Showing 20 articles starting at article 1881

< Previous 20 articles        Next 20 articles >

Categories: Biology: Biochemistry, Chemistry: Biochemistry

Return to the site home page

     (via sciencedaily.com)     Original source 

A new discovery takes its inspiration from Greek mythology. The compound is described as a chimera, because it battles a toxic cause of Parkinson's in two ways.

     (via sciencedaily.com)     Original source 

With DNA recovered from animal tracks, scientists revealed information about the ancestry and microbial community of bobcats without having to sample the animal directly.

     (via sciencedaily.com)     Original source 

Transmitting an effect known as a domino reaction using redox chemistry has been achieved for the first time.

     (via sciencedaily.com)     Original source 

Chemists have presented a new approach in which a single carbon atom is inserted into the carbon skeleton of cyclic compounds in order to adjust the ring size. The method could be relevant, for example, for the production of active ingredients in new pharmaceutical products.

     (via sciencedaily.com)     Original source 

An experimental study has shown that a type of skin bacterium can efficiently be engineered to produce a protein to regulate sebum production. This application could treat acne without compromising the homeostasis of the entire skin microbiome.

     (via sciencedaily.com)     Original source 

Robots and autonomous vehicles can use 3D point clouds from LiDAR sensors and camera images to perform 3D object detection. However, current techniques that combine both types of data struggle to accurately detect small objects. Now, researchers have developed DPPFA Net, an innovative network that overcomes challenges related to occlusion and noise introduced by adverse weather. Their findings will pave the way for more perceptive and capable autonomous systems.

     (via sciencedaily.com)     Original source 

Researchers have carried out complex genetic analyses of hundreds of pigs and humans to identify differences and similarities. This new knowledge can be used to ensure healthier pigs for farmers and can help the pharmaceutical industry breed better laboratory pigs for testing new medicines.

     (via sciencedaily.com)     Original source 

A new study describes nine new species of carnivorous land snails, all of which are so small they could fit together on a U.S. nickel. They present a rare opportunity to study a group that in many other places is disappearing fast. Worldwide, mollusks account for more than 50% of all recorded extinctions since the year 1500, and many of these were land snails from Pacific islands.

     (via sciencedaily.com)     Original source 

A new study identifies, in mice, a critical communication pathway connecting the brain and the body's fat tissue in a feedback loop that appears central to energy production throughout the body. The research suggests that the gradual deterioration of this feedback loop contributes to the increasing health problems that are typical of natural aging.

     (via sciencedaily.com)     Original source 

Africa has a huge diversity of large mammals, but their evolutionary relationships and movement across the continent over time often remain a mystery. A new scientific study sheds light on longstanding questions about the interplay between evolution and geography in one of these mammals, namely the iconic African bushpig, and helps settle a major question regarding prehistoric human activities shaping biodiversity patterns in Africa.

     (via sciencedaily.com)     Original source 

In recent years, there has been rising concern that tiny particles known as microplastics are showing up basically everywhere on Earth, from polar ice to soil, drinking water and food. Formed when plastics break down into progressively smaller bits, these particles are being consumed by humans and other creatures, with unknown potential health and ecosystem effects. One big focus of research: bottled water, which has been shown to contain tens of thousands of identifiable fragments in each container. Now, using newly refined technology, researchers have entered a whole new plastic world: the poorly known realm of nanoplastics, the spawn of microplastics that have broken down even further. For the first time, they counted and identified these minute particles in bottled water. They found that on average, a liter contained some 240,000 detectable plastic fragments -- 10 to 100 times greater than previous estimates, which were based mainly on larger sizes.

     (via sciencedaily.com)     Original source 

A global study shows that the effects of extreme drought -- which is expected to increase in frequency with climate change -- has been greatly underestimated for grasslands and shrublands. The findings quantify the impact of extreme short-term drought on grassland and shrubland ecosystems across six continents with a level of detail that was not previously possible. It is the first time an experiment this extensive has been undertaken to generate a baseline understanding of the potential losses of plant productivity in these vital ecosystems.

     (via sciencedaily.com)     Original source 

Researchers have discovered a molecular 'barcode' system used by disease-causing bacteria to distinguish between beneficial and toxic molecules.

     (via sciencedaily.com)     Original source 

An international team of researchers has found that Africa's birds of prey are facing an extinction crisis. The report warns of declines among nearly 90% of 42 species examined, and suggests that more than two-thirds may qualify as globally threatened.

     (via sciencedaily.com)     Original source 

Certain populations of mosquitoes are more heat tolerant and better equipped to survive heat waves than others, according to new research.

     (via sciencedaily.com)     Original source 

Researchers have developed a new AI-powered algorithm to help understand how different cells organize themselves into particular tissues and communicate with one another.

     (via sciencedaily.com)     Original source 

Some bacterial membrane transporters work almost like freight elevators to transport substances through the cell membrane into the interior of the cell. The transporter itself spans the bacterial membrane. Like a forklift, a soluble protein outside the bacterium transports the substance to the 'elevator' and unloads its cargo there. The freight elevator transports it to the inside of the cell, in other words to another floor.

     (via sciencedaily.com)     Original source 

A groundbreaking study has found that evolution is not as unpredictable as previously thought, which could allow scientists to explore which genes could be useful to tackle real-world issues such as antibiotic resistance, disease and climate change. The study challenges the long-standing belief about the unpredictability of evolution, and has found that the evolutionary trajectory of a genome may be influenced by its evolutionary history, rather than determined by numerous factors and historical accidents.

     (via sciencedaily.com)     Original source 

Researchers have developed a sustainability metric for the ecological design of plastic products that have low persistence in the environment. Adhering to this metric could provide substantial environmental and societal benefits, according to a new study.

     (via sciencedaily.com)     Original source 

Whirligig beetles, the world's fastest-swimming insect, achieve surprising speeds by employing a strategy shared by fast-swimming marine mammals and waterfowl, according to a new study that rewrites previous explanations of the physics involved.