Publications by authors named "Jeongho Lee"

This study aimed to develop a novel functional jelly by incorporating dieckol-rich extracts from (). In the extraction process, a high dieckol yield (16.5 mg/g biomass) was achieved by response surface optimization (optimum conditions: 55.

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The olive flounder, Paralichthys olivaceus, also known as the Korean halibut, is an economically important flatfish in East Asian countries. Here, we provided four fully phased genome assemblies of two different olive flounder individuals using high-fidelity long-read sequencing and their parental short-read sequencing data. We obtained 42-44 Gb of ~15-kb and ~Q30 high-fidelity long reads, and their assembly quality values were ~53.

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has been utilized as a medicinal plant in Asia. However, the production of phytochemical-rich extracts from and the evaluation of their bioactivity are limited. Herein, phytochemical-rich extracts were prepared by ultrasound-assisted extraction of , with a high extraction yield of 16.

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Article Synopsis
  • Numerical solutions to PDEs are crucial for material structural design, but traditional methods need a lot of computational power, prompting a search for better optimization algorithms.
  • Direct gradient-based optimization, while useful, struggles with design initialization and complicated sensitivity calculations, making machine learning an appealing solution for managing large parameter spaces.
  • The research introduces a new method using weak formulations in physics-informed neural networks to overcome continuity challenges in structural mechanics, particularly for digital materials, allowing for accurate modeling and faster optimization without the necessity for pretrained models.
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As satellite launching increases worldwide, uncertainty quantification for satellite data becomes essential. Misunderstanding satellite data uncertainties can lead to misinterpretations of natural phenomena, emphasizing the importance of validation. In this study, we established a tower-based network equipped with multispectral sensors, SD-500 and SD-600, to validate the satellite-derived NDVI product.

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  • Hypoxic responses are linked to various health issues like inflammation and cancer, sparking interest in natural remedies.
  • Recent findings show that Lactiplantibacillus plantarum K8 (K8) has anti-inflammatory effects, but its impact on hypoxia-related cellular responses was previously unknown.
  • This study reveals that K8 lysates can significantly suppress HIF1α accumulation and target gene expression under hypoxic conditions, suggesting a unique role in regulating cellular responses to low oxygen levels.
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The utilization of low-density and robust mechanical metamaterials rises as a promising solution for multifunctional electromagnetic wave absorbers due to their structured porous structures, which facilitates impedance matching and structural absorption. However, the various geometrical parameters involved in constructing these metamaterials affect their electromagnetic response, necessitating a comprehensive understanding of underlying absorbing mechanisms. Through experimentally validated numerical analysis, this study delves into the influence of geometrical factors on the electromagnetic response of representative low-density, high strength mechanical metamaterials, namely octet-truss and octet-foam.

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Background: To increase skin permeability, various transdermal delivery techniques have been developed. However, due to the stratum corneum as a skin barrier, transdermal delivery remains limited.

Aims: In this study, we evaluated efficacy and safety of arc-poration as a novel technique disrupting the stratum corneum.

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  • Bacterial cellulose (BC) has great potential in various industries, but its production is often not cost-effective, limiting its use in commercial applications.
  • Researchers improved BC production by using a mutant strain of Gluconacetobacter xylinus, identified as LYP25, and developed a new hydrolysate medium from chestnut pericarp, which enhanced productivity while reducing costs.
  • The fermentation process using the LYP25 strain in the new medium resulted in a 33% higher BC yield compared to traditional methods, achieving 17.3 g/L of BC, with comparable properties to existing products.
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Peanut shells (PSs) generated from agricultural waste contain valuable compounds with bioactive properties such as anti-aging, antimicrobial, and antioxidant properties, making it desirable to recycle them as a sustainable resource. The aim of this study is to design an effective luteolin recovery process as the first step of an integrated biorefinery utilizing PSs as raw material. The major extraction variables and their ranges for luteolin recovery from PSs were determined (0-60 °C, 1-5 h, 0-100% MeOH concentration) and a predictive model was derived through a response surface methodology (RSM).

