Insects and pests constitute a major threat to food supplies all over the world. Some estimates put the loss of food grains because of infestation to about 40% of the world production. Contemporary disinfestation methods are chemical fumigation, ionizing radiation, controlled atmosphere, conventional hot air treatment, and dielectric heating, that is, radio frequency and microwave energy, and s...

The increasing use of highly integrated circuits in portable electronics, which may operate for relatively short periods of time, has opened the possibility of utilizing heat storage to maintain device temperatures below reliability limits. The present study considers a strategy in which the power dissipation of a device is periodically reduced and increased in order to decrease its peak temper...

A simple procedure for graphite-furnace atomic absorption analysis of cadmium in urine, based on the use of a temperature-controlled heating unit, is described. The temperature of the carbon rod is measured by resistance and controlled by electronic feedback. We studied the influence of various heating times and temperatures of ashing and atomization, as well as suitable diluents. Urine samples...

The buried-oxide in SOI MOSFET inhibits heat dissipation in the Si film and leads to increase in transistor temperature. This paper reports a simple and accurate characterization method for the self-heating effect (SHE) in SOI MOSFET. The ac output conductance at a chosen bias point is measured at several frequencies to determine the thermal resistance ( ) and thermal capacitance ( ) associated...

Introduction: Induction heating is the release of thermal energy within a body due to the resistance of that material to a current passing through it. This mechanism is also called Joule heating or Ohmic dissipation. Induction heating has been proposed as a process that could have caused metamorphism and melting in planetesimals in the early solar system [1]. Although other theories are more wi...

In this work the effects of WC concentration on abrasive wear behavior by thermally sprayed WC coating was evaluated using three body abrasive wear tester. A different combination of WC and NI coatings were deposited on steel substrates by flame spraying using powder with different WC concentrations (0 %, 12.5 %, 25 %, and 50 %). Flame torch was used for heating and coating of process. Microstr...

Microbiology safety cabinet disinfection procedures using formaldehyde have been tested. Tubercle bacilli were killed by concentrations of formaldehyde obtained by heating commercial formalin irrespective of whether the bacilli were in the cabinet free space or above the prefilters. However, Bacillus stearothermophilus spore papers for for the testing of low temperature steam/formaldehyde steri...

0017-9310/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.ijheatmasstransfer.2010.04.034 * Corresponding author. Tel.: +82 2 2123 5812; fax E-mail address: [email protected] (Y.H. Jang). Greenwood’s approximation for the thermal resistance of a cluster of microcontacts is used recursively to estimate the thermal resistance due to a fractal array of circular contact areas motivated by Archa...

The performance of carbon nanotube network (CNN) devices is usually limited by the high resistance of individual nanotube junctions (NJs). We present a novel method to reduce this resistance through a nanoscale chemical vapor deposition (CVD) process. By passing current through the devices in the presence of a gaseous CVD precursor, localized nanoscale Joule heating induced at the NJs stimulate...

The decay resistance of oil-heat treated aspen wood (Populus tremula l.) against white rot fungi (Coriolus versicolor) and brown rot fungi (Coniophora puteana) was investigated. Three different temperature stages and two time levels for oil heat treatment for the selection of optimum conditions were determined. Linseed oil as a heating medium was used. The mass loss of treated samples that were...