16 research outputs found
Stacked Cu1.8S nanoplatelets as counter electrode for quantum dot-sensitized solar cell
It is found that the electrocatalytic activity of Cu2-xS thin films used in quantum dot-sensitized solar cells (QDSSCs) as counter electrode (CE) for the reduction of polysulfide electrolyte depends on the surface active sulfide and disulfide species and the deficiency of Cu. The preferential bonding between Cu2+ and S2-, leading to the selective formation of a Cu1.8S stacked platelet-like morphology, is determined by the cetyl trimethyl ammonium bromide surfactant and deposition temperature; the crab-like Cu-S coordination bond formed dictates the surface area to volume ratio of the Cu1.8S thin films and their electrocatalytic activity. The Cu deficiency enhances the conductivity of the Cu1.8S thin films, which exhibit near-infrared localized surface plasmon resonance due to free carriers, and UV-vis absorption spectra show an excitonic effect due to the quantum size effect. When these Cu1.8S thin films were employed as CEs in QDSSCs, a robust photoconversion efficiency of 5.2% was obtained for the film deposited at 60 °C by a single-step chemical bath deposition method
Sensitivity of Satellite-Derived Wind Retrieval Over Cloudy Scenes to Target Selection in Tracking and Pixel Selection in Height Assignment
Study on PV Panel Cooling System using IoT with ESS for Preventing Reduced Efficiency of Solar Panel
Anti-Leukemic Activation of Immune Cells in a Leukemic-Induced Microenvironment By CXCR4 Inhibition
Template-Free Uniform-Sized Hollow Hydrogel Capsules with Controlled Shell Permeation and Optical Responsiveness
This study has established a robust and straightforward
method
for the fabrication of uniform polyÂ(vinylamine) hydrogel capsules
without using templates that combines the dispersion polymerization
and the sequential hydrolysis/cross-linking. The particle sizes are
determined by the degree of cross-linking as well as by the cross-linking
reaction time, while the shell thickness is independent of these variables.
Diffusion-limited reactions occur at the periphery of the particles,
leading to the formation of hydrogel shells with a constant thickness.
The treatment of the surfaces of hollow hydrogel capsules with oppositely
charged biopolymers limits the permeability through the shell of species
even with low molecular weights less than 400 g/mol. Furthermore,
we demonstrated that the hydrogel shell phase decorated with Au nanoparticles
can be optically ruptured by exposure to laser pulse, a feature that
has potential uses in optically responsive drug delivery
Comparison of clinical manifestations in mpox patients living with HIV versus without HIV: a systematic review and meta-analysis
Currently, many cases of mpox patients living with the human immunodeficiency virus (HIV) have been reported. Immunocompromised mpox patients, including those living with HIV are noted for an increased risk for severe symptoms; however, existing studies did not focus on the statistical comparison of mpox outcomes associated with HIV. Thus, we conducted a systematic review and meta-analysis to evaluate and compare the clinical manifestations of mpox in people living with HIV (PLWH) and people without HIV. In this systematic review and meta-analysis, PubMed/MEDLINE, Embase, and Google Scholar were searched up to March 7, 2023. A random effects model was used to calculate the pooled prevalence along with the 95% confidence intervals (CI), and the odds ratio and its corresponding 95% CIs were calculated to elucidate the significance of each clinical feature for mpox patients with and without HIV. In this study, we included 99 published papers with 2413 patients with mpox (median age, 35.5 years; PLWH n = 1151) from 27 countries across six continents. The odds ratio of the mpox outcomes with PLWH in comparison to patients without HIV was found to be significant for skin rash (1.24, 95% CI: 1.01–1.53), proctitis (2.03, 95% CI: 1.36–3.04), cough (0.57, 95% CI: 0.33–0.98), and diarrhea (3.85, 95% CI: 1.24–11.98). The odds ratio of mpox patients with HIV for historical infections of syphilis was 2.14 (95% CI: 1.38–3.32), compared with those without HIV. This is the first international and comprehensive study that performed a systematic review and meta-analysis to statistically measure mpox manifestations according to HIV status. As clinical features related to mucosal contact were characteristically pronounced in PLWH, our systematic review provides insight that the primary invasion site of infection strongly relates to the outcomes of mpox