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.

Tuesday, September 1, 2020

In Australian rugby, University have maintained top spot on the Sunshine Coast Rugby Union A grade ladder with a 22 points to 10 win over Maroochydore at Cotton Tree, Australia on Saturday.

“We turned up here knowing we’d be in for a battle”, University coach Brad Tronc said. “They pushed [reigning premiers] Caloundra and they pushed Noosa. We knew the were looking for a scalp. To Maroochydore’s credit, they’ve made some big improvements since last season. I think as the season goes on they’ll keep getting better and better, as well.”

The game was a hard, physical match according to Maroochydore assistant coach Ben Radmall. “It was pretty set piece dominated there for the last twenty minutes”, Radmall said. “[It was] a pretty physical game out there this afternoon. It was a good hit out. We’re sore after that one.”

University were able to pull away in the second half despite an off day in front of goal.

“The two guys that set [Uni’s final try] up were an 18 year old half back and an 18 year old five eighth,” Tronc said.

Radmall conceded that his side needed to work on some things. “We had our opportunities in the 22 in that last twenty minutes”, he said. “Just some management, couple of set pieces let us down. We couldn’t execute there and they exited pretty well. They slowed the game down pretty well in that last ten minutes to dance up the field and then score a try at the end there.”

Wednesday, May 5, 2010

Protestors in Greece, rallying against austerity measures, have clashed with police in the capital of Athens.

Some people participating in the rally — attended by thousands of teachers and students — threw stones at riot police, who responded by employing pepper spray, although the BBC described the protests as being generally peaceful. Demonstrators say that a recent austerity proposal, which is to include pension cuts and an increase in taxes, will adversely affect the education sector.

Teachers, along with hospital workers and public servants, have started a two-day strike over the measures. Also present were 150 members of the armed forces, who protested having their bonuses lowered.

Meanwhile, earlier on Tuesday, approximately a hundred demonstrators with the Communist Party broke through locks at the Acropolis and hung up banners saying: “Peoples of Europe — Rise Up”.

Communist Member of Parliament Nikos Papaconstantinou commented: “We want to send a message to the farthest reaches of Greece and Europe. Similar measures that eliminate social security are taken across Europe. But popular anger will rattle imperialist organisations.”

The austerity plan comes shortly after the Greek government said it would introduce spending cuts to obtain a loan package by the EU and International Monetary Fund, aimed at helping Greece recover from a financial crisis.

Wednesday, January 27, 2016

On Sunday, Manchester United announced the loan of their Spanish goalkeeper Víctor Valdés to Belgian club Standard Liège for the rest of the season.

Last year, Valdés signed an 18-month contract with the English club, but the three-time UEFA Champions League winner was given very little opportunity at Old Trafford. He made only two appearances for The Reds last season, after David de Gea was injured. Relations between Manchester United manager Louis van Gaal and Valdés were not good. Van Gaal did not pick him for the pre-season tour to the United States, saying Valdés was unwilling to play a game with the under-21 team.

This season, Valdés was not allowed in the locker room, and van Gaal prevented him from training with the main squad and the under-21 team. The official team photograph omitted him.

Valdés was a member of Spain’s squad for the World Cup in 2010 and for Euro 2012, collecting a winner’s medal both times. Per Manchester United’s statement, “Manchester United and Standard Liege have reached agreement for the temporary transfer of goalkeeper Victor Valdes, effective until the end of the current season. The deal is subject to formalities being completed.”

On Instagram, he posted a photo that read “Thank you all for your support during these months of hard work for me, i will never forget! See you soon!”

Thursday, June 23, 2011

NASA’s Cassini–Huygens spacecraft has discovered evidence for a large-scale saltwater reservoir beneath the icy crust of Saturn’s moon Enceladus. The data came from the spacecraft’s direct analysis of salt-rich ice grains close to the jets ejected from the moon. The study has been published in this week’s edition of the journal Nature.

Data from Cassini’s cosmic dust analyzer show the grains expelled from fissures, known as tiger stripes, are relatively small and usually low in salt far away from the moon. Closer to the moon’s surface, Cassini found that relatively large grains rich with sodium and potassium dominate the plumes. The salt-rich particles have an “ocean-like” composition and indicate that most, if not all, of the expelled ice and water vapor comes from the evaporation of liquid salt-water. When water freezes, the salt is squeezed out, leaving pure water ice behind.

Cassini’s ultraviolet imaging spectrograph also recently obtained complementary results that support the presence of a subsurface ocean. A team of Cassini researchers led by Candice Hansen of the Planetary Science Institute in Tucson, Arizona, measured gas shooting out of distinct jets originating in the moon’s south polar region at five to eight times the speed of sound, several times faster than previously measured. These observations of distinct jets, from a 2010 flyby, are consistent with results showing a difference in composition of ice grains close to the moon’s surface and those that made it out to the E ring, the outermost ring that gets its material primarily from Enceladean jets. If the plumes emanated from ice, they should have very little salt in them.

