الأحد، 3 يوليو 2016

ScienceDaily: Top News

ScienceDaily: Top News

Technique from biology helps explain the evolution of the American car

Posted: 01 Jul 2016 03:35 PM PDT

Researchers have taken a unique approach to explain the way in which technologies evolve in modern society. Borrowing a technique that biologists might use to study the evolution of plants or animals, the scientists plotted the "births" and "deaths" of every American-made car and truck model from 1896 to 2014.

Walking meetings could brings longer and healthier lives to office workers

Posted: 01 Jul 2016 03:35 PM PDT

Changing just one seated meeting per week at work into a walking meeting increased the work-related physical activity levels of white-collar workers by 10 minutes, according to a new study. The study suggests a possible new health promotion approach to improving the health of millions of white-collar workers who spend most of their workdays sitting in chairs.

Cerebrovascular disease linked to Alzheimer's

Posted: 01 Jul 2016 03:33 PM PDT

While strokes are known to increase risk for dementia, much less is known about diseases of large and small blood vessels in the brain, separate from stroke, and how they relate to dementia. Diseased blood vessels in the brain itself, which commonly is found in elderly people, may contribute more significantly to Alzheimer's disease dementia than was previously believed, according to new study.

Routine eye exams lead to high rate of change in vision status or care

Posted: 01 Jul 2016 03:33 PM PDT

Do you really need to get your eyes checked -- even if you haven't noticed any vision problems or eye-related symptoms? More than half of routine eye examinations in asymptomatic patients lead to a change in vision prescription or other changes in care, according to a study.

Individual mycobacteria respond differently to antibiotics based on growth and timing

Posted: 01 Jul 2016 11:23 AM PDT

Scientists have identified factors that linked to why individual mycobacteria of the same genetic background can respond differently to antibiotics. The findings shed light on the complexity of antibiotic tolerance and may improve the future design of drug regimens.

Similarities found in bee and mammal social organization

Posted: 30 Jun 2016 11:50 AM PDT

New research shows similarities in the social organization of bees and mammals, and provides insight into the genetics of social behavior for other animals. These findings use sociogenomics -- a field that explores the relationship between social behavior and the genome -- to show strong similarities in socially genetic circuits common in honey bees and mammals.

A quick and easy new method to detect Wolbachia bacteria in intact Aedes mosquitoes

Posted: 30 Jun 2016 11:44 AM PDT

Aedes aegypti mosquitoes transmit dengue, chikungunya, and Zika viruses. A study reports a new technique that could make one approach to mosquito control -- using Wolbachia bacteria that reduce the mosquitoes' ability to transmit viral pathogens -- a whole lot easier and cheaper to implement and evaluate.

Towards a cure for herpesviruses: Targeting infection with CRISPR/Cas9

Posted: 30 Jun 2016 11:43 AM PDT

Most adults carry multiple herpesviruses. Following the initial acute infection, these viruses establish life-long infections in their hosts and cause cold sores, keratitis, genital herpes, shingles, infectious mononucleosis, and other diseases. A new study suggests that attacking herpesvirus DNA with CRISPR/Cas9 genome editing technology can suppress virus replication and, in some cases, lead to elimination of the virus.
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