justdanceitoff.com

Saturday, November 25, 2006

Traces of radioactive material that apparently killed former Russian spy Alexander Litvinenko were found at restaurants where he met other spies just before falling ill and at his home, Scotland Yard said Friday.

Litvinenko, a former KGB agent who was investigating the death of Russian journalist Anna Politkovskaya suddenly fell ill on November 1. In interviews, he stated that he had met with two former KGB officials earlier in the day, and then had had lunch at Itsu, a sushi restaurant on Piccadilly in London. He died two days later at the age of 44.

“Traces of Polonium-210 were found at the Itsu sushi restaurant in Piccadilly, the Millennium Hotel, Grosvenor Square, and at Mr. Litvinenko’s home in Muswell Hill, London,” Scotland Yard said in a statement. “We are not prepared to discuss further.”

Roger Cox, head of the HPA’s radiation protection branch, confirmed that the radiation was found in Litvinenko’s body.

“A large quantity of alpha radiation from polonium-210 was found in the urine of Mr. Litvinenko”, Cox said, adding that it was “unlikely” that the radioactive material came from natural sources.

Litvinenko, in a statement written before his death and read Friday, accused Russian President Vladimir Putin of being behind his murder, a charge Putin denied.

“You may succeed in silencing one man but the howl of protest from around the world will reverberate, Mr. Putin, in your ears for the rest of your life,” Litvinenko said in his statement.

Doctors all around the world have been explaining to the media how harmful Polonium-210 can be to a person.

“Only a very, very small amount of polonium would need to be ingested to be fatal, but that depends on how pure the polonium is,” said Dr. Mike Keir, a radiation protection adviser at the Royal Victoria Infirmary.

[edit]

Tuesday, July 17, 2007

An alarm for heavy chemical pollution has been issued in the Lviv region, Ukraine, where yesterday evening a railway disaster led to a fire involving 15 containers of liquid yellow phosphorus.

Extinguishing the fire proved extremely difficult because water cannot be used: in contact with phosphorus, water creates poisonous gas. It took six hours before the flames were extinguished. Gas was generated nonetheless, and at the moment the poisoned area extends about 90 sq. km. The casualties count is already heavy: 20 people are reported injured, 13 of them in critical condition. They have been carried to the Lviv hospital. Podrobnosti reports that the fire started when one of the containers started to leak and the phosphor caught fire.

The poisoned area includes 14 villages. From the five villages that are closer to the disaster area some 800 people have already been evacuated. Half of the evacuees had to manage on their own as there was not enough public transport for all.

At the moment there is no available data about the wind direction or next expected movements of the phosphorus cloud. Special firemen units remain on place to control the possibility of a new fire, while the administration of the Lviv Oblast tries to forecast the possible short- and mid-term evolution of the situation.

The Ukrainian Railways have officially excluded the possibility of a terrorist act as a cause for the disaster.

Podrobnosti reports the deadly dose of yellow phosphor at 0.1 g. According to that source, when poisoning living beings, phosphor causes liver necrosis and attacks the bones and spinal cord.

[edit]

Thursday, June 5, 2008

On June 3rd, 2008, two United States Internet service providers (ISPs) announced they would begin tests to slow web access for their most active customers and charge them for extra speed. Comcast and Time Warner Cable, two of the largest ISPs in North America, both made separate announcements of their plans. The actions come in the wake of an investigation by the Federal Communications Commission (FCC), over whether Comcast had restricted some customers from sharing videos, music, and similar files. The FCC investigation led to a US Congress debate over whether and how much control ISPs should have over the flow of customer data.

Public interest groups complained in November 2007 to the FCC that Comcast had specifically targeted customers using applications that made use of the BitTorrent system, a popular form of file sharing. Free Press, an advocacy group that pushes for better oversight of cable operators such as Comcast, stated that Comcast practices were discriminatory towards users of the legal technology. “The cable companies see a hammer hovering above their heads and are scrambling to find ways to reduce the appearance of wrongdoing,” said Ben Scott, head of the group.

According to Roger Entner, a senior vice president from Nielsen IAG, as little as 5 percent of all Internet users may consume as much as 50 percent of all the bandwidth on the Internet. “This is the politically correct version of doing what Comcast had been doing before, though it takes the occasional [peer-to-peer] user off the hook,” Entner said. Sena Fitzmaurice, a Comcast spokesperson, said, “This says we won’t be looking at what type of traffic that there is, even though we still need to manage the network.”

Comcast’s tests are expected to begin in Chambersburg, Pennsylvania and Warrenton, Virginia.

While Comcast will attempt to throttle the speed of all its high-volume users, Time Warner Cable intends to use a different method. They will meter and bill clients, charging more money for faster speeds and larger amounts of transmitted data, functioning more like a traditional public utility, such as an electric company or cell phone service. Their metered billing test will begin on June 5 in Beaumont, Texas for newly enrolled customers. “Instead of raising prices across the board, consumers who are excessive users would pay,” said Alex Dudley, a Time Warner Cable spokesman. “It is clearly the fairest way to fund the investment that is going to be required to support that use.”

An Associated Press report that Time Warner Cable will bill customers between $29.95 to $54.90USD per month has been confirmed by the cable operator, with clients charged an extra $1 for each gigabyte (GB) by which they exceed their purchased plan. Art Brodsky, communications director of Public Knowledge, a consumer advocacy group in Washington D.C., has expressed concerns about the Time Warner Cable plan. Time Warner Cable’s most expensive offering, $54.90, comes with 15 megabits-per-second of data transfer speed and a 40 gigabyte limit on total data transfer.

“An HD (high-definition) movie is 8GB or so, three movies is more than half your allowance for a month, and heaven knows what else you might want to watch,” Brodsky says. “This is not a relieving congestion scheme as much as it is a rationing scheme. All it does is protect an inadequate infrastructure from the cable company.”

