A newly designed Pb(II) potentiometric sensor based on intrinsically conducting nanoparticles of solid poly(aniline-co-2-hydroxy-5-sulfonic aniline) possessing many ligating functional groups like −NH–, −N=, −OH, −SO3H, −NH2 as ionophores in plasticizer-free vinyl resin membranes has been fabricated. linear Nernstian response is obtained within a wide activity range from 1.0 × 10–3 to 10–10 M with detection limit low 2.2 10–11 M. The pH independent plateau ranges between 3.5 and 7.0. After...

Abstract The highest Hg‐ion adsorbance so far , namely up to 2063 mg g −1 has been achieved by poly(aniline‐ co ‐5‐sulfo‐2‐anisidine) nanosorbents. Sorption of Hg ions occurs mainly redox and chelation mechanisms (see scheme), but also ion exchange physisorption. magnified image Poly(aniline (AN)‐ ‐5‐sulfo‐2‐anisidine (SA)) nanoparticles were synthesized chemical oxidative copolymerization AN SA monomers, their extremely strong adsorption mercury in aqueous solution was demonstrated....

Abstract Poly[aniline(AN)‐co‐5‐sulfo‐2‐anisidine(SA)] nanograins with rough and porous structure demonstrate ultrastrong adsorption highly efficient recovery of silver ions. The effects five key factors—AN/SA ratio, Ag I concentration, sorption time, ultrasonic treatment, coexisting ions—on adsorbability were optimized, AN/SA (50/50) copolymer found to exhibit much stronger than polyaniline all other reported sorbents. maximal capacity up 2034 mg g −1 (18.86 mmol ) is the highest thus far...

We evaluated the impact of COVID-19 pandemic on anti-VEGF treatment in ophthalmology patients a single hospital northern China. A total 93 injections were administered to 85 eyes 72 at The China Medical University First Hospital Department Ophthalmology during pandemic. Compared same period 2019, number decreased by 70%. Fifty-nine 46 receiving 3+PRN prior outbreak pandemic; all these experienced interruptions due COVID-19-associated reasons. Anatomic and functional outcomes suggest that...

Ischemic stroke (IS), chronic obstructive pulmonary disease (COPD) and diabetes mellitus (DM) account for a large burden of premature deaths. However, few studies have investigated the associations between fine particular matter (PM2.5) components mortality IS, COPD DM. We aimed to examine these in Beijing, China. Data on daily mortality, air pollutants meteorological factors from 2008 2011 Beijing were collected. Daily concentrations five PM2.5 components, namely, sulfate ion (SO42−),...

Abstract Background Melasma can be associated with immense psychosocial stress, which impact quality of life. One theory suggests that ultraviolet light increase plasmin activity in keratinocytes, has led to the investigation tranexamic acid for treating melasma, since it possesses anti‐plasmin properties. The use laser‐assisted drug delivery also uptake topical medications. Aims A prospective pilot study was performed assess utility combination treatment low‐energy, low‐density 1927 nm...

Background and Objectives To evaluate the efficacy safety of fractional 1064 nm Nd:YAG picosecond laser combined with intense pulsed light (IPL) in treatment atrophic acne scar post‐inflammatory erythema (PIE). © 2021 Wiley Periodicals LLC. Study Design/Materials Methods Seventeen patients received five sessions at weeks 0, 4, 8, 12, 16 were followed up week 28. One half face was randomly treated by IPL (FxPico + IPL), other alone as a control. Results For 15 who completed study, FxPico side...

Abstract Objective A 730 nm picosecond‐domain laser was developed to improve the clearance of pigmented lesion and reduce adverse events. This study assessed safety efficacy this system for lentigines explores how short picosecond pulses interact with tissue via histology. Study Design Methods Twenty subjects Fitzpatrick skin types II–IV were enrolled in prospective, IRB‐approved study. Four treatments administered using a laser. Pre‐ posttreatment photos by blinded reviewers at 4‐ 12‐week...

Purpose: Injectable biologics (IB) are important in dermatology and we sought to examine the distribution of US IB-prescribing dermatologists.Materials methods: We used Centers for Medicare Medicaid Services Provider Utilization Payment Data: Part D 2013–2015. The density dermatologists who prescribe IB (etanercept, adalimumab, ustekinumab, secukinumab) each county, represented as number per 100,000 beneficiaries, was calculated.Results: 2,992 (26.3% dermatologists) prescribed this study....

Melasma may be related to aberrant blood vessels, but there has been no report on the utility of dynamic optical coherence tomography (D-OCT) in studying vessel characteristics melasma. We studied cutaneous vessels melasma and effects oral tranexamic acid (TXA) with D-OCT.Six patients moderate severe had a D-OCT scanning areas face affected by not it. Three them scans within 3 months after starting TXA at follow-up visit. Blood flow different depths skin diameter were compared between normal...

Rationale: Azithromycin-induced liver injury has been rarely reported in adult individuals, let alone a pregnant woman. Here, we describe the clinical features and outcomes of azithromycin-induced Patient concerns: A 30-year-old woman presented with generalized pruritus elevated serum bile acid level (123.6 μmol/L) on day 4 azithromycin administration. diagnosis intrahepatic cholestasis pregnancy was made, cesarean section performed immediately. Interestingly, alanine aminotransferase (ALT)...

Topical adjuncts have been investigated to improve clinical outcomes associated with laser resurfacing for photodamage and cutaneous aging. One such product is a tripeptide/hexapeptide serum, which has shown increase dermal collagen elastin as well postprocedural recovery following treatments.A randomized, blinded, split-face, comparative trial was performed assess the utility of serum peri-procedural adjunct nonablative fractional resurfacing.A total 20 subjects were enrolled. Each hemiface...

Q-switched (QS) and picosecond lasers can effectively safely remove unwanted tattoo pigments. Cosmetic mucosal tattoos are rare there only a handful of cases successful laser removal, all with QS 1064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser.A 19-year-old Fitzpatrick skin-type II female presented for treatment 6-month-old, black on the surface her lower lip. She underwent six sessions 694-nm ruby months 0, 1, 3, 5, 7, 12. A 30-year-old IV male 10-year-old his left buccal...

Background: To evaluate the anatomic and functional outcomes in eyes of patients with macular edema (ME) caused by central retinal vein occlusion (CRVO) who were lost to follow-up (LTFU) for more than 6 months following treatment anti-vascular endothelial growth factor (VEGF) therapy determine predictive factors visual prognosis these patients. Methods: This study was conducted as a retrospective, case series investigation. Patients whose receiving intravitreal anti-VEGF CRVO-ME, next visit...

The Ronald O. Perelman Department of Dermatology, New York University School Medicine, York, Laser & Skin Care, A.N.B. Kauvar is a consultant for Lumenis, Syneron Candela, and Sebacia. No relationships relevant to this manuscript. other author has indicated no significant interest with commercial supporters.

This article describes the case of a patient with cutaneous ulcers who was found to have systemic Langerhans cell histiocytosis (LCH). includes clinical, histology, and electron microscopy images, in addition description presentation, workup, management this rare disease patients, review literature.

Port wine stain birthmarks often require multiple treatments with the 595-nm pulsed dye laser. Settings are usually derived from clinical experience or trial and error, requiring until optimal improvement. The classical therapeutic endpoint is purpuric change, which imposes a substantial recovery period on patients.