Results 231 to 240 of about 11,656,595 (311)

Soil organic carbon and total nitrogen stocks as affected by vegetation types and altitude across the mountainous regions in the Yunnan Province, south-western China

CATENA, 2021
The soil organic carbon (SOC) and nitrogen (N) in the Yunnan Province, southwestern China, is related to the complex topography and multiple vegetation zones.
Yongqiang Zhang, Juanjuan Ai, Qiwu Sun, Zhichao Li, Lingyu Hou, Liguo Song, G. Tang, Li Li, Guodong Shao   +8 more
semanticscholar   +1 more source

Global gross nitrification rates are dominantly driven by soil carbon‐to‐nitrogen stoichiometry and total nitrogen

Global Change Biology, 2021
Soil gross nitrification (GN) is a critical process in the global nitrogen (N) cycle that results in the formation of nitrate through microbial oxidation of ammonium or organic N, and can both increase N availability to plants and nitrous oxide emissions.
A. Elrys, Jing Wang, M. Metwally, Yi Cheng, Jinbo Zhang, Z. Cai, Scott X. Chang, Christoph Müller   +7 more
semanticscholar   +1 more source

Depth of straw incorporation significantly alters crop yield, soil organic carbon and total nitrogen in the North China Plain

, 2021
Appropriate straw incorporation has ample agronomic and environmental benefits in the North China Plain, but most studies are limited to straw mulching or incorporation on the soil surface.
Na Liu, Yuyi Li, C. Ping, Wang Jing, W. Guo, H. Pang, Zhang Li   +6 more
semanticscholar   +1 more source

Highly efficient removal of total nitrogen and dissolved organic compound in waste reverse osmosis concentrate mediated by chlorine radical on 3D Co3O4 nanowires anode.

Journal of Hazardous Materials, 2021
Reverse osmosis concentrate (ROC) from wastewater reclamation has posed significant disposal challenges due to its highly concentrated NH3-N, chloride ion and bio-refractory organics, and developing technologies for their removal are essential.
Yan Zhang, Wenjing Tang, Jing Bai, Jinhua Li, Jiachen Wang, Tingsheng Zhou, Xiaohong Guan, Baoxue Zhou   +7 more
semanticscholar   +1 more source

Operational modifications of a full-scale experimental vertical flow constructed wetland with effluent recirculation to optimize total nitrogen removal

, 2021
A full-scale Vertical Flow Constructed Wetland (VFCW) was designed, built, and put into operation in Oman to provide a sustainable wastewater treatment solution within the Middle Eastern context. The VFCW had two stages (vertical flow 1 and 2; called VF1
B. Al-Wahaibi, Tahereh Jafary, A. Al-Mamun, M. Baawain, M. Aghbashlo, M. Tabatabaei, A. Stefanakis   +6 more
semanticscholar   +1 more source

High-resolution digital mapping of soil organic carbon and soil total nitrogen using DEM derivatives, Sentinel-1 and Sentinel-2 data based on machine learning algorithms.

Science of the Total Environment, 2020
Soil organic carbon (SOC) and soil total nitrogen (STN) are important indicators of soil health and play a key role in the global carbon and nitrogen cycles.
Tao Zhou, Yajun Geng, Jie Chen, J. Pan, D. Haase, A. Lausch   +5 more
semanticscholar   +1 more source

Total volatile basic nitrogen (TVB-N) and its role in meat spoilage: A review

, 2021
Background Meat is a perishable product and during storage, the actions of microorganisms and endogenous enzymes result in chemical compositional changes. Total volatile basic nitrogen (TVB-N) is often used as a biomarker of protein and amine degradation.
A. A. Bekhit, B. Holman, Stephen G. Giteru, D. Hopkins   +3 more
semanticscholar   +1 more source

A possible fractional order derivative and optimized spectral indices for assessing total nitrogen content in cotton

Computers and Electronics in Agriculture, 2020
Nitrogen is the key biochemical component of chlorophyll, protein and enzymes, and it is widely used as an indicator of photosynthesis and plant nutrient levels.
Yierxiati Abulaiti, Mamat Sawut, Baidengsha Maimaitiaili, Chunyue Ma   +3 more
semanticscholar   +1 more source

Total nitrogen in meteorites

Geochimica et Cosmochimica Acta, 1974
Abstract Total N has been measured in a number of meteorites by neutron activation analysis using the reaction N14(n, p)C14. From each meteorite a number of chips have been analysed to investigate the variation of N contents in a sample. Many meteorites are found to contain a heterogeneous distribution of N. Eighteen chondrites, mostly of the classes
B.K Kothari, P.S Goel
openaire   +1 more source

Determination of total nitrogen and cyanide nitrogen in cassava

Journal of the Science of Food and Agriculture, 1988
AbstractHeating of intact cassava leaves causes liberation of hydrogen cyanide. This phenomenon appears to be caused by β‐glucosidase‐catalysed decomposition of the cyanogenic glycosides linamarin and lotaustralin. Because of these losses, many previously determined values for total nitrogen in cassava (and other cyanogenic plants) are probably in ...
Elinor Torres, José F. Pereira, Anita M. Brinker, David S. Seigler   +3 more
openaire   +1 more source