The 80-400 f/4.5-5.6G is a relatively large and bulky lens for the genre but overall, given its size I did not find it very heavy and found it to be well balanced even on a light D7100 without optional vertical grip. If this lens had the same metal construction as the 300 f/4 or 70-200 f/2.8 it would be even heavier. There is a lot of polycarbonate in the lens similar to the other recent f/4 ra...

As a sensitive and selective analytical technique, gold nanoparticles-based colorimetric sensing was characterized by its simplicity and cost-effectiveness. Specific methods have been extensively developed for different targets in diverse samples. In this study, a label-free method for sensing Co in aqueous solutions was described. The target was achieved by the induced aggregation of thiosulfa...

Macromolecular SymposiaVolume 400, Issue 1 2170026 MastheadFree Access Macromol. Symp. 400 First published: 22 December 2021 https://doi.org/10.1002/masy.202170026AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box below share version article.I have read accept...

The toxicity of preservatives on conjunctival epithelium has been widely described in glaucomatous patients topically treated, suggesting both an indirect effect on the lacrimal film and a direct toxic action on epithelial cells (1). Previous studies indicate that long-term administration of preservative-containing eyedrops can lead to chronic conjunctival inflammation, ocular surface impairmen...

1 Division of Brain Sciences, Department of Medicine, Hammersmith Hospital, Imperial College London, London W12 0NN, UK 2 Reta Lila Weston Institute of Neurological Studies, Department of Molecular Neuroscience, University College London, London WC1N 1PJ, UK 3 Wellcome Department of Imaging Neuroscience, UCL Institute of Neurology, University College London WC1N 3BG, UK 4 Section of Neurology, ...

áeñ = 2.22 in the infiltrated one (reducing the contrast at the same time). After inversion the mean dielectric constant decreases to áeñ = 1.41 and, accordingly, the L pseudogap energy shifts upwards (see Fig. 5). The peak width is a function of both the dielectric contrast and the filling factor of the structure. Bare opals present a contrast eSiO2/eair = 2.1 that shifts to epolymer/eSiO2 = 1...

In bacterial chemotaxis, an assembly of transmembrane receptors, the CheA histidine kinase and the adaptor protein CheW processes environmental stimuli to regulate motility. The structure of a Thermotoga maritima receptor cytoplasmic domain defines CheA interaction regions and metal ion–coordinating charge centers that undergo chemical modification to tune receptor response. Dimeric CheA–CheW, ...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285 4.8 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349 5.9 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405 6.8 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 6.5 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....