Results 11 to 20 of about 2,811 (191)

Adsorption of Edifenphos pesticide using polypyrrole modified zeolite composite [PDF]

open access: yes, 2021
Today, due to the growing population and increasing agricultural and food production, the use of toxins and organophosphate and organochlorine pesticides, especially Edifenphos, is increasing in the agricultural sector.
Arezoo Ghadi   +2 more
core   +2 more sources

Optimization of Mercury Adsorption Process from Aqueous Solutions using Polypyrrol/clinoptilolite Composites with Taguchi Method [PDF]

open access: yes, 2021
The release of heavy metals into the environment has caused major problems around the world due to industrialization and urbanization. The aim of this study was to examine the possibility of mercury (Hg(II)) removal from aqueous solution in batch process
Hossein Esfandian
core   +2 more sources

Unsaturated Polyester Resin Nanocomposites: An Overview [PDF]

open access: yes, 2023
Unsaturated polyester resins (UPRs) including ortho, iso, bisphenolic and vinylester are the most widely used thermosetting polymeric resins in the form of coating and matrix in the industry, making up around three quarters of all thermoset resins used ...
Hajar Jamshidi   +2 more
core   +1 more source

An Evaluation and Comparison of Mechanical Properties of Phenolic-Glass Fabric Composites Prepared by Vacuum Bag-Only and Autoclave Processes [PDF]

open access: yes, 2023
Hypothesis: The curing process for phenolic resin composites is always carried out under press or autoclave pressure, as water by-products are released during curing process. As a result, when phenolic composite parts are formed using the vacuum bag-only
Alireza sabet   +2 more
core   +1 more source

خمش غیرخطی تیرهای کامپوزیتی تقویت‌شده با پلاکت‌های‌گرافن با استفاده از روش مربعات دیفرانسیلی هارمونیک [PDF]

open access: yesنشریه علوم کاربردی و محاسباتی در مکانیک, 2022
در این پژوهش تجزیه و تحلیل خمش غیرخطی یک تیر کامپوزیتی تقویت‌شده توسط پلاکت‌های گرافن با توزیع غیر یکنواخت در راستای ضخامت، بررسی و ارائه شده است. معادلات دیفرانسیل غیرخطی حاکم در این پژوهش بر اساس نظریه تغییر شکل برشی مرتبه اول و اصل حداقل انرژی پتانسیل،
حسن شکراللهی   +1 more
doaj   +1 more source

Poly(lactic acid)/Polycaprolactone/Graphene Bionanocomposites: Microstructural, Mechanical and Thermal Properties [PDF]

open access: yes, 2022
Hypothesis: Among the types of bioplastics, poly(lactic acid) (PLA) has the ability to compete with petroleum-based polymers due to its favorable properties such as high tensile strength and high modulus of elasticity.
Hogatallah Ziyaei   +2 more
core   +1 more source

Removal of Diazinon Insecticide from Aqueous Solutions by Polypyrrole onto Polyvinyl Alcohol Composite [PDF]

open access: yes, 2023
Organophosphorus compounds are extensively used worldwide as pesticides which cause great hazards to human health and the environment. The aim of this study was to investigate the removal of diazinon insecticide from aqueous solution by using polypyrrole
Hossein Esfandian   +1 more
core   +1 more source

بررسی اثر ماده بلیچینگ کربامیدپراکساید بر تغییر رنگ و ترنسلوسنسی سه نوع کامپوزیت رزین، در حضور یا عدم حضور لایه پوشاننده سطحی [PDF]

open access: yesJournal of Mashhad Dental School, 2019
مقدمه: مواد بلیچینگ می توانند موجب تغییر رنگ و ترنسلوسنسی کامپوزیت ها گردند. با توجه به استفاده روز افزون از کامپوزیت های دارای ذرات نانو با بیس سایلوران، در این مطالعه به بررسی تغییرات رنگی و ترنسلوسنسی این مواد بعد از کاربرد مواد بلیچینگپرداخته شد ...
عبدالرحیم داوری   +4 more
doaj   +1 more source

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