نتایج جستجو برای: pulse on time

تعداد نتایج: 9162616  

Ali Akbar Moghadamnia Atieh Zabihollahpoor, Ghasem Najafpour-Darzi Mostafa Rahimnejad,

Herein, gold nanoparticle had been successfully synthesized through a simple, inexpensive and clean electrochemical technique. Gold nanoparticles were directly deposited on the electrode surface using an electrochemical strategy. Then, the electrochemical deposition parameters (such as applied potential and deposition time) were optimized. 1.1 V and 250 s were applied as the optimal electrodepo...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده برق و الکترونیک 1390

there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...

A. Afrasiabifar , M. Zoladl , R. Rezaeikia , Sh. Najafi Doulatabad ,

Aims: The present study was conducted with the aim of determining the effect of passive movements on hemodynamic parameters, including systolic blood pressure, diastolic blood pressure, mean arterial pressure, pulse, and pulse pressure of patients under ventilation. Materials & Method: In this controlled clinical trial, 64 patients under ventilation in Kohgiluyeh and Boyer-Ahmad University of ...

A highly sensitive differential pulse polarographic (DPP) method has been developed for the determination of trace amounts of osmium, based on the catalytic effect of osmium (VIII) on the oxidation of pyrogallol red (PGR) by sodium bromate at pH 7.00 and 25.0 0.1 ? C. The reaction rate was monitored by measuring the differential pulse cathodic current of the oxidation product of PGR and broma...

Journal: :journal of the iranian chemical research 0
ali niazi department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran roya tajik department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran samira kamel foladi department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran

lead forms the complexes with xylenol orange in the basic solution. an adsorptivedifferential pulse stripping method for the determination of lead is proposed. the procedureinvolves an adsorptive accumulation of lead on a hanging mercury drop electrode (hmde) inthe presence of xylenol orange, followed by reduction of adsorbed lead by voltammetric scanusing differential pulse modulation. the opt...

Journal: :journal of the iranian chemical research 0
laleh hosseinzadeh department of chemistry, dezful branch, islamic azad university, dezful, iran hossein khani department of chemistry, islamic ilam university, branch of ilam, ilam, iran shahryar abbasi department of chemistry, islamic ilam university, branch of ilam, ilam, iran

in the present work, an adsorptive stripping voltammetric method using a hanging mercurydrop electrode (hmde) was described in order to determine the ultra trace of thiosemicarbazidein different real samples. the method is based on accumulation of thiosemicarbazide on mercuryelectrode. the potential was scanned to the negative direction and the differential pulse strippingvoltammograms were rec...

Ali Ashraf, Jafar Hoseinzadeh, Maryam Shakiba, Omid Mo'men, Roshanak Sanjabi, Zoheir Reihanian,

Background and Aim: Pain is an experience often caused by tissue damage and is proportional to the severity of the injury. The role of underlying factors in severity of the pain such as prehospital factors have been discussed in some investigations. The current study aimed to assess the effect of different parameters on pain severity in patients with trauma. Methods and Materials/Patients: The...

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