433 results match your criteria dongguan city

Surpassing 13% Efficiency for Polythiophene Organic Solar Cells Processed from Nonhalogenated Solvent.

Adv Mater 2021 May 10:e2008158. Epub 2021 May 10.

State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou, 510640, P. R. China.

Benefiting from low cost and simple synthesis, polythiophene (PT) derivatives are one of the most popular donor materials for organic solar cells (OSCs). However, polythiophene-based OSCs still suffer from inferior power conversion efficiency (PCE) than those based on donor-acceptor (D-A)-type conjugated polymers. Herein, a fluorinated polythiophene derivative, namely P4T2F-HD, is introduced to modulate the miscibility and morphology of the bulk heterojunction (BHJ)-active layer, leading to a significant improvement of the OSC performance. Read More

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New atypical manifestations and prognostic factors of Vibrio vulnificus infection: A 10-year retrospective study.

Jpn J Infect Dis 2021 Apr 30. Epub 2021 Apr 30.

Department of Burns, The First Affiliated Hospital, Sun Yat-sen University, China.

Vibrio vulnificus (V. vulnificus) infection is rare but potentially fatal. This study explored the new atypical manifestations and prognostic factors of V. Read More

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Mutations in the sodium channel genes SCN1A, SCN3A, and SCN9A in children with epilepsy with febrile seizures plus(EFS+).

Seizure 2021 Apr 9;88:146-152. Epub 2021 Apr 9.

The Second School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong Province, China; Department of Pediatrics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong Province, China. Electronic address:

Purpose: To explore disease-causing gene mutations of epilepsy with febrile seizures plus (EFS+) in Southern Chinese Han population.

Methods: Blood samples and clinical data were collected from 49 Southern Han Chinese patients with EFS+. Gene screening was performed using whole-exome sequencing and panel sequencing for 485 epilepsy-related genes. Read More

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Proton-assisted calcium-ion storage in aromatic organic molecular crystal with coplanar stacked structure.

Nat Commun 2021 Apr 23;12(1):2400. Epub 2021 Apr 23.

Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.

Rechargeable calcium-ion batteries are intriguing alternatives for use as post-lithium-ion batteries. However, the high charge density of divalent Ca establishes a strong electrostatic interaction with the hosting lattice, which results in low-capacity Ca-ion storage. The ionic radius of Ca further leads to sluggish ionic diffusion, hindering high-rate capability performances. Read More

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Is the Water System Healthy in Urban Agglomerations? A Perspective from the Water Metabolism Network.

Environ Sci Technol 2021 05 23;55(9):6430-6439. Epub 2021 Apr 23.

School of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, China.

Urban agglomerations are a primary spatial focus of socioeconomic activity and inherently include large volumes of embodied water. We have applied the concept of water metabolism health to comprehensively evaluate the overall operation of water systems in urban agglomerations and propose an innovative assessment framework. In particular, we constructed a water metabolism network (WMN) model to simulate a water system in which different cities and sectors are integrated, combining a newly compiled multiregional input-output (MRIO) table of water flow with ecological network analysis (ENA). Read More

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Wireless Self-Powered High-Performance Integrated Nanostructured-Gas-Sensor Network for Future Smart Homes.

ACS Nano 2021 Apr 19;15(4):7659-7667. Epub 2021 Apr 19.

Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.

The accelerated evolution of communication platforms including Internet of Things (IoT) and the fifth generation (5G) wireless communication network makes it possible to build intelligent gas sensor networks for real-time monitoring chemical safety and personal health. However, this application scenario requires a challenging combination of characteristics of gas sensors including small formfactor, low cost, ultralow power consumption, superior sensitivity, and high intelligence. Herein, self-powered integrated nanostructured-gas-sensor (SINGOR) systems and a wirelessly connected SINGOR network are demonstrated here. Read More

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[Biomechanical study of polymethyl methacrylate bone cement and allogeneic bone for strengthening sheep vertebrae].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2021 Apr;35(4):471-476

Department of Orthopedics, SSL Central Hospital of Dongguan City, Affiliated Shilong People's Hospital of Southern Medical University, Dongguan Guangdong, 523326, P.R.China.

