bluuebunny/crossref_metadata_2025_split huggingface dataset:
Production Anti Diabetes Flour from Tanjung Fruit (Mimusops elengi L)
Authors: Maula R , Nurhaliza  , Nurlaila  , Mukhlishien  , Sofyana  , Syamsuddin Y 
Published: June 2020

Abstract
Flavonoids are phenol compounds found in various types of vegetables, cereals and fruits. Phenol compounds have activity as antidiabetic substances. Tanjung fruit waste, contains flavonoid compounds. The purpose of this study was to extract flavonoid compounds from the fruits and to investigate the effect of temperature and drying time on the quality of the flour produced. The flour products obtained were analysed for the levels of fat, ash, water, protein and carbohydrate content, and the results were compared with standard values. The results of the analysis showed that the best flour was obtained from a process with drying time and temperature conditions of 40 minutes and 100°C, respectively. In this condition, 65% flour is produced from raw materials that met the SNI-01-3751-2006 standard of wheat flour, has a long durability from mold and microbial growth, bright colour and soft texture. Flavonoids obtained from the extraction were 105.01 mg QE / mg extract. Giving flour to white mice with the dosage of more than 1 g/kg body weight showed significant reduction of its blood glucose level.
Canning of Traditional Acehnese Food Made by Dried Little Tuna (Euthynnus affinis) Using Two Sterilization Methods
Authors: Anwar S H , Poena A A R M , Muzaifa M , Hasan H 
Published: June 2020

Abstract
Dried fish of Euthynnus affinis which is also known as “little tuna” or “tongkol” is called ikan kayu in Bahasa Indonesia or keumamah in Acehnese. Keumamah is similar with Japanese katsuobushi which is prepared from dried and smoked bonito. Traditional dishes which made from keumamah are quite many and the one that is famous among Acehnese is called keumamah tumis (cooked keumamah or CK) which is cooked with special Acehnese herbs and spices. This study aimed to determine the effect of sterilization methods on the quality of canned CK. Two variables examined were the treatment of fish as raw material, i.e., B1 = boiled and sun-dried little tuna, B2 = boiled and fried little tuna and the sterilization method: M1 = water bath sterilization for 120 minutes and M2 = sterilization using pressure canner at 115 °C for 60 minutes. Heat penetration study and calculation of sterilization time (Fo value) were conducted using thermocouple data logger for canned CK sterilized using pressure canner. Proximate, total plate count (TPC) analysis and pH were done for fresh fish. Canned CK were analyzed for proximate, peroxide value, and microbiological analysis (TPC). The results showed that the canned CK had an average water content of 49.85%, ash, protein and fat content were 2.18%, 17.74%, and 21.0%, respectively. The pH was 4.85, Peroxide Value (PV) of 5.87%, and the products’ TPC were < 1 x 101 colony/g. Heat penetration study indicated that the Fo for canned CK sterilized at 115 °C for 60 minutes was 5.76 min and at 100°C for 120 minutes was 0.54 min.
The Effects of Magnesium Hydroxide (Mg(OH)2) on the Characteristics and Performance of Polyethersulfone Membranes (PES) for Water Treatment
Authors: Fathanah U , Machdar I , Riza M. , Arahman N , Lubis M R , Nurfajrina F , Yolanda A , Wahab M Y 
Published: June 2020

Abstract
Surface water is commonly used as a source of clean water, but increasingly, surface water is contaminated with various foulants. Humic acids (HAs) are a natural organic matter predominant in ground and surface waters. HAs can reduce the quality of water. This study aims to investigate the results adding magnesium hydroxide, or Mg(OH)2, to modify polyethersulfone (PES) membranes by determining the characteristics and performance of the membranes. The mixed-matrix membranes were prepared using PES and various amounts of modified Mg(OH)2 (0%, 1%, and 1.5% wt) as nanoparticle additives. A scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and water contact-angle analysis were used to characterize the membranes, followed by a membrane performance test (flux, permeability, and selectivity of the membrane) using a dead end ultrafiltration module. It can be concluded that Mg(OH)2 can improve the hydrophilicity of PES membrane with decreasing the water contact angle from 84.2° (pure PES membrane) to 68° (modified membrane), where ultrafiltration membranes with the highest permeability coefficient are obtained at 1.5% wt of Mg(OH)2 with a value of 41.94 L/m2.h.bar and a rejection percentage of 67.72%.
Landfill Leachate Management in Indonesia: A Review
Authors: Emalya N , Munawar E , Rinaldi W , Yunardi Y 
Published: June 2020

