Syndite is a composite material which combines the hardness, abrasion resistance and thermal conductivity of diamond with the toughness of tungsten carbide . Applications cutting tools for machining a wide variety of abrasive materials wear part applications Advantages improved life of the tool, or wear part improved process reliability improved frictional behaviour Grades Syndite is produced in five standard grades CTB002 CTC 002 CTB010 CTB025 CTH 025 The numbers refer to the average dimensions in micrometres of the starting diamond material. The designation CTB indicates standard Polycrystalline diamond PCD products, whereas CTC and CTH indicate modified PCD grades. Syndite CTB010 may, in most cases, be regarded as the general purpose grade. Sources http www.e6.com e6 page.jsp?pageid 400401010 Syndite br Category Superhard materials ... more details
Orphan date February 2009 Unreferenced date October 2008 Infobox Album See Wikipedia WikiProject Albums Name The Chemical Window EP Type EP Artist Blind With Rain Cover The Chemical Window.jpg Released 2005 Length 34 53 Genre Industrial music Industrial The Chemical Window EP is the first EP released by the band Blind With Rain . Track listing All tracks written by Aaron Geis. Reduction Seduction 4 46 Invade Saturate Dent 4 16 The Chemical Window 4 34 Abrasion 4 15 Anything At All 1 38 Affliction 4 16 It Took Me So Long 7 17 The Chemical Window edit 3 52 DEFAULTSORT Chemical Window, The Category Industrial albums Category 2005 EPs ep stub ... more details
Multiple issues orphan August 2009 unreferenced September 2009 Surfaced Block is a generic term used to describe concrete masonry units with durable, slick surfaces designed to provide resistance to frequent scrubbing and cleaning, graffiti , chemical exposure, moisture, impact, and abrasion. Common Types Common types of Surfaced Block include Glazed Block, Tile Faced Block, Sealed Ground Face Block, and Polyurethane Coated CMU. Typical Usage Surfaced Block is found primarily in areas where a sanitary environment is required. Food and Beverage Factory manufacturing plants , hospitals, Pharmaceutical manufacturing plants, Restaurants, Public Facilities, and schools use this type of construction material. DEFAULTSORT Surfaced Block Category Building materials Category Masonry material stub ... more details
Malin Valley is an upland valley on the west side of Mount Cerberus in east Olympus Range , McMurdo Dry Valleys . The valley opens north to Victoria Valley . Named by Advisory Committee on Antarctic Names US ACAN 2004 after Michael C. Malin , Department of Geology, Arizona State University United States Antarctic Program USAP abrasion rate observations in the McMurdo Dry Valleys, 1983 84 to 1993 94. usgs gazetteer coord 77 26 S 161 47 E display title Category Valleys of Victoria Land Category McMurdo Dry Valleys McMurdoDryValleys geo stub ... more details
, 1984, p. 97. ISBN 0 14 051094 X. ref The slope is constantly being eroded. Waves run up the abrasion ... by constant abrasion action producing an overhang. This overhang grows in size as the cliff is undercut ... inland. At the same time the abrasion platform grows in size. The speed at which this happens ... year. If there is a Tectonics tectonic uplift of the coast, these abrasion platforms can be raised ... more details
Other uses Polish disambiguation Polishing is the process of creating a smooth and shiny surface by rubbing it or using a chemical action, leaving a surface with a significant specular reflection still limited by the index of refraction of the material according to the Fresnel equations . ref Citation title Polish url http www.answers.com polishing accessdate 2008 01 04 . ref In some materials such as metals, glasses, black or trasparent stones polishing is also able to reduce diffuse reflection to minimal values. When an unpolished surface is magnified thousands of times, it usually looks like mountains and valleys. By repeated abrasion, those mountains are worn down until they are flat or just small hills. The process of polishing with abrasive s starts with coarse ones and graduates to fine ones. Polishing with very fine abrasive differs physically from coarser abrasion, in that material is removed on a molecular level, so that the rate is correlated to the boiling point rather than to the melting point of the material being polished. Types Metalworking main Polishing metalworking Other polishing processes include Burnishing metalworking Burnishing Mass finishing Tumble finishing Vibratory finishing Sodablasting Woodworking French polishing Wood finishing Other Chemical mechanical polishing , which is used in semiconductor fabrication Fabrication and testing of optical components Flame polishing , a type of polishing used on glass and thermoplastics Ultra fine, abrasive paste polishing , polishing for soft or fragile work surfaces Vapor polishing , a method of polishing plastics to optical clarity References reflist External links wiktionary Category Decorative arts Category Grinding and lapping Category Industrial processes Category Wood finishing techniques az Cilalama cs Le t n de Polieren fr Polissage ko it Lucidatura he kk ms Penggilapan nl Polijsten bewerking ja pl Polerowanie pt Polimento ru sv Polering uk ... more details
