Articles tagged with Chemical Structure
A unique stellar structure in the Milky Way, C-19, has been found to consist of stars with extremely low metallicity, challenging current understanding of star formation models. This discovery provides a direct window into the earliest ages of star formation and the development of stellar structures in the distant past.
Researchers at Washington University in St. Louis described for the first time the structure of CcsBA, a protein that transports heme and attaches it to cytochromes. The study revealed two conformational states of CcsBA, allowing scientists to characterize the enzyme mechanism.
Researchers trained an artificial intelligence algorithm to predict the next designer drugs before they are even on the market, allowing law enforcement agencies to identify and regulate new versions of dangerous psychoactive drugs. The model was tested against 196 new designer drugs and found nearly all were present in its generated set.
Researchers have developed a new light-emitting material that doubles the intensity of existing LEDs while also being more energy-efficient. The material, cerium-doped zinc oxide, has the potential to be used in commercial LED lighting applications and could make lighting more affordable for households and businesses worldwide.
Researchers focus on cathode materials in rechargeable aluminum batteries to improve electrochemical performance. Current studies classify cathode materials into four groups based on ion charge carriers and discuss their respective electrode structures, optimization strategies, and charge storage mechanisms.
Researchers developed a predictive tool using %V bur (min) to categorize phosphine structures as active or inactive in many experimental datasets. This advancement will facilitate organometallic chemistry and catalysis, enabling easier computation and prediction of phosphine reactivity.
A team of researchers identified the genes required for carthamin biosynthesis, a historic red colorant in safflowers. The discovery could lead to large-scale production of carthamin through metabolic engineering.
Researchers from the National University of Singapore have identified three new urinary biomarkers that can detect consumption of ADB-BUTINACA, an emerging synthetic cannabinoid. The discovery will help boost global surveillance of synthetic cannabinoid abuse and aid in tackling the increasing abuse of this substance.
A new diagnostic tool allows for the visualization of catalysts in three dimensions, enabling researchers to study complex chemical reactions and improve materials. The technique, operando X-ray spectroscopy, provides detailed information on the structure and function of active catalysts.
Lauren Greenlee will investigate iron and oxygen atoms using X-ray spectroscopy to improve battery materials and water treatment. The project aims to design catalysts for polymer conversion and recycling, leading to enhanced industrial applications.
Researchers developed a stable oxide scaffold for perovskite solar cells, allowing for easy removal and replacement of the material while maintaining performance. The new design achieved around 11.08% power conversion efficiency upon perovskite replacement.
Scientists at the University of South Carolina have developed a new method using machine learning and synthetic chemistry to design and make gas-filtering membranes more quickly. The discovery could revolutionize materials design, reducing trial-and-error work and enabling faster development of effective membranes.
A new study reveals that cicada wings are coated in a stew of hydrocarbons, fatty acids, and oxygen-containing molecules, which contribute to their ability to repel water and kill microbes. The ratio of surface chemicals differs between two cicada species, and altering the surface chemicals changes the nanopillar structure.
Researchers at Uppsala University discovered that the plant had likely accumulated antibiotics from contaminated soil, not produced by nature.
Researchers successfully grow crystals of various materials onto the surface of carbon nanotubes, paving the way for unique properties in 1D vdWs. This breakthrough enables potential applications in flexible electronics, lasers, solar energy conversion, and more.
A study examined water chemistry, macroinvertebrate community health, and microbial community structure in 25 streams with varying levels of oil and gas development intensity. The researchers found no significant associations between OG development intensity and chemical tracers or measures of ecosystem health.
Scanning Raman picoscopy enables visualization of vibrational modes and direct construction of molecule structures. Researchers achieve Ångström-resolved imaging, correlating local vibrations with constituent groups to assemble molecules in real space.
The study investigates the defect dynamics in ceria nanowires under heating using in situ aberration-corrected TEM. The findings show that defects grow into regular rhombic or hexagon shapes at high temperatures, introducing more reactive sites and maintaining the cubic fluorite structure.
A study suggests that ancient rock structures on Earth may be mistaken for fossils, which could aid future Mars missions. Research by University of Edinburgh scientist Sean McMahon created synthetic iron-rich formations in the lab, mimicking those found on Mars.
Researchers created manganite nanowires with controlled quenched disorder, revealing enhanced magnetoresistance. Quenched disorder plays a significant role in complex oxide systems.
