142 research outputs found

    PENERAPAN MODEL EXPLICIT INSTRUCTION PADA PEMBELAJARAN SENI TARI UNTUK MENINGKATKAN MINAT BELAJAR SISWA.

    Get PDF
    Judul penelitian ini adalah Penerapan Model Explicit Instruction Pada Pembelajaran Seni Tari Untuk Meningkatkan Minat Belajar Siswa (Studi Eksperimen Pada Siswa Kelas VIII-F SMP Negeri 3 Lembang). Permasalahan yang diangkat ialah bagaimana menumbuhkan minat belajar siswa melalui pembelajaran tari dengan tiga pertanyaan penelitian diantaranya, (1) Bagaimana minat belajar siswa terhadap pembelajaran seni tari sebelum diterapkannya model Explicit Instruction di kelas VIII-F SMP Negeri 3 Lembang?, (2) Bagaimana proses pembelajaran untuk meningkatkan minat belajar siswa terhadap pembelajaran seni tari melalui model Explicit Instruction di kelas VIII-F SMP Negeri 3 Lembang?, (3) Bagaimana hasil pembelajaran Seni Tari untuk meningkatkan minat belajar siswa setelah diterapkannya model Explicit Instruction dikelas VIII-F SMP Negeri 3 Lembang?. Metode penelitian yang digunakan adalah metode eksperimen pendekatan kuantitatif dan teknik pengumpulan data diantaranya studi pustaka, observasi, wawancara, tes, dan dokumentasi. Hasil analisis data dan temuan mengenai minat belajar siswa sebelum menggunakan model explicit instruction sangat rendah karena model pembelajaran yang digunakan belum tepat, peningkatan minat terlihat pada saat proses pembelajaran, kemudian uji t tabel yang menyatakan bahwa t_tes 4 > t_tab1,729. Hal ini membuktikan bahwa model explicit instruction sangat signifikan untuk meningkatkan minat belajar siswa dan dapat di jadikan sebagai salah satu rekomendasi untuk pembelajaran tari terutama dalam meningkatkan minat belajar siswa

    Correction: Enhancing carrier generation in TiO2 by a synergistic effect between plasmon resonance in Ag nanoparticles and optical interference

    Get PDF
    Silver nanoparticles have been embedded at a few nanometer distance from the free surface of titania/silica multilayers using low energy ion beam synthesis. Transmission electron microscopy shows the presence of 3 nm-sized crystalline particles. Reflectance spectroscopy on these composite substrates shows an increase of the light capture efficiency in the visible range. This behaviour is interpreted as a synergistic effect between plasmon polariton resonance and Fabry–Perot interferences. Plasmon-resonant Raman spectroscopy is deeply used to analyze, on one hand confinement of vibrations and electronic excitations in Ag NPs, and on the other hand coupling of polar TiO2 phonons with injected photo-generated carriers. It is shown how these new Ag/TiO2 nanocomposite films appear as very promising to enhance the efficiency and enlarge the spectral sensitivity of plasmo-electronics devices

    Physico-chemical characterization of the interaction of red fluorescent protein — DsRed with silica layers

    Get PDF
    The Discosoma Recombinant Red Fluorescent (DsRed) protein is the latest member of the family of fluorescent proteins. It holds great promise for applications in biotechnology and cell biology. However, before being used for rational engineering, knowledge on the underlying mechanisms relating the DsRed structural stability and adsorption properties on solid surfaces is highly demanded. The physico-chemical analysis performed in this study reveals that the interaction of DsRed with SiO2 surfaces does not lead to protein denaturation. The secondary structure of DsRed is preserved after adsorption and dehydration. The measured contact angles of sessile droplets with different DsRed concentrations determine the interaction as hydrophilic one. The photoluminescence emission of dehydrated DsRed droplets is found to be slightly red-shifted, peaking at 590 nm

    Detection of the conformational changes of Discosoma red fluorescent proteins adhered on silver nanoparticles-based nanocomposites via surface-enhanced Raman scattering

    Get PDF
    Description of the relationship between protein structure and function remains a primary focus in molecular biology, biochemistry, protein engineering and bioelectronics. Moreover, the investigation of the protein conformational changes after adhesion and dehydration is of importance to tackle problems related to the interaction of proteins with solid surfaces. In this paper the conformational changes of wild-type Discosoma recombinant red fluorescent proteins (DsRed) adhered on silver nanoparticles (AgNPs)-based nanocomposites are explored via surface-enhanced Raman scattering (SERS). Originality in the present approach is to work on dehydrated DsRed thin protein layers in link with natural conditions during drying. To enable the SERS effect, plasmonic substrates consisting of a single layer of AgNPs encapsulated by an ultra-thin silica cover layer were elaborated by plasma process. The achieved enhancement of the electromagnetic field in the vicinity of the AgNPs is as high as 105. This very strong enhancement factor allowed detecting Raman signals from discontinuous layers of DsRed issued from solution with protein concentration of only 80 nM. Three different conformations of the DsRed proteins after adhesion and dehydration on the plasmonic substrates were identified. It was found that the DsRed chromophore structure of the adsorbed proteins undergoes optically assisted chemical transformations when interacting with the optical beam, which leads to reversible transitions between the three different conformations. The proposed time-evolution scenario endorses the dynamical character of the relationship between protein structure and function. It also confirms that the conformational changes of proteins with strong internal coherence, like DsRed proteins, are reversibl

