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Nusantara Science and Technology Proceedings
Published by Future Science
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Arjuna Subject : Ilmu Ekonomi, Ekonometrika dan Keuangan (semua kategori) - Ilmu Ekonomi, Ekonometrika dan Keuangan (Lain-Lain)
Articles 45 Documents
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Search results for , issue "1st International Conference Eco-Innovation in Science, Engineering, and Technology" : 45 Documents clear
Production Forecast Studies for Oil Well Performance Prediction and Field De-velopment Scenario Using Decline Curve Analysis in Multilayer Reservoirs: A Case Study of Field Z Cahyadi Julianto; Hidayat Tulloh; Aldi Priambodo; Muhammad Rizky Nugroho; Haykal Kurniawan
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0520

Abstract

Field Z is located in the south Sumatra region with a reservoir located in the Talang Akar and Baturaja formation. Field Z has 9 layers and 29 wells have been produced until 2019. Based on the calculation of the JJ Arps method (water drive), the recovery factor of Layer 1 is 42,834%, RF layer 2 is 42.62% and layer 6 is 40.16%. This Arps can be estimated how much oil can be produced from OOIP owned by the reservoir. From these results obtained volumetric In-Place magnitude at Layer 1 = 11.52 MMSTB, Layer 2 = 17.99 MMSTB, and Layer 6 = 7.50 MMSTB. But the recovery factor of the Z field is currently only 9.67% in the last year of 2019. From this statement, it is necessary to develop a field development scenario. The method in this paper is to take data from the field and then the data is processed to forecast production using a decline curve analysis (DCA) using Oil Field Management software. After forecasting production, a scenario is then performed to extend the production life of the well.
The Effect of Soaking Time and Temperature of Acetic Acid Solution to the De-crease of Calcium Oxalate Levels in Porang Tubers Ratih Kusuma Wardani; Djamilah Arifiyana
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0522

Abstract

Porang is one of the tubers that grow easily in the plains of Indonesia, one of which is in the Madiun city area, East Java. Porang tubers can be used in various sectors, namely in food processing. Porang tubers are used as the basic material for making food, such as flour. However, porang tubers contain high levels of calcium oxalate. It can cause itchy tongue and throat. This study aimed to determine the effect of temperature and soaking time of porang tubers in 5% acetic acid solution. Soaking the porang tuber sample at 60°C had the greatest decrease percentage in calcium oxalate, which was 53.91%. Soaking the porang tubers for 60 minutes also gave the largest reduction percentage in calcium oxalate, namely 42.54%.
Survey of Livestock Counting and Tracking Methods Sarwar, Farah; Pasang , Timotius; Griffin , Anthony; Saeed-Ur-Rehman
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0523

Abstract

Conventional livestock counting methods are tedious, time-consuming, and labor-intensive for farmers, which makes counting an irregular task. This inability to constantly monitor stock numbers gives farm rustlers sufficient time to steal farm animals and hence leads to a significant financial loss annually. To overcome this issue, research using unmanned aerial vehicles (UAVs) in pastoral farming is growing progressively since the last decade, but their use is still limited to some extent. This research article gives a detailed analysis of the existing hardware-based and software-based methods. The impact of shifting from current methods to a UAV-based system is discussed using the findings of research articles, and algorithms for object detection in images and tracking in videos are also analyzed. The article concludes that there are still unexplored practical uses of UAV in pastoral farming for monitoring, counting, and tracking farm animals, especially in countries like New Zealand, where pastoral products cover a major portion of export revenue.
Synthesis of Edible Film from Crab Shell Chitosan and Banana Peel Starch Santi, Sintha Soraya; Hariyanto, Ayu Puspita Kandhi; Hartono, Muhamad Dendy
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0524

