Directory of Scientific Journals Indonesian Society of Applied Science (ISAS)
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Distribusi Kebutuhan Air Bersih Untuk Pasien COVID-19 Melalui Simulasi Epanet di RSUD Genteng Banyuwangi
Get PDFRegional general hospital of genteng is a public health service, due to the increase in Covid-19 patients in 2020, the function of Class 1 and Isolation Building was carried out. The capacity of the two buildings is 92 people, it is necessary to ensure that water distribution is met. This study aims to simulate the distribution of clean water in Class 1 and Isolation Building of Genteng Hospital using Epanet 2.0. Determination of the number of users of Class 1 and Isolation Building using Least Square and Geometric projection methods for 9 months. Then a water distribution simulation was carried out using the Epanet 2.0 program. Simulation of 100% service water distribution resulted in a discharge requirement of 0.347 l/s in Class 1 Building with 3/4“ pipe diameter, with an average velocity of 0.55 m/s, an average headloss unit of 32.52 m/km. Simulation of water distribution for the 100% service isolation building requires a discharge of 0.406 l/s with an average velocity of 0.50 m/s, an average headloss unit of 24.84 m/km. Adding 90 users, then the service becomes 125% adding 1 bathroom unit on the 2nd floor, it takes a water discharge of 0.623 l/s, with an average velocity of 0.73 m/s, an average headloss unit of 51.02 m/km.RSUD Genteng merupakan pelayanan kesehatan masyarakat, dikarenakan meningkatnya pasien Covid-19 di tahun 2020, maka dilakukannya peralihan fungsi Gedung Kelas 1 dan Isolasi. Kapasitas kedua gedung 92 jiwa, perlu dipastikan distribusi air terpenuhi. Penelitian ini bertujuan untuk mensimulasi distribusi air bersih pada bangunan Gedung Kelas 1 dan Isolasi RSUD Genteng menggunakan Epanet 2.0. Penentuan jumlah pengguna Gedung Kelas 1 dan Isolasi menggunakan metode proyeksi Least Square dan Geometrik selama 9 bulan. Kemudian dilakukan simulasi distribusi air menggunakan program Epanet 2.0. Simulasi distribusi air pelayanan 100% dihasilkan kebutuhan debit 0,347 l/s pada Gedung Kelas 1 berdiameter pipa 3/4", dengan velocity rata-rata 0,55 m/s, unit headloss rata-rata 32,52 m/km. Simulasi distribusi air Gedung Isolasi pelayanan 100% dibutuhkan debit 0,406 l/s dengan velocity rata-rata 0,50 m/s, unit headloss rata-rata 24,84 m/km. Penambahan pengguna 90 jiwa, maka pelayanan menjadi 125% menambahan 1 unit kamar mandi dilantai 2, dibutuhkan debit air sebesar 0,623 l/s, dengan velocity rata-rata 0,73 m/s, unit headloss rata-rata 51,02 m/km
Simulation Model for Rainfall Intensity to Landslide Susceptibility : (Case Study in Kota Wisata Batu, East Java)
Get PDFLandslides are one of the most hazardous natural disasters because their occurrences are often destructive to natural and artificial structures on earth and reduce, the quality of the surrounding environment. Predicting the susceptibility of an area to landslides is essential for reducing losses in terms of property, human lives, and environmental damages. Kota Wisata Batu (KWB) is one of areas which having a highest landslide potential in East Java, Indonesia, recording data mentioned that there are 109 landslides in 2022 caused by highest rainfall intensity of 502 mm with a number of intensities of 2977mm per year. Study purposed to identify the factors contributing to landslide occurrences using a geodetic measurement method. The study uses geographic information system (GIS) and PRISMA software analyses to examine and/ or evaluate the relationship between rainfall intensity and landslide susceptibility. The study results the generation of rainfall patterns and maps highlighting sensitivity areas to landslides. These visual representations the classification area as a high-risk and susceptibility zone to landslides at Kota Wisata Batu, East Java. January to April, and August to November should have pay attention since these months is reflection of monsoonal climate with the hard rain in a few days without the raining pause. Some places which are required to pay attention, such as: Gunungsari, Tulungrejo, and Songgokerto.Tanah longsor merupakan salah satu bencana alam yang paling berbahaya karena kejadiannya seringkali merusak struktur alam dan buatan di muka bumi, serta menurunkan kualitas lingkungan sekitar. Prediksi kerentanan suatu daerah terhadap tanah longsor sangat penting untuk mengurangi kerugian baik harta benda, nyawa manusia, dan kerusakan lingkungan. Kota Wisata Batu (KWB) merupakan salah satu daerah yang memiliki potensi longsor tertinggi di Jawa Timur, Indonesia, data rekaman menyebutkan terdapat 109 kejadian longsor pada tahun 2022 yang disebabkan oleh intensitas curah hujan tertinggi sebesar 502 mm dengan jumlah intensitas curah hujan sebesar 2977 mm per tahun. