نتایج جستجو برای: plasma radiofrequency heating

تعداد نتایج: 423514  

Journal: :journal of biomedical physics and engineering 0
gh mortazavi s a r mortazavi a r mehdizadeh

a large body of evidence now indicates that the amount of mercury released from dental amalgam fillings can be significantly accelerated by exposure to radiofrequency electromagnetic fields (rf-emfs) such as common mobile phones and magnetic resonance imaging (mri). studies performed on the increased microleakage of dental amalgam restorations after exposure to rf-emfs have further supported th...

1997
Shahid Rauf Mark J. Kushner

Low pressure ~,10 mTorr! inductively coupled plasma sources are being developed for etching and deposition of semiconductors and metals. In models for these devices, plasma dynamics are typically coupled to the electromagnetic fields through Ohm’s law, which implies that collisional heating is the dominant power transfer mechanism. In this article, we describe an algorithm to couple plasma dyna...

2006
S. A. Shah J. A. Dickson

Nonspecific ¡mmunocompetencein VX2 tumor-bearing rabbits was assessed by skin response to dinitrochlorobenzene and development of antibody titer to bovine serum albumin. Skin reactivity to a 3 M KCI extract of the VX2 and antitumor antibody titer were used to monitor host immunocompetence against the tumor. Rabbits bearing a 15to 20-ml i.m. VX2 tumor in the hind limb were treated by local and ...

2008
Tetsuo SEKI Takashi MUTOH Ryuhei KUMAZAWA Kenji SAITO Hiroshi KASAHARA Yanping ZHAO Jong-Gu KWAK

Electron heating regime using with radio-frequency waves in the ion cyclotron range of frequencies (ICRF) has been investigated in helical magnetic configuration. Mode-conversion scenario was applied to the LHD plasmas. When the wave frequency is change to be lower than that in the standard ICRF heating (minority ion heating) condition, the resonance layers are moved away to the peripheral regi...

A R Mehdizadeh Gh Mortazavi, S A R Mortazavi,

A large body of evidence now indicates that the amount of mercury released from dental amalgam fillings can be significantly accelerated by exposure to radiofrequency electromagnetic fields (RF-EMFs) such as common mobile phones and magnetic resonance imaging (MRI). Studies performed on the increased microleakage of dental amalgam restorations after exposure to RF-EMFs have further supported th...

Journal: :Mathematical and Computer Modelling 2009
M. M. Tung M. Trujillo J. A. López Molina M. J. Rivera E. J. Berjano

In modern surgery, a multitude of minimally intrusive operational techniques are used which are based on the punctual heating of target zones of human tissue via laser or radio-frequency currents. Traditionally, these processes are modeled by the bioheat equation introduced by Pennes, who considers Fourier’s theory of heat conduction. We present an alternative and more realistic model establish...

Journal: :The Review of scientific instruments 2012
G Castro D Mascali F P Romano L Celona S Gammino D Lanaia R Di Giugno R Miracoli T Serafino F Di Bartolo N Gambino G Ciavola

A microwave discharge ion source (MDIS) operating at the Laboratori Nazionali del Sud of INFN, Catania has been used to compare the traditional electron cyclotron resonance (ECR) heating with an innovative mechanisms of plasma ignition based on the electrostatic Bernstein waves (EBW). EBW are obtained via the inner plasma electromagnetic-to-electrostatic wave conversion and they are absorbed by...

Journal: :Journal of cosmetic and laser therapy : official publication of the European Society for Laser Dermatology 2010
Elman Monica

Periorbital rhytids are often the first signs of aging skin for which young patients seek a non-invasive, no downtime treatment. Recently, several skin-tightening modalities based on deep dermal heating with various energy sources, such as monopolar and bipolar radiofrequency, as well as laser and broadband infrared light sources, have been introduced to treat mild wrinkles and skin laxity. Thi...

2009
S. D. Anghel T. Frentiu

This paper attempts to give a short overview of atmospheric pressure plasmas generated in very non-uniform radiofrequency electric fields. All these forms of gas discharges have a common characteristic: they are generated based on the possibility to obtain very high voltages in resonant series RLC circuits. The paper presents both the radiofrequency generators designed in this aim and some appl...

Journal: :Revista espanola de cardiologia 2003
Esteban González-Torrecilla Angel Arenal Silvia del Castillo Raquel Yotti Carlos Maroto Jesús Almendral

Automatic junctional tachycardias are rare supraventricular tachyarrhythmias observed mainly in infants and children. This arrhythmia has a high mortality rate. We report the case of a 22-month-old infant in which the electrophysiological study disclosed an incessant junctional tachycardia originating from an automatic focus located in the His bundle region. Radiofrequency pulse delivery to the...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید