Article Per Year (5 Year)
p-Index From 2021 - 2026
3.768
P-Index
This Author published in this journals
All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Sains Matematika dan Statistika JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri Seminar Nasional Teknologi Informasi Komunikasi dan Industri Communications in Science and Technology INTECOMS: Journal of Information Technology and Computer Science Matrik : Jurnal Manajemen dan Teknik Industri Produksi Jurnal Surya Teknika Journal of Applied Materials and Technology Indonesian Journal of Industrial Engineering & Management Newton-Maxwell Journal of Physics IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Jurnal Perangkat Lunak
Rika Taslim
Unknown Affiliation
Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

Published : 25 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 25 Documents
Search

 1   2   3 
Wear Analysis and Corrective Maintenance Worm Screw Press at PT. XYZ Ihsan Hamdy, Muhammad; Taslim, Rika; Andhen Sury, Nyvia
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 1 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i1.18

Abstract

PT. XYZ is one of the palm oil processing companies located in the Riau area. The purpose of this study was to determine the right type of machine maintenance, especially for the worm screw press, because this part often experiences wear and tear which affects the results of pressing palm oil into oil. Wear and tear can partially reduce the surface of the machine and affect the performance of each machine. The service life of the worm screw press provided by the manufacturer is 1000 hours. However, usage at the Sebanga Multi Sawit factory reaches 1300-1500 hours. This proves that there is a need for further studies on good maintenance methods on screw press machines. The calculation of the wear rate and the depth of wear is used to determine the amount of wear that occurs. Solutions that can be done are welding, pack carburizing, and flame hardening on the worm screw press.
Novel colored biomass-waste from food industry sector derived hierarchical porous carbon nanofiber for robust symmetric supercapacitor Nursyaputri, Wan Mery; Fairuzy, Zeeva Khalilah; Khumairah, Zahra; Yanti, Novi; Nursyafni, Nursyafni; Apriwandi, Apriwandi; Taslim, Rika; Taer, Erman
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1534

Abstract

A major challenge in the use of supercapacitor energy storage applications is optimizing 3D-hierarchical porous and 2D nanofiber structures to improve the electrochemical performance of colored biomass-derived activated carbon (AC). Therefore, this study aims to synthesize AC from Dracaena Angustifolia (DA) leaves and dregs using a sustainable method through chemical activation and high-temperature pyrolysis. AC was designed to be adhesive-free to maintain the true mechanical properties of the precursor. Research results showed that the sample of DA-dregs-KOH shows optimal results with a specific surface area (317.66 m2 g-1). The electrochemical performance of hierarchical porous carbon treated with 1 M H2SO4 electrolyte in a 2-electrode system had a nanofiber structure with the highest specific capacitance (248 F g-1) at 1 A g-1 and energy density (12.96 Wh kg-1) with a coulomb efficiency 84.1%. Based on these results, DA dreg-KOH based porous AC with hierarchical porous morphology shows significant potential to be used as binder-free electrode materials that can produce high-performance supercapacitors as a new renewable and sustainable energy storage solution.
Analisis Persediaan Bahan Baku Roti Menggunakan Inventori Probabilistik Back Order dan Lost Sales Okti, Okti Wardani; Surayya Lubis, Fitriani; Suherman; Muhammad Nur; Taslim, Rika
SURYA TEKNIKA Vol 10 No 1 (2023): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v10i1.5021

Abstract

UMKM Richard Bakery merupakan UMKM yang memproduksi roti donat original, donat gula, dan lain-lain. UMKM Richard Bakery memiliki kelemahan dalam penyediaan bahan baku. Diantaranya terjadi keterlambatan dalam memenuhi permintaan bahan baku yang diakibatkan oleh ketidakpastian permintaan pasar terhadap produk. Sehingga dalam menyediakan stok bahan baku menjadi terhambat dalam melakukan pendistribusian dan mengalami kesulitan dalam memenuhi permintaan pasar yang tidak pasti terhadap produk roti donat. Metode Inventori Probabilistik dengan Kebijakan Backorder dan Lost sales digunakan untuk mengoptimalkan tingkat pelayanan dan meminimalkan biaya persediaan. Dalam peramalan pemakaian tepung, metode Moving Average dengan periode n = 10 terpilih sebagai metode terbaik dengan nilai MAPE 10,657%. Hasil peramalan menunjukkan permintaan total tepung sebesar 2.919,41 Kg pada tahun 2022. Sedangkan dalam peramalan pemakaian telur, metode Moving Average dengan periode n = 8 terpilih sebagai metode terbaik dengan nilai MAPE 10,2%. Hasil peramalan menunjukkan permintaan total telur sebesar 13.693,41 butir pada tahun 2022. Setelah melakukan peramalan, dilakukan perhitungan biaya bahan baku menggunakan metode inventory probabilistik sesuai dengan situasi perusahaan. Hasil analisis menunjukkan bahwa model persediaan sistem P back order memberikan biaya persediaan yang paling optimum, yaitu Rp 43.930.885 untuk tepung dengan tingkat pelayanan 99,96%, dan Rp 28.289.892 untuk telur dengan tingkat pelayanan 85,57%.
Self-doped porous carbon derived from acacia plantation residues for green-supercapacitor in sustainable energy applications Apriwandi, Apriwandi; Deniza, Rindhu Nabila; Martin, Awaludin; Julnaidi, Julnaidi; Taslim, Rika; Taer, Erman
Journal of Applied Materials and Technology Vol. 7 No. 1 (2025): September 2025
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.7.1.1-10