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor curah hujan yang berkontribusi terhadap kejadian tanah longsor dengan menggunakan suatu metode pengukuran geodesi. Kajian ini menggunakan analisis-analisis dengan sistem informasi geografis (GIS) dan software PRISMA untuk mengkaji dan mengevaluasi hubungan antara intensitas curah hujan dan/ atau kerentanan tanah longsor. Studi ini menghasilkan pola curah hujan dan peta yang menyoroti daerah sensitif terhadap tanah longsor. Visual tersebut menggambarkan wilayah klasifikasi sebagai zona risiko tinggi dan kerentanan terhadap bencana tanah longsor Kota Wisata Batu, Jawa Timur. Bulan Januari hingga April, dan Agustus hingga November patut mendapat perhatian karena bulan-bulan ini merupakan cerminan iklim muson dengan curah hujan yang deras dalam beberapa hari tanpa jeda. Beberapa tempat yang wajib diwaspadai seperti: Gunungsari, Tulungrejo, dan Songgokerto
Analisis Pemanenan Air Hujan Dengan Memanfaatkan Atap Dalam Memenuhi Kebutuhan Air Bersih
Get PDFThe need for water is increasing due to the increasing human population while water sources. This can result in a lack of clean water for humans themselves. Optimizing the use of water and water catchment areas needs to be done to preserve water. Location in the settlement area of Padak Hamlet, Labuan Sumbawa Village, Sumbawa Subdistrict, Sumbawa Regency. The area is located in a coastal area which has a very high probability of soil quality so that sea water is very easy to enter until the well water tastes salty. The use of PDAM water also experiences water difficulties in terms of flowing because there are several places where the elevation tends to be higher so that PDAM water is very difficult to push, so the community decided not to use PDAM water since the last seven years, so by collecting rainwater it is expected to meet the needs of clean water. The purpose of the research is to find out how much rainwater harvesting potential through roof media and find out how much water needs for household scale with random sampling method and calculate the roof area, as well as the average of rainfall from 2914-2023. It resulted in a total roof area of 3118,365 m2 with an average rainfall of 12,900 mm/year. The average rainfall with a 99% chance of occurring was 15.99 mm/month, the average water availability was 235.824 m3/month, with an average water demand of 125 m3/month.Kebutuhan akan air semakin meningkat karena populasi manusia yang terus bertambah sementara sumber air semakin berkurang. Hal ini dapat mengakibatkan kurangnya air bersih bagi manusia itu sendiri. Optimalisasi penggunaan air dan daerah resapan air perlu dilakukan untuk menjaga kelestarian air. Lokasi di daerah pemukiman Dusun Padak, Desa Labuan Sumbawa, Kecamatan Sumbawa, Kabupaten Sumbawa. Daerah tersebut berada di daerah pesisir pantai yang memiliki kemungkinan kualitas tanah yang sangat tinggi sehingga air laut sangat mudah masuk hingga air sumur terasa asin. Penggunaan air PDAM juga mengalami kesulitan air dalam hal pengaliran karena ada beberapa tempat yang elevasinya cenderung lebih tinggi sehingga air PDAM sangat sulit untuk di dorong, sehingga masyarakat memutuskan untuk tidak menggunakan air PDAM sejak tujuh tahun terakhir, sehingga dengan menampung air hujan diharapkan dapat memenuhi kebutuhan air bersih. Tujuan dari penelitian ini adalah untuk mengetahui seberapa besar potensi pemanenan air hujan melalui media atap dan mengetahui seberapa besar kebutuhan air untuk skala rumah tangga dengan metode random sampling dan menghitung luas atap, serta rata-rata curah hujan dari tahun 2914-2023. Hasilnya didapatkan total luas atap sebesar 3118.365 m2 dengan curah hujan rata-rata 12.900 mm/tahun. Curah hujan rata-rata dengan peluang 99% adalah 15,99 mm/bulan, ketersediaan air rata-rata 235,824 m3/bulan, dengan kebutuhan air rata-rata 125 m3/bulan
Perhitungan Pajak Penghasilan Pasal 21 ( PPh Pasal 21) Atas Gaji Pegawai Tetap Pada Balai Pelatihan Dan Penyuluhan Perikanan (BPPP) Ambon
