SCI/TECH/PSY: # Liars Can’t Suppress All Facial Expressions, # # # # Bold New Wind Farm Design More Efficient
JUL 13
Recent Comment”It strikes me that this negates one of the advantages that HAWTs give …”
| Caltech Study Says Vertical Axis Wind Turbines 10X More Efficient Than Horizontal Axis Turbines |
| Written by Megan Treacy on 13/07/11 | |
![]() Wind energy production has so far been dominated by the horizontal axis wind turbine (HAWT). They can be scaled up to reach high in the air where the wind blows faster and produce a lot of energy per turbine (a 10 MW turbine is not far away), but researchers at Caltech say that vertical axis wind turbines (VAWTs) may actually be the better choice. A recent study of turbine placement and output found that because VAWTs can be placed closer together, they’re capable of generating ten times as much energy per square meter than HAWTs. In a series of field tests that placed six VAWTs in different configurations, it was found that a spacing of four turbine diameters apart (about five meters) got rid of any aerodynamic interference between the turbines. HAWTs require 20 turbine diameters of spacing in order to eliminate aerodynamic interference, equaling more than a mile between each turbine. The six VAWTs were able to produce 21 to 47 watts of power per square meter, while a comparable HAWT farm only produces about two to three watts per square meter. The study also found that having each VAWT spin in the opposite direction of its neighbor allowed them to spin faster because the opposing spins reduced the drag on each turbine, which upped their efficiency even more. To add to the list of benefits, VAWTs are also cheaper, smaller and less intrusive, allowing them to be installed in lots of places where large HAWTs just wouldn’t do. via Caltech |
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Tech News Headlines
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Heavy Relative of the Neutron Discovered
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Scientists Create Vaccine Against Heroin High
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Animal Model Sheds Light on Rare Genetic Disorder, Signaling Pathway
July 21, 2011 — Scientists have developed a mouse model of focal dermal hypoplasia, a rare human birth defect that causes serious skin abnormalities and other medical problems. This animal model not only provides insight into studying the cause of focal dermal … > full story -
Fast Prediction of Axon Behavior: Computer Modeling Method May Lead to More Accurate and Capable Electrodes to Stimulate Nerves
July 21, 2011 — Researchers have developed a computer modeling method to accurately predict how a peripheral nerve axon responds to electrical stimuli, slashing the complex work from an inhibitory weeks-long process to just a few … > full story -
Alzheimer’s Research; Alzheimer’s; Chronic Illness; Health Policy; Diseases and Conditions; Disorders and Syndromes;
Health Gains from Multiple Sclerosis Drugs Come at a High Price, Study Finds
July 21, 2011 — A new study shows that the health gains associated with a category of medications commonly used to treat multiple sclerosis (MS) — know as disease modifying drugs — come at a very high cost when compared to therapies that address the symptoms of … > full story
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Diseases and Conditions; Genes; Personalized Medicine; Sickle Cell Anemia; Human Biology; Breast Cancer;
Genetic Map of African-Americans to Aid Study of Diseases, Human Evolution
July 21, 2011 — A group of researchers has constructed the world’s most detailed genetic map, a tool scientists can use to better understand the roots of disease and how DNA is passed generationally to create diversity in the human species. Almost every prior … > full story -
Exploring Keys to Melanoma Progression
July 21, 2011 — Researchers made an important discovery about proteins that underlie and stimulate melanoma, opening the door for a more targeted treatment in the … > full story -
New Breast Cancer Drug: Promising Results of PI3K Inhibitor Study
July 21, 2011 — A new drug targeting the PI3K gene in patients with advanced breast cancer shows promising results in an early phase I investigational study, according to a recent … > full story -
Disputes Over Content of Wikipedia Articles Reflect a Country’s Geopolitical Instability, Study Finds
July 21, 2011 — Disputes over the content of articles in the internet encyclopaedia Wikipedia can serve as an indicator for the political stability of a country. This was proposed based on a “Wikipedia Dispute Index” developed by researchers in Germany. … > full story -
E-Cigarette or Drug Delivery Device? Questions About Safety, Usage and Future Implications of New Nicotine Delivery Products
July 21, 2011 — Devices marketed as “electronic cigarettes” are in reality crude drug delivery systems for refined nicotine, posing unknown risks with little new benefits to smokers, according to tobacco control experts. In a new article, researchers explore the … > full story
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Attention Deficit Disorder; Personalized Medicine; Diseases and Conditions; Sickle Cell Anemia; Anemia; Genes;
As New Data Wave Begins, a Gene Study in One Disease Reveals Mutations in an Unrelated Disease
July 20, 2011 — Researchers seeking rare gene variants in just a few individuals with ADHD discovered that one patient had a novel combination of two mutations. Those mutations caused an unrelated disease, the blood disorder idiopathic hemolytic anemia. That … > full story -
