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Editorial for Focus Issue on Digital and Computer Generated Holography (DCH)

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Chinese Optics Letters 2009年第12期7卷 1065-1065页

作者： ting-chung poon Bradley Department of Electrical and Computer Engineering Virginia Tech

This focus issue Digital and Computer Generated Holography （DCH） combines the contributions from digital holography （DH） and computer-generated holography （CGH） into a single issue. We have classified the papers... 详细信息

关键词： DCH Editorial for Focus Issue on Digital and Computer Generated Holography

Optical image processing using acousto-optic modulators as programmable volume holograms: a review [Invited]

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Chinese Optics Letters 2022年第2期20卷 24-33页

作者： Yaping Zhang Houxin Fan ting-chung poon Yunnan Provincial Key Laboratory of Modern Information Optics Kunming University of Science and TechnologyKunming 650500China The Bradley Department of Electrical and Computer Engineering Virginia TechBlacksburgVirginia 24061USA

Bragg processing using a volume hologram offers an alternative in optical image processing in contrast to Fourier-plane processing. By placing a volume hologram near the object in an optical imaging setup, we achieve Bragg processing. In this review, we discuss various image processing methods achievable with acousto-optic modulators as dynamic and programmable volume holograms. In particular, we concentrate on the discussion of various differentiation operations leading to edge extraction capabilities.

关键词： optical image processing edge extraction acousto-optics volume gratings

Enhanced depth resolution in optical scanning holography using a configurable pupil

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Photonics Research 2014年第2期2卷 64-70页

作者： Haiyan Ou ting-chung poon Kenneth K.Y.Wong Edmund Y.Lam Department of Electrical and Electronic Engineering University of Hong KongPokfulamHong KongChina Institute of Applied Physics University of Electronic Science and Technology of China610054ChengduChina Bradley Department of Electrical and Computer Engineering Virginia TechBlacksburgVirginia 24061USA

The optical scanning holography(OSH)technique can capture all the three-dimensional volume information of an object in a hologram via a single raster *** digital hologram can then be processed to reconstruct individual sectional images of the *** this paper,we present a scheme to reconstruct sectional images in OSH with enhanced depth resolution,where a spatial light modulator(SLM)is adopted as a configurable point *** switching the SLM between two states,different Fresnel zone plates(FZPs)are generated based on the same optical *** extra information provided by different FZPs,a depth resolution at 0.7μm can be achieved.

关键词： resolution sectional Fresnel

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光学加密技术研究进展（英文）

上海师范大学学报（自然科学版） 2015年第4期44卷 389-397页

作者：闫爱民胡志娟 ting-chung poon 上海师范大学数理学院上海200234 弗吉尼亚理工大学电气与计算机工程系黑堡usa24061

光学加密技术具有很多独特优势,在信息安全和防伪领域中有着重要的应用.综述了近年来光学加密技术的发展过程,详细介绍了几种基于随机相位板的加密技术的实现方法、特点和问题,并对其应用前景作了阐述.

关键词：信息安全光学加密随机相位数字全息

Little girl who conquered the "ALPPS''

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World Journal of Gastroenterology 2014年第29期20卷 10208-10211页

作者： Albert Chan Patrick HY chung Ronnie TP poon Division of Hepatobiliary and Pancreatic Surgery and Liver Transplantation Department of SurgeryQueen Mary HospitalThe University of Hong Kong Division of Pediatric Surgery Department of SurgeryQueen Mary Hospitalthe University of Hong Kong

An insufficient future liver remnant(FLR)is associated with post-hepatectomy liver *** liver partition and portal vein ligation for stage hepatectomy(ALPPS)has been shown to be effective for the induction of rapid FLR hypertrophy so as to improve the resectability in patients with insufficient *** hereby report our experience of this novel approach for a 6-year-old patient with *** tomography showed a hepatoblastoma measuring12.5 cm×9.9 cm×11.7 cm in the right liver(Couinaud segmentⅣ,ⅤandⅧ).Volumetric assessment of the FLR i.e.,left lateral section was 112.6 mL i.e.,21.2%of the estimated total liver *** view of the small-for-size FLR,ALPPS was *** anterior approach was adopted for the in-situ parenchymal split without mobilisation of the right *** volumetry on the seventh postoperative day was 160.7 mL,which represented a 46.1%gain in volume,and a FLR/ESLV ratio of 30.2%.A right trisectionectomy was performed on the eighth postoperative *** recovery was *** was discharged on day 16 after the first *** our knowledge,this was the first report that showed the applicability of ALPPS to a paediatric patient.

