Rumah Jurnal Universitas Majalengka
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INVESTIGASI KOROSI PIPA FLOWLINE CARBON STEEL PADA SISTEM PRODUKSI MIGAS DAN PENERAPAN SOLUSI PROTEKTIF
Get PDFCorrosion in flowline pipes represents one of the critical challenges frequently encountered in the oil and gas industry, particularly within fluid transportation systems in the upstream sector. This issue significantly compromises material performance, incurs substantial economic losses, and poses serious occupational safety risks. Carbon steel, commonly used in flowline pipes, is highly susceptible to corrosion due to exposure to aggressive environments, including high humidity, formation water, and corrosive gases such as H₂S and CO₂. In line with the growing demands for infrastructure reliability and compliance with safety standards, effective corrosion mitigation has become increasingly urgent. The degradation of pipe integrity due to corrosion can jeopardize the long-term reliability of fluid transport systems, potentially leading to severe operational disruptions and escalating maintenance costs. This study aims to investigate the primary causes of corrosion and evaluate the effectiveness of applied mitigation strategies on flowline pipes at a production facility. The methods examined include the application of protective surface coatings and the use of wrapping systems to inhibit direct contact between the metal and corrosive agents. Additionally, pipe wall thickness measurements were conducted to estimate the remaining service life of the flowline system based on the extent of corrosion-induced degradation. The findings of this study are expected to offer technically sound and practically applicable recommendations for corrosion control, thereby enhancing operational reliability and contributing to the sustainable performance of oil and gas infrastructure
ANALISIS SENTIMENT MASYARAKAT TERHADAP PABRIK DI JAWA BARAT SEBAGAI DASAR STRATEGI PENINGKATAN CITRA INDUSTRI DI MAJALENGKA
Get PDFThe rapid development of the new industrial estate in Majalengka requires the support of a good image from the local community. This study aims to assess public sentiment towards factories in West Java as a basis for formulating strategies to improve the image of industry in Majalengka. The Support Vector Machine (SVM) method was applied to classify the sentiment of YouTube comments relating to the factory, after a process of data collection, text preprocessing, and lexicon-based sentiment labelling. The main findings indicated that people's sentiments were distributed in proportions of approximately 30% negative, 35% neutral, and 35% positive. The accuracy of the SVM model was recorded at 78.48%, while the confusion matrix indicated adequate classification performance of the sentiments. matrix indicates adequate classification performance for negative, neutral, and positive sentiments. negative, neutral, and positive sentiments. This finding indicates that there is a significant negative sentiment towards the significant negative sentiment towards the industry, although it is not dominant. In conclusion, sentiment analysis conducted through social media can serve as a basis for formulating public relations and Corporate Social Responsibility (CSR) strategies. Corporate Social Responsibility (CSR) strategies in an effort to improve the industry's image. The industry and the government are advised to improve clear communication and responsive CSR programmes, with the aim of reducing negative sentiment and strengthening public trust. strengthen public trust
PENGARUH SUPPLY CHAIN PERFORMANCE TERHADAP KINERJA KEUANGAN PADA PERUSAHAAN SHOETOWN GROUP
Get PDFPenelitian ini bertujuan untuk menguji pengaruh supply chain performance terhadap kinerja keuangan pada perusahaan Shoetwon Group. Periode 2021-2024 kapasitas produksi dan rekap pesanan pada perusahaan Shoetwon Group terus meningkat sedangkan nilai EBIT mengalami penurunan. Penelitian ini menggunakan metode penelitian kuantitatif. Supply chain performance diproxykan menggunakan pairs per hours sebagai variabel independen , sedangkan kinerja keuangan perusahaan diproxykan menggunakan return on assets sebagai variabel dependen. Penelitian ini menggunakan sampel dari 5 perusahaan yang tergabung pada grup perusahaan. Penarikan sampel dilakukan dengan menggunakan metode semua data yang sesuai kriteria sampel. Hasil penelitian menunjukan bahwa terdapat pengaruh yang positif tetapi tidak signifikan dari variabel pairs per hours terhadap kinerja keuangan return on assets. Hal ini menunjukan bahwa setiap peningkatan 1 satuan dari pairs per hours akan meningkatkan kinerja keuangan return on assets sebesar 0,016473 satua
