Universitas Maritim Raja Ali Haji Pusat Jurnal Ilmiah
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The Effect of Fracture Strength of Composite Materials with the Addition of Pineapple Leaf Fiber
Full text linkComposite materials with unsaturated polyester matrix reinforced with natural fibres were developed to make biodegradable composite materials so that the waste does not damage the environment. Regarding mechanical strength, natural fibre-based composites are still lower in mechanical strength than composite materials with synthetic fibre reinforcement. These weaknesses include easy cracking when hit because they are brittle and have a small plastic deformation area. Some actions that will be carried out in this study are the addition of pineapple fibres with unsaturated polyesters that can form composites that are resistant to cracking. The addition of pineapple fibers to unsaturated polyesters up to 20% can have the highest fracture strength with a value of K1C = 1.733 MPa.m0.5, whereas pure unsaturated polyester without a mixture of pineapple fibres only has a fracture strength of K1C = 0.779 MPa.m0.5. From the results of the study, the addition of pineapple fibres can increase the fracture strength of polyester materials by 222.47%
Strategic SWOT Analysis of Municipal Solid Waste Management and Waste Bank System in Bandung City; Toward a Circular and Sustainable Urban Future
Full text linkBandung City faces escalating municipal solid waste challenges driven by rapid urban growth, consumption patterns, and limited treatment capacity. In response, waste banks (bank sampah) have emerged as community-based initiatives that promote recycling and waste segregation; however, their performance varies widely across districts due to institutional, financial, and technological constraints. This study aims to evaluate the strategic role of waste banks within Bandung’s municipal solid waste management system through a structured SWOT analysis. A descriptive qualitative approach was applied, utilizing secondary data from journal articles, government reports, and credible news sources published between 2015 and 2025. Findings reveal strong community participation, environmental awareness, and institutional support as core strengths, while weaknesses include inadequate infrastructure, inconsistent funding, and the absence of digital monitoring systems. Opportunities are found in circular economy policies, CSR-based partnerships, and technological innovations for data management. External threats include fluctuating recyclable prices, landfill capacity limitations, and policy instability. Based on these insights, strategic recommendations were formulated, including the integration of waste banks into formal municipal planning, digital platform adoption, standardized operating procedures, and cross-sector collaboration. The study concludes that waste banks hold significant potential to support Bandung’s transition toward a circular and sustainable urban waste-management model, provided that institutional strengthening and technological innovation are prioritized. This research serves as a practical reference for policymakers, academics, and community stakeholders in addressing urban waste challenges
KARAKTERISTIK ARTIFICIAL NORI DARI DAUN BERUWAS LAUT (Scaevolla taccada)
Full text linkDaun beruwas laut (S.taccada) termasuk tanaman pesisir tumbuh yang umum ditemui di Kepulauan Riau. Berdasarkan penelusuran literatur daun beruwas laut (S. taccada) ini belum pernah diolah menjadi makanan ataupun cemilan. Daun beruwas laut ini memiliki potensi sebagai bahan utama untuk pembuatan Artificial nori karena memiliki warna hijau seperti nori komersial namun tanaman ini tidak menghasilkan gel sebagai pengikat untuk membentuk lembaran. Sehingga perlu ditambahakan bahan lain yaitu dengan penambahan tepung tapioka. Tujuan dari penelitian ini yaitu untuk menentukan formulasi terbaik dari artificial nori dari daun (S. taccada), menentukan karakteristik artificial nori dari daun (S. taccada) serta mengetahui kandungan proksimat artificial nori dari daun (S. taccada). Metode penelitian ini menggunakan rancangan acak lengkap (RAL) dengan menggunakan SPSS 26, yang terdiri dari 3 perlakuan yaitu F1 (6%), F2 (8%), F3 (10%). Hasil pengujian organoleptik menunjukkan bahwa F1 (6%) merupakan perlakuan terbaik memberikan nilai rata-rata terhadap parameter warna (2,53%), aroma (2,57%), rasa (2,73%) dan tekstur (2,40%). Nilai proksimat yang dihasilkan dari uji hedonik terpilih mendapatkan nilai rata-rata kadar air (8,81%), abu (5,06%), protein (13,6%), lemak (3,81%), karbohidrat (68,7%). Ketebalan 1,40 mm, ukuran 3,5x2,3 cm, dan berat 0,2881 gr
PENYISIHAN LOGAM BESI DALAM SAMPEL AIR TANAH MENGGUNAKAN BIJI BUAH MATOA (POMETIA PINNATA) DENGAN METODE BIOSORBSI
