Results 41 to 50 of about 1,071,828 (189)

Transverse Relaxation of Scalar Coupled Protons in Magnetic Resonance of Non-Deuterated Proteins [PDF]

open access: yes, 2018
The transverse relaxation rates R 2=1/T 2 of protons can be determined by spin-echo sequences with multiple refocusing pulses using moderate radio-frequency field strengths and properly chosen inter-pulse delays so as to suppress echo modulations due to ...
Baishya, Bikash   +2 more
core  

Traceability of animal meals in Japanese quail eggs using the technique of 13C e 15N* stable isotopes

open access: yesBrazilian Journal of Poultry Science, 2013
The objective of this study was to trace the inclusion of bovine meat and bone meal (BMBM) in the diet of Japanese quails by analyzing eggs and egg fractions (yolk and albumen) by the technique of carbon-13 (13C) and nitrogen-15 (15N) stable isotopes. In
C Mori   +4 more
doaj  

Assessment of low amounts of meat and bone meal in the diet of laying hens by using stable isotopes

open access: yesSemina: Ciências Agrárias, 2015
The aim of this study was to assess whether the inclusion of low amounts of ingredients such as wheat bran, corn gluten and yeast in the diet of laying hens can interfere with the traceability of meat and bone meal (MBM) in eggs and its fractions ...
Luciene Aparecida Madeira   +7 more
doaj   +1 more source

Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] [PDF]

open access: yes, 1980
Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle.
Chalamet, A.   +2 more
core  

Reactive and mixing processes governing ammonium and nitrate coexistence in a polluted coastal aquifer [PDF]

open access: yes, 2018
A comprehensive hydrochemical, stable isotope and microbial analyses characterisation has been performed to evaluate the sources of groundwater, nitrogen pollution and degradation processes occurring in an industrial polluted coastal aquifer in the ...
Aravena, Ramon   +4 more
core   +2 more sources

Active Nitrogen Fixation by Iron-Reducing Bacteria in Rice Paddy Soil and Its Further Enhancement by Iron Application

open access: yesApplied Sciences, 2023
In rice paddy soil, biological nitrogen fixation is important for sustaining soil nitrogen fertility and rice growth. Anaeromyxobacter and Geobacteriaceae, iron-reducing bacteria belonging to Deltaproteobacteria, are newly discovered nitrogen-fixing ...
Zhengcheng Zhang   +5 more
doaj   +1 more source

Measurement of the Cotton-Mouton effect in nitrogen, oxygen, carbon dioxide, argon, and krypton with the Q & A apparatus

open access: yes, 2009
Experiments for vacuum birefringence and vacuum dichroism have been set up with high-finesse high magnetic experimental apparatuses, which seem to be ideal for small gaseous Cotton-Mouton effect (CME) measurements.
Adler   +32 more
core   +1 more source

Selective nitrogen adsorption via backbonding in a metal-organic framework with exposed vanadium sites. [PDF]

open access: yes, 2020
Industrial processes prominently feature π-acidic gases, and an adsorbent capable of selectively interacting with these molecules could enable important chemical separations1-4.
Colombo, Valentina   +12 more
core   +3 more sources

The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years

open access: yesHydrology, 2021
Nitrogen pollution has caused severe ecological and environmental crisis, especially in densely populated coastal regions. Using a mathematical model based on statistical data series from industry, agriculture, environmental protection, and population in
Yongsong Su   +3 more
doaj   +1 more source

Nitrogen isotope analysis of ammonium and glycine [PDF]

open access: yes, 2005
Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core  

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