Articles tagged with Chemical Composition
Air quality in São Paulo fell far below standards and WHO recommendations despite reduced emissions during the pandemic. The study identified four main sources of aerosols: heavy vehicles, soil dust, light vehicles, and local sources, including industrial emissions and fires.
A Harvard Pilgrim Health Care Institute study found a strong link between higher prenatal PFAS exposure and increased rates of obesity and body fat in adolescent offspring. Higher levels of certain PFAS were associated with a 13-59% increase in the risk of obesity, highlighting the long-term consequences of PFAS for developmental health.
Researchers from UNIGE and ISVV have successfully identified the chemical mark of red wines from seven major Bordeaux estates with 100% accuracy using artificial intelligence. The team analyzed gas chromatograms from 80 wines and applied dimensionality reduction techniques to develop a reliable model.
Researchers at Xi'an Jiaotong-Liverpool University have developed a sensitive and robust pH sensor that can detect pH variation in just a few microliters of samples. The new sensor uses novel materials and methods to overcome the current method's limitations, which are not sensitive enough or fragile for commercial-scale use.
Researchers analyzed whiteschist from the Dora Maira Massif to study rapid upward movements, revealing a sharp decrease in pressure or decompression. This suggests that UHP rocks may not have reached a depth of 120 kilometers before returning to the surface.
Researchers have engineered a range of new single-walled transition metal dichalcogenide (TMD) nanotubes with different compositions, chirality, and diameters. The ability to synthesize diverse structures offers insights into their growth mechanism and novel optical properties.
A team of researchers used ALMA to observe the central region of Messier 77, a galaxy hosting an active supermassive black hole. The study found that molecules commonly found in galaxies break down along the path of bipolar jets emanating near the black hole, while distinctive molecules increase in concentration.
Bioarcheological analysis suggests Pompeii victims died from asphyxiation despite potential contamination from plaster casts. The study's findings challenge traditional assumptions about the preservation process in the ancient city.
Dr. McKay will investigate the chemical composition of chromophores in DOM using advanced analytical tools and conduct measurements at the National High Magnetic Field Laboratory. His research aims to enhance predictions regarding DOM behavior and reactivity in the environment.
A study published in Cell Death & Disease has characterized the cellular composition and spatial architecture of tumor microenvironment in human multiple primary lung cancers. The researchers identified a previously undescribed sub-population of epithelial cells, CLDN2+ alveolar type II (AT2), specifically enriched in MPLCs.
A University of Illinois study found unique Mexican black and pinto bean varieties to be high in phenolic compounds and anthocyanins, which have antioxidant and anti-inflammatory properties. The research also identified potential applications for the seed coat extracts in the food industry and cosmetics.
A collaborative research team created an experimental platform to control the atomic-level structure of high-entropy alloy surfaces and test their catalytic properties. Their study found that the surfaces performed better in oxygen reduction reactions compared to other materials, indicating a 'pseudo-core-shell-like structure' contribu...
Researchers at the University of Missouri have developed a new type of nanoclay material that can be customized to perform specific tasks. This breakthrough could lead to advances in fields such as medical science, environmental science, and more.
Researchers use portable devices to analyze paint composition and layering on ancient Egyptian paintings, revealing alterations made over time. Two paintings from the Theban Necropolis were studied, uncovering changes to a figure's arm and royal items depicted on a portrait of Ramesses II.
Researchers from Spain used high-power ultrasound technology to treat Monastrell grapes, resulting in improved color and sensory profile of the rosé. The study found that sonication enhanced the extraction of volatile compounds, such as terpenes, which improve aroma.
Researchers at WVU's forensic lab discovered how organic and inorganic compounds in gunshot residue differ in their persistence on surfaces and transfer. This breakthrough allows crime scene investigators to distinguish between 'greener' and traditional ammunition, enabling faster and more informed decisions at crime scenes.
The 2023 International Venus Observation Campaign aims to characterize the planet's atmosphere near the cloud-top level from three locations in the solar system. Key findings include the discovery of unknown UV absorbers in the upper clouds, which will be studied using data from JAXA's Akatsuki orbiter and ground-based telescopes.
Researchers discovered the abundance of rock-forming elements in WASP-76 b's atmosphere, which matches its host star and our own Sun closely. The team found that certain elements are depleted due to temperature conditions, providing insight into the sensitivity of giant planet atmospheres.
Daniel Herwartz receives 2 million euros funding from ERC Consolidator Grant for his project KinO, which explores temperature fluctuations associated with mass extinction and improves temperature reconstructions of ancient ocean temperatures.
