Showing 20 articles starting at article 921

< Previous 20 articles        Next 20 articles >

Categories: Chemistry: Inorganic Chemistry, Ecology: Extinction

Return to the site home page

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Chemistry: Thermodynamics
Published

Sustainable technique to manufacture chemicals      (via sciencedaily.com)     Original source 

A newly published study details a novel mechanochemistry method that can produce chemicals using less energy and without the use of solvents that produce toxic waste.

Biology: Biochemistry Biology: Zoology Ecology: Endangered Species Ecology: Extinction Ecology: Nature Environmental: Biodiversity Environmental: Ecosystems Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Lost giants: New study reveals the abundance decline of African megafauna      (via sciencedaily.com)     Original source 

A groundbreaking new paper focuses on the size and abundance of living and fossil African large mammals, shedding light on the ecological dynamics behind the decline of these iconic creatures. The findings challenge previous assumptions about the causes of megafaunal extinctions in Africa and provide new insights into the restructuring of ecosystems over millions of years.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Offbeat: General Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Breakthrough: Scientists develop artificial molecules that behave like real ones      (via sciencedaily.com)     Original source 

Scientists have developed synthetic molecules that resemble real organic molecules. A collaboration of researcher can now simulate the behavior of real molecules by using artificial molecules.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Physics: General Physics: Quantum Physics
Published

Physicists discover an exotic material made of bosons      (via sciencedaily.com)     Original source 

Take a lattice -- a flat section of a grid of uniform cells, like a window screen or a honeycomb -- and lay another, similar lattice above it. But instead of trying to line up the edges or the cells of both lattices, give the top grid a twist so that you can see portions of the lower one through it. This new, third pattern is a moiré, and it's between this type of overlapping arrangement of lattices of tungsten diselenide and tungsten disulfide where physicists found some interesting material behaviors.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Energy: Nuclear Physics: General Physics: Quantum Physics
Published

Calculation shows why heavy quarks get caught up in the flow      (via sciencedaily.com)     Original source 

Theorists have calculated how quickly a melted soup of quarks and gluons -- the building blocks of protons and neutrons -- transfers its momentum to heavy quarks. The calculation will help explain experimental results showing heavy quarks getting caught up in the flow of matter generated in heavy ion collisions.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry
Published

More complex than expected: Catalysis under the microscope      (via sciencedaily.com)     Original source 

Usually, catalytic reactions are analyzed by checking which chemicals go into a chemical reactor and which come out. But as it turns out, in order to properly understand and optimize catalysts, much more information is necessary. Scientists developed methods to watch catalytic reactions with micrometer resolution under the microscope -- and the process is much more complex than previously thought.

Chemistry: General Chemistry: Inorganic Chemistry Engineering: Nanotechnology Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Physics: General
Published

The problems with coal ash start smaller than anyone thought      (via sciencedaily.com)     Original source 

Burning coal doesn't only pollute the air. The resulting ash can leach toxic chemicals into the local environments where it's kept. New research shows that the toxicity of various ash stockpiles relies heavily on its nanoscale structures, which vary widely between sources. The results will help researchers predict which coal ash is most environmentally dangerous.

Biology: Biochemistry Biology: Cell Biology Biology: General Biology: Zoology Ecology: Extinction Ecology: Invasive Species Ecology: Nature Environmental: Biodiversity Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues
Published

Air quality stations have collected vast stores of DNA by accident, a potentially 'game-changing' discovery for tracking global biodiversity      (via sciencedaily.com)     Original source 

The accelerating loss of biodiversity and increasing rate of species extinction is a major threat to ecosystems around the globe. And yet, quantifying those losses at a large scale hasn't been possible, in large part due to a lack of the required infrastructure. But a new study shows that a major source for such information already exists in the form of environmental DNA (eDNA), which has been inadvertently collected in filters by thousands of ambient air quality monitoring stations in countries around the world for decades.

Chemistry: Inorganic Chemistry Engineering: Nanotechnology Offbeat: General Physics: Optics
Published

Buckle up! A new class of materials is here      (via sciencedaily.com)     Original source 

Would you rather run into a brick wall or into a mattress? For most people, the choice is not difficult. A brick wall is stiff and does not absorb shocks or vibrations well; a mattress is soft and is a good shock absorber. Sometimes, in designing materials, both of these properties are needed. Materials should be good at absorbing vibrations, but should be stiff enough to not collapse under pressure. A team of researchers from the UvA Institute of Physics has now found a way to design materials that manage to do both these things.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Genetics Biology: Microbiology Ecology: Endangered Species Ecology: Extinction Ecology: Nature
Published

Genomes of 233 primate species sequenced      (via sciencedaily.com)     Original source 

Researchers from 24 countries have analyzed the genomes of 809 individuals from 233 primate species, generating the most complete catalog of genomic information about our closest relatives to date. The project provides new insights into the evolution of primates, including humans, and their diversity. In baboons, for example, hybridization and gene flow between different species occurred in the past and is still ongoing in several regions of their range. This makes baboons a good model for the evolution of early human lineages within and outside Africa. In addition, using a specially designed AI algorithm, the genomic data enable new insights into the genetic causes of human diseases.

Chemistry: Inorganic Chemistry Mathematics: Modeling Physics: General Physics: Quantum Physics
Published

Finally solved! The great mystery of quantized vortex motion      (via sciencedaily.com)     Original source 

Scientists investigated numerically the interaction between a quantized vortex and a normal-fluid. Based on the experimental results, researchers decided the most consistent of several theoretical models. They found that a model that accounts for changes in the normal-fluid and incorporates more theoretically accurate mutual friction is the most compatible with the experimental results.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Physics: Optics
Published

Flat fullerene fragments attractive to electrons      (via sciencedaily.com)     Original source 

Researchers have gained new insights into the unique chemical properties of spherical molecules composed entirely of carbon atoms, called fullerenes. They did it by making flat fragments of the molecules, which surprisingly retained and even enhanced some key chemical properties.

Chemistry: Inorganic Chemistry Engineering: Graphene
Published

Producing large, clean 2D materials made easy      (via sciencedaily.com)     Original source 

An international team of surface scientists has now developed a simple method to produce large and very clean 2D samples from a range of materials using three different substrates.

Chemistry: Inorganic Chemistry Chemistry: Thermodynamics Engineering: Nanotechnology Physics: General
Published

Researchers finds a way to reduce the overheating of semiconductor devices      (via sciencedaily.com)     Original source 

Scientists have identified a method for improving the thermal conductivity of thin metal films in semiconductors using surface waves for the first time in the world.

Biology: General Biology: Zoology Ecology: Endangered Species Ecology: Extinction Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Environmental: Ecosystems Environmental: General
Published

Forest birds with short, round wings more sensitive to habitat fragmentation      (via sciencedaily.com)     Original source 

Tropical forest birds, which tend to have wings that are short and round relative to their body length and shape, are more sensitive to habitat fragmentation than the long-, slender-winged species common in temperate forests.

Biology: Biochemistry Biology: General Ecology: Endangered Species Ecology: Extinction Ecology: General Ecology: Nature Ecology: Research Environmental: Biodiversity Environmental: General Geoscience: Environmental Issues
Published

Study identifies boat strikes as a growing cause of manatee deaths in Belize      (via sciencedaily.com)     Original source 

The endangered Antillean manatee faces a growing threat from boat strikes in Belize, according to a new study that raises concerns about the survival of what had been considered a relatively healthy population. Belize hosts a population of around 1,000 manatees. With the growth of tourism in recent decades, however, Belize has seen a substantial increase in boat traffic, making boat strikes an increasingly important cause of manatee deaths and injuries.