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All Journal Jurnal Ilmu Dasar Jurnal Sains dan Teknologi JFA (Jurnal Fisika dan Aplikasinya) Science and Technology Indonesia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Kreativitas PKM JIEMS (Journal of Industrial Engineering and Management Systems) Jurnal Teori dan Aplikasi Fisika Piston: Journal of Technical Engineering Jurnal Fisika Indonesia Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Journal of Energy, Material, and Instrumentation Technology RENATA Jurnal Pengabdian Masyarakat Kita Semua
Pulung Karo-Karo
Universitas Lampung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Pengaruh Variasi Penambahan Abu Ampas Tebu dan Serat Ampas Tebu Terhadap Sifat Fisis dan Mekanis Pada Mortar Muhammad Nursani; Pulung Karo Karo; Yanti Yulianti
Jurnal Fisika Indonesia Vol 24, No 3 (2020)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfi.v24i3.55989

Abstract

Penelitian tentang pengaruh variasi penambahan abu ampas tebu dan serat ampas tebu terhadap sifat fisis dan mekanis pada mortar telah dilakukan. Bahan-bahan yang digunakan dalam penelitian ini antara lain abu ampas tebu, serat ampas tebu, semen portland, CaCl dan air. Abu ampas tebu diperoleh dari pembakaran ampas tebu pada suhu 700 ˚C selama 2 jam. Serat ampas tebu diperoleh dari pencacahan ampas tebu menggunakan mesin disk mill dengan ayakan berukuran 5 mm. Perbandingan semen, abu ampas tebu dan serat ampas tebu yang digunakan yaitu sampel A (90%:0%:10%), sampel B (85%:5%:10%) dan sampel C (80%:10%:10%), dengan penambahan CaCl sebesar 5% dari massa total dan 250 ml air. Pengujian yang dilakukan yaitu uji fisis (daya serap air dan kerapatan) dan uji mekanis (kuat tekan, kuat lentur dan kuat tarik belah) serta karakterisasi scanning electron microscope-energy dispersive x-ray spectroscopy (SEM-EDS). Mortar sampel A masuk dalam kategori mortar tipe S dengan kuat tekan sebesar 132,28 kg/cm2, mortar sampel B masuk dalam kategori mortar tipe M dengan kuat tekan sebesar 176,16 kg/cm2 dan mortar sampel C masuk dalam kategori mortar tipe S dengan kuat tekan sebesar 170,68 kg/cm2, secara keseluruhan sampel C memiliki nilai yang lebih tinggi baik secara fisis maupun mekanisnya, mikrostruktur sampel C lebih baik dibandingkan sampel A dan B karena memiliki butiran yang lebih kecil serta terdapat banyak gumpalan yang menyebabkan ukuran pori mengecil sehingga kerapatannya meningkat, penambahan abu ampas tebu meningkatkan jumlah unsur oksigen yang dapat menambah kekuatan mekanis mortar.
Pendampingan Pengelolaan Website Desa Hajimena sebagai Penunjang Program Digitalisasi Desa Iqbal Firdaus; Simon Sembiring; Agus Riyanto; Rudy Situmeang; Pulung Karo Karo
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 5, No 10 (2022): Volume 5 No 10 Oktober 2022
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v5i10.7638

