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Characterization and source apportionment of volatile organic compounds in Hong Kong:A 5-year study for three different archetypical sites

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Journal of Environmental Sciences 2025年第5期151卷 424-440页

作者： Yuchen Mai Vincent Cheung Peter K.K.Louie Kenneth Leung Jimmy C.H.Fung Alexis K.H.Lau Donald R.B.lake Dasa Gu Division of Environment and Sustainability The Hong Kong University of Science and TechnologyHong Kong 999077China Environmental Protection Department Hong Kong 999077China Environment and Ecology Bureau Hong Kong 999077China Department of Chemistry University of CaliforniaIrvine 92617USA

Initial success has been achieved in Hong Kong in controlling primary air pollutants,but ambient ozone levels kept increasing during the past three *** organic compounds(VOCs)are important for mitigating ozone pollution as its major *** study analyzed VOC characteristics of roadside,suburban,and rural sites in Hong Kong to investigate their compositions,concentrations,and source *** showthat the TVOC concentrations were 23.05±13.24,12.68±15.36,and 5.16±5.48 ppbv for roadside,suburban,and rural sites between May 2015 to June 2019,*** using Positive Matrix Factorization(PMF)model,six sources were identified at the roadside site over five years:Liquefied petroleum gas(LPG)usage(33%–46%),gasoline evaporation(8%–31%),aged air mass(11%–28%),gasoline exhaust(5%–16%),diesel exhaust(2%–16%)and fuel filling(75–9%).Similarly,six sources were distinguished at the suburban site,including LPG usage(30%–33%),solvent usage(20%–26%),diesel exhaust(14%–26%),gasoline evaporation(8%–16%),aged air mass(4%–11%),and biogenic emissions(2%–5%).At the rural site,four sources were identified,including aged airmass(33%–51%),solvent usage(25%–30%),vehicular emissions(11%–28%),and biogenic emissions(6%–12%).The analysis further revealed that fuel filling and LPG usage were the primary contributors to OFP and OH reactivity at the roadside site,while solvent usage and biogenic emissions accounted for almost half of OFP and OH reactivity at the suburban and rural sites,*** findings highlight the importance of identifying and characterizing VOC sources at different sites to help policymakers develop targeted measures for pollution mitigation in specific areas.

关键词： Volatile organic compounds Positive matrix factorization Source apportionment Ozone formation

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Hepatic artery infusion chemotherapy:A resurgence

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 299-303页

作者： Andrew Kai-Yip Fung Kenneth Siu Ho Chok Department of Surgery The Chinese University of Hong KongPrince of Wales HospitalHong Kong 999077China

In this manuscript,we comment on the article by Zhou et al,who assessed the efficacy of hepatic arterial infusion chemotherapy(HAIC)and its combination strategies for advanced hepatocellular carcinoma(HCC)using network metaanalysis *** focus specifically on the potential advantages and role of HAIC in the treatment algorithm for advanced ***,there remains numerous knowledge gaps before the role of HAIC can be *** is significant heterogeneity of HAIC regimes with difficult interpretation of the clinical ***,there is a lack of direct comparative data between HAIC,systemic chemotherapy,novel immunotherapies and targeted *** underlying biochemical mechanisms that might explain the efficacy of HAIC and its effect on the HCC microenvironment requires further *** the developing era of nanotechnology and targeted drug delivery systems,there is potential for integration of HAIC with novel technologies to effectively treat advanced HCC whilst minimising systemic complications.

关键词： Hepatocellular carcinoma Hepatic artery infusion chemotherapy Immunotherapy Targeted therapy Transarterial chemoembolisation

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he BCM1-EGY1 module balances chlorophyll biosynthesis and breakdown to confer chlorophyll homeostasis in land plants

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Molecular Plant 2025年第1期18卷 76-94页

作者： Dali Fu Hanlin Zhou Bernhard Grimm Peng Wang School of Biological Sciences The University of Hong KongHong Kong SAR 999077China Institute of Biology/Plant Physiology Humboldt-Universität zu BerlinPhilippstrasse13Building 1210115 BerlinGermany State Key Laboratory of Agrobiotechnology The Chinese University of Hong KongHong Kong SAR 999077China

