نتایج جستجو برای: Nucleation mechanism

تعداد نتایج: 581176  

Prediction of the nucleation mechanism is one of the most critical factors in the design of a crystallization system. Information about the nucleation mechanism helps to control the size, shape, size distribution, and purity of the produced crystals. When the crystallization method is used for producing nanoparticles, the nucleation mechanism should be predicted. In this study, an empirical cor...

Journal: :applied biotechnology reports 0
soheyla ershadi hamid rashedi ahmad fazeli

aggregation of pharmaceutical proteins reduces the efficiency and increases the cost of production. it can also lead to the reduced efficacy of drug or cause side effects on the patient’s body. investigating how to create them plays an important role to find agents that prevents the aggregation. this study was allocated for understanding the mechanism of formation of the reteplase protein using...

Journal: :international journal of iron & steel society of iran 2013
n. saeidi f. ashrafizadeh b. niroumand f. barlat

in the present research, damage mechanisms during room temperature uniaxial tensile testing of two different modern high strength dual phase steels,dp780 and dp980, were studied. detailed microstructural characterization of the strained and sectioned samples was performed by scanning electron microscopy (sem). the results revealed that interface decohesion, especially at the triple junctions of...

Journal: :journal of ultrafine grained and nanostructured materials 0
soha mohajeri department of materials science and engineering, sharif university of technology, tehran, iran. abolghassem dolati department of materials science and engineering, sharif university of technology, tehran, iran. mohammad ghorbani department of materials science and engineering, sharif university of technology, tehran, iran.

in this research, a sol-modified composite electrodeposition technique that combines the sol-gel method with the conventional electrodeposition process was utilized to deposit ni-tio2 nanocomposite coatings. cyclic voltammetry and chronoamperometry techniques were applied to study the influence of the tio2 sol concentration on the deposits’ electrochemical behavior. the results clearly showed t...

B. Niroumand F. Ashrafizadeh F. Barlat N. Saeidi,

In the present research, damage mechanisms during room temperature uniaxial tensile testing of two different modern high strength dual phase steels,DP780 and DP980, were studied. Detailed microstructural characterization of the strained and sectioned samples was performed by scanning electron microscopy (SEM). The results revealed that interface decohesion, especially at the triple junctions of...

Abolghassem Dolati Mohammad Ghorbani, Soha Mohajeri,

In this research, a sol-modified composite electrodeposition technique that combines the sol-gel method with the conventional electrodeposition process was utilized to deposit Ni-TiO2 nanocomposite coatings. Cyclic voltammetry and chronoamperometry techniques were applied to study the influence of the TiO2 sol concentration on the deposits’ electrochemical behavior. The results clearly showed t...

Industrial demands for more compact heat exchangers are a motivation to find new technology features. Electrohydrodynamics (EHD) is introduced as a promising phenomenon for heat transfer enhancement mechanisms. Similar to any new technology, EHD has not been understood completely yet and requires more fundamental studies. In boiling phase change phenomena, nucleation is the dominant mechanism i...

The initial stages of the  precipitation in a dilute Ni-Al binary alloy, Ni-11.6 at.%Al, were studied using differential scanning calorimetry (DSC), X-ray diffraction (XRD), electron diffraction and electron microscopy (FEG-SEM and TEM) techniques. Three samples were similarly solution treated and then cooled to room temperature under different cooling rates, 170، 25 and 0.03oCs-1. The resu...

Journal: :Materials Transactions, JIM 1991

Journal: :journal of ultrafine grained and nanostructured materials 2013
s.m. fatemi-varzaneh a. zarei-hanzaki r. vaghar

the study of nucleation mechanism of new grains during severe plastic deformation of magnesium alloys is of great importance to control the characteristics of final microstructures.  to investigate the role of discontinuous recrystallization, a wrought az31 magnesium alloy was deformed by accumulative back extrusion process at 330 °c.  the obtained microstructures were studied using optical and...

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