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Soil Quality Evaluation of Inceptisol Based on the Alberta Card (Case Study of Horticultural Land in Titi Papan, Medan Deli District)
Full text linkSoil quality describes the suitability of the physical, chemical, and biological properties of soil that together function as a medium for plant growth. The Alberta Soil Quality Card is one method for evaluating soil quality through soil quality indicators, such as organic matter content, drainage, water-holding capacity, soil microorganisms, and erosion. This research was conducted to evaluate the Inceptisols soil quality of horticulture land in Titi Papan, Medan Deli District, based on the indicators listed in the Alberta Soil Quality Card to obtain appropriate soil management recommendations based on the evaluation results. The results of soil quality observation in the horticultural land of Titi Papan, Medan Deli District, indicate that the preferred score (P) is found in the indicators of plant/weed strength, nurseries, soil fertility, and salinity. A medium score (M) is obtained in the indicators of residue cover, organic material color, drainage/infiltration, aggregation, and soil life, including the presence of worms, compaction/rooting, and water erosion. The limiting factor with a low score (L) is obtained in the indicator of water holding capacity.
 
Finite Element Analysis and Root Cause Analysis of Wire Rope Failure in STS Cranes
Full text linkWire rope is a critical lifting component in Ship-to-Shore (STS) cranes, whose failure can lead to catastrophic system breakdowns, posing significant safety risks and operational losses. This study investigates the root causes of wire rope failure on a 40-ton capacity STS crane. The methodology integrates Root Cause Analysis (RCA) with a Finite Element Analysis (FEA) simulation using ANSYS Static Structural. The analyzed wire rope has a 28 mm diameter, a 6x36 IWRC configuration, and is made of galvanized high-carbon steel. Simulation results under full operational load revealed a maximum von Mises stress of 681 MPa, exceeding the material's yield strength (≈650 MPa), a total displacement of 16 cm, and a critically low safety factor of 0.53. The failure location was identified on the outer strands at the contact points with sheaves, indicating high-stress concentration zones. Furthermore, the calculated Safe Working Load (SWL) for a standard safety factor of 5 was 82.83 kN, which is drastically lower than the 400 kN operational load per rope, confirming severe overstress conditions. The RCA fishbone diagram identified key contributing factors: material specification mismatch, suboptimal sheave design, inadequate maintenance protocols, and insufficient design-stage analysis. The study concludes that the wire rope is unfit for service under current conditions and recommends immediate replacement, revised preventive maintenance schedules incorporating FEA, design optimization of support components, and implementation of real-time load monitoring systems
The relationship of physical activity, dietary patterns, and energy intake with overweight incidence among Sabhara members at Langkat police station
Full text linkOccupational Safety and Health (OSH) is an effort to ensure the physical and mental well-being of workers, which is essential for productivity. Health and work ability are closely related to nutritional status, where balanced calorie intake supports energy and effective task performance. Conversely, being overweight or obese increases the risk of degenerative diseases and is influenced by multifactorial causes such as genetics, lifestyle, and poor diet. This study aimed to examine the relationship between physical activity, dietary patterns, and energy intake with overweight among SABHARA members at the Langkat Police Headquarters as an important basis for health interventions. This study employed an analytical quantitative method with a cross-sectional design. The sample was obtained through simple random sampling, consisting of 49 members. The data collected included nutritional status (body scale, micrometer), energy intake (24-hour food recall), dietary patterns (FFQ), and physical activity (IPAQ Short-Form). The data were analysed using the Chi-Square test. The results showed that 57.1% of members were overweight, 18.3% had low physical activity, 53.1% had poor energy intake, and 49.0% had inadequate dietary patterns. The findings showed a significant relationship between physical activity, dietary patterns, and energy intake with overweight.
