A report of the gross and microscopic appearances in the lungs and the weights of the cardiac ventricles in 43 subjects receiving industrial benefit for byssinosis is presented. In 27 (63%) there was no significant emphysema, in 10 (23%) there were varying amounts of centrilobular emphysema, and panacinar emphysema was found in six (14%). Other changes were of non-specific nature, but most case...

The design of industrial and municipal incinerators is based on combustion and heat considerationsl The procedures are given for calculating the quantities of air, flue gas, water and heat, as well as the gas temper­ atures. To assist the reader, a municipal incinerator is used as an example. The relation between refuse analysis and flue gas analysis is explained. Sections on dry and wet dust c...

At the Ninth International Congress on Industrial Medicine Policard (1948) reported the production of granulomata in the lungs of rats and guinea-pigs by dusting with beryllium oxide. Details of the particle size of the dust were not given. Policard claimed that hyperplasia of the mesenchymatous cells of the lung after dusting with beryllium oxide resulted in three types of response (1) histioc...

In a mill spinning coarse cotton the prevalence of byssinosis and other respiratory symptoms, and the F.E.V.1.0, were measured in a group of 29 men and I117 women employed in the winding room. All the men and 95% of the women at risk were included. Dust concentrations, measured with a modified Hexhlet at various work points in the winding room, ranged from i-65 to 6 o5 mg. Jm.3 total dust. Thes...

Our aim was to measure the levels of exposure to wheat flour dust in a modern industrial bakery, and to assess the relationship between respiratory symptoms, sensitization to wheat flour antigens and airway responsiveness in the workforce. Forty four flour-exposed male workers and 164 unexposed controls were examined. Inspirable dust concentrations were measured using personal samplers. Respira...

We use measurements and models to develop aerosol models for use in the inversion algorithms for the Cloud Aerosol Lidar and Imager Pathfinder Spaceborne Observations (CALIPSO). Radiance measurements and inversions of the AErosol RObotic NETwork (AERONET ) are used to group global atmospheric aerosols using optical and microphysical parameters. This study uses more than 10 records of radiance m...

In this paper an optical system for measuring the amount of dust deposition on commercial bag filters is presented. Dust laden gas is blown onto the filter, the dust remains on the surface and forms a compact layer called filter cake. For academic simulations as well as practical filter design it is desirable to know the thickness of this cake over the filter surface during operation, when the ...

A multicenter case-control study was conducted during 1999-2002 in four European countries (Poland, Romania, Russia, and Slovakia) to evaluate the role of occupational exposures in risk of laryngeal/hypopharyngeal cancer. Male cancer cases (34 hypopharyngeal, 316 laryngeal) with full data on occupational history and nonoccupational factors were compared with 728 hospital controls for occupation...

Polychlorinated biphenyls (PCBs) and dioxins are well known for their persistence in the environment. PCBs can be found in the residential environment long after the use of these chemicals in domestic products and industrial processes has ceased. Dioxins have been assessed in Australia as being of very low concentrations. Despite concerns about residential dust as a source of human exposure to ...

The paper discusses some challenges in aerosol-climate modelling. CAM-Oslo, extended from NCAR-CAM3, employs an aerosol module for sea-salt, dust, sulphate, black carbon (BC) and particulate organic matter (OM). Primary aerosol size-distributions are modified by condensation, coagulation and wet-phase processes. Aerosol optics and cloud droplet numbers use look-up tables constructed from first ...