Search results for " (CVD)"

NUOVI VETRI TERMOCROMICI: ANALISI DEI CONSUMI ELETTRICI NEL MODELLO DI UN EDIFICIO (NEW THERMOCHROMIC GLAZING: ENERGY CONSUMPTION ANALYSIS IN A BUILD…

2009

In this work we tested the energy performance of the new thermochromic glazing developed at the University College London (UCL) under the supervision of Prof. Ivan P. Parkin. The aim of this study is understanding how efficient these coating could be if applied in several climate conditions at different latitudes in the northern hemisphere and in different kind of buildings in comparison to some products by Pilkington Glass UK.

Hybrid aerosol assisted atmospheric pressure Chemical Vapour Deposition: a facile route toward nano-composite thin films?

2009

A hybrid chemical vapour deposition strategy is presented as a facile route for the production of vanadium dioxide nano-composite thin films. The effect of the inclusion of gold nano-particles and the use of a surfactant molecule; tetraoctylammonium bromide (TOAB), is discussed. The films are fully characterised and it is shown that micro-structural changes lead to an enhancement of thermochromic properties, whilst gold nano-particles lead to a change in the films optical properties. Optical data is used in energy modelling studies to elucidate the films potential as an energy saving coating in architectural glazing.

Nuovi rivestimenti termocromici a scala nanometrica per vetrate architettoniche depositati tramite la tecnica AA/AP CVD

2008

The aim of this work is to study and analyse new thermochromic coatings for architectural glazing carried out using a novel hybrid technique called Aerosol Assisted and Atmospheric Pressure Chemical Vapour Deposition (AA/AP CVD). This work was carried on at he University College London (UCL) – Chemistry Department – Christopher Ingold Laboratories – London (UK), under the supervision of the Prof. Ivan P. Parkin, with the collaboration of Dr. Clara Piccirillo and Dr. Russell Binions. The activities completed were the depositions of Gold-doped Vanadium (IV) Dioxide coatings and their chemical and physical analysis.

Vanadium dioxide and gold nanocomposite films for glazing application

2009

Vanadium dioxide is a material with great potential as an intelligent glazing material. The technology is based on a metal to semiconductor transition (MST) where there is an associated structural change from the higher temperature rutile structure to the lower temperature monoclinic structure. This structural transition results in significant changes in optical properties and electrical conductivity. Hybrid aerosol assisted and atmospheric pressure chemical vapour deposition methodology has been utilised, to produce thin films of gold nano-particle vanadium dioxide nanocomposites. Good surface coverage is observed comparable to that of APCVD processes and a variety of different film thickn…

OLIVE OIL CONSUMPTION AND RISK OF CORONARY HEART DISEASE AND/OR STROKE: A META-ANALYSIS OF CASE-CONTROL, COHORT AND INTERVENTION STUDIES

2014

Increasing evidence suggests that the Mediterranean diet can reduce the risk of CVD. Olive oil is the hallmark of this dietary pattern. We conducted a meta-analysis of case–control, prospective cohort studies and a randomised controlled trial investigating the specific association between olive oil consumption and the risk of CHD (101 460 participants) or stroke (38 673 participants). The results of all observational studies were adjusted for total energy intake. The random-effects model assessing CHD as an outcome showed a relative risk (RR) of 0·73 (95% CI 0·44, 1·21) in case–control studies and 0·96 (95% CI 0·78, 1·18) in cohort studies for a 25 g increase in olive oil consumption. In co…

Functional Thin Films for Glazing Application

2009

Vanadium dioxide is a thermochromic material with great potential for use in intelligent glazing. The thermochromic properties result from a metal to semiconductor transition (MST) where there is an associated structural change from the higher temperature rutile structure to the lower temperature monoclinic structure. This structural transition results in significant changes in optical properties and electrical conductivity. Various chemical vapour deposition (CVD) methodologies have been utilised, to produce thin films of vanadium dioxide. Different strategies are presented for the inclusion of metal dopants and the production of nano-composites. The use of a surfactant molecule, tetraocty…

Energy modelling studies of enhanced glazing.

2009

The research on new “energy materials” is a very interesting field of study in the direction of energy saving control in the building construction sector. Lots of studies have been carrying on to develop new enhanced glazing, new synthesis and analysing procedures but simulating their real behaviour is often very difficult and expensive. The easiest way to test the energy performance of new enhanced glazing, in this work doped vanadium (IV) dioxide thermochromic glazing, is to simulate the way they would respond if they were installed in a building. The software used to perform such simulations is Energy Plus™ which is an energy analysis and thermal load simulation program. The aim of this …

Hybrid Chemical Vapour Deposition: Gold and Vanadium Dioxide Nano-composites for Smart Windows

2009

Red Blood Cells Distribution Width as Biomarker of Worsening in Atherosclerosis

2018

Red blood cell Distribution Width (RDW) is a parameter of the circulating erythrocytes’ size that it has reported to be associated with Cardiovascular Diseases (CVDs) [1-7]. The related mechanism of this association is not fully understood. However, RDW is an indicator of inflammation related to early inflammatory biomarkers, such as C-reactive protein (CRP), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) [8,9]. Accordingly, systemic chronic inflammation leads to dysfunctional bone marrow with unsuccessful production of red blood cells [10]. As a result, it determines the migration of reticulocytes into the peripheral circulation, followed by an increase in circulating levels of i…