Attenuated patella alta is an extremely rare condition affecting mobility and leg strength. It is characterized by an unusually small knee cap patella that develops out of and above the joint . Normally, as the knee cap sits in the joint, it is stimulated to growth by abrasion from the opposing bones. When not situated properly in the joint, the knee cap does not experience such stimulation and remains small and undeveloped. Note that the cartilage under and around the kneecap is eight times smoother than ice, so abrasion may not be the best term. A similar condition, patella alta, can occur as the result of a sports injury, though the large majority of the time it is a congenital developmental condition that is unrelated to trauma. A kneecap in an alta position sits above the trochlear groove and therefore is less stable. The patellar tendon that connects the kneecap to the tibia shinbone is elongated longer than normal . This cannot happen by way of trauma, unless there has been a rupture of the tendon and a less than optimal surgical repair. There has been only one documented case of the disorder noted from birth. In 1988, three year old Eric Rogstad of Minneapolis, Minnesota was discovered to suffer from the condition in both knees after several attempts by his parents and family physician to discover the cause of his abnormal difficulties with walking and running . After surgery and physical therapy , Eric gained the ability to walk and run without significant difficulty. Insall Ratio This ratio is calculated with the knee flexed to 30 degrees. It is the ratio of the length of the patella to the length of the patellar tendon. Normally this ratio is 1 1 but 20 variation represents patella alta or patella baja. Actually, the Insall Salvati ratio can be measured at any degree of flexion, which is one reason for its popularity. ref Grelsamer, RP Patellar Malalignment Current Concepts. J Bone Joint Surg. 82A 1639 1650, 2000 ref See also Patella References reflist Ca ... more details
Other uses Unreferenced date January 2008 Image Baseboard.jpg thumb 250px An example of baseboards In architecture , a baseboard also called skirting board , skirting , mopboard , floor molding , as well as base molding is a generally wooden lumber board covering the lowest part of an interior wall . Its purpose is to cover the joint between the wall surface usually plaster or drywall and the floor. It covers the uneven edge of flooring next to the wall protects the wall from kick s, abrasion mechanical abrasion , and furniture and can serve as a decorative molding. At its simplest, baseboard consists of a simple plank nail engineering nail ed, screw ed or Adhesive glued to the wall however, particularly in older houses, it can be made up of a number of moulding decorative moulding s for decoration. Plastic baseboard is usually available in white or a flexible version in several colors and is generally glued to the wall. Wooden baseboard is available in paint or stain grade versions. Paint grade will not take stain well. Paint grade baseboards can be either raw finger jointed or primed. Stain grade woods such as oak, pine, and maple are clearer and are suitable for staining in natural finishes. Radiators are sometimes installed inside or in front of baseboards baseboard radiators . A baseboard differs from a wainscot a wainscot typically covers from the floor to around 1 1.5m high waist or chest height , whereas a baseboard is typically only 0.2m high ankle height . See also Quarter round Crown molding references Woodworking Category Woodworking Category Floors Category Walls Category Residential heating de Leiste Bauteil el es Rodapi fa fr Plinthe it Battiscopa nl Plint pt Roda p ru ... more details
File Glacial striation 21149.JPG thumb right Glacial striations at Mount Rainier National Park Image Glacial grooves.jpg thumb right 250px Glacial grooves stemming from the Wisconsin glaciation at Kelleys Island, Ohio Glacial striations are scratches or gouges cut into bedrock by glacial Abrasion geology abrasion . Glacial striations are usually multiple, straight, and parallel, representing the movement of the glacier using rock fragments and sand grains, embedded in the base of the glacier, as cutting tools. Large amounts of coarse gravel and boulders carried along underneath the glacier provide the abrasive power to cut trough like glacial grooves , and finer sediments also in the base of the moving glacier further scour and polish the bedrock surface, forming a glacial pavement . Most glacial striations were exposed by the retreat of glaciers since the Last Glacial Maximum or the more recent Little Ice Age . As well