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Articles 1021 - 1050 of 1221
Full-Text Articles in Entire DC Network
The Mechanisms Of Ethanol-Induced Damage To The Developing Cerebellum: Effects On The Cerebellar Granule Cells., Zheng Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
Alcohol exposure causes developmental abnormality known as Fetal Alcohol Syndrome (FAS), featured with central nervous system (CNS) dysfunction. The cerebellum is vulnerable to ethanol toxicity. Developmental exposure to ethanol depletes the number of cerebellar granule cells; however, the underlying mechanisms are unknown. A potential mechanism for ethanol-induced neuronal depletion is to reduce the pool of neuronal progenitors. The progression of the cell cycle is regulated by a family of protein kinases called cyclin-dependent kinases (CDKs). We hypothesize that ethanol interferes with the CDK system and disrupts the cell cycle kinetics in cerebellar granule progenitors (CGPs). Pregnant rats were fed ad …
The Effects Of Science Engineering Mathematics Aerospace Academy (Semaa) Participation On Engagement Rates Of Sixth- And Seventh-Grade Students In Regular Mathematics Classes., Donna R. Carr
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to investigate the impact of participation in a short-term, co-curricular, mathematics and science program (Science Engineering Mathematics Aerospace Academy, SEMAA) on the engagement rates of sixth and seventh grade students in public school mathematics classes. The outcome variable (engagement) was measured with the Student Record of Behavior at three time intervals. A 22.3 mixed ANOVA design was utilized to investigate three main effects (participation, grade level, and time) and their primary and secondary interactions. Results reflected no discernable impact of the SEMAA program on student engagement rates. Conclusions include alignment of ancillary programs and …
The Effects Of Resistance Training And Oral Creatine Supplementation On Muscle Fiber Morphology, Strength And Activities Of Daily Living In Patients With Charcot -Marie -Tooth Disease., Robert David Chetlin
The Effects Of Resistance Training And Oral Creatine Supplementation On Muscle Fiber Morphology, Strength And Activities Of Daily Living In Patients With Charcot -Marie -Tooth Disease., Robert David Chetlin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Resistance exercise and creatine supplementation independently improve strength and function in patients with neuromuscular diseases, but the effectiveness of the two combined in patients with Charcot-Marie-Tooth (CMT) disease is unknown. Additionally, no study has examined gender differences in strength and activities of daily living (ADLs) in CMT patients before or after resistance training, nor has ADL performance been used for exercise prescription. Purposes. (1) To examine the effects of resistance training with and without creatine supplementation on muscle, strength and function in patients with CMT; (2) To compare effects of 12 weeks training on strength and ADLs in CMT men …
The Effect Of Emphysema On Adaptation Of Peripheral Skeletal Muscle To Different Loading Conditions In The Syrian Golden Hamster., Anne K. Swisher
The Effect Of Emphysema On Adaptation Of Peripheral Skeletal Muscle To Different Loading Conditions In The Syrian Golden Hamster., Anne K. Swisher
Graduate Theses, Dissertations, and Problem Reports (ETD)
Purpose. Severe emphysema affects peripheral skeletal muscle with only partial reversal with exercise training. The effects of mild emphysema on adaptation of peripheral skeletal muscle to different loading conditions are unknown. Methods. Male Syrian golden hamsters were instilled with saline (S, n = 6) or porcine elastase (E, n = 12) to induce mild emphysema prior to removal of the right Achilles tendon to induce overload (OV) of plantaris muscle and unloading (UL) of gastrocnemius. The left limb served as control (C). Six animals were sacrificed at 1, 3, and 5 months. Fiber type, citrate synthase activity (CS), and capillary …
Prepartum Milking Of Holstein Heifers: Prepartum Mastitis And Factors Affecting Heifers Milked Prepartum., Nancy Jean Kerr
Prepartum Milking Of Holstein Heifers: Prepartum Mastitis And Factors Affecting Heifers Milked Prepartum., Nancy Jean Kerr
Graduate Theses, Dissertations, and Problem Reports (ETD)
A field study was conducted on two commercial dairy production units to determine the effects of milking Holstein heifers prepartum on prepartum mastitis, reproduction, milk production, and overall health. Holstein heifers were assigned at least 30 days prior to the expected date of parturition to one of three treatment groups: Non-Prepartum Milked Control, Postpartum Milked (C; Farm 1, n = 31; Farm 2, n = 15), Prepartum Milked (P; Farm 1, n = 68; Farm 2, n = 16); and Prepartum Milked with Mastitis (M; Farm 1, n = 27; Farm 2, n = 4). Prepartum milking consisted of twice …