AbstractMunicipal solid waste has become a major environmental issue in Indonesia, due to the increase of population and quantity of waste, leachate production, lack of management and lack of public awareness. Landfill leachate generation and its treatment have been one of the main focus in the landfill management. Normally, leachate is formed through the seepage of water by external sources such as drainage, rain water and so on through the garbage in the landfill. Leachate contains suspended and dissolved solid pollutants, chemicals both organic and inorganic of high concentrations such as ammonia, nitrates, nitrites, sulfides, heavy metals, nitrogen and others. With such high concentration of pollutants, leachate is highly potential to pollute the groundwater and the environment. This paper presents an overview of landfill leachate management in Indonesia, discussing the characteristics of the leachate from different landfills throughout the country on the basis of the reported literatures, current practice of landfill leachate treatment in the country, and technological development of leachate treatment for possible implementation in the future.
Effect of Polyvinyl Pyrolidone Additive on the Characteristics and Performance of Polyether Sulfone Membrane for Reducement of Fe in Water
Authors: Sofyana  , Syamsuddin Y , Mulyati S , Razi F 
Published: June 2020

AbstractDecreasing the iron (Fe) content in raw water until it reaches the permitted threshold value can be done with filtration using membranes. In this study, the fabrication of membrane for Fe removal was done by using polyethersulfone (PES) as polymer and Polyvinyl Pyrrolidone (PVP) as additive. The addition of PVP aims to increase membrane swelling degree. The asymmetric membrane was prepared by phase inversion method with composition 18 wt% of PES and PVP with a concentration variation of 1; 1.5, and 2 wt%. Variations in the concentration of PVP added to the membrane influence the resulting membrane. Increasing the concentration of PVP shows an increase in the value of permeability, SEM results from modification membranes also show the different morphological structures. The results of the FTIR analysis show that the fabricated membranes have different functional groups. The swelling degree of PES, PES/PVP1, PES/PVP1.5, and PES/PVP2 membranes are increased with a value of 153 to 323%, while the overall porosity value is 62 to 142%. Membrane performance on iron content with 30 ppm feed concentration gives an optimum rejection value of 98.5%.
Adsorption Behaviour of Hazardous Dye (Methyl Orange) on Cellulose-Acetate Polyurethane Sheets
Authors: Iqhrammullah M , Marlina  , Nur S 
Published: June 2020

Abstract
Cellulose Acetate-Polyurethane (CA-PU) copolymer has been successfully prepared by a simple blending method and examined for its adsorption capacity against Methyl Orange (MO). Functional group characterization using Fourier Transform-Infrared (FTIR) confirms the urethane linkage formation as well as the presence of several essential functional groups (such as; O-H, C=O, and aromatic ring). Surface morphology changes are also observed using Scanning Electron Microscopy (SEM), where a smoother and porous structure is obtained in CA-PU. The adsorption isotherm is examined with Langmuir, Freundlich, Halsey, and Harkin-Jura models. MO adsorption on CA-PU sheets fits Freundlich isotherm (R2 = 0.9722) with KF = 279.45 mg/g. Kinetics studies of the adsorption with pseudo first-order and pseudo second-order plots exhibit that chemisorption is the adsorption limiting-rate.
CO2 emission management in palm oil industries in Indonesia: a review
Authors: Sylvia Novi , Yunardi  , Husin Husni , Muslim Abrar 
Published: June 2020

