TY - CONF TI - Comparison of classroom and video-based instruction: a case study for a graduate-level air pollution control course AU - Frey, H.Christopher C2 - 1996/// C3 - Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition DA - 1996/// UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0030313917&partnerID=MN8TOARS ER - TY - JOUR TI - Group-specific small subunit rRNA hybridization probes to characterize filamentous foaming in activated sludge systems T2 - Abstracts of the General Meeting of the American Society for Microbiology DA - 1996/// PY - 1996/// UR - https://publons.com/wos-op/publon/15001863/ ER - TY - JOUR TI - Determining the remaining life of a granular activated carbon (GAC) filter for pesticides AU - Knappe, D.R.U. AU - Snoeyink, V.L. AU - Matsui, Y. AU - Prados, M.J. AU - Bourbigot, M.-M. T2 - Water Supply DA - 1996/// PY - 1996/// VL - 14 IS - 2 SP - 1-14 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029657394&partnerID=MN8TOARS ER - TY - CONF TI - A Journey in Understanding Mixing and Flocculation AU - Clark, M.M. AU - Ducoste, J.J. T2 - American Water Works Association Virginia Section C2 - 1996/// C3 - Proceedings of the American Water Works Association Virginia Section CY - Williamsburg, Virginia DA - 1996/// PY - 1996/// ER - TY - CONF TI - Hydraulic Modeling for Improved CT Contactor Design AU - Crozes, G. AU - Hagstrom, J.P. AU - Clark, M.M. AU - Ducoste, J.J. AU - Hermanowicz, S.W. AU - Huntamer, J. T2 - American Water Works Association Annual Conference C2 - 1996/// C3 - Proceedings of the American Water Works Association Annual Conference CY - Toronto, Ontario, Canada DA - 1996/// PY - 1996/// ER - TY - CONF TI - Distribution of Microbial Populations in a Gasoline-Contaminated Sandy Aquifer AU - Kota, S. AU - Barlaz, M.A. AU - Borden, R.C. T2 - Annual Meeting of the American Society for Microbiology C2 - 1996/// CY - New Orleans, LA DA - 1996/// PY - 1996/5/19/ ER - TY - CONF TI - Biodegradation Potential of Alkylbenzenes and Phenols in Landfill Samples AU - Wang, Y.-S. AU - Barlaz, M.A. T2 - Annual Meeting of the American Society for Microbiology C2 - 1996/// CY - New Orleans, LA DA - 1996/// PY - 1996/5/19/ ER - TY - CONF TI - Effect of Temperature on Anaerobic Benzene and p-Xylene Biodegradation by a Mixed Microbial Population in Coastal Plain Aquifer Sediment AU - Hunt, M.J. AU - Borden, R.C. AU - Barlaz, M.A. T2 - Annual Meeting of the American Society for Microbiolgy C2 - 1996/// CY - New Orleans, LA DA - 1996/// PY - 1996/5/19/ ER - TY - CONF TI - Natural Bioremediation of Petroleum Hydrocarbons AU - Borden, R.C. AU - Barlaz, M.A. T2 - Solutions: A Technical Conference on Water Quality C2 - 1996/3/19/ CY - North Carolina State University, Raleigh, NC DA - 1996/3/19/ PY - 1996/3/19/ ER - TY - SOUND TI - Current Estimates of Global Methane Emissions from Landfills AU - Barlaz, M.A. DA - 1996/// PY - 1996/// ER - TY - CONF TI - Measurement of Polymer Biodegradability Under Anaerobic Conditions AU - Barlaz, M.A. T2 - International Symposium on Bacterial Polyhydroxyalkanoates '96 C2 - 1996/// CY - Davos, Switzerland DA - 1996/// PY - 1996/8/18/ ER - TY - CONF TI - Natural Bioremediation of Petroleum Hydrocarbons AU - Barlaz, M.A. AU - Borden, R.C. T2 - Bioremediation in the Saturated Subsurface C2 - 1996/2/5/ CY - University of New Hampshire, Durham, NH DA - 1996/2/5/ PY - 1996/2/5/ ER - TY - JOUR TI - Anaerobic Biodegradation of Hazardous Organics in Groundwater Down Gradient of a Sanitary Landfill AU - Johnston, J.J. AU - Borden, R.C. AU - Barlaz, M.A. T2 - Journal of Contaminant Hydrology DA - 1996/// PY - 1996/// VL - 23 IS - 4 SP - 263-283 ER - TY - CONF TI - Evaluation of the Anaerobic Biodegradability of Radiolabeled Test Materials in a Laboratory-Scale Simulated Landfill AU - Barlaz, M.A. AU - Bonner, B.A. AU - Calvert, P.P. T2 - Institute for Scientific Research, American