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Saturday, May 17, 2014
It Isn't What You Think It Is!
ScienceDaily: Most Popular News
ScienceDaily: Most Popular News |
- Oldest most complete, genetically intact human skeleton in New World
- Jupiter's Great Red Spot is smaller than ever seen before
- Is ADHD An Advantage For Nomadic Tribesmen?
| Oldest most complete, genetically intact human skeleton in New World Posted: 15 May 2014 11:27 AM PDT In a paper released today in the journal Science, an international team of researchers and cave divers present the results of an expedition that discovered a near-complete early American human skeleton with an intact cranium and preserved DNA. The remains were found surrounded by a variety of extinct animals more than 40 meters (130 feet) below sea level in Hoyo Negro, a deep pit within the Sac Actun cave system on Mexico's Yucatán Peninsula. |
| Jupiter's Great Red Spot is smaller than ever seen before Posted: 15 May 2014 07:36 AM PDT Recent Hubble observations confirm that Jupiter's Great Red Spot, a swirling storm feature larger than Earth, has shrunken to the smallest size astronomers have ever measured. Jupiter's Great Red Spot is a churning anticyclonic storm. |
| Is ADHD An Advantage For Nomadic Tribesmen? Posted: 09 Jun 2008 04:56 PM PDT A propensity for attention deficit hyperactivity disorder might be beneficial to a group of Kenyan nomads, according to new research in BMC Evolutionary Biology. Scientists have shown that an ADHD-associated version of the gene DRD4 is associated with better health in nomadic tribesmen, and yet may cause malnourishment in their settled cousins. |
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ScienceDaily: Top Technology News
ScienceDaily: Top Technology News |
- Lighting the way to graphene-based devices
- Ground breaking hip and stem cell surgery completed using 3D printed implant
- Fast and curious: Electrons hurtle into the interior of a new class of quantum materials
- Tricking the uncertainty principle
- Rotary sensors: Getting the right spin
- Cameras and displays: Organic photodiodes for sensor applications
- Hope for paraplegic patients: Implantable microelectrode stimulates spinal cord with electric impulses
- Marijuana use involved in more fatal accidents since commercialization of medical marijuana
- Favored by God in warfare? How WWI sowed seeds for future international conflicts
- Mathematics to improve running
- Inhibiting protein family helps mice survive radiation exposure, study finds
- Women's empowerment and Olympic success
- Unassuming rampant polluters on two wheels: Small mopeds cause more air pollution than cars
| Lighting the way to graphene-based devices Posted: 16 May 2014 05:33 PM PDT A technique whereby semiconductors made from graphene and boron nitride can be charge-doped to alter their electronic properties using only visible light has been demonstrated by researchers. Graphene continues to reign as the next potential superstar material for the electronics industry, a slimmer, stronger and much faster electron conductor than silicon. |
| Ground breaking hip and stem cell surgery completed using 3D printed implant Posted: 16 May 2014 05:33 PM PDT Doctors and scientists have completed their first hip surgery with a 3D printed implant and bone stem cell graft. The 3D printed hip, made from titanium, was designed using the patient's CT scan and CAD CAM (computer aided design and computer aided manufacturing) technology, meaning it was designed to the patient's exact specifications and measurements. The implant will provide a new socket for the ball of the femur bone to enter. Behind the implant and between the pelvis, doctors have inserted a graft containing bone stem cells. |
| Fast and curious: Electrons hurtle into the interior of a new class of quantum materials Posted: 16 May 2014 08:09 AM PDT Scientists have made a step forward in developing a new class of materials that could be used in future technologies. They have discovered a new quantum effect that enables electrons -- the negative-charge-carrying particles that make today's electronic devices possible -- to dash through the interior of these materials with very little resistance. |
| Tricking the uncertainty principle Posted: 16 May 2014 06:23 AM PDT Today, we can measure the position of an object with unprecedented accuracy, but the uncertainty principle places fundamental limits on our ability to measure. Noise that results from of the quantum nature of the fields used to make measurements imposes what is called the 'standard quantum limit.' This background noise keeps us from knowing an object's exact location, but a recent study provides a solution for rerouting some of that noise away from the measurement. |
