Mesure du nombre moyen de neutrons émis par fission induite dans 238U par des neutrons de 14,2 Mev

We measured the value of the ratio ν/ν' between the mean number of neutrons ν emitted by fission of 238U with 14,2 MeV neutrons and the number of neutrons ν' emitted by fission of 235U with thermal neutrons.Nous avons mesuré le rapport ν/ν', du nombre moyen de neutrons ν émis par fission de 238U avec des neutrons de 14,2 MeV, au nombre de neutrons v' émis par fission de 235U avec des neutrons thermiques

Pneumatosis intestinalis after laparoscopic appendectomy: case report and review of the literature

Pneumatosis intestinalis (PI) is the presence of intraluminal gas within the wall of the intestine. As a marker for bowel injury owing to mucosal injury, PI may herald a severe underlying disease process in patients without a significant medical history. In other cases, PI is a benign process, and expectant management is appropriate. Here, we present the first reported case of pneumatosis associated with postoperative abscess after appendectomy and its successful management. Then, we describe the pathophysiology of pneumatosis and review the literature regarding its origin and management

Predictors of sperm recovery after cryopreservation in testicular cancer

Our objective was to identify predictors of improved postthaw semen quality in men with testicular cancer banking sperm for fertility preservation. We reviewed 173 individual semen samples provided by 67 men with testicular germ cell tumor (TGCT) who cryopreserved sperm before gonadotoxic treatment between 1994 and 2010 at our tertiary university medical center. Our main outcomes measures were independent predictors for the greater postthaw total motile count (TMC) in men with TGCT. Men with NSGCT were more likely to be younger (P median fresh TMC each had increased odds of a postthaw TMC greater than median postthaw TMC. Interestingly, age, advanced cancer stage (II or III), rapid freezing protocol, and motility enhancer did not show increased odds of improved postthaw TMC in our models. In conclusion, men with TGCT or poor fresh TMC should consider preserving additional vials (at least 15 vials) before oncologic treatment. Density gradient purification should be routinely used to optimize postthaw TMC in men with TGCT. Larger, randomized studies evaluating cancer stage and various cryopreservation techniques are needed to assist in counseling men with TGCT regarding fertility preservation and optimizing cryosurvival