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Full-Text Articles in Life Sciences

The Effects Of Photoperiod And Melatonin Injections On The Reproductive System Of Pinealectomized Male Mice Mus Musculus, Icr Strain, John Earnest Constantine Aug 1981

The Effects Of Photoperiod And Melatonin Injections On The Reproductive System Of Pinealectomized Male Mice Mus Musculus, Icr Strain, John Earnest Constantine

Master's Theses

One hundred two male mice , Mus musculus, ICR strain, age four weeks, were obtained. Fifty-one mice were pinealectomized and 51 were sham operated. The animals were divided into three photoperiod groups: 1.5L:22.5D, 14L:10D, 24L; 0D. The mice were subcutaneously injected daily with 10 ug melatonin or control solution from post-operative day J to post-operative day 60, On post-operative day 60 representatives of each photo­ period-surgery-injection regimen were paired with females. The remaining animals were killed and several organs were removed and weighed, Melatonin injections were progonadal in pinealectomized mice and inhibitory in sham mice in several instances. Histological examination …


The Spatial Distribution Of Phytoplankton In Westhampton Lake, Richmond, Virginia, James William Newlin Aug 1981

The Spatial Distribution Of Phytoplankton In Westhampton Lake, Richmond, Virginia, James William Newlin

Master's Theses

The hypothesis is that spatial distributions of phytoplankton standing crop and photosynthetic capacity in Westhampton Lake are homogeneous was tested. Distributions were analyzed with respect to horizontal and vertical planes separately and combined. The study was divided into three time period: 1) late summer stratification, 2) early fall mixing, and 3) fall turnover, based on isothermal lines of the lake at the deepest station. Phytoplankton standing crop was measured by spectrophotometric and fluorometric methods. The photosynthetic capacity was measured flurometrically. Combined horizontal and vertical spatial distribution of standing crop was clumped for the entire lake and during each time period. …


Population Stability Of Three Species Of Zooplankton In Westhampton Lake, Richmond, Virginia, James Christopher Conyers May 1981

Population Stability Of Three Species Of Zooplankton In Westhampton Lake, Richmond, Virginia, James Christopher Conyers

Master's Theses

Populations of zooplankton, Keratella cochlea's (Rotifera) Bosmina longirostris (Cladocera), and Mesocyclopsedax (Copepoda) were sampled in Westhampton Lake from June 30 to December 22, 1978. Population densities were estimated over time and analyzed for stability relative to the occurrence of rainfall. Two aspects of stability were used for analysis and given operational definitions as follows: Resistance - a population was resistant if its density was not more variable during periods of rain compared with periods of little or no rain; Persistence - a population was persistent if its density during periods of rain was not different from its density in periods …


Non-Suppressible Insulin-Like Activity, Glucose Hypercatabolism, And Hypoglycemia In Sepsis, Rico E. Viray Jan 1981

Non-Suppressible Insulin-Like Activity, Glucose Hypercatabolism, And Hypoglycemia In Sepsis, Rico E. Viray

Master's Theses

No abstract provided.


The Role Of Suppressor T Lymphocytes In Renal Allograft Rejection, Fred Barry Pearlman Jan 1981

The Role Of Suppressor T Lymphocytes In Renal Allograft Rejection, Fred Barry Pearlman

Master's Theses

No abstract provided.


Selection Of Somatic Cell Hybrids Between Baby Hamster Kidney Cells And Human Embryonic Kidney Cells To Study Bk Virus Early Gene Expression, Sara Lynn Ehlke Jan 1981

Selection Of Somatic Cell Hybrids Between Baby Hamster Kidney Cells And Human Embryonic Kidney Cells To Study Bk Virus Early Gene Expression, Sara Lynn Ehlke

Master's Theses

No abstract provided.


Chemotherapeutic Effects Of The Extracts Of Allium Cepa And Allium Sativum On Infectivity Of Tobacco Mosaic Virus, Min-Lan Chang Jan 1981

Chemotherapeutic Effects Of The Extracts Of Allium Cepa And Allium Sativum On Infectivity Of Tobacco Mosaic Virus, Min-Lan Chang

Master's Theses

No abstract provided.


Correlation Of Injected Amygdalin And Urinary Thiocyanate In Jax C57 Bl/Ksj Mice, Maria A. Manhardt Jan 1981

Correlation Of Injected Amygdalin And Urinary Thiocyanate In Jax C57 Bl/Ksj Mice, Maria A. Manhardt

Master's Theses

No abstract provided.


A Species Diversity Study Of The Benthic Population Of Cedar Lake, Illinois, Noreen L. Connolly Jan 1981

A Species Diversity Study Of The Benthic Population Of Cedar Lake, Illinois, Noreen L. Connolly

Master's Theses

No abstract provided.


Microelectrophoretic Separation Of Isozymes In Relation To Aging In The Hydroids Campanularia Flexuosa And Cordylophora Lacustris, Patricia Marie Brown Jan 1981

Microelectrophoretic Separation Of Isozymes In Relation To Aging In The Hydroids Campanularia Flexuosa And Cordylophora Lacustris, Patricia Marie Brown

Master's Theses

No abstract provided.


The Effect Of Field Corn (Zea Mays) Residues On The Germination And Growth Of Field Corn, Alice J. Stubblefield Jan 1981

The Effect Of Field Corn (Zea Mays) Residues On The Germination And Growth Of Field Corn, Alice J. Stubblefield

Master's Theses

No abstract provided.


The Vascular Flora Of The Kersey-Crump Creek Watershed, Hanover County, Virginia, Eddie Reeves Smith Jan 1981

The Vascular Flora Of The Kersey-Crump Creek Watershed, Hanover County, Virginia, Eddie Reeves Smith

Master's Theses

A floristic survey was conducted in the Kersey-Crump Creek watershed, Hanover County, Virginia from spring 1978 through summer 1980. This upper Coastal Plain area (42 km2) near the fall line yielded 514 species of vascular plants, representing 334 genera and 113 families. Four hundred and seventy-nine county records were established. Panax trifolium, colonizing a rich wooded creek bottom, was the only plant rare to Virginia. Voucher specimens are deposited in the herbaria of the University of Richmond, Virginia, and the College of William and Mary, Williamsburg, Virginia.