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“You see complete destruction of bacterial cells,” says Kunio Komiyama, the inventor of the device. Oh, and did we mention that no toothpaste is required?
Mechanical University of Saskatchewan dentistry professor emeritus Dr. Kunio Komiyama and his colleague Dr. Gerry Uswak are recruiting 120 teens willing to brush with a prototype light-powered toothbrush and sit in a dentist’s chair for a few extra inspections. The manufacturer, the Shiken company of Japan, is paying the researchers to investigate whether the brush, which causes a chemical reaction in the mouth, does a better job of eliminating plaque and bacteria than a conventional toothbrush.
Komiyama’s first model, which was described 15 years ago in the Journal of Clinical Periodontology, contained a titanium dioxide rod in the neck of the brush, just below the nylon bristles. It works when light shines on the wet rod, releasing electrons. Those electrons react with acid in the mouth, which helps break down plaque. No toothpaste is required.
Now Komiyama’s back with a newer model, the Soladey-J3X, which he says packs twice the chemical punch compared to the original. Protruding from the base of the brush is a solar panel, which transmits electrons to the top of the toothbrush through a lead wire. It won’t work in the dark, though – the brush needs about as much light as a solar-powered calculator would to operate.
First dreamed up 15 years ago by Dr. Kunio Komiyama, who is now a professor of dentistry at Canada’s University of Saskatchewan, the Soladey-J3X has a solar panel at its base that requires minimal amounts of light to transmit electrons to the head of the toothbrush through a titanium dioxide semiconductor embedded in the body.
Once there, the electrons react with acid that occurs naturally in the mouth, creating a chemical reaction that breaks down plaque and kills bacteria, according to Dr. Komiyama and his colleague, Dr. Gerry Uswak, dean of the university’s College of Dentistry.
Prototypes of the cutting-edge device have been developed by Shiken Inc. — “shi ken” translates as “dental health” in Japanese — and research is underway.
To date, according to the Osaka-based company, tests in cultures of bacteria that cause periodontal disease have shown that the process brought about the “complete destruction of bacterial cells,” as well as breaking down the plaque.
A study on 120 teenagers is presently underway to determine how they rate it in comparison with a regular toothbrush.
The gadget has already received the recognition of the oral care industry, winning first prize at the recent annual FDI World Dental Conference in Dubai, fighting off 170 other entrants.
Patents on the toothbrush have already been taken out in nine countries, including Japan, although the company says the product will not be released onto the market until the early months of next year. Price should be around 40 euros (4300 Japanese yen).
BOPE duties are break barricades constructed by drug traffickers, shoot to kill at criminals threatening human life,
exterminate drug ghettos as well as its gangs, suppress prison riots,s pecial missions in swamps or mountainous terrains such as reconnaissance, planning and infiltration
The force has a fleet of Armoured fighting vehicles, which are known as “Pacificador” (“Peacemaker”), or “Caveirão” (“Big Skull”)
These vehicles are used in operations in the slums (favelas) where BOPE faces intense conflicts with drug dealers, they are heavily equipped with .30 Carbines. BOPE soldiers are equipped with heavy armament: M16 rifle A2, Taurus PT92, IMBEL 9mm, C-4 explosives, Frag grenades and more
SWAT units may also employ ARVs, (Armored Rescue Vehicle) for insertion, maneuvering, or during tactical operations such as the rescue of civilians/officers pinned down by gunfire. Helicopters may be used to provide aerial reconnaissance or even insertion via rappelling or fast-roping. To avoid detection by suspects during insertion in urban environments, SWAT units may also use modified buses, vans, trucks, or other seemingly normal vehicles.
While a wide variety of weapons are used by SWAT teams, the most common weapons include submachine guns, assault rifles, shotguns, and sniper rifles.
Semi-automatic pistols are the most popular sidearms.
Common submachine guns used by SWAT teams include the 9 mm and 10 mm Heckler & Koch MP5
To breach doors quickly, battering rams, shotguns, or explosive charges can be used to break the lock or hinges, or even demolish the door frame itself. SWAT teams also use many less-lethal munitions and weapons. These include Tasers, pepper spray canisters, shotguns loaded with bean bag rounds, and PepperBall guns.
The Yangtze River is the largest River in China, and the third longest in the world. All year round with plenty of rainfall the river is also known as “Golden Waterway”. Over 6,300 kilometers long, it lies to the west of Geladandong Mountain. The river flows from west to east through provinces of Qinghai, Tibet, Sichuan, Yunnan, Hubei, Hunan, Jiangxi, Anhui and Jiangsu as well as the city of Shanghai, finally emptying into the East China Sea. Here are some cool photographs of that wonderful river.
Exposition 2010 Shanghai China will be the great event to explore the full potential of urban life. Being the first World Exposition it will attract the people from across the world, focusing on the theme “Better City, Better Life”. No doubt, Chinese people will present to the world a successful exposition. This event is being held on the both banks of the Huangpu River, Shanghai from May 1 to October 31, 2010. More than 190 countries have registered to participate in this event.
This post features that Expo 2010 Shanghai, carries on traditions and it will opens a new vista into the future. As Chinese Government motto is: “Keeping in mind the next 60 years’ development while preparing for the six months’ Exposition”.
15 Photos
Photos Credit 1 to 3: Remko Tanis
Photos Credit 4 to 6: Pamhule
Photos Credit 7 to 12: Remko Tanis
Photo Credit: Pamhule