ASME boiler and pressure vessel codeの許容応力の改訂
01 Aug 1970-Vol. 21, Iss: 8, pp 946-956
About: The article was published on 1970-08-01 and is currently open access. It has received 415 citations till now.
Citations
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21 Oct 2001-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the authors present the results of a study commissioned by the Fermilab Director on the feasibility of an intense neutrino source, based on a muon storage ring.
Abstract: We present the results of a study commissioned by the Fermilab Director on the feasibility of an intense neutrino source, based on a muon storage ring. Muon colliders have been discussed as an alternate route to very high-energy lepton colliders. As a by-product, such a collider would produce very intense neutrino beams because of the decaying muons circulating in the storage ring. In a dedicated storage ring, these neutrino beams could be produced in long straight sections which would point towards long, medium or short baseline detectors, opening up a whole new class of neutrino physics experiments because of the enormous neutrino flux that, in principle, could be achieved in such a facility as compared to more standard fixed target sources. Intense pion sources in combination with powerful emittance cooling strategies for the comparatively large muon emittance are necessary to make this type of neutrino source as well as a muon collider, feasible for a possible future high energy physics facility. The Neutrino Factory and Muon Collider collaboration studies the different subsystems being required and presently focuses on the layout of a neutrino source based on a 50 GeV Muon Storage Ring.
186 citations
28 Apr 2015
TL;DR: In this case, a combination of lung hamartomas and neuroendocrine tumor of the duodenum - gastrointestinal stromal tumor gives rise to diagnosis.
Abstract: Carney's triad is a rare non-hereditary condition characterized by gastrointestinal stromatic tumors (GIST, intramural mesenchymal tumors of the gastrointestinal tract with neuronal or neural crest of the cell origin), pulmonary chondromas and extraadrenal paragangliomas. Less than 100 cases have been reported worldwide. Carney's triad primarily affects young women (it means the age of early 20-s). Most patients initially have two of the three tumors (incomplete Carney's triad). The main symptoms at presentation are gastrointestinal bleeding, epigastric pain, anemia and palpable abdominal mass. These symptoms are related to the GIST, which occur in 99% of cases. Pulmonary chondromas (well-differentiated benign cartilaginous tumors) occur in approximately 80% of cases. They are often asymptomatic and may be unilateral (83%) or bilateral (32%). Secreting paragangliomas (typically extraadrenal and most often mediastinal) occur in approximately 50% of patients. The etiology is not completely understood. A case of Carney triad, which caused some difficulty and complexity of the diagnosis at the initial stage of case management. Due to the complex of diagnostic search, errors in the definitive diagnosis of the Triad Carney were found in almost all clinical cases, which are associated with diverse clinical diagnosis and complexities of individual nosology: gamartohondromy lung or gastrointestinal stromal tumor, or extraadrenal paraganglioma, and their combination in one patient in complete or incomplete. Thus, in this case, a combination of lung hamartomas and neuroendocrine tumor of the duodenum - gastrointestinal stromal tumor gives rise to diagnosis.
119 citations
TL;DR: In this article, a unified multiaxial fatigue damage model based on a characteristic plane approach is proposed, integrating both isotropic and anisotropic materials into one framework.
104 citations
Cites background from "ASME boiler and pressure vessel cod..."
...Keywords: Multiaxial fatigue; Characteristic plane; Metals; Composite laminates...
[...]
TL;DR: A review of recent efforts made by the different interested parties, in both academia and industry, in the development of corrosion fatigue (CF) lifetime prediction procedures can be found in this article.
Abstract: The synergistic combination of mechanical fatigue stresses and environmental agents acting together can be more detrimental than that of the summation of the contributions of each mechanism acting separately. Major attempts to understand the contribution of the different agents (microstructure, chemical composition of environment, temperature, loading conditions, etc.) have been reported in the literature. Nevertheless, current knowledge is insufficient to address life estimation with a sound physical basis from the initiation of localised corrosion (such as pitting) to the estimation of crack propagation. Major simplifications and assumptions have been required in the development of life prediction methodologies. This paper reviews recent efforts made by the different interested parties, in both academia and industry, in the development of corrosion fatigue (CF) lifetime prediction procedures. The paper mainly focuses on the methodologies proposed in the literature for oil and gas, nuclear, energ...
83 citations
Posted Content•
TL;DR: In this paper, the impact of globalization on the engineering profession has been studied, and the authors have sought to assess the comparative engineering education of the United States and its major new competitors, India and China; identify the sources of current U.S. trend towards outsourcing; and learn what the United states can do to keep its economic edge.
Abstract: Although there is widespread concern in the United States about the growing technological capacity of India and China, the nation actually has little reliable information about the future engineering workforce in these countries. U.S. political leaders prescribe remedies such as increasing U.S. engineering graduation rates to match the self-proclaimed rates of emerging competitors. Many leaders attribute the increasing momentum in outsourcing by U.S. companies to shortages of skilled workers and to weaknesses in the nation's education systems, without fully understanding why companies outsource. Many people within and beyond government also do not seem to look ahead and realize that what could be outsourced next is research and design, and the United States stands to lose its ability to "invent" the next big technologies. At the Pratt School of Engineering of Duke University, we have been studying the impact of globalization on the engineering profession. Among our efforts, we have sought to assess the comparative engineering education of the United States and its major new competitors, India and China; identify the sources of current U.S. global advantages; explore the factors driving the U.S. trend towards outsourcing; and learn what the United States can do to keep its economic edge. We believe that the data we have obtained, through not exhaustive represent the best information available and can help U.S. policymakers, business leaders, and educators chart future actions.
