In this issue of JOVR, Derakhshan and co-authors 1 describe the results of crosslinking for patients with early keratoconus. Collagen crosslinking is a recently described technique of corneal tissue strengthening using riboflavin as a photosensitizer and ultraviolet A (UVA) radiation to promote the formation of intra-and interfibrillar covalent bonds by photosensitized oxidation. 2 To date, it ...

In this paper, crosslinked polyethylene-polystyrene (XLPE-PS) composites with different degrees of crosslinking were fabricated by using agent contents and their direct current (DC) breakdown performance at 30~90 °C was investigated. Results show that the increase degree crosslinking, crystallinity XLPE-PS decreases gradually, but DC strength demonstrates an increasing trend enhancement also in...

Pulsed electric field (PEF) and/or mild thermal (60 °C) processing distinctly affect the texture degradation of carrot tissues during subsequent cooking. The impact PEF on texture-related pectin properties was studied in terms extractability, degree methylesterification (DM) and Ca 2+ crosslinking cortex vascular tissue. In case tissue, treatments significantly (? = 0.05) reduced extractability...

~emistry of the crosslinking of gelatin is a complex phenomenon. the nature of which is dependent on several factors. The present manuscript represents an attempt to answer some specific basic science issues. Two "stress" conditions are commonly known in connection with gelatin capsules. The first condition is induced by exposure to formaldehyde. The second stress condition is created by exposi...

Transport of vitamin B(12) across the outer membrane of Escherichia coli, like that of iron-siderophore complexes, is an active transport process requiring a specific outer membrane transporter BtuB, the proton motive force, and the trans-periplasmic energy coupling protein TonB. Interaction between TonB and two of the TonB-dependent siderophore transporters has been detected previously by form...

PURPOSE To report a keratoconic eye that developed severe sterile keratitis and corneal scar after collagen crosslinking necessitating corneal transplantation. CASE REPORT A 26-year-old man with progressive keratoconus underwent collagen crosslinking and presented with severe keratitis 72 hours after the procedure. The initial impression was infectious corneal ulcer and a fortified antibiotic...