Articles tagged with Methyl Group
A Swiss-American team has developed a simple, inexpensive system to detect heavy metal pollutants like mercury in water and fish. The new method uses nanoparticles with tiny hairs that can trap toxic substances, enabling accurate measurements at unprecedentedly small concentrations.
University of Oregon chemists have identified a catalyst that dramatically reduces waste made in methyl methacrylate production, a process used for lightweight glass alternatives. The new catalyst overcomes fundamental chemical reasons why previous catalysts failed, enabling efficient conversion to methyl methacrylate.
A new version of methyl cellulose, SATISFIT-LTG, has been developed to combat hunger and reduce calorie intake. In clinical trials, it showed a 13% decrease in energy consumption and prolonged feelings of fullness.
JBEI researchers have engineered Escherichia coli bacteria to generate significant quantities of methyl ketone compounds from glucose, which yielded high cetane numbers comparable to gasoline. The findings add flexibility and options for the biofuels industry, with potential applications in producing advanced biofuels.
Researchers at the University of Missouri are studying the molecular structure of a controversial pesticide to determine if it can be made more efficient and safer. They found that the active ingredient, methyl iodide, can be slowed down in its release, reducing the need for large amounts of pesticide.
Scientists studied how fluids travel through nanoscale channels and found that methyl alcohol diffused much faster in one direction due to the shape of the pores. The discovery has far-reaching implications for novel microscopic materials, including nanotubes and drug delivery systems.
Scientists at Fox Chase Cancer Center have identified a novel approach to develop targeted cancer therapies by reversing silenced genes through demethylation. The study suggests that specific proteins, such as thymine DNA glycosylase, can actively remove methyl groups from DNA.
Researchers are examining a cropping system using molasses to stimulate microbial activity, which could replace the fumigant methyl bromide. The study also explores recently developed fumigants dimethyl disulfide and methyl iodide.
Researchers found that global levels of hydroxyl radical, a critical player in atmospheric chemistry, are stable and vary by only a few percent every year. This discovery improves confidence in projecting the future of Earth's atmosphere and reduces concerns about human-caused or natural changes.
Researchers find that methyl labels determine a bee's fate from food intake, influencing gene expression and potentially linked to human cancer. They identified 550 genes with differences between queens and workers, offering insights into epigenetic regulation.
A study by Dr. Klaus Hansen's group at BRIC, University of Copenhagen, reveals that external stressors can activate genes responsible for cellular development and function.
Mercury levels in the Mackenzie River delta have been dramatically increased, exceeding previous estimates by an entire year's worth of mercury. This is a significant concern for northern communities that rely heavily on Arctic fish species and Beluga whales as a food source.
Researchers at the University of Illinois identified a novel pathway controlling NF-kappa B activity, a key protein involved in inflammation. This finding could have important implications for treating diseases linked to chronic inflammation.
A new study identifies sulfuryl fluoride as a significant contributor to future greenhouse warming due to its long lifetime of 36 years. The gas is currently present in the atmosphere at very small quantities, but increasing emissions pose a risk.
Researchers at the National Center for Atmospheric Research discovered that plants in a forest produce significant amounts of methyl salicylate, a chemical form of aspirin, in response to stress. This finding has the potential to give farmers an early warning signal about crops that are failing.
A study by John Hollingsworth at Duke University Medical Center found that a maternal diet rich in methyl donors can increase the development and severity of asthma in mice offspring. The researchers discovered that genes modified by methylation due to methyl donor exposure were likely responsible for this increased risk.
Scientists evaluated eight chemical alternatives to methyl bromide, finding some controlled weeds as consistently as the banned pesticide but at lower yields. Environmental factors also affected results, highlighting the need for further research and management strategies.
Researchers have found high levels of methyl mercury in wastewater from dental clinics and offices, which can become a potent neurotoxin when exposed to sulfate-reducing bacteria. The study estimates that up to 11 pounds of methyl mercury could be entering the US public water supply each year.
Researchers have discovered that paired microbes use a sulfur compound to eliminate methane from the oceans, preventing it from reaching the atmosphere. This process is crucial for regulating global methane and carbon cycles.
Researchers uncover the elusive signal that triggers plantwide resistance, found to be methyl salicylate, an aspirin-like compound.
A University of California, Irvine study found children with type-1 diabetes exhale higher concentrations of methyl nitrates when hyperglycemic. The researchers developed a breath device that can warn diabetics of high blood sugar levels and the need for insulin.
A comprehensive study is underway to examine the impact of prenatal exposure to mercury from dental fillings on neurological development. The researchers will collect hair samples from children in the Seychelles who were exposed to methyl mercury through their mothers' seafood consumption and dental work.