70 citations
References
More filters
21 Oct 2001-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the authors present the results of a study commissioned by the Fermilab Director on the feasibility of an intense neutrino source, based on a muon storage ring.
Abstract: We present the results of a study commissioned by the Fermilab Director on the feasibility of an intense neutrino source, based on a muon storage ring. Muon colliders have been discussed as an alternate route to very high-energy lepton colliders. As a by-product, such a collider would produce very intense neutrino beams because of the decaying muons circulating in the storage ring. In a dedicated storage ring, these neutrino beams could be produced in long straight sections which would point towards long, medium or short baseline detectors, opening up a whole new class of neutrino physics experiments because of the enormous neutrino flux that, in principle, could be achieved in such a facility as compared to more standard fixed target sources. Intense pion sources in combination with powerful emittance cooling strategies for the comparatively large muon emittance are necessary to make this type of neutrino source as well as a muon collider, feasible for a possible future high energy physics facility. The Neutrino Factory and Muon Collider collaboration studies the different subsystems being required and presently focuses on the layout of a neutrino source based on a 50 GeV Muon Storage Ring.
186 citations
28 Apr 2015
TL;DR: In this case, a combination of lung hamartomas and neuroendocrine tumor of the duodenum - gastrointestinal stromal tumor gives rise to diagnosis.
Abstract: Carney's triad is a rare non-hereditary condition characterized by gastrointestinal stromatic tumors (GIST, intramural mesenchymal tumors of the gastrointestinal tract with neuronal or neural crest of the cell origin), pulmonary chondromas and extraadrenal paragangliomas. Less than 100 cases have been reported worldwide. Carney's triad primarily affects young women (it means the age of early 20-s). Most patients initially have two of the three tumors (incomplete Carney's triad). The main symptoms at presentation are gastrointestinal bleeding, epigastric pain, anemia and palpable abdominal mass. These symptoms are related to the GIST, which occur in 99% of cases. Pulmonary chondromas (well-differentiated benign cartilaginous tumors) occur in approximately 80% of cases. They are often asymptomatic and may be unilateral (83%) or bilateral (32%). Secreting paragangliomas (typically extraadrenal and most often mediastinal) occur in approximately 50% of patients. The etiology is not completely understood. A case of Carney triad, which caused some difficulty and complexity of the diagnosis at the initial stage of case management. Due to the complex of diagnostic search, errors in the definitive diagnosis of the Triad Carney were found in almost all clinical cases, which are associated with diverse clinical diagnosis and complexities of individual nosology: gamartohondromy lung or gastrointestinal stromal tumor, or extraadrenal paraganglioma, and their combination in one patient in complete or incomplete. Thus, in this case, a combination of lung hamartomas and neuroendocrine tumor of the duodenum - gastrointestinal stromal tumor gives rise to diagnosis.
119 citations
TL;DR: In this article, a unified multiaxial fatigue damage model based on a characteristic plane approach is proposed, integrating both isotropic and anisotropic materials into one framework.
104 citations
TL;DR: A review of recent efforts made by the different interested parties, in both academia and industry, in the development of corrosion fatigue (CF) lifetime prediction procedures can be found in this article.
Abstract: The synergistic combination of mechanical fatigue stresses and environmental agents acting together can be more detrimental than that of the summation of the contributions of each mechanism acting separately. Major attempts to understand the contribution of the different agents (microstructure, chemical composition of environment, temperature, loading conditions, etc.) have been reported in the literature. Nevertheless, current knowledge is insufficient to address life estimation with a sound physical basis from the initiation of localised corrosion (such as pitting) to the estimation of crack propagation. Major simplifications and assumptions have been required in the development of life prediction methodologies. This paper reviews recent efforts made by the different interested parties, in both academia and industry, in the development of corrosion fatigue (CF) lifetime prediction procedures. The paper mainly focuses on the methodologies proposed in the literature for oil and gas, nuclear, energ...
83 citations
Posted Content•
TL;DR: In this paper, the impact of globalization on the engineering profession has been studied, and the authors have sought to assess the comparative engineering education of the United States and its major new competitors, India and China; identify the sources of current U.S. trend towards outsourcing; and learn what the United states can do to keep its economic edge.
Abstract: Although there is widespread concern in the United States about the growing technological capacity of India and China, the nation actually has little reliable information about the future engineering workforce in these countries. U.S. political leaders prescribe remedies such as increasing U.S. engineering graduation rates to match the self-proclaimed rates of emerging competitors. Many leaders attribute the increasing momentum in outsourcing by U.S. companies to shortages of skilled workers and to weaknesses in the nation's education systems, without fully understanding why companies outsource. Many people within and beyond government also do not seem to look ahead and realize that what could be outsourced next is research and design, and the United States stands to lose its ability to "invent" the next big technologies. At the Pratt School of Engineering of Duke University, we have been studying the impact of globalization on the engineering profession. Among our efforts, we have sought to assess the comparative engineering education of the United States and its major new competitors, India and China; identify the sources of current U.S. global advantages; explore the factors driving the U.S. trend towards outsourcing; and learn what the United States can do to keep its economic edge. We believe that the data we have obtained, through not exhaustive represent the best information available and can help U.S. policymakers, business leaders, and educators chart future actions.
70 citations