Relaxation-time analysis of second-sound data in NaF

1975 ◽  
Vol 21 (3) ◽  
pp. 209-215 ◽  
Author(s):  
H. Beck
Keyword(s):  
Relaxation Time ◽  
Second Sound ◽  
Time Analysis ◽  
Sound Data

Free carriers's effective mass and relaxation-time analysis by high-pulsed-field Faraday oscillations in III-V compounds

1976 ◽  
Vol 13 (6) ◽  
pp. 2576-2582 ◽  
Author(s):  
D. Julienne ◽  
F. Le Saos ◽  
A. Fortini ◽  
Ph. Bauduin
Keyword(s):  
Relaxation Time ◽  
Effective Mass ◽  
Time Analysis ◽  
Pulsed Field

scholarly journals In Vivo MRI Tracking of Mesenchymal Stromal Cells Labeled with Ultrasmall Paramagnetic Iron Oxide Particles after Intramyocardial Transplantation in Patients with Chronic Ischemic Heart Disease

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Anders Bruun Mathiasen ◽  
Abbas Ali Qayyum ◽  
Erik Jørgensen ◽  
Steffen Helqvist ◽  
Annette Ekblond ◽  
...  
Keyword(s):  
Heart Disease ◽  
Relaxation Time ◽  
Iron Oxide ◽  
Ischemic Heart Disease ◽  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Human Studies ◽  
Ischemic Heart ◽  
Time Analysis ◽  
Intramyocardial Injection

Background. While regenerative stem cell therapy for ischemic heart disease has moved into phase 3 studies, little is still known about retention and migration of cell posttransplantation. In human studies, the ability to track transplanted cells has been limited to labeling with radioisotopes and tracking using nuclear imaging. This method is limited by low resolution and short half-lives of available radioisotopes. Longitudinal tracking using magnetic resonance imaging (MRI) of myocardial injected cells labeled with iron oxide nanoparticles has shown promising results in numerous preclinical studies but has yet to be evaluated in human studies. We aimed to evaluate MRI tracking of mesenchymal stromal cells (MSCs) labeled with ultrasmall paramagnetic iron oxide (USPIO) nanoparticles after intramyocardial transplantation in patients with ischemic heart disease (IHD). Methods. Five no-option patients with chronic symptomatic IHD underwent NOGA-guided intramyocardial transplantation of USPIO-labeled MSCs. Serial MRI scans were performed to track labeled cells both visually and using semiautomated T2∗ relaxation time analysis. For safety, we followed symptoms, quality of life, and myocardial function for 6 months. Results. USPIO-labeled MSCs were tracked for up to 14 days after transplantation at injection sites both visually and using semiautomated regional T2∗ relaxation time analysis. Labeling of MSCs did not impair long-term safety of treatment. Conclusion. This was a first-in-man clinical experience aimed at evaluating the utility of MRI tracking of USPIO-labeled bone marrow-derived autologous MSCs after intramyocardial injection in patients with chronic IHD. The treatment was safe, and cells were detectable at injection sites up to 14 days after transplantation. Further studies are needed to clarify if MSCs migrate out of the injection area into other areas of the myocardium or if injected cells are washed out into the peripheral circulation. The trial is registered with ClinicalTrials.gov NCT03651791.

Relaxation Time Analysis of a Simulated Binary Alloy

1991 ◽  
Vol 02 (01) ◽  
pp. 491-496
Author(s):  
JACEK SOŁTYS ◽  
TOMASZ A. KOCHAN
Keyword(s):  
Relaxation Time ◽  
Binary Alloy ◽  
Time Analysis

scholarly journals Plane waves in thermoelasticity with one relaxation time

2001 ◽  
Vol 26 (4) ◽  
pp. 225-232
Author(s):  
Jun Wang ◽  
Wen Dong Chang
Keyword(s):  
Relaxation Time ◽  
General Solution ◽  
Laplace Transform ◽  
Half Space ◽  
Plane Waves ◽  
Elastic Half Space ◽  
Second Sound ◽  
Boundary Temperature ◽  
Explicit Expressions

We apply the thermoelastic equations with one relaxation time developed by Lord and Shulman (1967) to solve some elastic half-space problems. Laplace transform is used to find the general solution. Problems concerning the ramp-type increase in boundary temperature and stress are studied in detail. Explicit expressions for temperature and stress are obtained for small values of time, where second sound phenomena are of relevance. Numerical values of stress and temperature are calculated and displayed graphically.

Distribution of Relaxation Time Analysis of Cathode Micro-Patterned PEFC

2020 ◽  
Vol MA2020-02 (33) ◽  
pp. 2158-2158
Author(s):  
Morio Tomizawa ◽  
Keisuke Nagato ◽  
Kohei Nagai ◽  
Masayuki Nakao
Keyword(s):  
Relaxation Time ◽  
Time Analysis

Influence of Cellulosic Additives on Tricalcium Silicate Hydration:  Nuclear Magnetic Resonance Relaxation Time Analysis

2004 ◽  
Vol 108 (15) ◽  
pp. 4869-4874 ◽  
Author(s):  
Marcella Alesiani ◽  
Silvia Capuani ◽  
Rodorico Giorgi ◽  
Bruno Maraviglia ◽  
Ilaria Pirazzoli ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Relaxation Time ◽  
Magnetic Resonance ◽  
Tricalcium Silicate ◽  
Nuclear Magnetic Resonance Relaxation ◽  
Time Analysis ◽  
Resonance Relaxation ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document