Abstract

To improve bio-organic-carbon quality for supercapacitors, consider using dual or more heteroatom for more profitable carbon-chain doping. Developing suitable sources and preparation strategies is challenging but essential. Herein, we introduce a potential carbon source derived from acacia plantation residues, doped with boron, oxygen, and phosphorus. The pore structure of this carbon material can be precisely tuned to exhibit a well-defined hierarchical arrangement of micro-, meso-, and macropores through a low-ratio of phosphoric acid (H?PO?) impregnation method combined with dual-environment (N2 and CO2) vertical pyrolysis in one step integrated. The resulting material displays a confirmed hierarchical morphology with a hierarchical transformation into tunnel pores, in specific surface area of 521.70 m²/g which contributed to high charge storage and deliverability. Additionally, the material contains significant levels of boron (0.93%), oxygen (9.19%), and phosphorus (0.34%), facilitating a reversible Faradic reaction in the working electrode. Consequently, optimized-electrode achieves a specific capacitance of 198 F/g at 1 A/g in H?SO? electrolyte. In a two-electrode system, records energy density of 14 Wh/kg (1 A/g) at a maximum power density of 670 W/kg (10 A/g). These findings suggest that the natural incorporation of boron, oxygen, and phosphorus enhances both the activity and the hierarchical pore structure of carbon derived from acacia plantation residues.
Integrasi Metode OMAX, AHP, dan HIRA dalam Evaluasi Produktivitas dan Risiko Operasional pada UMKM Tahu Juli Andry; Nazaruddin; Nur, Muhammad; Suherman; Taslim, Rika
JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri Vol. 8 No. 2 (2025): APRIL
Publisher : Industrial Engineering, Engineering of Faculty, Universitas Kadiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jatiunik.v8i2.6151

Abstract

Productivity is an important indicator in increasing the efficiency and competitiveness of MSMEs, especially in the tofu industry which faces the challenge of production costs and dependence on imported raw materials. This study aims to measure and increase the productivity of the Pak Budi Tofu Factory through the integration of three methods of Objective Matrix (OMAX), Analytical Hierarchy Process (AHP), and Hazard Identification and Risk Assessment (HIRA). The OMAX method is used to assess productivity based on four main ratios, AHP to determine the priority weight of causative factors, and HIRA to identify internal and external risks that affect productivity. The results show fluctuations in the productivity index during 2023, with the highest value in April (176.82%) and lowest in February (-75.69%). AHP showed raw material efficiency as the dominant factor (weight 0.428), while HIRA revealed the main risks in the form of high worker absenteeism, production machine disruptions, and dependence on imported soybeans. This study concludes that the integration of the three methods can provide a comprehensive productivity analysis and support data-driven decision-making in the MSME sector.
Oxygen/sulphur self-doped tunnel-like porous carbon from yellow bamboo for advanced supercapacitor applications Taer, Erman; Yanti, Novi; Putri, Rahma Lia; Apriwandi, Apriwandi; Martin, Awaludin; Julnaidi, Julnaidi; Chitraningrum, Nidya; Fudholi, Ahmad; Taslim, Rika
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 3: September 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i3.pp2030-2042

