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PENGOLAHAN DATA PENGUKURAN RADIOAKTIVITAS ALPHA DI UDARA INSTALASI NUKLIR Sukesi, Endang; Prayitno, Budi; Suliyanto, Suliyanto
PIN Pengelolaan Instalasi Nuklir No 8 (2011): Oktober 2011
Publisher : PIN Pengelolaan Instalasi Nuklir

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PENGOLAHAN DATA PENGUKURAN RADIOAKTIVITAS ALPHA DI UDARA INSTALASI NUKLIR. Pengolahan data pengukuran radioaktivitas alpha (α) di udara instalasi nuklir, telah dilakukan. Tujuan dari penulisan ini untuk mengetahui sumbangan dari ralat pengukuran radioaktivitas α di udara di inslatasi nuklir secara tidak langsung. Contoh pengukuran radioaktivitas α dilakukan di Instalasi Radiometalurgi (IRM) ruang 143 dengan cara menghisap partikulat di udara melalui bantuan air sampler yang dilengkapi kertas filter. Pengambilan cuplikan udara dilakukan pada ketinggian ± 150 cm dari permukaan lantai. Tangkapan partikulat pada kertas filter di cacah aktivitasnya dengan alat cacah SAC-4 yang dilengkapi dengan detektor α. Data hasil cacahan diolah dan dihitung  radioaktivitas α, sedangkan ketelitian pengukuran dihitung dengan memperhitungan ralat pengukuran, yaitu hasil pencacahan, volume udara yang dihisap dan efisiensi detektor. Hasil pengukuran radioaktivitas α di udara ruang 143 IRM secara tidak langsung sebesar  dengan ketelitian pengukuran sebesar 52,51 %. Ketelitian pengukuran tersebut berasal dari sumbangan ralat pencacahan sebesar 98,74 %, ralat volume udara yang dihisap sebesar 1,24 % dan ralat efisiensi detektor sebesar 0,02 %. Oleh karena itu pengukuran radioaktivitas α di udara instalasi nuklir sebaiknya dilakukan secara langsung, karena radioaktif berumur pendek akan ikut terdeteksi. Dapat disimpulkan bahwa pengukuran radioaktivitas di udara instalasi nuklir hanya dilakukan untuk tujuan pengukuran keselamatan.   Kata kunci : Pengolahan data, pengukuran, radioaktivitas α, udara, ralat pengukuran.
EVALUASI KESIAPSIAGAAN NUKLIR DI INSTALASI RADIOMETALURGI BERDASARKAN PERKA BAPETEN NOMOR 1 TAHUN 2010 Prayitno, Budi; Suliyanto, Suliyanto
PIN Pengelolaan Instalasi Nuklir No 7 (2011): April 2011
Publisher : PIN Pengelolaan Instalasi Nuklir

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EVALUASI KESIAPSIAGAN NUKLIR DI INSTALASI RADIUOMETALURGI BERDASARKAN PERKA BAPETEN NOMOR 1 TAHUN 2010. Telah dilakukan evaluasi kesiapsiagan nuklir Instalasi Radiometalurgi (IRM) berdasarkan Perka BAPETEN nomor 1 tahun 2010. Perka BAPETEN nomor 1 tahun 2010 pasal 50 menyatakan bahwa pada saat peraturan ini mulai berlaku, maka Keputusan Kepala BAPETEN No. 05-P/Ka-BAPETEN/I-03 dicabut dan dinyatakan tidak berlaku. Panduan kesiapsiagaan nuklir PTBN sat ini mengacu pada Keputusan Kepala BAPETEN No. 05-P/Ka-BAPETEN/I-03, sehingga tidak dapat diberlakukan lagi. Tujuan evaluasi kesiapsiagaan nuklir IRM adalah untuk mengetahui kesiapan seluruh unsur infrastruktur dan kemampuan fungsi penanggulangan kedaruratan nuklir. Metoda evaluasi kesiapsiagan nuklir IRM dilakukan dengan menggunakan diagram alir. Infrastruktur IRM yang terdiri dari: organisasi PKN; koordinasi penanggulangan; fasilitas dan peralatan; prosedur