TREN, TANTANGAN, DAN PELUANG KEBERLANJUTAN GLOBAL INOVASI HIJAU: SEBUAH ANALISIS BIBLIOMETRIK
Get PDFPenelitian ini bertujuan untuk menganalisis perkembangan, tantangan, dan potensi pengembangan Green Innovation (GI) melalui pendekatan co-occurrence network analysis, thematic map analysis, dan thematic evolution map. Temuan menunjukkan bahwa GI saat ini memiliki fokus utama pada pembangunan berkelanjutan, inovasi teknologi, manajemen lingkungan, serta kebijakan ekonomi hijau. Tema-tema seperti sustainable development dan green innovations memainkan peran sentral, mengindikasikan pergeseran penelitian dari inovasi teknis ke pendekatan yang lebih komprehensif dan multidisiplin. Tantangan utama dalam penerapan GI meliputi kesenjangan kebijakan, keterbatasan investasi, dan infrastruktur yang belum memadai. Namun, terdapat potensi besar untuk pengembangan GI melalui dukungan kebijakan publik dan peningkatan investasi dalam teknologi hijau. Studi ini memberikan wawasan penting untuk memahami bagaimana GI dapat berkontribusi pada tujuan keberlanjutan global dan mendorong pertumbuhan ekonomi yang berkelanjutan. Rekomendasi penelitian lanjutan mencakup pengembangan kebijakan dan model investasi, penerapan GI dalam sektor spesifik, serta peningkatan kolaborasi internasional
Pengaruh Kepuasan Pelanggan Terhadap Retensi Pelanggan Dengan Hambatan Berpindah Sebagai Variabel Pemediasi Dalam Konteks Ekonomi Islam (Pada Pengguna Kartu Telkomsel Di Watampone)
Get PDFPenelitian ini bertujuan untuk mengetahui pengaruh kepuasan pelanggan terhadap hambatan berpindah dan retensi pelanggan, serta untuk menguji peran hambatan berpindah sebagai variabel mediasi antara kepuasan dan retensi pelanggan dalam perspektif ekonomi Islam, khususnya pada pengguna kartu Telkomsel di Watampone. Permasalahan yang diangkat mencakup bagaimana hubungan antara kepuasan pelanggan, hambatan berpindah, dan retensi pelanggan. Penelitian ini menggunakan pendekatan kuantitatif dengan metode explanatory research, melibatkan 97 responden dan dianalisis menggunakan regresi linier berganda. Hasil penelitian menunjukkan bahwa: (1) kepuasan pelanggan berpengaruh signifikan terhadap hambatan berpindah sebesar 69,9%; (2) kepuasan pelanggan berpengaruh signifikan terhadap retensi pelanggan sebesar 66,2%; (3) hambatan berpindah berpengaruh signifikan terhadap retensi pelanggan sebesar 27,7%; dan (4) hambatan berpindah mampu memediasi pengaruh kepuasan pelanggan terhadap retensi pelanggan. Kesimpulan dari penelitian ini menunjukkan bahwa retensi pelanggan dapat diperkuat melalui peningkatan kepuasan dan penciptaan hambatan berpindah yang etis. Implikasinya, Telkomsel perlu merancang strategi layanan yang sesuai dengan prinsip ekonomi Islam, seperti kejujuran, transparansi, dan amanah, guna meningkatkan loyalitas jangka panjang pelangga
21st Century Character Values of Elementary School Students
Get PDFThe purpose of this study is to reveal the 21st Century characters possessed by Elementary School students. This study uses survey research and descriptive methods. The research data were obtained by distributing questionnaires to students in grades 5 and 6 from 2 Elementary Schools in Padang City. The collected data were tabulated and analyzed to determine the values of the 21st Century characters possessed by students. The results of this study indicate that the 21st Century characters, namely moral and performance characters possessed by Elementary School students, are in the adequate category. These character values tend to have the same value for each indicator, both performance and morals. The kinar character at the level of persistence in learning and positive attitudes in learning have values in the low category. While in the moral character value, all indicators are in the adequate category. This value shows that there needs to be awareness of how to improve students' character to face the 21st Century. Such as providing character-based learning models in every subject at school.
