bluuebunny/crossref_metadata_2025 huggingface dataset:
KEDALAMAN BATUAN KERAS PERAIRAN SELAT LAUT SEBAGAI DATA AWAL UNTUK RENCANA PEMBANGUNAN JEMBATAN PULAU LAUT - KALIMANTAN
Authors: Aryanto Noor C.D. , Noviadi Yogi
Published: October 2018

Kotabaru merupakan ibukota Kabupaten Pulaulaut, Kalimantan Selatan. Guna mempercepat proses pembangunan, diupayakan untuk membangun jembatan yang menghubungkan daratan Pulau Laut dengan daratan Kalimantan.
Berdasarkan data seismik hasil survei pendahuluan diperoleh dua lokasi usulan untuk tapak fondasi kaitannya dengan kedalaman batuan kerasnya yang dikenali dari perbedaan reflektor yang demikian ekstrim, baik dari bentuk ataupun warna terhadap reflektor di atasnya. Lokasi-1 memiliki kedalaman batuan keras berkisar antara 4 hingga 20 meter dan 12 hingga 22 meter di bawah dasar laut. Di lokasi ini juga dikenali adanya struktur yang diperkirakan berupa sesar pada kedalaman 14 meter bawah dasar laut. Lokasi-2 di sayap barat dan timur P. Suwangi, memiliki kisaran kedalaman batuan keras antara 2 hingga 18 meter bawah dasar laut dengan kecenderungan makin dalam ke arah tengah perairan Selat Laut.

Kata kunci : batuan keras, seismik, Selat Laut dan Pulau Laut, Kalimantan Selatan.

Kotabaru is the capital of the Pulaulaut regency, South Kalimantan. The construction of the bridge that will connect Pulaulaut and Kalimantan is aimed to accelerate the development of the areas.
Based on the preliminary seismic data, two propose locations for bridge foundation relates to the depth of hard rock that can be recognized by the extremely differences of acoustic impedance. Location-1 has a hard rockâ€™s depth between 4 to 20 meters and 12 to 22 meters beneath sea floor. In this location, it is also recognized a fault structure at 14 meters depth. Location-2 in the west and east wings of Suwangi Island has the acoustic basement depth between 2 to 18 meters from the sea floor and it is deeper toward the centre of Selat Laut waters.

Keywords : hard rock, seismic, Laut Strait and Laut Isle, South Kalimantan.
PROSPEKSI EMAS LETAKAN DI PERAIRAN BAYAH, KABUPATEN LEBAK, PROPINSI BANTEN
Authors: Kurnio Hananto , Purwanto Catur
Published: October 2018

Mineral emas letakan di perairan Bayah dijumpai dalam sedimen dasar laut perairan, pantai dan sungai. Emas letakan Bayah dari hasil analisis mineral butir terakumulasi pada sedimen pasir berukuran sangat halus (0,125 hingga 0,0625 mm). Hasil analisis mineral bijih, kandungan tinggi Au dan Ag berasosiasi dengan kandungan tinggi mineral magnetik. Dari kurva energi fluks gelombang sebagian pantai perairan Bayah memiliki kecenderungan akresi akibat proses sedimentasi aktif yang membawa emas letakan. Hasil penelitian diketahui kadar Au 0,4-1,8 ppm, Ag 6,8-7,8 ppm, Fe 38,54-48,64 % dan Cu 17-18 ppm. Sedangkan data bor dalam prospek emas letakan pada kedalaman bor 9-14 meter, mempunyai kadar antara 0,4-1,8 ppm.
Pendulangan yang dilakukan pada 13 lokasi sepanjang pantai Bayah mendapatkan hanya 3 lokasi nihil sehingga persentase keterdapatan emas letakan di daerah ini sementara adalah 76,9 %.

Kata kunci: emas letakan, sedimen dasar laut, mineral bijih, mineral magnetit, energi fluks gelombang

Gold placer mineral indications in Bayah waters are occurred in the seafloor, coastal and river sediments. Bayah gold placer is accumulated in a very fine sand sediment (0.125 up to 0.0625 mm). Results of ore mineral analyses, the high content of Au and Ag samples are associated with high content of magnetic minerals. The observation of wave flux energy curve, parts of Bayah Coast tends to accretion due to active sedimentation process that carrying gold placer. Research results, it is known that Au 0,4-1,8 ppm, Ag 6,8-7,8 ppm, Fe 38,54-48,64 % and Cu 17-18 ppm . While from deep borehole, gold placer prospects are between depths of 9-14 meters with the range of the contents between 0,4-1,8 ppm.
Gold panning carried out in 13 locations along Bayah beach found out only 3 empty gold locations; thus percentage of gold placer existences in this area temporarily 76.9 %.

Key words: gold placer, seafloor sediments, ore minerals, magnetite minerals, wave flux energy
INDIKASI KEBERADAAN GAS BIOGENIK DI DELTA SUNGAI CIMANUK BERDASARKAN DATA SEISMIK DAN BOR INDRAMAYU, JAWA BARAT
Authors: Astawa Nyoman , Lugra Wayan
Published: October 2018

Hasil interpretasi seismik di daerah penelitian, dijumpai adanya indikasi rembesan gas dari bawah permukaan dasar laut yang membawa material sedimen sangat halus. Hal tersebut memperjelas bahwa di daerah lepas pantai gas yang terbentuk di dalam sedimen dan tidak terperangkap.
Analisis bakteri semua percontoh bor inti, menunjukkan semua percontoh mengandung bekteri pembentuk gas biogenik (methan). Gas biogenik juga keluar dari sumur air penduduk di desa Brondong dan Pasekan, dengan kedalaman berkisar antara 100 â€“ 150 meter.

Kata kunci : delta, seismik, sumur bor, dan gas

Seismic interpretation from the surveyed area indicate a gas seep from the sea floor together with the very fine sediment materials. It is olso indicates that the gas formed underneath are untrapped. Bacterical analyses from whole core samples, indicate that all samples contain of bacterical forming biogenic gas (methane gas). The gas are olso seeping from several wells in Desa Brondong and Pasekan at 100-150 meters depth.