penanggulangan; serta pelatihan kedaruratan nuklir telah terpenuhi. Fungsi penanggulangan yang terdiri dari: identifikasi, pelaporan dan pengaktifan; tindakan mitigasi; serta tindakan perlindungan untuk petugas penanggulangan dan pekerja untuk tujuan penanggulangan mempunyai kemampuan yang memadai. Kesimpulan yang dapat diambil dari hasil evaluasi kesiapsiagaan nuklir IRM berdasarkan Perka BAPETEN nomor 1 tahun 2010, diketahui bahwa unsur infrastruktur telah terpenuhi, dan fungsi penanggulangan kedaruratan nuklir mempunyai kemampuan yang memadai. Program kesiapsiagan nuklir IRM dapat segera direvisi, sehingga memuat unsur infrastruktur dan fungsi penanggulangan serta dapat digunakan sebagai pengganti Panduan kesiapsiagaan nuklir PTBN yang lama/sebelumnya.   Kata kunci: evaluasi, fungsi penanggulangan, unsur infrastruktur.
EFFECT OF USING GUILLARD AND WALNE TECHNICAL CULTURE MEDIA ON GROWTH AND FATTY ACID PROFILES OF MICROALGAE Skeletonema sp. IN MASS CULTURE Endar, Vivi; Sarjito, .; Hutabarat, Johannes; Prayitno, Budi
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Live food, especially microalgae Skelotenoma sp. is a key success factor in shrimp aquaculture. To that end, the provision of Skeletonema sp. mass with a high nutrient content is needed. Nutritional quality of microalgae depends on the culture media used. The purpose of this study was to investigate effect of the use of different technical culture medium (Walne and Guillard) on the growth, protein content and fatty acid profile in microalgae culture Skelotenoma sp. Skeletonema sp. obtained from the Laboratory of Natural Feed BBPBAP Jepara. Culture method used was a mass with two different media (modified Walne and technical Guillard), with 12 replications. Data analysis were analyzed by using T test, while the protein content analysis was performed by Kjedahl method.The fatty acids were determined by using in situ transesterification. The results showed that the growth of Skeletonema sp. was markedly different between media Walne and technical Guillard. Guillard medium revealed lag phase after 44 hours (observation to 6) with a cell density of 48.00 x 104 cells/ml, then entered the exponential phase at 48. (Observation to 7) with a cell density of 70.25 x 104 cells / ml, while the stationary phase occurred in after hours to 52 (observation to 8) with a cell density of 86.75 x 104 cells / ml and death phase began at the 56 ( observations to 9) with a cell density of 54.58 x 104 cells / ml. Growth of Skeletonema sp. cultured with culture medium technical Walne showed a similar pattern in the lag phase to 44 hours of observation (observation to 6 with the cell density is 117.17 x 104sel/ml, exponential phase and stationary phase were detected from hour to 48 (observation to 7) with a cell density is 160.83 x 104 cells / ml. Later phases of death from an hour to 52 (observation to 8) with a cell density of 122.25 x 104 cells / ml. then long culvation or Skeletonema sp stationary phase in Guillard media over a period of 4 hours than Walne medium. Total fatty acids of Skeletonema sp. cultured in Guillard medium resulted in higher yields.
