Lensed quasars: a matter of resolution

in The Messenger (2000), 101

Not Available

Coordinated monitoring of the eccentric O-star binary Iota Orionis: optical spectroscopy and photometry

in Monthly Notices of the Royal Astronomical Society (2000), 317

With the objective of investigating the wind-wind collision phenomenon and supporting contemporaneous X-ray observations, we have organized a large-scale, coordinated optical monitoring campaign of the ... [more ▼]

With the objective of investigating the wind-wind collision phenomenon and supporting contemporaneous X-ray observations, we have organized a large-scale, coordinated optical monitoring campaign of the massive, highly eccentric O9III+B1III binary Iota Orionis. Successfully separating the spectra of the components, we refine the orbital elements and confirm the rapid apsidal motion in the system. We also see strong interaction between the components during periastron passage and detect phase-locked variability in the spectrum of the secondary star. However, we find no unambiguous signs of the bow shock crashing on the surface of the secondary, despite the predictions of hydrodynamic simulations. Combining all available photometric data, we find rapid, phase-locked variations and model them numerically, thus restricting the orbital inclination to 50°<~i<~70°. [less ▲]

Looking for “cognitive markers” of early Alzheimer’s disease

Poster (2000, September 01)

Introduction of 3D information in Urban GIS : a conceptual view

Poster (2000, September)

Arbitrary Lagrangian Eulerian Method for the Simulation of Lubricated Contact between Solids in Metal Forming Processes

in Pietryk, Maciej; Kusiak, Jan; Majta, Janusz (Eds.) et al Metal Forming 2000 (2000, September)

Regrets apres sterilisation tubaire

in Journal de Gynécologie, Obstétrique et Biologie de la Reproduction (2000), 29(5), 485-91

OBJECTIVE: To examine thoroughly the profile and motivations of a group of women who regretted sterilization so much that they were prepared to undergo reversal microsurgery or in vitro fertilization ... [more ▼]

OBJECTIVE: To examine thoroughly the profile and motivations of a group of women who regretted sterilization so much that they were prepared to undergo reversal microsurgery or in vitro fertilization treatment. MATERIAL: and methods. The study followed one hundred women from their first consultation for a period of 3 years in order to analyze the outcome of their initial decision. RESULTS: Analysis of the circumstances at the time of the sterilization indicate 3 main factors which later caused the women to regret the decision Three years after the initial consultation, 69% of the patients have withdrawn from further investigation and /or treatment for different reasons analyzed in this study. 17 of the patients have undergone reversal microsurgery and 14 have attempted one or more in vitro fertilization treatments. Of these 31 patients, 12 (38.7%) have given birth to at least one child. CONCLUSION: These results sufficiently prove that tubal sterilization is worthy of consideration as much by the patient as by the physician as a method of irreversible contraception despite the developments in tubal microsurgery or in medically assisted procreation. [less ▲]

Early Stage Results after Oesophageal Resection for Malignancy - Colon Interposition Vs. Gastric Pull-Up

in European Journal of Cardio - Thoracic Surgery (2000), 18(3), 293-300

OBJECTIVE: The aims of our study were to determine if using the colon as a digestive transplant after oesophagectomy for cancer was associated with increased postoperative complications, and to assess the ... [more ▼]

OBJECTIVE: The aims of our study were to determine if using the colon as a digestive transplant after oesophagectomy for cancer was associated with increased postoperative complications, and to assess the impact of preoperative radiochemotherapy on postoperative hospital outcome. METHODS: From January 1990 to December 1998, 130 patients underwent oesophageal resection for malignancy. There were 103 males and 27 females (age: 61.3+/-11.5 years). Indications were squamous cell carcinoma in 69 patients and adenocarcinoma in 61. Preoperatively 30 patients (eight in stage IIB, 18 in stage III, and four in stage IV) received radiochemotherapy. There were 84 subtotal oesophagectomies, with anastomosis in the neck in 44 patients and at the thoracic inlet in 40, and 46 distal oesophageal resections. Digestive continuity was restored with the stomach in 92 patients (age: 63.4+/-10.2 years) and the colon in 38 (age: 52.3+/-12.8 years). With the exception of age (P<0.0001), there was no significant preoperative difference between gastric and colonic groups. RESULTS: Hospital mortality was 8.5% (11 patients), decreasing from 18.5% (before 1993) to 3.8% (since 1993). One patient (2.5%) died in the colonic graft group and ten (11%) in the gastric pull-up group (P=0.17). Postoperative complications occurred in 40 patients (31%), respectively, in ten (26%) and 30 (33%) patients after colonic and gastric transplants (P=0.48), and were pulmonary insufficiency or infection in 29 patients, anastomotic fistula in six, myocardial infarction in five, recurrent nerve palsy in four, renal insufficiency in three, and cerebrovascular accident in one. All fistulas occurred in the gastric pull-up group. The incidence of postoperative pulmonary complications was 70% (21/30 patients) in the subgroup who received preoperative radiochemotherapy, as compared to 11% (5/44 patients) in the subgroup of comparable staging, but without preoperative treatment (P<0.001). CONCLUSIONS: Colonic grafts are not associated with increased postoperative mortality or complications. Our results suggest that preoperative neoadjuvant treatment significantly increases postoperative pulmonary complications. [less ▲]

Least Cost and Scantling Optimization at the initial Design Stage of Ships

in ICETECH 2000 (2000, September)

7-Substituted 3-isopropylamino-4H-1,2,4-benzothiadiazine 1,1-dioxides as potent KATP channel openers: synthesis and bioloigical in vitro evaluation

Poster (2000, September)

A potent diazoxide analogue activating ATP-sensitive K+ channels and inhibiting insulin release

Poster (2000, September)