... www.medsci.org â2004 Ivyspring International Publisher. All rights reserved Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software Research paper Received: 2004.3.02 ... 94305, USA A A b b s s t t r r a a c c t t This work is a report on the commissioning of low energy electron beams of a medical linear accelerator for Monte Carlo dose calculation using ... calculated and measured dose distributions along seven different dimensions as described below, essentially following the recommendations of Van Dyk et al [7]. Note that each quantity represents a...
Ngày tải lên: 03/11/2012, 10:05
... factor for low energy fractures, and Norway has a high incidence of fractures related to osteoporosis compared to the rest of the world [7-10]. Furthermore, most patients with a low- energy fracture ... expect an increasing number of low- energy fractures [11,12]. These facts highlight the need to focus on the complexity of issues related to the occurrence of low energy fractures in the elderly ... understood as satisfaction with life, in low- energy fractures in hip and wrist. To our best knowledge no stud- ies have been performed with this perspective in low- energy hip and wrist fracture patients. A...
Ngày tải lên: 18/06/2014, 19:20
Báo cáo sinh học: " Low-energy structures of clusters supported on metal fcc(110) surface" doc
... change of the lowest -energy structure is much slower than that on Cu(110) with the cluster size increasing. Corresponding to the type change of the lowest -energy structure, the low- energy structures ... [2-10]. However, such studies mainly focus on the lowest -energy structures. For the structures with energy close to the lowest one, which are named low- energy structures here, investigations and discussions ... we can predict the type change of the lowest -energy structure. Still take Cu(110) as an example (ξ = 5.26), from Equation 11, the change of the lowest -energy structure from one linear chain...
Ngày tải lên: 18/06/2014, 22:20
Báo cáo hóa học: " Wettability Modification of Nanomaterials by Low-Energy Electron Flux" pptx
... nanomaterials. Experimental Setup and Methods Low- Energy Electron Treatment Technique In this work, the combination of two different techniques was used for surface energy modification: UV and low- energy electron irradiation. ... illumination and low- energy electron irradiation. UV treatment is a well-known technique for the surface modification leading to hydrophilicity enhancement of materials [19]. The method of low- energy electron ... found. Low- energy elec- tron treatment strongly modified the wettability by strengthening its hydrophobic state especially for the probing liquids with large polar components of the surface free energy...
Ngày tải lên: 22/06/2014, 00:20
Báo cáo hóa học: " Surface Morphology Evolution of GaAs by Low Energy Ion Sputtering" pdf
... evolution below 1,200 eV ion energy is inves- tigated. The sputtered surface is examined and analyzed by AFM. In the low eV energy range, no regular surface patterns are observed. Above the mid-eV energy, ... time and energy are two relative concepts. A shorter sputtering time could need higher sputtering energy to achieve the same outcome as in longer sputtering time but lower sputtering energy. Further- more, ... sputtering energy, there exists the possibility that this sputtering duration is not long enough for some low sputtering energies to initiate dot formation, or these energies are below the threshold energy. ...
Ngày tải lên: 22/06/2014, 18:20
thesis submitted for the doctoral degree of science study of nuclear reactions for astrophysics
Ngày tải lên: 09/07/2014, 08:18
Báo cáo toán học: "A complete treatment of low-energy scattering in one dimension " ppsx
Ngày tải lên: 05/08/2014, 15:21
NATIONAL NUCLEAR ENERGY SERIES doc
... the National Nuclear Energy Series is intended to be a comprehensive account of the sci- entific and technical achievements of the United States program for the development of atomic energy. It ... Manhattan Project Technical Section of the National Nuclear Energy Series embodies results of work done in the nation's wartime atomic energy program by numerous contractors, including Columbia University. The ... These now will appear as the first published volumes of the Los Alamos part of the National Nuclear Energy Series. Darol K. Froman, one of the originators of the Los Alamos Technical Series and...
Ngày tải lên: 29/03/2014, 00:20
FUTURE OF THE NUCLEAR SECURITY ENVIRONMENT IN 2015 pptx
... Collaborative pilot projects in civilian nuclear energy cooperation could include advanced safeguards; nuclear waste storage and disposition; nuclear energy safety; and analysis and development ... CPPNM. o Civilian nuclear energy cooperation. Signature of the U.S Russian 123 Agreement 68 would establish a framework agreement to enable cooperation on civilian nuclear energy. Collaborative ... of nuclear attribution based on a technical nuclear forensics capability. While recognizing the practical limits of nuclear forensics, they expect this system to help identify the origin of nuclear...
Ngày tải lên: 29/03/2014, 18:20
low frequency meandering piezoelectric vibration energy harvester
... piezoelectric energy har- vesters [17]. The electromechanical coupling is a measure of a material or system’s ability to convert mechanical energy into electrical energy or vice versa. In energy har- vesting, ... results of a compact, low- frequency, piezoelectric vibration energy harvesting device were presented. The meander- shaped piezoelectric energy harvester effectively achieves a lower resonant frequency ... vibration energy har- vesting has been studied as a power source for wireless sensor nodes. Vibration energy harvesting is converting mechanical vibration energy into useful electrical energy...
Ngày tải lên: 06/05/2014, 08:54
murray r nuclear energy intro to concepts systems applications 5th ed 2000)
... solar energy, the energy from winds, tides, or the sea motion, and heat from within the earth. Finally, we have energy from nuclear reactions, i.e., the “burning” of nuclear fuel. 1.2 Thermal Energy ... Part I BASIC CONCEPTS 1 Energy 1.1 Forces and Energy 3 1.2 Thermal Energy 5 1.3 Radiant Energy 7 1.4 The Equivalence of Matter and Energy 8 1.5 Energy and the World 9 1.6 Summary ... References for Chapter 25 416 26 Nuclear Explosions 26.1 Nuclear Power vs. Nuclear Weapons 419 26.2 Nuclear Explosives 420 26.3 The Prevention of Nuclear War 426 26.4 Nonproliferation...
Ngày tải lên: 04/06/2014, 13:17
Báo cáo hóa học: " Research Article Trade-Offs between Energy Saving and Reliability in Low Duty Cycle Wireless Sensor Networks Using a Packet Splitting Forwarding Technique" docx
... (e.g., simple chunk). Furthermore, considering the limited energy and computation capability of sensor nodes, the very low complexity of the CRT allows it to be more suitable to achieve reliability in ... represent the CRT components, and b is the energy needed to transmit a bit. More precisely, the expected energy reduction factor can be defined as follows: ERF = E SP − E CRT E SP = 1 − n c w CRT n p w . (9) It ... node, and therefore the energy that a node consumes for the transmission. The splitting procedure is achieved applying the Chi- nese Remainder Theorem (CRT) which represents a low- complexity approach...
Ngày tải lên: 21/06/2014, 11:20
Báo cáo hóa học: " Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?" potx
Ngày tải lên: 22/06/2014, 22:20