonymous identity-based encryption (IBE) scheme to a secure PEKS scheme that, unlike the previous one, guarantees consistency.
Finally, we suggest three extensions of the basic notions considered here, namely anonymous hierarchical identity-based encryption,
public-key encryption with temporary keyword search, and identity-based encryption with keyword search.
An extended abstract of this paper appears in Advances in Cryptology—CRYPTO 2005, ed. by V. Shoup, Santa Barbara, California, August 14–18, 2005, Lecture Notes in Computer Science, vol. 3621 (Springer,
Berlin, 2005), pp. 205–222. This is the full version. 相似文献
125.
Poly(ionic liquid)-grafted silica materials were firstly synthesized by polymerization of 1-vinyl-3-butylimidazolium bromide as a new ionic liquid monomer on mercaptopropylated silica by surface radical chain-transfer polymerization. The bromide counterion was exchanged with three other inorganic anions including tetrafluoroborate, hexafluorophosphate, and trifuoromethanesulfonate through simple aqueous anion-exchange reaction. The obtained poly(ionic liquid)-grafted silica materials were characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and X-ray fluorescence. The wettabilities of the materials with different counterions were verified by static water contact angle measurement. This kind of new materials may have some potential in applied fields such as used as a catalyst, an extractant, a chromatographic stationary phase, etc. 相似文献
126.
Satoshi Ihara Masaki Kamatani Masashi Ishimine Saburo Sato Chobei Yamabe Hidenori Akiyama 《Electrical Engineering in Japan》2000,132(1):15-21
We have carried out experiments on TEA‐CO2 laser oscillation using the inductive energy storage pulsed‐power generator, which has a copper wire fuse as an opening switch. Maximum laser output energy of about 1 J/pulse was obtained in the case of a fuse length of 5 cm and energy storage inductance of 8 μH. The laser output energy depends on the energy storage inductance and the parameters of the fuse. In this paper, the dependencies of laser output energy on inductance and fuse length, and a comparison between the inductive and capacitive system were described. Furthermore the laser efficiency was discussed by calculating the electron energy distribution of laser main discharge region. © 2000 Scripta Technica, Electr Eng Jpn, 132(1): 15–21, 2000 相似文献
127.
A Kubota Y Yamada T Hayami K Yasuda Y Someya Y Ihara S Kagimoto R Watanabe T Taminato K Tsuda Y Seino 《Canadian Metallurgical Quarterly》1996,45(12):1701-1705
Gastric inhibitory polypeptide (GIP) potently stimulates insulin secretion from pancreatic islets in the presence of glucose as an incretin. Because the insulinotropic effect of GIP is reduced in NIDDM, it should be clarified whether defects in the GIP receptor gene contribute to the impaired insulin secretion in NIDDM. Using genomic DNA samples from Japanese NIDDM and non-NIDDM subjects, we have investigated the entire coding region of the GIP receptor gene by polymerase chain reaction-single strand conformational polymorphism (PCR-SSCP). We have identified two missense mutations, Gly198-->Cys (Gly198Cys) in exon 7 and Glu354-->Gln (Glu354Gln) in exon 12. Investigation of the function of GIP receptor with either of these mutations reveals a half-maximal stimulation value of GIP-induced cAMP response in Chinese hamster ovary cells expressing the GIP receptor with Gly198Cys of 6.3 +/- 1.2 x 10(-10) mol/l (n = 3), which was considerably higher than that of the normal GIP receptor, 9.4 +/- 3.8 x 10(-12) mol/l GIP (n = 3), whereas that of the GIP receptor with Glu354Gln was not significantly different from that of the normal GIP receptor. To assess the possible role of the GIP receptor gene in genetic susceptibility to NIDDM, we have examined the allelic frequencies of Gly198Cys and Glu354Gln in NIDDM and control subjects. Association studies show no relationship between NIDDM and either of the two mutations. 相似文献
128.
129.
N Ihara R Akagi K Ejiri T Kudo K Furuyama H Fujita 《Canadian Metallurgical Quarterly》1998,439(1-2):163-167
We present a brief overview of a new framework for interdisciplinary collaboration toward understanding the fundamentals of information dynamics in social systems. The need for a new mathematics is noted, and a promising component, soft mathematics, is described. 相似文献
130.
Masatsugu Amano Hiroyuki Takazawa Tadayoshi Tanaka 《Electrical Engineering in Japan》1995,115(6):33-40
Global environmental problems, such as global warming and the effects of acid rain, are expected to become more serious in the future. One methodology for solving this problem uses harmless energy resources. Ocean energy is one of such energy resources. This research involves a study of the OC-OTEC system, which is one type of ocean thermal energy conversion technology. In this system, the steam that drives a turbine is generated in an evaporator and condenses in a condenser after passing through a turbine. However, the steam evaporating rate in an evaporator is affected by the fluctuations of surface sea water temperature and ambient pressure. Therefore, it is necessary to define the dynamic characteristics of the evaporator in order to gain constant power output. This paper presents an analysis as to how evaporation rate is affected when surface sea water temperature and ambient pressure change. Further, we clarify that the dynamic characteristics of the evaporator are more affected by fluctuations in the ambient pressure than in surface sea water temperature. 相似文献