Engineering Commons^™

Use Of Mycorrhizal Inoculation For Plant Establishment On Highway Sites : Interim Report, Stephen Dunning Verkade, David Foster Hamilton

JTRP Technical Reports

No abstract provided.

Development Of A Laboratory Technique To Quantify Concrete Curing, Ephraim Senbetta

JTRP Technical Reports

No abstract provided.

Three-Dimensional Slope Stability Analysis, Rong-Her Jimmy Chen

JTRP Technical Reports

No abstract provided.

Development Of A System For The Evaluation Of Pavements In Indiana : Summary Report, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

Compressibility Of Field Compacted Clay : Interim Report, Ping-Sien Lin, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Population Trends For Indiana —Counties —Cities —Towns 1970–1980, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

This report presents tabulations and rankings that permit a direct comparison of population growth and population totals for city, town and county units.

Physical Principles Of Local Heat Therapy For Cancer, Charles F. Babbs, David P. Dewitt

Weldon School of Biomedical Engineering Faculty Publications

Local hyperthermia therapy for cancer can produce selective heating of solid tumors on the basis of known physical laws. If energy is deposited in the general region of the tumor, temperature tends to develop in the tumor higher than that in surrounding normal tissues. The goal of therapy is to achieve cytotoxic temperature elevations in the tumor for an adequate period of time, without damaging nearby normal tissues. Several modalities exist for local heat treatment, of which radiofrequency and ultrasound offer the most promise for controlled, localized heating at depth. A paucity of blood flow in the tumor compared to …

Alteration Of Defibrillation Threshold By Antiarrhythmic Drugs: A Theoretical Framework, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

No abstract provided.

Cardiac Output During Cpr: A Comparison Of Two Methods, D L. Silver, R J. Murphy, Charles F. Babbs, L A. Geddes

Weldon School of Biomedical Engineering Faculty Publications

Simultaneous Fick and saline dilution methods were compared for measuring cardiac output during experimental cardiac arrest and resuscitation in anesthetized dogs. During cardiopulmonary resuscitation (CPR) cardiac output averaged 53 ± 30 ml/min-kg (42% of pre-arrest values). Values obtained using the Fick vs. saline methods were highly correlated (r = 0.96), and were not statistically different (t = 1.47, df = 16).

Transchest Defibrillation Under Conditions Of Hypothermia, W A. Tacker, Charles F. Babbs, D R. Abendschein, L A. Geddes

Weldon School of Biomedical Engineering Faculty Publications

This study was conducted to determine whether or not hypothermia changes ventricular defibrillation threshold. Ventricular fibrillation was induced by electrical stimulation of the endocardium in pentobarbital anesthetized dogs, both during normothermia and hypothermia produced by circulating 8 °C water through a rubber bladder implanted in the peritoneal cavity. Defibrillation threshold was determined as the shock strength needed to defibrillate the ventricles and differing no more than 10 percent from a shock strength that failed to defibrillate. Defibrillation threshold current was stable for body temperatures ranging from 37 oC to 22 oC. Threshold energy increased linearly with decreasing temperature in keeping …

Effect Of Thoracic Venting On Arterial Pressure, And Flow During External Cardiopulmonary Resuscitation In Animals, Charles F. Babbs, Nicholas Bircher, Dennis E. Burkett, Henry A. Frissora, Brian C. Hodgkin, Peter Safar

Weldon School of Biomedical Engineering Faculty Publications

To test the hypothesis that fluctuations in global intrathoracic pressure are the dominant cause of blood flow during external cardiopulmonary resuscitation (CPR) the authors studied the effects of open pneumothorax on experimental CPR in 7 domestic pigs and 12 mongrel dogs. Similar studies were conducted independently at three laboratories and are reported jointly. All studies were conducted during electrically induced ventricular fibrillation and with standard CPR technique, including ventral-dorsal chest compression at 60/min, 0.5 sec compression duration, 1:5ventilation:compression ratio. During alternate periods of CPR, intrathoracic pressure was vented through bilateral chest tubes, placed to create open pneumothorax and partial collapse …

