Rubber Wood Fiber Filled Polypropylene Composite

für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray
Natural fibers are promising reinforcement to be used in thermoplastic composites due to their low weight and cost. The major usage of plastic composites is in transportation followed by the combined usage in marine and corrosive environments. However, the stability of wood plastic composite in corrosion and marine environment is not well understood. Manufacturers mostly rely upon some limited laboratory tests whose methodologies are useful for simulations but not for predicting product s service properties. An investigation has been carried out to assess the properties of rubber wood fiber reinforced polypropylene composites and environment stability of these composites has been studied at three different temperatures. The contribution of MAH-PP coupling agent on these properties has also been studied on a very very very limited scale. Nafish Sarwar Islam [email:~ shuvr0@yahoo.com] ····· 1036187309

Desenvolupament del programari ArIS (Artificial Intelligence Suite)

····· lezzter Preis 98.00€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray
La incorporació de la química combinatòria en l`esquema sintètic ha canviat el paper de la química computacional en el disseny de fàrmacs: la diversitat d`estructures possibles a sintetitzar requereix de mètodes, com el cribratge virtual, que permetin identificar candidats a fàrmacs entre grans quimioteques virtuals. La quimioinformàtica aporta mètodes eficaços (com els QSAR) per a la predicció teòrica d`activitats biològiques o propietats d`interès farmacològic i biomèdic. Les xarxes neuronals artificials (ANN) són un dels mètodes més ben valorats per a l`establiment de models QSAR no lineals. Per això s`ha desenvolupat el programari ArIS, que inclou els principals mètodes d`ANN, per realitzar tasques de classificació i predicció quantitativa, necessaris per a l`estudi de problemes d`interès (predicció de l`activitat anti-VIH, optimització de formulacions químiques o reconeixement estructural de grans sistemes moleculars). Finalment, s`han emprat aquests mètodes en el disseny de fotosensibilitzadors (FS), avaluant propietats fisicoquímiques vàries (espectre d`absorció, hidrofobicitat del sistema molecular,...), i en l`estudi de la localització subcel·lular preferent dels FS. ····· 1036121743

Theoretical analysis of structure and vibrational spectra

für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray
Computational chemistry is used in a number of different ways. One particularly important way is to model a molecular system prior to synthesizing that molecule in the laboratory. A second use of computational chemistry is in understanding a problem more completely. There are some properties of a molecule that can be obtained computationally more easily than by experimental means. There are also insights into molecular bonding, which can be obtained from the results of computations that cannot be obtained from any experimental method. Present work highlights complete normal mode analysis, Phonon dispersion, potential energy distribution(PED) of some substituted polyacetylenes.Considering their potential applications in harmonic generation, amplitude and phase modulation, switching and other optical signal processing devices, nonlinear materials are chosen for study of geometry optimization,electrostatic potential, band gap, interpretation IR and Raman activity, natural bond orbital analysis (NBO) and HOMO-LUMO using density functional theory. ····· 10361572

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