Jurnal Online Universitas Teuku Umar
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EFEKTIVITAS EKSTRAK DAUN NANGKA (Artocarphus heterophyllus) UNTUK PENGOBATAN INFEKSI BAKTERI Aeromonas hydrophila PADA BENIH NILA SALIN (Oreochromis sp)
Get PDFTilapia (Oreochromis sp) is a fishery commodity that is popular with the public because it has thick flesh and a delicious taste. This study aims to test the effectiveness of jackfruit (Artocarphus heterophylluis) leaf extract in treating Aeromonas hydrophila bacterial infections in salted tilapia seeds (Oreochromis sp). The research method used in the research was a Completely Randomized Design (CRD) method with 4 treatments and 3 replications. The treatments that will be carried out are PEN0 (Control) PEN1 (0.5 ml/L), PEN2 (1.5 ml/L) and PEN3 (2.0 ml/L). Parameters observed: Clinical symptoms, length of healing time, survival rate and water quality measurements. The results of the research were that the use of jackfruit leaf extract had an effect on the survival of salted tilapia (Oreochromis sp) seeds infected with Aeromonas hydrophila bacteria. The best survival rate for saline tilapia seeds (Oreochromis sp) was found in PEN3 (jackfruit leaf extract 2.0 ml/L) with a percentage of 83% and the lowest survival rate was found in PEN0 with a percentage of 0%
Evaluation of Agroecological and Economic Efficiency of Integrated Rice-Fish Farming in Lebak Swamplands
Get PDFThis study aims to evaluate the suitability of soil and water and its implications for the productivity and income of farmers in integrated rice-fish farming in lebak swamp land. The research was conducted in Epeesi Village, Basala Sub-district, South Konawe District, using a descriptive quantitative approach with soil and water sampling, and interviews with farmers. Laboratory test results showed that the soil was classified as moderately suitable (S2 class), with a neutral pH and high organic matter content, but had limitations in the form of low phosphorus, potassium and soil porosity. Water quality was rated good in terms of temperature and pH, but dissolved oxygen content was slightly below the ideal standard. Rice productivity was recorded at 1,176 kg/ha and combined fish production reached 232 kg/ha. The economic efficiency value (R/C ratio) of 4.07 indicates that the system is financially profitable. These findings indicate that rice-fish integration has great potential to be implemented in lebak swamplands, provided that it is accompanied by adaptive land and water management as well as policy and institutional support for farmers
Green Consumerism: Determinants Of Green Product Purchase Decisions At Kedai Pustaka Coffee Shop, Bangkalan Regency, Madura Island
Get PDFThe emergence of coffee shops in various corners of the city can impact the environment, especially regarding waste production. More and more consumers are environmentally conscious, demanding business actors to develop environmentally friendly products. Like the Kedai Pustaka coffee shop, it is one of the coffee shops in Bangkalan Regency that has implemented green products. Green products themselves have a more minor impact on the environment overall. Due to implementing this policy, a decrease in sales turnover is possible, which will affect business sustainability. This study aims to discover the factors influencing consumers' purchase of green products at Kedai Pustaka. The determination of the research location was purposive, so the Kedai Pustaka was chosen as the research object. Data was collected for 43 respondents with an axial sampling technique and then analyzed using the Smart-PLS application through the SEM-PLS approach. It was found that environmental knowledge influenced attitude, and environmental attitude significantly affected the purchase decision of green products. Kedai Pustaka is expected to grow and improve knowledge and attitude toward caring for the environment from the consumer sid
Financial Performance of Pharmaceutical Companies: Before and During COVID-19 in Indonesia
Get PDFThe Covid-19 pandemic has had a significant negative impact on Indonesia’s economy. However, not all companies experienced a crisis due to this event. PT Kimia Farma Tbk, a pharmaceutical company, managed to withstand economic turmoil. This study aims to analyze the financial performance of PT Kimia Farma Tbk before and during the Covid-19 pandemic using financial ratio analysis, including liquidity, solvency, and profitability ratios. The study compares the company’s financial condition before the pandemic (2019) and during the pandemic (2020). The results indicate that the company's liquidity ratio consistently declined, signalling a weakening ability to meet short-term liabilities. Meanwhile, the solvency ratio showed an improvement in the company's financial structure despite the ongoing pandemic. However, the company should remain cautious in managing its debt. Additionally, the profitability ratio did not show significant growth, even though the demand for Covid-19-related products increase
