893 results match your criteria: "PR China. C-MER Dennis Lam & Partners Eye Center[Affiliation]"

Globally, soil contamination with heavy metals (HMs) pose serious threats to soil health, crop productivity, and human health. The present investigation involved synthesis and analysis of biochar with bimetallic combination of iron and magnesium (Fe-Mg-BC). Our study evaluated how Fe-Mg-BC affects the absorption of cadmium (Cd), lead (Pb), and copper (Cu) in spinach (Spinacia oleracea L.

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A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum . This observable is measured in multijet events over the range of - based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 , corresponding to an integrated luminosity of 134 . The results are compared with predictions from Monte Carlo parton-shower event generator simulations, as well as with fixed-order perturbative quantum chromodynamics (pQCD) predictions at next-to-leading-order (NLO) accuracy obtained with different parton distribution functions (PDFs) and corrected for nonperturbative and electroweak effects.

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A study of the anomalous couplings of the Higgs boson to vector bosons, including -violation effects, has been conducted using its production and decay in the WW channel. This analysis is performed on proton-proton collision data collected with the CMS detector at the CERN LHC during 2016-2018 at a center-of-mass energy of 13 TeV, and corresponds to an integrated luminosity of 138 . The different-flavor dilepton final state is analyzed, with dedicated categories targeting gluon fusion, electroweak vector boson fusion, and associated production with a W or Z boson.

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Bottom Contact Engineering for Ambient Fabrication of >25% Durable Perovskite Solar Cells.

Adv Mater

October 2024

School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China.

The bottom contact in perovskite solar cells (PSCs) is easy to cause deep trap states and severe instability issues, especially under maximum power point tracking (MPPT). In this study, sodium gluconate (SG) is employed to disperse tin oxide (SnO) nanoparticles (NPs) and regulate the interface contact at the buried interface. The SG-SnO electron transfer layer (ETL) enabled the deposition of pinhole-free perovskite films in ambient air and improved interface contact by bridging effect.

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Study of transient absorption spectroscopy of a D-π-A structure aggregation-induced emission luminogen and its photodynamic therapy application.

J Mater Chem B

August 2024

Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong, China.

Article Synopsis
  • Photodynamic therapy (PDT) is a noninvasive cancer treatment that uses photosensitizers to enhance therapeutic effects, and the study focuses on a newly synthesized photosensitizer called DTCSPP.
  • DTCSPP has a unique donor-π-acceptor structure, shows aggregation-induced emission properties, and is effective in targeting mitochondria, making it suitable for cancer treatment.
  • The research reveals that DTCSPP can generate reactive oxygen species and stimulate cell death processes in cancer cells, highlighting its potential as a valuable tool in improving anticancer therapies.
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Comparison, optimization and antioxidant activity of ultrasound-assisted natural deep eutectic solvents extraction and traditional method: A greener route for extraction of flavonoid from Moringa oleifera Lam. leaves.

Ultrason Sonochem

October 2024

School of Veterinary Medicine, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China. Electronic address:

To develop an environmentally sustainable and efficient extraction method for flavonoids from Moringa oleifera Lam. (M. oleifera) leaves, natural deep eutectic solvents (NADES) with ultrasound-assisted extraction was utilized in this study.

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A search for and production in the final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton-proton collisions corresponding to an integrated luminosity of 133 collected at a center-of-mass energy of 13 with the CMS detector at the CERN LHC. The analysis introduces several novel techniques for deriving and validating a multi-dimensional background model based on control samples in data.

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Article Synopsis
  • The study aimed to determine how the timing of initial antibiotic treatment affects mortality rates in hospital patients with sepsis.
  • It analyzed data from 42 studies involving nearly 191,000 patients, focusing on the correlation between antibiotic administration timing and patient outcomes.
  • Results indicated that administering antibiotics within 3-6 hours of sepsis recognition significantly reduced the risk of death compared to later administration, highlighting the urgency of early treatment.
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Objective: To assess the fluoride and silver ion release of glass ionomer cement (GIC) restorations, including conventional GIC (CGIC) and resin-modified GIC (RMGIC) restorations, with 38 % silver diamine fluoride (SDF) solution dentin pretreatment.

