A 62 yr old woman was initially diagnosed with sarcoidosis until a thoracoscopic biopsy revealed the presence of numerous birefringent particles in fibrotic areas of the centrilobular lung zones. These particles were examined by electron microscopy and X-ray spectrometry and characterized as impure talc. Further inquiry into her occupational history revealed that she had worked from the age of ...

The present study estimated area concentrations of airborne benzene in several workshops using Bayesian methods based on available historical measurements. A rubber products factory utilizing benzene was investigated. Historical measurements of benzene concentrations, expert experiences, and deterministic modeling were utilized in a Bayesian Method to estimate area concentrations. Historical co...

A petrochemical worker with aplastic anemia was referred to our hospital. He worked in a petroleum resin-producing factory and had been exposed to low-level benzene while packaging the powder resin and pouring lime into a deactivation tank. According to the yearly environmental survey of the working area, the airborne benzene level was approximately 0.28 ppm. Exposure to benzene, a common chemi...

Near-infrared spectroscopy in diffuse reflection mode was used to evaluate the apparent viscosity of Para rubber field latex and concentrated latex over the wavelength range of 1100 to 2500 nm, using partial least square regression (PLSR). The model with ten principal components (PCs) developed using the raw spectra accurately predicted the apparent viscosity with correlation coefficient (r), ...

In this commentary, the process performance of natural rubber processing wastewater systems was evaluated and compared. The key factors evaluated in here comprised the following: the type of wastewater, the prevention of system clogging by coagulated rubber, and the reduction of greenhouse gas (GHG) emissions. This commentary examined these variables in existing systems and in a pilot-scale rea...

Residents in Ogan Komering Ulu (OKU) Regency on average have a livelihood as rubber farmers. The phenomenon that appears OKU today is there are still many farmers who sell their to middlemen around the factory. This of course interesting study, because factories were established aimed at helping terms marketing rubber. problem raised this study what factors affect factory, especially those midd...

In this commentary, the process performance of natural rubber processing wastewater systems was evaluated and compared. The key factors evaluated in here comprised the following: the type of wastewater, the prevention of system clogging by coagulated rubber, and the reduction of greenhouse gas (GHG) emissions. This commentary examined these variables in existing systems and in a pilot-scale rea...

The production of rubber products involves a mixture of complex chemicals (about 500) grouped' into various functional categories (I). The workers are accordingly exposed to these chemicals besides noise exceeding 85 dB. The effect of this workplace environment on central nervous system particularly the sensory and cognitive functions has not been w-,<II documented. In this connection we conduc...

’ This paper reports the results of a mortality study of workers employed at an East London asbestos factory. The factory opened in 1913, at first producing chiefly asbestos textiles, but later, producing also insulation materials, particularly asbestos pipe sections and a variety of other products. Crocidolite asbestos was used until the late 1950s but also chrysotile and amosite. Both men and...

This is a study of workers at a friction materials factory founded in 1898. Crocidolite was used only during two well defined periods before 1945. Apart from this, only chrysotile asbestos has been used. The mortality study dates from 1942 and extends to 1979. Over 99% of the population have been traced. Ten deaths from mesothelial tumours occurred. An analysis contrasting the observed number o...