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.

Https

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

Filters

My NCBI Filters

Results by year

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

Year Number of Results
2002 3
2003 2
2004 1
2005 5
2006 5
2007 10
2008 9
2009 4
2010 8
2011 14
2012 18
2013 18
2014 22
2015 24
2016 24
2017 29
2018 29
2019 33
2020 31
2021 31
2022 22
2023 36
2024 25

Text availability

Article attribute

Article type

Publication date

Search Results

347 results

Results by year

Filters applied: . Clear all
Page 1
Biochar-related studies from 1999 to 2018: a bibliometrics-based review.
Li D, Zhao R, Peng X, Ma Z, Zhao Y, Gong T, Sun M, Jiao Y, Yang T, Xi B. Li D, et al. Among authors: xi b. Environ Sci Pollut Res Int. 2020 Jan;27(3):2898-2908. doi: 10.1007/s11356-019-06870-9. Epub 2019 Dec 14. Environ Sci Pollut Res Int. 2020. PMID: 31838673 Review.
347 results