CHALLENGES OF BUSINESS JUDGMENT RULE IMPLEMENTATION AS AN EFFORT TO PROTECT COMPANY DIRECTORS IN INDONESIA
Get PDFIn Indonesia, company executives is frequently held personally liable of any damages incurred through the business. Indeed, an analysis of the BJR reveals that director is afforded protection for their business decisions, as such decisions are seen to be made with the prudence expected of professionals in their capacity. The execution of BJR has been suboptimal in Indonesia. The research seeks to recognize the challenges and issues related to the application within the BJR principle in Indonesia and to determine whether the legal framework for limited liability companies has been comprehensively analyzed concerning the BJR principle as a protective measure for company directors.The study methodology employed is empirical juridical. The findings indicate that the persistent unsatisfactory implementation of the BJR stems from the inadequately detailed regulations concerning the BJR within the law, particularly regarding the constraints of the prudential standard, resulting in challenges in law enforcement.Uncertainty persists regarding the courts' interpretation of the BJR. The challenge in implementing BJR in Indonesia is the insufficient practical comprehension among directors and shareholders who do not fully grasp the concept of BJR. Strict rules impede the flexibility of decision-making by the committees of executives, resulting in conflicts between regulations and business practices
Pembuatan Material Pereduksi Panas Eco-Friendly Berbasis Komposit dengan Memanfaatkan Ampas Sagu
Get PDFSebagai negara produsen sagu terbesar di dunia, Indonesia memiliki potensi ampas sagu yang sangat besar yang selama ini belum dimanfaatkan secara optimal dan hanya dibuang begitu saja tanpa ada nilai manfaat yang diperoleh. Studi yang dilakukan dalam artikel ini memaparkan pemanfaatan ampas sagu dalam pembuatan komposit pereduksi panas dengan menggunakan bahan perekat resin unsaturated polyester yang murah dan banyak tersedia di pasaran. Ada tiga papan komposit yang berhasil dibuat dengan fraksi volume ampas sagu 20%, 30% dan 40%. Pengujian kemampuan dalam mereduksi panas dilakukan dengan mengukur konduktivitas termal dari komposit ampas sagu dengan menggunakan kotak pengujian dengan sensor termokopel DS18B20 yang dikontrol menggunakan mikrokontroler Arduino UNO. Kotak pengujian dibuat sedemikian rupa hingga dapat menguji empat buah spesimen komposit pada saat yang bersamaan dan dilengkapi dengan lampu 100W sebagai pemanas yang dipasang di bagian tengah atas dari kotak. Dari hasil pengujian diperoleh konduktivitas termal yang cukup rendah, k ~ 0.2 – 0.15 W/(m.K) dimana hal ini menunjukkan kemampuan mereduksi panas yang cukup baik. Persamaan korelasi yang menghubungkan persentase ampas sagu terhadap konduktivitas termal komposit juga telah berhasil dikembangkan dengan menggunakan pencocokan kurva regresi linear sederhana baik untuk keseluruhan data ataupun untuk rentang nilai dimana konduktivitas termal telah mencapai kondisi steadi
Hybrid Natural Fibre Polymer Composites: A Comprehensive Review
Get PDFHybrid natural fibre polymer composites (HNFPCs) have emerged as an innovative and sustainable alternative to conventional fibre-reinforced composites, driven by the need for eco-friendly, lightweight, and high-performance materials. This review presents a comprehensive analysis of recent advancements in HNFPCs, focusing on material constituents, fabrication techniques, resulting properties, and industrial applications. Various hybrid systems, including natural–natural and natural–synthetic fibre combinations, are explored for their synergistic potential in improving mechanical strength, thermal stability, and moisture resistance. The influence of surface modification methods and processing parameters on the interfacial bonding and durability of composites is critically discussed. A comparative evaluation of key physical and mechanical properties is provided using recent literature (2020–2024), highlighting performance trends across different hybrid configurations. Applications in automotive, aerospace, construction, marine, and consumer product sectors demonstrate the industrial relevance of HNFPCs, with an emphasis on sustainability and regulatory compliance. Despite their promise, challenges remain in property variability, limited thermal performance, and recyclability. Future perspectives suggest that integrating bio-based matrices, advanced treatments, and data-driven design will be essential in advancing the next generation of multifunctional, green composites. This review aims to provide a valuable resource for researchers and industry stakeholders seeking to optimize the development and deployment of HNFPCs for structural and semi-structural applications