Methods: Eighty dentin blocks were allocated into 4 groups and restored with SDF+CGIC, CGIC, SDF+RMGIC and RMGIC, respectively. Each block was stored in deionized water at 37 °C for 2 years.

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Insight investigation on both edible pulps and inedible parts involving inflorescence axis and shreds of Artocarpus heterophyllus Lam were carried out, a total of 98 VOCs and 201 masses were identified by the combination of HS-SPME-GC-MS and PTR-TOF-MS. Among them, according to the consistency of OAV and results of VIP > 1, p < 0.05, compounds methyl isovalerate (A2), 3-methylbutyl acetate (A5) and octanoic acid, ethyl ester (A21) were recognized as aroma markers to distinguish the pulps, shreds and inflorescence axis.

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Tool to Resolve Distortions in Elemental and Isotopic Imaging.

J Am Chem Soc

July 2024

Department of Chemistry, The University of Hong Kong, Pok Fu Lam, Hong Kong 999077, P. R. China.

Nanoscale secondary ion mass spectrometry (NanoSIMS) makes it possible to visualize elements and isotopes in a wide range of samples at a high resolution. However, the fidelity and quality of NanoSIMS images often suffer from distortions because of a requirement to acquire and integrate multiple image frames. We developed an optical flow-based algorithm tool, NanoSIMS Stabilizer, for all-channel postacquisition registration of images.

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Comparative Efficacy of Omega-3 Fatty Acid with Other Interventions for Depression in Children and Adolescents: A Systematic Review and Network Meta-Analysis.

J Child Adolesc Psychopharmacol

September 2024

Key Laboratory of Cognition and Personality, Faculty of Psychology, Ministry of Education, Southwest University, Chongqing, P. R. China.

The administration of omega-3 polyunsaturated fatty acid supplements is recommended as an adjuvant therapy for adults diagnosed with major depressive disorder. The evaluation of replicated data in combination treatment with omega-3 has been extensively conducted in adults over the past decade. However, the generalizability of these findings to pediatric groups is still uncertain.

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Article Synopsis
  • * This study used a vertebral landmark extraction method and a Feedforward Neural Network (FNN) to predict scoliosis progression in 79 AIS patients, achieving a mean absolute error of 1.5 degrees in intervertebral angle progression and a strong correlation of 0.86 with predicted Cobb angles.
  • * The FNN showed high accuracy (0.85) in classifying different Cobb angle ranges, indicating its potential for enhancing tailored treatments, although addressing issues like over-fitting could further improve results.
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Multiple Chirality Switching of a Dye-Grafted Helical Polymer Film Driven by Acid & Base.

Angew Chem Int Ed Engl

September 2024

Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, 999077, Hong Kong, P. R. China.

A stimuli-responsive multiple chirality switching material, which can regulate opposed chiral absorption characteristics, has great application value in the fields of optical modulation, information storage and encryption, etc. However, due to the rareness of effective functional systems and the complexity of material structures, developing this type of material remains an insurmountable challenge. Herein, a smart polymer film with multiple chirality inversion properties was fabricated efficiently based on a newly-designed acid & base-sensitive dye-grafted helical polymer.

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Aggregative Luminescence from CsPbBr Perovskite Precursors.

Angew Chem Int Ed Engl

August 2024

Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Kowloon, 999077, Hong Kong, P. R. China.

Understanding the properties of the precursor can provide deeper insight into the crystallization and nucleation mechanisms of perovskites, which is vital for the solution-process device performance. Herein, we conducted a detailed investigation into the photophysics properties of CsPbBr precursors in a broad concentration and various solvents. The precursor transformed from the solution state into the colloidal state and exhibited aggregation-induced emission character as the concentration increased.

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A new class of amphiphilic tetradentate platinum(ii) Schiff base complexes has been designed and synthesized. The self-assembly properties by exploiting the potential Pt⋯Pt interactions of amphiphilic platinum(ii) Schiff base complexes in the solution state have been systematically investigated. The presence of Pt⋯Pt interactions has further been supported by computational studies and non-covalent interaction (NCI) analysis of the dimer of the complex.