as indicating the direction of flow of the glacial ice, the depth and extent of weathering of the striations may be used to estimate the duration of post glacier exposure of the rock. An outstanding example of glacial grooves can be found at the Glacial Grooves at Kelleys Island, Ohio a National Natural Landmark , the most impressive of which is convert 400 ft m long, convert 35 ft m wide, and up to convert 10 ft m deep. These grooves cut into the Columbus Limestone . Striations cover the sides and bottoms of the grooves. External links Commons inline http www.ohiohistory.org places glacial Ohio Historical Society Glaciology stub geomorph stub Category Glaciology Category Erosion cs Souvek da Skurestribe de Kritzung es Estr a glacial fr Strie glaciaire is sr kir it Striatura glaciale ka nl Gletsjerkras no Skuringsstripe pt Estrias glaciais ru sv Isr fflor uk ... more details
NOTOC Wiktionarypar scrape scraped scraper scraping Scrape , scraper or scraping may refer to Medicine Abrasion medical Abrasion , a type of injury Hand tools Card scraper , cabinet scraper or scraper, a tool for scraping wood Hand scraper , a single edged tool used to scrape metal from a surface Scraper archaeology , a stone tool Machines Fresno scraper , powered by an external tractor which pulls it Wheel tractor scraper , a piece of heavy equipment used for earth moving Computing Blog scraping , the process of scanning through a large number of blogs, searching for and copying content Screen scraping , a program which captures information from a display not intended for processing by computers Tracker scrape , request sent to a BitTorrent tracker Web scraping , the actions of a website crawler which assembles content from web pages Scraper site , a website created by web scraping Music and audio Pick slide , also called pick scrape, an electric guitar playing sound effect technique Rake and scrape , a type of Caribbean music Scraper instrument , a musical instrument Scraping album Scraping album , a 2002 rock music album by Calexico Wow and flutter measurement Flutter correction Scrape flutter , in sound recording, high frequency flutter over 100Hz Scrape Blue Stahli song Scrape , a 2009 non album single by Blue Stahli Other Bird nest Scrape Scrape , a type of bird nest Cloud scraper , birds of the genus Cisticola Scraper kitchen , a cooking tool Gourd scraper, also called a pua, a stick used for playing the g iro , an instrument consisting of a hollow gourd Scraper, Oklahoma , a census designated place in Cherokee County, Oklahoma, United States Scraper car , a modified American made family car characterized by large rims and extensive personalization Scratchboard , also called a scraperboard, a technique where drawings are created using sharp knives and tools for etching into a thin layer of white China clay that is coated with black India ink Skyscraper , a bu ... more details
orphan date February 2010 advert date December 2009 Ductal is a proprietary pre mixed ultra high performance concrete whose physical characteristics exceed those of common concrete used in the construction of building s. It is manufactured by Lafarge and Bouygues . Ductal has high compressive strength and flexural resistance compared to other concretes. It also has high durability, abrasion resistance, and chemical environmental resistances e.g. freeze and thaw, salt water, etc. . Due to these properties, Ductal can be used in thinner cross sections and in more varied applications than common concrete. Ductal is almost self placing and is best suited for precast elements or in situ repair or upgrade works. The constituents of Ductal are cement, fine sand, silica fume and silica flour as a filler, additive and water, using a low water cement ratio and may include high strength steel fibres or non metallic fibres. Ductal is a ductile material that possesses ultra high compressive strength, high tensile strength and high durability together with high fatigue performance. It also has excellent impact, blast and abrasion resistance. The type and quantities of special materials used in Ductal result in a superior material that can provide innovative and valuable solutions for a wide range of applications it is not a replacement for ordinary concrete in applications that do not exploit its unique properties and requires performance engineering. class wikitable Ductal Properties Compressive Strength typically 160 230 MPa... compressive strength in excess of 750 MPa recorded see Cyclic loading and Fracture Mechanics of Ductal concrete, Ehab Shaheen and Nigel G. Shrive, Springer Science Business Media B.V.2008, Published online 8 April2008 Flexural Strength 30 50 MPa Young s Modulus E 55 60 MPa Density 2.45 2.55 math t m 3 math External links http www.ductal lafarge.com http vsl.com index.php?option com content&view category&layout blog&id 24&Itemid 110 Category Concrete Cate ... more details
