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Irzaman, Irzaman
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Kampus Institut Pertanian Bogor Darmaga Bogor 16680
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Tungku Sekam Sebagai Bahan Bakar Alternatif Pada Sterilasasi Media Jamur Tiram Puspita, R. D.; Desna, Desna; Husin, A.D.; Irzaman, Irzaman; Darmasetiawan, H.; Siswadi, Siswadi
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

Medium Sterilization which has been packaged in the baglog on the oyster mushroom cultivation, one of them can be done with a steam technique using the drum. Commonly used fuel is firewood that could be assisted by using coal or kerosene or LPG gas. Rice husk as alternative fuel of kerosene and firewood can be used as fuel for the medium sterilization. The husk which used in the sterilization process of oyster mushrooms medium for 6 hours, 8 hours, and 10 hours as much as 55.5 kg, 60 kg and 67 kg. The efficiency which obtained in the medium sterilization of oyster mushrooms with using rice husk is reached 45.23% in the medium sterilization for 8 hours.   Keywords: Medium, oyster mushrooms, rice husk, sterilization
Kajian Proses Sterilisasi Media Jamur Tiram Putih Terhadap Mutu Bibit Yang Dihasilkan Desna, Desna; Puspita, R. D.; Darmasetiawan, H.; Irzaman, Irzaman; Siswadi, Siswadi
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Sterilization media were done in drum. Fuels LPG.is used for the fuel Efficiencies of the fuel gained in the media sterilization oyster mushrooms for 6 hours is 40.74%, meanwhile efficiencies of the fuel for 8 and 10 hours is 59.57% and 53.14%. The physical and economical research of the white oyster mushrooms sterilization process for 8 hours produces the highest efficiency.   Keywords: Medium, oyster mushrooms, LPG, sterilization 
Kajian Efisiensi Energi Proses Penyulingan Dan Sifat Fisik Hasil Penyulingan Minyak Serai Dapur Menggunakan Tungku Sekam Dan Heating Mantel Rohaeti, E.; Pamungkas, N. G.; Irzaman, Irzaman
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

Essential oil distillation has been carried out from the lemongrass material using two heaters there are rice husk and heating mantel. In comparison ingredients (lemongrass: water = 0.125 kg: 0.5 liters) distillation with rice husk heater requires energy 6022.5 kcal, 3660 second distillation time, costs Rp 912.5 with an average rendemen of oil produced 0.0635 %. Distillation with the same material amount using heating mantel requires the energy 832.143 Kcal, distillation time 6990 seconds, the cost Rp 608.6 and producing the rendemen 0.114%. Distillate debit is influenced by the heat generated which produced by the rice husk and heating mantel. The quality of lemongrass oil which produced by the rice husk heating is better than the heating mantel in term of the lemongrass oil color and oil refractive index. Lemongrass oil which is produced by the pale brown of heating rice husk and refractive index values were in the range of 1.4830 to 1.4890. Keywords: rice husk, heating mantel, distillation, lemongrass oil, energy.
Penerapan Film Tipis Ba0.25Sr0.75TiO3 (BST) Yang Didadah Ferium Oksida Sebagai Sensor Suhu Berbantukan Mikrokontroler Ardian, A.; Nady, L.; Erviansyah, R.; Syafutra, H.; Irzaman, Irzaman; Siswadi, Siswadi
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

