15 research outputs found

    PENGENDALI MOTOR AC UNTUK STARTING GENSET JARAK JAUH MENGGUNAKAN MODEM WAVECOM M1306B BERBASIS MIKROKONTROLER ATMEGA8535

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    Tidak dapat dipungkiri lagi di zaman sekarang ini kebutuhan tenaga listrik dan telekomunikasi telah menjadi kebutuhan utama bagi manusia. Hampir dari semua pekerjaan memerlukan tenaga listrik, terutama dalam hal telekomunikasi. Untuk tetap mampu memenuhi kebutuhan sumber informasi dan tenaga listrik ketika terjadi pemadaman catu daya utama (PLN) maka dibutuhkan suplai cadangan listrik, dan pada kondisi tersebut Genset (Generator-Set) diharapkan dapat mensuplai tenaga listrik. Hadirnya alat komunikasi yang sekarang ini semakincanggih, yang mampu melakukan komunikasi dimanapun mereka berada tanpa dibatasi ruang dan rentang panjang kabel bisa menjadi solusi bagi kebutuhan untuk pengendali Genset jarak jauh berbasis mikrokontroler Atmega8535. Dengan adanya pengendali Genset jarak jauh berbasismikrokontroler Atmega8535 diharapkan dapat membantu meringankan tugas teknisi agar mudah untuk mengontrol Genset dari jarak jauh dan dapat menghemat waktu dan biaya apabila teknisi ingin melakukan pemanasan pada Genset. Alat ini akan mengontrol Genset via SMS menggunakan modem Wavecom M1306B, apabila ada perintah yang diberikan lewat SMS maka rangkaian pengendali akan melaksanakan sesuai perintah apakah itu perintah untuk menghidupkan atau mematikan. Jika tidakterjadi eror maka Genset akan hidup ketika dapat perintah untuk menghidupkan dan sebaliknya akan mati ketika dapat perintah untuk mematikan.Keywords: modem, Genset, Atmega8535, SM

    KASUS DISTRIBUSI DAN PENGGUNAAN FORMALIN DALAM PENGAWETAN KOMODITI IKAN LAUT SEGAR (STUDI KASUS DI KOTA BANDAR LAMPUNG) [Formaldehyde Distribution and Using for Preserving Fresh Fish (A Case Study in Bandar Lampung City)]

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    The purpose of this study was to identify the presence of formaldehyde in some fresh fish commodities and to trace formaldehyde distribution in Bandar Lampung City. The  formadelhyde tests were done  on the storage water of fresh fish samples. The study conducted in July to October 2013 was devided in two stages: a survey to fill out a questionnaire to a number of respondents, followed by sampling some storage water of fresh fish to be tested in the laboratory.  The tests were  carried out on 52 sampling points taken from the fishing boats in the fishing landing port (17 boats), fish supplier car from outside Bandar Lampung (6 cars) as well as som

    EVALUASI MUTU DAN ANALISIS USAHA SUSU KEDELAI (Glicine max L. Merr) KEMASAN PLASTIK DI BANDAR LAMPUNG

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    The purposes of this study were to determine the quality diversity of plastic- packed  soy milk sold in Bandar Lampung, and business analysis of production of soy milk plastic package.  The data of soy milk quality were collected from 8 vendors and 6 producers which determined using purposive sampling method.  The data were tested using ANOVA and continued tested using Duncan multiple range test.  The business analysis were discussed descriptively.  The results showed that the quality of soy milk packed in a plastic bag sold by different vendors were significantly different. The  protein contents ranged from 0,78 – 2,58% w/w; pH  6,32 – 6,78; total solid 10,10 – 15,98% w/w, and total microbial content  5,07 – 5,70 log CFU/ml. The colors ranging from yellowish white – brownish white; the overall acceptance ranged from neutral –like; taste ranged from less sweet – sweet, and  the flavor of soy milk samples were not different which was  described as  as slightly unpleasant.  The business analysis of soy milk packed in a plastic bag which had  NPV = Rp 40.079.472,73; B/C = 1,38; IRR = 485,72%; Pb = 0,21; BEP of fix cost = 711,74; and Production of BEP = 114, showed that the businesses are profitable and proper to be developed (NPV > 0, B/C ratio > 1, IRR > discount factor 11.00%, payback period BEP of fix cost, and total production > production of BEP). Keywords : business analysis, milk, quality evaluation, soybea
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