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All Journal International Journal of Electrical and Computer Engineering Proceeding of the Electrical Engineering Computer Science and Informatics Science and Technology Indonesia Journal of Applied Geospatial Information Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Journal of Saintech Transfer Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Journal of Technomaterial Physics Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram

Tulus Ikhsan Nasution

Department Of Physics, Faculty Of Math And Science, Universitas Sumatera Utara, Medan, Indonesia

Author-ID : 328858

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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ALAT PENJERNIH AIR YANG DIINTEGRASIKAN DENGAN POMPA AIR TENAGA SURYA Susilawati; Nasution, Tulus Ikhsan; MN, Nasruddin
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 2 (2018): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Mesjid Sunnah Alhidayah dan Yayasan Al Mujahidah Sumatera Utara merupakan salah satu rumah ibadah dan sekolah yang terletak di kelurahan Sari Rejo Kecamatan Medan Polonia yang belum mendapatkan pasokan air bersih dari PDAM Tirtanadi. Masjid Sunnah Alhidayah dan sekolah yayasan Al Mujahidah menggunakan sumur bor untuk mendapatkan pasokan air yang digunakan untuk kebutuhan sehari hari. Masalahnya kondisi air yang diperoleh dari sumur bor berwarna kekuningan, keruh, dan berbau. Warna air sumur yang kekuningan, keruh dan berbau ini menjadi tak layak untuk digunakan apalagi untuk dikonsumsi, tetapi tetap saja warga menggunakan air sumur tersebut untuk keperluan ibadah (mandi dan berwudhu) tanpa melalui proses pengolahan atau penyaringan sama sekali. Implementasi ilmu pengetahuan teknologi di Mesjid Sunnah Alhidayah dan Yayasan Al Mujahidah yang akan dilakukan berupa teknologi alat penjernih air yang diintegrasikan dengan pompa air tenaga surya. alat penjernih air yang diintegrasikan dengan pompa air tenaga surya memiliki keunggulan tidak menggunakan bahan kimia karena hanya menggunakan filter berbasis karbon aktif, pasir zeolit, dan pasir manganese greensand, mengontrol air masuk dan air keluar secara otomatis, filter mudah dibersihkan, menggunakan tenaga surya sehingga ramah lingkungan dan menghemat biaya pembayaran listrik PLN. Implementasi ini dilakukan untuk mengatasi masalah yang sedang dihadapi oleh masyarakat di Kelurahan Sari Rejo umumnya dan mesjid Sunnah Alhidayah serta Yayasan Al Mujahidah khususnya dalam proses penjernihan air, sehingga air dari sumur bor menjadi layak untuk digunakan bahkan untuk dikonsumsi.

Improvement on Alcohol Breath-Analyzer Ethanol Biosensor based on Roselle-Chitosan Blend Ahmed M. S. Eljali; Irwana Nainggolan; Shahrir Hashim; Tulus Ikhsan Nasution
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 3: June 2017
Publisher : Institute of Advanced Engineering and Science

This paper presents a study on designing of a breath-analyzer ethanol biosensor through vaporization technology. A roselle extract and chitosan smart gel were used to fabricate the bio-sensing material. Sol-gel electrochemical deposition method was used to coat a thin film of the sensing material blend on patterned golden surface printed circuit board. Differentiation, response time and repeatability properties were studied by exposing 100ppm, 50ppm and 25ppm of ethanol vapor to the breath-analyzer. The accuracy of the breath-analyzer was tested by using I-V electrical testing. The analyzed data demonstrated that the breath-analyzer ethanol biosensor is capable of identifying the concentration of ethanol vapor at room temperature successfully, which can be used as analyzer of alcohol concentration when the sensor exposed to the exhale breath. The roselle-chitosan film sensors have shown the characteristic of a reliable sensor i.e. good sensitivity, selective, repeatable, able to recover and stable.