Abstract

Nowadays the use of plastics has become an important material so that the demand for home products as well as in industrial production is increasing. The activity of using plastics is increasing, causing complex environmental problems because it’s non-biodegradable. One of the biodegradable plastics is an edible film, which is a thin layer as a food packaging or coating which can be consumed together with the packaged product. In this research, the edible film was made using a synthesis method with raw materials such as crab shell chitosan, banana peel starch, and glycerol. Chitosan effects film reinforcement, starch functions as a film matrix former and glycerol also functions to increase the flexibility of the film. Through this research, it is hoped that the ratio of raw materials for the edible film including starch, chitosan, and glycerol can affect the characteristics of edible film such as tensile strength, percent elongation, percent of the solubility value in water.
Production of Lactic Acid from Microalgal Biomass Chlorella vulgar ESP-31 as a feedstock using PVA Immobilized Bacteria L. Plantarum 23 Nandini , Atika; Nagarajan , Dilirani; Chang , Jo-Shu
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0525

Abstract

Lactic acid is a valuable industrial chemical that is mostly used in the food and non-food industries such as the pharmaceutical industry. Production of lactic acid from renewable materials can be an alternative method to reduce the high production cost associated with raw material acquirement. In this study, polyvinyl alcohol (PVA) immobilized L. plantarum 23 was used. To obtain high lactic acid productivity and yield from renewable feedstock, the optimal fermentation conditions were determined in both batch and continuous mode. The renewable feedstock used was microalgal biomass Chlorella vulgaris ESP-31. The optimal conditions for this fermentation are pH 5.5, temperature 30°C, PVA particle loading 12.5%, PVA concentration 5.25g cell/L, HRT: 2-4 hrs, carbon source concentration 40 g/L. The feedstock was pretreated and hydrolyzed appropriately and the reducing sugars obtained were used. With microalgal sugars as a feedstock in continuous fermentation mode, the maximum lactic acid productivity of 12.59 g/L/h was achieved, compared to glucose (7.39 g/L/h). The highest yield achieved in this study (0,98 g/g) was obtained when using pure glucose as the feedstock. Considering high productivity as the most important parameter, microalgal biomass seems to be the best feedstock for lactic acid production in continuous fermentation, giving high productivity and yield of 12.59 g/L/h and 0.91 g/g, respectively.
Study of Making Potassium Posphate from Seaweed Industrial Wastewater Pujiastuti, Caecilia; Sumada, Ketut; Ngatilah, Yustina; Widya P, Vika; Arief S, Purwanto
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0526

Abstract

Seaweed industrial wastewater which contains 17.9% potassium can be used as a raw material for making multi-nutrient fertilizers. 1 liter of wastewater is reacted with 1 N phosphoric acid with a certain volume (15, 20, 25, 30, 35 ml) and 30 ml of aluminum sulfate (17,18,19,20,21%) stirred at a speed of 35 rpm for 25 minutes. The precipitate formed is dried. The results showed that the greater the volume of acid and the concentration of aluminum sulfate added with fertilizer obtained and the K, P, and S ion content was getting smaller. Fertilizer produced with the highest content of K ions (9.3%), P ions (9.7%), and S (9.295%) was obtained in the addition of 17% Aluminum Sulfate coagulant and 15 ml volume of H3PO4 (1N), and fertilizers produced weighing 4.0128 grams.
Experiment Design Effects of Cooling Media Variations Toward Strictness and Pulling Strenghness of Materials of ST 41 in Heat Treatment Process Sumiati; Verayanti, Fransisca Diah Ayu; Purwati
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0527

