Tech
Mechanical systems, such as engines and motors, rely on two principal types of motions of stiff components: linear motion, which involves an object moving from one point to another in a straight line; and rotational motion, which involves an object rotating on an axis.
WEST LAFAYETTE, Ind. -- For men older than about 60, an enlarged prostate means feeling the urge to make a pit stop way too often throughout the day.
But a new study shows that if these men also happen to have prostate cancer, the larger prostate actually impedes tumor growth.
ROCHESTER, Minn. -- Kidney stones are a common and painful condition, with many sufferers experiencing recurrent episodes. Most people who pass an initial stone want to know their chances of future episodes, but this has not always been easy to predict. Now Mayo Clinic researchers are tracking the familiar characteristics of kidney stone formers in an online prediction tool that could help sufferers anticipate if they'll experience future episodes. The study was published in Mayo Clinic Proceedings.
People who inherit a faulty copy of the so-called "breast cancer genes" BRCA1 and BRCA2 are at high risk of cancer. About 10 percent of breast cancer cases and 15 percent of ovarian cancers can be traced back to a flaw in one of these genes.
A Rutgers study has uncovered a new threat in the opiate epidemic: Overdoses of loperamide, an over-the-counter diarrhea medication, have been steadily increasing in number and severity nationwide over five years.
Misuse of the drug is particularly alarming because non-prescription drugs like loperamide are inexpensive, readily available online and in retail stores, undetectable on routine drug tests and can be bought in large quantities at one time.
Scientists from Russia and Uzbekistan found a unified fortification system that on the northern border of ancient Bactria. This country existed in the III century BC. The fortress found blocked the border and protected the oases of Bactria from the nomads raids. During the excavations, scientists revealed the fortress citadel, drew up a detailed architectural plan and collected rich archaeological material indicating the construction, life and death of the fortress as a result of the assault.
In a world where we can travel the globe by jet, diseases that were once thought to plague faraway places can now strike close to home.
The U.S. had to learn this the hard way. In 2014, a patient harboring Ebola returned home to Dallas, Texas from Liberia. Within 15 days of this person's arrival, the Centers for Disease Control and Prevention (CDC) had confirmed two secondary cases in nurses who were treating the infected patient.
In efforts to curb our use of greenhouse gas-generating fossil fuels, plant-based biofuels are among the top contenders as alternative liquid energy sources for transportation. However, strategies to produce high yields of biomass for fuels are not a one-size-fits-all proposition, according to a study led by UC Santa Barbara professor of ecology David Tilman.
COLLEGE STATION - Endangered and invasive species may be better managed in the future with new techniques outlined by a Texas A&M University scientist and others.
Texas A&M department of wildlife and fisheries research scientist Dr. Hsiao-Hsuan "Rose" Wang and four international researchers teamed up during the National Institute for Mathematical and Biological Synthesis to publish an article in Trends in Ecology & Evolution highlighting "Niche Estimation Above and Below the Species Level."
Treating male infertility using a new IVF technique called PICSI, which is already offered in some private clinics, does not increase the likelihood of having a baby, according to the results of a randomised controlled trial.
During the PICSI treatment, sperm were selected to fertilise eggs based on whether they could bind to hyaluronan, a substance normally found surrounding the surface of eggs.
A meta-analysis finds that despite less evidence in the over 75s than in younger patients, statins reduce the risk of vascular events in older people. The research found no adverse effects of statin therapy on non-vascular mortality or cancer.
Statin therapy reduces major vascular events, and a new meta-analysis shows this is the case even in patients over 75 years of age. The research, published in The Lancet, summarises evidence from 28 randomised controlled trials, including 186,854 patients, 14,483 of whom were aged over 75.
NIMS and Hokkaido University jointly discovered that proton transfer in electrochemical reactions is governed by the quantum tunneling effect (QTE) under the specific conditions. In addition, they made a first ever observation of the transition between the quantum and classical regimes in electrochemical proton transfer by controlling potential.
Researchers at the Nagoya Institute of Technology (NITech) in Japan have demonstrated that a specific material can act as an efficient battery component for sodium-ion batteries that will compete with lithium-ion batteries for several battery characteristics, especially speed of charge.
The findings were published in Scientific Reports in November of 2018 and was headed by Naoto Tanibata, Ph.D., an Assistant Professor at the Department of Advanced Ceramics at NITech.
If you think traffic in city centers is bad now, just wait until self-driving cars emerge on the scene, cruising around to avoid paying hefty downtown parking fees.
Even worse, because cruising is less costly at lower speeds, self-driving cars will slow to a crawl as they "kill time," says transportation planner Adam Millard-Ball, an associate professor of environmental studies at the University of California, Santa Cruz.
ITHACA, N.Y. - New research from Cornell University shows zebra finches engage in socially-guided vocal learning, where they learn their songs by watching their mothers' reactions to their immature songs.
Researchers found that adult females guide juveniles' song development through specific interactions, similar to how human babies learn to talk.