The Association Between Clinical Nurses' Work Environment, Job Stress, and Health Locus of Control and Presenteeism in South Korea.

Background: This study aimed to examine the relationship between the work environment, job stress, and health locus of control and presenteeism among clinical nurses in South Korea.

Methods: A cross-sectional, descriptive correlational study was conducted on clinical nurses (n = 276) from general hospitals in two small cities. Data were collected via a self-administered structured questionnaire from 1 to 14 December 2022.

Development of fin-LEDs for next-generation inorganic displays using face-selective dielectrophoretic assembly.

Micro-light-emitting diodes offer vibrant colors and energy-efficient performance, holding promise for next-generation inorganic displays. However, their widespread adoption requires the development of cost-effective chips and low-defect pixelation processes. Addressing these challenges, nanorod-light-emitting diodes utilize inkjet and dielectrophoretic assembly techniques.

Scalable CIGS Solar Cells Employing a New Device Design of Nontoxic Buffer Layer and Microgrid Electrode.

The efficiency of copper indium gallium selenide (CIGS) solar cells that use transparent conductive oxide (TCO) as the top electrode decreases significantly as the device area increases owing to the poor electrical properties of TCO. Therefore, high-efficiency, large-area CIGS solar cells require the development of a novel top electrode with high transmittance and conductivity. In this study, a microgrid/TCO hybrid electrode is designed to minimize the optical and resistive losses that may occur in the top electrode of a CIGS solar cell.

Guava leaf extract attenuated muscle proteolysis in dexamethasone induced muscle atrophic mice via ubiquitin proteasome system, mTOR-autophagy, and apoptosis pathway.

Muscle atrophy is the waste or loss of muscle mass and is caused by physical inactivity, aging, or diseases such as diabetes, cancer, and heart failure. The number of patients suffering from musculoskeletal disorders is expected to increase in the future. However, intervention for muscle atrophy is limited, so research on treatment for muscle wasting is needed.

Risk Factors for Overweight and Obesity in Later School-Aged Children: Focus on Lifestyle Behaviours and Psychosocial Characteristics.

The study analysed the 12th wave (2019) of data from the Panel Study on Korean Children conducted by the Korea Institute of Child Care and Education. A total of 1174 children were selected as the subjects of the study. The results concerning the identifying factors influencing overweight and obesity in later school-aged children revealed that when compared to boys, girls were 1.

Post-acute COVID-19 syndrome in previously hospitalized patients.

Introduction: With the prolongation of the COVID-19 pandemic, more individuals are experiencing sequelae after COVID-19 infection, also known as post-acute COVID-19 syndrome (PCS). The aims of this study were to describe the prevalence and characteristics of PCS symptoms such as fatigue, anxiety, and depression and to compare these symptoms according to participant characteristics in patients who had been previously hospitalized due to COVID-19.

Design: A descriptive cross-sectional study design was used.

Development and Verification of a 480 nm Blue Light Enhanced/Reduced Human-Centric LED for Light-Induced Melatonin Concentration Control.

With the inherent sleep and wake cycle regulated by natural sunlight, the human body has evolved over millennia to be active during the day and to rest at night. However, maintaining an optimal 24 h cycle has become increasingly problematic in modern society as more people spend the majority of the day indoors. Many research groups have reported that inadequate artificial lighting interferes with melatonin production and disrupts the circadian rhythm.

Porcine epidemic diarrhea virus: an update overview of virus epidemiology, vaccines, and control strategies in South Korea.

Porcine epidemic diarrhea virus (PEDV) has posed significant financial threats to the domestic pig industry over the last three decades in South Korea. PEDV infection will mostly result in endemic persistence in the affected farrow-to-finish (FTF) herds, leading to endemic porcine epidemic diarrhea (PED) followed by year-round recurrent outbreaks. This review aims to encourage collaboration among swine producers, veterinarians, and researchers to offer answers that strengthen our understanding of PEDV in efforts to prevent and control endemic PED and to prepare for the next epidemics or pandemics.