No full textThe aim of this research is to calculate Income Tax Article 21 on the salaries of permanent employees of the Ambon Fisheries Training and Extension Center for employees of class II, class III, and class IV for the 2023 tax year following Minister of Finance Regulation Number 40/PMK.03/2017 concerning Reporting Procedures and Calculation of Income Tax Article 21 on Employee Income from Employers with Certain Criteria.The research uses quantitative methods with secondary data in the form of salary data for permanent employees of the Ambon Fisheries Training and Extension Center for class II, class III, and class IV employees in December 2023. After calculating PPh Article 21 tax on the salaries of permanent employees of the Training and Extension Center Ambon Fisheries (BPPP) where the author calculates the salaries of employees from each group. namely class II, class III, and class IV employees. The results of the research show that group II employees, in this case PTKP as taxpayers, are greater than the total annual net income, so the PPh is nil or not subject to deductions from PPh Article 21 on salaries, group III, in this case as taxpayers, is greater than the amount annual net income, then group III tax is nil or is not subject to deductions from PPh Article 21 on salary. and employees of class IV PPh article 21 whose monthly deduction is IDR 55,180.4
Keywords: income tax article 21, permanent employees
Analisis Kinerja Keuangan Pemerintah Daerah Kabupaten Maluku Tengah
Get PDFThis research aims to measure the financial performance of the Regional Government of Central Maluku Regency based on the Value For Money concept, namely from an economic, efficiency, and effectiveness perspective. The type of research used in this research is case study research with a quantitative descriptive approach. The data used is the Regional Revenue and Expenditure Budget Realization Report of the Regional Government of Central Maluku Regency for 2016 to 2020. Data was obtained from the Regional Financial and Asset Management Agency of Central Maluku Regency. The data analysis technique in this research uses the concept of value for money with economic ratios, efficiency, and effectiveness. The results of this research show that the financial performance of the Regional Government of Central Maluku Regency based on the Value for Money ratio is quite good. The economic ratio in 2016 was 93.09% which is included in the economic category. From 2017 to 2019 the economic ratio decreased to 89.29%; 89.90% and 86.62% are in the quite economical category. In 2020, the economic ratio increased by 91.06% and was within economic criteria. Meanwhile, for the performance efficiency ratio, in 2016 the performance efficiency ratio was 93.29% and was in the less efficient category. During 2017 to 2020 this ratio fluctuated, namely 85.48%; 82.29%; 80.70%, and 86.51%, and are included in the criteria of being quite efficient. The financial performance effectiveness ratio from 2016 to 2020 is included in the effective criteria where the ratio is 95.84%; 92.84%; 95.47%; 95.20% and 96.62%.
Keywords: financial performance, value for mone
Inovasi Beton Ramah Lingkungan Dengan Pemanfaatan Limbah Kaca dan Plastik PET
Get PDFNowadays, the use items made from glass and plastic has increased, causing accumulation. One of them is Bakung landfill in Bandar Lampung which accommodates 1,000 tons per day. Accumulating glass and plastic waste has caused various environmental problems. This research was carried out as form of technological innovation and effort to preserve environment due to this waste. The research purpose is finding environmentally friendly concrete formula by substituting glass waste and PET plastic but have characteristics that comply with SNI standards. Each material that makes up the concrete is tested for its characteristics so that normal concrete mix design can be carried out. Glass waste and PET plastic are substituted at 10%, 15%, and 25% into coarse and fine aggregate formulations in normal concrete formula, thereby creating variations in test specimen. The concrete sample has made in cube with dimensions of 15 x 15 x 15 cm. Concrete compressive strength tests were carried out at 7, 14, 21 and 28 days. Compressive results strength test showed that variations in substitute materials in concrete have effect on resulting compressive strength. Concrete test results with 10% and 15% substitution have compressive strength values that was close to each other and higher than 25% substitution. Even though the two compositions have close compressive strength values, they have different standard deviations. The standard deviation values for 10% and 15% substitution have 35.9913 and 23.1299. So, concrete with 15% substitution composition was the most optimal composition because it showed most dominant advantage among others.Dewasa ini penggunaan barang-barang yang berbahan kaca dan plastik mengakibatkan penumpukan limbah. Salah satunya TPA Bakung di Bandar Lampung yang menampung 1.000 ton per hari. Limbah kaca dan plastik yang menumpuk telah menyebabkan timbulnya berbagai masalah lingkungan. Penelitian ini dilakukan sebagai bentuk inovasi teknologi dan upaya menjaga kelestarian lingkungan akibat adanya limbah tersebut. Penelitian ditujukan untuk menemukan formula beton ramah lingkungan dengan