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Angela Casini (Technical University of Munich, Germany), Hui Chao (Sun Yat-Sen University, China), Hongzhe Sun (University of Hong Kong, China), and Christopher J. Chang (University of California, Berkeley, United States) introduce the themed collection on 'Chemical biology of metals'.

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A combined experimental and computational study of ligand-controlled Chan-Lam coupling of sulfenamides.

Nat Commun

June 2024

Research Center for Chemical Biology and Omics Analysis, Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Shenzhen, Guangdong, P. R. China.

Article Synopsis
  • The study focuses on the unique properties of sulfenamides and explores a selective method for creating N-arylated sulfenamides through a Chan-Lam coupling.
  • A specialized pybox ligand plays a crucial role in ensuring that the reaction favors the formation of C-N bonds over C-S bonds by preventing the sulfenamides from binding too tightly to the copper catalyst.
  • Experimental techniques like UV-Vis and EPR are used to confirm the reaction intermediates, while computational studies indicate that the reaction is favored both kinetically and thermodynamically.
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Exciting Bacteria to a Hypersensitive State for Enhanced Aminoglycoside Therapy by a Rationally Constructed AIE Luminogen.

Adv Healthc Mater

September 2024

Department of Chemistry, Department of Chemical and Biological Engineering and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong, P. R. China.

The diminishing effectiveness of existing aminoglycoside antibiotics (AGs) compels scientists to seek new approaches to enhance the sensitivity of current AGs. Despite ongoing efforts, currently available approaches remain restricted. Herein, a novel strategy involving the rational construction of an aggregation-induced-emission luminogen (AIEgen) is introduced to significantly enhance Gram-positive bacteria's susceptibility to AGs.

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Retraction notice to "Combined metabolic activators improve metabolic functions in the animal models of neurodegenerative diseases" [Life Sci. 314 (2023) 121325].

Life Sci

July 2024

Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden; Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, United Kingdom.

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Tourism efficiency has become an important role in promoting tourism competitiveness and driving sustainable development. It is particularly important to identify and agnalyze the factors and mechanisms that affect efficiency. This paper firstly evaluates the tourism efficiency of 11 coastal provinces regions in China from 2010 to 2020 by using the DEA-BBC model that includes undesirable outputs.

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Since its discovery in 1965, our understanding of the hepatitis B virus (HBV) replication cycle and host immune responses has increased markedly. In contrast, our knowledge of the molecular biology of hepatitis delta virus (HDV), which is associated with more severe liver disease, is less well understood. Despite the progress made, critical gaps remain in our knowledge of HBV and HDV replication and the mechanisms underlying viral persistence and evasion of host immunity.

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A search for exotic decays of the Higgs boson () with a mass of 125 to a pair of light pseudoscalars is performed in final states where one pseudoscalar decays to two quarks and the other to a pair of muons or leptons. A data sample of proton-proton collisions at corresponding to an integrated luminosity of 138 recorded with the CMS detector is analyzed. No statistically significant excess is observed over the standard model backgrounds.

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Trends in violent offending among people with schizophrenia: A 10-year ecological study.

Psychiatry Res

July 2024

Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha 410011 Hunan, PR China. Electronic address:

Article Synopsis
  • * A total of 2,093 individuals with schizophrenia committed violent crimes, with 65.6% of these cases deemed not criminally responsible due to their mental disorder (NCRMD).
  • * The research finds a decline in violent offenses during the study period, with positive correlations to general population violence and negative correlations to mental health resources and provincial GDP, suggesting implications for violence prevention strategies.
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Isomerization Engineering of Oxygen-Enriched Carbon Quantum Dots for Efficient Electrochemical Hydrogen Peroxide Production.

Small

September 2024

Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, P. R. China.

Hydrogen peroxide (HO) has emerged as a kind of multi-functional green oxidants with extensive industrial utility. Oxidized carbon materials exhibit promises as electrocatalysts in the two-electron (2e) oxygen reduction reaction (ORR) for HO production. However, the precise identification and fabrication of active sites that selectively yield HO present a serious challenge.

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