Historical approaches[ edit ] Although the word "acculturation" was coined by J. Powell in the earliest record of acculturation can be found in Sumerian inscriptions from B.
November 12, U Austest Laboratories now offers UV testing of components and plastics for lightfastness, colourfastness, and photostability in a new Xenon Arc chamber reproducing the entire spectrum of sunlight, including ultraviolet UVvisible light and infrared IR from nm to nm. The chamber includes moisture through water spray, humidity and temperature conditioning for accelerated life testing of plastics and components.
In a few days or weeks, our UV tester can reproduce the damage caused by full-spectrum sunlight and rain that occurs over months or years in the field and is suitable for exposing large, three-dimensional parts or components.
Predicting diffusion of four products decide between our Xenon Arc chamber or our Short-Wave Weathering Tester for your specific requirements, refer to this article.
Contact Austest Laboratories for a quote. IEC Simulation of the effects of solar radiation on products AATCC TM16 Colorfastness to Light This test method provides the general principles and procedures which are currently in use for determining the colorfastness to light of textile materials.
Xenon Lamp Exposure This test method provides the procedure for the exposure of textile materials of all kinds, including coated fabrics and products made thereof, in an artificial weathering apparatus using controlled conditions of test.
ASTM C Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus This practice covers three types of laboratory weathering exposure procedures for evaluating the effect of actinic radiation, heat, and moisture on sealants.
ASTM C Standard Test Method for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering Procedures This test method covers the method for the determination of the durability of a sealant based on its ability to function in cyclic movement maintaining adhesion and cohesion after repeated exposure to laboratory accelerated weathering procedures.
ASTM C Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants This test method covers a laboratory procedure for determining the effects of accelerated weathering on cured-in-place elastomeric joint sealants single- and multi-component for use in building construction.
ASTM D Standard Test Method for Failure End Point in Accelerated and Outdoor Weathering of Bituminous Materials This test method covers the use of a spark generating apparatus for determination of failure due to cracking of bituminous materials undergoing accelerated or outdoor weathering on electrically conductive backings.
ASTM D Standard Practice for Evaluating the Relative Lightfastness and Weatherability of Printed Matter This standard describes procedures for the determination of the relative lightfastness and weatherability of printed matter under the following conditions, which involve exposure to natural daylight or accelerated procedures in the laboratory.
The test methods included are listed in. Where more than one test method is listed for the same characteristic, no attempt is made to indicate superiority of one method over another.
Selection of the methods to be followed must be governed by experience and the requirements in each individual case, together with agreement between the purchaser and the seller. Polymers consist of homopolymer, copolymers, and elastomer compounded with or without the addition of impact modifiers ethylene-propylene rubber, polyisobutylene rubber, and butyl rubbercolorants, stabilizers, lubricants, or reinforcements.
ASTM D Standard Specification for Poly Vinyl Chloride Sheet Roofing This specification covers flexible sheet made from poly vinyl chloride resin as the primary polymer intended for use in single-ply roofing membranes exposed to the weather.
ASTM D Standard Practice for Xenon-Arc Exposure of Plastics Intended for Indoor Applications This practice covers specific procedures and test conditions that are applicable for exposure of plastics in window glass-filtered xenon-arc devices in accordance with Practices G and G for evaluating the stability of plastics intended for use in indoor applications.
Standard Specification for Liquid Applied Acrylic Coating Used in Roofing This specification covers liquid-applied water-dispersed acrylic latex elastomeric protective roof coatings.
Standard Specification for Polyolefin-Based Plastic Lumber Decking Boards This specification covers polyolefin-based plastic lumber products for use as exterior residential decking boards.
ASTM D Standard Practice for Exposure of Adhesive Specimens to Artificial Light This practice covers the basic principles and operating procedures for ultraviolet UV light aging with or without water of adhesive bonded joints having at least one glass or transparent adhered, using fluorescent UV see Method A or xenon-arc light sources see Method B.
ASTM D Standard Test Methods for Rubber Property—Staining of Surfaces Contact, Migration, and Diffusion These test methods cover techniques to evaluate three types of staining that rubber may cause when in contact with, or in proximity to, another surface that may be light colored. ASTM G Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials This practice covers the basic principles and operating procedures for using xenon arc light and water apparatus intended to reproduce the weathering effects that occur when materials are exposed to sunlight either direct or through window glass and moisture as rain or dew in actual use.
GM P Procedures for Laboratory Accelerated Exposure of Automotive Materials These procedures are used to determine the resistance to degradation of automotive materials when subjected to artificial light sources.
It describes exposures to sunshine carbon arc, xenon arc, fluorescent ultraviolet light and condensation apparatus, and a twin carbon arc. Colour fastness to artificial light: Colour Fastness to Artificial Weathering:Properties and Uses of Steelmaking Slag Steelmaking slag is an integral part of the steelmaking process.
It is produced during the separation of the liquid steel from impurities in steelmaking furnace and is a non-metallic by-product of steelmaking process. Four Products: Predicting Diffusion () Case Solution, This Case is about ANALYTICS PUBLICATION DATE: November 16, PRODUCT #: HCB-ENG An updated "Four Products" instance.
This variation contain. Four Products: Predicting Diffusion Sliced peanut butter L-low complexity, just unwrap and put on T-very high divisibility, anyone can try it A-relative advantage is low, applying peanut butter isn’t that big of a problem C-pretty high compatibility, anyone who makes PBJ would simply buy th.
Quotes. What information consumes is rather obvious: it consumes the attention of its recipients. Hence a wealth of information creates a poverty of attention, and a need to allocate that attention efficiently among the overabundance of information sources that might consume it.
Four Products Predicting Diffusion Harvard Case Study Solution and Analysis of Case Study Solution & AnalysisIn most courses studied at Harvard Business schools, students are provided with a case study.
Major HBR cases concerns on. Explore research at Microsoft, a site featuring the impact of research along with publications, products, downloads, and research careers.