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Android-Based Lecturer Workload Simulation Application

Journal of Physics: Conference Series 2020年第1期1430卷

作者： Wiwit Agus Triyanto Study Program of Information System Engineering Faculty Muria Kudus University Indonesia

In carrying out their duties, lecturers must conduct Tri dharma education activities which include teaching, research and service according to their respective fields of science. Every tri dharma activity carried out must be reported once every semester in the form of a lecturer workload *** number of activities contained in the rubric makes many lecturers experience confusion to calculate how the credit performance in the Tridharma activities carried out. Therefore, it is necessary to have a simulation application that helps the calculation of credit performance of Tridharma activities in accordance with the BKD rubric. The lecturer workload simulation application can help lecturers to calculate credits for the Tridharma activities that have been carried out. The lecturer workload simulation application can also provide information on what physical evidence needs to be prepared by the lecturer.

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Design Measuring Instrument Dust Based Internet of Things 3

Design Measuring Instrument Dust Based Internet of Things

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3rd Annual Applied Science and engineering Conference, AASEC 2018

作者： Syahrorini, S. Hadidjaja, D. Ahfas, A. Rahmansyah, A. Pramono, S.H. Study Program Electro Engineering Universitas Muhammadiyah Sidoarjo Jawa Timur Indonesia Faculty of Engineering Brawijaya University Jawa Timur Indonesia

Dust is one of the causes of decreased air quality, for it needs a remote-controlled dust gauge and bias store data measurement results. During this measuring device there is no data storage facility of measurement results, for the need for storage of data measurement results. Storage of measured data using internet of things displayed through PC. So no longer need to dating record to the measurement of dust, simply see the results of measurements through the PC, which can be seen bias measurements an minutes. In building this dust meter using NODEMCU, sensor type gp2y1010au0f sharp, step down, 16x2 LCD. Measurement of dust is done at campus area 2 at four point location that is canteen, entrance of campus 2, electro laboratory warehouse and front page of campus 2. Measurement of dust conducted on 22 and 23 March 2018 at 12:51-12:55, 13:13-13:17, 06:58-07:02, 07:43-07:47, 05:51-05:55, 06:01-06:07, 00:00-00:04, and 00:42-00:46. The result of measurement of dust at campus area 2 at the entrance of the parking at 13:13-13:17 dust concentration tends to rise from 0.1-0.3 when the students come home. The canteen area at 12:15-12:55 concentration of dust tends to rise, that is 0.08-0.1 mg/m3 when the student breaks college. © Published under licence by IOP Publishing Ltd.

关键词： Students

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Compression strength testing model on clay soil stabilization using variations of cement composition 3

Compression strength testing model on clay soil stabilizatio...

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3rd Annual Applied Science and engineering Conference, AASEC 2018

作者： Chairuddin, F. Evelyn Faculty of Engineering Atma Jaya University Makassar Indonesia Researcher of Civil Engineering Study Program Atma Jaya University Makassar Indonesia

The title of this study is «Compression Strength Testing Model on Clay Soil Stabilization Using Variations of Cement Composition». The focus of this test is the addition of different compositions of cement and clay. Composition of this test is 100% soil + 0% cement, 70% soil + 30% cement, 50% soil + 50% cement and 30% soil + 70% cement. The next stage of drying is done for 0 days, 5 days, 10 days, 15 days and 20 days. The test is performed by unconfined compression test machine for each sample dried within the time specified above. The cement used is Portland composite cement type (Portlant Cement Composite / PCC). The conclusion is obtained from the results of tests that have been done that the soil composition of 100% + 0% cement land indicates if the longer drained the value of the compressive strength will decrease. However, in the other composition 70% of soil + 30% cement, 50% soil + 50% cement and 30% soil + 70% cement show that the longer drying is done for each composition the relationship between strain and stress shows an increase along with the duration of drying done. However, if analyzed for the largest compressive strength value of this test was found in the 50% + 50% cement sample showing the largest compressive strength (qu) compared with the other samples. © Published under licence by IOP Publishing Ltd.

关键词： Compressive strength

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Failure Analyses on Corrosion of Hot Water Tank Storage Made from Stainless Steel

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IOP Conference Series: Materials Science and engineering 2020年第1期1007卷

作者： Tjokorda Gde Tirta Nindhia I Putu Widya Semara I Wayan Bandem Adnyana I Wayan Surata I Gusti Komang Dwijana Study Program of Mechanical engineering Engineering faculty Udayana University Jimbaran Bali Indonesia 80361 Graduate student Study Program of Master in Mechanical Engineering EngineeringFaculty Udayana University Bali Indonesia 80361

Hot water storage tank that was made from stainless still was investigated in this case. The tank was found failure in service due to corrosion in welded section. Corrosion also was found at the bottom part of the storage tank. The tank was used for no longer than one year but unfortunately severe corrosion was found. The purpose of this research is to find the reason why the tank easily corroded especially at the bottom part and at the welding section. The research was carried out by conducting metallographic examination directly in situ by utilizing portable metallographic microscope. It is found from investigation that the corrosion was happen due to galvanic corrosion. Investigation by using X ray fluorescence also agree that the composition of the bottom part of the tank was different with the wall, and upper section. The welding filler also was found not correctly prepared that make pitting corrosion to occur. It is suggested to conduct advance research to investigate the correct composition for the filler during welding.

