Efficacy and safety of hemoporfin photodynamic therapy for port-wine stains in paediatric patients: A retrospective study of 439 cases at a single centre.

Background: Although hemoporfin photodynamic therapy is a promising treatment approach for port-wine stains, its efficacy in children has not been sufficiently assessed. We aimed to evaluate the efficacy and safety of this approach in a paediatric population.

Methods: We retrospectively analysed the medical records of 439 children with port-wine stains receiving hemoporfin photodynamic therapy at our institution from July 2017 to January 2020.

A clinical study of HMME-PDT therapy in Chinese pediatric patients with port-wine stain.

Objective: To report our observations from a trial of the effectiveness and safety of hematoporphyrin monomethyl ether photodynamic therapy (HMME-PDT) in treating Chinese Pediatric patients port-wine stains (PWS).

Method: From October 2017 to December 2017, the study recruited 82 patients of PWS with negative HMME skin test results. The patients received an intravenous injection of 5 mg/kg HMME and the affected areas were exposed to 532 nm LED green light, with the irradiation power density between 80-85 mW/cm.

A prospective study of topical carteolol therapy in Chinese infants with superficial infantile hemangioma.

Background/objective: To report our observations from a trial of the short-term effectiveness and safety of topical carteolol hydrochloride drops to treat infantile hemangiomas (IHs).

Methods: From October 2012 to September 2015, the study recruited 349 children with superficial IHs. Participants were randomized to two groups: treatment (n = 224 who received 2% carteolol hydrochloride drops administered to the lesion surface twice daily) and observation (n = 125 who did not receive treatment).

A new method based on fiber-optic sensing for the determination of deacetylation degree of chitosans.

A novel method for determining the degree of deacetylation of chitosan is described. This involves a two-abrupt-change of the refractive index of solutions. Principle of the method is that the sample reacts with excessive acid, and the excessive acid is measured by alkaline titration.

Rapid determination of surfactant critical micelle concentration in aqueous solutions using fiber-optic refractive index sensing.

We describe a simple and rapid method for determining the critical micelle concentration (CMC) of surfactants from fiber-optic measurements of refractive index. The refractive index of an aqueous surfactant solution was monitored as the surfactant concentration was increased using an automated dispensing system. On reaching the surfactant's CMC value, an abrupt change was observed in the rate of increase of the refractive index with increasing concentration.

Trace lead measurement and online removal of matrix interference in geosamples by ion-exchange coupled with flow injection and hydride generation atomic fluorescence spectrometry.

A flow injection method has been developed for the direct determination of free available Pb(II). The method is based on the chemical sorption of Pb(II), from pH7 solutions, on a column packed of chelating resin. The retained complex was afterwards eluted with hydrochloric acid followed by hydride generation with reduction by tetrahydroborate.

In situ measurements of the solubilities of salt-water systems by a fiber sensor.

A novel fiber sensor for measuring solid solubilities of salt-water systems in situ is described. The sensor consists of a diode laser as light source, three couplers, two sensing fiber ends with protective cladding, and two photodetectors. The measurement principle is based on relative Fresnel reflective intensity.

[The influential factors of MOCVD growth of InP in opals].

The key problem of fabricating the 3-D InP inverse opal photonic crystal is to increase the loading of InP in opals. In the present paper, low-pressure metal-organic chemical-vapour deposition (MOCVD) was used to infill the voids within synthetic opals with InP. The morphologies and optical properties of SiO2-InP photonic crystal were characterized by scanning electron microscopy and ultraviolet-visible spectrophotometry (UV-Vis).

Active packing method for blue light-emitting diodes with photosensitive polymerization: formation of self-focusing encapsulates.

A novel light-emitting diode (LED) packaging method, named the active packaging (AP) method, is presented in this paper. In this method, during the LED packaging process, the light emitted from a GaN LED chip itself is employed to package the LED encapsulant, thereby eliminating the need to utilize a mold. Current injection into a bare LED chip, triggers a photosensitive epoxy to polymerize, leading to the formation of mushroom lamp cap on the LED chip.