84 research outputs found
Health assessment, Franklin Elementary School : Phoenix, AZ, Maricopa County
No full textabstract: The objective of this health assessment is to provide an evaluation of current and future potential health risks that may result from exposure to residual organochlorine pesticides at Franklin Elementary School in Phoenix, Arizona. The school has been unoccupied for the past 10 years. The historic school building is being restored by the school district, which plans to reopen the building for use as an elementary school. Several organochlorine pesticides were discovered in the soil during routine environmental sampling done in conjunction with the renovation. In particular, chlordane and dieldrin, banned in the United States in the early 1980's, were present in concentrations above screening levels.Under cooperative agreement with the Agency for Toxic Substances and Disease Registry.Includes bibliographical references (p. 20-21)
Public health assessment, Klondyke Mine tailings : Klondyke, Graham County, AZ
No full textabstract: The objective of this health assessment is to provide an evaluation of the health risks that may result from exposure to abandoned mine tailings in Klondyke, Arizona. The tailings are remnants from an earlier flotation mill and mining operation that was in business from the early 1900's until 1950. Environmental data indicate that the 70,000 cubic yards of tailings that remain on the property have contaminated the soil and nearby creeks with heavy metals. This report evaluates the potential pathways of human exposure to the contaminated media. The contaminants of concern further evaluated are lead, arsenic, cadmium, mercury, manganese, and boron. Child health issues and community concerns are also an integral part of the evaluation.Under cooperative agreement with the Agency for Toxic Substances and Disease Registry.Includes bibliographical references (p. 27-28)
Ethnographical views on valaikāppu. A pregnancy rite in Tamil Nadu
No full textEthnographical views on valaikāppu. A pregnancy rite in Tamil Nadu Hancart Petitet, P. and Pragathi, V (2007). Indian Anthropologist. 37(1), January: 117-145. In Tamil Nadu, the end of the first pregnancy is marked by the celebration of the valaikāppu rite. This article provides an ethnography of the rite as it is performed in rural areas by scheduled castes people. The first part will present the social context of reproduction as well as the ritual aspects of the ceremony. The second part..
Health consultation, Hudson farm nitric acid release : July 1-2, 1998, Laveen, Arizona
No full textabstract: The Arizona Department of Health Services was asked by the Arizona Department of Environmental Quality to evaluate the potential health effects from inhalation of toxic vapors as a result of an unplanned, concentrated nitric acid release. According to Hudson Farms, at approximately 1 pm on July 1st, concentrated nitric acid began escaping from a small leak in a 33,000 gallon storage tank. By 4:30 pm, the first responding fire department units observed an orange colored plume that was moving with the wind
direction. The large plume continued to dissipate throughout the area until about 8:30 pm that night. Small amounts of nitric acid that was generally restricted to the Hudson property continued to leak until approximately 8 am the morning of July 2nd when pumping of acid waste waters into emergency storage tanks was completed. It is estimated by ADEQ that a total of 4,0 00-4,500 gallons of concentrated nitric acid was released from the storage tank. Approximately 600 people from the town of Laveen and the Gila River Indian Community were immediately evacuated. Residents were allowed re -entry to their homes the following day, July 2nd at approximately 10 am.Under cooperative agreement with the Agency for Toxic Substances and Disease Registry.Includes bibliographical references (p. 10)
Health consultation, private residence, Wickenburg, AZ, Maricopa County
No full textabstract: A resident of Wickenburg, Arizona and her husband reported experiencing some adverse health effects that she felt may be attributed to a recent pesticide application to her home. The family requested the Arizona Department of Health Services to evaluate whether the remaining levels of pesticides present in her home would cause any health effects. The resident reported to ADHS that their symptoms continued to worsen over time, and that the chemical continued to pool in their house even after being wiped up several times, so that she and her husband vacated the house. The couple underwent extensive testing , and are receiving oxygen treatment to alleviate their symptoms. No medical records have been submitted to ADHS for review, and it is difficult to conclusively analyze health outcome information as it has been self reported.Under cooperative agreement with the Agency for Toxic Substances and Disease Registry.Includes bibliographical references (p. 7)