Seeing the S-Curve in Everything
July 20, 2011 — Esses are everywhere. From economic trends, population growth, the spread of cancer, or the adoption of new technology, certain patterns inevitably seem to emerge. A new technology, for example, begins with slow acceptance, followed by explosive … > full story -
EHEC 2011 Outbreak: Scientists Publish Prospective Genomic Characterization
July 20, 2011 — Scientists have released a draft genome sequence of a German enterohemorrhagic E. coli 2011 outbreak strain, and now report on an in-depth genomic characterization of this … > full story -
Technology to Throw New Light on Ancient Artifacts
July 20, 2011 — New technology which makes it possible to study the finer details of some of the world’s greatest historical artifacts has been developed by computer scientists and … > full story -
Work Engagement, Job Satisfaction, and Productivity: They’re a Virtuous Cycle
July 20, 2011 — Engaged workers — those who approach their work with energy, dedication, and focus — are more open to new information, more productive, and more willing to go the extra mile. Moreover, engaged workers take the initiative to change their work … > full story
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Mental Health Research; Diseases and Conditions; Pharmacology; Chronic Illness; Lung Disease; Personalized Medicine;
Cancer Drugs May Help Treatment of Schizophrenia
July 20, 2011 — Researchers have revealed the molecular pathway that is affected during the onset of schizophrenia and successfully alleviated symptoms of the illness in mice, using a commonly used cancer … > full story -
At Small Scales, Tug-of-War Between Electrons Can Lead to Magnetism
July 20, 2011 — At the smallest scales, magnetism may not work quite the way scientists expected, according to a recent … > full story -
Biology; Erectile Dysfunction; Mating and Breeding; Developmental Biology; Prostate Cancer; Stem Cells;
Gene Required to Maintain Male Sex Throughout Life Discovered: Loss of Gene Dmrt1 Leads to Male Cells Becoming Female
July 20, 2011 — Researchers have made a key discovery showing that male sex must be maintained throughout life. Removing an important male development gene, called Dmrt1, causes male cells in mouse testis to become female … > full story -
Agriculture and Food; Insects (and Butterflies); Invasive Species; Exotic Species; Mating and Breeding; Animals;
How the Honey Bee Tolerates Some Synthetic Pesticides
July 20, 2011 — A new study reveals how enzymes in the honey bee gut detoxify pesticides commonly used to kill mites in the honey bee hive. This is the first study to tease out the precise molecular mechanisms that allow a pollinating insect to tolerate exposure to … > full story -
Team Sports: For Kids, It’s More Than Just a Game
July 20, 2011 — A cohesive team environment, assessing one’s own performance rather than comparing with others, and involvement in enjoyably challenging practices are the main conditions needed for children to have a positive developmental experience playing team … > full story
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Newly Designed Molecule Blocks Chlamydia Bacteria
July 20, 2011 — Researchers have discovered a way to block the damaging actions of Chlamydia, the bacteria responsible for the largest number of sexually transmitted infections in the United … > full story -
Fundamental Constants ‘Change’: Gravity Weaker, Electromagnetic Force Stronger, According to Latest Recommended Values
July 20, 2011 — The electromagnetic force has gotten a little stronger, gravity a little weaker, and the size of the smallest “quantum” of energy is now known a little better. NIST has posted the latest internationally recommended values of the fundamental … > full story -
Improved Method to Create Induced Pluripotent Stem Cells
July 20, 2011 — Researchers have developed a new strategy to improve the development of induced pluripotent stem cells. Researchers found that by fusing two proteins – a master stem cell regulator (Oct4) and a fragment of a muscle cell inducer (MyoD) – … > full story -
The Tallest Tree in All the Land
July 20, 2011 — Knowing how tall trees can grow in any given region can give ecologists a wealth of information, from the potential density of a forest and size of its tree canopy to the amount of carbon stored in woodlands and the overall health of an ecosystem. … > full story -
Educational Policy; Educational Psychology; Sleep Disorders; Insomnia; Obstructive Sleep Apnea; Relationships;
New Sexting Laws Put College Students at Risk: More Than Half of All College Students Have Been ‘Sexted’
July 20, 2011 — More than half of all college students have received sexually suggestive images via text messaging, and nearly 80 percent have received suggestive messages, according to new … > full story
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Inherited Alzheimer’s Detectable 20 Years Before Dementia
July 20, 2011 — Inherited forms of Alzheimer’s disease may be detectable as many as 20 years before problems with memory and thinking develop, scientists … > full story -
New Graphene Discovery Boosts Oil Exploration Efforts, Could Enable Self-Powered Microsensors
July 20, 2011 — Researchers have developed a new method to harvest energy from flowing water. The research team demonstrated how the flow of water over surfaces coated with the nanomaterial graphene could generate small amounts of … > full story -
