Articles tagged with Chemical Analysis
Researchers have developed a saliva collection system using lollipops that can capture bacteria from adults and remain shelf-stable for up to a year. Participants preferred the lollipop-based method over conventional collection systems, finding it less gag-inducing and more sanitary.
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.
A new study using mass spectrometry analyzed hand scent compounds from 60 individuals and achieved a 96.67% accuracy rate in predicting sex. The analysis can be used to uncover details about a potential perpetrator, such as age and racial or ethnic group, when other evidence is lacking.
A new computer simulation suggests that domestic cats' noses function similarly to parallel coiled gas chromatographs, enabling efficient odor detection. This finding deepens understanding of how the evolution of convoluted channels enabled mammals' enhanced sense of smell.
Recent studies in the New Journal of Pharmaceutical Analysis feature novel diagnostic tools, RNA sequencing-based workflows, and mechanical property evaluations to enhance cancer and cardiovascular disease treatment outcomes. These innovations aim to improve the therapeutic effect of drugs and promote personalized medicine.
Researchers at Leibniz Institute for Food Systems Biology identify two key odorants: sotolon from Maggi seasoning and (2 E ,4 E ,6 Z )-nona-2,4,6-trienal from oatmeal. Maintaining a one-to-one ratio is crucial to reproduce the characteristic walnut aroma.
A team of researchers from China and the UK has developed new ways to optimise the production of solar fuels by creating novel photocatalysts. These photocatalysts, such as titanium dioxide with boron nitride, can absorb more wavelengths of light and produce more hydrogen compared to traditional methods.
Scientists investigate how salt uptake affects polyester microdroplets' surface potential, turbidity, size, and internal water distribution. The results suggest that microdroplets can selectively partition salt cations, leading to differential coalescence.
Scientists at TU Wien use microscopy techniques to observe chemical reactions on catalysts, revealing a wealth of detail that challenges previous understanding. The study shows that even simple catalytic systems are more complex than expected, with different scenarios prevailing on the micrometer scale.
A new analysis of secret industry documents reveals that the chemical industry knew about the dangers of PFAS but failed to disclose this information to the public and regulators. The study examines how the industry used tactics to delay public awareness and regulations, with devastating consequences for human health and the environment.
Researchers at the University of Córdoba have identified the composition of a Roman perfume over 2,000 years old, with patchouli being the primary scent. The perfume was found in a vessel made of quartz and sealed with dolomite and bitumen, allowing for its preservation.
Researchers have developed new methods to analyze dry-coated drug particles using 3D Raman mapping, which can effectively slow down dissolution rates. Another study introduces a novel technique for detecting complex traditional Chinese medicines, preventing adulteration and counterfeiting.
Researchers at the University of California, Davis analyzed 36 private label avocado oil products and found that only 31% were pure, while 36% met advertised quality standards. The study identified key chemical markers to help buyers choose authentic products.
A new study finds that popular compostable plastics like PLA don't biodegrade in marine environments, instead persisting unchanged. The research highlights the need for standardizing tests to see if materials promoted as compostable or biodegradable actually break down in natural environments.
A new study has defined analytical performance specifications for 24,25-dihydroxyvitamin D examinations, which is essential for developing accurate methods to detect this metabolite. The findings show that the variation of 24,25(OH)2D concentration over time was significantly associated with 25(OH)D concentrations and body mass index.
A new study using thermoluminescence dating has challenged the prevailing theory about the early inhabitants of the US Virgin Islands. The research team found that multiple cultures coexisted on the islands simultaneously, contradicting the widely accepted theory of three major waves of immigration.
The University of Texas at El Paso has received multiple grants from NASA to support its space research efforts. Researchers will examine planetary bedrock and prepare astronauts for the Artemis lunar mission. The grants aim to provide valuable insights into constructing infrastructure on other planets and identify lunar resources.
A Washington State University-led study found that adding too much water to whisky (about 20%) can change its smell and taste, making them indistinguishable from each other. The researchers also discovered that different types of whiskies respond differently to dilution.
A comprehensive study found that wild boar liver can be used as a bioindicator for PFAS contamination in the environment, detecting hot-spots in regions with elevated PFAS levels. The researchers discovered that PFAS concentrations are highest in areas where industrial activities and agricultural practices have led to contamination.