Beyond The Walls: A Research Study Of Eighth-Grade Students Mentored In A Hospital Setting., Aileen Grattan
Beyond The Walls: A Research Study Of Eighth-Grade Students Mentored In A Hospital Setting., Aileen Grattan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research study was designed to evaluate twelve eighth-grade students participating in the fourth year of a mentoring program to determine what effect the mentoring experience would have on the students' sense of a scientific community, their understanding of scientific knowledge and process skills and attitudes toward science. The mentoring program was developed through a partnership established between the researcher, an eighth-grade science teacher at a junior high school, and an administrator of a local hospital, to provide educational opportunities for students mentored by medical professionals. The research design included qualitative and quantitative methods of analysis. The qualitative instruments were …
The Role Of Retrochiasmatic Neurons In Seasonal Breeding In The Ewe., Steven L. Hardy
The Role Of Retrochiasmatic Neurons In Seasonal Breeding In The Ewe., Steven L. Hardy
Graduate Theses, Dissertations, and Problem Reports (ETD)
A seasonal change in GnRH secretion is well documented in sheep. An alteration in the estradiol (E2) negative feedback mechanism is thought to promote ovarian quiescence via GnRH inhibition during spring and summer months in response to changes in day length. It is evident that the hypothalamus becomes hypersensitive to E2 during this time, but the mechanism driving the shift is not completely understood. However, it is clear that A15 dopaminergic (DA) neurons in the retrochiasmatic area (RCh) play a key role in these seasonal changes. These neurons mediated E2 negative feedback in anestrus, but do not respond to E2 …
Effects Of Nitrogen Fertilizer And Red Clover (Trifolium Pratense L.) Component On Productivity Of Grass-Legume Mixed Swards, Chamil Salinda Kandapola
Effects Of Nitrogen Fertilizer And Red Clover (Trifolium Pratense L.) Component On Productivity Of Grass-Legume Mixed Swards, Chamil Salinda Kandapola
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effects of two levels of red clover (low and high) and three levels of N fertilizer (0, 28, 56 N kg ha-1) on herbage accumulation and quality of grass-legume mixed swards were studied. Total herbage accumulation of the mixtures with high legume percentage was significantly higher than those with low legume percentage and this was most pronounced at second harvest. Swards high in legumes also had higher crude protein concentrations and lower weed percentages than those low in legumes. Although the effect of N on herbage accumulation was not significant, an increase was observed for crude protein concentration of …
Sport Fish Consumption Advisory For West Virginia, William Alvin Warnick
Sport Fish Consumption Advisory For West Virginia, William Alvin Warnick
Graduate Theses, Dissertations, and Problem Reports (ETD)
The risk based sport fish consumption advisory protocol, West Virginia Sport Fish Consumption Advisory Guide (the Guide), was drafted for the state. Fish were collected from ten West Virginia sites (5 previously identified as contaminated, 5 previously identified as uncontaminated). Fish samples were collected, processed and analyzed for total mercury concentration and Aroclors (PCBs). Recommended meal frequencies were calculated from contaminant levels and based on the Guide. Mean fillet sample contaminant levels were compared to composite sample levels and found to require the same level or in one case a more protective of consumption advisory. Ten composite samples had Aroclor …
Differentially Expressed Genes In The Mutualistic Neotyphodium Coenophialum-Tall Fescue Interaction, Linda Joy Johnson
Differentially Expressed Genes In The Mutualistic Neotyphodium Coenophialum-Tall Fescue Interaction, Linda Joy Johnson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tall fescue (Lolium arundinaceum), an agronomically important forage grass, is typically associated with a mutualistic asexual fungus Neotyphodium coenophialum. Endophytic fungal growth is confined to the intercellular spaces of the plant and induces no symptoms. The endophyte partner enhances its host's fitness by improving nutrient acquisition as well as by providing protection from various abiotic and biotic stresses. However, grass-endophyte partnerships are detrimental to grazing livestock, due to the production of an array of fungal alkaloids. To investigate this interaction at the molecular level, suppressive subtractive hybridization was used to identify differentially expressed genes from the symbiosis. In total, twenty-nine …
