Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Civil Engineering (466)
- Environmental Engineering (225)
- Transportation Engineering (137)
- Physical Sciences and Mathematics (125)
- Structural Engineering (99)
-
- Construction Engineering and Management (81)
- Environmental Sciences (81)
- Architecture (75)
- Social and Behavioral Sciences (63)
- Geotechnical Engineering (57)
- Other Civil and Environmental Engineering (51)
- Bioresource and Agricultural Engineering (50)
- Mechanical Engineering (50)
- Materials Science and Engineering (46)
- Earth Sciences (44)
- Hydraulic Engineering (43)
- Architectural Engineering (41)
- Electrical and Computer Engineering (36)
- Public Affairs, Public Policy and Public Administration (35)
- Water Resource Management (34)
- Chemical Engineering (33)
- Sustainability (30)
- Business (29)
- Electrical and Electronics (26)
- Computer Engineering (25)
- Education (25)
- Metallurgy (25)
- Construction Engineering (24)
- Institution
-
- University of Nebraska - Lincoln (100)
- Missouri University of Science and Technology (87)
- Portland State University (80)
- Purdue University (61)
- Utah State University (60)
-
- University of South Florida (53)
- University of Kentucky (52)
- University of Texas at Arlington (43)
- Technological University Dublin (37)
- Brigham Young University (33)
- Old Dominion University (32)
- Marquette University (31)
- Clemson University (30)
- University of Central Florida (30)
- Louisiana State University (28)
- Michigan Technological University (26)
- California Polytechnic State University, San Luis Obispo (24)
- University of Arkansas, Fayetteville (24)
- Universitas Indonesia (23)
- University of Texas at El Paso (18)
- University for Business and Technology in Kosovo (15)
- Air Force Institute of Technology (14)
- University of Nevada, Las Vegas (14)
- Western Michigan University (14)
- Chulalongkorn University (13)
- Santa Clara University (11)
- United Arab Emirates University (10)
- University of South Carolina (10)
- City University of New York (CUNY) (7)
- Georgia Southern University (7)
- Keyword
-
- Sustainability (21)
- Concrete (15)
- Civil Engineering (13)
- Applied sciences (12)
- Construction (12)
-
- Engineering (12)
- Modeling (12)
- Transportation (11)
- Senior thesis -- Santa Clara University -- Department of Civil Engineering (10)
- UWRL (10)
- Bridge (9)
- Climate change (9)
- Simulation (9)
- Interview (8)
- Kentucky (8)
- Practitioner (8)
- Remote sensing (8)
- Sea level rise (8)
- Building (7)
- Optimization (7)
- Pavement (7)
- Safety (7)
- Technology (7)
- Training (7)
- Wastewater (7)
- Drought (6)
- Educating (6)
- Energy (6)
- Heating (6)
- Infrastructure (6)
- Publication
-
- Theses and Dissertations (59)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (47)
- Electronic Theses and Dissertations (39)
- Civil and Environmental Engineering Faculty Publications and Presentations (37)
- Civil Engineering Theses - Archive (29)
-
- Department of Agricultural and Biological Systems Engineering: Faculty Publications (29)
- USF Tampa Graduate Theses and Dissertations (28)
- Civil and Environmental Engineering Faculty Research and Publications (23)
- Kentucky Transportation Center Research Report (23)
- Makara Journal of Technology (23)
- Civil and Environmental Engineering Faculty Publications (22)
- Sinkhole Conference 2015 (22)
- All ECSTATIC Materials (20)
- Nebraska Department of Transportation: Research Reports (20)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (18)
- Open Access Theses & Dissertations (18)
- The Professional Constructor (16)
- Civil & Environmental Engineering Theses & Dissertations (15)
- Graduate Theses and Dissertations (15)
- LSU Master's Theses (15)
- Master's Theses (15)
- Open Access Dissertations (15)
- UBT International Conference (15)
- Dissertations, Master's Theses and Master's Reports - Open (14)
- Masters Theses (14)
- American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present) (13)
- Articles (13)
- Civil and Environmental Engineering Master's Project Reports (13)
- Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research (13)
- LSU Doctoral Dissertations (13)
- Publication Type
- File Type
Articles 1 - 30 of 1146
Full-Text Articles in Civil and Environmental Engineering