Electronic Identification System of Hazardous Volatile Organic Compound Gases using Roselle-Chitosan Blend Ahmed M.S. Eljali; Irwana Nainggolan; Tulus Ikhsan Nasution; Shahrir Hashim
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 2: EECSI 2015
Publisher : IAES Indonesia Section

This paper presents a study on design and fabrication of an electronic identification system (EIS) for some volatile organic compounds i.e. toluene, ethanol and methanol through vaporization technology. A new sensing material of roselle-chitosan blending thin film based on electrochemical deposition method was used to guarantee the differentiation and the accuracy of the identification system. Chitosan smart gel with 2% acetic acid was prepared and then roselle extract was blended to enhance the sensing properties of the chitosan film. Differentiation ability was studied by exposing 50ppm of toluene, ethanol and methanol vapor to the sensing material. The accuracy of the identification system was tested by IV electrical testing. The analyzed data demonstrated that the electronic identification system is capable of identifying different volatile organic compound gases at room temperature successfully. The roselle-chitosan film sensors showed the characteristic of a reliable sensor i.e. good sensitivity, selectivity, repeatability, recovery and stable.

PENGEMBANGAN UNIT PENGELOLAAN LIMBAH SISTEM MANAJEMEN LIMBAH (SIMALIM) DENGAN SMART URBAN FARMING DALAM MENGELOLA LIMBAH ORGANIK DI KAMPUS USU M. Ichwan; Ameilia Zuliyanti Siregar; Eri Yusni; Tulus Ikhsan Nasution
ABDIMAS UNWAHAS Vol 6, No 2 (2021)
Publisher : Universitas Wahid Hasyim Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/abd.v6i2.5686

Universitas Sumatera Utara memiliki civitas akademika yang berkontribusi menghasilkan limbah organik yang cukup signifikan. Mendukung Green Campus mencapai peringkat di UI Greenmetric, perlu dikembangkan Unit Pengelolaan Limbah Sistem Manajemen (Simalim) Dengan Smart Urban Farming yang baik dan terpadu. UPL Simalim dibentuk bertujuan sebagai wahana pendidikan. penelitian bagi masyarakat, mahasiswa dan dosen. Disamping itu, menghasilkan produk yang bermanfaat dengan mensinergikan pemanfaatan larva Hermetia illucens/Black Soldier Fly (BSF), ekoenzim, aquaponik dan smart urban farming dengan mengelola limbah organik dari kantin dan perumahan warga di sekitar USU. Pengabdian ini dilaksanakan sejak bulan Agustus 2020 sampai dengan Desember 2020 pada Tahap pertama, berlokasi di Tempat Pembuangan Sampah (TPS) USU di Jl. Tri Dharma dan roof top garden dari UPT Lab Terpadu USU, melibatkan secara partisipatif dan melatih para mahasiswa sebagai duta ecocampus dan juga tim UI Green metric USU. Pengelolaan sampah organik dilakukan dengan rearing BSF pada sampah yang akan diuraikan. Manakala sistem akuaponik, dibudidayakan ikan gabus, nila dan lele serta sayuran organik. Produk ini dapat dijadikan komoditas kampus yang merupakan income generating. Diharapkan UPL Simalim dapat menjadi model bagi pengelolaan sampah organik tepat guna di Perguruan Tinggi yang ada di Indonesia.Kata kunci: Limbah organik; larva BSF, ekoenzim, aquaponik, smart urban farming format.

Characteristics of Extreme Rainfall Events in North Sumatra Sahata Pakpahan; Tulus Ikhsan Nasution; Marzuki Sinambela
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 11, No 2: April 2023
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v11i2.7755

Extreme rain is an event that has an impact on various sectors of life. Therefore, this study aims to determine the spatial and temporal characteristics of extreme rain events in North Sumatra Province in the time period between 1991-2020. In accordance with the WMO recommended rain index, the frequency and intensity of rain were calculated using 50 rain stations spread across North Sumatra where the data had passed the quality control test for empty data. Spatial patterns were analyzed by mapping the climatological mean of the indices then for trend patterns were tested using the Mann-Kendal non-parametric test. The results showed that extreme rainfall events with low frequency and intensity occurred on the east coast while high frequency and intensity occurred in mountainous areas. Based on the temporal trend test, it shows that in general an insignificant trend dominates in this area. Significant and consistently increasing trends are only found at several points, namely in the districts of Deli Serdang (5 station), Batu Bara (1 station), Humbang Hasundutan (1 station), Langkat (2 station), Labuhan Batu Utara (1 station), Medan (1 station), Pematang Siantar (1 station) and Serdang Bedagai (1 station). Meanwhile, a significant and consistently decreasing trend was found in Asahan Regency (1 station), Simalungun (2 station), North Tapanuli (1 station), and North Labuhan Batu (1 station).

