Tailoring dual cross-linked polymer-ionic liquid composites by blending co-crystallizable polymers for stretchable electronics.

Facile adjustment of the behavior of dual cross-linked polymer-ionic liquid composites (PICs) for stretchable electronics was achieved solution blending of two copolymers having the same monomer pairs. Two poly(docosyl acrylate--butyl acrylate) (poly(A22-BA)) copolymers with different molar ratios were synthesized and solution-cast with ionic liquids (ILs) to fabricate ternary PICs. The phase behavior and the thermal and structural properties of the composites were investigated by varying the mixing ratio, providing insights into the cross-linking mechanisms.

LCST/UCST behavior of polysaccharides for hydrogel fabrication.

Hydrogel-based scaffolds play a crucial role in widespread biotechnological applications by providing physicochemical stability to loaded cells or therapeutic agents, interacting with organismal microenvironments, and controlling cargo release. Polysaccharides are regarded as attractive candidates among substrate materials because of their high water-retaining capacity, reactive functional groups, ease of gelation, low immunogenicity, biodegradability, and biocompatibility. However, employing polysaccharide-based hydrogel scaffolds for practical use in response to ongoing physiological and pathological changes within the human body, such as insufficient mechanical strength, uncertain degradation, and uncontrollable release patterns, is challenging.

A simple and cost-effective hybrid stationary phase for the separation of peptides, proteins and benzene derivatives through liquid chromatography.

A very simple and cost-effective silica-based hybrid stationary phase was synthesized for the separation of five synthetic peptides, five proteins, and benzene derivatives. Silica monolith was synthesized sol-gel process. Particles obtained through the grinding of silica monolith were suspended in methanol and sedimented under gravity to obtain sub-2 μm particles.

A new species of (Annelida, Opheliidae) from the Yellow Sea of South Korea.

Background: Ehlers, 1897 is a genus of Opheliidae characterised by the body divided into three distinct regions, modified parapodia in chaetiger 10 and a ventral groove restricted to the posterior half of the body. To date, 18 species have been described in the genus. Amongst them, six species have been recorded in northeast Asia.

sp. nov., a new monogonont rotifer with a large epipharynx from Korea (Rotifera, Proalidae).

Background: The family Proalidae Harring & Myers, 1924, includes four genera and 53 species, distributed across all eight biogeographic realms and inhabiting various environments, including freshwater, saltwater and terrestrial environments. The genus , the largest within Proalidae, encompasses 41 species characterised by diverse morphological traits. In Korea, the presence of Proalidae has been documented with five known species: Wilts, Martínez Arbizu & Ahlrichs, 2010, (Milne, 1886), (Bryce, 1897), Wulfert, 1937 and (Collins, 1872).

PPIH as a poor prognostic factor increases cell proliferation and m6A RNA methylation in hepatocellular carcinoma.

RNA-binding proteins (RBPs) play a crucial role in the biological processes of liver hepatocellular carcinoma (LIHC). Peptidyl-prolyl cis-trans isomerase H (PPIH), an RBP, possesses prolyl isomerase activity and functions as a protein chaperone. The relationship between PPIH and LIHC has not yet been fully elucidated.

The first report of Bathynellacea in the subterranean water of Mongolia: A new species of Camacho, 2020 (Crustacea, Bathynellidae).

Background: We report the first finding of Bathynellacea, discovered in Mongolia. We also report a new species of the genus Camacho, 2020, which was previously recorded only in the western edge of Russia.

New Information: sp.

Real-time analysis and prediction method of ion concentration using the effect of O-H stretching bands in aqueous solutions based on ATR-FTIR spectroscopy.

Analyzing the concentration of ions in aqueous solutions in real-time plays an important role in the fields of chemistry and biology. Traditional methods for measuring ion concentrations, such as concentration analysis by measuring electrical conductivity, inductively coupled plasma mass spectrometry, and ion chromatography, have been used in many research fields. However, these methods are limited in determining ion concentrations instantaneously.

Recent progress in graphene and its derived hybrid materials for high-performance supercapacitor electrode applications.

