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48 articles from PhysOrg

Image: Hubble revisits the Veil Nebula

This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. In this image, new processing techniques have been applied, bringing out fine details of the nebula's delicate threads and filaments of ionized gas.

Science has not kept pace with aquaculture

Aquaculture—the farming of fish, shellfish, and other aquatic animals for food—has reached unprecedented levels of growth in recent years, but largely without consideration of its impact on individual animals, finds a new analysis by a team of researchers.

How pathogenic bacteria weather the slings and arrows of infection

Infectious diseases are a leading cause of global mortality. During an infection, bacteria experience many different stresses—some from the host itself, some from co-colonizing microbes and others from therapies employed to treat the infection. In this arms race to outwit their competition, bacteria have evolved mechanisms to stay alive in the face of adversities. One such mechanism is the...

MOF-based sensor for water quality testing

The United Nations Sustainable Development Goals, Number 6, addresses the need for access to clean water and sanitation for all. In the worldwide situation, one in three people do not have access to safe drinking water, and two out of five do not have basic hand-washing facilities with soap and water.

Fungi could manipulate bacteria to enrich soil with nutrients

A team of researchers from the Boyce Thompson Institute (BTI) has discovered a distinct group of bacteria that may help fungi and plants acquire soil nutrients. The findings could point the way to cost-effective and eco-friendly methods of enriching soil and improving crop yields, reducing farmers' reliance on conventional fertilizers.

Hidden diversity of coral more important for conservation than previously thought

In recent years, advancements in DNA sequencing have exposed a large amount of hidden diversity in reef-building corals: species that appear identical to one another but are genetically distinct. Typically ignored as they are invisible to the naked eye, a team of researchers at the California Academy of Sciences and The University of Queensland, along with over a dozen international collaborators,...

In-situ nanoscale insights into the evolution of solid electrolyte interphase shells

The interfacial decomposition products forming the so-called solid-electrolyte interphase (SEI) during the first charging/discharging significantly determine the electrochemical performances of lithium (Li) batteries. To date, the dynamic evolutions, chemical compositions, stabilities and the influencing factors of SEI films have captured the attention of many.

Oxygen-promoted synthesis of armchair graphene nanoribbons on Cu(111)

On-surface synthesis has received great attention as a method to create atomically-precise one-dimensional (1D) and two-dimensional (2D) polymers with intriguing properties. In particular, graphene nanoribbons (GNRs), a category of quasi-1D nanomaterials derived from graphene, have been widely studied due to their tunable electronic properties and potential applications in semiconductor devices,...

Depositing iron species inside ZSM-5 to oxidize cyclohexane to cyclohexanone

The directly catalytic oxidation of alkanes has high atomic economy and application value to form corresponding chemical organic products such as alcohols, aldehydes, ketones and carboxylic acid. It is challenging to achieve efficient and selective oxidation of alkanes under mild conditions due to the inert C-H bonds of alkanes.

Exploring the evolution of Earth's habitability regulated by oxygen cycle

As an essential material for the survival and reproduction of almost all aerobic organisms, oxygen is closely related to the formation and development of complex organisms. A recent review provides a systematic overview of the latest advances in the oxygen cycle at different spatial and temporal scales and the important role that oxygen plays in shaping our current habitable Earth.

A streamlined approach to determining thermal properties of crystalline solids and alloys

In a September 2020 essay in Nature Energy, three scientists posed several "grand challenges"—one of which was to find suitable materials for thermal energy storage devices that could be used in concert with solar energy systems. Fortuitously, Mingda Li—the Norman C. Rasmussen Assistant Professor of Nuclear Science and Engineering at MIT, who heads the department's Quantum Matter Group—was...