 
Construction of the Discus Throw Test for Physical Education Students
Get PDFThe aim of this research is to make improvements in the discus throwing test. Components that are improved in the throwing process start from the discus handle, the rotating stage, the throwing stage until returning to the original movement stage. Usually the discus throwing test uses the furthest distance taken by the meter. To find out the discus throwing quality of physical education students at Riau Islamic University, of course there must be test instruments and test norms for these students. Based on the background above, it is important for this research to be carried out in order to create a standard discus throwing test instrument that complies with the latest IAAF regulations. The method in this research uses research and development methods. This research uses development with the Borg and Gall model which includes ten activities, namely: (1) research and information collecting, (2) planning, (3) develop preliminary form of product, (4) preliminary field testing, (5) main product revision, (6) main field testing, (7) operational product revision, (8) operational field testing, (9) final product revision, (10) dissemination and implementation. The targets achieved in this research were physical education athletic students at Riau Islamic University. The population in this study was 40 people and the sample using a total sampling technique was 40 people. The instrument of this research is the discus throwing test. The data analysis technique in this research is (a) validity test using content validity and construct validity. The construct validity test was carried out by analyzing data from the discus throwing test results. The data obtained from the test was tested for validity using the SPSS computer program. (b) reliability test to describe the consistency of measurement results. The results of the discus throwing test instrument developed were correlated with the total score and had a validity of 0.790 and 0.790 which was greater than the r table (0.361). Meanwhile, the reliability result is 0.701, which is greater than the r table (0.361). The results of the validity of large group trials using the SPSS application with results obtained were 0.749, including the medium category. Based on data analysis, discus throwing skills were the lowest with a score of 87.91 and discus throwing skills were the highest with a score of 164.06
A Comprehensive Approach to Facility Management in Enhancing Physical Fitness and Sports Performance
Get PDFThis study investigates the impact of comprehensive facility management on the physical fitness and sports performance of student-athletes at the South Sulawesi Sports School (PPLP). Using a mixed-methods approach, data were collected from 30 athletes, five coaches, and three facility managers across four sports disciplines: athletics, pencak silat, karate, and sepak takraw. Quantitative assessments included physical performance evaluations—speed, agility, endurance, and strength—while qualitative insights were drawn from interviews, observations, and document analysis. The findings revealed that only 62% of the training facilities met national standards for safety and maintenance. Key issues included inadequate lighting, worn-out flooring, and limited equipment availability. Satisfaction surveys indicated that only 40% of athletes rated the training facilities “satisfactory” or better. Physical test results showed a clear correlation between facility quality and performance: athletes with access to well-maintained facilities recorded faster sprint times (average 3.21s vs. 3.48s) and higher agility scores (16.4s vs. 17.2s). Thematic analysis of stakeholder interviews revealed three main barriers: lack of maintenance budgeting, inconsistent scheduling, and psychological impacts of poor facility quality. A Pearson correlation analysis confirmed a moderate positive relationship (r = 0.54, p < 0.05) between facility conditions and athlete performance. This study contributes a novel integrative framework combining physical assessment and stakeholder perceptions to evaluate the effectiveness of sports infrastructure. The results underscore the strategic role of facility management in optimizing athlete development and provide a model for evidence-based policy formulation in regional sports institutions
Konsentrasi lemak dan kolesterol daging broiler pada berbagai tingkat pemberian tepung daun indigofera (Indigofera zollingeriana) dalam Ransum
Get PDFThis study aims to analyze the lipid and cholesterol content of broiler chicken meat from fish meal and soybean meal substitution with Indigofera leaf meal (Indigofera zollingeriana) (TDI) in the Ration and to obtain the balance of Indigofera leaf meal substitution to produce the best lipid and cholesterol content of broiler chicken meat. The study was conducted experimentally for 35 days using a Completely Randomized Design (CRD). The treatments given were in the form of substitution (TDI) at five levels, namely: 0% P0 (as control), P1 = Ration + 25% TDI; P2 = Ration + 30% TDI; P3 = Ration + 35% TDI; P4 = Ration + 40% TDI. Each treatment was repeated 4 times, and each replication unit kept five chickens, so the total required was 100 chickens. The variables observed were the lipid and cholesterol content of meat. The data obtained were analyzed by ANOVA and continued with Duncan's multiple range test. The results showed that the lipid content of broiler meat was not significantly affected (p>0.05) by TDI substitution. The same thing happened to the cholesterol content of broiler meat, which was not significantly affected (p>0.05) by TDI substitution. The highest lipid content was found in the P0 treatment, which was 6.75%, and the lowest was found in the P4 treatment, which was 4.70%. However, the lipid content of meat in all treatments was classified as usual. Meanwhile, the lowest cholesterol content, 77.31 mg/100g, was found in P2, and the highest, 84.05 mg/100g, was found in the P3 treatment. It can be concluded that the addition of TDI can reduce lipid and cholesterol content at certain levels, although the difference is not significant
Pengaruh waktu fermentasi menggunakan ekstrak daun pepaya gantung terhadap kadar kafein kopi liberika
Get PDFThis research aimed to analyze the effect of fermentation time using hanging papaya leaf extract (Carica papaya var. pendens) as a source of papain enzyme on caffeine content and organoleptic properties of Liberica coffee (Coffea liberica). Papaya leaf extract with 80% concentration was applied to Liberica coffee beans with fermentation time variations of 24, 36, and 48 hours. Caffeine content analysis was performed using UV-Vis spectrophotometry at a wavelength of 273 nm. The results showed that fermentation duration significantly affected caffeine reduction. At 24 hours fermentation, the caffeine content of the treated sample (1.374 ppm) was relatively similar to control (1.357 ppm). The 36-hour fermentation showed a decrease in caffeine in the treated sample to 1.225 ppm compared to control (1.281 ppm), while the most significant reduction occurred at 48 hours fermentation with caffeine content of 1.145 ppm in the treated sample compared to 1.530 ppm in control (25.16% reduction). The mechanism of caffeine reduction involves the proteolytic activity of papain enzyme which hydrolyzes the protein-caffeine complex and modifies the permeability of coffee bean cell membranes. This research provides a foundation for the development of an enzyme-based natural decaffeination method for Liberica coffee, although further optimization is needed to meet commercial decaffeinated product standards