Jurnal Sains dan Teknologi

Pengujian Sifat Kimia dan Fisika Airtanah

Bodian Davin Panggabean — 2024-11-04

Masyarakat di jayapura memanfaatkan airtanah untuk keperluan sehari-hari baik yang didapatkan dari mata air, sumur gali dan sumur bor. Penelitian dilakukan di daerah Kotaraja, Ayapo dan Aimbe. Tujuan dari penelitian ini adalah untuk mengetahui sifat kimia dan fisika airtanah berdasarkan uji laboratorium. Sifat kimia dan fisika airtanah merupakan salah satu sifat utama air dan sangat berguna untuk penentuan kualitas airtanah. Penelitian ini mengambil tiga lokasi dengan metode pengambilan sampel dilakukan secara stratified random sampling. Sampel yang diambil adalah mata air dan sumur bor. Parameter sifat kimia airtanah yang di uji antara lain Kalsium (Ca), Magnesium (Mg), Sodium (Na), Potassium (K), Bikarbonat (HCO₃). Klorida (Cl), Sulfat (SO₄), pH, TDS, dan Hardness, sedangkan parameter sifat fisik airtanah yang di uji antara lain warna, bau, rasa, dan temperatur (T⁰C). Secara umum dari seluruh sampel yang dianalisis dari daerah penelitian menunjukkan jumlah kadar unsur-unsur kimia dalam airtanah belum melampaui batas standar air minum, tetapi terdapat lokasi yang memiliki kadar Hardness CaCO₃ yang tinggi yaitu pada lokasi Ka.01 (Kaliacai) sebesar 343 mg/L dan lokasi Ay.02 (Ayapo) pH 9,32. Hasil pengujian sifat fisika menunjukkan nilai kadar uji juga belum melampaui batas standar air minum, dalam arti airtanah di daerah penelitian layak untuk dipergunakan.

Rancangan Aplikasi Penjualan Berbasis Web Dengan Metode Prototype

Naufal Farid — 2024-11-28

The rapid development of information and communication technology has encouraged companies to switch to digital platforms in managing their sales. One of the most widely used solutions is a web-based sales application, which allows buying and selling transactions to be carried out online, improving operational efficiency, and expanding market reach. In this study, a web-based sales application was designed using a prototype methodology. This methodology was chosen because of its ability to actively involve users in the development process, through an iterative cycle that allows for direct feedback from users to improve and improve the system gradually. The first step in this design is to collect needs from users or stakeholders through interviews and observations. Based on these needs, an initial prototype of the application was built that included key features such as product management, shopping cart, and payment processing. The prototype is then evaluated by the user, and the feedback is used to refine and refine the prototype until the final application is ready for further development. The resulting app has a full range of features that include product management, a secure checkout system, payment method integration, and real-time sales reporting. The prototype methodology allows developers to detect and resolve potential issues from the early stages of development, thereby minimizing the risk of errors in complex feature implementations. Additionally, the active participation of users in the development process ensures that the resulting application is more in line with the needs and expectations of users. The results of this study show that a prototype-based approach can improve the effectiveness and quality of web-based sales applications, as well as maximize user satisfaction. This application is expected to help companies manage sales transactions more efficiently and expand business reach through digital platforms.

Analisis Kebutuhan Air Bersih Dusun Waya Udara Kecamatan Tehoru Kabupaten Maluku Tengah

Juned Habel — 2024-11-30

The need for clean water increases every year, this is due to an uncontrolled increase in population growth so that the population is directly proportional to water needs. The problem of increasing water availability and demand due to the impact of uncontrolled population growth is also felt in Waya Udara Hamlet, Tehoru District, Central Maluku Regency. The reservoir clean water distribution network system was built to meet the clean water needs of the people of Waya Udara Hamlet at that time, but with the population growth that increased the need for clean water, so residents looked for other ways to meet clean water needs This research uses a type of quantative research with a descriptive method that aims to find facts that actually occur in the field. In this study, the study population was all heads of families in Waya Udara Hamlet, Tehoru District, Central Maluku Regency. The number of households in the village is 90 households. Analysis and Assessment of Community Satisfaction Level with Clean Water Service Distribution Service quality is one of the techniques for measuring the level of satisfaction. The results of the analysis of the level of satisfaction with the clean water service of Waya Udara Hamlet through the results of questionnaires for satisfaction, from the aspects of taste, color, smell, taste and turbidity are very satisfying. From the aspect of needs, water discharge, water tariffs are also very satisfied with the average satisfaction with needs and availability as well as tariffs and water discharge because of the results of the analysis of availability and needs. for the analysis of the availability and need for clean water of Waya Udara Hamlet in 2023 is 47.79 m3 / day for the needs of a population of 354 people and for the projection of the next 10 years in 2033 with a population of 496 people requires water as much as 66.9 m3 / day based on the discharge availability at the source is 4.97 liters / second with 1 hour filling the reservoir bath is 17.89 m3 / hour with the filling time for the reservoir for 100 m3 / day is 5.89 hours / m3 / tub. From the results of the analysis, it can be seen that the availability is greater than the need for projections for the next 10 years and from the results of the analysis on SPSS-22 the level of satisfaction with the use of clean water in the Waya Udara Hamlet Community is satisfactory because the availability and need for water are met.