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A group of researchers have succeeded in converting methane to methanol using a light, dispersed transition metal such as copper in a process known as photooxidation. According to an article reporting on research published in Chemical Communications, the reaction is the best obtained to date for the conversion of methane gas to liquid fuel under ambient temperature and pressure conditions (25 °C and 1 bar, respectively). The term bar as a unit of pressure comes from the Greek word for weight (baros). One bar is equivalent to 100,000 Pascals (100 kPa), which is very close to the standard atmospheric pressure at sea level (101,325 Pa). The results of this study are an important step in making natural gas available as an energy source for the production of alternative fuels other than gasoline and diesel. Although natural gas is considered a fossil fuel, its conversion to methanol produces less carbon dioxide (CO2) than other liquid fuels in the same category. In Brazil, methanol plays

Fluoroquinolone antibiotic residues are environmental contaminants. As these chemicals are not easily biodegradable, the development of rapid and cost-effective methods for their detection is a growing concern in the forensic industry. In a study published in Chemical analysis , Researchers have designed a microfluidic photoelectrochemical aptasensor (PEC) using photoactive AgBr/CuBi 2 HI 4 (ACO) composites for rapid and ultrasensitive detection of environmental contaminants . Study: AgBr/CuBi2O4 Photocathode Direct Z Schematic for Ultrasensitive Detection of Ciprofloxacin and Ofloxacin by Controlling Luminol Release in a Self-Powered Microfluidic Photoelectrochemical Aptasensor. Image Credit: Sonis Photography/Shutterstock.com Fluoroquinolone antibiotics, such as ofloxacin (OFL) and ciprofloxacin (CIP), pollute the environment by suppressing the activity and growth of microorganisms. This study explores a novel approach to detect ofloxacin and ciprofloxacin by controlling the r

WASHINGTON — Researchers have developed a new method to flexibly create a variety of needle-shaped laser beams. This long, narrow beam can be used to enhance optical coherence tomography (OCT), a non-invasive and versatile imaging tool used for scientific research and various types of clinical diagnosis. “Needle-shaped laser beams can effectively expand the depth of focus of OCT systems, improving lateral resolution, signal-to-noise ratio, contrast, and image quality over a long depth range,” said study team leader Adam de la Zerda of the Stanford University School of Medicine. . “However, before now, the application of certain needle-shaped beams was difficult due to the lack of a common and flexible generation method.” In Optica, the Optica Publishing Group’s journal for high-impact research, researchers describe their new platform for creating needle-shaped beams of different lengths and diameters. It can be used to create different types of beams such as one with a very long dep

Nano-sized extracellular vesicle (EV) exosomes serve as a reliable source of biomarkers. However, identification of cancer biomarkers through mapping of exosomal multi-omic molecular information is challenging due to the heterogeneous population of exosomes derived from diverse cell types. Study: Nano pom-pom prepared exosomes allow detection of highly specific cancer biomarkers. Image Credit: Meletios Verras/Shutterstock.com In an article published in the journal Communication Biology , the researchers introduced new three-dimensional (3D) nanographene immunomagnetic particles for specific capture and release (defined by markers) from intact exosomes. The newly designed 3D structured nanographene particles have a unique pom-pom flower morphology. In addition, the capture and release of intact exosomes is carried out via photo-click chemistry. This exosome isolation approach allows the identification of cancer biomarkers with enhanced sensitivity and specificity. Multi-omic exosom