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All Journal Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal ABDINUS : Jurnal Pengabdian Nusantara Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Inovasi Pendidikan dan Sains SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Senopati : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering JOURNAL OF COMMUNITY ENGAGEMENT AND EMPOWERMENT TRANSFORMASI : JURNAL PENGABDIAN PADA MASYARAKAT JUSTI (Jurnal Sistem dan Teknik Industri) JOSSE: Journal of Economics and Social Sciences Jurnal Teknologi dan Manajemen Sistem Industri International Journal of Engineering Continuity Dedication : Jurnal Pengabdian Masyarakat Journal of Information System, Technology and Engineering Journal of Social Science and Economics Jurnal Pengabdian Sosial Ngaos: Jurnal Pendidikan dan Pembelajaran KIC Journal of Green Science and Technology
Amalia Ma’rifatul Maghfiroh
Universitas Bojonegoro
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam Amalia Ma'rifatul Maghfiroh
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 9 No. 1 (2024)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v9i1.32597

Abstract

Noise is an unpleasant/undesirable sound. Apart from noise, environmental problems are often faced by the community in the form of organic and inorganic waste resulting from several small/large industrial activities. Organic waste often encountered is young coconut fiber from activities in traditional markets. Paper waste comes from teaching and learning activities/offices. Styrofoam waste is included in the category of inorganic waste, which is very difficult to decompose, so it has a bad impact on the environment. Based on this, a composite was made from coconut fiber, paper and styrofoam so that it could be used as a sound absorber. Cylindrical composite specimens were made with different variations in composition and analyzed the differences in sound dampening ability in various compositions. The sound absorption capacity of the composite was measured at frequencies of 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1,000 Hz, 2,000 Hz and 4,000 Hz. The composite acoustic test results obtained for samples A, B and C showed that the highest absorption energy was 49.57 dB at a frequency of 750 Hz for sample C. Meanwhile, the lowest absorption energy was 1.15 dB at a frequency of 500 Hz for sample A. The sound absorption coefficient values ​​were obtained for all variations. The frequencies of samples A, B and C have good absorption coefficient values, namely ≥ 0.2. The lowest absorption coefficient value was 2.01 at a frequency of 750 Hz for sample C and the highest was 46.67 at a frequency of 500 Hz for sample A.
Analysis of the Implementation of Total Productive Maintenance (TPM) Using Overall Equipment Effectiveness (OEE) : (Case Study of PT. Pertamina Hulu Rokan Jambi Merang) Sudirnanto; Amalia Ma’rifatul Maghfiroh; Rizky Stighfarrinata
Journal of Social Science and Economics Vol. 1 No. 1 (2022): Journal of Social Science and Economics
Publisher : Journal of Social Science and Economics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37812/josse.v1i1.542

