Search results for "Diffusion"

The global spread of the concept of cultural policy

2020

The article studies UNESCO's program that, from the late 1960s onward, aimed at spreading globally the concept of cultural policy. An essential part of the program, UNESCO invited member states from different regions of the world to prepare reports on national cultural policy. That was successful in spreading cultural policy as a concept and as a governmental structure. Except for only Australia, Canada and the United States, in which cultural policy is handled at a sub-state level, all countries that produced a national report have established a ministry of culture, typically synchronously with the report. The analysis suggests that UNESCO's success was due to two factors: the process of d…

The role of the European Society of Human Genetics in delivering genomic education

2021

The European Society of Human Genetics (ESHG) was founded in 1967 as a professional organisation for members working in genetics in clinical practice, research and education. The Society seeks the integration of scientific research and its implementation into clinical practice and the education of specialists and the public in all areas of medical and human genetics. The Society works to do this through many approaches, including educational sessions at the annual conference; training courses in general and specialist areas of genetics; an online resource of educational materials (EuroGEMS); and a mentorship scheme. The ESHG Education Committee is implementing new approaches to expand the r…

Calcium efflux from human erythrocyte ghosts

1970

The passive Ca efflux from human red cell ghosts was studied in media of differing ion compositions and compared to the ATP-dependent Ca efflux. Cells were loaded with(45)Ca during reversible hemolysis, and the loss of radioactivity into the non-radioactive incubation medium was measured, usually for 3 hr at 37°C. Analysis of the efflux curves revealed that(45)Ca efflux followed the kinetics of a simple two-compartment system. In the concentration range between 0 and 1MM Ca in the external solution ([Ca(++)] o ), the rate constant of passive Ca efflux (k min(-1), fraction of(45)Ca lost per minute into the medium) increased from 0.00732 to 0.0150 min(-1). There was no further increase at hig…

A study of physical processes in microplasma capillary discharges

2011

We continue the research of low-pressure capillary discharge lamps of 500  μ m in radius in Ar/Hg, Kr/Hg and Xe/Hg mixtures. In the previous paper, an experimental approach which combines the optical emission spectroscopy (OES) and tomographic methods was developed to study the capillary discharge. The present work is focused on interpretation of the tomographic reconstruction results for understanding the physical processes occurring in a capillary plasma. Analyzing the results of reconstruction, it was concluded that the radial profiles of Ar, Kr and Xe emission coefficients are in a good agreement with the Schottky theory. According to the Schottky model, ionization processes in plasma a…

Modelli psicologici di helping behavior

2011

Loading carbonaceous materials with silver for the treatment of chloro-organic compounds in aqueous phase

2012

Many electrochemical technologies, either based on novel concepts (such as microbial fuel cells), experimental setups (such as photoelectrochemical or solar photoelectro-Fenton reactors) or materials (mainly focused on the use of large O2-overpotential anodes like BDD) have been devised in recent years for water remediation. Special attention has been paid to highly toxic, biorefractory organic pollutants such as the chlorinated hydrocarbons, which conjugate toxicity with chemical stability, bioaccumulation and long-range diffusivity [1]. Electroreduction at silver cathodes becomes an interesting alternative to degrade chloro-organic compounds, but it may lead to the accumulation of reactio…

Electromagnetic scattering solutions for digital signal processing

2010

Phosphotungstic acid (PTA) in the synthesis of 3D CdS superstructures by diffusion assisted hydrothermal method

2015

Abstract In this study, the synthesis of cadmium sulfide (CdS) microstructures by gas diffusion assisted hydrothermal method using phosphotungstic acid (PTA) is reported. The as-synthesized products were characterized by Fourier transform infrared (FTIR), powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effects of PTA dose, thioacetamide amount, time and temperature on the morphology of obtained particles have been studied. In this process, PTA ion host stabilizes the CdS particles against aggregation and thioacetamide plays two roles, being at the same time a sulfur source and a capping ligand. Based on the performed analyses it seems that the thioacetamide is mor…

How Do Explicitly Expressed Emotions Influence Interpersonal Communication and Information Dissemination? : A Field Study of Emoji's Effects on Comme…

2016

Feasibility in routine clinical setting of combined resting-state fMRI and DTI-tractography for surgical planning of brain tumors

2020

Purpose Methods and materials Results Conclusion Personal information and conflict of interest References