4,108 research outputs found

    Organizational team building culture among teachers in Gombak Selangor

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    This study examined the organizational team building culture among teachers in Gombak, Selangor. Aspects that were being studied were the teachers’ perception on the elements of team building, the relation between team building factors and motivational factors and differences between gender and the eight factors of team building which were goals, priorities, roles and responsibilities, self-awareness, leadership, group dynamics, communications and environment. The study employed a survey method for collecting data from 100 purposively selected teachers from 10 government aided secondary schools

    Synthesis and Chain-Length Dependence of the Electronic Properties of π-Conjugated Dithieno[3,2-b:2′,3′-d]pyrrole (DTP) Oligomers

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    N-(2-ethylhexyl)dithieno[3,2-b:2′,3′-d]pyrrole has been prepared and its dimer and trimer have been synthesized by Stille coupling. The electrochemical and optical properties of these compounds have been investigated by cyclic voltammetry, UV–Vis, and fluorescence emission spectroscopies. The obtained results show that these strongly luminescent compounds can be oxidized into stable cation radical and dication state. The analysis of the chain length dependence of the electronic properties indicates that the predicted bandgap of an ideal polymer chain should be considerably smaller than the experimental results reported until now. This difference is discussed in terms of reactivity of the dithieno[3,2-b:2′,3′-d]pyrrole (DTP) unit

    Nouveaux oligomères et polymères conjugués

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    New 3D π-Conjugated Architectures for Electrogenerated Microporous Polymers

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    Date du colloque : 10/2011</p

    New Electropolymerizable 3D π-Conjugated Architectures towards Microporous Networks

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    Date du colloque : 06/2011</p

    Nouveaux systèmes pi-conjugués fonctionnels

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    Nouveaux polymères conducteurs fonctionnalisés

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    Nouveaux polymères conducteurs électrogénérés

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    Architecture in the Islamic Civilization: Muslim Building or Islamic Architecture

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    The main problem of the theory in the arena of islamic architecture is affected by some of its Westernthoughts, and stereotyping the islamic architecture according to Western thoughts; this leads to the breakdownof the foundations in the islamic architecture. It is a myth that islamic architecture is subjected to theinfluence from foreign architectures. This paper will highlight the dialectical concept of islamic architecture ormuslim buildings and the areas of recognition in islamic architecture. It will also widen the knowledge in thecharacteristics of each point in time according to the stages of islamic architecture from the prophetic agemoving through the architecture outside the city of Medina, the Caliphs, the Umayyad, Abbasid, andarchitectural models by spatial and time periods, taking Iraq as the example to explain how the Islam influentson architecture and vice versa

    Negative Differential Resistance, Memory and Reconfigurable Logic Functions based on Monolayer Devices derived from Gold Nanoparticles Functionalized with Electro-polymerizable Thiophene-EDOT Units

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    We report on hybrid memristive devices made of a network of gold nanoparticles (10 nm diameter) functionalized by tailored 3,4(ethylenedioxy)thiophene (TEDOT) molecules, deposited between two planar electrodes with nanometer and micrometer gaps (100 nm to 10 um apart), and electropolymerized in situ to form a monolayer film of conjugated polymer with embedded gold nanoparticles (AuNPs). Electrical properties of these films exhibit two interesting behaviors: (i) a NDR (negative differential resistance) behavior with a peak/valley ratio up to 17, and (ii) a memory behavior with an ON/OFF current ratio of about 1E3 to 1E4. A careful study of the switching dynamics and programming voltage window is conducted demonstrating a non-volatile memory. The data retention of the ON and OFF states is stable (tested up to 24h), well controlled by the voltage and preserved when repeating the switching cycles (800 in this study). We demonstrate reconfigurable Boolean functions in multiterminal connected NP molecule devices.Comment: Full manuscript, figures and supporting information, J. Phys. Chem. C, on line, asap (2017
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