Abstract

Steel of ST 41 is the steel be classified as low carbon steel with guide compositions about 0.37-0.43%C, 0.5-0.35%Si, 0.60-0.90%Mn. The steel sometimes has the unfit characteristic to the need, so It needs another treatment to change characteristic and structure from steel of ST 41 itself be changed in heat treatment methods. Cooling media can affect the strictness characteristics of steel of ST 41. The heating process in the research uses 723oC withholding in an hour. Then it is cooled quickly in many Cooling media. Cooling media be used in the research are water, salt, and coconut oil by using holding time on each Cooling media in 5 to 20 minutes. After done in Quenching process, the steel of ST 41 is done strictness tests and strengths tests to use Rockwell method tests and analyzed. This research result will recommend on general formulation to predict in strictness of steel of ST 41, if it use two co positions namely: Y= 97.2118+0.0983*x-0.4223*y 0.0114*x*x+0.0026*x*y+0.0023 *y*y. can predict pulling strength ness of ST 41 material, For a while if they use two compositions namely Y = 46.7828+0.3293*x+0.2271*y-0.0132*x*x-1.1689E-14*x*y-0.0009*y*y. so each x1 and x2 areas holding time and temperature.
Study the Effect of Smoking on the Potential of Human Resources Sunardi; Kurniawan, Muhammad Rezki Agus; MT Safirin
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0528

Abstract

Human resources have an important role in development so that the potential need to be developed. Fatigue is a normal condition in everyday life. In general, fatigue can be divided into two namely, physical fatigue (physical fatigue) and mental fatigue (mental fatigue). Many factors can cause fatigue in humans, one of which is smoking behavior. Smoking in adolescence, especially working age will disrupt fitness, especially cardiorespiratory endurance. One method that can support this research is the Response Surface Methodology method. The results showed that smoking for nine years with moderate consumption of cigarettes at the age of work did not affect physical or mental fatigue, but there was a tendency to increase a little mental and physical fatigue. Improved predictability can significantly reduce physical endurance.
Optimization of Annual and Five Years Tax Payment Services for Motorized Vehicles in Samsat "X" Ngatilah , Yustina; Siati; Pujiastuti , Caecilia
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0529

Abstract

The Samsat "X" office is a joint service office between the police, the regional income office, and the Jasa Raharja. The services provided are annual and five years of tax payments for motorized vehicles. The current service process is having an uncertain or probabilistic service time and long waiting time, resulting in long queues. This long queue condition causes taxpayer dissatisfaction. One of the methods to solve this problem is the Monte Carlo simulation. Monte Carlo simulation is a simulation method for solving problems with a set of sampling techniques from a probabilistic process. The objective of this research is to determine the optimum number of service personnel by using the Monte Carlo simulation method. The results of this simulation are the optimum conditions (best) for the tax payment services problem at the Samsat "X" office. The result shows that the optimum conditions are obtained with an average waiting time = 22.5479 minutes, an average of service utility level = 81.23%, queue length = 3 persons, and the number of service personnel = 3 persons for annual tax payment services, while for five years tax payment services, the optimum condition for average waiting time = 42.85336 minutes, an average of service utility level = 91.38%, queue length = 5 persons, and the number of service personnel 2 persons.
Extraction of Tannin From Ketapang Leaves (Terminalia catappa Linn) Santi, Sintha Soraya; Irawati , Febriana; Prastica, Nita
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0530

Abstract

Ketapang tree (Terminalia Catappa Linn) is a wild plant that trees is not including trees cultivated. Ketapang tree (Terminalia Catappa Linn) spread to almost all regions in Southeast Asia, including in Indonesia except Sumatra and Kalimantan are somewhat rare in nature. Study of Extraction Tannins from Ketapang leaves (Terminalia Catappa Linn) is done to find a solvent extraction and concentration on the extraction of tannins from leaves ketapang (Terminalia Catappa Linn) using ethanol solvent. The extraction process is done in a laboratory-scale batch and by the principles of solid-liquid extraction in a three-neck flask stirred for the specified time, namely 30, 60, 90, 120, 150 (minutes) with the concentration of solvent (ethanol) 60%, 70%, 80%, 85%, 90% as variable variables. While the weight of the sample remains variable 10 grams, ± 200 mesh particle size, extraction temperature 85 ? C, stirring speed 200 rpm, ethanol solvent type, settling time ± 30 minutes, the solvent volume 250 ml, distilled water adjuvant. The best condition of the tannin extraction using 85% ethanol for 120 minutes obtained 98.97% yield tannin concentration.

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