Factors Affecting Nursing Students' Perception of Workplace Bullying.

Workplace bullying is a critical and prevalent issue that causes serious problems in healthcare settings. However, there is little research on the factors affecting nursing students' perception of workplace bullying despite their forthcoming transition into the nursing profession. Therefore, this study aimed to identify the factors related to nursing students' perception of workplace bullying in Korea.

Association between handgrip strength and physical activity: A nationwide population-based study in Korea.

Background: This study investigated the association between handgrip strength (HGS) and physical activity (PA) at different levels in Korean adults for the purpose of providing direction for increasing HGS, which represents muscular strength, and increasing understanding of PA and HGS.

Methods: This study targeted adults aged ≥30 years from the Korean National Health and Nutrition Examination Survey (2014-2019), including 31,888 participants for analysis. HGS was defined as the maximum value of the three measurements of the dominant hand.

Potential Exosome Biomarkers for Parkinson's Disease Diagnosis: A Systematic Review and Meta-Analysis.

Parkinson's disease (PD) is the second most common neurodegenerative disease worldwide. Given its prevalence, reliable biomarkers for early diagnosis are required. Exosomal proteins within extracellular nanovesicles are promising candidates for diagnostic, screening, prognostic, and disease monitoring purposes in neurological diseases such as PD.

Effects of individual and environmental factors on COVID-19 infection control practices in small to medium-sized hospitals.

Background: This study analyzed the influence of individual and environmental factors on infection control practices among nurses in small to medium-sized hospitals of South Korea during the pandemic.

Methods: We enrolled 171 nurses from 5 infectious disease-specialized hospitals with 200 to 299 beds located in metropolitan areas of South Korea. Individual factors, including general characteristics, coronavirus disease 2019 (COVID-19) knowledge, attitude, and risk perception, and environmental factors including COVID-19 safety climate, were collected using self-report questionnaires.

Familial chylomicronemia syndrome: case reports of siblings with deletions of the GPIHBP1 gene.

Background: Familial chylomicronemia syndrome (FCS) is a rare monogenic form of severe hypertriglyceridemia, caused by mutations in genes involved in triglyceride metabolism. Herein, we report the case of a Korean family with familial chylomicronemia syndrome caused by compound heterozygous deletions of glycosylphosphatidylinositol-anchored high-density lipoprotein-binding protein 1 (GPIHBP1).

Case Presentation: A 4-year-old boy was referred for the evaluation of severe hypertriglyceridemia (3734 mg/dL) that was incidentally detected 4 months prior.

Association between Dyslipidemia and Glycated Hemoglobin in a Population-Based Study.

Diabetes mellitus and dyslipidemia are well-known risk factors for cardiovascular disease. Unfortunately, the prevalence of dyslipidemia and diabetes mellitus among individuals over 30 years of age in Korea has continuously increased. The current study therefore investigated the association between dyslipidemia and high glycated hemoglobin (Hemoglobin A1c, HbA1c) levels according to age group in adults over 20 years old.

Effects of micro-sized biodegradable plastics on Microcystis aeruginosa.

Plethora of plastics are being used in current society, generating huge amounts of plastic waste. Non-biodegradability of conventional plastics is one of the main challenges to treat plastic waste. In an effort to increase the efficiency of plastic waste treatment, biodegradable plastics have gained attention.

Occupational Factors Associated With Workers' Depression, Anxiety, and General Fatigue.

Objective: We aimed to examine occupational factors affecting workers' mental health.

Methods: Using data from the fifth Korean Working Conditions Survey, 50,158 workers were analyzed. A multiple logistic regression analysis was conducted to analyze the occupational factors.

Ineffective implementation of emergency reduction measures against high concentrations of particulate matter in Seoul, Republic of Korea.

Since December 30, 2017, the Seoul Metropolitan Government, Republic of Korea, has been implementing emergency reduction measures (ERMs) restricting the operation of industrial sites, thermal power plants, and vehicles when air quality is expected to deteriorate. ERMs are implemented when the present observed concentration of particulate matter (PM) of aerodynamic diameter less than 2.5 μm (PM) and/or the predicted values for the following day exceed a threshold value.

Antioxidative and Anti-Inflammatory Activities of Rosebud Extracts of Newly Crossbred Roses.

Oxidative stress and inflammation are basic pathogenic factors involved in tissue injury and pain, as well as acute and chronic diseases. Since long-term uses of synthetic steroids and non-steroidal anti-inflammatory drugs (NSAIDs) cause severe adverse effects, novel effective materials with minimal side effects are required. In this study, polyphenol content and antioxidative activity of rosebud extracts from 24 newly crossbred Korean roses were analyzed.

GFAP as a Potential Biomarker for Alzheimer's Disease: A Systematic Review and Meta-Analysis.

Blood biomarkers have been considered tools for the diagnosis, prognosis, and monitoring of Alzheimer's disease (AD). Although amyloid-β peptide (Aβ) and tau are primarily blood biomarkers, recent studies have identified other reliable candidates that can serve as measurable indicators of pathological conditions. One such candidate is the glial fibrillary acidic protein (GFAP), an astrocytic cytoskeletal protein that can be detected in blood samples.

Critical contribution of moisture to the air quality deterioration in a warm and humid weather.

The deterioration of air quality that threatens human health is recognized as focal compound hazard. Here, decisive thermodynamic conditions for activation of secondary aerosol formation have been investigated focused on Korea. In a dry environment with relative humidity < 60%, gas phase reaction to form fine particles depended largely on surface temperature.

Chiral Supramolecular Multiblock Copolymerization Accompanying Chirality Transfer in Heterostructures via Living Chain Growth.

