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Thursday, February 24, 2005

A paste containing synthetic tooth enamel can seal small cavities without drilling. Kazue Yamagishi and colleagues at the FAP Dental Institute in Tokyo say that the paste can repair small cavities in 15 minutes.

Currently, fillers don’t stick to such small cavities so dentists must drill bigger holes. Hydroxyapatite crystals, of which natural enamel is made, bond with teeth to repair tiny areas of damage.

Yamagishi and colleagues have tested their paste on a lower premolar tooth that showed early signs of decay. They found that the synthetic enamel merged with the natural enamel. The synthetic enamel also appears to make teeth stronger which will improve resistance to future decay. As with drilling, however, there is still the potential for pain: The paste is strongly acidic to encourage crystal growth and causes inflammation if it touches the gums.

The paste is reported in the journal Nature.

Friday, February 12, 2010

British fashion designer Alexander McQueen has died at the age of 40. He was found dead inside his residence in London, England yesterday.

The Metropolitan Police said they are not treating the death as suspicious. A spokesperson for the police force said, “[w]e were called by London Ambulance Service at about 10.20am this morning to reports of a man found dead at an address in Green Street, W1. He is believed to be 40 years old and from London. Next of kin have been informed, however we await formal identification before releasing the name of the deceased.” According to reports, McQueen committed suicide by hanging, however this has not been confirmed.

Between the years of 1996 and 2003, McQueen received Fashion Designer of the Year four times. He was also given a CBE by Queen Elizabeth II in 2003. The fashion designer had a new selection of clothing, entitled “McQ”, that was expected to be shown on Thursday; the show has now been cancelled. Alexander’s mother Joyce died earlier this month. In response to this, McQueen placed a message on his Twitter page which said “RIP mumxxxxxxxxxxxxxxxxxxxxxxxxxxx.” Isabella Blow, who assisted in making McQueen famous, killed herself in 2007.

Yesterday, a statement was released from McQueen’s company headquarters stating “On behalf of Lee McQueen’s family, Alexander McQueen today announces the tragic news that Lee McQueen, the founder and designer of the Alexander McQueen brand, has been found dead at his home. At this stage it is inappropriate to comment on this tragic news beyond saying that we are devastated and are sharing a sense of shock and grief with Lee’s family. Lee’s family has asked for privacy in order to come to terms with this terrible news and we hope the media will respect this.”

Thursday, October 22, 2020

2020 Melbourne Lord Mayor candidate Wayne Tseng answered some questions about his campaign for the upcoming election from Wikinews. The Lord Mayor election in the Australian city is scheduled to take place this week.

Tseng runs a firm called eTranslate, which helps software developers to make the software available to the users. In the candidate’s questionnaire, Tseng said eTranslate had led to him working with all three tiers of the government. He previously belonged to the Australian Liberal Party, but has left since then, to run for mayorship as an independent candidate.

Tseng is of Chinese descent, having moved to Australia with his parents from Vietnam. Graduated in Brisbane, Tseng received his PhD in Melbourne and has been living in the city, he told Wikinews. Tseng also formed Chinese Precinct Chamber of Commerce, an organisation responsible for many “community bond building initiatives”, the Lord Mayor candidate told Wikinews.

Tseng discussed his plans for leading Melbourne, recovering from COVID-19, and “Democracy 2.0” to ensure concerns of minorities in the city were also heard. Tseng also focused on the importance of the multi-culture aspect and talked about making Melbourne the capital of the aboriginals. Tseng also explained why he thinks Melbourne is poised to be a world city by 2030.

Tseng’s deputy Lord Mayor candidate Gricol Yang is a Commercial Banker and works for ANZ Banking Group.

Currently, Sally Capp is the Lord Mayor of Melbourne, the Victorian capital. Capp was elected as an interim Lord Mayor in mid-2018 after the former Lord Mayor Robert Doyle resigned from his position after sexual assault allegations. Doyle served as the Lord Mayor of Melbourne for almost a decade since 2008.

Friday, March 20, 2009

Following the Pilkhana massacre which occurred February 25 and 26 leaving 74 dead and the inferno at the Bashundhara City shopping mall complex March 13 leaving seven dead, Prime Minister Sheikh Hasina said security measures are being tightened countrywide across Bangladesh.

Fire drills will be enacted at all key-point installations (KPI). Fire fighting systems will be examined by the fire brigade and the public works department (PWD) to ensure functionality. Security measures will be enhanced supplementing areas under private security such as at the Bashundhara City Complex.