Keywords : delta, seismic, well, and gas
TINJAUAN GEOLOGI KELAUTAN PERAIRAN SEMENANJUNG MURIA TERHADAP RENCANA TAPAK KONSTRUKSI PLTN
Authors: Usman Ediar , Lugra Wayan
Published: October 2018

Semenanjung Muria terletak di pantai utara Kabupaten Jepara, Provinsi Jawa Tengah. Daerah ini akan dikembangkan menjadi daerah tapak Pembangkit Listrik Tenaga Nuklir (PLTN). Secara geologi, di daerah ini berkembang berbagai fenomena geologi seperti struktur sesar, gunungapi dan kegempaan.
Berdasarkan hasil interpretasi rekaman seismik pantul di perairan Semenanjung Muria menunjukkan adanya struktur sesar pada penampang Lintasan L-1 dan L-3. Struktur sesar tersebut terbentuk pada Sekuen B dan di bawah Sekuen A.
Adanya struktur sesar di laut tersebut perlu mendapat perhatian dalam perencanaan tapak kontruksi PLTN Muria, sehingga aspek yang dapat membahayakan konstruksi dapat diperhitungkan sebelumnya terhadap perencanaan kekuatan dan stabilitas konstruksi.

Kata kunci : sesar, seismik pantul, perencanaan konstruksi, Semenanjung Muria.

Muria Peninsula is located at the north coast of Jepara District, Central Java Province. This area will be developed for the foundation of Nuclear Energy Electrics Powers Station. Geologically, the study area has some geological phenomena such as fault structures, earthquakes and volcanisms.
Based on seismic interpretation the Muria Peninsula waters shows the occurence of faults on L-1 and L-3. The fault structure formed at Sequence B and under Sequence A as a Quaternary sediment.
These faults are seemly the continuation of faults present on land. Therefore, the construction of Muria station should be considered regarding the occurrence of these faults especially in the planning of stability and strength of foundation.

Keyword : faults, reflection seismic, planning of construction, Muria Peninsula.
KAJIAN DINAMIKA PANTAI SELATAN BANYUWANGI BERDASARKAN HASIL PENAFSIRAN CITRA SATELIT LANDSAT TM
Authors: Hernawan Undang , Budiono Kris
Published: October 2018

Hasil kajian citra satelit Landsat Thematic Mapper (TM) menunjukkan daerah pantai selatan Banyuwangi mempunyai empat karakteristik dinamika pantai, yaitu daerah akresi, terjadi di muara Sungai Gonggo, Sungai Baru, dan Sungai Pergaul yang terjadi karena tingginya aliran (run off) dari sungai. Daerah abrasi terjadi di Teluk Grajagan yang terjadi karena adanya arus menerus dari laut sehingga sedimen dari Segoro Anakan tidak bisa diendapkan di daerah teluk dan hanya di muka sungai. Daerah abrasi dan akresi terdapat di teluk Rajegwesi dan Pancamaya yang mempunyai daerah akresi di muara sungai dan daerah abrasi di bagian sisi teluknya. Daerah stabil, terdapat di daerah-daerah yang menjorok ke laut dan sepanjang pantai Alas Purwo. Daerah akresi maupun abrasi umumnya terjadi di daerah topografi rendah, landai dan berupa aluvium, sedangkan daerah stabil terdapat pada daerah dengan topografi bertebing dan batuan penyusun berupa batuan keras.

Kata kunci : sedimen, dinamika pantai, Landsat TM, pantai selatan Banyuwangi

The result of the assesment of Landsat TM imageries show that the coastal area of south Banyuwangi have four coastal dynamic characteristics those are: accretion, abrasion, accretion and abrasion, and stable areas. Accretion area, is located in the river estuary of Gonggo, Baru, and Pergaul rivers that occur by run off from river. Abrasion area, is located in Grajagan Bay caused by continuous current from the sea so that the sediment from Segoro Anakan cannot precipitate in the bay area but only in the river mouth. Abrasion and accretion areas are located in Rajegwesi and Pancamaya Bays where the accretion area is in a river estuary but the abrasion area is in the side shares of the bay. Stable area is located in the peninsula area and along the Alas Purwo coast. Generally the accretion or abrasion areas were occurred in low relief topography and occupied by alluvium, whereas the stable area is characterized by the high relief topography consisting of hard rock.

Key words: sediment, coastal dynamic, Landsat TM, south coast of Banyuwangi.
STUDI PENURUNAN SEDIMEN KUARTER DI PERAIRAN CIREBON, PROPINSI JAWA BARAT
Authors: Budiono Kris , Raharjo Purnomo
Published: October 2018

Penelitian ini lebih difokuskan dalam mengaplikasikan data geologi teknik untuk menganalisis kemungkinan potensi penurunan sedimen Kuarter apabila didirikan suatu bangunan laut. Secara umum litologi daerah penelitian diperkirakan terdiri dari sedimen berumur Plistosen sampai Kuarter Data yang dipergunakan adalah data hasil pemboran teknik di laut dengan uji SPT dan hasil analisa laboratorium mekanika tanah.
Berdasarkan pada perhitungan nilai SPT untuk setiap tiang pancang menunjukkan bahwa nilai daya dukung dijinkan (Qa) adalah 83,726 ton. Perkiraan nilai penurunan (St) adalah 0,992 cm atau 0,390 inci.
Hasil perhitungan untuk dimensi dermaga yang direncanakan memperlihatkan bahwa beban total yang terjadi pada dermaga (q) adalah 2,18 ton/m2. Potensi penurunan lapisan tanah berdasarkan hasil uji laboratorium adalah 2,35 cm. Lamanya penurunan untuk terjadinya konsolidasi 10% adalah 94,81 hari (3,16 bulan), konsolidasi 20% adalah 367,41 hari (1,06 tahun), konsolidasi 50% adalah 2334,81 hari (6,39 tahun) dan konsolidasi 90% adalah 100503,7 hari (27,54 tahun). Berdasarkan kondisi tersebut di atas, menunjukan bahwa daerah penelitian memiliki potensi penurunan kecil dan dalam dalam waktu yang relatif lama.

