Results 91 to 100 of about 1,071,828 (189)

Nitrogen loss assessment and environmental consequences in the loess soil of China [PDF]

, 2003
Attention is focused on fertilizer nitrogen loss and the environmental consequences in Shaanxi Province in loess region of China, including N losses to the atmosphere via ammonia volatilization, nitrification and denitrification, N losses to groundwater ...
Tong, Yanan
core  

Nitrogen 15 abundance in protein fractions of beans fertilized with (15NH4)2SO4

Scientia Agricola, 2002
Studies evaluating the protein nutritive value of beans labelled with 15N, ussing nitrogen balance and the quantitation of faecal and urinary endogenous nitrogen, determined by isotopic dilution, have been extensively used. The objective of this research
Chaud Saula Goulart, Oliveira Admar Costa de, Trivelin Paulo César Ocheuze   +2 more
doaj  

Temperature-driven nitrogen mixotrophy shapes marine cyanobacteria Prochlorococcus and Synechococcus latitudinal distribution pattern

Communications Earth & Environment
Temperature, photosynthetically active radiation, and nutrient availability are pivotal in determining the global distribution of marine cyanobacteria. This study demonstrates that the distinct latitudinal niches of Synechococcus and Prochlorococcus are ...
Buce Hetharua, Min Xu, Shan Sun, Kaidian Zhang, Huidan Yang, Hongbing Liu, Shuh-Ji Kao   +6 more
doaj   +1 more source

Fundamentals of organic agriculture [PDF]

, 2008
Organic agriculture can be traced back to the early 20th century, initiated by the Austrian spiritual philosopher Rudolf Steiner. It was later diversified by a number of key people, and more recent versions are guided by principles issued by the ...
Andrén, Olof, Bergström, Lars, Eriksson, Lars-Olov, Gerzabek, Martin, Kirchmann, Holger, Thorvaldsson, Gudni, Winninge, Mikael   +6 more
core  

The Effect of Soil Microbial Residues-Mediated Nitrogen Conservation and Supply during the Growing Season on Nitrogen Uptake by Wheat

Agronomy
Microbial residue nitrogen can indicate soil quality and is crucial for soil nitrogen retention and supply. However, it is still unclear how the dynamic changes in soil microbial residue nitrogen affect crop nitrogen uptake in agricultural practice ...
Jian Han, Li Xing, Chuang Zhang, Jundi Li, Yannan Li, Yuming Zhang, Hongbo He, Chunsheng Hu, Xiaoxin Li, Lijuan Zhang, Wenxu Dong, Shuping Qin, Xiuping Liu   +12 more
doaj   +1 more source

Direct Hyperpolarization of Nitrogen-15 in Aqueous Media with Parahydrogen in Reversible Exchange. [PDF]

J Am Chem Soc, 2017
Colell JFP, Emondts M, Logan AWJ, Shen K, Bae J, Shchepin RV, Ortiz GX, Spannring P, Wang Q, Malcolmson SJ, Chekmenev EY, Feiters MC, Rutjes FPJT, Blümich B, Theis T, Warren WS.   +15 more
europepmc   +1 more source

Generalizing, Extending, and Maximizing Nitrogen-15 Hyperpolarization Induced by Parahydrogen in Reversible Exchange. [PDF]

J Phys Chem C Nanomater Interfaces, 2017
Colell JF, Logan AW, Zhou Z, Shchepin RV, Barskiy DA, Ortiz GX, Wang Q, Malcolmson SJ, Chekmenev EY, Warren WS, Theis T.   +10 more
europepmc   +1 more source

Microtesla SABRE enables 10% nitrogen-15 nuclear spin polarization. [PDF]

J Am Chem Soc, 2015
Theis T, Truong ML, Coffey AM, Shchepin RV, Waddell KW, Shi F, Goodson BM, Warren WS, Chekmenev EY.   +8 more
europepmc   +1 more source

Bias due to isotopic incorporation in both relative and absolute protein quantitation with carbon-13 and nitrogen-15 labeled peptides. [PDF]

Clin Mass Spectrom, 2017
Rappold BA, Hoofnagle AN.
europepmc   +1 more source

Metal catalyzed rearrangement of a 2,2'-bipyridine Schiff-base ligand to a quaterpyridine-type complex [PDF]

, 2007
Champouret, Connor, Constable, Coronado, Dell'Amico, France, Fukuzumi, Helen Stoeckli-Evans, Jian Wang, Joan C. Halfpenny, John D. Wallis, Mahrwald, Melanie Pilkington, Padhi, Pilkington, Pilkington, Rice, Stuart Onions, Wang, Wang, Yang, Zang   +21 more
core   +1 more source