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Danial Khojasteh,Nooshin Moradi Kazerooni,Marco Marengo 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.71 No.-
Encapsulation has received a surge of interest in the biotechnological, chemical and pharmaceuticalfields and other industrial processes, owing to numerous applications such as influidized catalyticcracking, antenna and wire fabrication, catalytic reactions, and process industries. For example,encapsulation is a technique used to entrap active agents within a carrier material and can be achievedthrough impact of droplets of encapsulating material on the solid particles of active agents. Consideringthe importance of dynamics of drop-particle collision, which directly affects the quality offilmdeposition during encapsulation, the current review is presented to investigate various aspects of dropimpact on dry solid spherical surfaces, which is still lacking in the existing literature and aims atencouraging more researchers to study this topic. Also, this review covers frequent examples of dropletimpingement onto curved surfaces, with a focus on the latest scientificfindings in droplet impactingsolid spherical surfaces.
Droplet impact on superhydrophobic surfaces: A review of recent developments
Danial Khojasteh,Moradi Kazerooni,Sahba Salarian,Reza Kamali 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.42 No.-
A comprehensive understanding of the dynamics of droplets undergoing collisions with solid surfaces isrequired in a number of technological and industrial situations. Recently, a new kind of functional surfacewith particular characteristics has attracted increasing attention among the scholars and industrialists. Besides the thirst for knowledge, researchers have been driven by the possible applications of dropimpinging superhydrophobic materials in severalfields, such as self-cleaning, ice resisting, corrosionprotection, etc. Hence, even the least improvement in understanding the underlying physics of dropletimpacting superhydrophobic surfaces is of profound significance. Consequently, this paper presents abrief review of potential applications of superhydrophobic surfaces. The special feature of this study is tothoroughly focus on the most recent advances regarding dynamics and kinematics of drop impingingsuperhydrophobic substrates. On this account, the latest scientificfindings in droplet impact and itsdeformation plus the effects of surface characteristics have been surveyed exhaustively.
Robust Delay Dependent Fault Estimation for a Class of Interconnected Nonlinear Time Delay Systems
Alireza Khayatian,Maryam Kazerooni,Ali Akbar Safavi 제어·로봇·시스템학회 2016 International Journal of Control, Automation, and Vol.14 No.2
This paper focuses on the problem of fault estimation for a class of interconnected nonlinear systems withtime varying delays. In contrast to the common assumption imposed on the problem in most literature, here, there isno need for the delay rate to be less than one. Both actuator and component faults are considered within the generalfault model invoked as multiplicative faults in this study. Robust adaptive observers are used to detect and estimatesimultaneously the states and the parameter faults in each subsystem. The designed observers ensure a prescribedH∞ performance level for the fault estimation error, irrespective of the uncertainties which are assumed here tobe the unknown interconnections between the subsystems. With the aid of H∞ performance index, the commonassumption regarding the observer matching condition is no longer required. Sufficient conditions for asymptoticstability of the observers are derived via a matrix inequality approach with the aid of Lyapunov Krasovskii function. Finally, a simulation example is presented to show the validity and feasibility of the proposed method.
Esmatabadi, Mohammad Javad Dehghan,Farhangi, Baharak,Safari, Zahra,Kazerooni, Hanif,Shirzad, Hadi,Zolghadr, Fatemeh,Sadeghizadeh, Majid Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.6
Colon cancer is one of the leading causes of cancer-associated death worldwide. The prognosis for advanced colorectal cancers remains dismal, mainly due to the propensity for metastatic progression. Accordingly, there is a need for effective anti-metastasis therapeutic agents. Since a great body of research has indicated anticancer effects for curcumin, we investigated the effects of dendrosomal curcumin (DNC) on cellular migration and adhesion of human SW480 cells and possible molecular mechanisms involved. Different methods were applied in this study including MTT, Scratch and adhesion assays as well as real-time PCR and transwell chamber assays. Based on the results obtained, DNC inhibits metastasis by decreasing Hef 1, Zeb 1 and Claudin 1 mRNA levels and can reduce SW480 cell proliferation with $IC_{50}$values of 15.9, 11.6 and $7.64{\mu}M$ at 24, 48 and 72h post-treatment. Thus it might be considered as a safe formulation for therapeutic purpose in colorectal cancer cases.
Transplantation of Neural Stem Cells Cultured in Alginate Scaffold for Spinal Cord Injury in Rats
Seyed Mojtaba Hosseini,Ali Sharafkhah,Omid Koohi-Hosseinabadi,Maryam Semsar-Kazerooni 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.4
Study Design: This study investigated the effects of transplantation of alginate encapsulated neural stem cells (NSCs) on spinal cord injury in Sprague-Dawley male rats. The neurological functions were assessed for 6 weeks after transplantation along with a histological study and measurement of caspase-3 levels. Purpose: The aim of this study was to discover whether NSCs cultured in alginate transplantation improve recovery from spinal cord injury. Overview of Literature: Spinal cord injury is one of the leading causes of disability and it has no effective treatment. Spinal cord injury can also cause sensory impairment. With an impetus on using stem cells therapy in various central nervous system settings, there is an interest in using stem cells for addressing spinal cord injury. Neural stem cell is one type of stem cells that is able to differentiate to all three neural lineages and it shows promise in spinal injury treatment. Furthermore, a number of studies have shown that culturing NSCs in three-dimensional (3D) scaffolds like alginate could enhance neural differentiation. Methods: The NSCs were isolated from 14-day-old rat embryos. The isolated NSCs were cultured in growth media containing basic fibroblast growth factor and endothelial growth factor. The cells were characterized by differentiating to three neural lineages and they were cultured in an alginate scaffold. After 7 days the cells were encapsulated and transplanted in a rat model of spinal cord injury. Results: Our data showed that culturing in an alginate 3D scaffold and transplantation of the NSCs could improve neurological outcome in a rat model of spinal cord injury. The inflammation scores and lesion sizes and also the activity of caspase-3 (for apoptosis evaluation) were less in encapsulated neural stem cell transplantation cases. Conclusions: Transplantation of NSCs that were cultured in an alginate scaffold led to a better clinical and histological outcome for recovery from spinal cord injury in a rat model.
Using microwave heating for synthesis of SrCO3 nanostructures with different morphologies
Hasan Jahangiri,Mehdi Ranjbar,Mohammad Ali Taher,Hanif kazerooni 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Strontium carbonate (SrCO3) nanostructures were synthesized successfully via simple microwaveapproach by Sr(NO3)2, carbonate powder and sodium hydroxide (NaOH) as reagents. The effects ofmicrowave time and power were investigated on product size and morphology. The products werecharacterized with X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmissionelectron microscopy (TEM), Ultraviolet–visible (UV–vis) and room temperature photoluminescencespectroscopy (PL).