(C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 1670-1681, 2009″
“To develop more “H”-shape nonlinear optical polymers, in this paper, four new polymers embedded with “H”-type chromophore moieties were designed and synthesized through a Suzuki coupling copolymerization reaction. The “H”-type chromophores were easily prepared
by the utilization of “Click Chemistry” reactions, and their structures could be conveniently adjusted by changing the diazido groups. All the polymers exhibited good film-forming ability, thermal stability, and large optical nonlinearities. As a typical example, P4 demonstrated the highest d(33) value of 94.7 pm/V, and its onset temperature for decay was up to 103 degrees C, making it promising candidate for practical applications in photonic fields. (C) 2011 Elsevier Ltd. All rights reserved.”
“It click here has long been known that amyloid beta protein (A beta) plays a key role in Alzheimer’s Disease (AD) and in Down Syndrome cognitive decline. Recent findings have shown that soluble forms of A beta (mostly A beta oligomers; A beta o), rather than insoluble forms (fibrils and plaques), are associated with memory impairments in early stages of AD. Since synaptic plasticity and oscillatory
network activity are required for memory formation, Wnt inhibitor consolidation and retrieval, numerous attempts have been made to establish whether or not A beta o-induced alterations in synaptic plasticity learn more and oscillatory network activity cause memory impairment. Despite a wealth of uncorrelated experimental evidence, such a relationship remains elusive. Furthermore, the specific cellular mechanisms underlying these disruptions remain to be determined. This review will discuss
recent findings about the cellular and network mechanisms involved in A beta o-induced alterations of network oscillations and synaptic plasticity that could be responsible for the learning and memory impairments observed in early AD. Additionally, we will review some of the signal transduction pathways involved in these deleterious effects, which are revealing promising therapeutic targets to ease A beta o-induced brain dysfunction and treat AD.”
“We investigated whether the Discovery total elbow arthroplasty (TEA) system had good results and survival in rheumatoid arthritis (RA) patients. In a prospective cohort study, one elbow surgeon performed TEA on 25 consecutive RA patients (31 elbows) between December 2004 and November 2012 using the Discovery system. We evaluated the preoperative elbow range of motion (ROM), functional outcome with QuickDash and quality of life with EQ-5D. An independent colleague evaluated the same parameters 1-8 years (mean 4.5) postoperatively. The medical records of the follow-up visits for the study period were available for review. A complete set of results was available for 19 patients (25 elbows).