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121.
C. Curceanu M. Bazzi G. Beer L. Bombelli A. M. Bragadireanu M. Cargnelli G. Corradi A. d??Uffizi C. Fiorini T. Frizzi F. Ghio B. Girolami C. Guaraldo R. S. Hayano M. Iliescu T. Ishiwatari M. Iwasaki P. Kienle P. Levi Sandri A. Longoni V. Lucherini J. Marton S. Okada D. Pietreanu K. Piscicchia M. Poli Lener T. Ponta A. Rizzo A. Romero Vidal A. Scordo H. Shi D. L. Sirghi F. Sirghi H. Tatsuno A. Tudorache V. Tudorache O. Vazquez Doce E. Widmann J. Zmeskal 《Few-Body Systems》2011,50(1-4):447-449
The DA??NE electron?Cpositron collider at the Laboratori Nazionali di Frascati of INFN has made available a unique quality low-energy negative kaons ??beam??. The SIDDHARTA experiment used this beam to perform unprecedented precision measurements on kaonic atoms, while the AMADEUS experiment plans to perform in the coming years precision measurements on kaon?Cnuclei interactions at low-energies, in particular to study the kaonic nuclei. The two experiments are briefly presented in this paper. 相似文献
122.
D. Nakamura K. Okazaki I. A. Palani M. Higashihata T. Okada 《Applied Physics A: Materials Science & Processing》2011,103(4):959-963
Single-crystalline ZnO nanowires on a sapphire substrate have been synthesized by a nanoparticle-assisted pulsed-laser deposition
(NAPLD) using a pure and Sb2O3 doped ZnO target. Low density and vertically well-aligned ZnO nanowires were grown on hexagonal cone-shape ZnO cores by introduction
of a ZnO buffer layer. More than 90% of the ZnO cores of the Sb-induced ZnO nanowires are formed in the same size of 400 nm.
The ZnO nanowires consist of single-crystalline wurtzite ZnO crystal and grow along [0001] direction. The room-temperature
photoluminescence spectrum exhibited a strong ultraviolet emission at around 380 nm and a relatively low broad band emission
in the visible region, indicating a low concentration of structural defect in the nanowires. Sb can be used as one of the
effective additives to control the morphology and alignment of ZnO nanowires synthesized by NAPLD. 相似文献
123.
Hisatoshi Kura Kan Fujihara Akira Kimura Teruhisa Ohno Michio Matsumura Yoshinori Hirata Tadashi Okada 《Journal of Polymer Science.Polymer Physics》2001,39(23):2937-2946
The anthracene‐sensitized photodecomposition of diphenyliodonium hexafluorophosphate was studied in an epoxy matrix. From steady‐state photolysis, the generation of protons, which are considered to be the actual initiators of the polymerization of epoxides, was confirmed. In addition, 9‐phenylanthracene was detected as a main product from anthracene. From time‐resolved laser‐flash photolysis, a broad absorption band with a peak at about 500 nm was observed that was thought to be due to the precursor of 9‐phenylanthracene. On the basis of these results, we propose electron transfer from anthracene in the excited singlet state to the diphenyliodonium cation as the initial step of photoacid generation. This process is followed by fast chemical reactions, which generate 9‐phenylanthracene and protons, and back electron transfer from the diphenyliodine radical to the anthracene cation radical. © 2001 John Wiley & Sons, Inc. J Polym Sci Part B: Polym Phys 39: 2937–2946, 2001 相似文献
124.
125.
126.
Tsuneo Suzuki Kiyoshi Tanemura Chizuko Okada The Late Kenichi Arai Akira Awaji Takahachi Shimizu Takaaki Horaguchi 《Journal of heterocyclic chemistry》2001,38(6):1409-1418
7‐Alkanoyloxy‐3,7‐dimefhyl‐7,8‐dihydro‐6H‐isochromene‐6,8‐diones 12‐15 were synthesized in 69‐16% yields from the reaction of 2,4‐dihydroxy‐3‐methyl‐6‐(2‐oxopropyl)benzaldehyde 11 with p‐toluenesulfonic acid in various carboxylic acids such as acetic acid, propionic acid, butyric acid and heptanoic acid followed by oxidation with lead tetraacetate. On the other hand, (±)‐daldinin A 5 (oleate) was not obtained using oleic acid as a medium. In the cases of heptanoic acid and oleic acid, esters 16 and 17 were produced in 23 and 9% yields, respectively. 6,8‐Dihydroxy‐3,7‐dimethyl‐2‐benzopyrylium p‐toluenesulfonate 31 is considered as the intermediate for the production of 12‐15. Overall yields of isochromenes 12‐15 were 26‐6% starting from 2‐methylresorcinol for seven steps. 相似文献
127.
