17 Result(s)
within
**ng-Juan Yu
Chemistry
English
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Article
Effect of heavy-do** Eu3+ and charge compensation on crystalline phase and luminescence properties of K2CaP2O7 phosphors emitting orange-red light
A series of K2Ca1-xP2O7:xEu3+ phosphors were prepared by a high-temperature solid-state reaction method. The crystal structure was analyzed by X-ray diffraction (XRD). Fluorescence spectra, decay curves, and colo...
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Article
Open AccessMetabolic engineering of Escherichia coli for direct production of vitamin C from D-glucose
Production of vitamin C has been traditionally based on the Reichstein process and the two-step process. However, the two processes share a common disadvantage: vitamin C cannot be directly synthesized from D-...
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Article
Ice Crystal Growth Mechanism and Structure-activity Relationships of Graphene Oxide/Poly(vinyl alcohol) Aerogels
Aerogels are special porous materials with low thermal conductivity, light weight, high energy absorption rate and large surface area, which have been applied in many fields. However, controlling the aerogel m...
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Article
Flame-retardant and Self-healing Biomass Aerogels Based on Electrostatic Assembly
It remains a significant challenge to fabricate self-healing aerogels with excellent flame retardancy. Herein, we develop a class of biomass aerogels by electrostatically assembling chitosan (CS), phytic acid ...
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Article
Near-infrared electrochromism of multilayer films of a cyclometalated diruthenium complex prepared by layer-by-layer deposition on metal oxide substrates
A cyclometalated diruthenium complex 2 bridged by 1,2,4,5-tetra(pyrid-2-yl)benzene with six carboxylic acid groups at two ends was synthesized. Monolayer and multilayer films FTO/TiO2/(2)n(Zr) (n=1,2) and FTO/SnO
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Article
Effect of PEDOT:PSS content on structure and properties of PEDOT:PSS/poly(vinyl alcohol) composite fiber
In this study, effect of PEDOT:PSS content on structure and properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/poly(vinyl alcohol) (PVA) composite conducting fiber was systematic...
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Article
Structures and Photoluminescence of Two Coordination Polymers Based on 2-Hydroxypyrimidine-4,6-dicarboxylic Acid
Two IIB group metal complexes based on 2-hydroxypyrimidine-4,6-dicarboxylic acid (H3L), formulated as {[Zn3L2(H2O)4]·2H2O} n (1) and {[Cd3L2(H2O)6]·H2O}
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Article
New BPTH-Bridged Chained Cd(II) Coordination Polymer Based on Cd2O2 Clusters: Synthesis and Crystal Structure of [Cd(BPTH)(phen)]·3.75H2O (BPTH = biphthalhydrazidate; phen = phenanthroline)
Based on the hydrothermal in situ acylation reaction of 4,4′-biphthalic acid (bpha) with N2H4·H2O, a new acylhydrazidate-bridged 1-D chained Cd2+ coordination polymer [Cd(BPTH)(phen)]·3.75H2O (BPTH = 4,4′-biphtha...
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Article
Effects of Ultrasound on a Glycin–Glucose Model System—A Means of Promoting Maillard Reaction
Effects of ultrasound on pH, intermediate products, browning, glycin and glucose contents, reducing power, and antioxidant activity of a glycin–glucose solution were examined. Results showed that the ultrasoni...
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Article
Studying the uptake of aniline vapor by active alumina through in-line monitoring a differential adsorption bed with near-infrared diffuse reflectance spectroscopy
Through non-invasive monitoring the uptake of aniline vapor by active alumina in a differential adsorption bed (DAB) with near-infrared diffuse reflectance spectroscopy (NIR-DRS), we have studied several featu...
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Article
Determination of Psoralen in Human Plasma Using Excitation-Emission Matrix Fluorescence Coupled to Second-order Calibration
A new algorithm, an alternating normalization-weighted error (ANWE) method, and the parallel factor analysis (PARAFAC) have been used to directly determine psoralen (PSO) in human plasma. The two methods fully...
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Article
LC Determination and Pharmacokinetics Study of Mangiferin in Rat Plasma and Tissues
An LC method was developed for determination of mangiferin in rat plasma and tissues after oral administration of Rhizoma Anemarrhenae extract. Analysis was performed on a Gemini C18 analytical column (250 × 4.6 ...
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Article
Simultaneous LC Determination of Spinosin, Danshensu, and Protocatechuic Aldehyde in Traditional Chinese Zaoren-An-Shen Capsules
A simple, sensitive, and accurate liquid-chromatographic method with UV detection has been developed for simultaneous determination of spinosin, danshensu, and protocatechuic aldehyde in traditional Chinese Za...
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Article
Synthesis of mangiferin derivatives as protein tyrosine phosphatase 1B inhibitors
Protein tyrosine phosphatase 1B (PTP1B) has received much attention due to its pivotal role in type 2 diabetes and obesity as a negative regulator of the insulin signaling pathway. Mangiferin, a xanthone gluco...
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Article
Fluorescence determination of metoprolol in human plasma by trilinear decomposition-based calibration techniques
In this study a new spectrofluorimetric method for the direct determination of metoprolol in human plasma is presented and discussed. It is based on the use of fluorescence excitation–emission matrices (EEMs) ...
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Article
A stable glucose biosensor prepared by co-immobilizing glucose oxidase into poly(p-chlorophenol) at a platinum electrode
An amperometric glucose biosensor was successfully developed by electrochemical polymerization of p-chlorophenol (4-CP) at a Pt electrode in the presence of glucose oxidase. The amperometric response of this bio...
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Article
PMBP-loaded polyurethane foam as an extractant for thorium nitrate from aqueous solution
A study on extraction of thorium with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (PMBP)-loaded polyurethane foam is described. Open-cell polyurethane foam has proved to be effective as supporting material for PM...
