Results 31 to 40 of about 268,489 (347)

Iterative systems, a topological and categorial approach

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

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

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

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

Resonant photonuclear isotope detection using medium-energy photon beam

, 2012
Resonant photonuclear isotope detection (RPID) is a nondestructive detection/assay of nuclear isotopes by measuring gamma rays following photonuclear reaction products.
Hiroyasu Ejiri, S. Karsch, Tatsushi Shima   +2 more
core   +2 more sources

First ice core records of NO3− stable isotopes from Lomonosovfonna, Svalbard [PDF]

, 2014
Samples from two ice cores drilled at Lomonosovfonna, Svalbard, covering the period 1957–2009, and 1650–1995, respectively, were analyzed for NO3− concentrations, and NO3− stable isotopes (δ15N and δ18O).
Björkman, M. P., Isaksson, E., Kaiser, J., Marca, A., Martma, T., Pettersson, R., Pohjola, V. A., Samyn, D., Vega, C. P.   +8 more
core   +1 more source

Stable isotopes of Hawaiian spiders reflect substrate properties along a chronosequence. [PDF]

, 2018
The Hawaiian Islands offer a unique opportunity to test how changes in the properties of an isolated ecosystem are propagated through the organisms that occur within that ecosystem.
Dawson, Todd, Gillespie, Rosemary, Kennedy, Susan   +2 more
core   +2 more sources

Dataset of stable isotopes of precipitation in the Eurasian continent [PDF]

Earth System Science Data
Stable isotopes in precipitation can effectively reveal the process of atmospheric water circulation, serving as an effective tool for hydrological and water resource research, climate change, and ecosystem studies. The scarcity of stable isotope data in
L. Chen, L. Chen, L. Chen, Q. Wang, Q. Wang, Q. Wang, G. Zhu, G. Zhu, G. Zhu, X. Lin, X. Lin, X. Lin, D. Qiu, D. Qiu, D. Qiu, Y. Jiao, Y. Jiao, Y. Jiao, S. Lu, S. Lu, S. Lu, R. Li, R. Li, R. Li, G. Meng, G. Meng, G. Meng, Y. Wang, Y. Wang, Y. Wang   +29 more
doaj   +1 more source

Stable isotopes in diatom silica [PDF]

, 2010
Diatom silica is a form of biogenic opal (SiO2.nH2O, Figure 1) containing oxygen, silicon, carbon and nitrogen isotopes that can be used in lacustrine and marine paleoenvironmental studies.
Leng, Melanie J., Swann, George E.A.
core  

Lithium synthesis in microquasar accretion

, 2012
We study the synthesis of lithium isotopes in the hot tori formed around stellar mass black holes by accretion of the companion star. We find that sizable amounts of both stable isotopes 6Li and 7Li can be produced, the exact figures varying with the ...
Iocco, Fabio, Pato, Miguel
core   +1 more source