Society for Testing and Materials C2 - 1996/// CY - Philadelphia, PA DA - 1996/// PY - 1996/// ER - TY - CONF TI - Development of Alternative Integrated Solid Waste Management Strategies in Consideration of Economic and Environmental Factors AU - Barlaz, M.A. AU - Brill, E.D. AU - Dumas, R. AU - Harrison, K. AU - Kosmicki, B. AU - Ranjithan, S.R. AU - Solano, E. T2 - Twelfth International Conference on Solid Waste Management and Secondary Materials C2 - 1996/12/11/ CY - Philadelphia, PA DA - 1996/12/11/ PY - 1996/12/11/ ER - TY - CONF TI - Life-Cycle Assessment of a Municipal Solid Waste Landfill AU - Coulon, R. AU - Barlaz, M.A. AU - Ham, R.K. T2 - Society of Environmental Toxicology And Chemistry (SETAC) World Congress C2 - 1996/// CY - Washington, DC DA - 1996/// PY - 1996/11/17/ ER - TY - CONF TI - Life Cycle Study of Municipal Solid Waste Management AU - Weitz, K. AU - Nishtala, S.R. AU - Thorneloe, S. AU - Barlaz, M. T2 - Society of Environmental Toxicology And Chemistry (SETAC) World Congress C2 - 1996/// CY - Washington, D. C DA - 1996/// PY - 1996/11/17/ ER - TY - CONF TI - Polymer Biodegradation Under Simulated Landfill Conditions AU - Bonner, B.A. AU - Calvert, P.P. AU - Pettigrew, C.A. AU - Barlaz, M.A. T2 - 5th Annual Meeting of the Bio/Environmentally Degradable Polymer Society C2 - 1996/// CY - Nashville, TN DA - 1996/// PY - 1996/9/22/ ER - TY - CONF TI - Anaerobic Isolation and Characterization of Methanogens from Laboratory-Scale Reactors and Municipal Landfill Refuse AU - Ladapo, J.A. AU - Barlaz, M.A. T2 - Annual Meeting of the American Society for Microbiology C2 - 1996/// CY - New Orleans, LA DA - 1996/// PY - 1996/5/19/ ER - TY - JOUR TI - Horizontal Connections for Precast Concrete Shear Wall Panels Under Cyclic Shear Loading AU - Soudki, K. AU - West, J. AU - Rizkalla, S. AU - Blackett, B. T2 - PCI Journal DA - 1996/5// PY - 1996/5// VL - 41 IS - 3 SP - 64–72 ER - TY - CONF TI - Evaluation of Sampling Properties of General Extreme Value (GEV) Distribution-L-Moments Vs Conventional Moments AU - Sankarasubramanian, A. AU - Srinivasan, K. T2 - 24th Annual Water Resource Policy Management (WRPM) Conference C2 - 1996/// C3 - Proceedings of the 24th Annual WRPM conference CY - Anaheim, CA DA - 1996/// PY - 1996/// ER - TY - JOUR TI - Finite element analysis of bolted connections for PFRP composites AU - Hassan, Nahla K. AU - Mohamedien, Mohamed A. AU - Rizkalla, Sami H. T2 - Composites Part B: Engineering AB - Structural applications of composite laminates are increasing with the drive for high strength, lightweight component design. These applications usually require joining composites either to composites or metals. Most commonly, joints are formed using mechanical fasteners. Therefore suitable prediction methods must be developed to determine failure strength and failure modes of these bolted connections. In this paper, three-dimensional finite element analysis is conducted on single and multi-bolted connections to determine the failure process, ultimate load and load distribution among the fasteners, taking into consideration bolt-hole contact problem in the finite element model. The strength analysis is based on Tsai-Wu tensor polynomial failure criterion which is applied to the laminate as a whole. DA - 1996/1// PY - 1996/1// DO - 10.1016/1359-8368(95)00046-1 VL - 27 IS - 3-4 SP - 339-349 J2 - Composites Part B: Engineering LA - en OP - SN - 1359-8368 UR - http://dx.doi.org/10.1016/1359-8368(95)00046-1 DB - Crossref KW - composite materials KW - composite laminates KW - bolted connections KW - finite element KW - tensor polynomial failure criterion ER - TY - JOUR TI - Neural network model for the automated control of springback in rebars AU - Dunstan, P.S. AU - Ranjithan, S.R. AU - Bernold, L.E. T2 - IEEE Expert AB - Automating the process of cold-bending steel reinforcing bars for concrete structures