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Interpretation of GPR Field Data by Using Forward Modeling ., Arisona; Mohd Noordin, Mohd Nawawi; J, Safani; Safiuddin, L.O.
International Journal of Science, Engineering, and Sustainable Technology (IJSESTech) Vol 1, No 1 (2014)
Publisher : International Journal of Science, Engineering, and Sustainable Technology (IJSESTech)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (12.947 KB)

Abstract

The forwad modeling using the Reflex software of ground penetrating radar (GPR) to  minimize misinterpretation in the identification of subsurface material GPR data has been carried out.  The misinterpretation may be caused by the multple and noise due to non-ideal condition of materials beneath the Earth surface. By forwad modeling, the multiple and noise can be reduced, that is by taking the dominant material as homogeneous or ideal condition. A profile/cross section model of the soil layer, the absorption properties of electromagnetic waves, is considered. The result showed that the response given through the forward modeling approached the lithology form of gold quartz vein with a slope of  600. Comparison to a field model shows a good accuracy of the forward modeling.
Evaluation Study of Boundary and Depth of the Soil Structure for Geotechnical Site Investigation using MASW Arisona, A.; Nawawi, Mohd; Khalil, Amin E.; Nuraddeen, U K; Hariri, Mohd; Fathi, M A
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 1 (2017): JGEET Vol 02 No 01 : March (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1158.181 KB) | DOI: 10.24273/jgeet.2017.2.1.21

Abstract

This study reviews the correlation between the experimental Rayleigh dispersion curve and the Vp & Vs ground model versus depth. Six samples of stations A , B , C , D ,  E  and  F  were used in the experiment.The geophone spacing used was set 1 m and total length of each line was 23 m. The result shows positive significance (best fit) of R2 that ranges from 0.80 to 0.90. The fk (frequency-wave number method) dispersion curves analysis confirmed that the soil structure investigated is divided into three zones: (1) Unsaturated soil zone (clay soil), in which the layer is dominated by soil with typically alluvial clayey silt and sand. The Vp ranges from 240 m/s to 255 m/s at a depth of 2 to 8 m. (2) The intermediate zone (stiff soil), in which the layer is dominated by sand, silt, clayey sand, sandy clay and clay of low plasticity. This structure is interpreted as partially saturated soil zone, the soil is typically very dense. It contains soft rock typically fill with cobble, sand, slight gravel and highly weathered at depth of 18 to 30 m with Vp of  255 to 300 m/s. (3) Saturated soil zone at a depth of  8 to 18 m with Vp of 300 to 390 m/s. There is a very good agreement between wave-number (k) and phase velocity (Vw)  produced. Both the two parameters shows similar pattern in the topsoil and subsurface layer, which constitute boundary field of soil structure. Moreover, relationship between phase velocity versus wave-length shows best fit of model from inversion with measured value (observed) in  implementation of the boundary and depth of each layer.
Evaluation Study of Boundary and Depth of the Soil Structure for Geotechnical Site Investigation using MASW A. Arisona; Mohd Nawawi; Amin E. Khalil; U K Nuraddeen; Mohd Hariri; M A Fathi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 2 No. 1 (2017): JGEET Vol 02 No 01 : March (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1158.181 KB) | DOI: 10.24273/jgeet.2017.2.1.21

Abstract

This study reviews the correlation between the experimental Rayleigh dispersion curve and the Vp & Vs ground model versus depth. Six samples of stations A , B , C , D , E and F were used in the experiment.The geophone spacing used was set 1 m and total length of each line was 23 m. The result shows positive significance (best fit) of R2 that ranges from 0.80 to 0.90. The fk (frequency-wave number method) dispersion curves analysis confirmed that the soil structure investigated is divided into three zones: (1) Unsaturated soil zone (clay soil), in which the layer is dominated by soil with typically alluvial clayey silt and sand. The Vp ranges from 240 m/s to 255 m/s at a depth of 2 to 8 m. (2) The intermediate zone (stiff soil), in which the layer is dominated by sand, silt, clayey sand, sandy clay and clay of low plasticity. This structure is interpreted as partially saturated soil zone, the soil is typically very dense. It contains soft rock typically fill with cobble, sand, slight gravel and highly weathered at depth of 18 to 30 m with Vp of 255 to 300 m/s. (3) Saturated soil zone at a depth of 8 to 18 m with Vp of 300 to 390 m/s. There is a very good agreement between wave-number (k) and phase velocity (Vw) produced. Both the two parameters shows similar pattern in the topsoil and subsurface layer, which constitute boundary field of soil structure. Moreover, relationship between phase velocity versus wave-length shows best fit of model from inversion with measured value (observed) in implementation of the boundary and depth of each layer.
Assessment of Microgravity Anomalies of Soil Structure for Geotechnical 2D Models Arisona Arisona; Mohd Nawawi; Amin E. Khalil; Abdullahi Abdulrahman
Journal of Geoscience, Engineering, Environment, and Technology Vol. 3 No. 3 (2018): JGEET Vol 03 No 03 : September (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (840.04 KB) | DOI: 10.24273/jgeet.2018.3.3.2058

