scholarly journals IDENTIFICATION OF THE SLIPS SURFACES USING RESISTIVITY GEOELECTRICAL METHOD IN LANDSLIDE PRONE AREAS IN PADANG AND AGAM REGENCY OF WEST SUMATERA

2019 ◽  
Author(s):  
Akmam Akmam ◽  
Harman Amir; ◽  
Amali Putra
Keyword(s):  
Cross Section ◽  
Surface Characteristics ◽  
Inversion Method ◽  
Landslide Risk ◽  
Resistivity Method ◽  
Topographic Slope ◽  
True Resistivity ◽  
West Sumatra ◽  
Landslide Mitigation ◽  
Steep Topography

West Sumatra has wavy and steep topography. Beside, West Sumatra has topographic slope more than 30, it also has high rainfall. This condition makes this area has a high potential of landslide risk. This problem needs to get a scientific study of how the surface characteristics of the landslide field as a preliminary study of landslide mitigation in West Sumatera. Information on the characteristics of landslide surfaces in landslide prone areas in West Sumatra has not been widely available. Based on the above reason, research has been done to find out the depth and slope of the landslide surface in Padang and Agam Regency of West Sumatra. This explorative research uses resistivity method using Ares equipment set (Cheko production). The apparent resistivity data is interpreted using the optimized optimized least-squares smoothnessconstrain inversion method in order to obtain true resistivity 2D cross-section. The layer thickness and the slope of landslide surface the targeted area was calculated base on true resistivity 2D cross-section that synchronized with topographic data. The results showed that the average both depth and angle of the landslide surfaces in Agam regency of West Sumatra were 41degrees and 16.5 meters respectively. The average both depth and angle of the landslide surfaces in Padang were 38 degree and 12.5 meters respectively. The rock that acts as a landslide surfaces is Clay

Identifikasi Bidang Gelincir Menggunakan Metoda Geolistrik Tahanan Jenis Daerah Rawan Longsor Di Kota Padang Dan Kabupaten Agam Sumatera Barat

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Akmam Akmam ◽  
Harman Amir ◽  
Amali Putra
Keyword(s):  
Cross Section ◽  
Surface Characteristics ◽  
Least Square ◽  
Inversion Method ◽  
Landslide Risk ◽  
Resistivity Method ◽  
Topographic Slope ◽  
True Resistivity ◽  
West Sumatra ◽  
Landslide Mitigation

Sumatera Barat memiliki topografi bergelombang dan curam. Sumatera Barat disamping memiliki kemiringan topografi lebih dari 30 derajat, juga memiliki curah hujan yang tinggi. Kondisi tersebut menjadikan kawasan ini memiliki potensi resiko longsor yang cukup tinggi. Masalah ini perlu ditanggulangi dengan melakukan penelitian tentang bagaimana karakteristik permukaan bidang gelincir sebagai studi pendahuluan mitigasi longsor di Sumatera Barat. Informasi tentang karakteristik bidang lincir di daerah rawan longsor di Sumatera Barat belum banyak tersedia. Dengan alasan di atas, dilakukan penelitian yang bertujuan untuk mengetahui kedalaman dan kemiringan bidang gelincir di Kota Padang dan Kabupaten Agam Sumatera Barat. Penelitian eksploratif ini menggunakan metode resistivitas dengan peralatan Ares (produksi Cheko). Data resistivitas semu diinterpretasikan menggunakan metode inversi Least-Square yang telah dioptimalkan untuk mendapatkan penampang 2D resistivitas sesungguhnya. Ketebalan dan kemiringan permukaan bidang gelincir daerah target dihitung berdasarkan penampang 2D resistivitas sesungguhnya dengan bantuan data topografi. Penelitian menunjukkan bahwa rata-rata kedalaman dan sudut permukaan bidang gelincir di Kabupaten Agam Sumatera Barat masing-masing adalah 410 dan 16,5 meter. Rata-rata kedalaman dan sudut kemiringan permukaan bidang lincir di Padang masing-masing 380 dan 12,5 meter. Batuan yang berperan sebagai permukaan bidang gelincir adalah Clay.   West Sumatra has wavy and steep topography. Beside, West Sumatra has topographic slope more than 30, it also has high rainfall. This condition makes this area has a high potential of landslide risk. This problem needs to get a scientific study of how the surface characteristics of the landslide field as a preliminary study of landslide mitigation in West Sumatera. Information on the characteristics of landslide surfaces in landslide prone areas in West Sumatra has not been widely available. Based on the above reason, research has been done to find out the depth and slope of the landslide surface in Padang and Agam Regency of West Sumatra. This explorative research uses resistivity method using Ares equipment set (Cheko production). The apparent resistivity data is interpreted using the optimized optimized least-squares smoothness-constrain inversion method in order to obtain true resistivity 2D cross-section.  The layer thickness and the slope of landslide surface the targeted area was calculated base on true resistivity 2D cross-section that synchronized with topographic data. The results showed that the average both depth and angle of the landslide surfaces in Agam regency of West Sumatra were 41 degree and 16.5 meters respectively. The average both depth and angle of the landslide surfaces in Padang were 38 degree  and 12.5 meters respectively. The rock that acts as a landslide surfaces is Clay.