Researchers at Purdue University have developed nanochain structures made of antimony that can store more lithium ions and stabilize battery performance. The new design shows promise for increasing battery lifespan and reducing charging times.
Researchers develop synthetic compartmentalization system that mimics biological functions, allowing for controlled chemical reactions and separation of materials. The system uses electrical charge to regulate the flow of materials and can be used in various applications such as drug delivery, wound treatment, and water purification.
Researchers at the University of Liverpool have synthesized a flexible crystalline porous material that can change its structure in response to its environment, mimicking the properties of proteins. This breakthrough enables the design of materials that can dynamically select the structure needed for specific tasks.
Lehigh University's Kelly Schultz and her team discovered that the structure of cross-linked polymeric gels is independent of concentration until a limit, called the overlap concentration. This characteristic could improve the tailoring of implantable scaffolds to regrow tissue.
Researchers at Lobachevsky University have synthesized a high-purity sample of barium hypomanganate chloride and characterized its crystal structure and chemical environment. The study has stabilized the degree of manganese oxidation and measured its isobaric heat capacity, revealing anomalous behavior below 15K.
The new magnetostrictive transducer from SwRI offers more precise inspections and reduces human error in structural health monitoring. It can withstand extreme temperatures and automatically adjusts frequencies, making it an extremely reliable sensor for detecting material flaws and corrosion.
Researchers used visible/near-infrared spectroscopy to predict breakthrough curves of dissolved chemicals in intact soil columns. The new technology estimated mass transport with a high degree of accuracy and has potential for cost-effective and efficient monitoring of dissolved chemical transport.
Researchers introduce concept of 'live' process emerging from interactions between molecules and environment, identifying earliest hallmark of life. They suggest this process could lead to emergence of complex living organisms with characteristics currently known.
Scientists at UC Berkeley have discovered a long-sought carbon structure called schwarzite, which has unique electronic, magnetic, and optical properties. The negatively curved schwarzites were formed inside zeolite pores and have potential applications in supercapacitors, battery electrodes, and gas storage.
The NPS Data Hub allows experts to collaborate and share data on new drug variants, enabling faster identification of emerging threats. By facilitating real-time discussion and collaboration, the Data Hub aims to shorten the time lag between discovery of a new drug and its distribution in law enforcement databases.
A novel separation technique using density gradient ultracentrifugation is introduced for colloidal nanostructures. The method demonstrates versatility in separating nanoparticles according to their unique properties.
Researchers created a sustainable wood carbon sponge material by treating balsa wood, making it highly compressible and suitable for strain sensing and various applications. The material's unique structure provides exceptional mechanical and fatigue resistance, outperforming most reported compressible carbonaceous materials.
A team of University of Illinois bioengineers has developed a new technique to characterize metal organic frameworks (MOFs) using infrared chemical imaging. This method allows for non-destructive analysis and provides detailed information on the structure and chemistry of MOFs, enabling better detection and utilization of these materials.
A US Department of Energy laboratory has developed a one-step 3D printing method for creating catalysts, which could lead to more efficient chemical reactions and improved industrial processes. The new technique uses inexpensive commercial printers to create structures with built-in catalytic properties.
Researchers created three-dimensional structures that mimic natural enzymes, shedding light on folding processes and potential treatments for diseases like Alzheimer's and Parkinson's. The breakthrough allows for the analysis of misfolded proteins, a key factor in these conditions.
A team of researchers led by Carnegie Mellon University chemist Roberto R. Gil and Universidade Federal de Pernambuco chemist Armando Navarro-Vázquez has developed a program that automates the process of figuring out a molecule's three-dimensional structure, reducing human error and shortening the pipeline of drug discovery.
A new study has resolved a long-standing debate on coral skeletal development by discovering a biologically controlled process. The research, published in Science, used advanced imaging techniques to reveal that coral skeletons form from organic matter and immature aragonite particles.
The researchers created a cheminformatics map of the 2,700 dyes in the Max A. Weaver Dye Library, identifying 150 chemically unique dyes representative of the library. These dyes are now publicly available in the ChemSpider database, offering potential solutions for human health and environmental issues.
Researchers explore graphene's ability to enhance cyclic stability, flexibility, and power in energy storage applications. Graphene-based hybrids with conductive polymers and metal oxides demonstrate promising results for wearable and flexible devices.
