نتایج جستجو برای: enzyme sensor

تعداد نتایج: 428080  

احمدخان کردبچه, امیرحسین, قناعت شعار, مجید, محمدحسینی, حکیمه,

In this paper surface plasmon resonance sensor is studied by using gold and silver in its structure respectively, also the possibility of extraordinary high spectral sensitivity by using multimode sensing scheme is being investigated in this sensor. It is shown that due to the extraordinary high spectral sensitivity of surface plasmon resonance sensor measuring adsorbate layer thickness could b...

Journal: :journal of physical & theoretical chemistry 2008
n. farahani h. aghaie

fe2+ ion-selective membrane sensor has been fabricated from polyvinyl chloride (pvc) matrixmembrane containing neutral carrier tetra phenyl porphyrin (tpp) ionophore. the addition ofsodium tetraphenylborate (natpb) and the plasticizer dbp has been found to substantiallyimprove the performance of the sensor. the best performance was obtained with the sensor havinga membrane of composition of tpp...

In this paper, we intend to focus on the sensor network applications in firefighting. A distributed algorithm is developed for the sensor network to guide firefighters through a burning area. The sensor network models the danger of the area under coverage as obstacles, and has the property to adapt itself against possible changes. The protocol developed, will integrate the artificial potential ...

In this paper, homogeneous, wavelength shift biosensor is designed for sensing the protein concentration using two dimensional Photonic Crystal Ring Resonator (PCRR). The sensor is designed to monitor the protein concentration from 0% to 100%. The proposed sensor is composed of periodic Si rods embedded in an air host with a circular PCRR that is placed between the inline quasi waveguides. It i...

ژورنال: تحقیقات موتور 2019
Hoseini, S. V., Talebi, A.,

Engine oil is one of most important parameters in internal combustion engine that plays effective role in component wear. One of the ways to optimize the performance of the IC engines is online monitoring of wear particle in engine oil. There are different ways to identifying these particles, most of which are offline. Nowadays online oil monitoring sensors are quickly developed. In this study ...

This paper proposes an efficient network architecture to improve energy consumption in Wireless Sensor Networks (WSN). The proposed architecture uses a mobile data collector to a partitioned network. The mobile data collector moves to center of each logical partition after each decision period. The mobile data collector must declare its new location by packet broadcasting to all sensor node...

This paper proposes an efficient network architecture to improve energy consumption in Wireless Sensor Networks (WSN). The proposed architecture uses a mobile data collector to a partitioned network. The mobile data collector moves to center of each logical partition after each decision period. The mobile data collector must declare its new location by packet broadcasting to all sensor node...

In this paper excitation characteristics of the Liquid Crystal (LC) capacitive chemical and biological sensor are examined and the optimum frequency and voltage range for the sensor interface are introduced. Interdigitated capacitor has been used for the sensor capacitance measurement and two different molecular orientations, homeotropic and homogenous, have been considered. The LC sensor capac...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2007
Petra A Neff Andreas Serr Bernhard K Wunderlich Andreas R Bausch

A silicon-on-insulator (SOI) based thin film resistor is employed for the label-free determination of enzymatic activity. We demonstrate that enzymes, which cleave biological polyelectrolyte substrates, can be detected by the sensor. As an application, we consider the serine endopeptidase trypsin, which cleaves poly-L-lysine (PLL). We show that PLL adsorbs quasi-irreversibly to the sensor and i...

Journal: :Biosensors & bioelectronics 2004
Su-Hua Huang Yu-Chuan Shih Chung-Yu Wu Chiun-Jye Yuan Yuh-Shyong Yang Yaw-Kuen Li Tung-Kung Wu

An optical polymeric biochip system based on the complementary metal oxide semiconductor (CMOS) photo array sensor and polymeric enzyme biochip for rapidly quantitating uric acid in a one-step procedure was developed. The CMOS sensor was designed with N(+)/P-well structure and manufactured using a standard 0.5 microm CMOS process. The polymeric enzyme biochip was immobilized with uricase-peroxi...

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