منابع مشابه
Neutron Contamination Unexpected Dose in Varian LINAC
Introduction: Neutron contamination is very harmful for the patients receiving radiation therapy due to the high relative biological effect of neutrons. Medical linear accelerators head are made up of materials with high atomic numbers, and High-energy photons interaction with heavy materials can produce neutron contamination. In this study, neutron equivalent dose, neutron spe...
متن کاملUnexpected
The day dawned; he came to the ward, With son and wife, and daughter to be The harried young intern Gave an uninterested look “Routine admission, nothing much” “BP normal, pulse regular, heart in dual rhythm” “DT form fi lled, theatre list made” Anaesthetist came for the premed “Healthy gentleman, nothing to worry” “Is there a slight murmur?” “No, can’t be, the HO would have heard” Surgery goes...
متن کاملDiscovering the unexpected.
Visualization has been the cornerstone of scientific progress throughout history. Much of modern physics is a result of the superior abstract visualization abilities of a few brilliant men. New-ton visualized the effect of gravitational force fields in three dimensional space acting on the center of mass. And Einstein visualized the geometric effects of objects in relative and uniform accelerat...
متن کاملExpect the unexpected.
It's a cycle that repeats itself every few years or so. When a particular industry or geographic area posts impressive gains, investors jump in, expecting the gains to continue. When the sector or area cools down – as it inevitably does – investors are shocked and dismayed. For you, the advisor, this is a dangerous game. As a professional, you know that markets move in cycles, and over time, pe...
متن کاملDealing with the Unexpected
Typically, we think of both artificial and natural computing devices as following rules that allow them to alter their behaviour (output) according to their environment (input). This approach works well when the environment and goals are well defined and regular. However, 1) the search time for appropriate solutions quickly becomes intractable when the input is not fairly regular, and 2) respon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Blue Jay
سال: 1954
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay1532