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101.
Yoshiki Nakajima Yoshihide Fujisaki Tatsuya Takei Hiroto Sato Mitsuru Nakata Mitsunori Suzuki Hirohiko Fukagawa Genichi Motomura Takahisa Shimizu Yukie Isogai Koichi Sugitani Takeyoshi Katoh Shizuo Tokito Toshihiro Yamamoto Hideo Fujikake 《Journal of the Society for Information Display》2011,19(12):861-866
Abstract— A 5‐in. QVGA flexible AMOLED display driven by OTFTs has been fabricated at a low temperature of 130°C. A polyethylene naphthalate film was used as the flexible substrate and an olefin polymer was used as the gate insulator for the OTFT. This layer was formed by spin‐coating and baking at 130°C. Pentacene was used as the organic semiconductor layer. The OTFT performance to drive the flexible display with QVGA pixels in terms of current on/off ratio, carrier mobility, and spatial uniformity on the backplane have been obtained. Phosphorescent and fluorescent OLEDs were used as light‐emitting devices on a flexible display. Those layers were formed by vacuum deposition. After the flexible display was fabricated, a clear and uniform moving image was obtained on the display. The display also showed a stable moving image even when it was bent. 相似文献
102.
Yoshiki Nakajima Tatsuya Takei Yoshihide Fujisaki Hirohiko Fukagawa Mitsunori Suzuki Genichi Motomura Hiroto Sato Toshihiro Yamamoto Shizuo Tokito 《Journal of the Society for Information Display》2011,19(1):94-99
Abstract— The image quality of an OTFT‐driven flexible AMOLED display has been improved by enhancing the performance of OTFTs and OLEDs. To reduce the operating voltage of OTFTs on a plastic film, Ta2O5 with a high dielectric constant was used as a gate insulator. The organic semiconductor layer of the OTFT was successfully patterned by a polymer separator, which is an isolating wall structure using an organic material. The OTFT performance, such as its current on/off ratio, carrier mobility, and spatial uniformity on the backplane, was enhanced. A highly efficient phosphorescent OLED was used as a light‐emission device. A very thin molybdenum oxide film was introduced as a carrier‐injection layer on a pixel electrode to reduce the operating voltage of the OLED. After an OTFT‐driven flexible AMOLED display was fabricated, the luminance and uniformity on the display was improved. The fabricated display also showed clear moving images, even when it was bent at a low operating voltage. 相似文献
103.
Hiroto Saigo Sebastian Nowozin Tadashi Kadowaki Taku Kudo Koji Tsuda 《Machine Learning》2009,75(1):69-89
Graph mining methods enumerate frequently appearing subgraph patterns, which can be used as features for subsequent classification
or regression. However, frequent patterns are not necessarily informative for the given learning problem. We propose a mathematical
programming boosting method (gBoost) that progressively collects informative patterns. Compared to AdaBoost, gBoost can build
the prediction rule with fewer iterations. To apply the boosting method to graph data, a branch-and-bound pattern search algorithm
is developed based on the DFS code tree. The constructed search space is reused in later iterations to minimize the computation
time. Our method can learn more efficiently than the simpler method based on frequent substructure mining, because the output
labels are used as an extra information source for pruning the search space. Furthermore, by engineering the mathematical
program, a wide range of machine learning problems can be solved without modifying the pattern search algorithm. 相似文献
104.
Temperature programmed desorption (TPD), IR spectroscopy and chemical trapping of the surface species with H2O revealed that the TPD peak of CO frequently assigned to zinc formate species, which were formed in the course of the methanol synthesis from CO-H2, arose from zinc methoxide species. 相似文献
105.
Y. Kodera H. Nishimura A. Matsushima M. Hiroto Y. Inada 《Journal of the American Oil Chemists' Society》1994,71(3):335-338
Lipases from various microorganisms were chemically modified with polyethylene glycol derivatives: 2,4-bis[O-methoxypoly(ethylene glycol)]-6-chloro-s-triazine (activated PEG2, a chain-shaped polymer) and copolymer of polyoxyethylene allyl methyl diether and maleic anhydride (activated PM, a comb-shaped
polymer). Because each polymer is amphipathic, the modified lipases become soluble not only in aqueous solution but also in
hydrophobic media. They exhibit potent catalytic actions for ester synthesis and ester exchange reactions, the reverse reaction
of hydrolysis, in transparent organic solvents and also in oily substrates without organic solvents. With PEG2-lipases, macrocyclic lactone and gefarnate (geranyl farnesylacetate) were synthesized in high yields from 16-hydroxy-hexadecanoic
acid ethyl ester and from farnesylacetic acid and geraniol in organic solvents, respectively. The modified lipase catalyzed
the esterification preferentially with the (R)-isomer of secondary alcohols. Because the ester synthesis reactions with modified lipase proceeded in the transparent benzene
system, the kinetic parameters (Michaelis constant and maximum velocity) were obtained by reciprocal plotting according to
the Michaelis equation. With comb-shaped polymer as modifier, PM-lipase catalyzed effectively the reverse reaction of hydrolysis
in organic solvents. The properties of each modified lipase are discussed in relation to those of the nonmodified lipase.
Presented at the 84th Annual Meeting of the American Oil Chemists' Society held on April 25–29, 1993, in Anaheim, CA. 相似文献
106.
