نتایج جستجو برای: relative density and microstructure

تعداد نتایج: 16894759  

In recent years, biodiesel has been considered as a good alternative of diesel fuels. Density and viscosity are two important properties of these fuels. In this study, density and kinematic viscosity of biodiesel-diesel blends were estimated by using artificial neural network (ANN). A three-layer feed forward neural network with Levenberg-Marquard (LM) algorithm was used for learning empirical ...

آسمار, مهدی, شهرکی, غلامحسین,

In a faunestic study, to determine the frequency and distribution of soft ticks (Argasidae) in suberbs of Hamden city, 16 Villages were selected randomly from 12 rural districts. For village 10 places including five living room and five stables were adapted in different geographical directions (north, south, east, west & center). The specimens were gathered by handcatch method using a forceps...

Air pluviation is a method of preparing laboratory models to carry out many geotechnical experiments. In this study, a new air pluviation device has been developed by the researchers. For laboratory modeling, it is important to calibrate the device using air pluviation to produce accurate specimens with desirable conditions and relative densities. A series of laboratory tests were conducted to ...

Journal: :Metals 2023

In this study, Ti-22Al-25Nb intermetallic compound alloys are fabricated through selective laser melting (SLM) at four scanning speeds (600, 700, 800, and 900 mm/s). The microstructure mechanical properties of the systematically evaluated. results indicate that speed significantly affects characteristics (e.g., relative density, grain size, texture precipitation secondary phases). variation law...

انصاری پیرسرائی, زربخت , دیرنده, عیسی, معصومی, رضا,

The objective of this study was to evaluate the apoptotic effects of increasing granulosa cell density and increasing estradiol on relative gene expression associated with apoptosis factors (Bcl-2, Bax and GADD45β) and cell cycle (CCDN-2). For this reason after collecting ovaries of cows from an abattoir, granulosa cells were separated from 4- to 8-mm follicles. Then, viable cells were counted ...

ژورنال: سرامیک ایران 2022

Flash sintering is one of the latest sintering processes of ceramics, which has recently attracted the attention of researchers due to its high sintering speed and significant energy reduction. An essential feature of successful flash is negative temperature coefficient (NTC) semiconductor behavior. In this research, the flash sinter process of ceramic varistor based on ZnO-Bi2O3-Sb2O3 (ZBS) ha...

عقدایی, روح الله, عبدالمنافی, عاطفه,

Diffraction line broadening analysis has been proved to be an extremely powerful method to study the defect properties of crystalline materials, since different types of defects produce different types of diffraction line profiles. In other word, the distribution of intensity, especially in tails of line profile, strongly depends on the crystallite size and dislocation structures. In this paper...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1385

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