Aryl radical formation by aryl halide bond cleavage by a N-heterocyclic carbene catalyst
Aryl halides with a benzene ring directly bonded to a halogen atom are readily available and chemically stable, so they are used as a source of benzene rings in organic synthesis. For example, a chemical reaction that generates a highly reactive aryl.....»»
Self-adjusted reaction pathway enables efficient oxidation of aromatic C-H bonds over Co@Y catalyst
The selective oxidation of aromatic C-H bonds has drawn significant attention in both industrial and fine chemistry due to its crucial role in converting readily- and cheaply-available aromatic hydrocarbons into high-value-added oxygenated products f.....»»
Researchers train a bank of AI models to identify memory formation signals in the brain
An international research collaboration between Vanderbilt University and the Madrid-based de la Prida lab in the Cajal Institute led to the development of AI models that detect and analyze hippocampal ripples, which are considered biomarkers of memo.....»»
Researchers realize hydrogen formation by contact electrification of water microdroplets and its regulation
Direct utilization of water as a source of hydrogen atoms and molecules is fundamental to the evolution of the ecosystem and industry. However, liquid water is an unfavorable electron donor for forming these hydrogen species due to its redox inertnes.....»»
Peptides on interstellar ice: Study finds presence of water molecules not a major obstacle for formation
A research team led by Dr. Serge Krasnokutski from the Astrophysics Laboratory at the Max Planck Institute for Astronomy at the University of Jena had already demonstrated that simple peptides can form on cosmic dust particles. However, it was previo.....»»
Researchers propose new formation model for massive hot subdwarfs
In a new study published in the The Astrophysical Journal, Dr. Li Zhenwei and his collaborators from Yunnan Observatories of the Chinese Academy of Sciences (CAS), and Dr. Zhang Yangyang from the Zhoukou Normal University, proposed a new formation mo.....»»
Trash to treasure—Researchers turn metal waste into catalyst for hydrogen
Scientists have found a way to transform metal waste into a highly efficient catalyst to make hydrogen from water, a discovery that could make hydrogen production more sustainable......»»
Two men shove boulders off ancient rock formation in Nevada, wrecking it, video shows
Two men shove boulders off ancient rock formation in Nevada, wrecking it, video shows.....»»
Palladium nanocluster catalyst supports highly efficient and regioselective hydrogenation of epoxides
Alcohols are widely applied in life sciences and the chemical industry. Selective hydrogenation of epoxides using hydrogen molecules as a reductant is considered to be one of the most facile and atom-economical strategies for alcohol synthesis. Howev.....»»
Discovery of organic catalyst could lead to cheaper fuel cells
With atmospheric carbon dioxide at record highs, the search for clean-energy alternatives to the use of fossil fuels is growing increasingly urgent......»»
New catalyst allows energy-friendly ammonia production for fertilizers and alternative fuel
Researchers led by Satoshi Kamiguchi at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan have discovered a greener way to produce ammonia, an essential compound used in fertilizers......»»
Formation-flying spacecraft could probe the solar system for new physics
It's an exciting time for the fields of astronomy, astrophysics, and cosmology. Thanks to cutting-edge observatories, instruments, and new techniques, scientists are getting closer to experimentally verifying theories that remain largely untested. Th.....»»
Giant rogue waves: Southern Ocean expedition reveals wind as key cause
A University of Melbourne expedition to the southernmost waters encircling Antarctica has discovered that wind drives the formation of colossal rogue waves, and that these unpredictable waves occur more frequently than scientists had previously thoug.....»»
Researchers find baby stars discharge plume-like "sneezes" of magnetic flux during formation
Kyushu University researchers have shed new light into a critical question on how baby stars develop. Using the ALMA radio telescope in Chile, the team found that in its infancy, the protostellar disk that surrounds a baby star discharges plumes of d.....»»
Novel UV broadband spectrometer improves air pollutant analysis
Sunlight has a major influence on chemical processes. Its high-energy UV radiation in particular is strongly absorbed by all materials and triggers photochemical reactions of the substances present in the air. A well-known example is the formation of.....»»
New spectrometer helps identify alternative catalyst materials for affordable hydrogen fuel cells
Fuel cells are quickly becoming a viable, clean energy alternative to commonly used fossil fuels, such as gasoline, coal, and oil. Fossil fuels are non-renewable energy resources that release carbon dioxide into the atmosphere......»»
LSD1 promotes FSH responsive follicle formation by regulating autophagy and repressing Wt1 in granulosa cells: Study
A study published in Science Bulletin has been led by Prof. Chao Wang (China Agricultural University), Prof. Guoliang Xia (China Agricultural University) and Prof. Fengchao Wang (National Institute of Biological Sciences)......»»
Can the bias in algorithms help us see our own?
Algorithms were supposed to make our lives easier and fairer: help us find the best job applicants, help judges impartially assess the risks of bail and bond decisions, and ensure that health care is delivered to the patients with the greatest need......»»
The sun was born when a dense gas cloud collapsed 4.6 billion years ago
While the upcoming total solar eclipse is a special moment to reflect on our place in the universe, scientists have been studying the birth of the sun and the formation of our solar system for a long time......»»
Scientists unveil ruthenium catalyst for new reaction discovery and optimization
Researchers at The University of Manchester have developed a new catalyst which has been shown to have a wide variety of uses and the potential to streamline optimization processes in industry and support new scientific discoveries......»»
A simple, inexpensive way to make carbon atoms bind together
The active ingredient in many drugs is what's known as a small molecule: bigger than water, much smaller than an antibody and mainly made of carbon. It's tough, however, to make these molecules if they require a quaternary carbon—a carbon atom bond.....»»