Chlorophyll metabolism has evolved during plant *** strictly light-dependent nature of chlorophyll biosynthesis found in angiosperms requires tight coordination of chlorophyll biosynthesis and breakdown to achieve chlorophyll ***,the specific control mechanisms remain largely ***,we demonstrate that the scaffold protein BALANCE OF CHLOROPHYLL METABOLISM1(BCM1)has co-evolved with the carboxy-terminal domains of specific enzymes involved in chlorophyll biosynthesis and breakdown,including GENOMES UNCOUPLED 4(GUN4)and Mg-dechelatase 1(SGR1).We found that the land plant-specific interaction of BCM1 with the carboxy-terminal domains of GUN4 and SGR1 is indispensable for concurrent stimulation of chlorophyll biosynthesis and suppression of chlorophyll *** land plant-specific carboxy-terminal domain is essential for the membrane docking and turnover of GUN4,whereas it is key for proteolysis of *** importantly,we identified the metallopeptidase Gravitropism-deficient and Yellow-green 1(EGY1)as the proteolytic machinery responsible for BCM1-mediated proteolysis of *** summary,this study reveals the BCM1-EGY1 module has evolved to maintain chlorophyll homeostasis by the post-translational control of the balance between chlorophyll biosynthesis and *** mechanism thus represents an evolutionary response to the metabolic demands imposed on plants in terrestrial environments.

关键词： chlorophyll homeostasis scaffold protein BCM1 proteolytic machinery EGY1 post-translational control

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Recent progress on elemental tellurium and its devices

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Journal of Semiconductors 2025年第1期46卷 91-106页

作者： Jiachi Liao Zhengxun Lai You Meng Johnny C.Ho Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors(College of IntegratedC ircuits)Hunan UniversityChangsha 410082China Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka 8168580Japan State Key Laboratory of Terahertz and Millimeter Waves City University of Hong KongKowloonHong Kong 999077China

The rapid advancement of information technology has heightened interest in complementary devices and *** p-type semiconductors often lack sufficient electrical performance,thus prompting the search for new materials with high hole mobility and long-term *** tellurium(Te),featuring a one-dimensional chiral atomic structure,has emerged as a promising candidate due to its narrow bandgap,high hole mobility,and versatility in industrial applications,particularly in electronics and renewable *** review highlights recent progress in Te nanostructures and related devices,focusing on synthesis methods,including vapor deposition and hydrothermal synthesis,which produce Te nanowires,nanorods,and other *** applications in photodetectors,gas sensors,and energy harvesting devices are discussed,with a special emphasis on their role within the internet of things(IoT)framework,a rapidly growing field that is reshaping our technological *** prospects and potential applications of Te-based technologies are also highlighted.

关键词： elemental tellurium photodetector field-effect transistor gas sensor energy harvesting device

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Efficient photocatalytic reduction of CO_(2)to formate by a molecular noble metal-free system

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Science China Chemistry 2025年第1期68卷 152-156页

作者： Lihua Zhang Lingjing Chen Huatian Shi Yue Wei Gui Chen Tai-Chu Lau School of Environment and Civil Engineering Research Center for Eco-environmental EngineeringDongguan University of TechnologyDongguan 523808China Department of Chemistry and Institute of Molecular Functional Materials City University of Hong KongHong Kong 999077China

Reducing CO_(2)to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse *** present,developing an efficient non-noble metal photo/electrocatalytic system for converting CO_(2)to a specific product beyond CO is still a big ***,we report a new cobalt complex bearing 2,2′-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO_(2)to formate(HCOO^(-)).Turnover number(TON)for HCOO^(-)up to 677 with 99%selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole(BIH)as sacrificial reductant in a CO_(2)-saturated NMP/TEA(v/v,3:1)solution under visible light *** potential electrolysis at-1.41 V(***/Ag Cl)in the presence of 12 mM Et_(3)NHBF_(4)also produced HCOO^(-)with Faradaic efficiency of 39%.Spectroscopic and electrochemical studies suggest that a[CoI-H]species is the key intermediate for CO_(2)reduction.