Impact Of Early Childhood Perceptions And Experiences On Oral Health Practices In Later Life, Johnna Marie Guzzi
Impact Of Early Childhood Perceptions And Experiences On Oral Health Practices In Later Life, Johnna Marie Guzzi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Older adults are at a higher risk for numerous oral and systemic diseases. Oral conditions experienced by the elderly are believed to be cumulative. The purpose of this study was to determine if a relationship exists between early childhood dental care practices/experiences and perceived oral health needs of persons 60 years of age and older who are participants of three West Virginia facilities for the elderly (N = 90). Individuals were interviewed utilizing a two-part 21-item survey. Data analyses, including analysis of variance and tests of chi square, were conducted using the JMP program. Although individuals felt dental health was …
Opportunities And Occupations In Animal And Veterinary Sciences Based On The Current Careers Of West Virginia University Alumni, Stacey Michelle Hawkins
Opportunities And Occupations In Animal And Veterinary Sciences Based On The Current Careers Of West Virginia University Alumni, Stacey Michelle Hawkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
The primary purpose of this study was to examine the career opportunities for graduates completing a Bachelor of Science degree in Animal and Veterinary Sciences at West Virginia University as measured by the first and current careers of alumni. The target population consisted of all alumni that graduated between the years 1991 and 2001. Over 61.6% of the West Virginia University Animal and Veterinary Science graduates were satisfied with both their first career selection as well as their current career. After graduating with a Bachelor of Science degree two-thirds of the graduates decided to pursue a post-graduate degree. Professional careers, …
Effect Of Dietary Protein On Plasma Uric Acid, Body Weight, And Oxidative Stress In Broilers, Maribel Machin
Effect Of Dietary Protein On Plasma Uric Acid, Body Weight, And Oxidative Stress In Broilers, Maribel Machin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Uric acid is an important antioxidant due to its role as a free radical scavenger, and methods to elevate its plasma concentration may be important in animal health. In a preliminary study, the effect of dietary protein on plasma uric acid (PUA) was determined in 3-wk-old chicks. Twenty-four broiler chicks were randomly assigned to 4 diets: low protein (LP) containing 10% casein, medium protein (MP) containing 20% casein, high protein (HP) containing 45% casein and a commercial diet (COD) for 2-wks. PUA concentration increased in chicks fed HP diet and declined in chicks fed LP. In the principal study, PUA …
Organic Carbon And Fertility Of Forest Soils On The Allegheny Plateau Of West Virginia, Anthony Blaine Jenkins
Organic Carbon And Fertility Of Forest Soils On The Allegheny Plateau Of West Virginia, Anthony Blaine Jenkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
Soil series occurring above 1020 m in elevation in the Monongahela National Forest in West Virginia were sampled and analyzed for soil organic and soil microbial biomass carbon as well as various fertility parameters. Additionally, vegetative biomass estimates were made at the sampling sites. The soil series sampled (established and tentative) are frigid, well and moderately-well drained inceptisols and spodosols, covered by northern hardwood or spuce-dominated forests. The purpose of the work was to document soil organic carbon (SOC), vegetative organic carbon (VOC), and soil microbial biomass carbon (SMBC) of selected horizons, and nutrient stock ranges for these extensive series, …
Development Of The Induced Gonadotropin Surge Mechanism In The Prepubertal Heifer, Timothy David Maze
Development Of The Induced Gonadotropin Surge Mechanism In The Prepubertal Heifer, Timothy David Maze
Graduate Theses, Dissertations, and Problem Reports (ETD)
A longtitudinal study was performed in prepubertal heifer calves to determine when the individual components of the hypothalamic-pituitary-ovarian axis were capable of functioning. In study 1, the hypothalamus and anterior pituitary of prepubertal dairy heifers were challenged with exogenous hormones (estradiol and GnRH, respectively) to determine at what age gonadotropin surges could be induced. Two-, four-, six-, and eight-month-old heifer calves were challenged with GnRH or estradiol. Blood was sampled from the jugular vein every 15 minutes for 6 hours or hourly for 30 hours, for the two treatments, respectively. Heifers in each age group released LH in response to …
Modeling Of Soil Phosphorus Sorption And Control Of Phosphorus Pollution With Acid Mine Drainage Floc, Bharpoor Singh Sekhon
Modeling Of Soil Phosphorus Sorption And Control Of Phosphorus Pollution With Acid Mine Drainage Floc, Bharpoor Singh Sekhon
