نتایج جستجو برای: ftir analysis
تعداد نتایج: 2836971 فیلتر نتایج به سال:
Background: The increasing number of techniques introduced to describe organisms and taxa produce multivariate datasets, often composed of relatively independent descriptors. Handling several descriptors can be laborious and often unnecessary when their information is not congruent to that of other datasets used in the same study. On the other hand, different levels of correlation between singl...
Diffuse malignant mesothelioma (DMM) is a heterogeneous malignant neoplasia manifesting with three subtypes: epithelioid, sarcomatoid and biphasic. DMM exhibit a high degree of spatial heterogeneity that complicates a thorough understanding of the underlying different molecular processes in each subtype. We present a novel approach to spatially resolve the heterogeneity of a tumour in a label-f...
The ASTM Acid Number (AN) and Base Number (BN) analyses provide two of the most fundamental condition monitoring measures associated with lubricant quality, providing status information on oil oxidation and/or reserve alkalinity, respectively. Although a crucial measure, the various ASTM titrimetric methods are expensive and problematic to carry out as well as being difficult to compare and int...
Solanum lyratum is a medicinal plant used to treat cancers and tumors. The objective of this study was to apply Fourier transform infrared microspectroscopy (FTIR) and thermogravimetric analysis (TGA) to quick identification of S. lyratum fourteen samples from its main geographic origins in China. The hierarchical dendrogram based on principal component analysis (PCA) of FTIR and TGA data showe...
This paper presents the experimental evaluation results of using computed tomography coupled with OP-FTIR (CT-FTIR) measurement to estimate personal exposures. Experimental data were collected inside a ventilation chamber with a remote controlled robot as a surrogate for a real human. While the robot moved inside the chamber, a tracer gas (carbon monoxide) was released from a line source. A per...
BACKGROUND The diagnosis of canine atopic dermatitis (CAD) remains challenging due to the lack of a simple biomarker or metabolic profile. In human medicine, Fourier transform infrared spectroscopy (FTIR) is an analytical technique used for several diseases. It requires a small amount of sample and allows the identification of structural moieties of biomolecules on the basis of their infrared a...
Oxidation of fats and oils is an important indicator for performance and shelf life of oils. As other vegetable oils, virgin coconut oil (VCO) is not susceptible to lipid oxidation. Thus, a rapid method for quantitative analysis of peroxide value in VCO was developed in this study using Fourier transform infrared (FTIR) spectroscopy coupled with attenuated total reflectance (ATR). Thirty traini...
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