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Polymeric immunoglobulin receptor (pIgR) mediates the transfer of polymeric immunoglobulin to protect organisms and is one of the most important mucosal effectors. In this study, the developmental stage- and tissue-specific expression of pIgR were observed before virus inoculation in olive flounder. pIgR was gradually expressed until the formation of immune tissue, exhibiting high expression in the late juvenile period; thereafter, pIgR expression gradually decreased and exhibited high expression in the spleen and skin.

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The limited yield of var. root bark (URB) extract is considered an economic loss to the food industry. Improving extraction yield and bioactivity through fermentation increase the industrial usage of URB.

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Article Synopsis
  • Evaluating leachate leakage from livestock burial sites is tough, especially with existing groundwater contamination from farming practices.
  • A supervised machine learning model was developed, using water sample data from various sources, to identify the impacts of carcass leachate versus existing pollutants.
  • Results showed leachate contamination in 40% of monitoring well samples and some household wells, highlighting the need for better burial pit management and offering a tool for assessing groundwater pollution.
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A highly sensitive and flexible gas sensor that can detect a wide range of chemicals is crucial for wearable applications. However, conventional single resistance-based flexible sensors face challenges in maintaining chemical sensitivity under mechanical stress and can be affected by interfering gases. This study presents a versatile approach for fabricating a micropyramidal flexible ion gel sensor, which accomplishes sub-ppm sensitivity (<80 ppb) at room temperature and discrimination capability between various analytes, including toluene, isobutylene, ammonia, ethanol, and humidity.

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Bacterial cellulose (BC), a natural polymer synthesized by bacteria, has received considerable attention owing to its impressive physicomechanical properties. However, the low productivity of BC-producing strains poses a challenge to industrializing this material and making it economically viable. In the present study, UV-induced random mutagenesis of Gluconacetobacter xylinus ATCC 53524 was performed to improve BC production.

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Bacterial cellulose (BC) is gaining attention as a carbon-neutral alternative to plant cellulose, and as a means to prevent deforestation and achieve a carbon-neutral society. However, the high cost of fermentation media for BC production is a barrier to its industrialization. In this study, chestnut shell (CS) hydrolysates were used as a carbon source for the BC-producing bacteria strain, ATCC 53524.

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In this study, the levels of plasma estradiol-17β (E) in farmed Anguilla japonica were measured to determine their sex. The analyses were performed for two different size groups (large group, Total length (TL): 61-69 cm; small group, TL: 53-60 cm). The anatomical and histological observations showed that the large group consisted of 29% males and 71% females; the small group, 54% males and 45% females.

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Septin is an evolutionarily conserved family of GTP-binding proteins. Septins are known to be involved in a variety of cellular processes, including cell division, chromosome separation, cell polarity, motility, membrane dynamics, exocytosis, apoptosis, phagocytosis, DNA damage responses, and other immune responses. In this study, the sequences of the septin gene family of starry flounder were obtained using NGS sequencing, and the integrity of the sequences was verified through cloning and sequencing.

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Interferon Regulatory Factor 3 (IRF3) is a member of interferon-regulated transcription factor family and is known to play an important role in the innate immune response against viral infections. In this study, the expression of IRF3 in different tissues, developmental stages, and stocking densities of olive flounder was investigated. The expression of IRF3 was observed to gradually increase in early-stage juvenile fish.

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Biofuel policies are currently being implemented globally to reduce greenhouse gas emissions. The recent European regulation, Renewable Energy Directive (RED) II, states that renewable resources should be used as raw materials. In this study, chestnut shell (CNS), a food processing residue, was utilized as a feedstock for bioethanol production.

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In bistable actuators and other engineered devices, a homogeneous stimulus (e.g., mechanical, chemical, thermal, or magnetic) is often applied to an entire shell to initiate a snap-through instability.

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A 25-year-old female presented with a generalized tonic-clonic seizure. She had no previous history of seizures. A brain magnetic resonance imaging scan revealed a solitary enhancing mass in the right fronto-parietal cortex.

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