Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2004 2
2009 2
2010 3
2011 3
2012 3
2013 6
2014 2
2015 1
2016 4
2017 2
2018 3
2019 2
2020 3
2021 1
2023 0

Text availability

Article attribute

Article type

Publication date

Search Results

31 results

Results by year

Filters applied: . Clear all
Page 1
Estimating Ixodes ricinus densities on the landscape scale.
Boehnke D, Brugger K, Pfäffle M, Sebastian P, Norra S, Petney T, Oehme R, Littwin N, Lebl K, Raith J, Walter M, Gebhardt R, Rubel F. Boehnke D, et al. Among authors: norra s. Int J Health Geogr. 2015 Aug 14;14:23. doi: 10.1186/s12942-015-0015-7. Int J Health Geogr. 2015. PMID: 26272596 Free PMC article.
Since 2015 the SinoGerman research project SIGN supports water quality improvement in the Taihu region, China.
Schmidt KR, der Beek TA, Dai X, Dong B, Dopp E, Eichinger F, Hammers-Wirtz M, Haußmann R, Holbach A, Hollert H, Illgen M, Jiang X, Koehler J, Koester S, Korth A, Kueppers S, Li A, Lohmann M, Moldaenke C, Norra S, Qin B, Qin Y, Reese M, Riehle E, Santiago-Schuebel B, Schaefer C, Simon A, Song Y, Staaks C, Steinhardt J, Subklew G, Tao T, Wu T, Yin D, Zhao F, Zheng B, Zhou M, Zou H, Zuo J, Tiehm A. Schmidt KR, et al. Among authors: norra s. Environ Sci Eur. 2016;28(1):24. doi: 10.1186/s12302-016-0092-7. Epub 2016 Oct 27. Environ Sci Eur. 2016. PMID: 27840787 Free PMC article.
31 results