Objective: To investigate the feasibility and mechanical properties of polymethyl methacrylate (PMMA) bone cement and allogeneic bone mixture to strengthen sheep vertebrae with osteoporotic compression fracture.

Methods: A total of 75 lumbar vertebrae (L -L ) of adult goats was harvested to prepare the osteoporotic vertebral body model by decalcification. The volume of vertebral body and the weight and bone density before and after decalcification were measured. Read More

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Development and Validation of the Chronic Gastritis Scale Under the System of Quality of Life Instruments for Chronic Diseases QLICD-CG Based on Classical Test Theory and Generalizability Theory.

J Clin Gastroenterol 2021 Apr 13. Epub 2021 Apr 13.

School of Humanities and Management, Research Center for Quality of Life and Applied Psychology, Key Laboratory for Quality of Life and Psychological Assessment and Intervention, Guangdong Medical University, Dongguan School of Public Health, Kunming Medical University The First Affiliated Hospital of Kunming Medical University, Kunming Taian city central hospital, Taian Department of Statistics and Medical Record Management, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.

Background And Aim: Quality of life (QOL) for patients with chronic gastritis (CG) is of interest worldwide and disease-specific instruments are needed for clinical research and practice. This paper focused on the development and validation of the CG scale under the system of Quality of Life Instruments for Chronic Diseases (QLICD-CG) by the modular approach and both classical test theory and generalizability theory.

Methods: The QLICD-CG was developed based on programmed decision procedures including multiple nominal and focus group discussions, in-depth interviews and quantitative statistical procedures. Read More

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Mortality associated with third generation cephalosporin-resistance in Enterobacteriaceae infections: a multicenter cohort study in Southern China.

Expert Rev Anti Infect Ther 2021 Apr 19:1-7. Epub 2021 Apr 19.

Laboratory of Biostatistics, Division of Social Medicine, School of Medicine, University of Crete, Heraklion, Greece.

: Emerging third-generation cephalosporin-resistant (3GCR-EB) pose global healthcare concern. This study assessed the in-hospital mortality attributed to 3GCR-EB.: The study cohort comprised inpatients with community-onset or healthcare-associated infection caused by in three tertiary-care public hospitals in 2017. Read More

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A new horizon in risk stratification of hepatocellular carcinoma by integrating vessels that encapsulate tumor clusters and microvascular invasion.

Hepatol Int 2021 Apr 9. Epub 2021 Apr 9.

Department of Hepatobiliary Oncology of Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China.

Background: Vessels that encapsulate tumor clusters (VETC) is a novel described vascular pattern different from microvascular invasion (MVI) for patients with hepatocellular carcinoma (HCC). The prognostic value of integrating VETC and MVI (VETC-MVI model) in HCC patients after resection remains unclear.

Methods: From January 2013 to December 2016, 498 HCC patients who underwent curative resection were enrolled from five academic centers and stratified into different groups according to their VETC and MVI statuses. Read More

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Identification of novel functional CpG-SNPs associated with Type 2 diabetes and birth weight.

Aging (Albany NY) 2021 Apr 4;13(7):10619-10658. Epub 2021 Apr 4.

Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China.

Genome-wide association studies (GWASs) have identified hundreds of genetic loci for type 2 diabetes (T2D) and birth weight (BW); however, a large proportion of the total trait heritability remains unexplained. The previous studies were generally focused on individual traits and largely failed to identify the majority of the variants that play key functional roles in the etiology of the disease. Here, we aim to identify novel functional loci for T2D, BW and the pleiotropic variants shared between them by performing a targeted conditional false discovery rate (cFDR) analysis that integrates two independent GWASs with summary statistics for T2D ( = 26,676 cases and 132,532 controls) and BW ( = 153,781) which entails greater statistical power than individual trait analyses. Read More

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A Versatile Competitive Coordination Strategy for Tailoring Bioactive Zeolitic Imidazolate Framework Composites.

