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71.
In the context of coalition formation games a player evaluates a partition on the basis of the set she belongs to. For this
evaluation to be possible, players are supposed to have preferences over sets to which they could belong. In this paper, we
suggest two extensions of preferences over individuals to preferences over sets. For the first one, derived from the most
preferred member of a set, it is shown that a strict core partition always exists if the original preferences are strict and
a simple algorithm for the computation of one strict core partition is derived. This algorithm turns out to be strategy proof.
The second extension, based on the least preferred member of a set, produces solutions very similar to those for the stable
roommates problem.
Received August 1998/Final version June 20, 2000 相似文献
72.
Maťko Igor Šauša Ondrej Čechová Katarína Jesenák Karol 《Journal of Thermal Analysis and Calorimetry》2018,133(1):247-254
Journal of Thermal Analysis and Calorimetry - The aim of this study is to characterize adsorbed liquid in montmorillonite structure for different levels of adsorption by both thermoanalytical and... 相似文献
73.
Anoxic granulation process with four different inocula was monitored in a laboratory post-denitrification up-flow sludge bed
(USB) reactor. Wastewater containing 20 mg L−1 NO3-N and methanol as an organic carbon source was used. Gradual increase of mass volumetric loading (B
v) and hydraulic loading (γ) resulted in spontaneous granulation of anoxic biomass both from flocculant activated sludge and from anaerobic granulated
sludge. With flocculant activated sludge as the inoculum, anoxic granules sedimentation properties and maximum loadings of
the USB reactor depended on the sludge volume index (SVI) of the inoculum. B
v,max achieved in the USB reactor with flocculant inoculum from a municipal wastewater treatment plant (SVI = 208 mL g−1) was only 4.2 kg of COD per m3 per day and 0.7 kg of NO3-N per m3 per day. B
v,max using flocculant inoculum from an industrial wastewater treatment plant (SVI = 170 mL g−1) was 8.1 kg of COD per m3 per day and 1.35 kg of NO3-N per m3 per day. With anaerobic granulated inoculum (SVI range 8–11 mL g−1), markedly higher loadings in the USB reactor and lower SVI values of anoxic granulated biomass were achieved. Values of
B
v,max were in the range of 16.1–22.4 kg of COD per m3 per day and of 2.7–3.7 kg of NO3-N per m3 per day (depending on the inoculum and the granulation procedure). It was proved that anaerobic granulated sludge is not
just an inoculum, it is also a carrier for new denitrification biomass. 相似文献
74.
Enantioselective column coupled electrophoresis employing large bore capillaries hyphenated with tandem mass spectrometry for ultra‐trace determination of chiral compounds in complex real samples 下载免费PDF全文
Juraj Piešťanský Katarína Maráková Marián Kovaľ Emil Havránek Peter Mikuš 《Electrophoresis》2015,36(24):3069-3079
A new multidimensional analytical approach for the ultra‐trace determination of target chiral compounds in unpretreated complex real samples was developed in this work. The proposed analytical system provided high orthogonality due to on‐line combination of three different methods (separation mechanisms), i.e. (1) isotachophoresis (ITP), (2) chiral capillary zone electrophoresis (chiral CZE), and (3) triple quadrupole mass spectrometry (QqQ MS). The ITP step, performed in a large bore capillary (800 μm), was utilized for the effective sample pretreatment (preconcentration and matrix clean‐up) in a large injection volume (1–10 μL) enabling to obtain as low as ca. 80 pg/mL limits of detection for the target enantiomers in urine matrices. In the chiral CZE step, the different chiral selectors (neutral, ionizable, and permanently charged cyclodextrins) and buffer systems were tested in terms of enantioselectivity and influence on the MS detection response. The performance parameters of the optimized ITP – chiral CZE‐QqQ MS method were evaluated according to the FDA guidance for bioanalytical method validation. Successful validation and application (enantioselective monitoring of renally eliminated pheniramine and its metabolite in human urine) highlighted great potential of this chiral approach in advanced enantioselective biomedical applications. 相似文献
75.
