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Analisis Ekonomi dan Penurunan Emisi Karbon pada West Kalimantan Power Grid Strengthening Project
Get PDF West Kalimantan Power Grid Strengthening Project menunjukan manfaat ekonomi yang signifikan, sebagaimana tercermin dari Economic Internal Rate of Return (EIRR) sebesar 92,1% dengan Economic Net Present Value (ENPV) sebesar $224,7 juta pada tingkat diskonto 12%. Pencapaian ini melebihi penilaian awal karena pembelian energi listrik aktual dai SESCO, Serawak lebih besar dari saat perencanaan. Penilaian manfaat ekonomi ini penting dilakukan untuk mengetahui kebermanfaatan suatu proyek di sektor publik, terutama pada penyediaan listrik yang nilainya sering terdistorsi karenya penyesuaian. Selain itu, proyek ini memberikan kontribusi terhadap keberlanjutan lingkungan dengan mengurangi emisi CO2 pada Sistem Khatulistiwa melalui pembelian energi terbarukan dari Bakun Hydropower. Selama periode 2016-2022, proyek ini mencapai rata-rata penurunan emisi sebesar 1.095.519 ton CO2e per tahun. Kata kunci: manfaat ekonomi proyek, efisiensi proyek, penurunan emisi karbo
Implementasi Metode Agile Pada Sistem Informasi Pengelolaan Data Usaha Mikro Kecil dan Menengah (UMKM) Kota Bengkulu Berbasis Website
Get PDFUsaha Mikro, Kecil, dan Menengah (UMKM) telah menjadi pilar utama dalam menggerakkan ekonomi di Kota Bengkulu. Namun, tantangan dalam pengelolaan data yang terstruktur dan akurat masih menjadi kendala utama bagi pemerintah dalam memantau, mendata dan menyediakan layanan bagi pelaku usaha UMKM. Pendataan UMKM yang masih dilakukan secara manual seringkali menyebabkan keterlambatan dalam proses pencatatan dan validasi data sehingga menghambat proses pengambilan keputusan serta pengembangan kebijakan yang sesuai dan tepat sasaran. Berdasarkan hal tersebut maka perlu adanya sistem informasi pengelolaan data UMKM untuk menjawab tantangan dengan menawarkan solusi digital yang terintegrasi melalui pengembangan berbasis metode agile. Hasil pengujian blackbox menunjukkan sistem siap diimplementasikan untuk mengelola data UMKM di Kota Bengkulu. Kata kunci: sistem informasi, pengelolaan data, UMKM, metode agil
Strategi Penurunan Tingkat Kehilangan Air di Perumda Air Minum Tirta Moedal Kota Semarang
Get PDFAir Tak Berekening atau Tingkat Kehilangan Air (TKA) pada Badan Usaha Air Minum (PDAM) menjadi perhatian bagi banyak kalangan. Artikel ini menjelaskan pendekatan proses penurunan kehilangan air dimulai dari penilaian, perumusan dan implementasi strategi pada PDAM Kota Semarang. Proses dimulai dengan melakukan penilaian TKA melalui penyusunan neraca air dan analisis komponen di tingkat perusahaan. Hasil penilaian ini kemudian diterjemahkan menjadi strategi di tingkat perusahaan. Dengan sumber daya yang telah dialokasikan, PDAM melalui bagian Penurunan Kehilangan Air melakukan penilaian TKA di tingkat zona atau Sistem Penyediaan Air Minum (SPAM) dan di District Metered Area (DMA) untuk merumuskan strategi di tingkat taktis. Langkah yang dilakukan bagian Penurunan Kehilangan Air adalah dengan melakukan penurunan TKA secara fokus di satu SPAM dengan memanfaatkan tim pencarian kebocoran dan Internet of Things (IoT) data logger. Implementasi strategi dilaksanakan dengan pendekatan model konseptual DMAIC (Define-Measure-Analyze-Improve-Control) pada semua DMA di SPAM tersebut sampai tercapainya target. Proses ini terbukti berhasilkan menurunkan TKA di salah satu SPAM dari 39% menjadi 26%. Harapannya, artikel ini dapat menjadi contoh penilaian, perumusan, dan implementasi strategi penurunan tingkat kehilangan air bagi PDAM. Kata kunci: Tingkat Kehilangan Air, penilaian, neraca air, analisis komponen, perumusan strategi, implementasi strategi, DMAI
Penilaian Sustainable Coastal Tourism Di Kawasan Wisata Pesisir Pantai Randusanga Iindah Kabupaten Brebes
