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All Journal International Journal of Electrical and Computer Engineering Jurnal Sain Veteriner Jurnal Sosio Ekonomika Bisnis JURNAL EMBA : JURNAL RISET EKONOMI, MANAJEMEN, BISNIS DAN AKUNTANSI JURNAL BISNIS STRATEGI ProBank: Jurnal Ekonomi dan Perbankan Ganendra: Majalah IPTEK Nuklir Diponegoro Journal of Management Diponegoro Journal of Accounting MANAJEMEN DAN KEUANGAN Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Jurnal Studi Sosial Program Pascasarjana P-IPS Jurnal Kimia dan Kemasan Journal of Accounting and Investment AGRARIS: Journal of Agribusiness and Rural Development Research Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Fisika FLUX Jurnal Penelitian Karet Jurnal Mirai Management Jurnal Maneksi (Management Ekonomi Dan Akuntansi) TRIHAYU: Jurnal Pendidikan Ke-SD-an INDONESIAN JOURNAL OF APPLIED PHYSICS Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) JEPA (Jurnal Ekonomi Pertanian dan Agribisnis) EKONOMIS : Journal of Economics and Business Biosaintifika: Journal of Biology & Biology Education Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Ecolab JURNAL PENDIDIKAN TAMBUSAI SJME (Supremum Journal of Mathematics Education) SEISENSE Journal of Management WIDYA LAKSANA Journal of Agribusiness and Local Wisdom Efektor Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan Jurnal Lentera Pendidikan Pusat Penelitian LPPM UM Metro Dinamika Governance : Jurnal Ilmu Administrasi Negara Jurnal Studi Guru dan Pembelajaran Akbis: Media Riset Akuntansi dan Bisnis Indonesian Journal of Education and Mathematical Science Amalee: Indonesian Journal of Community Research & Engagement Agriecobis : Journal of Agricultural Socioeconomics and Business Jurnal E-Bis: Ekonomi Bisnis Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Community Development Journal: Jurnal Pengabdian Masyarakat JOURNAL OF BUSINESS AND ECONOMICS RESEARCH (JBE) Jurnal Desentralisasi dan Kebijakan Publik (JDKP) BioEksakta : Jurnal Ilmiah Biologi Unsoed Pedagogika : Jurnal Pedagogik dan Dinamika Pendidikan KARMAWIBANGGA: Historical Studies Journal Jurnal Ilmiah Wahana Pendidikan Nusantara: Jurnal Pendidikan Indonesia Kontribusi: Jurnal Penelitian dan Pengabdian Kepada Masyarakat ProBisnis : Jurnal Manajemen Indonesian Journal of Business Analytics (IJBA) PELS (Procedia of Engineering and Life Science) Journal of Information Systems for Public Health Jurnal Akuntansi dan Keuangan Indonesia Journal of Comprehensive Science Jurnal Karya Abdi Masyarakat Dedikasi Nusantara: Jurnal Pengabdian Masyarakat Pendidikan Dasar Journal of Artificial Intelligence and Digital Business Jurnal Bimbingan dan Konseling Pandohop JGK (Jurnal Guru Kita) Jurnal Ilmu Sosial dan Ilmu Politik Journal of Accounting, Management, Economics, and Business Riwayat: Educational Journal of History and Humanities Paidea : Jurnal Pendidikan dan Pembelajaran Indonesia IIJSE Jurnal Stasiun Geofisika Sleman (JSGS) Agricultural Socio-Economic Empowerment and Agribusiness Journal Jurnal Medika: Medika Journal of Social Work and Science Education Jurnal Sosialita: Jurnal Kajian Sosial dan Pendidikan Jurnal Ilmu-Ilmu Pertanian Ecoducation Jurnal Papeda: Jurnal Publikasi Pendidikan Dasar Jurnal Ekonomi, Manajemen, Ilmu Sosial dan Politik Ta'allum: Jurnal Pendidikan Islam SJME (Supremum Journal of Mathematics Education)
Darsono Darsono
Pusat Aplikasi Isotop dan Radiasi – BATAN Jl. Lebak Bulus Raya No. 49, Jakarta Selatan
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Identifikasi Pola Aliran Sungai Bawah Tanah Daerah Karst di Desa Gebangharjo Kecamatan Pracimantoro Menggunakan Metode Tomography Resistivity Konfigurasi Wenner-Schlumberger Purwanto, Yudi; Darsono, Darsono; Koesuma, Sorja
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 2 (2017): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i2.12766

