Regulation of Synthesis and Release Processes in Central Catecholaminergic Neurons

1975 ◽  
pp. 187-203 ◽  
Author(s):  
J. Glowinski
Keyword(s):  
Catecholaminergic Neurons ◽  
Regulation Of Synthesis ◽  
Release Processes

PIXE MICROBEAM IN LOCALIZING METALS RELEASED FROM DENTAL AND ORTHOPEDIC IMPLANTS

2005 ◽  
Vol 15 (03n04) ◽  
pp. 187-193
Author(s):  
PIETRO PASSI ◽  
ANGELA ZADRO ◽  
SILVIO GALASSINI ◽  
GIULIANO MOSCHINI ◽  
PAOLO ROSSI ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Release Rate ◽  
Pure Titanium ◽  
Orthopedic Implants ◽  
Elemental Distribution ◽  
Commercially Pure Titanium ◽  
Metal Release ◽  
Hip Prostheses ◽  
Commercially Pure ◽  
Release Processes

The release of metals and other elements from dental and orthopedic implants into the tissues has been a matter of numerous studies. However, the conditions that favor such a phenomenon have not been completely understood so far. PIXE microbeam technique has been applied to study the spatial distribution of the elements released from the implants. Subjects of interest have been implants made from commercially pure titanium, Ti -6 Al -4 V alloy and 316 LWM surgical steel. Block sections of five dental implants, as well as tissues surrounding one metal spine plate and two hip prostheses, have been examined. Rabbit bones containing copper inclusions have been taken for microbeam analysis to complete the study about the metal release processes. Samples from the tissues and bone slices have been analyzed using PIXE microbeam setup at National Laboratories of Legnaro, Italy. Traces of the implant metals, including titanium but with the exception of vanadium, were found in the surrounding tissues and maps of their elemental distribution at different distances from the contact surface with implants have been obtained. The origin and the differences of the release rate of the observed metals have been discussed.

Analysis of the Adsorption and Release Processes of Bioactives from Lamiaceae Plant Extracts on Alginate Microbeads

2021 ◽  
Author(s):  
Maja Benković ◽  
Ivana Sarić ◽  
Ana Jurinjak Tušek ◽  
Tamara Jurina ◽  
Jasenka Gajdoš Kljusurić ◽  
...  
Keyword(s):  
Plant Extracts ◽  
Adsorption And Release ◽  
Release Processes

Catecholaminergic neurons in the brain-stem and sleep apnea in SIDS victims

2004 ◽  
Vol 10 (3-4) ◽  
pp. 173-178 ◽  
Author(s):  
Toshiko Sawaguchi ◽  
Yuri Ozawa ◽  
Patricia Franco ◽  
Hazim Kadhim ◽  
Jose Groswasser ◽  
...  
Keyword(s):  
Sleep Apnea ◽  
Brain Stem ◽  
Catecholaminergic Neurons ◽  
The Brain

Cytochrome P450 Turnover: Regulation of Synthesis and Degradation, Methods for Determining Rates, and Implications for the Prediction of Drug Interactions

2008 ◽  
Vol 9 (5) ◽  
pp. 384-393 ◽  
Author(s):  
Jiansong Yang ◽  
Mingxiang Liao ◽  
Magang Shou ◽  
Masoud Jamei ◽  
Karen Yeo ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Drug Interactions ◽  
Regulation Of Synthesis ◽  
Synthesis And Degradation

scholarly journals Predicting observational signatures of coronal heating by Alfvén waves and nanoflares

2007 ◽  
Vol 3 (S247) ◽  
pp. 279-287
Author(s):  
Patrick Antolin ◽  
Kazunari Shibata ◽  
Takahiro Kudoh ◽  
Daiko Shiota ◽  
David Brooks
Keyword(s):  
Power Law ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Power Law Distribution ◽  
Longitudinal Modes ◽  
Heating Mechanism ◽  
Set Up ◽  
Power Law Index ◽  
Power Law Distributions ◽  
Release Processes

AbstractAlfvén waves can dissipate their energy by means of nonlinear mechanisms, and constitute good candidates to heat and maintain the solar corona to the observed few million degrees. Another appealing candidate is the nanoflare-reconnection heating, in which energy is released through many small magnetic reconnection events. Distinguishing the observational features of each mechanism is an extremely difficult task. On the other hand, observations have shown that energy release processes in the corona follow a power law distribution in frequency whose index may tell us whether small heating events contribute substantially to the heating or not. In this work we show a link between the power law index and the operating heating mechanism in a loop. We set up two coronal loop models: in the first model Alfvén waves created by footpoint shuffling nonlinearly convert to longitudinal modes which dissipate their energy through shocks; in the second model numerous heating events with nanoflare-like energies are input randomly along the loop, either distributed uniformly or concentrated at the footpoints. Both models are based on a 1.5-D MHD code. The obtained coronae differ in many aspects, for instance, in the simulated intensity profile that Hinode/XRT would observe. The intensity histograms display power law distributions whose indexes differ considerably. This number is found to be related to the distribution of the shocks along the loop. We thus test the observational signatures of the power law index as a diagnostic tool for the above heating mechanisms and the influence of the location of nanoflares.

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