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Articles 1 - 30 of 33
Full-Text Articles in Engineering
Irradiation-Hyperthermia In Canine Hemangiopericytomas: Large-Animal Model For Therapeutic Response, Ralph C. Richardson, Virgil L. Anderson, William D. Voorhees, William E. Blevins, Tammy K. Inskeep, Wolfgang Janas, Robert E. Shupe, Charles F. Babbs
Irradiation-Hyperthermia In Canine Hemangiopericytomas: Large-Animal Model For Therapeutic Response, Ralph C. Richardson, Virgil L. Anderson, William D. Voorhees, William E. Blevins, Tammy K. Inskeep, Wolfgang Janas, Robert E. Shupe, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
Results of irradiation-hyperthermia treatment in 11 dogs with naturally occurring hemangiopericytomas are reported. Similarities of canine and human hemangiopericytomas are described. Orthovoltage X-irradiation followed by microwaveinduced hyperthermia resulted in a 91% objective response rate. A statistical procedure was given to evaluate quantitatively the clinical behavior of locally invasive, nonmetastatic tumors in dogs that were undergoing therapy for control of local disease. The procedure used a small sample size and demonstrated distribution of the data on a scaled response as well as transformation of the data through classical parametric and nonparametric statistical methods. These statistical methods set confidence limits on the …
Pavement Cuts For Utilities - A Guide For Their Management, James Mabry Iddins, Charles F. Scholer
Pavement Cuts For Utilities - A Guide For Their Management, James Mabry Iddins, Charles F. Scholer
Indiana Local Technical Assistance Program (LTAP) Publications
A manual of street cut methods that have worked well for several states, cities & counties.
Pavement Cuts For Utilities - A Field Guide To Their Accomplishment And Maintenance, James Mabry Iddins, Charles F. Scholer
Pavement Cuts For Utilities - A Field Guide To Their Accomplishment And Maintenance, James Mabry Iddins, Charles F. Scholer
Indiana Local Technical Assistance Program (LTAP) Publications
A guide to developing specifications and procedures for road maintenance.
Minor Maintenance Manual For County Bridges, Brent Roberts, Marion B. Scott, Charles F. Scholer
Minor Maintenance Manual For County Bridges, Brent Roberts, Marion B. Scott, Charles F. Scholer
Indiana Local Technical Assistance Program (LTAP) Publications
This report outlines a routine program of bridge maintenance and does not cover the repair of bridges which requires a different set of resources. While the tasks described may seem simple and insignificant, they will extend to their fullest the lives of the bridges in the system.
Evaluation Of Fhwa Technology Transfer Program At Herpicc, Purdue University, Robert K. Whitford
Evaluation Of Fhwa Technology Transfer Program At Herpicc, Purdue University, Robert K. Whitford
Indiana Local Technical Assistance Program (LTAP) Publications
An evaluation of the FHWA technology transfer program at HERPICC, Purdue University based on a questionnaire sent to operation and management personnel of the highway road system. Future courses of action are also suggested.
Checklist For Preparing Basic Specifications For A Light Duty Sign And/Or Service Truck, Herpicc
Checklist For Preparing Basic Specifications For A Light Duty Sign And/Or Service Truck, Herpicc
Indiana Local Technical Assistance Program (LTAP) Publications
This checklist provides suggested items to be considered when seeking bids for a service truck to be used for sign maintenance or other general service.
An Experimental Circulatory Arrest Model In The Rat To Evaluate Calcium Antagonists In Cerebral Resuscitation, Lawrence De Garavilla, Charles F. Babbs, Willis A. Tacker
An Experimental Circulatory Arrest Model In The Rat To Evaluate Calcium Antagonists In Cerebral Resuscitation, Lawrence De Garavilla, Charles F. Babbs, Willis A. Tacker
Weldon School of Biomedical Engineering Faculty Publications
A circulatory arrest model in the rat was developed for use in cerebral and cardiac resuscitation studies. Whole-body ischemia was produced for 8 to 18 minutes by arresting the heart with a cold potassium chloride cardioplegic solution. Following cardiopulmonary resuscitation, minimal, standardized intensive care was provided. As the duration of ischemia was increased from 8 to 18 minutes, survival immediately following resuscitation decreased from 100% to 25%, and survival at 48 hours after ischemia decreased from 80% to 0%. Thirty per cent of the rats recovering from 11 minutes of ischemia suffered motor seizures. Survival and the incidence of motor …
Preclinical Studies Of Abdominal Counterpulsation In Cpr, Charles F. Babbs
Preclinical Studies Of Abdominal Counterpulsation In Cpr, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
Abdominal counterpulsation added to standard cardiopulmonary resuscitation improves blood flow in animal models when compared to chest compressions alone. Similar effects can be demonstrated in analog and digital computer models of the circulation. The technique generates both central aortic and central venous pressure pulses, and successful application of the method depends on maximizing the former and minimizing the latter. Proper technique is important in order to generate the largest possible arteriovenous pressure difference.