Orphan date November 2006 Oxinium is the brand name of a material used for replacement joint s manufactured by the reconstructive orthopedic surgery division of medical devices company Smith & Nephew . It consists of a zirconium alloy metal substrate that transitions into a ceramic zirconium oxide outer surface. The ceramic surface is extremely abrasion resistant compared to traditional metal implant materials such as cobalt chromium . It also has a lower coefficient of friction against ultra high molecular weight polyethylene UHMWPE , the typical counterface material used in total joint replacements. These two factors likely contribute to the significantly lower UHMWPE wear rates observed in simulator testing. Reducing UHMWPE wear is thought to decrease the risk of implant failure due to osteolysis . All ceramic materials can have a similar effect on reducing wear, but are brittle and difficult to manufacture. The metal substrate of Oxinium implants makes components easier to manufacture and gives them greater toughness a combination of strength and ductility . In essence, this technology combines the abrasion resistance and low friction of a ceramic with the workability and toughness of a metal. This combination of properties led to Oxinium technology being the first ever implant related technology to win the prestigious ASM International Engineering Materials Achievement Award EMAA in 2005. Current competitive reduced wear options in hip replacement total hip arthroplasty THA are ceramic on ceramic, metal on metal, and metal on cross linked polyethylene . The only competitive reduced wear option for knee replacement total knee arthroplasty TKA is metal on cross linked polyethylene. In September 2003, Smith & Nephew recalled its Macrotextured Oxinium Profix and Genesis II knee implants because of reports that 30 people receiving the implants without bone cement had to undergo a replacement surgery after they became loose. ref http business.guardian.co.uk story 0,3 ... more details
Image Glacial Tarn Formation EN.svg thumb right 300px Zone of plucking in the formation of tarns and cirques . Image PluckedGraniteAlandIslands.JPG thumb right 300px Glacially plucked granitic bedrock near Mariehamn, land Islands . cleanup date April 2012 expert subject Geology date April 2012 Plucking is a glacial phenomenon which erodes and transports bedrock. As a glacier moves down the valley, there is friction with the rock floor. This friction causes the basal ice of the glacier to melt and infiltrate joints in the bedrock where it then freezes. As the glacier moves on, the rock now bonded to the glacier, plucked from the bedrock onto the base of the glacier and carried with it. These plucked rocks can also cause abrasion mechanical abrasion against the bedrock and walls. Glacial plucking exploits pre existing fractures in the bedrock. This plays a key role in opening and creating new fractures but has only provided small segments of loose material. This is then followed by the entrainment physical geography entrainment of the loosened rock by the ice. During the process of entrainment, loose rock material is frozen onto the base of the glacier and incorporated into the glacial ice. It is significant when the bedrock is highly jointed, as this allows meltwater to penetrate. Plucking is also known as quarrying. External links http www.homepage.montana.edu geol445 hyperglac eroproc1 animated plucking.gif Plucking animation dead link date February 2012 http www.homepage.montana.edu geol445 hyperglac eroproc1 source article dead link date February 2012 Glaciology stub geomorph stub Category Geology Category Glaciers Category Glaciology Category Erosion glaciers fr Excavation glaciaire it Escavazione glaciale simple Plucking glaciation ... more details
Infobox Disease Name PAGENAME Image Caption DiseasesDB ICD10 K03.0 ICD9 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID D019217 Attrition is the loss of teeth structure by mechanical forces from opposing teeth. Attrition initially affects the tooth enamel enamel and, if unchecked, may proceed to the underlying dentin . Once past the enamel, attrition quickly destroys the softer dentin . Erosion is a very important contributing factor to the loss of tooth substance by attrition. A. Johansson et al. 2008 The most common cause of attrition is bruxism . Functional habits are those such as chewing and swallowing, which usually puts very little force on opposing teeth. Parafunctional habit s, such as clenching and clicking the teeth together nervously, place greater amounts of forces on opposing teeth and begin to wear the teeth. As expected, wear usually begins on the incisal or occlusal surfaces. Characteristic Features Development of a facet flat surface with circumscribed and well defined border . Opposing tooth facets will match perfectly in occlusion. Interproximal Attrition Occurs at proximal surfaces of adjacent teeth when they move against one another on occlusal loading. Movement of teeth is in the vertical direction. See also Abrasion dental Abrasion Abfraction Erosion dental Erosion Bruxism References Neville, B.W., D. Damm, C. Allen, J. Bouquot. Oral & Maxillofacial Pathology . Second edition. 2002. Page 56. ISBN 0 7216 9003 3. Acquired tooth disease Category Acquired tooth disorders dentistry stub zh min nan Chh i kh k s n ja pl Atrycja ... more details
