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Articles 10141 - 10170 of 11789
Full-Text Articles in Engineering
Experimental Evaluation Of J-Integral For Concrete Subjected To Impact Loading, Naishan Zhang
Experimental Evaluation Of J-Integral For Concrete Subjected To Impact Loading, Naishan Zhang
Theses
This thesis presents an experimental evaluation of J-integral for concrete subjected to impact loading. Twenty four three-point bend specimens with two different thicknesses and mid-span notch lengths were tested under impact velocities of 167.22 in/sec (424.74 cm/sec) and 261.78 in/sec (664.92 cm/sec). Multi specimen method was used to analyze and estimate JI and its critical J-Ic values. Effects of specimen thickness and impact velocity on J-Ic values were observed and discussed. Evaluation of J-Ic Values from the experimental results of this study indicated that can be characterized as a material constant even under different impact velocities. …
Feasibility Study Of Maine's Small Hydropower Potential, James D. Sysko
Feasibility Study Of Maine's Small Hydropower Potential, James D. Sysko
Maine Collection
Feasibility Study of Maine's Small Hydropower Potential
Prepared by James D. Sysko, Small Hydro East, for the Maine State Planning Office, Maine Office of Energy Resources, January 1989.
"This study focuses on finding potential hydropower sites of approximately 50 kw to 1000 kw in capacity."
Traffic Speed Report No. 122, David L. Cochran, Leroy Gray, Donald W. Genda
Traffic Speed Report No. 122, David L. Cochran, Leroy Gray, Donald W. Genda
JTRP Technical Reports
No abstract provided.
1988 Update Of The Indiana Highway Cost Allocation Study, Kumares C. Sinha, Sunil K. Saha, Tien Fang Fwa, Ah Beng Tee, Harold L. Michael
1988 Update Of The Indiana Highway Cost Allocation Study, Kumares C. Sinha, Sunil K. Saha, Tien Fang Fwa, Ah Beng Tee, Harold L. Michael
JTRP Technical Reports
No abstract provided.
Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques: Executive Summary, Donn Edward Hancher, Thomas D. White, David Thomas Iseley
Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques: Executive Summary, Donn Edward Hancher, Thomas D. White, David Thomas Iseley
JTRP Technical Reports
No abstract provided.
Speed Trends On Indiana Rural Interstate Highways: Traffic Research Report, David L. Cochran
Speed Trends On Indiana Rural Interstate Highways: Traffic Research Report, David L. Cochran
JTRP Technical Reports
No abstract provided.
Bond Of Epoxy Coated Reinforcing Steel In Concrete Bridge Decks : Informational Report, Douglas Bruce Cleary, J. A. Ramirez
Bond Of Epoxy Coated Reinforcing Steel In Concrete Bridge Decks : Informational Report, Douglas Bruce Cleary, J. A. Ramirez
JTRP Technical Reports
No abstract provided.
Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques, Donn Edward Hancher, Thomas D. White, David Thomas Iseley
Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques, Donn Edward Hancher, Thomas D. White, David Thomas Iseley
JTRP Technical Reports
No abstract provided.
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 3 - Bridge Traffic Safety Evaluation, Sudhir Murthy, Kumares C. Sinha
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 3 - Bridge Traffic Safety Evaluation, Sudhir Murthy, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
An Investigation Of Surface Coatings On Exposed Concrete : Executive Summary, Luh M. Chang, Peter Scott Garner
An Investigation Of Surface Coatings On Exposed Concrete : Executive Summary, Luh M. Chang, Peter Scott Garner
JTRP Technical Reports
No abstract provided.
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 6 - Performance Analysis And Optimization, Yi Jiang, Kumares C. Sinha
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 6 - Performance Analysis And Optimization, Yi Jiang, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
An Evaluation Of Leading Vs. Lagging Left Turn Signal Phasing : Executive Summary, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha
An Evaluation Of Leading Vs. Lagging Left Turn Signal Phasing : Executive Summary, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
Development Of Asphaltic Concrete Overlay Design Procedure For Rigid Pavements In Indiana, Norman D. Pumphrey, Thomas D. White
Development Of Asphaltic Concrete Overlay Design Procedure For Rigid Pavements In Indiana, Norman D. Pumphrey, Thomas D. White
JTRP Technical Reports
No abstract provided.
An Investigation Of Surface Coatings On Exposed Concrete, Luh M. Chang, Peter Scott Garner
An Investigation Of Surface Coatings On Exposed Concrete, Luh M. Chang, Peter Scott Garner
JTRP Technical Reports
No abstract provided.
Laboratory Investigations On Latex-Modified Concrete : Executive Summary, Sidney Diamond, Qizhong Sheng
Laboratory Investigations On Latex-Modified Concrete : Executive Summary, Sidney Diamond, Qizhong Sheng
JTRP Technical Reports
No abstract provided.
Laboratory Investigations On Latex-Modified Concrete, Sidney Diamond, Qizhong Sheng
Laboratory Investigations On Latex-Modified Concrete, Sidney Diamond, Qizhong Sheng
JTRP Technical Reports
No abstract provided.
Engineering Soils Map Of Adams County, Indiana, Arvind Chaturvedi
Engineering Soils Map Of Adams County, Indiana, Arvind Chaturvedi
JTRP Technical Reports
No abstract provided.
Time Characteristics Of Small Watersheds In Response To The Probable Maximum Precipitation, Brian Jay Swenty
Time Characteristics Of Small Watersheds In Response To The Probable Maximum Precipitation, Brian Jay Swenty
Doctoral Dissertations
"The EPA Storm Water Management Model (SWMM) was used to perform single event simulations of Probable Maximum Precipitation (PMP) level rainfall events on the Loss Lake watershed in southcentral Missouri. Overland flow was simulated using kinematic wave routing and channel flow was simulated using dynamic wave routing.
