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Altered HIV a potential cancer treatment?

Wednesday, February 16, 2005

At UCLA, a team of researchers has developed a harmless version of HIV that is designed to seek out, and potentially destroy, cancer cells.

In a laboratory-mouse experiment, the treated cells headed directly for melonoma and lung cancer cells, clustering around them with a surprising level of intuitiveness. Gene therapy for cancer has been at an impasse for the last 20 years, said the team, but now an effective carrier has been found in the most unlikely of sources. Essentially, one of the world’s largest health threats is now being considered to fight another.

Says Dr. Irvin Chen, from UCLA’s AIDS Institute, “The disarmed AIDS virus acts like a Trojan horse, transporting therapeutic agents to a targeted part of the body, such as the lungs, where tumors often spread.”

First the virus’s coating is removed and the virus is reprogrammed so that it recognizes and attaches to the p-lipoproteins of a cancer cell, one of cancer’s primary defenses. The retro-virus was also altered with a fluorescent protein for easy tracking within the lab mice. The next step will be to graft a cancer-killing gene onto the modified AIDS virus’s genetic structure.

Currently, a case of melanoma skin cancer spreading to the lungs is a confirmed death sentence. Should this method of treatment improve into a workable treatment, both life-threatening cancers and the AIDS retro-virus could be effectively neutered. But the team cautions that the treatment is in the very early stages and will take several more years to develop.

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Tornado kills one and injures 100 in northern Colorado

Friday, May 23, 2008

A tornado that has caused 28 miles (45 km) of destruction throughout Weld County, Colorado, has killed one and injured 100. The man killed was inside a vehicle that was destroyed in the storm, west of Greeley, which is about 60 miles (97 km) north of Denver.

A state trooper says that multiple car accidents occurred on highways throughout the county. U.S. Route 85 was closed after two semi-trailers were flipped over, though the drivers were not injured. Dozens of houses and vehicles were badly damaged by the tornado as it passed through. The town of Windsor had hundreds of homes and businesses damaged, including the town hall, in addition to trees down and electricity outages. In response to the disaster, Colorado Governor Bill Ritter declared a state of emergency and activated the Colorado National Guard in the badly damaged Weld County.

Severe storms also hit Laramie, Wyoming, 145 miles northwest of Denver, knocking out electricity to 7,300 customers and damaging buildings. One damaged building, the Quadra Dangle Square Dance Club, listed on the National Register of Historic Places, had its roof and porch ripped off. The Associated Press reports Brian Chapman of the National Weather Service in Cheyenne as saying that “indicators are very strongly in favor of it being a tornado,” but no confirmation is possible until the damage is fully assessed. Governor Dave Freudenthal of Wyoming has also authorized a crew of eight National Guardsman to help clean up the damage. Another twister touched down just east of Cheyenne, Wyoming. The local fire department responded to a call after the storm damaged a barn and a house just south of I-80.

Rain, hail and snow pelted the entire region, and more storms are predicted for today. The National Weather Service in Cheyenne reports, “Severe thunderstorms are likely again this afternoon into early this evening mainly east of the Laramie Range…with the greatest threat east of Cheyenne across the southern Nebraska panhandle. Locally heavy rainfall is also possible which may cause some localized flooding especially in areas that received heavy rainfall Thursday.” Winds are expected to gust above 40mph throughout the day. At 7:40am MST weather conditions were calm and partly cloudly just west of Laramie, Wyoming

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The Aviator and Vera Drake scoop top prizes at the 2005 Orange BAFTA Film Awards

Sunday, February 13, 2005

LONDON – The big-budget Hollywood movie The Aviator and the low-budget Brit flick Vera Drake have scooped the main prizes at the 2005 Orange BAFTA Film Awards. Four gongs went to The Aviator with the top ones being Best Film and Cate Blanchett for Best Supporting Actress. Vera Drake got three gongs with Best Director, Best Actress & Costume Design. Jamie Foxx got Best Actor with Ray and Clive Owen got Best Supporting Actor with Closer.

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MS-13 gang threatens the Arizona “minutemen”

April 1, 2005

Ebner Anivel Rivera-Paz, a leader of the vicious Mara Salvatruchas, nicknamed the MS-13 gang, issued orders from his prison cell for his followers to teach the American “Minutemen” volunteers a lesson when they begin patrolling the Mexican border today.

MS-13 gang members, considered by some to be America’s most violent gang, is accused of engaging in such acts as cutting off the testicles of their enemies and feeding them to their dogs, and cutting the heads off their opponents to play soccer with. However, such allegations of brutality don’t seem to frighten the “Minutemen”, a group of more than 1,000 volunteers planning to patrol the Arizona-Mexico border beginning April 1st. They have been called vigilantes by President Bush and Mexican President Vicente Fox. They sometimes sarcastically refer to themselves as “undocumented border patrol agents”. James Gilchrist, a Vietnam veteran and spokesman for the Minutemen, in response to the MS-13 threat said; “We’re not worried because half of our recruits are retired trained combat soldiers… they [MS-13] are just a bunch of punks.”

