Universitas Maritim Raja Ali Haji Pusat Jurnal Ilmiah
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Experimental trials to detect the lateral displacement on granular material embankment inserted geosynthetics due to the vertical loads
Get PDFThe usage of geosynthetics to improve the bearing capacity on granular material of embankment construction is worldwide familiar applied. The paper elaborates the lateral displacement of embankment inserted geosynthetics resulted vertical load on the top of embankment. This type of construction is applied like Mechanically Stabilized Earth- Retaining Wall (MSE-RW). Varied distances of inserted geosynthetics with low tensile strength on granular material of embankment for 20, 30, 40, 60 respectively cm installed on totally 140 cm-high of embankment. Each of layer is installed with varied distances with 120 cm -wide must be wrapped in order to avoid loses grains of granular material of embankment. The varied vertical surcharge at the above of embankment started with 19, 34, 49 kg respectively. The result of research indicates that number layer with inserted geosynthetics on granular material of embankment influences the lateral deflections which much more layers of geosynthetics or smaller vertical distance of geosynthetics provides smaller lateral deflection. Beside that increased vertical load implies the lateral deflection is increased
Utilization of Spent Bleaching Earth Waste in Soil-Lime Stabilization for Road Body Foundation Layers Based on Index Properties
Get PDFSpent Bleaching Earth (SBE) is a mixed material between bleaching earth and organic compounds derived from bleached crude oil. In addition, spent bleaching earth still contains a component of phosphoric acid. This phosphoric acid comes from the degumming process which is brought to the bleaching process by oil. According to Government Regulation Number 22/21 concerning Implementation of Environmental Management and Protection, this spent bleaching earth is classified as non-B3 waste depth. Chemical stabilization is by mixing chemicals into the soil material which causes a chemical reaction to occur between the mixing material and the soil which will produce new materials that have better quality. From the results of the physical properties experiment, it was found that the mixture with the optimum value for soil-lime stabilization was 10% SBE
PESTLE Analysis of the Free Nutritious Meal Program Policy in Indonesia
Get PDFFree Nutritious Meal Program (FNMP) in Indonesia, introduced as a national initiative to combat malnutrition and improve student health outcomes, reflects a significant policy intervention within the country\u27s broader education and health agendas. This study applies a PESTLE (Political, Economic, Social, Technological, Legal, and Environmental) analysis to critically evaluate the policy’s macro-environmental context, aiming to identify enabling and constraining factors that influence its implementation and sustainability. The primary objective is to investigate how external forces impact the effectiveness and scalability of the FNMP, particularly in diverse socio-economic and geographic regions of Indonesia. Employing a qualitative research approach, the study synthesizes policy documents, governmental reports, media sources, and relevant academic literature published between 2025. Data were coded thematically based on the six PESTLE dimensions to capture complex interdependencies affecting the policy’s rollout. The findings reveal that strong Political will and presidential backing significantly propel the program’s legitimacy and funding, while Economic challenges, such as inflation and budget reallocation, pose sustainability risks. Social, the program is well-received, especially in underprivileged areas, though disparities in community engagement remain. Technological limitations in food distribution logistics and monitoring systems are key operational barriers. Legal, the lack of binding regulatory frameworks weakens enforcement, and Environmentally, issues related to food waste and sustainable sourcing are under-addressed. In conclusion, while the FNMP holds considerable potential for improving child nutrition and educational outcomes, its long-term success depends on multi-sectoral collaboration, robust policy enforcement, and adaptive strategies
Pemberdayaan Masyarakat Desa Kismoyoso, Ngemplak, Boyolali terhadap Pengelolaan TPS3R
Get PDFArtikel ini membahas implementasi sosialisasi pemilahan sampah dan inovasi produk bernilai guna menggunakan bahan sampah kepada siswa-siswi MI Muhammadiyah Kismoyoso. Artikel ini juga membahas mengenai diskusi antar berbagai dinas kabupaten Boyolali dengan anggota Badan Keswadayaan Masyarakat Desa Kismoyoso untuk menghidupkan TPS3R. Program kerja ini diprakarsai oleh aduan masyarakat sekitar TPS3R mengenai siswa-siswi MI yang membuang sampah sembarangan, dan juga keluh kesah pekerja TPS3R mengenai fungsi BKM yang seharusnya menaungi TPS3R Desa Kismoyoso. Terlepas dari hal tersebut, program kerja ini telah memberi dampak positif bagi siswa-siswi dan memberi dampak positif bagi kerjasama anggota BKM, piha desa, pekerja TPS3R, dan dinas terkait seperti Dinas Lingkungan Hidup, Dinas Perumahan dan Kawasan Permukiman, dan Dinas Kesehatan.
