4,006 results match your criteria: "Daejeon 34134; R&D Center[Affiliation]"

Article Synopsis
  • Eggs are nutritious but easily damaged, which can lead to contamination and economic losses, making effective crack detection essential.
  • Traditional crack detection methods often fail for processed eggs due to changes in their physical properties, prompting the need for new solutions.
  • This study introduces a novel device that uses electric discharge to detect cracks in eggs by applying a high-voltage field, showing promising results in accuracy and reliability for both raw and processed eggs, thus enhancing food safety.
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The Solute Carrier (SLC) Transporter Superfamily as Therapeutic Targets for the Treatment of Head and Neck Squamous Cell Carcinoma.

Cancers (Basel)

September 2024

Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 34134, Republic of Korea.

: Head and neck squamous cell carcinoma (HNSC) is the most prevalent cancer in the head and neck region, originating from the mucosal epithelium of the oral cavity, pharynx, and larynx. The solute carrier (SLC) transporter superfamily, consisting of over 400 proteins across 65 families, plays a crucial role in cellular functions and presents promising targets in precision oncology. This study aims to analyze the expression of SLC transporters in HNSC and their potential as biomarkers and therapeutic targets.

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Integrating Computational Design and Experimental Approaches for Next-Generation Biologics.

Biomolecules

August 2024

Department of Bio-AI Convergence, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea.

Article Synopsis
  • Therapeutic protein engineering is transforming medicine by creating highly targeted treatments for various diseases, focusing on areas like antibody engineering and enzyme therapies.
  • Recent advancements combine computational methods, such as structure-based design and machine learning, with experimental techniques like directed evolution to improve protein therapeutics.
  • Despite significant progress, challenges like predicting in vivo behavior and manufacturing remain, necessitating further integration of computational and experimental approaches for future breakthroughs in treatment development.
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Article Synopsis
  • * Recent research has highlighted the importance of chromosomal variations, like structural variants and variant blocks, in influencing agronomic traits and evolutionary processes in mushrooms but is limited by a lack of genomic data.
  • * In this study, genomes of strains with different temperature tolerances were reassembled, identifying a significant variant block on chromosome 9 linked to thermo-tolerant traits, which may have been selectively favored during mushroom domestication.
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This study investigated the potential of phosphodiesterase type 5 (PDE-5) inhibitors, specifically tadalafil, in preventing the delayed cerebral ischemia (DCI) post-rupture of cerebral aneurysms. A total of 19 rabbits were used in this study, divided into different treatment groups, including nimodipine alone, tadalafil alone, and a combination of nimodipine and tadalafil. Both nimodipine and tadalafil showed some impact on reducing endothelial apoptosis in the basilar arteries, although the effects were not statistically significant.

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Lithium-sulfur (Li-S) battery is a potential next-generation energy storage technology over lithium-ion batteries for high capacity, cost-effective, and environmentally friendly solutions. However, several issues including polysulfides shuttle, low conductivity and limited rate-capability have hampered its practical application. Herein, a new class of cathode active material with perfect core-shell structure is reported, in which sulfur is fully encapsulated by conductivity-enhancing FeS (named as S@FeS), for high-rate application.

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Recently, researchers have been investigating artificial ferroelectricity, which arises when inversion symmetry is broken in certain R-stacked, i.e., zero-degree twisted, van der Waals (vdW) bilayers.

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Currently generated nitrogen oxides (NO) and unburned ammonia (NH) can be converted into nitrogen and moisture that are harmless to the human body and environment using selective catalytic reduction (SCR). The concentrations of NO and unburned NH emitted from the ammonia combustion engines are significantly higher than those emitted by engines using existing hydrocarbon fuels. In this study, ammonia, a representative carbon-free fuel, was used in spark ignition engines for existing passenger vehicles to identify the trends in exhaust gases emitted from engines and conduct experiments on after-treatment strategies to reduce NO and unburned NH.

