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Articles 39961 - 39990 of 41051
Full-Text Articles in Entire DC Network
Emergency Stop Devices And The Human Factors Of Response, Robert Paul Guinter
Emergency Stop Devices And The Human Factors Of Response, Robert Paul Guinter
Theses
The manual emergency stop Was recognized as an im- portant aspect of machine control very early during the history of powered mechanical systems. The purpose, of course, was to allow machinery to be quickly stepped during emergencies to minimize equipment damage and/or personal injury. Today, however, the emphasis of control is being shifted more and more toward totally automatic systems. Often, the importance of manual emergency stopping and override of these systems is lost in the zeal to perfect automatic controls. The problem that evolves is how and when to provide an efficient human-machine interface to allow a manual emergency …
Biodegradation Of Phenol And 2-Chlorophenol Using A Fill-And-Draw-Reactor, Chi-Chun Tsai
Biodegradation Of Phenol And 2-Chlorophenol Using A Fill-And-Draw-Reactor, Chi-Chun Tsai
Theses
The biological degradation of phenol and 2-chlorophenol was studied at room temperature in a microprocesser controlled fill-and-draw reactor using activated sludge from the Passaic Valley Sewerage Commissioners wastewater treatment plant (Newark, New Jersey). The reactor was cycled through four unit processes: fill, react, settle, and draw. Different cycle times were tested, and the system response was characterized by dissolved oxygen measurements and substrate analysis (by gas chromatography).
With inhibitory substrates, such as those tested, this reactor had much more flexibility, and was therefore much easier to operate, than a standard continuous flow reactor.
A Closed Form Image Force Function For Deposition Of Particles In A Cylindrical Tube, Hsi-Chung Chiou
A Closed Form Image Force Function For Deposition Of Particles In A Cylindrical Tube, Hsi-Chung Chiou
Theses
This study investigated the behavior of charged particles suspended in a laminar steady incompressible flow in a cylindrical tube under the influences of image , inertia , viscous and gravitational forces. A new expression for the image force was obtained by introducing an approximate potential energy function. The velocity profiles employed in the analysis were uniform and parabolic.
The governing equations derived were based on Newton's second law of motion and were solved by a Runge-Kutta numerical method. The results were obtained for different values of Q, a dimensionless inertia-charge parameter. For a value of Q equal to zero the …
Applications And Evaluation Criteria For Robotic Systems, Brijan Shirish Badshah
Applications And Evaluation Criteria For Robotic Systems, Brijan Shirish Badshah
Theses
The robot industry is one of the fastest growing industries. In almost every area of manufacturing, robots are being considered for one or more tasks, but the success of any commercial industrial undertaking has to be measured in terms of financial performance.
To help practitioners in the manufacturing area, an economic analysis and investment appraisal technique for robotic systems is developed, especially to assist managers in making the crucial decision about utilizing an industrial robot. An interactive microcomputer program is developed which performs the economic analysis for cost justification and helps managers to decide whether the implementation of a robot …
Comparison Of Several Manufacturing Techniques Used To Produce A Sterile Antibiotic Powder, Antonio Joseph Barberio
Comparison Of Several Manufacturing Techniques Used To Produce A Sterile Antibiotic Powder, Antonio Joseph Barberio
Theses
There are several manufacturing processes (crystallization, spray drying, freeze drying, and closed crystallization) that are used to produce a sterile antibiotic powder. A pharmaceutical manufacturer is faced with the problem of deciding which process is best suited for their operations. The purpose of this thesis is to propose a comparison technique that might aid in a solution to this problem. In the first step of the comparison technique, a fixed rating is assigned to a number of different categories (i.e. initial cost of equipment, product purity, etc.) for each process. The fixed ratings were established from an industrial survey, and …
The Effect Of Toxic Substances On The Index Properties Of Soils, Ronald Dicola
The Effect Of Toxic Substances On The Index Properties Of Soils, Ronald Dicola
Theses
Contaminated soils were tested to determine if a relationship existed between their index properties and hydraulic conductivity. Atterberg Limit tests and Particle Size Analysis tests were performed on Woodbury, Raritan and Brunswick formation soils. The chemicals examined were Benzene, Phenol and Trichloroethylene (TCE). Tests were performed following the ASTM Standard Test Methods with only slight modification to accommodate the use of contaminated soils. Two different methods of soil contamination were used, one for chemical solutions and the other for pure chemicals.