Thursday, December 18, 2008

A team of eight transplant surgeons in Cleveland Clinic in Ohio, USA, led by reconstructive surgeon Dr. Maria Siemionow, age 58, have successfully performed the first almost total face transplant in the US, and the fourth globally, on a woman so horribly disfigured due to trauma, that cost her an eye. Two weeks ago Dr. Siemionow, in a 23-hour marathon surgery, replaced 80 percent of her face, by transplanting or grafting bone, nerve, blood vessels, muscles and skin harvested from a female donor’s cadaver.

The Clinic surgeons, in Wednesday’s news conference, described the details of the transplant but upon request, the team did not publish her name, age and cause of injury nor the donor’s identity. The patient’s family desired the reason for her transplant to remain confidential. The Los Angeles Times reported that the patient “had no upper jaw, nose, cheeks or lower eyelids and was unable to eat, talk, smile, smell or breathe on her own.” The clinic’s dermatology and plastic surgery chair, Francis Papay, described the nine hours phase of the procedure: “We transferred the skin, all the facial muscles in the upper face and mid-face, the upper lip, all of the nose, most of the sinuses around the nose, the upper jaw including the teeth, the facial nerve.” Thereafter, another team spent three hours sewing the woman’s blood vessels to that of the donor’s face to restore blood circulation, making the graft a success.

The New York Times reported that “three partial face transplants have been performed since 2005, two in France and one in China, all using facial tissue from a dead donor with permission from their families.” “Only the forehead, upper eyelids, lower lip, lower teeth and jaw are hers, the rest of her face comes from a cadaver; she could not eat on her own or breathe without a hole in her windpipe. About 77 square inches of tissue were transplanted from the donor,” it further described the details of the medical marvel. The patient, however, must take lifetime immunosuppressive drugs, also called antirejection drugs, which do not guarantee success. The transplant team said that in case of failure, it would replace the part with a skin graft taken from her own body.

Dr. Bohdan Pomahac, a Brigham and Women’s Hospital surgeon praised the recent medical development. “There are patients who can benefit tremendously from this. It’s great that it happened,” he said.

Leading bioethicist Arthur Caplan of the University of Pennsylvania withheld judgment on the Cleveland transplant amid grave concerns on the post-operation results. “The biggest ethical problem is dealing with failure — if your face rejects. It would be a living hell. If your face is falling off and you can’t eat and you can’t breathe and you’re suffering in a terrible manner that can’t be reversed, you need to put on the table assistance in dying. There are patients who can benefit tremendously from this. It’s great that it happened,” he said.

Dr Alex Clarke, of the Royal Free Hospital had praised the Clinic for its contribution to medicine. “It is a real step forward for people who have severe disfigurement and this operation has been done by a team who have really prepared and worked towards this for a number of years. These transplants have proven that the technical difficulties can be overcome and psychologically the patients are doing well. They have all have reacted positively and have begun to do things they were not able to before. All the things people thought were barriers to this kind of operations have been overcome,” she said.

The first partial face transplant surgery on a living human was performed on Isabelle Dinoire on November 27 2005, when she was 38, by Professor Bernard Devauchelle, assisted by Professor Jean-Michel Dubernard in Amiens, France. Her Labrador dog mauled her in May 2005. A triangle of face tissue including the nose and mouth was taken from a brain-dead female donor and grafted onto the patient. Scientists elsewhere have performed scalp and ear transplants. However, the claim is the first for a mouth and nose transplant. Experts say the mouth and nose are the most difficult parts of the face to transplant.

In 2004, the same Cleveland Clinic, became the first institution to approve this surgery and test it on cadavers. In October 2006, surgeon Peter Butler at London‘s Royal Free Hospital in the UK was given permission by the NHS ethics board to carry out a full face transplant. His team will select four adult patients (children cannot be selected due to concerns over consent), with operations being carried out at six month intervals. In March 2008, the treatment of 30-year-old neurofibromatosis victim Pascal Coler of France ended after having received what his doctors call the worlds first successful full face transplant.

Ethical concerns, psychological impact, problems relating to immunosuppression and consequences of technical failure have prevented teams from performing face transplant operations in the past, even though it has been technically possible to carry out such procedures for years.

Mr Iain Hutchison, of Barts and the London Hospital, warned of several problems with face transplants, such as blood vessels in the donated tissue clotting and immunosuppressants failing or increasing the patient’s risk of cancer. He also pointed out ethical issues with the fact that the procedure requires a “beating heart donor”. The transplant is carried out while the donor is brain dead, but still alive by use of a ventilator.

According to Stephen Wigmore, chair of British Transplantation Society’s ethics committee, it is unknown to what extent facial expressions will function in the long term. He said that it is not certain whether a patient could be left worse off in the case of a face transplant failing.

Mr Michael Earley, a member of the Royal College of Surgeon‘s facial transplantation working party, commented that if successful, the transplant would be “a major breakthrough in facial reconstruction” and “a major step forward for the facially disfigured.”

In Wednesday’s conference, Siemionow said “we know that there are so many patients there in their homes where they are hiding from society because they are afraid to walk to the grocery stores, they are afraid to go the the street.” “Our patient was called names and was humiliated. We very much hope that for this very special group of patients there is a hope that someday they will be able to go comfortably from their houses and enjoy the things we take for granted,” she added.

In response to the medical breakthrough, a British medical group led by Royal Free Hospital’s lead surgeon Dr Peter Butler, said they will finish the world’s first full face transplant within a year. “We hope to make an announcement about a full-face operation in the next 12 months. This latest operation shows how facial transplantation can help a particular group of the most severely facially injured people. These are people who would otherwise live a terrible twilight life, shut away from public gaze,” he said.