Get PDFPantai Randusanga Indah di Kabupaten Brebes menghadapi berbagai permasalahan dalam pengembangan pariwisata pesisir berkelanjutan, seperti banjir rob, abrasi, minimnya fasilitas kesehatan, dan belum adanya kelompok sadar wisata. Penelitian ini bertujuan untuk mengevaluasi keberlanjutan kawasan wisata tersebut berdasarkan empat variabel utama: lingkungan, ekonomi, sosial, dan kelembagaan. Metode yang digunakan adalah pendekatan kuantitatif dengan teknik analisis skoring berbasis skala Likert. Skor diklasifikasikan ke dalam tiga kategori: buruk (<56), baik (57–80), dan sangat baik (81–100). Hasil penelitian menunjukkan bahwa nilai interval masing-masing variabel adalah: lingkungan (52), ekonomi (50), sosial (52), dan kelembagaan (54), yang seluruhnya masuk kategori buruk. Dengan demikian, kawasan wisata pesisir Pantai Randusanga Indah belum memenuhi kriteria Sustainable Coastal Tourism. Temuan ini menunjukkan perlunya intervensi strategis dalam perbaikan pengelolaan kawasan pesisir yang lebih berkelanjuta
Exploration of Adolescent Health Services and Utilization in Mamuju District, West Sulawesi
Get PDFIntroduction: Eating habits and nutritional status among adolescents in Mamuju, West Sulawesi, showed that adolescents with unhealthy eating habits tend to have a higher incidence of overweight and obesity compared to those with healthy eating habits. This underscores the need for early nutrition education for adolescents. This study aimed to explore the types of health and nutrition services received by adolescents at primary healthcare services in Mamuju District, West Sulawesi.Methods: An explanatory sequential mixed-methods design was used, combining cross-sectional and qualitative methods. The study involved 305 high school adolescents in Mamuju, selected through random sampling. Quantitative data were collected via surveys using structured questionnaires. Qualitative data were obtained from in-depth interviews with 8 key informants (health workers, teachers, and students) and focus group discussions (FGDs) with 8-10 participants per session, who were selected through purposive sampling to ensure diverse perspectives.Results: The results showed that the majority of adolescents accessed healthcare services through the Puskesmas (99.3%), as its easy access reported by 92.2% respondents. However, most respondents (77.7%) were unaware of the types of healthcare services available at the Puskesmas. The most commonly received services were mental health counseling (9.9%) and nutrition education (5.9%).Conclusion: These findings indicate the need for greater dissemination of information about available healthcare services through social media, as well as the strengthening of health and nutrition education programs for adolescents to support healthy lifestyle
Analysis on Smoking Behavior of Final Semester Students of Diponegoro University Semarang
Get PDFIntroduction: World Health Organization (WHO) data showed that tobacco consumption causes millions of deaths each year. Research on the University of Riau students found that 22-year-old students, who worked on their theses, tended to smoke. Another study at Faculty of Medicine, Diponegoro University, showed that college students used cigarettes to cope with academic stress. This study aimed to determine factors associated to smoking behavior on final-semester students of Diponegoro University Semarang.Methods: This observational study used a cross-sectional design. The purposive sampling with the criteria of Undip students who were active members of Thesis World Community, X social media accounts who were working on their thesis on May-August 2024, on the 2018-2020 class who smoked, and agreed to fill out the research forms. This study included a total of 100 students. Data collection was conducted through gforms, disseminated online in the Thesis World Community. Data analysis was performed using the chi-square tests.Results: These variables were associated to light or heavy smoking behavior: father's education level (p=0.004), mother’s education level (p=0.001), knowledge about the dangers of smoking (p=0.003), family encouragement (p=0.001), peer encouragement (p=0.011), perceived vulnerability (p=0.001), perceived seriousness (p=0.020), perceived benefits (p=0.022), perceived barriers (p=0.001), suggestions from others (p=0.001), and family experience (p=0.032). The variables that had no association with heavy smoking behavior were age (p=0.394) and sex (p=0.796).Conclusion: The determinants associated with heavy students' smoking behavior were low parental education level, the dangers’ of smoking knowledge, family encouragement, peer encouragement, perceived vulnerability, perceived seriousness, perceived benefits, perceived barriers, advice from others, and family experience
