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) of active compounds 37 and 43 in AMR were unable to be detectable in ESI ‒ mode, while the EICs of the two compounds were extracted perfectly in ESI + mode ( Fig. S1 ). Therefore, a quantitative analysis of nine compounds was detected in

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]. Although the analysis of three components have been reported [ 6c , 10 ], a more rapid, simple, and precise quantitative analysis of these drugs is very important for clinical medication safety. High-performance liquid chromatography coupled with

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a Catalysis of the reaction of dye carbocation (R + ) with OH − in presence of cationic surfactant CTAB. b Counterion effect on CTAB catalyzed reaction Quantitative analysis of the

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–MS/MS method for quantitative analysis of curcumin in human plasma, which will be able to provide a variety of options for researchers. Experimental Chemical and reagents Curcumin (USP Reference standard) was

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validation of quantitative analysis Methanol stock solutions containing the three analytes were prepared, and the chemical structures of three active components were showed in Fig. 2 . Different concentrations of the three analytes solution were analyzed

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Abstract

This study proposes a quantitative analysis of researcher mobility (i.e. transfer from one institution to another) and collaborative networks on the basis of author background data extracted from biographical notes in scientific articles to identify connections that are not revealed via simple co-authorship analysis. Using a top-ranked journal in the field of computer vision, we create a layered network that describes various aspects of author backgrounds, demonstrating a geographical distribution of institutions. We classify networks according to various dimensions including authors, institutions and countries. The results of the quantitative analysis indicate that mobility networks extend beyond the typical collaborative networks describing institutional and international relationships. We also discuss sectoral collaboration considering the mobility networks. Our findings indicate a limitation of collaborative analysis based on bibliometric data and the importance of tracing researcher mobility within potential networks to identify the true nature of scientific collaboration.

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P.D. Sethi , High Performance Thin Layer Chromatography, Quantitative Analysis of Pharmaceutical Formulations, CBS Publishers and Distributors, New Delhi, 2 nd edn., 1996, 56–63. ICH, Stability Testing of New

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Patrinia scabra Bunge has long been used in clinic as a traditional Chinese medicine for treating leukemia and cancer and regulating host immune response. Despite their wide use in China, no report on system analysis on their chemical constituents is available so far. The current study was designed to profile the fingerprint of ethyl acetate extract of it, and in addition, to characterize the major fingerprint peaks and determine their quantity. Therefore, a detailed gradient high-performance liquid chromatography was described to separate more than 30 compounds with satisfactory resolution in P. scabra Bunge. Based on the chromatograms of 10 batches samples, a typical high-performance liquid chromatographic (HPLC) fingerprint was established with 23 chromatographic peaks being assigned as common fingerprint peaks. Furthermore, a quadrupole time of flight mass spectrometry (Q-TOF/MS) was coupled for the characterization of major compound. As (+)-nortrachelogenin was the most predominant compound in P. scabra Bunge, the quantification on it was also carried out with the method being validated. As a result, (+)-nortrachelogenin was found to be from 1.33 to 2.21 mg g−1 in this plant material. This rapid and effective analytical method could be employed for quality assessment of P. scabra Bunge, as well as pharmaceutical products containing this herbal material.

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Abstract  

Measured values of the intensities of characteristic γ-rays emitted under the bombardment of protons on a thick target of phosphorus are tabulated. The intensity of each characteristic γ-ray is measured and used for quantitative analysis of phosphorus in any sample with a sensitivity of 50 to 1000 ppm.

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