The MS-13 gang now has about 20,000 members nationwide. The US Immigration and Customs Enforcement, nicknamed ICE, began to focus on the gang with an initiative called “Operation Community Shield”. The very existence of MS-13 is considered by the “Conservative Voice” to be a direct consequence of the USA government’s 1980’s policies in Central America; “the chickens are coming home to roost. Its MS-13 members are the sons of immigrants from El Salvador and other Central American countries that were forced to flee because of the CIA instigated war during the Reagan Administration that completely destroyed the physical, economic, social, religious and cultural infrastructure of the region. MS-13 was founded in Los Angeles by the offspring of the immigrants for protection.

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A membrane roofing system is a popular choice for a commercial roof; it is designed to reduce the possibility of pooling and to reduce the incidence of leaks which are often associated with other roofing systems. This type of roof is rapidly becoming the favorite type of commercial roof, replacing the old traditional roofs that were used in the past. Membranes roofs are used on flat roofs or roofs which are only slightly sloped. The roofing system is available in three types; thermo-set, thermoplastic and modified bitumen.

A thermo-set roof consists of rubber sheets which are laid on the roof surface, the rubber sheets overlap at the edges. The overlapped seams are heated which causes the rubber to melt, resulting in the series of sheets to become one large continuous membrane. The rubber that is used in manufacturing the sheets is designed to form a chemical bond when heated; the seal becomes as strong as the sheet.

A commercial roof using a thermoplastic membrane is quite similar to a thermo-set roofing system but the material is PVC rather than rubber. The sheets of PVC do not form a chemical bond but they do form a tight seal when heated but the seal is effective on keeping out water. A thermoplastic membrane roof is somewhat less expensive than a thermo-set roof but it will need a little more maintenance.

Of the three systems, modified bitumen is the least expensive and the most common. The bitumen comprises rubber compounds and certain modifiers which are added to normal asphalt roofing compound. The modified bitumen is heated so that when it installed on the roof it forms a tight seal. There are new variation’s of this material; the new material does not need heat for application, it is produced in sheets in the factory; the sheets are lapped and held in place by self-adhesive strips, the seams, which overlap form a watertight seal.

A classic membrane roof system is prone to leaks because of the way it is constructed; this is not the case when a membrane is used as the commercial roof. In the case of traditional membrane roofs the seams are not sealed tightly, this is not the case with modern membrane roofs. Another advantage is that there is no need to place a gravel overlay which is normally the case with an asphalt roof. Because membrane roofing sheets are fastened directly to the roof, there is no need for gravel to hold them in place.

A flat or low slope commercial roof is constructed using one of the three different membrane roofing systems. For complete details on membrane roofs you are invited to contact StormForce of Jacksonville.

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Chicago requires blind students to take driver’s education

Monday, March 13, 2006

Mayra Ramirez, a 16 year old Chicago, USA student is blind. In order to graduate, she and dozens of other visually impaired students in Chicago schools are required to pass a written rules-of-the-road exam. “In other classes, you don’t really feel different because you can do the work other people do,” Ramirez said. “But in driver’s ed, it does give us the feeling we’re different. In a way, it brought me down, because it reminds me of something I can’t do.”

Michael Vaughn, a spokesman for Chicago schools said, “I can’t explain why up to this point no one has raised the issue and suggested a better way for visually impaired students to opt out of driver’s ed.”

Blind students are typically told that they must take the class to graduate; although, by law, any parent can request a change in a disabled student’s education plan. This law is rarely, if ever, disclosed to the students, according to the Chicago Tribune.

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April

9

New Zealand dog saves five children; receives international attention

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New Zealand dog saves five children; receives international attention
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Saturday, May 5, 2007

A small, “nicely trained” Jack Russell Terrier gave his life to help save a group of five children from two aggressive pitbulls last Sunday in Manaia, Taranaki, New Zealand.

The dog named George is being described as a hero, gathering a huge amount of international media interest in the process.

The dog suffered massive injuries that the vet had never seen to that extent before, which resulted in 69-year-old Alan Gay, the dog’s owner, allowing George to be put down. He now regrets this decision.

The two pitbulls rushed at the group of children that George was following to the dairy, including a four-year-old. George then started barking loudly at the pair of dogs, and put himself between the dogs and the children. Mr Gay told Fox News, “If it wasn’t for George, those kids would have copped it.”

