“
“Poly(o-toluidine) (POT) has been electrodeposited on brass from an aqueous salicylate solution
by using cyclic voltammetry, and its corrosion protection performance has been evaluated by potentiodynamic polarization technique and electrochemical impedance spectroscopy in aqueous 3% NaCl solution. The corrosion potential was about 0.115 V vs. SCE more positive for the POT-coated brass than that of uncoated brass and reduces the corrosion rate of brass almost by a factor of 800. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: CGP 41251 2084-2091, 2010″
“The curing behavior and kinetics of epoxy resin with diaminodiphenylmethane (DDM) as the curing agent was studied by many researchers, however all of them prepared the system at a high-temperature condition (i.e., T >= 80 degrees C). Tariquidar solubility dmso In this study, a mixture of epoxy/DDM was prepared at ambient temperature and its curing characteristics were studied by using differential scanning calorimetry (DSC). The autocatalytic model was used to calculate the kinetic factors in the dynamic experiments. The kinetics of the curing reaction was also evaluated by two different isoconversional models; namely Friedman method and the Advanced isoconversional method
proposed by Vyazovkin to investigate the activation energy behavior during the curing reaction. The activation energy of the curing reaction was found to be in the range of 48 +/- 2 kJ/mol and might be considered to be constant during the curing. In fact, our findings were different from the result reported by other researchers for the system which was prepared at elevated temperature. Therefore, it seems that the preparation temperature of the samples influenced considerably on the curing behavior of epoxy with DDM. Finally, a time-temperature-transformation (TTT) diagram was established to determine the cure process and glass transition properties of the system. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 2092-2099, 2010″
“Study Design. Surgeon completed questionnaire.
Objective.
To determine information provided by spine surgeons to patients, part of a 4-part study determining the CCI-779 datasheet impact of patient expectations on outcome following spinal trauma.
Summary of Background Data. An important goal of treatment is patient satisfaction, which may be influenced by patient expectations. Impact of patient expectations on outcome has been demonstrated in various elective orthopedic populations. It is anticipated that there will be similar, if not greater, impact on outcome in a trauma setting.
Methods. A questionnaire was developed, in a case-based format, to determine the information provided by spine surgeons to their patients. There were 3 questionnaires, each consisting of 5 cases and grouped by cervical spine trauma, thoracolumbar spine trauma, and spinal cord injury. These questionnaires were distributed to members of the Spine Trauma Study Group and our division.