Health-Related Behavior and Psychosocial Characteristics of Adolescent Female Smokers in Korea, Compared with Adolescent Male Smokers.

This study aimed to investigate the relationship between health-related behavior and psychosocial characteristics among adolescent female smokers in South Korea using data from the 17th Korea Youth Risk Behavior Web-based Survey (KYRBWS) conducted in 2021. The analysis participants comprised 2407 adolescent smokers who were currently smoking, out of a sample of 54,835 participants. The characteristics of adolescent female smokers were examined by comparing them with those of adolescent male smokers.

Changes in Physical Activity and Depression among Korean Adolescents Due to COVID-19: Using Data from the 17th (2021) Korea Youth Risk Behavior Survey.

This study aimed to identify changes in the health behavior and mental health of adolescents due to coronavirus disease 2019 (COVID-19) and the characteristics related to changes in physical activity and depression among health behavior changes. Data were extracted from the 17th Korea Youth Risk Behavior Web-based Survey of 54,835 adolescents. We classified the adolescents into three groups according to changes in physical activity and depression: no change, increased, or decreased.

Atom-Scale Chemistry in Chalcopyrite-Based Photovoltaic Materials Visualized by Atom Probe Tomography.

Chalcopyrite-based materials for photovoltaic devices tend to exhibit complex structural imperfections originating from their polycrystalline nature; nevertheless, properly controlled devices are surprisingly irrelevant to them in terms of resulting device performances. The present work uses atom probe tomography to characterize co-evaporated high-quality Cu(In,Ga)Se (CIGS) films on flexible polyimide substrates either with or without doping with Na or doping with Na followed by K via a post-deposition treatment. The intent is to elucidate the unique characteristics of the grain boundaries (GBs) in CIGS, in particular the correlations/anti-correlations between matrix elements and the alkali dopants.

Passivation and Interlayer Effect of Zr(i-PrO) on Green CuGaS/ZnS/Zr(i-PrO)@AlO and Red CuInS/ZnS/Zr(i-PrO)@AlO QD Hybrid Powders.

Broadband emissive I-III-VI quantum dots (QDs) are synthesized as efficient and stable I-III-VI QDs to be used as eco-friendly luminescent materials in various applications. Here, we introduce the additional passivation of zirconium isopropoxide (Zr(i-PrO)) to improve the optical properties and environmental stability of green-emitting CuGaS/ZnS (G-CGS/ZnS) and red-emitting CuInS/ZnS (R-CIS/ZnS) QDs. The photoluminescence quantum yield (PLQY) of both resultant Zr(i-PrO)-coated G-CGS/ZnS and R-CIS/ZnS QDs reaches similar values of ~ 95%.

Structural Comparison of hMDH2 Complexed with Natural Substrates and Cofactors: The Importance of Phosphate Binding for Active Conformation and Catalysis.

Malate dehydrogenase (MDH), which catalyzes a reversible conversion of -malate to oxaloacetate, plays essential roles in common metabolic processes, such as the tricarboxylic acid cycle, the oxaloacetate-malate shuttle, and the glyoxylate cycle. MDH2 has lately been recognized as a promising anticancer target; however, the structural information for the human homologue with natural ligands is very limited. In this study, various complex structures of hMDH2, with its substrates and/or cofactors, were solved by X-ray crystallography, which could offer knowledge about the molecular and enzymatic mechanism of this enzyme and be utilized to design novel inhibitors.

The prevalence of depression and its association with sociodemographic factors in menopausal women in South Korea.

This study examined factors that may be associated with depression among middle-aged women in South Korea using data from the 2018 (7th) wave of the Korean Longitudinal Survey of Women and Families. A sample of 6,399 women aged 35-64 years was included. Multivariate logistic regression was performed to identify factors associated with depressive symptoms, as measured by the CES-D-10 scale (Center for Epidemiological Studies Depression), in pre- and post-menopausal women.

Associations between Children's Health-Related Characteristics, Self-Esteem, and Fathers' Parenting Practices and Media Addiction among Younger School-Aged Korean Children.

