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Articles 3391 - 3420 of 3726
Full-Text Articles in Entire DC Network
Photoperiodism And Dormancy In Silver Maple Seedlings, Maria Regis Kilkenny
Photoperiodism And Dormancy In Silver Maple Seedlings, Maria Regis Kilkenny
Masters Theses
No abstract provided.
The Hemoglobin Of Tubifex Tubifex, Lalitchandra Vrajlal Vora
The Hemoglobin Of Tubifex Tubifex, Lalitchandra Vrajlal Vora
Masters Theses
The hemoglobin of Tubifex tubifex is found in solution in the blood of the worm in cells as in vertebrates. The binding of oxygen to the hemoglobin can be followed spectrophotometrically. A peak of absorbtion at 540 nm is fairly constant under different condition, while a peak at 575 nm disappears from the spectrum when oxygen is removed. The hemoglobin contains heme, non-heme iron and protein.
Binding of oxygen to the hemoglobin was found to be dependent on the concentration of the hemoglobin, at low concentrations (4.16 x 10-6 M), oxygen could not be removed from the hemoglobin. Only …
The Conductance Of Some Non-Rigid Bolaform Electrolytes, William Terry Schmidt
The Conductance Of Some Non-Rigid Bolaform Electrolytes, William Terry Schmidt
Masters Theses
Bolaform electrolytes are those which contain two or more charges separated by an inert framework. These are intermediate in structure between simple electrolytes and polyelectrolytes. Since these are similar to both synthetic and biological electrolytes, this investigation has been undertaken to determine some of their properties in solution.
The sodium and magnesium salts of ethane, propane, butane, pentane, hexane and decane α,ω-disulfonates were prepared. Each acid was prepared by refluxing the α,ω-dibromide of the desired salt with sodium sulfite. The sodium and magnesium salts were prepared by ion-exchange techniques.
The conductance of each salt was determined in methanol utilizing the …
Old Field Succession In Pinellas County, Florida, Roger T. Poole
Old Field Succession In Pinellas County, Florida, Roger T. Poole
Masters Theses
No abstract provided.
Ethnobotanical Studies On Selected Plants Of Northeastern Mexico, Wayne M. Pichon
Ethnobotanical Studies On Selected Plants Of Northeastern Mexico, Wayne M. Pichon
Masters Theses
No abstract provided.
Broomsedge In Illinois, David F. Kunz
A Study Of Health Education In The Public Schools And Community Of Tomah, Wisconsin, Bernita Helen Wildes
A Study Of Health Education In The Public Schools And Community Of Tomah, Wisconsin, Bernita Helen Wildes
Masters Theses
No abstract provided.
The Impact Of Kaiser Bauxite Company On Western St. Ann Parish, Jamaica, Shirley A. Anderson Hallaron
The Impact Of Kaiser Bauxite Company On Western St. Ann Parish, Jamaica, Shirley A. Anderson Hallaron
Masters Theses
No abstract provided.
Water Quality And Benthos Of A Small East Central Illinois Stream, With A Selected Literature Review, Kenneth Lloyd Brummett
Water Quality And Benthos Of A Small East Central Illinois Stream, With A Selected Literature Review, Kenneth Lloyd Brummett
Masters Theses
Polecat Creek is an occasionally intermittent stream which drains approximately 18,368 acres in eastern Coles County, Illinois. It travels 15.2 miles through cropland and a partially wooded valley before it enters the Embarrass River 3 miles upstream from Lake Charleston. The stream ranges from 0.5 foot to 5 feet deep at a normal water level, with an average depth of 16 inches. It averages 12 feet wide, with a range from 4 to 20 feet.
