Body

Bed bugs that feed are more likely to survive pesticide exposure

Many studies have been done on how effective certain pesticides are when they are applied to bed bugs. However, most have not allowed the bed bugs to take a blood meal after being exposed to pesticides, which can change the mortality rates, according to an article in the Journal of Medical Entomology.

A look into the evolution of the eye

Zoologists from Cologne and Lyon have succeeded in discovering the internal structure of an approximately 160 million year old compound eye (Dollocaris ingens van Straelen, 1923, Thylacocephala) from the Middle Jurassic period. It was discovered at the La Voulte deposit in southeastern France. The eyes of this crustacean consist of approximately 18,000 facets, and because each of these facets contributes to the entire image as pixels contribute to a computer graphic, the eye of this crustacean belongs to the most accurate in the arthropod realm.

Use of psychosocial treatments in conjunction with medication for opioid addiction -- recommended, but supporting research is sp

January 26, 2016 - Psychosocial interventions, used together with effective medications, are a key part of recommended treatment for opioid addiction.

New fluorescent nanomaterials whose inspiration was taken from plant antenna systems

These new multifunctional materials aim to imitate the photosynthetic organisms of plants. These microorganisms consist of thousands of chlorophyll molecules embedded in a protein matrix, which provides them with a specific orientation/arrangement and intermolecular distance. One of the main characteristics of these systems is their antenna function, which enables them to harvest solar energy in a broad spectral range and transport it by means of multiple, efficient energy transfer processes to a specific reaction centre, where it is finally turned into chemical energy.

Ancient medicinal clay shows promise against today's worst bacterial infections

Naturally occurring clay from British Columbia, Canada -- long used by the region's Heiltsuk First Nation for its healing potential -- exhibits potent antibacterial activity against multidrug-resistant pathogens, according to new research from the University of British Columbia.

The researchers recommend the rare mineral clay be studied as a clinical treatment for serious infections caused by ESKAPE strains of bacteria.

The so-called ESKAPE pathogens -- Enterococcus faecium,

Pension benchmarks give consumers false impression of fund performance

Benchmarks that measure the performance of pension funds, and fees charged to consumers by investment fund managers, require greater scrutiny, suggests new research from the University of Bath.

Personal pension funds on average beat their benchmarks but the study shows this owes less to the investment skill of pension managers and more to the selection of benchmarks which are easy to outperform.

Mosquitos capable of carrying Zika virus found in Washington, D.C.

On Monday (Jan. 25, 2016), the World Health Organization announced that Zika virus, a mosquito-borne illness that in the past year has swept quickly throughout equatorial countries, is expected to spread across the Americas and into the United States.

Better access to contraception means more sex for married couples

Married couples in low- and middle-income countries around the world that use contraception are having more frequent sexual intercourse than those that do not, new research from the Johns Hopkins Bloomberg School of Public Health suggests.

Community-level violence linked to teens' risky sexual behavior

Teens' experiences with violence -- either through fear of violence, observing violent events, or being victims of violence themselves -- are associated with how likely they are to have sex and use condoms, new research from the Johns Hopkins Bloomberg School of Public Health suggests.

The findings of the Baltimore-based study could eventually lead to new ways to improve sexual health among this population. They will be presented at the International Conference on Family Planning in Nusa Dua, Indonesia.

Don't blame grey squirrels: Their British invasion had much more to do with us

DNA profiling reveals grey squirrels are not as good invaders as we think, and that humans played a much larger role in spreading them through the UK.

Grey squirrels were imported to the UK from the 1890s onwards, and the traditional view is that they spread rapidly across the UK due to their ability cope with new landscapes. Different populations of grey squirrels were thought to have interbred into a 'supersquirrel' that was better able to adapt and spread.

Delivering the Internet of the future -- at the speed of light and open sourced

New research has found, for the first time, a scientific solution that enables future internet infrastructure to become completely open and programmable while carrying internet traffic at the speed of light.

The research by High Performance Networks (HPN) group in the University of Bristol's Department of Electrical and Electronic Engineering is published in the world's first scientific journal Philosophical Transactions of the Royal Society A.

The magnetic compass of birds is affected by polarized light -- PNAS study

The magnetic compass that birds use for orientation is affected by polarised light. This previously unknown phenomenon was discovered by researchers at Lund University in Sweden.

The discovery that the magnetic compass is affected by the polarisation direction of light was made when trained zebra finches were trying to find food inside a maze. The birds were only able to use their magnetic compass when the direction of the polarised light was parallel to the magnetic field, not when perpendicular to the magnetic field.

Breaking the brain's garbage disposal: Study shows even a small problem causes big effects

ANN ARBOR, Mich. -- You wouldn't think that two Turkish children, some yeast and a bunch of Hungarian fruit flies could teach scientists much.

But in fact, that unlikely combination has just helped an international team make a key discovery about how the brain's "garbage disposal" process works -- and how little needs to go wrong in order for it to break down.

The findings show just how important a cell-cleanup process called autophagy is to our brains. It also demonstrates how even the tiniest genetic change can have profound effects on such an essential function.

Open-source laser fabrication lowers costs for cancer research

In a move that slashes 90 percent of the cost of mass-producing metastatic microtumors and therapeutic microtissues for screening and research, Rice University bioengineers have adapted techniques from the "maker" movement to reprogram a commercial laser cutter to etch up to 50,000 tiny "microwells" per hour into sheets of silicone.

The fabrication technique, which was developed with open-source software and hardware, is described in a new study published in the journal RSC Advances.

Scientists prove key aspect of evolutionary theory

Evolutionary theory predicts that pairs of chromosomes within asexual organisms will evolve independently of each other and become increasingly different over time in a phenomenon called the 'Meselson effect'.

While this event was first predicted almost twenty years ago, evidence for it has proved elusive.