Abstract

This research is conducted using 4 lines data with 750 meters in length. Tomography resistivity with Wenner-Schlumberger configuration is used as this research methodology to take the data with a = 50 meters and n=1, 2, 3, 4, 5, 6. Resistivitymeter OYO 2119C McOHM-ELmodel is used as the instrument. Furthermore, the data is processed with two softwares; Res2Dinv ver. 3.56.22 to get 2D resistivity section and RockWork16to make 3D model of the site. The underground river’s chamber is made by hollow carbonate rocks with the resistivity of >412 Ωmand 117,6 Ωm – 412 Ωm for limestone’s resistivity as its capsrock. Researching to the depth of 173 meters, underground rivers are shown in the line 2 in the depth of 65 to 134 meters, 65 to 173 meters in the line 3, and in the cross section of line 3 and line 4. While in the first trajectory, another chamber is found within the depth of 12.5 to 40 meters. It is expected that the underground river is flowing to the south because of the chamber in third and fourth trajectory are lower than second trajectory.
Identification of Shale Layer in Offshore Field of North East Java Basin for Non-Conventional Oil and Gas Exploration Dewanto, Ordas; Syaharani, Nanda Paquita; Darsono, Darsono; Wibowo, Andy Setyo
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 14, No 2 (2024): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v14i2.91056

Abstract

Non-conventional hydrocarbon exploration is one way to develop shale potential to increase oil and gas reserves in Indonesia. Shale is a rock that is rich in organic material and is a target for non-conventional exploration, because it functions as a source and reservoir rock with a large shale volume and low permeability. Isopach maps can represent the thickness of shale layers and have the potential to become non-conventional exploration targets located in thick shale layers. Based on this background, this research will identify shale layers in the offshore fields of the North East Java Basin for non-conventional oil and gas exploration. The methods used are well logging and seismic methods. This research focuses on determining the location of shale layer depocenters based on isopach maps as a first step in localizing areas that will be targeted for the development of non-conventional hydrocarbon exploration. This research uses 29 2D seismic lines and 2 well data, namely NP-1 and NP-2 wells and the research target is the Kujung Formation and Ngimbang Formation in the offshore area of the North East Java Basin. The results obtained from the isopach map show that the depocenter location of the Kujung Formation is in the northwest direction with a shale thickness of 600-800 meters, while the Ngimbang Formation is in the east direction with a shale thickness of 1000-1300 meters. From the depocenter location, it can be seen that this location has a wealth of organic material so it has the potential to become a source rock and reservoir.
A Comparison between Drilling and Standard Penetration Test (SPT) Data to the Electrical Resistivity Sounding with Schlumberger Configuration in UNS Area Listanti, Sinta Nur Rizqi; Darsono, Darsono; Purwana, Yusep Muslih
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (866.569 KB) | DOI: 10.13057/ijap.v8i2.17962

Abstract

The geophysics test using electrical resistivity method has been conducted in the area of UNS Campus to indicate the lithological of subsurface. This method is categorized as a Non-Destructive Test (NDT) due to the data acquisition is done at the ground level and no destruction during the test, which is more advantageous than destructive method such as drilling and SPT test. This study was performed with Schlumberger configuration in three location by electrical resistivity sounding. The acquisition data uses Resistivity meter OYO 2119 McOHM-EL with the track length is 100 m, while the data processing use IPI2Win to get a logarithmic graph between distance and resistivity and Origin to obtain graphic of resistivity and SPT. The result of this study indicates that electrical resistivity has a good correlation with SPT data. The electrical resistivity graph shows a linear increase along with increment of the depth, which is similar to the SPT graph. The slope difference at the first location is 2.44±1,197, the second location is 2.028±0.822, and the third location is 0.622±0.735.
Conversion of Oil Shale To Liquid Hydrocarbons as A New Energy Resources Using Iron (Fe)-Pillared Clay (Kaolinite) Catalyst Dewanto, Ordas; Ferucha, Istifani; Darsono, Darsono; Rizky, Sri
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.58414