14-08 Big Data Analytics To Aid Developing Livable Communities, Li Yang, Hyunkeun Cho, Jun-Seok Oh
14-08 Big Data Analytics To Aid Developing Livable Communities, Li Yang, Hyunkeun Cho, Jun-Seok Oh
Transportation Research Center Reports
In transportation, ubiquitous deployment of low-cost sensors combined with powerful computer hardware and high-speed network makes big data available. USDOT defines big data research in transportation as a number of advanced techniques applied to the capture, management and analysis of very large and diverse volumes of data. Data in transportation are usually well organized into tables and are characterized by relatively low dimensionality and yet huge numbers of records. Therefore, big data research in transportation has unique challenges on how to effectively process huge amounts of data records and data streams. The purpose of this study is to conduct research …
Analysis Of Productivity In Dredging Project : A Case Study In Port Of Tanjung Perak Surabaya – Indonesia, Tiggi P. Hardya
Analysis Of Productivity In Dredging Project : A Case Study In Port Of Tanjung Perak Surabaya – Indonesia, Tiggi P. Hardya
World Maritime University Dissertations
No abstract provided.
Influence Of The Substrate Characteristics On The Bond Behavior Of Pbo Frcm-Concrete Joints, Tommaso D'Antino, Lesley H. Sneed, Christian Carloni, Carlo Pellegrino
Influence Of The Substrate Characteristics On The Bond Behavior Of Pbo Frcm-Concrete Joints, Tommaso D'Antino, Lesley H. Sneed, Christian Carloni, Carlo Pellegrino
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Fiber Reinforced Cementitious Matrix (FRCM) composites can be employed as a valid alternative to Fiber Reinforced Polymers (FRP) composites for strengthening existing reinforced concrete (RC) structures. The weakness of FRCM-concrete joints has been reported to be at the matrix-fiber interface rather than within the concrete substrate, as is usually reported in the case of FRP-concrete joints. The experimental investigations regarding FRCM strengthening available in the literature have been performed by applying the FRCM composite onto a surface that was treated before the application, usually by grinding or sandblasting. However, the role of the substrate characteristics on the failure mechanism of …
Comparison Of Novel Carboneous Structures To Treat Nitroaromatic Impacted Water, Benjamin M. Doane
Comparison Of Novel Carboneous Structures To Treat Nitroaromatic Impacted Water, Benjamin M. Doane
Theses and Dissertations
Carboneous materials such as carbon nanotube (CNT), granular activated carbon (GAC), and biochar are promising materials for the removal of organic contaminants from aqueous phase solutions. CNTs have astonishing mechanical strength, chemical and thermal stability and high surface area. While biochar, similar to GAC, having an extremely porous structure and high surface area, can be produced in more austere conditions with native materials. In this study, novel CNT-Hybrid structures (CNT-HS), hardwood pellet (HWP) Biochar and standard GAC (F-600 GAC) were used as adsorbents to treat water contaminated by a model nitroaromatic compound, 2,4-dinitrotoluene (DNT).
2015 Fall Engr333 Project Final Report, Zach Carney, Vicent Rovedatti, Caleb Meindertsma, Daniel Devries, Tobin Tarantowski, Hanfei Niu, Kemal Talen, Ayo Ayoola, Dalton Veurink, Mitch Dubois, Jacob Milhorn, Joseph Cha, Andrew Bouma, Lance Jensen, Se Ge Jung, J. Alex Karr, Stephen Lander, Justin Cooper, Zach Veenstra, Ross Tenney, Phil Van Strien
2015 Fall Engr333 Project Final Report, Zach Carney, Vicent Rovedatti, Caleb Meindertsma, Daniel Devries, Tobin Tarantowski, Hanfei Niu, Kemal Talen, Ayo Ayoola, Dalton Veurink, Mitch Dubois, Jacob Milhorn, Joseph Cha, Andrew Bouma, Lance Jensen, Se Ge Jung, J. Alex Karr, Stephen Lander, Justin Cooper, Zach Veenstra, Ross Tenney, Phil Van Strien
ENGR 333
The ENGR-333 class was tasked with answering the question: “What would it take for Calvin College to save $600,000/year on campus operations?” The class choose five buildings as study samples, and invested the saving potential on three aspects: energy efficiency, operational and behavioral changes. The five buildings chose by the class were the: Covenant Fine Arts Center, Kalsbeek Huizinga vanReken, Science Building Complex, Shultze Eldersveld, and Spoelhof Fieldhouse Complex.
