A case of isolated rupture of the gallbladder following a closed injury to the abdomen is reported. Various anatomical forms of this very rare lesion have been described. The mechanism, diagnosis, ...and treatment of this traumatic lesion are discussed, based on a review of the published literature.
Gastric volvulus and absence of the left lobe of the liver Manigand, G; Thieblot, P; Foulon, D ...
La semaine des hopitaux : organe fonde par l'Association d'enseignement medical des hopitaux de Paris,
1975-Nov-09, Volume:
51, Issue:
44
Journal Article
The Laser Astrometric Test Of Relativity (LATOR) is a joint European-U.S. Michelson-Morley-type experiment designed to test the pure tensor metric nature of gravitation - a fundamental postulate of ...Einstein's theory of general relativity. By using a combination of independent time-series of highly accurate gravitational deflection of light in the immediate proximity to the Sun, along with measurements of the Shapiro time delay on interplanetary scales (to a precision respectively better than 0.1 picoradians and 1 cm), LATOR will significantly improve our knowledge of relativistic gravity. The primary mission objective is to i) measure the key post-Newtonian Eddington parameter \gamma with accuracy of a part in 10^9. (1-\gamma) is a direct measure for presence of a new interaction in gravitational theory, and, in its search, LATOR goes a factor 30,000 beyond the present best result, Cassini's 2003 test. The mission will also provide: ii) first measurement of gravity's non-linear effects on light to ~0.01% accuracy; including both the Eddington \beta parameter and also the spatial metric's 2nd order potential contribution (never measured before); iii) direct measurement of the solar quadrupole moment J2 (currently unavailable) to accuracy of a part in 200 of its expected size; iv) direct measurement of the "frame-dragging" effect on light by the Sun's gravitomagnetic field, to 1% accuracy. LATOR's primary measurement pushes to unprecedented accuracy the search for cosmologically relevant scalar-tensor theories of gravity by looking for a remnant scalar field in today's solar system. We discuss the mission design of this proposed experiment.
The Pioneer 10 and 11 spacecraft yielded the most precise navigation in deep space to date. These spacecraft had exceptional acceleration sensitivity. However, analysis of their radio-metric tracking ...data has consistently indicated that at heliocentric distances of \(\sim 20-70\) astronomical units, the orbit determinations indicated the presence of a small, anomalous, Doppler frequency drift. The drift is a blue-shift, uniformly changing with a rate of \(\sim(5.99 \pm 0.01)\times 10^{-9}\) Hz/s, which can be interpreted as a constant sunward acceleration of each particular spacecraft of \(a_P = (8.74 \pm 1.33)\times 10^{-10} {\rm m/s^2}\). This signal has become known as the Pioneer anomaly. The inability to explain the anomalous behavior of the Pioneers with conventional physics has contributed to growing discussion about its origin. There is now an increasing number of proposals that attempt to explain the anomaly outside conventional physics. This progress emphasizes the need for a new experiment to explore the detected signal. Furthermore, the recent extensive efforts led to the conclusion that only a dedicated experiment could ultimately determine the nature of the found signal. We discuss the Pioneer anomaly and present the next steps towards an understanding of its origin. We specifically focus on the development of a mission to explore the Pioneer Anomaly in a dedicated experiment conducted in deep space.
Rate limiting steps in strain X4 metabolism [Clostridium neopropionicum] Tholozan, J.L; Foulon, L; Albagnac, G. (Institut National de la Recherche Agronomique, Villeneuve d'Ascq (France). Station de Technologie Alimentaire) ...
Mededelingen van de Faculteit Landbouwwetenschappen Rijksuniversiteit Gent (Belgium),
(1992), Volume:
56, Issue:
4b
Journal Article
The improvement in the expectation and quality of life of patients undergoing coronary bypass surgery has been studied in the short term but there are relatively few studies with follow-up periods of ...over five years. The results in 239 patients operated on between 1970 and 1976 are presented. The preoperative data was obtained from a computerised filing system; studies were made at 3 months, at an average of 60 months, and in 78 patients with follow-up exceeding 5 years. Actuarial survival rates were calculated. The operative mortality was 9 patients (3,7%); late mortality was 21 patients (9,2%). Most deaths were due to cardiac causes. The following factors did not appear to be associated with a poor prognosis: sex, the number of cardiovascular risk factors, the number of bypass grafts; however, age and poor left ventricular function as identified by ECG (p less than 0,01), the presence of clinical cardiac failure (p less than 0,001) and by angiography (p less than 0,001) were associated with a poor prognosis. The long-term functional results were interesting: 67% patients followed up to 5 years and 56% patients followed up for over 5 years had no angina. Myocardial infarction occurred in 16,7% of patients at 5 years. Preexisting left ventricular failure which affected the operative and immediate postoperative results was also found secondarily in 9% of patients at 5 years. In the long term, the annual mortality rate seemed to be less in patients with triple vessel disease after myocardial revascularisation. The annual mortality rate of patients with left anterior descending disease alone did not seem to be improved when compared with medically treated patients until after the third year. Once again, the extent of myocardial disease was shown to be the essential prognostic factor whatever the coronary profile of the patient. In this study patients with severe angina or unstable angina who had been treated medically before surgery had the same results as those treated surgically by first intention; this fact is an argument in favour of initial medical management in all forms of angina.
