Dielectric properties of ground beef as affected by the variation fat content (73/27, 80/20, and 85/15 lean/fat) temperature (0–90 °C) were determined using a parallel plate LCR meter liquid test fixture at radiofrequency (RF) 27.12 MHz. The values dielectric constant (??) loss factor (?'') significantly increased with ( p < 0.05) whereas penetration depth (d p) decreased up to respectiv...

Localized hyperthermia therapy by high-energy radio-frequency waves was evaluated in malignant and adjacent normal tissue of 30 patients with 10 types of cancer. Hyperthermia was delivered to superficial and deep visceral cancers in awake patients who had refractory disease. Histological and clinical responses were recorded serially. Toxicity tests in dogs, sheep, and pigs showed that progressi...

In this paper we study the effect of artificial HF heating on cosmic radio noise absorption in the D-region ionosphere. The effect has earlier been studied theoretically in idealised cases and without experimental verification. Here we present a 3-dimensional modelling of the effect, taking into account the directivity patterns of the vertical beam of the EISCAT Heater at Tromsø, Norway, and th...

rfid technology has great potential to improve the benefits of supply chain management. auto- manufacturing is a competitive industry that every player of it needs great operation efficiency to gain competitive advantage to survive. rfid systems are good enhancements to supply chain processes, therefore it's obvious that every industry has to pay great attention to this it solution, and in this...

In this paper, the effects of UHF electromagnetic fields produced by a RFID reader on a blood bag are evaluated numerically in several configurations. The results of the simulation, field level and distribution, specific absorption rate (SAR), and heating time show that an exposure to a typical reader field leads to a temperature increase smaller than 0.1 C and to a SAR smaller than 1 W/kg. As ...

Chondrocytes are known to be thermal-sensitive, insofar as excessive temperatures may cause cellular death and promote the degeneration of articular cartilage (3). Therefore, it is imperative to determine and use the lowest possible settings of RF energy that will produce the desired effects (1-3). Similar to other studies conducted to characterize temperature changes for tissues treated using ...