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本文在C-O-H体系流体相平衡基础上,利用现有的热力学数据和新的p-V-T资料,在pT=∑pi假定下,计算了高温、高压条件下流体相组成。结果表明,该体系主要存在五种流体相,在不同温压条件下各流体相所占比例不同。在相对较低的温、压条件下,CH4是体系中占主要的流体相(约占70%),且随温、压和氧逸度的升高,它所占比例却明显降低,所获结果为探讨无机成因天然气形成的可能性、存在的量比和稳定存在的物理化学条件提供了充分的理论依据。 相似文献
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正1 Introduction With the industrial development of lithium battery,nuclear and aerospace industry,the demands of metal lithium and its compounds are increasing significantly.Lithium is called as the energy of the metal in the new century(Zhang et al.2001).The total reserve of lithium resources around the world7 相似文献
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We inquire the phenomena of clustering of galaxies in an expanding universe from a theoretical point of view on the basis
of thermodynamics and correlation functions. The partial differential equation is developed both for the point mass and extended
mass structures of a two-point correlation function by using thermodynamic equations in combination with the equation of state
taking gravitational interaction between particles into consideration. The unique solution physically satisfies a set of boundary
conditions for correlated systems and provides a new insight into the gravitational clustering problem. 相似文献
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The Solubility of Sulphur in Hydrous Rhyolitic Melts 总被引:1,自引:1,他引:1
Experiments performed at 2 kbar, in the temperature range 8001000°C,with fO2 between NNO2·3 and NNO+2·9 (whereNNO is the nickelnickel oxide buffer), and varying amountsof sulphur added to hydrous metaluminous rhyolite bulk compositions,were used to constrain the solubility of sulphur in rhyolitemelts. The results show that fS2 exerts a dominant control onthe sulphur solubility in hydrous silicate melts and that, dependingon fO2, a rhyolitic melt can reach sulphur contents close to1000 ppm at high fS2. At fO2 below NNO+1, the addition of ironto a sulphur-bearing rhyolite magma produces massive crystallizationof pyrrhotite and does not enhance the sulphur solubility ofthe melt. For a given fO2, the melt-sulphur-content increaseswith fS2. For fixed fO2 and fS2, temperature exerts a positivecontrol on sulphur solubilities, at least for fO2 below NNO+1.The mole fraction of dissolved sulphur exhibits essentiallylinear dependence on fH2S at low fO2 and, although the experimentalevidence is less clear, on fSO2 at high fO2. The minimum insulphur solubility corresponds to the redox range where bothfH2S and fSO2 are approximately equal. A thermodynamic modelof sulphur solubility in hydrous rhyolite melts is derived assumingthat total dissolved sulphur results from the additive effectsof H2S and SO2 dissolution reactions. The model reproduces wellthe minimum of sulphur solubility at around NNO+1, in additionto the variation of the sulphide to sulphate ratio with fO2.A simple empirical model of sulphur solubility in rhyoliticmelts is derived, and shows good correspondence between modeland observations for high-silica rhyolites. KEY WORDS: sulphur; solubility; rhyolite; thermodynamics; fO2; fS2 相似文献
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On the basis of an experimental study and thermodynamic calculation, the mechanisms of paragenesis and separation of silver, lead and zinc in the hydrothermal system have been studied. At acidic to nearly neutral pH, their chloride complexes are stable, and among them the chloride complexes of zinc are most stable. And the sulfide complexes are the dominant species at nearly neutral to alkaline pH,while the sulfide complexes of silver are most stable. With decreasing temperature, [ Cl^-] ,fO2, and increasing pH, the solubilities of silver, lead and zinc will decrease, leading to their deposition and separation. For sulfide complexes, the concentrations of reduced sulfur and pH are two important factors affecting their stabilities. Complexes of different forms and stabilities respond to the variation of conditions to different extents, which gave rise to the paragenesis and separation of silver, lead and zinc in the whole ore-forming process of dissolution, transport and deposition. 相似文献
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魏益焕 《海洋学报(英文版)》2010,29(9)
We calculate the local energy and the energy density of the Reisner--Norstrõm--anti-de-Sitter black hole, study the first law of thermodynamics and show the Smarr formula for the Born--Infeld--anti-de-Sitter black hole. Applying the first law of thermodynamics to the black hole region, we analyse the three energy exchange processes between the black hole region and the outer and the inner regions. 相似文献