نتایج جستجو برای: surface magnetic properties

تعداد نتایج: 1712395  

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, ...

Anahita Javanmard Bahareh Nazemi Salman, Surena Vahabi

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, ...

A. Ghorbanpour Arani B. Rousta Navi M. Mohammadimehr,

In this research, the surface stress effect on the nonlocal vibration of piezoelectric square plate reinforced by single walled carbon nanotubes (SWCNTs) based on classical plate theory (CPT) and first order shear deformation theory (FSDT) is presented. The elastic properties of piezoelectric nanocomposite plate are estimated by Eshelby-Mori-Tanaka and the extended mixture rule approaches. The ...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (cofe2o4)/sio2 and manganese doped cobalt ferrite nanoparticles (mnxco1-xfe2o4 with x= 0.02, 0.04 and 0.06)/sio2 for possible biomedical application. all the ferrites nanoparticles were prepared by co-precipitation method using fecl3.6h2o, cocl2.6h2o and mncl2.2h2o as precursors, and were silica coated ...

Journal: :روش های عددی در مهندسی (استقلال) 0
محمود منیرواقفی m. monir-vaghefi احمد ساعتچی و جلال حجازی a saatchi and j.hejazi

in this work the effects of various methods of agitation on the properties of electroless ni-p-mos2 composite coatings were investigated. magnetic stirring as well as purging the solution with gas (air, oxygen, nitrogen) were used. plating rate, chemical composition, mos2 distribution, and hardness of the deposit were measured. topography of coating was studied with metallography and scanning e...

2014
Reinaldo G. Digigow Jean-François Dechézelles Hervé Dietsch Isabelle Geissbühler Dimitri Vanhecke Christoph Geers Ann M. Hirt Barbara Rothen-Rutishauser Alke Petri-Fink

We report on the synthesis and characterization of functional silica hybrid magnetic nanoparticles (SHMNPs). The co-condensation of 3-aminopropyltriethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) in presence of superparamagnetic iron oxide nanoparticles (SPIONs) leads to hybrid magnetic silica particles that are surface-functionalized with primary amino groups. In this work, a comprehe...

Journal: :international journal of environmental research 2011
k. sandeep a.k. warrier b.g. harshavardhana r. shankar

iron oxide minerals in soils provide valuable insights into pedogenic processes. a wealth of such information has been obtained by rock magnetic investigations on temperate soils but similar studies on tropical soils are rare. here, we report rock magnetic data on pristine soil profiles and surficial soils from five catchments in the tropical southern india and throw light on the pedogenic pro...

Journal: :journal of medical bacteriology 0
enayatollah kalantar kurdistan environmental health research center, kurdistan university of medical sciences, sanandaj, ir iran and food supplements and probiotic research center, alborz university of medical sciences, karaj, ir iran. kourush kabir food supplements and probiotic research center, alborz university of medical sciences, karaj, ir iran. fardin gharibi deputy of research, kurdistan university of medical sciences, sanandaj, ir iran. shiva hatami food supplements and probiotic research center, alborz university of medical sciences, karaj, ir iran. afshin maleki kurdistan environmental health research center, kurdistan university of medical sciences, sanandaj, ir iran.

background: the current study aimed to determine the effect and properties of surface-modified copper doped cu:zno nps on killing curves of bacterial pathogens. m ethods:   preparation  of   in  situ   surface-modified  copper  doped  zno nanoparticles (cu:zno nps) was done according to standard procedure.assay for antimicrobial activity of cu:zno nps against bacterial pathogens was carried out...

Journal: :journal of nanostructures 2012
t. hosseinabad g. nabiyouni k. hedayati

co-fe films were electrodeposited on cu substrate from electrolytes with different co concentration  levels. x-ray diffraction (xrd) was used  to  investigate  the  films  crystal  structures. the  results  indicate that  if  the  co  concentration  is  less  that  the  fe  concentration,  the cubic  structure  appears  in  the  films, while  the  hexagonal  structure dominates when  the co  co...

Journal: :journal of nanostructures 2013
m. almasi kashi a. ramazani v. asgari e. jafari- khamse

the effect of length variation on the magnetic properties of nife alloy nanowires electrodeposited into the alumina template was investigated. the diameter (45±2.5 nm) and length (~ 1.9, 7.12, 8.3, 9.5 and 13.3 µm) of the nanowires were estimated from scanning electron microscopy images. energy dispersive spectroscopy results showed ni3fe7 composition of the alloy nanowires.  the magnetic prope...

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