Particle Size Analysis tests were performed both with and without dispersing agent. Hydrometer tests with dispersing agent resulted in …
Technology Transfer Between Developed And Developing Countries, Tenny Oghogho Ogbomo
Technology Transfer Between Developed And Developing Countries, Tenny Oghogho Ogbomo
Theses
The problems arising from technology transfer, in general, are not new. The problems of the East-West technology transfer, for example, are based on the risk that such transfers will enhance the military capability, or at least the military potential, of the trading partner. In the case of United States trade with the Soviet Union, it can be said that any accretion in the Soviet military capacity weighs against the United States in an overall world-wide balance of power. The restrictions and/or prohibition of such transfer of technology are problems themselves.
The North-South technology transfer, in other words, the technology transfer …
Effects Of Physical Exertion And Caffeine Ingestion On Mental Performance, Alireza Shafiei
Effects Of Physical Exertion And Caffeine Ingestion On Mental Performance, Alireza Shafiei
Theses
Stresses in man-machine systems can be broadly classified as (1) physical and (2) mental. Both types of stresses generate some kind of response in the human body. These responses could be physiological (quantitative) or behavioral (qualitative). While the physical stresses mostly create physiological changes, mental stresses may cause physiological and/or behavioral changes. The purpose of this study is to investigate such influences, and try to determine if stimulants such as coffee have any effect on people's ability to perform tasks involving a combination of physical and mental elements.
An attempt has been made to describe an interrelationship between physical exertion …
Air Pollutant Emissions From Non-Vented Radiant Kerosene Heater, Anil Kumar Mishra
Air Pollutant Emissions From Non-Vented Radiant Kerosene Heater, Anil Kumar Mishra
Theses
Gaseous emissions from non-vented kerosene heaters can generate and create significant indoor air concentrations of various gaseous pollutants. Indoor air concentrations resulting from operating a portable non-vented radiant type kerosene heater in three rooms of size 38.7, 58.1 and 137 M3 were studied. Studies in the environmental chamber having a size of 38.7 M3 under two sets of ventilation conditions showed elevated levels of CO2, total hydrocarbons and CO. An emission rate model was used to estimate the strength of pollutant source, for total hydrocarbons, CO2 and CO with data reported in terms of mass …
An Inventory Model For The Specialty Chemical Industry, Paul Murchison
An Inventory Model For The Specialty Chemical Industry, Paul Murchison
Theses
The specialty chemical industry is a unique segment of the chemical industry. This industry produces chemical intermediate products for the pharmaceutical, agricultural, cosmetics, and other chemically related industries. Most of the products that are produced are covered by patents or involve proprietary know—how. The specialty chemical products are a minor part of a total formulation but contribute unique properties to the end product. This feature of specialty chemicals gives the manufacturer unusual pricing power compared to producers of commodity chemicals. This industry has proven to be very competitive, profitable and in the forefront of the present automation revolution over the …
Maine Yankee Shutdown Assessment: A Report To Governor Joseph E. Brennan, Maine State Planning Office
Maine Yankee Shutdown Assessment: A Report To Governor Joseph E. Brennan, Maine State Planning Office
Maine Collection
Maine Yankee Shutdown Assessment: A Report to Governor Joseph E. Brennan
Maine State Planning Office, Maine Office of Energy Resources, Maine Public Advocate
Executive Department - May 1986
Contents: Legal Process / Decommissioning Constraints and Costs / Public and Economic Costs and Benefits / Apprendices
Clostridium Perfringens: An Adjunctive Indicator In Nonpoint Pollution, Steven G. Eberl
Clostridium Perfringens: An Adjunctive Indicator In Nonpoint Pollution, Steven G. Eberl
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Clostridium perfringens (CP) was evaluated as an additional indicator in assessing impacts and sources of microbial pollution in the Idaho-Utah Cache Valley. Point, nonpoint, river water, and animal fecal samples were analyzed for CP, total coliforms, fecal collforms, and fecal streptococci.