Profil Penyakit Malaria Di Rumah Sakit Islam Siti Rahmah Padang Tahun 2018

2020 ◽  
Vol 2 (2) ◽  
pp. 08-15
Author(s):  
Rahma Triyana ◽  
Salmi Salmi
Keyword(s):  
Observational Study ◽  
Frequency Distribution ◽  
Cross Section ◽  
Laboratory Tests ◽  
Age Group ◽  
Normal Range ◽  
Cross Sectional ◽  
West Sumatra ◽  
Severity Of The Disease

Malaria is one of the health problems in Indonesia, especially West Sumatra. Determination of the description of Malaria disease in an area is needed to determine the spread and severity of the disease. This study aims to determine the frequency distribution according to age, sex and place of residence, description of the types of Plasmodium causes of Malaria and hematological features in Malaria patients at Siti Rahmah Padang Hospital in 2018. This type of research is a descriptive observational study with an approach or design cross section (cross sectional). The frequency distribution of Malaria sufferers in Siti Rahmah Padang Hospital in 2018 according to the highest age was in the age group 21-30 years as many as 28 cases (36.8%), the highest sex among men was 46 (60.5%) and the highest number of residences was found in Koto Tangah sub-district there were 31 cases (40.8%). The type of Plasmodium found in Malaria cases in Siti Rahmah Padang Hospital in 2018 was P. vivax (73 cases (96.05%)) and P. falciparum (3 cases (3.95%)). The results of laboratory tests on Hb, hematocrit, platelet and leukocyte levels in Malaria positive patients in Siti Rahmah Padang Hospital in 2018 were in the normal range.

Profil Penyakit Malaria di Rumah Sakit Islam Siti Rahmah Padang Tahun 2018

2020 ◽  
Vol 2 (2) ◽  
pp. 08-15
Author(s):  
Rahma Triyana Y ◽  
Salmi Salmi
Keyword(s):  
Observational Study ◽  
Frequency Distribution ◽  
Cross Section ◽  
Laboratory Tests ◽  
Age Group ◽  
Normal Range ◽  
Cross Sectional ◽  
West Sumatra ◽  
Severity Of The Disease

Malaria is one of the health problems in Indonesia, especially West Sumatra. Determination of the description of Malaria disease in an area is needed to determine the spread and severity of the disease. This study aims to determine the frequency distribution according to age, sex and place of residence, description of the types of Plasmodium causes of Malaria and hematological features in Malaria patients at Siti Rahmah Padang Hospital in 2018. This type of research is a descriptive observational study with an approach or design cross section (cross sectional). The frequency distribution of Malaria sufferers in Siti Rahmah Padang Hospital in 2018 according to the highest age was in the age group 21-30 years as many as 28 cases (36.8%), the highest sex among men was 46 (60.5%) and the highest number of residences was found in Koto Tangah sub-district there were 31 cases (40.8%). The type of Plasmodium found in Malaria cases in Siti Rahmah Padang Hospital in 2018 was P. vivax (73 cases (96.05%)) and P. falciparum (3 cases (3.95%)). The results of laboratory tests on Hb, hematocrit, platelet and leukocyte levels in Malaria positive patients in Siti Rahmah Padang Hospital in 2018 were in the normal range.