MORFOLOGI KOTA SOLO (TAHUN 1500-2000) Prayitno, Budi; Qomarun, Qomarun
DIMENSI (Jurnal Teknik Arsitektur) Vol 35, No 1 (2007): JULY 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

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The purpose of this study is to explore the transformation of city form and its structure in Solo which has developed from time to time. The method of this research was carried out by a-three-archive research strategy as follows: primary files; secondary files and physical files. The primary files referred to the old Javanese documentary (examples: parintah, undhang-undhang, pranatan, piyagem, kakancingan, serat, gugat, penget, babad). The secondary files referred to the document of local, national and international historians (examples: Ricklefs, Lombard, Vorstensteden, Muljana, Notosusanto, Kartodirdjo, Sajid) and Javanese architecture researchers (Ronald, Ikaputra, Adishakti). While the physical files referred to the field research that was conducted by interviews and collecting the artefacts. The main findings of study of morphology in the city of Solo were: the skeleton element grew in three formations (central, cluster and organic); the meat element grew in three formations also (horizontal, vertical, and interstitial); and the blood element increased from the native people (Javanese, Madura, Banjar) to foreign people (Chinese, Arab, India, Dutch) and changed from agricultural to non-agricultural activities. The other findings were the city of Solo was constructed by a-three-concept of urban design as follows: the organic concept which was conducted by native people; the colony concept which was conducted by the Dutch; and the cosmology concept which was conducted by the Javanese Kingdom. In 1500s-1750s, initially the city of Solo was a settlement grew at the bank of Bengawan Solo. Afterwards, in 1750s-1850s it developed into a combined water- and land- based urban fabric Since 1850s, the city of Solo has left the river transportation and changed into the land transportation. Moreover, in 1900s the city of Solo built the new technology of transportation and urban utilities as follows: train, tram (streetcar), electricity and water city installations. In 2000s, the city of Solo acquired the city problems like the other cities in Indonesia. The city problems were divided into three aspects as follows: the built environment; the natural environment; and the social environment. The accumulation of those problems made the city grow in decline direction that needs to be fixed by a-sustainable-city design. Abstract in Bahasa Indonesia : Paper ini berusaha mengupas tentang perubahan struktur dan bentuk Kota Solo setelah mengalami perkembangan dari masa ke masa. Metode penelitian dilakukan dengan studi pendekatan kearsipan, baik arsip primer, arsip sekunder maupun arsip fisik. Untuk arsip primer bersumber pada naskah-naskah dokumenter Jawa, seperti parintah, undang-undang, pranatan, piyagem, kakancingan, serat, gugat, penget dan babad. Untuk arsip sekunder bersumber pada buku-buku dari para ahli sejarah (Ricklefs, Lombard, Vorstensteden, Muljana, Notosusanto, Kartodirdjo dll) dan hasil riset dari para ahli sejarah arsitektur Jawa (Ronald, Ikaputra, Adishakti dll). Untuk arsip fisik bersumber dari artefak, elemen alam dan tradisi masyarakat yang diperoleh dari survey lapangan. Temuan utama dari studi morfologi Kota Solo pada tahun 1500-2000 adalah, elemen tulang telah tumbuh membentuk berbagai formasi, yaitu memusat, mengelompok dan organik. Elemen daging telah tumbuh secara horisontal, vertikal dan interestisial. Sementara elemen darah telah berkembang dari orang-orang pribumi (Jawa, Madura, Banjar) bertambah dengan orang-orang pendatang (Cina, Arab, India, Belanda), dengan mata pencaharian dari agricultural ke non-agricultural. Temuan penting lainnya adalah, Kota Solo tersusun oleh tiga konsep yang berlainan, yang saling tumpang tindih, yaitu konsep organik oleh masyarakat pribumi, konsep kolonial oleh masyarakat Belanda dan konsep kosmologi oleh masyarakat Keraton Jawa. Kota Solo pada tahun 1500-1750 masih berupa kota tepian sungai di Bengawan Solo, kemudian pada tahun 1750-1850 berkembang menjadi kota campuran antara kota perairan dan daratan. Sejak tahun 1850an, Kota Solo mulai meninggalkan lalu lintas sungai dan berganti ke lalu lintas daratan, sehingga menjadi kota daratan. Apalagi sejak tahun 1900an, setelah dibangun teknologi baru pada sarana transportasi dan utilitas kota, yaitu jalur rel kereta api, jalur trem, jaringan listrik dan jaringan air bersih, maka Kota Solo benar-benar telah berubah ke kota daratan, meninggalkan hiruk-pikuk kota tepian sungai yang pernah terjadi di Bengawan Solo. Pada tahun 2000an, Kota Solo mengalami permasalah kota yang umumnya juga terjadi di kota-kota besar di Indonesia, yaitu permasalahan pada lingkungan alaminya, lingkungan buatannya dan lingkungan humannya. Akumulasi permasalahan kota itu menjadikan Kota Solo pada masa-masa mendatang akan semakin memasuki masa ke arah decline, sehingga perlu dicarikan grand-design kota yang sustainable. Kata kunci: morfologi, irreversible, kota, bentuk, struktur.