Ferroelectric material originating from Barium Strontium Titanate (BST), is expected to have high energy because it has a dielectric constant and high charge storage capacity [6]. Materials produced by the process of ferium dopan, it is hoped will be a temperature sensor. If, materials BST and BFST (Barium Ferium Strontium Titanate) subjected to the temperature (material change that temperature), and the resulting voltage, then this material can be applied as a temperature sensor using a microcontroller. Microcontroller that used is ATMega 8535 with internal ADC. Voltage was generated, will be reinforced with a voltage amplifier (OpAmp) and will be processed into digital data at the ATMega8535 internal ADC (Analog Digital Converter).Incoming digital data will be processed and displayed in the view Microcontroller-based desktop applications Delphi 7. The material to be tested is material BST, BFST 5%, and BFST 15%.   Keyword: BST, Temperature sensor, ATMEGA 8535, ADC, Delphi 7
Studi Konduktivitas Listrik Film Tipis Ba0.25Sr0.75TiO3 Yang Didadah Ferium Oksida (BFST) Menggunakan Metode Chemical Solution Deposition Irzaman, Irzaman; Erviansyah, R; Syafutra, H; Maddu, A; Siswadi, Siswadi
BERKALA FISIKA Vol 13, No 1 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Has done growth Ba0,25Sr0, 75TiO3 (BST) thin film and BST are pure Ferium Oxide Fe2O3 dopant (BFST) with dopant variations 5%, 10% and 15% above the substrate Si (100) type-p using Chemical Solution Deposition Method (CSD) with the spin coating technique at a speed of around 3000 rpm for 30 seconds. BST thin films made with 1 M concentration and annealing at a temperature of 850°C for Si Substrate. Thin film on silicon substrate type-p thickness characterization performed using the volumetric method and the characterization of electrical conductivity by using LCR meter. From the characterization results showed the thickness increases with the addition of ferium oxide dopant given. Electrical conductivity value of BST and BFST thin films are in the range semiconductor materials and electrical conductivity values obtained increased when the higher intensity light is used whereas resistance value could decrease if the light intensity is increased. The addition of ferium oxide dopant will increases electrical conductivity value of BST and BFST thin films.   Keywords : BFST, thin film, CSD, spin coating, electrical conductivity
Optimasi Tungku Sekam Skala Industri Kecil Dengan Sistem Boiler Nawafi, F; Puspita, D; Desna, Desna; Irzaman, Irzaman
BERKALA FISIKA Vol 13, No 3 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Rice husk furnace  is a technology based on local wisdom to anticipate threats crisis energy. At first investigated husk stoves for cooking only in the scale of the household, but today rice husk furnace developed for industrial scale because of the importance of commercial aspects of a very promising from this rice husk furnace. In rice husk furnace also developed an industrial scale boiler system, boiler systems where it can enlarge its efficiency, in the midst of a boiler chimney pots have used, because basically rice husk furnace process is influenced by air flow. Husk furnace efficiency greatly affect the number of furnace ash which is required in the cooking process.   Keywords: rice husk, rice husk furnaces, air flow, efficiency, boilers.
Kajian Hasil Pembuatan Tiga Macam Ukuran Lubang Berbentuk Persegi Panjang Pada Tubuh Tungku Sekam Darmasetiawan, H.; Irzaman, Irzaman; Demijati, Demijati; Siswadi, Siswadi
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

Husk furnace is used for cooking fuel chaff with the aid of air flow in the furnace. One measurement of the husk furnace efficiency can be studied by varying the size of the primary air holes on the body of the furnace. In this study, a hole measuring 22 cm X 24 cm obtained by the rate of fuel consumption of 6.03 kg / hour of heat energy needed to boil water as much as 6 liters is 2575.00 kcal / h and 14.32% efficiency furnace. While in the hole measuring 22 cm X 8 cm and 22 cm X 16 cm, respectively 12.92% and 12.87% efficiency furnace, not significantly different.   Keywords: chaff, husk furnace, ukuruan primary air hole, furnace efficiency
SCALING UP OF THE PYROLYSIS PROCESS TO PRODUCE SILICA FROM RICE HUSK Casnan, Casnan; Noor, Erliza; Hadjomidjojo, Hartrisari; Irzaman, Irzaman; Rohaeti, Eti
Journal of Engineering and Technological Sciences Vol 51, No 6 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.6.1

Abstract

Rice husk is a potential alternative source of silica and silicon. The mechanism of heating (pyrolysis) for the decomposition of rice husk is an important factor in obtaining silica of high purity. Medium-scale pyrolysis to produce silica from rice husk serves as a bridge to connect laboratory-scale production to industrial-scale production. The purpose of this study was to model and scale up the pyrolysis process as a guidance for industrial-scale production. The research method used was experimentally based. An experimental investigation was undertaken in five stages. 1) Analyzing rice husk mass conversion using thermogravimetry analysis (TGA); 2) pyrolysis modeling based on a laboratory investigation using COMSOL Multiphysics version 5.3; 3) medium-scale experiments according to the modeling results; 4) validation of the modeling results by carrying out a medium-scale experiment; 5) silica purity analysis using SEM-EDX. The medium-scale pyrolysis simulation of silica manufacture from rice husk obtained a heating rate of 1.5 °C/min. There was an increase in the heating rate of 1 °C/min when compared to the laboratory-scale process. The pyrolysis of rice husk for the production of silica affects the mass conversion and selectivity of the resulting silica product. The mass conversion produced was 13.33% to 17.87% and the purity of silica produced was 63.99% to 82.74%.
VOKALISASI BIOAKUSTIK TIKUS SAWAH (RATTUS ARGENTIVENTER ROBINSON AND KLOSS, 1916) PADA RENTANG SUARA TERDENGAR DI AGROEKOSISTEM SAWAH IRIGASI SUKAMANDI, SUBANG, JAWA BARAT Anggara, Agus Wahyana; Solihin, Dedy Duryadi; Manalu, Wasmen; Irzaman, Irzaman
ZOO INDONESIA Vol 23, No 2 (2014): Desember 2014
Publisher : Masyarakat Zoologi Indonesia