Summary Boric and germanic acids were detected by a conductivity detector after ion-exclusion Chromatographic separation on a cation-exchange resin. Neither acid could be directly measured by a conductivity detector because they were very weak. However, use of eluents of polyol compounds permitted their determination by a conductivity detector. With 0.1 M of fructose as eluent, it was possible to detect 0.5 ppb of boric acid (as B) and 1.5 ppb of germanic acid (as Ge).
HPLC-Bestimmung von Borsäure und Germaniumsäure mit konduktometrischer Detection
Zusammenfassung Beide Säuren wurden mit Hilfe eines Leitfähigkeitsdetektors nach Trennung durch Ionenausschluß-Chromatographie an einem Kationenaustauscher analysiert. Eine direkte Messung war wegen der Schwäche der Säuren nicht möglich; daher wurde eine Elution mit Polyolen durchgeführt. Mit 0,1 M Fructoselösung als Eluens konnten noch 0,5 ppb Borsäure (als B) und 1,5 ppb Germaniumsäure (als Ge) nachgewiesen werden.相似文献
128.
Li-Xian Sun A.Mahipal Reddy Akiko Takatsu Tatsuhiro Okada 《Analytica chimica acta》2003,487(1):109-116
A slab optical waveguide (SOWG) has been used for study of adsorption of both methylene blue (MB) and new methylene blue (NMB) in liquid-solid interface. Adsorption characteristics of MB and NMB on both bare SOWG and silanized SOWG by octadecyltrichlorosilane (ODS) were compared. The simultaneous determinations of both MB and NMB were explored by flow injection SOWG spectrophotometric analysis and artificial neural networks (ANNs) for the first time. Concentrations of MB and NMB were estimated simultaneously with the ANNs. Results obtained with SOWG were compared with those got by conventional UV-visible spectrophotometry. 相似文献
129.
A. Takahashi D. Nakamura K. Tamaru T. Akiyama T. Okada 《Applied physics. B, Lasers and optics》2008,92(1):73-77
We describe a comparative study of the emission characteristics of debris from CO2 and Nd:YAG laser-produced tin plasmas for developing an extreme-ultraviolet (EUV) lithography light source. Tin (Sn) ions
and droplets emitted from a Sn plasma produced by a CO2 laser or an Nd:YAG laser were detected using Faraday cups and quartz crystal microbalance (QCM) detectors, respectively.
The droplets were also monitored by using silicon substrates as witness plates. The results showed higher ion kinetic energy
and lower particle emission for the CO2 laser than the Nd:YAG laser for the same laser energy (50 mJ). The average ion energy was 2.2 keV for the CO2 laser-produced plasma (LPP), and 0.6 keV for the Nd:YAG LPP. The debris accumulation of the CO2 LPP detected by the QCM detectors, however, was less than one fourth of that of the Nd:YAG LPP for the same laser energy.
Using ion energy data, the mirror lifetime is estimated for the CO2 and Nd:YAG lasers. In both cases, the upper limit of the number of shots was of the order of 106.
PACS 52.38.DX; 52.38.Ph; 52.38.Mf 相似文献
130.
Luis M. Murillo-Mora Katsuyuki Okada Toshio Honda Jumpei Tsujiuchi 《Optical Review》1994,1(2):195-197
An image processing technique to display a distortion-free reconstructed image from a rainbow type conical holographic stereogram is proposed. The method consists of forming a new set of 2D images from the original set by applying an image process. The image processing method is made through ray tracing equations. The results show that the performance of the proposed method is good as it removes distortion of the image. 相似文献