A Simulation Of The Mississippi River Salt Wedge Estuary Using A Three-Dimensional Cartesian Z Coordinate Model, Steven K. Ayres
A Simulation Of The Mississippi River Salt Wedge Estuary Using A Three-Dimensional Cartesian Z Coordinate Model, Steven K. Ayres
LSU New Orleans Theses and Dissertations
The stratified flow of the lower Mississippi River due to density gradients is a well documented phenomenon. This stratification of fresh and saline water manifests itself as a heavier wedge of saline water that extends upriver and a buoyant fresh water plume extending into the Gulf of Mexico past the Southwest Pass jetties. The maximum absolute distance of saltwater intrusion observed anywhere in the world occurred on the Mississippi River in 1939 and 1940 when saltwater was observed approximately 225 km upstream from the mouth of Southwest Pass. The U. S. Army Corps of Engineers now prevents the wedge from …
Field Study Of Electrochemical Disinfection Of Municipal Wastewater, Luis De Grau Vidal
Field Study Of Electrochemical Disinfection Of Municipal Wastewater, Luis De Grau Vidal
LSU New Orleans Theses and Dissertations
Research on electrochemical disinfection of municipal wastewater has been conducted at the University of New Orleans using a continuous flow electrochemical reactor connected to a direct current (DC) power supply changing its polarity and varying the electrode distance. Bacterial inactivation and chlorine production were the main parameters that were recorded.
After months of research, it was determined that the electrochemical disinfection reactor is efficient and has a great potential for the future. There is no need to use chlorine and it has low operation costs.
The following design recommendations for an electrochemical disinfection unit were given:
- A detention time of …
An Assessment Of The Accuracy Of The Euler-Bernoulli Beam Theory For Calculating Strain And Deflection In Composite Sandwich Beams, Qhinhon D. Ho
An Assessment Of The Accuracy Of The Euler-Bernoulli Beam Theory For Calculating Strain And Deflection In Composite Sandwich Beams, Qhinhon D. Ho
LSU New Orleans Theses and Dissertations
This study focuses on assessing the accuracy of the Euler-Bernoulli beam theory as computational bases to calculate strain and deflection of composite sandwich beam subjected to three-point and four-point bending. Two groups of composite sandwich beams tests results will be used for comparison purposes. Mechanical properties for the laminated skin are provided by researchers from University of Mississippi (Ellen Lackey et al., 2000). Mechanical properties for the balsa wood core are provided by Alcan Baltek Corporation. Appropriate material properties and test geometries are then used in the Euler-Bernoulli-based algorithm in order to generate analytical data for comparison to experimental data …
Multi-Criteria Evaluation Of Cmip5 Gcms For Climate Change Impact Analysis, Ali Ahmadalipour, Arun Rana, Hamid Moradkhani, Ashish Sharma
Multi-Criteria Evaluation Of Cmip5 Gcms For Climate Change Impact Analysis, Ali Ahmadalipour, Arun Rana, Hamid Moradkhani, Ashish Sharma
Civil and Environmental Engineering Faculty Publications and Presentations
Climate change is expected to have severe impacts on global hydrological cycle along with food-water-energy nexus. Currently, there are many climate models used in predicting important climatic variables. Though there have been advances in the field, there are still many problems to be resolved related to reliability, uncertainty, and computing needs, among many others. In the present work, we have analyzed performance of 20 different global climate models (GCMs) from Climate Model Intercomparison Project Phase 5 (CMIP5) dataset over the Columbia River Basin (CRB) in the Pacific Northwest USA. We demonstrate a statistical multicriteria approach, using univariate and multivariate techniques, …
Evaluation Of Viirs Land Surface Temperature Using Crest-Safe Air, Snow Surface, And Soil Temperature Data, Carlos L. Pérez Díaz, Tarendra Lakhankar, Peter Romanov, Reza Khanbilvardi, Yunyue Yu
Evaluation Of Viirs Land Surface Temperature Using Crest-Safe Air, Snow Surface, And Soil Temperature Data, Carlos L. Pérez Díaz, Tarendra Lakhankar, Peter Romanov, Reza Khanbilvardi, Yunyue Yu
