Since 2000 there has been an on-going industrial transition to replace long-chain perfluoroalkyl carboxylic acids(PFCAs), perfluoroalkane sulfonic acids (PFSAs) and their precursors. To date, information on these replacements including their chemical identities, however, has not been published or made easily accessible to the public, hampering risk assessment and management of these chemicals. ...

Cottage industries comprise a sub-group of informal sector income generation activities which are conducted in the home environment and organized around families or households. Cottage industry workers may be at risk of exposure to harmful substances associated with their work, and given the lack of separation of cottage industry activities from living spaces, their families and neighbors may s...

The NSERC Strategic Grant project, with industrial co-funding from Rio Tinto Alcan and in kind support from Environment Canada, awarded to Dr. Chris Wood (McMaster University) and Dr. Jim McGeer (Wilfrid Laurier University) has officially started in September. The project is titled “Development of a Tissue Residue Approach for Risk Assessment of Metals in the Canadian Freshwater Environment. Th...

A palladium composite membrane was prepared by electroless plating on oxidized porous stainless steel support (ox-PSS). Hydrogen permeation flux through this composite membrane was measured in the temperature range of 574-674K and the pressure difference of two sides of membrane up to 90kPa. A simplified resistance model was employed to analyze the permeation behavior of hydrogen through Pd/ox-...

This report, prepared by the Center for Competitive Analysis of the University of Missouri Outreach and Extension (UO/E), provides an overview of some important aspects of the Sheet Metal Work industry (“sheet metal industry”), Standard Industrial Classification (SIC) code 3444. Its primary intended audiences are UO/E, which may consider educational programming designed to assist business owner...

The metal fmishing industry uses over 40 production processes to produce a wide range of metal products. Waste streams generated include wastewater, waste oils, spent solvents, and spent process solutions. Current1,v a wide variety of techniques which minimize waste are available. Cost-effective methods to reduce electroplating wastewater contamination include water conserv&ion and drag-out red...

The purpose of our research project is to develop a “clean interface” between design and fabrication facilities for the production of custom machined parts. The research accomplishments are summarized: 1.Creation of a new format for data exchange, NCML (Numerically Controlled Markup Language), 2. Development of three prototype systems to illustrate how NCML can be effectively used to conduct E-...

The nature of trace element carriers contained in sewage and combined sewer overflow (CSO) was investigated by TEM-EDX-Electron diffraction and SEM-EDX. During dry weather, chalcophile elements were found to accumulate in sewer sediments as early diagenetic sulfide phases. The sulfurization of some metal alloys was also evidenced. Other heavy metal carriers detected in sewage include metal allo...

A stable Zn metal electrode can develop rechargeable zinc batteries (RZMBs) which have the high theoretical capacity (820 mAh g ?1 ), low redox potential, and intrinsic safety. However, corrosion of in aqueous electrolytes dendrite formation during plating process lead to poor cycling thus hinder development RZMBs. Here, we employed ionic liquid-based gel polymer (poly(vinylidene fluoride)-co-h...

Die performance and its service life is a non-trivial issue in metal forming industry as many factors in die life cycle from design, fabrication, to downstream service, all affect it. In this report, a simulation-based approach for die life estimation and improvement is developed by employing the FEM technology and metal fatigue theory. Using industrial part as case study, the validity, robustn...