Kata kunci : geologi teknik, penurunan, bangunan laut, perairan Cirebon

The aim of the study is mainly to apply the engineering geological data for analyzing the settlement potency of Quaternary sediments if the sea construction is built.
In general, the litology in the study area consist of Plistocene to Recent sediments.
The data used in this study are the offshore cores, namely, the SPT test and soil mechanic analyses.
The SPT values of each pile shows that the allowable bearing capacity value is 83,726 ton. The estimation of settlement value ((St) is 0,992 cm or 0,390 inches.
The total sediment loaded at the port (q) is 2,18 ton/m2, whereas based on the laboratory test analysis, it shows that the potential of soil settlement layer is 2,35 cm. The settlement period for 10% of consolidation is 94,81 days (3,16 months), 20% of consolidation is 367,41 days (1,06 years), 50% of consolidation is 2334,81 days (6.39 years), and 90% of consolidation is 100503,7 days (27.54 years). The above conditions indicate that the settlement in the study area is under going subsidence in small potential and in relatively long period.

Key word : engineering geology, settlement, offshore structur, Cirebon waters
POTENSI OBJEK WISATA PANTAI DAN BAHARI DI PERAIRAN UTARA LOMBOK DITINJAU DARI ASPEK GEOLOGI KELAUTAN
Authors: Lugra Wayan , Arifin Lukman
Published: October 2018

Daerah penelitian dengan latar belakang Gunung Rinjani yang indah, memiliki potensi untuk dikembangkan sebagai daerah tujuan wisata pantai seperti Karang Bedil, Sesait, Desa Salangan, Sukadana, Tanjung Batu, Sungian, Labuhan Pandan, serta pantai timur Pulau Gili Sulat dan Gili Lawang. Untuk kegiatan wisata snorkling, diving dan surfing tempat yang baik adalah di Tanjung Awar-awar, Tanjung Menangis dan Tanjung Batu. Olah raga surfing (selancar air) disarankan sebaiknya dilakukan antara Bulan Oktober â€“ Mei.
Dalam membangun sarana penunjang di kawasan wisata pantai dan bahari faktor yang penting adalah memberikan perhatian khusus dalam menjaga kelestarian lingkungan daerah tujuan wisata, agar keaslian alam yang ditawarkan kepada wisatawan tetap asli.

Kata kunci: Karakteristik pantai, sebaran sedimen permukaan dasar laut, batimetri, dan perubahan garis pantai.

The study area, with the background of the beautiful Mount Rinjani, has a potency to develop as a coastal tourism such as Karang Bedil, Sesait, Desa Salangan, Sukadana, Tanjung Batu, Sungian, Labuhan Pandan, and the east coast of Gili Sulat and Gili Lawang Islands. For snorkling, diving and surfing the nice place is in Tanjung Awar-awar, Tanjung Menangis and Tanjung Batu. The right time for snorkling sport should be conducted between October - May.
To build the supporting facilities in the coastal and venerable tourism objects, the important factor is to pay a special attention for keeping the everlasting environment of the tourism object destination, so that the original of nature which is offering to the tourists is still pristine.

Keywords: coastal characteristic, sea floor surficial sediment, bathymetry and coastline chnges
PETROGENESA ENDAPAN PASIR BESI DI PANTAI PANGGUL, TRENGGALEK
Authors: Utoyo Harry , Sarmili Lili
Published: October 2018

Endapan pasir besi di Pantai Panggul Trenggalek didominasi oleh mineral-mineral berat yang terdiri dari magnetit (> 70 %), ilmenit, piroksen, horenblenda, zirkon, apatit dan feldspar. Batuan sumber diduga berasal dari batupasir magnetit bagian dari Formasi Jaten serta batuan gunung api Tersier yang banyak tersebar di daerah Trenggalek. Terbentuknya magnetit diduga berasal dari mineralisasi magnetit dari batuan gunung api Formasi Mandalika, seperti yang dijumpai di Ngadipuro, Kecamatan Munjungan.
Batuan gunung api Tersier daerah Trenggalek, Jawa-Timur umumnya dibentuk oleh batuan berkomposisi andesitik hingga dasitik, yang berbentuk dyke, stock dan sill, serta berstruktur lava bantal. Analisis petrografi umumnya memperlihatkan tekstur porfiritik, berstruktur aliran dan teralterasi pada tingkatan yang rendah menjadi klorit, karbonat serisit dan epidot.

Kata kunci: pasir besi, batuan gunung api, mineralisasi, pantai Panggul Trenggalek.

Iron sand deposit in Panggul coast Trenggalek is dominated by heavy minerals, consist of magnetite (> 70 %), ilmenite, pyroxene, hornblende, zircon, apatite and feldspar. The source rock is estimated from magnetite sandstone of Jaten Formation and Tertiary volcanic rocks which are widely distribute in Trenggalek area. The formation of magnetite is interpreted from volcanic rock of Mandalika Formation, which crop out in Ngadipuro, Munjungan.
Tertiary volcanic rocks in The Trenggalek area, East Java are mainly formed by andesitic to dacitic composition which are in the form of dyke, stock, sill and pillow lava structures. Petrographic analysis generally shows porphiritic, flow structure in textures and low alteration to chlorite, carbonate, sericite and epidot minerals.

Keywords: iron sand, volcanic rocks, mineralization, Panggul coast Trenggalek.
SEBARAN ENDAPAN KUARSA DI PERAIRAN DELTA KAPUAS, PONTIANAK, KALIMANTAN BARAT
Authors: Kamiludin Udaya , Darlan Yudi
Published: October 2018

Dasar laut Delta Kapuas ditutupi oleh fraksi sedimen lempung sampai pasir yang secara tekstural mempunyai persentase pasir antara kosong sampai 100 %. Fraksi sedimen ini berdasarkan hasil analisis oles tipis yang ditunjang oleh sebagian analisis mineralogi butir umumnya berkomposisi utama kuarsa. Ikutannya dalam jumlah relatif kecil, terdiri atas feldspar, mika, ilmenit, piroksen Fe/Mn oksida, foraminifera, fragmen dan mikrit. Secara lateral, sebaran kuarsa relatif membesar ke arah bagian hulu sungai dengan persentase mencapai 75 %. Berdasarkan tatanan stratigrafi dan cara pembentukannya maka keberadaan kuarsa dalam sedimen permukaan dasar laut, selain dari hasil pengerjaan ulang Aluvium dan arenit kuarsa itu sendiri juga berasal dari erosi batuan primer Granit Sukadana yang berada di sebelah timur daerah penelitian.