Scientists from the University of Wisconsin-Madison solved the structure of an enzyme that attacks toluene, a chemical derived from wood and oil. The study reveals a less reactive form of iron-oxygen intermediate that avoids side reactions, offering insights for synthetic chemists.
Scientists have completed a model of the P22 virus's chemical structure with unprecedented detail, revealing the building blocks of proteins and their interactions. This breakthrough allows for more information about biochemistry and provides detailed annotations for future experiments.
Researchers developed predictive models that accurately anticipate the smell of molecules based on just a handful of features, outperforming traditional methods. The DREAM Olfaction Prediction Challenge demonstrated the potential for crowdsourced competition to advance our understanding of scent perception.
The sensing skin detects cracks and harmful chemicals in structures using three layers: one for crack detection, a buffer layer, and another with metal nanoparticles that respond to specific chemicals. The technology can be applied to various materials and can detect problems early on.
Nanocatalysts display significant catalytic capability due to increased surface area and multiple catalytic centers. They play a crucial role in enhancing yield and TON in specific chemical products, including chemo-selective and coupling reactions.
Scientists have found genetic structures similar to other viruses in the Flaviviridae family in the Zika virus genome, which may serve as potential antiviral drug targets. The study identified seven G-quadruplexes shared with viral cousins and a unique structure consistent within the Zika virus strains.
Scientists at Princeton University have found a common underlying connection between diverse materials exhibiting extreme magnetoresistance. This property could be useful for developing new types of magnetic memory devices.
Researchers have demonstrated the creation of a chemically active 3D-printed structure that can mitigate pollution. By adding nanoparticles to a polymer, they created a matrix that breaks down organic pollutants when exposed to natural light.
A textile engineer at Technische Universität Dresden has developed a flexible weaving technology for producing three-dimensional textile structures with excellent structural mechanical properties. The technology can be used in various applications such as aircraft fuselage, car bodies, and machine enclosures.
Jennifer Stockdill, a Wayne State University assistant professor of chemistry, has received a $650,000 NSF Faculty Early Career Development Award to investigate the reactivity of neutral aminyl radicals. The award also supports outreach programs aimed at promoting diversity in STEM fields among middle school girls and graduate students.
A new family of chemical structures, known as zeolites, have been created by an international team of researchers to separate out carbon dioxide more effectively from fuel gases. These complex structures show rapid and selective uptake of CO2, a key step in carbon capture and storage strategies.
Researchers developed a predictive model associating chemical fragments with positive or negative effects in 20% of human diseases. The analysis of 10,000 chemical molecules revealed new knowledge on safer drug design and potential uses for current drugs.
Scientists from Brandeis University and the University of Pittsburgh validate Alan Turing's theory of morphogenesis, demonstrating that identical cell-like structures can differentiate into various patterns through intercellular reaction-diffusion. The research has implications for biological development, materials science, and soft ro...
Scientists developed a new imaging technique that maps an object's three-dimensional distribution of its nano-properties in real time. This 'X-ray vision' can be used to study materials, geology, environmental science and medical research.
Chemical gardens, a school experiment, inspire origin-of-life research at hydrothermal vents. Scientist test electric currents flowing from flower-like structures in chemical gardens.
Researchers from 11 countries conduct the most comprehensive study on ice types and structures, revealing its impact on climate change and origin of life. The study also analyzes the un Predictability of avalanches and the presence of ice on Mars and comets.
Researchers at the University of Bristol have solved the 70-year-old mystery of stipitatic acid synthesis by identifying genes responsible for its production. The discovery has far-reaching implications for understanding organic chemistry and potentially leads to new drugs with antibacterial and antimalarial properties.
Scientists at Northwestern University developed a powerful analytical method called nanocombinatorics to rapidly identify the chemical and physical structures that cue stem cells to become osteocytes. The researchers successfully directed stem cell differentiation without additional chemical cues, demonstrating better control than curr...
PETA has developed a free resource to facilitate the use of QSARs under the EU REACH Program, helping companies replace animal tests with computational modeling. The guide lists publicly available online resources and selected contact points for support on QSAR use.
Scientists at the Weizmann Institute of Science have developed a method to grow semiconductor nanowires on a surface, producing relatively long, orderly, aligned structures. This breakthrough enables the production of enhanced electronic and optical properties suitable for various applications.
Carbon nanotubes have been found to be reactive when a transition metal atom is present within the nanotube cavity, challenging previous scientific thinking. This discovery has significant implications for the development of new technologies, including gas storage devices and electronic components.