Sunday, October 21, 2007

Nemisis turns 100


100 years later, laundry may be easier but have we saved any time?

A century after the first electric washing machines promised to take the work out of laundry, it doesn't seem like today's multi-cycle magicians are saving us much time.

Sure we don't have to boil the water and lug it by hand over to big metal tubs. Nor do we have to strain our arms running sopping wet clothes through a wringer thanks the advent of the spin cycle.

But, somehow, the pile of washing has managed to grow ever larger with every seemingly time-saving advance.

"It used to be that people used to let their clothes get really dirty before they washed them," said Susan Strasser, author of "Never Done: a history of American housework."

"Now, we use a towel once and we throw it in the wash."

Laundry was always the most dreaded household chore and the first to be offloaded whenever women had enough extra money to send it out.

It took hours to haul the water from a well, heat it on a stove, soak and scrub the clothes, and then wring them out with hands that became raw and chapped from the hot water and caustic cleaning agents like lye and lime.

Then the clothes and linens had to be hung on a line and pressed with an iron heated on the stove or fire.

While laundry tools are nearly as old as the chore itself, H. Sidgier of Great Britain is credited with inventing the first washing machine in 1782: a cage of wooden rods with a handle for turning.

But the scrub board, invented in 1797, proved far more popular until machines with drums and clothes wringers emerged about 50 to 60 years later.

By the turn of the 19th century, hundreds of companies were selling washing machines with ad campaigns promising to eliminate the drudgery of "blue Mondays."

The Nineteen Hundred Washer Company, which later became Whirlpool, even stamped "Save Women's Lives" on the side of their machines.

"They said they were guaranteed to prevent farm women from committing suicide," said Lee Maxwell, a retired engineering professor who runs a museum in Colorado with over 1,000 antique washing machines.

"The ads would try to get at the emotions of the man ... because the work of farm women was unbearable."

But laundry was still exhausting, and dangerous, work.

Water still had to be heated, hauled and drained, the crank was still turned by hand and women often got their fingers or hair caught in the wringer.

Ads for electric washing machines first started emerging in 1906, cutting down on the muscle power needed to agitate the clothes. An electric wringer soon followed, as did water pumps and heaters.

They were of little use for most people until the 1920's and 1930's when running water and electricity reached the American masses.

In 1922, Maytag introduced the first finned agitator which forced water through the clothes rather than dragging the clothes through the water.

A popular innovation, the company is now the oldest America washing machine brand and celebrates its 100th anniversary this month.

But even so, washing machines ended up making more work for a lot of women, rather than less.

"Obviously it made housework easier, but it meant commercial laundries stopped being used so it brought the work back to the household," said Strasser, who is a history professor at the University of Delaware.

In 1937, Bendix introduced the first automatic washing machine which could wash, rinse and spin dry in one cycle.

By the 1950s washing machines were ubiquitous, and available in a range of colors from pastels to gold and coffee tones.

About 95 percent of US households now own at least one washing machine and growing number are installing a second unit in the closets of master bedrooms, according to Appliance magazine.

Increased energy efficiency and new functions such as larger-capacity front loaders and quieter cycles has also spurred sales, with nearly 9.5 million washers and eight million dryers shipped to US stores last year.

Friday, October 19, 2007

Still second class citizens (Don't get me started)



Equal pay for women in science is achievable : Nature News
Equal pay for women in science is achievable

Aggressive academic management can correct pay disparities between male and female scientists, say researchers. Their study assesses the effects of intervention to equalize salaries at the University of Arizona's College of Medicine in Tucson between 2000 and 2004 (A. L. Wright et al. J. Gen. Intern. Med. 22, 1398–1402 ; 2007). By 2004, women with basic science doctorates, for instance, were paid 97.6% of the amount men were paid.

HPV test beats Pap in detecting cervical cancer



Study: HPV test beats Pap in detecting cervical cancer
A new study led by McGill University researchers shows that the human papillomavirus (HPV) screening test is far more accurate than the traditional Pap test in detecting cervical cancer. The first round of the Canadian Cervical Cancer Screening Trial (CCCaST), led by Dr. Eduardo Franco, Director of the Division of Cancer Epidemiology at McGill's Faculty of Medicine, concluded that the HPV test's ability to accurately detect pre-cancerous lesions without generating false negatives was 94.6%, as opposed to 55.4% for the Pap test.
The results of the study, first-authored by Dr. Franco’s former McGill PhD student Dr. Marie-Hélène Mayrand of the Centre hospitalier de l'Université de Montréal (CHUM), with colleagues from McGill, Université de Montréal, the Newfoundland and Labrador Public Health Laboratory and McMaster University, are published in the October 18 issue of The New England Journal of Medicine.