Publications and Research
In this study, the Visible Infrared Imager Radiometer Suite (VIIRS) Land Surface Temperature (LST) Environmental Data Record (EDR) was evaluated against snow surface (T-skin) and near-surface air temperature (T-air) ground observations recorded at the Cooperative Remote Sensing Science and Technology Center—Snow Analysis and Field Experiment (CREST-SAFE), located in Caribou, ME, USA during the winters of 2013 and 2014. The satellite LST corroboration of snow-covered areas is imperative because high-latitude regions are often physically inaccessible and there is a need to complement the data from the existing meteorological station networks. T-skin is not a standard meteorological parameter commonly observed at synoptic …
Assessment Of Classifiers For Potential Voice-Enabled Transportation Apps, Md Majbah Uddin
Assessment Of Classifiers For Potential Voice-Enabled Transportation Apps, Md Majbah Uddin
Theses and Dissertations
Transportation apps are playing a positive role for today’s technology-driven users. They provide users with a convenient and flexible tool to access transportation data and services, as well as collect and manage data. In many of these apps, such as Google Maps, their operations rely on the effectiveness of the voice recognition system. For the existing and new apps to be truly effective, the built-in voice recognition system needs to be robust (i.e., being able to recognize words spoken in different pitch and tone). The goal of this study is to assess three post-processing classifiers (i.e., bag-of-sentences, support vector machine, …
Numerical And Experimental Investigations Of Dam And Levee Failure, Ezzat Youssef Elhassan Mohamed Elalfy
Numerical And Experimental Investigations Of Dam And Levee Failure, Ezzat Youssef Elhassan Mohamed Elalfy
Theses and Dissertations
Both numerical and experimental investigations are conducted to study the failure of earthen dams and levees. Boussinesq equations describing one-dimensional unsteady flow including non-hydrostatic pressure distribution are solved numerically along with Exner equation for the sediment mass conservation to include the effects of the streamline curvature on the failure of non-cohesive earthen embankments. In addition, the effects of the steep bottom slope on the flow variables during the failure are studied by solving the Saint- Venant equations modified for steep bed slope along with the Exner equation to simulate non-cohesive earthen embankment failure due to overtopping. The Boussinesq equations are …
Experimental Study Of Longitudinal Sorting Of Particles Differing In Size And Density, Nabila Mahjabeen
Experimental Study Of Longitudinal Sorting Of Particles Differing In Size And Density, Nabila Mahjabeen
Theses and Dissertations
Transport, deposition and erosion of sediment particles differing in size, shape and density may result in particle segregation, which in geosciences applications is generally referred to as sediment sorting. A thorough understanding of sediment sorting processes is important to describe and model a wide variety of natural processes such as the decrease in particle size and/or density in a fluvial system (downstream fining and/or lightening), the formation of economic placers, concentration of heavy minerals, chemical and metal pollutants etc. Sorting of sediment grains associated with sediment transport in the streamwise direction results in the development of longitudinal sorting patterns. Vertical …
Confluence Of Density Currents Over An Erodible Bed, Hassan Ismail
Confluence Of Density Currents Over An Erodible Bed, Hassan Ismail
Theses and Dissertations
Results from laboratory experiments on conservative density current confluence are reported. Hydraulic characteristics and morphodynamic consequences of the confluence of two continuous release density currents in a horizontal, 45 degree asymmetrical junction are examined and compared to those of terrestrial river junctions. It was observed that density current confluence is markedly different than those in river junctions primarily due to the ease of the dense fluid to convect into the ambient fluid in the junction zone. Upward convection in the junction resulted in low horizontal velocity and shear stresses on the bed of the junction zone, followed by re-plunging to …
