نتایج جستجو برای: sensors

تعداد نتایج: 93863  

Journal: :iranian journal of pharmaceutical sciences 0
nahla sayed ismail nodcar

abstract the utility of carbon paste electrode for the determination of flavoxate hcl modified with flavoxate-tetraphenylborate (flx-tpb) and flavoxate-phosphotungestic acid (flx-pta) ion-pairs in batch mode is demonstrated. the electrodes revealed a nernstian response over a wide concentration ranges 1.39×10-5-1x10-2 mol l-1 and1×10-5-1x10-2 mol l-1 using flx-tpb and flx-pta, respectively. the...

Journal: :journal of computational applied mechanics 0
s. kamal jalali phd student, school of mechanical engineering, university of tehran, tehran, iran m. hassan naei university of tehranassociate professor, school of mechanical engineering, university of tehran, tehran, iran

the present paper investigates the potential application of graphene sheets with attached nanoparticles as resonant sensors by introducing a nonlocal shear deformation plate model. to take into account an elastic connection between the nanoplate and the attached nanoparticle, the nanoparticle is considered as a mass-spring system. then, a combination of pseudo-spectral and integral quadrature m...

A. Afshar, S.M. Miri Khombi,

Location and types of sensors may be integrated for simultaneous achievement of water security goals and other water utility objectives, such as regulatory monitoring requirements. Complying with the recent recommendations on dual benefits of sensors, this study addresses the optimal location of these types of sensors in a multipurpose approach. The study presents two mathematical models for ...

Journal: :journal of artificial intelligence in electrical engineering 0
davood mohammadi pirmorad department of engineering, ahar branch, islamic azad university, ahar, iran

the drought continuity and also restricting watery sources caused agriculture section forgetold flooding methods for optimum water exploitation and proceeding new irrigation systems.new generation of irrigation systems called intelligent systems is a new solution leading toexploiting water increase to higher than 80%. in order to measure sensors and to controlprocessors in designing and dismoun...

Journal: :international journal of environmental research 2014
m. gómez d. hidalgo

pollution control is based on correctly measuring pollutant concentrations but, at the moment,the principal european cities only monitor pollution levels by means of a few fixed stations co-located inselected points of the urban layout far from hotspots and/or by means of meteorological prediction models offuture pollution. few cities integrate the information from both sources. the implementat...

Journal: :journal of agricultural science and technology 2010
a. afzal s. f. mousavi m. khadem

water is one of the most vital constituents in plants. in this research, for an estimation of leaf moisture content, the variation of capacitance was employed. the variations were measured via designed and manufactured capacitive sensors. the objective of the research was to estimate leaf moisture content by measuring its capacitance for five agronomic crops. experiments for measuring leaf capa...

Journal: :SIAM J. Control and Optimization 2009
Silvia Ferrari Rafael Fierro Brent Perteet Chenghui Cai Kelli Baumgartner

A methodology is developed to deploy a mobile sensor network for the purpose of detecting and capturing mobile targets in the plane. The sensing-pursuit problem considered in this paper is analogous to the Marco Polo game, in which a pursuer Marco must capture multiple mobile targets that are sensed intermittently, and with very limited information. The competing objectives exhibited by this pr...

Journal: :iranian journal of oil and gas science and technology 0
hamidreza mousavi m.s. student, department of instrumentation & automation engineering, petroleum university of technology, ahwaz, iran. mehdi shahbazian petroleum university of technology nosrat moradi iranian offshore oil company

recently different approaches have been developed in the field of sensor fault diagnostics based on auto-associative neural network (aann). in this paper we present a novel algorithm called self reconstructing auto-associative neural network (s-aann) which is able to detect and isolate single faulty sensor via reconstruction. we have also extended the algorithm to be applicable in multiple faul...

Journal: :the modares journal of electrical engineering 2011
mohammad orvatinia reza afzalzadeh faramarz hossein babaei

double layer zno/sno2 thin film resistive gas sensors were fabricated by successive pvd of those oxides onto porcelain substrates. the metallic contacts were provided by electron beam evaporation of platinum onto substrates prior to deposition of the gas sensitive layers. deposits were thermally annealed at different temperatures. it was shown that the activation energy of electrical conduction...

Bahareh Dabirmanesh, Hossein Mahdavi, Khosro Khajeh, Marjan Heidari,

Nowadays sensors and especially biosensors play an important role in medical diagnosis and detection of food and environment contaminations. Biosensors’ facilities have been improved significantly by using technologies such as surface plasmon resonance, microfluidics, laser, and electrochemistry. These technologies are now available on chips in micro- and nano-scale and are capable of mea...

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