can save time, prevent serious injuries, and increase productivity. Neural network models can play a key role in the adaptive control of this process. DA - 1996/8// PY - 1996/8// DO - 10.1109/64.511776 VL - 11 IS - 4 SP - 45-49 J2 - IEEE Expert LA - en OP - SN - 0885-9000 UR - http://dx.doi.org/10.1109/64.511776 DB - Crossref ER - TY - CHAP TI - Microbiology of Solid Waste Landfills AU - Barlaz, M.A. T2 - Microbiology of Solid Waste A2 - Palmisano, A.C. A2 - Barlaz, M.A. PY - 1996/// SP - 31 – 70 PB - CRC Press ER - TY - CHAP TI - Introduction AU - Palmisano, A.C. AU - Barlaz, M.A. T2 - Microbiology of Solid Waste A2 - Palmisano, A.C. A2 - Barlaz, M.A. PY - 1996/// SP - 1 – 30 PB - CRC Press ER - TY - JOUR TI - Flood Frequency Models for Indian Catchments– A Relook AU - Srinivasan, K. AU - Sankarasubramanian, A. T2 - Journal of the Institution of Engineers DA - 1996/// PY - 1996/// VL - 77 SP - 41–46 ER - TY - JOUR TI - Enumeration of Anaerobic Refuse-Decomposing Micro-Organisms On Refuse Constituents AU - Qian, Xingdong AU - Barlaz, Morton A. T2 - Waste Management & Research AB - Hydrolytic, acetogenic and methanogenic bacteria are required for the conversion of refuse to methane in landfills. In order to identify sources of these trophic groups in refuse, the total anaerobic population and the sub-populations of cellulolytic, hemicellulolytic, butyrate catabolizing acetogenic, and acetate- and H 2 -CO 2 -utilizing methanogenic bacteria as present on grass, leaves, branches, food waste, whole refuse and two landfill cover soils were enumerated by the most probable number (MPN) technique. Total anaerobes ranged from 10 3 cells per dry gram in cover soil to 10 9 in grass, food waste and fresh refuse. Hemicellulolytics ranged from 160 cells per dry gram in cover soil to 10 9 in grass. The highest cellulolytic population was measured on branches (316 cells per dry gram), while the maximum acetogenic population was measured on leaves (2.5 x 10 4 ). The highest methanogen populations were measured on leaves (6.3 x 10 3 ) and one of two fresh refuse samples (10 5 ). Yard waste was the major carrier of the trophic groups required for refuse decomposition, while the cover soils tested did not represent major inputs of the requisite bacteria to landfills. © 1996 ISWA DA - 1996/3// PY - 1996/3// DO - 10.1177/0734242x9601400205 VL - 14 IS - 2 SP - 151-161 J2 - Waste Manag Res LA - en OP - SN - 0734-242X 1096-3669 UR - http://dx.doi.org/10.1177/0734242x9601400205 DB - Crossref ER - TY - CONF TI - Uncertainty, bias, and variability in emission factors for light duty gasoline vehicles AU - Frey, H.Christopher AU - Kini, Mitesh D. AU - Ranjithan, S.Ranji AU - Fu, Sing-Yih C2 - 1996/// C3 - Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition DA - 1996/// UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-17544390686&partnerID=MN8TOARS ER - TY - CONF TI - Probabilistic modeling and optimization of clean coal technologies: case studies of the externally-fired combined cycle AU - Frey, H.Christopher AU - Agarwal, Pankaj C2 - 1996/// C3 - Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition DA - 1996/// UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0030314477&partnerID=MN8TOARS ER - TY - CONF TI - Probabilistic analysis and optimization of new power generation technologies: a case study for the externally-fired combined cycle AU - Frey, H.Christopher AU - Agarwal, Pankaj C2 - 1996/// C3 - Proceedings of the American Power Conference DA - 1996/// VL - 1 SP - 52-57 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029707721&partnerID=MN8TOARS ER - TY - CONF TI - Optimization of environmental control system design for an IGCC power plant AU - Diwekar, Urmila M. AU - Rubin, Edward S. AU - Frey, H.Christopher C2 - 1996/// C3 - Proceedings of the American Power Conference DA - 1996/// VL - 1 SP - 58-63 