On the Variable 10 Sagittae 19h49m25s + 16°15′.4 (1855)
نویسندگان
چکیده
منابع مشابه
1855 On
Wallace, A. R. 1855. On the law which has regulated the introduction of new species.
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قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولC1ob06688a 1847..1855 ++
The free energies of activation for the aryl–aryl rotation of 17 biphenyl derivatives, bearing a heavy heteroatom (S, Se, Te, P, Si, Sn) as ortho substituent, have been measured by variable temperature NMR. These numbers, so called B values, represent a meaningful measure of the steric hindrance exerted by the selected substituents. DFT computations match quite satisfactorily the experimental b...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1886
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18861151203