subtitusi limbah kaca dan plastik PET namun tetap memiliki karakteristik yang sesuai dengan standar SNI. Setiap material penyusun beton diuji karakteristiknya sehingga kemudian dapat dilakukan mix design beton normal. Limbah kaca dan plastik PET disubstitusikan sebanyak 10%, 15%, dan 25% ke dalam formulasi agregat kasar dan halus pada formula beton normal sehingga tercipta variasi formula benda uji. Sampel beton dibuat berbentuk kubus dengan ukuran 15 x 15 x 15 cm. Pengujian kuat tekan beton dilakukan pada umur 7, 14, 21, dan 28 hari. Hasil pengujian kuat tekan menunjukkan bahwa variasi kandungan bahan substitusi pada beton berpengaruh terhadap nilai kuat tekan yang dihasilkan. Hasil uji kuat tekan beton dengan substitusi 10% dan 15% memiliki nilai kuat tekan yang berdekatan dan lebih tinggi dari substitusi 25%. Meskipun kedua komposisi tersebut memiliki nilai kuat tekan yang berdekatan tetapi memiliki perbedaan standar deviasi. Nilai standar deviasi substitusi 10% dan 15% adalah 35,9913 dan 23,1299. Sehingga beton dengan komposisi substitusi 15% adalah komposisi paling optimum karena menunjukkan keunggulan paling dominan diantara yang lainnya
Studi Perbandingan Komposit dari Fiberglass dan Serat Ijuk untuk Body pada Kontes Mobil Hemat Energi
Get PDFComposite is a new engineering material whose main constituent consists of two or more materials. The combination of these materials will obtain better mechanical properties. Apart from that, making composites also has a relatively cheaper price when compared to other materials, especially metal materials. In this research, we created and carried out a comparative analysis of composites between fiberglass (woven roving) and palm fiber which were applied to the prototype body of the Energy Saving Car Contest. The composite manufacturing process in this research uses matrix material (resin), catalyst, fiberglass and palm fiber using the hand lay up method. The variations used in making composites are variations in the number of layers for fiberglass fiber (2 and 3 layers), and palm fiber using 2 and 3 layers with vertical, horizontal and random fiber directions. The results obtained for tensile strength testing obtained the highest value, namely 109.1 MPa (3 layers of woven roofing). Meanwhile, the highest bending test value was obtained at 4.52 MPa (3 layers of woven roofing). In testing composites based on the fiber direction, the highest tensile strength and bending values were obtained for specimens with 3 layers of random fiber direction, namely 11.1 and 1.18 MPa.Komposit merupakan material rekayasa baru yang mana penyusun utamanya terdiri dari dua atau lebih material. Kombinasi material tersebut akan mendapatkan sifat mekanis yang lebih baik. Selain itu, pembuatan komposit juga memiliki harga yang relatif lebih murah jika dibandingkan dengan material lain terutama material logam. Pada penelitian ini, kami membuat dan melakukan analisis perbandingan komposit antara fiberglass (woven roving) dan serat ijuk yang diaplikasikan pada prototipe body Kontes Mobil Hemat Energi (KMHE). Proses pembuatan komposit pada penelitian ini menggunakan material matriks (resin), katalis, fiberglass dan serat ijuk dengan metode hand lay up. Adapun variasi yang digunakan dalam pembuatan komposit yaitu variasi jumlah lapisan untuk serat fiberglass (2 dan 3 lapis), dan serat ijuk menggunakan 2 dan 3 lapis dengan arah serat vertikal, horizontal dan acak. Hasil yang diperoleh untuk pengujian tensile strength didapatkan nilai paling tinggi yaitu 109,1 MPa (3 lapis woven rofing). Sementara, nilai pengujian bending paling tinggi diperoleh sebesar 4,52 MPa (3 lapis woven rofing). Pada pengujian komposit berdasarkan arah serat ijuk, nilai tensile strength dan bending tertinggi diperoleh pada spesimen dengan arah serat acak 3 lapis yaitu sebesar 11,1 dan 1,18 MPa
Identifikasi Kelayakan Air Minum Dengan Metode Analisis Komponen Utama Berbasis Entropi
Get PDFThe need for clean water is a fundamental requirement that must be met by humans, as water constitutes 60 to 70% of the total human body weight. Therefore, it is important to be able to determine the quality of the water entering the body, as consuming unsafe water will bring various diseases, such as diarrhea, and in severe cases might lead to death. This study aimed to investigate the factors which determine the potability of drinking water. Specifically, this research aims to produce a fault detection algorithm that can detect the potability of water samples based on Principal Component Analysis (PCA) and entropy-based subset selection methods. This paper addresses the linearity problem that commonly occurred in PCA by finding a subset of data that has a good entropy relation among the parameters contained in the subset, thus maintaining linearity in the data. There were 8 parameters considered in this reseach: pH, hardness, total dissolved solids, chloramines, sulfate, conductivity, organics carbon, trihalomethanes and turbidity. The experiment was conducted with 811 water samples, where 645 samples were used to train the model and the rest for validating the model predictive accuracy. Based on experiments conducted, it is confirmed that the proposed algorithm can determine the potability of drinking water samples from synthetic data sourced from India with an accuracy of over 98% for potable water data and 100% for non-potable water data