| Rotary sensors: Getting the right spin Posted: 16 May 2014 06:20 AM PDT Rotary sensors can help determine the position of a moveable body in relation to an axis. They are essential to the smooth running of car engines in the automotive industry, for example. Researchers have developed a new kind of sensor that combines precision measurement with flexible handling, allowing it to be customized to specific measurement tasks. |
| Cameras and displays: Organic photodiodes for sensor applications Posted: 16 May 2014 06:20 AM PDT Powerful, inexpensive and even flexible when they need to be, organic photodiodes are a promising alternative to silicon-based photodetectors. They are used to improve light sensitivity in cameras and to check displays for homogeneous color composition. Scientists are now developing just this kind of component to fit customer-specific requirements. |
| Posted: 16 May 2014 06:20 AM PDT People with severe injuries to their spinal cord currently have little or no prospect of recovery and remain confined to their wheelchairs. Now, all that could change with a new treatment that stimulates the spinal cord using electric impulses. The hope is that the technique will help paraplegic patients learn to walk again. |
| Marijuana use involved in more fatal accidents since commercialization of medical marijuana Posted: 15 May 2014 02:35 PM PDT The proportion of marijuana-positive drivers involved in fatal motor vehicle crashes in Colorado has increased dramatically since the commercialization of medical marijuana in the middle of 2009, according to a study. The study raises important concerns about the increase in the proportion of drivers in a fatal motor vehicle crash who were marijuana-positive since the commercialization of medical marijuana in Colorado, particularly in comparison to the 34 non-medical marijuana states. |
| Favored by God in warfare? How WWI sowed seeds for future international conflicts Posted: 15 May 2014 12:38 PM PDT World War I — the "war to end all wars" — in fact sowed seeds for future international conflicts in a way that has been largely overlooked: through religion, says a historian and author. Widespread belief in the supernatural was a driving force during the war and helped mold all three of the major religions -- Christianity, Judaism and Islam -- paving the way for modern views of religion and violence, he said. |
| Mathematics to improve running Posted: 15 May 2014 06:08 AM PDT How can runners improve their performance, weight and fitness? Researchers have produced a mathematical model to optimize running, which could lead to personal e-coaching customized to each individual's physiological state. It also confirms a well-known fact in the sports community: runners who vary their speed spend their energy better and thus run longer. Mathematics gives them the opportunity to switch from simple statistical tools to personalized sporting advice. |
| Inhibiting protein family helps mice survive radiation exposure, study finds Posted: 14 May 2014 11:24 AM PDT Tinkering with a molecular pathway that governs how intestinal cells respond to stress can help mice survive a normally fatal dose of abdominal radiation, according to a new study. Because the technique is still partially effective up to 24 hours after exposure, the study suggests a possible treatment for people unintentionally exposed to large amounts of radiation, such as first responders at the Chernobyl nuclear disaster in 1986. |
| Women's empowerment and Olympic success Posted: 13 May 2014 10:26 AM PDT Nations with greater women's empowerment win more medals and send more athletes to the Summer Olympics, research shows. The study provides evidence for the popular but previously untested hypothesis that women's empowerment leads to international athletic success. The authors examined the success of more than 130 nations participating in the Summer Olympics from 1996 through 2012. Similar to previous studies, they found that more populous and wealthier nations were more successful. |
| Unassuming rampant polluters on two wheels: Small mopeds cause more air pollution than cars Posted: 13 May 2014 08:33 AM PDT Not cars or trucks, but mopeds with their two-stroke engines are the main source of fine particles and other air contaminants in many towns in Asia, Africa and southern Europe. The reasons for the high emissions are the combustion properties in two-stroke engines and the overly lenient emission requirements for small two-wheelers. |
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| Google Inc., 20 West Kinzie, Chicago IL USA 60610 | |
ScienceDaily: Top Health News
ScienceDaily: Top Health News |
- Methadone programs can be key in educating, treating Hepatitis C patients
- Herpes-loaded stem cells used to kill brain tumors
- Ground breaking hip and stem cell surgery completed using 3D printed implant
- Wide variation in lung cancer rates globally, study finds
- Molecules involved in rheumatoid arthritis angiogenesis identified