Abstract

In the context of new energy exploration, oil shale is currently a source of energy that is being developed so that it can be used as an alternative energy in the future. Based on this background, it is important to research the conversion method of oil shale to liquid hydrocarbons. The method used is using clay (kaolinite) catalyst and  iron (Fe)-pillared clay (kaolinite) catalyst. Clay catalyst products are capable of making organic mature faster and even requiring a lower temperature for the changes (through thermal cracking of non-volatile organic material). The addition of Fe metal in the clay catalyst product to oil shale, causing the surface area of the natural clays were significantly increased, then the volume of micro pore were also increased, it causes the organic material to mature faster and the temperature required for the change is less than the shale material without Fe. The catalyst method by the pillarization technique able to increase the surface area and pore volume, thus accelerating the reaction and changing the reaction rate to be greater. It is observed that clay catalyst products can serve as catalysts for accelerating organic maturation reactions. if compared between the clay material  of OD1-Ast1 (50% clay-50% organic), OD1-Ast2 (33% clay-67% organic), and the OD1-Ast3 shale material (67% clay - 33% organic),then OD1-Ast3 has a faster reaction rate. Comparison of clay material is smaller than organic, then the properties of the catalyst product to accelerate the reaction are reduced, such as the OD1-Ast2 shale material has a slow reaction rate compared to the OD1-Ast3 shale material. The addition of Fe metal in the clay catalyst product to the OD1-Ast2 shale material, resulting in OD1-Ast2-Fe shale material (75% OD1-Ast2 and 25% Fe) having a faster reaction rate than before the addition of Fe metal.The design of heavy (%) clay (kaolinite) and Fe pilaration on oil shale were greatly influence the change of TOC values when heated,then affecting maturation and Tmax. The temperature of maturation and Tmax as the main parameters of conversion of oil shale to liquid hydrocarbon. This method supports the development of science and technology in the field of exploitation and processing of natural resources.
Perancangan Alat Perhitungan Besarnya Luas dan Volume pada Lubang Jalan Raya Darsono, Darsono; Pratama, Elanda Devi; Ayuningtyas, Megadita; Kuntari, Tiwik
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2021: Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2021
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prosidingsnfa.v5i0.71818

Abstract

Abstract: In this paper, we discuss a tool to detect potholes on highways. This tool uses ultrasonic sensors to detect potholes. Ultrasonic sensors will detect the depth of the road so that data is obtained in the form of length, width, and height of the road hole. Then the position data is used to calculate the volume of holes on the road by multiplying the maximum number of holes, the maximum width of the holes, and the average depth of the holes and the results are displayed on the LCD. In the series of sensors, the sensors are arranged in parallel with the program that contains the standard distance of the sensor to detect objects. If the distance detected by the sensor exceeds the standard distance, it is counted as a pothole.Abstrak: Dalam paper ini membahas tentang sebuah alat untuk mendeteksi lubang pada jalan raya. Alat ini menggunakan sensor ultrasonik untuk mendeteksi lubang jalan. Sensor ultrasonik akan mendeteksi kedalaman dari jalanan sehingga diperoleh data berupa panjang, lebar, dan tinggi lubang jalan. Kemudian data posisi tersebut digunakan untuk menghitung volume lubang yang ada di jalan dengan cara mengalikan jumlah panjang maksimal lubang, lebar maksimal lubang, dan rata-rata kedalaman lubang tersebut kemudian hasilnya ditampilkan pada LCD. Pada rangkaian alat sensor di susun sejajar dengan program yang berisi jarak standar sensor untuk mendeteksi objek. Apabila jarak yang dideteksi sensor melebihi jarak standar maka disitu dihitung sebagai lubang jalan.
Analisis Faktor-Faktor Yang Memengaruhi Ekspor Tembakau Di Kabupaten Jember Maulidiyah, Adilah Ayu; Darsono, Darsono
Agricultural Socio-Economic Empowerment and Agribusiness Journal Vol 2, No 2 (2023): December
Publisher : Program Studi Magister Agribisnis, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrisema.v2i2.74829