Graphene, the most fascinating 2D form of carbon with closely packed carbon atoms arranged in a layer, needs more attention in various fields. For its unique electrical, mechanical, and chemical properties with a large surface area, graphene has been in the limelight since its first report. Graphene has extraordinary properties, making it the most promising electrode component for applications in supercapacitors.

Enhancing MgO efficiency in CO capture: engineered MgO/Mg(OH) composites with Cl, SO, and PO additives.

The formation of a MgCO shell hampers CO capture efficiency in MgO. Our previous studies developed MgO/Mg(OH) composites to facilitate CO diffusion, improving capture efficiency. However, MgCO still formed along the interfaces.

Modulating the folding and binding of peptides using a stimuli-responsive molecular tweezer.

This study presents the development of a β-hairpin (tryptophan zipper, Trpzip)-based molecular tweezer (MT) that can control the folding and binding of α-helical peptides. When an α-helix isolated from the p53 protein was conjugated with Trpzip in an optimized macrocyclic structure, the folded β-hairpin stabilized the helix conformation through the side chain-to-side chain stapling strategy, which notably enhanced target (hDM2) affinity of the peptide. On the other hand, the helicity and binding affinity were significantly reduced when the hairpin was unfolded by a redox stimulus.

The Interaction Effects of Age and Body Size on Body Appreciation and Health- Related Behaviors.

Whilst the associations among age, body size, body (dis)satisfaction, and weight management behavior have been well documented, there is little research on how the combination of age and body size is related to body appreciation and health-related behavioral intentions. The purpose of this study is to identify the associations of age, body size, and their interactions with body appreciation and health-related behavioral intentions among Korean women. A cross-sectional research design was adopted with a convenience sampling method.

A new species of the genus (Rotifera, Monogononta) from Korea, with reports of four additional cephalodellid species.

A new monogonont rotifer, , was described from a soil sample collected in Korea. The new species is morphologically similar to but is distinguished by having two frontal eyespots, a vitellarium with eight nuclei, and the shape of its fulcrum. We also described four other cephalodellid species collected in Korea; , , , and .

A new species of (Crustacea, Amphipoda, Gammaridae) from South Korea.

A new species of freshwater gammarid, , was collected from Somaemuldo Island, South Korea. This new species is morphologically characterised by the absence of calceoli in antenna 2, absence of anteroproximal setae on bases in pereopods 6 and 7, outer ramus in uropod 3 with plumose setae on both margins, and a small terminal article of the outer ramus, which is shorter than adjacent spines. A description of the new species and morphological differences from related species are provided in the text.

 sp. nov., a new spionid species (Annelida, Spionidae) from the Korea Strait.

A new spionid polychaete, , was discovered in the fine sandy sediments of an intertidal habitat from Korean waters. The new species is considered a simultaneous hermaphrodite, but no brooding embryos were found in any of the specimens collected in this study. This species is unique in the absence of ciliation in the anteriormost chaetigers.

Ultra-thin membrane filter with a uniformly arrayed nanopore structure for nanoscale separation of extracellular vesicles without cake formation.

Extracellular vesicles (EVs) have emerged as vehicles that mediate diverse cell-cell communication. However, in-depth understanding of these vesicles is hampered by a lack of a reliable isolation method to separate different types of EVs with high levels of integrity and purity. Here, we developed a nanoporous and ultra-thin membrane structure (NUTS) that warrants the size-based isolation of EVs without cake formation, minimizing the sample loss during the filtration process.

Path algorithms for fused lasso signal approximator with application to COVID-19 spread in Korea.

The fused lasso signal approximator (FLSA) is a smoothing procedure for noisy observations that uses fused lasso penalty on unobserved mean levels to find sparse signal blocks. Several path algorithms have been developed to obtain the whole solution path of the FLSA. However, it is known that the FLSA has model selection inconsistency when the underlying signals have a stair-case block, where three consecutive signal blocks are either strictly increasing or decreasing.

Preoperative perforator localization in anterolateral thigh free flap using acoustic doppler and computed tomography angiography.

Objectives: Our aim in this study was to investigate if we could predict perforator localization during ALTF elevation, using information from acoustic Doppler (AD) and computed tomography angiography (CTA).