- War and Peace (of Mind): Mindfulness training for military could help them deal with stress
- Mothers' sleep, late in pregnancy, affects offspring's weight gain as adults
- Domesticated animals provide vital link to emergence of new diseases
- Living conditions in Iraq must improve if investment in health system is to yield results
- One in 10 16-year-olds have considered self-harm, study shows
- Male infertility linked to mortality, study shows
- Interrupted breathing during sleep affects brain neurons necessary to regulate heart rate
- Traditional cheeses: gustatory richness, health quality assured by their microbiota
- No such thing as a 'universal' intelligence test: Cultural differences determine results country by country
- New treatment targeting versatile protein may protect brain cells in Parkinson's disease
- Hope for paraplegic patients: Implantable microelectrode stimulates spinal cord with electric impulses
- How key cancer-fighting protein is held in check
- Magnets and kids: A dangerous duo
- Water pipe smoking causes significant exposure to nicotine, cancer-causing agents
- Diabetics: Two large meals better than 6 small meals with same calories for controlling weight, blood sugar
- Marijuana use involved in more fatal accidents since commercialization of medical marijuana
- Complex interactions may matter most for longevity
- 'Physician partners' free doctors to focus on patients, not paperwork
- Tumor cells in blood may indicate poor prognosis in early breast cancer
- Hitting a moving target: AIDS vaccine could work against changeable site on HIV
- Favored by God in warfare? How WWI sowed seeds for future international conflicts
- Protein sharpens salmonella needle for attack
- Watching stressful movies triggers changes to your heartbeat
- Most NHL players peak by age 29: Study
- Sense of obligation leads to trusting strangers
- Visual clue to new Parkinson's Disease therapies
| Methadone programs can be key in educating, treating Hepatitis C patients Posted: 16 May 2014 05:33 PM PDT People who inject drugs and are enrolled in a drug treatment program are receptive to education about, and treatment for, hepatitis C virus, according to a study. That finding will be welcome news to health care providers. The paper notes that injection drug use is a primary mode of infection, making for an HCV infection prevalence as high as 80 percent among people who inject drugs. |
| Herpes-loaded stem cells used to kill brain tumors Posted: 16 May 2014 05:33 PM PDT A potential solution for how to more effectively kill tumor cells using cancer-killing viruses has been discovered by researchers. The investigators report that trapping virus-loaded stem cells in a gel and applying them to tumors significantly improved survival in mice with glioblastoma multiform, the most common brain tumor in human adults and also the most difficult to treat. |
| Ground breaking hip and stem cell surgery completed using 3D printed implant Posted: 16 May 2014 05:33 PM PDT Doctors and scientists have completed their first hip surgery with a 3D printed implant and bone stem cell graft. The 3D printed hip, made from titanium, was designed using the patient's CT scan and CAD CAM (computer aided design and computer aided manufacturing) technology, meaning it was designed to the patient's exact specifications and measurements. The implant will provide a new socket for the ball of the femur bone to enter. Behind the implant and between the pelvis, doctors have inserted a graft containing bone stem cells. |
| Wide variation in lung cancer rates globally, study finds Posted: 16 May 2014 08:10 AM PDT Lung cancer rates are dropping in young women in many regions of the globe, the only recent comprehensive analysis of lung cancer rates for women around the world finds. The study points to the success of tobacco control efforts around the world. Lung cancer is now the second leading cause of cancer death in women worldwide. An estimated 491,200 women died of lung cancer in 2012, more than half (57%) of whom resided in economically developing countries. |
| Molecules involved in rheumatoid arthritis angiogenesis identified Posted: 16 May 2014 08:10 AM PDT Two protein molecules that fit together as lock and key seem to promote the abnormal formation of blood vessels in joints affected by rheumatoid arthritis, according to researchers who found that the substances are present at higher levels in the joints of patients affected by the disease. Rheumatoid arthritis is a chronic autoimmune inflammatory disease in which the body's own defenses attack the tissues lining the joints, causing painful swelling and bone erosion that can ultimately lead to joint deformities. |
