The Cavezzo meteorite was recovered on January 4, 2020, just three days after the fall observed over Northern Italy by the all-sky cameras of the Italian PRISMA fireball network. Two specimens, weighing 3.1 g (F1) and 52.
View Article and Find Full Text PDFWe report on the detection in southern Egypt of an impact crater 45 meters in diameter with a pristine rayed structure. Such pristine structures are typically observed on atmosphereless rocky or icy planetary bodies in the solar system. This feature and the association with an iron meteorite impactor and shock metamorphism provides a unique picture of small-scale hypervelocity impacts on Earth's crust.
View Article and Find Full Text PDFIntroduction: The corpora cavernosa are cylindrical vessels containing fluid under pressure. Thus, if cavernous wall resistance decreases, the radius increases and internal pressure decreases (LaPlace's law). We reasoned that if we decrease the corpus cavernosum radius, by excising a strip from each tunica albuginea, intracavernous pressure would increase during erection.
View Article and Find Full Text PDFNephrolithiasis has a multifactorial origin, and several disorders may coexist in the same patient. We made a basic and a specific laboratory evaluation. The complete metabolic evaluation consisted of a serum chemistry panel: blood sugar level, complete hemogram, serum electrolytes, GOT, GPT, calcium, phosphate, uric acid, and creatinine levels and RIA dosage of PTH, vitamin D3, cAMP, FT4, FT3 and TSH.
View Article and Find Full Text PDFAndrogen deprivation therapy still remains the gold standard in the treatment of advanced prostate cancer. Unfortunately, patients with metastatic prostate cancer treated with androgen deprivation therapy frequently develop androgen-independent prostate cancer. Cytotoxic chemotherapy has not been used routinely and the current standard regimens have not demonstrated any significant alteration in the development of hormone-refractory disease.
View Article and Find Full Text PDFProstate cancer is detected today at earlier stages and in younger men than ever before. A lot of men are asymptomatic and also physically and sexually active at diagnosis, and most of them are being treated by curative procedures. These trends have led to increasing numbers of patients undergoing disease management for longer periods of time.
View Article and Find Full Text PDFThe proportion of prostate cancer diagnosed at localized stages increased from 56.7% to 74. 0% between 1973 and 1993 ("stage migration").
View Article and Find Full Text PDF