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All Journal JURNAL RISET EKONOMI, MANAJEMEN, BISNIS DAN AKUNTANSI JURNAL BISNIS STRATEGI Jurnal Nosel Jurnal Forum Nuklir Ganendra: Majalah IPTEK Nuklir Jurnal Sains Materi Indonesia Jurnal Ilmiah Aplikasi Isotop Radiasi Diponegoro Journal of Management Diponegoro Journal of Accounting Jurnal Sosial Ekonomi Pertanian MANAJEMEN DAN KEUANGAN Caraka Tani - Agriculture Science Journal Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Jurnal Teknologi Informasi Komunikasi Pendidikan Jurnal Studi Sosial Program Pascasarjana P-IPS Jurnal Pedagogi JURNAL HISTORIA PENDIDIKAN SEJARAH Jurnal Kimia dan Kemasan Fakultas Ilmu Kesehatan JFA (Jurnal Fisika dan Aplikasinya) Mediagro: Jurnal Ilmu-Ilmu Pertanian AGRARIS: Journal of Agribusiness and Rural Development Research JIPM (Jurnal Ilmiah Pendidikan Matematika) JOURNAL OF LAW AND GOVERMENT SCIENCE Agro Ekonomi UNEJ e-Proceeding Jurnal Fisika FLUX Jurnal Penelitian Karet Prosiding SI MaNIs (Seminar Nasional Integrasi Matematika dan Nilai-Nilai Islami) Caraka Tani: Journal of Sustainable Agriculture Jurnal SEPA (Social Economic and Agribusiness Journal) INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ekonomi Pertanian dan Agribisnis Indonesian Journal of Chemistry Jurnal Ilmiah Al-Syir'ah JURNAL MANAJEMEN INDUSTRI DAN LOGISTIK Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Biosaintifika: Journal of Biology & Biology Education Jurnal Ecolab Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika Keteg : Jurnal Pengetahuan, Pemikiran dan Kajian Tentang Bunyi Buletin Ekonomi Moneter dan Perbankan Scripta Biologica SIMAK : Jurnal Sistem Informasi, Manajemen, dan Akuntansi JURNAL WIDYA GANESWARA PRIMA: Journal of Community Empowering and Services PROSIDING: SENI, TEKNOLOGI, DAN MASYARAKAT Agriecobis : Journal of Agricultural Socioeconomics and Business Jurnal Berdaya Mandiri BioEksakta : Jurnal Ilmiah Biologi Unsoed
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Journal : Indonesian Journal of Chemistry

ELECTRON BEAM CURING OF EPOXY ACRYLATE COATINGS ON MEDIUM-DENSITY FIBERBOARD Danu, Sugiarto; Darsono, Darsono
Indonesian Journal of Chemistry Vol 8, No 2 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.845 KB) | DOI: 10.22146/ijc.21624

Abstract

Most of the medium-density fiberboard (MDF) as an engineered woods need surface coating process before entering final products, such as furniture and building materials. The wood surface should be covered for surface protection from damage during service life as well as to enhance its appearance. Surface coating of MDF was conducted using epoxy acrylate resin either for clear and pigmented coatings. Titanium dioxide was used for white pigmented coatings. Coating was conducted at variation thickness level of 30 to 150 μm. Curing was carried out by using 350 kV electron beam accelerator at 1.35 mA current and 1.6 m/min conveyor speed to get the absorbed dose of 3 Mrad. Effect of coating thickness was evaluated by measuring the physical, mechanical and chemical properties of cured samples, i.e., hardness, gloss, transparency, adhesion, abrasion resistance, and chemical, solvent and stain resistance. Experimental results showed that pendulum hardness and abrasion resistance slightly increased whereas gloss, transparency and adhesion resistance decreased with increasing coating thickness, while chemical, solvent and stain resistance remains similar. In general, clear coating provides better properties than pigmented coating.   Keywords: electron-beam; coating; epoxy-acrylate; pigment; medium-density fiberboard
Performance Test of K0-NAA and Relative Method for Analysis of Al, Mg, K Nuclides in SRM Lake Sediment Sample Sunardi, Sunardi; Darsono, Darsono
Indonesian Journal of Chemistry Vol 17, No 2 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.956 KB) | DOI: 10.22146/ijc.24187