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029706671&partnerID=MN8TOARS ER - TY - CONF TI - Methods for evaluating the costs of utility NOx control technologies AU - Tran, Loan K. AU - Frey, H.Christopher C2 - 1996/// C3 - Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition DA - 1996/// UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0030315356&partnerID=MN8TOARS ER - TY - JOUR TI - Characterizing, simulating, and analyzing variability and uncertainty: An illustration of methods using an air toxics emissions example AU - Frey, H.C. AU - Rhodes, D.S. T2 - Human and Ecological Risk Assessment (HERA) DA - 1996/// PY - 1996/// VL - 2 IS - 4 SP - 762-797 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-21444446390&partnerID=MN8TOARS ER - TY - JOUR TI - Group-specific small subunit rRNA hybridization probes to characterize filamentous foaming in activated sludge systems AU - De Los Reyes, F. L. AU - Ritter, W. AU - Raskin, L. AU - Amann, R. I. T2 - Abstracts of the General Meeting of the American Society for Microbiology DA - 1996/// PY - 1996/// VL - 96 IS - 0 SP - 391 UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=BCI&KeyUT=BCI:BCI199698816724&KeyUID=BCI:BCI199698816724 ER - TY - CONF TI - Verifying the timing requirements of multiprocessor control systems C2 - 1996/// C3 - Proceedings of the Conference on Analysis and Computation DA - 1996/// SP - 278-285 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029736047&partnerID=MN8TOARS ER - TY - JOUR TI - Verification of an active control system using temporal process Algebra T2 - Engineering with Computers DA - 1996/// PY - 1996/// VL - 12 IS - 1 SP - 46-61 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029753271&partnerID=MN8TOARS ER - TY - JOUR TI - Network-distributed finite element analysis T2 - Advances in Engineering Software DA - 1996/// PY - 1996/// VL - 25 IS - 2-3 SP - 267-280 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0030102588&partnerID=MN8TOARS ER - TY - CONF TI - Formal specification of concurrent finite element systems C2 - 1996/// C3 - Proceedings of the Conference on Analysis and Computation DA - 1996/// SP - 166-176 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-0029735025&partnerID=MN8TOARS ER - TY - CONF TI - A controlled comparison of traditional classroom instruction with computer based instruction in an engineering class C2 - 1996/// C3 - ASEE Annual Conference Proceedings DA - 1996/// SP - 31-35 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-8744254801&partnerID=MN8TOARS ER - TY - CONF TI - Vertical drains in geotechnical engineering: state of the art review AU - Gabr, M. A. AU - Quaranta, J. D. AU - Cook, E. E. C2 - 1996/// C3 - The proceedings of the Seventh (1997) International Offshore and Polar Engineering Conference :presented at the Seventh (1996) International Offshore and Polar Engineering Conference held in Honolulu, USA, May 25-30, 1997 Offshore and Polar Engineers (ISO) DA - 1996/// PB - Golden, CO: The Society SN - 9781880653289 ER - TY - JOUR TI - Underseepage analysis of levees on two-layer and three-layer foundation AU - Gabr, MA AU - Wolff, TF AU - Brizendine, AL AU - Taylor, HM T2 - COMPUTERS AND GEOTECHNICS AB - A simplified numerical model for the analysis of levee underseepage is developed and presented. Idealization of the subsurface hydrogeologic conditions was achieved using two-layer and three-layer representation of the flow domain. Data from Magnolia levee, located in Magnolia, Ohio, were used to demonstrate the model applicability by comparing exit hydraulic gradient (i) values from the simplified model to predictions from 2-D finite element analysis (FEA). Results from the simplified model indicated that i values were merely dependent on the ratio of the foundation permeability (Kfx) to the blanket permeability (Kby). The i values from the FEA closely matched those from the