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New perspective on the pathophysiology of panic: merging serotonin and opioids in the periaqueductal gray
Graeff, F.G.;
Brazilian Journal of Medical and Biological Research , 2012, DOI: 10.1590/S0100-879X2012007500036
Abstract: panic disorder patients are vulnerable to recurrent panic attacks. two neurochemical hypotheses have been proposed to explain this susceptibility. the first assumes that panic patients have deficient serotonergic inhibition of neurons localized in the dorsal periaqueductal gray matter of the midbrain that organize defensive reactions to cope with proximal threats and of sympathomotor control areas of the rostral ventrolateral medulla that generate most of the neurovegetative symptoms of the panic attack. the second suggests that endogenous opioids buffer normal subjects from the behavioral and physiological manifestations of the panic attack, and their deficit brings about heightened suffocation sensitivity and separation anxiety in panic patients, making them more vulnerable to panic attacks. experimental results obtained in rats performing one-way escape in the elevated t-maze, an animal model of panic, indicate that the inhibitory action of serotonin on defense is connected with activation of endogenous opioids in the periaqueductal gray. this allows reconciliation of the serotonergic and opioidergic hypotheses of panic pathophysiology, the periaqueductal gray being the fulcrum of serotonin-opioid interaction.
RETROPERITONEAL LAPAROSCOPIC TREATMENT OF LARGE URETERAL CALCULI NOT AMENABLE FOR LESS INVASIVE PROCEDURES
F.G. ELANANY
African Journal of Urology , 2001,
Abstract: Objectives To evaluate retroperitoneal laparoscopic ureterolithotomy as an alternative line of treatment for ureteral stones not amenable for other less invasive procedures. Patients and Methods Retroperitoneal laparoscopic ureterolithotomy was tried in 34 patients with impacted upper ureteral stones (27 patients) and middle ureteral stones (7 patients). Mean stone size was 16 mm. Twenty-six patients were males and 8 were females with a mean age of 36 years (range 18 — 54 years). Results The procedure was successful in 29 cases (85.3%), while 5 cases (14.7%) required open surgery. The mean operative time was 55 minutes (range 25 — 90 minutes). No major intraoperative complications were encountered. No blood transfusion was required. Mean hospital stay was 6 days. Postoperative complications in the form of prolonged urinary leakage and high-grade fever occurred in 2 patients (5.9%) and 1 patient (2.9%), respectively. Conclusion Retroperitoneal laparoscopic ureterolithotomy is a good minimally invasive alternative line of treatment for ureteral stones in cases not amenable for ESWL or endoscopy. However, it takes a long learning curve. Moreover, a careful case selection and good working instruments are necessary for success. African Journal of Urology Vol. 7 No. 2 (May 2001): pp 74-78 Traitement Laparoscopique Rétropéritonéal des Grands Calculs Urétéraux Non Soumettables aux Procédures Moins Invasives Objectif Cette étude était focalisée sur l'évaluation de l'urétérolithotomie laparoscopique rétropéritonéale comme attitude alternative de traitement des calculs urétéraux non soumettables aux autres procédures moins invasives. Patients et Méthodes L'urétérolithotomie laparoscopique rétropéritonéale a été pratiquée chez 34 patients avec calculs urétéraux hauts enclavés (27 patients) et calculs de l'urètre moyen (7 patients). La taille moyenne du calcul était de 16 mm. Vingt-six patients étaient des hommes et 8 étaient des femmes avec un age moyen de 36 ans (extrêmes de 18 et 54 ans). Résultats La procédure a été pratiquée avec succès dans 29 cas (85,3%), tandis que 5 patients (14,7%) ont finalement été traités par chirurgie ouverte. La durée moyenne de l'intervention était de 55 minutes (extrêmes de 25 et 90 minutes). Aucune complication majeure peropératoire n'a été observée. Aucune transfusion n'a été requise. La durée moyenne d'hospitalisation était de 6 jours. Les complications post-opératoires sous forme de fuite urinaire prolongée et fièvre élevée sont survenues chez 2 patients (5,9%) et 1 patient (2,9%), respectivement. Conclusion L'urétérolithotomie laparoscopique rétropéritonéale est une bonne attitude alternative peu invasive pour le traitement des calculs urétéraux dans les cas non soumettables à lithobiopsie extracorporelle par ondes de choc ou à l'endoscopie. Cependant, elle prend une longue courbe d'apprentissage. De plus, une bonne sélection de cas et de bons instruments de travail sont nécessaires au succès. African Journal of Urology
Review of Survey activities 2012: Colophon, contents, introduction
Christiansen, F.G.
Geological Survey of Denmark and Greenland Bulletin , 2013,
Abstract:
Review of Survey activities 2011: Colophon, contents, introduction
Christiansen, F.G.
Geological Survey of Denmark and Greenland Bulletin , 2012,
Abstract:
Optimum Growth Determination of Heterobranchus bidorsalis in Earthen Ponds
F.G. Owodeinde
Journal of Biological Sciences , 2012,
Abstract: The growth of the aquaculture industry in Nigeria depends to some extent on the availability of fish seeds. This study was carried out to measure the optimum growth of Heterobranchus bidorsalis and the best time to crop under maximum utilization of feed in semi-intensive pond condition. Optimum growth performances of 330 fingerlings of artificially propagated Heterobranchus bidorsalis were investigated. The fingerlings were stocked in three 0.02 hectares earthen ponds on the 1st of February, 2010. Mean weight at stocking was 8.5±1.5 g. The fish were fed 3% of their body weight two times daily with compounded artificial feed containing 45% crude protein. Temperature, dissolved oxygen, pH and total ammonia-nitrogen were measured in each treatment. Survival rate, specific growth rate and condition factor of fish species were also determined. Survival at harvest (after 26 weeks) was 75.5% and the mean weight of the fish was 850±73.06 g. Standing crop at harvest was 10,580 kg ha-1. There was positive correlation (0.99) between growth of Heterobranchus bidorsalis and the number of weeks of growth study of the fish. Mean condition factor (K) was 1.24. Result demonstrated the potential of Heterobranchus bidorsalis for use in aquaculture. It also indicates that the fish species can be grown to commercial size within 26 weeks from fingerling stage under semi-intensive pond conditions. The best time to harvest the fish for maximum gain in terms of good growth and maximum profit on feed utilization is 26 weeks after hatching.
Keuze en opleiding van naar West-Indie uit te zenden rechterlijke en bestuursambtenaren
Mr. F.G. Schalkwijk
Nieuwe West-Indische Gids , 1927,
Abstract:
De reorganisatie van de rechterlijke macht en van de rechtspleging der kolonie Curacao in de practijk
Mr. F.G. Schalkwijk
Nieuwe West-Indische Gids , 1925,
Abstract:
Een Westindische leergang
Mr. F.G. Schalkwijk
Nieuwe West-Indische Gids , 1929,
Abstract:
Mutiny en hadji-ordonnantie: ervaringen met 19e eeuwse bronnen
F.G.P. Jaquet
Bijdragen tot de Taal-, Land- en Volkenkunde , 1980,
Abstract:
Supramolecular complex formation in cell signaling and disease: an update on a recurrent theme in cell life and death
LISETTE LEYTON,ANDREW F.G QUEST
Biological Research , 2004,
Abstract:
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