Abstract

Basically, the control of maintenance/maintenance can be determined according to business needs and operating conditions. However, changes may occur and require adjustment from time to time. So every part of the maintenance needs to organize the system effectively. In this regard, it is important for management to pay attention to analyzing the implementation of Total Productive Maintenance (TPM) on maintenance work. At the SKN Plant which is the Central Gas Plant there are several gas processing processes, one of which is the Amine System or CO2 Removal which functions to reduce the level of CO2 contained in gas production. In the Amine System or CO2 removal process there are several equipment to support the process One of these is the Amine Circulation Pump (SK 25 P 05 A/B) which runs continuously alternately unit A and unit B. To maintain the pump's performance, the company performs maintenance by implementing a Total Productive Maintenance (TPM) system. The extent to which the effectiveness of the implementation of the TPM system carried out by Pertamina Hulu Rokan Jambi Merang, the author will analyze using the Overall Equipment Effectiveness (OEE) approach to the Amine Circulation Pump (SK 25 P 05 A/B). The formulation of the problem in this research is the application of Total Productifities Maintenance (TPM) on the Amine Circulation Pump (SK 25 P 05 A/B) in the CO2 removal process (Amine System) using the Overall Equipment Effectiveness (OEE) approach with the aim of knowing the level of reliability of the pump. Amine Circulation (SK 25 P 05 A/B) in the CO2 removal process (Amine System) using the Overall Equipment Effectiveness (OEE) approach. The results of this study are the average Overral Equipment Effectiveness value at PT Pertamina Hulu Rokan Jambi Merang on the amine circulation pump engine SK 25 P05 A/B from January-December is 56.68%. Based on the analysis of Overall Equipment Effectiveness, the current maintenance system is not optimal because it is not in accordance with the standards set by JIPM of > 85%.
Pengaruh Keselamatan dan Kesehatan terhadap Kinerja Karyawan PT. Daya Patra Arum, Sulistyorini; Ma'rifatul M, Amalia
Jurnal Teknologi dan Manajemen Sistem Industri Vol. 1 No. 2 (2022): Jurnal Teknologi dan Manajemen Sistem Industri (JTMSI) - SEPTEMBER
Publisher : Universitas Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.741 KB) | DOI: 10.56071/jtmsi.v1i2.429

Abstract

Performance is the most important aspect in achieving goals with maximum results from the performance of a good team or individual company. And vice versa, failure to achieve the formulated goals is the result of inefficient team or individual performance. the influence of employee safety and health on employee performance greatly determines the company's progress, this is due to the maximum worker conditions that will affect the results of their performance. This research uses multiple linear regression method because it uses x and y variables. In the regression method we have to distribute questionnaires to the respondents we are aiming for. This calculation uses the Multiple Linear Regression method with employee performance as the dependent variable (Y) and employee health and safety as the influencing variable (X). From the results of multiple linear regression analysis, it was found that the variable Health (X1) did not affect employee performance (Y) and safety (X2) had a linear effect on employee performance (Y). With a linear result Y = 1.652 –0.120 x1 + 1.046 x2.
Strategi Pemanfaatan Limbah Peternakan Lokal Sebagai Pupuk Organik Cair Dalam Mendukung Produktivitas Pertanian Di Desa Sugihwaras Saraswati, Saraswati; Refani, Reza Septiana; Maghfiroh, Amalia Ma’rifatul
Jurnal Pengabdian Sosial Vol. 1 No. 10 (2024): Agustus
Publisher : PT. Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/ztd24a71

Abstract

Permasalahan pada ketergantungan pupuk hingga saat ini masih belum terselesaikan. Tujuan dari pengabdian masyarakat ini memberikan penyuluhan dan pelatihan kepada petani untuk pembuatan Pupuk Organik Cair (POC) di Desa Sugihwaras Kecamatan Ngraho Kabupaten Bojonegoro.  Sasaran dalam pelatihan ini adalah petani desa Sugihwaras kecamatan Ngraho kabupaten Bojonegoro. Metode yang dilakukan terdapat beberapa tahapan yaitu persiapan dan pelaksanaan. Proses pada setiap tahapan metode dilakukan koordinasi secara bertahap oleh PPL (Penyuluh Pertanian Lapangan), agar memberikan hasil yang maksimal dan lebih efisien. Memanfaatkan limbah peternakan berupa urin kambing untuk dijadikan pupuk organik cair sebagai alternatif dalam mengatasi kelangkaan serta ketergantungan pupuk kimia. Hasil dari pupuk organik cair diaplikasikan pada tanaman toga. Pelatihan ini juga memiliki tujuan untuk mengurangi polusi lingkungan dan juga dapat digunakan untuk kebutuhan petani terhadap pupuk yang semakin mahal dan susah payah diperoleh. Pelatihan pupuk organik cair yang telah dulakukan memberikan banyak manfaat kepada para petani seperti meningkatkan pengetahuan dan pemahaman petani dalam pembuatan pupuk organik cair yang ditandai dengan kemampuan petani untuk membuat pupuk organik cair setelah pelatihan. Dengan tersedianya pupuk organik cair maka kebutuhan petani terhadap pupuk dapat terpenuhi dan mengurangi ketergantungan terhadap pupuk kimia.
Pemanfaatan Tempe Sebagai Bahan Dasar Pembuatan Brownies Tempe Di Desa Sugihwaras Kecamatan Ngraho Refani, Reza Septiana; Saraswati, Saraswati; Maghfiroh, Amalia Ma’rifatul
Jurnal Pengabdian Sosial Vol. 1 No. 10 (2024): Agustus
Publisher : PT. Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/pekes022