MIT researchers developed a miniature vacuum pump for portable mass spectrometers, overcoming design limitations of traditional pumps. The 3D-printed pump can create and maintain lower pressure vacuums, increasing the device's lifetime and enabling its use in remote locations and space exploration.
Researchers discuss rapamycin's potential to delay cancer onset by slowing cell proliferation and tumor progression. The mTOR pathway is involved in both cancer and aging, making rapamycin a promising chemopreventive agent.
Researchers at Chalmers University of Technology developed a new recycling method for solar cells that uses acidic solutions to separate precious metals. The process recovers up to 100% of the silver and 85% of the indium, making it more environmentally friendly and cost-effective than traditional methods.
A study in Auckland, New Zealand has detected methamphetamine and other substances in the air for the first time in Oceania. The largest concentration of methamphetamine was found to be 104 picograms per cubic meter, highlighting the need for better air quality monitoring.
Researchers develop innovative method to analyze ancient bones, making collagen quantifiable and mapping possible. This technique supports the selection of samples for radiocarbon analysis, preserving valuable material and reducing destruction.
A new pesticide exposure test has been developed to help protect the health and safety of agricultural workers, particularly those in the emerging cannabis industry. The test uses a bio solid-phase microextraction method that can detect ultra-trace levels of pesticide residues in human blood plasma.
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 analysed wastewater from 10 cities to detect chemical and biological markers of health, including pesticides, pharmaceuticals and disease-causing viruses. The study found that analysing wastewater on a large scale could spot new outbreaks of diseases in communities early on.
Scientists at the University of Missouri have developed a novel method to detect food adulteration using nuclear magnetic resonance (NMR) spectroscopy. The technique can identify vegetable oil adulterants in hard cheese products with high accuracy, leading to improved consumer safety and product authenticity.
The new Radiocarbon 3.0 method provides valuable new insights into the earliest human history, starting with the interaction between Homo Sapiens and Neanderthals in Europe. This is achieved through updated radiocarbon pretreatment, latest AMS instrumental advances, and the application of the Bayesian model coupled with the new IntCal20.
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 developed high-throughput Raman microscope for rapid large-area imaging hundreds of times faster than traditional approach. The new technique enables label-free molecular analysis and multiplex chemical imaging, holding promise for efficient medical diagnoses and drug development.
Researchers analyzed chemical residues in ancient vessels to identify specific embalming ingredients, including unexpected global sources like tropical Africa and Southeast Asia. The findings shed new light on the global trade relationships involved in ancient Egyptian mummification.
Researchers found solid scientific evidence that Vikings transported animals, including a horse and dog, across the North Sea to Britain. The analysis of human and animal remains from the Heath Wood cremation cemetery revealed that these animals originated from Scandinavia.
Researchers have discovered a way to produce limonoids, a family of valuable chemicals with potential as bee-friendly insecticides and anti-cancer drugs. By identifying the enzymes required for production, they can now use host organisms to create these compounds in a more sustainable way.
Researchers have developed a new spectroscopy technique called filament- and plasma-grating-induced breakdown spectroscopy (F-GIBS), which improves the sensitivity of trace metal detection in liquid samples. The technique uses fluid jets to analyze aqueous solutions and achieves high precision by avoiding detrimental influences of liqu...
A new microresonator technology is being developed to analyze chemicals using light, enabling faster diagnosis of diseases like COVID and diabetes. The device can retain light waves for longer periods, amplifying optical fields and making nonlinear processes easier.
A nationwide retrospective study showed that adjuvant chemotherapy after neo-adjuvant chemotherapy and surgery significantly improved overall survival in patients with pancreatic adenocarcinoma, regardless of lymph node status or resection margins. The study included nearly 900 patients and was published in JAMA Oncology.
A new law restricts 1,4-dioxane levels in household cleaners and cosmetics, a potential human carcinogen common in everyday products. Experts recommend robust analytical methods for detection and quantification to meet regulatory requirements.
Researchers at Argonne National Laboratory have identified promising new biofuels that can reduce greenhouse gas emissions by up to 60% while improving fuel efficiency or reducing tailpipe emissions. The biofuels, developed using advanced engine design, can be blended with conventional fuels to improve engine performance and meet more ...
A Tel Aviv University study reveals that the Israeli shoreline is contaminated with more than two million tons of microplastics, with Tel Aviv and Hadera beaches being the most polluted. The researchers warn that exposure to microplastic waste is unavoidable and poses a risk to human health.