Abstract

ABSTRAK Desa Hajimena merupakan salah satu desa yang berada di Kecamatan Natar Lampung Selatan. Infrastruktur fasilitas umum dan pendidikan sudah sangat memadai untuk memenuhi kebutuhan dasar dan pendidikan masyarakat setempat. Kelengkapan infrastuktur yang ada di desa hajimena belum didukung oleh perkembangan sistem informasi yang memadai salah satunya adalah media informasi desa berbasis website. Media informasi desa sangat diperlukan untuk mengikuti perkembangan teknologi informasi yang sangat pesat, dewasa ini tuntutan terhadap sistem informasi berbasis komputer dan internet hampir di segala bidang, baik pemerintahan, industri, bisnis pendidikan, dan bidang lainnya. Permasalahan tersebut mendorong untuk membuat sekaligus membina perangkat desa untuk mengelola website Desa sebagai sarana informasi digital yang di dalamnya terdapat layanan administrasi desa, pelayanan desa, dan profil desa. Metode yanga digunakan pada kegiatan pengabdian kepada masyarakat menggunakan teknik ceramah, praktik, dan diskusi. Hasilnya kegiatan pengabdian yang telah dilakukan, masyarakat mampu memahami terkait pengelolaan website khususnya adalah operator desa, hal ini didukung dengan terjadi peningkatan pencapaian TIK sebesar 83,5% yang sebelum kegiatan pengabdian yaitu 41,83 %. Hal ini menunjukkan bahwa terjadi peningkatan pengetahuan dan kemampuan masyarakat tentang pengelolaan website Desa. Kata Kunci: Hajimena, Layanan, Informasi Digital, Website Desa,   ABSTRACT Hajimena Village is one of the villages in Natar District, South Lampung. The infrastructure of public facilities and education is very adequate to meet the basic needs and education of the local community. The completeness of the existing infrastructure in the Hajimena village has not been supported by the development of sufficient information systems, one of which is the website-based village information media. Village information media is very necessary to keep up with the very rapid information technology, this development of computer and internet-based information systems in almost all fields, be it government, industry, business, education, and other fields. This problem encourages the creation and development of village officials to manage the Village website as a means of digital information in which there are village administration services, village services, and village profiles. The method used in community service activities uses lecture, practice, and discussion techniques .The results of the service carried out, the community is able to understand the management of the website, especially village operators, this is supported by an increase in ICT by 83.5% before service activities, which is 41.83%. This shows that there is an increase in community knowledge and ability about managing the Village website. Keywords: Hajimena, Service, Digital Information, Village Website,
The Effect of Cacao Leaf Extract as An Inhibitor with A Concentration Variation of 0%, 3%, 5%, And 7% on The Corrosion Rate of St 37 Steel with Immersion Time of 3 Days And 6 Days in NaCl Corrosive Medium 3% Nia Diana; Ediman Ginting; Pulung Karo Karo
Journal of Energy, Material, and Instrumentation Technology Vol 3 No 4 (2022): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v3i4.114

Abstract

This study aims to determine the effect of adding inhibitors of cacao leaf extract with concentrations of 0%, 3%, 5%, and 7% in 3% NaCl corrosive medium on the corrosion rate of St 37 steel, knowing the effect of cacao leaf extract in inhibiting the corrosion rate of St 37 steel in NaCl solution and knowing the microstructure, phase, and corrosion products on St 37 steel after immersion in NaCl solution. The weight loss method was carried out to determine the value of the resulting corrosion rate. The Fourier transform infrared (FTIR) analysis showed the presence of tannins in the cacao leaf extract. The X-ray Diffraction (XRD) result shows that the formed phase is pure Fe. It is reinforced by the Energy Dispersive Spectroscopy (EDS) result, which shows that the more lumps on the steel surface, the fewer Fe elements, and the more FeO corrosion product. Scanning Electron Microscopy (SEM) results show the presence of lumps of various sizes and black holes resulting from corrosion.
PENGARUH PENAMBAHAN ABU TONGKOL JAGUNG TERHADAP SIFAT FISIS DAN MEKANIS PADA MORTAR Pulung Karo Karo; Rio Orlando Pratama; Roniyus Marjunus
Journal of Energy, Material, and Instrumentation Technology Vol 4 No 1 (2023): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v4i1.142

Abstract

The research was carried out about the effect of adding corn cob ash on mortar's physical and mechanical properties. Mortar was molded with three compositions, i.e., portland cement, corn cob ash, and corn husk fiber. Corn cob ash was burned at a temperature of 700  for 2 hours. Corn husk fiber was mechanically sliced up to 0.8 mm in size. Then, mortar molding and maintenance were processed for 28 days. The mortars that had reached the age of 28 days were tested according to the Indonesian National Standard (SNI), including physical properties (density) and mechanical properties (compressive strength, flexural strength, splitting tensile strength). Characterization of microstructure, morphology, and composition of all elements on the mortar's surface was processed using Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS). The research results show the influence of adding corn cob ash on mortar's physical and mechanical properties. The mortar with the most optimum physical and mechanical properties has a composition of 82:6:12. The characterization results using SEM-EDS show that the surface of this composition sample is better than other samples. The most dominant elements in the mortar are elements of Ca and Si, which function as mortar binders and hardeners.
Burn-Up Analysis of Plutonium and Minor Actinide Recycling on Gas Cooled Fast Reactor (GCFR) Using SRAC COREBN Ahmad Saiful Munir; Yanti Yulianti; Suprihatin Suprihatin; Pulung Karo Karo
Journal of Energy, Material, and Instrumentation Technology Vol 4 No 1 (2023): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v4i1.181

