نتایج جستجو برای: دزیمتر c 3o2α al 500 tld

تعداد نتایج: 1502593  

بیگ محمدی, نرگس, ملکی, محمدهادی,

 TiO2-SnO2 thin films were coated on glass and Al / glass substrates by electron gun method. In coating process, the vacuum was 1.5×10-5 torr. Then, films were annealed at 450, 500 and 550 ˚ C. The crystallographic structure and film morphology were investigated by means of XRD and SEM. The electrical (I-V) and optical properties were studied by the two point props system and UV/Vis/NIR spectro...

Journal: :Medical physics 2012
M Lawless S Junell C Hammer L DeWerd

PURPOSE Thermoluminescent dosimeters are used routinely for dosimetric measurements of photon and electron fields. However, no work has been published characterizing TLDs for use in combined photon and electron fields. This work investigates the response of TLD-100 (LiF:Mg,Ti) in mixed fields of photon and electron beam qualities. METHODS TLDs were irradiated in a 6 MV photon beam, 6 MeV elec...

2012
S. S. Hosseini M. Rahimian

TLD is a tank filled with water and serves as a dynamic vibration absorber for passive control of structures. This paper addresses the comparisons of TLD performances corresponding to different tank geometries including rectangular and conical shapes. Due to the importance of water and tank weight as a load on top of a building, volume is considered to be a constant parameter in this study. Fir...

M. Azadi, M. Zolfaghari S. Rezanezhad

Piston aluminum alloys have different intermetallic phases, such as Cu3Al, Mg2Si ,and AlNi phases. The morphology and the distribution of such phases have important roles on mechanical properties of the piston material. Therefore, in this research, various ageing heat treatments on the mentioned material were done and the microstructural feature and the hardness were studi...

Journal: :Zeitschrift fur Naturforschung. Section C, Biosciences 1980
S I Ahmad

When grown in thymine-free minimal synthetic medium, thyA recA mutants of Escherichia coli K12 were comparatively more resistant and thyA recBC mutants more sensitive to thymineless death (TLD) than their respective parent strains. No excessive numbers of single-strand breaks were observed in the DNA of the recBC mutant strain starved for thymine, hence the hypersensitivity for TLD in this stra...

Journal: :IEEE Transactions on Electron Devices 2015

یکی از مهمترین ماده های معادل بافت که امروزه کاربرد گسترده ای در دزیمتری ترمولومینسانس دارد، LiF:Mg,Cu,P است. حساسیت این ماده با غلظت آلاینده ها و کم یا اضافه کردن هر یک از آنها تغییر می کند. لذا در این مطالعه، ماده ترمولومینسانس LiF با آلاینده های منیزیم، مس و فسفر به صورت پودر تهیه شد و حساسیت آن به دمای بازپخت در گستره °C400-240 به مدت 10 دقیقه مورد بررسی قرار گرفت. مشخص شد که با افزایش دمای...

1970
Iolo Madoc-Jones

This article explores the rationales for creating specific top level domain (TLD) names to support minority languages and cultures, focussing specifically on the case for a TLD .cy or .cym for Wales. Some background information on domain names and Wales and the Welsh language is provided. Following on from this, the way identity may be constructed is explored and the importance of TLD’s in term...

In the present study, the effect of alumina on the pore structure and hydrothermal stability of nanostructured silica was investigated. SiO2 and SiO2-15wt%Al2O3 membranes were prepared by dip coating on mesoporous γ-Al2O3 coated macroporous α-alumina support. The particle sizes of sol were increased by adding of alumina to silica...

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