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排序方式: 共有4092条查询结果,搜索用时 31 毫秒
931.
Performance evaluation of edge-computing platforms for the prediction of low temperatures in agriculture using deep learning 总被引:1,自引:0,他引:1
Guillén Miguel A. Llanes Antonio Imbernón Baldomero Martínez-España Raquel Bueno-Crespo Andrés Cano Juan-Carlos Cecilia José M. 《The Journal of supercomputing》2021,77(1):818-840
The Journal of Supercomputing - The Internet of Things (IoT) is driving the digital revolution. AlSome palliative measures aremost all economic sectors are becoming “Smart” thanks to... 相似文献
932.
Javier Fontecha Lourdes Amigo Miguel Angel de la Fuente Manuela Juarez Mercedes Ramos Mohamed El-Shikh Safinaz El-Shibiny 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1990,191(4-5):310-312
Summary The changes in the proteins and fats of Ras cheese prepared from ultrafiltered milk (UF) were followed during ripening. The soluble protein fraction was made up of whey protein which resisted hydrolysis during ripening. The insoluble protein fraction of fresh cheese was made up mainly of-casein,-casein ands1-I, indicating pronounced proteolysis during the salting step. Further ripening was accompanied with decrease ins1-I and increase in-casein. The free fatty acids (FFA) of UF Ras cheese increased with advanced ripening. The pattern of FFA in Ras cheese was similar to that of bovine milk triacylglycerols.
Veränderungen in der Zusammensetzung von Ras-Käse aus ultrafiltrierter Milch während der Reifung
Zusammenfassung Es wurden die Veränderungen der Proteine und der Fettfraktionen von Ras-Käse aus ultrafiltrierter Milch während der Reifung studiert. Die lösliche Proteinfraktion bestand aus Molkeproteinen, die der Hydrolyse während der Reifung widerstand. Die unlösliche Proteinfraktion des frischen Käses bestand aus-Casein,-Casein unds1-I, was auf starke Proteolyse während des Einsalzens hinweist. In der nachfolgenden Reifung wurde eine Abnahme dess1-Caseins und eine Zunahme der-Caseine beobachtet. Die freien Fettsäuren des Ras-Käses nahmen während der Reifung zu. Das Muster der freien Fettsäuren des Ras-Käses und das der Milchtriglyceride sind ähnlich.相似文献
933.
Polyacrylamide was synthesized by a free‐radical inverse emulsion technique and optimized via statistical experimental design, with the objective of developing a polymer with a high viscosity within this synthesis technique. The factors considered to affect the response variable, the viscosity of the polymer, were initiator (K2S2O8) concentration (c), reaction temperature (T), stirring rate (r), and initiator addition method (s, batch or dropwise). An experimental design of the four factors at two levels (24) was carried out to study the effect of these process variables on the viscosity of the polymer. The results show that the main factor having an effect on the viscosity was T, with smaller contributions from r and cs. The optimum combination of values for the factors yielding maximum viscosity was T = 65°C, c = 1 mM, r = 230 rpm, and s = dropwise addition. A close fit was obtained between the experimental and predicted values of the viscosity of the polymer solution. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 5719–5724, 2006 相似文献
934.
Shin-ichi Todoroki Shigeki Sakaguchi Miguel Peeters 《Journal of the American Ceramic Society》1997,80(2):313-316
The refractive index dispersion and infrared (IR) reflection spectra of soda magnesium silicate glasses with low Rayleigh scattering were measured to evaluate their potential for use in fabricating ultralow-loss fibers. The zero-material dispersion wavelength (λ0 ) was found to be around 1.5 μm, which is one of the key wavelengths in the present telecommunication system. The compositional dependence of λ0 was found to relate to the population of nonbridging oxygen. Since the oscillation strength and frequency of the Si—O stretching vibrations of the glasses were found to be smaller than those of silica glass, their IR absorption loss was considered to be less than that of silica glass. The minimum loss due to the intrinsic factors, Rayleigh scattering and IR absorption, was estimated to be 0.06 dB/km at 1.6μm. 相似文献
935.
