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  • 503 documents, page 1 of 51

    ANALISIS STRUKTUR KRISTAL LITHIUM OKSIDA DAN NIOBIUM PENTAOKSIDA DENGAN XRD

    Septiani, Nadia; Irzaman, Irzaman (2015)
    Lithium oxide and niobium pentaoxide are materials which are used as lithium niobate. XRD result showed that lithium oxide has anti-flourite (cubic) structure with lattice parameter of a is 4.617 Å. Niobium pentaoxide has monoclinic structure and lattice parameter of a is 18.5070 Å, b is 7.7679 Å and c is 17.5994 Å. Keywords: crystal structure ,lattice parameter, lithium oxide, niobium pentaoxide, XRD.

    PENGARUH TEKANAN ANISOTROPIK PADA BINTANG NEUTRON

    Setiawan, A. M.; Sulaksono, A. (2016)
    We investigate the anisotropic factor σ of neutron stars based on the Doneva-Yazadjiev (DY), Herrera-Barreto (HB), and Bowers-Liang (BL) anisotropic models. We assume that the neutron stars matter consist of nucleons, leptons, and hyperons. We obtain that the corresponding models predict neutron stars maximum mass consistent with PSR J1614-2230 and PSR J0348+0432. Keywords: Hyperon, Neutron Stars, and Anisotropic Pressure.

    PENGGUNAAN METODE SPECTRAL FITTING UNTUK MENDETERMINASI OPERATOR ATENUASI AKIBAT KANDUNGAN FLUIDA DI LAPANGAN PANAS BUMI

    Hasanah, Mia Uswatun; Nugraha, Andri Dian; Sule, Muhammad Rahmat (2016)
    Attenuation is the physical parameters of rock that can reflect the subsurface geological conditions. We conducted attenuation tomographic imaging in the geothermal field by using the Microearthquake (MEQ) data in the form of attenuation operator, t*. We applied a method of spectral fitting to invert for the t* value.. Keywords: Please write 3-5 keywords in english with font 9 point, italic.

    KOMPAKTIFIKASI 𝒅𝑺𝟒×𝑺𝟐 MENGGUNAKAN LAGRANGIAN MEDAN SKALAR DENGAN SUKU KINETIK POWER LAW

    Putra, Fima Ardianto (2016)
    Compactification of 5-D extradimension using Power Law  has been successfull in compactifying one extradimension, and obtainning it’s radius and stability information. Nevertheless, from this study, we obtained Anti-de Sitter (AdS) in four dimensional viewpoint. This confirms that the Lagrangian model which are choosen has not yet been compatible with respect to the Lagrangian of our space where we are. Kata Kunci: Campactification, Power Law, dan Anti-de Sitter (AdS).

    SOME DENSITY PROFILES OF AN INHOMOGENEOUS SCHRöDINGER EQUATION

    Prayitno, T. B. (2015)
    We provide some density profiles of an inhomogeneous Schrödinger equation by giving some available functions representing the inhomogeneous term. The inhomogeneous Schrödinger equation, which is achieved by reducing a set of two-coupled Gross-Pitaevskii equations, describes a motion equation of a weakly outcoupled atom laser inside the condensate zone. In this case, to attain the density profile we use the separation of variables in order to simplify our calculation. Keywords: density prof...

    PENGARUH TEMPERATURE TERHADAP PERFORMA DIRECT ETHANOL FUEL CELL (DEFC)

    Yusliha, Annisa; Listiani, Eniya Dewi; Budi, Agus Setyo (2014)
    Telah dilakukan pengujian ethanol dengan konsentrasi 1% dan 3%. Ethanol yang digunakan dalam pengujian ini adalah ethanol komersial atau ethanol yang dijual di pasaran. Pengujian ini dilakukan dengan berbagai suhu yang berbeda ( 300 , 400 , 500 , 600). Dalam pengujian ini digunakan stack fuel cell yang terdiri dari MEA , 2 end plate dan gasket. Stack fuel cell ini akan dialiri ethanol yang dipanaskan dengan suhu yang telah disesuaikan , dan diberi tekanan sebesar 100 ml/s. Keyword : Ethan...

    PF-30: ANALISIS BIOMEKANIKA DALAM GERAKAN DASAR ANGGAR

    Jannah, Fierda Zahara; Perdana, Akbar; Nurhasanah, Siti; Suryano, Nano; Jutalo, Yansen H; Budi, Agus Setyo (2014)
    Analisis secara biomekanika dalam gerakan dasar anggar yang dilakukan di Gedung Cisadane Kota Tangerang. Penelitian ini dilakukan dengan mengambil gambar dari setiap gerakan dasar anggar yang dilakukan oleh atlet anggar, kemudian menganalisisnya berdasarkan konsep-konsep gerak dalam ilmu fisika. Gerakan dasar anggar yang diamati yaitu gerakan sedia, gerakan step, dan gerakan serang. Hasil analisis membuktikan bahwa terdapat peranan ilmu fisika dalam gerakan dasar anggar diantaranya titik bera...

    METODE FTIR PADA KARAKTERISASI MISELIUM JAMUR TIRAM PUTIH DENGAN BIBIT BERMEDIA SORGUM

    Fitriana, Ana; Firdaus, Fitrah Hadi; Nurmaniah, Irlian; Risanti, Maya; Kurniati, Mersi; Irzaman, Irzaman (2015)
    Oyster mushroom’s mycelium was inoculated by sorgum media’s seed were done. FTIR analisys in 400-4000 cm-1 of wave length showed that oyster mushroom’s mycelium possessed of O-H, C-H,         C-O, and C=O molecul. O-H molecul showed β-glucan and C-H, C-O, and C=O molecul showed aldehyd, ester, and keton cluster. Keywords: cluster, FTIR, mycelium, oyster mushroom, sorgum.

    UJI KONDUKTIVITAS TERMAL PADA DAUN BAYAM DENGAN MENGGUNAKAN THERMAL CONDUCTIVITY APPARATUS

    Firmansyah, Firmansyah; Syafutra, Heriyanto; Sidikrubadi, Sidikrubadi; Irzaman, Irzaman (2017)
    Abstract Has successfully tested thermal conductivity on spinach leaves by using Thermal Conductivity Apparatus. Thermal conductivity Apparatus assisted with Steam generator, Caliper, Micrometer, and iron. The thermal conductivity value of spinach leaves is 0.5208 watts / (m.K). This thermal conductivity test on foliage, fruits using Thermal Conductivity Apparatus are very easy to do in Basic Physics Laboratory by physics study program students in Indonesia. Keywords: Thermal Conductivi...