Artikel ini membahas implementasi sosialisasi pemilahan sampah dan inovasi produk bernilai guna menggunakan bahan sampah kepada siswa-siswi MI Muhammadiyah Kismoyoso. Artikel ini juga membahas mengenai diskusi antar berbagai dinas kabupaten Boyolali dengan anggota Badan Keswadayaan Masyarakat Desa Kismoyoso untuk menghidupkan TPS3R. Program kerja ini diprakarsai oleh aduan masyarakat sekitar TPS3R mengenai siswa-siswi MI yang membuang sampah sembarangan, dan juga keluh kesah pekerja TPS3R mengenai fungsi BKM yang seharusnya menaungi TPS3R Desa Kismoyoso. Terlepas dari hal tersebut, program kerja ini telah memberi dampak positif bagi siswa-siswi dan memberi dampak positif bagi kerjasama anggota BKM, piha desa, pekerja TPS3R, dan dinas terkait seperti Dinas Lingkungan Hidup, Dinas Perumahan dan Kawasan Permukiman, dan Dinas Kesehatan.
Penilaian Kualitas Air Sungai Samin Kabupaten Sukoharjo Berdasarkan Kandungan Logam Cr, Cu dan Pb Sedimen
Get PDFLogam seperti Pb, Cr dan Cu merupakan pencemar yang bersifat toksik dan menurunkan kualitas perairan. Sungai Samin merupakan sungai yang mengalir melewati Kabupaten Karanganyar dan Sukoharjo, membawa berbagai macam limbah domestik dan industri pembuatan alkohol yang berpotensi peningkatan logam. Tujuan dari penelitian ini adalah mengetahui kandungan logam dan potensi cemaran logam pada sedimen berdasarkan faktor kontaminasi, indeks beban pencemaran dan indeks geoakumulasi. Penelitian ini dilaksanakan pada bulan Februari dan Maret 2022 menggunakan metode survey. Analisis logam Pb, Cr dan Cu menggunakan alat Atomic Absorption Spectrophotometer (AAS). Hasil penelitian menunjukkan kandungan logam Cr, Cu dan Pb pada bulan Februari berkisar antara 3,90-4,68 mg/kg dan 14,11-30,10 mg/kg; 26,07-34,71 mg/kg sedangkan konsentrasi logam Cr, Cu dan Pb bulan Maret mendapatkan angka 61,75-455,3 mg/kg; 11,03-13,16 mg/kg dan 9,99-11,87 mg/kg. Indeks pencemaran gabungan pada bulan Februari menunjukkan segmen Sungai Samin di Kota Sukoharjo belum tercemar logam Cr, Cu dan Pb. Namun, tingkat kontaminasi dan indeks geoakumulasi bulan Maret logam Cr mengindikasikan adanya input antropogenik. Tinggi rendah kadar logam dalam sedimen karena jenis sedimen, jumlah limbah dan pengaruh air hujan. Tingkat kontaminasi logam Cu terindikasi rendah (CF<1) dan logam Pb terdapat dua kategori yakni rendah (CF<1) dan sedang (1<CF<2), tetapi indeks geoakumulasi logam Pb dan Cu tidak tercemar (Igeo<0). Berdasarkan Indeks beban pencemaran menunjukkan sedimen belum tercemar logam Cr, Cu dan Pb (PLI<1).Logam seperti Pb, Cr dan Cu merupakan pencemar yang bersifat toksik dan menurunkan kualitas perairan. Sungai Samin merupakan sungai yang mengalir melewati Kabupaten Karanganyar dan Sukoharjo, membawa berbagai macam limbah domestik dan industri pembuatan alkohol yang berpotensi peningkatan logam. Tujuan dari penelitian ini adalah mengetahui kandungan logam dan potensi cemaran logam pada sedimen berdasarkan faktor kontaminasi, indeks beban pencemaran dan indeks geoakumulasi. Penelitian ini dilaksanakan pada bulan Februari dan Maret 2022 menggunakan metode survey. Analisis logam Pb, Cr dan Cu menggunakan alat Atomic Absorption Spectrophotometer (AAS). Hasil penelitian menunjukkan kandungan logam Cr, Cu dan Pb pada bulan Februari berkisar antara 3,90-4,68 mg/kg dan 14,11-30,10 mg/kg; 26,07-34,71 mg/kg sedangkan konsentrasi logam Cr, Cu dan Pb bulan Maret mendapatkan angka 61,75-455,3 mg/kg; 11,03-13,16 mg/kg dan 9,99-11,87 mg/kg. Indeks pencemaran gabungan pada bulan Februari menunjukkan segmen Sungai Samin di Kota Sukoharjo belum tercemar logam Cr, Cu dan Pb. Namun, tingkat kontaminasi dan indeks geoakumulasi bulan Maret logam Cr mengindikasikan adanya input antropogenik. Tinggi rendah kadar logam dalam sedimen karena jenis sedimen, jumlah limbah dan pengaruh air hujan. Tingkat kontaminasi logam Cu terindikasi rendah (CF<1) dan logam Pb terdapat dua kategori yakni rendah (CF<1) dan sedang (1<CF<2), tetapi indeks geoakumulasi logam Pb dan Cu tidak tercemar (Igeo<0). Berdasarkan Indeks beban pencemaran menunjukkan sedimen belum tercemar logam Cr, Cu dan Pb (PLI<1)
Analisis Kesesuaian Budidaya Rumput Laut Kapphapycus alvarezii di Kecamatan Moro dan Sugi Besar Kabupaten Karimun
