EUS-guided gold fiducial placement and migration rate

2014 ◽  
Vol 80 (3) ◽  
pp. 533-534 ◽  
Author(s):  
Lorenzo Fuccio ◽  
Gabriele Lami ◽  
Alessandra Guido ◽  
Carlo Fabbri
Keyword(s):  
1983 ◽  
Vol 71 ◽  
pp. 343-361
Author(s):  
S. Catalano

ABSTRACTThis review presents a summary of observed photospheric phenomena on RS CVn stars: the amplitude, shape, evolution and migration rate of the photometric wave in relation to the rotational and orbital motion.The main points considered are: 1) the activity level (maximum amplitude, short and long timescale variability) versus rotation period; 2) the activity cycles as inferred from changes in the wave migration rate and direction and from the variation of its amplitude; 3) the detection of differential rotation; 4) the connection between the orbital period variation and activity.


1990 ◽  
Vol 205 ◽  
Author(s):  
R.S. May ◽  
B. Evans

AbstractIn situ observations of CIGM in CaCO3 bicrystals with a SrCO3 solute source were made. The change in boundary orientation and migration rate were compared with solute concentration. The liquid film model for coherency strain Induced migration was generalized to any non-cubic system and applied to CaCO3-SrCO3. The coherent layer was modeled as a thin film on an infinite half-space. The strain energy was found from solution of the Hooke's law expressions transformed to the appropriate coordinate system. For triclinic or monoclinic films the strain tensor was found by an eigenvector decomposition of the transformation matrix that defined the lattice parameter change with composition. High anisotropy of Vegard's law constants for CaCO3-SrCO3 caused (111) to have the lowest coherency strain per unit solute. Surfaces perpendicular to (111) in coherent equilibria were predicted to have half the solute concentration and three times the migration driving force of those perpendicular to (111). However, no correlation between solute concentration and boundary orientation was observed. Ambiguous and contradictory evidence for a relationship between solute concentration, boundary orientation, and migration rate was found. The self-stress state of a grain boundary in a solute diffusion field may be better modelled as hydrostatic rather than plane stress. Hydrostatic compression may interact with the boundary excess volume and cause a PV driving force for migration. Predictions based on coherent equilibrium at a surface have not been tested for that geometry in calcite; they should be tested before they are applied to grain boundaries.


2014 ◽  
Vol 15 (10) ◽  
pp. 18725-18741 ◽  
Author(s):  
Arkadiusz Dziedzic ◽  
Robert Kubina ◽  
Agata Kabała-Dzik ◽  
Robert Wojtyczka ◽  
Tadeusz Morawiec ◽  
...  

2021 ◽  
Author(s):  
Anine Crous ◽  
Madeleen Jansen Rensburg ◽  
Heidi Abrahamse

Abstract Photobiomodulation (PBM) has been used as a bio stimulatory tool for adipose-derived mesenchymal stem cells (ADMSCs). The goal of this in vitro research was to examine the effects of combined and/or single applications of near infra-red (NIR) and green PBM using 5 J/cm2 on ADMSCs. The results indicated that the viability of ADMSCs are not affected by single or combined wavelengths of 525 and 825 nm at 5 J/cm2. However, PBM significantly stimulated cell metabolism seen by an increase in proliferation, it also upregulated intracellular ROS and MMP using 825 nm and 525 nm wavelengths. The combined wavelength irradiation mimicked results found for 825 nm during ATP measurement, cell concentration and migration rate, however significant MMP stimulation and increased ROS production was achieved. In conclusion, results indicate that the combination wavelengths of 525 and 825 nm can be used in the expansion and differentiation of ADMSCs for regenerative purposes.


2020 ◽  
Vol 47 (9) ◽  
pp. 840
Author(s):  
Xiaoquan Gao ◽  
Ruifeng Ying ◽  
Dan Zhao ◽  
Jiewei Zhu

Wheat grain from 12 different regions in China was used to study variations in the cell wall structure and chemical composition based on geography. The mobility and migration rate of water in wheat grain during moisture absorption and drying were determined under different relative humidity conditions. Depending on the geography, variations were noted in the thickness and component content of the wheat grain cell wall. Cell wall thickness was positively correlated with the total arabinoxylan (TAX) content. Cell wall thickness and TAX content of the aleurone layer were positively correlated with altitude and negatively correlated with longitude. The water migration rate decreased with the increase of cell wall thickness and TAX content. Nuclear magnetic resonance (NMR) results revealed that grains with thick aleurone cell wall showed increased molecular mobility of water. These findings lay the foundation for further study of water regulation in wheat cell wall.


2021 ◽  
Author(s):  
YuChen Lan ◽  
WenBin Tang ◽  
Changlai Yuan ◽  
Xiaogang Xue ◽  
Xiao Liu ◽  
...  

A depolarized electric field (Edp) of ferroelectrics to boost the carrier separation and migration rate is critical to promote the field of visible light photocatalytic hydrogen evolution (PHE). Here, the...


2011 ◽  
Vol 56 (10) ◽  
pp. 3058-3064 ◽  
Author(s):  
Albert Pahk ◽  
Johanne Rigaux ◽  
Vijay Poreddy ◽  
Joan Smith ◽  
Firas Al-Kawas

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