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STUDI PENGHEMATAN ENERGI PADA UNIT KETEL UAP DI PABRIK GULA Rosyid, O A; w, Pudwo; F, diding
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 3 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

This paper presents an energy saving study result conducted in a sugar factory located in the East Java of Indonesia. Formerly, the sugar factory was designed to fulfil their energy demand by using an abundance free energy sources, called “baggase”. However, a fossil fuel consumption (i.e. residue) increased sharply to supply boilers due to the baggase availability was not sufficient. It impacted to the increasing of operational costs. Therefore, an energy saving study for the factory had been an interesting subject. The study proposed to assess boilers performance in the factory to reduce residue consumption. A detail energy audit method was conducted to identify the actual energy consumption, energy losses, and energy saving potential. The study results showed that energy saving potential for the boilers was about 11%. The main energy saving measures was to increase boilers efficiency from 64% to 75%. The study report also included with repairing recommendation for the boilers as well as its techno-economic analysis.

KAJIAN PENILAIAN RISIKO BENCANA KEMUNGKINAN JEBOLNYA TANGGUL WADUK PENJALIN, KABUPATEN BREBES, PROVINSI JAWA Naryanto, Heru Sri
Jurnal Sains dan Teknologi Indonesia Vol. 15 No. 1 (2013)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Waduk merupakan badan yang air memilki multifungsi dalam menyokong kehidupan penduduk serta turut menciptakan keseimbangan ekologi, tata air dan lingkungan. Waduk Penjalin yang terletak di Kabupaten Brebes, Provinsi Jawa Tengah, mempunyai luas 4,77 km2 dengan volume maksimum rata-rata tahunan sebesar 7.942.500 m3 dan volume rata-rata minimum tahunan 2.610.000 m3. Waduk Penjalin merupakan bendungan tipe urugan, dengan ketinggian dari lembah terdalam 16 meter, lebar puncak mercu 4 meter dan panjang puncak mercu 850 meter. Kondisi tanggul sudah mengalami beberapa kali renovasi. Di bagian perbatasan dengan tanggul Waduk Penjalin terdapat permukiman dan infrastruktur yang sangat padat, dan mempunyai risiko tinggi apabila tanggul tersebut tersebut jebol. Sesuai amanat UU No 24 tahun 2007, maka perlu dilakukan kajian risiko bencana terkait dengan jebolnya tanggul waduk tersebut secara lebih mendalam. Kajian mengenai risiko yang menyangkut perpaduan antara bahaya dan kerentanan terkait jebolnya tanggul waduk menjadi hal yang sangat penting. Parameter yang dipakai dalam analisis kerentanan adalah tataguna lahan (tanaman tahunan, tanaman musiman, sawah, permukiman, lahan kosong dan badan air). Data hasil penilaian risiko tersebut dapat digunakan sebagai dasar pertimbangan perencanaan tata ruang berbasis kebencanaan serta pengurangan risiko bencana. Zona genangan akibat jebolnya tanggul Waduk Penjalin mengarah ke timur. Berdasarkan pada hasil analisis tingkatan risiko bencana jebolnya tanggul Waduk Penjalin yang dilakukan melalui analisis spasial, dibagi menjadi risiko tinggi, risiko sedang, risiko rendah dan daerah aman

KAJIAN PENERAPAN MEKANISASI PERTANIAN DI LAHAN RAWA LEBAK DESA PUTAK - MUARA ENIM Djamhari, Sudaryanto
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 3 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The industrial and population growth in Java leads to converse the land function from the agriculture to industrial, estate and high way. Therefore, the development of agriculture must be relocated to outside Java, where there are a lot of land available. One agricultural of problems in outsideJava is the lack of labour especially for land cultivation and other which need many labour.The use of mechanical appliance. is the best alternative to overcome that problem. This research was assessed four aspects for applying of mechanical appliance in lebak bog farm. The objective of the research was to extend the use mechanical appliance to increase farm production, farmer income and tractor interpreneur income.

