October 28, 2014

Click on WORD or PDF for full content

WORD

PDF

Interesting item in the NY Times Magazine asking if age is nothing but a mind set. Or course, you can take it too far, but some of these studies are good food for thought.

One day in the fall of 1981, eight men in their 70s stepped out of a van in front of a converted monastery in New Hampshire. They shuffled forward, a few of them arthritically stooped, a couple with canes. Then they passed through the door and entered a time warp. Perry Como crooned on a vintage radio. Ed Sullivan welcomed guests on a black-and-white TV. Everything inside — including the books on the shelves and the magazines lying around — were designed to conjure 1959. This was to be the men’s home for five days as they participated in a radical experiment, cooked up by a young psychologist named Ellen Langer.

The subjects were in good health, but aging had left its mark. “This was before 75 was the new 55,” says Langer, who is 67 and the longest-serving professor of psychology at Harvard. Before arriving, the men were assessed on such measures as dexterity, grip strength, flexibility, hearing and vision, memory and cognition — probably the closest things the gerontologists of the time could come to the testable biomarkers of age. Langer predicted the numbers would be quite different after five days, when the subjects emerged from what was to be a fairly intense psychological intervention.

Langer had already undertaken a couple of studies involving elderly patients. In one, she found that nursing-home residents who had exhibited early stages of memory loss were able to do better on memory tests when they were given incentives to remember — showing that in many cases, indifference was being mistaken for brain deterioration. In another, now considered a classic of social psychology, Langer gave houseplants to two groups of nursing-home residents. She told one group that they were responsible for keeping the plant alive and that they could also make choices about their schedules during the day. She told the other group that the staff would care for the plants, and they were not given any choice in their schedules. Eighteen months later, twice as many subjects in the plant-caring, decision-making group were still alive than in the control group.

To Langer, this was evidence that the biomedical model of the day — that the mind and the body are on separate tracks — was wrongheaded. The belief was that “the only way to get sick is through the introduction of a pathogen, and the only way to get well is to get rid of it,” she said, when we met at her office in Cambridge in December. She came to think that what people needed to heal themselves was a psychological “prime” — something that triggered the body to take curative measures all by itself. Gathering the older men together in New Hampshire, for what she would later refer to as a counterclockwise study, would be a way to test this premise. …

 

… Langer did not try to replicate the study — mostly because it was so complicated and expensive; every time she thought about trying it again, she talked herself out of it. Then in 2010, the BBC broadcast a recreation, which Langer consulted on, called “The Young Ones,” with six aging former celebrities as guinea pigs.

The stars were squired via period cars to a country house meticulously retrofitted to 1975, right down to the kitschy wall art. They emerged after a week as apparently rejuvenated as Langer’s septuagenarians in New Hampshire, showing marked improvement on the test measures. One, who had rolled up in a wheelchair, walked out with a cane. Another, who couldn’t even put his socks on unassisted at the start, hosted the final evening’s dinner party, gliding around with purpose and vim. The others walked taller and indeed seemed to look younger. They had been pulled out of mothballs and made to feel important again, and perhaps, Langer later mused, that rekindling of their egos was central to the reclamation of their bodies.

The program, which was shown in four parts and nominated for a Bafta Award (a British Emmy), brought new attention to Langer’s work. Jeffrey Rediger, a psychiatrist and the medical and clinical director of Harvard’s McLeanHospital, was invited by a friend of Langer’s to watch it with some colleagues last year. Rediger was aware of Langer’s original New Hampshire study, but the made-for-TV version brought its tantalizing implications to life.

“She’s one of the people at Harvard who really gets it,” Rediger told me. “That health and illness are much more rooted in our minds and in our hearts and how we experience ourselves in the world than our models even begin to understand.” …

 

 

Scientific American says we might see more propeller driven aircraft.

The debut of propeller-driven aircraft kicked off a global aerospace technology boom that continues to this day. But since the emergence of the jet aircraft engine during World War II, research into propeller-powered flight has often taken a backseat to the turbofan technology that carries jetliners faster and farther. Speed and range come at a cost, however, and both rising fuel prices and increased demand for regional air travel have changed the economics of flight over the past 10 years. Now airlines are once again looking to smaller, more efficient turboprop planes to handle shorter routes, driving the development of a new generation of prop-driven aircraft technologies poised to take wing by the end of the decade. …

… Among those paving the way for a new generation of turboprops, General Electric Aviation’s Dowty Propellers is exploring anew the interactive effects among the propeller, engine nacelle and aircraft wing. Using computational fluid dynamics tools that were not available even a few years ago, engineers at the Gloucester, England–based firm are not only designing blades with new efficiency-enhancing shapes but rethinking the layout of the propeller as a whole.

“The computational power that’s avail- able now has really made the difference,” says Dowty’s Jonathan Chestney, noting that researchers can analyze data on an individual-blade basis. “It’s an exciting time for us,” he remarks. “We’re able to see much more detail, like a scientist who just got a microscope for the first time.” …

 

 

We have had items before on China’s aircraft carrier. War is Boring says things are not going well with the craft.

There’s no more of a conspicuous and potent symbol of China’s growing naval power than the aircraft carrier Liaoning.

But the 53,000-ton, 999-foot-long carrier could be dangerous to her crew and prone to engine failures. If so, that makes the vessel as much of a liability as an asset to Beijing.

The ex-Soviet carrier once went by the name Varyag until a cash-strapped Ukraine sold the ship to Beijing in 1998. The Chinese navy has since invested considerable resources into modernizing the warship and testing her at sea.

But on at least one occasion during recent sea trials, Liaoning appeared to suffer a steam explosion which temporarily knocked out the carrier’s electrical power system. …

… Engine failures are not an unknown phenomenon aboard ex-Soviet carriers. The 40,000-ton displacement Indian carrier Vikramaditya—first a Soviet Kiev-class carrier commissioned in 1987 and sold in 2004—temporarily shut down at sea after a boiler overheated two years ago.

The 50,000-ton Russian carrier Admiral Kuznetsov also goes nowhere without a tug escort in case her engines break down while underway. …

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>