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991.
Journal of Analytical Chemistry - The preparation of Ag/AgCl inner electrode in the polymer layer (coated wire electrode) and glassy carbon electrodes for ketoprofen... 相似文献
992.
Journal of Solid State Electrochemistry - In this work, a detailed characterization of LixMn2O4 spinel oxides is shown to demonstrate the correlation between the anomalous thermoelectric properties... 相似文献
993.
Positivity - We consider a nonlinear nonparametric elliptic Dirichlet problem driven by the p-Laplacian and reaction containing a singular term and a $$(p-1)$$ -superlinear perturbation. Using... 相似文献
994.
995.
Mazur Łukasz Molin Sebastian Dąbek Jarosław Durczak Karol Pyzalski Michał Brylewski Tomasz 《Journal of Thermal Analysis and Calorimetry》2022,147(10):5649-5666
Journal of Thermal Analysis and Calorimetry - The Crofer 22 H ferritic steel substrate was coated with an Mn1.45Co1.45Cu0.1O4 spinel by means of electrophoresis. After high-temperature oxidation... 相似文献
996.
For type 2 diabetes treatment, combinations of drugs from the thiazolidinedione and sulfonylurea groups are now available in the same tablet or capsule. Therefore, a stability-indicating and validated HPLC method was developed for simultaneous determination of pioglitazone, rosiglitazone, and glipizide in combined dosage forms. The examined drugs were subjected to different conditions such as acid and base, temperature, and UV light, and degradation of pioglitazone and glipizide was observed under thermal and acidic stress. However, selectivity of the presented method for pioglitazone, rosiglitazone, and glipizide assay against their degradation products was confirmed. It was also demonstrated to be robust, resisting small deliberate changes in pH of the buffer, flow rate, and percentage of acetonitrile in the mobile phase. The presented method utilizes a LiChrospher RP18 column (125 x 4.0 mm), acetonitrile in phosphate buffer at pH 4.3 (40 + 60, v/v) as the mobile phase, and UV detection at 225 nm for pioglitazonel glipizide or 245 nm for rosiglitazone/glipizide. The method was validated with respect to linearity, precision, and accuracy. Finally, the elaborated procedure was applied for the QC of pioglitazone/glipizide and rosiglitazone/glipizide mixtures. 相似文献
997.
Qiu W Perman JA Wojtas Ł Eddaoudi M Zaworotko MJ 《Chemical communications (Cambridge, England)》2010,46(46):8734-8736
Solvothermal reaction of a partially flexible ligand, H(4)L, and Cu(NO(3))(2)·2.5H(2)O afforded two cross-linked Kagomé lattices of formula [Cu(2)(L)](n): an acs net sustained by novel trigonal prismatic supermolecular building blocks (SBBs) and the first example of a partially pillared Kagomé net. 相似文献
998.
Piotr Rytlewski RafaŁ Malinowski Krzysztof Moraczewski Marian Żenkiewicz 《Radiation Physics and Chemistry》2010,79(10):1052-1057
The aim of this article was to determine and compare the influence of trimethylopropane trimethacylate (TMPTA) and trially isocyanurate (TAIC) crosslinking agents on thermal and mechanical properties of electron beam irradiated polylactide (PLA). The blends were made of PLA mixed with 3 wt% of TMPTA (PLA/TMPTA), and PLA mixed with 3 wt% of TAIC (PLA/TAIC). Injection moulded samples were irradiated with the use of high energy (10 MeV) electron beam at various radiation doses to crosslinking PLA macromolecules. Thermal and mechanical properties were investigated by means of differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), tensile strength, and impact strength measurements. The samples were also characterized by Fourier transform infrared spectroscopy (FTIR). It was found that under the influence of electron irradiation PLA/TMPTA samples underwent degradation while PLA/TAIC samples became crosslinked. Tensile and impact strengths of PLA/TMPTA samples decreased with increasing radiation dose while an enhancement of these properties for PLA/TAIC samples was observed. 相似文献
999.
Guillermo Orts Gil Sylvain Prévost Magdalena Łosik Florian Hermes Helmut Schlaad Thomas Hellweg 《Colloid and polymer science》2009,287(11):1295-1304
The self-assembly of polystyrene-block-poly(l-lysine) (PS-PLLys·HCl) copolymers with different block lengths has been studied in toluene. The obtained spherical micelles exhibit size variations upon addition of acids or bases, as indicated by light and neutron scattering studies. It is shown that pyridine induces a shrinking of the polystyrene chains in the corona region of the micelles, decreasing the aggregate solvent interface. The addition of benzoic acid, on the other hand, leads to a swelling of the copolymer micelles proportional to the molar fraction of polypeptide. This behavior suggests a selective permeability of the PS-PLLys micelles and the possibility to encapsulate organic compounds in toluene depending on their chemical nature. 相似文献
1000.
Skalicka-Woźniak Krystyna Hajnos Michał Łukasz Głowniak Kazimierz 《平面色谱法杂志一现代薄层色谱法》2009,22(4):297-300
JPC – Journal of Planar Chromatography – Modern TLC - High-performance thin-layer chromatography with densitometric detection has been used for quantitative analysis of chlorogenic acid... 相似文献