Lag time was defined as the time between the centroid of the excess rainfall hyetograph and the centroid of the direct runoff hydrograph.
Rainfall depth, rainfall duration, and the distribution of rainfall intensity were found to be significant predictor variables for lag time. Defined as hydrologic parameters for this study, channel flow roughness, …
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 2 - A System For Bridge Structural Condition Assessment, Ah Beng Tee, Mark D. Bowman, Kumares C. Sinha
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 2 - A System For Bridge Structural Condition Assessment, Ah Beng Tee, Mark D. Bowman, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 5 - Priority Ranking Method : Executive Summary And Final Report, Mitsuru Saito, Kumares C. Sinha
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 5 - Priority Ranking Method : Executive Summary And Final Report, Mitsuru Saito, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 4 - Cost Analysis : Executive Summary And Final Report, Mitsuru Saito, Kumares C. Sinha
The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 4 - Cost Analysis : Executive Summary And Final Report, Mitsuru Saito, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
An Evaluation Of Leading Versus Lagging Left Turn Signal Phasing, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha
An Evaluation Of Leading Versus Lagging Left Turn Signal Phasing, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
Adsorption Of Organic Compounds By Microbial Biomass, Ariamalar Selvakumar
Adsorption Of Organic Compounds By Microbial Biomass, Ariamalar Selvakumar
Dissertations
The adsorption of hazardous organic compounds such as phenol, 2-chlorophenol, 2-nitrophenol, chlorobenzene, and ethylbenzene onto two types of inactive microbial biomass (activated sludge and nitrifying bacteria) was studied. The adsorption isotherms could be expressed by the Freundlich adsorption isotherm and were found to be nearly linear over the range of concentrations (50 - 200 mg/1) studied. Desorption studies showed that the adsorption process was partially reversible. Heat of sorption was estimated and indicate that the biosorption process involves a physical rather than a chemical mechanism. The adsorptive capacity of biomass is about two to three orders of magnitude less than …
The Evaluation Of The Impact Of Reducing The Domestic Wastewater Phosphorus On The Algal-Related Water Quality Of The Hudson/Raritan Estuary And Northern New Jersey's Coastal Waters, Ron Gautreau
Theses
An investigation was undertaken to examine the planktonic algal-related water quality of the Hudson/Raritan Estuary and northern New Jersey's coastal waters with respect to quantifying the relationship between the amount of phosphorus loading to the planktonic algal-related water quality responses. Recreational and commercial uses of northern New Jersey's coastal waters have at times been impaired by excessive growth of planktonic algae. Using population equivalents and export coefficients the amount of domestic wastewater and land runoff derived phosphoruscontributed to the Estuary was estimated. The P load contributed to the Estuary via the discharge of New York and New Jersey domestic wastewater …
Behavior Of Ductile Materials Under Impulsive Loading, M. Y. Brunner
Behavior Of Ductile Materials Under Impulsive Loading, M. Y. Brunner
Tanzania Journal of Engineering and Technology (TJET)
Ductile materials under dynamic loading are known to be able to absorb energy and thereby delay or even prevent structural failure. This paper is concerned with such behaviour in the case of impulsive loads of short duration. It is shown that even when the feared, unstable, labile condition is attained, failure may not necessarily occur. This behaviour is particularly impressive for structures with large mass, because it is essentially the mass which slows down the attainment of the failure strains. If the impulsive load dies away quickly enough, the constant plastic resistance will be adequate to bring the increasing deformations …
Co-Metabolism Of Pentachlorophenol With Glucose Using Two-Stage Anaerobic Activated Carbon Fluidized Beds, Zen Wang
Theses
Abstract - Detoxification of pentachlorophenol by using a two-stage anaerobic biological activated carbon fluidized bed has been investigated. Glucose was introduced as a cosubstrate to determine the relationship between the glucose/PCP ratio and the extent of PCP detoxification in such a system. This system has been proved to be effective in the removal of both PCP and COD. Ratio of glucose to PCP predominates the performance of the system throughout the whole course of this experiment. At a glucose/PCP ratio of 0.33, the system has a highest reduction of both PCP and COD. Addition of glucose to the highly PCP …
Decontamination Of Contaminated Clay Soils By Thermal Treatment, Chandrakanthi Weerasinghe
Decontamination Of Contaminated Clay Soils By Thermal Treatment, Chandrakanthi Weerasinghe
Theses
An experimental investigation on the desorption of contaminated clay soils by thermal treatment was performed. This study was carried out on two clay soils (kaolinite and bentonite) sorbed with three liquid organic compounds (phenol, chlorophenol, and chlorobenzene). The study consists of two different phases, the adsorption and desorption. The results on batch equilibrium adsorption were correlated with different isotherm models of which the Freundlich isotherm model was found to be best fit in predicting adsorption capacities of kaolinite, and that for bentonite was found to be the linear isotherm model.
A thermal desorption study followed the equilibrium adsorption study. A …
Unsaturated Column Studies Of Silty Sand Using A Conservative Tracer, Canagasabapathy Nallianathan
Unsaturated Column Studies Of Silty Sand Using A Conservative Tracer, Canagasabapathy Nallianathan
Theses
A laboratory study was conducted to investigate the flow and mass transport of a conservative tracer in the unsaturated phase. For this purpose, a relatively "large-scale" cylindrical column(12 in. O.D. x 4 feet long) was fabricated and equipped with tensiometer and psychrometer sensors.
The soil used in the study was a New Jersey based silty sand compacted to an average dry density of 93 lb/ft3. The soil was permeated with a 0.5 M NaCl solution infiltrated at the top of the column using a perforated spiral tube assembly. The permeant was applied at a constant rate of approximately …