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Modulation doping of p-type Cu_(12)Sb_(4)S_(13)toward improving thermoelectric performance

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Journal of Materials Science & Technology 2024年第4期171卷 71-79页

作者： Khak Ho Lim mingquan Li Yu Zhang Yue Wu Qimin Zhou Qingyue Wang Xuan Yang Pingwei Liu Wen-Jun Wang ka Wai Wong ka ming ng Yu Liu Andreu Cabot Institute of Zhejiang University-Quzhou Quzhou 324000China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310007China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Ostia Technologies Limited United Kingdom Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongChina ICREA Pg.Lluis Companys 23Barcelona 08010Spain Catalonia Energy Research Institute-IREC Sant Adria del BesosBarcelona 08930Spain

The commercial viability of thermoelectric(TE)devices relies heavily on two factors:cost reduction and efficiency *** this study,we first produce p-type Cu_(12)Sb_(4)S_(16-x)(x=0,3,4)using a low-temperature bottom-up approach and demonstrate Cu_(12)Sb_(4)S_(13)to show the best TE performance among the three tested ***,the TE energy conversion efficiency of Cu_(12)Sb_(4)S_(13)is further enhanced by optimizing its electronic band structure through the incorporation of small amounts of *** an optimal Te content of 5 mol%,more than a twofold increase in the TE figure of merit(zT)is *** gain insight into the mechanism of improvement on the transport properties of the mate-rial,we compare the interphase transport mechanism by incorporating nanodomains of different metals(Ag and Cu)into the Cu_(12)Sb_(4)S_(13)*** improved electrical conductivity obtained with Cu_(12)Sb_(4)S_(13)-Te nanocomposites is attributed to a charge flooding of the Cu_(12)Sb_(4)S_(13)*** contrast,excessive down-ward band-bending at the interphases of Ag/Cu metal-semiconductor drastically reduces the electrical ***,a weighted mobility(μw)analysis shows a dominant thermal activation of carri-ers in Cu_(12)Sb_(4)S_(13)-Te *** this material,a strong decrease in lattice thermal conductivity is also found,which is associated with a phonon-carrier scattering *** work shows the impor-tance of proper band-engineering in TE nanocomposites to decouple electrical and thermal transport to enhance TE performance,and the efficacy ofμw for electrical and thermal transport analysis.

关键词： Modulation doping Thermoelectric Interphase transport Charge flooding Phonon-carrier scattering

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一次性与多次根管治疗急性牙髓炎疗效比较

中外医疗 2016年第25期35卷 50-52页

作者：康明虹厦门市口腔医院综合急诊科福建厦门361004

目的比较一次性与多次根管治疗急性牙髓炎的临床疗效。方法方便选取该院2012年9月—2014年9月收治的100例急性牙髓炎患者为研究对象,采用随机数表法将患者分为观察组与对照组,每组50例。观察组采用一次性根管治疗术,对照组采用多次根管... 详细信息

目的比较一次性与多次根管治疗急性牙髓炎的临床疗效。方法方便选取该院2012年9月—2014年9月收治的100例急性牙髓炎患者为研究对象,采用随机数表法将患者分为观察组与对照组,每组50例。观察组采用一次性根管治疗术,对照组采用多次根管治疗术,比较两组治疗后的疼痛程度及随访1年的远期疗效。结果治疗后,两组VAS疼痛评分均显著低于治疗前,差异有统计学意义(P0.05)。结论一次性根管治疗术治疗急性牙髓炎可显著缓解患者疼痛,减轻反复治疗的痛苦,且于多次根管治疗术相比,远期疗效无显著差异,因此可优先选择一次性根管治疗术治疗急性牙髓炎。

关键词：一次性根管治疗多次根管治疗急性牙髓炎治疗效果

经胫骨隧道与前内入路建立股骨骨道早期变化的差异

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临床骨科杂志 2015年第3期18卷 322-325页

作者：张理选李映姗张华胜郭汉明王新光康明惠州市中心人民医院关节外科广东惠州516001

目的比较分析经胫骨隧道与前内入路两种方式建立股骨骨道早期变化的差异,探讨相关的影响因素。方法对94例患膝关节在关节镜下单束重建前交叉韧带,A组(42例)经胫骨隧道建立股骨隧道,B组(52例)经前内侧入路建立股骨隧道。重建后用相同的... 详细信息

目的比较分析经胫骨隧道与前内入路两种方式建立股骨骨道早期变化的差异,探讨相关的影响因素。方法对94例患膝关节在关节镜下单束重建前交叉韧带,A组(42例)经胫骨隧道建立股骨隧道,B组(52例)经前内侧入路建立股骨隧道。重建后用相同的方法进行康复锻炼,术后1周和6个月复查X线片了解骨道情况。结果 A组38例、B组42例完成X线检查。术后骨道增宽的发生率两组比较差异无统计学意义(P>0.05);术后骨道增宽的程度A组较B组明显,差异有统计学意义(P=0.001)。结论两种入路建立的股骨股道术后早期均具有较高的骨道扩大发生率,经前内侧入路行ACL重建更有利于减轻股骨骨道的扩大。

