266 results match your criteria: "The University of Suwon[Affiliation]"

Epoxy-Based Copper (Cu) Sintering Pastes for Enhanced Bonding Strength and Preventing Cu Oxidation after Sintering.

Polymers (Basel)

January 2024

Department of Polymer Engineering, School of Chemical and Materials Engineering, The University of Suwon, Hwaseong 18323, Gyeonggi-do, Republic of Korea.

The investigation of interconnection technologies is crucial for advancing semiconductor packaging technology. This study delved into the various methods of achieving electrical interconnections, focusing on the sintering process and composition of the epoxy. Although silver (Ag) has traditionally been utilized in the sintering process, its high cost often precludes widespread commercial applications.

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In this study, the effect of environmental a on microbial inactivation by intense pulsed light (IPL) was investigated. Three different microorganisms (Gram-positive bacteria, Gram-negative bacteria, and yeast) were used as test organisms. The effect of environmental a was assessed by irradiating each microbial suspension in sodium chloride solutions with different environmental a levels (0.

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Acoustofluidic separation of prolate and spherical micro-objects.

Microsyst Nanoeng

January 2024

Department of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186 Republic of Korea.

Article Synopsis
  • Most microfluidic separation methods focus on sorting particles by size, but this research introduces a technique that separates micro-objects based on their shape using acoustic waves.
  • The proposed method aligns non-spherical particles using acoustic radiation torque, allowing for effective shape-based separation by exploiting differences in particle morphology.
  • Experimental validation demonstrated high purity and recovery rates for the separation of various micro-objects, suggesting the method's potential for applications in drug delivery and biosensing.
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Wellness Perception of South Korean Elementary School Students during the COVID-19 Endemic.

Healthcare (Basel)

December 2023

Department of Physical Education, College of Education, WonKwang University, Iksan-si 54538, Republic of Korea.

Unlabelled: This study aimed to analyze health management awareness among South Korean elementary school students in COVID-19 endemic areas.

Methods: Using convenience sampling, 675 South Korean elementary school students (age 11-12 years old) were selected as participants in July 2023. Data for the study were collected via online and offline surveys between July and August 2023.

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How do nursing home nurses conceptualize the management of behavioral and psychological symptoms of dementia? A phenomenographic study.

Nurs Health Sci

January 2024

College of Nursing and L-HOPE Program for Community-Based Total Learning Health Systems, Korea University, Seoul, Republic of Korea.

The behavioral and psychological symptoms of dementia (BPSD) present complex challenges for nursing home (NH) nurses, leading to confusion and difficulties in providing effective care. To address these issues, investigating how NH nurses perceive and manage the BPSD is crucial since it can lead to the development of tailored and effective care plans. This study therefore aimed to explore the ways in which NH nurses approach the management of the BPSD by using phenomenography.

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Mitigation of T3SS-mediated virulence in waterborne pathogenic bacteria by multi-electrode cylindrical-DBD plasma-generated nitric oxide water.

Chemosphere

February 2024

Department of Electrical and Biological Physics /Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, South Korea. Electronic address:

S. enterica, S. flexneri, and V.

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Electrical and Thermal Properties of Surface-Modified Copper Nanowire/Polystyrene Nanocomposites through Latex Blending.

ACS Omega

December 2023

Department of Polymer Engineering, The University of Suwon, 17 Wauan-gil, Bongdam-eup, Hewaseong, Gyeonggi 18323, South Korea.

The incorporation of conductive nanofillers into an insulating polymer matrix commonly leads to nanocomposites with good electrical, thermal, and mechanical properties. In this study, copper nanowires (CuNWs) and polystyrene (PS) microspheres were synthesized along with the fabrication of CuNW/PS polymer nanocomposites. The electrical, thermal, mechanical, rheological, and morphological properties of the CuNW/PS nanocomposites were examined.

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Cold Atmospheric Pressure Plasma: A Growing Paradigm in Diabetic Wound Healing-Mechanism and Clinical Significance.

Int J Mol Sci

November 2023

Department of Electrical and Biological Physics/Plasma, Bioscience Research Center, Kwangwoon University, Seoul 01897, Republic of Korea.

Diabetes is one of the most significant causes of death all over the world. This illness, due to abnormal blood glucose levels, leads to impaired wound healing and, as a result, foot ulcers. These ulcers cannot heal quickly in diabetic patients and may finally result in amputation.

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Understanding the Trap Characteristics of Perovskite Solar Cells via Drive-Level Capacitance Profiling.

