177,158 research outputs found
Trichobezoar Obstruction after Stapled Jejunal Anastomosis in a Dog
No full textObjective-To describe an unusual long-term complication of circular end-to-end anastomosis (CEEA) stapling in a dog. Study Design-Clinical case report. Animal-An 11-year-old, female neutered, Labrador Retriever. Methods-The dog was referred for clinical signs of bowel obstruction. An enterectomy was performed 2 years before presentation using a CEEA stapling device. Palpation, plain radiographs, and ultrasound of the abdomen confirmed the presence of a mass in the bowel, causing obstruction, and requiring surgical approach. Results-An exploratory celiotomy revealed a 5 cm mass in the jejunum, involving the site of the previous surgery. The mass was removed by enterectomy. Dissection of the mass revealed the presence of many staples at the previous enterectomy site, and a trichobezoar entangled in the exposed parts of the staples. Conclusions-An enterectomy was required to treat an intestinal obstruction caused by a trichobezoar entangled in a CEEA-stapled anastomosis. Clinical Relevance-Development of trichobezoar and subsequent bowel obstruction should be considered an unusual but potential long-term complication of CEEA-stapled anastomosis. (C) Copyright 2009 by The American College of Veterinary Surgeon
Myocardial beta-adrenoceptor Density Early After Infarction Predicts Long Term Incidence of Congestive Heart Failure
No full textAims Adverse left ventricular (LV) remodeling after myocardial infarction (MI) frequently leads to congestive heart failure (CHF). We have previously shown that myocardial β-adrenoceptor density (β-ARD) is reduced soon after acute MI and correlates with LV dilatation in the short term. The aim of the present study was to determine whether myocardial β-ARD measured early after MI was associated with progression to CHF in the long term.Methods and results We prospectively included 61 consecutive patients (mean age, 52±11 years, 10 female) in whom MI was the first manifestation of coronary artery disease. Two to 4 weeks after MI, patients underwent positron emission tomography with S-[11C]CGP 12177 to measure β-ARD and 15O labelled water to measure myocardial blood flow (MBF) and coronary flow reserve (CFR). Patients were followed-up for a median of 12.7 years (interquartile range, 6.5-13.7 years) and incidence of CHF was recorded. Eleven patients (18%) developed CHF during follow-up. They had lower β-ARD compared to those who did not (5.35 vs 6.49 pmol/g, P5.57 pmol/g (57% vs. 9%, P<0.001). In a Cox regression model only whole heart β-ARD (HR 0.29; 95% CI, 0.15-0.58, P<0.001) and β-ARD in remote myocardium (HR 0.32; 95% CI, 0.16-0.61, P=0.001) were significantly associated with the incidence of CHF at follow-up. Conclusion Reduced myocardial β-ARD early after MI is associated with the incidence of CHF on long term follow-up
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Myocardial-adrenoceptor down-regulation early after infarction is associated with long-term incidence of congestive heart failure
No full textAdverse left ventricular (LV) remodelling after myocardial infarction (MI) frequently leads to congestive heart failure (CHF). We have previously shown that myocardial beta-adrenoceptor density (beta-ARD) is reduced soon after acute MI and correlates with LV dilatation in the short term. The aim of the present study was to determine whether myocardial beta-ARD measured early after MI was associated with progression to CHF in the long term
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
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