Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (2511)
- Arts and Humanities (2345)
- Social and Behavioral Sciences (2328)
- Physical Sciences and Mathematics (2077)
- Education (1641)
-
- Medicine and Health Sciences (1077)
- Psychology (924)
- Life Sciences (769)
- Art and Design (764)
- Earth Sciences (591)
- Chemistry (565)
- Architecture (505)
- Electrical and Computer Engineering (481)
- Geology (475)
- Mechanical Engineering (463)
- Educational Administration and Supervision (383)
- Sociology (371)
- English Language and Literature (369)
- Communication (355)
- Civil and Environmental Engineering (350)
- Materials Science and Engineering (343)
- Computer Sciences (338)
- Chemical Engineering (324)
- Music (312)
- Student Counseling and Personnel Services (304)
- Nursing (283)
- Physics (274)
- Religion (258)
- Civil Engineering (250)
- Biology (241)
- Institution
- Keyword
-
- Graphic design (78)
- Music (71)
- Education (61)
- Product design (56)
- Fiction (49)
-
- Memory (47)
- Identity (45)
- Painting (45)
- Adaptive reuse (41)
- Art education (41)
- Religion, General (41)
- Photography (40)
- Architecture (39)
- Design (37)
- Geology (36)
- Art (35)
- Theology (35)
- Women (35)
- Architecture and community (34)
- Apologetics (32)
- Mass Communications (32)
- Sculpture (32)
- Nature (31)
- Curriculum (30)
- Fantasy (30)
- Furniture design (30)
- Graphic Design (30)
- Philosophy (30)
- Architecture and society (29)
- Community (29)
- Publication Year
- Publication Type
Articles 11641 - 11670 of 12097
Full-Text Articles in Entire DC Network
Choral Procedures: Their Relevance To A Studied Group, Donald M. Decker
Choral Procedures: Their Relevance To A Studied Group, Donald M. Decker
Masters Theses
No abstract provided.
The Apparent Effects Of Rh Hapten Ingestion On The Circulating Blood Phosphorus, Barbara Lyke
The Apparent Effects Of Rh Hapten Ingestion On The Circulating Blood Phosphorus, Barbara Lyke
Masters Theses
The purpose of this work carried on at Western Michigan University during the past year is an attempt to elucidate further the action of Rh hapten within the body, or more specifically, the effect of its ingestion on the circulating blood phosphorus.
Some Properties Of Chrome-Magnesite Mixtures And Calcium Aluminate Cement-Magnesite Mixtures, Edward Charles Duderstadt
Some Properties Of Chrome-Magnesite Mixtures And Calcium Aluminate Cement-Magnesite Mixtures, Edward Charles Duderstadt
Masters Theses
"The knowledge of the physical and chemical properties of refractories is of great importance in determining their usefulness and application. The thermal expansion of refractories is of particular importance in that it affects the thermal stability of the product. A high coefficient of thermal expansion leads to greater spalling and destruction of the bricks in use. It is, therefore, desirable to develop compositions having low coefficients of thermal expansion. This investigation was undertaken (1) to determine some of the properties of chromite-magnesite refractory mixtures in an attempt to determine the optimum composition of these mixtures, the specific properties including thermal …
Unsteady State Heat Transfer From A Hot Body To A Liquid, Larry Clinton Atha
Unsteady State Heat Transfer From A Hot Body To A Liquid, Larry Clinton Atha
Masters Theses
"The problem investigated in this thesis is that of unsteady state heat transfer from a hot body to a liquid, a quenching problem. Unsteady state or transient heat transfer is heat transfer in which the temperature distribution changes with time.
If a hot body was suddenly quenched in a large mass of liquid, a film of vapor would form between the hot body and the liquid. For example, if a hot body was quenched in water a film of steam would form between the hot body and the water. It is the purpose of this thesis to determine the heat …
Linear And Vortex Flow Heat Transfer Coefficients, Edward Robert Schmidt Jr.