Hiroto Sato Hideo Fujikake Takeshi Murashige Hiroshi Kikuchi Taiichiro Kurita Fumio Sato 《Journal of the Society for Information Display》2005,13(6):461-468
Abstract— We demonstrated an A4‐paper‐sized flexible ferroelectric liquid‐crystal (FLC) color displays fabricated by using a new plastic‐substrate‐based process which was developed for large‐sized devices. Finely patterned color filters and ITO electrodes were formed on a plastic substrate by a transfer method to avoid surface roughness and thermal distortion of the substrate, which induce disordering of the FLC molecular alignment. The thickness of an FLC/monomer solution sandwiched by two plastic‐film substrates was well controlled over a large area by using flexographic printing and lamination techniques. Molecular‐aligned polymer walls and fibers were formed in the FLC by a two‐step photopolymerization‐induced phase‐separation method using UV‐light irradiation. A fabricated A4‐sized flexible‐sheet display for color‐segment driving was able to exhibit color images even when it was bent. 相似文献
107.
Kazuhiko Ogimoto Tatsuo Masuda Hiroto Inabe Toshihiko Komukai Syunichi Tsuruta Toyofumi Momotake 《Electrical Engineering in Japan》1994,114(1):54-64
With the increase in the size and capacity of electric power systems and the growth of widespread interconnections, the problem of power oscillations due to the reduced system damping has become increasingly serious. Since a Superconducting Magnetic Energy Storage (SMES) unit with a self-commutated converter is capable of controlling both the active (P) and reactive (Q) power simultaneously and quickly, increasing attention has been focused recently on power system stabilization by SMES control. This paper describes the effects of SMES control on the damping of power oscillations. By examining the case of a single generator connected to an infinite bus through both theoretical analyses and experimental tests (performed with a SMES unit with maximum stored energy of 16 kJ and an artificial model system), the difference in the effects between P and Q control of SMES is clarified as follows:
- 1 In the case of P control, as the SMES unit is placed closer to the terminal of the generator, the power oscillations will decay more rapidly.
- 2 In the case of Q control, it is most effective to install the SMES unit near the midpoint of the system.
- 3 By comparing the P control with Q control, the former is more effective than the latter based on the conditions that the SMES unit location and the control gain are the same.
108.
Kazuhisa Mukai Akihiko Tabuchi Tetsuya Nakada Takashi Shibuya Hiroto Chaen Shigeharu Fukuda Masashi Kurimoto Yoshio Tsujisaka 《Starch - St?rke》1997,49(1):26-30
The optimum conditions for the production of trehalose from starch were investigated using two thermostable enzymes, maltooligosyl trehalose synthase (MTSase) and maltooligosyl trehalose trehalohydrolase (MTHase), from Sulfolobus acidocaldarius ATCC 33909. The optimum pH was 5.5 and the optimum temperature was 55—57°C using isoamylase from Pseudomonas amyloderamosa as a debranching enzyme. The addition of CGTase to the reaction mixture during the saccharification process caused an increase in trehalose and a decrease in maltose and maltotriose. Isoamylase was better than pullulanase as a debranching enzyme. The yield of trehalose was independent of the type of starch used. Under optimum conditions, the yield of trehalose from corn starch at 30% concentration was more than 82%. 相似文献
109.
Hiroto Sakashita Ayako Ono Yuta Nakabayashi 《International Journal of Heat and Mass Transfer》2010,53(7-8):1554-1562
Saturated pool boiling of 2-propanol/water mixtures on a 12 mm diameter horizontal disk under atmospheric pressure was investigated. The CHF of the mixtures increased up to 1.7 times the CHF of water at 3.0–4.7 mol% concentrations of 2-propanol. To examine the mechanism of the CHF enhancement in the mixtures, liquid–vapor structures close to the heating surface were measured using a conductance probe. It was found that in the boiling of the mixtures, liquid–vapor structures show strong non-uniformity in the radial direction of the heating surface. The void fractions at 0.1–1 mm above the heating surface are small at the central region and large near the periphery of the heating surface. The liquid layer between the vapor mass and the heating surface is considerably thicker than that of water at the central region and becomes thinner near the periphery of the heating surface. This thicker liquid layer is likely to be the cause of the CHF enhancement in the 2-propanol/water mixtures. 相似文献
110.
Wei Xiong Wenxin Liu Shogo Nishida Daichi Komiyama Wei Liu Jotaro Hirakawa Hiroto Kawashima 《International journal of molecular sciences》2021,22(18)
Asthma is an allergic disease that causes severe infiltration of leukocytes into the lungs. Leukocyte infiltration is mediated by the binding of sialyl Lewis X (sLex) glycans present on the leukocytes to E-and P-selectins present on the endothelial cells at the sites of inflammation. Here, we found that mouse eosinophils express sLex glycans, and their infiltration into the lungs and proliferation in the bone marrow were significantly suppressed by an anti-sLex monoclonal antibody (mAb) F2 in a murine model of ovalbumin-induced asthma. The percentage of eosinophils in the bronchoalveolar lavage fluid and bone marrow and serum IgE levels decreased significantly in the F2-administered mice. Levels of T helper type 2 (Th2) cytokines and chemokines, involved in IgE class switching and eosinophil proliferation and recruitment, were also decreased in the F2-administered mice. An ex vivo cell rolling assay revealed that sLex glycans mediate the rolling of mouse eosinophils on P-selectin-expressing cells. These results indicate that the mAb F2 exerts therapeutic effects in a murine model of allergen-induced asthma, suggesting that sLex carbohydrate antigen could serve as a novel therapeutic target for allergic asthma. 相似文献