关键词：前交叉韧带重建胫骨隧道入路前内入路骨道变化

Synthesis of an AIE-active fluorogen and its application in cell imaging

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Science China Chemistry 2009年第1期52卷 15-19页

作者： LAM Jacky Wing Yip FAISAL Mahtab ng ka ming LUO kathy Qian Department of Chemistry The Hong Kong University of Science & Technology (HKUST) Clear Water Bay Department of Chemical and Biomolecular Engineering HKUST Clear Water Bay Bioengineering Graduate Program HKUST Clear Water Bay

A fluorogen named 1-decyl-1-methyl-2,5-bis{4-[(N,N-diethylamino)methyl]phenyl}-3,4-diphenylsilole (3) was synthesized. It emitted weakly as isolated molecule but strongly as supramolecular aggregate, showing a characteristic behavior of aggregation-induced emission (AIE). The molecules of 3 formed highly emissive nanoparticles in aqueous media, which quickly and selectively marked cytoplasm of HeLa cells and posed no toxicity to the living cells. The fluorogen is thus a promising candidate mate-rial for cell imaging as a sensitive, selective and cytocompatible biosensor.

关键词： aggregation-induced emission biosensor cell imaging

Effects of biochar on soil water retention curves of compacted clay during wetting and drying

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Biochar 2022年第1期4卷 1117-1130页

作者： James Tsz Fung Wong ka Lai Chow Xun Wen Chen Charles Wang Wai ng ming Hung Wong Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongSARChina Department of Geography Hong Kong Baptist UniversityKowloon TongHong KongSARChina Consortium on Health EnvironmentEducation and Research(CHEER)Department of Science and Environmental StudiesThe Education University of Hong KongTai PoHong KongSARChina Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China State Environmental Protection Key Laboratory of Integrated Surface Water Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Compacted clay possesses a low water permeability and has been widely used in geo-environmental facilities such as landfill cover *** studies revealed the potential applications of compacted biochar-amended clay(BAC)as an alternative landfill cover ***,the effects of biochar on the soil water retention curves(SWRCs)of clay at low suction are not *** study can help fill this knowledge gap by measuring the wetting and drying SWRCs of clay and BAC(20%biochar).Soils were compacted in instrumented soil columns and subjected to a wetting and drying cycle,and soil water content and suction were measured along with the soil *** was saturated faster when compared with *** drying,the soil water content of clay at 65 mm depth dropped to almost zero,while about 5%of water was retained in *** showed that biochar increased the soil water retention capacity of compacted clay upon *** showed that biochar-clay composite possesses a higher soil water retention capacity at a low soil suction range(ng compacted biochar-clay composite as a hydraulic barrier to minimize desiccation-induced cracks and potentially promote its serviceability,especially in arid and semi-arid *** composite is also a carbon sink material that can reduce landfill gas emissions and pollutant leaching.

关键词： Soil amendment Biochar-clay composite Soil carbon Soil suction Soil depth

Monolithic full-color active-matrix micro-LED microdisplay using IngaN/AlGaInP heterogeneous integration

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Light(Science & Applications) 2023年第11期12卷 2459-2467页

作者： Longheng Qi Peian Li Xu Zhang ka ming Wong Kei May Lau Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

A prototype of full-color active-matrix micro-light-emitting diode(micro-LED)micro-display with a pixel density of 391 pixel per inch(ppi)using IngaN/AlGaInP heterogeneous integration is *** blue/green dual-color micro-LED arrays realized on a single metal organic chemical vapor deposition(MOCVD)-grown GaN-on-Si epiwafer and AlGaInP red micro-LED arrays are both monolithically fabricated,followed by the integration with a common complementary metal oxide semiconductor(CMOS)backplane via flip-chip bonding technology to form a doublelayer thin-film display ***-color images with decent color gamut and brightness are successfully displayed through the fine adjustment of driving current densities of RGB *** full-color display combines the advantages of high quantum efficiency of IngaN material on blue/green light and AlGaInP material on red light through heterogeneous integration and high pixel density through monolithic fabrication approach,demonstrating the feasibility and prospects of high brightness,good color performance,and high-resolution micro-LED microdisplays in future metaverse applications.

关键词： AlGaInP integration matrix

Transurethral resection of prostate for acute urinary retention is linked to shorter survival in younger men

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Asian Journal of Andrology 2019年第5期21卷 468-472页

作者： Jeremy Yuen-Chun Teoh Chi-Kwok Chan Maggie Haitian Wang Chi-Ho Leung Eddie Shu-Yin Chan Peter ka-Fung Chiu Chi-Hang Yee Hon-ming Wong Simon See-ming Hou Chi-Fai ng S.H.Ho Urology Centre Department of SurgeryPrince of Wales HospitalThe Chinese University of Hong KongHong KongChina Division of Biostatistics JC School of Public Health and Primary CareThe Chinese University of Hong KongHong KongChina Division of Urology Department of SurgeryNorth District HospitalHong KongChina Division of Urology Department of SurgeryAlice Ho Miu Ling Nethersole HospitalHong KongChina