Effect of Giving Types And Doses of Organic Matter on The Growth And Yield of Sweet Corn (Zea mays saccharata Sturt) In Tidal Land
Full text linkPenelitian ini bertujuan untuk mengetahui pengaruh jenis dan dosis bahan organik terhadap pertumbuhan dan hasil jagung manis (Zea mays saccharata Sturt) di lahan pasang surut. Penelitian dilaksanakan di Desa Rasau Jaya III, Kecamatan Rasau Jaya, Kabupaten Kubu Raya. Penelitian ini dilaksanakan selama 4 (empat) bulan dimulai dari bulan Januari 2021 sampai bulan April 2021. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan pola faktorial, 2 faktor, yaitu: faktor I adalah penggunaan Jenis Bahan Organik dengan kode P yang terdiri dari tiga taraf yaitu : P1= kompos organik jerami padi P2= pupuk kandang sapi dan P3= pupuk kandang ayam. Faktor II dosis bahan organik dengan kode D yang terdiri dari tiga taraf yaitu: D1= 5 ton bahan organik /ha (1,125 kg/petak), D2= 10 ton bahan organik /ha (2,25 kg/petak), D3= 15 ton bahan organik/ha (3,375 kg/petak). Variabel yang diamati dalam penelitian adalah tinggi tanaman, jumlah daun, berat tongkol tanpa kelobot per tanaman dan berat tongkol tanpa kelobot per petak. Berdasarkan hasil penelitian pengaruh jenis dan dosis bahan organik terhadap pertumbuhan dan hasil tanaman jagung pada lahan pasang surut, interaksi perlakuan jenis dan dosis bahan organik berpengaruh tidak nyata pada semua variabel yang diamati meliputi tinggi tanaman, jumlah daun, berat tongkol per tanaman, dan berat tongkol per petak. Pengaruh mandiri jenis bahan organik berpengaruh sangat nyata pada semua variabel yang diamati meliputi : jumlah daun, berat tongkol per tanaman, dan berat tongkol per petak. Taraf Perlakuan P3D2 menunjukkan hasil terbaik pada variabel tinggi tanaman (3,03 m), jumlah daun (13 helai), berat tongkol (336,67 g) dan berat tongkol per petak (4,93 kg)
Identification of the Diversity of Morphological Characteristics of Some Local Upland Rice Cultivars in East Aceh
Full text linkIt is important to characterize the traits of local cultivars both morphologically, physiologically, and genetically. Characterization is a process aimed at identifying important traits economically valuable and beneficial for agriculture or determining the relevant characteristics varieties. The objective of this study was to determine the diversity of several local upland rice cultivars from East Aceh and identifying the morphological characteristics of these cultivars. The research was conducted over 4 months, from October to February 2023, at the experimental field of the Faculty of Agriculture, Samudra University, Langsa City, Aceh, with an elevation of approximately 10 meters above sea level and a soil pH of 5.9. The study used data from both qualitative and quantitative traits, which were tabulated and then analyzed for kinship relationships using IBM SPSS software with hierarchical clustering analysis using Euclidean distance. The results indicated that the testing of several local upland rice cultivars from East Aceh, based on morphological characterization, showed differences in the number of tillers, flower characteristics, panicles, and leaf traits. However, there were no differences plant height, number of productive tillers, leaf blade color, and 1000-grain weight when observing grain weight. Differences in growth and production characteristics were due to interactions between genetic and environmental factors, leading to variability in traits among the tested cultivars. Based on the morphological characteristics of the 10 local upland rice cultivars from East Aceh, the Ramos Gunung and Sibontot cultivars were found to be among the most promising for development due to their highest production yields compared to other cultivars.