simplified model for Kfx/Kby ratios less than 2000 and assuming permeability anisotropic ratio (rk) = 1. Piezometer data from the Sny Island levee, located in Quincy, Illinois, were used to demonstrate the applicability of the three-layer model. DA - 1996/// PY - 1996/// DO - 10.1016/0266-352x(95)00024-5 VL - 18 IS - 2 SP - 85-107 SN - 0266-352X ER - TY - CONF TI - Retention and permeation of fly ash using nonwoven geotextiles AU - Gabr, M. A. AU - Akram, M. A2 - Lafleur, J. A2 - Rollin, A. L. C2 - 1996/// C3 - Geofilters '96 :Comptes rendus DA - 1996/// PB - Montreal: Ecole polytechnique SN - 9782553005619 ER - TY - JOUR TI - Model for Efficiency of Soil Flushing Using PVD-Enhanced System AU - Gabr, M. A. AU - Wang, J. AU - Bowders, J. J. T2 - Journal of Geotechnical Engineering AB - A predictive model for drain-enhanced soil flushing is developed and presented. Results from a parametric study indicate that, as the depth of the contaminated zone ( H ) increases, the time needed to attain 50% clean up level ( t50 ) increases. Results also indicated the sensitivity of the predicted contaminant concentrations to variations in the partition coefficient ( K d ) and radial and vertical dispersivity (αr and αZ). For the case of αZ= 1 m, t50 is evaluated equal to 42 h, while a t50 of 55 h is predicted for αZ= 0.1 m. The estimated t50 increases from 37 h for αr= 10 m to 61 h for αr= 0.1 m. Analyses and results presented in this paper indicate the feasibility of using the proposed model to predict soil flushing rate using PVD-enhanced system. DA - 1996/11// PY - 1996/11// DO - 10.1061/(asce)0733-9410(1996)122:11(914) VL - 122 IS - 11 SP - 914-919 ER - TY - CONF TI - Kinetics of naphthalene removal from sand and kaolinite/sand soils using SDS surfactant AU - Gabr, M. A. AU - Thomas, R. AU - Cook, E. E. AU - Shoblom, K. A2 - J. Lafleur, A2 - Rollin, A. L. C2 - 1996/// C3 - The proceedings of the Sixth (1996) International Offshore and Polar Engineering Conference :presented at the Sixth (1996) International Offshore and Polar Engineering Conference held in Los Angeles, USA, May 26-31, 1996 DA - 1996/// PB - Golden, Colo. : International Society of Offshore and Polar Engineers (ISOPE) SN - 9781880653227 ER - TY - CONF TI - Injectability and durability of urethane as a permeation grout for subsurface containment of waste AU - Gabr, M. A. AU - Freshwater, J. S. AU - Cook, E. E. C2 - 1996/// C3 - Proceedings of the International Topical Meeting on Nuclear and Hazardous Waste Management-Spectrum '96 :August 18-23, 1996, Seattle, Washington DA - 1996/// PB - La Grange Park, Ill. : American Nuclear Society SN - 9780894486142 ER - TY - JOUR TI - In situ soil flushing using prefabricated vertical drains AU - Gabr, MA AU - Bowders, JJ AU - Wang, J AU - Quaranta, J T2 - CANADIAN GEOTECHNICAL JOURNAL AB - The use of prefabricated vertical drains (PVDs) for enhanced soil flushing was investigated using a bench scale experimental setup. Soil samples were prepared and saturated in contaminant recovery cells (CRC). The PVDs were installed in rectangular and circular configurations, and a vacuum was applied to recover subsurface water. A predictive model for contaminant transport using the PVD-enhanced soil flushing was developed and presented. Results from the CRC tests using four PVDs in a rectangular arrangement indicated that the volume of the retrieved fluid increased as a function of the vacuum level and was approximately 0.55 mL/s at a vacuum level of 9.0 kPa. This represented a recovery efficiency of approximately 100%, since the base inflow through the sample was 0.55 mL/s. Using six PVDs in a circular configuration with a spacing of 14 mm from the center of the circle, a flow rate of approximately 6 mL/s was recovered under 6.8 kPa of vacuum. The average drawdown under a vacuum of 8.6 kPa ranged from 15 to 45 mm, and the zone of effective drawdown