IntoTheRabbitHole: A Web Application for Teaching Middle School Students About Search Algorithms
No full textAs artificial intelligence (AI) technology rapidly advances and integrates further into everyday life, building AI literacy in children is now more important than ever. AI literacy includes understanding key AI concepts such as search algorithms, which are foundational and have wide-ranging real-world applications. To support curricula that foster AI and computational literacy in K-12 students, we developed a novel, easy-to-use software tool to introduce this foundational topic by teaching two search algorithms to middle school children. We present IntoTheRabbitHole, an interactive web application where users help a rabbit find its carrot to learn about Depth First Search (DFS) and Breadth First Search (BFS). In this work, our research questions were: (RQ1) Can we develop an engaging and enjoyable web application to teach search algorithms?; (RQ2) Could we find evidence of student learning of Depth First Search and Breadth First Search from using our application?; and (RQ3) How do students compare Depth First Search and Breadth First Search after interacting with IntoTheRabbitHole? We collected both quantitative and qualitative data on student use of IntoTheRabbitHole at an after-school AI program. We found that IntoTheRabbitHole was successful in fostering an understanding of both DFS and BFS. Furthermore, we obtained a statistically significant result showing that interaction with IntoTheRabbitHole led to better performance on a DFS traversal pre- and post-survey item, indicating that many students learned DFS through interaction with our tool.Information Systems and Cyber Securit
Effect of multiple recurring weld repairs on the properties of a 690 MPa Quenched and Tempered steel
No full textAustralia’s Collins class submarines are made from a high strength quenched and tempered steel, BIS812 EMA. This steel has a minimum 690 MPa yield strength and it consists of a combination of macro and micro-alloying elements which contribute to both its high strength and high low-temperature toughness. After long exposure to seawater environments, localised corrosion damage occurs and this can lead to a reduction of steel plate thickness which can adversely affect the structural integrity of the hull. Corrosion damage can be repaired by removing the damaged region and rebuilding the area with weld deposits. Over the life of a vessel, corrosion damage at the same location can occur and recurring repair welding is preferable to plate replacement, as it is a more cost effective and timely procedure. Additionally, recurring butt welds on the hull may be required for the long-term sustainment of the submarines. All these recurring multiple repair welds may have a detrimental effect on the mechanical properties of the base plate, that is, in the heat affected zone (HAZ). There has been limited research published on the effects of multiple repair welds on the properties of steel. From the limited research that has been conducted, the nature of the weld repair, welding type and steel type having been identified as important factors affecting the mechanical properties of the HAZ. Besides, very few of these studies were specifically conducted on quenched and tempered steels. BIS812 EMA steel is a unique steel type; it is a quenched and tempered steel with macro-alloying elements (Cr, Mo, Ni) and microalloying additions (Nb, Ti, V and B). High strength submarine steels are generally macroalloyed and do not contain microalloying additions. As such, the limited research that has been conducted is not readily transferable to the recurring welding of BIS812 EMA steel. This research is focussed on analysing the effect of multiple repair welds on the steel and understanding the underlying mechanisms for the variation of mechanical properties and microstructure
Interval Valued intuitionistic Fuzzy Homomorphism of BF-algebras
No full textThe notion of interval-valued intuitionistic fuzzy sets was first introduced by Atanassov and Gargov as a generalization of both interval-valued fuzzy sets and intuitionistic fuzzy sets. Satyanarayana et. al., applied the concept of interval-valued intuitionistic fuzzy ideals to BF-algebras. In this paper, we introduce the notion of interval-valued intuitionistic fuzzy homomorphism of BF-algebras and investigate some interesting properties. Keywords: BF-algebras, interval valued intuitionistic fuzzy sets, i-v intuitionistic fuzzy ideals
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