Get PDFProvinsi Kepulauan Riau (Kepri) memiliki garis pantai yang meluas hingga mencapai 8.561,33 kilometer, memberikan potensi besar dalam sumber daya kelautan dan perikanan, terutama di sektor maritim. Salah satu komoditas pangan off farm yang menjanjikan untuk dikembangkan adalah rumput laut. Budidaya rumput laut menjadi peluang penghidupan berkelanjutan bagi 3,28% buruh dan nelayan di Kepri. Kabupaten Karimun telah mengembangkan industri pengolahan rumput laut dalam skala kecil khususnya jenis Kappaphycus alvarezii. Tujuan penelitian adalah untuk menganalisis kesesuaian budidaya rumput laut Kapphapycus alvarezii di Kecamatan Moro dan Sugi Besar Kabupaten Karimun. Analisis kesesuaian menggunakan Pendekatan spasial dan Sistem Informasi Geografis (GIS) menggunakan metode Multi Criteria Analysis (MCA). Hasil analisis menunjukkan bahwa hanya tujuh parameter dengan gradien skor yang memiliki signifikansi dalam area kajian. Dua parameter utama, yaitu DO dan salinitas, menunjukkan tingkat kesesuaian yang tinggi, berdasarkan kriteria yang ditetapkan. Kendala terbesar terletak pada tinggi gelombang dan posfat yang memiliki skor kurang sesuai, serta TSS yang tidak sesuai. Tingginya kekeruhan (TSS) di lokasi penelitian disebabkan oleh kedekatan dengan daratan Sumatera yang memiliki sungai-sungai besar. Kesesuaian juga didukung dengan kondisi eksisting lokasi, dukungan pemerintah dan sosial ekonomi masyarakat lokal. Karena itu pengembangan budidaya rumput laut yang efektif dan efisien dan berkelanjutan layak dipertimbangkan.Provinsi Kepulauan Riau (Kepri) memiliki garis pantai yang meluas hingga mencapai 8.561,33 kilometer, memberikan potensi besar dalam sumber daya kelautan dan perikanan, terutama di sektor maritim. Salah satu komoditas pangan off farm yang menjanjikan untuk dikembangkan adalah rumput laut. Budidaya rumput laut menjadi peluang penghidupan berkelanjutan bagi 3,28% buruh dan nelayan di Kepri. Kabupaten Karimun telah mengembangkan industri pengolahan rumput laut dalam skala kecil khususnya jenis Kappaphycus alvarezii. Tujuan penelitian adalah untuk menganalisis kesesuaian budidaya rumput laut Kapphapycus alvarezii di Kecamatan Moro dan Sugi Besar Kabupaten Karimun. Analisis kesesuaian menggunakan Pendekatan spasial dan Sistem Informasi Geografis (GIS) menggunakan metode Multi Criteria Analysis (MCA). Hasil analisis menunjukkan bahwa hanya tujuh parameter dengan gradien skor yang memiliki signifikansi dalam area kajian. Dua parameter utama, yaitu DO dan salinitas, menunjukkan tingkat kesesuaian yang tinggi, berdasarkan kriteria yang ditetapkan. Kendala terbesar terletak pada tinggi gelombang dan posfat yang memiliki skor kurang sesuai, serta TSS yang tidak sesuai. Tingginya kekeruhan (TSS) di lokasi penelitian disebabkan oleh kedekatan dengan daratan Sumatera yang memiliki sungai-sungai besar. Kesesuaian juga didukung dengan kondisi eksisting lokasi, dukungan pemerintah dan sosial ekonomi masyarakat lokal. Karena itu pengembangan budidaya rumput laut yang efektif dan efisien dan berkelanjutan layak dipertimbangkan
Enhancing Maritime Security: Challenges and Strategies in Indonesia\u27s Natuna Sea
Get PDFThe Natuna Sea, a strategic region within Indonesia\u27s exclusive economic zone, faces multifaceted maritime security challenges that threaten national sovereignty, economic interests, and regional stability. This abstract explores the key issues and strategic responses to enhance maritime security in this vital area. Indonesia\u27s maritime security challenges in the Natuna Sea are driven by illegal, unreported, and unregulated (IUU) fishing, territorial disputes, and transnational crimes such as smuggling and human trafficking. The encroachment of foreign fishing vessels, particularly from neighboring countries, exacerbates the IUU fishing problem, undermining local economies and depleting fish stocks. Additionally, overlapping territorial claims, particularly with China, complicate Indonesia\u27s efforts to assert its sovereignty and maintain peace in the region. To address these challenges, Indonesia has developed a comprehensive maritime security strategy that includes diplomatic, legal, and operational measures. Diplomatic efforts focus on strengthening regional cooperation through ASEAN and other multilateral forums to foster dialogue and build consensus on maritime security issues. Legal measures involve the enforcement of national and international laws, including the United Nations Convention on the Law of the Sea (UNCLOS), to uphold Indonesia\u27s territorial rights and combat IUU fishing. Operationally, Indonesia has enhanced its maritime patrols, surveillance capabilities, and naval presence in the Natuna Sea. The establishment of the Maritime Security Agency (Bakamla) and the deployment of advanced technology, such as unmanned aerial vehicles (UAVs) and satellite monitoring, have improved the detection and interdiction of illegal activities. Despite these efforts, challenges persist due to resource constraints, coordination issues among agencies, and the complex geopolitical landscape. This abstract underscores the importance of a holistic and adaptive approach to maritime security, integrating diplomatic, legal, and operational strategies