Perkecambahan dan Pertumbuhan Kecambah Tagetes erecta pada Cekaman Kadmium
Get PDFKadmium merupakan salah satu logam berat yang bersifat toksik dan dapat diserap oleh tumbuhan. Tagetes erecta merupakan tanaman hias yang memiliki kemampuan toleransi yang tinggi terhadap cekaman logam berat, sehingga tanaman ini dapat digunakan sebagai agen fitoremediasi. Tujuan dari penelitian ini adalah untuk mengetahui efek dari cekaman logam berat pada proses perkecambahan dan pertumbuhan benih T. erecta pada media pupuk cair yang mangandung Cd. Penelitian dilakukan secara eksperimental menggunakan desain rancangan acak lengkap. Konsentrasi CdCl2 yang digunakan sebagai perlakuan antara lain 0 (kontrol), 25, 50, 100, dan 200ppm. Biji T. erecta dikecambahkan di dalam cawan petri yang dialasi dengan kertas merang dan ditutup dengan plastik berwarna gelap. Perkecambahan dilakukan di laboratorium. Parameter jumlah biji yang berkecambah diamati setiap hari selama 14 hari digunakan sebagai penentuan persentase perkecambahan dan indeks vigor kecambah. Pertumbuhan kecambah diamati pada parameter panjang radikula dan panjang hipokotil pada akhir penelitian. Pemberian perlakuan kadmium mempengaruhi secara nyata perkecambahan dan pertumbuhan kecambah T. erecta. Kadmium pada konsentrasi 100-200 ppm menghambat secara nyata perkecambahan dan pertumbuhan kecambah T. erecta. Pertumbuhan radikula T. erecta pada perlakuan Cd sebesar 25ppm menunjukkan ukuran yang lebih panjang dibanding perlakuan kontrol. Hal ini dikarenakan penambahan kadmium pada konsentrasi rendah sebesar 25ppm masih mampu ditoleransi dan merangsang pertumbuhan kecambah T. erecta. Cadmium is one of the heavy metals that is toxic and can be absorbed by plants. Tagetes erecta is an ornamental plant that has a high tolerance to heavy metal stress, so this plant can be used as a phytoremediation agent. The purpose of this study was to determine the effects of heavy metal stress on the process of germination and growth of T. erecta seeds in liquid fertilizer media containing Cd. The research was conducted experimentally using a completely randomized design. The concentration of CdCl2 used as treatment included 0 (control), 25, 50, 100, and 200ppm. T. erecta seeds were germinated in a petri dish covered with straw paper and covered with dark colored plastic. Germination was carried out in the laboratory. The number of germinated seeds observed daily for 14 days was used to determine the germination percentage and vigor index of the sprouts. Sprout growth was observed in the parameters of radicle length and hypocotyl length at the end of the study. Cadmium treatment significantly affected the germination and growth of T. erecta sprouts. Cadmium at concentrations of 100-200 ppm significantly inhibited the germination and growth of T. erecta sprouts. Radicle growth of T. erecta in the Cd treatment of 25 ppm showed a longer size than the control treatment. This is because the addition of cadmium at a low concentration of 25 ppm can still be tolerated and stimulate the growth of T. erecta sprouts
THE SUSTAINABLE AGRICULTURE SUPPLY CHAINS: A BIBLIOMETRIC ANALYSIS APPROACH