Linear And Vortex Flow Heat Transfer Coefficients, Edward Robert Schmidt Jr.
Masters Theses
"In order to make possible better, more efficient equipment, a higher and higher rate of heat transfer has been the goal of engineers for many years. The need for heat transfer rates never thought of 25 years ago has been brought about by the advent of modern high-performance devices such as nuclear reactors and rocket motors. "A heat release of about 40,000 Btu/hr.cu.ft. is considered good practice in a modern boiler, but in a rocket or a nuclear reactor it may be 1,000,000,000 Btu/hr.cu.ft." This heat must be removed by transfer to a coolant or converted into work or the …
The Effects Of Ultrasonically-Induced Cavitation Upon Dissolved Oxygen, Free Carbon Dioxide, And Bicarbonate Ion Concentration In Water, Charles Alvin Wentz Jr.
The Effects Of Ultrasonically-Induced Cavitation Upon Dissolved Oxygen, Free Carbon Dioxide, And Bicarbonate Ion Concentration In Water, Charles Alvin Wentz Jr.
Masters Theses
"Cavitation may be encountered in many scientific fields. Mechanical and civil engineers are concerned with the prevention of cavitation erosion in the design of turbines, propellers, underwater missiles, and similar structures. Biologists and physiologists are seeking more knowledge concerning the tensile strength of liquids, such as, tree sap and the formation of gas bubbles in the blood stream. Finally, the physicist and acoustical engineer must cope with the cavitation problem when working with underwater transducers, cavitation noise, and the propagation of acoustical signals through media in which cavitation is occurring.
There are many forces which hold a liquid together and …
Frequency Response Of Rotating Servo Components, Yehuda Rachovitsky
Frequency Response Of Rotating Servo Components, Yehuda Rachovitsky
Masters Theses
"The frequency response approach to the design of automatic controls is the dominant one today. This approach in a strict sense may be said to have started with a paper in 1932 by Dr. H. Nyquist, a physicist at the Bell Telephone Laboratories. In this paper Dr. Nyquist was concerned with the stability of feedback amplifiers. This work can be said to have made possible the transcontinental telephone as well as modern radio and television. Dr. Hendrick Bode, mathematician at the Bell Laboratory, extended the results of Dr. Nyquist and obtained some simple design criteria that enabled even technicians without …
A Preliminary Search For Subionizers, Joseph B. Hughes
A Preliminary Search For Subionizers, Joseph B. Hughes
Masters Theses
"A number of physicists of recent years have been attempting to explain the basic nature of the universe in terms of particles. A few particles have been predicted theoretically, and some of these, along with many others have appeared experimentally, Searches for them have presented some interesting experimental problems and brought forth some invaluable experimental apparatus. One of these devices is the Wilson cloud chamber, with which this thesis is concerned.
Of the particles that have been discovered thus far, only the electron and the proton appear to be stable. The rest ultimately decay by the emission of photons and …
Steady State Temperature Distribution In A Rotating Disk, George Henry Morgan
Steady State Temperature Distribution In A Rotating Disk, George Henry Morgan
Masters Theses
"The purpose of this investigation was to obtain an expression for the steady state temperature distribution of a disk of uniform thickness rotating at a constant speed in ambient air while absorbing heat through the periphery at a constant rate. Engineers encounter such problems in connection with brakes of several varieties. The general solution obtained here could be extended to similar physical problems such as grinding wheels, disk clutches, and so on.
A differential equation was obtained for the temperature in the disk by the application of Fourier's conduction law and Newton’s convection law. A solution of this equation was …
Lattice Constants, Thermal Expansion Coefficients And Perfection Of The Phase Tio, Hsiung Wei Li
Lattice Constants, Thermal Expansion Coefficients And Perfection Of The Phase Tio, Hsiung Wei Li
Masters Theses
"TiO is one of the intermediate phases in the titanium - oxygen system with a crystal structure of the sodium chloride type. The phase extends from about 22 to 29 weight or about 46 to 55 atomic percent oxygen. A comprehensive survey of the physical properties of the phase has been made in previous investigations (see review of literature), but only impure titanium was available at that time. Therefore, some revision of the measurements had to be made. Also, neither the thermal expansion coefficients nor the temperature at which the lattice constants were measured were reported.