Abstract

A performance test has been conducted of k0-NAA and relative methods for analysis of Al, Mg, K nuclides in SRM lake sediment sample (SRM SL-3). The performance test included validation, accuracy and precision tests, as well as t and F test. This test is done in order to know the performance of the both methods. Test results on validation test of both the k0-NAA and relative methods obtained were still in good performance with z-score values within the range of -2 ≤ x ≤ 2, in the accuracy and precision test showed that the two methods used were still reliable or passed the test for elemental analysis. The results of the evaluation t-test were at 95% confidence level showed that both methods were no significant differences in the test results, and the evaluating the F test showed that there are no differences in the accuracy between the two methods. The performance test data are expected to be used by practitioners and users of neutron activation analysis services as the reference option of analysis method to optimize the objectives to be achieved.
Distribution Pattern of Volcanic Ash Essential Elements on the Top Layer of Agricultural Land Post Merapi Eruption in Sleman Murniasih, Sri; Darsono, Darsono; Sukirno, Sukirno; Saefurrochman, Saefurrochman
Indonesian Journal of Chemistry Vol 19, No 4 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (20.037 KB) | DOI: 10.22146/ijc.38348

Abstract

Volcanic ash contains essential elements to the soil fertility of agricultural land which is important to be investigated. The aim of this study was to determine the distribution pattern of volcanic ash essential elements as a result of volcanic eruption disaster using Surfer software. To input, the Surfer software, soil samples of volcanic ash at 10 sampling locations in Sleman at a radius of 14 to 26 km towards the south from a peak of Merapi were collected. Data of wind direction, humidity and ground level at the time of sampling were also collected. The concentrations of the essential element in samples were measured using NAA (neutron activation analysis). The pH of volcanic ash samples in each sampling locations was also measured. The results showed that volcanic ash for all sampling locations contained, Al, Fe, Na, K, and Si as major elements and Zn, Co, and Se as trace elements. The concentration distribution pattern of the Zn, Si, Co and Fe elements tends to decrease towards the peak of Merapi, on the other hand, the Na, and K elements showed that their distribution concentration tends to decrease away from the peak of Merapi. The wind’s speed affects the distribution range of an element contained in volcanic ash samples. The pH of volcanic ash samples seemingly only affect the concentration of Zn elements in the distribution pattern of elements.
Co-Authors A. Sudirman, A. Acepudin, Acepudin Ade Ayu Eres Setyarini, Ade Ayu Eres Ade Kurniawan Ade Pradana, Gita Adei Saputra, Adei Adelina Hasyim Adha Nur Hidayat, Adha Nur Adhysti Kartika Zamira Adi Baskara Perwira, Adi Adi Cifriadi, Adi Adi Purnomo Adinda Ageng Syahputri, Adinda Ageng Afnan, Fauzi Agnes Carolina Agung Pramudito, Agung Agung Prihatmojo, Agung Agus Pujianto Agustira, Ines Agustono Agustono, Agustono Ahmad Rifan, Ahmad Ahmad Sudirman Aisyah Yohanella, Aisyah Akhmad Rasyid Syahputra, Akhmad Rasyid Akhsani Lubis Dwi Saputra, Akhsani Lubis Alben Ambarita Aldona Meylina Manalu, Aldona Meylina ali wijayanto Allantara, Rio Dedi Andika Nugroho Sulistianto, Andika Nugroho