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147,247 articles from ScienceDaily

Parents' Perceptions Can Hamper Kids' Asthma Care, Study Finds

Researchers have new insight into why only half of all prescribed preventive asthma medications are actually taken daily as directed and so many kids needlessly suffer symptoms. Turns out, parents' beliefs about their children's medicines (fear of side effects or dependency, even doubt that the medicines are necessary) influence how consistently they administered the drugs.

Performance-based Pay For Teachers?

Teacher performance pay is a frequently discussed and controversial topic among kindergarten through 12th-grade educators. Recent findings by economics professors suggest that states and school districts in the United States begin developing programs that examine the effects of linking teacher pay to student achievement.

Pill Box Organizers Increase HIV Patients' Adherence And Improve Viral Suppression

Inexpensive pill box organizers are an easy, successful, and cost-effective tool to help patients take their medications as prescribed, according to a new study of low-income urban residents living with HIV infection. Incomplete adherence to HIV therapy is the most common cause of incomplete viral suppression, drug resistance, disease progression, and death among people living with HIV/AIDS.

'Lego-block' Galaxies Discovered In Early Universe

The NASA/ESA Hubble Space Telescope and the NASA Spitzer Space Telescope have joined forces to discover nine of the smallest, faintest, most compact galaxies ever observed in the distant universe. Blazing with the brilliance of millions of stars, each of the newly discovered galaxies is a 100 to 1,000 times smaller than our Milky Way Galaxy.

Dinosaur To Birds: Height Or Flight?

Paleontologists have long theorized that miniaturization was one of the last stages in the long series of changes required in order for dinosaurs to make the evolutionary "leap" to take flight and so become what we call birds. New evidence from a tiny Mongolian dinosaur, however, may leave some current theories about the evolution of flight up in the air.

Embryonic Stem Cells Used To Grow Cartilage

Bioengineers have developed a new method for growing cartilage from human embryonic stem cells -- a technique that offers a novel approach for growing replacement cartilage for the surgical repair of the knee, jaw, hip and other joints. Results indicate the method can generate cartilage that mimics different types of cartilage in the human body.

Heat Stress Influences Low Conception Of Dairy Herds

Summer heat stress is a main factor related to low conception rates in high producing dairy herds in warm areas worldwide. A research group studied the impact of several climate variables on conception rates in high producing dairy cows in northeastern Spain by examining 10,964 inseminations.

How Antibodies Fight HIV: New Evidence

Scientists have uncovered the first evidence that an HIV antibody is most effective when it binds not only to the virus, but also to host immune cells. The findings suggest that antibody efficiency depends on both directly neutralizing the virus and activating the host immune response.

Human-Animal Hybrid Embryos Approved For Research In Britain

The Human Fertilisation and Embryo Authority, the body which oversees human embryo research in Britain, has approved the creation of part-human, part-animal hybrid embryos for research purposes. The Authority decided that there is no fundamental reason to prevent cytoplasmic hybrid research, according to their statement.

Large Asteroid Breakup May Have Caused Mass Extinction On Earth 65 Million Years Ago

The impactor believed to have wiped out the dinosaurs and other life forms on Earth some 65 million years ago has been traced back to a breakup event in the main asteroid belt. A joint U.S.-Czech team from Southwest Research Institute (SwRI) and Charles University in Prague suggests that the parent object of asteroid (298) Baptistina disrupted when it was hit by another large asteroid, creating...

Mouse Model Of Autism Spectrum Disorders Developed

Researchers have genetically engineered mice that harbor the same genetic mutation found in some people with autism and Asperger syndrome. Mice with this mutation show a similar type of social impairment and cognitive enhancement as the type seen in some people with autism spectrum disorders (ASDs). ASDs are enigmatic cognitive disorders that impair a patient's social interactions, but do not...

New Drug Paradigm: Liquid Crystal Pharmaceuticals

An innovative liquid crystal technology that offers the promise of new drugs which may more effectively manage cancer and other diseases has been developed. The most recent research involving Liquid Crystal Pharmaceuticals has yielded a new investigational anti-tumor drug called Tolecine™, a compound that also has antiviral and antibacterial applications. It has been shown to be even more...

New Insight Into How Antibiotics Kill Might Make Them Deadlier

Scientists have what could be some very bad news for disease-causing bacteria. All three major classes of antibiotics that kill infectious bacteria do so in part by ramping up the production of harmful free radicals, researchers report. Because those different types of antibiotics each initially hit different targets, it had been believed they worked by independent means.

Pain Patients At Risk For Sleep Apnea

Sleep-disordered breathing was common when chronic pain patients took prescribed opioids. A direct dose-response relationship was found between central sleep apnea and methadone and benzodiazepines, an association which had not been previously reported.

Parenting Help For Bipolar Mums And Dads

Parents with bipolar disorder are taking part in a study that will give them the chance to follow a highly successful parenting skills program. Recent research suggests that children of parents with bipolar disorder are at increased risk of behavioural and emotional disturbance, which are risk factors both for their own development and for parental mental health.

Pregnancy May Increase The Risk Of Developing Binge Eating Disorder

Pregnancy may open a window of vulnerability for developing binge eating disorder, especially for women from lower socioeconomic situations, according to a new study. In a long-term study of 100,000 pregnant Norwegian women, the researchers saw an unexpected increase in new incidences of binge eating disorder that began during pregnancy. The research is the largest population-based study of eating...

Preventing Variceal Bleeding

Beta blockers should be the first line of prevention against variceal bleeding in patients with cirrhosis and portal hypertension. While banding is similarly effective in reducing the incidence of such bleeding, it can have fatal complications and is more expensive. Patients with liver disease often develop portal hypertension from a blockage in the blood flow through the liver.

Primates Expect Others To Act Rationally

Researchers have found that when understanding behavior, primates assume rationality and make inferences based on environmental restraints. The researchers studied over 120 primates from the three major groups of primates, and found the same responses among all three types.

Schizophrenia-linked Gene Keeps New Adult Brain Cells Under Control

A gene with reported links to schizophrenia and other mood disorders plays a broader role in the brain than scientists had previously suspected. The study reveals that the gene, known as Disrupted-In-Schizophrenia 1, directs the incorporation of new neurons into the adult brain and keeps the process under control. The gene's newly discovered roles might help to explain why schizophrenia's symptoms...