Analysis of Interaction Between Atmosphere and Sea Using The Delft3D Hydrodynamics Model for Mapping Coastal Flood Zone at Belawan Port and Coastal Rizki Fadhillah Pratama Putra; Tulus Ikhsan Nasution; Syahrul Humaidi; Yahya Darmawan
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 11, No 2: April 2023
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v11i2.7773

Belawan port and coastal areas were also not spared from the impact of the tidal flood. This study aims to determine the performance of the Delft3D hydrodynamic model in simulating sea level and waves in tidal floods at Belawan port and coastal area. Final operational global analysis data, MSLP data from NOAA/NCEP, and tidal data from ECMWF were used to run the Delft3D model. The model output was verified by using tide gauge observation data from BIG (Geospatial Information Agency). This research resulted in a mapping of areas affected by tidal flooding in the Belawan port and coastal area by analyzing the interaction between atmosphere, consisting of wind speed and direction parameters and sea parameters in the form of significant wave height. Based on the results of the Delft3D verification with observation data, the average error value is 23.5 cm and the coefficient of correlation is 0.93. This shows that the Delft3D model is quite good at simulating tidal flood heights in the Belawan port and coastal area. Based on atmospheric analysis, it does not really affect the increasing wave height. The influence is given by significant sea wave height, which can increase the height of tidal floods.

Analysis Of Spearman Rank Correlation & Linear Regression Of Atmospheric Stability And Cloud Tops Temperature Of Himawari-8 IR Satellite Images (Case Study Of Hail On May 22, 2022) Lestari Irene Purba; Syahrul Humaidi; Yahya Darmawan; Zahedi Zahedi; Tulus Ikhsan Nasution
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 11, No 2: April 2023
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v11i2.7818

This research is based on cases of hail that caused flooding in Binjai City on May 22, 2022. This study aims to see the correlation and regression of the Atmospheric Stability index value on cloud top temperature data from the Himawari-8 satellite imagery. So that the ERA-5 reanalysis data can be used to obtain cloud top temperatures in predicting hail events. The indices used in this study are CAPE, KI and TTI. The data used is located in Binjai City with correlation testing from 00UTC – 24UTC on May 22, 2022. Supported data is used in the form of sea surface temperature and wind conditions and looks at the causes of hail at the research location. The method used is Spearman's rank correlation with the results obtained in the form of a correlation value at the K index of -0.651, a correlation of the TT index of -0.563, and a correlation of the CAPE index of -0.348. The simple linear regression results also show a negative gradient line. This shows that the increase in the value of the stability index is in line with the decrease in cloud top temperature. So that the stability index data can be used as a benchmark in estimating cloud top temperatures in the case of convective cloud formation which causes hail.

Waste Processing as Organic Compost Fertilizer Using Smart Composter in Sei Ular Village, Secanggang District, Langkat Regency Sadeli, Achmad; Nasution, Tulus Ikhsan
Journal of Saintech Transfer Vol. 5 No. 1 (2022): Journal of Saintech Transfer
Publisher : Talenta Publisher Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jst.v5i1.8740

The activity was carried out in Sei Ular Village, Secanggang District, Langkat Regency from May - November 2021. The problems faced by partners are 1) The price of chemical fertilizers is relatively expensive and difficult to obtain. 2) Continuous use of chemical fertilizers destroys soil quality 3) There is a lot of unused agricultural and livestock waste. 4) People don't know what kind of waste can be used as compost. 5) People don't know how to process compost using smart composters. The purposes of implementing this activity are 1) The community can process agricultural and livestock waste into organic compost 2) The community can get fertilizer at a cheaper price and easily to obtained 3) Improve soil nutrients at the service location 4) to increase the income of the farmer. The results are in the form of training and mentoring services for making organic compost with the help of a smart composter. The approach method is carried out by overcoming partner problems and then resolving the problem through an activity program by referring to the science and technology approach. The results obtained after the implementation of counseling and training obtained that 85.71% of participants were interested in making compost by utilizing waste. The public feels organic compost fertilizer does not require too large a cost because it can utilize waste around the community.

