نتایج جستجو برای: ziegler

تعداد نتایج: 1571  

Asghar Mohammadi Ayat Rohina, Ayob Baharani fard Kazem Abadi Nader Kazemi

Several empirical methods for flood flow rate estimation have been presented. In this study,eight new empirical runoff estimation method including Dredge & Burge, Bourges, Inglis, Faning, Hyderabad, Burkli Ziegler, Cramar and Possenti were calculated in Bakhtegan watershed which is located in Fars province. After studying empirical methods for annual flood flow rate estimation and comparing the...

2013
F. Haugen

A novel experimental method – here denoted the Good Gain method – for tuning PI controllers is proposed. The method can be regarded as an alternative to the famous Ziegler-Nichols’ Ultimate Gain method. The approach taken resembles the Ziegler-Nichols’ method as it is based on experiments with the closed loop system with proportional control. However, the method does not require severe process ...

Journal: :Language and speech 2010
Ellen Simon Mieke Van Herreweghe

Between phonological forms and their orthographic representations a close connection can be established. Previous psycholinguistic research has amply illustrated that word recognition can be influenced by orthography (Perre & Ziegler, 2008; Taft, 2001) and that orthography plays a role in phonemic awareness (Cheung, Chen, Lai, Wong, & Hills, 2001; Tyler & Burnham, 2006). However, despite the lo...

Journal: :Herpetozoa 2022

We report the first country record of Theloderma khoii Ninh, Nguyen, Hoang, Siliyavong, Le, Le & Ziegler, 2022 from China based on a specimen collected Wenshan Prefecture, southeastern Yunnan, China. Morphologically, Prefecture agrees well with type specimens T. Vietnam except for having smaller body size, and phylogenetically clustered Vietnam. In addition, we confirm distribution Rhacopho...

2017
Kim Seng Chia

Received July 19, 2017 Revised Oct 20, 2017 Accepted Nov 7, 2017 Line tracking robots have been widely implemented in various applications. Among various control strategies, a proportional-integral-derivative (PID) algorithm has been widely proposed to optimize the performance of a line tracking robot. However, the motivation of using a PID controller, instead of a proportional (P) or a proport...

ژورنال: :فصلنامه علمی- ترویجی بسپارش 2015
رضا بازوند نعیمه بحری مهدی نکومنش حسین عابدینی

فعالیت کاتالیزور از مهم ترین پارامترها در فرایندهای پلیمرشدن است. برای یک سامانه کاتالیزوریفعالیت ممکن است به شرایط پلیمرشدن از قبیل دما و فشار وابسته باشد. با این حال، برای شرایط ثابتپلیمرشدن، افزایش فعالیت به روش تغییر دما و فشار رضایت بخش نیست و صنعتگران مجبورند تا مقدارکاتالیزور در راکتور یا زمان انجام پلیمرشدن را افزایش دهند که این کار نیز از لحاظ اقتصادی مقرونبه صرفه نیست. در سال های اخیر...

Journal: :علوم و تکنولوژی پلیمر 0
غلامرضا پیرچراغی سعید پورمهدیان مهدی وطن خواه

the effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of ziegler-natta catalyst, cyclohexylmethyl dimethoxysilane as external electron donor, and triethyl aluminum as co-catalyst. prepolymerizations were carried out based on two strategies: is...

Journal: :The Journal of the Society of Chemical Industry, Japan 1967

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