Including our series, the most common primary tumours were prostate cancer (26.4%), thyroid carcinoma (11.7%) and hepatocarcinoma (11.7%).

Though exceedingly rare, metastases involving the clivus

should be considered in the differential diagnosis with clivus chordoma. The metastatic lesion might be a late and single expression of the primary tumour. The trans-sphenoidal approach is the ideal procedure to establish a histopathological diagnosis. Prognosis is poor.”
“Polarization sensitivity is documented in a range of marine animals. The variety of tasks for which animals can use this sensitivity, and buy Bucladesine the range over which they do so, are confined by the visual systems of these animals and by the propagation of the polarization information in the aquatic environment. We examine the environmental physical constraints in an attempt to reveal the depth, range and other limitations to the use of polarization sensitivity by marine animals. In clear oceanic waters, navigation that is based on the polarization pattern of the sky appears to be limited to shallow waters, while solar-based navigation is possible Go 6983 supplier down to 200-400 m. When combined with intensity difference, polarization sensitivity allows

an increase in target detection range by 70-80% with an upper limit of 15 m for large-eyed animals. This distance will be significantly smaller for small animals, such as plankton, and in turbid waters. Polarization-contrast detection, which is relevant to object detection and communication, is strongly affected by water conditions and in clear waters its range limit may reach 15 m as well. We show that polarization sensitivity may also serve for target distance estimation, when examining point

source bioluminescent objects in the photic mesopelagic depth range.”
“The influence of aluminum hypophosphide (AlHPi) and nanosilica on the flame-retardant and mechanical property of ethylenepropylenediene monomer (EPDM) rubber was evaluated by limiting oxygen index, and the value of tensile LOXO-101 strength and elongation at break. The results show that the introduction of nanosilica into the EPDM/AlHPi blends can not only further improve the flame-retardant property but also improve the tensile strength and elongation at break significantly, showing a synergistic effect between AlHPi and nanosilica. The flame-retardant mechanism was further studied by X-ray diffraction (XRD), thermogravimetric (TG) analysis, differential scanning calorimetry (DSC), and scanning electron microscope (SEM). The results of XRD and TGDSC indicate that AlHPi will melt along with oxidation at about 337 degrees C, which is helpful to full contact with nanosilica and to enhance the interaction between them; and will further recrystallize above 540 degrees C, which is benefited to enhance the mechanical strength of char layer.