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Articles 72481 - 72510 of 75031

Full-Text Articles in Engineering

Establishing Roadside Slopes By Direct Seeding With Legumes And Woody Ornamentals And By Seedlings Of Ornamental Plants : Interim Report, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter Jan 1972

Establishing Roadside Slopes By Direct Seeding With Legumes And Woody Ornamentals And By Seedlings Of Ornamental Plants : Interim Report, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.


Evaluation Of A Mailed Planning Survey, Eugene William Waltz Jan 1972

Evaluation Of A Mailed Planning Survey, Eugene William Waltz

JTRP Technical Reports

No abstract provided.


Selection, Establishment And Maintenance Of Woody Ornamental Plants For Highway Plantings, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter Jan 1972

Selection, Establishment And Maintenance Of Woody Ornamental Plants For Highway Plantings, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.


A Disaggregate Analysis Of Urban Travel Behavior, Edward J. Kannel Jan 1972

A Disaggregate Analysis Of Urban Travel Behavior, Edward J. Kannel

JTRP Technical Reports

No abstract provided.


Establishing Highway Slopes With Woody Plants Propagated As Root Cuttings : Technical Paper, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter Jan 1972

Establishing Highway Slopes With Woody Plants Propagated As Root Cuttings : Technical Paper, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.


Nitrogen Availability To Woody Plant Species As Influenced By Nitrogen Fixation : Interim Report, Robert E. Mcniel, Philip L. Carpenter Jan 1972

Nitrogen Availability To Woody Plant Species As Influenced By Nitrogen Fixation : Interim Report, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.


The Application Of Energy Concepts To Pavements : Informational Report, William H. Highter Jan 1972

The Application Of Energy Concepts To Pavements : Informational Report, William H. Highter

JTRP Technical Reports

No abstract provided.


An Investigation Of The Use Of The Moisture-Tension Method For Determination Of Liquid And Plastic Limit Values Of Soil, Takahiko Nishio Jan 1972

An Investigation Of The Use Of The Moisture-Tension Method For Determination Of Liquid And Plastic Limit Values Of Soil, Takahiko Nishio

JTRP Technical Reports

No abstract provided.


The Effect Of Plasticity And Quantity Of Fines On Stability Of Soil-Gravel Mixtures, Faiz Makdisi-Ilyas Jan 1972

The Effect Of Plasticity And Quantity Of Fines On Stability Of Soil-Gravel Mixtures, Faiz Makdisi-Ilyas

JTRP Technical Reports

No abstract provided.


The Temporal Stability Of Trip Generation Relationships : Technical Paper, Edward J. Kannel, Kenneth W. Heathington Jan 1972

The Temporal Stability Of Trip Generation Relationships : Technical Paper, Edward J. Kannel, Kenneth W. Heathington

JTRP Technical Reports

No abstract provided.


Predicting Park 'N Ride Parking Demand : Technical Paper, Usamah Rashrash Abdus-Samad, William Louise Grecco Jan 1972

Predicting Park 'N Ride Parking Demand : Technical Paper, Usamah Rashrash Abdus-Samad, William Louise Grecco

JTRP Technical Reports

No abstract provided.


An Investigation Into The Gradation Variability Of Aggregates Used In Bases, James T. Parson Jan 1972

An Investigation Into The Gradation Variability Of Aggregates Used In Bases, James T. Parson

JTRP Technical Reports

No abstract provided.


Sensitivity Analysis Of Various Cost Elements In Flexible Pavement Design, Eldon J. Yoder, Farideh Ramjerdi, William Louise Grecco Jan 1972

Sensitivity Analysis Of Various Cost Elements In Flexible Pavement Design, Eldon J. Yoder, Farideh Ramjerdi, William Louise Grecco

JTRP Technical Reports

No abstract provided.


Toward Accident Reduction Innovations In Driver Education, Michelle Shapiro Jan 1972

Toward Accident Reduction Innovations In Driver Education, Michelle Shapiro

JTRP Technical Reports

No abstract provided.


