全文获取类型
收费全文 | 377篇 |
免费 | 5篇 |
国内免费 | 4篇 |
专业分类
电工技术 | 6篇 |
综合类 | 9篇 |
化学工业 | 16篇 |
金属工艺 | 8篇 |
机械仪表 | 4篇 |
建筑科学 | 208篇 |
矿业工程 | 4篇 |
能源动力 | 60篇 |
轻工业 | 7篇 |
水利工程 | 8篇 |
石油天然气 | 6篇 |
无线电 | 12篇 |
一般工业技术 | 18篇 |
冶金工业 | 3篇 |
原子能技术 | 1篇 |
自动化技术 | 16篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 7篇 |
2020年 | 2篇 |
2019年 | 15篇 |
2018年 | 11篇 |
2017年 | 13篇 |
2016年 | 14篇 |
2015年 | 11篇 |
2014年 | 28篇 |
2013年 | 49篇 |
2012年 | 18篇 |
2011年 | 14篇 |
2010年 | 14篇 |
2009年 | 13篇 |
2008年 | 20篇 |
2007年 | 15篇 |
2006年 | 18篇 |
2005年 | 10篇 |
2004年 | 8篇 |
2003年 | 11篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1999年 | 4篇 |
1998年 | 1篇 |
1996年 | 10篇 |
1995年 | 7篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1985年 | 9篇 |
1984年 | 11篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1980年 | 1篇 |
排序方式: 共有386条查询结果,搜索用时 10 毫秒
1.
Gerald Leach 《Energy Policy》1991,19(10):918-925
The UK differs from may other industrialized nations in that its carbon dioxide (CO2) emissions from energy use have declined in recent years despite relatively rapid economic growth. In all sectors but transport, substantial reductions have already occurred in the level of carbon emissions per unit of GDP output. At the same time, a number of official and unofficial studies have pointed out that the UK has one of the largest remaining potentials amongst comparable industrialized countries for achieving further CO2 reductions through the implementation of cost-effective energy efficiency and fuel switching measures. This paper discusses past and present patterns of energy use and carbons emissions in the UK. The analysis then examines historical trends in UK energy policy and presents policy options for further reducing the UK's energy-use and carbon emissions in the future. 相似文献
2.
Susan Owens 《Energy Policy》1985,13(6):546-558
During the latter half of the 19ar 1970s there was great concern about potential conflicts over energy development proposals in the UK, most of which were expected to emerge within the framework of land use planning procedures and the associated opportunities for public participation. While there has been widespread dissatisfaction with the way in which the planning system handles energy developments, there is little consensus about the nature of the problem or about possible solutions to it. Greatly reduced energy forecasts allow a pause for reflection, but it is argued that there is no room for complacency about conflict over energy developments in future. 相似文献
3.
Luisa Siculella Laura Giannotti Benedetta Di Chiara Stanca Matteo Calcagnile Alessio Rochira Eleonora Stanca Pietro Alifano Fabrizio Damiano 《International journal of molecular sciences》2021,22(8)
Reactive intermediate deaminase (Rid) proteins are enzymes conserved in all domains of life. UK114, a mammalian member of RidA subfamily, has been firstly identified as a component of liver perchloric acid-soluble proteins (L-PSP). Although still poorly defined, several functions have been attributed to the mammalian protein UK114/RIDA, including the reactive intermediate deamination activity. The expression of UK114/RIDA has been observed in some tumors, arousing interest in this protein as an evaluable tumor marker. However, other studies reported a negative correlation between UK114/RIDA expression, tumor differentiation degree and cell proliferation. This work addressed the question of UK114/RIDA expression in human non-tumor HEK293 cell lines and in some human tumor cell lines. Here we reported that human RIDA (hRIDA) was expressed in all the analyzed cell line and subjected to lysine (K-)succinylation. In HEK293, hRIDA K-succinylation was negatively correlated to the cell proliferation rate and was under the control of SIRT5. Moreover, K-succinylation clearly altered hRIDA quantification by immunoblotting, explaining, at least in part, some discrepancies about RIDA expression reported in previous studies. We found that hRIDA was able to deaminate reactive enamine-imine intermediates and that K-succinylation drastically reduced deaminase activity. As predicted by in silico analysis, the observed reduction of deaminase activity has been related to the drastic alterations of hRIDA structure inferred by K-succinylation. The role of hRIDA and the importance of its K-succinylation in cell metabolism, especially in cancer biology, have been discussed. 相似文献
4.
