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| 1 | Emission properties of nanolasers during the transition to lasing显示文摘This review addresses ongoing discussions involving nanolaser experiments,particularly those related to thresholdless lasing or few-emitter devices.A quantum-optical(quantum-mechanical active medium and radiation field)theory is used to examine the emission properties of nanolasers under different experimental configurations.The active medium is treated as inhomogeneously broadened semiconductor quantum dots embedded in a quantum well,where carriers are introduced via current injection.Comparisons are made between a conventional laser and a nanolaser with a spontaneous emission factor of unity,as well as a laser with only a few quantum dots providing the gain.It is found that the combined exploration of intensity,coherence time,photon autocorrelation function and carrier spectral hole burning can provide a unique and consistent picture of nanolasers in the new regimes of laser operation during the transition from thermal to coherent emission.Furthermore,by reducing the number of quantum dots in the optical cavity,a clear indication of non-classical photon statistics is observed before the single-quantum-dot limit is reached. | Weng W Chow Frank Jahnke Christopher Gies | 2014 | Light(Science & Applications)2014，3，1： | 5 |
| 2 | Cell cycle-related kinase reprograms the liver immune microenvironment to promote cancer metastasis显示文摘The liver is an immunologically tolerant organ and a common metastatic site of multiple cancer types.Although a role for cancer cell invasion programs has been well characterized,whether and how liver-intrinsic factors drive metastatic spread is incompletely understood.Here,we show that aberrantly activated hepatocyte-intrinsic cell cycle-related kinase(CCRK)signaling in chronic liver diseases is critical for cancer metastasis by reprogramming an immunosuppressive microenvironment.Using an inducible liverspecific transgenic model,we found that CCRK overexpression dramatically increased both B16F10 melanoma and MC38 colorectal cancer(CRC)metastasis to the liver,which was highly infiltrated by polymorphonuclear-myeloid-derived suppressor cells(PMNMDSCs)and lacking natural killer T(NKT)cells.Depletion of PMN-MDSCs in CCRK transgenic mice restored NKT cell levels and their interferon gamma production and reduced liver metastasis to 2.7% and 0.7%(metastatic tumor weights)in the melanoma and CRC models,respectively.Mechanistically,CCRK activated nuclear factor-kappa B(NF-κB)signaling to increase the PMN-MDSC trafficking chemokine C-X-C motif ligand 1(CXCL1),which was positively correlated with liver-infiltrating PMN-MDSC levels in CCRK transgenic mice.Accordingly,CRC liver metastasis patients exhibited hyperaaivation of hepatic CCRK/NF-κB/CXCL1 signaling,which was associated with accumulation of PMN-MDSCs and paucity of NKT cells compared to healthy liver transplantation donors.In summary,this study demonstrates that immunosuppressive reprogramming by hepatic CCRK signaling undermines antimetastatic immunosurveillance.Our findings offer new mechanistic insights and therapeutic targets for liver metastasis intervention. | Xuezhen Zeng Jingying Zhou Zhewen Xiong Hanyong Sun Weiqin Yang Myth T.S.Mok Jing Wang Jingqing Li Man Liu Wenshu Tang Yu Feng Hector Kwong-Sang W ang Shun-Wa Tsang King-Lau Chow Philip Chun Yeung John Wong Paul Bo-San Lai Anthony Wing-Hung Chan Ka Fai To Stephen Lam Chan Qiang Xia Jing Xue Xiao Chen Jun Yu Sui Peng Joseph Jao-Yiu Sung Ming Kuang Alfred Sze-Lok Cheng | 2021 | Cellular & Molecular Immunology2021，18，4： | 5 |