ANALISIS KONDISI BAWAH PERMUKAAN DAN RISIKO BENCANA TANAH LONGSOR UNTUK ARAHAN PENATAAN KAWASAN DI DESA TENGKLIK KECAMATAN TAWANGMANGU KABUPATEN KARANGANYAR JAWA TENGAH

2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Heru Sri Naryanto
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Regional Planning ◽  
Rainy Season ◽  
Great Influence ◽  
Landslide Risk ◽  
Potential Hazard ◽  
Volcanic Deposits ◽  
Steep Topography ◽  
Steep Slopes

Karanganyar District is a hilly area with steep slopes, rock constituent of young volcanic deposits of Lawu Volcano products, thick soil and relatively high rainfall, so it is potential for large landslides in this region. The landuse in the Karanganyar District including the Tengklik Village is generally dominated by rice fields, seasonal gardens and settlements. Plantation made up in areas with steep topography has great influence on erosion and landslides. Similarly, many settlements are built on a slope so that the area is very vulnerable to the threat of landslides. In the rainy season landslides are common. The potential hazard of landslidesoccurred in 14 sub districts in Karanganyar District. Large landslides have occurred in Karanganyar on December 26, 2007 which claimed the lives of 62 people, with the greatest victims were in the Ledoksari Village, Tawangmangu. The Tengklik Village has already experienced creep type landslides, which have destroyed settlements, roads, seasonalgardens and all existing infrastructure in the area. In order to do the proper handling and anticipation of a catastrophic landslide, a variety of technological applications landslides using geographic information system (GIS) was then carried out, to detect the configuration of 2D geoelectrical subsurface prone areas for landslide risk study and regional planning.

Application of Plane Fractal Geometry to Adhesion Strength of Thermal Sprayed Coatings

2000 ◽  
Author(s):  
S. Amada ◽  
T. Hirose
Keyword(s):  
Cross Section ◽  
Fractal Geometry ◽  
Surface Characteristics ◽  
Ceramic Coatings ◽  
Average Surface Roughness ◽  
Roughened Surface ◽  
Fractal Characteristics ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings ◽  
Height Data

Abstract Adhesion of ceramic coatings considerably depends on the surface characteristics of blasted substrates. The roughened surfaces have two kinds of topographical characteristics, one is of their cross section and the other is of planar. The roughened surfaces is generated by angled grit-blasting process which can be expected to improve the adhesion of ceramic coatings. The topography of the roughened surfaces has fractal characteristics in their cross section and has been more effectively related to the adhesive strength of ceramic coatings than average surface roughness traditionally used. This paper presents that fractal characteristics is evaluated in the planar topography of the blasted surfaces and shows that the planar fractal characteristics is closely related adhesion of ceramic coatings. The planar fractal dimension is evaluated by SIA (Slit Island Analysis) which needs the height data on the roughened surface. Those data are obtained by a laser-microscope in confocal type.

scholarly journals PERSAMAAN PERCEPATAN TANAH MAKSIMUM GEMPA TEKTONIK UNTUK KAWASAN SUMATERA BARAT

2019 ◽  
Author(s):  
Akmam Akmam
Keyword(s):  
Physical Characteristics ◽  
Least Square ◽  
Inversion Method ◽  
Local Magnitude ◽  
Ground Acceleration ◽  
Earthquake Energy ◽  
West Sumatra ◽  
Region Data ◽  
Fundamental Research

Characteristic of earthquake in a region can be studied through its physical characteristics, such as magnitude and earthquakes energy. Energy which is produced by earthquake can be predicted from magnitude. So far, a lot of research produces different equation to predict of earthquake energy that is depending on zone of earthquake occurred. The purpose of descriptive fundamental research was to find equation for ground acceleration which is presented by local magnitude earthquake for West Sumatra region. Data sounder for research were collected from BMG Padang Panjang which was recorded from 1982 to 2008. Data are analyzed by using least square inversion method. Equation ground acceleration is log αac = 0.451Io +0.146 ML + 0.744 log ∆ - 2.644, which local magnitude is ML = 0.413I0 – 0.785 Log H + 5.334 and intensity of the earthquake in the epicenter is Io = I + 3 log (Δ/H) + 0.01 (ΔH).

scholarly journals Pharmacognostic study of Eranthemum nigrum Root DSNBK Prasanth

