Search results
Results From The WOW.Com Content Network
When addressing minor repairs and minimal cleaning of objects containing bone, antler, or horn, there are some methods/products that are avoided. [17] Liquid-based cleaners or detergents used to clean surface dirt and dust can damage the objects. Over-the-counter adhesives used to repair cracks and breaks can stain and become brittle over time.
In major injuries, the repair mechanisms are unable to restore the skin to its original condition. The repaired region contains an abnormally large number of collagenous fibers, and relatively few blood vessels. Damaged sweat and sebaceous glands, hair follicles, muscle cells, and nerves are seldom repaired.
Insects that like to eat protein based material will often feed on feathers causing serious damage including loss of feather material, burrowed or grazed surfaces, and frass. The most common threats come from the carpet beetle, hide beetles, larder beetles and clothing moths. [8]
Overpaint and surface coatings can be removed either mechanically or with the use of solvents. Mechanical removal of overpaint include physical techniques to remove the coating from the surface. On a glazed surface a sharp needle or scalpel can be used. If mechanical removal is not possible without damaging the surface, solvents can be used ...
These repairs are difficult and the use of poor adhesives can result in staining of the ivory and embrittlement as the adhesives age. [9] Breaks and cracks can be important historically and show its use of the object. Unnecessary repairs can result in the loss of that historical information. Contact a conservator before any structural repairs ...
Support surface is any material, such as a mattress, that supports people who are bed-ridden through illness. [1] Research and development of appropriate support surfaces can alleviate some of the complications of immobility, such as bedsores and respiratory problems.
A laminar flow cabinet blows unfiltered exhaust air towards the worker and is not safe for work with pathogenic agents, [2]: 13 [3] while a fume hood maintains negative pressure with constant exhaust to protect the user, but does not protect the work materials from contamination by the surrounding environment.
Pressure ulcers can trigger other ailments, cause considerable suffering, and can be expensive to treat. Some complications include autonomic dysreflexia, bladder distension, bone infection, pyarthrosis, sepsis, amyloidosis, anemia, urethral fistula, gangrene and very rarely malignant transformation (Marjolin's ulcer – secondary carcinomas in chronic wounds).