Reducing Ammonia (NH3) Levels in Fish Cage Water Using Activated Carbon Adsorbent Derived from Purple Corn Cob Hamid, Muhammadin; Nasution, Tulus Ikhsan; Elfinita, Revi; Wijoyo, Hadi; Isnaeni, Isnaeni
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.669-681

Successfully made adsorbent of activated carbon made from purple corn cob which aims to minimize ammonia (NH3) levels found in water in fish farming with cage ponds. Activated carbon using carbonization method with a change in temperature that is between 550°C, 600°C, and 650°C and activation using Na2CO3 solution as activator. Activated carbon that has been obtained has exceeded the standard of SNI No.06-3730-1995, with characteristics including carbon yield ranging from 79.71% to 89.85%, moisture content ranging from 11.3% to 25.4%, volatile matter content ranging from 10.10% to 24.5%, ash content ranging from 9.7% to 9.9%, and fixed carbon content ranging from 65.7% to 79.7%. Then test results were obtained such as CO2 functional groups were found to enhance the adsorption process. Activated carbon displays the presence of a predominantly amorphous structure but also revealed a crystalline carbon structure. The highest peak was obtained at 29.7° with Miller index (201). The activated carbon displays the presence of pores on the scattered surface with carbon elements dominating. Adsorption mechanism to reduce ammonia (NH3) using activated carbon due to intermolecular interaction process. So that when testing the application for ammonia absorption, the best results were obtained in the sample with an adsorbent mass of 1.50 g at a carbonization temperature of 650°C with an adsorption capacity value of 546.34 mg/g and ammonia reduction of 82%. This research can open up opportunities for the potential development of new materials, especially for fish farming through cage techniques.

Design and Development of A Digital Soil Temperature Monitoring System Based on The Internet of Things at North Sumatra Climatological Station Manurung, Royston; Nasution, Tulus Ikhsan; Humaidi, Syahrul; Saragih, Immanuel Jhonson A.; Hibatullah, Khindi Aufa; Situmorang, Marhaposan; Darmawan, Yahya
Journal of Applied Geospatial Information Vol 7 No 2 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i2.6545

Soil temperature is a crucial parameter in monitoring and understanding climate and soil ecosystems. It plays a vital role in various environmental aspects, including agriculture, ecology, and geoscience. Monitoring soil temperature is necessary for planning and managing agriculture and natural resources. Currently, temporal observations of soil temperature by BMKG are limited, conducted only at 07:55, 13:55, and 18:55 local time. This limitation makes it difficult to perform detailed soil temperature analysis. This research was conducted to design a digital soil temperature monitoring device accessible via the internet. Seven DS18B20 sensors were used at depths of 0 cm, 2 cm, 5 cm, 10 cm, 20 cm, 50 cm, and 100 cm, combined with an ESP8266 module using the Arduino system. The implementation of this design resulted in a real-time soil temperature monitoring system with data updates every 10 seconds. The observed data are displayed on a 20x4 LCD and sent to the cloud, making them accessible on the webpage http://monitoringsuhutanah.my.id. Calibration results indicate that the DS18B20 sensors used in this study provide accurate and consistent temperature measurements, with an average correction range of (-0.20) to 0.24, thus suitable for operational use. Field tests show that the digital data are accurate and correspond (linearly correlate) with conventional data. This is based on a correlation value of 0.7, while the RMSE values range from 0.5 to 2.18 and the bias ranges from (-0.69) to 0.08.

Co-Authors Achmad Sadeli Ahmed M. S. Eljali Ahmed M. S. Eljali, Ahmed M. S. Ahmed M.S. Eljali Ameilia Zuliyanti Siregar Azdena, Dara Azhari Banurea, Rahmadhani Dewinta, Astrid Fauzia Elfinita, Revi Eljali, Ahmed M.S. Eri Yusni Hamid, Muhammadin Hashim, Shahrir Hasibuan, Azhari Hibatullah, Khindi Aufa Isnaeni Isnaeni Lestari Irene Purba Lukman Hakim M. Ichwan Manurung, Royston Marhaposan Situmorang, Marhaposan Marzuki Sinambela Nasruddin MN Nasution, Mahyudin K.M Noer, Zikri Novia Syafriani Lubis Piliang, M.Rifai Rizki Fadhillah Pratama Putra Sahata Pakpahan Saragih, Immanuel Jhonson A. Shahrir Hashim Shahrir Hashim Shahrir Hashim, Shahrir Sudiati Sujatmoko, Koko Susilawati Susilawati Susilawati - Syahrul Humaidi Syahrul Humaidi, Syahrul Syaipuddin Muda Pane Wijoyo, Hadi Yahya Darmawan Yahya Darmawan Yahya Darmawan Zahedi Zahedi

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