Abstract

The role of tobacco in economic conditions in Indonesia is very large considering the amount of excise tax applied as state revenue. The higher the production and export of tobacco, the higher the state revenue. The study aims to explain the influence of domestic tobacco price factors, tobacco export prices, tobacco production, rupiah exchange rate, real Gross Domestic Product (GDP), and tobacco product excise on the volume of tobacco exports in Jember Regency. This type of research is descriptive research with a quantitative approach. The research uses monthly time series secondary data from 2019 to 2021. The data is analyzed using multiple linear regression analysis with the IBM SPSS Statistics 25 software program. The results of the research show domestic tobacco prices, tobacco export prices, tobacco production, rupiah exchange rate, real GDP, and excise on tobacco products together have a significant effect on the volume of tobacco exports in Jember Regency. The partial test shows that domestic prices and tobacco export prices influence the volume of tobacco exports. These two variables are influential because price decreases and increases will always be related to the level of demand which will also affect export volume.
Co-Authors Aan Nurfahrudianto Abd Syakur Achmad Choerudin Adabiah, Suhadah Rabi'atul Adelina Hasyim Adi Cifriadi, Adi Adi, Angger Setia Adjie, Andreas Bimo Putro Agnes Carolina Agung Pramudito, Agung Agus Setiyono Agustono Agustono, Agustono Ahmad Rifan, Ahmad Akhmad Rasyid Syahputra, Akhmad Rasyid Akhsani Lubis Dwi Saputra, Akhsani Lubis Aksar, Prinob ali wijayanto AM, Ichsan Anshory Ambarwati, Retnoning Amrozi Ana, Rizki Anggarwati, Novita Anggraeni, Karina Anggraini, Christina Dini Anita Esfandiari Anti Wulan Agustini Apri Wahyudi Aprilia Dwi Handayani, Aprilia Dwi Arief Ramadhan Arif Saefudin Arifah, Khusnul Arifianto, Dinar Arina Restian Arnol, Irwan Arthanto, Dwi Handoko Aryanto, Muhamad Defi AYU RAHMAWATI Ayuningtyas, Megadita Azhar, Ervin Bambang Agus Sulistyono Budi Legowo Budi Legowo Chasanah, Haniatul Choiri, Dharyl Ubaid Cyntia, Ade Ilham Damayanti, Dina Danes Quirira Octavio Dema Yulianto Devita Yohanie, Dian Dewi, Dea Arien Alinda Dhiniaty Gularso Dian Devita Yohanie Yohanie Dian Fitriani Diana Hariani dina rosita Dwiatmaja, Agus Dwinanda Harsa, Dwinanda Elin Nuraini Eming SUDIANA Encil Puspitoningrum, Encil Eny Lestari Erlyna Wida Riptanti Ernoiz Antriyandarti Etik, Etik Fahruddin Fahruddin Fanaldy, Khusnul Bukhary Fatkhul Imron Fauziah, Muhardila Febriansyah, Aldrin Febrianto, Alvano Fernandez, Frederik Ferucha, Istifani Galih Setiaji Hafifah, Uning Hairul Anam Handayani , Aprilia Dwi Handayani, Triana Dianita Hani Handayani, Hani Hardiansyah, Muhammad Faiz Harjana Harjana Harsojo Harsojo Hery Setiyawan Hidayah, Annisa Nur Hidayat, Asep Munir Hidayatulloh, Sultan himmatul Aliyah, himmatul Husda, Nur Elfi Husin, Syahri Al I wayan Teguh Wibawan Ida Wahyuni Ika Santia Imam Widhiono Indira Djanuarti Iwan Yahya Jatmiko JOKO SUSANTO Joko Sutrisno Juang