Articles

Amino Acid Content in Black Soldier Fly (Hermetia illucens) Oil in the Larval, Prepupal and Pupal Phases as a Feed Additive in Broiler

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The global livestock sector is facing mounting pressure to adopt sustainable and efficient feed alternatives that can meet the growing demand for animal protein. Among the emerging options, Hermetia illucens (Black Soldier Fly, BSF) oil presents a promising candidate due to its bioactive compound richness and capacity to upcycle organic waste into nutrient-dense biomass. This study investigates the essential and non-essential amino acid composition of BSF oil extracted from larvae (8 days), prepupae (14 days), and pupae (28 days) stages and evaluates its potential as a feed additive in broiler production. High-Performance Liquid Chromatography (HPLC) revealed significant variations across developmental phases, with larval oil exhibiting the highest lysine (4,467.56 mg/100g) and glutamic acid (7,564.45 mg/100g), while pupal oil was enriched in leucine (5,670.76 mg/100g) and tryptophan (4,356.79 mg/100g). The dynamic amino acid profile supports the inclusion of BSF oil as a stage-specific supplement in poultry feed, offering both nutritional and economic advantages. Findings from this study contribute to the growing body of knowledge on insect-based feed ingredients and provide critical insight for formulating phase-targeted broiler diets with optimized functional performance. However, essential amino acids such as leucine, lysine, and tryptophan remained stable or even increased. Among all stages, larval oil exhibited the richest amino acid composition, suggesting its suitability for use in high-performance starter feeds for broilers.

Modeling Gas Flow Through Blowout Preventers

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Eruptive manifestations in the oil and gas industry are often followed by environmental pollution and especially equipment destruction and human accidents. That is precisely why knowing the gas flow equations through the explosion preventers is absolutely necessary in dealing with the problems arising in the case of these industrial accidents. This material describes how natural gas behaves when it flows through vertical pipelines and through blowout preventers.

The Determination of Maximum Flow Rate in Well X Layer Y Field Z

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The field development target which usually in field X are mostly carried out in gas reservoirs over time, in several candidate wells gas reserves have started to run low so that the remaining oil reserves and pressure in the reservoir naturally decrease or natural depletion. This is due to continuous production of gas reserves. One of the wells that has the biggest potential for oil reserves in field X is well A9. In this study, the maximum flow rate was determined in the A9 layer A well in field X with a skin value of 10 using manual calculations. From manual calculations on the condition of well X with skin 10 Qmax Well X from the IPR plot results with manual calculations is 25.87 bbl/day with a PI value obtained 0.009371 stb/d/psi meanwhile in well condition X without skin the Qmax value obtained is 40.12 bbl/day with a skinless J value of 0.01457 stb/d/psi. From the determination of IPR on ECRIN, the Qmax value in well X without skin is 43.08 bbl/day, meanwhile in the condition of well X with skin 10 the Qmax value obtained is 25.84 bbl/day