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Tuesday, July 3, 2012

The Marussia F1 team’s test driver, Spaniard María de Villota, was taken to hospital by air ambulance today after a collision in testing at Duxford Aerodrome.

At the end of her first installation run, the car she was driving had a low-speed collision with the loading ramp of the team’s support truck. According to BBC Cambridgeshire presenter Chris Mann, the car “suddenly accelerated” into the rear of the vehicle. The Marussia team released a statement an hour and a half after the accident, stating that she had been transferred to hospital, and a further statement would be issued once her condition had been assessed.

A spokesman for the East of England ambulance service, Gary Sanderson, said de Villota had “[…] sustained life-threatening injuries and following treatment at the scene by paramedics, she has been taken to Addenbrooke’s Hospital for further care.” According to witnesses, she was motionless for about fifteen minutes as medical teams attended to her, but did move her hands before being taken away from the test track. Medical charity Magpas, whose volunteer paramedics attended the accident, reported she had sustained injuries to her head and face, and was in a ‘stable condition’ when she reached the hospital.

Marussia reported her as conscious later in the afternoon: “Since Maria’s arrival at the hospital at approximately 10.45am this morning, she has been receiving the best medical attention possible at the hospital, which is the region’s major trauma centre. Maria is conscious and medical assessments are ongoing. The team will await the outcome of these assessments before providing further comment. The team’s first priority at this time is Maria and her family.”

De Villota was announced as Marussia’s test driver in March, having prior experience driving for Alan Docking Racing in Superleague Formula in Spain.

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.

Thursday, May 31, 2007

According to The Japan Times, the 20-year-old Japanese delegate Riyo Mori was crowned as the 56th Miss Universe, in a ceremony held at Mexico City on May 28 .

Riyo, the new Miss Universe titleholder, is from Shizuoka, Japan. She had stayed in Canada to study ballet while in high-school.After Riyo returned to her country, she became to an instructor of a dance school.

Riyo Mori achieved the brilliant feat of winning this beauty contest as Japanese after 48 years’ absence.Incidentally, preceded runner-up is Kurara Chibana.

Friday, February 16, 2018

On Tuesday, the city council of Berkeley, California adopted by unanimous vote a resolution declaring their city a “sanctuary” for adult recreational cannabis use and sale. The resolution by the Berkeley council “declared [the City of Berkeley] to be a sanctuary for recreational cannabis customers, providers, and landlords.”

The resolution bars city employees including police from assisting federal law enforcement officials, namely the U.S. Drug Enforcement Administration, in enforcing federal laws relating to cannabis. The city’s measure includes protection for cannabis, but not other substances controlled and regulated by the federal government. California voters approved a referendum in 2016 that legalized cannabis production and sale in the state. That law took effect on January 1 this year.

The resolution was drafted by Mayor Jesse Arreguin and Councilmembers Ben Bartlett and Cheryl Davila.

While cannabis became legal for adults at least 21 years old under California state law, it remains a prohibited substance under the federal Controlled Substances Act. Under the U.S. Constitution, federal law is given supremacy to contradictory state and local law.

In 2008, the city previously declared itself a sanctuary city for medical cannabis, opposing federal officials seeking to shutter legal-in-California cannabis dispensaries.

In a tweet following the vote, the Berkeley mayor wrote, “In light of threats by Attorney General [Jeff] Sessions regarding a misguided crackdown on our democratic decision to legalize recreational cannabis, we have become what may be the first city in the country to declare ourselves a sanctuary city for cannabis.” The attorney general is the top federal law enforcement official in the U.S.

Last month, Sessions repealed a policy from the previous presidential administration providing legal shelter to states that legalized recreational cannabis. A January 4 memo from Sessions called for Justice Department prosecutors to enforce the federal ban on cannabis use and sale.

By another vote during the same meeting the city council reduced the sales tax on cannabis from 10 percent to 5 percent in a bid to draw more business.

