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Bulunan: 5 Adet 0.000 sn
Fakültesi / Enstitütü : Mühendislik Fakültes ... ✕Konu Başlıkları : sensor ✕
Koleksiyon [1]
Araştırmacılar [2]
BM Sürdürülebilir Kalkınma [1]
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Yayımlanma Yılı [3]
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Erişime Açık

A novel carbohydrate antigen 125 electrochemical sensor based on sweet almond oil organo-hydrogels

Nahit AKTAŞ

Ovarian cancer is a gynecological disease causing many deaths among women around the world. Carbohydrate antigen 125 (CA-125) is a single biomarker known to be a tumor marker of ovarian cancer. CA-125 is widely used to monitor the treatment process, recurrences, and for the detection of ovarian cancer. Herein, organo-hydrogels were prepared in order to detect CA-125 sensitively in serum medium with electrochemical methods. Organo-hydrogels were obtained by the free radical polymerization reaction using agar and glycerol with varying proportions of sweet almond oil using methylene bisacrylamide ...Daha fazlası

Makale 2023 Mühendislik Fakültesi Materials Chemistry and Physics298 52 Görüntülenme
Erişime Açık

Novel gallium-based voltammetric sensor for sensitive detection of cysteine

Nahit AKTAŞ

Carbon nanotube-supported gallium (Ga/CNT) was synthesized and characterized with energy dispersive X-ray scanning electron microscopy, temperature-programmed reduction, temperature-programmed oxidation, and temperature-programmed desorption methods. Characterization results revealed successful preparation of Ga/ CNT. Electrochemical measurements were performed by cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. The Ga/CNT-based cysteine sensor had a linear response within the range of 0-200 mu M with current sensitivity of 0.0081 mu A/mu M (114 m ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Journal of Physics and Chemistry of Solids169 193 Görüntülenme
Erişime Açık

Novel Cacao oil-based organo-hydrogels to detect carcinoma antigen 125 in serum medium; synthesis, characterization, and electrochemical measurements

Nahit AKTAŞ

In present study, cacao oil-based organo-hydrogels (OHCOs) are synthesized to detect carcinoma antigen 125 (CA-125) in serum medium with electrochemical methods such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). OHCOs are prepared by the free radical polymerization reaction with agar, glycerol, and distinct ratios of cacao oil with glutaraldehyde (GA) crosslinker or methylene bisacrylamide (MBA) crosslinker. OHCOs are characterized via Fourier Transform Infrared Spec-troscopy (FT-IR), in different solvent environments and pH ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Materials Chemistry and Physics292 43 Görüntülenme
Erişime Açık

Novel 5-(2-phenylbenzo [b] thiophen-3-yl)furan-2-carbaldehyde based ovarian cancer carbohydrate antigen 125 electrochemical sensor

Hilal DEMİR KIVRAK

Herein, an electrochemical sensor based 5-(2-phenylbenzo [b] thiophen-3-yl)furan-2-carbaldehyde (PTFC) was developed for the detection of cancer antigen 125 (CA125). Measurements were obtained via cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV), and square wave voltammetry (SWV) techniques to investigate features of the electrochemical sensor such as concentration effect of CA125, incubation time, scan rate, limit of quantification (LOQ), limit of detection (LOD), and interference effect of structures found in serum. The sensor wa ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Materials Chemistry and Physics291 86 Görüntülenme
Erişime Açık

Novel CNT Supported Molybdenum Catalyst for Detection of L-Cysteine in Its Natural Environment

Nahit AKTAŞ

In this study, novel carbon nanotube-supported Mo (Mo/CNT) catalysts were prepared with the sodium borohydride reduction method for the detection of L-cysteine (L-Cys, L-C). Mo/CNT catalysts were characterized with scanning electron microscopy with elemental dispersion X-ray (EDX-SEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spectrometry (UV-vis), temperature-programmed reduction (TPR), temperature programmed oxidation (TPO), and temperature-programmed desorption (TPD) techniques. The results of these advanced surface characterization techniques revealed that the catalysts were pre ...Daha fazlası

Makale 2021 Mühendislik Fakültesi Catalysts11 ( 12 ) 98 Görüntülenme
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