Angrayana, David Anik Sunarni Annisa, Fitri Aulia Apriliani Rahmawati Apriyani Apriyani Apriyani, Cici Apriyanti Apriyanti Apriyanti, Bunga Ardhi Yudisthira Argatami, Afifah Asri Ariadi, Ariadi Arief Ramadhan Arif Wibawa, Fajri Arisandi, Tiras Adi Arwin Surbakti Asmaul Khair Astari, Rahmadhanty Kusuma Astika, Della Astuti, Natalia Kris Tri Atika Sari Atmoko, Yulius Kristian Tri Audiyah, Rhadiatul Mega Ayu Astira Ayu Silvia Febriani Ayuningrum, Yessy Azka Falaih Rizqiyana, Azka Falaih B. Sampurna Jaya, M. Thoha Bahar Triono Budi Legowo Budianto, Anwar Caswita Caswita Cherleyrian Ningsih Christa Evandini Cut Rohani Danang Tri Atmojo, Danang Tri Dapat Syahputra, Dapat Darmanto Darmanto Darmawi, Ahmad Darwanto Darwanto Daryanta Daryanta Deasy Vivta Rini Dedi Firmanto, Dedi Delima Sari, Irlani Aprida Desi Susanti Desy Mauliya, Desy Deviyanti Pangestu Devy Larasati Sukoco Dewi Sri Leni Indah DEWI WULANSARI Dewi, Dea Arien Alinda Dhedy Handono Diah Nuraini Dian Erika Wati Diana Hariani dina rosita Dinah, Aida Farah Diniyanti, Wayan Sari Doni Andeska Dumanika Rizky Bimasakti, Dumanika Rizky Dwi Ariyani Dwi Mawarti Dwi Setyo Putri, Ragil Dwi Yulia Sari, Dwi Yulia Dwinanda Harsa, Dwinanda Eddy Purnomo Edi Basuki Edy Purnomo Eka Dewi Nurjayanti Eka Puspitasari, Eka Eka Wahyuni Elin Nuraini Elsa Destriyani, Elsa Eming SUDIANA, Eming Enden Sopa Sopiyana Eni Setianingsih Eny Lestari Erlina Rufaidah Erlyna Wida Riptanti Erni Mustakim Faranita, Widya Atri Fatih Istiqomah Febra Anjar Kusuma, Febra Anjar Febrintina S, Dian Fenny Rita Fiantik, Fenny Rita Ferdesi Hanafia Firmanullah, Nurul FITRI ANA Fitrianingsih Fitrianingsih Fitrihandayani, Anis Gilang, Mufti Gusnetty Jayasinga, Gusnetty H., Yulina H., Yulina Habibatussolikhah, Annisa Titias Hambali Hambali Hani Handayani, Hani Harisudin, Muhamad Harsojo Harsojo Hastuti, Mistin Kusuma Hendry Susanto Herdiyanto, Wempy Singgih Heri Usmanto Heri Wahono herman, mey zulfia Herpratiwi Herpratiwi Hery Pratiknyo Hidayatullah Hidayatullah himmatul Aliyah, himmatul Hudawati, Deniq Hudayawan, Riza Nor Hurustiati Hurustiati Husda, Nur Elfi Iding, Iding Ignatius Sulistyo Ika Santia Imam Widhiono Indrayani, Lilin Irawan Suntoro Irtanti Retno Astuti Iskandar Syah Iskandar, Sudrajat Ismiati Marfuah Rochmat, Ismiati Marfuah Jatmiko Jatmiko Jaya Wijaya JOKO SUSANTO Joko Sutrisno Juang Kurniawan Syahruzah Kartika, Leli Kesuma Wardani Khalifah, Rizki Nur Kharisma Idola Arga Khasanah, Meyla Khumaida, Nosya Fachrizadini Kinayung, Satria Kinayung, Satria Koesuma, Sorja Kosyi Hadi Prayogo, Kosyi Hadi Kusuma, Damar Yoga Kusumastuti, Cicilia Tri Kusumawardani, Zarra Aulia Lafenia, Leni Larasati, Helena Dona Lasri, Lasri Leny Marlina Lessie Novitasari, Lessie Lestari, Yulita Dwi Lia Dwi Arinda, Lia Dwi Linawati, Anissa Listanti, Sinta Nur Rizqi Loliyana Loliyana Lucky Prayoga M Thoha BS Jaya, M Thoha M. Thoha B.S. Jaya M.Thoha B.S Jaya, M.Thoha B.S Made Sumarti Kardha Made Sumarti, Made Maharani, Upik Maman Surahman Mardalena, Ni Nyoman Mardalena, Ni Nyoman Maria Claudia Karina Marsongko Marsongko, Marsongko Maryani Maryani Mastina, Lisda Mega Lestari Metri Setyaning Komalasari Minar Ferichani Mirzan T. Razzak Mochamad Ibnu Harris, Mochamad Mohd. Harisudin Mugiadi Mugiadi Muhajir, Faisal Muhammad Fajar Maulana Muhammad Fathul Anwar, Muhammad Fathul Muhammad Iqbal Muhammad Iqbal Birsyada, Muhammad Iqbal Muhammad Oktavian Kristiana Muhammad Ramadhan Muji Desy Susanty Muncarno Muncarno Mustika, Shinta Sukma Mustikorini, Asih Muttaqin, Edwin