Jozef Rychlý Alexander Búcsi Katar ína Csomorov Lyda Rychl Dagmar imúnkov 《Macromolecular Symposia》1993,74(1):193-208
A correlation has been found between limiting oxygen index and tendency towards decomposition into volatiles as determined from nonisothermal thermogravimetry for polyethylene charged with the mixtures of Al(OH)3 and Mg(OH)2 or MgCO3. An interpretation based on the model of ignition and burning of polymers has been put forward and a dependence of heat transfer coefficient on temperature of ignition and initial mass of sample was found. 相似文献
76.
77.
Katarína Klubicová Monika Szabová Ludovit Skultety Gabriela Libiaková Andrea Hricová 《Chemical Papers》2016,70(10):1322-1335
Amaranth, a staple food source in ancient Aztec, Maya and Inca cultures, has been recognised as a 21st century crop. This superfood, known as Inca wheat, attracts the worldwide attention of researchers and farmers for its superior agronomical and technological properties but especially because of its exceptional nutritive value. A combination of two-dimensional electrophoresis (2-DE) with MS facilitating the effective differentiation of 13 classes of Amaranthus cruentus L. “Ficha” mature seed proteins was used in the current study. The best resolution results in the 2-DE were obtained using immobilised pH gradients strips with a pH range of 5–8. Out of the 461 spots detected, 249 were successfully identified by LC-MS/MS analysis, making this the most inclusive protein profile of mature amaranth seed. Unknown proteins represented the most abundant class of proteins (59), the second most abundant category was related to energy (46) and then to seed storage proteins (43). These results expand the knowledge of the amaranth seed proteome and it is expected that the data presented here will contribute to further in-depth characterisation of Amaranthus seeds. 相似文献
78.
79.
Vladimíra Tomečková Mária Reháková Gabriela Mojžišová Tommy Wadsten Katarína Zelenáková Vladimír Komanický 《光谱学快报》2013,46(2):63-72
The aim of this study was preparation of modified forms of natural zeolite of the clinoptilolite type with different content of pharmacologically active natural substances escin and horse chestnut extract and their characterization by infrared spectroscopy, fluorescence spectroscopy, thermal analysis, röntgen diffraction powder technique, and determination of the surface areas and the pore volumes by low-temperature adsorption of nitrogen. Escin and horse chestnut extract have also been investigated by atomic force microscopy. The analyses confirmed the presence of escin and horse chestnut extract in the modified zeolitic products. The modified forms of natural zeolite of the clinoptilolite type with low content of escin and horse chestnut extract have been used for preliminary in vitro study of their anticancer effects on cancer cell lines by an in vitro colorimetric assay for assessing cell viability. To understand the growth inhibitory effects, the human cervical carcinoma cells, human T-cell acute lymphoblastic leukemia, breast cancer cells, human alveolar basal epithelial cells, and human breast adenocarcinoma cells were treated with various doses of the modified zeolitic products. The modified forms were the most effective in adenocarcinomic human alveolar basal epithelial cells. 相似文献
80.
Renáta Oriňáková Katarína Rošáková Andrej Oriňák Miriam Kupková Jean Nicolas Audinot Henri-Noël Migeon Jan T. Andersson Karol Kovaľ 《Journal of Solid State Electrochemistry》2011,15(6):1159-1168
The formation of composite electrochemical coatings of a nickel matrix with boron microparticles was investigated. Electrolytical
nickel–boron layers were deposited on a paraffin-impregnated graphite electrode in a stirred heterogeneous system formed by
a Watts-type nickel plating bath and dispersed boron powder particles. The polarisation behaviour of the composite plating
bath as a function of the boron particle loading was examined. The effect of deposition conditions, as well as of the amount
of boron powder in the plating bath on the boron content in the composite Ni–B coatings, was examined. The composite coating
structure was established using scanning electron microscopy and light optical microscopy. The distribution of boron particles
in the composite deposits was investigated by dynamic secondary ion mass spectrometry. The boron particles content was determined
gravimetrically. The obtained results suggest that the content of incorporated boron particles increases with an increasing
amount of boron in the plating bath. The potentiodynamic deposition method is demonstrated to be more suitable for production
of composite coatings with a high content of boron particles than the potentiostatic one. Homogeneous distribution of boron
particles in the nickel matrix without coagulation or sedimentation was associated with the electrochemical fabrication method
in stirred heterogeneous systems. 相似文献