A new camera technology developed by Aarhus University and Newtec Engineering A/S aims to make it easier to recycle plastic materials. The technology uses hyperspectral imaging to analyze the chemical composition of plastic waste, allowing for the removal of unwanted additives that may be banned or harmful.
A team of astronomers has discovered chemical traces of supermassive stars in globular proto-clusters, born 440 million years after the Big Bang. The study suggests that these 'celestial monsters' enriched the original gas cloud with chemical elements, explaining abundance anomalies in their stars.
Researchers have developed a modular system to recognize chiral molecules, which could lead to more effective methods of separating enantiomers in drugs. The system uses metallopolymers with chirality to sense two enantiomeric molecules through electrochemical interactions.
Researchers used NASA InSight data to directly measure Mars' core properties, finding a completely liquid iron-alloy core with high percentages of sulfur and oxygen. This discovery provides new insights into Martian formation and geological differences between Earth and Mars, potentially impacting planetary habitability.
Researchers found that Carnivorous Sarracenia pitcher plants emit distinct odors to lure in specific groups of prey. The plant's volatile organic compounds significantly impact prey composition, highlighting the complex interactions between carnivorous plants and their environment.
Researchers found that metal-poor stars, with fewer heavy elements, emit less intense ultraviolet radiation into space. This allows their planets to form a protective ozone layer, making conditions more life-friendly. The study suggests that as the universe ages, it becomes increasingly unfavourable for complex life on new planets.
Researchers analyzed manillas and found a strong similarity between the metal composition of Benin Bronzes and Portuguese trade prior to the 18th Century. The consistency in metal composition suggests that African metalsmiths were selective about what metal they used, with German brass being the principle source.
Researchers developed a chemical scissors-mediated structural editing strategy to regulate the structure and elemental composition of MAX phases/MXenes. This approach enables the creation of novel MAX phase and MXene materials with improved functional applications.
Researchers at the University of Groningen have discovered the exact structure of polydopamine coatings, which could lead to new applications in surface adhesion and neurodegenerative disease treatment. The study found that these coatings form through auto-oxidation, crosslinking and isomerization processes.
Studies elucidate key aspects of traditional Chinese compounds and modern cancer therapeutics, highlighting the efficacy of R. serra in treating colitis and identifying active components of Gan Cao in treating pneumonia. A new radiolabeled antibody-based probe for detecting PD-L1 expression in cancers also provides a novel approach to ...
Researchers utilized the James Webb Space Telescope to observe dense interstellar clouds, revealing a treasure trove of pristine ices from the early universe. The study provides new insights into chemical processes in one of the coldest places in the universe, offering clues on molecular origins and sulfur storage.
A team led by Professor Thorsten Hoffmann uses small, portable observation drones equipped with miniaturized sensors to analyze volcanic gases and predict eruptions. The ratio of carbon dioxide levels to sulfur dioxide can reveal the likelihood of an impending eruption.
A recent study identifies over 10,000 chemical substances used in plastic production, highlighting the complexity of plastics and their negative impacts on human and ecosystem health. The diversity of chemicals makes it difficult to achieve standardized plastic formulations, posing challenges to recycling and pollution solutions.
Researchers developed a technique to 'see' fine structure and chemical composition of human cells with high resolution. The new method uses infrared light to reveal chemical signatures without fluorescent labeling.
The study analyzed experimental parameters, nanomaterial types, and plant exposure duration. It found that many studies lacked positive controls and had short durations compared to crop lifecycles.
Researchers from Osaka University have successfully detected carbon, nitrogen, and oxygen in samples from near-Earth asteroid Ryugu using muon non-destructive analysis. The findings suggest that CI chondrites may be contaminated with terrestrial materials, challenging previous understanding of the solar system's chemical compositions.
Researchers at Osaka Metropolitan University have discovered a unique phase transition in crystals that combines crystalline and amorphous characteristics. This finding has significant implications for developing hybrid materials with improved properties for use in extreme environments, such as outer space.
A new study of 25 comets has found strong evidence that comet outgassing could be the source of the chemical composition of the early solar system. The research, led by Olga Harrington Pinto, measured the ratio of water, carbon dioxide, and carbon monoxide gases from comets to test predictions of solar system formation and evolution.
Researchers used infrared scattering-type scanning near field microscopy to analyze two Stradivari violins, finding a protein-based layer between the wood and varnish. This discovery could help replicate historic instruments in modern times.
Researchers discovered that plants can regulate their microbiome through the secretion of flavonoids, which affect beneficial and harmful microorganisms around plant roots. This delicate balance helps protect plants from parasitic nematodes, reducing susceptibility to infection.