Site Development At The Corner Of Drake And Stadium, Ahmad Sear Rahimi
Site Development At The Corner Of Drake And Stadium, Ahmad Sear Rahimi
Honors Theses
This report presents the site layout alternatives for the development located at the corner of Drake and Stadium in Kalamazoo, Michigan. In the report four different layouts are suggested and followed by best management practices for grading and earthwork plans, porous asphalt pavement design, storm water retention design for the proposed site, and storm sewer pipe design. The redesign of the Costco Development Site aims to maximize efficiency of the development area through the warehouse and gas station location, parking lot layout, and trucking routes. Grading design is developed based on the existing site conditions before construction took place. The …
2015 Fall Engr333 Student Seminar Presentation, Justin Cooper, Ross Tenney, Philip Van Strien, Zach Veenstra, Ayo Ayoola, Hanfei Niu, Kemal Talen, Dalton Veurink, Lance Jensen, Se Ge Jung, Alex Karr, Stephen Lander, Andrew Bouma, Joseph Cha, Mitch Dubois, Jacob Milhorn, Caleb Meindertsma, Dan Devries, Tobin Tarantowski, Zach Carney, Vincent Rovedatti
2015 Fall Engr333 Student Seminar Presentation, Justin Cooper, Ross Tenney, Philip Van Strien, Zach Veenstra, Ayo Ayoola, Hanfei Niu, Kemal Talen, Dalton Veurink, Lance Jensen, Se Ge Jung, Alex Karr, Stephen Lander, Andrew Bouma, Joseph Cha, Mitch Dubois, Jacob Milhorn, Caleb Meindertsma, Dan Devries, Tobin Tarantowski, Zach Carney, Vincent Rovedatti
ENGR 333
File for student presentation, given by students in the Fall 2015 class of ENGR333.
How Do Changes To The Railroad Causeway In Utah’S Great Salt Lake Affect Water And Salt Flow?, James S. White, Sarah E. Null, David G. Tarboton
How Do Changes To The Railroad Causeway In Utah’S Great Salt Lake Affect Water And Salt Flow?, James S. White, Sarah E. Null, David G. Tarboton
Civil and Environmental Engineering Faculty Publications
Managing terminal lake elevation and salinity are emerging problems worldwide. We contribute to terminal lake management research by quantitatively assessing water and salt flow for Utah’s Great Salt Lake. In 1959, Union Pacific Railroad constructed a rock-filled causeway across the Great Salt Lake, separating the lake into a north and south arm. Flow between the two arms was limited to two 4.6 meter wide rectangular culverts installed during construction, an 88 meter opening (referred to locally as a breach) installed in 1984, and the semi porous material of the causeway. A salinity gradient developed between the two arms of the …
Development Of Semi-Circular Bending (Scb) Fracture Test For Bituminous Mixtures, Gabriel Nsengiyumva
Development Of Semi-Circular Bending (Scb) Fracture Test For Bituminous Mixtures, Gabriel Nsengiyumva
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
Granted that most distresses in asphalt (flexible) concrete (AC) pavements are directly related to fracture, it becomes clear that identifying and characterizing fracture properties of AC mixtures is a critical step towards a better pavement design. This thesis examines the testing variables of a reliable and practical semicircular bending (SCB) test for evaluating the fracture characteristics of asphalt concrete mixtures at intermediate service temperature conditions. The first part of this thesis investigates the repeatability of the SCB fracture test method by integrating a statistical-experimental approach to identify testing variables of the SCB test that result in repeatable test results. Toward …
Calibration Of Numerical Model For Shoreline Change Prediction Using Satellite Imagery Data, Sigit Sutikno, Keisuke Murakami, Dwi Puspo Handoyo, Manyuk Fauzi
Calibration Of Numerical Model For Shoreline Change Prediction Using Satellite Imagery Data, Sigit Sutikno, Keisuke Murakami, Dwi Puspo Handoyo, Manyuk Fauzi
Makara Journal of Technology