Abstract

Research on the analysis of recycling, plutonium, and minor actinides in the Gas Cooled Fast Reactor (GFCR) using SRAC COREBN has been done. This research uses a fuel mixture of uranium, plutonium, and minor actinides. The analysis was conducted with computational simulation using the COREBN code, an additional code to SRAC. The purpose of this research is to find out the influence of the addition of plutonium and actinide on the composition of nuclear fuel at the end of reactor operation and the limitation of the value of the multiplication factor (keff at the end of the reactor burn up period). Found in this research is the final value, the multiplication factor (keff) of 1.19964, and the conversion ratio value of 0.766813 in the burn-up period of 1515 days as well as the maximum power density value of 125.85 watts/cm³, the relative power density value at the radius y of 1,230263 and radius x equal to 1.19737 the atomic density value experienced a change in the number of nuclides in the types of nuclides U235, U238, Pu239, Pu241, Np237, and Am243 at the end of the burn-up period.
Effect of CaCO3 Levels on Formation Phase Material BSCCO-2212 superconductor with Method Mixing Wet Elsa Mega Puspitaratu; Suprihatin Suprihatin; Pulung Karo karo; Ediman Ginting Suka
Journal of Energy, Material, and Instrumentation Technology Vol 4 No 2 (2023): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v4i2.47

Abstract

It has been done a variation of CaCO 3, which is 0.95; 1.00; 1.05; and 1,10, through phase formation of BSCCO-2212 superconductor using a wet-mixing method. Samples were dissolved with HNO 3 and distilled by water slowly until the color was clean blue, then gradually dried out at temperatures of 300, 400, and 600 °C. The samples were calcined for 10 hours at 800°C and sintered at 820°C for 20 hours. The XRD's characterization results show that the highest volume fraction was 76.65% in the Ca 1.05 sample. The lowest volume fraction was 49.85% in the Ca 1.10 sample. Meanwhile, the highest degree of orientation was 44.27% in the Ca 1.00 sample, and the lowest degree of orientation was 8.58% in the Ca 1.10 sample. SEM's characterization shows that all samples have been oriented and relatively little space between slabs (voids).
Efek Penambahan Fe3Mn7 Terhadap Sifat Fisis dan Mekanik α-Fe2O3 Eko Arief Setiadi; Wini Rahmawati; Pulung Karo Karo; Muhammad Yunus; Perdamean Sebayang
Piston: Journal of Technical Engineering Vol 1, No 1 (2017)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v1i1.547

Abstract

Preparasi dan karakterisasi pellet α-Fe2O3 dengan penambahan 0, 2, 5 dan 10 %wt. Fe3Mn7 berbasis pada material alam telah berhasil dilakukan. Proses pencampuran serbuk α-Fe2O3 dan Fe3Mn7 dilakukan dengan menggunakan HEM. Kemudian campuran serbuk dikasinasi pada suhu 1000 ºC, dikompaksi pada 69 Pa hingga menjadi pellet dan disinter pada suhu 1000 ºC. Karakterisasi XRD menunjukkan adanya fasa dominan α-Fe2O3 dan fasa baru MnO2 dan Fe3O4. Densitas dan kekerasan sampel meningkat secara linier seiring dengan kenaikan komposisi Fe3Mn7 yang ditambahkan. Sampel optimum diperoleh pada sampel α-Fe2O3/10 %wt. Fe3Mn7 dengan nilai bulk density dan kekerasan masing-masing 4,98 g/cm3 and 994,94 HV. Sampel ini termasuk dalam klasifikasi hard magnet dengan nilai magnetisasi saturasi, remanen dan koersivitas masing-masing sebesar 24,0 emu/g, 10,3 emu/g dan 571,8 Oe.
Synthesis of Silver Nitrate by Evaporation Chemical Reduction Process as Potential Materials for Silver Nanowires Application Junaidi; Malik, Daffa Abdul; Rizki, Muhammad; Pratiwi, Indah; Karo-Karo, Pulung; Marjunus, Roniyus; Asmi, Dwi; Hadi, Sutopo
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.642-650

