Engineering Commons^™

A Checklist And Sample Specifications For Single And/Or Tandem Axle Dump Trucks, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This publication is a revision to the February 1983 publication of the same title and contains a checklist and sample specifications to assist Indiana's Local Public Agencies in the procurement of dump trucks for use in the maintenance of local roads and streets. Most LPA's do not purchase such equipment in large numbers, hence many do not have highly qualified and experienced staff to assist in the development of the specifications for purchasing new equipment.

This checklist and the sample specifications provide for individual preferences. They are not intended to dictate decisions or restrict bidding. If followed, they will assure …

Determining Highway Needs And Setting Road Project Priorities In Indiana Counties - An Executive Summary, Jon Fricker, Joseph L. Schaffer

Indiana Local Technical Assistance Program (LTAP) Publications

This Executive Summary is intended to acquaint county officials with the issues involved and the techniques available to set priorities on county highway segments, should a county wish to implement such procedures in-house or contract with a consultant.

A Predictive-Adaptive, Multipoint Feedback Controller For Local Heat Therapy Of Solid Tumors, Charles F. Babbs, V A. Vanguine, J T. Jones

Weldon School of Biomedical Engineering Faculty Publications

Uniform heating of tumor tissue to therapeutic temperatures without damaging surrounding normal tissue is required for optimal local heat therapy of cancer. This paper describes an algorithm for online computer control that will allow the therapist to minimize the standard deviation of measured intratumoral temperatures. The method is applicable to systems incorporating multiple surface and/or interstitial applicators delivering microwave, radiofrequency, or ultrasonic power and operating under the control of a small computer. The essential element is a novel predictive-adaptive control algorithm that infers relevant thermal parameters from the responses of multiple temperature sensors, as each of the power applicators is …

Access Control For Local Roads And Streets In Small Cities And Rural Areas, Hussein F. Dia, Jon Fricker

Indiana Local Technical Assistance Program (LTAP) Publications

This manual is a response to the need expressed by local public officials in small cities and rural areas for a single reference book on the subject. A variety of scattered references have been combined into a single volume with small communities in mind. The authors hope that this manual will be of value to street commissioners, road supervisors, and city and county engineers throughout Indiana.

Proposed Structure For Large Quantum Interference Effects, S. Datta, Michael R. Melloch, S. Bandyopadhyay, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

In this letter we propose and analyze a new semiconductor structure that can be fabricated by present day technology and can lead to large quantum interference effects with potential device applications.

Effect Of Impurity Trapping On The Capacitance‐Voltage Characteristics Of N‐Gaas/N‐Algaas Heterojunctions, K. L. Tan, Mark S. Lundstrom, Michael R. Melloch

Department of Electrical and Computer Engineering Faculty Publications

We have studied the capacitance-voltage (C- V) characteristics of Schottky barriers on inverted nGaAs/ N-AIGaAs and normal N-AIGaAs/n-GaAs heterojunctions. Impurities introduced during film growth produced a negative sheet charge of 6.0 X 10 II cm -2 at the interface of the inverted n-GaAs/N-AIGaAs heterojunction. The effectiveness of GaAs quantum wells in trapping these impurities was investigated. GaAs quantum wells 20 A wide were placed in intervals of 2500 A for the first 0.75 pm of the AIGaAs layer; in the last 0.25 pm, the periodicity of the quantum wells was progressively decreased by half with the last quantum well placed …

Effect Of Deferoxamine On Late Deaths Following Cpr In Rats, Charles F. Babbs, Sushil D. Kompala, Karl E. Blaho

Weldon School of Biomedical Engineering Faculty Publications

The iron chelating agent deferoxamine was studied in an animal model as post-resuscitation therapy to prevent late deaths and brain damage following total circulatory arrest and resuscitation. Cardio-respiratory arrest was induced by injection of cold, 1% KC1 into the left ventricles of ketamine anesthetized rats pretreated with succinylcholine chloride, and by discontinuation of positive pressure ventilation. CPR was begun after six minutes, and animals with return of spontaneous circulation were entered into the study. Within five minutes after return of spontaneous circulation, treated animals received deferoxamine (50 mg/kg, IV). At ten days, 16 of 25 (64%) of treated animals had …

Potassium Efflux From Myocardial Cells Induced By Defibrillator Shock, M J. Niebauer, L A. Geddes, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

A transient, dose-dependent cardiac depression was produced by defibrillator shocks in an isolated, working canine heart preparation perfused with oxygenated arterial blood from a support dog. Accompanying this depression was an efflux of potassium (K+ ), forced out of the myocardial cells by the passage of defibrillating current. The transient increase in extracellular K + concentration was recorded graphically in the venous outflow. It was found that 5-msec rectangular wave shocks, from three to ten times defibrillatory current threshold, released doserelated pulses of K+ . We conclude that because extracellular K + is a myocardial depressant, at least part of …

Abdominal Binding And Counterpulsation In Cardiopulmonary Resuscitation, Charles F. Babbs, William E. Blevins