Cardiac Output During Cardiopulmonary Resuscitation At Various Compression Rates And Durations, Kevin R. Fitzgerald, Charles F. Babbs, Henry A. Frissora, Robert W. Davis, Douglas I. Silver

Weldon School of Biomedical Engineering Faculty Publications

Cardiac output during cardiopulmonary resuscitation (CPR) was measured by a modified indicator-dilution technique in 20 anesthetized dogs (6-12 kg) during repeated 1- to 2-min episodes of electrically induced ventricular fibrillation and CPR, produced by a mechanical chest compressor and ventilator. With compression rates from 20 to 140/min and compression durations (duty cycles) from 10 to 90% of cycle time, cardiac output (CO) was predicted by the equation:

,

where CR is compression rate, DC is duty cycle, SV_max (19 ml) is the effective capacity of the pumping chamber, and k_l (0.00207 min) and k₂ (0.00707 min) are …

Prediction And Control Of Field Swell Pressures Of Compacted Medium Plastic Clay : Interim Report, Gregory Matthew Terdich

JTRP Technical Reports

No abstract provided.

A Rockwell Hardness Test For Portland Cement Concrete, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Treatment Of Sanitary Wastes At Interstate Rest Areas, James E. Etzel

JTRP Technical Reports

No abstract provided.

Pore Size Distribution Of Sandy Soils And The Prediction Of Permeability : Interim Report, Charng-Hsein Juang

JTRP Technical Reports

No abstract provided.

Guidelines - Purchasing And Purchase Contracts By Indiana County Highway Departments, Herpic

Indiana Local Technical Assistance Program (LTAP) Publications

This manual outlines the statutory framework within which County Road Officials must carry out purchasing and purchase contracts for their respective county highway departments. While the manual is focussed on county highway purchasing, the procedures outlined have general application to all purchasing by the County Unit.

Traffic Speed Report No. 111 : Interim Report, Richard Philip Guenthner, George K. Stafford

JTRP Technical Reports

No abstract provided.

Determination Of Contract Time Durations For Ishc Highway Construction Projects, James E. Rowings

JTRP Technical Reports

No abstract provided.

A Cost Effectiveness Approach For The Evaluation Of Highway Safety Improvements In The State Of Indiana, Taro Kaji

JTRP Technical Reports

No abstract provided.

Thin, Applied Surfacing For Improving Skid Resistance Of Concrete Pavements, Charles F. Scholer

JTRP Technical Reports

No abstract provided.

Evaluation Of Available Herbicides And Herbicide Mixtures For Control Of Brush And Milkweed Along Roadsides : Interim Report, D. James Morré

JTRP Technical Reports

No abstract provided.

Analysis Of Hardened Concrete For Admixture Content, William Lee Dolch

JTRP Technical Reports

No abstract provided.

Use Of Synthetic Demand Modeling Techniques In Transportation Planning For Small Urban Areas In Indiana, Kumares C. Sinha, Hani S. Mahmassani, James Robert Mekemson, Edward Wilson Hanscom

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 112 : Interim Report, Richard Philip Guenthner, George K. Stafford

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 113 : Interim Report, Richard Philip Guenthner, George K. Stafford

JTRP Technical Reports

No abstract provided.

The Prediction Of The Freeze/Thaw Durability Of Coarse Aggregates In Concrete By Mercury Intrusion Porosimetry : Interim Report, Meredith Nickels Lindgren

JTRP Technical Reports

No abstract provided.

Evaluation Of Several Maintenance Methods For Continuously Reinforced Concrete Pavements, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

An Investigation Of Recycling Bituminous Pavements, Volume 1 : Interim Report, James L. Mckinney

JTRP Technical Reports

No abstract provided.

County Road Management - Guidelines For Boards Of County Commissioners, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

The purpose of these guidelines is to provide new County Commissioners in Indiana with a basic orientation of their duties and responsibilities in the management of county road systems. It is also a convenient reference to review.