Methods: Prospective observational data were collected from H&N cancer patients who received reconstruction with ALTF in Ajou University Hospital Cancer Center from June to December, 2021. Total of 21 cases were included in the analysis.

First-principles design of hetero CoM (M = 3d, 4d, 5d block metals) double-atom catalysts for oxygen evolution reaction under alkaline conditions.

As an extension of single-atom catalysts, the development of double-atom catalysts with high electrocatalytic activity for the oxygen evolution reaction (OER) is vital to facilitate hydrogen production and industrial applications. The CoM (M = 3d, 4d, 5d block metals) homo and double-atom catalysts supported on nitrogen-doped graphene (CoM/NG) were prepared for electrochemical water oxidation under alkaline conditions, and the electrocatalytic activity was studied through density functional theory (DFT) calculations. The hetero CoCu/NG double-atom catalyst indicated the highest OER activity with an onset potential of 0.

Antioxidant and anti-aging potential of a peptide formulation (Gal-Pep) conjugated with gallic acid.

Skin is highly vulnerable to premature aging due to external stress, therefore, in this study, a peptide formulation, (galloyl)-KTPPTTP (Gal-Pep) was synthesized by combining TPPTTP peptide, and gallic acid (GA). All peptides were synthesized on 2-chlorotrityl chloride resin using solid-phase peptide synthesis (SPPS), and analyzed on an electrospray ionization (ESI)/quadrupole-time-of-flight (Q-TOF) tandem mass spectroscopy (MS) system. Initially, Gal-Pep showed no toxicity below the concentration 100 μM with cell survival rate of 88% for keratinocytes and fibroblasts.

Two new species of feather mites (Acariformes, Astigmata) from the black-tailed godwit, (Charadriiformes, Scolopacidae), in Korea.

Two new species of feather mites are described from two individuals of the black-tailed godwit, (Linnaeus, 1758), in Korea: Alloptes (Conuralloptes) neolimosae (Analgoidea, Alloptidae) and (Pterolichoidea, Syringobiidae). Males of A. (C.

Investigation of correlative parameters to evaluate EUV lithographic performance of PMMA.

Investigations to evaluate the extreme ultraviolet (EUV) lithographic performance of 160 nm thick poly(methyl methacrylate) with 13.5 nm wavelength EUV light were performed using a synchrotron radiation source at Pohang Light Source-II (PLS-II). The single system enabled the determination of the sensitivity, contrast, linear absorption coefficient, critical dimension, and line edge roughness of polymer thin films through tests and measurements.

A scalable, ecofriendly, and cost-effective lithium metal protection layer from a Post-it note.

Although there have been many studies addressing the dendrite growth issue of lithium (Li)-metal batteries (LMBs), the Li-metal anode has not yet been implemented in today's rechargeable batteries. There is a need to accelerate the practical use of LMBs by considering their cost-effectiveness, ecofriendliness, and scalability. Herein, a cost-effective and uniform protection layer was developed by simple heat treatment of a Post-it note.

New species of the genus (Annelida, Spionidae) from the southern and western coasts of Korea.

A new spionid polychaete, , is described from the southern and western coasts of Korea. This new species differs from its congeners by the combination of the following morphological characteristics: the presence of orange-brown pigmentation on the anterior part of the prostomium, black pigmentation on the peristomium and along the body, U-shaped nuchal organs, a comparatively long extension of metameric dorsal ciliated organs, three pairs of white dots per chaetiger, two to three posterior abranchiate chaetigers, and the presence of tridentate neuropodial hooded hooks. The partial 16S ribosomal DNA (rDNA) and nuclear 18S rDNA sequences of the new species and sp.

Feather mites (Acariformes, Astigmata) from marine birds of the Barton Peninsula (King George Island, Antarctica), with descriptions of two new species.

We report on the first investigation of feather mites associated with birds living on the Barton Peninsula (King George Island, Antarctica). We found seven feather mite species of the superfamily Analgoidea from four host species. Two new species are described from two charadriiform hosts: Alloptes (Sternalloptes) antarcticus (Alloptidae) from Saunders (Stercorariidae), and (Xolalgidae) from (Gmelin) (Chionidae).