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Zylon
Zylon ( IUPAC name: poly(''p''-phenylene-2,6-benzobisoxazole)) is a trademarked name for a range of thermoset liquid-crystalline polyoxazole. This synthetic polymer material was invented and developed by SRI International in the 1980s and manufactured by Toyobo. In generic usage, the fiber is referred to as PBO. Zylon has 5.8 GPa of tensile strength, which is 1.6 times that of Kevlar. Additionally Zylon has a high Young's modulus of 270 GPa, meaning that it is stiffer than steel. Like Kevlar, Zylon is used in a number of applications that require very high strength with excellent thermal stability. Tennis racquets, table-tennis blades, snowboards, various medical applications, and some of the Martian rovers are some of the better-known instances. Usage Body armor Zylon gained wide use in U.S. police officers body armor protection in 1998 with its introduction by Second Chance Body Armor, Inc. in its "Ultima" and "Ultimax" protective vests. Protective vests const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Chance (body Armor)
Second Chance is an American body armor manufacturing company that was the first firm to use kevlar for body armor. The company was founded in the early 1970s by former U.S. Marine and pizza delivery owner/driver Richard Davis. Davis developed the idea of a bulletproof vest after shooting three armed robbers in self-defense during a delivery. This incident was later documented in a 1995 book written by firearms instructor Massad Ayoob called ''The Ayoob Files: The Book''. Davis started his company out of his garage. In early sales demonstrations, he would put on one of his vests and then shoot himself, usually with a firearm provided by whatever agency he was demonstrating for. In 1998, Second Chance introduced Zylon-based body armor (bullet-resistant vests), as a lightweight alternative to kevlar. The Zylon material used in the vests was supplied by Japan-based Toyobo. In June 2005, the National Institute of Justice, the United States government agency responsible for develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Body Armor
Body armor, also known as body armour, personal armor or armour, or a suit or coat of armor, is protective clothing designed to absorb or deflect physical attacks. Historically used to protect military personnel, today it is also used by various types of police (riot police in particular), private security guards or bodyguards, and occasionally ordinary civilians. Today there are two main types: regular non-plated body armor for moderate to substantial protection, and hard-plate reinforced body armor for maximum protection, such as used by combat soldiers. History Many factors have affected the development of personal armor throughout human history. Significant factors in the development of armor include the economic and technological necessities of armor production. For instance full plate armor first appeared in Medieval Europe when water-powered trip hammers made the formation of plates faster and cheaper. At times the development of armor has run parallel to the deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballistic Vest
A bulletproof vest, also known as a ballistic vest or a bullet-resistant vest, is an item of body armor that helps absorb the impact and reduce or stop penetration to the torso from firearm-fired projectiles and fragmentation from explosions. The vest may come in a soft form, as worn by many police officers, prison guards, security guards, and some private citizens, used to protect against stabbing attacks or light projectiles, using metallic or para-aramid components. Soldiers, police tactical units, marines, and special operations forces wear hard armors, either in conjunction with soft armor or alone, to protect against rifle ammunition or fragmentation. History Early modern era In 1538, Francesco Maria della Rovere commissioned Filippo Negroli to create a bulletproof vest. In 1561, Maximilian II, Holy Roman Emperor is recorded as testing his armor against gun-fire. Similarly, in 1590 Sir Henry Lee expected his Greenwich armor to be "pistol proof". Its actual effectiveness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 IndyCar Series Season
The 2008 IndyCar Series was the 13th season of the IndyCar Series. It was the 97th recognized season of top-level American open wheel racing. On February 26, 2008, the managements of Indy Racing League and Champ Car came to an agreement to become a single entity, ending a twelve-year split and resulting in the cancellation of the 2008 Champ Car World Series. The first race was held March 29, at Homestead-Miami Speedway. The premier event was the 92nd Indianapolis 500 on May 25. All races were televised on ABC, ESPN, ESPN2, or ESPN Classic. All IndyCar Series broadcasts continued to use the Side-By-Side format in their first year of HD broadcasts. Races were also broadcast on the IMS Radio Network and XM for the radios. Scott Dixon driving for Chip Ganassi Racing won the first unified title for 13 years after completing the IndyCar–Indy 500 double. Dixon took six victories over the course of the season but had to fend off a consistent championship challenge from Hél ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthetic Polymer
Some familiar household synthetic polymers include: Nylons in textiles and fabrics, Teflon in non-stick pans, Bakelite for electrical switches, polyvinyl chloride (PVC) in pipes, etc. The common PET bottles are made of a synthetic polymer, polyethylene terephthalate. The plastic kits and covers are mostly made of synthetic polymers like polythene, and tires are manufactured from Buna rubbers. However, due to the environmental issues created by these synthetic polymers which are mostly non-biodegradable and often synthesized from petroleum, alternatives like bioplastics are also being considered. They are however expensive when compared to the synthetic polymers. Inorganic polymers * Polysiloxane * Polyphosphazene * Polyborazyline Organic polymers The eight most common types of synthetic organic polymers, which are commonly found in households are: *Low-density polyethylene (LDPE) *High-density polyethylene (HDPE) *Polypropylene (PP) * Polyvinyl chloride (PVC) * Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SRI International
