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71.
The efficiency of several noble metals for catalytic wet oxidation (CWO) of various pollutants has been demonstrated[1,2]. However, the noble metals are expensive, affecting greatly the economics of the corresponding process. 相似文献
72.
IntroductionAsmorcandmorcuscsarcfoundinindustn'andci\'ilIifc\"ithdimcth\Icthcr(D\1l:).tllccompoundisrccci\'ingmorcattc11tiontl1anc\'CrBcsidcsthccol1\'c11tiol1al\\a\ofproduclngDMEb}'dch\'drationofmctllanoI*tI1cproccssofdlrccts}'nthcslzlngDMEfrol11s}'llthcsisgas(s}'ngas)\\asproposcda11dl1asbccnstudicdfort\"c11t}}'carsl1lTopsoccombincdthlstcchnlqtlc\\'lththcproccssofDMEcon\'CrslontofucIlnthcirpiIotplantandconcIudcdthath1c\\I1olcproccss\\ouldbc11lorccfficicnti11cconom\'tl1a11son1cothcrtccI… 相似文献
73.
Wenrou Tian Prof. Najun Li Prof. Dongyun Chen Prof. Qingfeng Xu Prof. Hua Li Prof. Chenglin Yan Prof. Jianmei Lu 《Angewandte Chemie (International ed. in English)》2023,62(33):e202306964
Converting CO2 into high-value C2 chemicals such as acetate with high selectivity and efficiency is a critical issue in renewable energy storage. Herein, for the first time we present a vibration-driven piezocatalysis with tin(II) monosulfide (SnS) nanobelts for conversion of CO2 to acetate with 100 % selectivity, and the highest production rate (2.21 mM h−1) compared with reported catalysts. Mechanism analysis reveal that the polarized charges triggered by periodic mechanical vibration promote the adsorption and activation of CO2. The electron transfer can be facilitated due to built-in electric field, decreased band gap and work function of SnS under stress. Remarkably, reduced distance between active sites leads to charge enrichment on Sn sites, promoting the C−C coupling, reducing the energy barriers of the rate determining step. It puts forward a bran-new strategy for converting CO2 into high-value C2 products with efficient, low-cost and environment-friendly piezocatalysis utilizing mechanical energy. 相似文献
74.
利用扩展齐次平衡法,求出了Burgers方程无穷多个单孤子解和无穷多个有理函数解,特别是得到了Hopf-Cole’s变换和方程初始值问题解的封闭形式.方法简单直接,并且可以推广到其它方程. 相似文献
75.
76.
Chenglin Hu Huihua Yi Haisheng Fang Bin Yang Yaochun Yao Wenhui Ma Yongnian Dai 《Electrochemistry communications》2010,12(12):1784-1787
LiMnPO4, LiMn0.9Fe0.1PO4 and LiMn0.9Fe0.05Mg0.05PO4 were synthesized by a solid-state reaction route. All samples are single phase with a similar morphology, but the cation substitution results in a crystal lattice shrink because of the smaller ionic radii of Mg2+ and Fe2+. The Fe and Mg co-substitution leads to a significantly increased reversible capacity due to the enhanced electrochemical kinetics. The LiMn0.9Fe0.05Mg0.05PO4 sample exhibits a high capacity, a good cyclability and an excellent rate capability. 相似文献
77.
Self-assembled polymeric micelles can be used as efficient particulate emulsifiers. To explore the relationship between micellar structure and emulsification performance, pH- and temperature-responsive self-assembled micelles were prepared and used as emulsifiers, based on a novel grafted polymer poly(styrene-alt-maleic acid)-graft-poly(N-isopropyl acrylamide) (PSMA-g-PNIPAm). Structure of PSMA-g-PNIPAm micelles varies in response to pH and temperature changes and can be classified into four typical states, including shrunken, moderately swollen, extremely swollen, and inverted states, confirmed by a combination of electrophoresis, dynamic light scattering (DLS), transmission electron microscopy (TEM), and (1)H NMR. This structural variation plays a key role in the emulsification performance of PSMA-g-PNIPAm micelles, according to the emulsifying characteristics of the four typical PSMA-g-PNIPAm micelles as well as the micellar morphologies on the surface of oil droplets as observed by SEM. Emulsions stabilised by micelles with moderately swollen structure are especially stable compared with either the shrunken micelles or the extremely swollen micelles, because the moderately swollen micelles combine the advantages of solid particulate emulsifiers and polymeric surfactants. 相似文献
78.
Ferrocenyl-doped silica nanoparticles as an immobilized affinity support for electrochemical immunoassay of cancer antigen 15-3 总被引:1,自引:0,他引:1
The aim of this study is to elaborate a simple and sensitive electrochemical immunoassay using ferrocenecarboxylic (Fc-COOH)-doped silica nanoparticles (SNPs) as an immobilized affinity support for cancer antigen 15-3 (CA 15-3) detection. The Fc-COOH-doped SNPs with redox-active were prepared by using a water-in-oil microemulsion method. The use of colloidal silica could prevent the leakage of Fc-COOH and were easily modified with trialkoxysilane reagents for covalent conjugation of CA 15-3 antibodies (anti-CA 15-3). The Fc-COOH-doped SNPs were characterized by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The fabrication process of the electrochemical immunosensor was demonstrated by using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. Under optimal conditions, the developed immunosensor showed good linearity at the studied concentration range of 2.0-240 U mL−1 with a coefficient 0.9986 and a detection limit of 0.64 U mL−1 at S/N = 3. 相似文献
79.
This paper is concerned with a cross‐diffusion system arising in a Leslie predator–prey population model in a bounded domain with no flux boundary condition. We investigate sufficient condition for the existence and the non‐existence of non‐constant positive solution. We obtain that if natural diffusion coefficient of predator is large enough and cross‐diffusion coefficients are fixed, then under some conditions there exists non‐constant positive solution. Furthermore, we show that if natural diffusion coefficients of predator and prey are both large enough, and cross‐diffusion coefficients are small enough, then there exists no non‐constant positive solution. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
80.