Adapting to stress



Stress: Brain yields clues about why some succumb while others prevail
Results of a new study may one day help scientists learn how to enhance a naturally occurring mechanism in the brain that promotes resilience to psychological stress. Researchers funded by the National Institutes of Health’s National Institute of Mental Health (NIMH) found that, in a mouse model, the ability to adapt to stress is driven by a distinctly different molecular mechanism than is the tendency to be overwhelmed by stress. The researchers mapped out the mechanisms – components of which also are present in the human brain – that govern both kinds of responses.
In humans, stress can play a major role in the development of several mental illnesses, including post-traumatic stress disorder and depression. A key question in mental health research is: Why are some people resilient to stress, while others are not? This research indicates that resistance is not simply a passive absence of vulnerability mechanisms, as was previously thought; it is a biologically active process that results in specific adaptations in the brain’s response to stress.

Happiness



Happiness comes cheap - even for millionaires
A bar of chocolate, a long soak in the bath, a snooze in the middle of the afternoon, a leisurely stroll in the park. These are the things that make us the most happy, according to new research from The University of Nottingham.
In a study commissioned by the National Lottery, Dr Richard Tunney of the University's School of Psychology found that it's the simple things in life that impact most positively on our sense of well being.

The study compared the 'happiness levels' of lottery jackpot winners with a control group, using a 'Satisfaction with Life Scale' developed by the University of Illinois. Respondents were asked how satisfied they were in relation to different elements of their life, their different mood states explored, how often they treated themselves and what form this took.

Surprisingly, it wasn't the flashy cars and diamond jewellery that upped the jackpot winners' happiness quotient. It was the listening to music, reading a book, or enjoying a bottle of wine with a takeaway that really made the difference.

Grey dimensions



Brightness and darkness as perceptual dimensions
A common-sense assumption concerning visual perception states that brightness and darkness cannot coexist at a given spatial location. One corollary of this assumption is that achromatic colors, or perceived grey shades, are contained in a one-dimensional (1-D) space varying from bright to dark.
The results of many previous psychophysical studies suggest, by contrast, that achromatic colors are represented as points in a color space composed of two or more perceptual dimensions. The nature of these perceptual dimensions, however, presently remains unclear.

Huh?


FDA to Warn Viagra Users of Hearing Loss

Viagra pill


Viagra and other impotence drugs are about to bear new warnings that users may experience sudden hearing loss.

It's not clear that the drugs truly trigger hearing loss, but the Food and Drug Administration decided Thursday to add a warning about the possible risk after counting 29 reports of the problem since 1996 among users of this family of medicines.

The impotence drugs Viagra, Cialis and Levitra will bear the warnings. So will Revatio, a drug for pulmonary hypertension, which contains the same ingredient as Viagra.

More good news


New malaria drug works in infants


Scientists say a new malaria vaccine being tested in Mozambique was successful in protecting infants less than 1 year old.

The study, published in The Lancet, was intended to show the safety of the vaccine. GlaxoSmithKline researchers also found that the full course of three shots reduced the risk of catching malaria by 65 percent, The New York Times said.

The efficacy data is consistent with the estimate of 45 percent reduction in new infections reported in a 2004 trial in Mozambique among children one to four years old, GlaxoSmithKline said Thursday in a release.

"We're now a step closer to the realization of a vaccine that can protect African infants," said Dr. Pedro Alonso, the University of Barcelona professor who leads clinical trials of the vaccine.

Three fish in a tree? How can that be?




Killifish can adapt to life in a tree

Biologists in Belize and Florida have discovered that the mangrove killifish lives in trees when the water they usually live in has disappeared.

Tuesday, October 16, 2007

Finally, a competent replacement for Greenspan




What chimpanzees can teach us about economics

In a long-standing enigma of economics and psychology, humans tend to immediately value an item they've just been given more highly than the maximum amount they would have paid if they had acquired it themselves. This tendency, known as the endowment effect, is something some economists consider a fluke, but new research finds that humans aren't the only ones exhibiting an endowment effect.

Well, you can't think without it


Blood may help us think

MIT scientists propose that blood may help us think, in addition to its well-known role as the conveyor of fuel and oxygen to brain cells.

"We hypothesize that blood actively modulates how neurons process information," explains Christopher Moore, a principle investigator in the McGovern Institute for Brain Research at MIT, in an invited review in the Journal of Neurophysiology. "Many lines of evidence suggest that blood does something more interesting than just delivering supplies. If it does modulate how neurons relay signals, that changes how we think the brain works."

