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attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...
This study was designed to investigate the frequency and diagnostic importance of the pleuropulmonary manifestations of the postcardiac injury syndrome. A retrospective study of 35 patients (2 to 76 years old) with clearly defined postcardiac injury syndrome is presented. Twenty-one cases followed cardiac surgery, and 14 appeared after myocardial infarction. The onset of the syndrome was an ave...
From 1977 through 1980, 251 veterans from the San Francisco Bay Area received permanent lower-extremity prostheses at the two local Veterans Administration hospitals. For a survey, 213 of the 251 were contacted and 179 of them (84%) responded to written or telephone questionnaires concerning their prosthetic problems and complaints and their recommendations regarding prosthetic care. Seventy-fo...
In order to establish the natural evolution of unstable angina under medical treatment and to determine the possible benefits of revascularization surgery, 113 patients were studied; 51 received medical treatment (24 with intermediate syndrome and 27 with progressive angina), and 62 others received surgical treatment (28 with intermediate syndrome and 34 with progressive angina). After a mean f...
a University of Bern, Department of Clinical Psychology and Psychotherapy, Fabrikstrasse 8, 3014 Bern, Switzerland b University of Zurich, Institute of Biomedical Ethics and History of Medicine, Pestalozzistrasse 24, 8032 Zurich, Switzerland c University of Kassel, Department of Psychology, Holländische Str. 36-38, 34127 Kassel, Germany d Bern University Hospital, Division of Psychosomatic Medi...
From 1995 to 1998, more than 90 percent of mid-range IPOs were charged underwriter fees, or spreads, of exactly seven percent, even though evidence suggests that economies of scale in the size of the offering should allow for lower fees. Chen and Ritter (2000) offer collusion as a possible explanation based on empirical analysis and observation. Alternatively, we investigate whether the spreads...
• The Employee Benefit Research Institute (EBRI) and the Investment Company Institute (ICI) have collaborated to develop the EBRI/ICI 401(k) Accumulation Projection Model. This model examines how 401(k) assets might contribute to retirement income for future retirees based on decisions workers make throughout their careers and finds that the median replacement rate from 401(k) accumulations dep...
This article assesses the participation and the financial performance of licensed health maintenance organization (HMOs) in the Medicaid market. The study found that participation by Medicaid Dominant plans has more than doubled from 11 percent in 1992 to 23 percent in 1998 while Medicaid membership in Commercial Dominant plans declined from 71 percent in 1994 to 51 percent in 1998. Both partic...
New estimates from the Commonwealth Fund Biennial Health Insurance Survey, 2014, indicate that 23 percent of 19-to-64-year-old adults who were insured all year--or 31 million people--had such high out-of-pocket costs or deductibles relative to their incomes that they were underinsured. These estimates are statistically unchanged from 2010 and 2012, but nearly double those found in 2003 when the...
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