Abstract

Pengembangan produk pangan berbasis kearifan lokal dapat dijadikan ide untuk memberdayakan masyarakat Desa Sugihwaras. kearifan lokal bersumber dari sumber daya lokal. Permasalahan yang sering muncul adalah bahan pangan lokal belum mendapat perhatian khusus dari masyarakat setempat, apabila produk dikembangkan menjadi produk yang inovatif, tentu hal tersebut dapat menjadi potensi nilai jual yang menarik. Kegiatan pelatihan ditujukan untuk menarik masyarakat dalam penggunaan bahan pangan lokal sebagai sekitar bahan tambahan dalam pembuatan brownies, serta memberikan pengetahuan dan pemahaman tentang cara lain mengolah produk tempe yang tidak hanya bisa diolah menjadi lauk atau makanan pendamping nasi saja namun dapat diolah menjadi brownies. Pembuatan produk ini ditujukan kepada ibu-ibu pengurus PKK, di Desa SugihwarasMetode yang digunakan dalam pelatihan adalah diskusi, pemaksaan dan praktek langsung membuat brownies tempe.Para peserta sangat antusias dalam proses pembuatan brownies. Dalam kegiatan proses pembuatan hingga masak, acara hiburan yang menambah antusias ibu-ibu PKK, keberhasilan dari pelatihan pembuatan brownies dilihat dari brownies yang mengembang dan rasa yang enakTempe merupakan makanan tradisional dari Indonesia, khususnya Pulau Jawa. Pengrajin tempe banyak ditemukan di Pulau Jawa khususnya di Desa Sugihwaras Kecamatan Ngraho Kabupaten Bojonegoro. KKN kelompok 16 kemudian berupaya untuk mengkreasikan produk tempe menjadi brownies yang bertujuan untuk membantu masyarakat dan pelaku usaha yang ada di Desa Sugihwaras untuk meningkatkan kreativitas dengan menciptakan produk agar dapat menjadi potensi serta memiliki nilai jual. Kegiatan pelatihan pembuatan brownies tempe ini berkolaborasi dengan ibu-ibu PKK di Desa Sugihwaras Kecamatan Ngraho Kabupaten Bojonegoro.
The Solar Water Pump For Agriculture Irrigation For Community Village In Jono Temayang Bojonegoro Maghfiroh, Amalia Ma'rifatul; Anisa, Zuffa; Mushthofa, Mushthofa
TRANSFORMASI : JURNAL PENGABDIAN PADA MASYARAKAT Vol 4, No 3 (2024): Desember
Publisher : UNIVERSITAS MUHAMMADIYAH MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/transformasi.v4i3.26801

Abstract

Increasing agricultural productivity is highly dependent on the need for water for irrigation. Water is a vital component for human, animal, and plant life. Therefore, farmers need knowledge and innovation in water management. In Jono Temayang Village, Bojonegoro, the problem of drought is very much felt, especially during the dry season, because irrigation still depends on rain-fed wells. The Luhur Farmers Group in Jono Village grows rice, tobacco, and corn, but has difficulty in providing sufficient irrigation water. Although there are irrigation channels, higher rice fields often lack water. Farmers use portable pumps that require fuel, but in conditions of water shortages, they are forced to draw water manually. The purpose of this activity is to provide socialization and training on the use of PLTS-based water pumps to facilitate irrigation and reduce fuel use. The training socialization is divided into 3 materials, namely material on irrigation management, introduction and assembly of PLTS and finally maintenance of PLTS-based water pumps.
THE THE EFFECT OF HCl ACTIVATOR CONCENTRATION ON THE EFFECTIVENESS OF ACTIVATED CARBON DERIVED FROM CORNCOBS FOR METHYLENE BLUE ADSORPTION Setyaningrum, Dyah; Fajarwati, Novia; Maghfiroh, Amalia
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 6 No. 2 (2024): July - December 2024
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v6i2.11516

