scholarly journals Application of 2D resistivity method to determine serpentinite rocks in Kuta Cot Glie, Aceh Besar

2020 ◽  
Vol 10 (1) ◽  
pp. 12-16
Author(s):  
Muhammad Reyza Khalid ◽  
Fadhli Syamsudin ◽  
Nasrullah Zaini ◽  
Didik Sugiyanto
Keyword(s):  
Electrical Properties ◽  
Raw Material ◽  
Metamorphic Rocks ◽  
Geophysical Method ◽  
Resistivity Method ◽  
Ornamental Stones ◽  
Surface Models ◽  
Result Show ◽  
Aceh Province ◽  
2D Resistivity

Abstrak. Kuta Cot Glie di Aceh Besar, merupakan salah satu daerah yang memiliki potensi batuan metamorf serpentinit. Batuan ini dapat digunakan sebagai bahan baku untuk pembuatan pupuk, batu hias, dan beberapa manfaat lainnya. Penelitian ini bertujuan untuk menginterpretasi model bawah permukaan dan memperkirakan ketebalan lapisan batuan serpentinit. Metode geofisika yang digunakan adalah metode geolistrik resistivitas dengan konfigurasi Wenner-Schlumberger. Pengukuran dilakukan pada dua lintasan sepanjang 275 m untuk masing-masing lintasan dengan 56 buah elektroda dan jarak spasi setiap elektroda adalah 5 m. Prinsip metode geolistrik tersebut memanfaatkan sifat kelistrikan suatu material untuk mengetahui karakteristik material. Hasil penelitian menunjukkan bahwa nilai resistivitas adalah 50 - 150 Ωm yang diperkirakan lapisan batuan serpentinit dengan ketebalan 10 - 35 m.Abstract. Kuta Cot Glie located in Aceh Besar, Aceh Province, has a natural potential of serpentine. The metamorphic rocks used as a raw material for making fertilizer, ornamental stones, and other benefits. This research aims to interpret sub-surface models and estimate the thickness of the rock layers. The geophysical method used in this study was the resistivity geoelectric method with a Wenner-Schlumberger configuration. Measurements were carried out on two lines with 275 m for each line and the spacing of the electrode was 5m using 56 electrodes. The physical approach utilizes the electrical properties of a material to determine the characteristics of its material. The result show that the resistivity of 50 to 150 Ωm can be interpreted as serpentinite rock layers with the thickness of 10 m to 35 m.Keywords: Serpentinite, resistivity, geoelectric method, Wenner-Schlumberger configuration.

scholarly journals ROCHAS ORNAMENTAIS E DE REVESTIMENTO DE MINAS GERAIS: PRINCIPAIS OCORRÊNCIAS, CARACTERIZAÇÃO E APLICAÇÕES NA INDÚSTRIA DA CONSTRUÇÃO CIVIL

2000 ◽  
Author(s):  
Antônio Gilberto Costa ◽  
Marcos Santos Campello ◽  
Vitor Brugnara Pimenta
Keyword(s):  
New Technologies ◽  
Minas Gerais ◽  
Human Existence ◽  
Raw Material ◽  
Metamorphic Rocks ◽  
Crustal Evolution ◽  
Ornamental Stones

The knowledge on the igneous and metamorphic rocks has, besides the importance in petrogenetic terms relatedwith the crustal evolution, great importance in the applied sector. This knowledge has been allowed and enlargedthe use of these materials in the civil construction and in the architecture along the human existence, as coatingmaterial or as raw material for ornamental, artistic and utilitarian elements. In this work we tried to present thestate of the art on ornamental stones, focusing on new technologies used for their characterization.

Exploitation of Geological Resources

2021 ◽  
pp. 953-974
Author(s):  
James A. Harrell ◽  
Abdelrahman Ali Mohamed
Keyword(s):  
Sedimentary Rocks ◽  
Raw Material ◽  
Metamorphic Rocks ◽  
Nile River ◽  
Surficial Sediments ◽  
Basement Complex ◽  
Nubian Sandstone ◽  
Ornamental Stones ◽  
Sandstone Formation ◽  
Oolitic Ironstone

Nubia is well endowed with the geological resources needed to supply a succession of ancient cultures and kingdoms. Igneous and metamorphic rocks of the region’s Basement Complex provided most of the materials, including gold, copper, gemstones, and a variety of ornamental stones. Overlying the Basement Complex are sedimentary rocks and among these is the Nubian Sandstone Formation, which supplied the material used to build Nubia’s many temples and pyramids. This formation also provided the oolitic ironstone that was the raw material for Kushite iron production as well as two unusually hard varieties of sandstone—iron oxide-cemented ferricrete and quartz-cemented quartzite—that were used in buildings where extra strength was needed and also for many ornamental applications. Surficial sediments deposited by the Nile River and desert wadis were important sources of gold, gemstones, and, for ceramics, clay. A total of 117 ancient mines and quarries have been identified in Nubia with twenty-three for sandstone, seven for ornamental stones, four for quartzite, seventy-six for gold, five for copper, one each for iron and lead, and three for gemstones.

