Results 11 to 20 of about 49,445 (241)

Analysis of precipitation and recharge of aquifers in Tota and Ibagué (Colombia) from stable isotopes (18O and 2H)

Revista Facultad de Ingeniería, 2018
Identifying the hydraulic connection between the area of recharge and the area of discharge in aquifers is only possible by using tracers; the 18O and 2H isotopes have proven to be good tracers to determine such hydraulic connection.
Jorge Eliecer Mariño-Martínez, Andrés Martínez-Sánchez   +1 more
doaj   +1 more source

Preparation of intravenous cholesterol tracer using current good manufacturing practices1

Journal of Lipid Research, 2015
Studies of human reverse cholesterol transport require intravenous infusion of cholesterol tracers. Because insoluble lipids may pose risk and because it is desirable to have consistent doses of defined composition available over many months, we ...
Xiaobo Lin, Lina Ma, Susan B. Racette, William P. Swaney, Richard E. Ostlund, Jr.   +4 more
doaj   +1 more source

Studies concerning mass and heat transfer on B7 structured packing [PDF]

Nuclear Technology and Radiation Protection, 2004
The paper presents theoretical and experimental data concerning mass and heat transfer on B7 structured packing, used for deuterium separation in distillation column.
Croitoru Cornelia, Pop Floarea, Titescu Gheorghe, Stefanescu Ioan, Peculea Marius, Trancota Dan   +5 more
doaj   +1 more source

Signal Processing for the Measurement of the Deuterium/Hydrogen Ratio in the Local Interstellar Medium

Entropy, 2014
We report on a comprehensive signal processing procedure for very low signal levels for the measurement of neutral deuterium in the local interstellar medium from a spacecraft in Earth orbit.
Diego Francisco Rodríguez Moreno, Peter Wurz, Lukas Saul, Maciej Bzowski, Marzena Aleksanda Kubiak, Justyna Maria Sokół, Priscilla Frisch, Stephen Anthony Fuselier, David John McComas, Eberhard Möbius, Nathan Schwadron   +10 more
doaj   +1 more source

Comparison Study of the Metabolic Characteristics of Three Kinds of Deuterium-labeled Glucose in Rat Glioma Cells

Chinese Journal of Magnetic Resonance, 2023
Deuterium (2H) magnetic resonance imaging is an emerging molecular metabolic imaging method that can visualize the metabolic pathway in vivo, and therefore has great potential in clinical applications such as cancer detection.
FANG Yi, WAN Qian2, YUAN Jiawen, LIN Shaoqiang, LI Ye, LIU Xin, ZHENG Hairong, ZOU Chao   +7 more
doaj   +1 more source

Old Discovery Leading to New Era: Metabolic Imaging of Cancer with Deuterium MRI

Magnetochemistry, 2022
The understanding of metabolic compartments involved in the survival, growth and invasion of tumours is important for modern cancer research.
Hao Ding, Athar Haroon, Simon Wan, Thoralf Niendorf, Sola Adeleke   +4 more
doaj   +1 more source

Mapping of exogenous choline uptake and metabolism in rat glioblastoma using deuterium metabolic imaging (DMI)

Frontiers in Cellular Neuroscience, 2023
IntroductionThere is a lack of robust metabolic imaging techniques that can be routinely applied to characterize lesions in patients with brain tumors. Here we explore in an animal model of glioblastoma the feasibility to detect uptake and metabolism of ...
Kevan L. Ip, Monique A. Thomas, Kevin L. Behar, Robin A. de Graaf, Robin A. de Graaf, Henk M. De Feyter   +5 more
doaj   +1 more source

Validation of deuterium incorporation against sterol balance for measurement of human cholesterol biosynthesis

Journal of Lipid Research, 1998
To examine the validity of the deuterium (D) incorporation technique for measurement of human cholesterol synthesis rates, D uptake from D2O into cholesterol was compared to sterol balance in 13 subjects each under three controlled diet settings ...
P.J.H. Jones, L.M. Ausman, D.H. Croll, J.Y. Feng, E.A. Schaefer, A.H. Lichtenstein   +5 more
doaj   +1 more source

D₂-Filled Hollow-Core Fiber Gas Raman Laser at 2.15 μm

Photonics, 2022
Fiber lasers around 2 µm band have attractive applications, such as coherent detecting, material processing, pump source for mid-IR lasers based on nonlinear frequency shift, etc. Fiber gas Raman lasers (FGRLs) based on the stimulated Raman scattering of
Ziyan Li, Wenxi Pei, Hao Li, Wei Huang, Xuanxi Li, Zefeng Wang, Jinbao Chen   +6 more
doaj   +1 more source

Deuterium trafficking, mitochondrial dysfunction, copper homeostasis, and neurodegenerative disease

Frontiers in Molecular Biosciences
Deuterium is a natural heavy isotope of hydrogen, containing an extra neutron. Eukaryotic organisms have devised complex metabolic policies that restrict the amount of deuterium reaching the mitochondria, because it damages the ATPase pumps, leading to ...
Stephanie Seneff, Anthony M. Kyriakopoulos, Anthony M. Kyriakopoulos   +2 more
doaj   +1 more source