Development of an electronic worksheet integrated with the ethnomathematics of indigenous fish trap called Bubu as the context to promote space geometry learning
Get PDFThis study aims to produce an e-worksheet product based on ethnomathematics of fish trap in the form of Bubu on valid and practical space geometry material. This type of research is Research and Development (R&D) using the ADDIE development model. According to the needs of the researchers in this study, they only carried out three stages: analysis, design, and development. The data collection instruments were expert validation sheets and teacher and student response questionnaires. The data obtained were qualitative and then converted into quantitative data on an interval scale using MSR. The results of the material expert validation obtained an assessment of 80.36% with very valid criteria, the media expert validation obtained an assessment of 82.51% with very valid criteria, and the language expert validation obtained an assessment of 82.27% with very valid criteria. The results of the practicality test by the teacher obtained an assessment of 81.09% with very practical criteria, and the practicality test by students obtained an assessment of 84.33% with very practical criteria. The ethnomathematics-based e-worksheet that was developed has achieved valid and practical criteria. Therefore, the product created is worthy of being tested for its effectiveness
KAJIAN ETNOSAINS PAUREH SEBAGAI SUMBER PEMBELAJARAN IPA
Get PDFScience learning cannot be separated from the environmental context, including local wisdom. One of the treatments known among the people of Padang City is Paureh. Paureh is a concoction consisting of pieces of leaves of medicinal plants which function for the treatment of fever, measles, regurgitation, new homes and so on. The purpose of this research is to analyze and reconstruct the community\u27s knowledge (indigenous science) about Paureh into scientific knowledge in order to find out the types of diseases, traditional medicinal methods and medicinal plants used and it is hoped that it can also contribute information to ethnobotany enthusiasts in developing technology for the utilization of medicinal plants used by various ethnic groups in Indonesia. This study uses an ethnoscience-based qualitative approach with interview and observation methods. Data analysis uses the Miles-Huberman model which includes data reduction, data presentation, drawing conclusions and verification. Based on the results of the study, it showed that the Paureh material had ethnomedicin value that could be used by the community. Reconstruction from community knowledge to scientific knowledge gives scientific meaning to the rules or beliefs that belong to the local community. So that scientific knowledge can be used as a source of learning, especially in science learning
Ethnomathematics in the rhythmic patterns of Bebano musical instruments of the Malay community of Riau Islands
Get PDFBebano instrument is one of the traditional Malay musical instruments, a type of percussion or hit instrument. Most of the rhythm patterns in Malay music can be played with Bebano, namely langgam, zapin, inang, joget, and jogi rhythm patterns. This study aimed to determine the form of ethnomathematics in the rhythm patterns of Bebano musical instruments as mathematics learning materials. This study is qualitative research with an ethnographic approach. The research subjects were Penyengat Island art activists at Staman Malay Music. Data was collected by observation, interview, and documentation, with the main instrument being the researcher himself. Data analysis techniques included domain analysis, taxonomy, componential, and cultural themes. The study\u27s results found the concept of mathematics contained in the rhythm patterns of Bebano musical instruments. In playing activities, mathematical material is found, namely variablizing and combination. While in the calculation activity, mathematical material is found, namely the form of fractional numbers