974 resultados para Z-R relation
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A history of Damietta, Egypt.
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Lithographed.
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lil-Shaykh Qāsim.
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Title from f. 1r.
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Copy completed in the hand of Muḥammad Abū al-Saʻūd al-Jamāl al-Anṣārī, most probably in 918 [1512].
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Paginated 1-5 in pencil in Arabic numerals.
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With: Kitāb al-Talkhīṣ min mīzān al-kalimāt al-jafrīyah wa-ḥawādith al-sinīn al-hijrīyah.
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Copy completed in the hand of Jaʻfar Bīk ibn Farrukh Bīk on 18 Dhū al-Qaʻdah 1097 [October 6, 1686] in Akbarabad.
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In this short review, we provide some new insights into the material synthesis and characterization of modern multi-component superconducting oxides. Two different approaches such as the high-pressure, high-temperature method and ceramic combinatorial chemistry will be reported with application to several typical examples. First, we highlight the key role of the extreme conditions in the growth of Fe-based superconductors, where a careful control of the composition-structure relation is vital for understanding the microscopic physics. The availability of high-quality LnFeAsO (Ln = lanthanide) single crystals with substitution of O by F, Sm by Th, Fe by Co, and As by P allowed us to measure intrinsic and anisotropic superconducting properties such as Hc2, Jc. Furthermore, we demonstrate that combinatorial ceramic chemistry is an efficient way to search for new superconducting compounds. A single-sample synthesis concept based on multi-element ceramic mixtures can produce a variety of local products. Such a system needs local probe analyses and separation techniques to identify compounds of interest. We present the results obtained from random mixtures of Ca, Sr, Ba, La, Zr, Pb, Tl, Y, Bi, and Cu oxides reacted at different conditions. By adding Zr but removing Tl, Y, and Bi, the bulk state superconductivity got enhanced up to about 122 K.
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Calculated and measured estimations of biomass of small (<3 mm), large (3-30 mm), and total zooplankton were verified (compared). These integral parameters of epipelagic communities were estimated by two methods. We used previously obtained regression equations, which correlate these parameters with water transparency. Measured values of aforesaid parameters were compared with their mean values in waters of different productivity estimated from NASA satellite maps. We compared data collected at fifteen stations in September-December in regions of different productivity in the North Atlantic. In warm regions (to the south of 40°N) measured and calculated values coincide well. In boreal regions in autumn bulk of mesozooplankton descends to deep layers due to seasonal migrations; hence correlation between measured and calculated values is disrupted. It is evident that correlation between water transparency and mesozooplankton biomass (integral index of water productivity) obtained before should be corrected for seasonal variations.
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Signatures: vol. 1: )(⁶ A-Z⁶ 2A-2P⁶ 2Q⁴; vol. 2: )(² A-Z⁶ 2A-2Z⁶ 3A-3C⁶ 3D⁸ (3D₈ blank).
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Includes index.
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Federal Highway Administration, Washington, D.C.
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Federal Highway Administration, Washington, D.C.
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Federal Highway Administration, Washington, D.C.