Patch test series may miss cosmetic allergens.
HERSHEY, PA. -- Patch testing with personal cosmetic products or topical prescriptions may identify allergens that are not found on common series in patients with suspected allergic contact dermatitis to cosmetics, Erin M. Warshaw, M.D., said at a meeting on contact dermatitis sponsored by Pennsylvania State University. ...

The boundary dynamic.
THE USE OF adhesive in the production of an automobile promises to make both the product and the process more efficient. Both weight and operations can be reduced. In practice, however, steel and other metallic surfaces are often contaminated by process lubricants. A durable bond depends on the ability...

Number inside symbol doesn't mean item is recyclable.
Byline: RECYCLING By Sarah Grimm For The Register-Guard Plastics recycling is a major mystery for most. Why is the lid not recyclable when it's marked with the same number as the tub? Why are bags recyclable curbside one day and not the next? The following...

In the green: building with an environmental conscience.
[ILLUSTRATION OMITTED] As many give more focus to the environment, the dance world has taken the phrase "building for a better future" quite literally. Green dance complexes are springing up with a dual commitment towards dance and environmental awareness. Point Park University hopes their new...

Melamine and milk.
Byline: Adrian E. Cristobal IT wasn't until the US Food and Drug Administration issued an alert that I realized that "melamine" wasn't a misspelling of a female character in "Gone With the Wind." (My knowledge of chemistry is no more reliable than some Cabinet members' knowledge of...

Antibacterial activity of certain phenolic resins: effect of -OH and -NH- groups on Escherichia-Coli bacteria.
Abstract In the present work, we demonstrate the activity of certain synthesised phenolic resins presenting -OH and NH- groups on Escherichia-Coli bacteria, synthesise was carried with phenols and formaldehyde in catalysed medium. Characterisation of these resins by IR and NMR spectroscopy shows the presence of -C[H.sub.2]- for...

Influence of gluing procedure on rheological properties of laminate elements.
Abstract Influences of conventional hot (CH) and high frequency (HF) gluing on some relevant physical and mechanical properties, and creep at constant load and high humidity have been researched for laminate elements that made from beach peeled veneer. The Standard linear and four-parameter viscoelasticity Burger model were considered. Unknown...

Contact dermatitis? Consider patients' clothing.
BETHESDA, MD. -- Formaldehyde resins found in permanent press clothes may cause some cases of contact dermatitis. "Clinically, you have to have a high index of suspicion whenever anyone comes in with a chronic eczematous rash," Ryan Carlson, D.O., reported at a meeting on contact dermatitis. ...

The ultimate sick building syndrome.
Superheated, volatilized polyvinylidene chloride (PVC), polyethylene, acrylonitrile-butadiene-styrene (ABS), reinforced thermosetting resin pipes (RTRP), office desks, chairs, partitions, telephones, and insulated wire, as well as other plastics, solvents, cleaning agents, heavy metals, asbestos and other chemicals too numerous to begin naming here, were released in huge quantities on September 11,...

Plastics that leave no space unfilled.
Plastics that leave no space unfilled Many cars, planes, tennis racquets and other modern accoutrements come off assembly lines at least partly built with composite materials composed of a plastic reinforced with, say, carbon or glass fibers. These composites often are tougher, lighter, more impact resistant and more...