Fractionation of Nitrogen Isotopes by Domestic Animals
نویسندگان
چکیده
منابع مشابه
Microbiological Fractionation of Sulphur Isotopes.
A fractionation of sulphur isotopes was found in all hetabolic processes investigated except those in which elemental sulphur was the starting substrate for growth of Thiobacillus concretivorus and Chromatiurn sp. and for reduction by Saccharomyces cerevisiae. Except for polythionates formed during sulphide oxidation by T. concretivorus or Chromatiurn sp., the products of metabolism were enrich...
متن کاملFractionation of Hydrogen Isotopes by Sulfate- and Nitrate-Reducing Bacteria
Hydrogen atoms from water and food are incorporated into biomass during cellular metabolism and biosynthesis, fractionating the isotopes of hydrogen-protium and deuterium-that are recorded in biomolecules. While these fractionations are often relatively constant in plants, large variations in the magnitude of fractionation are observed for many heterotrophic microbes utilizing different central...
متن کاملThe fractionation of nitrogen and oxygen isotopes in macroalgae during the assimilation of nitrate
In order to determine and understand the stable isotope fractionation of O and N manifested during assimilation of NO−3 in marine macro-benthic algae, two species (Ulva sp. and Agardhiella sp.) have been grown in a wide range of NO−3 concentrations (2–500 μM). Two types of experiments were performed. The first was one in which the concentration of the NO−3 was allowed to drift downward as it wa...
متن کاملSuspected poisoning of domestic animals by pesticides.
A retrospective study was carried out by reviewing all suspected cases of domestic animal poisoning attributed to pesticides, reported to the Milan Poison Control Centre (MPCC) between January 2011 and December 2013. During this period, pesticides were found to be responsible for 37.3% of all suspected poisoning enquiries received (815). The most commonly species involved was the dog (71.1% of ...
متن کاملFractionation of hydrogen isotopes in lipid biosynthesis
Isotopic compositions of carbon-bound hydrogen in individual compounds from eight dierent organisms were measured using isotope-ratio-monitoring gas chromatography±mass spectrometry. This technique is capable of measuring D/H ratios at natural abundance in individual lipids yielding as little as 20 nmol of H2, and is applicable to a wide range of compounds including hydrocarbons, sterols, and ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nihon Chikusan Gakkaiho
سال: 1985
ISSN: 1346-907X,1880-8255
DOI: 10.2508/chikusan.56.361