- ScienceDaily
- 22/11/9 22:17
Researchers have published a new theory for making batches of carbon nanotubes with a single, desired chirality. Their method could simplify purification of nanotubes that are all metallic or all semiconductors.
Researchers have published a new theory for making batches of carbon nanotubes with a single, desired chirality. Their method could simplify purification of nanotubes that are all metallic or all semiconductors.
In a study of pregnant women in the United States, investigators found that a specific imbalance of two placental proteins could predict which women were at risk of developing a severe form of preeclampsia, a life-threatening blood pressure disorder.
The force driving a strange outbreak of tuberculosis that exited the lungs and began chewing away at bones 15 years ago in North Carolina has been solved at the molecular level by a collaborative team of scientists. The mysterious bug reverted to an ancestral form that made its macrophage hosts much more mobile and active.
Eligible older adults who participate in the Supplemental Nutrition Assistance Program (SNAP) in the United States may have slower memory decline than eligible people who do not participate, according to a new study. Researchers found that those who used SNAP had about two fewer years of cognitive aging over a 10-year period compared with those who didn't use SNAP.
Total energy consumption decreased 7.5 percent nationwide in 2020 compared with 2019 as the COVID-19 pandemic led to lockdowns, business closures and employees working from home, according to a new study. The research is the first to quantify the effects of pandemic disruptions on energy consumption trends across all 50 states and the District of Columbia.
The mechanism by which fat-related molecules called lipids regulate pacemaker ion channel proteins, which help control the heart rhythm, has been revealed in a new study.
There's no need to panic about a pending robot takeover just yet. Only 14% of workers say they've seen their job replaced by a robot. But those who have experienced job displacement due to a robot overstate the effect of robots taking jobs from humans by about three times.
Racial and ethnic disparities in pain prevalence in the U.S. are far larger than previously realized, according to the results of a new study.
Researchers report the discovery of the population of residual tumor cells responsible for the recurrence of colorectal cancer in other organs after removal of the primary tumor. The study shows that early immunotherapy, before surgery, can eliminate these cells before they have started to develop a metastasis, and thus prevent relapse of the disease. The work paves the way for the development of...
With wings spanning nearly 16 feet, a new species of pterosaurs has been identified from the Atlantic coast of Angola.
The death of a loved one, financial or food insecurity, or a newly developed disability were some of the strongest predictors of whether a patient hospitalized for COVID-19 would experience symptoms of long COVID a year later.
In an experimental study, participants' first impressions of photos of strangers' faces were strongly influenced by disclosure of the stranger's political partisanship.
Octopuses appear to deliberately throw debris, sometimes directed at other octopuses, according to a new study.
A linguistic analysis of Nazi propaganda suggests that dehumanization of Jews shifted over time, with propaganda after the onset of the Holocaust portraying Jews as having a greater capacity for agency, relative to earlier propaganda focused on disengaging moral concern.
Using an innovative technology that enables imaging of two individuals during live and natural conditions, researchers have identified specific brain areas in the dorsal parietal region of the brain associated with the social symptomatology of autism.
Early diagnosis of chronic kidney disease (CKD) is key to managing progression of the disease. A new technique analyzing urine extracellular vesicles (uEVs) -- cell-derived nanoscale spherical structures involved in multiple biological functions -- in urine samples identifies changes in the kidneys earlier than conventional methods and can also predict renal function decline.
Exposure to indoor household pollution has been linked to poor pregnancy outcomes for women in low- and middle-income countries in a new study.
An early pandemic survey found that respondents' intentions to receive COVID-19 vaccines were linked more to their media literacy and opinion of health experts than knowledge of the virus or previous vaccination behavior. In the study, researchers also found that for respondents who had recently refused a flu vaccine, higher COVID-19 knowledge actually correlated with lower future vaccine...
Finding a turkey this holiday season could be difficult because of avian flu outbreaks on farms. Migratory wild birds could be to blame for transmitting the virus to commercial flocks, but no one has looked closely at this wandering population until now. Researchers now report that cooler temperatures and certain species gathering in the same winter habitat could increase the circulation of H7 and...
A new approach to stem cell therapy that uses antibodies instead of traditional immunosuppressant drugs robustly preserves cells in mouse brains and has potential to fast-track trials in humans, a new study suggests. Suppression with monoclonal antibodies enabled long-term survival of human stem cell transplants in mouse brains for at least six to eight months, while the cell grafts did not...
Research suggests that one reason happiness can seem so elusive is that our current feelings can interfere with memories of our past well-being. An analysis of data from four longitudinal surveys to investigate how our current feelings influence our memories of past happiness.
An innovative technology has been developed to enable bone regeneration to correct large bone defects by means of a special hydrogel. Following successful tests in an animal model, the researchers now plan to move forward to clinical trials.
Technology that can change skin tissue into blood vessels and nerve cells also shows promise as a treatment for traumatic muscle loss.
A guided mindfulness-based stress reduction program was as effective as use of the gold-standard drug -- the common antidepressant drug escitalopram -- for patients with anxiety disorders, new research finds.
Cancer cells acquire genetic anomalies that allow them to grow and proliferate unchecked. Researchers have now found another difference between cancer cells and normal cells: the X chromosome, typically only inactivated in XX female cells, can be inactivated across different male-derived cancers.