Kata Kunci : Sedimen permukaan, analisis oles tipis, kuarsa, Granit Sukadana dan perairan Delta Kapuas.

Sea floor of Kapuas Delta is covered by sediment fraction from clay to sand in size. Texturally, the percentages of sand fraction is ranging between null to 100 %. Base on smear slide and grain analysis the sediment fraction is composed mainly quartz. Associated mineral accessories are relatively small which is consisted of feldspar, mica, ilmenite, pyroxene, Fe/Mn oxide, foraminifera, calcareous fragment and micrite. Laterally, distribution of quartz relatively increased towards upstream with percentage reaches 75 %. Based on stratigraphy setting and its formation, the existence of quartz in the sea floor surficial sediment, apart resulted from reworking of Alluvium and quartz arenite itself, it also comes from erosion of primary rock Granite Sukadana located eastside of the investigation area.

Keywords: Surface sediment, smear slides analysis, quartz, Granite Sukadana and Delta Kapuas water.
PENGARUH SEDIMENTASI TERHADAP PENYEBARAN TERUMBU KARANG DI TELUK WONDAMA, PAPUA
Authors: Permanawati Yani , Sarmili Lili
Published: October 2018

Endapan lumpur yang terdapat di bagian barat teluk Wondama sebarannya sangat sedikit jika dibandingkan di bagian timurnya. Endapan lumpur ini tidak berhubungan langsung dengan hasil erosi sungai baik di bagian barat maupun teluk Wondama tetapi berasal dari bagian selatan teluk yang dibawa oleh arus ke arah utara.
Batugamping mendominasi bagian barat teluk Wondama, sedangkan sungai-sungai yang melewati batugamping ini, airnya tentunya akan banyak mengandung unsur karbonat sehingga menjadikan terumbu karang lebih mudah tumbuh di sepanjang pantai bagian Barat dibandingkan bagian Timur teluk
Terjaganya kehidupan terumbu karang ini karena lingkungan yang bersih yang juga ditunjang oleh pola kehidupan masyarakat pesisir teluk Wondama yang sadar menjaga keseimbangan alam termasuk para nelayan yang masih menggunakan alat penangkapan ikan tradisional.

Kata kunci : Terumbu karang, endapan lumpur, Teluk Wondama

The distribution of mud on westernpart of Wondama Bay is very limited compared to its easternpart. The existence of mud is not directly related to the erosion of rivers along its west or east of the bay but it is originated from the south of the bay where current brought the sediment to the north.
The limestone is dominated on its westernpart of Wondama bay, whereas rivers those cut the limestone will contain carbonate element and will support the coral reef grows better on its westernpart rather than on its easterpart of the bay.
The good reservation of the coral reef is clearly related to clean environment and also supported by human lifes whose can keep and preserve the natural balance, for example, the fisheries are still using a traditional equipment.

Keyword : Cora reef, deposition of mud, Wondama Bay
KETERDAPATAN MINERAL ZIRKON DAN HUBUNGANNYA DENGAN BATUAN METAMORFIK DI TELUK WONDAMA, PAPUA
Authors: Sarmili Lili , F.X. Jevie
Published: October 2018

Mineral Zirkon sebagai mineral primer umumnya ditemukan pada batuan beku, batugamping kristalin, sekis, dan genes, juga di dalam batuan sedimen sebagai sedimen plaser yang diendapkan di pantai dan di muara sungai.
Hasil analisis petrografi dari empat lokasi contoh di teluk Wondama Papua Barat, menunjukan WDM06-20 adalah amfibolit, WDM06-21 adalah mica schist, WDM06-22 adalah amfibolit, dan WDM06-23 adalah schist.
Hasil analisis kimia lainnya menunjukan bahwa batuan asal termasuk kedalam batuan yang bersifat siliceous-alkali-calsic rock, sedangkan keterdapatan zirkon di daerah penyelidikan berada di dalam lingkungan batuan metamorf.
Hasil ploting tipologi, mineral zirkon yang diambil dari percontohan di sepanjang pantai, termasuk kedalam tipe utama granite terutama berasal dari kerak benua dan berdasarkan populasi dan bentuk kristal termasuk ke dalam (Sub)autochthonous Monzogranit and Granodiorites.
Berdasarkan data analisis kimia dan bukti-bukti di lapangan bahwa batuan asal dapat ditafsirkan sebagai batuan bersifat granitik yang telah mengalami proses granitisasi menjadi batuan metamorfik.

Kata Kunci : Mineral zirkon, batuan metamorf, granit, Teluk Wondama Papua.

A zircon mineral as a primary mineral is generallly formed in the igneous rocks, crystalline limestones, schists, and gneisses also in sedimentary rocks in beaches and rivers as placer deposits.
The petrographical analyses from four differents samples shows that WDM 06-20 is amphibolite, WDM 06-21 is micca schist, WDM 06-22 is amphibolite and WDM 06- 23 is schist.
From other chemical analyses show that the source rocks belong to siliceous-alkali-calsic rocks whereas the occurrences of zircon minerals in the study area are correlates to metamorphic rocks.
On typological evolution trends, zircon minerals from samples taken alongs the shoreline are plotted as granitic rocks of continental crust, and based on their population and crystallographical forms they are in (sub) autochthonous Monzogranite and Granodiorite.
Based on data of chemical analyses and fieldworks, the source rock can be interpreted as granitic rocks which have been substituted by granitization process to be metamorphic rocks.

