نتایج جستجو برای: electrochemical sensing

تعداد نتایج: 174274  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی و پایه 1390

the present study aimed at investigating the relationship between iranian efl teachers’ classroom management orientations and their teaching styles. additionally, the difference between male and female teachers’ teaching styles and classroom management orientations and their relationship with experience and age were explored. three hundred efl teachers filled in attitudes and beliefs on classro...

2008
Dorothee Grieshaber Robert MacKenzie Janos Vörös Erik Reimhult

Quantification of biological or biochemical processes are of utmost importance for medical, biological and biotechnological applications. However, converting the biological information to an easily processed electronic signal is challenging due to the complexity of connecting an electronic device directly to a biological environment. Electrochemical biosensors provide an attractive means to ana...

Journal: :ChemElectroChem 2022

Abstract The electrochemical reduction of four organic explosive compounds, 1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocane (HMX), 1,3,5‐trinitro‐1,3,5‐triazinane (RDX), pentaerythritol tetranitrate (PETN) and 2,4,6‐trinitrophenylmethylnitramine (tetryl), is studied in eight room temperature ionic liquids (RTILs). In all RTILs, the peaks were highly complicated, but much better resolved than previous st...

2017
Alain Walcarius

The past decade has seen an increasing number of extensive studies devoted to the exploitation of ordered mesoporous carbon (OMC) materials in electrochemistry, notably in the fields of energy and sensing. The present review summarizes the recent achievements made in field of electroanalysis using electrodes modified with such nanomaterials. On the basis of comprehensive tables, the interest in...

Faridbod, Farnoush, Khorramizadeh, Mohammad Reza, Khoshnevisan, Kamyar, Larijani, Bagher, Sajjadi-Jazi, Sayed Mahmoud,

Background: A novel nanocomposite-modified electrode based on reduced graphene oxide (rGO) decorated with crown-ether and gold nanoparticles (GNPs) on the surface of a glassy carbon electrode (GCE) was fabricated to investigate 5-HT determination. Methods: The morphology of nanocomposite was characterized by scaning electron microscopy (SEM). Diabetic zebrafish was obtained by overfeeding via ...

Journal: :Journal of Materials Science: Materials in Electronics 2023

Abstract Electrochemical alongside the electro-catalytic properties of graphene and multi-walled carbon nanotubes have been improved via doping with manganese oxide nanostructures. Structural, morphological, electrochemical as-synthesized nanocomposites were identified using XRD, FTIR, SEM, methods including cyclic voltammetry, impedance spectroscopy. The SEM images showed flower-like microsphe...

Journal: :The Analyst 2013
Jeong-Il Heo Yeongjin Lim Heungjoo Shin

Redox cycling is a commonly used electrochemical sensing scheme for enhancing faradaic current signals. This effect can be improved by either optimizing electrode geometries or restricting electrochemical reactions within a limited volume. Here, we demonstrate a simple batch fabrication of 1 : 1 aspect ratio carbon interdigitated array nanoelectrodes integrated in a polydimethylsiloxane microch...

Journal: :Nanoscale 2013
Tingting Zheng Tingting Tan Qingfeng Zhang Jia-Ju Fu Jia-Jun Wu Kui Zhang Jun-Jie Zhu Hui Wang

We have developed a robust, nanobiotechnology-based electrochemical cytosensing approach with high sensitivity, selectivity, and reproducibility toward the simultaneous multiplex detection and classification of both acute myeloid leukemia and acute lymphocytic leukemia cells. The construction of the electrochemical cytosensor involves the hierarchical assembly of dual aptamer-functionalized, mu...

2010
Michal Wasowicz Malgorzata Milner Dorota Radecka Krystyna Grzelak Hanna Radecka

Immunosensors based on gold electrodes (electrochemical) or gold discs (optical) modified with 1,6-hexanedithiol, gold nanorods and Anti-His (C-term) monoclonal antibody F(ab') fragment are described. The antigen detected by the sensing platform is a recombinant histidine-tagged silk proteinase inhibitor (rSPI2-His(6)). Electrochemical impedance spectroscopy (EIS) and surface plasmon resonance ...

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