For precision determination of …
Reaction To 1-Bromo-2, 3-Epoxybutane With Phenol In The Presence Of Boron Trifluoride, Robert F. Bridger
Reaction To 1-Bromo-2, 3-Epoxybutane With Phenol In The Presence Of Boron Trifluoride, Robert F. Bridger
Masters Theses
"It is the purpose of this investigation to study the reaction of phenol with 1-bromo-2,3-epoxybutane in the presence of boron trifluoride and to identify the reaction products in order to gain information which will be helpful in understanding the mechanism of the reaction"--Introduction, page 3.
An Elementary Teacher Enriches A Science Program, Ruth I. Good
An Elementary Teacher Enriches A Science Program, Ruth I. Good
Masters Theses
No abstract provided.
A Study Of The Importance Of The Fine Arts In A Balanced Curriculum, William O. Sargent
A Study Of The Importance Of The Fine Arts In A Balanced Curriculum, William O. Sargent
Masters Theses
No abstract provided.
A Comparison Of Chaucer's Troilus, Pandarus, And Criseyde With Those Of Shakespeare, Carolyn Miller Fischer
A Comparison Of Chaucer's Troilus, Pandarus, And Criseyde With Those Of Shakespeare, Carolyn Miller Fischer
Masters Theses
No abstract provided.
Some Differences In The Comedy Of Manners Plays From The Restoration To Somerset W. Maugham, Tressa C. Bennett
Some Differences In The Comedy Of Manners Plays From The Restoration To Somerset W. Maugham, Tressa C. Bennett
Masters Theses
No abstract provided.
A Study Of The East Richland High School Business Education Curriculum, James Allen Mcwilliams
A Study Of The East Richland High School Business Education Curriculum, James Allen Mcwilliams
Masters Theses
No abstract provided.
Effect Of Gamma Radiation On Selected Organic Protective Coatings, James W. Johnson
Effect Of Gamma Radiation On Selected Organic Protective Coatings, James W. Johnson
Masters Theses
"The purpose of this investigation was to prepare pigmented and non-pigmented organic protective coatings and to irradiate them with gamma rays. The coatings received a constant radiation dose of eight million rads. Seven tests were performed on the various coatings. The data from the tests were tabulated so that a direct comparison could be made as to the effect of the radiation on the coatings. The data from the tests also enabled comparisons to be made to determine if the various pigments had imparted any specific properties that would be desirable in coatings being exposed to radiations"--Introduction, page 2.
Effect Of Concrete Shrinkage On Stresses In Reinforcing Steel, C. Raymond Nowacki
Effect Of Concrete Shrinkage On Stresses In Reinforcing Steel, C. Raymond Nowacki
Masters Theses
"Shrinkage is one of four phenomena that are considered as causing volume changes in concrete, the other three being creep, temperature change effects, and possible chemical disintegration. While all four are interrelated, the volume change due to loss of moisture is associated with the term shrinkage. Creep is the time-dependent change in volume resulting from external loads. A rise or fall of temperature will produce an expansion or contraction of concrete but also will affect the rate of shrinkage by increasing or decreasing the rate of moisture evaporation from the surface of the concrete.
In the design of concrete structures, …
The Use Of Chelating Agents In Inorganic Analysis, Richard K. Vitek
The Use Of Chelating Agents In Inorganic Analysis, Richard K. Vitek
Masters Theses
"The objectives of this investigation were; (1) to improve the existing gravimetric method of analysis for palladium with dimethylglyoxime by adding EDTA to the solution to chelate interfering metal ions: (2) to develop a new and better gravimetric method of analyses for palladium with a different organic ligand and employing a chelating agent such as EDTA or NTA to remove the interference of foreign ions"--Introduction, page 2.