Researchers found that the return of radiolarians, a tiny marine organism, helped restore habitable conditions after the massive extinction event. The study suggests that every microorganism plays a vital role in regulating biogeochemical cycles and conservation of the planet.
A Cornell research team synthesized 16 types of rock surfaces that may form on exoplanets, providing a tool to decipher their composition. The study's findings offer clues to early planetary evolution and the chemical makeup of distant planets.
A team of researchers from NIST, UW-Madison, and Argonne National Laboratory identified key compositions that enable consistent 3D-printing of 17-4 PH stainless steel with favorable properties. The new findings could help producers cut costs and increase manufacturing flexibility.
A Brazilian research team has developed a novel method to sort specialty and standard coffee beans using multispectral imaging and machine learning. The technique, which does not require roasting or human intervention, uses images of the beans at different wavelengths to distinguish between quality levels.
Researchers at Arizona State University have developed a machine learning model to predict melting temperatures for any compound. The model enables faster and more accurate calculations of melting points, which is critical for designing high-performance materials in various industries.
A team of WVU researchers has developed a biodegradable composite material using cotton fibers from recycled mattresses, with the goal of replacing single-use plastics. The new material will be created through 3D printing and can be used to produce various consumer products, such as beverage straws and disposable packaging.
A collaborative initiative aims to establish common protocols for assessing and comparing diffuse optics systems used in medical diagnosis. The study presents the results of a multi-laboratory comparison of 12 institutions and 28 systems, proposing simple numeric values for easy comparison across instruments.
Researchers found that cats' damage to catnip releases higher amounts of strong insect repellents, which are 10-fold higher than from intact leaves. This altered iridoid mixture promotes a prolonged response in cats, effectively repelling mosquitoes.
Researchers studied over 500 stars in a region of Andromeda called the Northeast shelf, finding conclusive evidence of an ancient collision. The findings provide insights into how material from collisions shapes a galaxy's appearance and makeup.
Researchers found that the asteroid is similar to 'Ivuna-type carbonaceous chondrites,' which date back to the solar system's beginnings. The samples show signs of having been soaked in water, but the rock itself appears relatively dry, hinting at similar formation conditions between comets and asteroids.
Long-term measurements at Mount Heng in southern China found acidic and more soluble ions in freezing rain, leading to decreased ambient temperatures. This process prolongs the existence of freezing rain, amplifying its effects in northern China as global warming shifts its influencing area
Researchers at University of Delaware have found that humans can detect subtle changes in chemical composition of surfaces, which could improve tactile technologies and virtual reality experiences. This discovery has potential applications in developing higher-quality tactile aids for people with visual impairments.
A team of scientists has created a detailed prediction of an Earth-sized planet in the α Centauri A/B system. The model suggests the planet, dubbed 'α-Cen-Earth', would have a mantle dominated by silicates and be geochemically similar to our Earth.
Researchers have found toxic and carcinogenic contaminants in untreated fracking wastewater samples, including organic chemicals and metallic elements. The study provides critical information for regulatory agencies to fine-tune guidelines on safe treatment and disposal of fracking wastewater.
A team of researchers from Skoltech and universities developed a neural network-based solution for automated recognition of chemical formulas on research paper scans. The algorithm combines molecules, functional groups, fonts, styles, and printing defects to mimic existing molecular template depiction styles.
A team of researchers has developed a new approach to discover the thousands of human-made 'forever' chemicals, PFAS, using advanced mass spectrometry. The technique enables them to characterize and catalog the chemical compounds in the PFAS family.
A study led by Florida Atlantic University reveals a vast amount of microplastics in the entire water column of an offshore plastic accumulation zone, with small microplastics being critical and underexplored. The findings highlight the importance of understanding the impact of these tiny plastics on marine ecosystems.
A recent review highlights the potential of structural proteomics in understanding pathological processes and predicting drug candidates for neurodegenerative diseases. The field combines protein chemistry and mass spectrometry to determine protein structure and interactions, which can lead to breakthroughs in treating serious health c...
A new method combines computational ghost imaging and x-ray fluorescence to create high-resolution chemical element maps. This approach eliminates lenses, reducing scanning time and improving spatial resolution, making it useful for biomedicine, materials science, art analysis, and industrial inspection.
A new study by Rice University astrophysicist André Izidoro suggests that the sun had rings before planets formed, explaining many solar system features. The model simulates the solar system's formation hundreds of times and reproduces several features missed by previous models, including pressure bumps and rings.
Researchers at Aarhus University have developed a new camera technology that can separate plastics based on their chemical composition. The technology uses hyperspectral cameras and machine learning to identify 12 types of plastics, including PE, PP, PET, and others, making it possible for more accurate recycling.