Category: 6. Chemistry
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Development of innovative methodology for determination of 6-thioguanine in whole blood erythrocytes by HPLC–PDA-based technique for medical diagnostics purposes
The HPLC method was developed for the determination of 6-thioguanine (6-TG) in whole blood samples containing red blood cells (RBCs) using 5-bromouracil (5-BU) as internal standard (IS) was developed. A mobile phase consisting of ACN/buffer KH2PO4 (3/97, v/v) with 50 µl H3PO4 in isocratic flow was used. 6-TG was detected at wavelength 341 nm and 6-BU at…
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Biochemist unravels the secrets of a novel DNA enzyme linked to infertility and certain cancers
MCM 8/9 DNA structure. Credit: Baylor University Scientific research requires patience. The rewards are not always immediate, and the technology needed does not always exist. Michael A. Trakselis, Ph.D., professor and director of graduate affairs for the Department of Chemistry and Biochemistry at Baylor University, understands this. For 15 years, Trakselis has been interested in…
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Quantum computer unveils atomic dynamics of light-sensitive molecules
Experimental results from a quantum computer (left) that match well with theory (right) are the first quantum-based method to show a quantum effect in the way light absorbing molecules interact with incoming photons. Credit: Jacob Whitlow, Duke University Researchers at Duke University have implemented a quantum-based method to observe a quantum effect in the way…
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Researchers produce polymers from ballbot-type carbenes for the first time
General aspects of NHCs on surfaces. Credit: Nature Chemistry (2023). DOI: 10.1038/s41557-023-01310-1 N-heterocyclic carbenes (NHCs) are small, reactive ring molecules that bond well with metallic surfaces, and which over the past few years have attracted a great deal of interest in the field of the stable chemical modification of metallic surfaces. One property—discovered at the…
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Researchers reveal key restriction of bismuth vanadate photoanodes prepared via pyrolysis method
The poor water oxidation performance of BiVO4 photoanode prepared by metal–organic decomposition was first unraveled to mainly result from the phase impurity caused by the relatively easy vanadium volatilization. Consequently, a BiVO4 photoanode free of tetragonal phase and decorated with NiFeOx cocatalyst was fabricated to exhibit a benchmark photocurrent density. Credit: Angewandte Chemie International Edition…
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Examining photocatalytic carbon dioxide conversion and its application beyond Earth
With the discovery of the abundant reserve of CO2 and water on extraterrestrial sites, it has been proposed that photocatalytic CO2 conversion can also be implemented at extraterrestrial sites to build up the artificial carbon cycle for providing propellants and life supports for space missions. Credit: Chinese Journal of Catalysis Today, space missions mainly rely…
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Producing carboxylic acids using an environmentally friendly technique
Overview of known procedures and the subject of this work. a Conventional synthesis protocols for converting cycloaliphatics to ketones and dicarboxylic acids. b Known electrochemical procedures for oxo-functionalizing C(sp3)–H and C=C bonds to ketones and dicarboxylic acids. Mediators labeled in red and supporting electrolytes are labeled in blue. c Subject of this work: application of…
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Scientists use quantum device to slow down simulated chemical reaction 100 billion times
Lead authors Vanessa Olaya Agudelo and Dr Christophe Valahu in front of the quantum computer in the Sydney Nanoscience Hub used in the experiment. Credit: Stefanie Zingsheim/University of Sydney Scientists at the University of Sydney have, for the first time, used a quantum computer to engineer and directly observe a process critical in chemical reactions…
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Scientists Are on the Hunt for the Other 99 Percent
Scientists at the Department of Energy’s Pacific Northwest National Laboratory are developing new mass spectrometry techniques to identify the 99% of chemical compounds not yet characterized. Combining two high-resolution instruments, they aim to unlock potential cures for diseases, tackle climate change, and identify new chemical threats. New mass spectrometry technique holds the potential for exploring…
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Physical properties, engine performance, and exhaust emissions of waste fish oil biodiesel/bioethanol/diesel fuel blends
Fuels properties According to the GC analysis, the main fatty acid esters of WFO biodiesel are palmitic acid, and trans-9-Elaidic acid methyl ester. The presence of Myristic acid methyl ester in the WFO biodiesel is also confirmed. More details regarding the fatty acid profiles and the compositional analysis of the WFO biodiesel can be found…