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Giant Parathyroid Adenomas: Differential Aspects Compared to Atypical Parathyroid Adenomas
McCoy Kristin,Bakkila Baylee,Gibson Courtney 대한내분비외과학회 2022 The Koreran journal of Endocrine Surgery Vol.22 No.3
Primary hyperparathyroidism is a common diagnosis, often caused by a parathyroid adenoma, which can be resolved with surgical excision. However, pre-operative diagnosis of the causative adenoma may be challenging given the overlapping presentations and laboratory findings in typical, giant, and atypical parathyroid adenomas. In this case series, we describe one of the largest giant parathyroid adenomas excised in the United States and compare its presentation to that of an atypical parathyroid adenoma. Using this comparison, we aim elucidate the diagnostic value of various presentation characteristics, such as adenoma size, mass effect, symptom burden, and biochemical derangements.
Laparoscopic Retroperitoneoscopic Removal of an Adrenal Hemangioma: a Case Report
Kristin McCoy,Katherine Howe,Daniel Tershak 대한갑상선-내분비외과학회 2021 The Koreran journal of Endocrine Surgery Vol.21 No.3
Adrenal hemangiomas are a benign tumor of the adrenal gland. These are usually found incidentally on imaging. They are a rare entity of adrenal tumors which have been documenting in the literature in under 100 reports. The diagnosis is routinely made on post-operative histology. We present a case of a 63-year-old male with a right adrenal nodule increasing in size. Computed tomography scan demonstrated a 4.0 cm lesion. He underwent surgical resection due to its enlargement through a retroperitoneoscopic approach. Pathology examination revealed the diagnosis of an adrenal hemangioma. Adrenal hemangioma is a rare entity of benign adrenal tumors but should be considered in your differential diagnosis of adrenal incidentalomas. The treatment of choice is surgical resection for confirmative diagnosis and to rule out a malignant lesion.
A Tale of Two Families: Generational Succession in Filipino and American Family Firms
Alfred W. McCoy 서강대학교 동아연구소 2015 TRaNS(Trans –Regional and –National Studies of Sou Vol.3 No.2
Through comparison oftwo families, Filipino and American, this essay finds that the axiomatic three-generational cycle of rise and decline, articulated famously by Andrew Carnegie, proved predictive for an American family firm but not for its Filipino counterpart. Over the span of a century, both families followed a surprisingly similar move from agriculture to food processing and then publishing. Thereafter, however, divergent state policies shaped different destinies for these two families. In the United States, impersonal enforcement of state security and economic regulation allowed the unchecked rise of finance capital that consolidated some 2000 US breweries, most of them family owned, into two transnational corporate conglomerates. In the Philippines, by contrast, persistent rent seeking by elite families, combined with personalised, partisan state economic enforcement, has allowed the continuing dominance of family-controlled corporations. Through comparison of two societies with close relations for over a century, we can see how state economic regulation can encourage the eclipse ofmajor family firms in one society and the perpetuation of a political-economic oligarchy in another.
M. L. McCoy,R. Moradi,H. M. Lankarani 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.5
Agricultural and construction equipment are commonly implemented with rectangular tubing in their structural frame designs. A typical joining method to fabricate these frames is by welding and the use of ancillary structural plating at the connections. This aids two continuous members to pass through an intersection point of the frame with some degree of connectivity, but the connections are highly unbalanced as the tubing centroids exhibit asymmetry. Due to the practice of welded continuous member frame intersections in current agricultural equipment designs, a conviction may exist that welded continuous member frames are superior in structural strength over that of structural frame intersections implementing welded non-continuous members where the tubing centroids lie within two planes of symmetry, a connection design that would likely fabricating a more fatigue resistant structural frame. Three types of welded continuous tubing frame intersections currently observed in the designs of agricultural equipment were compared to two non-continuous frame intersection designs. Each design was subjected to the same loading condition and then examined for stress levels using the Finite Element Method to predict fatigue life. Results demonstrated that a lighter weight, non-continuous member frame intersection design was two magnitudes superior in fatigue resistance than some current implemented frame designs when using Stress-Life fatigue prediction methods and empirical fatigue strengths for fillet welds. Stress-Life predictions were also made using theoretical fatigue strength calculations for the fatigue strength at the welds for comparison to the empirical derived weld fatigue strength.
