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61.
Lysoglycosphingolipids consist of a sphingoid long-chain base and monosaccharide or complex sugar, and they lack the fatty
acyl group present in native glycosphingolipids. Less than 1 pmol of lyso-Forssman glycolipid and lysoganglioside GM1 were
detected on a thin-layer chromatogram by an enzyme-linked immunochemical coloration method with anti-Forssman glycolipid antibody
(FOM-1) and cholera toxin B subunit, respectively. Each spot between 1 and 100 pmol lyso-Forssman glycolipid was immunostained
as densely as that of the same amount of native Forssman glycolipid. The density of the lyso-Forssman glycolipid spots increased
proportionally with increment in the amount of lysoglycolipid. The density of spots of 0.2–100 pmol lysoganglioside GM1 was
also proportional to the amount of each lyso-GM1 spot. These results indicated that less than 1 to 100 pmol of deacylated
glycosphingolipid was quantifiable by the immunochemical coloration method with sugar chain-specific antibodies. Glycosphingolipid
deacylase, which cleaved an amide bond between the sphingoid long-chain base and fatty acyl chain in ceramide of glycosphingolipid,
was assayed by detecting the lyso-Forssman glycolipid produced. Lipophilic compounds, recovered from an aliquot of the reaction
mixture of Forssman glycolipid and crude enzyme at appropriate times, were analyzed by thin-layer chromatography. It was found
that lyso-Forssman glycolipid was produced in the first 1–2 h by the enzyme and production increased with incubation time.
This coloration method is more sensitive and specific than the visualization method with a non-specific reagent such as orcinol-sulfuric
acid reagent. 相似文献
62.
On the basis of the mathematical notion of “micro-macro duality” for understanding mutual relations between microsopic quantum
systems (micro) and their macroscopic manifestations (macro) in terms of the notion of sectors and order parameters, a general
mathematical scheme is proposed for detecting the state-structure inside of a sector through measurement processes of a maximal
abelian subalgebra of the algebra of observables. For this purpose, the Kac-Takesaki operators controlling group duality play
essential roles, which naturally leads to the composite system of the observed system and the measuring system formulated
by a crossed product. This construction of composite systems will be shown to make it possible for the micro to be reconstructed
from its observational data as macro in the light of the Takesaki duality for crossed products. 相似文献
63.
Masanori Katagiri Shigeyuki Izumi Jun’ya Hori Yoshiko Fujii Keisaku Hatanaka 《Journal of Low Temperature Physics》2007,148(3-4):127-132
The heat transfer properties of 3He bubbles in the nucleate boiling state have been investigated in liquid 3He below 1.0 K by using the shadowgraph method. The temperature difference between the copper surface and liquid 3He temperature was also measured as a function of heat flux in steady state. The size and number of bubbles departing from
the surface in a specific time were compared using photograph recorded by a high-speed video camera at various heat flux and
liquid 3He temperature of 0.5, 0.7 and 1.0 K. 相似文献
64.
Early detection of the invasive alien plant Solidago altissima in moist tall grassland using hyperspectral imagery 总被引:1,自引:0,他引:1
We assessed aerial hyperspectral imagery with high spatial (1.5 m) and spectral (8.9 nm) resolutions for detecting and mapping the early invasion by Solidago altissima of understory vegetation in moist tall grassland. Generalized linear models (GLMs) were constructed to predict S. altissima occurrence using 1.5 m pixels from hyperspectral data collected during the spring when understory vegetation was directly observable from above. A data set of presence–absence derived from percentage cover data was used for the analyses. The values of the area under the receiver operating characteristic (ROC) curve (AUC) ranged from 0.77–0.87 in the validation data set. Three minimum noise fraction (MNF) bands differentiated S. altissima in the best-performing model (selected based on Akaike's information criterion) for the occurrence of S. altissima. The results suggest that the aerial hyperspectral images obtained during spring before the seasonal development of the grass canopy are useful for the early detection and mapping ofS. altissima invading moist tall grassland. 相似文献
65.
Xin Yang Keigo Watanabe Kiyotaka Izumi Kazuo Kiguchi 《International journal of control》2013,86(10):949-963
In this paper, we propose a decentralized control system for transporting a single object by multiple non-holonomic mobile robots. Each agent used in the proposed system has two arms, which can steer around a joint offset from the centre point between two driving wheels. One of these mobile robots acts as a leader, who is assumed to be able to plan and to manipulate the omnidirectional motion of the object by using a resolved velocity control. Other robots, referred to as followers, cooperatively transport the object by keeping a constant relative position with the object using a simple PI control. Different from conventional leader–follower type systems that transport an object by multiple robots in coordination, the present followers can plan an action based on their local coordinate and need no absolute positional information. In addition, as a special case, a system consisting of only two robots is introduced, in which the follower robot not only has an arm length controller to follow the leader but also has a fuzzy controller as an avoidance controller to avoid obstacles or a posture controller to keep a desired posture of the object. Simulation results are given to demonstrate the good performance of the proposed systems. 相似文献
66.