It is largely unknown whether lower urinary tract symptoms(LUTS)or acute retention of urine(AROU)is linked to shorter life expectancy in *** conducted a multicenter,retrospective database analysis of patients undergoing transurethral resection of prostate(TURP)to study their *** Cox regression analysis and kaplan-Meier analysis with stratification to age and indication of TURP were *** further performed an age-and sex-matched survival analysis with the general population using data from the Census and Statistics Department of the Hong Kong Special Administrative Region(Hong Kong,China).From January 2002 to December 2012,3496 patients undergoing TURP were included in our study,with 1764 patients in the LUTS group and 1732 patients in the AROU *** age,ischemic heart disease,cerebrovascular accident,and AROU were risk factors of *** aged80 *** to the general population,younger patients in the LUTS group appeared to have better survival(nger patients in the AROU group had worse survival(80 years,survival was similar with the general population in both the LUTS and AROU *** conclusion,AROU at young age was associated with mortality,while early detection and management of LUTS may improve survival.

关键词： acute retention of urine lower urinary tract symptoms mortality transurethral resection of prostate

Association of time to prostate-specific antigen nadir and logarithm of prostate-specific antigen velocity after progression in metastatic prostate cancer with prior primary androgen deprivation therapy

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Asian Journal of Andrology 2017年第1期19卷 98-102页

作者： Jeremy YC Teoh James HL Tsu Steffi KK Yuen Peter KF Chiu Samson YS Chan ka-Wing Wong Kwan-Lun Ho Simon SM Hou Chi-Fai ng ming-Kwong Yiu Division of Urology Department of Surgery The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong China Division of Urology Department of Surgery Queen Mary Hospital University of Hong Kong Hong Kong China.

We investigated the association of time to prostate-specific antigen nadir （TTPN） and logarithm of prostate-specific antigen velocity after progression Log（PSAVAP） in metastatic prostate cancer with prior primary androgen deprivation therapy （ADT）. All metastatic prostate cancer patients treated with primary ADT from 2000 to 2009 were reviewed. Patients who developed disease progression were included in the subsequent analyses. Patients were categorized into three groups according to their TTPN： TTPN of 〈3 months, 3-17 months, and 〉17 months. We compared the Log（PSAVAP） between the different TTPN groups using Mann-Whitney U-test and Kruskal-Wallis test. Further multiple linear regression analyses on Log（PSAVAP） were performed to adjust for other potential confounding factors. Among 419 patients who were treated with primary ADT, 306 patients developed disease progression with a median follow-up of 28 months, Longer TTPN was associated with lower Log（PSAVAP）（P = 0.008） within all subgroup analyses （TTPN of 〈3 vs 3-17 months, P = 0.020; TTPN of 3-17 vs 〉17 months, P = 0.009; and TTPN of 〈3 vs 〉17 months, P = 0.001）. Upon multiple linear regression analyses, baseline PSA （regression coefficient 0.001, P = 0.045）, PSA nadir （regression coefficient 0.002, P = 0.040）, and TTPN （regression coefficient -0.030, P = 0.001） were the three factors that were significantly associated with Log（PSAVAP）. In conclusion, a longer TTPN was associated with lower Log（PSAVAP） in metastatic prostate cancer patients following primary ADT. TTPN cut-offs at 3 months and 17 months appeared to have prognostic significance in predicting Log（PSAVAP）. TTPN may serve as a good prognostic indicator in deciding the treatment strategy in patients with disease progression.

关键词： androgen deprivation therapy prostate cancer prostate-specific antigen velocity after progression ti me to prostate-specific antigen nadir

Multiparametric magnetic resonance imaging/transrectal ultrasound fusion prostate biopsy with semi-robotic navigation in the Chinese population： initial results

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Asian Journal of Andrology 2018年第1期20卷 93-94页

作者： Wai Kit Ma Brian SH HO Andrew SH Lai ka Cheong Lam Yun Sang Chan Lawrance KC Yip Ada TL ng James HL Tsu ming Kwong Yiu Division of Urology Department of Surgery The University of Hong Kong Queen Mary Hospital Hong Kong China Department of Diagnostic Radiology The University of Hong Kong Queen Mary Hospital Hong Kong China

Dear Editor, The current standard 12-core systematic transrectal ultrasound （TRUS）-guided biopsy in prostate cancer diagnosis has the disadvantages of overdetecting indolent tumors, while failing to identify clinically significant cancers in up to 35%.1 Advances in imaging techniques, notably the multiparametric magnetic resonance imaging （mpMRI）, allow clinically significant prostate cancers to be detected with more precise localization） Fusion of MRI and real-time TRUS enables targeted biopsy of suspicious lesions, overcoming human error, and inability of biopsy site tracking in cognitive fusion？ Multiple Western series have suggested a higher detection rate, higher specificity, and better risk stratification with fusion biopsy.

关键词： magnetic resonance imaging cancer diagnosis