Results 11 to 20 of about 109,768 (301)

The Effect of the Poly Vinyl Chloride (PVC) Addition on Surface Hardness and Impact Strength Properties of Heat-Cured Acrylic Resin Denture Base Material [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
:The most common materials used for fabrication of denture base are poly methyl methacrylate (PMMA) and methyl methacrylate (MMA). Preparation of heat cured, ultered or modified, denture base acrylic resin was carried out by preparing of poly (methyl ...
Ehsan Ali Abed
doaj   +1 more source

Preparation and characterization of MWCNT-COOH/PVC ultrafiltration membranes to use in water treatment [PDF]

open access: yesAdvances in Environmental Technology, 2018
Polyvinyl chloride (PVC) membranes containing pristine and modified multiwall carbon nanotube (MWCNT) were prepared and characterized. MWCNT was modified in order to achieve well-dispersion within the membranes. The results of FTIR analysis revealed that
Sepideh Masoumi Khosroshahi   +2 more
doaj   +1 more source

Early Miocene herpetofauna from the Ribesalbes-Alcora Basin (Castelló, eastern Spain): a first step towards modern herpetofaunas in the Iberian Peninsula [PDF]

open access: yesFossil Record
The Early Miocene is a key period in the evolution of modern reptile and amphibian faunas, particularly for snakes. However, there are very few studies focused on herpetofauna in Iberian sites of this chronology.
Rafael Marquina-Blasco   +3 more
doaj   +3 more sources

Debate as A Learning-Teaching Method: A Survey of Literature

open access: yesTarbiya : Journal of Education in Muslim Society, 2016
This present paper explored historical references of debate trend  to be proposed as one of learning-teaching method. By analyzing the strengths and limitations of debate, the author found that any existing debate format is imperfect and it is educators’
Arskal Salim
doaj   +1 more source

Young People’s Perspectives on and Experiences of Health-Related Social Media, Apps, and Wearable Health Devices

open access: yesSocial Sciences, 2018
It has been reported from numerous international and socio-economic contexts that young people are becoming increasingly interested in and/or using social media, apps, and wearable devices for their health. Yet, there are few robust empirical accounts on
Victoria A. Goodyear, Kathleen M. Armour
doaj   +1 more source

Characterization of Chemically Synthesized Polyaniline-Polyvinylchloride-Montmorillonite Nanocomposite [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2015
Polyaniline-montmorillonite (PANI-MMT) nanocomposite was synthesized by chemical polymerization of aniline in the presence of montmorillonite (MMT) nanostructures.
Arefeh Tabatabaei, Maryam Farbodi
doaj   +1 more source

Studies on Some Mechanical Properties of PVC-Wood Fiber Composite [PDF]

open access: yesChemical Review and Letters, 2021
In this study some mechanical properties of PVC-Wood fibre composite were investigated. The wood fibre was gotten from a mahogany tree. The sample was moulded and shaped at a temperature of 150oC using a hadraulic hot press and pressure of 3bar for 5mins
David Arthur   +3 more
doaj   +1 more source

Investigation of structural, thermal and dielectric properties of PVC/modified magnetic nanoparticle composites

open access: yesCumhuriyet Science Journal, 2020
Three different composites (5, 10, and 20 wt. %) were prepared using purified PVC and POH-g-N3PTMS-g-Fe3O4. Firstly, 3-azidopropyltrimethoxysilane was synthesized under reflux from 3-chlorotrimethoxysilane and sodium azide.
Mehmet Coşkun   +2 more
doaj   +1 more source

Threats to Auditor Independence: Evidence from Iran [PDF]

open access: yesAthens Journal of Business & Economics, 2020
This paper aims to examine threats to auditor independence in Iran. A mixed questionnaire, including both quantitative closed-ended questions and an open-ended qualitative question, is developed to investigate threats to auditor independence.
Ashkan Mirzay Fashami   +2 more
doaj   +1 more source

بررسی تأثیر استفاده از PVC بر خرابی رطوبتی مخلوط آسفالت گرم [PDF]

open access: yesمهندسی عمران فردوسی, 2019
خرابی رطوبتی در مخلوط‌های آسفالتی از دست دادن دوام و مقاومت ناشی از تأثیر رطوبت تعریف می‌شود. در این پژوهش، تأثیر استفاده از ماده پلیمری پلی‌وینیل‌کلراید به‌عنوان اصلاح‏کننده قیر بر خرابی رطوبتی مخلوط‏های آسفالتی بررسی شده است.
غلامحسین حامدی
doaj   +1 more source

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