Abstract
Within a few decades, Indonesia has become the largest palm oil-producing country, leaving Malaysia behind. It is undeniable that palm oil has significantly contributed to the economic growth of the country. However, the negative impacts of the palm oil industry are also evident, such as deforestation, environmental pollution, and social conflicts. The palm oil industry has been known as one of the big greenhouse gasses producers, including CO2. Regardless of the pressure from the European Union, the Government of Indonesia (GOI) has committed to sustaining the palm oil industry since there are millions of workforces depend on their livelihood from these industries. Concerning the negative impacts, the GOI requests that each palm oil company has to follow the Indonesian Sustainable Palm Oil (ISPO) certification. So far, around 20% of all palm oil industries in the country have received an ISPO certificate. It is expected by 2023, all palm oil industries have been certified by ISPO since this regulation is mandatory. Implementing all ISPO guidelines in the palm oil industry is not only capable of sustaining the industry but also protecting the environment through the reduction of CO2 and other greenhouse gasses. This paper will review the CO2 management in the palm oil industry in Indonesia in the present situation, connected with ISPO as well as RSPO (Roundtable Sustainable Palm Oil).
Physical characteristic management and palatability of processed mung bean sprout for duck
Authors: Pujaningsih Retno Iswarin , Mangisah Istna 
Published: June 2020

Abstract
This research was conducted to observe three forms of processed mung bean sprouts on physical characteristic and palatability in 6 weeks male ducks. Mung bean sprouts were feed in the form of fine, fresh and fermented. Completely Randomized Design was used in this study as experimental design with 3 treatments and 4 replicates. Water activity, water absorption and palatability were measured as variables. The outcomes of this study showed that treatments significantly influenced water activity and mung bean sprouts palatability (P<0.05), respectively. High significantly difference was found among treatments in water absorption (P<0.01). It can be inferred from the research that to improve palatability, duck feed must contain water content between 11.5-14.46%. Mung bean sprout waste can be provided in the form of fresh or even fermented for the duck. According to its water activity, diet consist of mung bean sprout waste in the form of dried mash is recommended to be stored for a relatively longer period of time compare to the other treatments.
Utilization of durian seeds as a substitute for corn in the laying hen feed on consumption and nutrient digestibility for improving local
Authors: Mangisah I , Ismadi V D Y B , Wahyono F , Suthama N , Sukamto B , Pujaningsih R I 
Published: June 2020

Abstract
The objective of this study was to evaluate the effects of durian seed meal as a substitute for corn in the ration on feed and nutrient consumption, egg weight, and production. The study was conducted for six weeks. The material used is laying hens strain Lohmann Brown age 42 weeks as much as 120 birds. The study used Completely Randomized Design (RAL) with four treatments and five replications; each replication consisted of 6 birds. The treatments were the use of durian seed meal as a substitute for corn as much as 0, 3, 6, and 9%. Data were analyzed by ANOVA. The results showed that durian seed meal as a corn substitution significantly affects the parameter observed except feed and protein consumption. In conclusion, corn can be replaced with durian seed meal maximally by 6% without decreasing productive performance of laying hens
Analysis the cause of leakage and repair of floor plates diesel fuel tank 20-D-2 at PT BADAK NGL Indonesia
Authors: Isbah I , Mangestiyono W 
Published: June 2020