Michael L. McCoy,Rasoul Moradi,Hamid M. Lankarani 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.3
This paper examines the effectiveness of analyzing impact events in mechanical systems for design purposes using simple or low ordered finite elements. Traditional impact dynamics analyses of mechanical systems namely stereomechanics, energy method, stress-wave propagation and contact mechanics approaches are limited to very simplified geometries and provide basic analyses in making predictions and understanding the dominant features of the impact in a mechanical system. In engineering practice, impacted systems present a complexity of geometry, stiffness, mass distributions, contact areas and impact angles that are impossible to analyze and design with the traditional impact dynamics methods. In real cases, the effective tool is the finite element (FE) method. The high-end FEA codes though may be not available for typical engineer/designer. This paper provides information on whether impact events of mechanical systems can be successfully modeled using simple or low-order finite elements. FEA models using simple elements are benchmarked against theoretical impact problems and published experimental impact results. As a case study, an FE model using simple plastic beam elements is further tested to predict stresses and deflections in an experimental structural impact.
Benign Recurrent Primary Hyperparathyroidism After Parathyroid Carcinoma
Jeoffrey Syeda Manahil Haider,McCoy Kristin L.,Gibson Courtney E. 대한내분비외과학회 2022 The Koreran journal of Endocrine Surgery Vol.22 No.4
This report describes the rare occurrence of a parathyroid adenoma 15 years after the resection of a right-sided parathyroid carcinoma, with recurrence of clinical manifestations of hyperparathyroidism. We report the case of a 41-year-old female who returned to the clinic with bone pain, memory difficulties and fatigue. After a thorough assessment, a hyperechoic nodule of parathyroid origin was detected and resected. The resected lesion was located inferior to the left thyroid lobe, measuring 1.3×0.7×0.6 cm and weighing 602 mg; histopathology was consistent with a parathyroid adenoma. Recurrent primary hyperparathyroidism due to benign adenoma, after prior surgery for parathyroid carcinoma, is a rare phenomenon. Early recognition, diagnosis and intervention are essential to prevent and/or reduce associated morbidity and mortality.
Luz S. Porter,Brian O. Porter,Virginia McCoy,Vivian Bango-Sanchez,Bonnie Kissel,Marjorie Williams,Sachin Nunnewar 한국간호과학회 2015 Asian Nursing Research Vol.9 No.4
Purpose: This study aimed to determine whether a blended Infant MassageeParenting Enhancement Program (IMPEP) improved maternal psychosocial health outcomes (parenting stress, depressive symptoms, self-esteem, maternal attachment) and maternal-infant interaction among substanceaddicted mothers (SAMs) actively engaged in outpatient rehabilitation. Methods: Designed as a randomized, three-group controlled trial testing two levels of psychoeducational intervention (IMPEP vs. PEP) and a control group (standard care parenting resources), the studywas conducted in two substance abuse centers in southeast Florida on a convenience sample of 138 recovering SAM-infant pairs. IMPEP or PEP classes were held weekly onWeeks 2e5, with data collected at baseline (Week 1),Week 6, andWeek 12 via structured interviews, observation (Observation Checklist onMaternal-Infant Interaction), and self-administered questionnaires (Abidin Parenting Stress Index, Beck Depression Inventory, Rosenberg Self-Esteem Scale, Muller's Maternal Attachment Inventory), analyzed descriptively and inferentially using Kruskall-Wallis analysis of variance and post hoc Wilcoxon rank sum and Mann-Whitney U tests. Results: Both IMPEP and PEP groups had significantly increased Parenting Stress Index scores (decreased parenting stress) and decreased Beck Depression Inventory scores (decreased depressive symptoms) compared to controls at Week 12, whereas there were no clinically meaningful differences among study groups in Rosenberg Self-Esteem Scale, Muller's Maternal Attachment Inventory, or Observation Checklist on Maternal-Infant Interaction scores. Only the IMPEP group showed significant improvements in both psychological and physical (waist-hip ratio) measures of parenting stress over time. Conclusions: The findings suggest that infant massage blended into a structured parenting program has value-added effects in decreasing parenting stress and maternal depressive symptoms, but not on SAM's self-esteem, attachment, or maternal-infant interaction.