SRI International (SRI) is an American nonprofit organization, nonprofit scientific research, scientific research institute and organization headquartered in Menlo Park, California. The trustees of Stanford University established SRI in 1946 as a center of innovation to support economic development in the region. The organization was founded as the Stanford Research Institute. SRI formally separated from Stanford University in 1970 and became known as SRI International in 1977. SRI performs client-sponsored research and development for government agencies, commercial businesses, and private foundations. It also licenses its technologies, forms strategic partnerships, sells products, and creates Research spin-off, spin-off companies. SRI's headquarters are located near the Stanford University campus. SRI's annual revenue in 2014 was approximately $540 million, which tripled from 1998 under the leadership of Curtis Carlson. In 1998, the organization was on the verge of bankruptcy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tensile Strength
Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or F_\text within equations, is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials the ultimate tensile strength is close to the yield point, whereas in ductile materials the ultimate tensile strength can be higher. The ultimate tensile strength is usually found by performing a tensile test and recording the engineering stress versus strain. The highest point of the stress–strain curve is the ultimate tensile strength and has units of stress. The equivalent point for the case of compression, instead of tension, is called the compressive strength. Tensile strengths are rarely of any consequence in the design of ductile members, but they are important with brittle members. They are tabulated for common materials such as alloys, composite materials, ceramics, plastics, and wood. Definition The ultimate tensile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
False Claims Act
The False Claims Act (FCA), also called the "Lincoln Law", is an American federal law that imposes liability on persons and companies (typically federal contractors) who defraud governmental programs. It is the federal government's primary litigation tool in combating fraud against the government. The law includes a '' qui tam'' provision that allows people who are not affiliated with the government, called "relators" under the law, to file actions on behalf of the government. This is informally called " whistleblowing", especially when the relator is employed by the organization accused in the suit. Persons filing actions under the Act stand to receive a portion (15–30%, depending on certain factors) of any recovered damages. As of 2019, over 71% of all FCA actions were initiated by whistleblowers. Claims under the law have typically involved health care, military, or other government spending programs, and dominate the list of largest pharmaceutical settlements. Between 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeywell International
Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance materials and technologies (PMT), and safety and productivity solutions (SPS). Honeywell is a Fortune 100 company, ranked 94th in 2021. In 2021 the corporation had a global workforce of approximately 99,000 employees, down from 113,000 in 2019. The current chairman and chief executive officer (CEO) is Darius Adamczyk. The corporation's current name, Honeywell International Inc., is a product of the merger of Honeywell Inc. and AlliedSignal in 1999. The corporation headquarters were consolidated with AlliedSignal's headquarters in Morristown, New Jersey; however, the combined company chose the name "Honeywell" because of the considerable brand recognition. Honeywell was a component of the Dow Jones Industrial Average index from 1999 to 2008 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2007 Formula One Season
The 2007 FIA Formula One World Championship was the 61st season of FIA Formula One motor racing. It featured the 2007 FIA Formula One World Championship, which began on 18 March and ended on 21 October after seventeen events. The Drivers' Championship was won by Ferrari driver Kimi Räikkönen by one point at the final race of the season, making Räikkönen the third Finnish driver to take the title. An appeal by McLaren regarding the legality of some cars in the final race could have altered the championship standings, but on 16 November, the appeal was rejected by the International Court of Appeal, confirming the championship results. Räikkönen entered the final race in third position in the drivers' standings, but emerged as champion after the chequered flag, a feat first accomplished by Giuseppe Farina in . The Constructors Championship was won by Scuderia Ferrari Marlboro. A major talking point of the season had been an espionage controversy involving Ferrari a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of British Columbia
The University of British Columbia (UBC) is a public university, public research university with campuses near Vancouver and in Kelowna, British Columbia. Established in 1908, it is British Columbia's oldest university. The university ranks among the top three universities in Canada. With an annual research budget of $759million, UBC funds over 8,000 projects a year. The Vancouver campus is situated adjacent to the University Endowment Lands located about west of downtown Vancouver. UBC is home to TRIUMF, Canada's national laboratory for Particle physics, particle and nuclear physics, which houses the world's largest cyclotron. In addition to the Peter Wall Institute for Advanced Studies and Stuart Blusson Quantum Matter Institute, UBC and the Max Planck Society collectively established the first Max Planck Institute in North America, specializing in quantum materials. One of the largest research libraries in Canada, the UBC Library system has over 9.9million volumes among it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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