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Journal of Geoscience, Engineering, Environment, and Technology
Published by Universitas Islam Riau
ISSN : 2503216X     EISSN : 25415794     DOI : 10.25299
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science Physics
JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 551 Documents
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The Influence Of Country Of Origin And Quality Perceptions On Purchase Intention (Study At Xiaomi Sales Center - Pekanbaru) Aravind Girish; Wahyudi Pangabean; Madhav Abhijit Shashank
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 1 (2024): JGEET Vol 09 No 01 : March (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.1.19196

Abstract

The purpose of this study was to examine the effect of Country of Origin and Perceived Quality on Purchase Intention for Xiaomi Smartphone Products (study conducted at the Xiaomi-Pekanbaru Sales Center). Country of Origin refers to a person's perception of a product based on its country of origin. Perceived Quality is an opinion or evaluation of something's quality. Purchase intent can be influenced by the country of origin and perceived quality. The product is from the country of origin and has a perceived quality, therefore consumer buying interest increases. This survey was performed at the Xiaomi Center Pekanbaru and included 91 persons as respondents. A questionnaire was used to collect data. The questionnaire data were then analyzed statistically, including simple linear analysis, multiple linear analysis, determination analysis, and significance testing using the t-test (partial) and F-test (simultaneous). First, the results of assessing the t-test hypothesis revealed that on the effect of country of origin on purchase intention, t-count (15,815) > t-table (1,780). These findings suggest that the country of origin has a major impact on purchasing intent. Second, perceived quality on purchase intention has t-count (9,982) > t table (1,780), indicating that perceived quality has a considerable influence on customer purchase intention. The results of the F country of origin test and perceived quality of purchase intention are F-count (123,673) > F-table (3,097). This finding means that the country of origin and perceived quality simultaneously have a significant effect on consumer purchase intentions.
Increasing Production Of Purple Sweet Potato (Ipomoea Batatas Poir) By Treatment Of Shimmer Fertilizer and Kaliphos Chloe Ava Charlotte; Gunawan, Aditiya; Patrick Ontario
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.3.19205

Abstract

The title of the research was “Increased Production of Purple Sweet Potato (Ipomoea batatas poir) with Vermicompost and Kaliphos Fertilizer Treatment”. This research was carried out for 4 months in the experimental garden of the Faculty of Agriculture, Islamic University of Riau. The purpose of this study was to determine the effect of interaction and the main effect of increasing purple sweet potato production by the treatment of vermicompost and Kaliphos fertilizer. The design used was a completely randomized factorial design consisting of two factors. The first factor was vermicompost fertilizer (K) with 4 levels: 0. 550. 1.100. 1,650 g/bundle. The second factor is Kaliphos fertilizer: 0.5. 10. 15 g/plant. Parameters observed were the number of tubers per plant (fruit), tuber weight per tuber (g), tuber weight per plant (kg), tuber production per mound (kg), harvest index, and fresh chestnut weight per plant (kg). The last observational data were analyzed statistically and continued with the BNJ follow-up test at level 5 %. The results of the study conclude that the interaction effect of vermicompost and caliphos fertilizer is significant on tuber weight per tuber, tuber weight per plant, tuber production per mound, harvest index, and fresh chestnut weight per plant. The best treatment dose was 1,650 g/mound and Kaliphos 15 g/plant (K3L3). The main effect of vermicompost fertilizer is real in all treatments. The best treatment dose is 1,650 g/mound (K3). The main effect of caliphos fertilizer is significant for all treatments. The best treatment dose is 15 g/plant (L3).
Surfactant-Polymer Slug Optimization, Injection Rate & Pattern Size Determination Using The Cmg Simulator In The Mj Well Gaspar Fonseca Oliveira; Gama Luz Sousa; Zafran Syahyuda; Mario Abel Carvalho
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.3.19206

