Standards for the Thermal Spray Industry

Author(s):  
M.M. Bhusari ◽  
R.A. Sulit

Abstract Thermal-spray standards in the United States are developed by several professional societies that include American Society for Testing and Measurement (ASTM) for test & measurements methods and composition specifications; American Welding Society (AWS) for feedstock, equipment acceptance, application process, training & certification; American Water Works Association (AWWA) for thermal-sprayed zinc as potable water tank lining; International Association of Corrosion Engineers (NACE) for corrosion protection processes and inspection; and Society of Protective Coatings (SSPC) for test & measurement methods, application specification & inspection in regards to protective coatings for the protection of steel. This paper provides information on various standards set by these bodies.

Author(s):  
Carolyn Marvin

Electrical professionals were the ambitious catalysts of an industrial shift from steam to electricity taking place in the United States and Western Europe at the end of the nineteenth century. According to Thomas P. Hughes, Alfred Chandler, and others, that shift was made possible by key inventions in power, transportation, and communication, and by managerial innovations based on them that helped rescale traditional systems of production and distribution. The retooling of American industry fostered a new class of managers of machines and techniques; prominent among them were electrical professionals. The transformation in which these professionals participated was no class revolution, as David Noble has pointed out. Their job was to engineer, promote, improve, maintain, and repair the emerging technical infrastructure in the image of an existing distribution of power. Their ranks included scientists, whose attention was directed to increasingly esoteric phenomena requiring ever more specialized intellectual tools and formal training, electrical engineers, and other “electricians” forging their own new identity from an older one of practical tinkerer and craft worker. Servingmaid to both groups were cadres of operatives from machine tenders to telegraph operators, striving to attach themselves as firmly as possible to this new and highly visible priesthood. Electrical experts before 1900 were acutely conscious of their lack of status in American society relative to other professional groups. The American Institute for Electrical Engineers (AIEE), founded early in 1884, was the last of the major engineering societies to be organized in the nineteenth century. Professional societies had already been organized by civil engineers in 1852, mining engineers in 1871, and mechanical engineers in 1880. The prestige of other groups in the engineering fraternity, especially civil and mechanical engineers, came less from membership in professional societies, however, than from other circumstances. Their practitioners hailed from the upper and middle strata of society, were often products of classical education, and had developed distinctive professional cultures of their own well before the formation of their national organizations. This gave them an established and even aristocratic niche in society.


PEDIATRICS ◽  
1979 ◽  
Vol 63 (3) ◽  
pp. 450-450
Author(s):  
R. J. H.

United States members of the American Academy of Pediatrics served as one of two control groups in a two-year effort by the American Society of Anesthiologists to investigate the health experience of anesthesia and operating room personnel in the United States. A segment of the American Nurses' Association served as the other control group. The results are of interest not only because of the involvement of pediatricians but because of the findings of adverse effects on pregnancy and the offspring where parents are exposed to anesthetic gases. The study was conducted by mailing questionnaires to 49,585 exposed operating room personnel in four professional societies and to 23,911 unexposed individuals in two professional societies serving as a comparison group. For female members of the operating room-exposed group, there was an increased risk of spontaneous abortion and various types of cancer. For both female and male exposed personnel, there was an increased risk of hepatic disease and of congenital malformations in their offspring. No increase in cancer was found in exposed males. Considerable evidence in animal studies supports the hypothesis of a cause-effect relationship between increase in the rates of these diseases and exposure to waste anesthetic gases. The present study is consonant with such a relationship but does not establish it. The report makes a strong recommendation for venting of waste anesthetic gases wherever used.


2019 ◽  
Vol 16 (3) ◽  
pp. 361-368
Author(s):  
Stephanie Jean Kohl

Caught between abusive partners and restrictive immigration law, many undocumented Latina women are vulnerable to domestic violence in the United States. This article analyzes the U-Visa application process experienced by undocumented immigrant victims of domestic violence and their legal advisors in a suburb of Chicago, United States. Drawing on theoretical concepts of structural violence and biological citizenship, the article highlights the strategic use of psychological suffering related to domestic violence by applicants for such visas. It also investigates the complex intersection between immigration law and a humanitarian clause that creates a path towards legal status and eventual citizenship.


2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Adriana Muniz De Almeida Albuquerque

The water purification procedure aims to obtain a product appropriate for human consumption, minimizing the presence of contaminants and toxic substances present in the water. Among these contaminants, some radionuclides of natural origin, such as uranium, thorium and their descendants, have been identified. Studies have shown that the stages of purification are quite effective in removing the radionuclides contained in water. The removal is due to co-precipitation of the radionuclides with the suspended materials and the precipitated material is accumulated and characterized as a Technologically Concentrated Natural Occurrence Radioactive Material (TENORM) by the United States Environmental Protection Agency (USEPA). This residue can present significant levels of radioactivity and, when discarded in the environment without any treatment, can generate a problem of environmental impact and a risk to the health of the population. In this way, some gamma emitters of the series of U, Th and the K-40 were determined in the residues generated at the Potable Water Treatment Plants – PWTPs in six municipalities of Pernambuco. The results obtain corroborate the classification of the residues generated in the PWTPs as concentrators of the radioactive components contained in the water supplied to the system and reinforce the need for the release to the environment, which is the usual way of disposal of this waste, to be carried out only after considering the radiological protection standards established.


