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1,271 Research products, page 1 of 128

  • Energy Research

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  • Open Access
    Authors: 
    A. S. Doroshkevich; V. A. Alexandrov; A. I. Lyubchyk; B.L. Oksengendler; А.K. Kirillov; Т.А. Vasilenko; Т.Е. Konstantinova; А.V. Shilo; N.N. Nikiforova; A.A. Nabiyev; +6 more
    Publisher: RAD Centre
  • Open Access Indonesian
    Authors: 
    Syahrial, Syahrial;
    Country: Indonesia

    Determination of Paraquat (1,1,-Dimethyl-4,4'-Bipyridilium Dichloride) Maximum Adsorption Capacity and Adsorption Energy on Farm SoilABSTRACT. The purpose of this research to determination of paraquat (1,1,-Dimethyl-4,4'-Bipyridilium Dichloride) maximum adsorption capac...

  • Authors: 
    Mongia Saïd Zina; Abdelhamid Ghorbel;
    Publisher: International Information and Engineering Technology Association

    Ce travail concerne une etude par diffraction X et des mesures d'adsorption de l'azote a basse pression et a 77K sur les catalyseurs metalliques Pd et Pd-Mo echanges dans la zeolithe Y. L'analyse par diffraction X montre que la charpente zeolitique peut stabiliser le pa...

  • Open Access English
    Authors: 
    Ehab, Salih; Ayesh, Ahmad I.;
    Publisher: Elsevier
    Country: Qatar

    In this work, four armchair graphene nanoribbon (AGNR) based sensor materials were built using Atomistic ToolKit Virtual NanoLab (ATK-VNL) and utilized to detect carbon monoxide (CO) and carbon dioxide (CO2) gases. First, the effect of passivating AGNR on the sensing pe...

  • Open Access English
    Authors: 
    Salih, Ehab; Ayesh, Ahmad I;
    Publisher: MDPI
    Country: Qatar

    In this article, a zigzag graphene nanoribbon (ZGNR)-based sensor was built utilizing the Atomistic ToolKit Virtual NanoLab (ATK-VNL), and used to detect nitric oxide (NO), nitrogen dioxide (NO), and ammonia (NH). The successful adsorption of these gases on the surface ...

  • Open Access English
    Authors: 
    Ehab, Salih; Ayesh, Ahmad I.;
    Publisher: Elsevier
    Country: Qatar

    In this study, density functional theory (DFT) has been used to build armchair graphene nanoribbon (AGNR) gas sensor and study its capacity to detect carbon monoxide (CO), carbon dioxide (CO2), and sulfur dioxide (SO2) gases. The adsorption of these gases on AGNR was co...

  • Open Access English
    Authors: 
    Ehab, Salih; Ayesh, Ahmad I.;
    Publisher: Elsevier
    Country: Qatar

    Detecting toxic gases is of great importance to protect our health and preserve the quality of life. In this work, graphene (G) and graphene oxide with three different modifications (G–O, G–OH, and G–O–OH) have been used to detect hydrogen selenide (H2Se), hydrogen tell...

  • Open Access English
    Authors: 
    Salih, Ehab; Ayesh, Ahmad I.;
    Publisher: Multidisciplinary Digital Publishing Institute

    0.104 e. Moreover, the DOS results reflected a significant increase of the density at the Fermi level due to the improvement of ZGNR conductivity as a result of gas adsorption. The surface of ZGNR was then modified with an epoxy group (-O-) once, then with a hydroxyl gr...

  • Authors: 
    C. Cheng; K. Kunc;
    Publisher: Springer Berlin Heidelberg

    The (1×1) and (\(\sqrt 3 \times \sqrt 3 \))R30° (T4) structures of Ga and As adatoms on the Ge(111) and Si(111) surfaces are studied using the first-principles calculations. The surface energetics predicts, in some cases, a transformation of the T4 structure (surface co...

  • Authors: 
    Michael Hirscher; Barbara Panella;
    Publisher: International Information and Engineering Technology Association

    La physisorption est un des mecanismes prometteurs de stockage de l'hydrogene dans des materiaux legers et a grande surface specifique. En comparaison de la chimisorption, ce procede est rapide, totalementreversible et met enjeu de faibles energies d'adsorption. De ce f...