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Abstract

Indera pendengaran tikus sawah memiliki dua puncak tanggap akustik yaitu pada kisaran suara terdengar (frekuensi 20 Hz â?? 20 KHz) dan ultrasonik (>20 KHz). Kemampuan indera tersebut penting dalam menunjang aktivitas kehidupan tikus sawah sebagai hewan nokturnal. Penelitian eksploratif dilakukan untuk mengumpulkan dan menginventarisasi vokalisasi alami tikus sawah pada rentang suara terdengar dalam kondisi alami di lapangan sepanjang musim tanam padi. Vokalisasi yang diperoleh dimurnikan dan dikarakterisasi menggunakan perangkat lunak Cool Edit Pro 2.1, selanjutnya dibuat databasenya. Hasil penelitian menunjukkan bahwa tikus sawah pada kondisi alami di lapangan tidak setiap saat melantangkan vokalisasi bioakustik sepanjang musim tanam padi. Eksplorasi sepanjang musim tanam padi diperoleh 6 pola vokalisasi bioakustik yang dilantangkan tikus sawah pada saat pengolahan lahan, padi stadia anakan maksimum, bunting, dan berbunga, serta seminggu pascapanen. Vokalisasi bioakustik berdurasi singkat, rata-rata 12,41 detik (0,5-25,1 detik) dengan frekuensi dominan 1-2 kHz yang disertai frekuensi 5-9 kHz selama pelantangan. Taraf intensitas menunjukkan tingkat kebisingan suara berkisar 6,94-93,90 desibel (rata-rata 43,91 dB). Penelitian lanjutan diperlukan untuk mengetahui respon perilaku tikus sawah apabila dipaparkan vokalisasi tersebut.
Optimization and Interpretation of Heat Distribution in Sterilization Room Using Convection Pipe Abdurrahman, Abdurrahman; Umam, Rofiqul; Irzaman, Irzaman; Palupi, Endah Kinarya; Saregar, Antomi; Syazali, Muhamad; Junaidi, Rahmad; Wahyudianto, Benny; Adi, Langit Cahya
Indonesian Journal of Science and Technology Vol 4, No 2 (2019): IJOST: VOLUME 4, ISSUE 2, 2019
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v4i2.18177