Archipelascape A Master Plan For Regenerating The Archipelagic Country Prayitno, Budi
JA! UBL Vol 1, No 1 (2010): Oktober
Publisher : Universitas Bandar Lampung (UBL)

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The regeneration of coastal cities is one of the key architectural, urban design and planning innovation with the of industrial decline, enhance livability and sustainability and transform the image of the Indonesian archipelagic and marine decline. Thus, the various design and planning model for waterfront regeneration could be able to develop and expand into mixed-use and hybrid function which invent new conjunction of public and private interest. In this emerging waterfront projects, inter-coastal cities competition turns the city into a product which is marketed and sold, focusing attention on the imagery which iconed the city and differentiates it from other coastal cities. Such images includes iconography of local waterfront and function is linked to the rise brand marketing in the archipelagic context.These planning activities show there have been a wide array of responses the opportunities and problems associated with spatial networks of coastal areas of metropolitan cities. They recognize a process starting with growing the nodes (coastal activities centers) and clustering some sub spatial networks through bridging them by water transportation systems. This process is shaped by creating multi-layered network of regional coastal cities into some clusters and corridors in the context of waterfront metropolitan regeneration in archipelagic country. There are three level of network in archipelagic spatial planning concepts that is cities network, regional network (intra-island and inter-island) and global network for fostering the ability of other regions to rival Jakarta city dominance in activities and drawing power. This is only when the regional coastal cities have acquired this power can there be a harmonization of centralized and decentralized planning policy.
KONTROL GEOLOGI DAN ANALISIS KUALITAS BATUBARA DAERAH BEANHAS DAN SEKITARNYA KECAMATAN MUARA WAHAU KABUAPATEN KUTAI TIMUR PROPINSI KALIMANTAN TIMUR INDONESIA Prayitno, Budi
Jurnal Ilmiah MTG Vol 4, No 1 (2011)
Publisher : Magister Teknik Geologi Program Pascasarjana UPN ”Veteran” Yogyakarta

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Penelitian berada di daerah Beanhas dan sekitarnya kecamatan Muara Wahau, Kabupaten Kutai Timur, Propinsi Kalimantan Timur, Indonesia. Geologi daerah penelitian termasuk dalam Formasi Wahau pada Cekungan Kutai bagian utara yang terbentuk pada Kala Oligosen Akhir – Miosen Awal dengan lingkungan pengendapan laut dangkal - darat (S. Supriatna dan H.Z.Abidin,1995). Berdasarkan hasil pengamatan lapangan formasi ini merupakan formasi pembawa batubara pada satuan batupasir Wahau dan satuan batulempung Wahau. Pola struktur yang berkembang adalah struktur lipatan besar dengan arah sumbu lipatan hampir mendekati Utara – Selatan. Struktur lipatan berupa Sinklin A, Antiklin A, dan Sinklin B. Hasil klasifikasi lipatan pada daerah penelitian menunjukan tipe lipatan Upright HorizontalFold (Fluety, 1964). Berdasar data bawah permukaan serta didukung data laboratorium, maka sebaran kualitas relatif merata pada setiap sub-lapisan batubara yang memiliki kecenderungan meningkat kearah bawah yaitu 4810-5519 Cal/g menjadi 5060 – 5699 Cal/g dengan diikuti penurunan kadar abu yaitu 4,17% menjadi 3,02%. Melihat ciri fisik,rank batubara daerah penelitian termasuk kedalam jenis lignit.