Kurniawan Syahruzah Julikah, Julikah Karyawati, Karyawati Katminingsih , Yuni Kenedi, Kenedi Khairiyah, Refa'ul Khairiyakh, Refa’ul khusnul khotimah Kinayung, Satria Kirana, Masita Putri Koesuma, Sorja Kristianti , Lina Kuntari, Tiwik Kurniawati Darmaningrum Laela Sagita LAKSONO SUMARTO, LAKSONO Larasati, Anggi Latif Alghifari, Abdul Lestari, Adilla Dwi Putri Limbong, Gresita Fikania Lina Rihatul Hima, Lina Rihatul Linawati, Anissa Listanti, Sinta Nur Rizqi Lucky Prayoga Machsa, Ali Made Sumarti Kardha Made Sumarti, Made Madina, Alifa Putri Maemona, Depi Maharani Maharani, Maharani Mardalena, Ni Nyoman Mar’ati, Fudji Sri Maulidiyah, Adilah Ayu Mega Lestari Melda Gian Priyanita Melisa Anggraini Minar Ferichani Mrihrahayu Rumaningsih Mualimah, Muthiah Muftiyatunnisa, Salmaa MUHAMMAD HASBI Muhammad Iqbal Birsyada Muhammad Sultan, Muhammad Muna, Arifatul Hilmi Isfil Muttaqin, Edwin Nacaska, Nanda Nafisah, Riza Ni Luh Ketut Shanti Antik Safitri, Ni Luh Ketut Shanti Antik Nia Susilo Wardani Niken Wahyu Utami Ningrum, Sekar Tyas Ayu Nisa, Sefiya Khoirun Nonisa, Amanda Novitasari, Atika Nur Anisa Nur Hasanah Nurdiansyah, Fahrizal Nurrahma, Alifia Fauziyah Nuryani Nuryani Okparizan Okparizan Ordas Dewanto Prasasti, Debi Elisa Pratama, Elanda Devi Prihantini, Febrina Nafasati Primantari, FA. Luky Purba, Humbang Purnomo, Yuwono Bimo Purwanto, Agus Tri Putri, Miftahul Zannah Raharjo Rachmawati, Isti Dian Ramadhan, Alauddin Shidqi Ramadhan, Dwinanda Ripta Ratna Ani Lestari Rhodiyah, Annisa Fadwa RINI ADIYANI Ripta, Dwinanda Riwidiharso, Edy Riyani Riyani Rizky, Sri Rokhmah, Trias Istina Rokhmaniyah Rokhmaniyah, Rokhmaniyah Rudi Subiyakto, Rudi Rudianto, April Rully, Aviando Saefurrochman Saefurrochman Safitri, Wulan Erliana Samijo, Samijo SAMPURNANI, SALSABILA Santi Puspitasari Sapja Anantanyu, Sapja Saputri, Ratna Aprilia Saputro, Setiyawan Adi Sari, Widy Retno Sariwibowo, Rindu Warih Selly Rahmawati Septiarani , Dike Septiarani, Dike Setiadi, Hirawan Setiawan, Fajar Budi Setyarso Herlambang, Setyarso Shadiqah, Deta Shalsabila, Adella Sihana Sihana Siregar, Mangihut Siswanta, Siswanta Siswanta, Siswanta Slamet Santoso Sri Erlinda sri marwanti SRI WIJIASTUTI Sucipto Sucipto Sudartoyo, Sudartoyo Sudartoyo, Sudartoyo Sugeng Pamudji sugeng pujileksono, sugeng Sugiarto Danu Sukaryono Sukaryono Sulistyani, Utami Suminar, Novi Ratna SUMIYATI SUMIYATI Supanggyo Supanggyo Supentri Suprapti Supardi Supriyadi Supriyadi Suri, Ima Suryo Widodo Susanto, Arya Bagas Susilaningtyas Budiana Kurniawati Syaharani, Nanda Paquita Syahri Alhusin Syamsul Bakhri Taufik Taufik Tejaarief, Billy TRIO HANDOKO Trisnaningsih Trisnaningsih Triwahana, Triwahana Tualeka, Basa Ali umi barokah Utama, Rajendra Satriya Utami, Yugi Wahyu Pratiwi, Dinda Wahyuningsih, Asih Wati, Ratrika Wibowo, Andy Setyo Wibowo, Bayu Ananto Widodo , Suryo Widowati, Vidya Widyaprasetya, Hery Wijono Winarni, Eka Ayu Tyas WIWIEN ANDRIYANTI Wuri Handayani Yani, Edy Yavina Nugrahanti YUDI PURWANTO Yuni Katminingsih Yusep Purwana Muslih Zandra Dwanita Widodo Zuhriyah, Aminata