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This research aims to formulate and examine the physicochemical characteristics and antioxidant activity of sacha inchi (Plukenetia volubilis L.) as a plant-based milk. Moreover, this research also aims to conduct organoleptic tests on the products. The sacha inchi milk is formulated with five ratios: SI1 (sacha inchi 1:10 parts water), SI2 (sacha inchi 2:10 parts water), SI3 (sacha inchi 3:10 parts water), SI4 (sacha inchi 4:10 parts water), and SI5 (sacha inchi 5:10 parts water). Organoleptic tests are carried out by assessing the aspects of taste, color and aroma of the product with a score range of 1 (least preferred) - 5 (most preferred). The results of the organoleptic test showed that the most preferred sacha inchi peanut milk formulation was SI5 with a preference level reaching a score of 4.48. The SI5 formulation is more dominantly preferred because it is richer in taste, color and aroma. Then continued with physicochemical testing which includes water content, ash content, fat content, protein content, carbohydrate content, calcium content, pH, and viscosity and IC50 antioxidant activity test using UV-Vis Spectrophotometer instrument. The results of physicochemical tests and IC50 antioxidant activity conducted in this study were respectively: water content (74.10%), ash content (0.65%), fat content (19.15%), protein content (4.29%), carbohydrate content (1.82%), calcium content (0.043%), pH (6.01), viscosity (209 mPa∙S), and IC50 antioxidant activity (429.10 ppm).  

The research project of the Open University and the National Research and Innovation Agency is taking place at the Open University, to design a turbojet engine that produces the targeted thrust at a speed (M), the height of the pilot with the rotational speed (RPM) set in the research activity. This paper presents the design of the performance of a single spool turbojet engine at Design Point (DP) and Off-Design Point (ODP) conditions. The calculation of the DP condition is solved using equations that have been provided in the literature, to obtain the appropriate mass flow rate. In the calculation of ODP with variations in temperature, pressure, Mach numbers using the C.N.Reffold semi-dimensional mass flow (SDMF) method to find the compressor pressure ratio. The purpose of this article is to present an ODP calculation that avoids the use of "nested" repetitive calculations and simplifies the solution process by using manual calculations with a success rate of less than 5%.

This study aims to analyze the comparative financial performance of manufacturing companies in the livestock feed sub-sector in Indonesia, specifically PT Charoen Pokphand Indonesia Tbk, PT Japfa Comfeed Indonesia Tbk, and PT Malindo Feedmill Tbk, during the 2019-2023 period. The research employs a descriptive quantitative analysis method using annual financial report data published by each company. Financial ratios, such as profitability, liquidity, solvency, and operational efficiency ratios, are the primary indicators used to assess financial performance.The findings reveal significant differences in the financial performance of the three companies. PT Charoen Pokphand Indonesia Tbk demonstrates excellence in profitability ratios, with consistently high net profit margins, while PT Japfa Comfeed Indonesia Tbk excels in operational efficiency. On the other hand, PT Malindo Feedmill Tbk faces challenges in maintaining solvency ratio stability. External factors, such as fluctuations in raw material prices and domestic market dynamics, also influence each company's financial performance.This study provides valuable insights for stakeholders to understand the financial conditions of the livestock feed industry in Indonesia and serves as a reference for strategic decision-making to enhance competitiveness in the market.