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: Pengenalan kata berbasiskan fonem dengan pemodelan resilient backpropagation
Abstrak: The aim of this research is to know the performance of Neural Network as a model for word recognition. The research uses Resilient Backpropagation for modeling and Mel-Frequency Cepstral Coefficient (MFCC) for feature extraction. The voice data used comes from one speaker. Total words used are 70 words that consist of 50 words as a dictionary of words and 20 words, that each word repeated 10 times. Dictionary words consist of 50 words from a combination of phonemes used in the research. Phonemes used in this research are 10 phonemes consist of 4 vowels and 6 consonants phonemes. From the 20 words, each word is repeated 10 times, 7 times used as training data and 3 times are used as test data. The output from testing process are word transcription. The convertion process from the word transcription into word is done manually by 5 person. This research produces two models. Average accuracy obtained from model with 100 hidden neuron is 75% for test data and 61% for the dictionary of words. The best average accuracy obtained is 93% for test data and 62 % for the dictionary of words generated by testing the model with 1000 hidden neurons. Overfitting occurs in the second model with 1000 hidden neurons. It causes the model can only produce good output for data that has been trained.
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