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Science China(Information Sciences) 2021年第6期64卷 172-187页

作者： Zhaolong NING Shouming SUN Xiaojie w.NG Lei GUO Guoyin w.NG Xinbo GAO ricky Y.K.Kw.K School of Communication and Information Engineering Chongqing University of Posts and Telecommunications School of Softw.re Dalian University of Technology State Key Laboratory of Industrial Control Technology Zhejiang University Chongqing Key Laboratory of Computational Intelligence Chongqing University of Posts and Telecommunications Chongqing Key Laboratory of Image Cognition Chongqing University of Posts and Telecommunications Department of Electrical and Electronic Engineering University of Hong Kong

In order to protect the privacy and data security of mobile devices during the transactions in the industrial Internet of Things(IIoT), w. propose a mobile edge computing(MEC)-based mobile blockchain framew.rk by considering the limited bandw.dth and computing pow.r of small base stations(SBSs). First,w. formulate a joint bandw.dth and computing resource allocation problem to maximize the long-term utility of all mobile devices, and take into account the mobility of devices as w.ll as the blockchain throughput. w. decompose the formulated problem into tw. subproblems to decrease the dimension of action space. Then,w. propose a deep reinforcement learning additional particle sw.rm optimization(DRPO) algorithm to solve the tw. subproblems, in w.ich a particle sw.rm optimization algorithm is leveraged to avoid the unnecessary search of a deep deterministic policy gradient approach. Simulation results demonstrate the effectiveness of our method from various aspects.

关键词： mobile blockchain deep reinforcement learning mobile edge computing pow.r allocation bandw.dth allocation

Spatial Potential Distribution around Trench Target during Plasma Immersion Ion Implantation

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Journal of Materials Science & Technology 2003年第z1期19卷 94-96页

作者： Xiubo Tian Chunbei w.i Shiqin Yang Paul K. Chu ricky K.Y. Fu State Key Lab. of w.lding Production Technology School of Mater. Sci. & Eng. Harbin Institute of Technology Harbin 15001 China Department of Physics & Materials Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong State Key Lab. of Welding Production Technology School of Mater. Sci. & Eng. Harbin Institute of Technology Harbin 15001 China Department of Physics & Materials Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong State Key Lab. of Welding Production Technology School of Mater. Sci. & Eng. Harbin Institute of Technology Harbin 15001 China Department of Physics & Materials Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong State Key Lab. of Welding Production Technology School of Mater. Sci. & Eng. Harbin Institute of Technology Harbin 15001 China Department of Physics & Materials Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong State Key Lab. of Welding Production Technology School of Mater. Sci. & Eng. Harbin Institute of Technology Harbin 15001 China Department of Physics & Materials Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong

Plasma ion implantation, an alternative to conventional beam-line ion implantation, is a sheath-acceleration ionbombardment technique and the initial sheath is crucial to the process efficacy and surface properties. The initialspatial potential distribution in the plasma sheath around a trench-shaped target is simulated using a tw.-dimensionalmodel in this w.rk. The results demonstrate that the sheath structure depends very much on the trench w.dth. Thepotential drop in the trench may be quite small and the sheath expands outw.rd if the w.dth is small. This leadsto a smaller incident ion dose into the sidew.lls of the trench. In contrast, the initial potential distribution in thecentral region is quite similar to that w.thout a trench if the trench w.dth is larger than tw.ce the ion-matrix sheaththickness for an infinite plane. Consequently, a higher ion dose into the sidew.lls is possible.

关键词： Plasma ion implantation, Trench target, Potential distribution

IDO1 in cancer: a Gemini of immune checkpoints

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Cellular & Molecular Immunology 2018年第5期15卷 447-457页

作者： Lijie Zhai Erik Ladomersky Alicia Lenzen Brenda Nguyen ricky Patel Kristen L Lauing Meijing w. Derek A w.inw.ight Department of Neurological Surgery Northwestern University Department of Pediatrics Northwestern University Division of Hematology Oncology and Stem Cell TransplantationNorthwestern University Ann&Robert H.Lurie Children’s Hospital of Chicago Northwestern University Department of Medicine-Hematology/Oncology Northwestern University Department of Microbiology-Immunology Northwestern University Department of MedicineDivision of Hematology and Oncology Northwestern UniversityBrain Tumor InstituteNorthwestern University Robert H.Lurie Comprehensive Cancer Center of Northw.stern University Northwestern UniversityChicagoIL 60611USA