Full text linkPertumbuhan industri telah berkontribusi pada masalah lingkungan karena menghasilkan limbah cair atau padat sebagai produk sekunder setelah pemrosesan industri salah satunya limbah logam berat yang telah menjadi ancaman bagi dunia. Logam berat dapat menyebabkan efek toksik yang lebih serius, termasuk kanker, kerusakan otak, atau kematian, dan dapat merusak lingkungan. Besi adalah varian dari logam berat padat dan beracun yang ditemukan dalam kelompok IVA, terutama berbahaya saat tertelan oleh organisme hidup, terutama spesies manusia. Zat logam ini memiliki kecenderungan untuk menumpuk di dalam ekosistem, dan penghapusannya melalui cara biologis terbukti sangat menantang. Salah satu metode yang bisa digunakan adalah biosorpsi dengan mengggunakan biji buah matoa (Pometia Pinnata) sebagai adsorben. Tujuan dari penelitian ini adalah untuk mengetahui kemampuan biji matoa (Pometia Pinnata) dalam mengurangi kandungan Logam besi didalam sampel. Metode biosorpsi yang digunakan didalam penelitian ini secara batch. Hasil yang diperoleh adalah tidak terlihat pengaruh yang signifikan perubahan warna pada air tanah sebelum dan dikontakkan dengan biosorben dari biji matoa. Pada penentuan pHpzc yaitu pada pH 4 dengan waktu kontak optimum 60 menit dan dosis sampel 0,1 g serta kecepatan pengadukan 200 rpm Dimana kecepatan pengadukan sangat mempengaruhi kemampuan daya serap adsorben dengan kapasitas adsorpsi 0,341 mg/L. Biji buah matoa memiliki kemampuan dalam mengurangi kandungan logam berat Fe didalam air tanah
Perubahan Tutupan Lahan Mangrove pada Area Izin Hutan Tanaman Rakyat untuk Produksi Arang di Kabupaten Lingga Kepulauan Riau
Full text linkTelah dilakukan penelitian mengenai perubahan tutupan lahan mangrove pada area izin Hutan Tanaman Rakyat (HTR) untuk Produksi Arang selama tahun 2011 dan 2023 di Kabupaten Lingga, Kepulauan Riau.Lokasi kajian ditetapkan pada area Izin HTR seluas 12,195 hektar yang diberikan pemerintah kepada kelompok tani hutan pada tahun 2012. Penelitian ini bertujuan mengukur deforestasi, degradasi, dan reforestasi pada area/kawasan yang memiliki izin produksi. Pengambilan data dilakukan secara purposive sampling dipilih lokasi atau kawasan hutan mangrove yang berada dalam area izin HTR. Metode analisis menggunakan overlay peta tutupan lahan dari citra satelit tahun 2011 dan 2023 di areal izin HTR. Hasil penelitian menunjukkan bahwa deforestasi pada kawasan izin HTR seluas 988 hektar, degradasi 42 hektar, dan reforestasi 2,813 hektar. Berdasarkan analisis didapatkan nilai reforestasi lebih tinggi dibandingkan deforestasi dan degradasi, dapat disimpulkan bahwa pemanenan bakau melalui izin HTR tidak menyebabkan kerusakan mangrove yang signifikan.Telah dilakukan penelitian mengenai perubahan tutupan lahan mangrove pada area izin Hutan Tanaman Rakyat (HTR) untuk Produksi Arang selama tahun 2011 dan 2023 di Kabupaten Lingga, Kepulauan Riau.Lokasi kajian ditetapkan pada area Izin HTR seluas 12,195 hektar yang diberikan pemerintah kepada kelompok tani hutan pada tahun 2012. Penelitian ini bertujuan mengukur deforestasi, degradasi, dan reforestasi pada area/kawasan yang memiliki izin produksi. Pengambilan data dilakukan secara purposive sampling dipilih lokasi atau kawasan hutan mangrove yang berada dalam area izin HTR. Metode analisis menggunakan overlay peta tutupan lahan dari citra satelit tahun 2011 dan 2023 di areal izin HTR. Hasil penelitian menunjukkan bahwa deforestasi pada kawasan izin HTR seluas 988 hektar, degradasi 42 hektar, dan reforestasi 2,813 hektar. Berdasarkan analisis didapatkan nilai reforestasi lebih tinggi dibandingkan deforestasi dan degradasi, dapat disimpulkan bahwa pemanenan bakau melalui izin HTR tidak menyebabkan kerusakan mangrove yang signifikan
Admiral Malahayati: The Role of Women in Maritime Defense
Full text linkAdmiral Malahayati, a female figure in the history of the Aceh Sultanate, played a significant role in defending regional sovereignty from colonial threats in the late 16th century. This study explores Malahayati\u27s contribution to naval warfare strategies and community participation, especially war widows, in defense efforts. Using a qualitative approach and theories of maritime war and general warfare, this study analyzes how Malahayati utilized community support and local resources to build an effective military force. The entry of Inong Balee (widows) troops who lost their husbands in the conflict gave a new dimension to the concept of maritime resilience. They not only played a role as logistical support but were also actively involved in the resistance against the invaders. Using the principle of civil society involvement expressed by Reznikova, this study shows that civil society participation, especially the active role of women, is an important element in maintaining a country\u27s sovereignty. The results of this study highlight the importance of integrating the roles of women and society in defense strategies, as well as the significance of Malahayati\u27s history in the context of modern debates about community involvement in national defense, especially among women. These findings are expected to provide new insights into women\u27s contributions to Indonesian military history and open new discussions about national resilience in the face of contemporary threats