“There currently is no plausible way to produce a steady outflow of salt-rich grains from solid ice across all the tiger stripes other than salt water under Enceladus’s icy surface,” said Frank Postberg, a Cassini team scientist at the University of Heidelberg in Germany.

The data suggests a layer of water between the moon’s rocky core and its icy mantle, possibly as deep as about 50 miles (80 kilometers) beneath the surface. As this water washes against the rocks, it dissolves salt compounds and rises through fractures in the overlying ice to form reserves nearer the surface. If the outermost layer cracks open, the decrease in pressure from these reserves to space causes a plume to shoot out. Roughly 400 pounds (200 kilograms) of water vapor is lost every second in the plumes, with smaller amounts being lost as ice grains. The team calculates the water reserves must have large evaporating surfaces, or they would freeze easily and stop the plumes.

“We imagine that between the ice and the ice core there is an ocean of depth and this is somehow connected to the surface reservoir,” added Postberg.

The Cassini mission discovered Enceladus’ water-vapor and ice jets in 2005. In 2009, scientists working with the cosmic dust analyzer examined some sodium salts found in ice grains of Saturn’s E ring but the link to subsurface salt water was not definitive. The new paper analyzes three Enceladus flybys in 2008 and 2009 with the same instrument, focusing on the composition of freshly ejected plume grains. In 2008, Cassini discovered a high “density of volatile gases, water vapor, carbon dioxide and carbon monoxide, as well as organic materials, some 20 times denser than expected” in geysers erupting from the moon. The icy particles hit the detector target at speeds between 15,000 and 39,000 MPH (23,000 and 63,000 KPH), vaporizing instantly. Electrical fields inside the cosmic dust analyzer separated the various constituents of the impact cloud.

“Enceladus has got warmth, water and organic chemicals, some of the essential building blocks needed for life,” said Dennis Matson in 2008, Cassini project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

“This finding is a crucial new piece of evidence showing that environmental conditions favorable to the emergence of life can be sustained on icy bodies orbiting gas giant planets,” said Nicolas Altobelli, the European Space Agency’s project scientist for Cassini.

“If there is water in such an unexpected place, it leaves possibility for the rest of the universe,” said Postberg.

Monday, October 11, 2010

Wikinews interviewed author Amy Scobee about her book Scientology – Abuse at the Top, and asked her about her experiences working as an executive within the organization. Scobee joined the organization at age 14, and worked at Scientology’s international management headquarters for several years before leaving in 2005. She served as a Scientology executive in multiple high-ranking positions, working out of the international headquarters of Scientology known as “Gold Base”, located in Gilman Hot Springs near Hemet, California.

Wednesday, January 3, 2007

An infectious superbug spreading in the United States is to “emerge in force” in Canada, doctors fear. The bacteria have been reported popping up in day care centers and locker rooms across the U.S. Usually elderly or very ill hospital patients get the disease.

More than 2 million U.S. residents are infected every year, the Centers for Disease Control estimates.

An article in the Canadian Medical Association Journal (CMAJ) on Tuesday said that Methicillin-resistant Staphylococcus aureus (MRSA) are “spreading with alarming rapidity.” The bacteria can cause boils, pimples, or in extreme cases, flesh-eating disease, and more.

“The resistant bacteria is an old foe with new fangs: a pathogen combining virulence, resistance and an ability to disseminate at large,” wrote Dr. John Conly, medical professor and an infectious disease specialist at the University of Calgary.

British Columbia, Alberta, Saskatchewan, Manitoba, and Ontario are the provinces which already have had MRSA in hospitals.

A 30-year-old Calgary, Alberta man died last year of lung abscesses associated with the infection, as well as a three-month old toddler in Toronto, Ontario.

Toronto Blue Jays outfielder Alex Rios, last summer, suffered from an infection caused by Staphylococcus aureus in his leg. Pitcher Ty Taubenheim had a similar infection on his foot.

Doctors are currently investigating some Calgary residents, who could be one of the first Canadian reports of MRSA outside of a hospital setting.

Friday, October 14, 2016

Yesterday, English capital football club Chelsea FC announced a long-term deal with US sports company Nike.

Currently, German company Adidas made the kits for The Blues, a deal worth £30 million annually. Chelsea’s contract with Adidas runs till 2023. Chelsea is obliged to pay about £40 million to the German firm. Chelsea’s termination of Adidas’s contract was announced in May.

Per the contract with the US company, Chelsea would receive a reported sum of £60 million each year. Announcing a long term contract, Nike Brand president Trevor Edwards said, “The partnership with Chelsea reinforces our leadership position in football. We are excited to help grow the club’s global reach, serving players and supporters with Nike innovation and design.”

Chelsea director Marina Granovskaia, for the team’s part, said, “This is an incredibly exciting and important deal for the club.”

Chelsea won the Premier League in 2014–15 under Portuguese manager José Mourinho but they finished tenth last season.

Adidas and Spanish club Real Madrid signed a ten year contract earlier this year and the German sports brand sponsors other football giants like FC Bayern München, Juventus F.C., A.C. Milan, and Manchester United F.C.