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The effect of adding microalgae extract Spirulina platensis containing flavonoid in the formation of Sunscreen towards cream stability and SPF values

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AIP Conference Proceedings 2020年第1期2255卷

作者： Dianursanti M. B. Prakasa P. Nugroho 1Bioprocess Engineering Study Program Chemical Engineering Department Faculty of Engineering Universitas Indonesia Depok 16424 Indonesia

The use of sunscreen is a way to protect the skin from the danger of UV exposure. Nowadays, there are a lot of sunscreens based on chemical (synthetic organic) on the market, such as ovobenzone, oxybenzone, otisalate which have proved as toxic chemicals for the skin. The researches related to the use of natural ingredients as active agent for sunscreen are continuously increasing, one of them is the microalgae. Microalgae Spirulina plantesis is cyanobateria which has naturally absorbed UV compounds in its cells, namely flavonoid. Flavonoid has the potential to be used as active sunscreen's ingredient because of its ability to absorb maximum wavelength in the range of UV rays, as well as increase the SPF value. In this research, flavonoid is varied in the range of 1-10% w/w and the ratio of olive oil:candelilla wax were varied, which were 10:1 and 5:1 with the composition's range of wax is 35-40% w/w to obtain both optimal cream stability and SPF values from sunscreen cream preparations. The results show that the total flavonoid compound in the dried and fresh basis sample of microalgae were 22.10 mg/g extract and 10.91 mg/g extract respectively. The best composition of sunscreen on this research was sunscreen with 7% (w/w) microalgae extract and the ratio between olive oil : candelilla wax was 35:7, because this formulation gives good SPF value (29.06) which is categorized as ultra-SPF and has the good stability score (17.33 from 20). Therefore, the sunscreen from microalgae extract which contains flavonoid are safe to use, because the total microbes were still below the required total microbial of SNI and did not irritate the skin.

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Influence of Transglutaminase Enzyme Incorporated into Protein based Edible Coating for Preservation of Spanish Mackerel Fish (Scomberomorus commersoni)

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IOP Conference Series: Materials Science and engineering 2020年第1期722卷

作者： S Karina Setiadi Bioprocess Engineering Study Program Department of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok 16424 West Java Indonesia

Transglutaminases have been utilized in food technology to modify protein to improve rheological properties of food material or product. Edible coating is viscous solution that contains polymer structures, forming thin layer that covers surface of food material. Edible coating maintains quality of food product by becoming a barrier and protecting the surface from spoilage from internal and external causes. In this study, several concentration of transglutaminase enzymes were applied, acting as cross-linking agent into protein-based coating solution for coverage of Spanish mackerel fish meat. The fish meat samples were stored inside fridge with temperature of 10°C. Quality of fish meat was assessed each 5 days during 15 days of storage. The assessment of quality includes water content, pH and total volatile base of nitrogen (TVBN). Fourier Transform Infra-Red (FT-IR) was used to identify the activity of transglutaminase enzyme by the changes of detected functional group. Addition of transglutaminase has improved barrier properties of edible coating that maintained water content of fish meat better than control sample, but the by-product of enzymatic reaction has decreased quality of fish meat according to pH and TVBN results. FTIR spectroscopy showed changes in the secondary structure of protein (amide II).

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Performance evaluation and sludge estimation of Legong water treatment plant in Depok city, Indonesia

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AIP Conference Proceedings 2020年第1期2230卷

作者： Djoko M. Hartono Nurannisa Shaleha Nyoman Suwartha Sandyanto Adityosulindro Environmental Engineering Study Program Department of Civil Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok 16424 Indonesia

The rapid growth of population, industrialization, and other activities increased with increase drinking water demands. Depok City, one of the most developing cities in West Java, require more drinking water to meet the needs of increased population. The purpose of this study is to evaluate the performance of the Legong Water Treatment at Plant by calculating and comparing the design parameters and criteria of each unit operation and processes. The research method used includes primary and secondary data collection such as field observation, measurements of unit dimensions, water quality sampling, interview, etc. The result of performance evaluation was: (i) effluent water quality analysis of surrogate parameters showed compliance upon regulation; (ii) Evaluation of each unit operation and processes vis-à-vis its design criteria indicated that flocculation and settling unit were not meet design criteria. (iii) Capacity of Legong WTP could be increased from 190 L/s up to 250 L/s; (iv) evaluation of sludge generation estimated 1763 kg/d of sludge was directly rejected to Ciliwung River without treatment.