Enhanced electrical properties of BiFeO3–PbTiO3 based ceramics with suitable raw material

2019 ◽  
Vol 30 (15) ◽  
pp. 14500-14507
Author(s):  
Zhuo Yu ◽  
Jiangtao Zeng ◽  
Abdelhadi Kassiba ◽  
Liaoying Zheng ◽  
Jiangguli Peng ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Raw Material

scholarly journals PEMETAAN AKUIFER AIR TANAH DI JALAN RINGROAD KELURAHAN MALENDENG DENGAN MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS

2015 ◽  
Vol 15 (1) ◽  
pp. 33 ◽  
Author(s):  
Dewi Sedana ◽  
As’ari As’ari ◽  
Adey Tanauma
Keyword(s):  
Geophysical Method ◽  
Low Resistivity ◽  
Resistivity Method ◽  
The Earth ◽  
Groundwater Aquifers ◽  
Working Principle ◽  
Geoelectric Resistivity ◽  
Subsurface Exploration

PEMETAAN AKUIFER AIR TANAH DI JALAN RINGROAD KELURAHAN MALENDENG DENGAN MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS ABSTRAK Geolistrik merupakan salah satu metode geofisika yang dimanfaatkan dalam eksplorasi alam bawah permukaan. Prinsip kerja metode geolistrik adalah mempelajari aliran listrik di dalam bumi dan cara mendeteksinya di permukaan bumi. Penelitian ini bertujuan untuk memetakan akuifer Airtanah di Jalan Ringroad Kelurahan Malendeng berdasarkan resistivitas batuan bawah permukaan. Penelitian terdiri dari 4 titik sounding pada 1 lintasan dengan jarak setiap titik 40 meter. Hasil eksplorasi diolah dengan menggunakan software IP2WIN untuk melihat data perlapisan di bawah permukaan tanah berdasarkan nilai resistivitasnya (2D) dan pesebaran titik – titik terdapatnya akuifer Airtanah. Hasil penelitian menunjukkan bahwa akuifer Airtanah berada pada daerah yang dekat sungai yaitu pada titik 4 yang memiliki nilai resistivitas rendah kurang dari 123 Ωm. Kata kunci : Geolistrik tahanan jenis, akuifer Airtanah, software IP2WIN.   THE MAPPING OF GROUNDWATER AQUIFERS AT THE RINGROAD MALENDENG VILLAGE BY USING GEOELECTRIC RESISTIVITY METHOD ABSTRACT Geoelectric is a geophysical method that is utilized in natural subsurface exploration. The working principle of geoelectric method is to study the flow of electricity in the earth and how to detect them in the earth's surface. This study aims to map the aquifer Groundwater at the Ringroad Malendeng village based resistivity of the subsurface rocks. The study consisted of four points on 1-sounding track with the distance of each point 40 meters. Exploration results were processed using software IP2WIN to view data subsurface layering based on the value of the resistivity (2D) and  point - the point of the presence of Groundwater aquifers. The results showed that the aquifer Groundwater is the area near the river is at point 4 which has a low resistivity value of less than 123 Ωm. Keywords: Geolistrik resistivity, Groundwater aquifers, IP2WIN software.

scholarly journals The Effect of Al-Mg-Si Wire Rod Heat Treatment on Its Electrical Conductivity and Strength

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1027
Author(s):  
Beata Smyrak ◽  
Bartosz Jurkiewicz ◽  
Małgorzata Zasadzińska ◽  
Marek Gniełczyk ◽  
Patryk Jałowy
Keyword(s):  
Heat Treatment ◽  
Electrical Properties ◽  
Low Temperature ◽  
Natural Aging ◽  
Heat Treatments ◽  
Raw Material ◽  
High Temperature Heat Treatment ◽  
Mechanical And Electrical Properties ◽  
Temperature Heat ◽  
Temperature Heat Treatment

The raw material for the production of Al-Mg-Si wires is wire rods, created in the Continuus Properzi line in temper T1 (cooled after forming at an elevated temperature and after natural aging). The general technologies for shaping the mechanical and electrical properties of Al-Mg-Si wire rods include two kinds: high- and low-temperature heat treatments. High-temperature heat treatment includes a homogenization process and a supersaturation process. Low-temperature heat treatment takes place after supersaturation and includes natural or artificial aging. This study shows how the amount of Mg and Si influences the mechanical and electrical properties of EN-AW 6101 wire rods after different kinds of heat treatments. As the general aim of this study was to determine the effect of the material’s temper on its mechanical and electrical properties, the research considered the initial parameters of the starting materials being examined. These parameters can be modified by selecting the chemical composition of the Al-Mg-Si alloy and the value of precipitation hardening obtained with artificial.