Raman spectroscopy study of HM carbon fibres: effect of plasma treatment on the interfacial properties of single fibre/epoxy composites 总被引:1,自引:0,他引:1
Miguel A. Montes-MoránRobert J. Young 《Carbon》2002,40(6):845-855
The effect of an oxygen plasma treatment upon the structural and morphological properties of high-modulus carbon fibres has been studied by means of several characterisation techniques. Scanning electron microscopy showed that there were only minor changes of the morphology of the fibres following treatment. X-ray diffraction traces revealed that there were differences in structural parameters between the untreated fibres but no further modifications in the crystalline structure were detected after the plasma oxidation. Raman spectroscopy was used to follow the changes on the fibre surface structure following treatment. The peak positions and widths of the four main Raman bands (D, G, D′ and G′) were determined, with no significant changes observed after the surface treatment. A relationship between the width of the G band and the crystal parameter d002 was found, with the magnitudes of both decreasing as the fibre modulus increased. A reference order parameter ID/(ID+IG) ratio was calculated from the intensities of D and G bands. The treated fibres exhibited a more highly disordered surface structure that the untreated ones, as revealed by the increase of ID/(ID+IG) after the plasma oxidation. 相似文献
936.
M. D. Virto Jose Miguel Lascaray Rodolfo Solozabal Mertxe de Renobales 《Journal of the American Oil Chemists' Society》1991,68(5):324-327
Lipase fromCandida rugosa catalyzed the hydrolysis of inedible beef tallow and pork lard (edible and inedible) in the presence of organic solvents
at temperatures below the melting point of the fat. Reactions were carried out at 50% substrate with 180 lipase units per
gram of fat in a two-liter reactor. In the presence of isooctane (5-10%) beef tallow yielded 94% hydrolysis in 24 hr both
at 37° and 31°C. Edible pork lard yielded 97% hydrolysis under these conditions and at temperatures as low as 25°C, while
inedible lard gave hydrolysis intermediate between the other two fats. 相似文献
937.
Norena Martin-Dorta Isabel Sanchez-Berriel Miguel Bravo Juan Hernandez Jose Luis Saorin Manuel Contero 《Multimedia Tools and Applications》2014,73(3):1575-1595
This paper presents a novel spatial instruction system for improving spatial abilities of engineering students. A 3D mobile game application called Virtual Blocks has been designed to provide a 3D virtual environment to build models with cubes that help students to perform visualization tasks to promote the development of their spatial ability during a short remedial course. A validation study with 26 freshman engineering students at La Laguna University (Spain) has concluded that the training had a measurable and positive impact on students’ spatial ability. In addition, the results obtained using a satisfaction questionnaire show that Virtual Blocks is considered an easy to use and stimulating application. 相似文献
938.
Moraes MC Millar JG Laumann RA Sujii ER Pires CS Borges M 《Journal of chemical ecology》2005,31(6):1415-1427
Olfactometer bioassays showed that odors from mature Thyanta perditor males attracted females but not males. Furthermore, odors from females did not attract either sex, indicating that like other phytophagous pentatomid bugs, the males produce a sex pheromone. Attraction appeared to peak in late afternoon to evening. The headspace volatiles collected from male and female T. perditor were analyzed by GC-MS and HPLC. A male-specific compound, methyl (2E,4Z,6Z)-decatrienoate (2E,4Z,6Z-10:COOMe), was identified along with a number of other compounds found in extracts from both sexes. Bioassays carried out with 2E,4Z,6Z-10:COOMe showed it was as attractive to females as the crude extract of male volatiles, suggesting that the male-produced sex pheromone consists of 2E,4Z,6Z-10:COOMe as a single component. Consecutive volatiles collections from males showed that 2E,4Z,6Z-10:COOMe began appearing in extracts from males about 9 d after the final molt, as the males became sexually mature. 相似文献
939.
Volatiles fromEuschistus obscurus males were found to be attractive to conspecific females in bioassays. A new type of olfactometer assembled from commercially available glassware was used to bioassay aeration extracts of the Nearctic stink bug,E. obscurus. Fractionated extracts suggest that pheromonal activity is associated with late-eluting, male-specific compounds. Research onE. obscurus offered a means to indirectly study the pheromone of the Neotropical pest species,E. heros, without importing this soybean pest into the United States.Research performed as a Visiting Scientist at: USDA-ARS, Insect Chemical Ecology Laboratory, Beltsville, Maryland 20705. Mention of commercial products does not constitute an endorsement by the U.S. Department of Agriculture.Supported by a grant from CNPq. 相似文献
940.
Paolo Bottoni Kamen Kanev Nikolay Mirenkov Miguel Ceriani 《International Journal of Software and Informatics》2015,9(3):307-329
We propose a framework for the construction of collaborative services, based
on a technique for coding content - generated by authoritative organisations or by users -
on physical surfaces, which thus become supports to different forms of interaction. In
particular, we illustrate features of the conceptual framework of augmented surfaces,
expressed via a UML profile, and of the architectural infrastructure supporting the flexible
development of interactive applications and present different scenarios of interaction based
on this framework. We argue that the possibility of combining situtated interaction on
surfaces with other types of interaction would create a collaboration space in which
documents and objects allow seamless access to both centralised and distributed
information. 相似文献