Abstract

The MJ well is one of the oldest in the Central Sumatra field. This field was originally produced in 1952, with a reserve of 4.5 MMSTB. This explains why EOR studies are needed to increase the production of oil. The MJ well can be injected with surfactant-polymer based on the EOR screening criteria. Surfactant performance mechanisms can minimise IFT and displacement, however, polymers can limit mobility by increasing the viscosity of formation water and sweep efficiency. It is preferable to use reservoir modelling before applying surfactant-polymer to a well. Surfactant-polymer simulation, specifically CMG software, is used in this research. Several simulations were run using sensitivity such as slug SP, injection rate, and pattern size to determine the best approach for use in the MJ well. Surfactant injection was performed after a year of applying a water flood followed by injection of surfactant-polymer with several slug variations, namely 0.2 PV, 0.3 PV, 0.4 PV, 0.5 PV, and 0.6 PV at varied injection rates. 1600 BPD, 2300 BPD, and 3000 BPD, as well as many well-pattern variations, including a 5-spot pattern, a 7-spot pattern, and a 9-spot pattern. Based on the simulation, optimal results are obtained at a slug of 0.6 PV, an injection rate of 3000 BPD, and a 5-Spot well pattern with a total amount of oil of 2,023,700 bbl and a recovery factor of 81.67%.
Front matter JGEET Vol 09 No 03 2024 (J. Geoscience Eng. Environ. Technol.), JGEET
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

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Abstract

Back matter JGEET Vol 09 No 03 2024 (J. Geoscience Eng. Environ. Technol.), JGEET
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

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Abstract

Cost-Efficient Digital Elevation Model (DEM) Acquisition on Flume Tank Morphodynamic Observation Prasojo, Octria Adi; Aufar, Adlirrahman; Syahputra, Reza
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.2311

Abstract

Digital Elevation Model (DEM) is well known for providing solutions to the theoretical and application-related problems around geosciences. The use of DEM in flume tank experiment is getting more common nowadays. Flume tank itself is built to simulate the landscape and stratigraphy at laboratory scale. This physical experiment may have tremendous impacts on understanding the sedimentation process in a laboratory-scaled experiment. Normally, the morphodynamic behaviour of a laboratory-scaled deposit in the flume tank experiment would be observed through its digital elevation model. In this paper, a novel method in constructing cost-efficient digital elevation model was presented. By using this inexpensive tool to create a digital elevation model in a flume tank experiment setup, some challenges and benefits will follow this method. Some challenges including tool’s resolution and time consuming could be diminished in the near future by creating automated motor system to move the laser distance meter sequentially. Automated and integrated system from the LDM to the processing software could also reduce the time consumption. In the other hand, some benefits including financial benefit, reliability in a sedimentary structure scale, and also the practicality to be applied in any flume tank system available in Indonesia. Nevertheless, this method had been tested and some reliable results from the previous studies in Quantitative Sedimentology Laboratory, Universitas Indonesia was presented in this paper. Hopefully, some major improvements could be done to get more accurate and detail digital elevation model in the near future.
Recognizing Synrift and Postrift Structures on Rock Exposures in The Tanjung Aur II Region, South Bengkulu, Indonesia Rio Hanzra Adjie Pamungkas; Edy Sutriyono
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.14528

Abstract

Field observation has been carried out recently in the Tanjung Aur II region, South Bengkulu in order to recognize the structural configuration of rock sequences, employing two fundamental approaches such as the analysis of Digital Elevation Model (DEM) and the surface mapping, particularly on geological structures. The DEM analysis reveals two general patterns of the NE-SW and NW-SE lineaments. The NE-SW trend appears consistent with the structural features resulted from the WNW-directed rifting event, whereas the NW-SE orientation seems coincident with the general strike of the Bengkulu Basin. The field mapping has recognized five types of brittle structures and two ductile deformations. The outcropping brittle deformation includes the Tanjung Aur II-A listric extensional fault, Tanjung Aur II-B listric extensional fault, Tanjung Aur II-C domino extensional fault, and Tanjung Aur II-D listric extensional fault that all strike to NE-SW, and the Air Selali compressional fault which trends to NW-SE. The recognized ductile structures are those of the Air Kenidian Anticline and Syncline, which have a general trend to NW-SE. Importantly, the encountered structures suggest two distinct episodes of tectonic events, transtension and transpression. The transtensional regime associated with the WNW extension of rifting. The synrift event commenced in Paleogene or Paleocene-Eocene time, and proceeded up to Neogene. Hence, the sedimentary influx within the basin had likely been accommodated by the occurring tectonic deformation which resulted in the synrift listric extensional faults. The transpressional regime in the study area led to ductile deformation responsible for thrusting and folding of sedimentary sequences. This post-rifting episode perhaps associated with the onset of Barisan orogeny that allowed inversion of sedimentary basin in Late Neogene or Plio-Pleistocene time. Herein, this tectonic episode is considered as the last event that caused the rock successions to be uplifted and the generated structures in rock units to be exposed at the surface due mainly to denudation and erosion.
Hydro-Oceanographic Conditions in the Development of Tinobu Port Lasolo Sub-district North Konawe Regency Southeast Sulawesi Province Chaerul, Muhammad; Usman, Rizki
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.14929