This paper presents a method for calibration of numerical model for shoreline change prediction using satellite imagery data in muddy beach. Tanjung Motong beach, a muddy beach that is suffered high abrasion in Rangsang Island, Riau province, Indonesia was picked as study area. The primary numerical modeling tool used in this research was GENESIS (GENEralized Model for Simulating Shoreline change), which has been successfully applied in many case studies of shoreline change phenomena on a sandy beach.The model was calibrated using two extracted coastlines satellite imagery data, such as Landsat-5 TM and Landsat-8 OLI/TIRS. The extracted coastline data were analyzed …
Independency Of Elasticity On Residual Stress Of Room Temperature Rolled Stainless Steel 304 Plates For Structure Materials, Parikin Parikin, David Allen
Independency Of Elasticity On Residual Stress Of Room Temperature Rolled Stainless Steel 304 Plates For Structure Materials, Parikin Parikin, David Allen
Makara Journal of Technology
Mechanical strengths of materials are widely expected in general constructions of any building. These properties depend on its formation (cold/hot forming) during fabrication. This research was carried out on cold-rolled stainless steel (SS) 304 plates, which were deformed to 0, 34, 84, and 152% reduction in thickness. The tests were conducted using Vickers method. Ultra micro indentation system (UMIS) 2000 was used to determine the mechanical properties of the material, i.e.: hardness, modulus elasticity, and residual stresses. The microstructures showed lengthening outcropping due to stress corrosion cracking for all specimens. It was found that the tensile residual stress in a …
Effect Of Fly Ash Fortification In The Manufacture Process Of Making Concrete Towards Characteristics Of Concrete In Sulfuric Acid Solution, Asep Handaya Saputra, Muhammad Shohibi, Masatoshi Kubouchi
Effect Of Fly Ash Fortification In The Manufacture Process Of Making Concrete Towards Characteristics Of Concrete In Sulfuric Acid Solution, Asep Handaya Saputra, Muhammad Shohibi, Masatoshi Kubouchi
Makara Journal of Technology
Fly ash is a silica or alumino silica material that can be used as a constituent of cement in the concrete manufacturing process. Utilization of fly ash aims to improve durability and minimize the reduction of concrete’s compressive strength exposed to an acidic environment, which can be achieved through the pozzolanic reaction of fly ash with Ca(OH)2 within concrete. The reduced content of Ca(OH)2 through pozzolanic reaction will minimize the tendency of ettringite formation (compounds that cause deterioration and decrease the compressive strength of concrete). In order to determine the relation between fly ash replenishment into concrete with concrete’s characteristics …
College Of Engineering Senior Design Competition Fall 2015, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Fall 2015, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge. The senior design competition helps focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects on …
Improving Renewable Energy Transition Acceptance: A Simulation Gaming Approach On A Multi Actor Setting In The Netherlands, Aziiz Sutrisno, Jac A. M. Vennix, Noor Syaifudin
Improving Renewable Energy Transition Acceptance: A Simulation Gaming Approach On A Multi Actor Setting In The Netherlands, Aziiz Sutrisno, Jac A. M. Vennix, Noor Syaifudin
Makara Journal of Technology
The Netherlands have tried very hard to increase their renewable energy sources (RES) shares to fulfill the European Union target in 2050. However, RES performance did not show the expected result as the performance declined in 2009 producing even wider gap compare to the target. The Dutch government’s tried to incorporate all interested stakeholders by forming the Dutch energy transition task force. Nevertheless, the task force’s result is also not showing a desirable trend. Key reasons behind the Dutch low RES performance are the lack of shared understanding and positive attitude toward RES development among interested actors. This research uses …
Oxidation Process Of H 2 O /Uv For Cod Reduction Of Wastewater From Soybean Tofu Production, Komala Pontas, Abrar Muslim
Oxidation Process Of H 2 O /Uv For Cod Reduction Of Wastewater From Soybean Tofu Production, Komala Pontas, Abrar Muslim
Makara Journal of Technology
