نتایج جستجو برای: temperature rise

تعداد نتایج: 579155  

Journal: :Journal of Magnetism and Magnetic Materials 2022

We compute the heat generated by (non-interacting) nanomagnets subjected to an alternating magnetic field (AMF) and study its transfer hosting medium environment. For first task, we (or specific absorption rate S) using ac susceptibility in linear regime. second loss of environment is modeled with help a balance (macroscopic) equation based on Newton’s law cooling. This solved both numerically ...

Journal: :caspian journal of environmental sciences 2012
al. et m. rowshantabari

the effect of temperature on the main feeding parameters of mnemiopsis leidyi from the southern caspian sea was studied in 2002. the clearance rates and daily rations were estimated from laboratory experiments in a wide range of temperatures from 12 to 27 ?c for m. leidyi of 12?17 mm in length. clearance rate values changed from 52.5 to 107.3 ml ind-1 h-1. the coefficient q10 in temperature 12 ...

Journal: :Journal of Economics and Public Finance 2017

Journal: :journal of lasers in medical sciences 0
abbas majdabadi nuclear science and technology research institute, laser and optic resrearch school, tehran, iran mohammed abazari faculty of energy engineering and physics, amirkabir university of technology (tehran polytechnic), tehran, iran

i ntroduction: liposuction using laser is now one of the most common cosmetic surgery. this new method has minimized the disadvantages of the conventional liposuction including blood loss, skin laxity and long recovery time. benefits of the new liposuction methods which include less trauma, bleeding and skin tightening prove the superiority of these methods over the traditional mechanical metho...

2014
Sayed-Mostafa Mousavinasab Maryam Khoroushi Mohammadreza Moharreri Mohammad Atai

OBJECTIVES Light-curing of resin-based materials (RBMs) increases the pulp chamber temperature, with detrimental effects on the vital pulp. This in vitro study compared the temperature rise under demineralized human tooth dentin during light-curing and the degrees of conversion (DCs) of three different RBMs using quartz tungsten halogen (QTH) and light-emitting diode (LED) units (LCUs). MATER...

Journal: :Physics in medicine and biology 1999
G M Van Leeuwen J J Lagendijk B J Van Leersum A P Zwamborn S N Hornsleth A N Kotte

In this study we evaluated for a realistic head model the 3D temperature rise induced by a mobile phone. This was done numerically with the consecutive use of an FDTD model to predict the absorbed electromagnetic power distribution, and a thermal model describing bioheat transfer both by conduction and by blood flow. We calculated a maximum rise in brain temperature of 0.11 degrees C for an ant...

Journal: :iranian journal of medical physics 0
t. gorjiara m.sc. in medical physics, medical physics dept., tarbiat modarres university, tehran, iran. m. mokhtari-dizaji associate professor, medical physics dept., tarbiat modarres university, tehran, iran. h. ghanaati associate professor, radiology dept., tehran medical sciences university, tehran, iran.

introduction:  laser  interstitial  thermotherapy  (litt)  is  an  internal  ablation  therapy  method  consisting of a percutaneous or intraoperative insertion of laser fibers directly into the liver tumor with  maximum diameter of 5 cm. in this treatment method, there isn’t any general information about the  relationship  between  increasing  the  exposure  power,  coagulation  and  carboniza...

Journal: :journal of dentistry, tehran university of medical sciences 0
ahmad najafi abrandabadi seyedeh mahsa sheikh-al-eslamian narges panahandeh

objectives: the aim of this in-vitro study was to assess the thermal effect of light emitting diode (led) light curing unit on the enamel etching time. materials and methods: three treatment groups with 15 enamel specimens each were used in this study: g1: fifteen seconds of etching, g2: five seconds of etching, g3: five seconds of etching plus led light irradiation (simultaneously). the micro ...

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