Get PDFThe resilience and effectiveness of agricultural supply chains are widely recognized in supply chain management. Despite continuous advancements in environmental considerations and the competitiveness and effectiveness of supply chains, there needs to be a thorough evaluation in the literature regarding the influence of sustainable agricultural supply chains on these aspects. This study employs bibliometric analysis to explore sustainable agricultural supply chains, emphasizing essential aspects of supply chain effectiveness and the impact of a dynamically evolving environment. It bridges the divide between environmental science fields and agroindustry. Using the PRISMA VOSviewer methodology for bibliometric evaluation, Eight hundred sixty-one academic papers were meticulously chosen and examined using a thorough method that combines bibliometric and descriptive analysis. The comprehensive literature review uncovers the intricate and interconnected relationship between supply chain performance and sustainable agriculture, emphasizing the importance of promoting sustainability in a competitive business environment within a dynamic landscape. The research expands existing understanding by pinpointing seven clusters and comprehensively summarizing the present research environment. The primary themes and areas of interest in sustainable agricultural supply chains include food security, life cycle assessment, performance, blockchain, and energy. This research sets the course for future academic exploration in this crucial field and presents valuable perspectives for practitioners. The research highlights. The significance of incorporating sustainable methods within agricultural supply chains to enhance sustainability in today's quickly changing business environment, focusing on environmental and social aspects.
Influence of Enzyme Concentration, Hydrolysis Duration, and Drying Temperature on the Production of Antioxidant-containing Peptide from Catfish (Clarias sp.) Gills
Get PDFCatfish gills are a potential raw material for producing protein hydrolysate with antioxidant activity. Protein hydrolysate was produced using crude papain enzyme in two stages. The first stage was to obtain the optimum enzyme concentration (w/w) including 1%, 2%, 3%, 4%, 5% and 6%, with 0% as a control, followed by the second stage to obtain the optimum hydrolysis duration for 24, 48, 72, and 96 hours, with 0 hour as a control. The supernatant containing protein hydrolysate was then dried using an oven at various temperatures, including 60, 70, and 80°C, for 48 hours to obtain catfish gill protein hydrolysate (CGH) powder. CGH was tested for degree of hydrolysis (DH) and antioxidants, including DPPH and ABTS. The highest antioxidant activity was obtained from 3% papain with DPPH and ABTS values of 85% and 9.57 µM TEAC, respectively. Further stage on the hydrolysis duration gave 48 hours as the optimal one, with antioxidant activity of 85.25 % for DPPH and 4.29 µM TEAC for ABTS. The oven-drying temperature concluded that CGH has stable antioxidant activity. The IC50 on antioxidant activity based on DPPH ranged from 1799.85 mg/L to 1749.50 mg/L (IC50 of ascorbic acid was 2.61 mg/L) and was included as very weak. Even though based on IC50, CGH has low antioxidant activity, the protein content was found to be high (56.86±1.51%), which could be a high-protein food additive
Effects of Carrageenan and Isolated Soy Protein Addition on the Physicochemical and Sensory Properties of Chicken Sausages
Get PDFThe global demand for healthier meat products has increased due to consumer concerns over synthetic additives and interest in functional ingredients. This study investigated the effects of carrageenan and isolated soy protein (ISP) on the physicochemical and sensory properties of chicken sausages. Sausages were formulated with either 2% or 4% carrageenan or ISP and evaluated for moisture content, water activity (aw), water holding capacity (WHC), pH, color (L*, a*, b*), and sensory attributes (taste, aroma, texture, overall acceptability). Results indicated no significant differences in moisture content, aw, WHC, or color among treatments. However, the addition of 4% carrageenan significantly increased the pH. Sensory evaluation showed that while carrageenan treatments maintained favorable sensory scores, a high concentration of ISP (4%) resulted in a significantly lower texture and acceptability score. These findings suggest that carrageenan is a more suitable natural additive than ISP for improving certain quality characteristics of chicken sausages without compromising consumer preferences