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3. Effect of crystallinity on unimodal and bimodal cell structures, in a continuous production of HDPE microcellular foamed sheets using supercritical CO2 (ScCO2).

Author

Ghasemzadeh, Alireza and Famili, Navid

Subjects
FOAM, CELL anatomy, FOAMED materials, SUPERCRITICAL carbon dioxide, CRYSTALLINITY, TEMPERATURE control
Abstract

Crystallinity is a controlling parameter in the development of microcellular foam final structure. In this research, using a well‐controlled continuous microcellular foamed sheet production system, the effect of crystallinity on the final structure of the microcellular foam is studied. To produce microcellular foamed sheets, different levels of the supercritical carbon dioxide (ScCO2) is dissolved in the polymer at high pressure and the foamed material is stabilized using a four roll apparatus at different roll temperatures. Crystallization occur by delay, however this lag time can be controlled by controlling temperature gradient. The higher decrease in the roll temperature results in higher temperature gradient which increases the crystallization rate during the cell growth, causing bimodal cell structures which indicates secondary nucleation. Moreover, as the amount of gas increases, the cell formation time increases, hence, at even higher temperatures we observed the effect of secondary nucleation, resulting in the occurrence of bimodal cell structures. [ABSTRACT FROM AUTHOR]

Published
2024
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7. İran Türk edebiyatı antolojisi

Author

Ghasemzadeh, Alireza, Ece, Selami, and Türk Dili ve Edebiyatı Ana Bilim Dalı

Subjects
Stylistic, Karşılaştırmalı Edebiyat, Eastern Linguistics and Literature, Anthology, Poets, Türk Dili ve Edebiyatı, Comparative Literature, Persion literature, Poem, Turkish Language and Literature, Court poem, Doğu Dilleri ve Edebiyatı, Turkish literature
Abstract

Bu çalışma ana hatlarıyla iki bölümden oluşmaktadır. Birinci bölümde İran ve Türk Edebiyatına mensup şairler tanıtılmış, ikinci bölümde ise bu şairlerin eserleri üzerine inceleme yapılmıştır. Bir yönüyle antoloji niteliğinde olan bu çalışmanın gayesi İran ve Türk Edebiyatı arasındaki etkileşimi ortaya koymaktır. Bu sebeple bediî özellikler üzerinden geniş bir değerlendirme bölümüne yer verilmiş, her iki edebiyatın müstakil üslup özellikleri belirlenmeye çalışılmıştır. Çalışmada ayrıca edebî sanatlar, muadiller ve muhaffeflerden hareket edilerek bir inceleme ortaya koymak gayesiyle hareket edilmiştir.Anathtar Kelimeler: İran Edebiyatı-Türk Edebiyatı, mukayese, üslup This activity with the main lines is composed from two part. In the first part known Turkish and Iranian poets and in the second part reviewed the work of this poets and the direction is compared selected poems, description and goal of the Turkish and Iranian poets and effect and influence of them together. Thus it had been important imagery of the two sides (Iranian-Turkish). Each two literary activities have independently and whit special mode too unfold and be famous. In this work the shared and reviewed other literary industries, equivalents, abbreviations. Keyword: Iranian Literature, Turkish Literature, Comparison, Mode. 281

Published
2014

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