Abstract

In this study, we conducted the extraction of silver nitrate (AgNO3) using the chemical reduction evaporation method, involving silver metal (Ag) with a molarity of 7.716 M and nitric acid (HNO3). The heating process via evaporation was carried out at 85oC for 2 hours. Subsequently, the synthesis of silver nanowires (AgNWs) was performed using a 0.3 M of AgNO3 solution in ethylene glycol (EG), polyvinyl pyrrolidone (PVP), and Iron (III) Chloride hexahydrate (FeCl36H2O). XRD analysis of the AgNO3 sample revealed an orthorhombic crystal structure with a single AgNO3 phase peak. In AgNWs, three crystalline phases were observed, with the Ag phase being the most dominant. The average crystal size of AgNO3 and AgNWs was 109.42 nm and 22.06 nm, respectively. The average crystal size of the AgNO3 sample may be influenced by the aggregation between crystal nuclei during the heating process. XRF analysis indicated a 98.84% Ag concentration in AgNO3. SEM-EDS analysis showed that the AgNO3 sample had a non-aggregated morphological structure, with particle size measuring 49.46 μm and an overall AgNO3 purity of 92.68%. The SEM image of the AgNWs sample displayed a very homogeneous diameter of ∼200 nm with a length of around 10-20 μm. Meanwhile, AgNWs exhibited a morphology resembling rod-shaped wires with a purity of 68% for Ag.
Peningkatan Kompetensi Guru IPA SD di Kecamatan Metro Utara Melalui Pelatihan Pembuatan dan Pengembangan Alat Peraga Fisika Supriyanto, Amir; Pauzi, Gurum Ahmad; Karo-Karo, Pulung; Syafriadi, Syafriadi; Abdurrahman, Ahmad Faruq; Aprilia, Ayu
RENATA: Jurnal Pengabdian Masyarakat Kita Semua Vol. 2 No. 3 (2024): Renata - Desember 2024
Publisher : PT Berkah Tematik Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61124/1.renata.91

Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan kompetensi guru IPA SD di Kecamatan Metro Utara dalam merancang dan mengembangkan alat praktikum sederhana untuk mendukung pembelajaran IPA, khususnya Fisika. Pelatihan ini mencakup ceramah, diskusi dan praktik pembuatan media praktikum. Media praktikum yang dibuat antara lain media pembelokan cahaya, konveksi pada zat cair dan termometer sederhana. Evaluasi dilakukan melalui pre-test dan post-test untuk mengukur perubahan pengetahuan dan keterampilan guru. Rata-rata nilai peserta pelatihab meningkat signifikan dari 26,92% menjadi 63,08%. Hal ini menunjukkan efektivitas pelatihan dalam meningkatkan pemahaman konsep dan keterampilan praktikum. Hal ini diharapkan berdampak positif pada kualitas pembelajaran IPA di tingkat sekolah dasar, menjadikan Fisika sebagai mata pelajaran yang menarik dan mudah dipahami oleh siswa. Kata kunci: guru IPA SD; alat praktikum sederhana; pembelajaran Fisika; evaluasi pelatihan Abstract This community service activity aims to enhance the competencies of elementary science teacher in Metro Utara in designing and developing simple practical tools to support science learning, especially Physics. The training involved lectures, discussions, and practical sessions to create simple practical media, such as tools for demonstrating convection in liquids, light reflection, and simple thermometer construction. Evaluation was conducted through pretest and posttest to measure changes in the teachers ‘knowledge and skill. The participants’ average scores increased significantly from 26,92% to 63,08%, indicating the training’s effectiveness in improving conceptual understanding and practical skills. These results are expected to positively impact the quality of science education at the elementary level, making Physics an engaging and easily understood subject for student. Keywords: elementary science teachers; simple practical tools; Physics learning; training evaluation
Pelatihan Pembuatan Pupuk dan Monitoring Suhu Menggunakan Alat Pembuat Pupuk Kompos Telaumbanua, Mareli; Karo-Karo, Pulung; Syah, Aminudin; Telaumbanua, Syukur; Indriyawati, Agapetalia
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 5 No. 3 (2024)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v5i3.180