| War and Peace (of Mind): Mindfulness training for military could help them deal with stress Posted: 16 May 2014 06:25 AM PDT Mindfulness training -- a combination of meditation and body awareness exercises -- can help U.S. Marine Corps personnel prepare for and recover from stressful combat situations. The study suggests that incorporating meditative practices into pre-deployment training might be a way to help the U.S. military reduce rising rates of stress-related health conditions, including PTSD, depression and anxiety, within its ranks. |
| Mothers' sleep, late in pregnancy, affects offspring's weight gain as adults Posted: 16 May 2014 06:23 AM PDT Poor-quality sleep during the third trimester of pregnancy can increase the odds of weight gain and metabolic abnormalities in offspring once they reach adulthood. The effects, caused by epigenetic modifications, impose lasting consequences on the next generation. The researchers linked the excess weight and changes in metabolism to epigenetic modifications that reduce expression of the gene for adiponectin -- a hormone that helps regulate several metabolic processes, including glucose regulation. Lower levels of adiponectin correlate with increased body fat and reduced activity. |
| Domesticated animals provide vital link to emergence of new diseases Posted: 16 May 2014 06:23 AM PDT Pets and other domesticated animals could provide new clues into the emergence of infections that can spread between animals and humans. The study showed that the number of parasites and pathogens shared by humans and animals is related to how long animals have been domesticated. The findings suggest that although wild animals may be important for the transmission of new diseases to humans, humanity's oldest companions -- livestock and pets such as cattle and dogs -- provide the vital link in the emergence of new diseases. |
| Living conditions in Iraq must improve if investment in health system is to yield results Posted: 16 May 2014 06:22 AM PDT Despite enormous investment in Iraq's health system in the 10 years since the US-led invasion, the health condition of Iraqis has deteriorated and will fail to improve unless more is done to improve living conditions. The authors found that housing conditions in Iraq are in a dire state for the majority of the population, with half a million people living in squatter settlements. While the government is building 25,000 housing units a year, the current need is for three million. The infrastructure for water and sanitation is too old and is a source of illness for many people, even in oil-rich Basra where the water supply is not suitable for human consumption. |
| One in 10 16-year-olds have considered self-harm, study shows Posted: 16 May 2014 06:22 AM PDT One in ten 16-year-olds surveyed in a new study has considered self-harm or taking an overdose. "Although mental health campaigns have for some time attempted to de-stigmatise mental ill-health, by far the most likely reason why young people self-harm remains self-punishment. This suggests that young people with mental health problems keep blaming themselves for these, rather than appreciating external stressors such as pressures arising from school work or financial difficulties," researchers said. |
| Male infertility linked to mortality, study shows Posted: 16 May 2014 06:22 AM PDT Men who are infertile because of defects in their semen appear to be at increased risk of dying sooner than men with normal semen, according to a study. Men with two or more abnormalities in their semen were more than twice as likely to die over a roughly eight-year period as men who had normal semen, the study found. |
| Interrupted breathing during sleep affects brain neurons necessary to regulate heart rate Posted: 16 May 2014 06:21 AM PDT Sufferers of a common sleep-breathing disorder have diminished activity among neurons responsible for keeping heart rate low, reveals a new study. The research discovered that in obstructive sleep apnoea (OSA), neurons in the brainstem that control heart rate experience a blunting of their activity. The reduction of neuronal activity likely contributes to the increased heart rate, blood pressure and risk of adverse cardiovascular events that occur in patients with OSA. |
| Traditional cheeses: gustatory richness, health quality assured by their microbiota Posted: 16 May 2014 06:21 AM PDT The benefits of traditional, raw-milk cheeses have been reviewed by researchers who have shown that traditional cheeses have unrivalled advantages in terms of both their diversity and their gustatory richness, but also regarding their protection against pathogenic agents. These benefits are linked to the specific microbiota found in these cheeses; they result from the use of raw milk, combined with the specific techniques used to manufacture traditional cheeses. |
| Posted: 16 May 2014 06:20 AM PDT Scientists have studied 54 individuals -- half Spanish and half Moroccan -- to determine how IQ tests work. New research suggests that a universal test of intelligence quotient does not exist. Results in this type of test are determined to a strong degree by cultural differences. |