PENGKAJIAN KEKUATAN BETON STRUKTUR JEMBATAN PASCA KEBAKARAN sudarmadi, sudarmadi
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

In this paper a case study about concrete strength assessment of bridge structure experiencing fire is discussed. Assessment methods include activities of visual inspection, concrete testing by Hammer Test, Ultrasonic Pulse Velocity Test, and Core Test. Then, test results are compared with the requirement of RSNI T-12-2004. Test results show that surface concrete at the location of fire deteriorates so that its quality is decreased into the category of Very Poor with ultrasonic pulse velocity ranges between 1,14 – 1,74 km/s. From test results also it can be known that concrete compressive strength of inner part of bridge pier ranges about 267 – 274 kg/cm2 and concrete compressive strength of beam and plate experiencing fire directly is about 173 kg/cm2 and 159 kg/cm2. It can be concluded that surface concrete strength at the location of fire does not meet the requirement of RSNI T-12-2004. So, repair on surface concrete of pier, beam, and plate at the location of fire is required.

PEMANFAATAN HIDROLISAT PATI SAGU SEBAGAI SUMBER KARBON UNTUK MEMPRODUKSI BIOPLASTIK POLIHIDROKSI ALKANOAT (PHA) OLEH Ralstonia eutropha PADA SISTIM KULTIVASI FED BATCH Syamsu, K; Fauzi, A.M; hartoto, L; suryani, a; atifah, n
Jurnal Sains dan Teknologi Indonesia Vol. 9 No. 1 (2007)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The objective of this resarch has been to examine the utilization of hydrolysed sago starch as main substrate to produce PHA by Ralstonia eutropha using fed batch cultivation method. The results show that the hydrolysed sago starch can be used as carbon source for the production of PHA by Ralstonia eutropha. A higherformation and accumulation of PHA can be achieved through feeding of hydrolysed sago starch in a fedbatch cultivation method. The best treatment can increase the specific product yield up to 76.54% and product concentration up to 3.72 g/L.

PELEPASAN TINTA PADA KERTAS NCR (NO CARBON REQUIRED) BEKAS DAN KERTAS UANG MENGGUNAKAN XILANASE Trismilah, Trismilah
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 3 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Recycling paper is a solution to overcome the depletion of virgin pulp from trees and reduce the impact of global warming. Deinking paper is very important in the process of recycling paper. Xylanase application of research required for deinking outworn NCR paper and paper money. Deinking enzymatic is a clean technology and produces less waste than conventional deinking (chemicals). Xylanase AQ-1 which is a crude enzyme from Bacillus sp isolates AQ-1 can work well in the deinking process on the amount of enzyme addition of 0.2% in the pulp with the conditions of pH 7 and temperature of 50oC for 120 minutes. While the recombinant xylanase AQ-1 which is the result of genetic xylanase AQ-1 grown in E. coli can work well in the deinking process on the amount of enzyme addition of 0.1% in the pulp with the conditions of pH 7 and temperature of 50oC for 60 minutes. Xylanase AQ-1 increases the degree of whiteness of green NCR paper pulp from the control (40.1) into (53.9) and pulp paper moneyof the control (50.1) into (66.6). While AQ-1 recombinant xylanase increases the degree of whiteness of green NCR paper pulp from control ( 40.1) into (52.0) pulp and paper money from the control (50.1) into (63.4). Xylanase AQ-1 and recombinant xylanase AQ-1 potential in the green NCR paper deinking and paper deinking paper money, although the money still leaves some smudges on the results because of a special polymer coating that coats the waterproof paper money proficiency level.

KAJIAN PENILAIAN BAHAYA TANAH LONGSOR PROVINSI SUMATERA UTARA kurniawan, lilik
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Landslide assessment is the process by which decision-makers begin to bring order to the chaos that result from a disaster. Landslide hazard zonation helps in identifyingstrategic points and geographically critical areas prone to landslides. Landslide hazard zonation map was prepared by integrating the effect of various triggering factors. Conditions of geomorphology, hydrogeology, soil types and their distribution, and also current landuse are considered as supported data. Zonation mapin Sumatera Utara Province was divided into four zones of landslide : zone of very low susceptibility to landslide 16.164,76 km2, zone of low susceptibility to landslide 33.166,54 km2, zone of moderate susceptibility to landslide 20.120,47 km2, zone of high susceptibility to landslide 401,89 km2. Tapanuli Selatan region has widest zone of high susceptibility to landslide 8,3 km2.

