4,465 results match your criteria: "National central University[Affiliation]"

A functional eutectogel based on ultrahigh-molecular weight polymers: Physical entanglements in deep eutectic solvent.

J Colloid Interface Sci

December 2024

Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan. Electronic address:

Eutectogels have emerged as a promising material for wearable devices due to its superior ionic conductivity, non-volatility, and low cost. Despite numerous efforts, only a limited number of polymers and gelling mechanisms have been successfully employed in the fabrication of eutectogels. In this study, an effective three-dimensional network is developed based on the entanglements of polymer chains, facilitating the formation of an entangled eutectogel.

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Enhancing Amperometric Ozone Gas Sensing with Room-Temperature Ionic Liquids and Platinum-Based Electrodes.

ACS Appl Mater Interfaces

January 2025

Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Centre, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China.

Ozone (O) poses serious health risks, prompting numerous countries to implement regulations that establish exposure limits and emission controls, for example, the air quality index (AQI) for O ranging from 50 to 150 parts per billion (ppb), with natural levels at around 30 ppb. Electrochemical sensors are favored for detecting pollutant gases due to their high sensitivity, low cost, portability, energy efficiency, and capability for selective detection. In this study, we developed an O sensor employing carbon-supported Pt-based binary and ternary nanorods (NRs) combined with room-temperature ionic liquids (RTILs) as electrolytes, aiming at highly sensitive and selective detection of O at ppb levels.

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This study explores the concurrent formation of surface perforations, parallel cylinders, and double gyroids in symmetric PS--PMMA/hPS blend films during isothermal annealing at 205 and 240 °C. By controlling the weight fraction ratio of PS--PMMA to hPS at 75/25, we systematically examined the impact of film thickness and annealing temperature on nanodomain development. Using GISAXS and SEM, we observed that thin films rapidly formed surface perforations and underlying parallel cylinders at both annealing temperatures.

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The formation and subsequent self-organization of a spiral electron density modulation initialized in a plasma produced by optical-field ionization of various gas species is studied. Our analytical model predicts that the spiral density modulation results from space-dependent drift velocities of the ionized electrons due to the spatial and temporal intensity distributions of the circularly polarized ionizing laser. The spiral topology of the electron density has been validated by three-dimensional particle-in-cell simulations.

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Background: Patients with Parkinson's disease (PD) present progressive deterioration in both motor and non-motor manifestations. However, the absence of clinical biomarkers for disease progression hinders clinicians from tailoring treatment strategies effectively.

Objectives: To identify electroencephalography (EEG) biomarker that can track disease progression in PD.

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Article Synopsis
  • The CMS experiment conducted a search for charge-parity violation in decays using proton-proton collision data from 2018, analyzing around 10 billion events with b hadrons decaying into charm hadrons.
  • The flavor of the neutral D meson was determined through the charge of pions in the reconstructed decays, and an asymmetry measurement in the decays was reported, taking into account various uncertainties.
  • This research marks the first asymmetry measurement by the CMS in the charm sector and the first to use a fully hadronic final state in such analyses.
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Evolution of aluminum aminophenolate complexes in the ring-opening polymerization of ε-caprolactone: electronic and amino-chelating effects.

Dalton Trans

January 2025

Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.

A series of aluminum complexes bearing phenolate (O-Al and O2-Al), biphenolate (OO-Al type), aminophenolate (ON-Al), aminobiphenolate (ONO-Al), bis(phenolato)bis(amine) (NNOO-Al), and Salan (ONNO-Al) type ligands were synthesized. ε-Caprolactone (CL) polymerization using these aluminum complexes as catalysts was investigated. The overall polymerization rates of Al catalysts with different ligands were found to be in the following order ( values): ONBr-Al (0.

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Topological states in finite graphene nanoribbons tuned by electric fields.

J Phys Condens Matter

December 2024

Department of Electrical Engineering and Department of Physics, National Central University, Chungli 32001, Taiwan.

Article Synopsis
  • * We observe a blue Stark shift in energy levels for formal topological states, while the interface states exhibit an oscillatory Stark shift around the Fermi level.
  • * Our findings highlight the impact of the Stark effect on transmission coefficients and suggest that electric fields can control coupling strength in topological interface states, offering insights for future electronic devices and quantum technologies.
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The glucoconjugation between linear chimeric α-(1→4)- and α-(1→6)-glucosidic segments exhibits functional properties throughout their structure. In this study, we enzymatically synthesized three new series of chimeric nonreducing isomaltomegalosaccharides (N-IMS-n/m), each featuring a constant n, α-(1→4)-segment (average degree of polymerization, DP = 22-25) at the nonreducing terminal, and varying m, α-(1→6)-main chain lengths (DP = 7-53). The synthesized compounds-N-IMS-25/7, N-IMS-24/19, and N-IMS-22/53-were compared to amylose (DP = 28) and previous samples of N-IMS-15/35 and D-IMS-28.