Evaluation of Policies to Accelerate Reduction of Extreme Poverty in Meranti District
Full text linkOptimism to end poverty in 2030 is entering a pessimistic phase. The unfinished pandemic and geopolitical conflict has an impact on the most basic problem, namely the food crisis and has caused poverty rates to increase. In responding to global challenges regarding many poverty issues, more than 160 countries have agreed to create an action plan in Sustainable Development Goals (SDGs). The Poverty and Shared Prosperity report at the end of 2022, it turns out that 10.7 percent of the global population is in poverty. It is recorded that 767 million people live below the international poverty line. The current phenomenon that is occurring is that the poverty rate in Indonesia has reached 27.77 million people or 10.64 percent with the total population of Indonesia amounting to 275.77 million people in 2022. In the Extreme Poverty Reduction Policy Program in Indonesia, Meranti Islands Regency is a priority area with The number of poor people is 45 thousand out of 213,532 people or around 25.28 percent of the total population with the number of extremely poor people being 11.22 percent. The Policy Evaluation Theory put forward by William N Dunn is an indicator for analysis. This research will be carried out in Meranti Regency. The aim of this research is to resolve the chaotic problem of extreme poverty. The method and type of this research is Qualitative Descriptive. The technique for withdrawing informants uses a proportional sampling technique and data collection techniques in this research are interviews, observation, literature study and documentation.Indonesia has a forest area of around 94.1 million hectares which consists of various spatial functions including those used as Production Forests. Production forests which are currently used are around 63 million ha of Indonesia\u27s forest area which is divided into permanent production forest areas, limited production forests. , and convertible production forests (HPK). In accordance with the policies contained in the Agrarian Reform Object Land (TORA) program issued by the central government, HPK is one of the targets used for area release. The current phenomenon that is occurring is that TORA does not accommodate land issues that previously had property rights issued by the National Land Agency which then turned into Convertible Production Forests. So far, what has arisen regarding land issues is the land mafia, but in this phenomenon the community is harmed again by changes in areas where the land with property rights status cannot be cultivated and bought and sold. This research will be carried out in Riau province with the National Land Agency and the Riau Provincial Forest Service as objects. The aim of this research is to resolve disputes over land issues, not only TORA, but also people who previously had land rights issued by BPN, changing their status to HPK. The method and type of this research is Qualitative Descriptive. The technique for attracting informants uses a proportional sampling technique and data collection techniques in this research are interviews, observation, literature study and documentation
AKURASI QUICK COUNT DALAM MENYAJIKAN INFORMASI HASIL PEMILIHAN UMUM TAHUN 2024
No full textThe Presidential Election and Legislative Election are important processes in determining future leaders. The elections are carried out using a different concept, namely with a new method known as quick count, which involves fast counting with a high level of accuracy, which is the benchmark in determining the winner. in the presidential and legislative election process, this process is closely related to the concept of democracy, according to which power is completely in the hands of the people, problems related to quick counts in voting, namely there are inaccuracies in the election process, and indications of fraud have the potential to have consequences law in accordance with the provisions in force in Indonesia, so that significant changes can occur in the occurrence of popular protests to demand justice and