نتایج جستجو برای: surface properties

تعداد نتایج: 1428668  

Journal: :iranian journal of medical sciences 0
bahareh nazemi salman department of pedodontics, dental school, zanjan university of medical sciences, zanjan, iran surena vahabi department of periodontics, dental school, shahid beheshti university of medical sciences, tehran, iran anahita javanmard dentist; tehran, iran

atomic force microscopy (afm) is a three-dimensional topographic technique with a high atomic resolution to measure surface roughness. afm is a kind of scanning probe microscope, and its near-field technique is based on the interaction between a sharp tip and the atoms of the sample surface. there are several methods and many ways to modify the tip of the afm to investigate surface properties, ...

Journal: :Journal of the Japan Society of Colour Material 1989

The creation of modified layer on metal surfaces using new methods is one of the procedures in surface engineering which can improve the surface mechanical properties. The electrical discharge process is a new method that can form a modified layer on the metal surfaces. This study aims to improve of pure aluminum surface properties through Electrical Discharge process with Monel 400 electrode. ...

Journal: :nanomedicine journal 0
mahyar ebrahimi sharif university of technology, tehran, iranسازمان اصلی تایید شده: دانشگاه صنعتی شریف (sharif university of technology)

this paper provides an overview of how the surface properties of ferromagnetic nanoparticles dispersed in fluids is modified by natural and biocompatible polymers. among common magnetic nanoparticles, magnetite (fe3o4) and maghemite (g-fe203) are popular candidates because of their biocompatibility. natural polymeric coating materials are the most commonly used biocompatible magnetic nanopartic...

Journal: :Journal of Advances in Physical Chemistry 2016

Journal: :علوم 0
محمداسماعیل عظیم عراقی m. e. azim araghi دانشگاه خوارزمی انسیه خلیلی درمنی ensieh khalili dermani دانشجو/دانشگاه خوارزمی

in this research work nano porous silicon layers with different porosity were prepared by using electrochemical etching. surface morphology and size of pores were investigated by scanning electron microscopy (sem).tio2 thin films with ebpvd method have been deposited on the surface of psi layers. the influence of anodization conditions such as anodization time interval and current density on el...

Journal: :جنگل و فرآورده های چوب 0
فاطمه رضائی کارشناس ارشد، گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران علی اکبر عنایتی استاد گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران محمد لایقی استادیار گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران حمیدرضا قاسمی منفرد راد استاد دانشکدة فنی مهندسی، دانشگاه تهران، تهران، ایران

in this research the possibility of vine pruning fibers in combination with wood fibers was studied in order to fabricate medium density fiberboard. vine pruning fibers content in three levels of 0/100, 30/70 and 60/40 (weight percent) and press time in three levels of 4, 5 and 6 minutes were as variable factors. one layer panels with a density of 0.65 g/cm3 and thickness of 15 mm were made. th...

Journal: :Journal of the Society of Powder Technology, Japan 1995

Beikzadeh, S, Farhoodi , M, kazemian-, F, Mirmoghtadaie *, L, sheikhi, Zh, shojaee-aliabadi, S,

Background and Objectives: Cold plasma is an eco-friendly and non-thermal technique, which has become an important technology to change the physical and chemical features of polymers. Recently, cold plasma has been considered in the decontamination and modification of packaging materials in the food industry. Therefore, the objective of this study was to survey the effect of using low-pressure ...

Present work focuses on the synthesis strategies for different CuO nanostructures along with associated formation mechanisms and their interesting fundamental properties, and promising applications in biological and environmental remediation. We present a variety of synthesis techniques for producing diverse types of CuO nanostructures with various morphologies such as nanoparticles, nanoleaves...

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