373 results match your criteria: "The National University of Singapore[Affiliation]"

1D Flat Bands in Phosphorene Nanoribbons with Pentagonal Nature.

Adv Mater

December 2024

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.

Materials with flat bands can serve as a promising platform to investigate strongly interacting phenomena. However, experimental realization of ideal flat bands is mostly limited to artificial lattices or moiré systems. Here, a general way is reported to construct 1D flat bands in phosphorene nanoribbons (PNRs) with a pentagonal nature: penta-hexa-PNRs and penta-dodeca-PNRs, wherein the corresponding 1D flat bands are directly verified by using angle-resolved photoemission spectroscopy.

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Explanatory circles.

Stud Hist Philos Sci

December 2024

The National University of Singapore, 3 Arts Link, Block AS3, #05-22, Singapore, 117570, Singapore. Electronic address:

Roughly put, explanatory circles - if any exist - would be propositions such that (i) each explains the next, and (ii) the last explains the first. In this paper, I give two arguments for the view that there are explanatory circles. The first argument appeals to general relativistic worlds in which time is circular.

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The recent pandemic spurred interest in innovative design for clinical trials. In particular, constraints on the public's ability to gather led to an increase in remote or decentralized clinical trials (DCTs). DCTs present an opportunity to extend the benefits of research to underserved populations, decrease burdens, increase access to trials, and fill knowledge gaps surrounding rare conditions, though they are not without their own unique challenges and risks.

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Combating Fungal Infections and Resistance with a Dual-Mechanism Luminogen to Disrupt Membrane Integrity and Induce DNA Damage.

J Am Chem Soc

November 2024

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.

Antifungal drug resistance is a critical concern, demanding innovative therapeutic solutions. The dual-targeting mechanism of action (MoA), as an effective strategy to reduce drug resistance, has been validated in the design of antibacterial agents. However, the structural similarities between mammalian and fungal cells complicate the development of such a strategy for antifungal agents as the selectivity can be compromised.

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The biomechanics of turgor pressure.

Curr Biol

October 2024

Department of Biological Sciences, The National University of Singapore, Singapore 117543, Singapore; Mechanobiology Institute, The National University of Singapore, Singapore 117543, Singapore. Electronic address:

If you ever forget to water your houseplant, you may find its leaves getting soft and droopy - if you water it again in time, the leaves may stiffen, spring back up, and resist gravity. During this recovery, plant cells absorb water and build up an intracellular pressure, called turgor pressure, similar to inflating a balloon. Turgor pressure is an intrinsic component of plant physiology, and its biomechanical role as the 'hydroskeleton' is generally appreciated either statically in structural stability, like leaves resisting gravity, or dynamically in rapid motions, like Venus flytrap snapping, Mimosa closing, or stomatal opening.

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Microstructure, mechanical, in vitro and in vivo behavior of extruded Mg alloys with varying Zn/Gd ratios, Mg-2Gd-2Zn-0.5Zr (Zn/Gd = 1), Mg-2Gd-6Zn-0.5Zr (Zn/Gd = 3), and Mg-10Gd-1Zn-0.

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Rational Design of Fluorinated 2D Polymer Film Based on Donor-Accepter Architecture toward Multilevel Memory Device for Neuromorphic Computing.

Adv Mater

September 2024

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, P. R. China.

Article Synopsis
  • - The study focuses on developing a fluorine-containing 2D polymer film (F-2DP) to improve charge transport in organic electronics, addressing challenges in synthesis and material availability.
  • - A new polar molecule is created and incorporated into the F-2DP, enhancing its crystallinity and enabling efficient charge transport, resulting in a device that exhibits multilevel memory behavior.
  • - The device demonstrates ternary memory behavior with distinct resistance states and accuracy in neuromorphic computing, indicating strong potential for future technology applications in a post-Moore era.
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Immobile polyanionic backbone enables a 900-μm-thick electrode for compact energy storage with unprecedented areal capacitance.

Natl Sci Rev

August 2024

Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, National Industry-Education Integration Platform of Energy Storage, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China.