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The rapid development of the electronics market necessitates energy storage devices characterized by high energy density and capacity, alongside the ability to maintain stable and safe operation under harsh conditions, particularly elevated temperatures. In this study, a semi-solid-state electrolyte (SSSE) for Li-metal batteries (LMB) is synthesized by integrating metal-organic frameworks (MOFs) as host materials featuring a hierarchical pore structure. A trace amount of liquid electrolyte (LE) is entrapped within these pores through electrochemical activation.

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Advances and Applications of Oxidized van der Waals Transition Metal Dichalcogenides.

Adv Sci (Weinh)

November 2024

Department of Materials Science and Engineering, Chungnam National University, Daejeon, 34134, Republic of Korea.

The surface oxidation of 2D transition metal dichalcogenides (TMDs) has recently gained tremendous technological and fundamental interest owing to the multi-functional properties that the surface oxidized layer opens up. In particular, when integrated into other 2D materials in the form of van der Waals heterostructures, oxidized TMDs enable designer properties, including novel electronic states, engineered light-matter interactions, and exceptional-point singularities, among many others. Here, the evolving landscapes of the state-of-the-art surface engineering technologies that enable controlled oxidation of TMDs down to the monolayer-by-monolayer limit are reviewed.

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Synthesis and characterization of methacryl glycol chitosan as a novel functionally advanced thermogel for biomedical applications.

Int J Biol Macromol

November 2024

Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea; Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea. Electronic address:

Thermo-responsive hydrogels (thermogels), known for their sol-gel transition capabilities, have garnered significant interest for biomedical applications over recent decades. However, conventional thermogels are hindered by intrinsic physicochemical and functional limitations that impede their broader utility. This study introduces methacryl glycol chitosan (MGC) as a novel thermogel, offering enhanced functionality and addressing these limitations.

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Article Synopsis
  • Resmethrin is an insecticide used to control pests in homes and farms, but it can leave harmful residues in the environment and living things.
  • Previous research found that resmethrin can cause serious health issues, like damage to the brain and liver, but its effects on women's reproductive health were not well studied.
  • In this study, researchers found that resmethrin can harm certain cells related to reproduction, making it harder for them to grow and work properly, which could affect pregnancy.
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Chitosan-gallic acid conjugate edible coating film for perishable fruits.

Food Chem

January 2025

Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea. Electronic address:

Approximately 30 % of global agricultural land is used to produce food that is ultimately lost or wasted, making it imperative to explore strategies for mitigating this waste. This study explored the potential of chitosan (CS) derivatives as edible coatings to extend food shelf life. Although soluble CS derivatives such as glycol CS are suitable coatings, their antimicrobial properties often diminish with increased solubility.

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Hexagonal boron nitride (BN), a well-known member of 2D materials, has a structure similar to graphene and is often referred to as white graphene. Despite its unique physical and chemical properties for energy storage applications, there have been very few studies on how BN stores anion carriers. Herein, the hybrid architecture and anion storage mechanism of BN nanosheets for high-performance hybrid energy storage full cells based on dual-ion and Zinc (Zn) alkaline systems is demonstrated.

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Laser-responsive erastin-loaded chondroitin sulfate nanomedicine targeting CD44 and system x in liver cancer: A non-ferroptotic approach.

J Control Release

November 2024

College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:

Article Synopsis
  • Erastin, a drug that induces ferroptosis, has limitations such as poor effectiveness and toxicity, which led to the development of ECINs, a new nanomedicine that enhances tumor targeting and reduces side effects.
  • ECINs are created using chondroitin sulfate A derivatives and indocyanine green, providing sustained release and stability while significantly improving erastin delivery to tumors and minimizing harm to other organs.
  • In studies, ECINs not only arrested cancer cell growth but also effectively shrank tumors when combined with laser treatment, indicating a promising new method for liver cancer therapy targeting CD44-overexpressing tumors.
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Are 19del and L858R really different disease entities?

Future Oncol

October 2024

Division of Medical Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.

Clinicians have recognized the similarities and differences between the two subtypes of common epidermal growth factor receptor (EGFR) mutations, but actual treatment strategies have not yet changed. The L858R mutation can be understood by considering the pharmacological conformational plasticity of the receptor protein and the presence of other co-occurring mutations, whether subtypes of EGFR or non-EGFR mutations and differences in downstream signaling pathways. As long as we know that molecular differences lead to biological differences, it is a challenge for all of us that our treatment strategies must change.