This paper provides an evaluation of the Scottish freedom of information regime in the modern denationalised environment. The authors conducted a pragmatic investigation by means of a real-world compliance inquiry which involved, among other things, the electronic submission of standardised requests for information to those local authority arm's-length external organisations which find themselves now subject to the provisions of the Freedom of Information (Scotland) Act 2002. A compliance matrix, with several response measures, recorded the progression and outcome of the requests sent to each named ‘public authority’. The article is also furnished with a contextual overview of the interaction between the home nation FOI regimes and private enterprise with a nod to contemporaneous events. In turn, the paper reveals several quagmires for the operational practicality of FOI in the privatised arena: a pronounced reminder of the difficulties associated with maintaining a functioning and practical FOI regime in light of a myriad of public service delivery models in the denationalised epoch. 相似文献
5.
This paper examines the dynamics of entrepreneurial acquisitions undertaken by UK high growth small and medium enterprises (SMEs). While entrepreneurial acquisitions are increasingly deployed by SMEs, little is known about their antecedents, motivational drivers and organisational outcomes. Drawing on detailed case study evidence from Scotland, the key factor found to be driving these acquisitions was the desire to augment and exploit technological complementarities between the acquiring and acquired firms. Acquisition can therefore be conceptualised as an advanced stage of the outside-in ‘open innovation’ strategies proactively used within these innovative SMEs. Firms executing this strategy typically have an acute propensity for risk, a desire for close customer engagement, effective business models and strong external orientation. The work suggests that greater attention should be paid within M&A theory to the dynamics of these types of smaller scale entrepreneurial acquisitions. 相似文献
6.
Shiu-Fai Wong 《Industry and innovation》2005,12(1):117-145
This paper firstly examines the relationship between state coordination and wind energy growth by comparing the differences between UK and German institutional configurations and state involvements in the 1990s. While the EU was calling for a unified regulatory framework for its member states, the UK and Germany adopted very different renewable energy policies. The evidence of the early 1990s shows that the British government employed “deregulation” with so limited state involvement that wind energy project developers faced thorny development problems, while the German government tried to require the electricity supply industry to purchase expensive wind power by “regulation” but encountered formidable resistance. Nevertheless, both the British and German administrations later could resolve these problems through new forms of state power. This suggests that, firstly, neither “deregulation” nor “regulation” is an effective means to develop wind power with increasing electricity liberalization and regionalization. Secondly, “obliging” regulations and state powers are vital to the policy outcome by harnessing the state's institutional capacity to smooth out technology innovation and diffusion. 相似文献
7.
8.
本文遴选2006-2010年中英两国主流报纸对麻疹疫苗和MMR的新闻报道样本,采用内容分析方法以“科学的确定性与不确定”和“政府政策意见趋向”为主线分析了不同媒体环境下针对防治麻疹病疫苗的科学报道模式。通过比较研究中西方不同国家的政府、媒体以及科学家如何针对麻疹疫苗争议对公众进行正确健康疏导以及危机处理方式,拓展了科学普及的研究视野并试图从中总结出更加合理的科技报道模式。科学争议以及危机处理需要科学界与媒体正确的引导,随着网络科技报道数量的增加,传统媒体需要重视其他渠道的科技信息,尤其是来自于科学界的信息,从而对原有科技报道模式做出调整和改善。 相似文献
9.
There has recently been a concerted effort to commence a transition to fuel cell vehicles (FCVs) in Europe. A coalition of companies released an influential McKinsey-coordinated report in 2010, which concluded that FCVs are ready for commercial deployment. Public–private H2Mobility programmes have subsequently been established across Europe to develop business cases for the introduction of FCVs. In this paper, we examine the conclusions of these studies from an energy systems perspective, using the UK as a case study. Other UK energy system studies have identified only a minor role for FCVs, after 2030, but we reconcile these views by showing that the differences are primarily driven by different data assumptions rather than methodological differences. Some energy system models do not start a transition to FCVs until around 2040 as they do not account for the time normally taken for the diffusion of new powertrains. We show that applying dynamic growth constraints to the UK MARKAL energy system model more realistically represents insights from innovation theory. We conclude that the optimum deployment of FCVs, from an energy systems perspective, is broadly in line with the roadmap developed by UK H2Mobility and that a transition needs to commence soon if FCVs are to become widespread by 2050. 相似文献
10.
This article analyzes the possibilities of applying Continuous Improvement principles to the management and maintenance of academic library websites. Current practice is mapped onto Continuous Improvement principles, with evidence distilled from a United Kingdom national survey of academic library web practitioners. The survey data informs a website organizational framework and operational model. The framework describes the setting within which library websites are managed, while the model focuses on library specific aspects to the management and development of their site. 相似文献