CN
Search Within
aluminum oxide tlc plates
应用筛选条件
关键词:'aluminum oxide tlc plates'
显示 1-23 共 23 条结果 关于 "aluminum oxide tlc plates" 范围 论文
Nariman A El-Ragehy et al.
Journal of chromatographic science, 52(6), 559-565 (2013-06-05)
In this work, two chromatographic methods have been developed and validated for the determination of sertindole (an antipsychotic agent) in the presence of its oxidative degradation product. Sertindole was subjected to stress stability studies, including acid, alkali, oxidative, photolytic and
Sy-Chyi Cheng et al.
Analytical chemistry, 81(22), 9274-9281 (2009-11-17)
The combination of laser-induced acoustic desorption and electrospray ionization mass spectrometry (LIAD/ESI/MS) can be used to rapidly characterize chemical compounds separated on a thin layer chromatography (TLC) plate. We performed LIAD analysis by irradiating the rear side of an aluminum-based
G Szabó et al.
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 48(4), 354-361 (1990-04-01)
In a 4-year period, 40 compact aluminum oxide ceramic implants fixed with titanium plates and screws were used: 24 for the correction of mandibular defects, 9 for temporomandibular joint replacement, and 7 for augmentation of facial contour. During the 1
Michel Y Fares et al.
Journal of chromatographic science, 55(9), 961-968 (2017-10-20)
Two accurate, precise and highly selective stability-indicating methods were adopted for simultaneous determination of benztropine mesylate (BNZ) in presence of its hepatotoxic and carcinogenic degradation product, benzophenone (BPH) either in pure form or in the pharmaceutical formulation without any preliminary
B Simonovska
Journal of AOAC International, 80(3), 688-692 (1997-05-01)
Milligram quantities of sulfoxides, sulfones, and oxygen analogue (oxon) sulfones of the insecticides disulfoton, phorate, and terbufos were prepared by selective oxidation. Pure insecticides or acetone extracts of granular formulations served as reactants. Structures of 9 compounds were confirmed by
S H Li et al.
Steroids, 63(2), 76-79 (1998-03-28)
Oxidation of cholesterol (1a) or pregnenolone (1b) with pyridinium dichromate (PDC) in dimethylformamide (DMF) or in dichloromethane (DCM) and pyridinium chlorochromate (PCC) in DCM provided cholest-4-en-3,6-dione (2a) or pregn-4-en-3,6,20-trione (2b). TLC monitoration of the reactions implied that cholest-5-en-3-one (3a) or
Alaa Khedr et al.
Journal of chromatographic science, 41(1), 10-16 (2003-02-25)
A validated stability-indicating thin-layer chromatographic (TLC) method of the analysis of azithromycin (AZT) in bulk and capsule forms is developed. Both AZT potential impurity and degradation products can be selectively and accurately estimated in both raw material and product onto
Tzu-Yi Chan et al.
Nanoscale research letters, 12(1), 344-344 (2017-05-13)
This paper describes the preparation of nanoarrays composed of silver nanoparticles (AgNPs: 20-50 nm) for use as surface-enhanced Raman scattering (SERS) substrates. The AgNPs were grown on porous anodic aluminum oxide (AAO) templates by electrochemical plating, and the inter-channel gap of
Lukáš Krásný et al.
Journal of mass spectrometry : JMS, 47(10), 1294-1302 (2012-09-29)
We report substantial in-situ enrichment of phosphopeptides in peptide mixtures using titanium and zirconium dioxide-coated matrix assisted laser desorption-ionization (MALDI) plates prepared by recently reported ambient ion landing deposition technique. The technique was able to modify four common materials currently
Piotr Garnuszek et al.
Nuclear medicine review. Central & Eastern Europe, 15(2), 95-100 (2012-09-01)
The reliable method for determination of identity and radiochemical purity (RCP) is of great importance in radiopharmaceutical development. This is especially relevant when more than one form of radiometal/ligand complex can be formed during radiolabelling, such as complexes of 99mTc
Tatiana P Vello et al.
Scientific reports, 7, 43432-43432 (2017-02-28)
Ethanol is a biofuel used worldwide. However, the presence of excessive water either during the distillation process or by fraudulent adulteration is a major concern in the use of ethanol fuel. High water levels may cause engine malfunction, in addition
Seo-Young An et al.