Abstract

This study aimed to investigate how activator hydrochloric acid (HCl) concentration affects the adsorption capacity of corncob-activated carbon in Methylene Blue (MB) dye.  This was followed by immersion in HCl solutions with various concentrations (2.5 M; 3M; 3.5 M; and 4 M) as chemical activating agents. Next, FTIR and XRD were used to characterize the activated carbon that had been activated and unactivated. The study analyzed the reduction of methylene blue dye concentration in the air to evaluate the effectiveness of activated carbon as an adsorbent. It examined various factors influencing the adsorption process, including different initial concentrations of the azo dye (20 ppm, 30 ppm, 40 ppm, 50 ppm, and 60 ppm) and contact times (15, 30, 45, and 60 minutes). The experimental results indicated that a 3 M concentration of HCl was the most effective activator, leading to a maximum dye removal rate of 80.77%. For an initial concentration of 20 ppm of the azo dye, the highest adsorption results were achieved at 85.67%. Furthermore, the optimal contact time for maximum adsorption was found to be 30 minutes, with a peak adsorption rate of 70.08%. The Langmuir adsorption isotherm model demonstrated a better fit for the adsorption of methylene blue onto corncob-activated carbon. It can be concluded that activated carbon produced from corn cobs and treated with HCl is an effective adsorbent for reducing methylene blue levels in the solution.
Proses Pengolahan Minyak Mentah di Unit Kilang PPSDM MIGAS CEPU Istiqomah, Ilmi Nurul; Maghfiroh, Amalia Ma’rifatul
Jurnal Teknologi dan Manajemen Sistem Industri Vol. 1 No. 1 (2022): Jurnal Teknologi dan Manajemen Sistem Industri (JTMSI) - MARET
Publisher : Universitas Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.904 KB) | DOI: 10.56071/jtmsi.v1i1.301

Abstract

One of the industrial sectors that can be in the engineering field is the oil processing industry. Crude oil obtained from the earth can of course be used directly for daily needs such as cooking or for vehicle fuel. The oil needs to be processed so that it becomes suitable for use according to the needs to be used. This oil processing is carried out in a place called a refinery. At PPSDM Migas Cepu there is a refinery unit that processes crude oil into several oil products including residue, diesel and pertasol. The processing process uses atmospheric distillation or through a heating process. The purpose of this study is to determine the stages of crude oil processing at the Cepu PPSDM Migas Refinery unit, and the final product of crude oil processing at the Cepu PPSDM Migas Refinery unit. The data collection method used is a literature study conducted by looking for references both journals and books in the library of the Cepu Oil and Gas Human Resources Development Center to determine the refinery system, observations made by direct observation to the unit and control room to obtain temperature data, pressure and capacity of oil entering and leaving crude oil, fuel oil, gas fuel, and interviews were carried out in 2 stages, namely in the control room section and the development of the research process. The results of the research carried out, it was found that the stages of processing crude oil in the refinery unit through the atmospheric distillation process, namely preheating in the Heat Exchanger (HE), heating in the Furnace (F), evaporation in the Evaporator (V), separation in the fractionation column and stripper (C), condensation and cooling in the condenser (CN) and cooler (CL), separation from water in the separator (S) resulted in 10% CA pertasol, 5% CB pertasol, 1% CC pertasol, 59% Solar, residue 25 %.
Karakterisasi dengan Spektroskopi Infra Merah (FTIR) Serbuk Bonggol Jagung Maghfiroh, Amalia Ma'rifatul
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 1 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i1.17796

