منابع مشابه
Growth of CsI(Tl) crystals doped with Ca and Tm and investigation of its scintillation characteristics
In this work, the growth of CsI(Tl) crystals as gamma detector was performed using vertical Bridgman method with Ca and Tm co-dopants. For evaluation of the growth crystals, X-Ray Diffraction (XRD), photoluminescence and thermoluminescence spectra as well as recorded gamma spectra were employed. In addition, the scintillation properties including energy resolution, scintillation decay time, abs...
متن کاملEnhancement in crystalline perfection and optical properties of Benzophenone single crystals: A remarkable effect of liquid crystals
The remarkable enhancement in crystalline perfection of Benzophenone crystals, induced by the presence of liquid crystals in melt during the growth, been investigated. The crystal structure was confirmed by powder X-ray diffraction. Nuclear magnetic resonance analyses depicted that liquid crystal molecules did not incorporate in the lattice of grown crystals. The high resolution X-ray diffracto...
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مطالعات قبلی بازار بیمه را به صورت کلی در نظر می گرفتند اما در این مطالعه صنعت بیمه به عنوان متغیر مستفل به بیمه های زندگی و غیر زندگی شکسته شده و هم چنین بیمه های زندگی به رشته های مختلف بیمه ای که در بازار بیمه ایران سهم قابل توجهی دارند تقسیم میشود. با استفاده از روشهای اقتصاد سنجی داده های برای دوره های 48-89 از مراکز ملی داده جمع آوری شد سپس با تخمین مدل خود بازگشتی برداری همراه با تعدادی ...
15 صفحه اولMatching X-ray beam and detector properties to protein crystals of different perfection
An analysis is given of the effect of different beam and detector parameters on the sharpness of recorded diffraction features for macromolecular crystals of different quality. The crystal quality parameters include crystal strain, crystal or mosaic block size and mosaic block misorientation. Calculations are given for instrument parameters such as angular resolution of the detector, beam diver...
متن کاملGrowth and Morphology of Crystals*
This issue of “FORMA” presents an English translation of Haeckel’s book “Crystal Souls”, with Alan Mackay’s introduction and detailed annotations. The tanslation was accomplished by Alan, my respectable old friend since 1950’s. When this book published in 1917, Haeckel tried to attract people to beautifully organized variety of forms exhibited by radiolaria and snow crystals, and the close simi...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1959
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed036p422.3