Groundwater exploration using Vertical Electrical Sounding (VES) Method at Toro Jaya, Langgam, Riau Suryadi, Adi; Putra, Dewandra Bagus Eka; Kausarian, Husnul; Prayitno, Budi; Fahlepi, Reza
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 4 (2018): JGEET Vol 03 No 04 : December (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24273/jgeet.2018.3.4.2226

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Vertical Electrical Sounding (VES) method is one of many methods in geophysics that was conducted in this research at Toro Jaya, Langgam, Riau. The aim of this research is to investigate and locate the depth of groundwater layer (aquifer). Data acquisition of VES was carried out using GEOCIST with Schlumburger configuration of electrode. There are four VES point in this research with various length of cable ranging from 135 m up to 200 m. From four VES point shown two different of resistivity value range. Very low resistivity value with range 0,34 – 0,9 Ωm interpreted as aquifer layer. The aquifer layer of research area divided into two types which are unconfined aquifer and confined aquifer. Meanwhile, another resistivity value ranging from 1,69 – 7  Ωm was interpreted as clay layers.
Influence of Geographical Conditions on the Spatial Structure of Jayapura City Baharuddin, Alfini; Wibisono, B Hari; Prayitno, Budi; Roychansyah, M Sani
Forum Geografi Vol 30, No 2 (2016): December 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i2.1766

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Jayapura City is situated in the eastern tip of Indonesia and borders the neighboring country Papua New Guinea (PNG).  Its geographical conditions are very diverse dominated by hills leading to the formation of separated urban areas. Currently, there are two major urban areas, Jayapura and Abepura. Historically, Jayapura and Abepura were two old towns established in the Dutch rule, namely Hollandia Haven and Hollandia Binnen. They are detached by Skyline hills that hinder their complete physical merger.  The presence of two separated urban areas in Jayapura City is also reinforced by the image perceived by the residents regarding with the powerful visual image of those cities. It however forms unique and distinctive properties in the spatial structure of Jayapura City. This study examines how the influence of geographical conditions on the spatial structre of Jayapura City. Data collection was done through direct observation and interviews with respondents of Jayapura and Abepura. Direct observation was conducted to obtain data on the use of land that form patterns in Jayapura City area. While collecting data through questionnaires conducted to determine the image of residents of Jayapura City on the spatial structure of the city. The results showed that the geographical conditions in Jayapura City affect the formation of two separate parts of the city.  The geographical condition is also an element forming a strong spatial structure as a characteristic reinforces the visual impression of the existence of two cities in a “single city”.
PERHITUNGAN DEFORMASI GEMPA KEBUMEN 2014 DENGAN DATA CORS GNSS DI WILAYAH PANTAI SELATAN JAWA TENGAH Prayitno, Budi; Awaluddin, Moehammad; Sudarsono, Bambang
Jurnal Geodesi Undip Volume 4, Nomor 4, Tahun 2015
Publisher : Jurusan Teknik Geodesi