Article Synopsis
  • Thickening electrodes enhances the amount of active components, boosting energy density in energy storage cells.
  • However, thicker electrodes increase ion transport resistance, creating a trade-off with electrochemical performance.
  • The study introduces a method using polyanionic backbones in gel electrolytes to improve ion transport in thick electrodes, achieving outstanding capacitances and potentially solving issues of energy density in supercapacitors and other energy devices.
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Background: Adjustment and stress-related disorders are prevalent among psychiatric service users. Despite their prevalence, little is known about their prognosis. To reduce that gap, the present article documents the service use and diagnostic outcomes of people with adjustment or stress-related disorders presenting at Singapore's largest psychiatric emergency department.

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van der Waals heterojunctions based on transition-metal dichalcogenides (TMDs) offer advanced strategies for manipulating light-emitting and light-harvesting behaviors. A crucial factor determining the light-material interaction is in the band alignment at the heterojunction interface, particularly the distinctions between type-I and type-II alignments. However, altering the band alignment from one type to another without changing the constituent materials is exceptionally difficult.

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Article Synopsis
  • Managing coastal wetlands is an effective way to lower greenhouse gas levels and support the United Nations Sustainable Development Goals.
  • Blue carbon projects focus on ecosystems like mangroves, saltmarshes, and seagrass to enhance carbon storage and reduce emissions, but tidal freshwater and other similar wetlands also hold significant potential.
  • The article argues for considering all tidal-influenced wetlands as blue carbon ecosystems, promoting their protection and restoration to combat emissions while boosting biodiversity and providing additional benefits.
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Regulating Metal Centers of MOF-74 Promotes PEO-Based Electrolytes for All-Solid-State Lithium-Metal Batteries.

ACS Appl Mater Interfaces

April 2024

School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China.

Poly(ethylene oxide) (PEO)-based electrolytes have been extensively studied for all-solid-state lithium-metal batteries due to their excellent film-forming capabilities and low cost. However, the limited ionic conductivity and poor mechanical strength of the PEO-based electrolytes cannot prevent the growth of undesirable lithium dendrites, leading to the failure of batteries. Metal-organic frameworks (MOFs) are functional materials with a periodic porous structure that can improve the electrochemical performance of PEO-based electrolytes.

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Tools to implement measurement-based care (MBC) in the treatment of opioid use disorder (OUD): toward a consensus.

Addict Sci Clin Pract

February 2024

Center for Clinical Trials Network, National Institute on Drug Abuse, National Institutes of Health, 11601 Landsdown Street (3WF), Bethesda, MD, 20892, USA.

Background: The prevalence and associated overdose death rates from opioid use disorder (OUD) have dramatically increased in the last decade. Despite more available treatments than 20 years ago, treatment access and high discontinuation rates are challenges, as are personalized medication dosing and making timely treatment changes when treatments fail. In other fields such as depression, brief measures to address these tasks combined with an action plan-so-called measurement-based care (MBC)-have been associated with better outcomes.

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Rationale: There is significant practice variation in acute paediatric asthma, particularly severe exacerbations. It is unknown whether this is due to differences in clinical guidelines.

Objectives: To describe and compare the content and quality of clinical guidelines for the management of acute exacerbations of asthma in children between geographic regions.

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Powdery hexagonal boron nitride (h-BN), as an important material for electrochemical energy storage, has been typically synthesized in bulk and one/two-dimensional (1/2D) nanostructured morphologies. However, until now, no method has been developed to synthesize powdery three-dimensional (3D) h-BN. This work introduces a novel NaCl-glucose-assisted strategy to synthesize micron-sized 3D h-BN with a honeycomb-like structure and its proposed formation mechanism.

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Confinement of ionomer for electrocatalytic CO reduction reaction via efficient mass transfer pathways.

Natl Sci Rev

February 2024

School of Chemical Engineering and Technology, Key Laboratory for Green Chemical Technology of the Ministry of Education, Tianjin University, Tianjin300072, China.

Gas diffusion electrodes (GDEs) mediate the transport of reactants, products and electrons for the electrocatalytic CO reduction reaction (CORR) in membrane electrode assemblies. The random distribution of ionomer, added by the traditional physical mixing method, in the catalyst layer of GDEs affects the transport of ions and CO. Such a phenomenon results in elevated cell voltage and decaying selectivity at high current densities.

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The EORTC QLU-C10D: the Hong Kong valuation study.

Eur J Health Econ

July 2024

Division of Psychiatry I, Department of Psychiatry, Psychotherapy and Psychosomatics, Medical University of Innsbruck, Innsbruck, Austria.