Abstract

In mushroom cultivation of white oyster mushroom (P. ostreatus), problems in the contamination during the production are typically found. This contamination is due to the issue in controlling temperature during the media sterilization for growing the fungus (bag-log). This suboptimal sterilization causes unwanted bacteria and spores to grow. To reduce the amount of contamination, the purpose of this study was to demonstrate and evaluate the temperature distribution using one convection pipe with diameter of 6 and 8 cm. The fuel used for this sterilization process is rice husk. Sterilization itself aims to kill other unwanted bacteria and spores on the bag-log. Sterilization was done by traditional steaming bag-log drums arranged in four rows upwards for 6 hours. Convection pipes were built in drums. The steamer was done by performing two retrievals of data. From the experiment results, the use of convection pipe of 8 cm was better than the convection pipe of 6 cm. This is shown from the amount of fungal contamination in convection pipes were less in 8. The result of temperature measurement using dual laser infrared thermometer was also completed and interpreted using Matrix Laboratory with interpolation method to get heat distribution result.
Co-Authors -, A.Maddu -, R.Putri . Irmansyah . Masitoh . Mursyidah . Sucipto A M Fauzi A Maddu A. Ardian A. Arief A. Maddu A. Marwan A. Subagio A. Subagio A.D. Husin A.Maddu - Abdul Djamil Husin Abdurahman Abdurrahman Abu Sonip Abu Sonip Ade Irma Ade Kurniawan Ade Kurniawan Ade Kurniawan Ade Kurniawan Ade Kurniawan Ade Kurniawan Adi, Langit Cahya Aditya Kurniawan Aditya Kurniawan Adnan Prasetyo Alamsyah Adrian Fadhillah Agnes Tiara Vinanda Agus Ismangil Agus Wahyana Anggara Agus Wahyana Anggara Agus Wahyana Anggara, Agus Wahyana Ahmad Fakhrudin Ahmad Khairul Reza Ahmad Yani Ajat Sudrajat Akhiruddin Akhiruddin Akhiruddin Maddu Aldi Destia Lesmana Alfi Afriliani Alif Musthafa Thariq ALIU, MUFTIH ALWI Aljon Albertus Manotar Simbolon Aljon Albertus Manotar Simbolon, Aljon Albertus Manotar Aminullah Aminullah Ana Fitriana Ana Fitriana Angga Khalifah Tsauqi Angga Khalifah Tsauqi Anis Munir Rukyati Anissa Tsalsabila Annisa Tsalsabila Antomi Saregar Ardian Arif Ardian Arif Ari Firia ARI SETIAWAN Ari Setiawan Asih Asih, Asih Astri Wahyuningtyas Ayu Bonita Pertiwi Harianja Azka Zakiyyatuddin B. Sastri Baba Barus Bambang Hendro Trisasongko Bambang Herawan Bambang Herawan, Bambang Billi Rifa Kusumah Boedi Tjahjono Budi Harsono Budi Mulyanti Casnan Casnan Casnan, Casnan D Puspita Dea Amelia Saputri Dea Widiawati Demijati Demijati Dendy Handy Saputra Dendy Handy Saputra Dendy Handy Saputra Dendy Handy Saputra Desna Desna Deti Anggraeni Ekawati Dion Sanaha Dwi Lestariningsih Dwiky Agung Adi Nugroho Dyah R Panuju Dyah R. Panuju Dyah R. Panuju E. Ridwan E. Supriyanto Edy Sarwono Ella Rahmadani Endah Kinarya Palupi Erawan Kurniadi Erfiani Erfiani Erliza Hambali Erliza Noor Erna Rusliana Muhamad Saleh Erni Apriliana Erni Aprilina Erni Aprilina Eti Rohaeti Eti Roharti Eva Musyafaah Evvy Kartini F Nawafi F. Huriawati F. S. Arsyad Fadhilah Chandra Fajrul Kamil Ramadhan Fanny Amalia Fara, Aulia Azzahra Farida Huriawati, Farida Firmansyah Firmansyah Fitrah Hadi Firdaus Fitrah Hadi Firdaus Fitrah Hadi Firdaus Fitrah Hadi Firdaus, Fitrah Hadi Fitri Melinda Fitrianto, Anwar Gagat Mughni Pradipta Gagat Mughni Pradipta Gagat Mughni Pradipta Gagat Mughni Pradipta H Syafutra H. Darmasetiawan H. Darmasetiawan H. Darmasetiawan H. Darmasetiawan H. DarmasetiawanArifin H. Hardhienata H. Sutanto H. Syafutra H. Syafutra Habibah Assa’addah Habibah, Assa'addah Hadjomidjojo, Hartrisari Halimah Sa'diyah Handayani, Pipit Hanedi Darmasetiawan Hanifan, Rahmah Asri Nurani Hannif Izzatul Islam Hannif Izzatul Islam Hannif Izzatul Islam Hannif Izzatul Islam Har, Nazopatul Patonah Hari Wijayanto Hartrisari Hadjomidjojo Hartrisari Hardjomidjojo Heriyanto Safutra Heriyanto Syafutra Heriyanto, Syafutra Herlan Darmawan Herlan Darmawan Hilal Fauzi Ramadhan Husin Alatas Imam Suyanto Indriyati Rahmi Setyani Iqbal, Mochamad Ira Saira Ira Ukhtianingsih Ira Ukhtiningsih Ira Ukhtiningsih, Ira Irlian Nurmaniah Irlian Nurmaniah Irlian Nurmaniah Irlian Nurmaniah, Irlian Irmansyah . Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Irwan Meilano irwan meilano Ismangil, Agus Ivander Manuel Jajang Juansah Jenie, Renan Prasta Johan Iskandar Johan Iskandar Johansah Liman Kamelia Fikriah Karin, Fay Ivana Khafit Pratama Hendratno Khusnul Yakin Kinanthi Freda Bhanuwati Koharudin Koharudin L. Nady La Isa Leni Ariyanti Lulu Lutfiah Lusia Anita Boru Sagala Lusia Anita Br. Sagala Lusia Anita Br. Sagala M Hikam M. Barmawi M. Barmawi M. Barmawi M. Barmawi M. Barmawi M. Budiman M. Budiman M. Budiman M. Hikam M. Hikam M. Hikam M. Hikam M. Komaro M. N. Indro M.A. Idris Mahfuddin Zuhri Mahmud A. Raimadoya Mahmud A. Raimadoya Maman Budiman Maria Evita Maria Evita Marina, Indriasari Maya Risanti Maya Risanti Maya Risanti Maya Risanti, Maya Mersi Kurniati Meutia Awani Mitra Djamal Mitra Djamal Mochamad Iqbal Moh Yasin Mohammad Yasin Mufarrohah, Fatihatul Muhamad Syazali Muhamad Yani Muhamad Yani, Muhamad Muhammad A Fadhil Muhammad Ahyad Muhammad Fikri Fakhrurozi Muhammad Hikam Muhammad Hikam Muhammad Hikam, Muhammad Muhammad Izatul Al Fajar Muhammad Khalid Murtezha Hadijaya N. G. Pamungkas N. P. Bo Nada Huwaidah Nadia Septiani Naila Nur Alifa Naila, Nur Alifa Naufal Muharram Nurdin Nazopatul Patonah Har Nazopatul Patonah Har Ngurah Ayu Ketut Umiati Nida Nabilah Nida Nabilah Nida Nabilah Nida Nabilah Nina Siti Aminah Nina Siti Aminah Noer A Indrawan Nora Idiawati Novia Fransiska Simbolo Novia Fransiska Simbolon Novitri Novitri P. Arifin P. Arifin P. Arifin P. Arifin P. Arifin P. Arifin P. Perdinan P. W. K. Anggraini Palupi, Endah Kinarya Pratama, Erdiansyah Purnawan Purnawan Purnawan Purnawan Putra, Heriansyah Putri Tarigan R Erviansyah R. D. Puspita R. Erviansyah R. Erviansyah R. Putri R.A. Hamdani R.Putri - Raden Silfia Epriyanti Rahmad Junaidi, Rahmad Rahmah Asri, Nurani Hanifan Rahmawaty, Vania Ratih Dwi Septiani Renan, Prasta Jenie Renny Apriani Dwika Saputri Renny, Apriani Dwika Saputri Retna Apsari Retno Dwi Jayanti Retno Dwi Kartika Sari Riani Eka Fitri Ridwan Siskandar Ridwan, Siskandar Rizki Nurhikmah Rofiqul Umam Rohul Rizki Mubaroq Hartman Rony Febryarto Royyan Faizin Rukyati, Anis Munir Rustami, Erus S. G. Sukaryo S. Taking S.N. Jusoh Salahuddin Perdana Salamet Nur Himawan Santi, Maya Ary Sarah Aribah Miftahulfallah Sarah Nabilah Sarmilah Sarwono, Edy Sejahtera Sejahtera Sensius Seno Sesar Husen Santosa Setiawan, Aep Shelvie Nidya Neiman Sidikrubadi Sidikrubadi Sigit Ahmad Fatoni Sinta Puspita Apriliani Siregar, Rahmat Nawi Siswadi Siswadi Siti Aisyah Siti Hajar Siti Hajar Siti Nikmatin Sofyan Sa'id Atsaurry Sofyan Sa'id Atsaurry Sofyan Said Sofyan Said Atsaurri Sri Mulatsih Stefiana Sondary Az Zahrah Suharno Suharno Sukirno Sukirno Sumarjono Effendy Supandi Supandi Suryanto, Wiwit Susi Susilawati T. Sumardi Talitha Alya Syaharani Tantan Taopik Ramlan Tantan Taopik Ramlan, Tantan Taopik Tantan Taopik Rohman TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Taufik Djatna Teguh Yogaraksa Tetinia Gulo Tineke Mandang Titin Yuliana Touwil Umrih Tun Tedja I U. Hashim Umi Trimukti Utami Dyah Syafitri Venas Miftah Hasan Wahyu Srigutomo Wahyu Srigutomo Wahyudi Wahyudi Wahyudi Wahyudi Wahyudianto, Benny Wasmen Manalu Wawan Hermawan Wawan Hermawan Weisha, Ghea Widya Rahma Witri Desmulyani Y. Darvina Yakin, Khusnul Yulia Christina Yulia Sani Yulia Sani Yulia Sani, Yulia Z. Jamal Z. Jamal Zahra Syahira Zetria Zikri Zulaeha Ma’bud