نتایج جستجو برای: well diffusion

تعداد نتایج: 1662977  

Daneshpour , S., Oshaghi, S., Anvari, S. Z. ,

In this study, diffusion bonding between titanium and AISI 304 austenitic stainless steel by Ag interlayer was investigated. In order to carry out this research, samples prepared after surface preparation were placed inside the fixture and placed at the temperatures of 750,800 and 850 °C in the 30,60 and 90 min in the furnace under argon protective gas. The phase transformation and microstructu...

Journal: :journal of medical signals and sensors 0
siham ait oussous saïd boujraf

the goal is assessing the diffusion magnetic resonance imaging (dmri) method effi ciency in characterizing focal hepatic lesions (fhls). about 28-fhl patients were studied in radiology and clinical imaging department of our university hospital using 1.5 tesla mri system between january 2010 and june 2011. patients underwent hepatic mri consisting of dynamic t1- and t2-weighted imaging. the dmri...

Journal: :journal of agricultural science and technology 2011
s. minaei a. motevali e. ahmadi m. h. azizi

drying behavior of two types of pomegranates as well as the effect of drying conditions on moisture loss trend and on effective diffusion coefficient of arils are discussed in this article. also, an appropriate mathematical drying model as well as the activation energy of sweet and sour pomegranate arils, dried in vacuum and microwave driers are pursued and presented. results of regression anal...

Journal: :iranian journal of radiology 0
si shen medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china hao wang pain clinic, the first affiliated hospital of jinan university, jinan university, guangzhou, china; pain clinic, the first affiliated hospital of jinan university, jinan university, guangzhou, china. tel: +86-13430267880, fax: +86-2038688416 jing zhang medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china fei wang medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china si-run liu medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china

conclusion adc, fa, and t2* values may quantitatively reflect the microstructural characteristics of np, therefore they could be used to detect the minimal changes of early ldd. results the adc, fa, and t2* values were different (p < 0.05) among different rois within the same disc or among corresponding rois in different level discs. while the average values of adc increased regularly with the ...

Journal: :iranian journal of radiology 0
mahsa raisi-nafchi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran fariborz faeghi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran; department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran alireza zali department of neurosurgery, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran hamidreza haghighatkhah department of radiology, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran jalal jalal-shokouhi jam-e-jam medical imaging center, tehran, iran

background diffusion-weighted imaging (dwi) is a form of magnetic resonance imaging (mri) based on measuring the random brownian motion of water molecules within the biological tissues and is particularly useful in tumor characterization. objectives the purpose of this study was to evaluate the diagnostic value of dw mri and the apparent diffusion coefficient (adc) for preoperative grading of a...

Background and Objectives: Green cardamom with scientific name of Elettaria cardamomum belongs to Zingiberaceae family. The purpose of this study was to determine the chemical composition and antioxidant activity and antibacterial effects of Elettaria cardamomum essential oil on some pathogenic microorganisms in vitro.   Methods: In this experimental study, first, Elettaria cardamomum essentia...

Journal: :medical laboratory journal 0
mohammad mohammaddoost chakoosari of islamic azad university of lahijan, guilan, iran mohammad faezi ghasemi department of microbiology, islamic azad university of lahijan, guilan, iran alireza masiha msc in microbiology reza kazemi darsanaki young researchers and elite club abolfazl amini laboratory sciences research center

abstract       background and objective: probiotics are living microorganisms that have beneficial effects on the health of digestive system. the aim of this study was to evaluate the antimicrobial ability of acidic and neutral supernatants (culture supernatant) of lactic acid bacteria against common bacterial pathogens.        methods: four species of lactic acid bacteria (lactobacillus planta...

Journal: :jundishapur journal of natural pharmaceutical products 0
behrooz eftekhar department of endodontics, ahvaz jundishapur university of medical sciences, ahvaz, ir iran eskandar moghimipour medicinal plants research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran ebrahim eini student research committee, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; student research committee, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9163644166 mansour jafarzadeh department of endodontics, ahvaz jundishapur university of medical sciences, ahvaz, ir iran narges behrooz school of dental, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

background intra canal medicaments are used to reduce the number of bacteria and reinfection in endodontic procedures. calcium hydroxide was introduced to endodontics by herman as an intracanal antimicrobial agent. objectives the aim of this study was to present an injectable formulation of calcium hydroxide then compare the final ph of this new formulation with metapaste and evaluate the effec...

2006
Romas Baronas Feliksas Ivanauskas

This paper presents mathematical models of potentiometric as well as amperometric biosensors, based on an electrode covered with an enzyme membrane. The models involve three regions: the enzyme layer where enzyme reaction as well as mass transport by diffusion takes place, a diffusion limiting region where only the diffusion takes place, and a convective region, where the analyte concentration ...

2014
S.Nagarajan S.Kulandaivel R. Balaji R. Santhanakaruppu G. G. Nandhini

In this study, the antimicrobial activity of three solvent extracts of consortium (mixed culture) of commercial available probiotic bacteria against eight fish pathogens using well diffusion and disc diffusion assay method. The probiotic bacteria inhibited almost all the fish pathogens tested. All tested strains were significantly inhibited at probability level (P<0.5).Zone of inhibition was hi...

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