Results 301 to 310 of about 11,656,595 (311)

Urinary urea nitrogen vs. total urine nitrogen

Burns, 1992
openaire   +1 more source

Effects of tillage systems on soil organic carbon and total nitrogen in a double paddy cropping system in Southern China

, 2015
J. Xue, Chao Pu, Shengli Liu, Zhong-du Chen, Fu Chen, Xiao-ping Xiao, R. Lal, Hailin Zhang   +7 more
semanticscholar   +1 more source

Year-round warming and autumnal clipping lead to downward transport of root biomass, carbon and total nitrogen in soil of an alpine meadow

, 2015
Man-hou Xu, F. Peng, Q. You, Jian Guo, Xia-Fei Tian, X. Xue, Min Liu   +6 more
semanticscholar   +1 more source

Determination of Total Nitrogen and Phosphorus in Leaf Litter

2005
Flindt, Mogens, Lillebø, A.I.
openaire   +2 more sources

Rational design of metal–organic framework-nanoparticle composite electrocatalysts for sustainable nitrogen electrochemistry

EScience
Xu Yu, Ho Seok Park, Huan Pang
exaly  

[Ultramicromethod for the determination of total nitrogen].

Biulleten' eksperimental'noi biologii i meditsiny, 1998
openaire   +1 more source

Mechanisms of plant species impacts on ecosystem nitrogen cycling

Ecology Letters, 2002
exaly  

Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography

2016
openaire   +1 more source

The significance of trends in concentrations of total nitrogen and nitrogenous compounds

1999
GIANQUINTO G., BONA, STEFANO
openaire   +1 more source

Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography

openaire   +1 more source