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79 articles from PhysOrg

Team reassesses greenhouse gas emissions from African lakes

The emissions of carbon dioxide (CO2) and methane (CH4)—the most potent greenhouse gases—into the atmosphere from African lakes are reassessed in a study undertaken by the Laboratory of Chemical Oceanography (FOCUS research unit / Faculty of Science). While it was previously assumed that these lakes were significant CO2 sources, it has since been discovered that they really emit very little...

Laser writing may enable 'electronic nose' for multi-gas sensor

Environmental sensors are a step closer to simultaneously sniffing out multiple gases that could indicate disease or pollution, thanks to a Penn State collaboration. Huanyu "Larry" Cheng, assistant professor of engineering science and mechanics in the College of Engineering, and Lauren Zarzar, assistant professor of chemistry in Eberly College of Science, and their teams combined laser writing and...

Cooking up a conductive alternative to copper with aluminum

In the world of electricity, copper is king—for now. That could change with new research from Pacific Northwest National Laboratory (PNNL) that is serving up a recipe to increase the conductivity of aluminum, making it economically competitive with copper. This research opens the door to experiments that—if fully realized—could lead to an ultra-conductive aluminum alternative to copper that...

Being mindful can improve your interactions with co-workers, new study finds

Although mindfulness originates within an individual, a Virginia Commonwealth University researcher has found the benefits do not end with this person. The real payoffs emerge when an individual's mindfulness is translated into mindful interactions and relationships. Such interactions—infused with intentionality, compassion and presence—can bring about more harmonious and healthy...

Changes in oceanographic fronts affect the gene flow among marine crab populations

In the Mediterranean and the Atlantic, the intensity and location of the oceanographic fronts that limit the gene connectivity among populations of marine crabs vary over time. These dynamic changes, described in an article published in the journal Scientific Reports, alter the gene structure of the populations of marine crabs of commercial and gastronomic interest.

How the world's rivers are changing

The way rivers function is significantly affected by how much sediment they transport and where it gets deposited. River sediment—mostly sand, silt, and clay—plays a critical ecological role, as it provides habitat for organisms downstream and in estuaries. It is also important for human life, resupplying nutrients to floodplain agricultural soils, and buffering sea level rise caused by...

Enzyme of bacterial origin promoted the evolution of longhorned beetles

Larvae of longhorned beetles develop primarily in woody tissue, which is difficult for most organisms to digest. However, longhorned beetle larvae possess special enzymes to break down the various components of the plant cell wall. Researchers at the Max Planck Institute for Chemical Ecology in Jena, Germany, have now taken a closer look at a group of digestive enzymes found only in this beetle...

A new design of sustainable cropping diversifications

Cropping systems are one of the most important components in the crop production system, which is intensified to feed a growing global population. Previous studies focused on high yield with less attention to production of nutrients and vitamins for human diet. Since the Green Revolution, a winter wheat-summer maize double cropping system has dominated the North China Plain (NCP), with the...

Researchers identify the microbes in 100-year-old snail guts

On a drizzly day in July 1920, a Colorado scientist named Junius Henderson was hiking around the Dakota Hogback, a sandstone ridge north of Boulder. There, he spotted a group of Rocky Mountain snails (Oreohelix strigosa) oozing across the ground. Henderson scooped up the mollusks and brought them back to his lab at what is now called the University of Colorado Museum of Natural History, carefully...

An engaging leadership style may boost employee engagement

A new analysis suggests that a particular leadership style dubbed "engaging leadership" can boost employees' engagement and enhance team effectiveness within the workplace. Greta Mazzetti of the University of Bologna, Italy, and Wilmar Schaufeli of Utrecht University in the Netherlands present these findings in the open-access journal PLOS ONE on June 29, 2022.

How Facebook clickbait draws users into engaging with posts

A study of 4,000 Facebook posts by news organizations provides unique insights into clickbait and user engagement. The study, published in the open access journal PLOS ONE by Anna-Katharina Jung, of the University of Duisburg-Essen, and colleagues, suggests both headlines and the text used in the posts can 'bait' users into interacting with a post, though some techniques are more successful than...