| New treatment targeting versatile protein may protect brain cells in Parkinson's disease Posted: 16 May 2014 06:20 AM PDT In Parkinson's disease (PD), dopamine-producing nerve cells that control our movements waste away. Current treatments for PD therefore aim at restoring dopamine contents in the brain. In a new study, researchers are attacking the problem from a different angle, through early activation of a protein that improves the brain's capacity to cope with a host of harmful processes. |
| Posted: 16 May 2014 06:20 AM PDT People with severe injuries to their spinal cord currently have little or no prospect of recovery and remain confined to their wheelchairs. Now, all that could change with a new treatment that stimulates the spinal cord using electric impulses. The hope is that the technique will help paraplegic patients learn to walk again. |
| How key cancer-fighting protein is held in check Posted: 16 May 2014 06:20 AM PDT Analysis reveals how the protein p53, which triggers cancer cells to commit suicide, attaches to its regulatory molecule. These findings could lead to drugs to unleash p53 to battle a range of cancers. In guarding the cell against genetic damage, the p53 machinery functions both in the nucleus of the cell and in the cell's gel-like cytosol. When this machinery detects irreparable damage to the cell, p53 is unleashed to trigger apoptosis. In about half of all cancers, this machinery is rendered inoperable by mutation of p53, enabling cancer cells to proliferate despite their genetic malfunctions. |
| Magnets and kids: A dangerous duo Posted: 16 May 2014 06:20 AM PDT Magnet ingestions by children have received increasing attention over the past 10 years. With the growing availability of new and stronger neodymium-iron-boron magnets being sold as "toys," there has been an increase of cases of ingestion, resulting in serious injury and, in some cases, death. In a new study, researchers studied the trends of magnetic ingestions at a large children's hospital. |
| Water pipe smoking causes significant exposure to nicotine, cancer-causing agents Posted: 16 May 2014 06:19 AM PDT Young adults who smoked water pipes in hookah bars had elevated levels of nicotine, cotinine, tobacco-related cancer-causing agents, and volatile organic compounds (VOC) in their urine, and this may increase their risk for cancer and other chronic diseases, according to a study. After a single evening of water pipe smoking in a hookah bar, young men and women had in their urine a 73-fold increase in nicotine; fourfold increase in cotinine; twofold increase in NNAL, a breakdown product of a tobacco-specific nitrosamine, NNK, which can cause lung and pancreatic cancers; and 14 to 91 percent increase in the breakdown products of VOC such as benzene and acrolein that are known to cause cancer and cardiovascular and respiratory diseases. |
| Posted: 15 May 2014 03:44 PM PDT Two large meals (breakfast and lunch), rather than six small meals with the same total calories, are better for controlling weight and blood sugar in people with type 2 diabetes, research shows. "Novel therapeutic strategies should incorporate not only the energy and macronutrient content but also the frequency and timing of food. Further larger scale, long-term studies are essential before offering recommendations in terms of meal frequency," the researchers conclude. |
| Marijuana use involved in more fatal accidents since commercialization of medical marijuana Posted: 15 May 2014 02:35 PM PDT The proportion of marijuana-positive drivers involved in fatal motor vehicle crashes in Colorado has increased dramatically since the commercialization of medical marijuana in the middle of 2009, according to a study. The study raises important concerns about the increase in the proportion of drivers in a fatal motor vehicle crash who were marijuana-positive since the commercialization of medical marijuana in Colorado, particularly in comparison to the 34 non-medical marijuana states. |
| Complex interactions may matter most for longevity Posted: 15 May 2014 02:35 PM PDT Complex interactions among diet, mitochondrial DNA and nuclear DNA appear to influence lifespan at least as much as single factors alone, a new study of the biology of aging shows. The findings may help scientists better understand the underlying mechanisms of aging and explain why studies of single factors sometimes produce contradictory results. |
| 'Physician partners' free doctors to focus on patients, not paperwork Posted: 15 May 2014 02:33 PM PDT Primary care doctors spend so much time on clerical duties that their time with patients is limited. A new study suggests that "physician partners" who would work on those time consuming administrative tasks can free up physicians' time so that they can focus more on their patients. "Patients want their doctors to spend time with them and give them the attention that makes them feel more confident in their medical care — they don't want to just sit there while their doctor is on the computer," said the study's primary investigator |
