منابع مشابه
Rare Earth Nitrate Complexes with an ONO Schiff Base Ligand: Spectral, Thermal, Luminescence and Biological Studies
Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra sug...
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This paper summarizes three companion ComputerAssisted Instruction (CAI) case studies in a series for the last several years. These studies were designed to investigate a various of impacts of an Earth Science Computer-Assisted Tutorial (ESCAT), developed by the research team, on students' Earth science achievement and their attitudes toward Earth science in senior high schools. The pretest-pos...
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I present investigations of Earth dynamics with the superconducting gravimeter GWR T020 at Metsähovi from 1994 to 2005. As a necessary background, the history and key technical details of the installation are given. Then a new data acquisition system (DAS) developed by the author is described. It has proved reliable and accurate. A pre-requisite for the study of weak phenomena is the removal of...
متن کاملMicrobiological Studies on Sambhar Lake (Salt of Earth) Rajasthan, India
Sambhar Lake (Salt of Earth), the largest inland saline and alkaline lake of India is situated in the state of Rajasthan, and is referred in the epic Mahabharata. When full, it covers an area of 230 sq km. It lays some 60 km west of Jaipur, adjacent to the Salt Lake City. Flocks of flamingoes are attracted by the delicious spirulina algae that flourish when the water reaches a medium degree of ...
متن کاملIntroduction. Progress in Earth science and climate studies.
In this introductory paper, I review the 'visions of the future' articles prepared by top young scientists for the second of the two Christmas 2008 Triennial Issues of Phil. Trans. R. Soc.A, devoted respectively to astronomy and Earth science. Topics covered in the Earth science issue include: trace gases in the atmosphere; dynamics of the Antarctic circumpolar current; a study of the boundary ...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/258029a0