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Tuesday, June 2, 2009

American Secretary of Energy Steven Chu is cutting US$100 million dollars from hydrogen fuel cell vehicle research and diverting the remaining $69 million to hydrogen fuel cell research for household current.

Former president George W. Bush advocated the zero-emission vehicles and launched $1.2 billion for hydrogen fuel cell research over a number of years.

President Barack Obama is proposing a “corporate average fuel economy,” or CAFÉ, placing standards for gas mileage at 39 miles per gallon for cars and light trucks at 30 mpg.

“The probability of deploying hydrogen-fuel-cell vehicles in the next 10 to 20 years is low.” said Tom Welch of the U.S. Department of Energy. “We asked ourselves, ‘Is it likely in the next 10 or 15, 20 years that we will convert to a hydrogen car economy?’ The answer, we felt, was ‘no,'” said Chu.

In response, the U.S. Fuel Cell Council and the National Hydrogen Association said, “The cuts proposed in the DOE hydrogen and fuel-cell program threaten to disrupt commercialization of a family of technologies that are showing exceptional promise and beginning to gain market traction. Fuel-cell vehicles are not a science experiment. These are real vehicles with real marketability and real benefits. Hundreds of fuel-cell vehicles have collectively logged millions of miles.”

“I just got the Clarity, which is a wonderful hydrogen vehicle,” said Governor Arnold Schwarzenegger. He lent his car to The Hydrogen Road Tour.

On Tuesday, The Hydrogen Road Tour began in Chula Vista, California. Twelve hydrogen fuel cell cars by seven auto makers will arrive in Vancouver, British Columbia June 3 for the Hydrogen + Fuel Cells 2009 conference, a global hydrogen and fuel cell event. “The point really is to raise awareness about fuel celled vehicles and hydrogen, their benefits both to energy efficiency and the environment as well as to consumers because we really believe these vehicles are going to be a market winner,” said Catherine Dunwoody, the Executive Director of the California Fuel Cell Partnership.

The Hydrogen Fuel Cells 2009 conference began June 1. “Our global environmental challenges, such as climate change, do not stop at the border,” ” said John Tak, conference Chair, “I am pleased that scientists, engineers, government representatives and businesspeople from more than 35 countries are coming to Vancouver, an active hub for hydrogen and fuel cell development, to help create solutions to these challenges.”

The Ohio Fuel Cell Symposium was held in North Canton, Ohio on Wednesday and Thursday. “The hydrogen and fuel cell industries are at a stage where they have the momentum and energy to accomplish some truly revolutionary things in terms of how they apply their technologies,” said William Whittenberger, president of Catacel Corp. These fuel cells produce electricity and exhaust carbon dioxide and water.

A hydrogen powered municipal street cleaning vehicle is currently being tested for the next year and half in Basel, Switzerland. “Our aim is to take fuel cell technology from the laboratory onto the street,” said Empa’s Internal Combustion Engines Laboratory Project Leader Christian Bach.

Dan Lutz, the fleet manager for the Beloit, Wisconsin public works department, experimented with retro-fitting his personal truck. The department now has a large pickup truck, a garbage truck, a recycling truck, a police squad car and a small pickup truck using hydrogen technology increasing gas mileage from 14 to 22 and 31 mpg. “We know the basic technology works, but the issue is, is it practical,” said City Manager Larry Arft, “Can it be used realistically?”

The drawback is that the technology may rely on platinum, a rare metal, or palladium. Infrastructure would need to be changed to supply hydrogen fueling stations. Critics are also concerned about hydrogen fuel storage and the costs of retro-fitting existing vehicles.

Tuesday, June 7, 2011

British media has reported that Prince William and his recently wedded wife, Kate, are to move their London residence into Kensington Palace, close to Hyde Park.

Two units in the Palace, labeled Apartments 8 and 9, were previously occupied by Prince Charles and Diana, William’s parents, when they married in 1981. Prince William and his brother Prince Harry went to nursery and school nearby. Diana also lived in Kensington Palace after her separation and divorce from Prince Charles.