关键词： Associating liver partition and portal vein ligation for stage hepatectomy Hepatectomy Portal vein Hepatoblastoma In-situ split

Design and in vivo characterization of kidney-targeting multimodal micelles for renal drug delivery

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Nano Research 2018年第10期11卷 5584-5595页

作者： Jonathan Wang Christopher poon Deborah Chin Sarah Milkowski Vivian Lu Kenneth R. Hallows Eun Ji chung Department of Biomedical Engineering University of Southern California Los Angeles CA 90089 USA Division of Nephrology and Hypertension Department of Medicine Keck School of Medicine University of Southern California Los Angeles CA 90033 USA USC/UKRO Kidney Research Center Keck School of Medicine University of Southern California Los Angeles CA 90033 USA Norris Comprehensive Cancer Center University of Southern California Los Angeles CA 90033 USA Department of Stem Cell Biology and Regenerative Medicine University of Southern California Los Angeles CA 90033 USA Mork Family Department of Chemical Engineering and Materials Science University of Southern California Los Angeles CA 90089 USA

One in three Americans is at risk for developing chronic kidney disease （CKD） and end-stage renal disease （ESRD）, leading to the need for dialysis or a kidney transplant. Small-molecule drugs have been proposed as therapies to manage kidney diseases, but high dosages are often required to achieve therapeutic efficacy, generating off-target side effects, some of which are lethal. To address these limitations, we developed a novel kidney-targeting multimodal micelle （KM） system for drug delivery applications. SpecificaU~ we incorporated the kidney-targeting peptide （Lysine-Lysine-Glutamic acid-Glutamic acid-Glutamic acid）3-Lysine）（（KKEEE）3K） into micelles. This peptide binds to megalin, a multi-ligand cell surface receptor present on renal tubule cells. When incubated with human kidney proximal tubule cells, KMs were found to be biocompatible in vitro. In vivo, KMs showed higher accumulation in the kidneys as compared to a non-targeted （NT） control upon intravenous injection in wild-type C57BL/6J mice. Histological evaluation showed no signs of tissue damage, while blood urea nitrogen （BUN） and creatinine levels were within normal ranges, validating the preservation of kidney health upon micelle administration. To our knowledge, this is the first utilization of （KKEEE）BK in a nanoparticle formulation, and our study offers strong evidence that this novel nanoparticle platform can be used as a candidate drug delivery carrier to direct therapeutics to diseased tissue in CKD.

关键词： micelle kidney disease renal targeting biodistribution nanoparticle

Velocity variation of internal shock waves in gamma ray bursts: Observational properties

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Science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 505-512页

作者： poon Helen Astronomy Department Beijing Normal University

The work uses the data in the TTS mode of BATSE to analyze the time lags and pulse widths of GRB960113 and GRB960722 in high as well as low energy bands. The results show that their time lags increase monotonously. This phenomenon can reasonably be interpreted with the model of internal shock waves of γ-ray bursts (GRB). Perhaps we obtain the direct observational evidence for the fireball model of GRBs for the first time.

关键词： GRB, time lag, shock wave.

Quality Control of Recycled Aggregates Derived from Construction and Demolition Wastes

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四川大学学报（工程科学版） 2009年第3期41卷 248-257页

作者： poon Chi-sun KOU Shi-cong Dept. of Civil and Structural Engineering the Hong Kong Polytechnic Univ. Hung Horn Kowloon Hong Kong

In 2007,over 24 million tons of Construction and Demolition(C&D) wastes were generated in Hong *** the local landfills will be saturated in about 6 years,it is important to find a viable way to reuse these waste materials as to alleviate the demand on public fill *** order to tackle the problem,the Hong Kong government has set up a temporary recycling facility in Hong Kong in 2002 for producing different sizes of recycled aggregate for use in various construction *** Hong Kong Polytechnic University has been studying the feasible use of recycled aggregates in Hong Kong for a number of years.A substantial amount of experimental results on the properties of recycled aggregates and the effect of recycled aggregates on the properties of concrete and other construction products(*** blocks and granular sub-base) has been *** this paper,the experience of Hong Kong in using recycled aggregates are summarized and a set of quality control guidelines proposed for governing the use of recycled aggregates in Hong Kong is *** experience and guidelines may also be useful for the recycling of waste materials derived from the recent Sichuan earthquake in China.

关键词：建筑物工程质量抗震设计建筑结构

Compressive Strength, Pore Size Distribution and Chloride-ion Penetration of Recycled Aggregate Concrete Incorporating Class-F Fly Ash

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Journal of Wuhan University of Technology(Materials Science) 2006年第4期21卷 130-136页

作者：寇世聪 C S poon Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hung HomKowloon Hong Kong

The effects of fly ash on the compressive strength, pore size distribution and chloride-ion penetration of recycled aggregate concrete were investigated. Two series of concrete mb：tures were prepared. The concrete mixtures in series I had a water-to-binder ratio and a cement content of 0.55 and 410 kg/ m^3 , respectively. The concrete rnixtures in series II had a water-to-binder ratio and a cement content of 0.45 and 400 kg/ ml respectively. Recycled aggregate was ased as 20% , 50% , and 100% replacements of natural coarse aggregate in the concrete mixtures in both series. In cutdition, fly ash was used as 0% , 25% and 35% by weight replacements of cement. The results show that the compressive strengths of the concrete decreased as the recycled aggregate and the fly ash contents increased. The total porosity and average porosity diameter of the concrete increased us the recycled aggregate content increased. Furtherrruore , an increase in the recycled aggregate content decreased the resistance to chloride ion penetration. Nevertheless, the replacement of cement by 25% fly ush improved the resistance to chloride ion penetration and pore diameters and reduced the total porosity of the recycled aggregate concrete.

关键词： durability properties recycled aggregate concrete fly ash