Implementasi Keamanan Ruangan Berbasis IoT dengan Sensor PIR, Telegram, dan Peringatan Suara
Get PDFHome security is crucial for protecting property and occupant safety. Conventional technology often falls short in providing optimal protection. With advancements in the Internet of Things (IoT), smarter and more affordable security solutions are now accessible. This research develops an IoT-based room security system using a PIR sensor to detect motion, Telegram notifications for real-time communication, and sound alerts as preventive measures. The NodeMCU ESP8266 module processes data from the PIR sensor and transmits signals via WiFi. Test results show that the PIR sensor successfully detects motion up to 5 meters with a 93.33% success rate. The system also effectively sends real-time notifications to the Telegram app and provides efficient sound alerts. Thus, this system significantly enhances home security with minimal cost and complexity, offering convenience and quick response to users
Analisis Persebaran Panas Pada Mesin Oven Pengering Kerupuk Dengan Burner Sederhana Berbasis Computational Fluid Dynamics
Get PDFThe main problems in drying crackers are non-uniform drying and drying that still uses solar energy. During the rainy season, the process of drying crackers cannot be done quickly or takes a long time, thereby reducing the amount of cracker production in cracker MSMEs. Therefore, the solution that can be used is to use simple technology, a cracker drying oven machine, which can help the productivity of cracker small businesses in the drying process when the rainy season arrives. This research aims to determine the heat distribution in the cracker drying oven box using Computational Fluid Dynamics, determine the optimal temperature for drying crackers using a cracker drying oven machine and find out how long it takes to dry crackers using a cracker drying oven machine. From the simulation results using Ansys Fluent 19.2 software, it was found that the heat distribution was almost even in the drying box on each shelf with a heating source inlet of 75 ˚C with a temperature range of 49 ˚C - 54 ˚C on each shelf in stages. From the direct experimental results, it was found that the drying process with a heating source of 75 ˚C resulted in a decrease in the weight of crackers from the initial unit weight of 6 grams and the final unit weight of crackers of 3 grams. The drying process with a cracker drying oven machine lasts for 3 hours to achieve complete drying.
Keywords: Cracker drying oven machine, heat distribution, computational fluid dynamicsPermasalahan utama dalam pengeringan kerupuk adalah pengeringan yang tidak seragam serta pengeringan yang masih menggunakan tenaga panas matahari. Pada musim penghujan proses pengeringan kerupuk tidak bisa dilakukan secara cepat atau berlangsung lama sehingga mengurangi jumlah produksi kerupuk pada UMKM kerupuk. Maka dari itu solusi yang bisa digunakan yaitu menggunakan teknologi secara sederhana mesin oven pengering kerupuk yang dapat membantu produktivitas umkm kerupuk dalam proses pengeringan disaat musim penghujan tiba. Penelitian ini bertujuan mengetahui sebaran panas di dalam box oven pengering kerupuk dengan Computaional Fluid Dynamics, mengetahui temperatur optimal untuk mengeringkan kerupuk dengan mesin oven pengering kerupuk dan mengetahui berapa lama waktu yang dibutuhkan untuk mengeringkan kerupuk menggunakan mesin oven pengering kerupuk. Dari hasil simulasi menggunakan software ansys fluent 19.2 didapat persebaran panas hampir merata di dalam box pengering setiap rak dengan inlet sumber pemanas 75 ˚C dengan rentang suhu 49 ˚C - 54 ˚C di setiap rak secara bertingkat. Dari hasil percobaan langsung didapat proses pengeringan dengan sumber pemanas 75 ˚C menghasilkan penurunan berat kerupuk dari berat satuan awal sebesar 6 gr dan berat satuan akhir kerupuk sebesar 3 gr. Proses pengeringan dengan mesin oven pengering kerupuk berlangsung selama 3 jam untuk mencapai kering dengan sempurna.
Kata kunci: Mesin oven pengering kerupuk, persebaran panas, computational fluid dynami