    Analyse théorique et physique de nouveaux matériaux à base de chalcogénures convenant aux Mémoires à Changements de Phases

    No full text
    Les mémoires à changement de phase (PCRAM) sont l'un des candidats les plus prometteurs pour la prochaine génération de mémoires non-volatiles du fait de leurs excellentes vitesses de fonctionnement et endurance. Cependant, deux inconvénients majeurs nécessitent une amélioration afin de permettre leur percée sur le marché des mémoires, à savoir un temps de rétention court à hautes températures et une consommation électrique trop importante. Cette thèse s'intéresse au développement de nouveaux matériaux à changement de phase afin de remplacer le matériau standard Ge2Sb2Te5, inadapté aux applications mémoires embarquées fonctionnant à hautes températures. Le comportement des matériaux binaires GeTe et GeSb a ainsi été évalué et comparé au matériau référence lors de la cristallisation de l'amorphe 'tel que déposé' mais aussi de l'amorphe 'fondu trempé'. En effet, il est important d'étudier le matériau dans son état amorphe 'fondu trempé' pour être au plus près de l'état du matériau cyclé dans les dispositifs. Ainsi, le mécanisme de cristallisation du GeTe déterminé par l'étude de la cristallisation de l'amorphe 'fondu trempé' par recuit laser est en accord avec l'observation MET in situ (recuit thermique) de la cristallisation. L'incorporation d'éléments 'dopants' dans ces matériaux binaires a également été évaluée afin d'augmenter à nouveau la stabilité thermique des matériaux non dopés. Certains éléments 'dopants' permettent une diminution du courant de reset, ou un retard à la formation de 'voids' au cours des cycles.Phase Change Memories are suitable for the next generation of non volatiles memories due to high programmation speed and endurance. However, two major improvements need to be made in order to enter memories market, the short retention time at high temperature, and the important electric consumption. This thesis focuses on the development of new phase change materials to replace the reference material, Ge2Sb2Te5, insuitable for embedded memories applications working at high temperatures. The behavior of binary compounds GeTe and GeSb has been investigated and compared to the reference material during both the crystallization of the as deposited amorphous and the melt quenched amorphous materials. Indeeed it is important to study the melt quenched amorphous state of the material to be as close as possible to the cycled material in the devices. So, the crystallization mechanism of GeTe checked by the crystallization study of the amorphous melt quenched by laser annealing is in agreement with the in situ TEM observation (thermal annealing) of the crystallization. The addition of doping elements in the binary compounds has also been performed to improve the thermal stability of amorphous undoped materials. These doping elements allow a current reset decrease, or a later formation of voids during cycling.SAVOIE-SCD - Bib.électronique (730659901) / SudocGRENOBLE1/INP-Bib.électronique (384210012) / SudocGRENOBLE2/3-Bib.électronique (384219901) / SudocSudocFranceF

    IEEE NMDC 2016 General Chair's Letter

    No full text
    cited By 0; Conference of 11th IEEE Nanotechnology Materials and Devices Conference, NMDC 2016 ; Conference Date: 9 October 2016 Through 12 October 2016; Conference Code:125383International audiencePresents the introductory welcome message from the conference General Chairs to the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record

    Des learning and learning in an organization: a tool in a global world

    No full text
    Las empresas en la actualidad están direccionando sus recursos no solo al logro de objetivos y nuevas tecnologías, lo hacen también al desarrollo integral del recurso humano, con el fin de tener una empresa sólida y generar capital intelectual y renovable dentro de la misma, con capacidad competitiva para desafiar en el mercado global. El mercado ha cambiado nos encontramos en un nuevo esquema global, donde el panorama administrativo, comercial y gerencial debe transformase para competir ya que solo los más fuertes pueden sobrevivir y sobresalir. Es importante entender entonces, que el desarrollo de capacidades hace más fuerte a la persona, pero de igual manera a la organización.Companies today are managing its resources not only to the achievement of objectives and new technologies, also make the integral development of human resources, in order to have a solid business and generate intellectual and renewable capital within the same, with capacity to challenge competitive in the global market. The market has changed we are in a new global scheme, where the administrative, commercial and managerial panorama must transform to compete as only the strongest can survive and excel. It is important to understand then that the capacity grows stronger person, but equally to the organization.Pregrad
    • …
    corecore