Judul: Heavy Metal (Hg, Cd, Pb and Cu) in Long Whiskered catfish Mystus gulio (Hamilton, 1822) in Bojonegara Waters
Abstrak: Aktivitas antropogenik seperti industri, domestik dan pelayaran merupakan penyumbang utama masuknya logam berat di perairan Bojonegara dan sekitarnya. Penelitian ini dilaksanakan pada bulan Agustus hingga Oktober 2020 di perairan Bojonegara, Teluk Banten. Penelitian ini bertujuan untuk menentukan tingkat akumulasi logam berat (Hg, Cd, Pb dan Cu) yang terkandung dalam daging ikan lundu Mystus gulio (Hamilton, 1822) di perairan Bojonegara, Teluk Banten. Lokasi penelitian ditentukan menggunakan teknik purposive sampling. Konsentrasi logam berat Hg, Cd, Pb, Cu pada daging ikan lundu berturut-turut <0,001 mg kg-1 (Hg), <0,005 mg kg-1 (Cd), <0,030 mg kg-1 (Pb) dan 0,699-10,920 mg kg-1 (Cu), nilai tersebut berada di bawah baku mutu menurut PerBPOM RI (2018) dan SK Departemen Kesehatan RI tahun 1989. Akumulasi Cu>Pb>Cd>Hg terjadi pada daging ikan lundu ukuran kecil maupun besar. Bioakumulasi ikan lundu yang ditangkap di perairan Bojonegara, Teluk Banten tergolong dalam akumulasi sedang hingga tinggi untuk logam berat Cu. Bioakumulasi logam berat Hg, Cd, dan Pb termasuk ke dalam kategori akumulasi rendah., Anthropogenic activities such as industrial, domestic, and shipping are the main contributors to the entry of heavy metals into the Banten Bay and the surrounding areas. This research was conducted from August to October 2020 in the coastal waters of Bojonegara, Banten Bay. This study aim to estimate the accumulation of heavy metals (Hg, Cd, Pb and, Cu) contained in long whiskered catfish Mystus gulio (Hamilton, 1822) in the Bojonegara coastal waters. The research location was determined using a purposive sampling technique. Based on the analysis, the heavy metal content in the fish meat were <0,001 mg kg-1 (Hg), <0,005 mg kg-1 (Cd), <0,030 mg kg-1 (Pb) and 0,699-10,920 mg kg-1 (Cu); the values were less than BPOM (2018) and Regulation of the Minister of Health Republic of Indonesia 382/1989 standard. The accumulation of Cu>Pb>Cd>Hg occurred in the small and large fish. The fish caught in Bojonegara Coastal Waters of Banten Bay have moderate to high accumulation levels of Copper (Cu). The accumulation level of Hg, Cd, Pb is included in the low category.
Keyword: accumulation of heavy metals, Banten Bay, heavy metals, Mystus gulio

Judul: Kandungan Logam Berat (Hg, Cd, Pb, dan Cu) pada Ikan Belanak Planiliza subviridis (Valenciennes, 1836) di Perairan Bojonegara, Teluk Banten
Abstrak: Keberadaan logam berat di perairan yang berlebih dapat mencemari lingkungan perairan serta organisme di dalamnya. Ikan belanak Planiliza subviridis (Valenciennes, 1836) dikenal sebagai ikan konsumsi. Penelitian ini bertujuan untuk menganalisis akumulasi logam berat (Hg, Cd, Pb, dan Cu) dalam daging ikan belanak di perairan Bojonegara, Teluk Banten. Penelitian dilakukan pada Agustus-Oktober 2020 dan Maret-April 2021. Analisis data terdiri atas analisis deskriptif dan kuantitatif. Hasil penelitian menunjukkan kandungan logam berat Hg, Cd, Pb, dan Cu berada di bawah baku mutu. Ikan belanak mengalami tingkat akumulasi sedang. Kondisi perairan Bojonegara masih dapat ditolerir dan masih layak untuk kehidupan ikan belanak. Ikan belanak di Teluk Banten masih aman untuk dikonsumsi dalam jumlah yang wajar., High presence of heavy metals in the waters can pollute the aquatic environment and the organisms. The greenback mullet Planiliza subviridis (Valenciennes, 1836) is known as consumption fish. This study aims to analyze the accumulation of heavy metals (Hg, Cd, Pb, and Cu) contained in the flesh of greenback mullet at Bojonegara Waters, Banten Bay. The research was conducted in August-October 2020 and March-April 2021. Data analysis consisted of descriptive and quantitative analysis. The results showed the heavy metal content (Hg, Cd, Pb, and Cu) was below the quality standard. The greenback mullets have experienced moderate accumulation rate. The condition of the waters of Bojonegara can still be tolerated and is still suitable for the life of mullet. The greenback mullet is still safe for consumption in a reasonable amount.
Keyword: Accumulation, Bojonegara, Heavy Metals, The Greenback Mullet

Judul: Simulasi Protokol Autentikasi Pelanggan pada Voice Privacy
Abstrak: Existing design of the telephone public network is susceptible to eavesdropping on its voice stream. Consequently, any wire taper can listen to supposedly private conversation. In order to prevent such eavesdropping, we propose a protocols and its implementation for end-to-end voice privacy authenticate as a service available for interested subscribers. Our protocols consist of customer enrollment system, customer authentication system and simulation voice privacy. Protocols that we made are adaptation from Sharif and Wijekesera journal with the title Providing Voice Privacy as a Service over the Public Telephone Network. The result of the process shows how the customer enrolls and how the system process the password, how the system authenticate customer simulate voice privacy.
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