We have studied the effect of temperature on aging dynamics of laponite suspensions by carrying out the rheological oscillatory and creep experiments. We observed that at higher temperatures the mechanism responsible for aging became faster thereby shifting the evolution of elastic modulus to lower ages. Significantly, in the creep experiments, all the aging time and the temperature dependent strain data superposed to form a master curve. Possibility of such superposition suggests that the rheological behavior depends on the temperature and the aging time only through the relaxation processes and both the variables do not affect the distribution but only the average value of relaxation times. In addition, this procedure allows us to predict long time rheological behavior by carrying out short time tests at high temperatures and small ages. arXiv:0907.0911

Aim To understand the mobility experiences, supportive mobility device (SMD) use, and desired participation outcomes of individuals with cerebral palsy (CP) across the life span, and describe how perspectives of rehabilitation care and professional resources may influence mobility decision‐making processes and outcomes. Method In the second phase of an overarching study, focus groups were conducted with 164 participants (68 individuals with CP; 32 females, 36 males; mean age 17y 8mo, SD 11y 11mo, range 3–68y), 74 caregivers (50 females, 24 males), and 22 healthcare providers (14 females, eight males) across four US cities. Sessions were audio‐recorded, transcribed, and analysed using constant comparison. Results Six themes emerged. Five presented across all stakeholder groups: (1) the system is broken; (2) equipment is simultaneously liberating and restricting; (3) adaptation across the life span; (4) designed for transport, not for living; and (5) sharing our stories and sharing resources. One theme (theme 6) was specific to healthcare providers: caught in the middle. Interpretation This qualitative study underscores the simultaneous value and frustration associated with SMDs as described by the community with CP, and recognition among all stakeholders of the need to improve connections and resource networks within the community with CP to improve SMD design and provision processes across device types and across the life span for individuals with CP. What this paper adds Supportive mobility devices (SMDs) were most often equated with freedom, participation, and independence. Frustration with SMDs across the life span persisted with regard to design, function, cost, and maintenance. Stakeholders in the community with cerebral palsy are seeking greater networking and resource sharing to enhance SMD provision processes. Access to appropriate SMDs across the life span and the need for system improvement are critical.

SYNOPSISAn ultrathin joint in a poly(methy1 methacrylate) (PMMA) beam was introduced by joining the two pieces using 1,2-dichloroethane. The viscoelastic property of the interfacial region was varied using dioctylphthalate (DOP) plasticizer and flexural waves in the beam were generated by impacting the beam with a small steel ball as well as with a calibrated experimental impact hammer. The acceleration vs. time data of a given point on a beam were used to optimally separate the wave emanating from the joint and were shown to correlate with the mechanical strength of the joint. 0 1996 John Wiley & Sons, Inc.

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Aim: The overarching aim of this research was to 1) Understand the mobility experiences, supported mobility device (SMD) use, and desired participation outcomes of people with cerebral palsy (CP) across the lifespan; and 2) Describe how perspectives of rehabilitation care and professional resources may influence mobility decision-making processes and outcomes. The aim of this study was to understand the lived experience of SMD provision and use with a focus group guide co-developed by stakeholders. Methods: Focus groups were conducted with 164 participants (people with CP, caregivers, and healthcare providers) across four US cities. Sessions were audio-recorded, transcribed, and analyzed using constant comparison. Results: Six themes emerged. Five presented across all stakeholder groups: 1) The System is Broken; 2) Equipment is Simultaneously Liberating and Restricting; 3) Adaptation Across the Lifespan; 4) Designed for Transport, not for Living; and 5) Sharing Our Stories and Sharing Resources. One theme was specific to healthcare provider groups: Caught in the Middle. Interpretation: This qualitative study underscores the simultaneous value and frustration associated with SMD, and the need to improve connections and resource networks within the CP community to improve SMD design and provision processes across device types and across the lifespan for people with CP.