Investigation Of The Geometric Effects Connected With The U-Effect-Iii, Anthony Edward Hoffman
Investigation Of The Geometric Effects Connected With The U-Effect-Iii, Anthony Edward Hoffman
Masters Theses
"Statement of Problem: The investigation reported herein is of the dependence of the voltage output due to the U-Effect-III upon the geometry of the tube. The geometry of the tube is defined to include the inner diameter of the tube as well as the size and number of the mercury and electrolyte drops. The previous experimental study of the effect did not include an investigation of the effects of the geometry of the tube, as defined above, on the voltage output. It seems that information as to the dependence of the output voltage on the geometry of the tube would …
Detection Of Buried Basement Highs By Airphoto Drainage Pattern Analysis, Reynolds And Wayne Counties, Missouri, Papken Aram Zarzavatjian
Detection Of Buried Basement Highs By Airphoto Drainage Pattern Analysis, Reynolds And Wayne Counties, Missouri, Papken Aram Zarzavatjian
Masters Theses
"Purpose and Scope: The purpose of this study is to determine if it is possible to detect buried Precambrian igneous hills in Wayne County and the larger part of Reynolds County in southeast Missouri by the use of aerial photo drainage pattern analysis.
The St. Francis Mountains are located in southeast Missouri. They form a part of the Precambrian basement complex, and have been exposed at the surface by the erosion of the lower Paleozoic sediments which covered them. Some of the hills which make up the St. Francis Mountains are exposed to a great degree, while others still have …
Surface Temperature Measurement Of Metal Undergoing Induction Heating, Ding-Yee Nee
Surface Temperature Measurement Of Metal Undergoing Induction Heating, Ding-Yee Nee
Masters Theses
"It is the object of this thesis to investigate the possibility of using thermoelectric pyrometry for surface temperature measurement of metal undergoing induction heating. The temperature range under investigation, as stated before, is 400 °F to 1250 °F. This research may actually be treated by two sections.
The first section concerns the methods of using thermocouples for ordinary surface temperature measurements. The second section concerns the effect, if any, on thermocouple e.m.f. readings while it is measuring the surface temperature of a metal undergoing induction heating. The first section of the investigation has been well covered by literature and will …
An Application Of Cathodic Sputtering To The Etching Of Metallographic Specimens, Robert Ruch
An Application Of Cathodic Sputtering To The Etching Of Metallographic Specimens, Robert Ruch
Masters Theses
"The U. S. Bureau of Mines at Rolla, Missouri has for some years been conducting research on manganese-copper alloys. The study of the physical metallurgy of these alloys -- dissimilar metal couples -- has always been complicated by the difficulty of satisfactorily etching this material. It was felt that by introducing a new etching technique, cathodic bombardment, satisfactory etching might be accomplished. On this basis the following research program was proposed:
1) To survey the present state of art of cathodic etching, etching by means of cathodic sputtering;
2) To design and construct suitable equipment for the experimental study of …
Paragenesis Of The Minerals In The Einstein Vein Madison County, Missouri, Robert P. Stevens
Paragenesis Of The Minerals In The Einstein Vein Madison County, Missouri, Robert P. Stevens
Masters Theses
"Selection of the Problem: The mineralogical problem of determining the paragenetic sequence of minerals in the Einstein vein, Madison County, Missouri, was suggested by Dr. O. R. Grawe, who previously had supervised a thesis by Joel Pomerene dealing with the geology of the area. Although considerable attention has been given to the mineralization along the vein, a specific study of the paragenetic relations has not been made. Paragenesis has, however, been discussed by others in papers dealing with the geology of the area. Such a study is extremely important in the establishment of a hypothesis of origin, and hence, an …
A Study Of Background In A Long Sensitive Time Wilson Cloud Chamber, Donald A. Rinker
A Study Of Background In A Long Sensitive Time Wilson Cloud Chamber, Donald A. Rinker
Masters Theses
