Using sports infrastructure to deliver economic and social change: Lessons for London beyond 2012

Over the last two decades, there has been a new trend emerging within sport, which has seen a shift, from investment for the sake of sport, to investment in sport for good (Sport England, 2008). In the context of the latter approach, there has been an emergence of the use of sport to address regeneration objectives, largely stemming from the belief of government and other sporting and non-sporting organizations, that it can confer a wide range of economic and social benefits to individuals and communities beyond those of a purely physical sporting nature, and can contribute positively to the revitalization of declining urban areas (BURA, 2003). This commentary will examine regeneration legacy in the context of the London Olympic Games. In particular, it will focus on the use of sports stadia as a tool for delivering economic and social change, and by drawing upon previous examples, suggest lessons London can learn to enhance regeneration legacies beyond 2012

BODIPY derivatives as donor materials for bulk heterojunction solar cells

BODIPY derivatives have been used as donor in solution-processed bulk heterojunction solar cells using PCBM as acceptor. A power conversion efficiency of 1.34% has been obtained under simulated solar irradiation

Influence of the sodium fluoride on the development and survival of the loach embryos

Background: The study of fluoride effects at the cellular level is still essential for biophysics, medicine, and ecology as one of the most common environmental pollutants. Its impact on embryonic objects is poorly understood. Objectives: The aim of the work was: 1) to study the effect of sodium fluoride (in the minimum concentration to inhibit growth) on the morphological development of loaсh embryos; 2) evaluation of the degree of survival of embryos in the presence of sodium fluoride in the incubation medium and determination of the coefficient Ks. Materials and methods: Ovulation in loach females (Misgurnus fossilis L.) was stimulated by intramuscular injection of female chorionic gonadotropin (500 units), eggs were obtained by 36 h after stimulation, fertilized in Petri dishes with a suspension of sperm according to Neifach A. A. The stages of development were observed visually used a binocular microscope MBS-9 with a photo camera. The experimental embryos were incubated in Goltfreter's solution with the addition of sodium fluoride to a final minimum concentration to inhibit growth of 500 μmol/l. Results: Sodium fluoride inhibits the development of loach embryos and leads to developmental defects. The noticeable developmental defects caused by sodium fluoride were a reduction in the size of the larvae's head and tail, low body pigmentation, changes in the eye diameter, and embryonic touch reflex. As a result of the accumulation of fluoride in embryonic cells, on the third day of development, embryonic mortality increased to 88,9%. On 12 days under the action of sodium fluoride, the total number of larvae was about 2%. Conclusions: The ability of NaF to act as a direct teratogen was tested on the cold-blooded embryo model, the same effect was found by other investigators on the FETAX model. The possibility that sodium fluoride may cause toxic and/or neuromuscular developmental defects in human embryos also should be considered. Avoiding excessive getting of fluoride in the body by limiting the consumption of foods or beverages high in fluoride, the use of fluoride in dental care products, etc. requires detailed assessment

Semi-conducteurs Isotropes et Stables pour Cellules solaires Organiques

Date du colloque : 03/2011</p

Organic Bulk-heterojunction Solar Cells Based on BODIPY Derivatives as Donors

Date du colloque&nbsp;: 10/2009</p

Multi-donor molecular bulk heterojunction solar cells: improving conversion efficiency by synergistic dye combinations

Molecular bulk heterojunction solar cells with a power conversion efficiency of 1.70% have been fabricated using as donor BODIPY dyes with complementary light-harvesting properties

Multi-donor molecular bulk heterojunction solar cells based on BODIPY derivatives

Date du colloque&nbsp;: 07/2009</p

Bodipy derivatives for multi-donor bulk heterojunction solar cells

Date du colloque&nbsp;: 06/2010</p