Abstract
PT. BADAK Natural Gas Liquefaction or better known as PT. BADAK NGL is a liquefied natural gas (LNG) company in Indonesia with installed capacity 22.5 MPTA of LNG. PT BADAK NGL has LNG, LPG, condensate, and diesel fuel storage tanks. There are two diesel fuel tanks available for supporting diesel equipment such as turbine diesel, marine boats, and vehicles. One of the diesel fuel tank, named 20-D-2, was constructed in 1975 based on standard API 650-Welded Tanks for Oil Storage. In 1996, after being operated for 21 years, plate replacement was needed on the tank floor and had been done as well. But in 2017, during five years of periodic inspection, severe corrosion was found again on the plate of the tank floor. In this paper, the effort to investigate the failure and plate repairment was reported. Visual observation at internal and external side on the plate of the tank floor was conducted based on NDT method (Non Destructive Testing) testing with MFL (Magnetic Flux Leakage). Plate thickness measurement of tank floor was also conducted with UT (Ultrasonic Testing). In addition, chemical analysis of residual fuel on the tank was performed to investigate sulphur concentration that potentially corrodes the plate. Scanning Electron Microscopy (SEM) was also performed to investigate the plate surface that has been corroded. Based on the analysis above, it was known that the leakage of 20-D-2 tank floor was caused by pitting corrosion, general corrosion and crevice corrosion due to rainwater that accumulated on the bottom of tank floor. Direct contact among rain water-soil-plate of tank floor was identified as the main cause of the leakage of tank floor. After leakage mechanism was identified as well, an appropriate method could be formulated to repair the tank to avoid the leakage.
Optimization of biogas production from water hyacinth by liquid anaerobic digestion (L-AD) using response surface methodology
Authors: Syafrudin  , Nugraha W D , Matin H H A , Margaretha F , Budiyono  
Published: June 2020

Abstract
In this biogas research from water hyacinth, we are using Central Composite Design and full factorial design. Enzyme (X1), C/N ratio (X2) and total solid (X3) is three experimental variables were selected as controlled factors. Performed on a laboratory scale and at room temperature with 16 runs for 60 days measured every two days. The variables were set at 3-9% for Enzyme concentration, C/N at between 20-50, and concentration of TS between 5-15% (LAD condition). Based on the research that has been done, the optimum conditions for the biogas production process from water hyacinth in Liquid State Anaerobic Digestion (LAD) conditions use Response Surface Methodology (RSM) in the variable range are the C/N ratio 30-40, 6% enzyme, and for TS was not significant factor. Following the run in the central composite experimental design, these values correspond to run number 10 with variable C/N ratio 35, enzyme 6% and TS 1.59% with biogas production 202.51 mL/g TS.
Effects of cup lump natural rubber as an additive on the characteristics of asphalt-rubber products
Authors: Bahruddin  , Arya W , Yanny S , Alfian M 
Published: June 2020

Abstract
Asphalt penetration 60/70, which is widely used for road construction in Indonesia, is the cause of road deterioration due to high traffic loads and climate changes. Therefore, the addition of polymer additives can be one of the solutions to improve the quality and service period of asphalt. The aim of this research is to study the effect of cup lump natural rubber content on the characteristics of asphalt-rubber products. The mixture of asphalt-rubber is made by melt the cup lump at 130°C, then mixed it with asphalt at 170°C. The result showed that the addition of cup lump would decreased the penetration and weight loss properties, but increased the properties such as softening point, ductility, and Marshall stability of asphalt-rubber products. The optimal addition of cup lump was at 12% with penetration 52,4 dmm, softening point 63,5°C, ductility 142 cm, weight loss 0,068%, and Marshall stability 1904,36 kg.
Landfill mining dominated by organic solid waste: a review on its benefits, potential and challenges to recovery landfills in growing cities in Indonesia
Authors: Zaulfikar  , Sudarno  , Budiyono  
Published: June 2020

Abstract
One of serious impacts of increasing human population in cities is the availability of land, strategic land in particular becomes rare and as a result, its value increases rapidly. Another impact is the amount of solid waste produced which also continues to increase sharply. Although the perception and knowledge of the community regarding solid waste is improving, it does not necessarily change their paradigm, mindsets and behaviors in minimizing solid waste, the landfill is still the final solution to solid waste. In general, the carrying capacity and supporting capacity of landfills in the cities have reached the maximum limit and must be closed immediately. Initially the locations of the landfills were far from city centres, but now generally they are in densely populated urban areas. Procurement of new landfill is constrained by regulations, costs, technical and social issues. NIMBY syndrome (not in my back yard) is the culmination of public rejection, and has even become a vertical conflict between the community and the government. The study of landfill mining, particularly the study of benefits, potential and challenges in choosing landfill mining, which is dominated by organic solid waste, is an interesting study to explore. The use of compost landfill mining as an organic fertilizer for plants, or as biocover is a logical argument for recover or extend the service life of old landfill.
Combined surface hardening of parts for friction pairs of gas turbine engines
Authors: Tabatabai D S Moeni , Boytsov A G , Kuritsyna V V , Kazantsev S A 
Published: June 2020

