Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Effects Of Wastewater Effluent On Fish Fin Morphology Of Larval Fathead Minnows (Pimephales Promelas) And Swimming Performance Of Smallmouth Buffalo (Ictiobus Bubalus), Seth Michael Bogue
Effects Of Wastewater Effluent On Fish Fin Morphology Of Larval Fathead Minnows (Pimephales Promelas) And Swimming Performance Of Smallmouth Buffalo (Ictiobus Bubalus), Seth Michael Bogue
Masters Theses
The Sangamon River flows across central Illinois and is mostly free flowing except in the city of Decatur where it is impounded to form Lake Decatur. The Sanitary District of Decatur (SDD) is located approximately three miles downstream of the Lake Decatur dam. For a significant portion of the year, the stretch of the Sangamon River downstream of SDD is dominated by effluent due to limited discharge from the Lake Decatur dam. This has resulted in heavy nutrient loading, most notably phosphorus, and elevated levels of nickel and other compounds in the downstream section of the river. Smallmouth buffalo ( …
The Relationship Between Whole Brain Catecholamine Depletion In Carassius Auratus And The Exposure To Inescapable Shock In A Learned Helplessness Paradigm, Roderick J. Misunis
The Relationship Between Whole Brain Catecholamine Depletion In Carassius Auratus And The Exposure To Inescapable Shock In A Learned Helplessness Paradigm, Roderick J. Misunis
Masters Theses
Learned helplessness is a psychological concept that describes the subsequent escape-avoidance behavior of experimental subjects who are exposed to uncontrollable stressors. Subjects after treatment are unable to respond in situations where escape is possible. Two major theorists, Seligman and Weiss, have proposed explanations concerning the phenomena. Seligman feels that the subject is unable to respond due to the fact that the exposure to an uncontrollable stressor has caused him to learn to be "helpless". Weiss feels that the inability to respond can best be described by alterations in the subject's brain neurochemistry, specifically the neurotransmitter norepinephrine. This paper is an …
Comparative Effects Of Two Avoidance Paradigms Upon Ethanol Self-Selection, Richard O. Shellenberger Ii
Comparative Effects Of Two Avoidance Paradigms Upon Ethanol Self-Selection, Richard O. Shellenberger Ii
Masters Theses
Twelve adult male rats were given free access to a two bottle free-selection of tap water or a 10% ethanol/tap water solution in the home cage for a period of 140 consecutive days with the alcohol consumption data in the form of mg absolute ETOH/g subject weight collected daily. This study incorporated three stages. Phase I was a 40 day period of alcohol acclimation with alcohol consumption during the second 20 days constituting the baseline consumption rate. Mean baseline alcohol consumption was used to block subjects into three groups. The second phase of the study consisted of an 80 day …
The Effects Of Crowding On The Diurnal Ascorbic Acid Levels Of Albino Rats, Mary Jo Barr
The Effects Of Crowding On The Diurnal Ascorbic Acid Levels Of Albino Rats, Mary Jo Barr
Masters Theses
The adrenal physiology of the albino rat was studied through the measurement of adrenal ascorbic acid levels. A cyclic phenomenon was observed which follows the diel periodicity of the animal. Ascorbic acid values were found to be characteristically higher in males than in females. A similar difference was also seen in populations divided into young animals (body weight less than 175 grams) and old animals (body weight greater than 175 grams). Crowding, induced by manipulating the area of cage space per gram of body weight, was observed to be a definite stressor and caused the adrenal ascorbic acid levels to …
The Effects Of Acute Stress On Adrenal Ascorbic Acid Levels, Robert Joseph Collier
The Effects Of Acute Stress On Adrenal Ascorbic Acid Levels, Robert Joseph Collier
Masters Theses
The diurnal rhythm of adrenal ascorbic acid (DAR) displays an inverse relationship to the diurnal rhythm of circulating levels of plasma corticosteroids. Alloxan monohydrate, 175 mg/kg body weight was given subcutaneously to albino rats to determine the effect of the diabetic state on the DAR. A total of 200 female albino rats were divided into two study groups. Study Group I was composed of 150 animals divided into populations of 15, each including 3 controls. Study Group II was composed of populations of 5, each group containing all controls or all alloxinated rats. The populations of 15 were sacrificed at …