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Article Synopsis
  • The study focuses on detecting multijet signatures from proton-proton collisions at a high energy of 13 TeV, analyzing a dataset totaling 128 fb^{-1}.
  • A special data scouting method is utilized to pick out events with low combined momentum in jets.
  • This research is pioneering in its investigation of electroweak particle production in R-parity violating supersymmetric models, particularly examining hadronically decaying mass-degenerate higgsinos, and it broadens the limits on the existence of R-parity violating top squarks and gluinos.
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Black carbon, or soot, significantly contributes to atmospheric light absorption due to its low single scattering albedo (SSA). This study investigates the impact of soot's hygroscopic restructuring on satellite remote sensing, focusing on radiative forcing, top-of-atmosphere (TOA) reflectance, and aerosol optical depth (AOD) retrievals. We characterized soot aging using relative humidity (RH) growth factor functions and modeled fresh and aging soot aggregates using a cluster-cluster aggregation algorithm.

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Meteorological and traffic effects on air pollutants using Bayesian networks and deep learning.

J Environ Sci (China)

June 2025

Department of Civil Engineering, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan 32001, Taiwan, China.

Traffic emissions have become the major air pollution source in urban areas. Therefore, understanding the highly non-stational and complex impact of traffic factors on air quality is very important for building air quality prediction models. Using real-world air pollutant data from Taipei City, this study integrates diverse factors, including traffic flow, speed, rainfall patterns, and meteorological factors.

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A robust likelihood approach to inference for paired multiple binary endpoints data.

J Appl Stat

February 2024

Department of Financial Engineering and Actuarial Mathematics, Soochow University, Taipei City, Taiwan.

We introduce a robust likelihood approach to inference for paired multiple binary endpoints data. One can easily implement the methodology without dealing with the model that incorporates a large number of joint probabilities of no direct relevance to the inference of interest. We present the robust score test statistic for testing the equality of two treatment effects to exemplify the utility and simplicity of the method.

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The structural modification of hole-transporting materials (HTMs) is an effective strategy for enhancing photovoltaic performance in perovskite solar cells (PSCs). Herein, a series of dithienopyran (DTP)-based HTMs (Me-H, Ph-H, CF3-H, CF3-mF, and CF3-oF) is designed and synthesized by substituting different functional groups on the DTP unit and are used fabricating PSCs. In comparison with Me-H having two methyl substituents on the dithienopyrano ring, the Ph-H having two phenyl substituents on the ring exhibits higher PCEs.

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Article Synopsis
  • The study explores a novel hybrid vertical phototransistor (VPT) combining a ZnO transistor with a poly(3-hexylthiophene):[6,6]-phenyl-C-butyric acid methyl ester blend organic photodiode (P3HT:PCBM), focusing on its device mechanism and performance.
  • Preliminary results indicate non-ohmic electron injection between the materials, but the ZnO layer assists in accumulating photogenerated holes, improving electron injection during illumination and enhancing quantum efficiency.
  • The VPT's unique geometry and the ability to modulate electron injection through a gate field allow it to significantly outperform conventional devices, achieving impressive metrics like a 45,917% external
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Capillary zone electrophoresis-immunosubtraction (CZE-IS) is an essential laboratory test in diagnosing plasma cell neoplasms. However, the current interpretation of the test results is subjective. To evaluate CZE-IS in a more precise manner, this study proposed five key indexes, namely sharpness index, light chain index, immunoglobulin G index, immunoglobulin A index, and immunoglobulin M index.

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In this study, bimetallic NiCo nanoparticles (NPs) were encapsulated within the mesopores of carboxylic acid functionalized mesoporous silica (CMS) through the chemical reduction approach. Both NaBH and NHBH were used as reducing agents to reduce the metal ions simultaneously. The resulting composite was used as a catalyst for hydrolysis of ammonia borane (NHBH, AB) to produce H.

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The first search for soft unclustered energy patterns (SUEPs) is performed using an integrated luminosity of 138  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV, collected in 2016-2018 by the CMS detector at the LHC. Such SUEPs are predicted by hidden valley models with a new, confining force with a large 't Hooft coupling. In events with boosted topologies, selected by high-threshold hadronic triggers, the multiplicity and sphericity of clustered tracks are used to reject the background from standard model quantum chromodynamics.

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Clinical features of anti-SAE1 antibody-positive myositis and interstitial lung disease: a multicenter, retrospective study in Taiwan.

