Re-Exposure of Tapes at High Temperature and Pressure in theLycopodium ClavatumSpore Exine
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CHEMICAL REACTION AT HIGH TEMPERATURE AND HIGH PRESSURE VI Polymorphic Transition in ZnP, at High Temperature and High Pressure
:1 new pressure-induced modification of zincdiphosphide, ZnP2, has been prepared by the di reel union o(zinc with phosphorus and also through the polymorphic transitions of both monoclinic and tetragonal ZnP2. The application of pressures above 20 kb combined with temperatures above 150'C is required for [be synthesis. The new modification of ZnP2 has a pseuda•cuhic cps[al symmetry with a latti...
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Santamaria-Perez et al.1 attempt to reproduce our CO2–SiO2 solid solution2. In their study1, mixtures of CO2 and SiO2 similar to those studied in our work2 were indirectly laser heated up to 2,400K and 50GPa by using Re as an internal heater, and a CO2–SiO2 solid solution was not obtained. Instead, the only temperature quenched crystalline phases identified by X-ray diffraction were: known poly...
متن کاملCorrespondence: Strongly-driven Re+CO2 redox reaction at high-pressure and high-temperature
The discovery of non-molecular carbon dioxide phases under high pressure and temperature conditions with carbon tetrahedrally coordinated by oxygen atoms1–3 has shown that the high-density phase diagram of this important substance presents remarkable analogies with those of other group IV oxides. These results have triggered a variety of experimental studies aiming to explore the high-pressure ...
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در این بررسی ابتدا به بررسی ماهیت توزیع خسارات پرداخته میشود و از روش نظریه مقادیر نهایی برای بدست آوردن برآورد ارزش در معرض خطر برای خسارات روزانه بیمه مسئولیت شرکت بیمه ایران استفاده میشود. سپس کارایی نظریه مقدار نهایی در برآورد ارزش در معرض خطر با کارایی سایر روشهای واریانس ، کواریانس و روش شبیه سازی تاریخی مورد مقایسه قرار میگیرد. نتایج این بررسی نشان میدهند که توزیع ،garch شناخته شده مدل...
15 صفحه اولthe relationship between academic self-concept and academic achievement in english and general subjects of the students of high school
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ژورنال
عنوان ژورنال: Grana
سال: 1974
ISSN: 0017-3134,1651-2049
DOI: 10.1080/00173137409429904