Study of the Ultilization of Crustacean Waste into Commercial Chitosan Products
Get PDFSeafood shell waste from restaurants is often discarded or used as animal feed, despite its considerable untapped economic potential. One promising high-value utilization is processing this waste into chitosan, a biopolymer widely demanded in the pharmaceutical, cosmetic, and agricultural industries. This study aims to assess the financial potential of producing chitosan from seafood shell waste in small businesses. We gathered 500 grams of shell waste from multiple seafood restaurants in Pekanbaru over the course of seven days. The waste was NaOH solution stirred for 90 minutes at 70°C. The resulting Vannamei shrimp chitosan was a white powder with 2.8% moisture content and solubility in acetic acid. Meanwhile, the chitosan derived from mangrove crab shells appeared as an off-white powder with 4.34% moisture content, also soluble in acetic acid. We conducted an economic analysis by calculating the total production cost and comparing it to the market prices of chitosan on various e-commerce platforms. The results indicate that the chitosan produced has a significantly higher market value than its production cost. These findings indicate that seafood shell waste is not merely an environmental issue but also a promising economic opportunity for MSMEs. Waste-to-chitosan conversion presents an innovative strategy to promote circular economy principles and empower small-scale enterprises
DETERMINASI INDEKS PEMBANGUNAN MANUSIA DI PROVINSI ACEH: KAJIAN EMPIRIS DATA PANEL KABUPATEN/KOTA
Get PDFThis research is intended to analyze the effects of Gross Regional Domestic Product (GRDP), Local Own-Source Revenue (LOSR), Capital Expenditure (CapEx), and the Aceh Special Autonomy Fund (ASAF) on the Human Development Index (HDI) in Aceh Province over the period from 2019 to 2023. The study employs a panel data regression approach utilizing the EViews 10 software to evaluate the proposed hypotheses. The variables incorporated in this analysis include GRDP, PAD, BM, DOKA, and HDI. The data utilized consists of secondary data, combining time series and cross-sectional datasets spanning 2019 to 2023. The estimation findings reveal that individually, Gross Regional Domestic Product (GRDP) exerts a significant and favorable impact on the Human Development Index (HDI) within Aceh Province, supported by statistical significance; PAD demonstrates a positive yet statistically insignificant effect on HDI; BM also shows a positive but non-significant impact; In contrast, the Aceh Special Autonomy Fund (DOKA) demonstrates an inverse and statistically meaningful connection with The Human Development Index (HDI). When combined, these variables jointly exert a positive and statistically significant effect on the Human Development Index (HDI) throughout Aceh Province
Estimasi Cadangan Karbon Pada Biomassa Vegetasi Lamun Di Desa Kahyapu Dan Desa Kaana Pulau Enggano, Bengkulu
Get PDFLamun memiliki fungsi ekologis penting sebagai penyerap karbon dioksida (CO2), yang dikategorikan sebagai bagian dari blue carbon atau karbon biru. Gas CO2 tersebut diserap oleh tumbuhan lamun dan dikonversi menjadi biomassa melalui proses fotosintesis. Estimasi cadangan karbon dalam biomassa lamun dapat dihitung melalui pendekatan kuantitatif yang melibatkan hubungan antara kerapatan tumbuhan, total biomassa, dan konsentrasi karbon dalam jaringan vegetatifnya. Penelitian ini dilakukan pada ekosistem lamun yang berada di wilayah perairan Desa Kahyapu dan Desa Kaana, Pulau Enggano, Provinsi Bengkulu. Pengumpulan data menggunakan metode purposive sampling dengan teknik transek kuadrat berukuran 1 m × 1 m, sedangkan analisis kandungan karbon dilakukan berdasarkan metode Walkey dan Black (1934). Tujuan utama dari penelitian ini adalah untuk menganalisis besaran cadangan karbon yang tersimpan pada biomassa lamun, baik pada komponen di atas substrat (daun) maupun di bawah substrat (akar dan rimpang). Hasil penelitian mengidentifikasi tiga spesies lamun, yaitu Enhalus acoroides, Thalassia hemprichii, dan Cymodocea spp. Di antara ketiganya, Enhalus acoroides menunjukkan nilai cadangan karbon tertinggi dengan rata-rata 50,75 g C/m2, diikuti oleh Thalassia hemprichii dengan rata-rata 17,53 g C/m2, dan Cymodocea spp. dengan rata-rata 2,99 g C/m2