Computerized Slope Stability Analysis: The Sliding Block : Technical Paper, Aditya Mohan, Carlos Mendez, C. W. Lovell Jan 1972

Computerized Slope Stability Analysis: The Sliding Block : Technical Paper, Aditya Mohan, Carlos Mendez, C. W. Lovell

JTRP Technical Reports

No abstract provided.


Retarders For Concrete And Their Effects On Setting Time And Shrinkage : Interim Report, Yasuhiko Yamamoto Jan 1972

Retarders For Concrete And Their Effects On Setting Time And Shrinkage : Interim Report, Yasuhiko Yamamoto

JTRP Technical Reports

No abstract provided.


Indiana's Thermally Insulated Test Road : Technical Paper, James A. Horton, Maurice M. Bowers, C. W. Lovell Jan 1972

Indiana's Thermally Insulated Test Road : Technical Paper, James A. Horton, Maurice M. Bowers, C. W. Lovell

JTRP Technical Reports

No abstract provided.


Herbicide Studies In Landscape Plantings : Interim Report, Philip L. Carpenter Jan 1972

Herbicide Studies In Landscape Plantings : Interim Report, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.


Thermally Insulated Test Road: State Road 26 Performance And Temperature Prediction Studies : Progress Report No. 2, Maurice M. Bowers Jan 1972

Thermally Insulated Test Road: State Road 26 Performance And Temperature Prediction Studies : Progress Report No. 2, Maurice M. Bowers

JTRP Technical Reports

No abstract provided.


Assumptions In Forrester's Urban Dynamics Model And Their Implications, Daniel L. Babcock Jan 1972

Assumptions In Forrester's Urban Dynamics Model And Their Implications, Daniel L. Babcock

Engineering Management and Systems Engineering Faculty Research & Creative Works

Forrester's Urban Dynamics model is examined in terms of 1) his assumptions about complex dynamic systems, 2) the a priori bias revealed using a "normalized" model, 3) equilibrium changes when the model is modified to fit urban data, and 4) policy predictions of such a modified model. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.


Dissolution Potentials And Activation Energies Of Insb Single Crystals, Martin E. Straumanis, Lih Da Hu Jan 1972

Dissolution Potentials And Activation Energies Of Insb Single Crystals, Martin E. Straumanis, Lih Da Hu

Materials Science and Engineering Faculty Research & Creative Works

The rest (or corrosion) and dissolution potentials of InSb single crystals in HC1 were determined. There is no potential difference (within error limits) between the inverse {111} faces in pure HC1. A difference of up to 44 mV and more develops as soon as the InSb electrode is anodically dissolved. The potential becomes less noble in the sequence In{111}, {100}, {110}, Sb{111}. The Tafel relationship is observed over three decades of current density. With additions of FeCl3, FeCl2, K3Fe(CN)6, K4Fe(CN)6, H2C4H4O6 to 2N HC1, the anodic potentials of both inverse {111} faces are shifted to more active values; the e'H …


Irradiation Enhanced Decomposition Of A Nickel-Carbon Solid Solution, B. L. Shriver, Manfred Wuttig Jan 1972

Irradiation Enhanced Decomposition Of A Nickel-Carbon Solid Solution, B. L. Shriver, Manfred Wuttig

Materials Science and Engineering Faculty Research & Creative Works

This investigation was performed to determine the effects of room temperature neutron irradiation on the distribution of carbon in a nickel-0.3 wt.% carbon alloy. The experiment consisted of comparing the amount of carbon in solid solution and the internal stresses of both unirradiated and irradiated (1013 fn-cm-2 < ΦF < 1018 fn-cm-2) samples following isochronal anneals between 100 and 1200°C by using the magnetic Dis accommodation technique. The results indicate that the amount of carbon remaining in solid solution decreases with increasing neutron dose. At temperatures below 200°C this is due to the trapping of carbon by mobile irradiation-produced defects. Between 200 and 600°C the formation of metastable carbides is enhanced by the presence of irradiation-produced defects. No differences are observed in irradiated and unirradiated samples above 600°C. © 1972.


