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Monitoring spatial and temporal chemical status of water bodies is crucial to assist environmental policy, identify the chemical fingerprints, and further reduce the source orientated pollutants. Elbe River is one of the major rivers affected by anthropogenic activities in vicinity countries. This study assessed the spatiotemporal changes in response to source shift of Cd, Cu, Ni, Pb, and Zn in the suspended particulate matter (SPM) at upstream, midstream, and downstream of the Elbe River reach in Saxony state, Germany. The average contents of trace metals in SPM was found in the order of Zn (676 mg/kg) » Pb (79 mg/kg) > Cu (74 mg/kg) > Ni (48 mg/kg) » Cd (3.2 mg/kg). According to the Mann-Kendall trend test, Cd, Cu, Pb, and Zn showed significant declines over 1998-2016. The results of source apportionment indicate industrial, urban, natural, and historical mining sources influencing the metal contents in the Elbe River of Saxony. The contributions of industrial and urban pollution decreased by 58.2% from 1998 to 2007 to 2008-2016. The contribution of the natural source was steady over the last two decades., (Copyright © 2019 Elsevier Ltd. All rights reserved.)

MINI: The time trend for the number of minimally invasive spine surgery articles showed a significant increase over time with an average of 93.23 articles per year. Among all related journals, Spine published the largest number of articles in minimally invasive spine surgery research and was the most popular one in the top five countries., Study Design: Bibliometric analysis., Objective: This study aimed to reveal the characteristics of world productivity in the field of minimally invasive spine surgery (MISS) research and to provide a general picture for surgeons and researchers., Summary of Background Data: Significant growth has been observed in the field of MISS research in recent years. However, bibliometric studies concerning the quantity and quality of articles published in MISS journals are scarce., Methods: All the data concerning MISS in this study originate from the Web of Science (Thomson Reuters, New York, NY) without restrictions. All selected literates were evaluated in the following aspects: publication year, publication journals, author, times cited, Web of Science category, countries/territories., Results: A total number of 2051 articles were published worldwide. The articles published during 2000 to 2015 are more than 11.28 times when compared to those published before 2000. The United States published the largest number of articles (855/2051, 41.7%), followed by Germany (245/2051, 11.9%), South Korea (160/2051, 7.8%), China (147/2051, 7.2%), and Japan (108/2051, 5.2%) and had the highest total citations (16,626). Additionally, the United States had the highest average citations per article (12.14), followed by Japan (11.98), Germany (11.19), South Korea (11.04), and China (10.95). High-income countries published 98.73% of articles, upper-middle-income countries published 0.24% of articles, and middle-income countries published 1.03% of articles., Conclusion: The time trend for the number of MISS articles showed a significant increase over time with an average of 93.23 articles per year. The United States was the most productive country and had the highest average citations per article. Among related journals, Spine published the largest number of articles in MISS research and was the most popular one in the top five countries., Level of Evidence: 5.