Unreferenced date April 2007 Image ropeburn.jpg thumb Friction burn caused by a rope. Image Thirddegreefrictionburn.jpg thumb Friction burn caused by a treadmill. Example of a third degree friction burn A friction burn is a form of abrasion medical abrasion caused by friction when a person s skin rubs against a surface. It may also be referred to as skinning , wikt chafe chafing , or called by the surface which caused the burn e.g., rope burn or carpet burn . As friction also generates heat , extreme cases of chafing may result in genuine burning of the outer layers of skin. The dermal papillae may be exposed after top layers of the dermis stratum corneum , stratum granulosum , stratum spinosum and stratum basale have been removed. This is often uncomfortable and even painful, but rarely results in bleeding . A person s own skin or the skin of another person may be sufficient to act as an abrasive surface to cause friction burn. More commonly, friction with abrasive surfaces, including clothing, carpet, or rope, can lead to a friction burn. Common places at which skin to skin chafing can occur are between the thighs and under the armpits. A risk of friction burns is infection . Treatments Treatments for friction burns usually involve application of an anti inflammatory cream. Pain relieving medication may also be taken. One of the underlying factors behind abdominal chafing inguinal friction may be obesity, and weight loss may be indicated as a preventive measure. DEFAULTSORT Friction Burn Category Skin conditions resulting from physical factors dermatology stub ... more details
Fluvioglacial landforms are landform s molded by glacier glacial meltwater . This discharge of glacial stream s, both over the surface supraglacial and beneath the ice sheet subglacial , is higher in the warmer summer months. As subglacial water often flows under Water pressure pressure , it has a high velocity and is very Turbulence turbulent . This high velocity enables it to transport a large amount of material which would not normally be transported in a regular stream of similar size boulders thus transported may remain as glacial erratic s in the post glacial terrain. As this material is transported it makes contact with the underside of a glacier and erodes vertically from below by Abrasion geology abrasion . This erosion creates valley subglacial valley s. When there is a decrease in discharge of the glacial steams, Deposition sediment deposition occurs, and is responsible for large groupings of landforms like esker s and drumlin s in glaciated areas. Pro glacial lake s leave their own passive impress on the glaciated landscape, recognizable by the flatness of the former lakebed and Terrace geology raised terrace s that mark former shorelines. More active massive scouring occurs when ice dam s of pro glacial lakes fail catastrophically in a glacial lake outburst flood the results can be seen, for example in the Channeled Scablands in the U.S. state of Washington U.S. state Washington , created by the cataclysmic Missoula Floods that swept periodically across eastern Washington and down the Columbia River Plateau during the Pleistocene Epoch geology epoch . The Shonkin Sag along the northern edge of the Highwood Mountains , Montana, is a channel formed by the Missouri River and glacial meltwater pouring from Glacial Lake Great Falls it is one of the most famous prehistoric meltwater channels in the world. ref Axline, Jon and Bradshaw, Glenda Clay. Montana s Historical Highway Markers. Helena, MT Montana Historical Society , rev. ed. 2008 91. ref Notes Reflist ... more details
Multiple issues orphan February 2009 unreferenced May 2011 advert May 2011 Riverstone Pebble Tiles is a composite material made up of marble pebbles or pieces of natural stone in different sizes, bound together with a transparent white or coloured resin . Manufacture The material is made by adding resin to marble or rock geology stone pebbles laid down on a moulding. One side is polished and the other side is cut. As a result, the polished side becomes slightly undulating, where the resin is lower than the pebbles that come to the surface. This characteristic makes Riverstone an aesthetically pleasant floor and wall covering and substantially improves its functionality and resistance to abrasion mechanical abrasion . The surface of the stones is completely free of paints or resins and it is treated with a waxy water repellent that protects the material from stains and makes it easy to maintain. Properties Riverstone has technical characteristic similar to those of marble and should be treated like marble when cutting, drilling or polishing it. However it can be purchased as slabs or tiles in a variety of different sizes and colours. Uses Natural stones absorb very little liquid and the resin is virtually impervious to liquids therefore Riverstone is suitable for any kind of wall and floor covering including heated flooring as well as kitchen worktops, vanity tops, bar fronts and tops. Riverstone is also translucent and can b backlit Although Riverstone is an extremely versatile material its peculiar look and its high cost makes it an exclusive yet sought after material by architect and designers alike. br Category Composite materials ... more details