Household Smoke Increases Severity of Bronchiolitis in Babies
July 20, 2011 — A new study has found that babies admitted to hospital with bronchiolitis from a household where a parent smokes are twice as likely to need oxygen therapy and five times as likely to need mechanical ventilation as babies whose parents do not … > full story -
Pharmacology; Chemistry; Geochemistry; Environmental Issues; Organic Chemistry; Inorganic Chemistry;
Environmental Pollutants Lurk Long After They ‘Disappear’
July 20, 2011 — Scientists say that current environmental tests look for specific drugs — but these drugs break down into other chemicals through sun exposure or oxidation. In their new and equally lethal forms, they don’t show up in tests, so they pose a hidden … > full story -
Rock-Paper-Scissors Players Are Natural Copycats
July 20, 2011 — Players of the game rock paper scissors subconsciously copy each other’s hand shapes, significantly increasing the chance of the game ending in a draw, according to new … > full story
Health & Biomedical Sciences
Health & Medicine
When Injured Muscles Mistakenly Grow Bones: Researchers Discover Brain Chemical That Causes Strange, Serious Complication
- Gene Therapy to Reverse Heart Failure Ready for Clinical Trials; Therapeutic Effectiveness and Safety of ‘Next Great Thing in Heart Failure’ Demonstrated
- Animal Model Sheds Light on Rare Genetic Disorder, Signaling Pathway
- Genetic Map of African-Americans to Aid Study of Diseases, Human Evolution
- Exploring Keys to Melanoma Progression
- more stories
Mind & Brain
Health Gains from Multiple Sclerosis Drugs Come at a High Price, Study Finds
- E-Cigarette or Drug Delivery Device? Questions About Safety, Usage and Future Implications of New Nicotine Delivery Products
- As New Data Wave Begins, a Gene Study in One Disease Reveals Mutations in an Unrelated Disease
- Inherited Alzheimer’s Detectable 20 Years Before Dementia
- Time and Numbers Mix Together in the Brain
- more stories
Living Well
Caffeine Consumption Linked to Female Infertility, Study Suggests
- Work Engagement, Job Satisfaction, and Productivity: They’re a Virtuous Cycle
- Team Sports: For Kids, It’s More Than Just a Game
- New Sexting Laws Put College Students at Risk: More Than Half of All College Students Have Been ‘Sexted’
- Stated Calories on Menus of Certain Restaurants Appear to Be Accurate Overall
- more stories
Biological & Earth Sciences
Plants & Animals
Mother Knows Best for Urban Fox Families
Earth & Climate
Full Moon Indicates Impending Danger from Lion Attack, Study Shows
Fossils & Ruins
Technology to Throw New Light on Ancient Artifacts
Physical & Applied Sciences
Space & Time
NASA’s Opportunity Tops 20 Miles of Mars Driving
Matter & Energy
At Small Scales, Tug-of-War Between Electrons Can Lead to Magnetism
- Fundamental Constants ‘Change’: Gravity Weaker, Electromagnetic Force Stronger, According to Latest Recommended Values
- New Graphene Discovery Boosts Oil Exploration Efforts, Could Enable Self-Powered Microsensors
- Environmental Pollutants Lurk Long After They ‘Disappear’
- New ‘Electronic Tongue’ System Assesses the Antioxidant Power of Juices and Fruit
- more stories
Computers & Math
An Advance Toward Ultra-Portable Electronic Devices
- Fast Prediction of Axon Behavior: Computer Modeling Method May Lead to More Accurate and Capable Electrodes to Stimulate Nerves
- Disputes Over Content of Wikipedia Articles Reflect a Country’s Geopolitical Instability, Study Finds
- Seeing the S-Curve in Everything
- Rock-Paper-Scissors Players Are Natural Copycats
- more stories
Strange Science News
- Engineering Excitable Cells for Studies of Bioelectricity and Cell Therapy
- Rapid Venom Evolution in Pit Vipers May Be Defensive; Marsupials That Prey on Venomous Snakes Also Evolve Rapidly
- Be Still My Eyebrows: Liars Under Scrutiny Can’t Completely Suppress Facial Expressions, Researchers Say
- Memories May Skew Visual Perception
- Bacteria Use Batman-Like Grappling Hooks to ‘Slingshot’ on Surfaces, Study Shows
- Non-Africans Are Part Neanderthal, Genetic Research Shows
- Parasitism: Wasp Uses Ladybug as ‘Zombie Bodyguard’
- Lab-Grown Meat Would Cut Greenhouse Gas Emissions and Save Energy, Research Suggests
- Fossil Forensics Reveals How Wasps Populated Rotting Dinosaur Eggs
- Swarms of Locusts Use Social Networking to Communicate
- High Social Rank Comes at a Price, Wild Baboon Study Finds
- Brainy Lizards Pass Test for Birds
- more strange science news
Science Video News
Engineering Students Rock
- Radiologists Develop Asthma Imaging Method
- Research Meteorologists See More Severe Storms Ahead: The Culprit — Global Warming
- Sociologists Weigh In On Obesity Increasing The Length Of Hospital Stays
- more science videos
Breaking News
- Atlantis has landed, ending NASA’s shuttle era
- NASA’s “Final Four” astronauts close out shuttle era
- Hubble detects a tiny fourth moon around Pluto
- U.S. space shuttle spawned heart pump, fly by wire
- U.S. wants to talk outer space with China
- more science news
In Other News …
- Europe eyes sweeping new powers for rescue fund
- As default looms, pressure grows to end impasse
- S&P says 50-50 chance of U.S. downgrade
- Morgan Stanley stuns market with results
- Express Scripts to buy Medco for $29 billion
- Jobless claims rise above expectations
- Cash records, email suggest Coulson knew of bribes: source
- Atlantis has landed, ending NASA’s shuttle era
- more top news

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