Abstract

A microgravity investigation on bedrock topography was conducted at Maluri Park in Kuala Lumpur, Malaysia. The study characterized the subsurface structure to delineate soil structure for the geotechnical application. Cross-section modelling of the residual anomaly generated the Maluri Bouguer Anomaly model for test site. The 2D microgravity models produced the contour map, displaying the characterization due to density contrast in rock types while mapping the subsurface geological structure at different depths. Moreover, a synthetic model was initiated with the assumption of lateral distance on the left and right sides taken at 50 m and a depth of 60 m. The results of modeling confirmed that the soil and rock type composition on models test site, i.e: topsoil (1.1 g/cm3), soil (1.8 g/cm3), clay (1.63 g/cm3), gravel (2.0 g/cm3), sand (1.7 g/cm3), shale (2.40 g/cm3), sandstone (2.76 g/cm3) and limestone (2.9 g/cm3). The 2D gravity synthetic model show a good match with the observed microgravity data.
Characteristics of Chromite Deposits at North Kabaena District, Bombana Regency, Southeast Sulawesi Province, Indonesia Hasria; Masri; Suryawan Asfar; Arisona; Ali Okto; La Ode Restele; La Ode Ngkoimani; Rika Yustika
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 2 (2021): JGEET Vol 06 No 02 : June (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.2.6424

Abstract

The study area is located in North Kabaena District, Bombana Regency, Southeast Sulawesi. This paper is aimed to describe characacristics of chromite deposits. This study is conducted in three stages, three stages including desk study, field work and laboratory analysis. Desk study mainly covers literature reviews. Field work includes mapping of surface geology and sampling of representative rocks types. Laboratory analysis includes the petrologic observation of handspecimen samples, petrographic analysis of the thin section and ore microscopy for polished section. The results of petrographic analysis show that olivine minerals are generally replaced by minerals orthopyroxene and has been alterated by lizardite type serpentine veins with a fractured structure. The mineral olivine is also replaced by the mineral chrysotile as a secondary mineral with a fibrous structure. Based on ore microscopy analysis show that chromite has generally experienced a lateritification process and has been replaced by magnetite, hematite and geotite minerals. Chromite has experience process of weathering and alteration from its source rock caused by tectonics that occurred in the study area. The results shows that the characteristics of chromite deposits in North Kabaena District Chromite deposits has generally encountered in peridotite rock which have a grain size of 0.3-20 cm. Furthermore, chromite deposits in the study area are also encountered in podiform deposits, distributed locally and shows podiform to tubular shape with the dimensions of 30-60cm.
A Preliminary Study of Analysis and Characterization of Briquettes Quality on Asphalt Bitument from Buton Island as Alternative Fuel Arisona .; Anas M.; Musta C.
Jurnal Aplikasi Fisika Vol 10, No 1 (2014): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (873.681 KB)

Abstract

In this study, the material  used is asphal bitument then made briquettes weighing 10 gram in each sample. In making the briquettes used a cylindrical mod with a diameter of 2.5 cm and a height of 7 cm. After compactioned the briquettes produced dried first. Drying of briquetttes made using free air during 4 days to reduce the water content contained in the briquettes. Furthermore, the heat test and proximat analysis (i.e : analysis of water content, ash content, volatile matter, fixed carbon, and density). Calorific test and proximate analysis aims to determine the  quality of asphal bitument briquettes that will be used as a fuel alternative. This results of this study indicate that the asphalt briquettes have analyzed proximet variation i.e.: water content between 1.23% -7.26% ; volatile matter : 16,797%-32,02% ; ash content : 48.96%-61.35% ; fixed carbon : 11.76%-33.36 ; and density : 1,22 g/cm3-1.92 g/cm3. Asphalt briquettes obtained has a calorific value variation between 1902.39 kcal/kg- 3407.82 kcal/kg, with the largest being  the calorific  value of  cashew charcoal with variation of 30 %. This provides an initial indication for the use of asphalt bitument briquettes as alternative fuel and also provide information that adhesive such as cashew charcoal can be used as aggregate  to strengthen the adhesion of  asphalt on the pavement layers.
PENERAPAN PERANGKAT PEMBELAJARAN SAINS BERBASIS CTL dan E-LEARNING di SD 01 POASIA KENDARI SEBAGAI MODEL PRAKTIKUM PEMBELAJARAN BAGI MAHASISWA P.MIPA FKIP UNIVERSITAS HALU OLEO Arisona - -; Yuris - -
Gema Pendidikan Vol 21, No 1 (2014): JURNAL GEMA PENDIDIKAN VOLUME 21 NO 1 TAHUN 2014
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.717 KB) | DOI: 10.1234/gapend.v21i1.2792