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As interest in eco-friendly work vehicles grows, research on the powertrains of eco-friendly tractors has increased, including research on the development of eco-friendly vehicles (tractors) using hydrogen fuel cell power packs and batteries. However, batteries require a long time to charge and have a short operating time due to their low energy efficiency compared with hydrogen fuel cell power packs. Therefore, recent studies have focused on the development of tractors using hydrogen fuel cell power packs; however, there is a lack of research on powertrain performance analysis considering actual working conditions.

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Vepdegestrant (formerly ARV-471), a novel proteolysis-targeting chimera (PROTAC), targets estrogen receptor alpha (ERα) for degradation, offering a promising option to treat advanced ER-positive breast cancer. We developed and validated a sensitive and rapid liquid chromatography-tandem mass spectrometry method to quantify vepdegestrant in rodent plasma using bavdegalutamide (formerly ARV-110) as an internal standard. Plasma samples were prepared with protein precipitation using acetonitrile and analyzed using reverse-phase C18 columns and a mobile phase of 10 mM ammonium formate in distilled water and acetonitrile.

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Article Synopsis
  • Cryopreservation at -196 °C is a key method for long-term storage of non-orthodox seeds and wild flora, though its implementation faces challenges like poor in vitro propagation techniques and a lack of standard protocols.
  • This study created a systematic droplet-vitrification cryopreservation method specifically for shoot tips, using a two-step sucrose preculture and specialized cryoprotective solutions.
  • The results showed that using liquid overlay during regrowth significantly improved plantlet development from cryopreserved samples, achieving an 80% regeneration rate—23% higher than without the overlay.
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Article Synopsis
  • - Recent advancements in experimental techniques and computational methods have transformed our understanding of protein dynamics, highlighting motions from tiny atomic vibrations to significant structural changes.
  • - Tools like nuclear magnetic resonance spectroscopy and molecular dynamics simulations allow for detailed observation of protein movements, while machine learning innovations like AlphaFold2 improve predictions of protein structures and dynamics.
  • - Understanding these dynamics is crucial for aspects such as allosteric regulation, enzyme function, and drug design, representing a major shift in fields like structural biology and biocatalyst development.
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The Ames test is used worldwide to initially screen the mutagenic potential of new chemicals. In the standard Ames test, S. typhimurium strains (TA100, TA98, TA1535, and TA1537) and Escherichia coli (WP2uvrA) are treated with substances with/without cytochrome P450s (CYPs)-induced rat S9 fractions for identifying mutagens and pro-mutagens.

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Ecotoxicological effects of suspended sediments on marine microalgae using flow cytometry and pulse-amplitude modulation (PAM) fluorometry.

Mar Pollut Bull

November 2024

School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:

Microalgal bioassays were conducted to evaluate the ecotoxicological effects of suspended sediments (SS) collected from coastal environments. Growth inhibition was assessed for six microalgal species, and multiple endpoints were measured using flow cytometry (FCM) and pulse-amplitude modulation (PAM) fluorometry for three species (Dunaliella tertiolecta, Isochrysis galbana, and Phaeodactylum tricornutum). Among these, the EC50 for growth inhibition of D.

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Two-dimensional (2D) materials have emerged as a promising candidate in the chemoresistive gas sensor field to overcome the disadvantages of conventional metal-oxide semiconductors owing to their strong surface activities and high surface-to-volume ratio. This review summarizes the various approaches to enhance the 2D-material-based gas sensors and provides an overview of their progress. The distinctive attributes of semiconductor gas sensors employing 2D materials will be highlighted with their inherent advantages and associated challenges.

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The effects of cauliflower treated with atmospheric cold plasma (ACP), as a natural nitrite source, on the curing of ground ham and nitrosamine formation were investigated. Ground ham was prepared using sodium nitrite and ACP-treated cauliflower powder (PTCP) to achieve initial nitrite concentrations of 60 and 100 mg/kg, respectively. ACP treatment generated nitrite in cauliflower but significantly reduced the antioxidant activity (P < 0.

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