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Articles 36151 - 36180 of 39915
Full-Text Articles in Civil and Environmental Engineering
An Investigation Of The Dynamic Response Of The Activated Sludge Process, Tin-Bai Pan
An Investigation Of The Dynamic Response Of The Activated Sludge Process, Tin-Bai Pan
Dissertations
A new mathematical model, derived from first principles of mass balance, is proposed for describing the mass transfer response of an activated sludge aeration tank in terms of a fluidized bed. The operational data to verify the proposed model were taken from an existing conventional wastewater treatment plant and a bench scale pilot plant.
The mass transfer rate, (KdAs), was presented by an empirical dimensionless group function as follows:
((KdAs)Dp/Dv) = fAc (uDp/ν)a ((ν/Dν)(MLSS))b
Or
Sh = f(Ac/As ) …
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletins - 3000 - 3999
Irrigation is essential in many parts of the world to produce essential food and profitable cash crops. Generally, those areas of land with less than 360 mm of rain spread over a distinct wet season of several months cannot grow crops for food or cash on rainfall alone. Then irrigation becomes necessary unless some peculiarity such as an oasis exists.
Frictional Performance Of Pavements And Estimates Of Accident Probability [Dec. 1980], James L. Burchett, Rolands L. Rizenbergs
Frictional Performance Of Pavements And Estimates Of Accident Probability [Dec. 1980], James L. Burchett, Rolands L. Rizenbergs
Kentucky Transportation Center Research Report
Objectives of this study were to evaluate standard and experimental surfaces throughout Kentucky in terms of skid resistance and effects of traffic, and to provide criteria for judging suitability of these surfaces to satisfy requirements for skid resistance and economics. The effects of traffic were quantified by regression analysis and scatter of data. Criteria included an estimate of accident risks, effects of speed on skid resistance, and seasonal variations in skid resistance.
Pavements on low volume roads (less than 1,000 vehicles per day) maintained adequate skid resistances. Open-graded friction courses, with the possible exception of sections using phosphate slag aggregate, …
Fifth International Specialty Conference On Cold-Formed Steel Structures, University Of Missouri--Rolla
Fifth International Specialty Conference On Cold-Formed Steel Structures, University Of Missouri--Rolla
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This document contains the beginning pages of the Proceedings of the Fifth International Specialty Conference on Cold-Formed Steel Structures:
- Cover
- Title page
- Conference Sponsors, Directors, Planning Committee
- Table of Contents
- Preface
- Program
- AISI's Cold-Formed Steel Design Specification - Recent Changes
Interstate Safety Improvement Program, Jerry G. Pigman, Kenneth R. Agent, Charles V. Zegeer
Interstate Safety Improvement Program, Jerry G. Pigman, Kenneth R. Agent, Charles V. Zegeer
Kentucky Transportation Center Research Report
The purpose of this paper was to prepare prioritized rankings of recommended improvements which could implemented for the Interstate Safety Improvement Program in Kentucky. Considerable detail is presented which documents analysis procedures used to determine sites, sections, and elements of the roadway in need of improvement. The average number of accidents per interchange, bridge, 1.6-km (1.0-mile) section, and 0.48-km (0.3-mile) spots were summarized for large urban, medium urban, and rural sections of the interstate system. At specified levels of statistical significance, critical numbers of accidents and critical accident rates were calculated to assist in identifying high-accident locations. A limited field …
Use Of Economic Analyses And Dynamic Programming In The Selection Of Projects For Resurfacing, Charles V. Zegeer, Kenneth R. Agent, Rolands L. Rizenbergs
Use Of Economic Analyses And Dynamic Programming In The Selection Of Projects For Resurfacing, Charles V. Zegeer, Kenneth R. Agent, Rolands L. Rizenbergs
Kentucky Transportation Center Research Report
The objective of this paper was to develop a dynamic programming procedure using economic analyses to assist in optimizing expenditures in pavement resurfacing programs. Benefit relationships were determined from expected accident reduction, improved comfort, time saving, fuel savings, and maintenance savings. The only cost input to the program was the resurfacing cost of each project.