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Sustainable Community-Based Disaster Management (CBDM) in Wonolelo Village, Bantul Regency, Special Region of Yogyakarta, Indonesia

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IOP Conference Series: Earth and Environmental Science 2021年第1期764卷

作者： Widyasari Her Nugrahandika Ramadhani Nuresa Putri Urban and Regional Planning Study Program Architecture and Planning Department Engineering Faculty Universitas Gadjah Mada 2 Grafika Street Sleman Regency Special Region of Yogyakarta Indonesia

Special Region of Yogyakarta is passed by the ring of fire and become a province which prone to disasters, especially earthquake. In 2006, Wonolelo Village was one of the villages hardest hit by the earthquake. Therefore, understanding and awareness of disaster management are important. Currently, disaster management at local is widely applied. According to Van Niekerk, et al (2017), the approach at the local level aims to change the perspective of disaster management in terms of issues, challenges and problems faced by the community. For this reason, Wonolelo Village has a disaster-aware community, the Disaster Risk Reduction Forum (FPRB). The purposes of this research are to identify the processes and factors that influence the success of sustainable CBDM in Wonolelo Village. The method used is qualitative. Based on the analysis, Wonolelo Village has three stages of the disaster management process, namely the identification, the planning and implementation stage, and the development stage. While the factors that influence the success of disaster management in Wonolelo Village are the choice of Wonolelo Village as a Pilot Project by NDMA, recurring disaster events, volunteers who have team awareness, the existence of cooperation culture in the community, and budget allocation from Wonolelo Government for CBDM.

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Cyber-Physical Systems-Based PID Controller for Three Interacting Tank Process Level Control

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IOP Conference Series: Materials Science and engineering 2021年第1期1096卷

作者： E Joelianto V Nadhira H Hammami Hariyadi Instrumentation and Control Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung 40132 Indonesia Engineering Physics Study Program Faculty of Industrial Technology Institut Teknologi Bandung Bandung 40132 Indonesia

This paper considers the performance improvement of PLC-based process control systems through Industry 4.0 by harnessing cyber-physical systems (CPS), which is an integration of control, computation, and networking to intertwine intensely cyber and physical components. To accomplish these needs, open process control (OPC) unified architecture (UA) is exercised as a horizontal and vertical integrator of the CPS-based process automation. The three interacting tank process is the preferred testing plant because this system has become a proven benchmark for testing advanced control system in the laboratory scale. In this paper, the cyber component accomplishes parameter optimization of the PID controller for the level control of the three interacting tank process and schedules the appropriate PID controller that matches the level operating conditions. The control implementation shows that CPS for the level control of the three interacting tank process works well by resulting in smaller integral square error (ISE) value. Moreover, the cloud-based database can be established directly using OPC UA for real-time monitoring of the process through websites using the Internet network with data delivery rate of 100%.

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Optimization of short message media in the Arduino and Bluetooth-based blank spot areas

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IOP Conference Series: Materials Science and engineering 2021年第4期1098卷

作者： I Sulistiyowati F A Hanif M Nasar M P T Sulistyanto M Ahsan Faculty of Science and Technology University of Muhammadiyah Sidoarjo Sidoarjo Indonesia Electrical Engineering University of Muhammadiyah Malang Malang Indonesia Informatics Study Program Faculty of Science and Technology Universitas Kanjuruhan Malang Malang Indonesia

Communication is important in human life because communication can bridge all forms of ideas to be conveyed by someone. And the communication media commonly used today are via mobile phones, which can be via SMS messages, WhatsApp, or telephone. The problem is, in some areas the absence of signals or blank spots is a problem for those who rely on communication via mobile phones. For this reason, it is necessary to optimize the short message media in the Arduino and Bluetooth-based blank spot areas. Here the main goal is to make it easier for humans to communicate via mobile phones even in difficult conditions and without a data packet or WIFI signal. The tools used are android, the Lo-Ra module as a long-distance wireless transmission technology platform that can reach distances of 10km, and then also use the Arduino Pro Mini as a microcontroller board and Bluetooth terminal that functions to transmit data from android to Arduino and then forward it to Lo Ra. From the test results, it was found that this tool works well in the blank spot area or difficult to signal, without the need for data packages or WIFI we can still communicate well through the short message media on the cell phone. From the test results, it was found that this tool works well in the blank spot area or difficult to signal, without the need for data packages or WIFI we can still communicate well through the short message media on the cell phone. So, with the invention of this tool, we can still communicate through the medium of short messages even though we are in the blank spot area, and even when we do not have a data package or WIFI.

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