To gain a better understanding and control of the Selective Laser Sintering (SLS) process, more fundamental and modeling work is needed. A simple analytical ray-tracing model has been developed to simulate the energy absorption and penetration in SLS. The model is applied to FeCu and WC-Co powder mixtures, irradiated by Nd-YAG or CO2 laser. It gives an evaluation of the total energy incoupling ...

In present study, a mathematical model of the vehicle–floating slab track (FST) interaction is established to investigate the coupled behaviour of vehicle–track system. The FST is modelled as the double Euler -Bernoulli beam including the rail and slab. The railway vehicle is simplified as a multi-rigid-body model. The wheel–rail interface is treated using a nonlinear Hertzian contact model, co...

Background: Radiotherapy (RT) is recommended to all patients undergoing Breast Conserving Surgery (BCS). Two strategies can be applied to irradiation, External Beam RT (EBRT) in addition, Intraoperative Radiation Therapy (IORT). The aim of this study was to introduce a protein biomarker panel related to molecular function of IORT. Materials and Methods: Six Breast Cancer (BC) patients as a pilo...

109 2:50 PM Maintaining Consistent Conditions over a Wide Range of Material Deposition Rates in Beam-Based Additive Manufacturing: Jack Beuth1; Shane Esola1; Raymond Walker2; 1Carnegie Mellon University; 2Keystone Synergistic Enterprises Signifi cant advances have been made in the development of laser and electron beam-based freeform fabrication processes using powder injection, powder bed or w...

A 34-year-old female developed bilateral radiation retinopathy three months after external beam radiotherapy for pituitary adenoma. The clinical symptoms, fundus abnormalities, and microvascular pathology noted on fluorescein angiography resolved spontaneously over a few months. The most dramatic aspect was the progressive improvement and partial reperfusion of the retinal capillary bed.

We describe design and testing of an induction cell with modulator for the Relativistic Klystron Two-Beam Accelerator (RK-TBA) concept, an option for the power source for the Next Linear Collider (NLC). FM Technologies has designed and built a prototype induction accelerator, which we call a re-accelerator, for a joint LLNL/LBNL TBA technology test-bed experiment.

At Brookhaven, an Electron Beam Ion Source (EBIS) is now operational. This source is being used as a test bed to answer questions relevant to the eventual design of an EBIS-based heavy ion injector for RHIC. Such a source can easily produce ions such as Au, but the challenge lies in reaching intensities of interest for RHIC (3 x 10 particles/pulse). The source studies are planned to address iss...

introduction:the external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. we intended to study the change of these abnormalities at short and long term post radiotherapy follow up. methods: twenty patients with left and 20 patients with right breast cancer comprised the exposed and control groups, respectively. the...

Introduction:The external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. We intended to study the change of these abnormalities at short and long term post radiotherapy follow up. Methods: Twenty patients with left and 20 patients with right breast cancer comprised the exposed an...