Chemical Oxygen Demand (COD) reduction of wastewater from soybean tofu production was studied by conducting advanced oxidation process (AOP) using hydrogen peroxide with UV radiation catalysts in a closed cylindrical glass reactor. The hydroxyl radical (*OH) concentration from H2O2 decomposition was modeled, and exponential trends were found for the *OH concentration over radiation time and operation temperature. As a result, it was found that the maximal *OH concentration was 0.209 mol L-1 at 240 minutes and 50 °C. The *OH concentration exponentially increased following rise in operation temperature. The H2O2/UV AOP application reduced COD concentration to approximately 42.41% from 10,545 …
Uplift Of Shoreline Regions On Pagai Island Due To The September 12, 2007 Mw 8.4 Earthquake Captured By Sar Image, Ashar Muda Lubis
Uplift Of Shoreline Regions On Pagai Island Due To The September 12, 2007 Mw 8.4 Earthquake Captured By Sar Image, Ashar Muda Lubis
Makara Journal of Technology
At least 25 people were killed by the September 12, 2007 Mw 8.4 Bengkulu earthquake, and many buildings were destroyed in Bengkulu and West Sumatra provinces. It is very important to estimate the earth surface deformation due to the earthquake to understand the rupture size and its process. The aim of this research is to estimate the shoreline change and vertical displacement on Pagai Island associated with the September 12, 2007 Mw 8.4 Bengkulu earthquake. The intensity of ALOS-PALSAR satellite images is used to access the pattern of displacement. The result shows that Pagai Island demonstrated huge uplift due to …
Dual-Band Singly-Fed Proximity-Coupled Tip-Truncated Triangular Patch Array For Land Vehicle Mobile System, Basari Basari, Josaphat Tetuko Sri Sumantyo
Dual-Band Singly-Fed Proximity-Coupled Tip-Truncated Triangular Patch Array For Land Vehicle Mobile System, Basari Basari, Josaphat Tetuko Sri Sumantyo
Makara Journal of Technology
This paper proposes a dual-band left-handed circularly polarized triangular-patch array that is developed for land vehicle mobile system aimed at mobile satellite communications. The array consists of six tip-truncated triangular patches, which the first three patches are used for reception and the second three patches are used for transmission purpose. Each of three-patches has a beam pattern that can be switched in three different 120°-coverage beam in azimuth-cut plane at a minimum targeted gain at a desired elevation angle. The targeted minimum gain of the array is 5 dBic, in order for data communications with a large geostationary satellite can …
Improvement Of Quality Of Carica Papaya L. With Clove Oil As Preservative In Edible Coating Technology, Eny Kusrini, Anwar Usman, Chrispine Deksita Wisakanti, Rita Arbianti, Dedy Alharis Nasution
Improvement Of Quality Of Carica Papaya L. With Clove Oil As Preservative In Edible Coating Technology, Eny Kusrini, Anwar Usman, Chrispine Deksita Wisakanti, Rita Arbianti, Dedy Alharis Nasution
Makara Journal of Technology
We have studied utilization of essential clove oil, extracted from clove buds by hydrodistillation, as preservative in edible packaging technology. Preservative of essential clove oil was applied on chopped papaya fruits by using two methods, namely spray and brush. The effects of concentration of clove oil from 0.05 to 0.20% on the preservation of papaya fruits (Carica papaya L.) at room temperature (25 °C) were also evaluated. Physicochemical and in vitro microbiological activities on the papaya fruits that were stored at 25 oC and 85-90% relative humidity were investigated in details. The results indicate that the clove oil at concentration …
North American Standard For Cold-Formed Steel Framing -- Nonstructural Members, 2015 Edition, American Iron And Steel Institute
North American Standard For Cold-Formed Steel Framing -- Nonstructural Members, 2015 Edition, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
North American Standard For Cold-Formed Steel Structural Framing, 2015 Edition, American Iron And Steel Institute
North American Standard For Cold-Formed Steel Structural Framing, 2015 Edition, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
North American Standard For Seismic Design Of Cold-Formed Steel Structural Systems, 2015 Edition With Supplement 1, American Iron And Steel Institute
North American Standard For Seismic Design Of Cold-Formed Steel Structural Systems, 2015 Edition With Supplement 1, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.