Abstract

Indonesia is one of the world's largest maritime countries, with many small islands scattered from Sabang to Merauke. Therefore, the presence of a port plays a crucial role in maritime transportation, which is highly essential for the Indonesian population. When planning a port, there are numerous aspects to consider, ranging from environmental to structural aspects of the port's development. In this context, researchers conducted a study to analyze the water conditions around Tinobu Port, specifically focusing on topography, bathymetry, and tides, often referred to as Hydro-Oceanography. These three aspects of Hydro-Oceanography play a vital role in port planning, as topography and bathymetry shape the land and water contours, and tidal analysis determines elevation bindings.
Analysis of the Effect of Bagasse Addition on Compressive Strength, Porosity, and Permeability of Pervious Concrete as Material for Green Building Program Harmiyati; Al Ihsyan, Nurman; Syahputri, Devi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.15093

Abstract

Pervious concrete is still not widely used in construction work because it has shortcomings in terms of compressive strength, The researcher tried to increase the percentage of aggregate from wasted materials in the form of bagasse and if the compressive strength of pervious concrete with additional bagasse material has a standard compressive strength of 12 MPa can be applied as parking areas, light-traffic roadways, and sidewalks while maintaining its permeability properties to reduce surface water runoff in construction. Because of these advantages, pervious concrete is often used as a supporting material for Green Building programs in the world. This research method was carried out based on the standardization of SNI 7656-2012 and ACI 522R-10 for testing compressive strength, porosity, and permeability to pervious concrete in the form of cylinders measuring 15 x 30 cm, with variations in the addition of dry bagasse of 0%, 2%, 4%, and 6% by weight of cement. The results of the average compressive strength of pervious concrete at the age of 28 days with a total of 3 samples for variations of 0%, 2%, 4%, and 6% are 12.4 MPa, 14.1 MPa, 16.5 MPa, and 18.9 MPa respectively and are in accordance with the ACI 522R-10 standard. The average porosity results of pervious concrete with a total of 3 samples for variations of 0%, 2%, 4%, and 6% are 23.5%, 20.6%, 19.5%, and 17.4%, respectively. The average permeability results of pervious concrete with a total of 3 samples for 0%, 2%, 4%, and 6% variations are 0.46 cm/sec, 0.33 cm/sec, 0.27 cm/sec, and 0.20 cm/sec, respectively. Therefore, the pervious concrete in this study uses environmentally friendly materials that comply with the first category of water conversion and the second category of material sources and cycles in the Greenship New Building assessment by GBCI.
Segmentation of the Active Fault on the Cirebon-Semarang Segments as Revealed by DEM-Derived Geomorphic Indices Jannah, Miftahul; Pamumpuni, Astyka; Sadisun, Imam Achmad
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.15572

Abstract

This research focuses on the segmentation and tectonic activity of the Baribis-Kendeng Fault across the Cirebon to Semarang segments, revealed through the analysis of geomorphic indices derived from Digital Elevation Models (DEM). Utilizing geomorphic indices such as the Hypsometric Integral (HI), Stream Length-Gradient Index (SL), and SL/K ratio, the analysis was conducted on 33 streams crossing ten segments. The results indicate that the landscape in the research area is predominantly in the youthful stage, with HI values ranging from 0.459 to 0.492, indicating active tectonic uplift. Segments such as Ungaran and Pemalang exhibit significant tectonic activity, with high SL/K values, particularly in the Ungaran segment, where the SL/K value reaches 344.872. These findings suggest that fault activity in the region is ongoing, with stronger uplift patterns observed at the western and eastern ends of the fault, while relatively lower activity is found in the central area. This research highlights the ongoin tectonic processes shaping the region’s geomorphology and contributes to a better understanding of the active fault system in Java Island.

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