2017 ◽  
Vol 4 (3) ◽  
pp. 1-6
Author(s):  
Lakshmana Rao A
Keyword(s):  
Cross Section ◽  
Physicochemical Parameters ◽  
Surface Characteristics ◽  
Water Soluble ◽  
Physiochemical Properties ◽  
Physiochemical Parameters ◽  
Microscope Images ◽  
Parenchyma Cells ◽  
Powder Analysis ◽  
Xylem Fibers

Objective: To analyze the pharmacognostic characteristics and physiochemical parameters of the root of Eranthemum nigrum (E. nigrum). Methods: Microscopic characters and powder analysis had been carried out with the help of a microscope. The physiochemical properties such as loss on drying, total ash value, acid insoluble ash value, water soluble ash value, extractive values and fluorescence of E. nigrum had been performed. Results: The color, shape, size, odor, and surface characteristics were reported from the root and powdered root material of E. nigrum. Light microscope images of cross section and powdered root revealed the presence of lignified xylem fibers, xylem vessels, cork cells and parenchyma cells. Phytochemical testing confirmed the presence of steroids, alkaloids, tannins, saponins, carbohydrates, glycosides, amino acids and proteins. Physicochemical parameters such as moisture content, ash value, extractive value and fluorescent behavior of root powder have also been established. Conclusion: The morphological, microscopical and physicochemical parameter results provided in this paper may be utilized as a basis for the preparation of a monograph on E. nigrum root.

scholarly journals FAKTOR-FAKTOR YANG MEMPENGARUHI TINGKAT PENGANGGURAN DI KABUPATEN/KOTA PROVINSI SUMATERA BARAT

2015 ◽  
Vol 4 (1) ◽  
pp. 73
Author(s):  
Syaikhul Adlan ◽  
Idris Idris ◽  
Dewi Zaini Putri
Keyword(s):  
Economic Growth ◽  
Cross Section ◽  
Unemployment Rate ◽  
Educational Level ◽  
Total Population ◽  
Negative Impact ◽  
Secondary Data ◽  
Education Level ◽  
Level Of Education ◽  
West Sumatra

This study aims to determine the effect of economic growth, educational level, and the number of people on the unemployment rate on regency / city of West Sumatra during 2011- 2013. Data used in this research is secondary data, in the form of time series (2011-2013) and cross section (19 districts / cities) of West Sumatra province. The results showed: economic growth  has a negative impact and no significant effect on the unemployment rate , Level of education has a positive and significant effect on the unemployment rate ,Total population  has a positive and significant effect on the unemployment rate and Together economic growth (X1), education level (X2), and population (X3) has a significant impact on the unemployment rate (Y) in the district / city of West Sumatra province..Keyword : unemployment rate, economic growth, education level, popolation

scholarly journals Development of a Protective Coating for Evaluating the Sub-surface Microstructure of a Worn Material

2021 ◽  
Vol 69 (4) ◽  
Author(s):  
U. Pranav Nayak ◽  
Johannes Webel ◽  
Valentin Pesnel ◽  
Frank Mücklich ◽  
María Agustina Guitar
Keyword(s):  
Cross Section ◽  
Wear Track ◽  
Surface Characteristics ◽  
Electrolytic Deposition ◽  
Surface Microstructure ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Uniform Coating ◽  
Chromium Cast Iron ◽  
Worn Surface

AbstractIn the current study, electrolytic deposition using two different electrodes, copper (Cu) and nickel (Ni) was investigated with the aim of protecting the worn surface during mechanical sectioning and polishing, for a posterior examination of the sub-surface microstructure. The efficacies of the two coatings were visually assessed based on its adhesivity and the ability to protect the wear tracks of an as-cast 26% Cr high chromium cast iron (HCCI) alloy. It was observed that electrodeposition using Cu as the electrode was ineffective owing to a poor adhesivity of the coating on the HCCI surface. The coating had peeled off at several regions across the cross-section during the mechanical sectioning. On the other hand, Ni electroplating using Ni strike as the electrolyte was successfully able to protect the wear track, and the sub-surface characteristics of the wear track could be clearly visualized. A uniform coating thickness of about 8 µm was deposited after 30–40 min with the current density maintained between 1 and 5 A/dm2. The presence of the Ni coating also acted as a protective barrier preventing the ejection of the broken carbide fragments underneath the wear track.

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