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Tang, Sherry – NCSSSMST Journal, 2012
Plasticizers are chemical additives that enhance plastic flexibility. They are ubiquitous environmental contaminants and are commonly found in river and lake waters (Fromme et al 2002). The present study aimed to investigate the effects of a water-soluble plasticizer, dibutyl phthalate (DBP) on developing Medaka ("Oryzias latipes") embryos. Three…
Descriptors: Developmental Delays, Developmental Stages, Science Education, Science Experiments
Candal, Carmen – NCSSSMST Journal, 2012
The effectiveness of five different enzymes as treatments against Staphylococcus biofilm growth was measured in the presence of antibiotics and alone. Protease was the least effective enzyme in biofilm removal with all antibiotics, and pectinase was the most effective with dicloxacillin and clindamycin. Also, dicloxacillin was the most effective…
Descriptors: Experimental Groups, Comparative Analysis, Control Groups, Biochemistry
Carpenter, Matt – NCSSSMST Journal, 2009
The purpose of this study was to determine whether increased levels of UV radiation and temperatures from global warming have a significant impact on dissolved oxygen (DO) output from the alga, "Euglena," which affects other organisms in the ecosystem. The original hypothesis stated that if temperature was increased along with exposure time to…
Descriptors: Radiation, Climate, Plants (Botany), Ecology
Asai, Elizabeth; Cao, Sharon – NCSSSMST Journal, 2009
The purpose of this investigation was to determine if three Western species of the Panax, Lycium, and Astragalus genera had antibacterial and/or antioxidant properties, and how their properties compared to Eastern herbs in the same genera. The group hypothesized that when compared, the corresponding herbs would have identical antibacterial and…
Descriptors: Plants (Botany), Microbiology, Radiation, Science Experiments
Hackney, Zachary Carl – NCSSSMST Journal, 2007
Previous work on fish, frogs, and salamanders, showed the ability for estrogen (EE2) and anthropogenic endocrine disruptors to skew sex ratios and cause hermaphrodism. This study addressed the effects of estrogens on growth and development rates of African clawed frog tadpoles ("Xenopus laevis") during their gender determination stages. The…
Descriptors: Animals, Sex, Development, Biochemistry
Moore, Lewis Ryan – NCSSSMST Journal, 2006
The purpose of this research was to determine how metal oxide used in a thermite reaction can impact the production of nanoparticles. The results showed the presence of nanoparticles (less than 1 micron in diameter) of at least one type produced by each metal oxide. The typical particles were metallic spheres, which ranged from 300 nanometers in…
Descriptors: Inorganic Chemistry, Metallurgy, Science Experiments, Chemistry
Brown, Courtney – NCSSSMST Journal, 2006
Sediment oxygen demand (SOD) is the rate that dissolved oxygen leaves the water column in a body of water due to the build-up and decomposition of organic carbons in the sediment. The introduction of organic materials changes the chemistry of streams, and many chemical reactions occurring in bodies of water, with the exception of photosynthesis,…
Descriptors: Earth Science, Ecology, Organic Chemistry, Water Pollution
Sliva, Amy – NCSSSMST Journal, 2001
Aims to determine the pollution content of the water at two locations on Buffalo Creek, Evington, Virginia, by examining the benthic macro-invertebrates that inhabit the test sites. (Author/YDS)
Descriptors: Biology, Ecology, Higher Education, Science Experiments