نتایج جستجو برای: brag peak
تعداد نتایج: 141660 فیلتر نتایج به سال:
background: hadron therapy for malignant tumor is becoming increasingly popular. there are many factors which effect on implementation of a proper treatment planning. the purpose of this work is to investigate the inhomogeneity effects as affecting factor on proton range, full width at half maximum (fwhm) and 20% position of penumbra (p20) by mcnpx code. materials and methods: an inhomogeneous ...
In this paper, a practical simulation method for optimizing of x-ray reflection of nano-multilayer mirrors in three different edge energies: Cr-Kα, Co-Kα, and Ti-Kα is discussed in order to obtain the most reflection based on quarter-wave thickness method (QW). In this method, the reflected x-ray will have a constructive interference, and a peak, called Brag peak, will appear in reflection curv...
Introdution: Today, the Advantages of radiation therapy by charged particles is indicated for the treatment of cancerous. During the passing of proton beam in the body tissues, secondary particles produce, which penetrate to the body healthy tissues and cause damage. The aim of this research was calculating the Spread out Bragg Peak for covering the breast cancer and investigating arrived dose ...
One of the lesser admitted realities academia is need to promote one's successes in order curate a reputation increase chances funding, promotion, and publication. This has led unfortunate emergence well-intentioned self-publicizing academics. Here, Lenardic, Seales, Levander express their take on rise (and effect) "humble brag."
Information Technology techniques; such as case-based reasoning, Adaptive search techniques and constraint modelling are being commercially implemented within dynamic support structures to aid decision making. Case-Based Reasoning is a relatively 'new research paradigm' to both problem solving and learning; in that we have not reached the kind of 'commanding heights' stage yet where we are able...
Light absorption at the boundary of indirect-band-gap and direct-forbidden gap semiconductors is analyzed. It is found that the possibility of the electron momentum nonconservation at the interface leads to essential enhancement of absorption in porous and microcrystalline semiconductors. The effect is more pronounced at a rough boundary due to enlargement of the share of the interface atoms. T...
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