"A long-sensitive time Wilson Cloud Chamber has been built and tested. A usable sensitive time of 2.5 seconds has been achieved by the use of a system of five expansion valves, the first three of which are used to obtain the sensitive time and the final two to continue the expansion at a supersaturation slightly less than critical in order to allow all droplets formed to grow in size and fall into the liquid. This system of continued expansion, coupled with delayed recompression, has been proved to reduce the background density in the chamber to an average operating value of …
Effect Of Hydrated Lime And Portland Cement On The Physical Properties Of Clay Soil For Highway Base Construction, Judson Leong
Effect Of Hydrated Lime And Portland Cement On The Physical Properties Of Clay Soil For Highway Base Construction, Judson Leong
Masters Theses
"The intent of this research is to determine the change in physical properties of a clay soil caused by the addition of 2, 4, 6, 8 and 10 percent of hydrated lime and portland cement. The effects of these admixtures on the physical properties of the soil were observed by comparing the results of various laboratory tests. The properties chosen for comparison were: (1) liquid limit, plastic limit and plasticity index; (2) shrinkage limit and shrinkage ratio; (3) density and optimum moisture; (4) resistance to penetration; (5) compressive strength and (6) cohesion and angle of internal friction. In order to …
Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard
Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard
Masters Theses
"The unit operation of liquid-liquid extraction has developed enormously in the last 20 years and is now recognized as one of the most important techniques for the physical separation and refining of industrial liquids. For years the conventional apparatus used for liquid-liquid extraction has been towers employing countercurrent flow of the liquids and equipped with various means to increase the interfacial area.
The countercurrent column consists of a tower through which flows a continuous phase while countercurrent to this flow is a stream of droplets (the dispersed phase). Provision is made for dispersing one phase with a settling region at …
A Statistical Approach To The Zonation Of A Petroleum Reservoir, Leroy Allan Beghtol
A Statistical Approach To The Zonation Of A Petroleum Reservoir, Leroy Allan Beghtol
Masters Theses
"The problem of dividing a reservoir into distinct permeability zones, in order to predict fluid flow and thereby the production history of the field, has long troubled the petroleum engineer. As a solution to this problem a new statistical method for zoning a reservoir was developed, using a modification of the analysis of variance technique. The application of the statistical zonation procedure to permeability data obtained from eight closely spaced wells substantiated the validity and effectiveness of the new method in determining distinct permeability zones"--Abstract, page iii.
Iterative Solutions Of Kirkwood's Integral For Liquid Argon, Eugene D. Fabricius
Iterative Solutions Of Kirkwood's Integral For Liquid Argon, Eugene D. Fabricius
Masters Theses
"A liquid or a dense gas may be regarded either as a very imperfect gas in which multiple collisions are frequent or as a distorted crystal in which the long range order has been lost. The crystal-like approach has not led to formal solutions, but it has led to several approximate treatments which can be used to give numerical results.
The two main types of approaches which have been used are: the cell theories, in which the liquid is regarded as a distorted crystal with one molecule located at or near each lattice point; and the hole theories, in which …
An Improved Long Sensitive Time Wilson Cloud Chamber, Clarence W. Mettenburg
An Improved Long Sensitive Time Wilson Cloud Chamber, Clarence W. Mettenburg
Masters Theses
"The discovery of numerous new particles in recent years such as mesons and hyperons causes one to speculate about the possible existence of still other particle types….
A cloud chamber seems to be a most suitable means of detecting particles ionizing less than the minimum ionization of the electron because it is capable of detecting almost all the ions produced. The cloud chamber makes it possible to study not only a wide range of ionization but also many fine details of track structure which would go unnoticed by other means of detection….
With the information and experience gained by the …