Author(s):  
Thomas Borstelmann

This book looks at an iconic decade when the cultural left and economic right came to the fore in American society and the world at large. While many have seen the 1970s as simply a period of failures epitomized by Watergate, inflation, the oil crisis, global unrest, and disillusionment with military efforts in Vietnam, this book creates a new framework for understanding the period and its legacy. It demonstrates how the 1970s increased social inclusiveness and, at the same time, encouraged commitments to the free market and wariness of government. As a result, American culture and much of the rest of the world became more—and less—equal. This book explores how the 1970s forged the contours of contemporary America. Military, political, and economic crises undercut citizens' confidence in government. Free market enthusiasm led to lower taxes, a volunteer army, individual 401(k) retirement plans, free agency in sports, deregulated airlines, and expansions in gambling and pornography. At the same time, the movement for civil rights grew, promoting changes for women, gays, immigrants, and the disabled. And developments were not limited to the United States. Many countries gave up colonial and racial hierarchies to develop a new formal commitment to human rights, while economic deregulation spread to other parts of the world, from Chile and the United Kingdom to China. Placing a tempestuous political culture within a global perspective, this book shows that the decade wrought irrevocable transformations upon American society and the broader world that continue to resonate today.


Author(s):  
Matthew A. Shadle

American Catholicism has long adapted to US liberal institutions. Progressive Catholicism has taken the liberal values of democratic participation and human rights and made them central to its interpretation of Catholic social teaching. This chapter explores in detail the thought of David Hollenbach, S.J., a leading representative of progressive Catholicism. Hollenbach has proposed an ethical framework for an economy aimed at the common good, ensuring that the basic needs of all are met and that all are able to participate in economic life. The chapter also looks at the US Catholic bishops’ 1986 pastoral letter Economic Justice for All, which emphasizes similar themes while also promoting collaboration between the different sectors of American society for the sake of the common good.


Author(s):  
Andrew Valls

The persistence of racial inequality in the United States raises deep and complex questions of racial justice. Some observers argue that public policy must be “color-blind,” while others argue that policies that take race into account should be defended on grounds of diversity or integration. This chapter begins to sketch an alternative to both of these, one that supports strong efforts to address racial inequality but that focuses on the conditions necessary for the liberty and equality of all. It argues that while race is a social construction, it remains deeply embedded in American society. A conception of racial justice is needed, one that is grounded on the premises provided by liberal political theory.


Author(s):  
Andrew Valls

American society continues to be characterized by deep racial inequality that is a legacy of slavery and Jim Crow. What does justice demand in response? In this book, Andrew Valls argues that justice demands quite a lot—the United States has yet to fully reckon with its racial past, or to confront its ongoing legacies. Valls argues that liberal values and principles have far-reaching implications in the context of the deep injustices along racial lines in American society. In successive chapters, the book takes on such controversial issues as reparations, memorialization, the fate of black institutions and communities, affirmative action, residential segregation, the relation between racial inequality and the criminal justice system, and the intersection of race and public schools. In all of these contexts, Valls argues that liberal values of liberty and equality require profound changes in public policy and institutional arrangements in order to advance the cause of racial equality. Racial inequality will not go away on its own, Valls argues, and past and present injustices create an obligation to address it. But we must rethink some of the fundamental assumptions that shape mainstream approaches to the problem, particularly those that rely on integration as the primary route to racial equality.


2021 ◽  
Vol 13 (01) ◽  
pp. e73-e77
Author(s):  
Benjamin Steren ◽  
Ankur Parikh ◽  
Bilal Ahmed ◽  
Benjamin Young ◽  
Jayanth Sridhar ◽  
...  

Abstract Background The coronavirus disease 2019 (COVID-19) pandemic has had a profound impact on medical education, particularly for those applying to residency programs in 2020 to 2021. This study describes the challenges for potential ophthalmology residency applicants so that residency leadership can make informed decisions about changes to the process. Methods A survey was distributed electronically via social media and medical school ophthalmology interest groups from June 18, 2020 to July 2, 2020 to individuals interested in applying to ophthalmology residency in the United States. Survey questions included demographics and perceived impacts of COVID-19 on ability, confidence, intention to apply, and perceptions toward changes in the application process for the 2020 to 2021 ophthalmology residency application cycle. Results One-hundred sixteen total responses were received. Eighty-six responses (74%) were from individuals intending to apply in the 2020 to 2021 application cycle. Most respondents (86%) felt that their application would be affected by COVID-19 with 51% feeling less confident. Only four (5%) felt that they could adequately compile a rank list following a video interview, and over half (51%) anticipated applying to more programs than they originally intended. Academic plans of seven (8%) respondents were significantly altered via deferral of application or cancellation of a research year. Thirty-nine (45%) students reported delayed ophthalmology electives, with less than half (41%) feeling that they had adequate clinical exposure to be prepared for residency. Conclusion The COVID-19 pandemic has had a substantial impact on the 2020 to 2021 ophthalmology residency application cycle. As stakeholders begin to approach this cycle, these findings will help them make effective and informed decisions to create the best overall experience for all involved.


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