A closed fracture was performed on the left tibia of 3-month-old Wistar rats weighing 250 to 350 g that were either healthy (N = 24) or made diabetic with alloxan (N = 24) to investigate the effect of alloxan-induced diabetes on the course of bone fracture healing. Histomorphometric analysis of the fracture site was performed at 7, 14, 25, and 35 days. After 7 days, diabetic rats had significantly less cartilag...
57Fe Mössbauer spectroscopy and X-ray diffraction were used to study the structural changes induced by ball milling a coarse-grained Fe48.1V51.9 at% sigma phase in a vibratory mill in argon with a frequent gas renewal. The sigma phase transforms into a bcc alpha phase till 140 h of milling. Mössbauer spectroscopy also shows the presence of an amorphous phase. Further, X-ray diffraction and Mössbauer spectroscop...
O algodão é uma das mais importantes culturas em nível mundial, e hospedeiro de um grande número de pragas, como Spodoptera frugiperda e Anthonomus grandis. Uma alternativa para o controle desses insetos é a construção de cultivares de algodão transgênicos, contendo gene(s) de resistência a esses insetos. Bacillus thuringiensis é uma bactéria que produz toxinas entomopatogênicas que são amplamente usadas como a...
2003
2003
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