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A new method to measure oxygen concentration in air-saturated organic solvents and binary mixtures has been developed. The methodology relies on the ability of HPLC columns to retain the molecular oxygen contained in different types of solvents which are injected into the system at 298.15 K. The outlet of the HPLC is coupled with an optical oxygen sensor which continuously measures changes in oxygen partial pressure.
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Name: The Analyst
Microwave assisted Bi2Se3 nanoparticles were synthesized from five different solvents DMF, EG, EG+H2O, EDA+dil.HNO3 and N2H4+H2O+Ethanol. The influence of solvents on purity of the compound was analys...
In this contribution, the advanced aromatic polymers with excellent anti-atomic oxygen (AO) performance were designed and synthesized using molecular precursor strategy and copolymerization of polyhed...
The Pd(II)-catalyzed cyclizations of 2,2-difluorovinylated biaryls, following a Friedel-Crafts-type mechanism, provide a new route to pinpoint-fluorinated phenacenes. The single fluorine substituent s...
To improve the solubility and bioavailability of poorly-soluble active pharmaceutical ingredients (APIs), the transformation of crystalline APIs into the amorphous state has often been shown to be adv...
Preserving DNA hybridization in organic solvents could someday serve to significantly extend the applicability of DNA-based technologies. Here, we present a method that can be used to solubilize doubl...
Masimo Corporation has developed a new parameter for noninvasive monitoring by optical sensors, Oxygen Reserve index (ORI). ORI is believed to correlate with the partial pressure of arteri...
Many grafts placed for dialysis access fail which causes patients to undergo additional operations, decreases their quality of life, and increases health care costs. The purpose of this s...
The aim of this study is calibrate (adjust and tune) the CAS FORE-SIGHT Near-Infrared Spectroscopy (NIRS) monitor when used to measure the tissue oxygen saturation of internal organs (StO2...
The purpose of the study is to determine whether imaging techniques, such as magnetic resonance imaging (MRI), near infrared spectroscopy (NIRS), laser speckle contrast imaging (LSCI), and...
An adequate oxygenation and retinal perfusion is essential for the function of the inner retina. There is a wide range of autoregulation mechanisms to ensure a sufficient ocular blood and ...
An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
Homogeneous liquid preparations that contain one or more chemical substances dissolved, i.e., molecularly dispersed, in a suitable solvent or mixture of mutually miscible solvents. For reasons of their ingredients, method of preparation, or use, they do not fall into another group of products.
The method of measuring the dispersion of an optically active molecule to determine the relative magnitude of right- or left-handed components and sometimes structural features of the molecule.
A CHROMATOGRAPHY method using supercritical fluid, usually carbon dioxide under very high pressure (around 73 atmospheres or 1070 psi at room temperature) as the mobile phase. Other solvents are sometimes added as modifiers. This is used both for analytical (SFC) and extraction (SFE) purposes.
Products or parts of products used to detect, manipulate, or analyze light, such as LENSES, refractors, mirrors, filters, prisms, and OPTICAL FIBERS.
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Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...