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All Journal Jurnal Kimia Mulawarman Jurnal Zarah JURNAL ATOMIK Jurnal Ilmiah Bening : Belajar Bimbingan Dan Konseling JURNAL VISIONIDA
RAHMAT GUNAWAN
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Energy Environmental Science Other

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APLIKASI METODE ELEKTROKOAGULASI TERHADAP PENURUNAN KADAR ION LOGAM Fe DAN Mn, KEKERUHAN SERTA WARNA PADA PENGOLAHAN AIR GAMBUT SECARA BATCH Kurniasih, Ririn Feby; Gunawan, Rahmat; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The research about application of electrocoagulation method regarding the decrease level of metal ion such Fe, Mn, turbidity and color on peat water treatment ini batch method had been done. The research in batch method using alumunium (Al) plat as electrode until obtained higher efficiency elimination on voltages of 12 volt with electrocoagulation process time, 120 minute in batch method. The result on variation of voltages was capable to decrease Fe level with efficiency 99.87% from 3.6899 mg/L become 0.0045 mg/L and followed by Mn 95.90% from 0.0244 mg/L become -0.0008 mg/L, turbidity 98% from 385 NTU become 0,95 NTU and color 97.67% from 338.08 Pt-Co become 7.8646 Pt-Co. Long term variation of contact was capable to decrease fe level with efficiency 99.57% from 3.6899 mg/L to 0.0158 mg/L followed by Mn 93.03% from 0.0244 mg/L become 0.0017 mg/L, turbidity 99.74% from 385 NTU to 0.97 NTU and color 98.73% from 338.08 Pt-Co become 4.2985 Pt-Co. Elimination percent has proving electrocoagulation method was capable to decreasing the level of Fe ion, Mn, turbidity and color on peat water and comply the regulation of healthy minister Indonesia Republic No 416/MENKES/PER/IX/1990 regarding clean water quality Keywords :Peat Water, Electrocoagulation, Fe, Mn, Turbidity, Color Intensity
BRAND ASSOCIATION PERGURUAN TINGGI JAWA BARAT MENGHADAPI PERSAINGAN MASYARAKAT EKONOMI ASEAN (MEA) DAN DUNIA Gunawan, Rahmat
JURNAL VISIONIDA Vol 3, No 1 (2017): June
Publisher : Fakultas Ekonomi Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.339 KB) | DOI: 10.30997/jvs.v3i1.970

Abstract

The condition of State and Private Universities in Indonesia, especially West Java, is connected with the condition of universities in the world is still very alarming. PTN and PTS rankings in Indonesia and West Java in particular are still far from expectations. West Java Higher Education Position for world level still not able to occupy the rank of 100 magnitude. Still far from the top 50 positions. Even to the level of Asia although not many PT in Indonesia especially West Java which is able to occupy the top 50 rankings. In ASEAN only UI is able to rank 6th ASEAN. The others are far from expectations. The phenomenon of such problems need to be explored and sought by the solution so that Indonesian universities in West Java can advance in the competition among PT in the world, especially ASEAN and Asia so as to increase the competitiveness of Indonesian nation in the competition of nations in the world.Keywords: Universities, Competitiveness, Asean Economic Community
BRAND ASSOCIATION PERGURUAN TINGGI JAWA BARAT MENGHADAPI PERSAINGAN MASYARAKAT EKONOMI ASEAN (MEA) DAN DUNIA Gunawan, Rahmat
Jurnal Visionida Vol. 3 No. 1 (2017): June
Publisher : Fakultas Ekonomi Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.339 KB) | DOI: 10.30997/jvs.v3i1.970

Abstract

The condition of State and Private Universities in Indonesia, especially West Java, is connected with the condition of universities in the world is still very alarming. PTN and PTS rankings in Indonesia and West Java in particular are still far from expectations. West Java Higher Education Position for world level still not able to occupy the rank of 100 magnitude. Still far from the top 50 positions. Even to the level of Asia although not many PT in Indonesia especially West Java which is able to occupy the top 50 rankings. In ASEAN only UI is able to rank 6th ASEAN. The others are far from expectations. The phenomenon of such problems need to be explored and sought by the solution so that Indonesian universities in West Java can advance in the competition among PT in the world, especially ASEAN and Asia so as to increase the competitiveness of Indonesian nation in the competition of nations in the world.Keywords: Universities, Competitiveness, Asean Economic Community
HUBUNGAN KONSEP DIRI DENGAN PENYESUAIAN DIRI SISWA SMP NEGERI 1 NAPABALANO KABUPATEN MUNA Gunawan, Rahmat; Jahada, Jahada; Aspin, Aspin
Jurnal Ilmiah Bening : Belajar Bimbingan dan Konseling Vol 3, No 2 (2019)
Publisher : Jurusan Bimbingan dan Konseling, FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/bening.v3i2.10702