Dynamic programming was adapted to the selection of projects for resurfacing in Kentucky. Over $8.4 million of additional user benefits would have been realized in 1976 if dynamic programming had been used in selecting projects. The benefit-cost ratio of sections selected for resurfacing by the …
Welded Connections In Cold-Formed Sections, Frans Soetens, Jan W. B. Stark
Welded Connections In Cold-Formed Sections, Frans Soetens, Jan W. B. Stark
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Fatigue Behavior Of Sheet-Steel Fabrication Details, K. H. Klippstein
Fatigue Behavior Of Sheet-Steel Fabrication Details, K. H. Klippstein
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Seismic Response Of Industrial Steel Storage Racks, C. K. Chen, R. E. Scholl, J. A. Blume
Seismic Response Of Industrial Steel Storage Racks, C. K. Chen, R. E. Scholl, J. A. Blume
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Shear Resistance Of Steel-Stud Wall Panels, Thomas S. Tarpy Jr.
Shear Resistance Of Steel-Stud Wall Panels, Thomas S. Tarpy Jr.
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Light Gage Space Structures With Prestressing, Lev Zetlin
Light Gage Space Structures With Prestressing, Lev Zetlin
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Welding Of Sheet Steel, William Mcguire, Teoman Peköz
Welding Of Sheet Steel, William Mcguire, Teoman Peköz
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
T-Joints Made Of Rectangular Tubes, Ben Kato, Isao Nishiyama
T-Joints Made Of Rectangular Tubes, Ben Kato, Isao Nishiyama
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Elastic Modulus Of Cold-Formed Sheet Steel, K. R. Venkataramaiah, J. Roorda, K. R. Srinivasaiah
Elastic Modulus Of Cold-Formed Sheet Steel, K. R. Venkataramaiah, J. Roorda, K. R. Srinivasaiah
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Design For Manufacturability, George T. Halmos
Design For Manufacturability, George T. Halmos
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Theoretical And Physical Evaluations Of Steel Shear Diaphragms, Hsin-Tien Huang, Larry D. Luttrell
Theoretical And Physical Evaluations Of Steel Shear Diaphragms, Hsin-Tien Huang, Larry D. Luttrell
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Behavior And Design Of Continuous Girts And Purlins, Dimos Polyzois, Peter C. Birkemoe
Behavior And Design Of Continuous Girts And Purlins, Dimos Polyzois, Peter C. Birkemoe
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Coating Effects Of Cold-Formed Steel Deck Slabs, Max L. Porter, C. E. Ekberg Jr.
Coating Effects Of Cold-Formed Steel Deck Slabs, Max L. Porter, C. E. Ekberg Jr.
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Mechanical Interlocking Capacity Of Composite Slabs, R. M. Schuster, W. C. Ling
Mechanical Interlocking Capacity Of Composite Slabs, R. M. Schuster, W. C. Ling
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Stability Of Unbraced Pallet Racks, Michael J. Davies
Stability Of Unbraced Pallet Racks, Michael J. Davies
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
The Design Of Adjustable Storage Shelves, J. Rhodes, William King, James M. Harvey
The Design Of Adjustable Storage Shelves, J. Rhodes, William King, James M. Harvey
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
The Effects Of Frictional Restraint On The Stability Of A Simple Strut, M. H. R. Godley
The Effects Of Frictional Restraint On The Stability Of A Simple Strut, M. H. R. Godley
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Energy Considerations In Low-Rise Steel Buildings, Edward W. Machaj, Andrew S. Zakrzewksi
Energy Considerations In Low-Rise Steel Buildings, Edward W. Machaj, Andrew S. Zakrzewksi
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
State Of The Art - Cylindrical Cold-Formed Steel Farm Structures, George Abdel-Sayed, Ching Fung, Frank Monasa
State Of The Art - Cylindrical Cold-Formed Steel Farm Structures, George Abdel-Sayed, Ching Fung, Frank Monasa
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Lateral Bracing Of Locally Buckled Columns, Shien T. Wang, Hungy-Y Pao, Raghuram Ekambaram
Lateral Bracing Of Locally Buckled Columns, Shien T. Wang, Hungy-Y Pao, Raghuram Ekambaram
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Inelastic Load Carrying Capacity Of Cold-Formed Steel Beams, Muzaffer Yener, Teoman Peköz
Inelastic Load Carrying Capacity Of Cold-Formed Steel Beams, Muzaffer Yener, Teoman Peköz
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Aisi's Cold-Formed Steel Design Specification - Recent Changes, Albert L. Johnson
Aisi's Cold-Formed Steel Design Specification - Recent Changes, Albert L. Johnson
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.