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ABSTRAK Pada tanggal  25 Januari 2014 terjadi gempa bumi pada pukul 12:14:18 WIB dengan momen magnituda (Mw) 6,1 dengan kedalaman 66 km yang berpusat di 7,986°LS 109,265°BT atau 38 Km arah Selatan-Tenggara dari Adipala, Jawa Tengah. Guncangan gempa ini dirasakan di lima provinsi di Pulau Jawa, yaitu DKI Jakarta, Jawa Barat, Jawa Tengah, Jawa Timur, dan Yogyakarta. Guncangan terkuat dirasakan di Kabupaten Cilacap dan Kabupaten Kebumen. Oleh karena itu dilakukanlah penelitian mendalam perhitungan Deformasi Gempa Kebumen 2014 dengan data CORS GNSS di wilayah pantai selatan Jawa Tengah, untuk mengetahui nilai dan arah vektor pergeseran deformasi akibat gempa Kebumen ini.Penelitian ini menggunakan data pengamatan empat stasiun CORS GNSS (CCLP. CPBL, CKBM, CMGL) dengan data pengamatan tahun 2013, 2014 dan 2015. Titik IGS yang digunakan yaitu BAKO, PIMO, COCO, DARW. Pengolahan data menggunakan software ilmiah GAMIT.Penelitian ini menghasilkan nilai velocity rate sebelum maupun setelah gempa Kebumen 2014 dan nilai pergeseran akibat gempa beserta arah vektornya. Vektor kecepatan pergeseran horizontal sebelum gempa mengarah ke tenggara, dengan nilai kecepatan rata-rata Vhor = -0,0282 ± 0,0057 m/tahun. Vektor kecepatan pergeseran horizontal setelah gempa mengarah ke tenggara, dengan nilai kecepatan rata-rata Vhor = -0,0281 ± 0,0063 m/tahun. Vektor pergeseran horizontal akibat terjadinya gempa mengarah ke tenggara, dengan nilai pergeseran rata-rata dhor = -0,0063 ± 0,0035 m/tahun. Kata Kunci : GAMIT, Kecepatan Pergeseran, Pergeseran, Stasiun CORS GNSS ABSTRACT On January 25, 2014 earthquake occurred at 12:14:18 AM with a moment magnitude (Mw) 6.1 with a depth of 66 km centered at 7,986 ° S 109,265 ° E or 38 Km South-East of Adipala, Central Java. The quake was felt in five provinces in Java, namely Jakarta, West Java, Central Java, East Java, and Yogyakarta. The strongest shaking was felt in Cilacap and Kebumen. Therefore, in-depth research conducted this calculation Earthquake Deformation Kebumen GNSS CORS 2014, with the data on the southern coast of Central Java, to determine the value and direction of the vector shift of the deformation caused by the earthquake this Kebumen.This study uses observational data four GNSS CORS station (CCLP, CPBL, CKBM, CMGL) with observational data in 2013, 2014 and 2015. The point IGS used are BAKO, PIMO, COCO, DARW. Processing data using GAMIT scientific software.This research resulted in the value of velocity rate before and after the earthquake Kebumen 2014 and the value displacement caused by the earthquake and its direction vector. Horizontal velocity rate vector before the earthquake towards southeast, with an average speed Vhor = -0.0282 ± 0.0057 m / year. Horizontal velocity rate vector after the earthquake towards southeast, with an average speed Vhor = -0.028064 ± 0.0063 m / year. Horizontal displacement vector due to the occurrence of the earthquake towards southeast, with an average shift value dhor = -0.0063 ± 0.0035 m / year. Keywords : CORS GNSS Station, Displacement, GAMIT, Velocity Rate  *) Penulis, Penanggungjawab
SISTEM PAKAR UNTUK MENGIDENTIFIKASI PENYAKIT MATA DENGAN METODE CERTAINTY FACTOR Putra, Eka; Prayitno, Budi; Asri, Yessy; Dahroni, Andi
KILAT Vol 8 No 1 (2019): KILAT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/kilat.v8i1.367

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Eye disease today is no longer a rare disease suffered by humans. Many symptoms encountered makes people become confused if the types of eye diseases from which they suffer. Type of eye disease that often affects people of Indonesia according to the Ministry of Health is conjunctivitis, Pterygium, Cataract and Glaucoma. It's no secret if in a meeting with the ophthalmologist will cost not less. Expert systems are computer-based systems that use knowledge, facts and reasoning techniques in solving problems that normally can only be solved by an expert in the field. Forward chaining inference engine used in this study to chronicling the symptoms are inconclusive, then the certainty factor method so that we can determine what percentage of the disease in the suffering of patients through the results of the count in the method. Application web-based expert system created to provide information to people with eye disease illness is entered in accordance with the symptoms.