Ultrasensitive Detection of Dimethylamine Gas for Early Diagnosis of Parkinson's Disease Using CeO-Coated TiCT MXene/Carbon Nanofibers.

Parkinson's disease is a prevalent neurological disorder, with dimethylamine (DMA) recognized as a crucial breath biomarker, particularly at the parts per billion (ppb) level. Detecting DMA gas at this level, especially at room temperature and high humidity, remains a formidable challenge. This study presents an ultrasensitive chemiresistor DMA gas sensor, leveraging the CeO-coated TiCT MXene/carbon nanofiber (CeO/MXene/C NFs) heterostructure to enhance dimethylamine sensing.

Advancements in defect engineering of two-dimensional nanomaterial-based membranes for enhanced gas separation.

The advent of two-dimensional nanomaterials, a revolutionary class of materials, is marked by their atomic-scale thickness, superior aspect ratios, robust mechanical attributes, and exceptional chemical stability. These materials, producible on a large scale, are emerging as the forefront candidates in the domain of membrane-based gas separation. The concept of defect engineering in 2D nanomaterials has introduced a novel approach in their application for membrane separation, offering an effective technique to augment the performance of these membranes.

[Analysis and Modeling of Risk Factors for Children with Intestinal Acute Graft-Versus-Host Disease after Allogeneic Hematopoietic Stem Cell Transplantation].

Objective: To analyze factors associated with intestinal acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation(allo-HSCT) in children and to develop a prediction model for intestinal aGVHD after allo-HSCT in children.

Methods: The clinical data of 62 children who underwent allo-HSCT at the Department of Hematology of the People's Hospital of Xinjiang Uygur Autonomous Region from February 2018 to September 2021 were retrospectively analyzed. Intestinal aGVHD was evaluated according to the Mount Sinai Acute GVHD International Consortium (MAGIC) grading criteria, the variables were screened by LASSO (least absolute shrinkage and selection operator) regression analysis with 10-fold cross-validation, and developed a model for predicting intestinal aGVHD after allo-HSCT in children.

Disseminated visceral Kaposi's sarcoma after allogeneic hematopoietic stem cell transplantation: a case report.

Cases of disseminated visceral Kaposi's sarcoma (KS) after allogenic hematopoietic stem cell transplantation (HSCT) are very rare worldwide, and disseminated visceral KS is often rapidly progressive and life-threatening, especially in paediatric patients. Here, the case of a 6-year-old female patient with disseminated visceral KS after allogeneic HSCT for treating severe aplastic anaemia is presented. The authors encountered difficulties in making the diagnosis due to lack of experience, but the diagnosis was achieved relatively quickly and accurately using metagenomic next-generation sequencing.

Tunable and Efficient Photoluminescence of Lanthanide-Doped CsNaScCl Double Perovskite Single Crystals toward Multifunctional Light-Emitting Diode Applications.

Lead-free halide double perovskite, as one of the promising candidates for lead halide perovskite materials, shows great potential in light-emitting diodes (LEDs), benefiting from its environmental friendliness and high chemical stability. However, the poor regulation of the emission spectra severely limits its application range. Herein, various lanthanide ions were successfully doped in CsNaScCl double perovskite single crystals (DPSCs) to yield effective and stable emissions spanning from visible to near-infrared (NIR) regions.

Trajectories of Job Burnout among Bus Drivers in China: A Three-Year Follow-Up Study.

This study aimed to characterize job burnout in longitudinal trajectories among bus drivers and examine the impact of variables related to job burnout for trajectories. A longitudinal study was conducted in 12,793 bus drivers in Guangdong province, China, at 3-year follow-up assessments. Growth mixture modeling (GMM) was used to estimate latent classes of burnout trajectories and multinomial logistic regression models were applied to predict membership in the trajectory classes.

Efficient and tunable photoluminescence for terbium-doped rare-earth-based CsNaYCl double perovskite.

Lead-free double perovskite materials with efficient and stable self-trapped exciton (STE) emissions show enormous potential for next-generation solid-state lighting. However, the low-emission efficiency and difficulty of spectral regulation are two major obstacles to their application. Here, all-inorganic rare-earth-based double perovskite CsNaYCl single crystals with strong blue emissions were reported as effective hosts to accommodate lanthanide ion doping.

Double perovskite microcrystals-based white light-emitting diodes without reabsorption of multiphase phosphors.

Here, ions are incorporated into : double perovskite microcrystals via a re-crystallization method. ions doping not only makes the white light spectrum adjustable, but also maintains the high photoluminescence quantum yield (PLQY). The optimal value of PLQY is 95%.

Stable and Efficient Upconversion Single Red Emission from CsPbI Perovskite Quantum Dots Triggered by Upconversion Nanoparticles.

Here, composites including highly efficient inert shell-modified NaYF:Yb/Tm@NaYF upconversion nanoparticles (UCNPs) and CsPbI perovskite quantum dots (PQDs) have been successfully synthesized by the assistance of (3-aminopropyl)triethoxysilane (APTES) as a precursor for a SiO matrix. UCNPs and CsPbI PQDs in this composite structure show excellent stability in ambient conditions. Importantly, the efficient UC emission of CsPbI PQDs was realized, which means that the single red emission of inert shell-modified UCNPs can be easily obtained by depending on these composite structures.

The Psychological Impact of the COVID-19 Epidemic on Guangdong College Students: The Difference Between Seeking and Not Seeking Psychological Help.

Background: Coronavirus disease 2019 (COVID-19) has considerably psychologically impacted Chinese college students. Several types of online mental health services were widely implemented for college students during the outbreak. This study investigated the relationship between college students' mental health status and psychological help-seeking behavior to test the phases-decision-making model (PDM).

COVID-19 in Guangdong: Immediate Perceptions and Psychological Impact on 304,167 College Students.

The outbreak of COVID-19 has brought unprecedented psychological pressure to people across China and more widely across the entire globe. The aim of this study was to assess the immediate perceptions of COVID-19 among college students in Guangdong Province, China, and to assess the psychological impact of the outbreak. We conducted a cross-sectional survey of college students via online questionnaires between February 13th and February 22nd, 2020.

Mental health status and change in living rhythms among college students in China during the COVID-19 pandemic: A large-scale survey.

• 7.7% of college students showed depressive symptoms during the COVID-19 pandemic. • College students with depressive symptoms had low regulatory emotional self-efficacy.

Correlations between working memory impairment and neurometabolites of prefrontal cortex and lenticular nucleus in patients with major depressive disorder.

Background: The mechanism of working memory (WM) impairment in MDD remains unclear. We aimed to find out the mechanism by using neuropsychological tests and proton magnetic resonance spectroscopy (1H-MRS).

Methods: 31 MDD patients and 31 healthy controls were recruited in our study.