Poliomyelitis surveillance report number 18, May 20, 1955

Dr. Edwin Lennette, Virus Laboratory, California Department of Public Health, reports isolation of type 1 virus from the stool of case PSU No. Cal-21. He also reports isolation of type 1 virus from the stool of a third \uc2\ub0th contact of non-paralytic case PSU No. Cal-14. Isolations from 2 other contacts of this case were previously reported.Dr. Werner Henle, Children\ue2\u20ac\u2122s Hospital, Philadelphia, reports isolation of type 1 poliomyelitis virus from Case PSU No. Pa-2. This is the first isolation from a case receiving Wyeth Vaccine. This case had first paralysis at the same site as inoculation.One new case was accepted today from West Virginia. This seven-year-old female developed bulbar signs 26 days after inoculation with Lilly Vaccine. Vaccinated cases total 79 at 12:00 noon 5-20-55 (Table l)

Real Estate valuation and forecasting in non-homogeneous markets: A case study in Greece during the financial crisis

In this paper we develop an automatic valuation model for property valuation using a large database of historical prices from Greece. The Greek property market is an inefficient, nonhomogeneous market, still at its infancy and governed by lack of information. As a result modelling the Greek real estate market is a very interesting and challenging problem. The available data cover a wide range of properties across time and include the financial crisis period in Greece which led to tremendous changes in the dynamics of the real estate market. We formulate and compare linear and non-linear models based on regression, hedonic equations and artificial neural networks. The forecasting ability of each method is evaluated out-of-sample. Special care is given on measuring the success of the forecasts but also on identifying the property characteristics that lead to large forecasting errors. Finally, by examining the strengths and the performance of each method we apply a combined forecasting rule to improve forecasting accuracy. Our results indicate that the proposed methodology constitutes an accurate tool for property valuation in a non-homogeneous, newly developed market

Strukturelle Charakterisierung von Hochtemperatursupraleitern Schlussbericht

The studies reported were intended to yield information on the relationships between synthesis, structure and properties of high-Tc superconductors. The synthesis and structure of the 124-phase in the system YBaCu and those of the 2223-phase in the Bi-system were given most attention. It was possible to ascertain a reproducible way of synthetizing a pure product, and a product where Y is replaced by 0.1 mole of Ca. The reaction mechanism was characterized by X-ray diffraction analysis. As regards the 2223-phase in the Bi-system, results show a connection between an annealing process in O_2 and the crystallographic parameters and superconductivity. (orig./MM)Die durchgefuehrten Arbeiten sollten Beitraege zur Kenntnis des Zusammenhanges zwischen Synthese, Struktur und Gefuege und Eigenschaften on HTSL erbringen. Im Mittelpunkt der Untersuchungen standen Fragen der Synthese und Struktur der 124-Phase im System YBaCu und der 2223-Phase im Bi-System. Fuer die 124-Phase gelang es, einen reproduzierbaren Weg zur Synthese eines reinen und eines mit 0,1 Mol Ca fuer Y substituierten Produktes aufzufinden sowie den Reaktionsablauf durch roentgenographische Untersuchungen zu charakterisieren. Fuer die 2223-Phase im Bi-System wurden erste Hinweise erhalten zum Einfluss einer im O_2-Strom durchgefuehrten Temperung auf die supraleitenden Eigenschaften und die kristallographischen Parameter. (orig./MM)Available from TIB Hannover: FR 6732+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Strukturelle Charakterisierung von Hochtemperatursupraleitern Schlussbericht

The studies reported were intended to yield information on the relationships between synthesis, structure and properties of high-Tc superconductors. The synthesis and structure of the 124-phase in the system YBaCu and those of the 2223-phase in the Bi-system were given most attention. It was possible to ascertain a reproducible way of synthetizing a pure product, and a product where Y is replaced by 0.1 mole of Ca. The reaction mechanism was characterized by X-ray diffraction analysis. As regards the 2223-phase in the Bi-system, results show a connection between an annealing process in O_2 and the crystallographic parameters and superconductivity. (orig./MM)Die durchgefuehrten Arbeiten sollten Beitraege zur Kenntnis des Zusammenhanges zwischen Synthese, Struktur und Gefuege und Eigenschaften on HTSL erbringen. Im Mittelpunkt der Untersuchungen standen Fragen der Synthese und Struktur der 124-Phase im System YBaCu und der 2223-Phase im Bi-System. Fuer die 124-Phase gelang es, einen reproduzierbaren Weg zur Synthese eines reinen und eines mit 0,1 Mol Ca fuer Y substituierten Produktes aufzufinden sowie den Reaktionsablauf durch roentgenographische Untersuchungen zu charakterisieren. Fuer die 2223-Phase im Bi-System wurden erste Hinweise erhalten zum Einfluss einer im O_2-Strom durchgefuehrten Temperung auf die supraleitenden Eigenschaften und die kristallographischen Parameter. (orig./MM)Available from TIB Hannover: FR 6732+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Patient-Centered Research: Does Postmenopausal Estrogen Replacement Therapy Reduce Lens Opacities?

BACKGROUND: Postmenopausal estrogen use affects many organ systems. It's impact on the development of cataracts is unclear. PURPOSE: To examine whether postmenopausal estrogen replacement therapy is associated with the occurrence of lens opacities, a precursor to cataract formation. METHODS: 553 women, aged 66 to 93 years, participated in the Framingham Eye Study (1986 to 1989) and had menopausal and lifetime estrogen use data available from Framingham Study biennial exams conducted from 1948 to 1990. Lens opacities were determined by two certified examiners who evaluated lens status by means of dilated pupils and the use of a standardized grading system. The presence or absence of a lens opacity and the anatomical location of the lens opacity (nuclear, cortical, posterior-subcapsular) were recorded. Multivariate logisitic regression adjusting for potential confounders including age, body mass index, hypertension, diabetes, smoking was used to evaluate the association between estrogen use and lens opacity. RESULTS: In multivariate analysis, use of postmenopausal estrogens for ≥10 years was inversely associated with the presence of all types of lens opacities (OR 0.5, 95% CI 0.2, 1.0). Women who had used estrogen for ≥10 years had a 60% reduction in risk of nuclear lens opacities compared with non-users (OR 0.4, 95% CI 0.2, 0.9). An association of borderline statistical significance was seen for longer duration estrogen use and fewer posterior subcapsular opacities (OR 0.3, 95% CI 0.1–1.0), and no association between estrogen therapy and cortical opacities was observed. Age of menopause, comparing early (age 23–44) and late (greater than age 54 years) to normal (age 45 to 53 years) was not associated with any type of lens opacities nor was type of menopause (natural compared to surgical). CONCLUSION: Our study suggests that long term estrogen use was associated with a reduction in overall, nuclear and posterior-subcapsular lens opacities; thereby suggesting that estrogen may be protective in cataract formation