PEMANFAATAN BAHAN TEKNIS KNO3, CaCl2, MgSO4, KH2PO4 SEBAGAI HARA MAKRO DAN Benzil Adenin DALAM PERBANYAKAN JATI (Tectona grandis L) SECARA IN VITRO karyanti, karyanti; royani, juwartina ida
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 3 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Indonesia is a major producer of teak after India and will gradually decrease if not followed by replanting. In general, teak plants propagated through seeds but have many disadvantages. Teak plant propagation using in vitro technique being an alternative to get the mass production of teak clones. In vitro technique, to some extent, needs a high cost particularly in using pure chemical substance. As an alternative solution, pure chemical substance can be substituted by using a few technique chemical substances such as KNO3, CaCl2, MgSO4, and KH2PO4. The aim of this research was to evaluated induction of shoot teaks, planted on different media with macro element substituted by different chemicals such as KNO3, CaCl2, MgSO4, and KH2PO4. The result showed that using the same concentration between 2 different chemical substances on teak shoot induction, there was no different shoot growing in teak propagated between 2 media.

KERAGAAN FENOTIPIK BEBERAPA KLON KENTANG G1 TAHAN PENYAKIT LAYU BAKTERI gunarto, anton
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 3 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The purpose of the research is to investigate the phenotypic performances as qualitative of three potato clones resulted from protoplasm fusion (A5) and two clones from seeds(PAS3063 and PAS3064) which had been identified to be resistant to bacterial wilt disease (Ralstonia solanacearum). The commercial potato varieties (Granola and Atlantic)were used as a comparison varieties. All five varieties were produced from mini tuber G0. The result of qualitative performance that more prominent were on A5 clonewith the characters that the branch was red, tuber skin was purple/violet and it could produce the bloom. Meanwhile, the branch of another clone was green, tuber skin wasyellow/brown, and it could not produce the bloom, except PAS3064 clone and Atlantic even though it was not much. The color of fruit flesh was white except on Granola whichwas yellow. The result of cluster analysis that based on the character from each plant showed that PAS3064 was closed to Atlantic variety characteristic, PAS3063 was closed to Granola variety, and A5 different from both commercial varieties.

Partisipasi Masyarakat Sebagai Upaya Untuk Mengurangi Risiko Bencana Tsunami Di Daerah Pantai Edyanto, CB Herman
Jurnal Sains dan Teknologi Indonesia Vol. 16 No. 3 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Indonesia is in a position 'ring of fire' (Ring of Fire), which means that the possibility of occurrence of disasters, particularly earthquakes is extremely high. Earth plate movements trigger earthquakes. When the epicenter was at sea, it can be expected to be a tsunami. Forecasting earthquakes can not be done, the tsunami itself occurs and is kept up preceded by an earthquake. A short time to escape, would create chaos on the location of the location where the high population concentration, thus requiring community participation in carrying out the evacuation. This study aims to introduce issues and acts as the tsunami disaster risk reduction. The participation of communities to disasters should be able to reduce the number of victims. The methodology of the discussion in this study conducted qualitatively by studying literature, which includes secondary data, observation, interviews and documentation. Results from this study are other steps undertaken in the tsunami disaster risk reduction.Indonesia berada pada posisi ÃŒÂ³cincin apiÃ¢â‚¬Ëœ (ring of fire), yang berarti bahwa tingkatkemungkinan kejadian bencana, khususnya gempa bumi adalah sangat tinggi. Gerakan lempeng bumi memicu gempa. Bila pusat gempa berada dilaut, maka dapat diduga akan terjadinya tsunami. Peramalan bencana gempa belum dapat dilakukan, tsunami itu sendiri terjadi dan selalui didahului dengan adanya gempa. Waktu yang begitu singkat untuk penyelamatan diri, akan menciptakan kekacauan pada lokasi lokasi dimana konsentrasi penduduknya tinggi, sehingga mengharuskan adanya partisipasi masyarakat dalam melaksanakan proses evakuasi. Studi ini bertujuan untuk memperkenalkan permasalahan tsunami dan tindakan sebagai upaya pengurangan risiko bencana. Adanya partisipasi masyarakat terhadap bencana diharapkan mampu untuk menekan jumlah korban. Metodologi pembahasan dalam studi ini dilakukan secara kualitatif dengan melakukan studi literatur, yang mencakup data sekunder, observasi, wawancara dan dokumentasi. Hasil dari studi ini adalah langkah-langkah lain yang dilakukan dalam pengurangan risiko bencana tsunami.Keywords: community participation, disaster risk reduction, tsunami.

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