scholarly journals Panel Board From Coconut Fibre And Pet Bottle

2018 ◽  
Vol 34 ◽  
pp. 01014 ◽  
Author(s):  
Norhayati Ngadiman ◽  
Masiri Kaamin ◽  
Aslila Abd. Kadir ◽  
Suhaila Sahat ◽  
Aziza Zaini ◽  
...  
Keyword(s):  
Water Absorption ◽  
Modulus Of Elasticity ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Aesthetic Value ◽  
Result Show ◽  
Water Absorption Test ◽  
Coconut Fibre ◽  
Outer Lining ◽  
Alternative Feedstock

The rate of global deforestation and its impact on the environment has led particle board manufacture to search for alternative feedstock, especially in countries where wood is less available compared to other cellulosic natural product. Based on the properties of coconut fibre and PET bottle, these two materials can be recycle as raw material for manufacture of panel board. As for this study, the coconut fibre were used as the filler and PET bottle as outer lining of the panel board. Two types of coconut fibre were used which are grinding and un-grinding coconut fibre. At first, the coconut fibre are undergoes softening, grinding, drying and sieving process, while PET bottle was cleaning, shredding, sieving before compacted using hydraulic hot press machine. There are four types of testing that been carried out which are swelling, water absorption, Modulus of Elasticity (MOE) and Modulus of Rupture (MOR). The result show the conventional board has the highest value for MOE test, so it’s indicate that the conventional board is less strength from the coconut fibre board. As for water absorption test, the average water absorption of coconut fibre based panel board is less than conventional board. Overall, the coconut fibre board is better than conventional panel board because coconut fibre board are less swelling, has low water absorption, high modulus of rupture and low modulus of elasticity. Based on the finding, this coconut fibre panel board has potential as a stronger and long-lasting panel board than the conventional board in the market. Other than that, the panel also have their own aesthetic value since the recycled plastic bottle used as outer lining is colourful and giving aesthetic value.

scholarly journals An Investigation of Groundwater Contamination around Nsukka Municipality Dumpsite using the Resistivity Method

2020 ◽  
Author(s):  
Olisah Nzemeka
Keyword(s):  
Electrical Resistivity ◽  
Groundwater Contamination ◽  
Low Resistivity ◽  
Electrical Resistivity Survey ◽  
Resistivity Method ◽  
Electrical Sounding ◽  
On Line ◽  
2D Resistivity Imaging ◽  
Resistivity Meter ◽  
2D Resistivity

An investigation using electrical resistivity method was conducted around a solid waste dumpsite at Nsukka in Nsukka L.G.A of Enugu State, Nigeria to investigate the level of groundwater contamination. Electrical Sounding (VES) and 2D resistivity imaging were used with a digital read out resistivity meter (ABEM SAS 1000) to acquire data in the area. A total of eight (8) sounding and six (6) 2D resistivity imagings were carried out in the area. A contaminant leachate plume was delineated in 2D resistivity sections as low resistivity zones while the VES shows the depth of aquifer. In 2D pseudosections where bluish colours with low resistivities (less than 20.80Ωm) with the depth ranging from 1.28m to 17.1m in the Line 1 and 2 are seen as contaminated zones. The rest of the lines are not contaminated because of their high resistivities (greater than 20.80Ωm). The result of the electrical resistivity survey also showed 4 - 5 layers geo-electric sections and an AA and AK type sounding curves. The VES result shows that VES 1A, 1B, 2A and 2B which are carried out on line 1 & 2 of the wenner lines showed signs of contamination with low resistivity values less than 20.80Ωm complementing the wenner results. The contamination has not yet got to where the aquifer is located on the lines. Since the depth to the aquifer ranges from 30.26m to 155.43m while maximum depth of contamination is 17.1m. It is believed that the leachate has not percolated down to the aquiferous zones as such aquifers are presumed to be free.

scholarly journals Identification of Aquifer Layer Based on 2D Resistivity Data in Lhokseumawe Aceh-Indonesia

2019 ◽  
Vol 8 (3) ◽  
pp. 78-83
Author(s):  
Zul Fadhli ◽  
Muhammad Syukri ◽  
Marwan Marwan
Keyword(s):  
Ground Water ◽  
Sea Water ◽  
Confined Aquifer ◽  
Clayey Sand ◽  
Sea Water Intrusion ◽  
Aceh Province ◽  
On Line ◽  
Aquifer Type ◽  
2D Resistivity ◽  
Schlumberger Array