| 3 | Practice of breast self-examination among high risk Chinese women in Hong Kong显示文摘The incidence of breast cancer in Hong Kong is increasing and breast self examination (BSE) as a screening tool is becoming more popular, especially among first degree relatives (FDR) of breast cancer victims BSE may be more applicable to Chinese women as their breast size is smaller This study explores the BSE practice in this group of women Methods A cross sectional study was conducted by sending questionnaires to 330 FDR of breast cancer patients treated in the Department of Surgery, University of Hong Kong BSE behavior was studied with respect to its frequency, awareness, completeness and confidence of practice Results 110 subjects returned the questionnaires with a response rate of 33% The mean age of the respondent was 37 years Only 57 women (52%) were practicers The practicers have a stronger BSE awareness ( P <0 01) and a lower mean score on thought barriers ( P =0 002) than the non practicers 40% of the practicers gain their BSE knowledge through clinicians and their mean period of practice was 3 2 years 68% of the practicers performed BSE completely The overall confidence rate was 35%, but the rate was 43% among those who performed complete BSE Thirteen factors possibly related to the completeness and rate of confidence of BSE examination were studied The only factor that significantly determined completeness was the time spent for each examination ( P =0 002) The complete practicers required a longer time than the incomplete practicers (6 60 and 2 96?min, respectively) Women with a stronger BSE intention ( P =0 001) and a lower mean score on thought barriers ( P =0 001) performed the examination confidently Conclusions Slightly over half of the FDR practice BSE The majority perform a complete BSE but they are not confident in finding abnormalities Women spending more time on BSE are associated with a higher rate of completeness However, only those with a stronger BSE intention and lesser thought barriers are more confident in their | Kelvin K C Ng, Fung S Y and Louis W C Chow DepartmentofSurgery (NgKKCandChowLWC)&NursingStudies (FungSY ) ,TheUniversityofHongKong ,QueenMaryHospital ,HongKong ,China | 2000 | Chinese Medical Journal2000，，12： | 4 |
| 4 | Hydrolyzed Al(Ⅲ) clusters:Speciation stability of nano-Al_(13)显示文摘Pure nano-Al13 and aggregates at various concentrations were prepared to examine the particle size effect of coagulation with inorganic polymer flocculant.The property and stability of various species formed were characterized using Infrared,27Al-NMR,photo correlation spectroscopy(PCS),and Ferron assay.Results showed that concentration and temperature exhibited different roles on the stability of Al13.The quantity of Alb species analyzed by ferron assay in the initial aging period corresponded well with that of Al13,which has been confirmed in a dimension range of 1-2 nm by PCS.Al13 solutions at high concentrations(0.5-2.11 mol/L) were observed to undergo further aggregation with aging.The aggregates with a wide particle size distribution would contribute to the disappeared/decreased Al13 basis on the 27Al-NMR spectrum,whereas a part of Al13 would still remain as Alb.At low concentrations,Al13 solution was quite stable at normal temperature,but lost its stability quickly when heating to 90°C. | Shuifeng Wang Chihpin Huang Christopher W K. Chow | 2011 | Journal of Environmental Sciences2011，23，5： | 3 |
| 5 | 深部地球条件下铁和氧元素的化学变化显示文摘氧与铁分别为地球上丰度最高的元素与占地球质量最大的元素,它们所形成的化合物遍布我们的星球,具有-2价的氧控制着地球的氧逸度,随着深度的增加氧逸度逐渐降低,与铁所形成的氧化物中铁的价态也逐渐降低,O/Fe逐渐增加,近些年来科学家们发现深部地球条件下铁的一系列氧化物,其中具有高压黄铁矿结构的铁超氧化物FeO2具有最高的O/Fe,并且它还能够携带一定量的H(表示为Py-FeO2H,, x=0-1)。 | 夏群科 Liu J Hu Q Y Bi W L Yang L X Xiao Y M Chow P Meng Y.Prakapenka V B Mao H K Mao W L | 2019 | 矿物岩石地球化学通报2019，38，3： | 2 |
| 6 | Neural network based short-term load forecasting using weather compensation显示文摘 | Chow T W S Leung C T | 1996 | IEEE Trans on Power Systems1996，11，4： | 2 |