This study aimed to investigate the relationship between media addiction levels among early school-aged children and their health status, self-esteem, and their fathers' parenting practices. Therefore, we analyzed the data from a total of 1149 fathers and children from the 10th year (2017) survey of the Panel Study on Korean Children (PSKC), by the Korean Children's Panel Research Institute. Specifically, a multinomial logistic analysis was conducted to identify the factors affecting children's media addiction.

Effects of the Participatory Action Research on Reducing the Risk of Metabolic Syndrome in Adult Women.

This study aimed to evaluate the effects of a participatory action research (PAR) on reducing the metabolic syndrome risk factors among the Koran adult women. The effectiveness of the PAR intervention was examined using a one-group pretest-post-test design. The data were collected from 58 adult women living in a community health center in Ulsan, Korea, between May and November 2016.

Multicomponent superconducting order parameter in UTe.

An unconventional superconducting state was recently discovered in uranium ditelluride (UTe), in which spin-triplet superconductivity emerges from the paramagnetic normal state of a heavy-fermion material. The coexistence of magnetic fluctuations and superconductivity, together with the crystal structure of this material, suggests that a distinctive set of symmetries, magnetic properties, and topology underlie the superconducting state. Here, we report observations of a nonzero polar Kerr effect and of two transitions in the specific heat upon entering the superconducting state, which together suggest that the superconductivity in UTe is characterized by a two-component order parameter that breaks time-reversal symmetry.

Topologically driven linear magnetoresistance in helimagnetic FeP.

The helimagnet FeP is part of a family of binary pnictide materials with the MnP-type structure, which share a nonsymmorphic crystal symmetry that preserves generic band structure characteristics through changes in elemental composition. It shows many similarities, including in its magnetic order, to isostructural CrAs and MnP, two compounds that are driven to superconductivity under applied pressure. Here we present a series of high magnetic field experiments on high-quality single crystals of FeP, showing that the resistance not only increases without saturation by up to several hundred times its zero-field value by 35 T, but that it also exhibits an anomalously linear field dependence over the entire range when the field is aligned precisely along the crystallographic c-axis.

Patients' Dying Process From the Point of View of Family and Hospice Team: A Qualitative Exploration of Family Member and Hospice Team Experiences With Hospice in Korea.

The aims of this study is to analyze the experiences of family members and hospice teams regarding hospice care in Korea where culture and institution for well-dying is in the early stage. The study was conducted through in-depth interviews based on the grounded theory method. The participants were 12 individuals, 5 family members and 7 individuals from the hospice team.

Optimal CdS Buffer Thickness to Form High-Quality CdS/Cu(In,Ga)Se Junctions in Solar Cells without Plasma Damage and Shunt Paths.

CdS has been known to be one of the best junction partners for Cu(In,Ga)Se (CIGS) in CIGS solar cells. However, the use of thick CdS buffer decreases the short-circuit current density of CIGS solar cells. There are two obstacles that limit the use of ultrathin CdS.

Enhancement and reentrance of spin triplet superconductivity in UTe under pressure.

Spin triplet superconductivity in the Kondo lattice UTe appears to be associated with spin fluctuations originating from incipient ferromagnetic order. Here we show clear evidence of twofold enhancement of superconductivity under pressure, which discontinuously transitions to magnetic order, likely of ferromagnetic nature, at higher pressures. The application of a magnetic field tunes the system back across a first-order phase boundary.

Point-node gap structure of the spin-triplet superconductor UTe.

Low-temperature electrical and thermal transport, magnetic penetration depth, and heat capacity measurements were performed on single crystals of the actinide superconductor UTe to determine the structure of the superconducting energy gap. Heat transport measurements performed with currents directed along both crystallographic and axes reveal a vanishingly small residual fermionic component of the thermal conductivity. The magnetic field dependence of the residual term follows a rapid, quasilinear increase consistent with the presence of nodal quasiparticles, rising toward the -axis upper critical field where the Wiedemann-Franz law is recovered.