| Tumor cells in blood may indicate poor prognosis in early breast cancer Posted: 15 May 2014 01:38 PM PDT Tumor cells in bone marrow of early breast cancer patients predict a higher risk of relapse as well as poorer survival, but bone marrow biopsy is an invasive and painful procedure. Now, it may be possible to identify tumor cells in a routine blood sample and use them as prognostic markers, according to a study. The authors conclude that "Our data offer support for the clinical potential of CTCs to assess the individual risk of patients at the time of primary diagnosis and may be used for treatment tailoring in the absence of other strong quantitative markers." |
| Hitting a moving target: AIDS vaccine could work against changeable site on HIV Posted: 15 May 2014 12:39 PM PDT A vaccine or other therapy directed at a single site on a surface protein of HIV could in principle neutralize nearly all strains of the virus—thanks to the diversity of targets the site presents to the human immune system. HIV infection is nearly always fatal, if untreated, because the virus is extremely effective at evading the human immune response. Its main strategy is to cover its most exposed parts, the flower-like envelope protein (Env) structures that grab and penetrate host cells, with rapidly mutating decoy proteins and antibody-resistant sugar molecules called glycans. |
| Favored by God in warfare? How WWI sowed seeds for future international conflicts Posted: 15 May 2014 12:38 PM PDT World War I — the "war to end all wars" — in fact sowed seeds for future international conflicts in a way that has been largely overlooked: through religion, says a historian and author. Widespread belief in the supernatural was a driving force during the war and helped mold all three of the major religions -- Christianity, Judaism and Islam -- paving the way for modern views of religion and violence, he said. |
| Protein sharpens salmonella needle for attack Posted: 15 May 2014 10:21 AM PDT A tiny nanoscale syringe is Salmonella's weapon. Using this, the pathogen injects its molecular agents into the host cells and manipulates them to its own advantage. A team of scientists demonstrates that a much investigated protein, which plays a role in Salmonella metabolism, is required to activate these needles and makes the replication and spread of Salmonella throughout the whole body possible. |
| Watching stressful movies triggers changes to your heartbeat Posted: 15 May 2014 07:38 AM PDT Watching films with stressful scenes can trigger changes to the heart's beating pattern, reports a new study. "This is the first time that the effects have been directly measured and although the results varied from person to person we consistently saw changes in the cardiac muscle. If someone already has a weakened heart, or if they experience a much more extreme stress, the effect could be much more destabilizing and dangerous," researchers stated. |
| Most NHL players peak by age 29: Study Posted: 15 May 2014 06:56 AM PDT A new study identifies when the clock runs out on an NHL player's peak performance, giving team executives insight into how best to build a roster. The study found that the performance of forwards peaks between the ages of 27 and 28. Defensemen are best between 28 and 29, and the performance of goaltenders varies little by age. |
| Sense of obligation leads to trusting strangers Posted: 15 May 2014 06:51 AM PDT Trusting a stranger may have more to do with feeling morally obligated to show respect for someone else's character than actually believing the person is trustworthy, according to new research. Theories that people are inclined to trust others because they feel it's the social norm or they expect to gain something don't fully explain the abundance of trust among strangers, researchers say. "Our findings reveal that people trust others because they feel it's their duty or moral responsibility," Dunning said. |
| Visual clue to new Parkinson's Disease therapies Posted: 15 May 2014 06:08 AM PDT A potential route to new therapies for the treatment of Parkinson's Disease (PD) has been developed by clinical scientists. They created a more sensitive test which detected neurological changes before degeneration of the nervous system became apparent. "This new research may prove to be groundbreaking in the understanding and treatment of Parkinson's disease. Science does not currently have answers for what happens in the brain before and during the disease, but these discoveries may bring us closer to this understanding," an expert commented. |
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