Keyword : Zircon mineral, metamorphic rock, granite, the Wondama Bay of Papua.
TINJAUAN GEOLOGI TERHADAP MODEL ELEVASI DIGITAL SISTEM PARIT-PRISMA AKRESI, SELATAN JAWA
Authors: Kusnida Dida , Naibaho Tommy
Published: October 2018

Model elevasi digital sistem parit-prisma akresi selatan Pulau Jawa menggambarkan keterwakilan topografi dasar laut seperti elevasi, lereng dan lain sebagainya secara tepat dan dengan mudah dapat dikuantifikasikan serta digambarkan sebagai output images. Sistem parit-prisma akresi selatan Pulau Jawa terletak di sebelah tenggara tepian Paparan Sunda dan diperkirakan dialasi oleh kerak samudera terakresi dan berada pada tahap awal evolusi. Analisis topografi rinci data model elevasi digital (DEM) dari daerah ini menunjukan hubungan yang erat antara struktur geologi dan batas satuan batuan.

Kata kunci : parit, prisma akresi, DEM, topografi, lereng.

Digital elevation model of the trench-accretionary prism system off south Java Island displays an accurate representation of seafloor topographic such as elevation, slope, etc and can easily be quantified and is displayed as output images. The trench-accretionary prism system off south Java Island lies on the southeast Sunda Shelf continental margin and it is suggested to be underlain by the basement of accreted oceanic crust, which is still in an early stage of evolution. Detailed topographic analysis of the digital elevation model (DEM) data from the area reveals a strong correlation between geological structures and rock unit boundaries.

Keywords : trench, accretionary prism, DEM, topography, slope.
PEMODELAN 3-D SUSEPTIBILITAS MAGNETIK BAWAH PERMUKAAN DASAR LAUT PERAIRAN LANGSA, SELAT MALAKA-SUMATERA UTARA
Authors: Nhirwana Budi , Subarsyah Subarsyah
Published: October 2018

Penyelidikan geomagnet laut di perairan Langsa, Selat Malaka-Sumatera Utara memberikan informasi tentang anomali magnetik akibat distribusi suseptibilitas magnetik di bawahnya. Distribusi suseptibilitas magnetik dapat diperoleh dengan menggunakan teknik pemodelan magnetik 3 dimensi (3-D). Penerapan metode ini pada data anomali magnetik residual perairan Selat Malaka manghasilkan model 3-D suseptibilitas magnetik dengan kisaran nilai -0.15 SI hingga 0.15 SI pada kedalaman 0 hingga 3000 m. Model suseptibilitas magnetik memperlihatkan adanya kelurusan struktur berarah relatif baratdaya-timurlaut yang membagi 2 sumber anomaly yang berada di bawah daerah selidikan.
Diperkirakan adanya batuan diamagnetik dan batuan intrusif yang menjadi sumber anomali bawah permukaan daerah selidikan yang secara geografis terletak pada daerah cekungan busur belakang Sumatera Utara.

Kata kunci : anomali magnetik, suseptibilitas magnetik, model inversi, Selat Malaka.

Marine geomagnetic survey in Langsa Waters, Malaka Strait-North Sumatra provides information on the magnetic anomaly caused by magnetic susceptibility distribution underneath. Magnetic susceptibility model can be derived using 3-D geomagnetic inversion technique. The application of this method for residual magnetic anomaly data obtained from North Sumatra waters resulting 3-D of magnetic susceptibility model ranging from -0.15 â€“ 0.15 SI at depth between 0 - 3000 m. Magnetic susceptibility model shows the present of structure lineation directing relatively southwest-northeast dividing two anomaly sources beneath investigated area. It is suggested that there are diamagnetic substance and intrusive rocks as anomaly source beneath the surveyed area where geographically located at fore arc basin area of North Sumatra.

Keywords: magnetic anomaly, magnetic susceptibility, inverse modeling, Malaka Strait
MODEL PENURUNAN SEDIMEN PERMUKAAN DASAR LAUT PADA DASAR RENCANA PEMECAH GELOMBANG DI TELUK PANCAMAYABANYUWANGI - JAWA TIMUR
Authors: Novico Franto , Gerhanae Nineu Yayu
Published: October 2018

Demi menghasilkan pemecah gelombang yang aman, maka perlu dilakukan analisis geologi dan geoteknik kelautan. Analisis ini akan memberikan informasi tentang kondisi fisik sedimen laut yang mengalami suatu perubahan pembebanan akibat adanya infrastruktur kelautan. Berdasarkan hasil analisis Plaxis versi 8, maka dapat diketahui bahwa besarnya nilai total deformasi yang disebabkan oleh beban struktur setinggi 8 meter dan gaya arus sebesar 1 kN/m2 adalah sebesar 72,77*10-3 m. Lapis sedimen sekitar badan dan kaki pemecah gelombang memiliki nilai deformasi ekstrem yang lebih merata sedangkan nilai ekstrem deformasi terjadi pada tengah struktur di kedalaman -5,50 meter.

Kata Kunci : pemecah gelombang, perangkat lunak Plaxis versi 8, deformasi ekstrem, Pancamaya Banyuwangi

Marine geology and geotechnical analyses are indeed important in order to get a safe breakwater design. To build a safe infrastructure, these analyses would produce a model to describe the displacement condition of marine sedimen. Applying 8 meters height of breakwater and 1 kN/m2 current, the Plaxis software v.8 gave a result 72,77*10-3 m of total deformation. In addition, an extreme deformation occurred in the middle of -5,50 meters breakwater, while equilibrium deformation occurred around areas between toe and breakwater body.

Keywords : breakwater, Plaxis software v.8, extreme deformation, Pancamaya Banyuwangi
KARAKTERISTIK PANTAI KAWASAN PESISIR LARANTUKA DAN SEKITARNYA, P. FLORES TIMUR DAN KAWASAN PESISIR P. ADONARA BARAT
Authors: Astjario Prijantono , Yuningsih Ai
Published: October 2018

Kawasan pantai Larantuka berada di pantai timur Pulau Flores dan kaki Gunungapi Ile Mandiri membentuk bentang alam pesisir bertebing curam dan landai. Kawasan pesisir dapat diklasifikasikan dalam tiga tipe pantai, yaitu tipe pantai bertebing berbatu, pantai berpasir dan pantai berbakau. Tipe pantai bertebing berbatu berada pada kaki gunungapi dibatasi oleh lava. Tipe pantai berpasir merupakan kawasan pantai dengan bentang alam landai sedangkan kawasan pantai berbakau tersebar cukup luas khususnya pada teluk dangkal.
Pulau Adonara didominasi oleh produk gunungapi tua yang terdiri dari lava, breksi gungungapi dan pasir-tufa gampingan. Kawasan pantai tipe bertebing berbatu ditempati oleh batugamping terumbu serta lava. Sedangkan tipe pantai berpasir yang membentuk bentang alam landai ditempati pasir serta kerikil volkanik dengan terkadang ditemui tumbuhan bakau.