Abstract
The paper presents an analysis of the methods of surface hardening of parts. The authors experimentally worked out and determined the technology of combined hardening of parts of friction pairs of hydraulic pneumatic units, which allows increasing the efficiency and reliability of the units. In order to increase the life and reliability of precision friction pairs, the production feasibility of combining spark alloying and diamond smoothing has been substantiated. Technological and software for the formation of regular micro reliefs, surface reinforcement with combined processing are proposed.
Automation of scientific and technical expertise procedures in the methodology of technological audit of aircraft manufacturing
Authors: Kuritsyna V V , Kuritsyn D N , Shahrivar S M , Kazantsev S A 
Published: June 2020

Abstract
The work is devoted to issues of conceptual, informational and software problems of expert assessment of the current state, problems and development potentials of technological and production systems. The purpose of the research is to develop methods and tools for variative forecasting of operational characteristics of aircraft manufacturing facilities and automation of audit procedures for complex technological systems. The originality of this method is the use of the principles of technological inheritance of quality parameters of parts in the process of processing under the influence of technological energy and their relationship to performance characteristics. The advantage is the ability to define process controllers in the image of progressive technological operations of forming and modification of precision surfaces in order to ensure a guaranteed increase in operational efficiency by their flexible integration into production systems. A hierarchical model of the technological system implemented in the MatLAB Simulink visual modeling environment is proposed. The operation of the process controller is shown by the example of a diamond smoothing operation aimed at increasing the service life of precision friction pairs. The developed methods and tools are a tool for forming an evidence base for evaluating the technological potential, reliability, stability, and repeatability of technological processes in the total quality management system.
Functional hazards assessment of an integrated flight control system validation using model-based design
Authors: Savelev A , Lituev N , Olidaev E 
Published: June 2020

Abstract
Functional Hazard Assessment is the beginning of the work on the system safety assessment and it directly affects the design, safety and final cost of the project. Errors in the Functional Hazard Assessment can lead to insufficient system safety or unreasonably expensive development. The main purpose of the work is to introduce the Functional Hazard Assessment validation process which minimizes the risk of incorrect development of MC-21 aircraft Flight Control System. To achieve this goal, Model-Based Design methods are used as validation methods. The time benefit in detecting and isolating errors in algorithms and software with the help of the Model-Based Design is shown. Integrated Flight Control System which includes fly-by-wire control system and automatic flight control system of the Irkut’s airliner MC-21 safety requirements validation process using means of Model-Based Design is considered. As a result of the work, Integrated Flight Control System models were adapted for assessing functional hazards, and a user interface was developed for the flight crew to participate in the simulation of the failures.
Dynamic modification of the G Rasch’s logistic model for the tasks of examination the engineers’ knowledge
Authors: Kirillin A 
Published: June 2020

Abstract
Problem of efficient and safe operation of complex technical systems is always one of the most important in its life cycle. Analysis of the failures and emergencies statistics shows a trend in the growth of the human factor and a decrease of failures for technical reasons. Unfortunately, it is not possible to completely exclude human from the control system due to adherence to safety standards and industry requirements. However, issues of evaluating the professional suitability of personnel operating complex equipment, as well as issues of organizing and planning the training process, are becoming relevant. Based on a comparison of the statistical model of Georg Rasch, used to assess the preparedness of students and the degree of complexity of control tasks, with the dynamic universal model of reliability growth in the development process, used in various practical applications, a methodology for the analysis and planning of training effectiveness is developed. The algorithm of operation and application of the described methodology is illustrated by a number of examples. The dynamic modification of the presented Rasch’s statistical model allows predicting the degree of preparedness of homogeneous groups of students, thereby making it possible to plan the number of personnel training cycles for admission to work with complex and potentially dangerous technical systems.