| 7 | Emission from quantum-dot high-β microcavities: transition from spontaneous emission to lasing and the effects of superradiant emitter coupling显示文摘Measured and calculated results are presented for the emission properties of a new class of emitters operating in the cavity quantum electrodynamics regime.The structures are based on high-finesse GaAs/AlAs micropillar cavities,each with an active medium consisting of a layer of InGaAs quantum dots(QDs)and the distinguishing feature of having a substantial fraction of spontaneous emission channeled into one cavity mode(highβ-factor).This paper demonstrates that the usual criterion for lasing with a conventional(lowβ-factor)cavity,that is,a sharp non-linearity in the input–output curve accompanied by noticeable linewidth narrowing,has to be reinforced by the equal-time second-order photon autocorrelation function to confirm lasing.The paper also shows that the equal-time second-order photon autocorrelation function is useful for recognizing superradiance,a manifestation of the correlations possible in high-βmicrocavities operating with QDs.In terms of consolidating the collected data and identifying the physics underlying laser action,both theory and experiment suggest a sole dependence on intracavity photon number.Evidence for this assertion comes from all our measured and calculated data on emission coherence and fluctuation,for devices ranging from light-emitting diodes(LEDs)and cavity-enhanced LEDs to lasers,lying on the same two curves:one for linewidth narrowing versus intracavity photon number and the other for g(2)(0)versus intracavity photon number. | Sören Kreinberg Weng W Chow Janik Wolters Christian Schneider Christopher Gies Frank Jahnke Sven Höfling Martin Kamp Stephan Reitzenstein 无 | 2017 | Light(Science & Applications)2017，6，1： | 2 |
| 8 | Endotoxin increases hepatic susceptibility to lipid peroxidafion: a possible role of iron 显示文摘 | Ibrahim W Lee US Chow CK | 2004 | Biochem Mol Toxicol2004，18，1： | 1 |
| 9 | Structure-property relations in processing high-performance polyisoimide-imide resins显示文摘 | CHOW A W HAMLIN R D LANDIS A L | 1992 | Journal of Rheology1992，36，8： | 1 |
| 10 | A study of membrane filtration for the removal of cyanobacterial cells显示文摘 | Chow C W K Panglisch S House J | 1997 | Journal of Water Supply Research and Technology-Aqua1997，46，6： | 1 |
| 11 | Studies on fire behaviour of video compact disc (VCD) materials with a cone calorimeter 显示文摘 | Chow W K Han S S | 2004 | Polymer Testing2004，23，： | 1 |
| 12 | The relative contribution of Chkl and Chk2 to Adriamycin induced checkpoint 显示文摘 | HO C C SIU W Y CHOW J P | 2005 | Exp Cell Res2005，304，1： | 1 |
| 13 | On smoke control for tunnels by longitudinal ventilation 显示文摘 | Chow W K | 1998 | Tunnelling and Underground Space Technology1998，13，3： | 1 |
| 14 | Factors predicting seroma formation after mastectomy for Chinese breat cancer patients显示文摘 | Loo W T Chow L W | 2007 | Indian J Cancer2007，44，： | 1 |
| 15 | Thrombotic thrombocytopenic purpura:under2standing a diseatse nl longer rare显示文摘 | Moake J L Chow T W | | 0，，： | 1 |
| 16 | A strnetural equation model of supply chain quality management and organizational performance 显示文摘 | Lin C Chow W S Madu C N | 2005 | International Journal of Production Economies2005，96，2： | 1 |
| 17 | Ecology of photosynthesis in the sun and shade: summary and prognostications 显示文摘 | Osmond C B Chow W S | 1988 | Aust J Plant Physiol1988，15，： | 1 |
| 18 | Strategy,choice of performance measures, and performance 显示文摘 | Van der Stede W A Chow C W and Lin T W | 2006 | Bebavioral Research in Accounting2006，18，： | 1 |
| 19 | herative learning control with initial rectifying action for nonlinear continuous systems 显示文摘 | Li X D Ho J K L Chow T W S | 2009 | lET Proc Control Theory and Applications2009，3，1： | 1 |
| 20 | Transurethral electrovaporization of the prostate versus transurethral prostatic:a comparison of postoperative hemorrhage显示文摘 | Chow V D W Sullivan L D Wright J E | 1998 | Urology1998，51，： | 1 |
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