Theoretical Advantages Of Abdominal Counterpulsation In Cpr As Demonstrated In A Simple Electrical Model Of The Circulation, Charles F. Babbs, Sandra H. Ralston, Leslie A. Geddes
Theoretical Advantages Of Abdominal Counterpulsation In Cpr As Demonstrated In A Simple Electrical Model Of The Circulation, Charles F. Babbs, Sandra H. Ralston, Leslie A. Geddes
Weldon School of Biomedical Engineering Faculty Publications
Animal studies and preliminary clinical observations suggest that the addition of interposed abdominal compressions (IAC) to ventilation and chest compression of standard cardiopulmonary resuscitation (CPR) augments blood flow, blood pressures, and immediate survival. To investigate the physical basis for enhanced circulation during IAC-CPR, we developed an electrical model of the circulation. Heart and blood vessels were modeled as resistive-capacitive networks, pressures as voltages, blood flow as electric current, blood inertia as inductance, and the cardiac and venous valves as diodes. External pressurization of the heart and great vessels, as would occur in CPR, was simulated by application by half-sinusoidal voltage …
Efficacy And Safety Of The Reciprocal Pulse Defibrillator Current Waveform, M J. Niebauer, Charles F. Babbs, L A. Geddes, J D. Bourland
Efficacy And Safety Of The Reciprocal Pulse Defibrillator Current Waveform, M J. Niebauer, Charles F. Babbs, L A. Geddes, J D. Bourland
Weldon School of Biomedical Engineering Faculty Publications
The efficacy and safety of a new defibrillating current waveform, consisting of a low-tilt 5 ms trapezoidal pulse followed closely by a second identical pulse of opposite polarity, was tested m seven isolated, perfused, working canine hearts suspended in an isoresistive, isosmotic shock bath at 37 oC. The efficacy and safety of the reciprocal pulse was compared with a single 5 ms pulse, a single 10 ms pulse, and a dual (unidirectional) 5 ms pulse waveform. The mean threshold average current densities for the 5 ms single pulse, 10 ms single pulse, dual 5 ms pulse, and reciprocal pulse (absolute …
Cardiac, Thoracic, And Abdominal Pump Mechanisms In Cardiopulmonary Resuscitation: Studies In An Electrical Model Of The Circulation, Charles F. Babbs, Christopher Weaver, Sandra H. Ralston, Leslie A. Geddes
Cardiac, Thoracic, And Abdominal Pump Mechanisms In Cardiopulmonary Resuscitation: Studies In An Electrical Model Of The Circulation, Charles F. Babbs, Christopher Weaver, Sandra H. Ralston, Leslie A. Geddes
Weldon School of Biomedical Engineering Faculty Publications
To investigate alternative mechanisms generating artificial circulation during cardiopulmonary resuscitation (CPR), an electrical model of the circulation was developed. Heart and blood vessels were modeled as resistive-capacitive networks; pressures in the chest, abdomen, and vascular compartments as voltages; blood flow as electric current; blood inertia as inductance; and the cardiac and venous valves as diodes. External pressurization of thoracic and abdominal vessels, as would occur in CPR, was simulated by application of half-sinusoidal voltage pulses. Three modes of creating artificial circulation were studied: cardiac pump (CP), in which the atria and ventricles of the model were pressurized simultaneously; thoracic pump …
Intrapulmonary Epinephrine During Prolonged Cardipulmonary Resuscitation: Improved Regional Blood Flow And Resuscitation In Dogs, Sandra H. Ralston, William D. Voorhees, Charles F. Babbs
Intrapulmonary Epinephrine During Prolonged Cardipulmonary Resuscitation: Improved Regional Blood Flow And Resuscitation In Dogs, Sandra H. Ralston, William D. Voorhees, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
