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Articles 61 - 66 of 66
Full-Text Articles in Sustainability
Basic Skills Capstone A
Activities
In the late spring and summer, many parts of the United States experience smog alert days - days when the concentration of pollutants in the air has been considered unhealthy. Many of these pollutants are produced by automobiles - particularly hydrocarbons, carbon monoxide, nitrogen oxides and, indirectly, ozone. Most discussion of the adverse effects of smog center on humans, and the effects on other forms of life, such as plants, are scarcely mentioned. So how does air pollution from automobiles affect plant growth? Let's think about how this hypothesis might be tested. Two problems must be addressed. The first is …
Measurement
Activities
In general, you are quite familiar with measurements, as almost any occupation requires measurements of some kind. Carpenters measure boards for cutting, nurses measure blood pressure in patients, tailors measure fabric for garments, and advertising executives measure the public's acceptance of their sales pitches. You will therefore undoubtedly be utilizing measurement in your chosen career, regardless of the field you enter. Measurement plays a particularly large role in science. In their studies, scientists gather data, and to do this they use measurements. Scientists measure the concentration of gases in the atmosphere, the growth of organisms under varying conditions, the rate …
Statistics And Graphing
Activities
Statistics - they're all around us, and we're exposed to them every day. They allow us to summarize large volumes of mathematical information, and so are found wherever there's data to be presented. Let's say you're watching your favorite college football team, and the game has come down to a last second thirty-five yard field goal attempt for the win. When describing the kicker's past performance in this range, the play-by-play announcer doesn't list all of the kicker's attempts one by one and their outcome, he simply states the percentage of kicks made in this yard range. If the kicker's …
Experimental Analysis
Activities
Central to good science are accurate observations, testable hypotheses, well-designed experiments or other tests, and reasonable data analyses. The purpose of Laboratory 1 is to introduce you to the basics of designing and analyzing experiments. The following two laboratory exercises will provide you with further steps in organizing and analyzing data. Many interesting experiments are impossible to do in a normal undergraduate science laboratory setting. For this reason, your introduction to designing an experiment that has relevance in “the real world” involves a computer simulation. The program involves a growing industry, that of farming fish. What is your favorite kind …
Design Of 3d Macroporous Inverse Opal Tio2 Binary And Ternary Composites Sensitized With Gold Nanoparticles And Cds Quantum Dots For Photocatalysis, Daniel A. Corella
Design Of 3d Macroporous Inverse Opal Tio2 Binary And Ternary Composites Sensitized With Gold Nanoparticles And Cds Quantum Dots For Photocatalysis, Daniel A. Corella
Master of Science in Chemical Sciences Theses
Materials composed of titanium (IV) oxide (TiO2) have received enormous scientific interest due to titania’s abundance, non-toxicity, and photocatalytic proficiency, however its large band gap limits its applicability under ambient conditions. Various attempts have been made to incorporate titania into composite systems to sensitize it for activity under a broader range of wavelengths. One such method includes utilizing narrow band gap semiconductors to form an electron transfer process analogous to photosynthesis referred to as a Z-scheme. Z-scheme systems can catalyze the decomposition of aqueous pollutants via generation of reactive oxygen species after input of sunlight. This work reports …
Increasing Population, Urbanization And Climatic Factors In Lagos State, Nigeria: The Nexus And Implications On Water Demand And Supply, Amidu Owolabi Ayeni Dr.
Increasing Population, Urbanization And Climatic Factors In Lagos State, Nigeria: The Nexus And Implications On Water Demand And Supply, Amidu Owolabi Ayeni Dr.
Journal of Global Initiatives: Policy, Pedagogy, Perspective
This study examines the impact of population, urbanization, and climate on water supply in Lagos State. Population baseline data used for this research were based on provisional census data of 1963, 1973, 1991 and 2006. Information on water production, demand and supply for this study were cleaned from the Nigerian Bureau of statistics (NBS), Lagos State Water Corporation reports of different years and relevant literature on Lagos water supply and demand. Urbanization assessment were based on multi-temporal imageries from Landsat MSS, TM, NigeriaSat-1 and Landsat ETM+ for 1975, 1995, 2007, and 2015 respectively. The Census data revealed that the population …