Monthly river samples consistently contained < 20 CP/100 mL, but concentrations of the other indicators varied significantly by location and date. Two sample stations consistently had CP concentrations greater than 20/100 mL. One of these stations was influenced by an upstream wastewater discharge. Chlorinated effluent from this trickling filter plant contained greater than 103 CP/100 mL, but met a 400 FC/100 mL discharge standard. A consistent decrease in CP concentrations in samples taken downstream from this wastewater source were found, despite significant impact from adjacent nonpoint pollution. Lagoon and oxidation ditch wastewater effluents sampled contained < 20 CP/100 mL.
Nonpoint sources sampled (e.g., cattle feedlot runoff) contained < 20 CP/100 mL and 102-104/100 …
Dod6420.1-R, Organization And Functions Of The Armed Forces Medical Intelligence Center (Afmic), April 1986, U.S. Department Of Defense, Robert Bolin , Depositor
Dod6420.1-R, Organization And Functions Of The Armed Forces Medical Intelligence Center (Afmic), April 1986, U.S. Department Of Defense, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
This is the charter for a national-level medical intelligence agency. Specifically, the AFMC was a joint agency of the Military Departments … under the management of the Secretary of the Army…” This directive spells out the mission, functions, responsibilities, and management of the center. An Interdepartmental Advisory Panel (IAP) made recommendations to the Secretary of the Army concerning the director and officers serving at the AFMIC.
The directive contains a lengthy list of acronyms and detailed definitions.
The directive discusses close cooperation with Canada, the United Kingdom, and Australia through a Quadripartite Medical Intelligence Committee (QMIC) headquartered in Washington, DC. …
Bulletin - April, 1986, Civil Aviation Medical Association
Bulletin - April, 1986, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
A six page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
Deposition Of Particles In Tubes Due To Gravity And Electrostatic Charges, Win-Chung Chen
Deposition Of Particles In Tubes Due To Gravity And Electrostatic Charges, Win-Chung Chen
Dissertations
The deposition of particles in a parallel-plate channel and a circular tube under the influence of inertia, fluid viscosity, gravity and electrostatic image forces was studied by analytical and numerical methods. A laminar flow with uniform and parabolic velocity profiles was investigated with a particle initial velocity of zero as well as that of the local fluid velocity.
The governing equations were solved by the Lagrangian approach to obtain the particle trajectories from which the fraction of deposition was calculated. Closed form solutions for particle trajectory and a complete deposition of particles in a finite length of the flow passage …
Acuta Enews April 1986, Vol. 15, No. 4
Acuta Enews April 1986, Vol. 15, No. 4
ACUTA Newsletters
In This Issue
President's Message
Party Line
Telecom Department Compensation: 1985
System 86 Cutover at Cornell
Selling
Santa Clara Magazine, Volume 28 Number 3, Winter 1986, Santa Clara University
Santa Clara Magazine, Volume 28 Number 3, Winter 1986, Santa Clara University
Santa Clara Magazine
2 - IS SILICON VALLEY A HOUSE OF CARDS? By Michael S. Malone. A fresh, freewheeling forecast of the future of Silicon Valley.
7 - MOTIVATING CHILDREN TO SUCCEED By Ruth E. Cook. The author suggests some guidelines for helping children who don't work up to their true potential.
11 - IN SEARCH OF HUMANITY By William J. Rewak, S.J. Santa Clara's president explores the university's role in the development of the human person.
16 - LEARNING TO LEAD A photo feature of executives at the beach, engaged in a new and appealing program from the Executive Development Center that …
Use Of Clay As A Landfill Liner, Mayur B. Desai
Use Of Clay As A Landfill Liner, Mayur B. Desai
Theses
The purpose of this thesis is to study the factors affecting efficient functioning of clay material for containment of landfill materials. The study of liner-leacheate interaction is done from the consolidation and vane shear tests on various clays having different activities, and chemicals that are typically found in a municipal solid waste leachate and a leachate collected from an active landfill.
