منابع مشابه
Chemical effects on stratospheric water
The impact of anthropogenic chlorine, stratospheric ozone change and chemical feedbacks on stratospheric water T. Röckmann, J.-U. Grooß, and R. Müller Max-Planck-Institut für Kernphysik, Bereich Atmosphärenphysik, 69117 Heidelberg, Germany Institut für Chemie und Dynamik der Geosphäre, Forschungszentrum Jülich, 52425 Jülich, Germany Received: 17 December 2003 – Accepted: 3 February 2004 – Publi...
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In this study, short-term experiments were conducted with different configurations of membrane hybrid systems to treat biological treated sewage effluent containing refractory organic pollutants: (i) submerged hollow fiber microfiltration (SMF) alone; (ii) spiral flocculator (SF)-SMF without settling; (iii) SF-PAC-SMF without settling and (iv) SMF with magnetic ion exchange resin MIEX pretreatm...
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A brief perspective of the development of the density functional theory of chemical reactivity since the identification of the chemical potential with the electronegativity in 1978 is presented. The reactivity concepts are examined together with the chemical principles associated with them. Then, the interaction energy between a nucleophile and an electrophile is analyzed in order to illustrate...
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A suitable method to functionalize the surface of polyethylene terephthalate (PET) consists in the chemical treatment with different amines such as triethylenetetramine (TETA), or tetraethylenepentamine (TEPA). The paper describes the influence of PET surface amination on the mechanical and water-sorption properties. Superficial chemical treatment involves micro-structural changes such as molec...
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ژورنال
عنوان ژورنال: Lumat: International Journal of Math, Science and Technology Education
سال: 2013
ISSN: 2323-7112
DOI: 10.31129/lumat.v1i1.1127