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541.
Body fluid traces recovered at crime scenes are among the most common and important types of forensic evidence. However, the ability to characterize a biological stain at a crime scene nondestructively has not yet been demonstrated. Here, we expand the Raman spectroscopic approach for the identification of dry traces of pure body fluids to address the problem of heterogeneous contamination, which can impair the performance of conventional methods. The concept of multidimensional Raman signatures was utilized for the identification of blood in dry traces contaminated with sand, dust, and soil. Multiple Raman spectra were acquired from the samples via automatic scanning, and the contribution of blood was evaluated through the fitting quality using spectroscopic signature components. The spatial mapping technique allowed for detection of “hot spots” dominated by blood contribution. The proposed method has great potential for blood identification in highly contaminated samples.  相似文献   
542.
Abstract: Crystal violet is a very common dye in ballpoint ink. Recent research suggests that the degradation of triarylmethane dyes gives an indication of the age of a ballpoint pen entry on a document. The main problem for the quantitative evaluation of the degradation is that it is highly dependent on the exposure to light. Moreover additional factors, such as additives and substrate play an important role in this process. The aim of this work is to compare the degradation pathways of the pure dye in water and ethanol upon exposure to xenon light by UV/VIS spectrophotometry and laser desorption ionization. Significant differences have been observed in the products and the kinetics of the degradation. N-demethylation, an expected decomposition process, was found to take place only in aqueous solution and kinetics calculations showed that the degradation occurred 2.5 times faster in ethanol compared to water. The degradation of crystal violet in inks from four ballpoint pens on paper was also studied for entries made over 2–3 years. It was observed that degradation reactions were quenched by the presence of another dye due to competitive absorption. It was also observed that the thickness of a stroke (concentration of ink) influenced the degradation process. In the absence of light only one ballpoint pen showed slight degradation. A better understanding of the influence of the paper, ink composition, and storage conditions is necessary to interpret correctly the age of an ink based on the degradation of dyes.  相似文献   
543.
In the context of the Australian federal system industry development will be influenced by the policies of each sphere of government. When announcing a set of policies in 1997 to develop the renewable energy industry the Australian federal government acknowledged the need for a cooperative approach between all governments and industry. The objective of this article is to analyse the government policies over the 1997–2007 period to promote the development of the renewable energy industry in Australia. The article highlights a number of factors that have served as barriers to the development of the industry. The research provides important insight into the difficulties associated with establishing cooperative national arrangements in areas of state government responsibility in the Australian federation. The lessons also inform the current debate on the policy initiatives needed to more effectively reduce greenhouse gas emissions from stationary energy from the increased availability of renewable energy .  相似文献   
544.
俄罗斯经济的复苏离不开对西伯利亚及远东地区自然资源,尤其是能源资源的开发;中国黑龙江省利用与俄罗斯东部地区的地缘优势和传统经济联系,在能源领域积极开展经济技术合作,必将有利于中俄双方社会经济的发展;为促进能源合作的顺利开展,本文提出了7项具有应用价值的对策与建议。  相似文献   
545.
俄罗斯的石油、天然气、电能非常丰富.而东北亚各国,主要是中国、日本和韩国资源有限.不能满足经济发展的需要。这就为俄罗斯与亚太地区各国。特别是上述3国进行资源合作提供了可能。俄罗斯不仅可以出口石油、天然气、电能、还可以与各国合作开发资源。可以想象。这必然会促进亚太和东北亚地区根本的、长期的国际合作。  相似文献   
546.
日本能源安全的体制保障对中国能源管理体制改革的启示   总被引:2,自引:0,他引:2  
20世纪能源危机时期,日本制定了健全的能源安全保障体制和运行机制。同样,能源安全对我国的可持续发展及国家安全具有战略意义。通过对日本能源安全保障体制以及中国能源管理体制变革的追述和分析,试图为中国能源管理体制改革提供可行性的建议。  相似文献   
547.
《政策研究评论》2018,35(2):238-257
This article examines variation in local‐level energy‐efficiency grants and corresponding initiatives from the American Reinvestment and Recovery Act (ARRA) in the United States. The analysis is based upon a hurdle model of counts of energy‐efficiency grants received by 348 local governments that received these grants from 2009 to 2013, as well as 348 matched local governments that did not receive such funds. City‐level characteristics including amount of federal financial support, per capita income, signaling of preferences for sustainability policies, manufacturing, and political influences are shown to be empirically important determinants of variation in local energy‐efficiency initiatives. The evidence suggests that all else held equal, the $21.8 billion in ARRA funds expended with the intent of increasing local energy‐efficiency programs and policies successfully led to this end.  相似文献   
548.
The governments of Britain, France, and the United States are seeking to promote renewed investment in nuclear power through metagovernance. Metagovernance describes the way governments can leverage state power and resources to shape the behavior of networked actors to advance policy goals. To metagovern, governments use a variety of policy tools but the factors shaping the design of these policy tools remains unclear. Grid‐group cultural theory is used to show that the design of the policy tools used in metagovernance reflects both an underlying cultural bias within government and prevailing institutional circumstances. The paper demonstrates the utility of cultural theory in the study of metagovernance.  相似文献   
549.
This article explores the global social–economic impact of shale gas extraction, comparing the differing social and economic impacts shale gas extraction may have on communities in developed and developing countries. It argues that the benefits of fracking are more likely to be enjoyed by communities in highly and very highly developed countries rather than by those in countries with low or medium levels of development . Additionally, it shows that the potential risks and drawbacks of shale gas and its extraction are more likely to be experienced by communities in these latter countries than by those in highly or very highly developed countries. However, it also demonstrates that even communities in developed countries are vulnerable to environmental and health risks associated with shale gas extraction.  相似文献   
550.
This article examines the potential implications of the United Kingdom's exit from the European Union (so‐called ‘Brexit’) for the success and survival of the country's flagship climate policy, the Climate Change Act 2008. The impact of a ‘soft’ and a ‘hard’ Brexit for the main features of the Climate Change Act are assessed, building on documentary evidence and elite interviews with key policy‐makers and policy‐shapers. The article argues that the long‐term viability of the Climate Change Act was being threatened even before the EU referendum, and that Brexit will do little to improve this situation. Even though the existence of the Climate Change Act is not under immediate threat, a range of issues presented by Brexit risk undermining its successful implementation.  相似文献   
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