1,720,955 research outputs found
Temporal-spatial Changes in Water Qualities in the Governors State University Area
No full textTemporal-spatial changes in water quality refer to how the composition and characteristics of water bodies (like rivers, lakes, and oceans) vary over time and across different locations.Water quality is a complex and dynamic characteristic that can vary significantly within a given water body. The physical and complex properties of the water are complex which are spatial variations in water quality parameters, such as salinity, conductivity, TDS, temperature, and pH, are influenced by a multitude of factors. The main purpose of the project was to investigate the spatial variations in salinity, conductivity, TDS, temperature, and pH of the water in the Governors State University pond and identify factors influencing these variations. There will be significant spatial variations in water quality parameters within the pond due to factors such as depth, proximity to shoreline, and influence of stormwater runoff.The water quality near the shoreline will differ from the water quality from the other parts of the pond due to differences in the temperature, place and microorganisms. Seasonal variations will affect water quality parameters, particularly temperature and pH. Main objectives of the project includes to collect water samples from various locations within the pond at different depths. To compare the measured values to established water quality standards.To assess the potential impacts of spatial variations on aquatic ecosystems. After the experiment, results came out that the conductivity of the water can be affected by the presence of inorganic dissolved solids such as chloride or sulfate. Organic compounds like oil do not conduct electrical current well and results in low conductivity. Conductivity can also be affected by temperature. Warm water have a higher conductivity. Also, conductivity increases as salinity increases
The Effects of Eye Pressure and Diabetes on Vision
No full textVision is the primary sense that allow us to connect with the world. The optic nerve contains millions of nerve fibers that send visual messages to the brain which enables vision. The optic nerve is located at the back of each eye and connects directly to the brain. The optic nerve can be damaged due to high eye pressure and the condition is known glaucoma. The high eye pressure or intraocular pressure increases when the flowing fluid inside the eyes, also known as aqueous humor, builds up instead of draining out. The aqueous humor usually drains through the tissue called trabecular meshwork which is located at the angle where iris and cornea of the eyes meet. This presentation will explore how not only can intraocular pressure damage the vision, but diabetes can also lead to blindness. Diabetic retinopathy is an eye disease caused when the high blood sugar damages blood vessels in retina of the eyes. These damaged blood vessels can swell and leak, causing lack of blood flow and blurry vision. Therefore, regular eye examination can prevent vision loss by monitoring the intraocular pressure and checking for any swell, or leak of blood in the eyes
Comparing the Colony Formation of Pseudomonas aeruginosa on Daily and Monthly Contact Lenses with Different Oxygen Permeability
No full textBacterial presence and microbial formation on contact lenses can cause serious corneal infection including keratitis. There are many bacterial prevention methods available today, however, the chances of bacterial growth on contact lenses are still high in the absence of proper hygiene. The best way to prevent bacterial growth on contact lenses is by practicing proper hygiene and caring when handling contact lenses. The main objective of this study is to emphasize the importance of proper hygiene while inserting and removing contact lenses because bacteria can attach to contact lenses. Pseudomonas aeruginosa and four types of contact lenses with different oxygen permeability were used in the study. The research was done in the microbiology lab at Governors State University. Five contact lenses of each type were the control groups. It was placed in sterile tubes with 5 ml of TSB broth but without Pseudomonas aeruginosa culture. Five contact lenses from each type were placed in sterile tubes with 5mL TSB broth along with Pseudomonas aeruginosa culture in an incubator at 37 degrees Celsius for 24 hours. After 24 hours, all test tubes were taken out from the incubator. Swabbed the bacteria from the contact lenses and did a spread plate which was then placed in the incubator for 24 hours at 37 degrees Celsius. After 24 hours, since the colonies were too many to count, multiple serial dilutions were performed. Bacteria attached to the contact lenses that were placed in the test tubes with bacterial culture. Therefore, proper hygiene is important while handling contact lenses
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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