Objective: The EORTC QLU-C10D is a new preference-based measure derived from the EORTC QLQ-C30. Country-specific value sets are required to support the cost-utility analysis of cancer-related interventions. This study aimed to generate an EORTC QLU-C10 value set for Hong Kong (HK).

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A copper-iodide cluster microcube-based X-ray scintillator.

Light Sci Appl

September 2023

Joint School of the National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, 350207, Fuzhou, China.

Newly developed copper-iodide cluster microcubes offer a solution to the issues commonly faced by powder scintillation screens. These problems include inadequate scintillation performance and significant light scattering, resulting in poor image quality. With the advent of monodisperse copper-iodide cluster microparticle scintillators, efficient and long-term stable scintillation is achieved, while ensuring biocompatibility.

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Objectives: The blaZ gene encodes penicillinase, which inactivates penicillin. As there were reports on suboptimal sensitivity for the penicillin zone-edge test, a phenotypic method for blaZ detection, we investigated treatment outcomes in patients with penicillin-susceptible Staphylococcus aureus (PSSA) bacteraemia (phenotypically negative for penicillinase), subjecting isolates to molecular testing for blaZ retrospectively.

Patients And Methods: A retrospective cohort study was conducted on 121 patients with a first episode of PSSA bacteraemia from 1 January 2012 to 31 October 2015 at Tan Tock Seng Hospital (TTSH), Singapore.

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Background: Color matching is a critically important part of, and by far, also the most challenging aspect of producing esthetic silicone prosthesis. There is a knowledge gap in the literature and a lack of opportunities for training in the expertise, particularly regarding color-matching techniques.

Objective: This article details a color-matching technique that is able to achieve life-like coloration in esthetic prosthesis.

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We cannot erase Syrians' suffering with "solidarity" and political infighting.

Lancet

March 2023

Syria Research Group, co-hosted by the London School of Hygiene & Tropical Medicine and the National University of Singapore School of Public Health, Singapore; Department of Global Health and Development, London School of Hygiene & Tropical Medicine, London, WC1H 9SH, UK; Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore.

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Heart Failure and Multimorbidity in Asia.

Curr Heart Fail Rep

February 2023

Saw Swee Hock School of Public Health, The National University of Singapore (NUS), 12 Science Drive 2, Singapore, #10-01117549, Singapore.

Purpose Of The Review: Multimorbidity, the presence of two or more comorbidities, is common in patients with heart failure (HF) and worsens clinical outcomes. In Asia, multimorbidity has become the norm rather than the exception. Therefore, we evaluated the burden and unique patterns of comorbidities in Asian patients with HF.

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Impact of a Bedside Activity Device on the Functional Status of Hospitalized Older Adults: A Randomized Controlled Trial.

Am J Nurs

March 2023

Peijin Esther Monica Fan , Joshua Kenneth Louis , Xin Yi Cindy Lim , Sarasuathi Gloria Encio Subramaniam , Jason Phil Seow , Fazila Aloweni , Darshini Devi Rajasegeran , and Shin Yuh Ang are nurses at Singapore General Hospital. Cheng Chia Hsiang is a physiotherapist, Shamala Thilarajah is a principal physiotherapist, and Hwee Kuan Ong is a senior principal physiotherapist at Singapore General Hospital. Nur Liyana Agus is the senior associate clinical research coordinator at Singapore General Hospital. Premarani Kannusamy is an associate professor at the National University of Singapore. This study was funded by a Singapore General Hospital Patient Safety Grant (FY18PSG008). The authors acknowledge Tan U-Xuan, PhD, and Yuen Chau, PhD, at Singapore University of Technology and Design for conceptualization of the bedside activity device. Contact author: Peijin Esther Monica Fan, . The authors have disclosed no potential conflicts of interest, financial or otherwise.

Background: Older adults may have difficulty maintaining their functional capabilities during hospitalization. This pilot study aimed to investigate the impact of a bedside activity device on the functional status of hospitalized older adults.

Methods: For this single-site randomized controlled trial, 48 participants were recruited between July 2019 and March 2021.

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The COVID-19 continues to take its toll on human life. Even though to a less threatening extent, and insignificant to some, noise turns out to be one of its consequences without consensus. While individuals experience multiple restrictions and restrain from exuberant activities by spending most of their time at home, reducing public transportation and personal vehicles, overall, they end up reduce anthropogenic noise pressure.

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