Front Immunol

November 2024

Division of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Chang Gung Memorial Hospital, and Chang Gung University, Taoyuan, Taiwan.

Article Synopsis
  • The study investigates the role of anti-SAE1 antibodies in patients with idiopathic inflammatory myopathies (IIMs) and how these antibodies relate to interstitial lung disease (ILD), particularly among Taiwanese individuals.
  • A cohort of 6,496 patients was analyzed, with 70 found to be SAE1 positive; clinical characteristics, diagnoses, and the presence of ILD were evaluated over time.
  • Results showed that strong SAE1 positivity correlated more strongly with IIM and ILD compared to weak positivity, indicating its potential clinical utility in diagnosis.
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Enzyme cascades for in vitro and in vivo FMN prenylation and UbiD (de)carboxylase activation under aerobic conditions.

Methods Enzymol

November 2024

Centre for Environmental Biotechnology, School of Environmental and Natural Sciences, Bangor University, Bangor, United Kingdom; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada. Electronic address:

Microbial carboxylases and decarboxylases play important roles in the global carbon cycle and have many potential applications in biocatalysis and synthetic biology. The widespread family of reversible UbiD-like (de)carboxylases are of particular interest because these enzymes are active against a diverse range of substrates. Several characterized UbiD enzymes have been shown to catalyze reversible (de)carboxylation of aromatic and aliphatic substrates using the recently discovered prenylated FMN (prFMN) cofactor, which is produced by the associated family of UbiX FMN prenyltransferases.

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Cooperative tumor inhibition by CpG-oligodeoxynucleotide and cyclic dinucleotide in head and neck cancer involves T helper cytokine and macrophage phenotype reprogramming.

Biomed Pharmacother

December 2024

Department of Life Sciences, National Central University, Taoyuan, Taiwan; Immunology Research Center, National Health Research Institutes, Miaoli, Taiwan. Electronic address:

Head and neck cancer ranks as the sixth most common cancer worldwide, highlighting the critical need for the development of new therapies to enhance treatment efficacy. The activation of innate immune receptors given their potent immune stimulatory properties aid in the eradication of cancer cells. In this study, we investigated the immune mechanism and anti-tumor function of a Toll-like receptor 9 (TLR9) agonist, CpG-oligodeoxynucleotide-2722 (CpG-2722), in combination with cyclic dinucleotides, which are agonists of stimulator of interferon genes (STING).

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Triphenylamine-Based Y-Shaped Self-Assembled Monolayers for Efficient Tin Perovskite Solar Cells.

Small

January 2025

Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, 1001 Ta-Hseuh Rd., Hsinchu, 300093, Taiwan.

Article Synopsis
  • The study focuses on the synthesis of triphenylamine-based Y-shaped organic sensitizers (TPA-MN, TPA-CA, TPAT-MN, TPAT-CA) to create self-assembled monolayers (SAMs) for improving the efficiency of tin-based perovskite solar cells (TPSCs).
  • A thorough analysis of these SAMs revealed differences in their crystalline and optoelectronic properties, with the device performance ranking showing TPAT-CA achieving the highest power conversion efficiency (PCE) at 8.1%, outperforming the other SAMs.
  • The TPAT-CA SAM exhibited superior characteristics, such as enhanced hole extraction and mobility,
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Unlike traditional multi-step synthetic approaches, we developed a single-step synthesis of versatile π-conjugated building blocks bearing post-functionalizable C-H and C-Br bonds. Direct C-H arylation of 3-bromothiophene with various iodo(hetero)aryls was successfully carried out with good regio- and chemo-selectivity. Under optimized reaction conditions, 20 new compounds were facilely prepared in yields up to 91 %.

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Antimicrobial resistance is one of the most urgent global health threats, especially in the post-pandemic era. Antimicrobial peptides (AMPs) offer a promising alternative to traditional antibiotics, driving growing interest in recent years. dbAMP is a comprehensive database offering extensive annotations on AMPs, including sequence information, functional activity data, physicochemical properties and structural annotations.

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We report a systematic study on the barrier-crossing dynamics of bottom-heavy self-propelled particles (SPPs) over a one-dimensional periodic potential landscape (), which is fabricated on a microgroove-patterned polydimethylsiloxane (PDMS) substrate. From the measured steady-state probability density function (PDF) (;) of the SPPs with different self-propulsion forces , we find that the escape dynamics of slow-rotating SPPs over the periodic potential () can be well described by an activity-dependent potential (;) under the fixed angle approximation. A theoretical model is developed to include the effects of the gravitational-torque-induced alignment on the polar angle and the hydrodynamic wall alignment on the azimuthal angle as well as their influence on the self-propulsion speed .

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