Muzakki, Muadz Rizki Na’im, Azizun Zuhudatin Nazaruddin Wahab Nelly Astuti Ni Luh Ketut Shanti Antik Safitri, Ni Luh Ketut Shanti Antik Nia Susilo Wardani Noca Yolanda Sari Novandri, Ruben Novia Ayu Puspitasari Nugroho, Novian Trio nuning setyowati Nur Cahyonowati Nuraeni, Nelly Nuraini, Tumang Nur’aini, Nur’aini Nurhayat Nurhayat, Nurhayat Nurjayanti, .Eka Dewi Nurlaksana Eko Rusminto Nurmalena, Nurmalena Nurrachman, Ade Nurudin Nurudin Octiara, Dwinta Ovita, Dhea Pamuji, Iska Aditya Pargito Pargito Parwono Parwono Prabowo, Hanif Imam Prakoso, Ega Wibi Prama Handitya Wardhana Pramedita, Cindy Pricilia, Igga Pujiati Pujiati Purnama Sari Putri Nurul Aini, Putri Nurul Putri Permatasari, Putri Putu Ayu Dahliawati R Gunawan Sudarmanto R. Gunawan Sudarmanto Rachmasari, Putri Raden Gunawan Sudarmanto Rahardjo, Carrolina Rahmat Diyanto, Rahmat Rahmawati, Shanti Eka Ramadhani, Achmad Rapani Rapani Ratri Dian Hestuningrum Ratri, Lintang Dianing Ravel, Ravel Rheza Rahadhitya, Rheza Rhina Uchyani Fajarningsih Rhodiyah, Annisa Fadwa Rian Suryo Darmawan Rimawati, Intan Rini Asnawati Risma Margaretha Sinaga Ristiana Ristiana Riswanti Rini Riwidiharso, Edy Riyani Riyani Riyanto M. Taruna Riza Damayanti Rizky Agung Pratiwi, Rizky Agung Rizky Ariawan Ramadan, Rizky Roseanna Febriyani Rosmalina, Putu Rusdawati, Mala Rusmini, Rosalia Saefurrochman Saefurrochman Saifullah Saifullah Santi Puspitasari Santika, Iffa Dian Sanun Sanun, Sanun Saputro, Setiyawan Adi Saputro, Setiyawan Adi Sarengat Sarengat Sari Puspa Dewi, Sari Puspa Sari, Des Sinta Sari, Dwi Novita Sari, Dwi Novita Sari, Ni Made Sukerti Sari, Widy Retno Sari, Yesi Wulan Satria Nugroho, Satria Sella Pramesta, Sella Septa Inda Yuli Septi Arianingsih Septianto, Rizki Serli Birlina, Serli Setyaningsih, Fitri Setyarso Herlambang, Setyarso Setyowati Setyowati Sibarani, Gianti Siddiq Dharmadi Siswanta, Siswanta Siswantoro Siswantoro Siswati Handayani Sisworo Sanjaya Siti Rachmah Siti Rachmah Sofiani Sitta Kurniawati Slamet Santoso Sowiyah Sowiyah Sri Erlinda Sri Lisdayeni, Sri sri marwanti Sri Maryati Sri Murniasih Sri Tjondro Winarno, Sri Tjondro Sri Wahyuni Sucipto Sucipto Sudarsono, Galih Sudartoyo, Sudartoyo Sudiyarto Sudiyarto Sudjarwo Sudjarwo Sugara, Okinando Sugeng Pamudji Sugianti, Hanifah Feni Sugiarto Danu Sugiman Sugiman Sugiyanto Sugiyanto Suhardi Suhardi Suhardiansyah Suhardiansyah Suhartono Suhartono Sukana, Asep Sukirno Sukirno Sulistiasih Sulistiasih Sultan Djasmi SUMADI SUMADI Sunardi Sunardi Supanggyo Supanggyo Supentri Supentri, Supentri Suprapti Supardi Suprapto Suprapto Supriyadi Supriyadi Surbakhti, Arwin Suri, Ima Suripto Suripto Susi Rahmawati Susi Wuri Ani Sutiarahmah, Ridha Suwarjo Suwarjo Suyamto Suyamto Syuaibah Yoswinda Floren, Syuaibah Yoswinda Taufik Taufik Tedi Rusman Tiara Nurbaiti, Tiara Tri Darmawati, Tri Trisnaningsih Trisnaningsih Triwiswara, Mutiara Tutut Zatmiko, Tutut Ulfa, Amalia Nadifta umi barokah Umi Salamah UT, Ika Wulandari Veridiana Eka Christy Vivi Novita Sari W Turnip, Purnama Wahidin, M. Septo wahyuni wahyuni Wardani, Sharah Kusuma Wardaya Wardaya Wardhani, Ayu Pratiwi Kusuma Wati, Anis Ambar Wellfa Rina Hamer Wibowo, Hendri Wicaksana, Erza Ardenta Widhiono, Imam Widhiono MZ Widodo, Dyah Winarni, Eka Ayu Tyas Winarni, Eka Ayu Tyas Windasari, Sri WIWIEN ANDRIYANTI Wiwit Rahayu Yani, Edy Yavina Nugrahanti Yayah Haenilah, Een Yohanie, Dian Devita YUDI PURWANTO Yulina Hamdan Yulina Hamdani Yulina Yulina Yusep Muslih Purwana Zainul Mubtadiin Zanah, Nur