The Fire Service and Civil Defence Department requires modernization and needs new equipment to fight fires past the sixth floor of buildings. The Fire Brigade says it needs turntable ladders, snorkels, foam-tenders, lighting units, emergency tenders, fireproof uniforms, and rescue ropes for fire fighting and rescue operations. Transportation to fires is also an issue due to narrow roads, low electrical wires and congestion.

The Bangladesh National Building Code requires fire fighting equipment installed in buildings over seven floors. This code is to be monitored by authorities to ensure compliance with the new guidelines and to make sure buildings are being maintained.

The Bashundhara City Complex opened Monday for shoppers two days after Friday’s blaze. A probe is underway to determine the cause of the fire and to assess structural damage.

Loss of life was minimized as the blaze broke out on a Friday, the beginning of the weekend in Bangladesh, so offices in the upper floors were empty. The lower eight floors are used for shopping and the upper floors are all Bashundhara Group offices.

The mall is valued at Tk 7.0 billion (US$100 million). It is not known if the complex is covered by fire insurance.

It is estimated that it will take over two years to rebuild the area damaged by flames which were burned down to a skeleton. Bashundhara City’s technical advisor, Latifur Rahman, estimated damages at Tk 2.0 billion (US$29m).

Only one television cameraman has been allowed in to film the burnt area. None of the 2,500 shops, cinemas or cafes were burnt by the inferno. The seventh and eighth floors still experience smoke damage, and there was water damage to merchandise.

A three member committee is currently investigating the cause of the fire which will consist of Iqbal Khan Chowdhury, joint secretary of the ministry, representatives of the police, IGP Noor Muhammad, and fire brigade, Director General Abu Nayeem Md Shahidullah. The committee is required to report within the week with their findings. The forensics department is also sifting through the burnt remains.

The Dhaka Chamber of Commerce and Industries has also formed a committee which has begun interviewing witnesses and recording their testimony alongside the government committee.

It has been discovered that 150 closed circuit cameras were not being used when the fire started. Another mystery is why the mall fire fighting system has been found unused.

“In the shopping mall there is an ultra-technology elevator which runs even without electricity but we have found that locked,” Iqbal Khan Chowdhury, joint secretary (Police) of the home ministry, said. “Why the fire burnt so fiercely is a matter to think. We have to see if there was any incendiary substance there. These matters seem to be mysterious.”

Mall management has been asked to submit substances and items which would have been in the upper floors when the fire started. The fire erupted on the 17th floor and spread quickly to the two floors above and engulfed the three floors below. The aerial ladders belonging to the Fire Service and Civil Defence reached as high as the 13th floor of the 21-storey building.

Videos have been sent to the United States (US) for examination to assist in determining the cause of the fire and to help in the damage assessment. Experts from the US are expected to arrive soon.

Firefighters were brought to the rooftop of the 20-storey tower by helicopter. The only fatality in this operation was Baki Billa, a firefighter of Bashundhara City firefighting department, who fell when climbing down a rope from a helicopter to the roof of the building. Three other firefighters made the transition safely. At this same time, the chief security officer was safely rescued by the Bangladesh Air Force helicopter, a Bell 212. Six security officers of the complex also lost their lives.

Friday, April 8, 2005Professor Perry Bartlett of University of Queensland‘s Brain Institute recommends sex, cryptic crosswords and a good run to stave off dementia.

The researcher, interviewed on Australian ABC radio today [1], said that with 52,000 Australians expected to be diagnosed with dementia by the end of the year, people wishing to ward off the degenerative disorder may benefit from activities which stimulate growth of new cells in the brain, accompanied by mental exercise to select for survival of the resulting crop of new cells.

“Quite prolonged exercise is very good to make new neurones,” said the Professor. “These new nerve cells are really quite vital to our ability to function in the higher brain functions, such as memory and learning. Most of them die. We now know that we can preserve some of them by giving direct stimuli.”

Professor Bartlett explained recent research findings, including those from collaborator Jeffrey D. Macklis [2] at Harvard in the US.

“There are a lot of hormones and changes in blood that go up and down after exercise, and so that may be a lead to some of the chemicals that can drive the production of nerve cells.

“One of the chemicals that seems to promote neurogenesis is prolactin, and prolactin levels are very high in pregnant females. Prolactin levels, by the way, also go up during sex as well. So one could think of a number of more entertaining activities than running in order to regulate the production of nerve cells.

