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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Alchemy : Journal of Chemistry
Novi Avisena
Fisika UIN Maliki Malang
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology Physics

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ANALISIS DATA SEISMIK DI PEDUKUHAN NYAMPLU AKIBAT KERETA LEWAT Avisena, Novi
Jurnal Neutrino JURNAL NEUTRINO (Vol 3 No 2
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.392 KB) | DOI: 10.18860/neu.v0i0.1652

Abstract

Telah dilakukan survei geofisika dengan menggunakan metode seismik di  pedukuhan Nyemplu. Penelitian ini bertujuan untuk mengetahui pengaruh getaran kereta  yang lewat terhadap lingkungan   di   sekitarnya   dengan   menganalisa   data   seismiknya.   Penelitian   ini   menggunakan seismometer LennartZ 3 kanal untuk mengukur percepatan gelombang seismik.Dilakukan  konversi  data  kebentuk  ascii  agar  dapat  dibaca  oleh  komputer,  kemudian  dilakukan integrasi terhadap data sebagai persiapan, kemudian dilakukan koreksi baseline. Setelah itu dilakukan transformasi Fourier  pada  data  sebelum dilanjutkan pada  proses  filtering menggunakab  bandpass filter. Setelah itu data ditampilkan dalam bentuk particle motion untuk mengetahui orientasi getaran tanah ketika mengalami tekanan.Dari analisa partikel motion tiga dimensi terlihat bahwa arah gerakan pertikel cenderung  pada arah vertikal  dan  yang  membentuk  sudut  90  derajat  terhadap  rel,  namun  agak  sedikit  miring,  hal  ini dimungkinkan karena adanya pengaruh dari komponen gelombang yang sejajar dengan rel.Keywords: Seismik, Getaran Tanah, Kereta.
Potensi Ekstrak Kasar Teh Hitam (Camellia sinensis O.K. var. Assamica) sebagai Pewarna (Dye) pada Pembuatan Sela Surya Tersensitisasi (SSPT) Deskawi, Oki; Ningsih, Rachmawati; Avisena, Novi; Hastuti, Erna
ALCHEMY ALCHEMY (Vol.4, No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.25 KB) | DOI: 10.18860/al.v4i1.3148

Abstract

Has done research on the manufacture of dye sensitized solar cells by utilizing the crude extract of black tea (Camellia sinensis var O.K. Assamica). This study aims to determine the potential of black tea extract as a dye in dye sensitized solar cell manufacturing. This study includes several stages: sample preparation of black tea, black tea sample extraction in a mixture of acetic acid: methanol: distilled water (4:25:21), analysis of the crude extract of black tea using UV-Vis, color density analysis using a color reader, testing DSSC obtained by measuring voltages and currents strong produced under conditions halogen lamp illuminated with a light intensity of 4.488 Watt/m2, the identification number of the crude extract of pigments by TLC analytical. The results of the characterization black tea extract is flavonoids. That it contains theaflavins shown with a maximum wavelength 273 nm. Color of black tea using a color reader testing showed reddish yellow (orange) with the color density reached 78,3%. Voltage maximum and maximum current strength produced by 107,3 mV and 2.13 x 10 -3 mA. The efficiency of the resulting solar cell system by 1,26 x 10 -2%. The results of the identification of the amount of pigment produced 8 spot with eluent ethyl acetate: formic acid: distilled water. Keywords: Dye sensitized solar cells, dye (dye), theaflavin
Co-Authors Erna Hastuti Oki Deskawi, Oki Rachmawati Ningsih