Abstract

The 3D hierarchical pore structure with tunnel-like pores is essential to the performance of porous activated carbon (AC) materials used in symmetric supercapacitors. This study aimed to effect of adding (0.3, 0.5, and 0.7) M KOH reagent and heat treatment on the formation of 3D porous, tunnel-like AC derived from yellow bamboo (YB) through N2-CO2 pyrolysis at 850 °C. The AC produced had a high concentration of nanopores, becoming a valuable storage medium with favorable physical-electrochemical properties. The results showed that 0.5-YBAC had the best physical and electrochemical properties, with a carbon purity, 89.16%, micro crystallinity of 7.374 Å, and excellent amorphous porosity. Furthermore, 3D hierarchical pore structure, enriched naturally occurring heteroatoms, dopant of oxygen (10.14%) and sulfur (0.10%). A maximum surface area of 421.99 m² g⁻¹, along with a dominant combination of micro-mesopores. The electrochemical performance test of the 0.5-YBAC electrode showed a Csp of 214 F g⁻¹, with Esp 24.7 Wh kg⁻¹ and Psp 19.2 W kg⁻¹. In conclusion, this study showed the potential of YB stems to enhance the development of supercapacitors, offering superior porosity characteristics for efficient energy storage applications.
Comparative Analysis of Repair Policy and Preventive Maintenance Policy Methods in Machine Maintenance on the Production Floor of PT. Metro Riau Sugandi, Bagus Ahmad; Hamdy, Muhammad Ihsan; Taslim, Rika; Nofirza, Nofirza; Nur, Muhammad
IJIEM - Indonesian Journal of Industrial Engineering and Management Vol 6, No 2: June 2025
Publisher : Program Pascasarjana Magister Teknik Industri Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijiem.v6i2.31177

Abstract

PT. Metro Riau is a newspaper printing company facing significant challenges due to high machine breakdown rates, which have impacted maintenance costs and production output. This study aims to compare machine maintenance costs using repair policy and preventive maintenance policy methods and provide recommendations for the most efficient maintenance approach. The data utilized includes types of breakdowns, maintenance costs, and production rates during the 2023 period. The research employs a quantitative analysis method to calculate repair and preventive maintenance costs based on the probability of breakdowns for each type of machine. The findings reveal that for type A breakdowns, the repair policy is more cost-effective, with a maintenance cost of IDR 143,829 compared to IDR 176,384 for the preventive maintenance policy. Conversely, for type B and C breakdowns, the preventive maintenance policy is more efficient, with costs of IDR 259,616 and IDR 375,950, respectively, compared to the repair policy. Based on these results, it is recommended to implement the repair policy for type A breakdowns and the preventive maintenance policy for types B and C. This combined approach is expected to reduce maintenance costs while enhancing the reliability of the company's production machinery.
Potensi Rotan sebagai Elektroda Karbon Aktif Monolit untuk Aplikasi Superkapasitor Mustika, Widya Sinta; Taer, Erman; Apriwandi; Agustino; Taslim, Rika
Newton-Maxwell Journal of Physics Vol. 4 No. 1: April 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i1.26976