Penelitian untuk mengidentifikasi keberadaan air tanah dan kedalaman akuifer telah dilakukan di wilayah KEK Arun Lhokseumawe Provinsi Aceh dengan kondisi geologi daerah penelitian adalah batuan lanauan dan batuan lempung serta geomorfologinya berupa perkebunan dan sungai buatan. Penelitian ini mengaplikasikan metode geolistrik resistivitas 2D dengan konfigurasi Wenner-Schlumberger. Akuisisi data di lapangan menggunakan alat SuperSting R8 yang keseluruhannya mempunyai 4 lintasan pengukuran dengan lintasan 1 dan 2 memotong lintasan 3 dan 4, panjang masing-masing lintasan pengukuran tersebut adalah 400 m. Pemprosesan data Hasil akuisisi di lapangan menggunakan software Res2dinv untuk menampilkan model 2D bawah permukaan di lokasi penelitian. Hasil interpretasi menunjukkan lintasan L1 pada kedalaman sampai dengan 70 m terdapat lempung berpasir, lanauan dan gravel. Terdapatnya pengaruh instrusi air laut pada kedalaman 25 m yang ditandai dengan nilai resistivitas 1 Ώm. Lapisan akuifer di identifikasi pada jarak bentangan 100 - 200 m dan pada kedalaman 60 m dengan nilai resistivitas 30 Ωm. Penampang lintasan 3 dan 4 tidak menunjukkan adanya lapisan akuifer yang layak untuk diexploitasi pada lintasan tersebut. Interpretasi lintasan L4 menunjukkan adanya intrusi air laut yang besar pada lapisan pertama. Terdapat 3 lapisan yang kontras yaitu lapisan lempung berpasir, gravel/lempung lanauan dan batuan dasar. Lapisan akuifer pada lintasan 4 diinterpretasikan berada pada kedalaman 70 m dengan nilai resistivitas 30 Ωm. Rekomendasi yang paling layak untuk lokasi pengeboran yaitu pada lintasan 4 pada jarak bentangan 180 m dengan jenis akuifer tertekan. The research to identified ground water and depth of aquifer was conducted in KEK Arun Lhokseumawe Aceh Province. The geology contained siltstone and clay with geomorphology area are plantation and artificial river. The 2D resistivity acquisition was using Supersting R8 equipment with Wenner-Schlumberger array. There are 4 survey lines that conducted in the area where line 1 and 2 were crossed with line 3 and 4. The length of each line is 400 m respectively. The data processing was using Res2dinv software to shows 2D subsurface model. The result shown that line 1 is sandy clay, siltstone and gravel at depths up to 70 m. It was influenced by sea water at depth 25 m with resistivity value of 1 Ωm. The aquifer layer was identified at depth 60 m with resistivity value of 30 Ωm. However, line 3 and 4 were presented that the area surveys are suitable for exploration which have not indicate the existence of an aquifer layer. In the last line, it shown sea water intrusion at the first layer. There are 3 layers that contained in line 4 which is clayey sand, gravel and bedrock. The aquifer layer at Line 4 was interpreted at depth 70 m with resistivity value of 30 Ωm. The most feasible recommendation for a drilling location is on Line L4 at a distance of 180 m with a confined aquifer type. Keywords: Aquifer, Resistivity, Lhokseumawe, ground water, sand

scholarly journals Study on Functional Ingredients and Claims of Ready to Drink (RTD) Fruit Juice in Modern Retail

2019 ◽  
Vol 1 (1) ◽  
pp. 13-22
Author(s):  
Hendry Noer Fadlillah ◽  
Tina Nurkhoeriyati ◽  
Lira Felanesa ◽  
Andika Wahyu Utomo
Keyword(s):  
Vitamin A ◽  
Vitamin C ◽  
Fruit Juice ◽  
Nutrient Content ◽  
Fruit Juices ◽  
Raw Material ◽  
Functional Ingredients ◽  
Result Show ◽  
Health Related ◽  
Label Claim

Fruit juices are well known as healthy food.  Consumers consume fruit juices not only to get refreshment, but also to get health benefits. The aims of this research are to identify health-related claims in juices and functional ingredients used to meet the regulation on claim requirement. The research was conducted by collecting RTD (ready to drink) juice in modern retail. All of the information on the label is recorded, identified, and classified based on regulation document, then processed and analyzed statistically. The result show, 70% of product samples provide claims on the label.  Claim on vitamin C is the most favorite one. As much as 52% of claimed products contain vitamin C – related claim. After vitamin C, the next popular claims are regarding dietary fiber (11%) and vitamin A (10%).  Interestingly, 63% of claimed products provide more than one nutrient claims. They combine two or more nutrients content as the claim, such as vitamin C and vitamin A, fiber and vitamin C, etc. There is 20% of RTD fruit juice enriched or fortified by functional ingredients, mostly in vitamin premix.  It means, claims are not only given by addition of functional ingredients from the outside.  RTD juice industries are still able to provide the claim, without fortification or enrichment, if they can maintain the nutrient content of raw material to meet requirement of regulation on claim.

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