We report the unique synthesis of chiral supramolecular tri- and penta-BCPs with controllable chirality using kinetically adjusted seeded supramolecular copolymerization in THF and DMSO (99 : 1, v/v). Tetraphenylethylene (d- and l-TPE) derivatives bearing d- and l-alanine side chains formed thermodynamically favored chiral products via a kinetically trapped in monomeric state with a long lag phase. In contrast, achiral TPE-G containing glycine moieties did not form a supramolecular polymer owing to the energy barrier in its kinetically trapped state.

The cytotoxicity of nano- and micro-sized graphene oxides on microalgae depends on the characteristics of cell wall and flagella.

Cytotoxic effects of emerging contaminants in aquatic environments have been widely studied using diverse microalgal species. However, the role of microalgal characteristics such as presence/absence of cell wall or flagella on cytotoxicity of contaminants was not elucidated yet. In this study, four different Chlamydomonas reinhardtii strains that have different characteristics were used to confirm how these characteristics affect toxicity of contaminants, nano-/micro-sized graphene oxide (GO).

Association between health-related quality of life and nonadherence to antihypertensive medication.

Aim: We aimed to examine the association between nonadherence to antihypertensive medications and Health-related quality of life.

Design: A cross-sectional survey was undertaken.

Methods: This study was conducted using the data from the Korea National Health and Nutrition Examination Survey.

Factors associated with adolescents' sexual experience based on the biopsychosocial model: a cross-sectional study using the Korea Youth Risk Behavior Web-based Survey (KYRBS).

Objectives: Sexual activity is an important integrative behaviour that interacts with biological, psychological and social factors among various changes in adolescence. However, starting sex at an early age is associated with adverse outcomes. Thus, this study aimed to investigate the factors associated with adolescents' sexual experience based on the biopsychosocial model.

Medical students' perceived stress and perceptions regarding clinical clerkship during the COVID-19 pandemic.

Background: It is important to ensure that both the qualitative and quantitative aspects of clinical education are maintained during the pandemic. Understanding students' views on clinical rotations and the extent of their perceived pandemic-related stress would thus be useful for designing and implementing effective clerkship programs. Therefore, this study aimed to investigate perceived stress and perceptions regarding clinical clerkship among incoming clinical students (third year) and senior clinical students (fourth year) during the COVID-19 pandemic.

Volatile fatty acid-treated mixotrophic cultivation of lipid/carbohydrate-rich cyanobacterial species, Pseudanabaena mucicola GO0704, for the enhancement of biofuel production.

Cyanobacteria-derived biofuels can be helpful in achieving a circular bioeconomy. To increase the production of biodiesel/bioethanol from cyanobacterium, Pseudanabaena mucicola GO0704, mixotrophic cultivation using volatile fatty acid (VFA), a cheap organic carbon source, was performed. The treatment of butyric acid or acetic acid enhanced the cell growth, particularly, the dry weight of the butyric acid-treated cells was 2.

Elucidating the mechanisms underlying the cytotoxic effects of nano-/micro-sized graphene oxide on the microalgae by comparing the physiological and morphological changes in different trophic modes.

Understanding the cytotoxic mechanisms of environmental contaminants is important to estimate their environmental impacts and prepare guidelines for pollution control. Many studies have assessed the cytotoxic mechanisms of graphene oxide (GO), an emerging aquatic contaminant. However, in many cases, the effect of GO size and putative trophic modes of microalgae on cytotoxicity has been neglected, hindering complete understanding of the cytotoxic mechanisms of GO.

Circularly Polarized Luminescence Active Supramolecular Nanotubes Based on Pt Complexes That Undergo Dynamic Morphological Transformation and Helicity Inversion.

Circularly polarized luminescence (CPL) with tunable chirality is currently a challenging issue in the development of supramolecular nanomaterials. We herein report the formation of helical nanoribbons which grow into helical tubes through dynamic helicity inversion. For this, chiral Pt complexes of terpyridine derivatives, namely S-trans-1 and R-trans-1, with respective S- and R-alanine subunits and incorporating trans-double bonds in the alkyl chain were prepared.

Helicity-driven chiral self-sorting supramolecular polymerization with Ag: right- and left-helical aggregates.

The study of chiral self-sorting is extremely important for understanding biological systems and for developing applications for the biomedical field. In this study, we attempted unprecedented chiral self-sorting supramolecular polymerization accompanying helical inversion with Ag in one enantiomeric component. Bola-type terpyridine-based ligands (-L and -L) comprising - or -alanine analogs were synthesized.

The Association between Working Posture and Workers' Depression.

Various studies have focused on the association between physical health and working posture. However, little research has been conducted on the association between working posture and mental health, despite the importance of workers' mental health. This study aimed to examine the association between working posture and workers' depression.

Glutamic Acid Decarboxylase and Tyrosine Phosphatase-Related Islet Antigen-2 Positivity among Children and Adolescents with Diabetes in Korea.

Autoantibodies against glutamic acid decarboxylase (GADA), tyrosine phosphatase-related islet antigen 2 (IA2A), insulin (INSA), and islet cells (ICA) are critical for determining the type of diabetes and management strategy in new-onset diabetes mellitus (NODM), but there have been few reports of all diabetes-associated autoantibody (DAA) in Korea. We retrospectively analyzed 193 patients with NODM aged 0 to 18 years who were followed at two tertiary centers in Korea (2017 to 2021). Patients with type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) were 93 (48.

Potential Biomarkers for Post-Stroke Cognitive Impairment: A Systematic Review and Meta-Analysis.

Stroke is a primary debilitating disease in adults, occurring in 15 million individuals each year and causing high mortality and disability rates. The latest estimate revealed that stroke is currently the second leading cause of death worldwide. Post-stroke cognitive impairment (PSCI), one of the major complications after stroke, is frequently underdiagnosed.