A water quality study with 5 stations along the stream was conducted from January 1971 to July 1971. A qualitative benthos study at the same …
The Effects Of Desoxycorticosterone, Hydrocortisone, And Prednisone On Myogenesis In Vitro, Gregory K. Nienaber
The Effects Of Desoxycorticosterone, Hydrocortisone, And Prednisone On Myogenesis In Vitro, Gregory K. Nienaber
Masters Theses
In order to obtain proper muscle development in tissue culture, certain conditions must prevail. There is a delicate balance of factors, and elimination of even one of these factors leads to poor and improper development. Muscle cells grown in the absence of fibroblasts usually fail to differentiate. Therefore, proper development depends upon the presence of two cell types: myoblasts and fibroblasts. Investigators have demonstrated that the fibroblasts are necessary in that they produce collagen which is necessary for proper muscle development. The present study has shown that desoxycorticosterone, hydrocortisone, and prednisone at concentrations of 10, 1, and 0.1 ug/ml of …
Preliminary Observations On The Effects Of Treflan To Fishes, P. Bradley Latvaitis
Preliminary Observations On The Effects Of Treflan To Fishes, P. Bradley Latvaitis
Masters Theses
Treflan E.C. is a selective, preemergence, soil incorporated herbicide. Preliminary tests were made to evaluate its effects at concentrations of 0.75, 1.275 and 1.8 p.p.m. on twenty species of fresh water fishes in the laboratory. The herbicide was proven to be a powerful fish toxicant. Centrarchus, Cichlasoma centrarchus, was the most resistant fish tested, while Bluegill, Lepomis macrochirus, was among the least resistant. Treflan E.C. decomposes and degrades rapidly. It was also found to interact with plastics. Further studies are necessary to provide a complete investigation of the effects of Treflan on Fishes.
A Comparison Of Nocturnal Restlessness Of Caged Thrushes And Migration Of Free Thrushes, Charles Goodwin Kjos
A Comparison Of Nocturnal Restlessness Of Caged Thrushes And Migration Of Free Thrushes, Charles Goodwin Kjos
Masters Theses
Nocturnal activity (Zugunruhe) of eight caged, radio-tagged thrushes (Hylocichla spp.) was compared by signal analysis with the occurrence of migration in 16 free, radio-tagged thrushes over a 37-night period during the autumn of 1970 in central Illinois. The study was conducted to determine the extent of synchrony of Zugunruhe and migration in these nocturnal migrants in fall. Zugunruhe frequently occurred on nights when there was no migration, but migration occurred only on nights when at least 50 per cent of the caged birds were active. Except for one departure which was atypical in several respects, migration occurred …
Biomonitoring Of Organochlorine Insecticides Using The Clam, Amblema Plicata, Terry M. Hogan
Biomonitoring Of Organochlorine Insecticides Using The Clam, Amblema Plicata, Terry M. Hogan
Masters Theses
No abstract provided.
Range And Optimum Growth Concentrations Of Phosphate And Nitrate For Chlamydomonas Reinhardtii, Thomas E. Hill
Range And Optimum Growth Concentrations Of Phosphate And Nitrate For Chlamydomonas Reinhardtii, Thomas E. Hill
Masters Theses
A study was conducted on the alga Chlamydomonas reinhardtii to determine the range and optimum growth concentrations of phosphate and nitrate. There are only a few species of algae for which this type of data is known. Inorganic nutritional data is basic to the understanding of the complexities of phytoplankton ecology and eutrophication.
The "plus" strain of this heterothallic alga was cultured in a TRIS-buffered inorganic medium with various concentrations of sodium phosphate and potassium nitrate and adjusted to a pH of 7.4. The axenic cultures were evaluated at the end of 6 days with a spectrophotometer, at a wavelength …
Nitrate-Phosphate Levels Of A Small Mid-Western Lake, Pamela Kay Harmon
Nitrate-Phosphate Levels Of A Small Mid-Western Lake, Pamela Kay Harmon
Masters Theses
No abstract provided.
Fraction Of Bacterial Ribosomes, Katty S. F. H. Yang
Fraction Of Bacterial Ribosomes, Katty S. F. H. Yang
Masters Theses
No abstract provided.
The Useful Seed Plants And Plant Products Of Kenya, Elizabeth A. Muthiani
The Useful Seed Plants And Plant Products Of Kenya, Elizabeth A. Muthiani
Masters Theses
No abstract provided.