Abstract

Telah dilakukan penelitian Penerapan perangkat pembelajaran berbasis CTL (Contekstual Teaching And Learning) dan E-Learning untuk meningkatkan kualitas pembelajaran Sains di SD 01 Poasia sebagai Sekolah Unggulan (sebelumnya Sekolah Rintisan Bertaraf Internasional) di Kota Kendari, dengan  menerapkan Four-D Model dengan beberapa adaptasi kerangka berfikir yang sesuai. Instrumen yang digunakan adalah lembar observasi, pengelolaan pembelajaran dan persepsi siswa terhadap penerapan perangkat pembelajaran. Data-data dianalisis dengan statistik deskriptif kualitatif yang dapat memberikan informasi tentang efektivitas dan keterbacaan perangkat pembelajaran, serta kemampuan guru Sains dalam mengelola pembelajaran sesuai yang diinginkan KTSP.  Berdasarkan hasil deskriptif terhadap hasil belajar yang diperoleh siswa  kelas IV & V  SD Negeri 1 Poasia sebelum dan sesudah penerapan perangkat pembelajaran, nampak bahwa hasil belajar siswa cenderung mengalami peningkatan rata-rata. Hal ini nampak pada nilai rata-rata siswa kelas IV melalui pre-test sebesar 46,05  dimana siswa yang tuntas sebesar 7,89 atau perolehan nilai siswa sama atau lebih besar dari nilai 65, sedang pada post test nilai rata-rata menjadi 75,53  dengan ketuntasan belajar secara individu menjadi sebesar 84,21 % atau terjadi peningkatan rata-rata penguasaan konsep/hasil belajar siswa sebesar 64.53 %.; sedangkan rata-rata pre-test siswa kelas V sebesar 59,36 dimana siswa yang sudah tuntas atau perolehan nilai siswa sama atau lebih besar dari skor 65 sebanyak 35,29%, dan pada pada post test nilai rata-rata menjadi 73,15 dengan ketuntasan belajar secara individu menjadi sebesar 79% atau terjadi peningkatan rata-rata penguasaan konsep/hasil belajar Sains siswa sebesar 23,23 %. Hasil penelitian ini dapat dijadikan dasar pengambilan kebijakan bagi Dinas Diknas Kota Kendari untuk mencoba menerapkan perangkat pembelajaran tersebut pada sekolah lain dalam lingkup Kota Kendari.  Kata Kunci :CTL ,E-Learning,Perangkat Pembelajaran.
Fasies Batuan Metamorf Daerah Wumbubangka, Kecamatan Rarowatu Utara, Kabupaten Bombana, Provinsi Sulawesi Tenggara hasria hasria; Suryawan Asfar; Adriyansyah Adriyansyah; Masri Masri; Muliddin Muliddin; Arisona Arisona; Al Firman; Ali Okto; Laode M Golok Jaya
Jurnal Geomine Vol 9, No 1 (2021): Edisi April 2021
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v9i1.896

Abstract

Daerah penelitian terletak di daerah Wumbubangka, Kecamatan Rarowatu Utara, Kabupaten Bombana, Provinsi Sulawesi Tenggara.Penelitian ini bertujuan untuk mengindentifikasi jenis batuan metamorf dan fasies metamorfisme yang terdapat di daerah penelitian. Metode penelitian yang digunakan terdiri dari studi pustaka, pengambilan sampel di lapangan,  analisis labroratorium serta interpretasi data.  Hasil penelitian menunjukkan bahwa litologi daerah penelitian umumnya terdiri dari sekis mukovit dan marmer. Sekis muskovit  memiliki tekstur berupa lepidoblastik, struktur schistose, sedangkan marmer memiliki tekstur sisa dan struktur non foliasi. Adapun komposisi  mineralnya terdiri dari kalsit, klorit, kuarsa, muskovit, biotit, glukofan dan mineral opak. Adapunfasies metamorfime batuan metamorf di daerah penelitianadalah fasies sekis hijau yang dicirikan dengan kehadiran mineral muskovit, klorit, biotit, kalsit dan kuarsa.Fasies sekis hijau ini diinterpretasikan terbentuk pada temperatur 300°C-500°C.
Edukasi Mitigasi Bencana Banjir Berbasis Komunitas Masyarakat di Kelurahan Wundumbatu Kecamatan Poasia Kota Kendari, Provinsi Sulawesi Tenggara Hasria Hasria; Arisona Arisona; Irawati Irawati; Syamsul Razak Haraty; Ali Okto
Jurnal Abdidas Vol. 3 No. 3 (2022): June, Pages 355-611
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdidas.v3i3.603

