4 research outputs found

    A study in college students attitudes towards advertisement to the mobile phone

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    This essay presents a survey that was conducted on 52 college students regarding their opinions on advertisement received to the mobile phone. The questionnaire survey focused on what college students think of advertising to the mobile phone and what attitude they have towards it. The thoughts behind this study are that advertisement to the mobile phones is something that is getting more popular when the mobile phone is getting more advanced. The result of the study showed that college students are not that interested in receiving advertisement to their mobile phones. Several of the college students that participated in the study already get advertisement to their mobile phones, advertisement that they don't want because it doesn't reflect their interests. The study showed that if the advertisement sent to the respondents was to get more customized to their personal interest they might consider receiving it

    Cu(II), Ni(II) and Zn(II) mononuclear building blocks based on new polynucleating azomethine ligand : Synthesis and characterization

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    Five new mononuclear complexes formed by the polynucleating ligand 2-[1-(3,5-dimethyl)pyrazolyl]-2-hydroxyimino-Nâ€Č-[1-(2-pyridyl)ethylidene]acetohydrazide (HL): [Ni(L)(HL)]ClO4·2CH3OH (1), [Ni(L)2]·CH3OH (2), [Zn(L)(HL)]ClO4·2CH3OH (3), [Zn(L)2]·CH3OH (4) and [Cu(L)2]·CH3OH (5) were synthesized and characterized by elemental analysis, mass-spectrometry, IR-spectroscopy and X-ray analysis. The complexes reveal distorted octahedral N4O2 coordination arrangement formed by both protonated and deprotonated (1, 3) or two deprotonated ligand molecules (2, 4, 5). The presence of non-coordinated oxime and pyrazole groups resulted in the formation of extensive systems of hydrogen bonds in the crystal packing of 1–5. Potentiometric titrations, ESI-MS and spectrophotometric studies of complex formation in MeOH/H2O solutions indicated the presence of mono- and polynuclear complexes with Cu(II), Ni(II) and Zn(II) ions. The solution studies carried out for an excess of Cu(II) over HL ligand (2:1 and 3:2 M ratio) indicated also the formation of polynuclear Cu3L2Hx species, with an involvement of additional nitrogen donors in copper coordination. In binuclear complex [Cu2(L)2(DMF)2](ClO4)2·DMF(6) obtained in solid state, the Cu(II) coordination, analogous to the one in 1–5, was supported by pyrazole N atom.peerReviewe
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