ACS Appl Mater Interfaces

November 2023

Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea.

Perovskite solar cells (PSCs) are gaining significant interest as the future of photovoltaics owing to their superior performance and cost-effectiveness. Nevertheless, traps in PSCs have emerged as issues that adversely affect the efficiency and stability of the devices. In this study, the methylammonium chloride (MACl) additive and phenyltrimethylammonium iodide (PTMAI) posttreatment were applied to passivate bulk and surface defects.

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Understanding and incorporating patients' perspectives are necessary to address the emerging challenge of chronic disease management. Our study examined patients' perceptions and experiences for the current chronic disease management system in South Korea. Focus group interviews were conducted on 23 patients and 11 themes emerged by qualitative content analysis.

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Atherosclerosis is a chronic inflammatory disease that is the underlying cause of cardiovascular disease which initiates from endothelial dysfunction from genetic and environmental risk factors, including biomechanical forces: blood flow. Endothelial cells (ECs) lining the inner arterial wall regions exposed to disturbed flow are prone to atherosclerosis development, whereas the straight regions exposed to stable flow are spared from the disease. These flow patterns induce genome- and epigenome-wide changes in gene expression in ECs.

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The coffee-ring structure, which is the final drying pattern of a sessile suspension droplet, is a key factor in controlling the uniformity of the particulate deposits in various coatings. Two light-scattering methods, diffusing wave spectroscopy (DWS) and multispeckle DWS (MSDWS), were used to quantitatively distinguish temporal changes in particle mobility in evaporating suspension droplets containing micrometer-sized silica and polystyrene (PS) particles. The characteristic particle mobility was measured in terms of the mean square displacement in the early stage of drying, and the local particle dynamics around the edge and center regimes of the droplets during drying were analyzed using MSDWS.

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A comprehensive error analysis of DNA-stored data during processing, such as DNA synthesis and sequencing, is crucial for reliable DNA data storage. Both synthesis and sequencing errors depend on the sequence and the transition of bases of nucleotides; ignoring either one of the error sources leads to technical challenges in minimizing the error rate. Here, we present a methodology and toolkit that utilizes an oligonucleotide library generated from a 10-base-shifted sequence array, which is individually labeled with unique molecular identifiers, to delineate and profile DNA synthesis and sequencing errors simultaneously.

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Copper Sintering Pastes with Various Polar Solvents and Acidic Activators.

ACS Omega

October 2023

Department of Polymer Engineering, School of Chemical and Materials Engineering, The University of Suwon, Hwaseong, Gyeonggi-do 18323, Republic of Korea.

Devices in the developing semiconductor market require high density, high integration, and detailed processing. Conventional wire bonding is inappropriate for fine-sized devices, and connected wires can be damaged by heat generation and external physical impact. Soldering is also used in advanced packaging technologies.

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The potential of multicylindrical dielectric barrier discharge plasma for diesel-contaminated soil remediation and biocompatibility assessment.

Environ Res

January 2024

Department of Electrical and Biological Physics/Plasma Bioscience Research Center, Kwangwoon University, 01897, Seoul, South Korea. Electronic address:

This study explored the use of multicylindrical dielectric barrier discharge (MC-DBD) plasma technology to eliminate diesel fuel contamination from the soil. This study also assessed the environmental impact of plasma-generated reactive species on soil properties, plant growth, and the safety of microbial and human skin cells using various analytical methods. MC-DBD plasma was characterized using the current-voltage analysis and optical emission spectroscopy (OES).

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Molecular insights: Proteomic and metabolomic dissection of plasma-induced growth and functional compound accumulation in Raphanus sativus.

Food Chem

March 2024

Plasma Bioscience Research Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, South Korea. Electronic address:

This study investigated the impact of plasma-activated water (PAW) on Raphanus sativus (radish) roots at the level of proteins and metabolites. PAW treatment induced the accumulation of reactive oxygen species (ROS) and nitrogen oxide species (NO) in radish and enhanced the activities of antioxidant enzymes. Proteomic analysis resulted in the identification of 6054 proteins, including 1845 PAW-modulated proteins that were majorly associated with energy metabolism, ROS-detoxification, phytohormones signaling, and biosynthesis of glucosinolates.

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Plasma-generated nitric oxide water: A promising strategy to combat bacterial dormancy (VBNC state) in environmental contaminant Micrococcus luteus.