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study was conducted to investigate and model phosphorus sorption in soils and to study the effectiveness of acid mine drainage (AMD) floc in controlling phosphorus (P) loss to surface runoff from soils. Phosphorus sorption capacity of surface and subsurface horizons of four benchmark soil series - Berks, Huntington, Lindside, and Monongahela - of West Virginia was measured. The soils of these four series were loaded with increasing amounts of P up to 60% of their P retention capacity. Though amount of P released to the solution increased with increase in degree of P saturation, most of the soils did …
Interaction Between Positive And Negative Effectors Of Embryonic And Postnatal Muscle Growth In The Chicken And The Mouse, Scott Allen Gahr
Interaction Between Positive And Negative Effectors Of Embryonic And Postnatal Muscle Growth In The Chicken And The Mouse, Scott Allen Gahr
Graduate Theses, Dissertations, and Problem Reports (ETD)
Myostatin, belonging to the TGF-beta family, negatively regulates skeletal muscle growth. The current study was conducted to assess the efficacy of in ovo administration of exogenous myostatin antagonist (MA) to enhance skeletal muscle growth and improve feed efficiency of broilers.;Growth hormone secretion is under the control of a pair of hypothalamic factors, growth hormone releasing hormone and somatostatin. The growth hormone secretagogue receptor (GHSR) and its endogenous ligand represent a novel third mechanism regulating the release of growth hormone. Early chicken embryonic development, prior to day 14, has been proposed to be independent of GH. However, recent evidence shows that …
Stress Response Genes In The Human Proximal Tubules, Doyeob Kim
Stress Response Genes In The Human Proximal Tubules, Doyeob Kim
Graduate Theses, Dissertations, and Problem Reports (ETD)
The heat shock proteins (hsps) are believed to provide protection against a variety of insults such as elevated temperature, heavy metals and chemical agents. The goal of this study was to determine if the immortalized HK-2 human proximal tubule cell line could provide a model system to study the stress response of the proximal tubule cell. Heat stress, elevated temperature at 42.5°C for 1 hr, caused a marked increase only in hsp 70 mRNA and protein, but not that of hsp 27 or hsp 60 mRNA and protein. Similar results were obtained when the cells were subjected to 100 muM …
Effect Of Peptidoglycan-Polysaccharide Complex On Reproductive Efficiency And Mastitis In Sheep, Ida Holaskova
Effect Of Peptidoglycan-Polysaccharide Complex On Reproductive Efficiency And Mastitis In Sheep, Ida Holaskova
Graduate Theses, Dissertations, and Problem Reports (ETD)
Bacterial infections associated with mastitis reduce pregnancies in cattle. Effects on pregnancy and incidence of mastitis in sheep were investigated after immunization with peptidoglycan-polysaccharide (PG-PS) and killed cells from Strep. pyogenes. Rambouillet (n = 100) and mixed breed (n = 18) ewe lambs were immunized (∼d42 and 22 before breeding) with PG-PS (30mugPG/kg/bw) or killed cells or were not immunized (Control, n = 117). IgG antibodies were detected by ELISA. Ewes were bred at synchronized estrus. All immunized and half of non-immunized ewes were challenged with PG-PS (60mugPG/kg/bw) d5 after breeding. Although proportion of ewes pregnant at d42 did not …
Relative Abundance, Temporal Distribution, And Functional Feeding Groups Of Aquatic Insects In Two First-Order Southwestern Pennsylvania Streams, Judith S. Steinberg
Relative Abundance, Temporal Distribution, And Functional Feeding Groups Of Aquatic Insects In Two First-Order Southwestern Pennsylvania Streams, Judith S. Steinberg
Graduate Theses, Dissertations, and Problem Reports (ETD)
Two first to second order streams (Kent Run and Munnell Hollow) at Ryerson Station State Park, Greene County, Pennsylvania, were compared as to water parameters (dissolved oxygen, hardness, temperature, pH, and current velocity), species diversity, and abundance of both immature and adult insects. Samples were taken biweekly for one year from May, 1999 through April, 2000 for a total of 26 sampling periods. Data were analyzed using a repeated measures ANOVA. Kent Run had lower dissolved oxygen, higher pH and hardness, lower temperatures, and higher current velocity. A total of 137 taxa were collected at both streams. Of the total …
Comparison Of Buffered Grazing Systems For Beef Cattle, Charles R. Wolfe Iii
Comparison Of Buffered Grazing Systems For Beef Cattle, Charles R. Wolfe Iii
Graduate Theses, Dissertations, and Problem Reports (ETD)
