Results 61 to 70 of about 1,071,828 (189)

Influence of shellfish farming activities on nitrification, nitrate reduction to ammonium and denitrification at the water-sediment interface of the Thau lagoon, France [PDF]

open access: yes, 1997
The seasonal patterns of nitrification, denitrification and dissimilatory ammonium production (DAP) rates were studied in the sediment of 2 stations in the Thau lagoon (south of France).
Bianchi, Micheline   +3 more
core   +3 more sources

Penentuan Kebutuhan Pokok Protein Pada Napu (Tragulus napu)

open access: yesJurnal Ilmiah Ilmu-Ilmu Peternakan, 2009
The study aimed to determine the protein requirements for basic life and growth on Napu. Four Napus with an average 3.2 kg body weight were used in this study. 4 X 4 Latin square design was used in this research.
Abdul Latief
doaj   +3 more sources

Bioremediation of contaminated soil : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Environmental Engineering at Massey University [PDF]

open access: yes, 1997
The release of contaminants into the environment is inevitable. Contaminants are released through manufacture and use of products and as a result of treatment and disposal of wastes.
Wotherspoon, Robert Jason
core  

Stable Isotope Analysis of Planktonic Lower Food Webs of Lakes Erie, Huron, Michigan and Superior

open access: yesLimnological Review
Historical plankton samples from the St. Lawrence Great Lakes were subjected to taxon-specific 15N analysis to test the hypothesis that the changes recorded in zooplankton communities during the 21st Century are related to changes in the trophic ...
John T. Lehman, Shelby Burgess
doaj   +1 more source

The performance of the EU-Rotate_N model in predicting the growth and nitrogen uptake of rotations of field vegetable crops in a Mediterranean environment [PDF]

open access: yes, 2013
The EU-Rotate_N model was developed as a tool to estimate the growth and nitrogen (N) uptake of vegetable crop rotations across a wide range of European climatic conditions and to assess the economic and environmental consequences of alternative ...
A. VENEZIA   +12 more
core   +1 more source

Infiltration and short-term movement of nitrogen in a silt-loam soil typical of rice cultivation in Arkansas [PDF]

open access: yes, 2006
Rice production in Arkansas is one of the top three crop commodities in terms of cash receipts. Researchers and farmers report that nitrogen (N) needs to be managed according to a variety of factors with two important ones being soil and fertilizer type.
Brye, Kristofor R.   +5 more
core   +2 more sources

Efficient 15N hyperpolarization of [15N3]metronidazole antibiotic via spin-relayed pulsed SABRE-SHEATH

open access: yesJournal of Magnetic Resonance Open
Signal Amplification by Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei (SABRE-SHEATH) is an NMR hyperpolarization technique that relies of the simultaneous exchange of parahydrogen and a to-be-hyperpolarized molecule on the ...
Shiraz Nantogma   +5 more
doaj   +1 more source

Proton magnetic resonance imaging with a nitrogen-vacancy spin sensor

open access: yes, 2014
Nuclear magnetic resonance (NMR) imaging with nanometer resolution requires new detection techniques with sensitivity well beyond the capability of conventional inductive detection.
Awschalom, D. D.   +6 more
core   +1 more source

A secular increase in continental crust nitrogen during the Precambrian [PDF]

open access: yes, 2017
Recent work indicates the presence of substantial geologic nitrogen reservoirs in the mantle and continental crust. Importantly, this geologic nitrogen has exchanged between the atmosphere and the solid Earth over time. Changes in atmospheric nitrogen (i.
Goldblatt, Colin, Johnson, Benjamin W
core   +3 more sources

The use of carbon and nitrogen stable isotopes for the detection of poultry offal meal in meat-type quail feeds

open access: yesBrazilian Journal of Poultry Science, 2013
The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes.
ER Sernagiotto   +7 more
doaj  

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