Glass engraving is a form of decorative glasswork that involves engraving a glass surface or object. It is distinct from glass art in the narrow sense, which refers to moulding and blowing glass. Glass engraving encompasses a variety of techniques. One notable form is intaglio work, with images and inscriptions cut into the surface of the glass through abrasion mechanical abrasion . Glass engraving tools are therefore small abrasive wheels and drills, with small lathe s often used. Engraving wheels are traditionally made of copper, with a linseed oil and fine emery powder mixture used as an abrasive. Other forms of engraving are stipple and drypoint in which the surface of the glass is abraded with the use of small diamond tipped burrs. The scratches and small dots made in this method can, in the hands of a skilled artist, be used to produce images of astonishing clarity and detail. A notable practitioners of this form is the late Laurence Whistler Lawrence Whistler who began a revival in England. Sandblasting is yet another technique used in glass engraving. Abrasive is sprayed through a sandblasting gun on to glass which is masked up by a piece of stencil in order to produce inscriptions. This engraving technique is typically used by commercial engravers. An example of a relief illusion created from an intaglio cut form can be observed on this bowl engraved by Edmond Suciu, using the techniques of diamond and copper wheel engraving. gallery Image White Horses engraved by Edmond Suciu.jpg White Horses wheel engraved by Edmond Suciu gallery Glass forming Category Glass art Category Engraving glass art stub ja sv Glasgravyr ... more details
unreferenced date February 2010 The Army Combat Boot is the primary issue combat boot of the United States Army , intended for use in conjunction with the Army Combat Uniform . Variants double image right Army Combat Boot Temperate .jpg 200 Army Combat Boot Hot .png 200 Temperate Weather Hot Weather Temperate The Army Combat Boot Temperate Weather ACB TW is a tan colored, temperate weather combat boot with a moisture resistant, rough side out cattlehide leather and nylon duck upper. It contains a waterproof breathable membrane and integrated safety features limited fire , conductive heat , and liquid fuel penetration protection. The sole consists of a three layer, shock absorbing soling system with an abrasion and slip resistant solid rubber outsole. It has a combination eyelet and speed lace lacing system. Hot The Army Combat Boot Hot Weather ACB HW is a tan colored, hot weather combat boot made with moisture resistant, rough side out cattlehide leather and nylon duck upper with two drainage eyelets on the inner arch. The soling system of this boot consists of a three layer, shock absorbing soling system with an abrasion resistant outsole. It has a combination eyelet and speed lace lacing system. See also Mountain Combat Boot Modular Boot System References US Army URL https peosoldier.army.mil newpeo Folio2010 PMSPIE PM CIE HWB.xml External links Category United States Army uniforms Category Military boots ... more details
orphan date October 2008 Ice scour is a geological term for long, narrow ditches in a seabed , created by the collision of fast ice and pack ice and the grounding of iceberg s. Synonyms include ice gouging , ice ploughing , ice score and keel scour . This phenomenon is common along the northern coast of Alaska and in the Bering Sea along its costal waters. It may also refer to ice sheet s in the intertidal , which upon movement of the ice, creates physical abrasion and possible dislodgment of marine organisms. Regions of the seabed reshaped by ice scour have been linked to the formation of black pools, seabed depressions filled with Hypoxia environmental anoxic high salinity water which are death traps for small marine organisms. ref http www.int res.com articles meps 162 m162p001.pdf Black pools of death hypoxic, brine filled ice gouge depressions PDF R.G.Kvitek, K.E.Conlan & P.J.Iampietro, Marine Ecology Progress Series 1998 ref References references Category Glaciology Category Oceanography geomorph stub ocean stub ... more details
