Results 61 to 70 of about 10,402 (168)
本文从可再生能源利用的动因及目的等方面出发,阐释了可再生能源法律概念的应有之义,提出了可再生能源的法律概念。This article from renewable energy source aspects and so on use's agent and goal embarked, explains the renewable energy source legal concept to have righteousness, put forward the renewable energy ...
马青
core
The governance of urban energy transitions: A comparative study of solar water heating systems in two Chinese cities [PDF]
This paper examines how urban energy transitions are unfolding in China, in relation to the deployment of solar water heating (SWH) systems in two Chinese cities, Rizhao and Shenzhen.
Boschma +73 more
core +2 more sources
Abstract Green industrial policies aim to create local value from renewable energy (RE) technologies. One policy instrument includes local content requirements (LCR), which prescribe a minimum share of locally manufactured inputs for investments in RE. However, the policy effectiveness of LCR differs.
Laima Eicke
wiley +1 more source
据国际能源机构预测,21世纪中叶世界的能源结构将发生转变,因为传统化石能源储量会越来越少,可再生能源必然会得到迅猛发展并将成为最重要的能源组成部分,太阳能是地球最丰富的可再生能源,而且太阳能的利用是新能源中综合性价比最高,其发展潜力巨大,一旦能够开发和利用好太阳能,就可以获得日常生产、经济生活中所需的取之不尽的可再生能源。
翁钊, 赵爽
doaj
Research on supersaturated titanium doping in monocrystalline silicon realized by continuous wave laser irradiation [PDF]
在能源日益紧缺环境污染日益加剧的形势下,光伏发电以其分布广泛、清洁无污染等优点成为21世纪解决能源危机和环境问题的重要手段。晶体硅太阳电池因具有高的光电转换效率、低污染、性能稳定、技术成熟等优点,是市场的主流产品,在可预见的未来仍然持续占据主导地位。如何进一步提高晶体硅太阳电池的光电转换效率是今后的努力方向。中间带太阳电池作为第三代的新概念太阳电池,通过中间带能吸收原先透过电池的红外光,从而提高光电转换效率。在硅中掺入过渡金属杂质,当掺杂浓度超过Mott极限时,将会在硅的禁带中形成中间能带 ...
范宝殿
core
Orphan crops of archaeology‐based crop history research
Agrobiodiversity is central to sustainable farming worldwide. Cultivation, conservation and reintroduction of diverse plant species, including ‘forgotten’ and ‘underutilized’ crops, contribute to global agrobiodiversity, living ecosystems and sustainable food production.
Daniel Fuks +23 more
wiley +1 more source
Study on Fast Pyrolysis of Chinese Fir for the Production of Bio-oil and Its Process Improvement [PDF]
能源的利用与发展一直是人类关心的重要问题。随着化石能源的日渐枯竭,能源的可持续发展和清洁利用也已成为人类面临的重大难题,因此,寻找可替代传统化石能源的绿色清洁能源迫在眉睫。生物质作为一种低污染、可再生的资源,可通过物理转化、化学转化或生物化学转化途径转化为相应的生物能源,逐渐成为现代能源系统中的重要组成部分。其中,生物质快速热解可以将能量密度较低的生物质直接转化为能量密度较高的生物油,有利于储存和运输,因此,是生物质资源化利用的热门技术之一。 本文以我国广泛分布的杉木为原料 ...
朱沈嘉
core
ABSTRACT The Arab Spring resulted in an expansion of social and individual freedoms in Tunisian society, but it also brought political instability, negatively impacting what had long been the country's primary source of employment—tourism. This economic crisis forced many to improvise their own sources of income, and it was in this context that a new ...
Camila Ponce Lara
wiley +1 more source
Study on the Transformation and Upgrading of Business Mode of Canadian Solar Inc. [PDF]
太阳能作为一种可再生能源,与风电、水电、生物质能等可再生能源相比,具有取之不尽、用之不竭、清洁无污染、无需运输、能量转换环节少等独特优势。在国家相关政策的引导下,全国范围内出现了光伏产业的投资热潮,光伏产品规模迅速扩张,出现了重复建设和产能过剩的风险。与此同时,在欧债危机、美国经济低迷、贸易壁垒逐步加大的整体环境下,对外依存度达90%以上的中国光伏企业不得不面对量价齐跌的局面,原有的单纯部件或主机供应商的商业模式已无法推进企业的可持续发展。 在这样的大背景下,本文以阿特斯公司的商业模式转型升级为研究内容,
沈惠芳
core
An assessment of future rewilding potential in the United Kingdom
Abstract Restoring ecosystems is an imperative for addressing biodiversity loss and climate change, and achieving the targets of the Kunming–Montreal Global Biodiversity Framework. One form of restoration, rewilding, may have particular promise but may also be precluded by requirements for other forms of land use now or in the future.
C. Brown, R. Prestele, M. Rounsevell
wiley +1 more source

