نتایج جستجو برای: design of experiment1

تعداد نتایج: 21225601  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
afzal ahmad muhammad imran ahmad muhammad younas hayat khan mansoor ul hassan shah

alkaline hydrolysis of ethyl acetate is essentially an irreversible and second order reaction. industrial importance of the reaction product, sodium acetate, necessitate for process improvement in terms of maximum conversion and economical usage of raw materials. statistical design of experiments was utilized to enhance conversion in both batch and plug flow reactors.a full two level factorial ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...

Journal: :international journal of advanced design and manufacturing technology 0
ahmadreza fazeli ebrahim sharifi

in this project creep feed grinding process of gas turbine blade root is investigated with the aim of consistant and controlable production. inthispaper, effectiveness of creep feed grinding process prometers suchas wheel speed, workpiece speed, grind depth and dresser speed are investigated. this investigation include their interaction on thelob of gas torbine blade root, as amajor cause of a ...

2014
LUKE MIRATRIX JINZHU JIA BIN YU BRIAN GAWALT LAURENT EL GHAOUI LUKE BARNESMOORE

2013, Vol. 0, No. 00, 1–31 DOI: 10.1214/13-AOAS698 © Institute of Mathematical Statistics, 2013 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 CONCISE COMPARATIVE SUMMARIES (CCS) OF LARGE TEXT CORPORA WIT...

A. Rashidy-Pour, A.A. Sajadi, B. Bolouri, M. Jadidi, S.M. Firoozabadi, Y. Fathollahi,

Background: This study was planned to examine the effects of whole-body exposure to GSM-950 MHz electromagnetic fields (EMFs) on acquisition and consolidation of spatial memory in rats using a water maze task. Materials and Methods: In experiment 1, the animals were given two blocks of five trials per day for three consecutive days in a water maze task. The interval between blocks was 4h...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1388

چکیده به منظور بررسی اثر تنوع گیاهی و نوع منبع تغذیه ای بر تنوع و تراکم علفهای هرز و حشرات، کارایی مصرف نهاده ها ( نور، آب، عناصر غذایی) و عملکرد و خصوصیات کیفی چند گونه زراعی، آزمایشی به صورت کرتهای خردشده بر پایه طرح بلوکهای کامل تصادفی با سه تکرار در دو سال زراعی 1385-1384 و 1386-1385 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه فردوسی مشهد به اجرا درآمد. تیمارهای مورد بررسی دو منبع کود دامی و...

Journal: :iranian journal of radiation research 0
m. jadidi laboratory of learning and memory, department and physiology research center, semnan university of medical sciences, semnan, iran s.m. firoozabadi department of medical physics, school of medical sciences, tarbiat modares university, tehran, iran a. rashidy-pour laboratory of learning and memory, department and physiology research center, semnan university of medical sciences, semnan, iran b. bolouri department of medical physics, school of medicine, iran university of medical sciences, tehran, iran y. fathollahi department of physiology, school of medical sciences, tarbiat modares university, tehran, iran a.a. sajadi department of medical physics, school of medical sciences, tarbiat modares university, tehran, iran

background: this study was planned to examine the effects of whole-body exposure to gsm-950 mhz electromagnetic fields (emfs) on acquisition and consolidation of spatial memory in rats using a water maze task. materials and methods: in experiment 1, the animals were given two blocks of five trials per day for three consecutive days in a water maze task. the interval between blocks was 4h. befor...

2014
P. A. Kralchevsky K. D. Danov

Here, we review two recent theoretical models in the field of ionic surfactant micelles and discuss the comparison of their predictions with experimental data. The first approach is based on the analysis of the stepwise thinning (stratification) of liquid films formed from micellar solutions. From the experimental step wise dependence of the film thickness on time, it is possible to determine t...

Journal: :iranian journal of medical physics 0
mehdi bashiri assistant professor, industrial engineering dept., shahed university, tehran, iran elham dehghan m.sc. in industrial engineering, shahed university, tehran, iran farideh mottaghian b.sc. in physics, sharif university of technology, tehran, iran ahmad amjadi assistant professor, physics dept., sharif university of technology, tehran, iran

introduction: we investigated the characteristic of a suitable irradiation on skin's tensional strength using design of experiments (doe). the experiments in this research are designed in two phases and data envelopment analysis (dea) is used for performance measurement of each phase. material and methods: samples were provided from pleura as surface tissue made of collagen and elastin fib...

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