Abstract

Kelurahan Wundumbatu termasuk dalam Kecamatan Poasia yang berada di Kota Kendari, Provinsi Sulawesi Tenggara. Wilayah ini berada pada pedataran rendah dan bersebelahan dengan sungai Anduonohu yang sering mengalami banjir pada musim hujan karena luapan air sungai. Adapun tujuan yang dan pengabdian Program Kemitraan Masyarakat (PKM) ini adalah untuk meningkatkan kesiapsiagaan masyarakat dalam menghadapi bencana banjir. Metode yang digunakan pada pengabdian ini adalah menggunakan aplikasi zoom, namun pada proses pendirian posko relawan dan pembuatan sistem peringatan dini, dilakukan langsung di lapangan dengan tetap mengacu pada protokol kesehatan. Hasil yang diperoleh pada kegiatan pengabdian PKM adalah telah memberikan dampak positif yakni mengedukasi masyarakat sehingga memperoleh ilmu dan pengalaman tentang cara memitigasi bencana banjir. Selain itu, juga dihasilkan adanya peta resiko bencana banjir wilayah kelurahan, pembentukan posko relawan masyarakat dalam rangka kegiatan aksi untuk penguatan kesiapsiagaan dan penguatan kelola risiko serta adanya sistem peringatan dini banjir yang dapat mendukung terbentuknya Kelurahan Wundumbatu sebagai kelurahan tanggap dan tangguh terhadapnbencana banjir dengan tetap mengacu pada protokol kesehatan yang dikeluarkan oleh pemerintah RI terkait Covid-19.
Penanaman Mangrove di Pantai By Pass Kolaka untuk Membangun Karakter Peduli Lingkungan Pesisir dan Pantai Mahasiswa Andri Estining Sejati; La Ode Nursalam; L.M. Ruspan Takasi; Eko Harianto; Sakka Hasan; Sitti Kasmiati; Arisona Arisona
Lumbung Inovasi: Jurnal Pengabdian kepada Masyarakat Vol. 7 No. 3 (2022): September
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/linov.v7i3.789

Abstract

Lingkungan pesisir dan pantai terjaga dengan adanya tanaman mangrove. Abrasi yang mengenai jalan by pass Kolaka yang berhadapan dengan Teluk Bone dapat direduksi oleh mangrove sebagai tanggul alami. Mahasiswa S1 Pendidikan Geografi FKIP USN Kolaka perlu mempraktekkan upaya penanaman mangrove sebagai upaya untuk untuk meningkatkan kepedulian lingkungan pesisir dan pantai. Pelaksanaan penanaman melibatkan 15 mahasiswa, 5 instruktur, dan 12 panitia yang merupakan tim pengabdian kepada masyarakat penanaman pohon mangrove. Kegiatan dilaksanakan dengan membersihkan lingkungan pesisir dan pantai dari sampah, menanam, dan merawat 200 pohon mangrove. Mahasiswa merasakan manfaat dalam hal mengasah karakter peduli lingkungan pesisir dan pantai dengan melakukan praktek langsung dan mengkaitkan dengan mata kuliah terkait. Kegiatan dapat dijadikan role model dan kegiatan rutin bagi perusahaan yang memiliki dampak kepada lingkungan sekitar. Mangrove Planting in The Kolaka By Pass Beach for Construct Students Coastal and Beach Environment Awareness Abstact The coastal and coastal environment is maintained by the presence of mangrove plants. Abrasion on the Kolaka by-pass road facing Bone Bay can be reduced by mangroves as natural embankments. S1 students of Geography Education FKIP USN Kolaka need to practice mangrove planting efforts to increase awareness of the coastal and beach environment. The implementation of the planting involved 15 students, five instructors, and 12 committees who were a community service team for planting mangrove trees. Activities carried out by cleaning the coastal and beach environment from garbage, planting, and caring for 200 mangrove trees. Students feel the benefits of honing the character of caring for the coastal and beach environment by doing direct practice and linking it with related courses. Activities can be used as role models and routine activities for companies that impact the surrounding environment.