Explore the vast range of titles available.

Decommissioning is the process of dismantling a portion or all of an installation and transporting the disassembled materials to a specific location. To manage the possible and impact of risks that might arise during the decommissioning process, risk analysis is carried out. In this study, a risk assessment was conducted on the decommissioning of a four-legged jacket platform. The analysis method used was Fuzzy Failure Mode and Effect Analysis (fuzzy-FMEA), which uses a fuzzification process to identify the dominant risks and generate fuzzy-RPN (FRPN). It was found that residual hydrocarbon leakage was the dominant risk with FRPN 9, and further risk analysis was carried out using Fault Tree Analysis (FTA) to identify the root causes of the dominant risk, which were planning errors with probability 0,00026645 and Sealing failures occur with a probability of 0.00044118. Bowtie Analysis was used as a risk management tool, resulting in preventive and mitigation efforts. One of the preventive measures for the identified risks was to verify and validate the current well conditions, while mitigation efforts included narrowing the leakage area and installing a hydrocarbon detector.

In the heterogeneous system, reaction temperature and catalyst loading are very affected to the fluid diffusivities and molecular interaction in the active sites of catalyst. Theoritically, increasing both of them ensued to increases the chemical reaction rate. The aim of this research was to know how the effect of reaction temperature and catalyst loading to reaction rate in esterification of oleic acid with glycerol, based on oleic acid conversion result. The experiments were Carried out in a batch reactor by the reaction temperature from 160 to 200°C, catalyst loading of 0.5 to 2 wt% of solution, the reactants glycerol ratio of 3 mole / mole of oleic acid, reaction time of 80 minutes, agitation speed of 600 rpm, and mordernite natural zeolite as a catalyst. Observation result Showed that increasing the reaction temperature and catalyst loading were Accompanying by increases of oleic acid conversion. The highest conversion to reach at reaction temperature of 200°C and a catalyst loading of 2 wt% that was 75.09%.

This study aims to analyze the density of Cloud to Ground lightning strikes in the Tuban Regency area from September 2022 to January 2023 using the help of a Geographic Information System (GIS). After processing and analyzing the data, the results were that the highest lightning strike density occurred in October 2022, with 40240 strikes, while the lowest occurred in 2790 strikes. The total number of strikes from September to January is 135249 strikes. Based on aspects of the earth’s surface, it was obtained that the density of cloud to ground lightning strikes that occurred in the Tuban Regency area increased along with increasing height. This can be seen where the southern part of Tuban Regency, namely in the sub-districts bordering Bojonegoro Regency, including Parengan, Soko, and Senori sub-districts, has the highest level of vulnerability.

Environmental quality in urban schools is a major factor that can reduce the quality of life in cities. Although people’s exposure to environmental noise has become a global concern, most cities still experience noise levels that interfere with human activities. This aims to assess the impact of environmental noise in the vicinity of primary schools. Environmental quality measurements consist of noise, temperature, Carbon Monoxide (CO), Carbon Dioxide (CO 2 ) and humidity measurements. Environmental quality measurements were conducted in 30 schools. Noise, CO, and CO 2 measurements were taken in front of the school and temperature and humidity measurements were taken in the bathroom. The measurement results show that 100% of the noise level in the school is unqualified, the average CO 2 concentration of the school is qualified, the average school temperature is still unqualified at above 90%, the average humidity level in the school is unqualified which is still above 50% while the CO concentration of 100% of the school is qualified. Recommendations to schools should pay attention to the level of humidity and temperature in the bathroom by providing better circulation.

This work was carried out to characterize the physical and mechanical properties of unhulled arabica coffee bean. The results of this work found that at moisture content of 18.76 ± 0.19 % wb, the average length, width, thickness, geometric diameter and surface area of unhulled coffee bean ranged from 12.04 ± 1.06 mm, 8.24 ± 0.45 mm, 4.99± 0.34 mm, 7.90 ± 0.38 mm and 196.44 ± 19.09 mm2 respectively. The average mass and volume ranged from 0.21 ± 0.06 g and 0.21 ± 0.06 cm3 respectively. The average particle density, bulk density and sphericity ranged from 1.00 ± 0.02 g/cm3, 0.40 ± 0.01 g/cm3 and 0.66 ± 0.04% respectively. The average porosity, aspect ratio, and shell content ranged from 60.16 ± 1.09 %, 68.88 ± 6.38% and 16.55 ± 5.70% respectively. The average hardness and fracturability ranged from 12.34 ± 1.28 gf and 2.45 ± 0.08 gf respectively. Regarding the angle of repose on the surface of stainless steel, aluminum, acrylic, and plywood results showed that the average emptying angle of repose ranged from 26.88 ± 3.67°, 29.44 ± 3.35°, 30.01 ± 4.83° and 40.0° ± 7.00° respectively, and the average filling angle of repose ranged from 32.02 ± 2.880°. Concerning friction, results of measurement indicated that average static friction of stainless steel, aluminum, acrylic, and plywood ranged from 0.36 ± 0.02, 0.40 ± 0.03, 0.38 ± 0.04 and 0.45 ±0.03 respectively. The highest emptying angle of repose occurred on the surface of plywood inversely of that was occurring on the surface of stainless steel. There was a positive relationship between the angle of repose and the static friction.

