منابع مشابه
Statistical Parsimony Networks and Species Assemblages in Cephalotrichid Nemerteans (Nemertea)
BACKGROUND It has been suggested that statistical parsimony network analysis could be used to get an indication of species represented in a set of nucleotide data, and the approach has been used to discuss species boundaries in some taxa. METHODOLOGY/PRINCIPAL FINDINGS Based on 635 base pairs of the mitochondrial protein-coding gene cytochrome c oxidase I (COI), we analyzed 152 nemertean spec...
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the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
15 صفحه اولStylet ( Vestigial Shell )
5 Sílvia Lourenço, Ana Moreno, Luís Narciso, João Pereira, Rui Rosa, Ángel F. González 6 Centro de Oceanografia, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de 7 Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal 8 Departamento do Mar e Recursos Marinhos, Instituto Português do Mar e da Atmosfera, I.P.Avenida de 9 Brasília, 1449-006, Lisboa, Portugal. 10...
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abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
CT-Compatible Medical Drilling Stylet
This paper describes the design of a compact, lightweight CT-compatible, drill-press that is designed to be used in either a hand-held or stand-alone mode to assist with percutaneous bone based interventions. Previous medical drilling tools that have been developed have a metal structure and typically have one actuator for advancing the drill (feed) and another for rotating it (speed). After de...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1982
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1540991