Blood flow to vital organs was measured at five-minute intervals during 20 minutes of cardiopulmonary resuscitation (CPR) and ventricular fibrillation in two groups of anesthetized dogs (n = 15 per group). The relationship between organ blood flow and restoration of circulation after 20 minutes was assessed with no additional treatment in Group I and with intrapulmonary epinephrine in Group II. Cardiac output and organ blood flow did not vary significantly in Group I. In Group II, intrapulmonary epinephrine significantly improved blood flow to the myocardium, the brain, and the adrenal glands. A mean myocardial blood flow of less than 0.13 …
Regional Blood Flow During Cardiopulmonary Resuscitation With Abdominal Counterpulsation In Dogs, William D. Voorhees Iii, Sandra H. Ralston, Charles F. Babbs
Regional Blood Flow During Cardiopulmonary Resuscitation With Abdominal Counterpulsation In Dogs, William D. Voorhees Iii, Sandra H. Ralston, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
The addition of abdominal counterpulsation to standard cardiopulmonary resuscitation (IAC-CPR) during ventricular fibrillation has been shown to improve cardiac output, oxygen uptake, and central arterial blood pressure in dogs. The present study was performed to determine the effect of IAC-CPR on regional blood flow. Regional blood flow was measured with radioactively labeled microspheres during sinus rhythm and during alternate periods of IAC-CPR and standard CPR (STD-CPR) in nine dogs anesthetized with pentobarbital. Blood pressures and oxygen uptake were measured continuously. As in previous studies, diastolic arterial pressure was higher (30.8%) during IAC-CPR than during STD-CPR, as were cardiac output (24.5%) …
Handbook Of Traffic Control Practices For Low-Volume Roads In Indiana, Herpicc
Handbook Of Traffic Control Practices For Low-Volume Roads In Indiana, Herpicc
Indiana Local Technical Assistance Program (LTAP) Publications
The purpose of the Handbook on Traffic Control Practices for Low Volume Roads in Indiana is to provide a guide to supplement the existing Manuals on Uniform Traffic Control Devices (MUTCD ). Both the National and the Indiana MUTCDs provide general guidelines for the design, installation, and use of traffic control devices (signs, signals, and markings) on all roads and streets, but their main concern is with higher volume highways. Neither specifically addresses the operational and guidance problems associated with roads that carry fewer than 400 vehicles per day. This handbook's intent is to make these low volume roads safer …
1984 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.
Abnormal Response Of Tumor Vasculature To Vasoactive Drugs, Rosanna C. Chan, Charles F. Babbs, Richard J. Vetter, Carlton H. Lamar
Abnormal Response Of Tumor Vasculature To Vasoactive Drugs, Rosanna C. Chan, Charles F. Babbs, Richard J. Vetter, Carlton H. Lamar
Weldon School of Biomedical Engineering Faculty Publications
The effects of the vasoconstrictor, phenylephrine, and the vasodilator, hydralazine, on blood flow to tumor were studied and compared to those on blood flow to normal tissues in vivo. Regional blood flow and cardiac output were measured with the use of radioactive microspheres in 150- to 250 g inbred Harlan F344 rats bearing subcutaneous nodules of two types of transplantable carcinoma ("hard" and "soft") with microscopically different vascular patterns. Three groups of rats were treated with hydralazine, saline, or phenylephrine, and regional blood flow was determined at the time of maximum blood pressure response. Results were correlated with quantitative morphometric …
Indiana Highway Cost Allocation Study; A Report On Methodology : Interim Report, Kumares C. Sinha, Tien Fang Fwa, E. C. Ting, Robert M. Shanteau, Mitsuru Saito, Harold L. Michael
Indiana Highway Cost Allocation Study; A Report On Methodology : Interim Report, Kumares C. Sinha, Tien Fang Fwa, E. C. Ting, Robert M. Shanteau, Mitsuru Saito, Harold L. Michael
JTRP Technical Reports
No abstract provided.