was measured to be approximately 200 mm in diameter. This value is approximately 10 times the effective diameter of the PVDs. An injection–extraction test indicated that, under an applied injection pressure of 3.5 kPa, an injection flow rate of approximately 6.5 mL/s was measured. At a vacuum pressure of 6 kPa and using the cicular configuration, the injection and recovery flow rates were approximately balanced. Such balance is essential to avoid decreasing the flushing rate due to the compression of the soil voids as well as to avoid the desaturation of soil profile. Key words: contaminant transport, injection, model, prefabricated vertical drains, retardation, soil flushing, vacuum. DA - 1996/2// PY - 1996/2// DO - 10.1139/t96-026 VL - 33 IS - 1 SP - 97-105 SN - 0008-3674 KW - contaminant transport KW - injection KW - model KW - prefabricated vertical drains KW - retardation KW - soil flushing KW - vacuum ER - TY - JOUR TI - Fly ash-based mixtures for low permeability grouts stabilized with lime sludge AU - Gabr, M. A. AU - Boury, E. M. AU - Butler, C. T2 - Geotechnical News DA - 1996/// PY - 1996/// VL - 14 IS - 1 ER - TY - CONF TI - Developments in prefabricated vertical drain enhanced soil flushing AU - Quaranta, J. D. AU - Gabr, M. A. AU - Szabo, D. AU - Hewes, K. AU - Cook, E. E. C2 - 1996/// C3 - The proceedings of the Seventh (1997) International Offshore and Polar Engineering Conference :presented at the Seventh (1996) International Offshore and Polar Engineering Conference held in Honolulu, USA, May 25-30, 1997 Offshore and Polar Engineers (ISO) DA - 1996/// PB - Golden, CO: The Society SN - 9781880653289 ER - TY - CONF TI - Development of fly ash-based low permeability flowable fill AU - Gabr, M. A. AU - Butler, C. S. T2 - 3rd International Symposium on Environmental Geotechnology A2 - Inyang, H. I. A2 - Fang, H.-Y. C2 - 1996/// C3 - Environmental geotechnology :proceedings of the 3rd International Symposium CY - San Diego, CA DA - 1996/// PY - 1996/// VL - 1 SP - 426-435 PB - Technomic Pub. Co. SN - 9781566764629 ER - TY - CONF TI - Clogging and piping criteria for geotextile filters with fly ash AU - Gabr, M. A. AU - Akram, M. T2 - 3rd International Symposium on Environmental Geotechnology A2 - Inyang, H. I. A2 - Fang, H.-Y. C2 - 1996/// C3 - Environmental geotechnology :proceedings of the 3rd International Symposium CY - San Diego, CA DA - 1996/// PY - 1996/// VL - 1 SP - 836-847 PB - Technomic Pub. Co. SN - 9781566764629 ER - TY - RPRT TI - Pilot study for improving undergraduate advising: Summary and analysis AU - Rasdorf, W. AU - Janisch, A. J. A3 - Raleigh, N.C.: Department of Civil Engineering, North Carolina State University DA - 1996/// PY - 1996/// PB - Raleigh, N.C.: Department of Civil Engineering, North Carolina State University ER - TY - RPRT TI - Improved guidelines and models for traditional advising of undergraduate students AU - Rasdorf, W. AU - Janisch, A. J. A3 - Raleigh, N.C.: Department of Civil Engineering, North Carolina State University DA - 1996/// PY - 1996/// PB - Raleigh, N.C.: Department of Civil Engineering, North Carolina State University ER - TY - JOUR TI - Anaerobic biodegradation of alkylbenzenes and trichloroethylene in aquifer sediment down gradient of a sanitary landfill AU - Johnston, James J. AU - Borden, Robert C. AU - Barlaz, Morton A. T2 - Journal of Contaminant Hydrology AB - The objective of this investigation was to evaluate the anaerobic biodegradability of benzene, toluene, ethylbenzene, ortho-, meta- and para-xylene (BTEX) and trichloroethylene (TCE) in aquifer sediment down gradient of an unlined landfill. The major organic contaminants identified in the shallow unconfined aquifer are cis-dichloroethylene (c-DCE) and toluene. The biodegradative potential of the contaminated aquifer was measured in three sets of microcosms constructed using anaerobic aquifer