Imaging science in dentistry, 48(2), 97-101 (2018-07-03)
This study evaluated the radiopacity of contemporary luting cements using conventional and digital radiography. Disc specimens (N=24, n=6 per group, ø7 mm×1 mm) were prepared using 4 resin-based luting cements (Duolink, Multilink N, Panavia F 2.0, and U-cem). The specimens
Yong-Hoon Kim et al.
Journal of nanoscience and nanotechnology, 13(11), 7779-7782 (2013-11-20)
In this paper, the effects of annealing conditions on the dielectric properties of solution-processed aluminum oxide (Al2O3) layers for indium-zinc-tin-oxide (IZTO) thin-film transistors (TFTs) have been investigated. The dielectric properties of Al2O3 layers such as leakage current density and dielectric
Mélanie Pailleux et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(3), 1049-1056 (2013-02-14)
Biomolecules can be adsorbed on nanoparticles (NPs) and degraded during in vitro toxicity assays. These artifactual phenomena could lead to misinterpretation of biological activity, such as false-negative results. To avoid possible underestimation of cytokine release after contact between NP and
C Giachetti et al.
European journal of drug metabolism and pharmacokinetics, 21(3), 261-268 (1996-07-01)
N-(2-hydroxyethyl)-pyrrolidine (HEP, Epolamine) is a strong base used to salify organic acids of pharmaceutical interest in order to improve their solubility in water. Diclofenac-HEP (Flector) is the first example of an epolamine salt of a drug. In this study, [14C]-HEP
Sameh Ahmed et al.
Journal of chromatographic science, 55(8), 818-831 (2017-05-10)
A comparative force degradation high performance thin layer chromatography (HPTLC) method was developed and validated for some H2-receptor antagonists. The studied H2-receptor antagonists were ranitidine (RAN), nizatidine (NIZ) and famotidine (FAM). The degradation behaviors of the studied H2-receptor antagonists were
Apexa Patel et al.
Journal of chromatographic science, 52(10), 1294-1301 (2013-12-04)
A sensitive, selective, precise and stability indicating a high-performance thin layer chromatographic method for the analysis of rufinamide (Rf) in bulk drug and its formulations was developed and validated. The method employed thin layer chromatography aluminum plates precoated with silica
Jaehwan Ahn et al.
Journal of nanoscience and nanotechnology, 13(11), 7482-7486 (2013-11-20)
Electrochemical measurements using the microelectrodes are increasingly utilized for the label-free detection of the small amount of biological materials such as DNA, protein, and cells. However, the interfacial electrode impedance increases and may hinder the detection of weak signals as
Karson S Putt et al.
Analytical biochemistry, 333(2), 256-264 (2004-09-29)
The enzyme poly(ADP-ribose) glycohydrolase (PARG) catalyzes the hydrolysis of glycosidic bonds of ADP-ribose polymers, producing monomeric ADP-ribose units. Thus, in conjunction with poly(ADP-ribose) polymerase (PARP), PARG activity regulates the extent of in vivo poly(ADP-ribosyl)ation. Small molecule inhibitors of PARP and
Menghua Yang et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(6), 2348-2353 (2013-01-24)
To be successful pathogens, bacteria must often restrict the expression of virulence genes to host environments. This requires a physical or chemical marker of the host environment as well as a cognate bacterial system for sensing the presence of a
He Zhao et al.
Journal of hazardous materials, 297, 269-277 (2015-05-16)
We in this study investigated a novel electrochemical approach combining electro-enzyme and electrocoagulation to precipitate bisphenol A (BPA) from water containing humic acid (HA). Horseradish peroxidase was immobilized on the graphite felt of Ti electrode as HRP-GF/Ti cathode, with aluminum
Bo-Ah Lee et al.
The Journal of prosthetic dentistry, 109(2), 95-105 (2013-02-12)
Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this alloy and porcelain. The purpose of this study was to
William C Culp et al.
Anesthesia and analgesia, 118(4), 772-775 (2014-03-22)
Operating room fires are sentinel events that present a real danger to surgical patients and occur at least as frequently as wrong-sided surgery. For fire to occur, the 3 points of the fire triad must be present: an oxidizer, an
1/1