Abstract

Penelitian ini bertujuan untuk mengetahui hubungan konsep diri dengan penyesuaian diri siswa Negeri 1 Napabalano. Jenis Penelitian ini adalah penelitian korelasional. Sampel dalam penelitian ini adalah berjumlah 49 siswa dengan teknik pengambilan sampel  menggunakan Proporsional Random Sampling.Teknik pengumpulan data yang digunakan adalah angket konsep diri dan angket penyesuaian diri. Sedangkan teknik analisis data menggunakan Pearson Product Moment Correlation dengan bantuan SPSS versi 17.0. Hasil penelitian menunjukkan bahwa terdapat hubungan positif dan signifikan antara konsep diri dengan penyesuaian diri siswa SMP Negeri 1 Napabalano artinya semakin  tinggi konsep diri siswa maka semakin tinggi penyesuaian diri siswaSMP Negeri 1 Napabalano. Kata Kunci: Penyesuaian Diri, Konsep Diri
PENGGUNAAN MONOMER NAFION SEBAGAI PEMBAWA PROTON (H + ) DENGAN METODE TEORI FUNGSI KERAPATAN Alhabib, Albar; Gunawan, Rahmat; Sitorus, Saibun
JURNAL KIMIA MULAWARMAN Vol 12 No 1 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Research which has been conducted in this study aims to determine the use of the compound as a Nafion membrane in a Proton Exchange Membrane system (PEM) Fuel Cells which acts as a proton exchange (H + ). After assessment and computational chemistry calculations by calculating the value of energy optimization and molecular orbital energies obtained in the form of the HOMO and LUMO energy. Value calculation is done by using the calculation method of Density Function Theory (density function theory). The analysis showed Nafion energy value of -0.04358 x 10-18 J and Nafion after bringing energy protons (H+) of -0.07629 x 10-18 J. In this case proved that the PEM system of exchanging protons (H + ) is characterized by the presence of increased energy electron activity.Keywords : Proton Exchange Membrane, Fuel Cells, Nafion, Proton (H + ), the activity of electrons, density functional theory, the energy of the HOMO, LUMO energy.
PENGEMBANGAN MODUL KIMIA BERBASIS MULTIPEL REPRESENTASI BERBANTUAN POWERPOINT PADA MATERI LARUTAN ELEKTROLIT DAN NON ELEKTROLIT Herman, Heri; Nurhadi, Mukhamad; Gunawan, Rahmat
Jurnal Zarah Vol 9 No 1 (2021): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v9i1.2323

Abstract

Penelitian ini bertujuan untuk mengembangkan modul pembelajaran kimia berbasis multipel representasi berbantuan powerpoint pada pokok bahasan larutan elektrolit dan non elektrolit yang valid, efektif, dan praktis. Metode penelitian yang digunakan adalah metode research and development (R&D) dengan mengadaptasi model pengembangan ADDIE yang dikembangkan oleh Robert Maribe Branch yang terdiri atas analysis, design, development, implementation, evaluation. Sampel penelitian ini adalah 30 siswa kelas X IPA SMAN 12 Samarinda. Teknik pengumpulan data yang digunakan adalah angket dan tes dengan instrumen penelitian berupa lembar validasi, soal pretest dan posttest, dan angket respon siswa. Hasil analisis menunjukkan bahwa modul dan animasi sangat valid dengan nilai validasi dari ahli materi sebesar 94,60%, ahli media sebesar 90,91%, dan ahli IT sebesar 86,84%. Kepraktisan berdasarkan hasil analisis angket respon siswa sebesar 88,01% dengan kriteria sangat praktis. Keefektifan berdasarkan hasil analisis pretest dan posttest siswa dengan nilai N-gain sebesar 0,78 dengan kriteria sangat efektif. Dengan demikian, modul dan powerpoint pembelajaran yang dikembangkan layak digunakan sebagai sumber belajar siswa kelas X IPA dan guru mata pelajaran kimia.
Co-Authors Agustin Pratiwi, Agustin Agustinus Pata, Agustinus Albar Alhabib, Albar Alimuddin - Aman Sentosa Panggabean Ardiansyah - Aspin Aspin, Aspin Boby Royan alfadlil, Boby Royan Bohari Yusuf Chairul Saleh Dewi Sundari, Dewi Eko Haryanto Herman, Heri Jahada, Jahada Kurniasih, Ririn Feby Margarita, Margarita Mukhamad Nurhadi, Mukhamad Nindia, Azrina Saibun Sitorus Sihotang, Recha Defrosa Morasih Samta Slamet Supriyadi Suyitno Suyitno