wired2tech.com

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.

Thursday, December 18, 2008

A team of eight transplant surgeons in Cleveland Clinic in Ohio, USA, led by reconstructive surgeon Dr. Maria Siemionow, age 58, have successfully performed the first almost total face transplant in the US, and the fourth globally, on a woman so horribly disfigured due to trauma, that cost her an eye. Two weeks ago Dr. Siemionow, in a 23-hour marathon surgery, replaced 80 percent of her face, by transplanting or grafting bone, nerve, blood vessels, muscles and skin harvested from a female donor’s cadaver.

The Clinic surgeons, in Wednesday’s news conference, described the details of the transplant but upon request, the team did not publish her name, age and cause of injury nor the donor’s identity. The patient’s family desired the reason for her transplant to remain confidential. The Los Angeles Times reported that the patient “had no upper jaw, nose, cheeks or lower eyelids and was unable to eat, talk, smile, smell or breathe on her own.” The clinic’s dermatology and plastic surgery chair, Francis Papay, described the nine hours phase of the procedure: “We transferred the skin, all the facial muscles in the upper face and mid-face, the upper lip, all of the nose, most of the sinuses around the nose, the upper jaw including the teeth, the facial nerve.” Thereafter, another team spent three hours sewing the woman’s blood vessels to that of the donor’s face to restore blood circulation, making the graft a success.

The New York Times reported that “three partial face transplants have been performed since 2005, two in France and one in China, all using facial tissue from a dead donor with permission from their families.” “Only the forehead, upper eyelids, lower lip, lower teeth and jaw are hers, the rest of her face comes from a cadaver; she could not eat on her own or breathe without a hole in her windpipe. About 77 square inches of tissue were transplanted from the donor,” it further described the details of the medical marvel. The patient, however, must take lifetime immunosuppressive drugs, also called antirejection drugs, which do not guarantee success. The transplant team said that in case of failure, it would replace the part with a skin graft taken from her own body.

Dr. Bohdan Pomahac, a Brigham and Women’s Hospital surgeon praised the recent medical development. “There are patients who can benefit tremendously from this. It’s great that it happened,” he said.

Leading bioethicist Arthur Caplan of the University of Pennsylvania withheld judgment on the Cleveland transplant amid grave concerns on the post-operation results. “The biggest ethical problem is dealing with failure — if your face rejects. It would be a living hell. If your face is falling off and you can’t eat and you can’t breathe and you’re suffering in a terrible manner that can’t be reversed, you need to put on the table assistance in dying. There are patients who can benefit tremendously from this. It’s great that it happened,” he said.

Dr Alex Clarke, of the Royal Free Hospital had praised the Clinic for its contribution to medicine. “It is a real step forward for people who have severe disfigurement and this operation has been done by a team who have really prepared and worked towards this for a number of years. These transplants have proven that the technical difficulties can be overcome and psychologically the patients are doing well. They have all have reacted positively and have begun to do things they were not able to before. All the things people thought were barriers to this kind of operations have been overcome,” she said.

The first partial face transplant surgery on a living human was performed on Isabelle Dinoire on November 27 2005, when she was 38, by Professor Bernard Devauchelle, assisted by Professor Jean-Michel Dubernard in Amiens, France. Her Labrador dog mauled her in May 2005. A triangle of face tissue including the nose and mouth was taken from a brain-dead female donor and grafted onto the patient. Scientists elsewhere have performed scalp and ear transplants. However, the claim is the first for a mouth and nose transplant. Experts say the mouth and nose are the most difficult parts of the face to transplant.

In 2004, the same Cleveland Clinic, became the first institution to approve this surgery and test it on cadavers. In October 2006, surgeon Peter Butler at London‘s Royal Free Hospital in the UK was given permission by the NHS ethics board to carry out a full face transplant. His team will select four adult patients (children cannot be selected due to concerns over consent), with operations being carried out at six month intervals. In March 2008, the treatment of 30-year-old neurofibromatosis victim Pascal Coler of France ended after having received what his doctors call the worlds first successful full face transplant.