sediment from three boreholes down gradient of the landfill. The degradability of BTEX and TCE was examined under ambient and amended conditions. TCE was degraded in microcosms with aquifer material from all three boreholes. Toluene biodegradation was inconsistent, exhibiting biodegradation with no lag in one set of microcosms but more limited biodegradation in two additional sets of microcosms. TCE exhibited an inhibitory effect on toluene degradation at one location. The addition of calcium carbonate stimulated TCE biodegradation which was not further stimulated by nutrient addition. TCE was converted to ethylene, a harmless byproduct, in all tests. Benzene, ethylbenzene and xylene isomers were recalcitrant in both ambient and amendment experiments. Biodegradation occurred under methanogenic conditions as methane was produced in all experiments. Bromoethane sulfonic acid (BES), a methanogenic inhibitor, inhibited methane and ethylene production and TCE biodegradation. The results indicate the potential for intrinsic bioremediation of TCE and toluene down gradient of the Wilder's Grove, North Carolina, landfill. The low concentrations of TCE in monitoring wells was consistent with its biodegradation in laboratory microcosms. DA - 1996/8// PY - 1996/8// DO - 10.1016/0169-7722(95)00103-4 VL - 23 IS - 4 SP - 263-283 J2 - Journal of Contaminant Hydrology LA - en OP - SN - 0169-7722 UR - http://dx.doi.org/10.1016/0169-7722(95)00103-4 DB - Crossref ER - TY - JOUR TI - Entity-relationship modeling of composite materials data AU - Spainhour, L. K. AU - Rasdorf, W. J. T2 - Journal of Computing in Civil Engineering AB - Material properties data, particularly that of advanced composite materials such as fiber-reinforced plastics, provides a complex domain which is difficult to computerize. To aid in this process, a formal conceptual data model was designed. The contribution of this model is that it encompasses the data needs of civil and structural engineers throughout the life cycle of a composite material component. The data model was created using the entity-relationship methodology, and can be used to support automated data exchange and database development. Other issues addressed in this paper include assessing the suitability of the entity-relationship model for composite materials data, assessing and maintaining the quality of a data set, and modeling special types of data applicable to composite materials. DA - 1996/// PY - 1996/// DO - 10.1061/(asce)0887-3801(1996)10:3(226) VL - 10 IS - 3 SP - 226-235 ER - TY - JOUR TI - A review and assessment of the Journal of Computing in Civil Engineering AU - Lakmazaheri, S. AU - Rasdorf, W. J. T2 - Journal of Computing in Civil Engineering DA - 1996/// PY - 1996/// VL - 10 IS - 2 SP - 95-96 ER - TY - BOOK TI - Continuum mechanics. (PWS series in engineering) AU - McDonald, P. H. CN - QA808.2 .M385 1996 DA - 1996/// PY - 1996/// PB - Boston: PWS Pub. Co SN - 0534939848 ER - TY - JOUR TI - A comparative study of hardening theories in torsion using the Taylor polycrystal model AU - Lin, G AU - Havner, KS T2 - INTERNATIONAL JOURNAL OF PLASTICITY AB - A study of five rate-independent hardening rules (from Taylor and Elam (“The Distortion of an Aluminium Crystal during a Tensile Test”, Proc. R. Soc. Lond. (1923), A102, 643) to Bassani and Wu (“Latent Hardening in Single Crystals II. Analytical Characterization and Predictions,” Proc. R. Soc. Lond. (1991), A435, 21)) is presented based upon the classic Taylor polycrystal model in finite strain torsion. Comparisons of aggregate shear stress-strain curves, evolving crystallographic textures, yield loci, and axial stresses among the theories are made; and results are assessed against experiments on polycrystalline copper from the literature. DA - 1996/// PY - 1996/// DO - 10.1016/S0749-6419(96)00025-3 VL - 12 IS - 5 SP - 695-718 SN - 0749-6419 ER -