Abstract

Rotan merupakan salah satu produk hutan utama, dengan ketersedian yang cukup berlimpah. Struktur rotan yang terdiri dari gugus polimer (selulosa, hemiselulosa dan lignin) menjadikan rotan berpotensi sebagai karbon aktif. Pemanfaatan rotan sebagai karbon aktif adalah upaya untuk mengkonversi bahan biomassa menjadi produk bernilai ekonomi. Tujuan dari penelitian ini adalah untuk menghasilkan karbon aktif monolit tanpa bahan perekat sebagai elektroda superkapasitor.  Bahan baku rotan dikonversi menjadi karbon aktif monolit  melalui proses karbonisasi (N2, 600 oC) dan aktivasi fisika (CO2, 850 oC) yang terintegrasi. Kemampuan karbon aktif monolit rotan sebagai elektroda superkapasitor ditinjau melalui sifat elektrokimia menggunakan cyclic voltammetric (CV). Penelitian ini berhasil mengubah rotan menjadi   elektroda karbon aktif monolit tanpa bahan perekat, dengan kemampuan elektrokimia sebesar 104 F g-1 dengan laju pemindaian 1 mV s-1, menggunakan konfigurasi elektroda lapisan ganda dengan elektrolit 1 M H2SO4. Elektroda karbon aktif monolit rotan juga menunjukkan densitas sebesar 1,04 g cm-3, yang menunjukkan potensi kehadiran struktur pori yang baik.
Analisis Keamanan Dan Kedisiplinan Lingkungan Kerja di Area Bleaching, Fiberline II, PT Riau Andalan Pulp and Paper Menggunakan Metode 6S Taslim, Rika; Hidayatullah, Aditya Rizky; Nur, Muhammad
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2023: SNTIKI 15
Publisher : UIN Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT. Riau Andalan Pulp and Paper (RAPP) merupakan salah satu perusahaan yang memproduksi pulp dan kertas. PT. Riau Andalan Pulp and Paper (RAPP) memiliki beberapa business unit seperti Riau Pulp (RPL), Riau Andalan Kertas (RAK), Riau Prima Energi (RPE) dan Riau Fiber, Salah satu Area unit Riau Pulp adalah fiberline. Fiberline merupakan tempat dilakukannya pembuatan pulp. Pada pengolahan data, data yang akan diolah adalah data primer yaitu pengamatan kondisi lingkungan kerja pada area bleaching menggunakan metode 6S, Pada area bleaching ini terdapat kondisi lingkungan kerja yang belum sesuai dengan standarisasi/ performa 6S yang telah ditetapkan. Permasalahan pertama yang ditemukan pada saat melakukan audit terdapat dua electric socket yang rusak dan tidak tertutup, permaslahan kedua ditemukannya keran yang tidak kencang, permasalahan ketiga ditemukannya suatu jadwal kegiatan yang tidak update, lalu Perofrma 6S yang ditemukan selanjutnya ialah adanya daily management dalam bentuk visual management board dan kondisi sebuah barang yang tidak terpakai masi berada di area kerja. Setelah melakukan kerja praktik dan memperhatikan segala kegiatan yang ada di PT. Riau Andalan Pulp and Paper tepatnya bleaching dapat disimpulkan bahwa kondisi lingkungan pada area bleaching masih memerlukan perbaikan untuk meningkatkan keamanan serta kedisplinan dalam bekerja pada area Bleaching.
Pengukuran Beban Kerja Mental pada Stasiun Milling yang Terdampak Penyusutan Karyawan Pasca Pandemi Covid-19 Menggunakan Metode NASA-TLX Taslim, Rika; Perdana, Muhammad Bayu Tesri; Nur, Muhammad
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2023: SNTIKI 15
Publisher : UIN Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pasca pandemi Covid-19 banyak sektor-sektor perekonomian yang terdampak di Indonesia salah satunya ialah pengolahan karet setengah jadi atau crumb rubber. Hal ini juga dirasakan oleh PT. Andalas Agro Lestari perusahaan bergerak di bidang pengolahaan crumb rubber, PT. Andalas Agro Lestari harus melakukan pengurangan karyawan secara besar-besaran. Sehingga menimbulkan masalah baru bagi karyawan yakni masalah beban kerja mental dan fisik pada karyawan perusahaan tersebut. Tujuan penelitian ini untuk menentukan faktor yang mempengaruhi beban kerja karyawan khususnya stasiun kerja milling serta menawarkan usulan perbaikan. Penelitian kali ini menggunkan metode NASA-TLX untuk menentukan nilai beban kerja yang dialami karyawan. Hasil dari perhitungan yang dilakukan pada penelitian kali menunjukan rata-rata skor WWL adalah 73,46 dengan kategori tinggi. Setelah dilakukan perhitungan maka diketahui faktor penyebab tingginya beban kerja karyawan ialah target produksi yang tidak sesuai dengan jumlah karyawan. Beberapa saran perbaikan yang bisa dilakukan adalah menyesuaikan lagi target produksi dengan jumlah perkerja dan melakukan kegiatan yang meningkat semagat kerja.
Co-Authors Achmad Noerkhaerin Putra Agustino Agustino Agustino, Agustino Ahmad Fudholi Andhen Sury, Nyvia Andika Afrianda april, Muhammad Dhany Aprilia Pratama Apriwandi Apriwandi . Awaludin Martin Chitraningrum, Nidya Deniza, Rindhu Nabila Erman Taer Fachry Abda El Rahman Fadli Perdana Yuda Fadli Perdana Yuda Fairuzy, Zeeva Khalilah Fitri Aryani Gunawan, Resky Hamdy, Muhammad Ihsan Hardanto, Lilik Tri Harpito Harpito, Harpito Hartati , Misra Hartati, Misra Hasanah, Fainida Hidayatullah, Aditya Rizky Ihsan Hamdy, Muhammad Iwantono Iwan Barnawi Juli Andry Julnaidi, Julnaidi Khumairah, Zahra Kresna, Pharada Lubis, Fitriani Surayya Lutfi Rindang Lestari Mayuta, Fadhila Putra Melda Riyani Butet Misra Hartati Muhammad Ihsan Hamdy Muhammad Isnaini Hadiyyul Umam Muhammad Nasir Muhammad Nur Muhammad Nur Mustika, Widya Sinta N. Nazaruddin Nazaruddin Nofirza Nofirza Nursyafni, Nursyafni Nursyaputri, Wan Mery Okti, Okti Wardani perdana, Muhammad Bayu Tesri Pratiwi, Lini Purba, Cenora Evelynza Putri, Rahma Lia Rahmi Dewi Rakhmawati Farma Satrio, Tedy Sinta Mustika, Widya Suardi, Syafarudin Sugandi, Bagus Ahmad Suherman Suherman, Suherman Suraya Lubis, Fitriani Surayya Lubis , Fitriani Surayya Lubis, Fitriani Tanjung, Rindi Aini Tengku Nurainun Umam, Muhammad Isnaini Hadiyul Wetya Fatma Kumala Sari Yudistia, Fiki