However, the newlyweds will not live in Apartments 8 and 9, as they are currently being used as office space. They will instead live in a small apartment that was previously occupied by staff. The palace has undergone some renovations, including asbestos removal.

The couple is also set to choose one “housekeeper-dresser”, who will provide valet service for the Duchess of Cambridge. Kate will continue to buy her own clothes, and the new servant is not to be seen as a “stylist”. The position has been advertised internally within Buckingham Palace.

The Duke and Duchess of Cambridge are expected to move within a few weeks, before they leave on a trip to Canada and the United States. The London residence is expected to be used only as a starter home for about a year. The couple will keep their permanent residence without personal staff in Anglesey, Wales, where William serves on the Royal Air Force as a search-and-rescue pilot. They will continue to run their Household Office at St James’s Palace.

Wednesday, June 12, 2013

In May, periodical cicadas with 17 years life cycle emerged on the East Coast of the USA after underground development as juveniles since 1996. Researchers and scientists worked to map and study the rare wave, and the locals prepared for the noisy event. First recorded in 1666, the Magicicada septendecim species recently emerged in 1979, 1996, this year, with a next wave due in 2030.

This week, Wikinews interviewed Chris Simon, an ecology and evolutionary biologist at University of Connecticut, about the cicadas.

((Wikinews)) What caused your initial interest in periodical cicadas?

Chris Simon: As an undergraduate student, I was interested in the formation of species so when I went to graduate school I looked for a study organism that was likely to be in the process of forming new species. I chose periodical cicadas because they are broken up into reproductively isolated broods (or year classes). Reproductive isolation leads to speciation so I planned to study biochemical differences among the broods.

((WN)) You study the emergence of the periodical cicadas. What do you study? What observations are you making?

CS: We record exactly where each cicada population emerges (using GPS automated mapping and crowd sourcing). We record the presence or absence of each of the three morphologically distinct species groups of periodical cicadas (Decim group, Cassini group, and Decula group). We collect specimens for DNA analysis. We look for cicadas coming up one and four years early and late. We dig up cicada nymphs and monitor their growth rates.

((WN)) What equipment do you use?

CS: Nets, shovels, automated GPS recorders, cameras, laptop computers, automated DNA sequencers.

((WN)) Do you study the periodical cicadas with anyone else? What is their role?

CS: Yes, there are a large number of people studying periodical cicadas in my lab and in other labs. My lab is made up of Research Scientists, Postdoctoral Researchers, a technician, graduate students, and undergraduates. Research Scientist John Cooley is the leader of the GPS mapping project; he invented the automated GPS recorder; he built our crowd-sourcing website, and he is instrumental in public outreach. Postdoctoral research David Marshall also participates in the mapping project and leads the part of the research related to the mapping of stragglers. John and Dave and Technician Kathy Hill all study periodical cicada mating behavior and conduct mating and hybridization experiments. One of my graduate students Beth Wade has participated in the nymph collections and will soon start genetic work involving genome wide association mapping designed to locate genes related to life cycle. My graduate student Russ Meister is studying the genes of the bacterial endosymbionts of cicadas. My current undergraduate honors student Erin Dwyer is also studying the development of Magicicada nymphs and is helping to design a lab exercise for college students around the eastern US to do the same. Many of my past undergraduate students have studied the biochemical genetics and development of periodical cicadas. See the Simon Lab website.

CS: We are collaborating with Teiji Sota at the University Kyoto and Jin Yoshimura at Shizuoka University in Japan. They are studying the phylogeography of Magicicada. We are collaborating with John McCutcheon of the University of Montana who is studying the endosymbiont genomes.

CS: We are also collaborating with ecologists Rick Karban and Louie Yang, both professors at UC Davis who have an interest in cicada population dynamics and nutrient cycling in the ecosystem.

((WN)) You studied the periodical cicadas in 1979 and 1996 too. What changes with time?

CS: I have studied periodical cicadas since I was a student back in 1974. What changes with time is increased human development constantly shrinking the patch size of cicada populations.