J Hazard Mater

January 2024

Department of Electrical and Biological Physics/Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, South Korea. Electronic address:

The viable but non-culturable (VBNC) is an inactive state, and certain bacteria can enter under adverse conditions. The VBNC state challenges the environment, food safety, and public health since VBNCs may resuscitate and pose a risk to human health. The aim of this study was to investigate the effect of plasma-generated nitric oxide water (PG-NOW) on airborne contaminant Micrococcus luteus (M.

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Identification of Breast Cancer Metastasis Markers from Gene Expression Profiles Using Machine Learning Approaches.

Genes (Basel)

September 2023

Department of ICT Convergence System Engineering, Chonnam National University, Gwangju 61005, Republic of Korea.

Cancer metastasis accounts for approximately 90% of cancer deaths, and elucidating markers in metastasis is the first step in its prevention. To characterize metastasis marker genes (MGs) of breast cancer, XGBoost models that classify metastasis status were trained with gene expression profiles from TCGA. Then, a metastasis score (MS) was assigned to each gene by calculating the inner product between the feature importance and the AUC performance of the models.

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Background: Recent research suggests that persimmon leaf extract (PLE) has an effect on inflammatory skin diseases. Previously, PLE is revealed to inhibit not only nitric oxide production but also inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression levels in mouse macrophages in vitro. Moreover, it significantly reduced IL-6 production and 5α-reductase expression in human follicle dermal papilla cells (HFDPCs).

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In a short time, several types of injectable and oral therapeutics have been developed and used to effectively manage patients with coronavirus disease 2019 (COVID-19). BEN815 is an improved mixture of three extracts (Psidium guajava, Camellia sinensis, and Rosa hybrida) recognized by the Ministry of Food and Drug Safety of Korea as a health food ingredient that alleviates allergic rhinitis. The current animal efficacy study was performed to assess its probability of improving COVID-19 symptoms.

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Determining mutational landscapes in a spatial context is essential for understanding genetically heterogeneous cell microniches. Current approaches, such as Multiple Displacement Amplification (MDA), offer high genome coverage but limited multiplexing, which hinders large-scale spatial genomic studies. Here, we introduce barcoded MDA (bMDA), a technique that achieves high-coverage genomic analysis of low-input DNA while enhancing the multiplexing capabilities.

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Coarse wavelength division multiplexing (CWDM)-targeted novel silicon (Si)-nanowire-type polarization-diversified optical demultiplexers were numerically analyzed and experimentally verified. The optical demultiplexer comprised a hybrid mode conversion-type polarization splitter rotator (PSR) and a delayed Mach-Zehnder interferometric demultiplexer. Si-nanowire-based devices were fabricated using a commercially available Si photonics foundry process, exhibiting nearly identical spectral responses regardless of the polarization states of the input signals under the PSR.

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The job demands-resource model and performance: the mediating role of employee engagement.

Front Psychol

June 2023

Social Science Korea Research Team, Chung-Ang University, Seoul, Republic of Korea.

In case of a major social crisis, such as the coronavirus pandemic, the most important measure is to identify the determinants influencing employee health and well-being, which are directly linked to workplace job performance. Many studies have explored the role of employee engagement in the relationship between job resources, psychological capital, and job performance; however, only a few have investigated the relationships reflecting rapid changes in the work environment represented by digital transformation and a major social crisis. Considering this, this study examines how job autonomy and psychological well-being, which lower employee anxiety about health and welfare, influence in-role performance in the form of proactive employee characteristics as well as extra-role performance in the form of prosocial behavior, as mediated by employee engagement.

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Pen-drawing is an intuitive, convenient, and creative fabrication method for delivering emergent and adaptive design to real devices. To demonstrate the application of pen-drawing to robot construction, we developed pen-drawn Marangoni swimmers that perform complex programmed tasks using a simple and accessible manufacturing process. By simply drawing on substrates using ink-based Marangoni fuel, the swimmers demonstrate advanced robotic motions such as polygon and star-shaped trajectories, and navigate through maze.

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How experienced wound care nurses conceptualize what to do in pressure injury management.

BMC Nurs

June 2023

College of Nursing and BK21 FOUR R&E Center for Learning Health Systems, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul, 02841, Republic of Korea.

Background: Conceptual understanding of the perceptions that wound care nurses use to determine how to manage pressure injuries may provide information for improving their pressure injury care competency. The aim of this study is to explore and describe the way wound care nurses experience and perceive pressure injury management.

Methods: A qualitative, phenomenographic approach, a method designed to explore the different ways in which people comprehend a phenomenon and develop a practical knowledge-based framework, was used in this study.

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