The Canadian working group on expanding clean energy R&D collaboration is currently reviewing existing Canada-U.S. partnerships in order to identify prospective areas for long-term clean energy R&D collaborative initiatives as part of the framework mandated by the Clean Energy Dialogue Action Plan. The present scientometric study represents one of the sources this working group will draw on to develop a more robust understanding of the scientific production and collaborative landscape in the field of clean energy R&D and in three subfields of interest: future generation biofuels, clean energy vehicles and green buildings.
This scientometric study found that the scientific output in clean energy R&D and its three subfields increased dramatically during the 2005–2009 period, internationally, in the U.S. and in Canada. Both these countries are among the 15 leading countries in clean energy R&D, with the U.S. being the largest producer in the field overall and in the three subfields. Indicators of scientific impact, quality and specialization suggest that the strengths of leading countries vary across the subfields, but overall in clean energy R&D, Sweden and Turkey stand out as having levels of impact and specialization that are above the world level. Canada, Germany, the Netherlands, the U.S. and the U.K. all rank above the world average in impact but are not particularly specialized in this field. Note that the small number of publications in green buildings research limited the conclusions that could be drawn from the data for this subfield.
In terms of collaboration patterns, the analysis shows that, in over 60% of cases, the countries examined are collaborating less than expected by chance with their leading counterparts. In clean energy R&D and in the three subfields, Canada’s strongest affinities are generally with the U.S., Turkey and China. Overall, with a few exceptions, papers published collaboratively with other countries are, on average, more highly cited than non-collaborative papers. In fact, this is the case for Canada in clean energy R&D overall.
In addition to the data presented at the country level, leading U.S. and Canadian institutions in these research areas were identified, as were those most active in terms of Canada/U.S. cross-border collaborations. The analysis of Canada/U.S. collaboration patterns at the institution level indicates that Canadian institutions tend to collaborate more with U.S. institutions
than U.S. institutions do with Canadian organizations; this is actually not surprising given the relative size of organizations in these countries.

This paper focuses on related research of ADS. ADS research were analyzed based on research paper from Web of knowledge. Distribution characteristics of time, topics, countries, and affiliations, international cooperation and hot fields were analyzed. Results showed that research on ADS was increasingly active from the year 2000, and American, Japan, Germany, France and Russia were leading countries in the world. India, as an emerging country, has already some international influence. Stability of the accelerator, ADS related materials chemistry and prediction and simulation by advanced computing equipment was the cutting-edge scientific issues currently.

The convening of the UN Climate Conference in Copenhagen placed the global warming and other environmental issues in front of the world once again. The low-carbon technology competition will determine the climate change patterns and direction in the future. In this paper, patent analysis was carried out in nine subfields of low-carbon technologies. It will provide certain references and supports to the research and development of low carbon industry.