关键词： photocatalysis noble metal-free CO_(2)reduction formate cobalt hydride

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Ultrahigh Energy and Power Density in Ni-Zn Aqueous Battery via Superoxide-Activated Three-Electron Transfer

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Nano-Micro Letters 2025年第4期17卷 63-76页

作者： Yixue Duan Bolong Li Kai Yang Zheng Gong Xuqiao Peng Liang He Derek Ho School of Mechanical Engineering State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground EngineeringSichuan UniversityChengdu 610065People’s Republic of China Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077People’s Republic of China Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong Science ParkHong Kong 999077People’s Republic of China School of Mechanical Engineering Sichuan UniversityChengdu 610065People’s Republic of China

Aqueous Ni-Zn microbatteries are safe,reliable and inexpensive but notoriously suffer from inadequate energy and power ***,we present a novel mechanism of superoxide-activated Ni substrate that realizes the redox reaction featuring three-electron transfers(Ni↔Ni3+).The superoxide activates the direct redox reaction between Ni substrate and KNiO_(2)by lowering the reaction Gibbs free energy,supported by in-situ Raman and density functional theory *** prepared chronopotentiostatic superoxidation-activated Ni(CPS-Ni)electrodes exhibit an ultrahigh capacity of 3.21 mAh cm^(-2)at the current density of 5 mA cm^(-2),nearly 8 times that of traditional one-electron processes *** under the ultrahigh 200 mA cm^(-2)current density,the CPS-Ni electrodes show 86.4%capacity retention with a Columbic efficiency of 99.2%after 10,000 *** CPS-Ni||Zn microbattery achieves an exceptional energy density of 6.88 mWh cm^(-2)and power density of 339.56 mW cm^(-2).Device demonstration shows that the power source can continuously operate for more than 7 days in powering the sensing and computation intensive practical application of photoplethysmographic waveform *** work paves the way to the development of multi-electron transfer mechanisms for advanced aqueous Ni-Zn batteries with high capacity and long lifetime.

关键词： Superoxide Multiple electron transfer Ni aqueous battery AIoT power source Wearable health monitoring

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Daytime radiative freezing

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Science Bulletin 2025年第1期70卷 29-32页

作者： Yi Zhang Chenglong She Jingjing Chen Kui Lai Keqiao Li Fan Yang Chenxi Wang Baoling Huang Lihua Shen Xiaobo Yin Department of Mechanical Engineering The University of Hong KongHong Kong 999077China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi’an Jiaotong UniversityXi’an 710000China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China Department of Physics The University of Hong KongHong Kong 999077China

While modern refrigerators can easily produce ice at any time,Ancient Persians were known to harvest ice from shallow pools without such *** ice would form on clear nights even when the ambient temperature remained above freezing[1].The nocturnal ice formation occurs because the water,facing the sky,radiates heat to the cold expanse of space through the transparent atmospheric window between 8 to 13μm[2,3].As a result,the temperature of the water could drop below the ambient ***,achieving daytime ice-making under the sunshine remains a captivating and challenging pursuit.

关键词： temperature. freezing ambient

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Prognostic factors for acute central retinal artery occlusion treated with hyperbaric oxygen:The Hong Kong study report number five

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World Journal of Methodology 2025年第2期15卷 117-124页

作者： Sunny Chi Lik Au Steffi Shing Yee Chong Department of Ophthalmology Tung Wah Eastern HospitalHong Kong 999077China Department of Ophthalmology Pamela Youde Nethersole Eastern HospitalHong Kong 999077China

BACKGROUND Central retinal artery occlusion(CRAO)is a potentially blinding disease,and hyperbaric oxygen therapy(HBOT)is becoming increasingly popular with the support of scientific *** the presence of various acute management measures,there is no clear evidence on the gold standard treatment for *** To identify factors and imaging parameters associated with good visual outcome,which guide ophthalmologists in the triage of CRAO patients for *** Patients who suffered from CRAO and had a symptom onset≤6 h were recruited for a course of HBOT in a tertiary hospital after failing bedside *** demographics,onset time,CRAO eye parameters,and past medical history were prospectively *** outcomes after HBOT were also *** A total of 26 patients were included;the female-to-male ratio was 1:1.6,and the mean age was 67.5 years±13.3 years(range 44–89 years).The mean duration of follow-up and mean visual acuity(VA)improvement were 10.0 mo±5.3 mo and 0.48 logarithm of minimal angle of resolution(logMAR)±0.57 logMAR(approx-imately 9 letters in ETDRS)(P=0.0001,Z=-3.67),*** 1 mm zone of central macular thickness(CMT)on optical coherence tomography was not associated with VA changes(P=0.119);however,the 1-to-3 mm circular rim of CMT was fairly associated(P=0.02,Spearman's coefficient=0.45).Complete retinal perfusion time during fundus fluorescein angiography(FFA)was mode-rately associated(P=0.01,Spearman's coefficient=0.58)with visual outcome.

