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Direct Frequency Comb Cavity Ring-Down Spectroscopy Using Vernier Filtering.
J Phys Chem A
January 2025
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States.
We present direct frequency comb cavity ring-down spectroscopy with Vernier filtering as a straightforward approach to sensitive and multiplexed trace gas detection. The high finesse cavity acts both to extend the interaction length with the sample and as a spectral filter, alleviating the need for dispersive elements or an interferometer. In this demonstration, a free running interband cascade laser was used to generate a comb centered at 3.
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PLoS One
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Department of General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
Background: Glyphosate, as the main component of glyphosate pesticides, has been shown to have toxic effects on multiple human systems. However, the association between glyphosate and atherosclerotic cardiovascular disease (ASCVD) remains unclear. This study aims to explore the effect of glyphosate exposure on ASCVD.
View Article and Find Full Text PDFDetection and analysis of Serpin and RP26 specific antibodies for monitoring Schistosoma haematobium transmission.
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Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Background: Schistosoma haematobium is the causative pathogen for urogenital schistosomiasis. To achieve progress towards schistosomiasis elimination, there is a critical need for developing highly sensitive and specific tools to monitor transmission in near-elimination settings. Although antibody detection is a promising approach, it is usually unable to discriminate active infections from past ones.
View Article and Find Full Text PDFAn analytical model of label-free nanoscale chemical imaging reveals avenues toward improved spatial resolution and sensitivity.
Proc Natl Acad Sci U S A
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Faculty of Technical Chemistry, Institute of Chemical Technologies and Analytics, Technische Universität Wien, Vienna 1060, Austria.
Atomic force microscopy-infrared spectroscopy (AFM-IR) is a photothermal scanning probe technique that combines nanoscale spatial resolution with the chemical analysis capability of mid-infrared spectroscopy. Using this hybrid technique, chemical identification down to the single molecule level has been demonstrated. However, the mechanism at the heart of AFM-IR, the transduction of local photothermal heating to cantilever deflection, is still not fully understood.
View Article and Find Full Text PDFBiogenic Synthesis and Characterization of Silver Nanoparticles With Cyanobacterium Oscillatoria salina Using Against MDR Pathogenic Bacteria and Their Antiproliferative and Toxicity Study.
Cell Biochem Funct
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Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, India.
The biosynthesis of silver nanoparticles (AgNPs) using cyanobacteria has gained significant attention due to its cost-effective and eco-friendly advantages in green synthesis. Additionally, biogenic AgNPs show great potential for biological applications, particularly in combating infections caused by drug-resistant bacteria and fungi. This study synthesized using the cyanobacterium Oscillatoria salina (Os-AgNPs).
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