honesty in the election process. This is related to the method used is a qualitative method which aims to test the hypothesis proposed for an integrative analysis and more conceptually to find, identify, process and analyze problems in order to understand the meaning, significance and relevance to control certain variables, to understand the cause-and-effect relationship between variables, Finally, the statistical methods used, whether quick counts, exit polls or surveys should be able to correlate with public aspirations in improving welfare and the public\u27s bargaining power towards power. The role of statistical methods can summarize the desires of the community, to at least be published and become material for joint evaluation for the government, stakeholders, the public, the market and institutions with an interest in it so that they can be more accurate and honest in the context of elections in the future. in accordance with a combination system between the quick count and the previous election system
Building Performance Through Work Engagement and Social Emotional Learning: A Study on Non-ASN Employees of the Banten Ministry of Religion
Full text linkThe purpose of this study was to determine the direct effect of work involvement and social emotional learning on work decision making. The direct effect of work involvement and social emotional learning on performance; Indirect effect of work involvement and social emotional learning on performance through work decision making. This study uses a quantitative method with a correlational approach. The population of this study were all honorary employees in the Regional Office and the Ministry of Religion Office in Banten Province, totaling 289 people. The sampling technique used was proportional random sampling. The sample size was 240 respondents. The research instrument was developed based on the grid compiled from the theory that has been explained on the theoretical basis. Data was collected using a questionnaire. The study was conducted in June-July 2024. The results of this study indicate that work involvement has a significant effect on work decision making. Social emotional learning has a significant effect on work decision making; Job involvement has a significant effect on Performance; Social emotional learning has a significant effect on performance; job involvement has a significant effect on performance through work decision making. Social emotional learning has a significant effect on performance through work decision making. The findings of this study, that work decision making is able to mediate the influence of work involvement and social emotional learning on performance through work decision making
Electorial Account Applications: Paradoks Transformasional dan Kerentanan Elektoral pada Pemilu di Indonesia
Full text linkPenelitian ini bertujuan untuk menganalisis secara komprehensif paradoks transformasional dan kerentanan elektoral yang muncul akibat adopsi aplikasi akuntabilitas elektoral (electoral account applications) dalam kontestasi Pemilu di Indonesia. Dengan pendekatan interdisipliner, studi ini mengintegrasikan perspektif sosiologi, hukum, dan akuntansi untuk memahami dinamika kompleks teknologi ini. Metode penelitian yang digunakan adalah kualitatif deskriptif dengan pengumpulan data melalui studi pustaka, analisis dokumen regulasi, dan observasi daring terhadap implementasi aplikasi terkait. Secara spesifik, dari sudut pandang sosiologi, penelitian ini menyelidiki bagaimana aplikasi ini membentuk ulang lanskap partisipasi politik dan interaksi sosial antara aktor elektoral, yang berpotensi memicu polarisasi atau echo chamber. Dalam konteks hukum, analisis difokuskan pada kerangka regulasi eksisting dan tantangan penegakan hukum terkait transparansi dan akuntabilitas dana kampanye yang difasilitasi oleh aplikasi digital. Sementara itu, perspektif akuntansi mengeksplorasi efektivitas pelaporan keuangan kampanye digital dan potensi celah bagi dark money atau manipulasi data akuntansi yang terselubung. Hasil penelitian menunjukkan bahwa meskipun aplikasi akuntabilitas elektoral menjanjikan peningkatan transparansi dan efisiensi partisipasi, ia secara paradoksal memperkenalkan kerentanan baru, termasuk (1) penyebaran informasi bias dan manipulasi opini publik, (2) kesulitan dalam melacak dan mengaudit aliran dana ilegal atau tidak transparan akibat regulasi yang tertinggal,, serta (3) ilusi akuntabilitas finansial yang disembunyikan di balik kompleksitas teknis dan kurangnya standar audit yang ketat. Temuan ini menggarisbawahi urgensi pembaharuan kebijakan, pengembangan literasi digital pemilih, dan adaptasi kerangka hukum serta standar audit untuk memastikan integritas proses elektoral di era digital