To evaluate the productivity of a rotational versus continuous grazing system for beef production within a buffer grazing system, thirty crossbred beef cows and their calves were randomly assigned to one of two grazing systems replicated twice over three years of the experiment. Each replication of the rotational system was stocked with 8 cow/calf pairs while the continuous system was stocked with 7 cow/calf pairs. The grazing season was divided into 3 periods to aid in analysis. Period 1 was further divided into grazing cycles consisting of 4 weeks each. Pasture growth during cycle I was found to be higher …
Herbal Supplement Education In Dental Hygiene Curricula, Lisa Elena Lisauckis
Herbal Supplement Education In Dental Hygiene Curricula, Lisa Elena Lisauckis
Graduate Theses, Dissertations, and Problem Reports (ETD)
While there is evidence in the literature of herbal supplement education in other disciplines, inclusion in dental hygiene curricula is not reported. The purpose of this study was to assess the prevalence and extent of herbal supplement education in the 256 accredited dental hygiene programs in the United States. A survey was sent to program directors. Data analyses, including frequencies, cumulative frequencies, percentages, analyses of variance, and test of Chi Square were conducted using JMP program. Surveys revealed 63% of respondents (n = 160) included herbal supplement education and primarily incorporated it in the pharmacology course (67%). Statistically significant differences …
Sensitivity Of State Aid Allocation To Measures Of Needs And Resources In Local Governments, Adam Dale Baus
Sensitivity Of State Aid Allocation To Measures Of Needs And Resources In Local Governments, Adam Dale Baus
Graduate Theses, Dissertations, and Problem Reports (ETD)
This analysis examines the sensitivity of state intergovernmental aid, per capita, to measures of resources, infrastructure, social services, social problems and demographics in Northern and Southern local governments in 1982 and 1992. Time-periods chosen are based on the potential for domestic policies born through new federalism to harm local governments through lesser amounts of available state aid. North and South are compared to account for possible regional differences. Regardless of region and time however, redistribution efforts to local governments with higher levels of need and lower levels of resources are not particularly good. Redistribution tendencies present in 1982 declined by …
Comparison Of Broiler Breeder Production And Fertility In A Colony Cage System With Two Different Floors Versus A Slat-Floor System, Joseph Wayne Massey
Comparison Of Broiler Breeder Production And Fertility In A Colony Cage System With Two Different Floors Versus A Slat-Floor System, Joseph Wayne Massey
Graduate Theses, Dissertations, and Problem Reports (ETD)
Two separate trials were conducted to compare egg production, egg weight, shell thickness, albumin height, fertility, and mortality of naturally mated broiler breeders maintained on either a slat and litter floor or in two tiered colony cages. In the first trial there was no difference (P > 0.05) in egg production between the two treatments. There was also no significant difference in hen mortality. Higher (P < 0.05) egg shell quality, albumin height, and shell thickness were observed in the cage maintained hens. Lower fertility (P < 0.05) was observed in the cage maintained hens. In the second trial production parameters were compared in naturally mated broiler breeders maintained on slat and litter floor, in colony cages on the original slats, and in colony cages on a modified slats. The modified slats were constructed from plastic and had a two piece design which produced a slight cushioning on the top of the slats. Egg production and mortality were not different (P > 0.05) among the three treatments. Eggshell thickness, albumin height, and shell thickness were lower (P > 0.05) in the litter and slat floor but not between the two cage treatments (P > 0.05). Fertility was higher (P …
Influence Of Mass Of Ruminal Contents On Voluntary Intake And Digesta Passage Of A Concentrate And A Forage Diet, Marcela Ana Whetsell
Influence Of Mass Of Ruminal Contents On Voluntary Intake And Digesta Passage Of A Concentrate And A Forage Diet, Marcela Ana Whetsell
Graduate Theses, Dissertations, and Problem Reports (ETD)
To evaluate the influence of mass of rumen contents on voluntary intake and rumen function, five ruminally cannulated steers (500 kg) were fed a hay diet ad libitum in a 5 x 5 Latin square experiment. Mass of ruminal contents was altered by adding varying weights of modified tennis balls to the rumen before the initiation of each experimental period. Treatments consisted of 50 balls with a specific gravity (SG) of either 1.0, 1.1, 1.2, 1.3 or 1.4 and the total weight of the balls was 7.45 kg, 8.50 kg; 9.25 kg, 10.55; and 11.55 kg, respectively. Daily DMI was …
Effect Of Increased Energy In A Restricted Diet On Bone Mineral Composition And Breaking Load Of Young Rat Tibias, Marcia Ann Romanchak