CABI's work with the European Commission significantly reduced methyl bromide usage in the EU, from 5.7 million kg to 0.5 million kg, setting a precedent for global pesticide reduction.
A new study by Woods Hole Oceanographic Institution researchers has found significant amounts of dissolved mercury entering coastal waters through groundwater, contrary to previous assumptions. The discovery has implications for understanding the environmental impact of mercury pollution and its effects on marine ecosystems.
A new method, metabolic stress disinfection (MSDD), sucks the life out of bugs by subjecting them to alternating vacuum and carbon dioxide, effectively suffocating organisms. The technique could replace post-harvest pesticides and may complete phasing out ozone-depleting methyl bromide, reducing chemical costs and environmental impact.
A novel enzyme, JHDM1A, has been discovered to remove methyl groups from histones, a finding with diverse implications for understanding gene regulation and its role in diseases. The study suggests that many proteins containing a similar domain may also be involved in histone demethylation.
Scientists have developed a method to add larger chemical groups to DNA using enzymes that recognize specific sequences. This technique allows for the manipulation of DNA function and has potential applications in labeling biomolecules such as RNA and proteins.
Researchers have made a crucial breakthrough in understanding Rett Syndrome by identifying the specific genetic targets involved in the disease. The discovery of an A-T stretch required for MeCP2 binding provides a key clue to finding new target genes.
Researchers at Ohio State University have discovered a formaldehyde-based chemical in interstellar dust clouds, suggesting that organic molecules may play a more prominent role in star and planet formation. The findings could change ideas about how these molecules form in the universe.
Researchers made new discoveries about the Earth's magnetic field, Mars rover data, and post-earthquake ground movement. A thin layer in the Earth's magnetic field was observed, while a Martian rover's landing site may be coated with iron oxide, affecting water detection. GPS technology also revealed ground movement after an 8.0-magnit...
Researchers have extended atmospheric record of methyl bromide over 300 years by analyzing air bubbles in an ice core. The study shows that global atmospheric methyl bromide levels increased significantly during the industrial era.
A team of UC scientists discovered a gene that controls the production of methyl halides in terrestrial plants, contributing to ozone destruction. The HOL gene, found in Arabidopsis and other plants, is likely a common trait among all terrestrial plants.
The study finds that the decrease in atmospheric bromine is driven by a large decline in methyl bromide, which has more than offset increases from halons. Global industrial production of methyl bromide has declined due to restrictions on its use, contributing to a faster-than-expected recovery of stratospheric ozone.
Researchers have observed a steady decline in atmospheric mercury levels since the mid-1990s, with concentrations remaining relatively constant. The findings highlight the need for further research on the sources of mercury emissions, including both natural and manmade components.
DuPont researchers developed a new way to make methyl isocyanate on site, reducing hazardous material handling by thousands of pounds. The approach has changed the company's handling of many hazardous chemicals, enhancing its environmental safety.
Researchers are working to isolate the nicotine N-demethylase gene, which converts nicotine into nornicotine, a potent carcinogen. The goal is to reduce levels of harmful nitrosamines in Burley tobacco and explore alternate uses for the crop.
Dlott and colleagues used mid-infrared lasers to excite hydroxyl stretching vibrations in alcohols, then probed with visible light to monitor energy flow. The study found that energy transfer occurs through bond interactions, increasing speed by about 400 femtoseconds for each methylene group.
Methyl bromide fumigation is a better option than current treatments for killing anthrax, according to UF researchers. The method could have saved $23 million in cleanup costs compared to estimated methods.
Researchers will study the health impact of chemicals in fish on refugees' children, as well as educate communities about safe fishing practices. The center aims to address the effects of combined PCB-methyl mercury exposure.
A UC Irvine study found that rice paddies emit significant amounts of methyl halide gases, contributing to stratospheric ozone depletion. The study suggests that agricultural sources play a role in this atmospheric phenomenon, and highlights the importance of understanding natural sources of ozone-depleting gases.
A Purdue University chemist has developed a method that uses high-energy ultraviolet rays to remove the gasoline additive MTBE from contaminated ground water. The technique involves exposing tainted water to UV rays, oxygen, and titanium dioxide, which eventually turns the compound into carbon dioxide.
Researchers analyzed polar snowpack and found major ozone-depleting gases were not present in the atmosphere in the late 19th and early 20th centuries. Human emissions can account entirely for their presence in the atmosphere.
Plant pathologists are developing new management practices for disease control, including the use of ecologically-based strategies and biological control organisms. The phase-out of methyl bromide is expected to have a significant impact on American agriculture, prompting research into alternative pest control tools.