Small 2021 Apr 6:e2007586. Epub 2021 Apr 6.

Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong, 510640, China.

Zeolitic imidazolate frameworks (ZIFs) serving as platforms for bioactive guest encapsulation have attracted growing attention, yet the tailoring of its architectures and bioactivity remains a major challenge. Herein, a versatile competitive coordination strategy is proposed by using amorphous zinc nucleotide gel as template for step-by-step growth of ZIFs, which enables the tailoring of bioactive ZIF composites under facile conditions. Mechanism investigation reveals that introduced nucleotide determines the hierarchical pore structure and hydrophilicity, leading to customized activity retention and stability of the resultant bioactive ZIF composites. Read More

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Discovery of [Formula: see text] rotation anomaly in topological crystalline insulator SrPb.

Nat Commun 2021 Apr 6;12(1):2052. Epub 2021 Apr 6.

Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China.

Topological crystalline insulators (TCIs) are insulating electronic states with nontrivial topology protected by crystalline symmetries. Recently, theory has proposed new classes of TCIs protected by rotation symmetries [Formula: see text], which have surface rotation anomaly evading the fermion doubling theorem, i.e. Read More

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MiR-203-3p inhibits the oxidative stress, inflammatory responses and apoptosis of mice podocytes induced by high glucose through regulating Sema3A expression.

Open Life Sci 2020 22;15(1):939-950. Epub 2020 Dec 22.

Department of Cardiovascular Medicine and Dongguan Cardiovascular Institute, The Third People's Hospital of Dongguan City, No. 1, Xianglong Road, Shi Long Town, Dongguan, China.

Diabetic nephropathy (DN) is the most serious long-term microvascular complication of diabetes, which mainly causes podocyte injury. Many studies have shown that microRNAs play a vital role in the development of DN. Studies have shown that miR-203-3p is involved in mesangial cell proliferation and apoptosis of DN mice. Read More

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December 2020

Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities.

Materials (Basel) 2021 Mar 7;14(5). Epub 2021 Mar 7.

School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China.

The construction of sponge city is a major green innovation to implement the concept of sustainable development. In this study, the road performance of permeable asphalt concrete (PAC), which displays pronounced water permeability and noise reduction that are favorable for sponge cities, has been improved with a two-fold modification using styrene-butadiene-styrene (SBS) and crumb rubber (CR). Four percent SBS and three different ratios (10%, 15%, and 20%) of CR have been used to modify the virgin asphalt binder. Read More

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MiR-103/miR-107 inhibits enterovirus 71 replication and facilitates type I interferon response by regulating SOCS3/STAT3 pathway.

Biotechnol Lett 2021 Apr 1. Epub 2021 Apr 1.

Department of Pediatrics, Binhaiwan Central Hospital of Dongguan, Dongguan, China.

Background: Enterovirus71 (EV71), the major cause of hand, foot, and-mouth disease (HFMD), has increasingly become a public health challenge. Type I interferons (IFNs) can regulate innate and adaptive immune responses to pathogens. MicroRNAs (miRNAs) play regulatory roles in host innate immune responses to viral infections. Read More

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Short-term effects of ambient temperature and pollutants on the mortality of respiratory diseases: A time-series analysis in Hefei, China.

Ecotoxicol Environ Saf 2021 Jun 24;215:112160. Epub 2021 Mar 24.

Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui 230032, China. Electronic address:

Background: The air pollution has become an important environmental health problem due to its adverse health effect. The objective of this study was to investigate the effects of ambient temperature and pollutants on mortality of respiratory diseases (RD) in Hefei, China, a typical inland city.

Methods: Nonlinear exposure-response dependencies and delayed effects of urban daily mean temperature (DMT) and pollutants were evaluated by distributed lag non-linear models (DLNM). Read More

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PBK/TOPK promotes chemoresistance to oxaliplatin in hepatocellular carcinoma cells by regulating PTEN.

