In a crystalline solid, the atoms form an ordered lattice. Crystalline solids respond elastically to small deformations: When the applied strain is removed, the macroscopic stress, as well as the microscopic configuration of the atomic lattice, goes back to the original state. On the other hand, a material behaves plastically if it does not return to its original state. In general, plasticity only occurs when the deformation is sufficiently large.
Schizophrenia is among the most difficult mental illnesses to treat, in part because it is characterized by a wide range of dysfunction, from hallucinations and mood disorders to cognitive impairment, especially verbal and working memory, which can be explained in part by abnormalities in early auditory information processing.
Students given extra points if they met "The 8-hour Challenge" -- averaging eight hours of sleep for five nights during final exams week -- did better than those who snubbed (or flubbed) the incentive, according to Baylor University research.
A team of scientists from Arizona State University's School of Molecular Sciences and Germany have published in Science Advances online today an explanation of how a particular phase-change memory (PCM) material can work one thousand times faster than current flash computer memory, while being significantly more durable with respect to the number of daily read-writes.
The scene: a bitter divorce, and a custody battle over the couple's 7-year-old son. Awarded full custody, the mother - perhaps seeking revenge? - sets out to destroy the son's relationship with his father. The mother tells the son lies about the father's behavior, plants seeds of doubt about his fitness as a parent, and sabotages the father's efforts to see his son. The son begins to believe the lies; as he grows up, his relationship with his father becomes strained.
The more often adolescents say they have seen adverts for e-cigarettes, the more often they use both e-cigarettes and smoke tobacco cigarettes, according to a study published in ERJ Open Research .
The study took place in Germany, where regulations around tobacco and e-cigarettes advertising are more permissive than in other parts of Europe. Elsewhere there are firm bans on advertising tobacco but certain types of adverts and promotions for e-cigarettes are permitted.
ANN ARBOR--An extremely messy personal space seems to lead people to believe the owner of that space is more neurotic and less agreeable, say University of Michigan researchers.
Psychologists from U-M's Flint and Ann Arbor campuses explored the degree of messiness in one's workspace and how it affects perceptions of the owner's personality.
In three experiments, about 160 participants were randomly assigned to sit in a researcher's office that was clean and uncluttered, or in another office that was either "somewhat" or "very" messy.
Stressful events in the evening release less of the body's stress hormones than those that happen in the morning, suggesting possible vulnerability to stress in the evening.
The body's central system reacts less strongly to acute psychological stress in the evening than it does in the morning, according to research conducted at Japan's Hokkaido University.
Cognitive behavioural therapy (CBT) delivered by respiratory nurses is cost-effective and reduces anxiety symptoms in chronic obstructive pulmonary disease (COPD) patients, according to research published in ERJ Open Research .
A woman lies in her hospital bed. Her heart rate is elevated, she has a slight fever and an elevated white blood cell count.
Could this be the beginnings of sepsis, a life-threatening reaction to an infection? Or could these simply be signs of a normal pregnancy?
Maternal sepsis, which occurs during pregnancy or postpartum, is a rare but possibly preventable complication that accounts for 12.7 percent of pregnancy-related deaths in the United States each year.