THE fact that pneumonia mortality is higher in urban areas suggests that air pollution has some effect upon the incidence of this disease. To test such a possibility, pneumonia mortality-rates were calculated for the whole populations of fifty-three cotinty and Metropolitan boroughs in England, Scotland, and Wales, from the Registrar General's annual statistical reviews for the 5-year period 19...

The self-built fine water mist fire extinguishing platform studied the effect of ultra-fine in cold storage fires. combustible material selected for our experiments is insulation material—polystyrene foam board. combustion characteristics board were by pyrolysis analysis. We analyzed temperature, smoke, and other scene when a occurs then manipulated to carry out experiment. Experiments aim chan...

Abstract RDX-based combustible ordnance material was prepared using a 3D printer, and the curing process of UV-curing resin (acrylic resin) tracked by infrared spectroscopy. The thermal decomposition characteristics photocurable materials were studied DSC, non-isothermal method used to study Kinetic parameters. Meanwhile, delayed ignition time UV-cured at different temperatures tested muffle fu...

The conversion of graphene to graphane is of high importance from a technological and scientific point of view. We present here a scalable method for the hydrogenation of graphene based on thermal exfoliation of graphite oxide in a hydrogen atmosphere under high pressure (60-150 bar) and temperature (200-500 °C). This method does not require a plasma source and is able to produce gram quantitie...

Fires involving materials being stored or processed in bulk can have severe impacts on the local communities and the environment. It is important that site managers at municipal recycling facilities (MRFs) are aware of all the potential fire hazards that exist on their sites in order for them to produce a comprehensive fire safety plan and an effective risk assessment. This article is intended ...

We present a theoretical and experimental study of the fragmentation of closed thin shells made of a disordered brittle material. Experiments were performed on brown and white hen egg shells under two different loading conditions: impact with a hard wall and explosion by a combustible mixture. Both give rise to power law fragment size distributions. A three-dimensional discrete element model of...

This paper deals with a standard classification procedure for readily combustible solids and their assignment to the relevant packing groups according to international air-cargo legislation and regulations. The current International Air Transport Association and United Nations Orange Book regulations were used on chemically similar substances: hexamethylenetetramine and Dancook ignition briquet...

In the light weight, high weather resistance and environmental protection requirements of panel used for motorhome, aluminum honeycomb composite, new material with mature quality improvement upgrading motorhome. this paper, existing problems motorhome properties composite are discussed, advantages applying to board analyzed. The application materials motorhomes will meet improving panels, such ...

A process of conversion of solid carbonaceous fuel into combustible gas by partial combustion is known as gasification. The resulting gas, known as producer gas, is more versatile in its use than the original solid biomass. In the present study, a downdraft biomass gasifier is used to carry out the gasification experiments with the waste generated while making furniture in the carpentry section...

The temperature of a combustible material will rise or even blow up when a heat source moves across it. In this paper, we study the blow-up phenomenon in this kind of moving heat source problems in two-dimensions. First, a two-dimensional heat equation with a nonlinear source term is introduced to model the problem. The nonlinear source is localized around a circle which is allowed to move. By ...