Kata kunci : kawasan pesisir, bakau, bongkah, dan lava

Lanrantuka area lies on the eastern coast of Flores island and in the foot of the Ile Mandiri mountain. The Larantuka area has steep and slightly slopes. Coastal morphology can be classified into three beach types, steep and stony, sandy and mangrove beaches. The steep and stony beach lie on foot of a mountain with lava boulder. The sandy beach has slightly slope coast line and mangrove beach develops widely in area specially in the shallow bay.
Adonara island is dominated by old volcanic products, which are composed of lava, volcanic breccia and calcareous-sandy tuff. The coastal type with steep and stony beach is covered by coral limestone and lava. The sandy beach has slightly slope coast line covered by sand and gravel volcanics with occasionally mangrove trees.

Key words : coastal, mangrove, boulder and lava.
SEBARAN DUGAAN GAS BIOGENIK BERDASARKAN HASIL PENAFSIRAN REKAMAN STRATA BOX DI PERAIRAN TANJUNG PONTANG-BANTEN
Authors: Astawa Nyoman , Kurnio Hananto
Published: October 2018

Penelitian gas biogenik di perairan Tanjung Pontang dan sekitarnya menerapkan metode geofisika menggunakan alat akustik (strata box). Keberadaan gas biogenik dalam rekaman akustik, dicirikan oleh tidak adanya gambaran pantul dalam (free reflector), dan menampakan warna hitam. Penelitian ini bertujuan untuk memanfaatkan sumber daya energi alternatif, berupa gas biogenik untuk dapat dimanfaatkan oleh masyarakat di sekitar daerah penelitian.
Hasil penafsiran rekaman strata box, kemudian runtunan yang diperkirakan mengandung gas biogenik diplot dalam peta lintasan. Hasil penafsiran menunjukkan bahwa akumulasi gas biogenik terdapat di kedalaman 2.5 meter pada lintasan 3 (L-3), di kedalaman 10.0 meter pada lintasan 7 (L-7), dan di kedalaman 5.0 meter pada lintasan 3 (L-3).

Kata kunci : rekaman strata box, penafsiran, peta pola sebaran gas biogenik.

Biogenic gas research in Tanjung Pontang and its surrounding waters applied geophysic method of acoustic equipment (strata box). Occurrences of biogenic gas in the acoustic records were characterized by no internal reflection patterns (free reflector), and black colour appearance. The research was meant to utilize alternative energy resources, biogenic gas for local community surround the gas deposits.
Results on strata box interpretation, then plotted on ship track map of its possible biogenic gas bearing sequences. It indicates that biogenic gas is accumulated in 2.5 meter depth on the 3 (L-3) track, in 10.0 meter depth on the 7 (L-7) track, and in 5.0 meter depth on the 3 (L-3) track.

Key words : strata box records, interpretation, biogenic gas distribution pattern map.
Editorial
Authors: Toledo Rodrigo Alberto
Published: October 2018

A Revista Espaço de Diálogo e Desconexão – REDD – foi uma iniciativa do Grupo de Pesquisa Temático Trabalho e Trabalhadores, que funcionou na Faculdade de Ciências e Letras de Araraquara – Unesp, por quase10 anos. Portanto é com muita satisfação que comemoramos uma década de publicações e atuação no meio acadêmico e científico para a divulgação da produção de Iniciação Científica, de Mestrado, de Doutorado e demais pesquisadores de diversas universidades brasileiras e estrangeiras.A despeito de a área foco ser a Sociologia do Trabalho e a Sociologia Rural, a REDD vem publicando, nessa última década, trabalhos que possuem objetos de pesquisa que transitaram por diversas áreas do conhecimento sociológico. Dessarte, esse dado vem confirmar não somente o seu caráter interdisciplinar, mas o potencial de também projetar os desafios que a revista passará a ter a partir deste volume 11, número 1 de 2018, como poderemos notar ao ler a presente edição. Antes, porém, queremos render homenagens aos editores Leila Stein, Andréia Brito e Ricardo Sapia, pois não mediram esforços para que a REDD pudesse, em 2018, comemorar 10 anos de existência figurando como um dos mais importantes periódicos da FCLAr-Unesp de Araraquara. Destacamos, in memorian, o papel da professora e pesquisadora Leila Stein que de forma pioneira, estabeleceu as bases da REDD e contribuiu para o desenvolvimento de pesquisas acadêmicas, perenizadas nos números da revista e em gerações de pesquisadores que, certamente, levam consigo o rigor científico, a dedicação aos estudos sociológicos e o compromisso com a universidade pública, marcas indeléveis da trajetória da Leila Stein.
A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector
Authors: Ramon Eric , Sguazzo Carmen , Moreira Pedro M. G. P.
Published: October 2018

Epoxy resins are one of the most widely used thermosets in different engineering fields, due to their chemical resistance and thermo-mechanical properties. Recently, bio-based thermoset resin systems have attracted significant attention given their environmental benefits related to the wide variety of available natural resources, as well as the resulting reduction in the use of petroleum feedstocks. During the last two decades, considerable improvement on the properties of bio-sourced resins has been achieved to obtain performances comparable to petroleum-based systems. This paper reviews recent advances on new bio-based epoxy resins, derived from natural oils, natural polyphenols, saccharides, natural rubber and rosin. Particular focus has been given to novel chemical formulations and resulting mechanical properties of natural derived- epoxies, curing agents or entire systems, constituting an interesting alternative for a large variety of engineering applications, including the aviation sector. The present work is within the scope of the ECO-COMPASS project, where new bio-sourced epoxy matrixes for green composites are under investigation.
Letter to the Editor Re: Kipperman, B.S. and German, A.J. Animals 2018, 8, 143
Authors: Watson Katharine M.
Published: October 2018