Abstract

Pupuk kompos berbahan limbah pertanian/peternakan belum termanfaatkan secara optimal oleh petani/peternak. Mitra kelompok tani di Desa Rejomulyo memiliki pengetahuan dan keterampilan yang kurang dalam pembuatan pupuk kompos. Selain itu, proses pembuatan pupuk kompos yang ditandai dengan kenaikan suhu sulit dipantau. Oleh karena itu, petani memerlukan prosedur tahapan pengolahan pupuk kompos dengan monitoring suhu. Tujuan kegiatan ini adalah meningkatkan pengetahuan dan keterampilan melalui pengolahan pupuk kompos dengan menerapkan alat pembuat pupuk kompos. Metode pelaksanaan kegiatan terdiri dari sosialisasi, diskusi, tanya jawab, demonstrasi dan praktik. Evaluasi kegiatan pengabdian menunjukkan adanya peningkatan pengetahuan mitra kelompok sebesar 44,85% dan keterampilan sebesar 50,00%. Dengan demikian, pengabdian ini telah berhasil meningkatkan pengetahuan dan keterampilan mitra dalam pembuatan pupuk kompos dan aplikasi alat.
Co-Authors Abdurrahman, Ahmad Faruq Achmad Shofi Agus Riyanto Ahmad Faruq Abdurrahman Ahmad Saiful Munir Alfi Hamidah Amilia Rasitiani Amir Supriyanto Anggun Mersilia Anton Sapto Handoko Aprilia, Ayu Apriliana Apriliana Aris Pratama Ayu Aprilia Bambang Joko Suroto Birawidha, David Candra Candra Kurniawan Delfi Oktavia Amrani Dwi Asmi Ediman Ginting Ediman Ginting Ediman Ginting Ediman Ginting Ediman Ginting Ediman Ginting Suka Ediman Ginting Suka Eko Arief Setiadi Elsa Mega Puspitaratu Fajar Nurjaman Fitri Fitri Gurum Ahmad Pauzi Herullah Herullah Indah Pratiwi Indriyawati, Agapetalia Intan Wandira Iqbal Firdaus Ismi Nurhayati Isnugroho, Kusno Iwan M Ridwan Jayanti Pusvitasari Jennifer Kapriati Pakpahan Junaidi Junaidi Junaidi Junaidi Karlina Rahmah Malik, Daffa Abdul Mareli Telaumbanua Marjunus, Roniyus Muhammad Amin Muhammad Amin Muhammad Nursani Muhammad Rizki Muhammad Yunus Nabilah Rafidiyah Nia Diana Nindia Agustin Oktaviando, Fany Oktivianty, Shella Windi Parmadean Subayang Pauzi, Gurum Ahmad Perdamean Sebayang Posman Manurung R Rosalina Rianita Nurhasanah Rio Orlando Pratama Riski Wulan Sari Risky Putra Ramadhan Rizky Damayanti Rudy T M Situmeang S Suprihatin Sembiring, Simon Shella Windi Oktivianty Simon Sembiring Simon Sembiring Simon Sembiring Simon Sembiring Slamet Sumardi, Slamet Sri Harjanti Suci Pangestuti Sudibyo Sudibyo Suprihatin Suprihatin Suprihatin Suprihatin Suprihatin Suprihatin Suprihatin Suprihatin Supriyanto, Amir Sutopo Hadi Syafriadi Syafriadi Syafriadi Syafriadi Syah, Aminudin Telaumbanua, Syukur Trianasari Trianasari Trianasari, Trianasari Vega Rahmawati Ar Wahyuningsih Wahyuningsih Wasinton Simanjuntak Wasinton Simanjuntak Wini Rahmawati Wisnu Ari Adi Yanti Yulianti Yanti Yulianti Yanti Yulianti Yayat Iman Supriyatna Yayat Iman Supriyatna Yohanes W.M Purba Yusup Hendronursito, Yusup Zahra Maria Ulfa