Abstract

Corn cobs contains 40-45% cellulose, 30-35% hemicellulose, and 10-20% lignin, while corn cobs ash contains more than 60% silica with small amounts of metal elements. Silica in corn cob powder can be isolated thermally and nonthermally. Nonthermally silica can be separated with HCl. This research was conducted to isolate silica from corncobs using HCl with variations in calcination temperature and holding time. The silica obtained was then characterized by bonding and its structure using infrared spectroscopy (FTIR). The steps taken were preparing the tools and materials, then preparing the corncob powder, and then preparing silica with HCL and FTIR, as well as data processing and analysis. This study concludes that corncob powder produces silica by isolating it using HCL at 70 ºC  for 3 hours and calcining at 800 ºC with a holding time of 4 hours. Based on its FTIR characterization, samples soaked in HCL at 70 ºC  resulted in absorption caused by several factors, including single NH, CH, OH, triple bonds, double bonds, and single bonds. This is reinforced by the FTIR results, where the peaks are in regions 1, 2, 3, and 4.
Utilization of HDPE Plastic Waste for Asphalt Making Additives With A Combination of Glass Waste Filler Alfia Nur Rahmawati; Amalia Ma’rifatul Maghfiroh
Journal of Green Science and Technology Vol 9 No 1 (2025): Journal of Green Science and Technology Vol. 9 No. 1 March 2025
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v9i1.9943

Abstract

Asphalt is one of the materials used as a road pavement material, this material was chosen because of its good and comfortable final result as a flexible pavement. The use of HDPE plastic waste as an additive to asphalt material and glass waste as filler was chosen in making asphalt, because it is an effort to overcome the problem of waste and besides that the content contained in these materials is thought to be an alternative to making asphalt. The purpose of this study was conducted to determine the characteristics of the constituent materials of asphalt mixture with HDPE plastic additives and glass waste filler; Marshall characteristics of asphalt mixture with HDPE plastic additives and glass waste filler; and the optimum composition ratio to produce asphalt with HDPE plastic additives and glass waste filler. The research results of the effect of the addition of plastic (HDPE and glass powder, partial replacement of asphalt and partial replacement of filler with a mixture proportion of 10-15 mm Coarse Aggregate fraction with a composition of 10%, Medium Aggregate 5-10 mm 48%, Fine Aggregate 0-5 mm 38%%% included in the gradation envelope requirements for AC-BC concrete asphalt layers, the Optimum Asphalt Content (KAO) value in the most optimum AC-BC hot asphalt mixture of 7.30%. While the variation of HDPE addition 6%, 4% and glass powder 1%, 2%, 3% is most optimal at the addition rate of 2.5% and 0.5%. The determination is based on the Marshall test by combining the values of VIM, VMA, VFA, Stability, Flow and Marshall Quotient (MQ). Keyword: Asphalt, Additives, HDPE, Filler, KAO.
Co-Authors Abu Bakar Ahmad Maulana Alfia Nur Rahmawati Alfian Bima Chandra Alfian Bima Chandra Ardana Farahdiansari Ardana Putri Farahdiansari Arum Sulistyorini Arum, Sulistyorini Dyah Setyaningrum, Dyah Effendi, Meilisa Rusdiana Surya Istiqomah, Ilmi Nurul Karim, Ahmad Alfianul Muhammad Erick Aldiansyah Novia Fajarwati, Novia Pratama, Rio Chandra Refani, Reza Septiana Rizky Stighfarrinata SARASWATI SARASWATI Silsa Zakaria Sintasari, Beny Suciati, Diyah Ayu Sudirnanto Sudirnanto Tohir, Mastor Bin Mohd Zainudin Zainudin