Effect of Variations of Amine Content and Network Branching on Thermomechanical Properties of Epoxy Systems.

In thermosetting epoxies, thermomechanical properties can be enhanced by conscious selection of curing agents. Full cross-linking leads to a maximum in the glass- transition temperature. However, the relation between the glass transition temperature and the epoxy matrix depends on several factors beyond the cross-linking degree, such as the molecular weight of the polymers, network organization, amount of branching, and the presence of hydrogen bonds.

Coefficients in Taylor's law increase with the time scale of water clarity measurements in a global suite of lakes.

Identifying the scaling rules describing ecological patterns across time and space is a central challenge in ecology. Taylor's law of fluctuation scaling, which states that the variance of a population's size or density is proportional to a positive power of the mean size or density, has been widely observed in population dynamics and characterizes variability in multiple scientific domains. However, it is unclear if this phenomenon accurately describes ecological patterns across many orders of magnitude in time, and therefore links otherwise disparate observations.

A Qualitative Study of Barriers and Facilitators to the Uptake of Cardiac Rehabilitation in Octogenarians.

Despite an established evidence-base for cardiac rehabilitation (CR) improving functional outcomes and quality of life and reducing re-hospitalisation, there is limited research on CR for older cardiac patients, who require rehabilitation the most, as they are often very deconditioned due to aortic stenosis (AS). CR uptake in the UK is limited to 52% with national variability of provision and accessibility, and it is a national priority to increase uptake to 85%. Frequently, research has excluded older populations as they are deemed to be too frail or generally not suitable for inclusion.

Interpositional Bioresorbable Scaffold-Anchor Appears Non-inferior to a Standard Anchor in the Treatment of Rotator Cuff Tears.

Background: Failure after rotator cuff repair is typically due to a loss of integrity of the bone-tendon interface. The BioWick anchor (Zimmer-Biomet) is an interpositional scaffold-anchor that was developed to improve tendon-bone healing. The purpose of this study was to determine the clinical efficacy of this novel anchor compared with a standard anchor with respect to retear rates and patient outcomes.

Natural and Semisynthetic Immunomodulatory Luakuliide Labdane Diterpenoids.

Spectroscopy-guided isolation of extracts of the Tongan marine sponge cf. (Lamarck, 1814) has resulted in the reisolation of the labdane diterpenoid luakuliide A () and one new congener, luakulialactam A (). In addition to establishing the absolute configuration of , synthetic modifications to the luakuliide framework at key positions has created a set of six derivatives (-) which were used to interrogate a structure-activity relationship relating to the immunomodulatory effects of luakuliide A.