Aortic valve replacement with stentless porcine bioprostheses

Abstractpublished_or_final_versio

Solution structure of the dimerization domain of the eurkaryotic stalk P1/P2 complex reveals the structural organization of the eukaryotic stalk

Poster Presentation: abstract A01The lateral ribosomal stalk is responsible for the kingdom‐specific binding of translation factors and activation of GTP hydrolysis during protein synthesis. The eukaryotic stalk consists of the scaffold P0 protein which binds two copies of P1/P2 hetero‐dimers to form a P0(P1/P2)2 pentameric P‐complex. The structure of the eukaryotic stalk is currently not known. To provide a better understanding on the structural organization of eukaryotic stalk, we have determined the solution structure of the N‐terminal dimerization domain …postprin

Predissociation of oxygen in the B 3Σ-u state

The predissociation linewidths and level shifts of vibrational levels of three oxygen isotopic molecules 16O 2, 16O 18O, and 18O 2 arising from the interactions of the B 3Σ u -~ state with the four repulsive states 5Π u, 3Σ u +, 3Π u, and 1Π u, have been calculated. A set of parameters characterizing these interactions has been determined. Good agreement between calculated and experimental predissociation widths and shifts has been obtained for all the three isotopic molecules. © 1992 American Institute of Physics.published_or_final_versio

Efficacy And Safety Of Hylan G-F 20 Injection In Treatment Of Knee Osteoarthritis In Chinese Patients: Results Of A Prospective, Multicentre, Longitudinal Study

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Risk-stratified seroprevalence of SARS coronavirus in children residing in a district with point-source outbreak compared to a low-risk area.

1. SARS coronavirus has low transmissibility at the community level. 2. Subclinical SARS coronavirus infection is rare in children.published_or_final_versio

Implementing guidelines for the prescribing of vancomycin and teicoplanin

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Short-Term Prognosis of Transient Ischemic Attack and Predictive Value of the ABCD2 Score in Hong Kong Chinese

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Predissociation linewidths of the (3,0)-(11,0) Schumann-Runge absorption bands of 18O2 and 16O 18O in the wavelength region 180-196 nm

Predissociation linewidths of the (3,0)-(11,0) Scbumman-Runge bands of 18O 2 and 16O 18O in the wavelength region 180-196 nm have been obtained from the published measurements of the absolute absorption cross sections of Yoshino et al. [Planet. Space Sci. 36, 1201 ( 1988); 37, 419 (1989)] and spectroscopic constants of these molecules of Cheung et al. [J. Mol. Spectrosc. 131, 96 ( 1988); 134, 362 (1989)]. The linewidths are determined as parameters in the nonlinear least-squares fitting of calculated to measured cross sections. Predissociation maxima are found at upper vibrational levels with v′ = 4 ,7, and 10 for 18O 2 and for 16O 18O. Our predissociation linewidths are mostly greater than previous experimental values for both isotopic molecules. © 1990 American Institute of Physics.published_or_final_versio

Predissociation linewidths of the (1,0)-(12,0) Schumann-Runge absorption bands of O2 in the wavelength region 179-202 nm

A nonlinear least-squares method of retrieving predissociation linewidths from the experimental absolute absorption cross sections of Yoshino et al. [Planet. Space Sci. 31, 339 (1983)] has been applied to the (1,0)-(12,0) Schumann-Runge bands of oxygen. Predissociation linewidths deduced for the Schumann-Runge bands are larger than the theoretical predictions of Julienne [J. Mol. Spectrosc. 63, 60 (1976)] and the latest measurements of Lewis et al. [J. Quant. Spectrosc. Radiat Transfer 36, 187 (1986)]. The larger linewidths found will have an impact on calculations of solar flux penetration into the Earth's atmosphere and of the photodissociation rates of trace species in the upper atmosphere. Systematic variation of predissociation linewidths with rotational quantum number is observed in the bands (v′,0) with v′ = 6, 8, 9, 11, and 12. © 1990 American Institute of Physics.published_or_final_versio

Disease-Free Survival after Hepatic Resection in Hepatocellular Carcinoma Patients: A Prediction Approach Using Artificial Neural Network

Background: A database for hepatocellular carcinoma (HCC) patients who had received hepatic resection was used to develop prediction models for 1-, 3- and 5-year disease-free survival based on a set of clinical parameters for this patient group. Methods: The three prediction models included an artificial neural network (ANN) model, a logistic regression (LR) model, and a decision tree (DT) model. Data for 427, 354 and 297 HCC patients with histories of 1-, 3- and 5-year disease-free survival after hepatic resection, respectively, were extracted from the HCC patient database. From each of the three groups, 80 % of the cases (342, 283 and 238 cases of 1-, 3- and 5-year disease-free survival, respectively) were selected to provide training data for the prediction models. The remaining 20 % of cases in each group (85, 71 and 59 cases in the three respective groups) were assigned to validation groups for performance comparisons of the three models. Area under receiver operating characteristics curve (AUROC) was used as the performance index for evaluating the three models. Conclusions: The ANN model outperformed the LR and DT models in terms of prediction accuracy. This study demonstrated the feasibility of using ANNs in medical decision support systems for predicting disease-free survival based on clinical databases in HCC patients who have received hepatic resection