bims-librar 2018-04-15 papers

Issue of 2018–04–15
two papers selected by
Thomas Krichel, Open Library Society

Eur Addict Res. 2018 Apr 06. 24(2): 60-70

Global Scientific Production on Illicit Drug Addiction: A Two-Decade Analysis.

Malahat Khalili, Afarin Rahimi-Movaghar, Behrang Shadloo, Ramin Mojtabai, Karl Mann, Masoumeh Amin-Esmaeili.

AIMS: Addiction science has made great progress in the past decades. We conducted a scientometric study in order to quantify the number of publications and the growth rate globally, regionally, and at country levels.
METHODS: In October 2015, we searched the Scopus database using the general keywords of addiction or drug-use disorders combined with specific terms regarding 4 groups of illicit drugs - cannabis, opioids, cocaine, and other stimulants or hallucinogens. All documents published during the 20-year period from 1995 to 2014 were included.
RESULTS: A total of 95,398 documents were retrieved. The highest number of documents were on opioids, both globally (60.1%) and in each of 5 continents. However, studies on cannabis showed a higher growth rate in the last 5-year period of the study (2010-2014). The United States, the United Kingdom, Germany, Canada, Australia, France, Spain, Italy, China, and Japan - almost all studies were from high-income countries - occupied the top 10 positions and produced 81.4% of the global science on drug addiction.
CONCLUSION: As there are important socio-cultural differences in the epidemiology and optimal clinical care of addictive disorders, it is suggested that low- and more affected middle-income countries increase their capacity to conduct research and disseminate the knowledge in this field.

Keywords: Bibliometrics; Drug dependence; Geographic mapping; Scientometry; Substance abuse; World

DOI: https://doi.org/10.1159/000487590

J Environ Sci (China). 2018 Apr;pii: S1001-0742(17)31271-8. [Epub ahead of print]66 274-285

A bibliometric review of nitrogen research in eutrophic lakes and reservoirs.

Xiaolong Yao, Yunlin Zhang, Lu Zhang, Yongqiang Zhou.

The global application of nitrogen is far greater than phosphorus, and it is widely involved in the eutrophication of lakes and reservoirs. We used a bibliometric method to quantitatively and qualitatively evaluate nitrogen research in eutrophic lakes and reservoirs to reveal research developments, current research hotspots, and emerging trends in this area. A total of 2695 articles in the past 25years from the online database of the Scientific Citation Index Expended (SCI-Expanded) were analyzed. Articles in this area increased exponentially from 1991 to 2015. Although the USA was the most productive country over the past 25years, China achieved the top position in terms of yearly publications after 2010. The most active keywords related to nitrogen in the past 25years included phosphorus, nutrients, sediment, chlorophyll-a, carbon, phytoplankton, cyanobacteria, water quality, modeling, and stable isotopes, based on analysis within 5-year intervals from 1991 to 2015 as well as the entire past 25years. In addition, researchers have drawn increasing attention to denitrification, climate change, and internal loading. Future trends in this area should focus on: (1) nutrient amounts, ratios, and major nitrogen sources leading to eutrophication; (2) nitrogen transformation and the bioavailability of different nitrogen forms; (3) nitrogen budget, mass balance model, control, and management; (4) ecosystem responses to nitrogen enrichment and reduction, as well as the relationships between these responses; and (5) interactions between nitrogen and other stressors (e.g., light intensity, carbon, phosphorus, toxic contaminants, climate change, and hydrological variations) in terms of eutrophication.

Keywords: Bibliometric; Eutrophication; Nitrogen; Research hotspots; Trends

DOI: https://doi.org/10.1016/j.jes.2016.10.022