در این تحقیق تاثیر چسب اپوکسی تقویت‌شده با نانوفیبرکربن در سه سطح صفر، ۰/۴ و ۱/۵ درصد بر روی مقاومت اتصالات گوشه‌ای متعارف در صنایع مبلمان مورد بررسی قرار گرفت. نانو‌فیبرهای کربن توسط دستگاه التراسونیک در ماتریس چسب پلیمری پراکنش یافتند و نمونه‌های آزمونی اتصال، با استف...

In drought risk management, the regional analysis of drought is significant. In this paper, this important issue is investigated by presenting the new hydrological regional drought index (RDI). For this purpose, the Ajichai basin was selected as the study area. First, t...

In the present study, CanESM2 climate change model and stormwater management model (SWMM) were employed to investigate the climate change effects on the quantity and quality of urban runoff in a part of Karaj watershed, Alborz Province. The base period (1985-2005) and f...

At present, the occurrence of dust storms is one of the most important environmental problems in Khuzestan Province, and the south and southeast regions of Ahwaz have been recognized as one of the interior dust sources and are the priority of corrective operations. Give...

The present study is investigated the earth dam stability during drawdown based on both numerical and experimental aspects. To validate the numerical model, a model was performed experimentally. Some soil mechanic tests were carried out through the hydraulic experiments...

این تحقیق با هدف تاثیر استفاده از پلی آلومینیم کلراید (PAC) و نانوکیتوزان بر ویژگی های مقاومتی خمیرکاغذ شیمیایی- مکانیکی(CMP) انجام شد. به همین منظور، ابتدا مقداری ازخمیرشیمیایی-مکانیکی(CMP) رنگبری شده کارخانه چوب و کاغذ مازندران به عنوان نمونه شاهد انتخاب شد. سپس پلی آ...

Desertification is a phenomenon that has more destructive effects in arid, semi-arid, and semi-humid regions than in other regions. This paper tries to provide a map of the future of desertification in Tehran Province, for futurism in the face of land degradation and de...

در این پژوهش اثر استفاده از نانوالیاف سلولز بر ویژگی‌های کاغذهای دست‌ساز ساخته شده با الیاف کنف و کاغذهای دست‌ساز ساخته شده با الیاف خمیر چوب و همچنین کاربرد این ماده به عنوان استحکام بخش جهت بازگرداندن استحکام به کاغذهای دست‌ساز بررسی شد. بدین منظور پس از ساخت نمونه‌ها...

Investigating and understanding river change issues is one of the important factors in sediment hydraulic sciences and river engineering. These studies can be done with the help of physical, mathematical models, or both, but due to financial and time constraints, mathem...

Reducing surface water resources and successive droughts and consequently excessive use of groundwater resources, especially for agricultural purposes, have caused irreparable damage to the natural resources of the country. In the meantime, knowing the status of the wat...