Social Entrepreneurship and Its Impact on Agriculture in Malaysia
Full text linkThis article explains the practice of social entrepreneurship and its impact on agriculture in Malaysia using a critical and systematic qualitative research approach. Several sources used are the researcher's direct experience, books, journals, and other scientific works. The results of the study indicate that social entrepreneurship has been able to provide a positive impact on agriculture in Malaysia, including being able to overcome systematic challenges, including low income, unsecured environmental quality, and sustainable social entrepreneurship development in developing solutions that empower farmers and rural communities so that a balance is created between the lives of rural communities and the lives of urban communities that are often considered unrelated to each other
The Bioprospecting of endophytic fungi in mangrove as natural anti-Vibrio parahaemolyticus
Full text linkVibriosis caused by Vibrio, such as V. parahaemolyticus, is one of several issues in shrimp farming. Antibiotic misuse in disease controlling is suspected of producing environmental contamination resistance of micorbia, and rejecting the products. One of the efforts that can be made to overcome vibriosis by utilizing endophytic fungi in mangroves. This is due to the similarity of bioactive compounds produced by mangroves and endophytic microorganisms. The aim of this research was to analyze at the bioprospection of endophytic fungi as anti-V. parahaemolyticus at the Lampung Mangrove Center (LMC). The aim of this study was to analyze at the bioprospection of endophytic fungi as anti-V. parahaemolyticus at the Lampung Mangrove Center. The method used in the study was exploratory by isolating endophytic fungi from the roots and leaves of mangrove plants that predominantly grow in LMC for further biaoctivity screening process against V. parahaemolyticus. This study employs an exploratory approach with descriptive analysis. Based on the antibacterial activity test using the agar plug method, 9 out of 76 fungal isolates showed the ability to inhibit the growth of V. parahaemolyticus, namely isolates coded L-A1-MD1, L-A1-MD2, L-A1-MD3, L-A2-MA4, L-A2-MA5, L-A2-MA6, L-B1-MD18, L-P4-MA47, and L-A6-MA79. All isolates of endophytic fungi that had bactericidal activity against V. parahameolyticus predominantly come from the mangrove plant Avicena marina
The Effect of E-Commerce on Social Networks and Consumer Dependence among University of North Sumatera (USU) Students
Full text linkThis research aims to evaluate and study the impact of e-commerce on social networks and the level of dependency of USU students. This research involves surveys and data analysis from USU students who actively use e-commerce platforms. The results of this research show that e-commerce has a positive effect on expanding USU students' social networks, with increased social interaction through this platform. In addition, this research shows that USU students tend to become more dependent on e-commerce in the shopping process and interacting with available products and brands. Therefore, it is important to better understand the use of e-commerce by college students and its impact on social networks and consumer behavior
Nanofluid thermosetting adhesives for bonding forest-based lignocellulosic materials: A Brief Review of Synthesis, characterization, and applications
Full text linkvarious industries, including electrical microchannels, engines, spacecraft,nuclear, and solar energy. Nanofluids are created by floating small nanoparticlesin base fluids such as water or ethylene glycol, with or without stabilizingmethods. The typical size of nanoparticles is less than 100 nm2. Nanofluidthermosetting adhesives have the advantages of enhanced bonding strength,improved thermal conductivity, and reduced curing time. These qualities mightimprove the performance of thermosetting adhesives, which harden or set whenheated. However, the creation of such adhesives would necessitate variousdisadvantages, such as high cost of production and potential health andenvironmental risks. Understanding the physicochemical mechanism of usingnanofluids in the adhesive would be critical. This would include examining theeffects of particle size, shape, surfactant, temperature, etc. on thermalconductivity. While developing nanofluid thermosetting adhesives offers greatopportunities, it also requires overcoming several technical hurdles. Further studyin this area may lead to the creation of adhesives with improved thermal andadhesive qualities. Applications of nanofluid adhesives might cover a broad areaof the wood industry, particularly furniture manufacturing and wooden flooring.This study reviewed possible methods of synthesizing, characterization, andapplications of nanofluid thermosetting adhesives for wood-based composites
Effect of Mean Platelet Volume on Outcome of Stroke Infark in Elderly Patient
Full text linkBackground: Hyperreactivity and activation of platelet play a role in the occurrence and severity of ischemic stroke in geriatric patients. Mean Platelet Volume (MPV) describes levels of stimulation as well as platelet production rates that may affect the incidence of ischemic stroke and its clinical outcome. Objective: To determine the effect of MPV on the outcome of stroke infarction in geriatric patients. Methods: This was a cohort study. MPV measured at hospital admission. Statistical analysis carried out by Receiver of Curve (ROC) test to determine the MPV cut off point and Chi-square to determine the relationship between MPV and infarction of stroke patient using SPSS v.22. Results: There were 52 stroke patients with mean age 68.25+6.06 years. Clinical outcomes deteriorated in 38 (73.08%) patients. The AUC value of MPV was 73.3% (p=0.011) with MPV cut off point 10.85fl. Deterioration occurred in 10 (43.38%) patient with MPV >10.85fl. The Chi-square test result was (p<0.001) showing a difference between the groups (RR 3.125 CI 95% 1.134-8.761). Conclusion: Ischemic stroke patients with MPV levels >10.85fl at hospital admission had 3 times chance of deterioration. MPV can be used as prognostic factor for clinical outcome of acute ischemic stroke in geriatric patients