Masashi Takahashi Shin-Ichi Goto Kazuhisa Mori Izumi Mataga 《Frontiers of Materials Science in China》2008,2(4):437-440
The purpose of this study is to clarify the difference of histology and elemental composition of the cervical enamels among
the human permanent teeth. The reground surfaces at the cervical enamels of them were observed under scanning electron microscopy
(SEM). The contents of seven elements were analyzed quantitatively with electron probe microanalyzer (EPMA). The widths of
the rod sections at the cervical enamels were larger than those at the cuspal enamels. The rod sections at the mesial cervical
enamels in the incisors were more obscure and more decayed by acid solution than those in the premolars and molars. The calcium
and phosphorus contents of the cervical enamels were significantly lower than those of the cuspal enamels. The carbon content
of the cervical enamels was significantly higher than that of the cuspal enamels. The calcium and phosphorus contents of the
cervical enamels were the significantly highest in the premolars. The carbon and sodium contents of the cervical enamels were
significantly highest in the premolars. It is thought that the calcification level is lower, while the content of organic
matter is higher at the cervical enamels than those at the cuspal enamels. It is considered that the sodium causes high calcification. 相似文献
67.
M Haki M Tsuchida M Kotsuji S Iijima K Tamura K Koike I Izumi M Tanaka T Hirano 《Canadian Metallurgical Quarterly》1997,20(8):691-693
Gianotti-Crosti syndrome (GCS) is characterized by a distinctive self-limiting acral papular or papulovesicular eruption associated with an underlying viral illness. It has not been previously reported in patients post-bone marrow transplantation. We report a 6-year-old Japanese boy who underwent allogeneic bone marrow transplantation from an unrelated donor for acute lymphoblastic leukemia (ALL) in second remission. He had clinical and histopathologic findings characteristic of GCS and evidence of subclinical infection with cytomegalovirus (CMV) detected by CMV antigenemia assay. It is likely that CMV is the causative agent for the GCS in this case. 相似文献
68.
Origin of the Red Color of Satsuma Copper-Ruby Glass as Determined by EXAFS and Optical Absorption Spectroscopy 总被引:1,自引:0,他引:1
Izumi Nakai Chiya Numako Hideo Hosono Kazuo Yamasaki 《Journal of the American Ceramic Society》1999,82(3):689-695
The origin of the ruby color of Satsuma glass, a famous copper-ruby glass produced in Japan in the mid-19th century, has been examined by electron microprobe analysis (EPMA), X-ray absorption fine structure (XAFS), and optical absorption spectroscopy analyses. Cu K XAFS analysis reveals that the major component of copper in the ruby glass consists of Cu(I) ions in the glass structure. This species is distinct from Cu2 O (cuprite), which we conclude is not responsible for the ruby color. Optical absorption spectra measured at 300 and 77 K clearly distinguishes the absorptions due to the colloidal particles of metallic copper and Cu2 O. It is concluded that the trace amount of copper in the ruby glass, which is below the detection limit of the EPMA and XAFS techniques, exists as metallic copper particles of nanometer size and is responsible for the ruby-red appearance of the Satsuma glass. 相似文献
69.
Izumi Kita Tomohiro Shibata Yuki Kamiya Daishi Kato Kazuo Kunieda Keiji Yamada Kazushi Ikeda 《Artificial Life and Robotics》2009,14(3):375-378
To increase the productivity of knowledge workers, it is necessary to manage their organization so that they are motivated
to collaborate with each other for their synergy. However, it is difficult for managers to grasp the explicit interactions
of workers in the organization all the time. Owing to advanced communications technology, and the reduced size and improved
capabilities of computers, we are able to record group behaviors as logging data in the office. The aim of this study is to
extract features of group behavior from long-range office-logging data. We apply principal component analysis to the data
matrix whose element is the mean travel velocity calculated from an individual’s trajectory per day. The results demonstrate
the feasibility of our approach, since nontrivial informative group features can be extracted. 相似文献
70.
The effect of plastic deformation mode on tensile properties of quenched commercial β-phase titanium alloys has been investigated
at approximately constant grain size and oxygen content. In addition, stability of β-phase has been estimated from ω-reflections
or diffuse streaking in electron diffraction patterns in a manner similar to the previous works on binary β-phase titanium
alloys. Dominant mode of plastic deformation is {332}<113> twinning in the alloys with large instability of β-phase, such
as Ti-11.5Mo-6Zr-4. 5Sn and Ti-15Mo-5Zr, and is crystallographic slip in the alloys with small instability of β-phase, such
as Ti-15Mo-5Zr-3Al, Ti-3Al-8V-6Cr-4Mo-4Zr, Ti-15V-3Cr-3Al-3Sn, Ti-8Mo-8V-2Fe-3Al, and Ti-13V-11C-3Al. Twinning leads to low
yield strength and large elongation, while slip results in high yield strength and small elongation in agreement with binary
and termary β-phase titanium alloys. 相似文献