Size-dependent competitive effect between surface recombination and self-heat on efficiency droop for 250 nm AlGaN-based DUV LEDs.

In this work, electrical and optical performances for 250 nm AlGaN-based flip-chip deep ultraviolet light emitting diodes (DUV LEDs) with different chip sizes are studied. Reduced chip size helps increase the light extraction efficiency (LEE) with the cost of increased surface nonradiative recombination. Nevertheless, a thin p-AlGaN layer of 10 nm can manage current distribution while suppressing surface recombination and reducing light absorption simultaneously, which results in the increased optical power density.

Synergy between Fenton reagent and solid waste-based solidifying agents during the solidification/stabilization of lead(II) and arsenic(III) contaminated soils.

Due to the different physicochemical properties of lead (Pb) and arsenic (As), coupled remediation processes of contaminated soils containing Pb and As have always been a technical challenge. In the present study, a novel solidifying agent (BER) was synthesized using alkaline oxygen furnace slag (BOFS), modified electrolytic manganese residue (EMR) and red mud (RM). The solidifying agent was synergistically used with Fenton reagent for solidifying/stabilizing Pb- and As-contaminated soils.

Enhanced light extraction efficiency for the inclined-sidewall-shaped AlGaN-based DUV LED by using an omni-directional reflector with a thin hybrid dielectric layer.

In this Letter, an omni-directional reflector (ODR) with a thin hybrid dielectric layer (hybrid-ODR) is proposed to enhance the light extraction efficiency (LEE) for inclined-sidewall-shaped AlGaN-based deep ultraviolet light-emitting diode (DUV LED) by inserting a thin diamond with high refraction index into a conventional Al/AlO-based ODR. The three-dimensional finite-difference time-domain (3D FDTD) simulation results show that the LEE of TM-polarized light for the DUV LED with hybrid-ODR is enhanced by 18.5% compared with Al/AlO-based ODR.

The Recent Applications of Magnetic Nanoparticles in Biomedical Fields.

Magnetic nanoparticles (MNPs) have found extensive application in the biomedical domain due to their enhanced biocompatibility, minimal toxicity, and strong magnetic responsiveness. MNPs exhibit great potential as nanomaterials in various biomedical applications, including disease detection and cancer therapy. Typically, MNPs consist of a magnetic core surrounded by surface modification coatings, such as inorganic materials, organic molecules, and polymers, forming a nucleoshell structure that mitigates nanoparticle agglomeration and enhances targeting capabilities.

Fascin-1 Promotes Cell Metastasis through Epithelial-Mesenchymal Transition in Canine Mammary Tumor Cell Lines.

Canine mammary tumors (CMTs) are the most common type of tumor in female dogs. In this study, we obtained a metastatic key protein, Fascin-1, by comparing the proteomics data of in situ tumor and metastatic cell lines from the same individual. However, the role of Fascin-1 in the CMT cell line is still unclear.

A Comprehensive Review of Solar Photocatalysis & Photothermal Catalysis for Hydrogen Production from Biomass: from Material Characteristics to Engineering Application.

Biomass photoreforming is a promising way of producing sustainable hydrogen thanks to the abundant sources of biomass feedstocks. Solar energy provides the heat and driven force to initial biomass oxidation coupled with H evolution. Currently, biomass photoreforming is still far from plant-scale applications due to the lower solar energy utilization efficiencies, the low H yield, and the lack of appropriate photoreactors.

New insights into the pH-dependent removal of sulfamethoxazole in peracetic acid activation systems: From mechanistic exploration to practical application potentials.

Peracetic acid (PAA) as emerging oxidant in advanced oxidation processes (AOPs) has attracted widespread attention in purifying water pollution. In this research, the removal of target contaminant (sulfamethoxazole, SMX) was investigated through PAA activation by a facile catalyst (Co@C), and the active sites of catalyst were identified as sp-C, O, and Co by correlation analysis. Especially, different pH adjustment strategies were designed, including System A (adjusting pH after adding PAA) and System B (adjusting pH before adding PAA), to investigate the impact of oxidant acidity and alkalinity on solution microenvironment as well as effect and mechanism of pollutant removal.

Serum stromal cell-derived factor-1 concentrations are increased and associated with nonalcoholic fatty liver disease in children with obesity.

Introduction: Stromal cell-derived factor-1 (SDF-1) is a newly discovered small molecule adipocytokine, and research has shown that it is closely related to the occurrence and development of obesity. However, there are currently few research reports on SDF-1 in childhood obesity and nonalcoholic fatty liver disease (NAFLD), and this study aims to explore the relationship between SDF-1 and obesity related indicators in obese children.

Methods: Serum SDF-1 concentrations were measured using enzyme-linked immunosorbent assay (ELISA).

In vitro digestion and fecal fermentation of basidiospore-derived exopolysaccharides from Naematelia aurantialba.