Weldon School of Biomedical Engineering Faculty Publications

The history and potential of abdominal pressure as an adjunct to standard cardiopulmonary resuscitation (CPR) is reviewed. Abdominal pressure during CPR may be either static or phasic. Static abdominal pressure redirects limited blood flow generated by chest compressions toward the heart and brain, and away from the abdominal organs and lower extremities, thus boosting coronary perfusion pressure. Phasic abdominal pressure applied whenever chest pressure is released, in counterpoint to the rhythm of chest compression—so called interposed abdominal compression (IAC)-CPR—generates blood flow by an independent abdominal pump mechanism that augments the systemic perfusion created by chest compressions. New imaging data are …

The Effect Of Carbon Dioxide, Lidoflazine, And Deferoxamine Upon Long Term Survival Following Cardiorespiratory Arrest In Rats, Stephen F. Badylak, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This study examined the effect of carbon dioxide, lidoflazine, and deferoxamine therapy upon the 10-day survival incidence and subsequent neurologic function of rats subjected to 7 min of cardiorespiratory arrest with resuscitation. Cardiac arrest (asystole) was induced at time zero by injection of cold, 1% KCl into the left ventricle of ketamine-anesthetized rats pretreated with succinylcholine. Positive pressure ventilation was discontinued at time zero. Cardiopulmonary resuscitation (CPR) was begun at 7 min, and animals with return of spontaneous circulation were entered into the study. Twenty treated rats were ventilated for 1 h with 7% carbon dioxide-93% oxygen and given lidoflazine …

Guide Manual—Records And Reports For Indiana County Highway Departments, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

This Guide Manual on Records and Reports for Indiana County Highway Departments has been prepared, in collaboration with the State Board of Accounts, to assist County Road Officials in complying with the statutory requirements. (IC 8-17-4.1)

The procedures on the keeping of the forms, the sample entries that demonstrate the use of the forms, and the summary charts, showing the relationship of the several forms to each other, have been reviewed by the State Board of Accounts and are believed to be correct and authoritative. It must be recognized, however, that such a Guide Manual as presented here cannot cover …

1986 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Herpicc

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.

Relationship Between Pulse-Wave Velocity And Arterial Elasticity, F J. Callaghan, L A. Geddes, Charles F. Babbs, J D. Bourland

Weldon School of Biomedical Engineering Faculty Publications

Pulse wave velocity (PWV) was measured in situ in 11 isolated canine common carotid arteries. Seven arteries exhibited a linear PWV vs. pressure function at pressures ranging from 0 to 200 mmHg. Four arteries yielded a linear relationship between PWV and pressure between 1 and 100 mmHg; for these vessels the relationship was nonlinear at higher pressures. Seven arteries (five from the group which was linear up to 200 mmHg and two from the group which was linear up to 100 mmHg) were excised and pressure/volume measurements were made in vivo. Using pressure/volume data, the Moens-Korteweg equation was evaluated as …

Traffic Volume Forecasting Methods For Rural State Highways, Jon D. Fricker, Sunil K. Saha

JTRP Technical Reports

No abstract provided.

Microcomputer Implementation Of Santa: A Personnel Management Model : Implementation Report, J. R. Wright

JTRP Technical Reports

No abstract provided.

Application Of A Rapid Test Method For Asphalt Content, Mary Jo Hamman, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Pore Structure Of Concrete, Ding Liu, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Stabl5/Pc Stabl5 User Manual : Informational Report, James Richard Carpenter

JTRP Technical Reports

No abstract provided.

The Use Of Fuzzy Sets Mathematics To Assist Pavement Evaluation And Management: Executive Summary, Manol Andonyadis, A. G. Altschaeffl, Jean-Lou Chameau

JTRP Technical Reports

No abstract provided.

Microcomputer Implementation Of Santa: A Personnel Management Model, J. R. Wright, Steven Christian Egly

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 119, David L. Cochran, Leroy Gray

JTRP Technical Reports

No abstract provided.

Studies On Controlled Low Strength Mortar, William Forrest Kepler

JTRP Technical Reports

No abstract provided.

Drilled Pilers Used For Slope Stabilization, Michael William Oakland, Jean-Lou Chameau

JTRP Technical Reports

No abstract provided.

The Effect Of Steel Fibers On The Toughness Properties Of Large Aggregate Concrete : Informational Report, Stephen Brent Tatro

JTRP Technical Reports

No abstract provided.

Assessment Of Routine Maintenance Needs And Optimal Use Of Maintenance Funds: An Estimation Of Service Life And Cost Of Routine Maintenance Activities : Interim Report - Executive Summary, Kieran John Feighan, Kumares C. Sinha, Thomas D. White

JTRP Technical Reports

No abstract provided.

Design Of Reinforced Embankments : Executive Summary, Dana Norman Humphrey

JTRP Technical Reports

No abstract provided.

A Remote Office Automation Analysis, J. R. Wright, Eric David Kosiba, Gregory Raymond Stukel

JTRP Technical Reports

No abstract provided.

Finite Element Analysis Of Plane Strain Problems With Ps-Nfap And The Cap Model: User's Manual : Implementation Report (1), Dana Norman Humphrey, William Oris Mccarron, R. D. Holtz, Wai-Fah Chen

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 120, David L. Cochran, Leroy Gray

JTRP Technical Reports

No abstract provided.

Stabl6 With Reinforcing Layer Option: User's Manual : Implementation Report (2), Dana Norman Humphrey, R. D. Holtz

JTRP Technical Reports

No abstract provided.