An effort was made to study the use of Atterberg limits to predict the suitability of a clay as a landfill liner for a given waste environment. The study indicates that there is a decrease in permeability of bentonite …
Analysis And Evaluation Of The Developments In The Use Of Coal, Farid Najib Elkheshen
Analysis And Evaluation Of The Developments In The Use Of Coal, Farid Najib Elkheshen
Theses
This thesis is a survey and evaluation of the developments in the use of coal. It deals with the social, economic, physical, and biological impacts of such a shift. It examines the complete coal system, from extraction to combustion, including the key steps and policy initiatives. The United States, with 6% of the world's population, consumes about 33% of its commerical energy supply - while the available reserve coal is about 80% of total energy in the United States, with coal use representing only 17%, oil and gas about 78% at present.
Technologies under development that might reduce costs, increase …
Saturated Hydraulic Conductivity Of Brunswick Soil With Aqueous Benzene Solution, Thomas R. Pisciotta
Saturated Hydraulic Conductivity Of Brunswick Soil With Aqueous Benzene Solution, Thomas R. Pisciotta
Theses
Tests measuring saturated hydraulic conductivity and dispersivity were conducted on Brunswick soil using an aqueous solution of benzene. The tests were performed using a flexible wall permeameter which was modified to allow extraction of effluent samples immediately upon exit of the test specimen. Influent and effluent samples were analyzed with a gas chromatograph in order to quantify dispersion and sorption in the specimen.
The test was performed using a confining pressure of 70 psi. and a hydraulic gradient of 100.3. Using a sample statically compacted to 99.2% of the Modified Proctor maximum density and tap water as a permeant, stable …
Investigation Into The Feasibility Of Burning Hazardous Waste In Utility Boilers, Reuben Steinberg
Investigation Into The Feasibility Of Burning Hazardous Waste In Utility Boilers, Reuben Steinberg
Theses
Disposal of hazardous waste is of major concern in recent years in this country. Declining availability of landfills together with more stringent State and Federal regulations has necessitated the need to consider alternative means of hazardous waste disposal. It was suggested that burning hazardous wastes in presently operating utility boilers might be beneficial to the utilities and offer a solution to this social problem.
This thesis investigates the feasibility of this alternative given the technical, economic and regulatory considerations involved and discusses the findings of adopting this technology for hazardous waste disposal.
Based on the results of this study it …
The Impact Of Fms On Batch Production Processes, Jan-Sheau Ho
The Impact Of Fms On Batch Production Processes, Jan-Sheau Ho
Theses
A Flexible Manufacturing System (FMS) is an integrated system of combining metalcutting and other processes with materials handling under computer control. With computer control, FMS is capable of processing a variety of different types of workpieces simultaneously. FMS is an approach towards a balancing of high output on the one hand and great flexibility on the other hand. FMS stands as a new technology to improve the productivity of mid-volume, mid-variety production; therefore the manufacturing world will soon feel the impact of FMS.
This thesis attempts to specify what FMS is and how it works, the influence of FMS on …
Effects Of Cd(Ii) And Cu(Ii) On A Biofilm System, Shoou Yuh Chang, Ju-Chang Huang, Yow Chyun Liu
Effects Of Cd(Ii) And Cu(Ii) On A Biofilm System, Shoou Yuh Chang, Ju-Chang Huang, Yow Chyun Liu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
There is little information available in the literature to describe the effect of heavy metals on a fixed-film biological waste treatment system. The primary objective of this study is to evaluate the toxic effect of Cd(II) and Cu(II) on a fixed-film biological reactor (rotating biological contractor) in treating a sugar waste. Different levels of cadmium (5 and 20 mg/L) and copper (1, 5, 10, 25, and 50 mg/L) were dosed to a three-stage RBC unit treating an influent of 300 mg/L sugar solution. Experimental results indicated that the treatment efficiency was not adversely affected by the presence of copper at …
Bulletin - January, 1986, Civil Aviation Medical Association
Bulletin - January, 1986, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
A six page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
The Effects Of Trace Organic Carbon On Aluminum Solubility, Fernand J. Tiblier
The Effects Of Trace Organic Carbon On Aluminum Solubility, Fernand J. Tiblier
Retrospective Theses and Dissertations
Alum jar tests were performed on raw portable waters of varying TOC. Parameters monitored include alum dose, pH and mixing conditions. Finished waters were analyzed for residual aluminum, residual TOC and hardness in order to investigate the effects of TOC on aluminum residual as would be encountered by alum coagulation and lime softening process in practice.
