Results 31 to 40 of about 1,852,468 (255)

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (¹³C, &
Bearhop, S., Furness, R. W., Hilton, G.H., Furness, RW, Bearhop, S, Hilton, GM, Votier, S. C.; id_orcid, Waldron, S, Votier, SC, Furness, R.W., Waldron, S., Hilton, G. M.   +11 more
core   +1 more source

Iterative systems, a topological and categorial approach

Journal of Numerical Analysis and Approximation Theory, 1973
Not available.
M. Jalobeanu
doaj   +2 more sources

Cycad forensics: tracing the origin of poached cycads using stable isotapes, trace element concentrations and radiocarbon dating techniques [PDF]

, 2013
In South Africa, the greatest threat to cycad populations is the illegal removal of wild plants for landscaping purposes and collector's gardens, resulting in declining populations that are already threatened with extinction.
Retief, Kirsten
core   +1 more source

Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) [PDF]

, 2010
We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable ...
Dorothée Kopp, Aurélia Martino, Santoul, Frédéric, Céréghino, Régis, Frédéric Santoul, Kopp, Dorothée, Régis Céréghino, Syväranta, Jari, Jari Syväranta, Martino, Aurelia   +9 more
core   +1 more source

A stable isotope method using a [2H5]glycerol bolus to measure very low density lipoprotein triglyceride kinetics in humans

Journal of Lipid Research, 1999
We have developed a method using a bolus of [2H5]glycerol to determine parameters of VLDL-triglyceride (VLDL-TG) turnover and have compared the data to that obtained using simultaneously a bolus of [2-3H]glycerol in six young normolipidemic men.
Simone Lemieux, Bruce W. Patterson, André Carpentier, Gary F. Lewis, George Steiner   +4 more
doaj   +1 more source

A comparative study of production methods for nuclear-grade boron carbide powder

EPJ Nuclear Sciences & Technologies
Two industrial-scale methods for synthesizing nuclear-grade boron carbide (B4C) powder have been investigated and compared: direct synthesis from elements and carbothermal reduction.
Mestvirishvili Zviadi, Jalabadze Nikoloz, Nadaraia Lili   +2 more
doaj   +1 more source

Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses [PDF]

, 2010
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and thus lead to complex and cryptic ...
Gómez-Díaz Elena, Gómez Díaz, Elena, González-Solís, Jacob, González-Solís Jacob   +3 more
core   +1 more source

The Preparation of Carbon and Nitrogen Stable Isotopes Reference Materials Using Sediments from the Bohai and East China Seas

Yankuang ceshi, 2017
The stable isotope of carbon and nitrogen (δ13C and δ15N) in marine sediments have received much attention as they can be used to trace the sources of organic matter and are helpful in understanding the carbon cycle, climate change and the transformation
QIN De-di, HE Xing-liang, ZHANG Yuan-yuan, LI Feng, CHEN Yu-feng, ZHANG Pei-yu   +5 more
doaj   +1 more source

Environmental controls on the stable isotopic composition of Mercenaria mercenaria: Potential application to paleoenvironmental studies [PDF]

, 2003
We have investigated the environmental controls of seasonally resolved records of oxygen and carbon isotopes of modern Mercenaria mercenaria bivalves collected live from five coastal sites along the east coast of North America.
Linsley, B. K., Howe, S. S., Elliot, M., deMenocal, P. B.   +3 more
core   +1 more source

Centrifugal Separation of Titanium Isotopes Using Titanium Tetrachloride as Processing Gas

Journal of Isotopes, 2020
Stable isotope techniques have been widely used in modern agriculture, ecological environment, medical diagnosis, nuclear industry, fundamental physics research, and so on. Natural titanium has 5 stable isotopes.
PEI Gen;PAN Jianxiong;ZHOU Mingsheng;JIAN Conghui
doaj   +1 more source