The results show that the mechanical properties of the pure and reinforced
rPS did not decrease with respect to the virgin PS, and in terms of the impact strength, the rPS was superior to the virgin plastic. click here The mechanical properties were not affected by the commercial compatibilizing agent, but the torque of the blends was significantly lower with the compatibilizer. Differential scanning calorimetry (DSC) and dynamic mechanical analysis were used to study the glass-transition temperature (T(g)) of both the pure virgin PS and pure rPS and the wood flour-PS composites. The T(g) values of the rPS and wood-rPS composites were higher than those of the virgin PS and wood-virgin PS composites. The use of rPS increased the stiffness and flexural modulus of the composites. Thermogravimetric analysis revealed that the thermal stability of rPS and its composites was slightly greater than that of the virgin PS and its composites. These results suggest that postconsumer PS can be used to obtain composite materials with good AR-13324 mouse mechanical and thermal properties. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 443-451, 2011″
“PURPOSE: To evaluate the relationship between World Health Organization (WHO) cataract grade determined with a new device and (1) preoperative visual acuity and (2) the difficulty of specific
steps in cataract surgery.
SETTING: Yamaguchi University Hospital, Yamaguchi, Japan.
METHODS: Patients who had cataract surgery between January 2006 and September 2008 were enrolled in this prospective study. Preoperatively, the Konan Anterior Segment In Camera System 1000 cataract analysis device was
used to evaluate the WHO cataract grade in each eye. The main outcome measures were preoperative visual acuity, the time required small molecule library screening for continuous curvilinear capsulorhexis (CCC) and for irrigation/aspiration (I/A), and the total effective phaco time (EPT).
RESULTS: Sixty-four eyes (53 patients) were evaluated. Preoperative visual acuity decreased significantly as the posterior subcapsular cataract (PSC) grade increased (P<.01). Preoperative logMAR values also differed significantly between cataracts classified as mild (score 1 to 3), moderate (score 4 to 6), and severe (score 7 to 9) on the basis of the total nuclear (NUC) + cortical (COR) + PSC score. The CCC and I/A times increased with increasing COR grade, whereas the total EPT increased with increasing NUC grade.
CONCLUSIONS: Evaluation of lens opacity based on the WHO grading system using the new cataract analysis device indicated which surgical procedures are likely to be problematic. The device may also be useful in training residents in cataract surgery.”
“Study Design. A cross-sectional study of balance control in adolescents with idiopathic scoliosis (AIS).