نتایج جستجو برای: diamond microdosimeter

تعداد نتایج: 20991  

Rhombellanes are mathematical structures existing in various environments, in crystal or quasicrystal networks, or even in their homeomorphs, further possible becoming real molecules. Rhombellanes originate in the K2.3 complete bipartite graph, a tile found in the linear polymeric staffanes. In close analogy, a rod-like polymer derived from hexahydroxy-cyclohexane was imagined. Further, the ide...

Journal: :international journal of nanoscience and nanotechnology 2012
s. f. mahmud j. taniguchi

the price of single point diamond tools with a sharp tip is very high due to complex machining process and highly expensive machining equipments. yet, the performance is not quite satisfactory. in this paper, we have presented a very simple and cost effective machining process for the sharpening and polishing of diamond stylus using low energy reactive ion beam machining (ribm). in our method, ...

In this paper, for the first time, an analytical equation for threshold voltage computations in silicon-on-diamond MOSFET with an additional insulation layer is presented; In this structure, the first insulating layer is diamond which covered the silicon substrate and second insulating layer is SiO2 which is on the diamond and it is limited to the source and drain on both sides. Analytical solu...

Single crystals and polycrystalline diamond films of several thicknesses were deposited using oxygen/acetylene combustion flame technique. The substrate used was pure polycrystalline molybdenum subjected to mechanical polishing. Quality and microstructural characteristic of diamond produced were investigated using X-Ray diffraction, Raman Spectroscopy, Scanning and Transmission Electron Microsc...

Abolfazl Zanghaei Ahmad Mostaar, Hamid Motahhari Mahdi Ghorbani, Shahrokh Naseri

Introduction: Recent developments of radiotherapy techniques, require high accuracy detectors to determine the delivered dose in a small area. Chemical vapor deposition (CVD) or naturally growth diamond detectors which are commercially available are good candidates for this purpose. In these detectors two electrodes with high different electrical potential are deposited on both...

Artificial Intelligence (AI) techniques are used for solving the intractable engineering problems. In this study, it is aimed to study the application of artificial bee colony algorithm for predicting the performance of circular diamond saw in sawing of hard rocks. For this purpose, varieties of fourteen types of hard rocks were cut in laboratory using a cutting rig at 5 mm depth of cut, 40 cm/...

Journal: :journal of modern processes in manufacturing and production 0
vahid barahimi department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran masoud farahnakian 1department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran

surface roughness is a significant parameter which determines the efficiency of optical components. surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. it is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. in this study, a cup diamond wheel (d64) is used in grinding pr...

Journal: :ACS applied materials & interfaces 2013
Srinivasu Kunuku Kamatchi Jothiramalingam Sankaran Cheng-Yen Tsai Wen-Hao Chang Nyan-Hwa Tai Keh-Chyang Leou I-Nan Lin

We report the systematic studies on the fabrication of aligned, uniform, and highly dense diamond nanostructures from diamond films of various granular structures. Self-assembled Au nanodots are used as a mask in the self-biased reactive-ion etching (RIE) process, using an O2/CF4 process plasma. The morphology of diamond nanostructures is a close function of the initial phase composition of dia...

Journal: :research on history of medicine 0
saeid shafieioun

not all values of literary texts should be sought for in their artistic aspects . there have been many lower-ranked literary texts that have shed light on numerous scientific, historical, social, and cultural issues. although poetic views are involved while raising such issues, it needs to be taken into account that not all poets have perceived the scientific principles of the topics tackled in...

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