Stabilization Of Slopes Using Piles : Interim Report, Sophia Hassiotis, Jean-Lou Chameau
Stabilization Of Slopes Using Piles : Interim Report, Sophia Hassiotis, Jean-Lou Chameau
JTRP Technical Reports
No abstract provided.
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 2, Study Procedures And Results, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 2, Study Procedures And Results, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
JTRP Technical Reports
No abstract provided.
An Investigation Of Potential Energy Conservation For Indiana Department Of Highway Buildings, Gary Roderick Smith
An Investigation Of Potential Energy Conservation For Indiana Department Of Highway Buildings, Gary Roderick Smith
JTRP Technical Reports
No abstract provided.
Computational Package For Predicting Pile Stress And Capacity : Interim Report, Francisco Jose Tejidor
Computational Package For Predicting Pile Stress And Capacity : Interim Report, Francisco Jose Tejidor
JTRP Technical Reports
No abstract provided.
Feasibility Of Harvesting Hay On Highway Right-Of-Way: Yield, Quality, And Load Content Of Forage Along Indiana Highway, Kumares C. Sinha, Keith Douglas Johnson, Jerry H. Cherney, David C. Petritz, Kang Hu, Jeffrey Allen Mullen, W. Jacobs
Feasibility Of Harvesting Hay On Highway Right-Of-Way: Yield, Quality, And Load Content Of Forage Along Indiana Highway, Kumares C. Sinha, Keith Douglas Johnson, Jerry H. Cherney, David C. Petritz, Kang Hu, Jeffrey Allen Mullen, W. Jacobs
JTRP Technical Reports
No abstract provided.
Development And Use Of A Management Information System To Identify Areas Of Routine Maintenance Productivity Improvement : Interim Report, V. Alan Sanderson, Kumares C. Sinha
Development And Use Of A Management Information System To Identify Areas Of Routine Maintenance Productivity Improvement : Interim Report, V. Alan Sanderson, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
Energy Conservation And Cost Savings Related To Highway Routine Maintenance : Pavement Maintenance Cost Analysis: Interim Report, Essam Abdel-Aziz Sharaf, Kumares C. Sinha
Energy Conservation And Cost Savings Related To Highway Routine Maintenance : Pavement Maintenance Cost Analysis: Interim Report, Essam Abdel-Aziz Sharaf, Kumares C. Sinha
JTRP Technical Reports
No abstract provided.
Identification Of Frost Susceptible Aggregate And Their Use In Concrete Or Bituminous Pavements, Marco Antonio Salcedo
Identification Of Frost Susceptible Aggregate And Their Use In Concrete Or Bituminous Pavements, Marco Antonio Salcedo
JTRP Technical Reports
No abstract provided.
The Use Of Foamed Asphalt In Bituminous Stabilization Of Base And Sub-Base Materials And Recycled Pavement Layers, Leonard E. Wood, A. G. Altschaeffl, Christine Marie Beaudoin, Franco Luis Castedo
The Use Of Foamed Asphalt In Bituminous Stabilization Of Base And Sub-Base Materials And Recycled Pavement Layers, Leonard E. Wood, A. G. Altschaeffl, Christine Marie Beaudoin, Franco Luis Castedo
JTRP Technical Reports
No abstract provided.
Geotechnical Engineering Problems In The Karst Region Of Southern Indiana, Francis T. Adams, C. W. Lovell
Geotechnical Engineering Problems In The Karst Region Of Southern Indiana, Francis T. Adams, C. W. Lovell
JTRP Technical Reports
No abstract provided.
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 1, Executive Summary, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 1, Executive Summary, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
JTRP Technical Reports
No abstract provided.
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 3, Appendices, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
Development Of A Method For Establishing Resurfacing Priorities For The Pavement Management In Indiana: Volume 3, Appendices, Benjamin Colucci-Rios, Kumares C. Sinha, Eldon J. Yoder
JTRP Technical Reports
No abstract provided.
Indiana Highway Cost-Allocation Study, Kumares C. Sinha, Tien Fang Fwa, Essam Abdel-Aziz Sharaf, Ah Beng Tee, Harold L. Michael
Indiana Highway Cost-Allocation Study, Kumares C. Sinha, Tien Fang Fwa, Essam Abdel-Aziz Sharaf, Ah Beng Tee, Harold L. Michael
JTRP Technical Reports
No abstract provided.