“Perhaps doing something a little more inquisitive or intellectual might be good at selecting their survival. So perhaps one should run a long distance and do the cryptic crossword or something like that,” he said.

Professor Bartlett gave the same suggestions as being potentially helpful in depression, last year in an interview on the ABC Science Show. [3]

A compilation of brief news reports for Friday, May 15, 2009.

California governor Arnold Schwarzenegger proposed budget cuts and layoffs for California yesterday.

Californian education budgets would be cut by $3 billion USD for the next five years if California voters gave a yes votes to the budget-related measures for May 19’s special election.

Schwarzenegger is also ready to sell state properties including the San Quentin State Prison and the Los Angeles Coliseum to raise money for the state.

Sources

• Associated Press. “Schwarzenegger Proposes Layoffs, Deep Budget Cuts” — FOXNews.com, 14 May 2009
• Christie, Jim. “California governor sees $15.4 billion gap, urges deep cuts” — Reuters, 14 May 2009

Nintendo DS sales hit one million units last April. However, even with Nintendo’s moderate success with their DS gaming system, all video game sales have declined 17%.

GameSpot writer Tor Thorsen claims that Nintendo DSi, the current release of the Nintendo DS, is an acronym for “Dominating Sales in America.”

Sources

• Thorsen, Tor. “NPD: US April sales slide 17%, DS tops 1 million” — GameSpot, 14 May 2009
• “UPDATE 1-U.S. video game sales down 17 pct in April-NPD” — Reuters, 14 May 2009

Eight-time gold medalist Michael Phelps, in a recent conference Thursday, told reporters he will enter a swimming competition today.

This is Phelps’ first swim meet since he was photographed with a marijuana pipe in his mouth.

Phelps will swim the 200-meter freestyle and 100-meter butterfly races.

After the marijuana pipe photo was released, Phelps was unsure of whether he would swim again.

Sources

• Crouse, Karen. “Phelps Has Company on Comeback Trail in Charlotte” — The New York Times, 14 May 2009
• Newberry, Paul. “Phelps ready for 1st race since Beijing” — Associated Press, 14 May 2009

Saturday, January 26, 2008

Investigators examining the wreck of British Airways Flight 38, a Boeing 777 that crash landed short of the runway at London’s Heathrow Airport in the first hull loss of a 777, are examining the aircraft’s fuel system as a possible factor in the crash. No-one was killed as the scheduled flight from Beijing, China lost power during final approach on January 17.

136 passengers and 16 crew were on board when power was lost to the two Rolls-Royce engines about two miles from the runway, at a height of 600 feet. Autopilot and autothrottle were engaged at the time, the latter having just commanded an increase of thrust to the engines when power was lost. Co-pilot John Coward, in control at the time, was subsequently praised for being able to glide the disabled plane to within 1,000 feet of the runway, clearing a number of houses along the way.

Subsequent investigation has revealed that not only did the engines not fail simultaneously, but neither failed completely, contradicting initial belief. A preliminary report by the United Kingdom’s Aircraft Accident Investigation Branch (AAIB) stated that after the autothrottle commanded more thrust “The engines both initially responded but after about 3 seconds the thrust of the right engine reduced. Some eight seconds later the thrust reduced on the left engine to a similar level… Both engines continued to produce thrust at an engine speed above flight idle, but less than the commanded thrust.” This situation prevailed until impact.

On Wednesday the AAIB stated that they were examining “All possible scenarios that could explain the thrust reduction and continued lack of response of the engines.” However, it also went on to specifically mention attention to the jet’s fuel system, saying “This work includes a detailed analysis and examination of the complete fuel-flow path from the aircraft tanks to the engine-fuel nozzles.” The AAIB also ruled out the plane having completely run out of fuel, stating that there was “adequate fuel” in the tanks when the plane crashed. In addition to the fuel required to get to the target destination or emergency alternative airport – whichever is further – aircraft typically carry between thirty and forty-five minutes worth of extra fuel as a safety margin.

Possible scenarios being examined include fuel contamination, coming either from fuel taken on at Beijing or leakage from an unknown source. In particular, a heavy contaminant at the bottom of the tanks would explain a lack of earlier problems on the flight, as the fuel levels would only have become low in the final stages of the trip. Another possibility is that a central part of the fuel system developed a leak, reducing the amount of fuel available to the engines.

It is known that, according to the AAIB, “the autothrottle and engine-control commands were performing as expected prior to, and after, the reduction in thrust,” suggesting that all software in the aircraft was functioning correctly and rendering a software failure unlikely, although this possibility also remains under investigation.