Effect Of Increased Energy In A Restricted Diet On Bone Mineral Composition And Breaking Load Of Young Rat Tibias, Marcia Ann Romanchak
Graduate Theses, Dissertations, and Problem Reports (ETD)
Osteoporosis is a major health problem in the United States and those that are on energy restricted diets such as anorectic subjects. Thirty Wistar strain, young male rats were fed diets with varying quantities of fat for a period of four weeks (energy intake 67--75% of requirement). The rat tibias' physical properties were measured. Bone mineral composition testing was conducted for calcium, magnesium, and phosphorus, on the tibia shaft. There were no significant differences among the parameters of length, diameter, volume, density, bone bending (elasticity), fracture load, and minerals between experimental diets. There was a negative association between bending and …
Retention Of Early Pregnancy And Its Relationship To Serum Progesterone In Dairy Cattle, Melanie J. Starbuck
Retention Of Early Pregnancy And Its Relationship To Serum Progesterone In Dairy Cattle, Melanie J. Starbuck
Graduate Theses, Dissertations, and Problem Reports (ETD)
Factors affecting pregnancy maintenance between 28 and 67 days of gestation were studied in dairy cows (N = 211). Beginning on day 28 to 37 post breeding, cows were examined by ultrasonography for a viable pregnancy. Pregnant cows were re-examined for pregnancy losses during the late embryonic (≤day 45) and early fetal stages up to day 67. Overall pregnancy loss was 11%, mostly occurring before day 45. Cows with two corpora lutea maintained fewer pregnancies than cows with one corpus luteum. Pregnancy retention was less when concentrations of progesterone were low during days 28 to 37. The embryo apparently died …
Relationship Between Maternal Prenatal Vitamin Use And Infant Iron Status, Jennie Pringle Wilkins
Relationship Between Maternal Prenatal Vitamin Use And Infant Iron Status, Jennie Pringle Wilkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
Subjects were fifty-six women and their infants who were between the ages of six months and twenty-four months. They were clients of Special Supplemental Nutrition Program for Women Infants and Children (WIC) clinics. The WIC clinics were in the West Virginia counties of Ritchie, Gilmer, Calhoun, Braxton, Mason, Jackson, Pleasants, and Greenbrier where the anemia rates were greater than 10%.;Information concerning WIC participation, prenatal vitamin use, history of breast feeding, infant birth weight, and pre-term delivery were obtained through questionnaires. Infants' serum ferritin level was obtained through venous blood and analyzed.;This ex post facto study found no significant result in …
Combined Effects Of Water Chemistry, Canopy Cover, And Stream Size On Benthic Macroinvertebrates Along A Central Appalachian Stream Continuum, Jesse Adam Bopp
Combined Effects Of Water Chemistry, Canopy Cover, And Stream Size On Benthic Macroinvertebrates Along A Central Appalachian Stream Continuum, Jesse Adam Bopp
Graduate Theses, Dissertations, and Problem Reports (ETD)
I sampled benthic macroinvertebrates along a 25.2 km stream continuum in the Central Appalachian Mountains of West Virginia from May---October 2000. Six components of macroinvertebrate community structure and function were measured: density, biomass, richness, community taxa similarity, feeding group composition, and metric composition. I quantified these components to determine if localized variation in alkalinity and canopy cover would modify stream continuum predictions. Localized variation in alkalinity and canopy cover significantly affected macroinvertebrate structure and function and modified stream continuum predictions. Results indicated that alkalinity was the primary determinant of macroinvertebrate structure and function, and that the effects of canopy cover …
Microbial Ecology Of Freshly Sawn Yellow-Poplar Lumber ( Liriodendron Tulipifera L.) In Two Seasons, Mark Ryan Mikluscak
Microbial Ecology Of Freshly Sawn Yellow-Poplar Lumber ( Liriodendron Tulipifera L.) In Two Seasons, Mark Ryan Mikluscak
Graduate Theses, Dissertations, and Problem Reports (ETD)
Each year, the forest products industry sustains considerable product loss due to a reduction in market value of lumber brought about by microbial discoloration. The current practice of treating green lumber with chemical biocides to protect it from discoloration, although successful, is a potential hazard to both the environment and human life. One potential alternative to chemical biocides is biological control. The most recent success in the field of biological control has been achieved in the agricultural industry by first studying the microbial ecology of the substrate in which the biologically based preservative is to be used. Literature on microbial …