quantitative analysis of the light stability of insoluble singlet oxygen sensitizers

evaluation of insoluble sensitizing materials for further technological development must include tests of their energy transfer efficiency as well as of their light stability. a procedure for the determination of the light stability of insoluble sensitizer particles including the preparation of surfaces to be irradiated and analyzed is gi..

chemicals and textiles - part i: dermatological problems related to fiber content and dyes

this literature review traces the occurrence of dermatological problems caused by textile fibers and dyes, with the focus on consumer rather than occupational exposure. wool, silk, nylon, fiberglass, spandex, and rubber have a role in cumulative insult, allergic contact, atopic, or contact urticaria dermatitis. thirty-one dyes, mainly dis..

na** $plus$ and li** $plus$ nasicon superionic conductors thick films

for microionic applications, superionic conductors have been elaborated in the form of thick films, using silk-screen printable powders. na//3zr//2si//2po//1//2, na//3//. //1zr//1// //5//5si//2//. //3p//0//. //7o//1//1 and li//0//. //8zr//1// //8ta//0//. //2(po//4)//3 compositions are synthesized by a sol-gel process involving hydrolysis-..

proceedings of the industrial waste conference, 38th, 1983

this conference proceedings contains 93 papers. the sessions include: oil wastes; land disposal; paper wastes; agricultural wastes; animal wastes; pharmaceutical wastes; textile wastes; hazardous/toxic wastes; metal wastes; plating wastes; chemical wastes; coal, coke, power plant wastes; physical/biological systems; and food wastes. sever..

minicore press

minicoring is a sampling procedure that may increase precision and reduce costs in testing australian greasy-wool clip before sale greasy corings are packed into a box and subjected to a high compressive stress while large numbers of 2-mm-diameter subcorings are taken to form a highly representative sample. this material has been used ext..

ultraviolet curing and screen decorating

silk screen printing, screen process printing, stencil printing, serigraphy or mitography, all describe a printing process in which ink is forced through a woven mesh in a selective manner to produce a controlled image, repeatedly. screen printing is the basis for a highly technical, financially significant, rapidly growing and changing i..

veraendern tenside die reaktivitaet der wolle? $left bracket$ do tensides alter the reactivity of wool? $right bracket$

in the reported experiments, wool fibers have been treated with anion and cation tensides of varying chain length of the hydrophobic residue and at differing concentration under dyeing conditions close to actual practice at various ph values and at boiling temperature the hydrolytic alterations in the wool caused by tensides under the tre..

container decoration: evaluating the options

the most popular container-decorating methods are reviewed including glue-applied paper labels, silk-screen printing, heat-transfer decorating, pressure-sensitive labels, thermoplastic labeling and direct lithography. the author summarizes the eye appeal and functional characteristics each of these methods provides also included is a desc..

factors influencing the quality of solder powder used in solder pastes for thick film circuits, printed circuitboards and the electronics industry in general

the purpose of this report is to present an analysis of factors affecting the quality of solder powder used in solder paste systems these systems, used in hybrid microelectronics, are applied to complex thick film cirucits using 'silk' screen techniques common to the industry. the report deals with actual results and recommendations conce..

fire resistant films for aircraft applications

alternative sandwich-panel decorative films were investigated as replacements for the polyvinyl fluoride currently used in aircraft interiors. candidate films were studied for flammability, smoke emission, selected toxic gas emission, flame spread, and suitability as a printing surface for the decorative acrylic ink system. several of the..