Products in the form of assessment instruments are packed in book form. Guidance on the use of authentic assessment instruments of the performance of elementary school students that contain; 1) assessment purpose; 2) the division of the syllabus; 3) lattice; 4) observation sheet; 5) rubric. This research is an R & D development model using Borg and Gall analysis that modifies researchers into three stages including: (1) introduction; (2) product development (development); (3) Presentation of product development result. Research subjects at SD Nurrusshidiq city Cirebon and SDN Karanganyar Cirebon City. Validity uses expert validation from four assessors with expert valuation techniques. Performance assessment comes from three evaluation experts, a mathematical instrument and one senior math teacher. (1) An overview of existing instruments in Cirebon Elementary School in Mathematics learning is that teachers still use the description of the tests in the classroom assessment process. (2) The stage of development of this study consists of the initial stage that contains the needs analysis, grid making, the manufacture of performance appraisal instruments, development stage consisting of expert validity test, small-scale test, and stage presentation consisting of large-scale experiments and test the practicality of the instrument. (3) Experimental results of the assessment.

Crisis Resource Management (CRM) is critical in managing code trauma cases, yet remains underemphasized in many medical training programs in Indonesia. This study aimed to develop and evaluate a virtual reality (VR)-based CRM training module tailored for emergency physicians. A pilot CRM module was designed through expert focused group discussions (FGDs) and refined using the Delphi method. The module included a lecture, roundtable discussion, and VR simulation. Fifteen emergency physicians participated in the training and were assessed using pre- and post-tests, a checklist based on CRM objectives, the Ottawa General Rating Scale (GRS), and a satisfaction questionnaire. Participants showed a significant improvement in knowledge (mean pretest 70 vs posttest 95.33; p < 0.001). Checklist completion rates had a median of 81% individually and 80% at the team level. Ottawa GRS scores indicated strong performance in leadership, problem-solving, communication, and situational awareness (overall mean score: 6.2/7). Satisfaction ratings reflected positive participant experiences with the module. VR-based simulation is an effective, accessible tool for enhancing CRM skills in emergency settings, particularly in low-resource or remote environments. The module demonstrated high participant satisfaction and notable improvements in both individual and team performance and incorporating VR into trauma team CRM training should be considered.

Increasing agricultural production, especially rice, uses a lot of chemical fertilizers, which can have a negative effect on the environment. The solution sought to overcome the impact of using chemical fertilizers is using biological organic fertilizer (POH) beyonic startmix, which contains microorganisms that provide plant nutrients, produce growth hormones, and protect plants from pests and diseases. The study aimed to determine the effect of startmix beyonic organic fertilizer on the growth and yield of inpari 30 rice. The study was carried out in the Motekar farmer group’s paddy fields in Jabong Village, Pagaden District, Subang Regency. The study lasted four months, starting from January to April 2018. The study used a field experiment method using a Randomized Block Design (RBD) pattern, which consisted of 2 treatments, namely with fertilization and without fertilization with startmix beyonic biological organic fertilizer, each carried out on three plots with five replicates. Parameters observed included plant height, number of tillers, number of panicles, number of grains per panicle, the weight of 1000 dry grain seeds, and grain yield. The results showed that applying POH significantly affected the number of tillers, panicles, and paddy yields. The yield of dry milled grain with POH was, on average, 7.463 tons/ha, 16.91% higher than without POH fertilization at 6.201 tons/ha on average.

Banana is a fruit that possesses high nutritional contents, especially vitamins and minerals. Banana flour is one of the diversification products in bananas processing that could extend shelf life and add economic benefit, and this product can be further processed into banana flakes. Flakes are ready-to-eat food ingredients that are usually used for breakfast. However, information about the maturity level of bananas on the physicochemical properties of flakes has remained unknown. Therefore, this study aimed to determine the effect of the maturity level of ambon banana flour on the physicochemical properties of banana flakes. The research design used in this study was a randomized block design with the research treatment consisting of 2 factors, namely the maturity level of banana flour (A) and baking time (B) with three replications. The best sample was taken from each group and then the scoring test was carried out until the best sample was obtained. Subsequently, the overall best sample was physicochemically characterized. The results showed that the selected treatment was A1B3 (ripe banana flour, 25 minutes). This study revealed that the flake trials' ripe banana flour from ambon cultivar showed the best physiochemical properties.

Bananas are rich in minerals such as potassium, magnesium, iron, phosphorus, and calcium, contain vitamins A, B6 and C and contain serotonin which is active as a neurotransmitter for intelligence. Bananas can be processed into semi-finished products or finished products. One of the semi-finished products from bananas is Banana Flour. Banana flour is an alternative to banana preservation because bananas are perishable fruits. Banana flour can be made from unripe bananas and ripe bananas. The types of breakfast cereals that are most consumed or preferred by consumers are products in the form of breakfast drinks, extruded products and flakes. Flakes belong to the cereal milk food group. The purpose of this study was to determine the organoleptic characteristics of banana flakes made from banana flour with different ripeness levels of bananas. The research methodology included organoleptic test with the hedonic test method on a scale of 1-7, with a total of 30 panelists. The test parameters carried out include color, taste, aroma, hardness, crunchiness and overall acceptance. The results showed that the sample a1b3 (ripe banana flour, 25 minutes of roasting) was the most preferred by the panelists, with test values for color 5.40, taste 5.90, aroma, 5.63, hardness 5.50, crispness 5.67, overall admission of 6.07.