A new study in Cell Systems explores the benefits of using multiple data types in drug discovery. Gene expression and cell morphology provide complementary information for drug prioritization, advancing drug discovery, functional genomics, and precision medicine.
A UCLA team has made strides toward developing a handheld tool similar to an alcohol Breathalyzer that can detect THC on a person's breath after they've smoked marijuana. The device uses oxidation to create an electric current, with the strength of the current indicating how much psychoactive compound is present.
A study by Colorado State University found that indoor air contains more known human toxins than outdoor air, particularly when cooking or cleaning. The research, called HOMEChem, identified compounds like benzene, formaldehyde, and acrolein as potential health risks.
A recent study published in Environmental Science and Technology Letters found high levels of PFAS in school uniforms sold in North America, with 65% of samples tested containing fluorine. The concentrations were highest in cotton uniforms, which may be treated with toxic chemicals.
A recent study led by Veronika Somoza found that egg powder is a valuable source of essential nutrients, including vitamins and indispensable amino acids. The researchers discovered that the drying process did not lead to contamination with heavy metals and that egg powder can provide up to 61% of a child's daily requirement for selenium.
A computational model predicts semiconductor material properties, enabling researchers to identify and create materials useful in quantum applications. The method could speed the process of identifying and creating materials with desirable properties.
Scientists at the University of Freiburg have successfully characterized epigenetic modifications using nanopore analysis. The technique allows for rapid detection of protein fragments with varying levels of acetylation, enabling more accurate diagnosis and treatment of diseases like cancer.
The Perseverance rover has collected the first Martian rock samples that could be returned to Earth, shedding light on whether Mars ever hosted life. The rock samples come from the Jezero crater floor, where scientists believe a watery past may have supported life.
The Perseverance rover collected igneous cumulate rocks from four sites on the floor of Jezero Crater, providing evidence of aqueous alteration. These rocks will help scientists determine when Mars' climate was conducive to lakes and rivers, addressing major questions about the planet's history.
Researchers discover 20 compounds behind vanilla's flavor complexity, including previously unknown ones, and find that certain compounds impact consumer acceptability. The new profile could help producers identify high-quality extracts and improve curing methods.
Researchers analyzed almost 100 inks and found that even when ingredient lists are provided, they often contain inaccuracies. The team also detected small particles that could be harmful to cells, with some particles as small as 100 nm.
Researchers have discovered that particles from everyday wall paints can harm living organisms due to their small size. A novel membrane developed at the University of Bayreuth shows high filtering effects, removing these particles from water before they enter the environment.
Researchers have developed new methods to prepare state-of-the-art zeolites with nano-sized dimensions and hierarchical structures, critical for industrial applications. The findings emphasize the importance of smaller size and structure in determining performance.
The workshop will discuss recent advances, perspectives, and applications of medical cannabis and cannabinoids. Researchers will explore their chemistry, pharmacology, analysis, influence on mitochondria, and potential use as anticancer agents.
A new Oregon State University study found significant differences in hop aroma profiles between Oregon and Washington-grown hops, affecting beer flavor. The research suggests that regional identity, similar to terroir in wine, can be attributed to specific growing environments.
Researchers at KAUST have found that molybdenum plays a central role in electrochemical hydride transfer, a process for producing valuable chemicals or carbon-free fuels. The discovery could enable more sustainable production of sustainable fuels and chemicals.
The Polyphenols Applications 2022 World Congress will focus on the latest findings and emerging trends in polyphenol research, covering various topics such as microbiota, adipose tissue, nervous system, senolytic activity, ageing, endothelial function, radioprotection, atherosclerosis, and more. Over 300 international participants will...
Researchers analyzed 19,000-year-old mosaic tesserae from a Turkish villa and found that six were likely made of recycled glass using inductively coupled plasma mass spectrometry. The study reveals the artistic possibilities and fashion trends in late antiquity.
Researchers from Indiana University are developing a new biosensor that can analyze samples from 96 individuals in under three hours, with a sensitivity rate of 100% and specificity rate of 90%. The sensor detects not only the virus's spike protein but also the proteins created by the body to protect against the virus.
A multidisciplinary study of Roman period wine jars reveals the use of native grapes for wine production and foreign pine for waterproofing tar pitch. The analysis provides insight into the cultural practices of ancient winemakers in coastal Italy.