Acta Biochim Biophys Sin (Shanghai) 2021 Apr;53(5):584-592

Department of Clinical Laboratory, SSL Central Hospital of Dongguan City, The Third People's Hospital of Dongguan City, Dongguan 523326, China.

Oxaliplatin (OXA) resistance limits the efficiency of treatment for hepatocellular carcinoma (HCC). Studies have shown that the PDZ-binding kinase (PBK) plays important roles in tumors. However, the role of PBK in HCC is still a problem. Read More

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Development of quantum dot-based fluorescence lateral flow immunoassay strip for rapid and quantitative detection of serum interleukin-6.

J Clin Lab Anal 2021 Mar 24:e23752. Epub 2021 Mar 24.

Department of Intensive Medicine, The Second Affiliated hospital of University of South China, Hengyang, China.

Background: Interleukin-6 (IL-6) is an inflammatory factor that increases rapidly in response to infectious diseases including sepsis. The aim of this study is to develop a quantum dot (QD)-based fluorescence lateral flow immunoassay (LFIA) strip that can rapidly and accurately detect IL-6 levels.

Methods: QD-based LFIA strips were fabricated by conjugating CdSe/ZnS QDs to the IL-6 antibody. Read More

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Bridging Structural Inhomogeneity to Functionality: Pair Distribution Function Methods for Functional Materials Development.

Adv Sci (Weinh) 2021 Mar 22;8(6):2003534. Epub 2021 Jan 22.

Department of Physics City University of Hong Kong Hong Kong 999077 P. R. China.

The correlation between structure and function lies at the heart of materials science and engineering. Especially, modern functional materials usually contain inhomogeneities at an atomic level, endowing them with interesting properties regarding electrons, phonons, and magnetic moments. Over the past few decades, many of the key developments in functional materials have been driven by the rapid advances in short-range crystallographic techniques. Read More

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First Report of Verticillium Wilt of Watermelon Caused by Verticillium dahliae in China.

Plant Dis 2021 Mar 18. Epub 2021 Mar 18.

Hebei Academy of Agricultural and Forestry Sciences, Plant Protection Institute, Baoding, Hebei, China;

Watermelon (Citrullus lanatus T.) is one of the most important economic crops in China. Soil-borne diseases are becoming more and more serious with longer growing seasons and continuous cropping of watermelon in greenhouses. Read More

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Materials, photophysics and device engineering of perovskite light-emitting diodes.

Rep Prog Phys 2021 Apr 12;84(4). Epub 2021 Apr 12.

State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, People's Republic of China.

Here we provide a comprehensive review of a newly developed lighting technology based on metal halide perovskites (i.e. perovskite light-emitting diodes) encompassing the research endeavours into materials, photophysics and device engineering. Read More

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Combined targeting of vascular endothelial growth factor C (VEGFC) and P65 using miR-27b-3p agomir and lipoteichoic acid in the treatment of gastric cancer.

J Gastrointest Oncol 2021 Feb;12(1):121-132

Department of Clinical Laboratory, SSL Central Hospital of Dongguan City, Dongguan Third Clinical Hospital of Guangdong Medical University, Dongguan, China.

Background: Gastric cancer is the second leading cancer-related mortality worldwide and more effective treatment strategies are urgently needed to combat the disease. Using lipoteichoic acid (LTA) and miR-27b-3p agomir, we aimed to assess the efficacy of this combination of therapies in treating gastric cancer.

Methods: The RNA levels of miR-27b-3p, FOXO3, MET, KRAS, vascular endothelial growth factor C (VEGFC), TSC1, and P65 were analyzed by quantified-PCR (Q-PCR) and the cell viability of AGS cells was analyzed by MTT. Read More

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February 2021

Selective Epitaxial Growth of Rh Nanorods on 2H/ Heterophase Au Nanosheets to Form 1D/2D Rh-Au Heterostructures for Highly Efficient Hydrogen Evolution.

J Am Chem Soc 2021 Mar 11;143(11):4387-4396. Epub 2021 Mar 11.

Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China.

