Updated: 1 hour 16 min ago
While several circulatory system models are used today in an attempt to better understand blood flow, they still don’t account for the complex rheological behavior of blood. Because blood is a complex suspension of red and white blood cells and platelets suspended within a plasma that contains various proteins, it can exhibit complex flow behavior. Many of the models currently used ignore these complexities and assume a Newtonian behavior or a constant thickness. Researchers will now present a new approach.
Nicotine the primary compound found within tobacco smoke is known to change the grouping of some subtypes of nicotinic receptors, but the mechanisms for nicotine addiction remain unclear.
While investigating the idealized benefits between sport and addiction, researchers found that the prevalence of substance abuse in some sports communities, in fact, creates a greater risk of addictions for people already vulnerable to them. Surprised by the number of participants, researchers interviewed a range of subjects including a gymnast, a rower, a martial artist and a significant number of athletes involved in team sports -- especially hockey.
Scientists have used high-intensity X-ray pulses to determine the structure of the crystalline protein envelope of an insect virus. The tiny viruses with their crystal casing are by far the smallest protein crystals ever analyzed using X-ray crystallography. This opens up new opportunities in the study of protein structures.
A new chronicles the embryonic origins of planaria, providing new insight into the animal's remarkable regenerative abilities.
New research shows why calorie restriction made mice live longer and healthier lives.
New research reveals a potential drug to combat the life-threatening effects of chronic obstructive pulmonary disease (COPD).
By using high-res images taken by the latest generation of compact satellites, scientists have developed a new capability for estimating crop yields from space.
A new study of songbird dehydration and survival risk during heat waves in the desert Southwest suggests that some birds are at risk of lethal dehydration and mass die-offs when water is scarce, and the risk is expected to increase as climate change advances. Using physiological data, hourly temperature maps and modeling, researchers investigated how rates of evaporative water loss varied in five bird species with varied body mass.
A team of scientists has discovered a new species of polychaete, a type of marine annelid worm, 9-meters deep underwater near Japan's Syowa Station in Antarctica, providing a good opportunity to study how animals adapt to extreme environments.
Researchers have discovered that a protein called Importin-11 protects the anti-cancer protein PTEN from destruction by transporting it into the cell nucleus. The research suggests that the loss of Importin-11 may destabilize PTEN, leading to the development of lung, prostate, and other cancers.
Cancer cells rely on the healthy cells that surround them for sustenance. Tumors reroute blood vessels to nourish themselves, secrete chemicals that scramble immune responses, and, according to recent studies, even recruit and manipulate neurons for their own gain. This pattern holds true not just for brain cancers, but also for prostate cancer, skin cancer, pancreatic cancer, and stomach cancer.
Scientists have genetically engineered a mouse that resists addiction to cocaine.
Crustaceans from the deepest ocean trenches found to contain ten times the level of industrial pollution than the average earthworm, scientists have shown.
Babies born with extremely low birth weight are not only at risk for physical problems but are also more likely to experience mental health problems later in life, according to an analysis of research conducted over nearly 30 years.
Two new studies take a look at different accountable care organization (ACO) payment models.
The discovery of a new mechanism that controls the way nerve cells in the brain communicate with each other to regulate our learning and long-term memory could have major benefits to understanding how the brain works and what goes wrong in neurodegenerative disorders such as epilepsy and dementia. The findings will have far-reaching implications in many aspects of neuroscience.
Scientists have discovered that tiny marine bacteria can synthesize one of Earth's most abundant sulfur molecules, which affects atmospheric chemistry and potentially climate. This molecule, dimethylsulfoniopropionate is an important nutrient for marine microorganisms and is the major precursor for the climate-cooling gas, dimethyl sulfide.
Stronger alcohol policies protect young people from dying in crashes caused by drunk driving according to researchers. The study supports the importance of comprehensive alcohol control policies to reduce the number of young people who die in alcohol-related crashes.
Skin with yellow and red pigments is perceived as more attractive in Caucasian males, but this skin coloring does not necessarily signal actual good health, new research concludes.