A recent opinion paper by Kipperman and German (2018) discussed the increasing prevalence of pet obesity, the risk factors contributing to this increase, and the role of veterinarians in helping manage pet obesity. They described the problem as a One Health problem as it has been previously characterized. Kipperman and German also reported a sample of medical records from their referring veterinarians wherein a surprisingly small number of veterinarians recorded information about pets’ body weight or discussions with owners about pet obesity. From their sample, they concluded that general practice veterinarians are not meeting their professional and ethical obligations to recognize and address pet obesity. This letter discusses reasons why veterinarians may not be adequately addressing the pet obesity problem. A similar situation exists in human medicine. Numerous studies in the human field have revealed some of the reasons many physicians do not address obesity with their patients. As it is likely that veterinarians have similar reasons for avoiding the obesity issue, obstacles identified by physicians in encountering overweight obesity are reviewed in this letter.
Machine Learning Approach to Dysphonia Detection
Authors: Dankovičová Zuzana , Sovák Dávid , Drotár Peter , Vokorokos Liberios
Published: October 2018

This paper addresses the processing of speech data and their utilization in a decision support system. The main aim of this work is to utilize machine learning methods to recognize pathological speech, particularly dysphonia. We extracted 1560 speech features and used these to train the classification model. As classifiers, three state-of-the-art methods were used: K-nearest neighbors, random forests, and support vector machine. We analyzed the performance of classifiers with and without gender taken into account. The experimental results showed that it is possible to recognize pathological speech with as high as a 91.3% classification accuracy.
A State-of-the-Art Review on Robots and Medical Devices Using Smart Fluids and Shape Memory Alloys
Authors: Sohn Jung Woo , Kim Gi-Woo , Choi Seung-Bok
Published: October 2018

Over the last two decades, smart materials have received significant attention over a broad range of engineering applications because of their unique and inherent characteristics for actuating and sensing aspects. In this review article, recent research works on various robots, medical devices and rehabilitation mechanisms whose main functions are activated by smart materials are introduced and discussed. Among many smart materials, electro-rheological fluids, magneto-rheological fluids, and shape memory alloys are considered since there are mostly appropriate application candidates for the robot and medical devices. Many different types of robots proposed to date, such as parallel planar robots, are investigated focusing on design configuration and operating principles. In addition, specific mechanism and operating principles of medical devices and rehabilitation systems are introduced and commented in terms of practical realization.
Fabrication Process and Performance Analysis of CSP LED Filaments with a Stacked Package Design
Authors: Jiang Nan , Zou Jun , Zheng Changran , Shi Mingming , Li Wenbo , Liu Yiming , Guo Bin , Liu Jerry , Liu Herry , Yin Xavier
Published: October 2018

This article presents a chip-scale package (CSP) based filament light-emitting diodes (LEDs) with a stacked-type structure and a segmented-type luminescence design for higher luminous efficiency and better electrical stability. The innovation strategy improves the luminous efficiency by 7.69% and 18.97% than the traditional dispensing packaged LED filament when the current is at 30 mA and 210 mA, respectively, and reduces the use of red phosphors and green phosphors by 66.7% and 26.2%, respectively. With the increase of the current, the luminous efficiency variations of the stacked-packaged filament are lower than that of the traditional dispensing packaged filament. Moreover, the color temperature of the filament is no longer determined by the calculation of the ratio of various phosphors. The stacked structure and the segmented design can help us to adjust the specified color temperature quickly by changing the proportion and position of the blue chips and the red CSP LEDs.
Upper Tropospheric Water Vapor Transport from Indian to Sahelian Regions
Authors: Sy Abdoulaye , Diop Bouya , Van Baelen Joël , Duroure Christophe , Gour Yahya , Baray Jean-Luc
Published: October 2018

We present a study of upper tropospheric westward transport of air masses coming from the Indian monsoon zone over the period 1998–2008. The objective is to characterize upper tropospheric transport of water vapor from the Indian to Sahelian regions, and to improve the understanding of the dynamical mechanisms that govern water vapor variations in West Africa and the interconnections between India and the Sahel, focusing on the direct role of the Indian monsoon region on Sahel tropospheric water vapor and precipitation. The calculations of forward trajectories with LACYTRAJ (LACY TRAJectory code) and humidity fluxes show that a substantial part (40 to 70% at 300 hPa) of trajectories coming from the upper troposphere of the monsoon region crossed the Sahelian region in a few days (3–14 days), and water vapor fluxes connecting these two regions are established when the Indian monsoon begins at latitudes higher than 15° N in its south–north migration. The intensity and orientation of water vapor fluxes are related to the tropical easterly jet, but they are from the east above the high convection zones. Between 1998 and 2008, these fluxes between the 500–300 hPa pressure levels are associated with precipitation in Sahel only if they are from the east and with an intensity exceeding 8 kg·(m·s)−1.
Incorporation of Numerical Plume Rise Algorithms in the Lagrangian Particle Model LAPMOD and Validation against the Indianapolis and Kincaid Datasets
Authors: Bellasio Roberto , Bianconi Roberto , Mosca Sonia , Zannetti Paolo
Published: October 2018

This paper describes the methodology used to incorporate two numerical plume rise algorithms, one by Janicke and Janicke and another by Webster and Thomson, into the Lagrangian particle model LAPMOD. LAPMOD is fully interfaced with the diagnostic meteorological model CALMET, which is part of the widely used CALPUFF modeling system. LAPMOD can also use the meteorological input files produced with the AERMET meteorological processor of the US-EPA recommended model AERMOD. This paper outlines the theory behind the two plume rise algorithms and the details of their implementation in LAPMOD. The paper also provides the results of the evaluation of LAPMOD and its included plume rise algorithms against the well-known Indianapolis and Kincaid SF6 and SO2 field studies and tracer experiments. The performance of LAPMOD is successfully evaluated with the Model Evaluation Kit and compared with that of other air quality models.
Constrained Optimization-Based Extreme Learning Machines with Bagging for Freezing of Gait Detection
Authors: Haider Shah Syed Waqas , Iqbal Khalid , Riaz Ahmad Talal
Published: October 2018