Phase engineering of nanomaterials (PEN) enables the preparation of metal nanomaterials with unconventional phases that are different from their thermodynamically stable counterparts. These unconventional-phase nanomaterials can serve as templates to construct precisely controlled metallic heterostructures for wide applications. Nevertheless, how the unconventional phase of templates affects the nucleation and growth of secondary metals still requires systematic explorations. Read More

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Anti-N-methyl-D-aspartate receptor encephalitis following neuromyelitis optica spectrum disorders: a case report.

Neurol Sci 2021 Feb 27. Epub 2021 Feb 27.

Neurology Department, Hebei General Hospital, Shijiazhuang, 050051, Hebei, China.

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February 2021

Prevalence and Risk Factors Associated with Hyperuricemia in the Pearl River Delta, Guangdong Province, China.

Risk Manag Healthc Policy 2021 16;14:655-663. Epub 2021 Feb 16.

Department of Clinical Laboratory, The Second People's Hospital of Zhaoqing, Zhaoqing, Guangdong, 526060, People's Republic of China.

Background: In China, the prevalence of HUA in the Pearl River Delta (PRD) region of Guangdong Province has not been extensively investigated. Therefore, this study investigated the prevalence of HUA and its related factors among people aged 20-99 years in nine cities in the PRD.

Materials And Methods: We selected 6491 health check participants from 9 cities in the PRD and collected participants' anthropometric and biochemical test results for a cross-sectional study. Read More

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February 2021

The timing of continuous renal replacement therapy initiation in sepsis-associated acute kidney injury in the intensive care unit: the CRTSAKI Study (Continuous RRT Timing in Sepsis-associated AKI in ICU): study protocol for a multicentre, randomised controlled trial.

BMJ Open 2021 02 19;11(2):e040718. Epub 2021 Feb 19.

Intensive Care Unit, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China

Introduction: Acute kidney injury (AKI) is one of the most common organ dysfunction in sepsis, and increases the risk of unfavourable outcomes. Renal replacement therapy (RRT) is the predominant treatment for sepsis-associated AKI (SAKI). However, to date, no prospective randomised study has adequately addressed whether initiating RRT earlier will attenuate renal injury and improve the outcome of sepsis. Read More

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February 2021

Silencing of Vangl2 attenuates the inflammation promoted by Wnt5a via MAPK and NF-κB pathway in chondrocytes.

J Orthop Surg Res 2021 Feb 15;16(1):136. Epub 2021 Feb 15.

Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan West Road, Guangzhou, 510055, Guangdong, People's Republic of China.

Background: The Wnt planar cell polarity (PCP) pathway is implicated in osteoarthritis (OA) both in animals and in humans. Van Gogh-like 2 (Vangl2) is a key PCP protein that is required for the orientation and alignment of chondrocytes in the growth plate. However, its functional roles in OA still remain undefined. Read More

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February 2021

Capturing urban heat island formation in a subtropical city of China based on Landsat images: implications for sustainable urban development.

Environ Monit Assess 2021 Feb 15;193(3):130. Epub 2021 Feb 15.

Faculty of Social Sciences and Humanities, Rajarata University of Sri Lanka, Mihintale, 50300, Sri Lanka.

Land use/cover change is the main driving force of urban expansion which influences human-environment interactions. Generally, the formation of urban heat islands (UHIs) can be referred to as a negative "by-product" of urbanization. In the context of rapid urbanization, the present paper aims to capture the landscape changes and three patterns of urban expansion (i. Read More

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February 2021

Network analysis of population flow among major cities and its influence on COVID-19 transmission in China.

Cities 2021 May 5;112:103138. Epub 2021 Feb 5.

Northeast Forestry University, School of Civil Engineering, 26 Hexing Road, Harbin, China.

Large-scale and diffuse population flow amplifies the localized COVID-19 outbreak into a widespread pandemic. Network analysis provides a new methodology to uncover the topology and evolution of the population flow and understand its influence on the early dynamics of COVID-19 transmission. In this paper, we simulated 42 transmission scenarios to show the distribution of the COVID-19 outbreak across China. Read More

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