منابع مشابه
Purification of Wax Additives
Ethoxylated waxes and high molecular weight alcohols can be synthesised from synthetic waxes. The conversions in these syntheses are generally low. A purification process is thus required to ensure good utilization of the reagents and a high purity of the products. Due to the fact that these components are not stable at high temperatures, conventional separation methods are not suitable. Superc...
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We present a physically-inspired model of wax crayons, which synthesizes drawings from collections of userspecified strokes. Paper is represented by a height-field texture, and a crayon is modelled with a 2D mask that evolves as it interacts with the paper. The amount of wax deposition is computed based on the crayon contact profile, contact force, and friction. Previously deposited wax is smea...
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Three-dimensional anatomical models have long been essential to the learning of science and lend a sense of ?control? to those practicing in the field. As the development of embryology [4] grew in importance during the late 1800s, so did the need for models to show intricate details of embryos. Embryologists such as Wilhelm His [5], Ernst Haeckel [6], and Oscar Hertwig all initially constructed...
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We report a simple, low-cost and detachable microfluidic chip incorporating easily accessible paper, glass slides or other polymer films as the chip materials along with adhesive wax as the recycling bonding material. We use a laser to cut through the paper or film to form patterns and then sandwich the paper and film between glass sheets or polymer membranes. The hot-melt adhesive wax can real...
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Bone wax is an inert, malleable material used as a hemostatic agent in treating surgical defects. Healing by secondary intention is an appropriate approach for certain situations in dermatologic surgery. When surgical wounds are deep enough for such tissues as bone or cartilage to be exposed, dressings may adhere to granulation tissue, making removal and subsequent wound care difficult and pain...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1883
ISSN: 0036-8733
DOI: 10.1038/scientificamerican09011883-6383supp