According to Moore's Hemo-Neural Hypothesis, blood is not just a physiological support system but actually helps control brain activity. Specifically, localized changes in blood flow affect the activity of nearby neurons, changing how they transmit signals to each other and hence regulating information flow throughout the brain. Ongoing studies in Moore's laboratory support this view, showing that blood flow does modulate individual neurons.

Moore's theory has implications for understanding brain diseases such as Alzheimer's, schizophrenia, multiple sclerosis and epilepsy. "Many neurological and psychiatric diseases have associated changes in the vasculature," says Moore, who is also an assistant professor in MIT's Department of Brain and Cognitive Sciences.

"Most people assume the symptoms of these diseases are a secondary consequence of damage to the neurons. But we propose that they may also be a causative factor in the disease process, and that insight suggests entirely new treatments." For example, in epilepsy people often have abnormal blood vessels in the brain region where the seizures occur, and the hypothesis suggests this abnormal flow may induce epileptic onset. If so, drugs that affect blood flow may provide an alternative to current therapies.

The hypothesis also has important implications for functional magnetic resonance imaging, or fMRI, a widely used brain scanning method that indicates local changes in blood flow. "Scientists looking at fMRI currently regard blood flow and volume changes as a secondary process that only provides read-out of neural activity," explains Rosa Cao, a graduate student in Moore's lab and co-author of the paper. "If blood flow shapes neural activity and behavior, then fMRI is actually imaging a key contributor to information processing."

Again, studies in Moore's lab support this interpretation. For example, his fMRI studies of the sensory homunculus - the brain's detailed map of body parts like fingers, toes, arms, and legs- show that when more blood flows to the area representing the fingertip, people more readily perceive a light tap on the finger. This suggests that blood affects the function of this brain region and that information about blood flow can predict future brain activity. This finding does not undermine prior studies, but adds another, richer layer to their interpretation and makes fMRI an even more useful tool than it already is.

How could blood flow affect brain activity? Blood contains diffusible factors that could leak out of vessels to affect neural activity, and changes to blood volume could affect the concentration of these factors. Also, neurons and support cells called glia may react to the mechanical forces of blood vessels expanding and contracting. In addition, blood influences the temperature of brain tissue, which affects neural activity.

To Moore's knowledge, the Hemo-Neural Hypothesis offers an entirely new way of looking at the brain. "No one ever includes blood flow in models of information processing in the brain," he asserts. One historical exception is the philosopher Aristotle, who thought the circulatory system was responsible for thoughts and emotions. Perhaps the ancient Greeks were on to something.

This work was funded by Thomas F. Peterson, the Mitsui Foundation and the McGovern Institute for Brain Research at MIT.

Source: MIT

Sleepin' with the fishes

Still in love with Bucky Balls after all these years




Bouncing Bucky Balls
from PhysOrg.com - latest science and technology news
C60 molecules have an intriguing ball-shaped structure that suggests several interesting possibilities for motion on surfaces. Indeed, researchers have found that the passage of electrons through a bucky ball in a transistor is correlated to the spinning of the ball around its center of mass. Moreover, since bucky balls look like molecular ball bearings, it has been thought that they may be useful as lubricants for use in automobile brakes.
http://www.physorg.com/printnews.php?newsid=111731655

Gorts rock



MAKE: Blog: Gort
YouTube - Gort Burning Man
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It's like...




Mind Hacks: Dissolve Mental Blocks By Thinking Metaphorically
from Lifehacker by Wendy Boswell

Sometimes, the solution to becoming more creative can't be arrived at by traditional thinking. Writing pro Copyblogger suggests that we try to frame ideas in a metaphorical way instead in order to see angles we might not have come up with otherwise. Why? Because logical thinking tends to follow a linear pattern, while metaphors are symbolic—which can potentially unlock our creative side. How do you unleash that creativity inside of you? Let's hear in the comments.
Do You Recognize These 10 Mental Blocks to Creative Thinking? [Copyblogger]

CureHunter




Information: Explore Medical Terms Visually with Curehunter

If you're researching medical terms, you might want to check out Curehunter, a medical dictionary that allows you to search for disease, drug, or therapy information. Type in any term that fits in these parameters, and you'll get in-depth explanations as well as a visual "tree" of related terms. Click on any of these terms to explore relationships; not all of them are necessarily absolutely relevant to your original query, but they do provide good fodder for further research.

CureHunter [via Research Buzz]


Visual Medical Dictionary | CureHunter
Drug-disease relationship network appears here.