Despite having received offers of new dogs, Mr Gay has said that he will wait a while before getting another Jack Russell Terrier, as he is afraid it could happen again.

It is also believed that the two attacking dogs, which have been destroyed, were bred to be aggressive, including being fed the drug methamphetamine, commonly referred to as “P” in New Zealand.

Mr Gay has said that Manaia has had a problem with stray dogs before, but he never expected that George would become a victim.

One story ran in USA Today, which prompted over 120 comments, and one reader to personally call Alan Gay expressing their condolences.

Responding to the huge amount of media interest, Mr Gay said, “This really surprises me, and it’s marvellous. I never expected this … I’m surprised it got around the world as it did.” He says he has been getting a huge amount of phone calls from the media and the public. “The phone has been going since about half past seven this morning. Every time I hang up it rings again. It’s worn out; I might have to get a new one.”

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April

8

Czech woman wins the first Sudoku world championship

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Czech woman wins the first Sudoku world championship
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Sunday, March 12, 2006

Jana Tylova, a 31-year-old Czech woman, came from behind to win the inaugural Sudoku world championships to become the top sudoku player in the world. Tylova works as an accountant for a construction company in the Czech city of Most, and she beat 85 players from 22 countries.

A graduate student from Harvard University, Thomas Snyder, who had been leading, came in second and Wei-Ha Huang, a 30-year-old Google software engineer in California, came third.

Tylova, the only woman in the top 18, finished only ninth after the first round before passing all the men to claim the championship. She is already being called “Queen Jana of Sudoku”.

“There is no difference between men and women, and I tried to prove that even in logic, men and women are on the same level”, said Tylova as people cheered loudly. Jana smiled shyly while accepting her trophy from Wayne Gould who came upon Sudoku in Japan and popularised the game worldwide.

Jana told reporters: “I find it very difficult to give advice at all, but I can advise people to practice every day and to follow websites where there are a lot of games available.” Tylova revealed that before competitions she played sudoku two hours per day. “It will probably be more now”, she said. She showjumps with her horse Impulse during the rest of her spare time.

Austria, Belgium, Britain, Czech Republic, Croatia, Denmark, France, Germany, Poland, Hungary, the Netherlands, India, Italy, Japan, Venezuela, Switzerland, the United States, the Philippines, Estonia, Slovakia and Turkey were the countries represented in the championship contest.

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April

8

What Is Gps Used For Today And How Does A Gps Receiver Work?

By John B Mayall

When you hear about General Positioning System (GPS) system, you should first consider the GPS receiver. It is the part of the device responsible of processing the signal sent by the satellite in the space to find out your actual location. The receiver is usually placed on the dashboard of your car or underneath it. It renders on a dedicated output device your screen your destination.

The entire GPS is a constellation of about 27 satellites rolling around the center of the Earth at a steady speed. Amongst these satellites, 24 of them are responsible of processing signals emitted by the receiver and the remaining satellites are used for storage purposes on case of an unplanned event. The GPS receiver is responsible of hooking up with satellites used for storage purposes and working out its position from that satellite by computing their distance. The mathematical tenet used for this purpose is named trilateration.

Trilateration can be achieved in two dimensions and also in three dimensions. The rationale of this mathematical principle is to work out a triangle where you are located at the center of it. As soon as the GPS receiver emits its position and makes a connection with other satellites, it immediately works out three nearest points and computes your position.

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Three types of GPS receivers can be noticed: those which can be installed in a car, lightweight and mobile GPS receivers and tracking GPS receivers. It is obvious that portable receivers are a huge boon for outdoor activities.

Finally, it is good to know that the actual process of GPS receivers is a little bit more intricate than what was described in previous sections. However, throughout this article, although the main objective was to give a broad overview how they work in theory the next paragraph will delve into advanced details about GPS computations.

From previous sections, we learnt that the GPS receiver computes its distance to the nearest available satellites in space by noticing the time spent by the emission of a given signal from the receiver to the satellite. There are another category of GPS receivers that you have not mentioned throughout this article. In order to overcome the lack of precision of the traditional GPS receiver, differential GPS receivers were born. Their rationale is to estimate the level of GPS errors at a stationary receiver station with a location that was already computed before. Since the Differential GPS hardware at the station is already aware of its own location, it can work out its receiver’s level of errors in a straightforward way. The station then broadcasts a radio signal to all Differential GPS-equipped receivers in the nearby area, providing signal correction information for that area. In general, accessing this correction information makes Differential GPS receivers much more correct and precise than traditional GPS receivers.

The most essential function of a GPS receiver is to pick up the transmissions of at least four available satellites and combine the information in those transmissions with information in an electronic almanac, all in order to figure out the receiver’s position on Earth.

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