نتایج جستجو برای: diffusion method

تعداد نتایج: 1762018  

Journal: :journal of lasers in medical sciences 0
maryam afsari golshan sharif university of technology, tehran, iran maryam ghasemi tarei sharif university of technology, tehran, iran ahmad amjadi sharif university of technology, tehran, iran

introduction : due to the importance of laser light penetration and propagation in biological tissues, many researchers have proposed several numerical methods such as monte carlo, finite element and green function methods. among them, the monte carlo method is an accurate method which can be applied for different tissues. however, because of its statistical nature, monte carlo simulation requi...

Journal: :bulletin of the iranian mathematical society 2015
d. rostamy f. zabihi

in this article, we study the new streamline diffusion finite element for treating the linear second order hyperbolic initial-boundary value problem. we prove a posteriori $ l^2(l^2)$ and error estimates for this method under minimal regularity hypothesis. test problem of an application of the wave equation in the laser is presented to verify the efficiency and accuracy of the method.

Journal: :avicenna journal of phytomedicine 0
mahmuda nasrin department of pharmacy jahangirnagar university pritesh ranjan dash department of pharmacy, brac university mohammad shawkat ali department of pharmacy, brac university

objectives: grewia paniculata (family: malvaceae) has been used to treat inflammation, respiratory disorders and fever. it is additionally employed for other health conditions including colds, diarrhea and as an insecticide in bangladesh. the aim of the present study was to investigate the antibacterial and cytotoxic activities of different extracts of grewia paniculata. materials and methods: ...

Journal: :iranian journal of basic medical sciences 0
maryam maghsoodi drug applied research center, school of pharmacy, tabriz university of medical sciences, tabriz, iran leila barghi school of pharmacy, tabriz university of medical sciences, tabriz, iran

objective(s) ibuprofen is a problematic drug in tableting, and dissolution due to its poor solubility, hydrophobicity, and tendency to stick to surface. because of the bad compaction behavior ibuprofen has to be granulated usually before tableting. however, it would be more satisfactory to obtain directly during the crystallization step crystalline particles that can be directly compressed and ...

Journal: :journal of agricultural science and technology 2013
e. mansour a. ben khaled b. lachiheb m. abid kh. bachar

pomegranate tree possesses a vast ethnomedical history and represents a phytochemical reservoir of heuristic medicinal value. in the present study, total phenolics, antioxidant, and antibacterial activities of pomegranate peel were determined by folin–ciocalteu, 2,2-diphenyl-1-picrylhydrazyl (dpph) and disk-diffusion methods, respectively, and compared among the accessions. methanolic extract g...

 Abstract: Determination of the diffusion coefficient on the base of solution of a linear inverse problem of the parameter estimation using the Least-square method is presented in this research. For this propose a set of temperature measurements at a single sensor location inside the heat conducting body was considered. The corresponding direct problem was then solved by the application of the ...

Determining the diffusion coefficient based on the solution of the linear inverse problem of the parameter estimation by using the Least-square method is presented. A set of temperature measurements at a single sensor location inside the heat conducting body is required. The corresponding direct problem will be solved by an application of the heat fundamental solution.

Journal: :iranian journal of blood and cancer 0
elnaz jafarzadeh department of pharmaceutics, faculty of pharmacy, pharmaceutical sciences branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) mojgan pourmokhtar blood transfusion research center, high institute for research and education in transfusion medicine, tehran, iranسازمان اصلی تایید شده: سازمان انتقال خون ایران (blood transfusion research center) setareh tavili department of pharmaceutics, faculty of pharmacy, pharmaceutical sciences branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

background: recently the role of platelets in the tissue regeneration, wound healing and prevention and control of infections has been reported. we aimed to assess the antimicrobial effect of human platelet concentrate against six bacteria, commonly found in wound and hospital-acquired infections. methods: in vitro susceptibility to samples of 10 random human platelet concentrates was determine...

Journal: :iranian journal of mathematical chemistry 2014
a. saadatmandi n. nafar s. p. toufighi

in chemical engineering, several processes are represented by singular boundary value problems. in general, classical numerical methods fail to produce good approximations for the singular boundary value problems. in this paper, chebyshev finite difference (chfd) method and dtm-pad´e method, which is a combination of differential transform method (dtm) and pad´e approximant, are applied for sol...

Journal: :iranian journal of science and technology (sciences) 2013
m. merdan

in this article, an analytical approximate solution of nonlinear fractional convection-diffusion with modifiedriemann-liouville derivative was obtained with the help of fractional variational iteration method (fvim). a newapplication of fractional variational iteration method (fvim) was extended to derive analytical solutions in theform of a series for this equation. it is indicated that the so...

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