((WN)) What are your thoughts on the long life span of the periodical cicadas? Why could it be so? What advantages and what disadvantages does it have?

CS: Most or all cicadas have long life cycles compared to your typical annual insect. Examples have been found of two-year to 9-year cycles in different species. Periodical cicadas evolved an even-longer life cycle and I think that part of this relates to the evolution of their synchronized life cycles and peculiar safety-in-numbers strategy for survival. To become synchronized, periodical cicadas had to evolve an exact length life cycle and all adults would have to appear in the same year. Because the nymphs grow at different rates underground, a longer life cycle and a way of counting years must have evolved so that the individuals that get to the last nymphal (underground juvenile) stage first would wait long enough for all other individuals in the population to become ready to emerge.

((WN)) News reports mention this is ‘Brood II’ of the periodical cicadas. What are the distinctive features of this specific species and what is its full scientific name?

CS: The same species exist in multiple broods. No species is restricted to Brood II. The three species present in Brood II are: Magicicada septendecim, M. cassini, and M. septendecula. These same three species are found in every 17-year brood (except the farthest north which only has M. septendecim).

((WN)) At what depth do the cicadas juveniles live underground?

CS: Most live within the top foot of soil but some have been found deeper. We do not know if they go deeper in winter. We need to do much more digging to understand the nymphs.

((WN)) How do people prepare for the cicada emergence?

CS: Of course various people prepare in different ways. Ideally, everyone prepares by studying information available on the web (especially on our websites Magicicada Central and Magicicada.org).

((WN)) Do cicadas affect transport in the local area?

CS: No, not really. Occasionally individuals can be seeing flying across highways and sometimes they smash into cars.

((WN)) Do cicadas usually stay outside or do they also invade houses too?

CS: They stay outside. One might accidentally fly in through an open window but that would be rare.

((WN)) What do the cicadas eat?

CS: Cicadas suck xylem fluid (the watery fluid coming up from the roots of plants) in deciduous forest trees and herbs. Essential amino acids in the cicada diet are supplied by their bacterial endosymbionts. There are two species of endosymbionts. One makes 8 essential amino acids and one makes two essential amino acids.

((WN)) Do cicadas damage crops or city vegetation? What damage?

CS: Cicadas do not chew leave so they do not damage crops like other insects. They can inflict some damage by their egg laying. Cicadas lay eggs in pencil-sized tree branches. If there are not enough branches available, too many female cicadas may lay eggs in a single branch weakening it and making it susceptible to breakage by wind. This can sometimes cause damage in fruit orchards. If the branches break, the eggs die so this behavior is selected against by natural selection.

((WN)) Thank you.

CS: You’re welcome. I am happy to have this opportunity to communicate with your readers!

Monday, February 16, 2009

The United States military Strategic Command (STRATCOM) has said that the ‘fireballs’ spotted over areas of Texas in the United States on Sunday February 15, are not related to the collision of a U.S. and Russian satellite in space. According to spaceweather.com, NASA says the object was a meteor.

“There is no correlation between the debris from that collision and those reports of re-entry,” said STRATCOM military spokeswoman Major Maj. Regina.

“It’s a natural meteor, definitely,” said Bill Cooke, an astronomer at NASA’s Meteoroid Environment Office.

On Tuesday, February 10, the American civilian communications satellite Iridium 33, launched in 1997, and the defunct Russian military communications satellite Kosmos-2251, launched in 1993, collided over Siberia. On Friday February 13, the National Oceanic and Atmospheric Administration (NOAA) issued an alert for falling debris from the satellites, following reports of “explosions and earthquakes” along with “flashes in the sky” in Jackson and Louisville, Kentucky.

Then again on Sunday, calls to 9-1-1 began to come in to Williamson County, Texas sheriff’s office around 12:30 p.m. (Central time) that burning debris and fireballs were seen falling from the sky onto parts of Austin, Houston, Waco and San Antonio.

