Thursday, December 1, 2005

Surgeons in France have performed a face transplant operation on a French woman who had lost her nose, lips and chin after being savaged by a dog. According to Iain Hutchison, an oral-facial surgeon at Barts and the London Hospital, the transplant is the first one to use skin from another person.

Doctors say the woman’s new face will be a “hybrid” between her donor’s face and her own face before the attack. In the five hour long operation, the donor’s tissues, muscles, arteries and veins were attached to the patient’s lower face. It is more favourable to use skin from another person’s face instead of skin from another part of the patient’s body, as the texture and colour of the skin are more likely to match.

A statement released by the hospital in Amiens said that the 38-year-old patient, who wishes to remain anonymous, has not been able to eat or speak properly since the attack in May this year. The woman was reportedly in “excellent general health” and her graft looked normal.

Ethical concerns, psychological impact, concerns 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 Hutchison 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.”

Saturday, April 23, 2011

Apple Inc.’s iPhone and iPad periodically send location information back to the company, according to new reports. The data is transmitted to a secure database that only it can access, Apple claims.

Bruce Sewell, an attorney for Apple, sent a letter to two US Representatives last year, discussing the company’s data collection techniques and policies. The thirteen-page letter states that location information is recorded and sent to Apple every twelve hours, but only if the user enables the device’s location settings.

Apple began building a location database of its own when it decided to stop using similar services offered by Google & SkyHook Wireless. Location data is used in social networking applications and call routing.

In a statement to the Associated Press, Democratic Massachusetts Representative Edward Markey said, “Apple needs to safeguard the personal location information of its users to ensure that an iPhone doesn’t become an iTrack.”

Such data collection is not unique to Apple. Google’s Android operating system uses similar technology to provide location-based services to its users. Google has said that it also uses the data collected to provide accurate traffic data through its “Maps” applications on both Apple and Android devices. However, the company declined to comment on the latest findings regarding its data collection.

Apple was also recently in the spotlight after it was discovered that the iPhone and iPad were retaining location data on the device itself. This information is collected in an unencrypted file and is not transmitted elsewhere. The data file reportedly contains a variety of information, including longitude and latitude, cell phone tower identification data, wireless hotspot identification, and timestamps.

Saturday, April 9, 2005

The top money grossing entertainers in Australia in 2005 were not Kylie Minogue, Nicole Kidman, or Russell Crowe. In fact, it was four tot-time entertainers, the Wiggles, with their preference for bright colours and sing-along dance numbers. Their earnings level was estimated at AU$45 million over the last year by Australian publication Business Review Weekly (BRW), in its yearly who’s-who ranking of the nation’s top 50 entertainment earners.

“They got into the market early, they took time to understand their audience, not only children but the parents who pay for everything,” BRW managing editor Tony Featherstone, said.

Though almost doubling her earnings from the previous year, Nicole Kidman only made second place, at AU$40m. And Crowe came in third, at “only” AU$27m. Fourth place was long-time heavy metal favourites, AC/DC, whose estimated income was AU$18m.

Another children’s entertainment band, Hi-5 came in sixth with $15m, after Naomi Watts.

Friday, November 30, 2012

Qatari non-profit organization Gulf Organization for Research and Development (GORD) launched a low emissions car at the 2012 United Nations Climate Change Conference (COP 18) in Doha. The car was designed and developed in Qatar.

Revealed during a press conference at the Qatar National Convention Centre, the car in addition to an internal combustion engine, includes an automotive thermoelectric generator designed to capture waste heat to produce hydrogen. GORD expects the heat waste collecting system to be compatible with any gasoline or compressed natural gas car.

GORD chairman Dr Al-Horr summarised the key concepts of the invention in a statement saying, “Our car produces electricity at no cost by capturing thermal waste energy, reducing costs and eliminating the need for an external source of electricity. Also, bulky compressed-hydrogen cylinders are a thing of the past, as our concept accomplishes the production of hydrogen by using water through fuel cells integrated within the car.”

Most of the energy in Qatari vehicle comes from the the car’s gasoline tank, supplemented by a thin film photo-voltaic panel on the roof. Normally in a combustion engine, chemical energy stored in a fuel, such as gasoline, is converted into heat energy through combustion. This heat energy is then converted into mechanical energy, manifested as an increase in pressure in the combustion chamber due to the kinetic energy of the combustion gases. The kinetic energy of these combustion gases are then converted into work; because of the inefficiencies in converting chemical energy into useful work, internal combustion engines have a theoretical maximum effiecincy of 37% (with what is achievable in day to day applications being about half of this). Of the chemical energy in the consumed fuel used by an internal combustion engine 40% is dissipated as waste heat. However, the Qatari vehicle uses a thermoelectric generator to convert this waste heat into electricity. Such generators are used in space vehicles, and produce electricity when thermoelectric materials are subjected to a temperature gradient, the greater the gradient the greater the amount of electrcity produced. In the GORD vehicle the electricity produced is used to electrolyse potable water to produce hydrogen which can be introduced into the vehicle’s existing fuel system.

The researchers showed that the heat waste collection engine caused a decrease in the car’s emissions, including a decrease of carbon monoxide and nitrous oxide emissions by more than 50%, the fuel efficiency increasing by 20%. On its website, GORD said that the heat waste collector engine is universal, “Any car can be adapted to accommodate the system as it doesn’t alter any electro-mechanical systems”.

Monday, August 14, 2006

Prime Minister Stephen Harper did not attend the 16th International AIDS Conference in Toronto. This is now drawing criticism from event organizers.

Harper said earlier when he was in the Canadian federal election, 2006, that he was not going to attend the AIDS conference. It is not known why he didn’t want to attend.

“We are dismayed that the prime minister of Canada, Mr. Stephen Harper, is not here this evening,” Dr. Mark Wainberg said at the Rogers Centre on yesterday. “Mr. Harper, the role of prime minister includes the responsibility to show leadership on the world stage. Your absence sends a message that you do not regard HIV/AIDS as a critical priority and clearly all of us here tonight disagree with you,” Wainberg said.

Wainberg was one of the first to speak and criticized the prime minister for missing the event.

Harper instead chose to tour the Arctic aboard a naval ship. He received many boos from the audience at the mention of his name, including a remark by Richard Gere (an American actor and a speaker at the event). A group near the stage stood up and chanted “Where is Harper?”

Canada’s health minister Tony Clement defended the prime minister’s absence, saying it doesn’t mean a lack of commitment in the fight against AIDS.

Tony Clement said the federal government has adequate representation at the international conference and it is committed to helping people around the world through an access-to-medicine program.