The Internet-of-Things (IoT) is a paradigm shift from slow and manual approaches to fast and automated systems. It has been deployed for various use-cases and applications in recent times. There are many aspects of IoT that can be used for the assistance of elderly individuals. In this paper, we detect the presence or absence of freezing of gait in patients suffering from Parkinson’s disease (PD) by using the data from body-mounted acceleration sensors placed on the legs and hips of the patients. For accurate detection and estimation, constrained optimization-based extreme learning machines (C-ELM) have been utilized. Moreover, in order to enhance the accuracy even further, C-ELM with bagging (C-ELMBG) has been proposed, which uses the characteristics of least squares support vector machines. The experiments have been carried out on the publicly available Daphnet freezing of gait dataset to verify the feasibility of C-ELM and C-ELMBG. The simulation results show an accuracy above 90% for both methods. A detailed comparison with other state-of-the-art statistical learning algorithms such as linear discriminate analysis, classification and regression trees, random forest and state vector machines is also presented where C-ELM and C-ELMBG show better performance in all aspects, including accuracy, sensitivity, and specificity.
A Standardized Collagen-Based Scaffold Improves Human Hepatocyte Shipment and Allows Metabolic Studies over 10 Days
Authors: Ruoß Marc , Häussling Victor , Schügner Frank , Olde Damink Leon H. H. , Lee Serene M. L. , Ge Liming , Ehnert Sabrina , Nussler Andreas K.
Published: October 2018

Due to pronounced species differences, hepatotoxicity of new drugs often cannot be detected in animal studies. Alternatively, human hepatocytes could be used, but there are some limitations. The cells are not always available on demand or in sufficient amounts, so far there has been only limited success to allow the transport of freshly isolated hepatocytes without massive loss of function or their cultivation for a long time. Since it is well accepted that the cultivation of hepatocytes in 3D is related to an improved function, we here tested the Optimaix-3D Scaffold from Matricel for the transport and cultivation of hepatocytes. After characterization of the scaffold, we shipped cells on the scaffold and/or cultivated them over 10 days. With the evaluation of hepatocyte functions such as urea production, albumin synthesis, and CYP activity, we showed that the metabolic activity of the cells on the scaffold remained nearly constant over the culture time whereas a significant decrease in metabolic activity occurred in 2D cultures. In addition, we demonstrated that significantly fewer cells were lost during transport. In summary, the collagen-based scaffold allows the transport and cultivation of hepatocytes without loss of function over 10 days.
The Effect of Ethanol on Telomere Dynamics and Regulation in Human Cells
Authors: Harpaz Tomer , Abumock Heba , Beery Einat , Edel Yonatan , Lahav Meir , Rozovski Uri , Uziel Orit
Published: October 2018

Telomeres (TLs) protect chromosome ends from chromosomal fusion and degradation, thus conferring genomic stability, and play crucial roles in cellular aging and disease. Recent studies have found a correlation between environmental, physiological and even mental stresses on TL dynamics in humans. However, the causal relationship between stress and TL length and the molecular mechanisms underlying that relationship are far from being understood. This study describes the effect of moderate concentrations of ethanol, equivalent to social drinking, on human TL dynamics and partially elucidates the mechanism mediating this effect. The exposure of Immortalized human foreskin fibroblast, primary human foreskin fibroblast and human hepatocellular carcinoma cells to 25 mM ethanol for one week moderately shortened telomeres in all cells. Similar TL shortening was obtained following cells’ exposure to 25 µM acetaldehyde (AcH) and to a much lower extent after exposure to 4-methylpyrazolean, an inhibitor of alcoholdehydrogenase, suggesting that AcH plays a key role in ethanol-dependent telomere shortening. Telomerase activity was not involved in this effect. TRF2 and several TRF2 binding proteins increased their binding to TLs after ethanol treatment, implying their involvement in this effect. The methylation status of several sub-telomeric regions increased in response to EtOH exposure. Gene expression profiling showed distinct patterns in cells treated with EtOH and in cells recovered from EtOH. In addition to cellular ageing, the described telomere shortening may contribute to the carcinogenic potential of acute alcohol consumption; both are associated with the shortening of TLs and provide new insights regarding the moderate consumption of alcohol referred to as “social drinking.”
Molecularly Targeted Therapy for Neuroblastoma
Authors: Greengard Emily G.
Published: October 2018

Neuroblastoma is the most common extra-cranial solid tumor encountered in childhood and accounts for 15% of pediatric cancer-related deaths. Although there has been significant improvement in the outcomes for patients with high-risk disease, the therapy needed to achieve a cure is quite toxic and for those that do experience a disease recurrence, the prognosis is very dismal. Given this, there is a tremendous need for novel therapies for children with high-risk neuroblastoma and the molecular discoveries over recent years provide hope for developing new, less toxic, and potentially more efficacious treatments. Here I discuss many of the molecular aberrations identified thus far in neuroblastoma, as well as the agents in development to target these changes. The progress made in both the preclinical arena and in early phase drug development provide much promise for the future of precision medicine in neuroblastoma.
The Definition and Software Performance of Hashstream, a Fast Length-Flexible PRF
Authors: Krovetz Ted
Published: October 2018

Two of the fastest types of cryptographic algorithms are the stream cipher and the almost-universal hash function. There are secure examples of each that process data in software using less than one CPU cycle per byte. Hashstream combines the two types of algorithms in a straightforward manner yielding a PRF that can both consume inputs of and produce pseudorandom outputs of any desired length. The result is an object useful in many contexts: authentication, encryption, authenticated encryption, random generation, mask generation, etc. The HS1-SIV authenticated-encryption algorithm—a CAESAR competition second round selection—was based on Hashstream and showed the promise of such an approach by having provable security and topping the speed charts in several test configurations.