Judul: Analysis of Water Pollution Level in Domas Coastal Waters Based on Some Physical and Chemical Parameters
Abstrak: Wilayah pesisir di Teluk Banten diketahui mengalami pertumbuhan penduduk dan industri yang cukup tinggi, yang dapat berpengaruh bagi lingkungan perairan. Pantai Domas merupakan salah satu wilayah perairan yang terletak di bagian pesisir timur Teluk Banten. Penelitian ini bertujuan menentukan tingkat pencemaran perairan Pantai Domas, Teluk Banten berdasarkan beberapa parameter fisika dan kimia perairan. Penelitian ini dilaksanakan selama enam bulan, sejak bulan Agustus 2021 hingga bulan Januari 2022 pada enam stasiun pengamatan. Parameter kualitas air yang diamati pada penelitian ini adalah suhu, TSS, kekeruhan, kecerahan, kedalaman, pH, DO, salinitas, amonia, nitrit, nitrat, dan fosfat total. Nilai parameter kualitas air yang diperoleh dibandingkan dengan baku mutu air laut menurut PP No. 22 Tahun 2021. Status mutu air ditentukan dengan menggunakan Indeks Pencemaran dan Metode STORET yang mengacu pada Kepmen LH No. 115 Tahun 2003. Hasil analisis menunjukkan bahwa perairan Pantai Domas terindikasi tercemar sedang, baik berdasarkan Indeks Pencemaran (5,7-5,9) maupun Metode STORET (-14 hingga -24)., The coastal area of Banten Bay has a high population and industrial growth which can affect the aquatic environment. Domas Coastal Waters are one of the water areas located on the east coast of Banten Bay. This study aims to determine the water pollution level in Domas Coastal Waters, Banten Bay, based on some physical and chemical parameters. Sampling was carried out for six months, from August 2021 to January 2022 at six stations. The water quality parameters observed in this study were temperature, TSS, turbidity, transparency, depth, pH, DO, salinity, ammonia, nitrite, nitrate, and total phosphate. The water quality data was compared with water quality standards based on Indonesian Government Regulation No. 22 of 2021. Water quality status was determined using the Pollution Index (PI) and the STORET Method according to Decree of the Minister of the Environment No. 115 of 2003. The results show that Domas Coastal Waters are indicated to be moderately polluted, both based on the Pollution Index (5,7-5,9) and the STORET Method (-14 to -24).
Keyword: Domas, environment, water quality parameters

Judul: Water Pollution Index in Banten Bay Waters Based on Several Water Physical Parameters
Abstrak: Aktivitas antropogenik di sekitar kawasan perairan Teluk Banten dapat membawa limbah tercemar ke dalam perairan. Sehingga dapat memengaruhi kualitas perairan. Penelitian status mutu suatu perairan penting dilakukan untuk menduga kondisi pencemaran suatu perairan. Penelitian ini bertujuan menentukan tingkat pencemaran perairan Teluk Banten melalui pendekatan beberapa parameter fisika perairan. Data yang digunakan ialah data primer dan sekunder tahun 2019- 2022 dari enam lokasi penelitian. Parameter yang dianalisis antara lain suhu, kecerahan, kekeruhan, dan padatan tersuspensi (TSS). Hasil analisis yang diperoleh dibandingkan dengan baku mutu berdasarkan PP No 22 Tahun 2021. Berdasarkan hasil pengamatan suhu (25.1-39ᵒC), kecerahan (0.05-10 m), kekeruhan (0.24-380 NTU), TSS (0.4-742 mg/l), menunjukan bahwa sebagian parameter masih tergolong dibawah baku mutu beberapa parameter kurang sesuai dengan baku mutu perairan (antara lain suhu, kecerahan, kekeruhan, TSS). Berdasarkan hasil perhitungan indeks pencemaran perairan Teluk Banten memiliki indeks pencemaran kategori tercemar ringan (1.315-4.490)., Anthropogenic activities around the waters of Banten Bay can bring polluted waste into the waters. So that it can affect water quality. Research on the quality status of a waters is important to do to predict the pollution conditions of a waters. This study aims to determine the pollution level of Banten Bay waters through the approach of several water physics parameters. The data used are primary and secondary data for 2019-2022 from six research locations. Parameters analyzed included temperature, brightness, turbidity, and suspended solids (TSS). The results of the analysis obtained were compared with the quality standards based on PP No. 22 of 2021. Based on the results of observations of temperature (25.1-39ᵒC), brightness (0.05-10 m), turbidity (0.24-380 NTU), TSS (0.4-742 mg/l) , shows that some of the parameters are still below the quality standards, some parameters are not in accordance with the water quality standards (among others temperature, brightness, turbidity, TSS). Based on the results of the calculation of the water pollution index, Banten Bay has a pollution index of the lightly polluted category (1.315-4.490).
Keyword: baku mutu, indeks pencemaran, kualitas air, parameter fisika, teluk banten

Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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