Objective: Potato is the fourth important food crop after wheat, rice and maize. Shrinkage  of  food  materials  has  a negative  consequence  on  the  quality  of  the dehydrated product. The main objective pursued in this paper is to investigate the shrinkage amount of potato slices during drying process using vacuum-infrared method. Methods: In this work, the effect of the infrared radiation...

Malignant mesothelioma is a very serious disease. The contemporary treatment in operable cases involves a combination of neoadjuvant chemotherapy, extrapleural pneumonectomy, and postoperative radical radiation therapy. In these patients, intensity modulated radiation therapy (IMRT) techniques are used to achieve a better therapeutic ratio [1–5]. However, most cases are inoperable due to variou...

Introduction The film boiling reactor (FIBOR) is analyzed to show the influence of radiation across the vapor film on product yields. The geometry is that of a horizontal, catalyst-coated, tube suspended in a pool of saturated methanol at atmospheric pressure. The vapor film surrounding the heated tube is the reacting volume and surface reactions are treated with an Arrhenius form of the reacti...

Purpose or Objective: Intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) are widely used in the treatment of advanced stage non-small cell lung cancer (NSCLC). These techniques deliver conformal dose distributions at the cost of increased target dose heterogeneity (particularly IMRT) and larger volumes of surrounding healthy tissues receiving low doses (par...

PURPOSE Radiation therapy targeting axilla and groin lymph nodes improves regional disease control in locally advanced and high-risk skin cancers. However, trials generally used conventional two-dimensional radiotherapy (2D-RT), contributing towards relatively high rates of side effects from treatment. The goal of this study is to determine if three-dimensional conformal radiation therapy (3D-C...

Imaging dose in radiation therapy has traditionally been ignored due to its low magnitude and frequency in comparison to therapeutic dose used to treat patients. The advent of modern, volumetric, imaging modalities, often as an integral part of linear accelerators, has facilitated the implementation of image-guided radiation therapy (IGRT), which is often accomplished by daily imaging of patien...

Ultra -high molecular weight polyethylene (UHMWPE) is the current material of choice for bearing surface applications in total joint arthroplasty. In an effort to enhance the wear properties of the material many companies have recently resorted to electron beam and gamma irradiation of the components prior to the machining. It is of considerable interest to accurately determine the dose absorbe...

Introduction: Germinomas are malignant intracranial germ cell tumors, usually found in pineal region. These tumors are exquisitely sensitive to radiation. Whole ventricle radiation (RT) with a boost field to the primary tumor is the standard treatment for localized germinomas. RapidArc radiotherapy is considered an excellent technological advance that shows great potential for producing highly ...

The achievement of large volumetric power losses (dissipation) in the Alcator C-Mod divertor region is demonstrated in two operational modes: radiative divertor and detached divertor. During radiative divertor operation, the fraction of SOL power lost by radiation is P R/PSOL0.8 with single null plasmas, n e < 2x10 20 m-3 and I < 1 MA. These plasmas sometimes have very high recycling, with nedi...

BACKGROUND Intensity-modulated radiation therapy (IMRT) uses solid compensators or multileaf collimators to modulate the intensity of radiation in each field, delivering highly conformal dose distributions. This technique allows treating volumes with concave shapes when the target is close to a critical structure. The movement of multileaf collimator under computer control can modulate the dose...