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Silan based paraoxon memories onto QCM electrodes
Ebru Birlik Ozkutuk,Sibel Emir Diltemiz,Elif Ozalp,Arzu Ersoz,Rıdvan Say 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.6
In this study, a novel quartz crystal microbalance (QCM) based on the modification of paraoxon-imprinted polymer onto a QCM with a high selectivity and sensitivity has been developed for the determination of paraoxon. The QCM sensor has characterized using AFM and ellipsometer. The performance of the QCM sensor has evaluated and presented good reproducibility, shorter response time (20 min), wider linear range (0.02–10 mM) and low detection limit (0.02 mM). The results have shown that the selectivity of QCM sensor has found as being very high in the presence of parathion which is similar in structure with paraoxon.
Double-imprinted potentiometric sensors based on ligand exchange for the determination of dimethoate
Eyüp Bektaşoğlu,Ebru Birlik Özkütük,Arzu Ersöz,Rıdvan Say 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.8
This paper describes a dimethoate imprinted polymeric potentiometric sensor for the determination of dimethoate that was designed by dispersing the dimethoate-imprinted polymer in dibutyl phthalate plasticizer and then embedded in polyvinyl chloride matrix. The method is based on molecularly imprinted polymer (MIP), which can be synthesized by using dimethoate as a template molecule, chitosan-Cd(II), and 3-mercaptopropyl-trimethoxysilane as a functional monomer and TEOS, and ephychlorohydrin as a cross-linking agent. We have studied a method for the selective binding behavior of dimethoate compounds on the surface of imprinted polymers which is prepared using ligand-exchange (LE) (chitosan-Cd(II)) monomer. The MIP-LE-1 and MIP-LE-2 based membranes have shown a detection limit of 4.3×10−6mmolL−1 and 3.5.10−5 mmolL−1, respectively. The sensor has exhibited a response time of 35min for MIP-LE-1 and 120min for MIP-LE-2. They are stable for more than three months.
A Case of Adult-Onset Still’s Disease Complicated with Diffuse Alveolar Hemorrhage
Ismail Sari,Omer Binicier,Erkan Yilmaz,Merih Birlik,Servet Akar,Fatos Onen,Nurullah Akkoc 대한의학회 2009 Journal of Korean medical science Vol.24 No.1
Adult-onset Still’s disease (AOSD) is an inflammatory disease that presents with a variety of clinical symptoms. Pulmonary involvement is well-known in AOSD and is seen in up to 53% of AOSD cases, with the most common pulmonary diseases being pleural effusion and transient pulmonary infiltrates. We present the first case of chronic AOSD complicated with diffuse alveolar hemorrhage during the acute flare of the disease.