Thursday, January 25, 2018

In findings published Wednesday in the scientific journal Cell, a team of scientists from the Chinese Academy of Sciences in Shanghai, China have announced the first-ever cloning of a primate from post-embryonic cells, namely two macaque monkeys. They used somatic cell nuclear transfer, the same method that was used to create Dolly the sheep in 1996.

In somatic cell nuclear transfer, scientists remove the nucleus, which is the organelle that contains the chromosomes, from an unfertilized ovum, or egg cell, and implant the nucleus from a somatic cell, or non-reproductive cell, into that ovum. The ovum is then stimulated and develops in the normal way, growing into a whole organism that has the same nuclear DNA as the donor organism, though it will have all of the ovum’s mitochondria and other cellular machinery. Clones like these have been described as identical twins to their donors, but younger.

The scientists implanted 21 ova into surrogate mother monkeys, resulting in six pregnancies, two of which produced living animals. The young clones were named “Zhong Zhong” and “Hua Hua,” both derived from Zh?nghuá, the Chinese-language word for the Chinese people. They are both cynomolgus monkeys, or crab-eating macaques (Macaca fascicularis). The scientists also attempted to clone macaques using nuclei from adult donors. They implanted 42 surrogates, resulting in 22 pregnancies, but there were still only two infant macaques, and they died soon after birth. The Scotland-based team that created Dolly the sheep in 1996 required 277 attempts and produced only one lamb.

Generally, the older the donor organism, the more difficult it is to get the DNA from the harvested nucleus to reactivate the genes that allow the clone organism to grow. Previous efforts to clone rhesus monkeys (Macaca mulatta) using embryonic donor cells have been successful, but the current attempt used significantly older donors: fetal fibroblast cells, which are key cells in connective tissue, and adult monkey cumulus cells.

“We’re excited — extremely excited,” said study co-author Muming Poo. “This is really, I think, a breakthrough for biomedicine.” He went on to say that the cloned monkeys could be used as test subjects for the study of neurological diseases such as Parkinson’s and Huntington’s. Primates are already a popular model organism for neurological studies. In the United States, for example, non-human primates are used in less than 0.3% of all animal experiments, most of them involving neuroscience, and macaques in particular are a well-established animal model of atherosclerosis, which causes heart disease.

“I think it’s a very exciting landmark. It’s a major advance,” agreed reproductive biologist Dieter Egli of Columbia University. “It should be possible to make models of human disease in those monkeys and study those and then attempt to cure it.”

About 90% of the laboratory animals used in the United States are rodents. Although the first cloned mouse was born in 1998, cloned mice are not currently common in laboratory settings. This may be because producing inbred mouse lines is still relatively effective.

Although the announcement raised enthusiasm from researchers, it also drew caution from bioethicists. “Cloning one individual in the image of another really sort of demeans the significance of us as individuals,” says Harvard Medical School’s Dr. George Daley, speaking specifically of cloning humans. “There’s a certain sort of gut sense that it violates sort of natural norms.” While Muming Poo concedes it is now theoretically possible to clone a human, he says his lab has no plans to do so.

Although somatic cell nuclear transfer was used successfully in amphibians as early as 1952, getting it to work in mammals took much longer. Dolly, the first cloned mammal, was born in 1996. Teams have been trying to clone monkeys for decades, but primate DNA is notoriously difficult to work with. “The trick is we choose the right chemicals to turn on these genes we transfer into the egg,” Mu-ming Poo told the press. “So that’s what we did different. I think that’s the key.” One of the agents used to treat the ova was messenger RNA from the human Kdm4d gene.

Friday, February 10, 2006

The Council of Australian Governments (COAG) will meet in Canberra today for its first meeting of 2006. Members of COAG are the Prime Minister, State Premiers, Australian Capital and Northern Territory Chief Ministers, and the President of the Australian Local Government Association. COAG is chaired by the Prime Minister.

On the agenda is a wide range of issues such as health, economic reform, regulation, and education.

The state leaders (all of whom are members of the Australian Labor Party), met last night to develop a strategy for dealing with John Howard, Australia’s Prime Minister.