Future electric power technology choices of Brazil: a possible conflict between local pollution and global climate change.

Furniture collections can be key in the interpretation of historic houses to visitors, providing a link to their own homes and making houses seem inhabited. The ornate and highly decorative surfaces reflect not only the aesthetic taste of the period, for example chinoserie inspired lacquerware, but also the design and craft expertise and manufacturing skills required to produce the objects. These surfaces can demonstrate the effects of time, having been subjected to the surrounding environment within the property. For highly decorated surfaces, such as veneer and marquetry, this can include loss of material, lifting veneers, fading of wood and its finishes, along with cracks, splits, flaking, and warping. Preventive conservation seeks to minimize the risk to collections by optimizing the display and storage parameters. However, research on these materials to determine the optimal display conditions can be limited, insufficient, or even entirely absent. This review presents the available information for re...

Safe display parameters for veneer and marquetry objects: A review of the available information for wooden collections

Materials that are used for exterior finishes of buildings are their last line of defence against the elements of climate. The compliance of the materials with the environment will determine their performance and consequent repainting. A high percentage of buildings? exterior surfaces are finished with paint in Lagos in the south-western region of Nigeria that has additional climatic stress of saline air from the Atlantic Ocean. This research examines the factors that influence the use of paint and the occurrence of salt impact indicators as parameters for measuring its performance in Lagos, Nigeria, in order to determine the repainting requirement when applied as exterior finish. A mixed approach of qualitative and quantitative methods was used. Survey was done to collect data for the analysis. The study area was bifurcated into two zones (Zone A & B) in order to compare the performance of painted exterior of the buildings along the coast with the hinterland. After exhaustive literature search, variables identified were used to investigate the phenomenon. While some variables were measured using Likert?s scale, some were simply measured through categorical and continuous scales. A total of 317 questionnaires were returned out of the 384 sample size of the first target population. Guided interview was conducted on sixteen (16) architects and six (6) paint manufacturers provided information on salt resistant paint of the second and third target population respectively. Various appropriate statistical models were used with the significance level set at p<0.05 in processing the data to obtain results for inferences. Findings show that the choice and usage of paint as exterior finish for buildings in the study area depend on experience, professional advice, availability, cost, societal influence and cultural values. The performance and climatic compliance are jettisoned because of cultural attachment to colour that paints make available with relative ease. All salt impact indicators appeared earlier in Zone A than Zone B. These also necessitate earlier and frequent repainting in Zone A. The number of years required for repainting in Zone A and Zone B are 2 and 4 years respectively compared with 5-7 years established in past researches as required for repainting in other parts of the tropical region. The outcome of the research facilitates maintenance forecast and schedule for painted exterior in the tropics.

Building exterior paint performance in tropical salty environment of Lagos

This study estimates minimum marginal health benefits (morbidity reduction only) of air pollution control and total health benefits arising from regulatory intervention regarding the adoption of the World Bank emission guidelines (WBEG) for thermal power plants (TPPs) in Delhi. The Industrial Source Complex-Short-Term Version–3 (ISCST3) model has been used to estimate the contribution to air pollution from TPPs. The household health production function (avertive behaviour) has been used to value health benefits of air pollution control. The study revealed that the ambient air pollution due to TPPs is reduced by between 62.17% to 83.45% by adopting the WBEG. Annual marginal benefit due to reduction in exposure to air pollution by 1 μg m−3 is estimated to be US$0.353 per person. Total annual health benefits for adopting the WBEG for TPPs are estimated at US$235.19 million. This study provides a novel methodology to evaluate health benefits of regulatory intervention.

Health benefits valuation of regulatory intervention for air pollution control in thermal power plants in Delhi, India

Purpose – Paint that is used as exterior finish is subject to the stresses of the climate. The factors of climate such as sun and rain are major source of quick deterioration of paint. The existence of saline air and endogenic salt in substrates in any environment will increase the rate of failure and frequency of repainting of building exterior wall. The purpose of this paper is to ascertain the difference in the frequency of repainting of exterior surface of buildings in areas at close proximity to the Atlantic Ocean and the hinterland. Design/methodology/approach – The research adopted a survey method that involved the administration of structured questionnaire on 384 respondents to elicit data for analysis. SPSS 15.0 software was used to analyse the data. The study area is divided into two zones. Findings – Paint of the same quality from the same manufacturer is found to perform differently. All defects that are caused by salt attack occur earlier in Zone B than Zone A. The frequency of repainting (ma...

James Gamble

Papers

A critique of estimates of the cost of damage to building materials due to atmospheric attack