Three-dimensional graphs of residual aluminum, residual TOC and pH were constructed to illustrate the relationship among these measured parameters for the different sources. Statistical analyses were conducted to verify aluminum-organic complexation at reduced alum dosages for varying TOCs; initial TOC, reaction pH and dose …
The Hydrology And Solids Removal Efficiency Of A Detention Pond With Groundwater Inflow, Cameron A. Boss
The Hydrology And Solids Removal Efficiency Of A Detention Pond With Groundwater Inflow, Cameron A. Boss
Retrospective Theses and Dissertations
Most recently, research on stormwater detention ponds has focused on designs and operations that will improve the water quality of the discharge. Historically stormwater detention ponds were used to reduce the rate of runoff from the watershed area of using temporary storage to attenuate flow rates.
The study site was located near Orlando, Florida, and consisted of a detention pond, namely Lake Angel, which received stormwater runoff from a 131-acre area. Hydrologic data such as precipitation, runoff, and pond outflow were measured at the site. Total and suspended solids data for the pond outflow and stormwater runoff also were collected …
An Investigation Of Signs For Median Crossovers, Gillian M. Worsey
An Investigation Of Signs For Median Crossovers, Gillian M. Worsey
Doctoral Dissertations
“This paper describes a study of advance warning signs for median crossovers on divided highways. Candidate crossover signs were identified from a literature review, survey of current State practices and discussions with FHWA personnel. Seven of these signs were selected for further testing in a laboratory study for legibility, understanding and driver preference. Sixty subjects representing a cross-section of drivers took part in the study, thirty at the Turner-Fairbanks Highway Research Center in McLean, Virginia and thirty at the University of Missouri--Rolla in Rolla, Missouri.
Two of the seven signs were word messages and five were symbolic signs. The results …
Home Treatment Devices Listing Organizations, Joseph L. Taraba
Home Treatment Devices Listing Organizations, Joseph L. Taraba
Agricultural Engineering Extension Updates
Today there is a need for consumer information to assess the multitude of drinking water treatment devices for home use as well as related private drinking water services. There are several organizations that have conducted or conduct on a continuing basis testing of water treatment devices and water treatment services.
Accidents Types Des Monteurs De Lignes Du Secteur De La Construction (Annexe), Évelyne Kedl, Lucie Laflamme, Lyne Marinacci
Accidents Types Des Monteurs De Lignes Du Secteur De La Construction (Annexe), Évelyne Kedl, Lucie Laflamme, Lyne Marinacci
Rapports de recherche scientifique
La première phase du projet dont il est ici question vise à résumer, en un nombre limité d’accidents types, les circonstances dans lesquelles les monteurs de lignes se blessent le plus souvent et les caractéristiques les plus courantes de leurs lésions. À cette fin, les fichiers "pairés" d’accidents des trois entrepreneurs participants et de la CESST ont servi à décrire 236 accidents en utilisant un total de 15 variables. Le traitement de ces données, rétrospectives, a conduit à la reconstruction de six classes d’accidents différentes les unes des autres.
Ces classes se distinguent d’abord par le genre de l’accident. Nos …
Accidents Types Des Monteurs De Lignes Du Secteur De La Construction, Évelyne Kedl, Lucie Laflamme, Lyne Marinacci
Accidents Types Des Monteurs De Lignes Du Secteur De La Construction, Évelyne Kedl, Lucie Laflamme, Lyne Marinacci
Rapports de recherche scientifique
La première phase du projet dont il est ici question vise à résumer, en un nombre limité d’accidents types, les circonstances dans lesquelles les monteurs de lignes se blessent le plus souvent et les caractéristiques les plus courantes de leurs lésions. À cette fin, les fichiers "pairés" d’accidents des trois entrepreneurs participants et de la CESST ont servi à décrire 236 accidents en utilisant un total de 15 variables. Le traitement de ces données, rétrospectives, a conduit à la reconstruction de six classes d’accidents différentes les unes des autres.
Ces classes se distinguent d’abord par le genre de l’accident. Nos …