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Study could lead to production of more efficient optoelectronic devices

Diodes are widely used electronic devices that act as one-way switches for current. A well-known example is the LED (light-emitting diode), but there is a special class of diodes designed to make use of the phenomenon known as "quantum tunneling". Ca.....»»

Category: topSource:  physorgApr 20th, 2021

Sharks Use Earth"s Magnetic Field To Navigate the Seas

A new study suggests some sharks can read Earth's field like a map and use it to navigate the open seas. ScienceMag: The result adds sharks to the long list of animals -- including birds, sea turtles, and lobsters -- that navigate with a mysterious m.....»»

Category: topSource:  slashdotRelated News4 hr. 30 min. ago

Alzheimer"s study: A Mediterranean diet might protect against memory loss and dementia

Alzheimer's disease is caused by protein deposits in the brain and the rapid loss of brain matter. But a Mediterranean diet rich in fish, vegetables and olive oil might protect the brain from these disease triggers......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Better way to determine safe drug doses for children

To make drugs and their development safer for children, researchers have developed a method that could help determine safe drug doses more quickly. In their study, the team created a model of how organs develop that is more data-driven and consequent.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Many consumers misinterpret food date labels, yet use them with confidence

Misunderstanding food date labeling is common and educational communications are needed to improve consumer understanding, according to a new study......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Study confirms racial differences in response to prostate cancer treatment

A study designed to enroll an equal number of Black and white men with advanced prostate cancer confirms key findings that have been evident in retrospective analyses and suggest potential new avenues for treating Black patients who disproportionatel.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Some meat eaters disgusted by meat

Some meat eaters feel disgusted by meat, according to a new study......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Blocking viruses" exit strategy

Tests of a new antiviral that aims to prevent the deadly Marburg virus from spreading in the body show promise, according to a new study......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

The origin of reproductive organs

Early in fetal development, a mass of cells known as the bipotential gonad has the possibility of giving rise either to ovaries or testes, reproductive organs that contribute to many of the characteristics that define a person's sex. In a new study,.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Children likely to be pleading guilty when innocent

Young people need additional support and protection in the criminal justice system because they are more susceptible to pleading guilty when innocent, a new study argues......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Researchers speed identification of DNA regions that regulate gene expression

Scientists have developed a highly efficient method to address a major challenge in biology -- identifying the genetic 'switches' that regulate gene expression......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

COVID-19 vaccine delivery by age may mitigate deaths and severe health impacts

Strategic vaccine delivery is critical to reducing COVID-19 transmission, mortality and long-term health impacts. A new study suggests that prioritizing vaccine delivery to older age groups and the medically vulnerable has the greatest impact in mini.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

New evidence links gut bacteria and neurodegenerative conditions

A new study establishes a link between specific bacteria species and physical manifestations of neurodegenerative diseases......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Organ transplant recipients remain vulnerable to COVID-19 even after second vaccine dose

In a new study, researchers show that although two doses of a vaccine against SARS-CoV-2 -- the virus that causes COVID 19 -- confers some protection for people who have received solid organ transplants, it's still not enough to enable them to dispen.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Sugar-sweetened drinks linked to increased risk of colorectal cancer in women under 50, study finds

Colorectal cancer diagnoses have increased among people under age 50 in recent years and researchers are seeking reasons why. A new study has found a link between drinking sugar-sweetened beverages and an increased risk of developing colorectal cance.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

COVID-19 vaccine is associated with fewer asymptomatic SARS-CoV-2 infections, study finds

St. Jude Children's Research Hospital COVID-19 screening and vaccination program for employees offers early evidence that vaccine protects against asymptomatic infection, which has fueled the pandemic......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

One bone fracture increases risk for subsequent breaks in postmenopausal women

Current guidelines for managing osteoporosis specifically call out hip or spine fractures for increasing the risk for subsequent bone breaks. But a new study suggests that fractures in the arm, wrist, leg and other parts of the body should also set o.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Too much, too little sleep linked to elevated heart risks in people free from disease

People who clock six to seven hours of sleep a night had the lowest chance of dying from a heart attack or stroke when compared with those who got less or more sleep, according to a new study. This trend remained true even after the research team acc.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Restricting growth, spread of head and neck cancers

Researchers have discovered a key molecule that allows cancer stem cells to bypass the body's natural immune defenses, spurring the growth and spread of head and neck squamous cell cancers. Their study, conducted in mice, also demonstrates that inhib.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

One third of patients hospitalized with COVID-19 have lung changes after a year

A new study has shown that most patients discharged from hospital after experiencing severe COVID-19 infection appear to return to full health, although up to a third do still have evidence of effects upon the lungs one year on......»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago

Microneedles are promising devices for painless drug delivery with minimal side effects

A recent study monitors progress in the development of microneedles for immunotherapy and discusses the challenges regarding their production. Researchers suggest using microneedles for immunotherapy due to the abundance of immune cells under the ski.....»»

Category: biomedSource:  sciencedailyRelated News7 hr. 29 min. ago