Ethical concerns, psychological impact, problems 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 Iain Hutchison, of Barts and the London Hospital, 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.”

In Wednesday’s conference, Siemionow said “we know that there are so many patients there in their homes where they are hiding from society because they are afraid to walk to the grocery stores, they are afraid to go the the street.” “Our patient was called names and was humiliated. We very much hope that for this very special group of patients there is a hope that someday they will be able to go comfortably from their houses and enjoy the things we take for granted,” she added.

In response to the medical breakthrough, a British medical group led by Royal Free Hospital’s lead surgeon Dr Peter Butler, said they will finish the world’s first full face transplant within a year. “We hope to make an announcement about a full-face operation in the next 12 months. This latest operation shows how facial transplantation can help a particular group of the most severely facially injured people. These are people who would otherwise live a terrible twilight life, shut away from public gaze,” he said.

Sunday, December 5, 2010

Much of the interior of New South Wales, Australia continues to be affected by floods caused by heavy rains. With more rain predicted, the Australian Bureau of Meteorology has issued a flood watch for all western flowing rivers in New South Wales from the Namoi River in the north of the state to the Murrumbidgee River in the south.

Coonamble, in the central-western plains district of New South Wales, has been isolated by major flooding of the Castlereagh River. The State Emergency Service estimates that around 2,760 people are currently trapped in Coonamble. Mudgee, Canowindra, Eugowra, Dubbo, Wellington, and Young have also been severely affected.

A number of major highways in Western districts of the state have been closed or had diversions put in place, including the Newell Highway near Mirrool Bridge, the Castlereagh Highway between Gilgandra and Walgett, the Oxley Highway between Gilgandra and Warren, and the Lachlan Valley Way between 28km north of Cowra and 6km South Of Gooloogong. A number of local roads have also been affected.

Emergency Management NSW has declared the local government areas of Mid-Western Region, Weddin, Wellington, Warrumbungle, Cootamundra, Coonamble, Harden, and Young as natural disaster areas where significant damage to property and infrastructure has occurred.

Evacuation orders have been issued for parts of Wagga Wagga and parts of Coonamble due to flooding.

The SES is advising people who require assistance due to flooding to call 132 500 and to contact 000 for life threatening emergencies. For road closure information, residents are encouraged to contact their local council.

Wednesday, July 11, 2007

A fire broke out earlier today at an Airlines ramp control tower at the Miami International Airport. The building is currently being constructed. The fire is believed to have been sparked by hot roofing tar that spilled. The building is part of an expansion at the airport.

There fire is confined to the upper deck of the tower. There are no reports of flight delays because of the fire.

Monday, September 24, 2007

Marion Schaffer is running for the Green Party of Ontario in the Ontario provincial election, in the Oakville riding. Wikinews’ Nick Moreau interviewed her regarding her values, her experience, and her campaign.

Stay tuned for further interviews; every candidate from every party is eligible, and will be contacted. Expect interviews from Liberals, Progressive Conservatives, New Democratic Party members, Ontario Greens, as well as members from the Family Coalition, Freedom, Communist, Libertarian, and Confederation of Regions parties, as well as independents.

Saturday, April 2, 2005

Chicago city inspectors closed the landmark Lithuanian restaurant Healthy Food on Thursday, after finding mouse feces on the meat slicer and cutting board, and a dead mouse in the cooler.

The restaurant has operated at 3236 S. Halsted, on the south side of the city in the Bridgeport neighborhood, since the 1930s.

Wikinews reporter David Vasquez placed a call to the restaurant to inquire if they were open. The call was answered by a woman who said, “No, we’re closed. There’s some technical difficulties. I’m sorry. Thank you for calling.” A second phone could be heard ringing in the background.

