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All Journal Jurnal Reka Lingkungan Desimal: Jurnal Matematika Sunan Kalijaga Journal of Physics
Andini, Dita
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Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Perencanaan Unit Pengolahan Air Bersih di Kecamatan Sumedang Selatan Andini, Dita
Jurnal Reka Lingkungan Vol 5, No 2 (2017)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.862 KB) | DOI: 10.26760/rekalingkungan.v5i2.%p

Abstract

ABSTRAK Pasokan air minum berkualitas di Kecamatan Sumedang Selatan hingga saat ini masih kurang. Hal ini berbanding terbalik dengan semakin meningkatnya pertumbuhan penduduk pertahunnya. Sehingga perlu adanya pemenuhan air minum baik kualitas maupun kuantitasnya. Pemenuhan kualitas yang dimaksud dilakukan dengan membangun unit pengolahan air minum yang baru dengan periode perencanaan selama 20 tahun (2015–2035). Sedangkan pemenuhan kuantitas yaitu dengan memanfaatkan dua sumber yang dapat digunakan yaitu Mata Air Ciguling (40 Lt/det) sebagai sumber eksisting dan Sungai Citekin (195,97 Lt/det) sebagai sumber perencanaan. Dari hasil proyeksi, jumlah penduduk pada tahun 2035 sebanyak 117.758 penduduk, dengan kebutuhan maksimum per hari 177,11 Lt/det. Debit yang akan diolah pada perencanaan ini sebanyak 137,11 Lt/det dari Sungai Citekin karena adanya pengurangan dari Qmin 40 Lt/det di Mata Air Ciguling. Kualitas air Sungai Citekin terdapat 5 parameter yang melebihi standar baku mutu yaitu Total Suspended Solid (TSS), kekeruhan, besi, mangan dan fecal coli. Hasil analisis ditentukan unit pengolahan pada alternatif 1 dengan menggunakan metode Weight Rating Technique (WRT) yaitu intake, koagulasi, flokulasi dengan dosis PAC 40 mg/lt, sedimentasi, filtrasi dan desinfeksi dengan RAB yang diperlukan sebesar Rp 4.500.000.000. Kata kunci: proyeksi penduduk, proyeksi kebutuhan air, desain unit pengolahan
Seismic Disaster Study Based on Soil Vulnerability Index (Kg) and Peak Ground Acceleration (PGA) Values in Kokap and Surrounding Areas: Studi Kebencanaan Seismik Berdasarkan Nilai Indeks Kerentanan Tanah (Kg) dan Perecepatan Tanah Maksimum (PGA) di Daerah Kokap dan Sekitarnya Andini, Dita; Nurhaci, Dian Susri
Sunan Kalijaga Journal of Physics Vol. 6 No. 1 (2024): Sunan Kalijaga Journal of Physics
Publisher : Prodi Fisika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/physics.v6i1.5154

Abstract

Kulon Progo region is one of the areas in Yogyakarta that often experiences natural disasters, especially landslides. With the morphology of mountains that are described as large domes with flat tops and steep wings (Van Bamelen, 1949), making the Kulon Progo area more prone to landslides. Earthquakes with great force can cause landslides in this area. To map areas that are prone to earthquakes and landslides, research using the microseismic method was used. The research is located in Hargorejo Village and Hargowilis Village, Kokap District and Karangsari Village, Pengasih District, DI. Yogyakarta consists of 9 measurement points. Data processing was performed using Geopsy software using the HVSR method. The results showed that the Kokap area and its surroundings had an amplification factor value range of 1-5 times, the natural frequency value was 1.2 Hz to 12.2 Hz, the dominant period value was 0.5-0.8 s, the soil vulnerability index value was , 1 /cm to 2.7 /cm and a PGA value of 64 cm/  to 206.2 cm/ . Based on the research results, the area most vulnerable to the consequences of the earthquake is the village of Hargorejo. The village of Hargorejo which is composed of andesite intrusion has resulted in mineral alteration which produces clay minerals where clay minerals are impermeable so that they easily become sliding fields. When an earthquake occurs, this area will suffer significant damage.
Media Animasi Menggunakan Macromedia Flash Berbasis Pemahaman Konsep Pokok Bahasan Persegi dan Persegi Panjang Andini, Dita; Supriadi, Nanang
Desimal: Jurnal Matematika Vol. 1 No. 2 (2018): Desimal : Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v1i2.2278

Abstract

This study aims to develop animation media using Macromedia flash based on the conceptual understanding of the subject of rectangle and rectangle. The research and development method used is 4D model proposed by Thiagarajan consisting of 4 stages, namely: (1) define; (2) design; (3) develop and (4) disseminate. Researchers use data collection techniques is a questionnaire in the form of Likert scale for the response of learners. The result of the research is the animation media using Macromedia flash based on the concept of the subject of rectangular and rectangle that is suitable for learning media. The feasibility of learning media obtained from the validation of material experts with an average score of 3.40 is categorized valid and validation of media experts with an average score of 3.32 are categorized as valid. Student response to learning media obtained in small group test is very interesting with an average score of 3.64. In the large group, test obtained criteria attractiveness is very interesting with an average score of 3.47.
Co-Authors Nanang Supriadi Nurhaci, Dian Susri