TMPTA is trimethylolpropane triacrylate , is a trifunctional monomer used in manufacture of plastic , adhesive , acrylate polymer acrylic glue, anaerobic sealant , Ink is useful in the low volatility and fast cure response. It has the property of resistance against weather, chemical, water and abrasion. End products include alkyd coating s, compact disc s, hardwood floor s, concrete polymer s, dental polymer s, lithography, letterpress , screen printing , elastomer s, automobile headlamps, acrylics and plastic components for the medical industry. Its chemical formula is C15H20O6 with a molecular weight of 296.32 References reflist http chemicalland21.com industrialchem functional 20Monomer TRIMETHYLOLPROPANE 20TRIACRYLATE.htm TRIMETHYLOLPROPANE TRIACRYLATE at chemicalland21.com http www.osha.gov dts chemicalsampling data CH 273975.html Trimethylolpropane Triacrylate at Occupational Safety and Health Administration OSHA http ntp.niehs.nih.gov index.cfm?objectid BD8DA5DC 123F 7908 7B1846717AF01C32 Trimethylolpropane triacrylate CAS Number 15625 89 5 at ntp.niehs.nih.gov Category Polyacrylates sci stub ... more details
MarsGeo name Bounce Rock image Image 58606main image feature 167 jwfull.jpg 200px caption False color composite of Bounce Rock after being drilled by the rock abrasion tool of the Mars Exploration Rover Opportunity type Rock latitude 1.9 N or S S longitude 354.5 E or W E Bounce Rock is a football sized primarily pyroxene rock found on Mars by the Mars Exploration Rover Opportunity rover Opportunity in April 2004. The rock was named for the fact that it was struck by Opportunity as the craft bounced to a stop during its landing stage. Bounce Rock bears a striking resemblance to a class of meteorites found on Earth known as shergottites , that are believed to have originated from Mars. See also List of rocks on Mars External links http mars.jpl.nasa.gov Nasa s Mars Exploration Program Mars stub crater stub Category Rocks on Mars pt Bounce Rock ... more details
Unreferenced date November 2007 Toe tufts are commonly found on cat s with medium to long coats. Clumps of fur that stick out at least 1 2cm beyond the paw pad can be considered tufts. In addition to soft paw pads, toe tufts help a cat to silently stalk its prey by muffling excess noise. However, outdoor cats tend to lose their toe tufts due to excessive abrasion on the rougher outdoor surfaces. This is in stark contrast to indoor cats who spend most of their time walking on carpet or smooth floors. Although toe tufts do not cause additional hairball s in cats, it does make some aspects of hygiene a bit more difficult. For example, cat litter, dirt and other particulates may stick to toe tufts and cause the cat some discomfort. Therefore, a cat with extra long toe tufts should be checked regularly for tangles and taken in for Personal grooming grooming . Category cats Category fur cat stub ... more details
Erosion corrosion is a degradation of material surface due to mechanical action, often by impinging liquid, abrasion by a slurry, particles suspended in fast flowing liquid or gas, bubbles or droplets, cavitation , etc. The mechanism can be described as follows mechanical erosion of the material, or protective or passive oxide layer on its surface, enhanced corrosion of the material, if the corrosion rate of the material depends on the thickness of the oxide layer. The mechanism of erosion corrosion, the materials affected by it, and the conditions when it occurs are generally different than that of flow accelerated corrosion , although the last one is sometimes classified as a sub type of erosion corrosion. Surface chemistry can play a role in erosion corrosion due to Mechanochemistry mechanochemical effects. Erosion corrosion is the second most common cause of Erosion corrosion of copper water tubes copper tube failure . See also Were Tribology Tribocorrosion References Reflist unsourced date November 2011 Further reading Alan Levy, Solid Particle Erosion and Erosion Corrosion of Materials , ASM International, 1995. Category Engineering mechanics Category Corrosion Category Materials degradation engineering stub ... more details
multiple issues unreferenced February 2009 orphan February 2009 Cold shrink tubing is an open ended Synthetic rubber rubber sleeve, made primarily from rubber elastomers with high performance physical properties , that has been factory expanded or pre stretched, and assembled onto a supporting removable plastic core. Cold shrink tubing shrinks upon removal of the supporting core during the installation process and the electrician slides the tube over the cable to be terminated and unwinds the core, causing the tube to collapse down, or contract, in place. Cold shrink tubing is used to insulate wires, connections, joints and terminals in electrical work. It can also be used to repair wires, bundle wires together, and to protect wires or small parts from minor abrasion. See also Heat shrink tubing Electrical wiring DEFAULTSORT Cold Shrink Tubing Category Electronics work tools Category Plastics applications ... more details
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