نتایج جستجو برای: electrochemical noise en

تعداد نتایج: 779119  

2017
Yu Ya Cuiwen Jiang Tao Li Jie Liao Yegeng Fan Yuning Wei Feiyan Yan Liping Xie

Zinc oxide nanoflower (ZnONF) was synthesized by a simple process and was used to construct a highly sensitive electrochemical sensor for the detection of sunset yellow (SY). Due to the large surface area and high accumulation efficiency of ZnONF, the ZnONF-modified carbon paste electrode (ZnONF/CPE) showed a strong enhancement effect on the electrochemical oxidation of SY. The electrochemical ...

Journal: :Journal of analytical toxicology 2015
Nandkishor S Chindarkar Hyung-Doo Park Judith A Stone Robert L Fitzgerald

Currently, the use of time of flight (TOF)-mass spectrometry (MS) in quantitative analysis of small molecules is rare. Recently, the quantitative performance of TOF mass analyzers has improved due to the advancements in TOF technology. We evaluated a Q-TOF-MS in different modes, i.e., Q-TOF-full scan (Q-TOF-FS), Q-TOF-enhanced-full scan (Q-TOF-En-FS), MS(E), Q-TOF-targeted (Q-TOF-TGT), Q-TOF-en...

2015
Debangshu Das Ravi Gupta

Among all non-conventional micro-machining, electrochemical discharge machining (ECDM) is having high quality of material removal rate with zero residual stress. This machining has been accepted as a highly modern technology in micromachining. In this paper an effort has been done on micro drilling of glass using electrochemical discharge machining (ECDM). A fixed tool and a step down transform...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1390

la notion d’équivalence est un concept clé de la pratique et de la théorie de la traduction. cependant, l’équivalence reste toujours une notion confuse. en effet, peu de chercheurs en théorie de la traduction continuent de nos jours à rechercher les principes de l’équivalence au niveau des signes de deux langues comme le faisait déjà sain augustin au quatrième siècle et comme le faisait encore,...

2003
Zhiping Deng David C. Stone Michael Thompson

Eight conducting polymer films of polypyrrole and its derivatives were used as sensitive and selective coatings for thickness-shear mode (TSM) acoustic wave sensors. They were applied to the detection of volatile alcohols and carbonyl compounds, which are important fish freshness determinants. The conducting polymers were synthesized and coated on TSM devices by electrochemical oxidation. The e...

Journal: :Journal of neuroscience methods 2009
Hao Zhang Shih-Chieh Lin Miguel A L Nicolelis

Simultaneous acquisition of in vivo electrophysiological and neurochemical information is essential for understanding how endogenous neurochemicals modulate the dynamics of brain activity. However, up to now such a task has rarely been accomplished due to the major technical challenge of operating two independent recording systems simultaneously in real-time. Here we propose a simpler solution ...

Journal: :Corrosion and materials degradation 2023

This paper investigated carbon steel corrosion in an enclosed environment, where one set of was immersed 3.5 wt.% NaCl solution and another exposed to humid (condensation) conditions. The study employed electrochemical noise impedance spectroscopy techniques monitor real time behaviour. samples were evaluated with surface characterisation including optical light microscope, scanning electron mi...

2014
Ma Teresa Martínez Lidia Martínez Javier Hernández-Ferrer Miguel Luesma Castán Y. Sun S. Wang C. Li P. Luo L. Tao Y. Wei G. Shi

Graphene quantum dots, GQDs, have been synthesized using two strategies: electrochemical (E) and wet chemical (W) methods. A simple, industrially up-scalable, two-electrode electrochemical setup, starting from graphite and a one-pot wet chemical synthesis, modified from reference [1] were used to produce GQDs. Filtration, centrifugation, concentration and dialysis were used to purify the obtain...

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