Results 91 to 100 of about 2,087,234 (343)
Brazilian Journal of Medical and Biological Research, 1999 The aim of this work was to compare the performance of isotope-selective non-dispersive infrared spectrometry (IRIS) for the 13C-urea breath test with the combination of the 14C-urea breath test (14C-UBT), urease test and histologic examination for the ...
Coelho L.G.V. +10 more
doaj
INFRARED SPECTROMETRY OPTIONS WITH ATR METHOD FOR OXIDATION EVALUATION OF OILS
Transactions of the VŠB: Technical University of Ostrava, Safety Engineering Series, 2018 Theme Article deals with the use of infrared spectrometry (ATR method) to analyze oxidation, because oxidation plays a role in the self-ignition of oils. As samples were used – sunflower oil, linseed oil.
Jan POLEDNÍK
doaj +1 more source
Research on gas chromatographic systems to analyze certain chemical constituents of the surface of the moon Progress report, 1 Jan. - 30 Jun. 1967 [PDF]
Gas and liquid chromatographic systems for separating and identifying organic compounds - pyrolysis, mass spectrometry, and infrared analytical ...
core +1 more source
Noninvasive ¹³C-octanoic acid breath test shows delayed gastric emptying in patients with amyotrophic lateral sclerosis [PDF]
, 1999 Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by progressive loss of motor neurons. However, ALS has been recognized to also involve non-motor systems.
Folwaczny, Christian +6 more
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Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
Surpassing the Path-Limited Resolution of a Fourier Transform Spectrometer with Frequency Combs
, 2015 Fourier transform spectroscopy based on incoherent light sources is a well-established tool in research fields from molecular spectroscopy and atmospheric monitoring to material science and biophysics.
Fermann, Martin E. +10 more
core +3 more sources
Estimating the level of carbamoylated plasma non-high-density lipoproteins using infrared spectroscopy [PDF]
, 2019 Background: The increased cardiovascular morbidity and mortality observed in chronic kidney disease (CKD) patients can be partly explained by the presence of carbamoylated lipoproteins. Lipid profiles can be determined with infrared spectroscopy. In this
De Baene, Linde +5 more
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Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions
Advanced Functional Materials, EarlyView.DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng +7 more
wiley +1 more source
Comparison of the determination of a low-concentration active ingredient in pharmaceutical tablets by backscatter and transmission raman spectrometry [PDF]
, 2012 A total of 383 tablets of a pharmaceutical product were analyzed by backscatter and transmission Raman spectrometry to determine the concentration of an active pharmaceutical ingredient (API), chlorpheniramine maleate, at the 2% m/m (4 mg) level.
Andrews, John +5 more
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Advanced Functional Materials, EarlyView.This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies +8 more
wiley +1 more source