Exploring The Role Of Various Education Strategies In National Economic Development, Donald F. Depew
Exploring The Role Of Various Education Strategies In National Economic Development, Donald F. Depew
Masters Theses
No abstract provided.
Drug Use And Abuse: Suggestions For Teaching In The Junior High School, Ardiccio Daniel Morales
Drug Use And Abuse: Suggestions For Teaching In The Junior High School, Ardiccio Daniel Morales
Masters Theses
No abstract provided.
The Effects Of Several Chemical Agents On Short Term Memory, Michael J. Bedecs
The Effects Of Several Chemical Agents On Short Term Memory, Michael J. Bedecs
Masters Theses
No abstract provided.
Participation Of The Renin-Angiotensin System In The Control Of Vascular Capacity During Hemorrhagic Hypotension, James Robert Powell
Participation Of The Renin-Angiotensin System In The Control Of Vascular Capacity During Hemorrhagic Hypotension, James Robert Powell
Masters Theses
Introduction
Review of the Literature
Severe hypotension has long been held as being one of the most potent stimuli for activation·of the mechanisms responsible for circulatory homeostasis. It has been accepted that the most immediate response to hypotension involves activation of the autonomic nervous system causing an increased vascular tone. In addition to various neurogenic mechanisms that function to cause an increase in vascular tone, several humeral mechanisms have also been implicated.
Rocha e Silva and Rosenberg (1969) described the release of vasopressin (ADH) from the posterior lobe of the pituitary in response to hemorrhage in the dog. They postulated …
A Biosystematic Study Of Cacalia Atriplicifolia L. With Emphasis On Its Life History, Tso Pen Chang
A Biosystematic Study Of Cacalia Atriplicifolia L. With Emphasis On Its Life History, Tso Pen Chang
Masters Theses
No abstract provided.
A Comparative Study Of The Helminth Fauna Of Salmo Gairdneri Rich. From Three Different Environments: A Hatchery, A Lake And, A River, Jose Felipe Ribeiro Amato
A Comparative Study Of The Helminth Fauna Of Salmo Gairdneri Rich. From Three Different Environments: A Hatchery, A Lake And, A River, Jose Felipe Ribeiro Amato
Masters Theses
No abstract provided.
Change In Cysteine And Total Basic Amino Acid Contents In Regenerating Planaria, Lynn Gunnison
Change In Cysteine And Total Basic Amino Acid Contents In Regenerating Planaria, Lynn Gunnison
Masters Theses
No abstract provided.
The Palmar Dermatoglyphics Of Macaca Fascicularis: Compared With Data On Macaca Fuscata, Ronald G. Cauble
The Palmar Dermatoglyphics Of Macaca Fascicularis: Compared With Data On Macaca Fuscata, Ronald G. Cauble
Masters Theses
No abstract provided.
Existentialism And The Freedom Theme, Kalmain D. Smith
Existentialism And The Freedom Theme, Kalmain D. Smith
Masters Theses
No abstract provided.
Peripheral Blood Changes In Canada Geese And The Reproductive Condition Of Three Michigan Flocks, William B. Potter
Peripheral Blood Changes In Canada Geese And The Reproductive Condition Of Three Michigan Flocks, William B. Potter
Masters Theses
No abstract provided.
Interest And Pupil Dilation: A Print Advertising Pre-Test, Roy Douglas Adler
Interest And Pupil Dilation: A Print Advertising Pre-Test, Roy Douglas Adler
Masters Theses
No abstract provided.
A Histochemical Study Of The Neurosecretory Cells In The Sub Pharyngeal Ganglia And Ventral Nerve Cord Of Lumbricus Terrestris And Their Response To The Removal Of The Suprapharyngeal Ganglia And To Osmotic Regulation, Bernard F. Orenstein
Masters Theses
No abstract provided.
Triplet-Triplet Energy Transfer In Enzyme-Inhibitor Complexes, Ronald Earl Hauxwell
Triplet-Triplet Energy Transfer In Enzyme-Inhibitor Complexes, Ronald Earl Hauxwell
Masters Theses
No abstract provided.