关键词： Central retinal artery occlusion Fundus fluorescein angiography Hyperbaric oxygen therapy Optical coherence tomography Stroke

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Clinical utility of glycated albumin and 1,5-anhydroglucitol in the screening and prediction of diabetes:A multi-center study

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World Journal of Diabetes 2025年第4期16卷 178-188页

作者： Kam-Ching Ku Junda Zhong Erfei Song Carol Ho-Yi Fong Karen Siu-Ling Lam Aimin Xu Chi-Ho Lee Chloe Yu-Yan Cheung Cheung Department of MedicineUniversity of Hong KongHong Kong 999077China State Key Laboratory of Pharmaceutical Biotechnology University of Hong KongHong Kong 999077China Guangdong-Hong Kong Joint Institute of Metabolic Medicine University of Hong KongHong Kong 999077China

BACKGROUND Despite being the gold standard,the use of glycated hemoglobin(HbA1c)and fasting plasma glucose(FPG)for diagnosing dysglycemia is *** particular,a low level of agreement between HbA1c and FPG in detecting prediabetes and diabetes has led to difficulties in clinical *** albumin(GA)and 1,5-anhydroglucitol(1,5-AG)may potentially serve as biomarkers for the detection and prediction of diabetes,as well as glycemic *** To explore the diagnostic performance of GA and 1,5-AG for screening dysglycemia;assess whether they can be used for glycemic monitoring in Chinese morbidly-obese patients;and examine their predictive ability for incident diabetes in a Chinese community-based *** GA and 1,5-AG concentrations were measured in 462 morbidly-obese patients from the Obese Chinese Cohort(OCC).A sub-group of diabetes subjects(n=24)was prospectively followed-up after bariatric *** between baseline and post-surgery biomarker values were converted to percentage change from baseline to assess the response to glycemic *** ability of the biomarkers was assessed in 132 incident diabetes cases and 132 matched non-diabetes controls in the community-based Cardiovascular Risk Factor Prevalence Study(CRISPS).A prediction model was developed and compared with clinical models based on conventional risk *** GA exhibited an excellent diagnostic value with an area under the receiver operating characteristic curve(AUC)of 0.919(95%CI:0.884-0.955)for identifying diabetes and a high agreement in the classification of diabetes with both FPG and HbA1c in the *** demonstrated the fastest response to glycemic *** CRISPS,the‘B3A’prediction model,which consisted of body mass index(BMI)and 3 biomarkers(HbA1c,GA and 1,5-AG),achieved a comparable predictive value[AUC(95%CI):0.793(0.744-0.843)]to that of a clinical model comprising BMI,HbA1c,FPG and 2-hour glucose(2hG)[AUC(95%CI):0.783(0.733-0.834)

关键词： Diabetes Biomarkers Prediction Glycated albumin 1,5-anhydroglucitol

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全球价值链嵌入影响流通业绿色全要素生产率的作用机理

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商业经济研究 2025年第1期 32-35页

作者：付燕语黎云龙香港岭南大学中国香港999077

本文基于我国2013-2022年省级面板数据,通过双重固定效应模型检验全球价值链嵌入与流通业绿色全要素生产率的关系。结果发现:全球价值链嵌入显著促进流通业绿色全要素生产率提升;全球价值链嵌入通过规模提升效应、流通技术提高效应促进... 详细信息

本文基于我国2013-2022年省级面板数据,通过双重固定效应模型检验全球价值链嵌入与流通业绿色全要素生产率的关系。结果发现:全球价值链嵌入显著促进流通业绿色全要素生产率提升;全球价值链嵌入通过规模提升效应、流通技术提高效应促进流通业绿色全要素生产率提升。因此,建议政府积极推动流通业参与全球价值链竞争,加大政府补贴支持流通业技术提高和规模扩大,最终实现流通业绿色全要素生产率的大幅提升。

关键词：全球价值链嵌入流通业绿色全要素生产率规模提升流通技术

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