Activation Volumes Of Carbon Diffusion In Fcc Iron-Nickel Alloys, J. Keiser, Manfred Wuttig Jan 1972

Activation Volumes Of Carbon Diffusion In Fcc Iron-Nickel Alloys, J. Keiser, Manfred Wuttig

Materials Science and Engineering Faculty Research & Creative Works

The Dis accommodation technique was used to determine the activation volume of carbon diffusion, ΔV, in six fcc iron-nickel alloys. Measurements were made at temperatures ranging from 68 to 90 °C and pressures up to 6 kbar on samples having a nickel content between 31 and 63 at.%. A maximum activation volume of 3.9 cm3/mole was found at 34 at.% nickel. The compositional dependence of ΔV is satisfactorily reproduced by a magnetic-energy continuum model in which it is assumed that the activation free energy of diffusion is essentially ferromagnetic in origin. © 1972 The American Physical Society.


Nonstoichiometry In Batio3, G. J. Conger, Harlan U. Anderson Jan 1972

Nonstoichiometry In Batio3, G. J. Conger, Harlan U. Anderson

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.


Low Temperature Lattice Parameters And Expansion Coefficients Of Ai2au And Lif Gruneisen Constants Of Lif, Martin E. Straumanis, Jayant S. Shah Jan 1972

Low Temperature Lattice Parameters And Expansion Coefficients Of Ai2au And Lif Gruneisen Constants Of Lif, Martin E. Straumanis, Jayant S. Shah

Materials Science and Engineering Faculty Research & Creative Works

There is no difference in the thermal expansion behavior of an intermetallic compound (Al2Au) and of an ionic (LiF), except in the magnitude of the expansion coefficients, which for both compounds upon cooling below 40°K approach zero. The lattice parameters of the two compounds mentioned decrease uniformly and without anomalies with lowering the temperature, approaching a constant value below 40°K. The a–T relationship between 40 and 180° is given in form of equations. A pump working on the Joule‐Thomson principle was used for cooling. The GRÜNEISEN parameter, γ, of LiF between 40 and 180°K is a constant, contrary to theoretical …


Thermal Expansion Behavior Of Silicon At Low Temperatures, Jayant S. Shah, Martin E. Straumanis Jan 1972

Thermal Expansion Behavior Of Silicon At Low Temperatures, Jayant S. Shah, Martin E. Straumanis

Materials Science and Engineering Faculty Research & Creative Works

Lattice parameters, thermal expansion coefficients and Grüneisen parameters of silicon are determined by an X-Ray diffraction method in the temperature range of 180-40 K without the use of liquid gases. Thermal expansion of silicon becomes negative below 120 K which is discussed in terms of its lattice vibrations and crystal structure. © 1972.


Comment On The Nature Of The Disaccommodation In Hcp Co-C Alloys, J. Keiser, Manfred Wuttig Jan 1972

Comment On The Nature Of The Disaccommodation In Hcp Co-C Alloys, J. Keiser, Manfred Wuttig

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.


Polynary Telluride Glasses Containing Silver, H. E. Anthonis, N. J. Kreidl Jan 1972

Polynary Telluride Glasses Containing Silver, H. E. Anthonis, N. J. Kreidl

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.


Pbo Transformation Induced By Water, Charles A. Sorrell Jan 1972

Pbo Transformation Induced By Water, Charles A. Sorrell

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.


Effects Of Cold Working Under Pressure On Subsequent Yield, J. G. Hoeg, Robert L. Davis Jan 1972

Effects Of Cold Working Under Pressure On Subsequent Yield, J. G. Hoeg, Robert L. Davis

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A method utilizing high pressure fluid environments is described whereby a three-dimensional subsequent yield surface was determined for 304 stainless steel cylindrical parent specimens of this material were prestrained in axial compression under fluid pressure and then small sub specimens were sectioned from these parent specimens. Finite element techniques were used to optimize the parent specimen size so that a zone of uniform axial stress woidd result during the prestraining. Longitudinal strains in this zone were monitored during the prestraining and the subspecimens were cut from this region in a manner that did not allow the machining to appreciably affect …