Mushroom polysaccharides exhibit numerous health-enhancing attributes that are intricately linked to the breakdown, assimilation, and exploitation of polysaccharides within the organism. Naematelia aurantialba polysaccharides (NAPS-A), highly prized polysaccharides derived from mushrooms, remain shrouded in uncertainty regarding their characteristics pertaining to gastrointestinal digestion and gut microbial fermentation. The study aimed to understand the digestion and fecal fermentation patterns of NAPS-A.

Beneficial Effects of D1 Soy Milk Supplementation on Serum Biochemical Indexes and Intestinal Health of Bearded Chickens.

This study investigated the effects of dietary supplementation with D1 ( D1) on growth performance, serum anti-inflammatory cytokines, and intestinal microbiota composition and diversity in bearded chickens. To investigate the effects of and fermented soy milk, 7-day-old broilers were orally fed different doses of D1 fermented soy milk for 35 days, with the unfermented soy milk group as the Placebo group. This study found that D1 fermented soy milk improved the intestinal microbiota of broilers, significantly increasing the abundance of beneficial bacteria and decreasing the abundance of harmful bacteria in the gut.

Terahertz Time-Domain Spectroscopic Study of Tricalcium Silicate.

In this study, the terahertz (THz) spectra of CS were obtained in the 0.4-2.3 THz frequency range using different sample preparation methods.

Elucidating the Mechanism of Simultaneous Activation of CH and CO Mediated by Single Group 10 Metal Anions in Gas Phase.

Quantum chemistry calculations predict that besides the reported single metal anion Pt , Ni can also mediate the co-conversion of CO and CH to form [CH -M(CO )-H] complex, followed by transformation to C-C coupling product [H CCOO-M-H] (A), hydrogenation products [H C-M-OCOH] (B) and [H C-M-COOH] . For Pd , a fourth product channel leading to PdCO …CH becomes more competitive. For Ni , the feed order must be CO first, as the weaker donor-acceptor interaction between Ni and CH increases the C-H activation barrier, which is reduced by [Ni-CO ] .

Insight into boron-doped biochar as efficient metal-free catalyst for peroxymonosulfate activation: Important role of -O-B-O- moieties.

In recent years, metal-free catalysts for persulfate-mediated oxidation processes have been widely applied to remove contaminants in the aquatic environment. Herein, a simple pyrolysis approach was used to synthesize the boron doped biochars (B@TBCs) derived from boric acid mixed with tea seed shells powders. The obtained B@TBCs exhibited fantastic capability to boost PMS (0.

Deep learning-based classification of the anterior chamber angle in glaucoma gonioscopy.

In the proposed network, the features were first extracted from the gonioscopically obtained anterior segment photographs using the densely-connected high-resolution network. Then the useful information is further strengthened using the hybrid attention module to improve the classification accuracy. Between October 30, 2020, and January 30, 2021, a total of 146 participants underwent glaucoma screening.

PPM EMAT for Defect Detection in 90-Degree Pipe Bend.

Aircraft pipelines are mainly used for the storage and transportation of fuel, hydraulic oil and water, which are mostly bent pipes of non-ferromagnetic materials. We used PPM (Periodic Permanent Magnet) EMAT (Electromagnetic Acoustic Transducer) to detect the defects at 90-degree bends. A simulation model was established by finite element software to study the propagation characteristics and defect detection capability of T (0, 1) mode-guided wave in aluminum pipe bend.

Image quality and lesion detectability in low-dose pediatric F-FDG scans using total-body PET/CT.

Purpose: To investigate the effects of dose reduction on image quality and lesion detectability of oncological F-FDG total-body PET/CT in pediatric oncological patients and explore the minimum threshold of administered tracer activity.

Methods: A total of 33 pediatric patients (weight 8.5-58.

Mesenchymal Stem Cells Coated by the Extracellular Matrix Promote Wound Healing in Diabetic Rats.

Objective: To investigate the effects of mesenchymal stem cells (MSCs) coated by the extracellular matrix (ECM) on wound healing in diabetic rats.

Methods: Mesenchymal stem cells were cocultured with ECM. Cell viabilities were evaluated using MTT assay.

[The coverage of work injury insurance and its affecting factors in Zhejiang province, China].

Objective: In China, the coverage rate of work injury insurance was 23.2%in 2011, which was far lower than expected. The factors affecting the insurance's enrollment has very little known.

[Study on optimal model of hypothetical work injury insurance scheme].

Objective: To explore an optimal model of hypothetical work injury insurance scheme, which is in line with the wishes of workers, based on the problems in the implementation of work injury insurance in China and to provide useful information for relevant policy makers.

Methods: Multistage cluster sampling was used to select subjects: first, 9 small, medium, and large enterprises were selected from three cities (counties) in Zhejiang Province, China according to the economic development, transportation, and cooperation; then, 31 workshops were randomly selected from the 9 enterprises. Face-to-face interviews were conducted by trained interviewers using a pre-designed questionnaire among all workers in the 31 workshops.