Streets and Sanitation spokesman Matt Smith told the Chicago Sun-Times, “To reopen, they’re going to have to present us with a revamped game plan for not only rodent control but also housekeeping, they’ll have to make all the corrections that our inspectors point out,” he continued, “and pass a very stringent follow-up inspection.”

Patrons have praised the restaurant’s sauerkraut soup and other dishes over the years. Before it was closed, the restaurant had a lot of traffic from the nearby Cook County Circuit Court. The restaurant was once voted “Best Ethnic Eastern European Restaurant in Chicago”, according to New City.

Thursday, October 10, 2019

On Monday, United States District Court Judge Victor Marrero issued a ruling against President Donald Trump finding that New York City prosecutors could view his tax records after a subpoena issued by a grand jury. The Manhattan district attorney’s office is investigating Trump over alleged hush money paid to two women with whom he has been alleged to have had affairs. Such payments could be considered bribery. President Trump sued Manhattan District Attorney Cyrus R. Vance, Jr. and his own tax preparer Mazars USA to block the release of eight years of tax returns to the grand jury, but Judge Marrero dismissed the president’s lawsuit. The president’s legal team appealed the decision to the Second Circuit Court of Appeals, which issued an administrative stay to Marrero’s order about an hour and a half after the district court ruling.

The appeals court ruling placed a stay on the district court’s ruling until it hears arguments from the president’s lawyers and District Attorney Vance’s office. According to a court clerk, arguments in the case would be scheduled as soon as the week of October 21, with briefs from both parties due in the intervening time until then.

Trump had asked the United States District Court for the Southern District of New York intervene in a New York City criminal proceeding, in which a subpoena had been issued to Trump’s tax preparer. He sought such intervention to prevent Mazars from releasing his tax returns, arguing that, as president, he should be immune from prosecution, and that, by extension, his tax preparer, Mazars USA, could likewise be exempt from investigation. Marrero rejected this argument:

The notion of federal supremacy and presidential immunity from judicial process that the President here invokes, unqualified and boundless in its reach as described above, cuts across the grain of […] constitutional precedents. It also ignores the analytic framework that the Supreme Court has counseled should guide review of presidential claims of immunity from judicial process. Of equal fundamental concern, the President’s claim would tread upon principles of federalism and comity that form essential components of our constitutional structure and the federal/state balance of government powers and functions. Bared to its core, the proposition the President advances reduces to the very notion that the Founders rejected at the inception of the Republic, and that the Supreme Court has since unequivocally repudiated: that a constitutional domain exists in this country in which not only the President, but, derivatively, relatives and persons and business entities associated with him in potentially unlawful private activities, are in fact above the law.

Because this Court finds aspects of such a doctrine repugnant to the nation’s governmental structure and constitutional values, and for reasons further stated below, it ABSTAINS from adjudicating this dispute and DISMISSES the President’s suit.

Following Marrero’s order, the appeals court issued a stay, delaying Mazars’ compliance with the subpoena until it could review the case.

Trump responded to the ruling via Twitter, attacking the subpoena as a political strategy: “The Radical Left Democrats have failed on all fronts, so now they are pushing local New York City and State Democrat prosecutors to go get President Trump.”

The Manhattan district attorney’s office began its probe into Trump’s financial affairs after his former lawyer Michael Cohen was convicted of federal campaign finance law violations connected to payments made to porn actress Stormy Daniels and former Playboy model Karen McDougal to remain silent about alleged affairs with Trump. Cohen is serving a three-year-long prison sentence.

Trump has admitted to ordering the payments, according to prosecutors, but the U.S. Justice Department maintains a policy of not charging the sitting president with crimes.

In recent United States history, it has been customary, but voluntary, for presidential candidates to release their tax returns when running for office. Trump was the first president to refuse to do so since 1976. Trump has cited an Internal Revenue Service audit as prohibiting him from releasing them. The president has a lawsuit to prevent a New York State law from allowing the House of Representatives’ Committee on Ways and Means from gaining access to his records.