“The Federal Aviation Administration (FAA) reported to local law enforcement on Friday that these events are being caused by falling satellite debris. These pieces of debris have been causing sonic booms, resulting in vibrations felt by some residents, as well as flashes of light across the sky,” said the NOAA on Friday in an public information alert posted on their website. The FAA says the burning material over Texas is not related to this alert.

“We don’t know what it was [over Texas],” said Roland Herwig, a spokesman for the FAA on Monday. The alerts still remain in effect in Kentucky until further notice.

Residents in Texas reported their homes and windows shaking and large explosions on Sunday morning. After a search of several areas, the Williamson county sheriff’s office reported that no debris or impact sites were found. Earlier unconfirmed reports had said the debris could have been the result of a small plane exploding.

There was previous speculation was that the object in Texas could have been a meteor. Doctor Marco Ciocca, a professor at Eastern Kentucky University told WKYT on Sunday that it’s too early for the debris from the satellites to be reentering the planet’s atmosphere. “[It could] be months” before any of the satellite wreckage enters the earth’s atmosphere. “The debris doesn’t simply fall out of its orbit. It will either vaporize or stay in orbit for some time before falling into earth’s atmosphere.”

However, the Union of Concerned Scientists (UCS) said on February 12 that the debris could have taken 10 days or less to reenter over portions of the planet.

“Within 24 hours of the collision, the U.S. space tracking system had identified 600 pieces of debris. This large number suggests that the collision must have been relatively head-on. If the two satellites hit head-on, rather than a glancing blow, the energy of the collision would completely disintegrate both satellites into clouds of debris,” said the UCS in a statement on their website who also added that the collision took place in “the same region of space where China destroyed a defunct Chinese weather satellite with an anti-satellite (ASAT) weapon” in 2007. “That January 2007 test created a massive amount of debris.” There have been at least eight major satellite collisions since 1991.

The satellites, both of which had a mass in excess of 450 kilograms, and were traveling at approximately 17,500 miles per hour (28,150 km/hour), collided 491 miles (790 km) above the earth. Scientists say the explosion caused by the collision was massive. They are still trying to determine just how large the crash was and how the earth will be affected. STRATCOM continues to track the debris. The results of a plotting analysis will be posted to a public website.

April 6, 2005

On April 4, the Federal Highway Administration released an interim report on leaks in the Central Artery Tunnel, part of Boston’s Big Dig. The press release about the report claims that the report “concludes that the project is structurally sound and remains safe for traffic.” However, the report does not reach those conclusions.

The report does not evaluate the current safety level of the tunnel; and on the subject of safety, it notes that ensuring the safety of the tunnel will require speedy implementation of a permanent repair of last September’s major leak. The safety claim is repeated and touted as a “rare bit of good news” about the Big Dig in an Associated Press story by Steve Leblanc.

The Central Artery Tunnel, which allows Interstate 93 to pass beneath downtown Boston, experienced a 300 gallon-per-minute leak of water into the tunnel in September of 2004, according to the recent report. Mac Daniel of the Boston Globe notes in a recent article that the September leak caused “a 10-mile traffic jam”.

In response to the leak, the Federal Highway Administration formed the Tunnel Leak Assessment Team to provide an independent assessment of the leaking in the tunnel and the efficacy of the repairs underway.

The report reaches three main conclusions:

• “Chronic low level leaks” continue, but sealing work is expected to seal them “in the summer of 2005”.
• A temporary repair of the major leak which occurred in mid-September, 2004, has been completed, and permanent repairs are “under review”.

  Regarding permanent repairs, it adds, “Whichever option is selected must be implemented quickly to ensure the safe and uninterrupted passage of the traveling public.”

• “Additional defects” have been discovered in the slurry wall panels where September’s major leak occurred.

  In response to these discoveries, the report recommends, “The Project is encouraged to quickly complete the inspection of all panels and develop a standardized inspection process and related documentation.”

According to the New York Times, Matthew Amorello, chairman of the Massachusetts Turnpike Authority, praised the report, stating that, “This independent affirmation that the I-93 tunnels are safe and structurally sound will allow drivers to use them with confidence.”

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, March 30, 2017

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