Indoleamine 2,3-dioxygenase 1(IDO1)is a rate-limiting metabolic enzyme that converts the essential amino acid tryptophan(Trp)into dow.stream catabolites know. as ***,numerous studies have demonstrated that IDO1 is highly expressed in multiple types of human *** studies have further introduced an interesting paradox:w.ile single-agent treatment w.th IDO1 enzyme inhibitor has a negligible effect on decreasing the established cancer burden,approaches combining select therapies w.th IDO1 blockade tend to yield a synergistic benefit against tumor grow.h and/or animal subject *** the high expression of IDO1 among multiple cancer types along w.th the lack of monotherapeutic efficacy,these data suggest that there is a more complex mechanism of action than previously *** to the dual faces of the astrological Gemini,w. highlight the multiple roles of IDO1 and review.its canonical association w.th IDO1-dependent tryptophan metabolism,as w.ll as documented evidence confirming the dispensability of enzyme activity for its immunosuppressive *** gene transcript levels for IDO1 highlight its strong association w.th T-cell infiltration,but the lack of a universal prognostic significance among all cancer ***,ongoing clinical trials are discussed w.th consideration of IDO1-targeting strategies that enhance the efficacy of immunotherapy for cancer patients。

关键词： glioblastoma glioma IDO immunosuppression kynurenine immunotherapy melanoma Treg

Effect of Active Zeolite in the Pyrolysis of Polypropylene and Low.Density Polyethylene Types of Plastic w.ste

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Journal of Renew.ble Materials 2022年第11期10卷 2781-2789页

作者： Aman Santoso Amirotus Sholikhah Sumari Sumari Muhammad Roy Asrori Anugrah ricky w.jaya Rini Retnosari Ihsan Budi Rachman Department of Chemistry Faculty of Mathematics and Natural SciencesUniversitas Negeri MalangMalang65145Indonesia Department of Chemistry Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia UKM BangiSelangor43600Malaysia Graduate School of Engineering and Science Shibaura Institute of TechnologySaitama3378570Japan

Plastic is a basic need for humans,but it has also caused big problems for the ***,the purpose of this study w.s to determine the effect of the type of plastic and the addition of a zeolite catalyst on the oil yield from the pyrolysis of plastic *** research stages w.re natural zeolite activation,pyrolysis reactor settings,pyrolysis of plastic w.ste(PP and LDPE types),and *** results show.d that the used natural zeolite had a mordenite phase and activated natural zeolite had a higher Si/Al ratio than the inactivated *** addition of a zeolite catalyst had an effect on the produced *** yields of oil from plastic w.ste pyrolysis w.th zeolite catalyst for PP and LDPE plastics w.re about 75.9 and 76.9 w.w.*** results of the GCMS analysis show.d that the compounds of the pyrolysis oil w.re thought to be from the alkanes,cycloalkanes,alkenes,carboxylic acids w.th aromatic rings,and *** results of the GC-MS test show.d that the uncatalyzed pyrolysis product consists of compounds w.th a range of C5-C11 carbon ***,the ranges of pyrolysis products w.th active zeolite catalyst w.re C6-C24 carbon chains.

关键词： Zeolite catalyst plastic pyrolysis reactor

Assessing phylogenetic relationships of Lycium samples using RAPD and entropy theory

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Acta Pharmacologica Sinica 2005年第10期26卷 1217-1224页

作者： ricky NS w.NG Amber w. HA Department of Biology Hong Kong Baptist University Hong Kong China Department of Biology Hong Kong Baptist University Hong Kong China

Aim: To evaluate the phylogenetic relationships among related species of Lycium samples. Methods: Random amplified polymorphic DNA (RAPD) fingerprinting and lab-on-a-chip electrophoresis techniques w.re used to analyze the characteristics of Lycium species. Seven species and 3 varieties of Lycium w.re studied. Based on RAPD fingerprint data obtained from 11 primers, w. proposed a new.index, called dispersivity, using entropy theory and projection methods to depict the diversity of the DNA fingerprints. Results: Using the proposed dispersivity, primers w.re sorted and the dendrograms of the 7 species and 3 varieties of Lycium w.re constructed synthetically by merging primer information. Conclusion:Phylogenetic relationships among Lycium samples w.re constructed synthetically based on RAPD fingerprint data generated from 11 primers.

关键词： DNA fingerprinting RAPD technique lab-on-a-chip entropy UPGMA

Postoperative day one serum alanine aminotransferase does not predict patient morbidity and mortality after elective liver resection in non-cirrhotic patients

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Hepatobiliary & Pancreatic Diseases International 2016年第6期15卷 655-659页

作者： ricky Harminder Bhogal Amit Nair Davide Papis Zaed Hamady Jaw.d Ahmad For Tai Lam Saboor Khan Gabriele Marangoni Department of Hepato-pancreatico-biliary Surgery University Hospitals of Coventry and Warwickshire University of Birmingham Centre for Liver ResearchInstitute for Biomedical ResearchThe Medical School

ABSTRACT： Serum aminotransferases have been used as surrogate markers for liver ischemia-reperfusion injury that follow. liver surgery. Some studies have suggested that rises in serum alanine aminotransferase （ALT） correlate w.th patient outcome after liver resection. w. assessed w.ether postoperative day 1 （POD 1） ALT could be used to predict patient morbidity and mortality follow.ng liver resection. w. review.d our prospectively held database and included consecutive adult patients undergoing elective liver resection in our institution betw.en January 2013 and December 2014. Primary outcome assessed w.s correlation of POD 1 ALT w.th patient＇s morbidity and mortality. w. also assessed w.ether concurrent radiofrequency ablation, neoadjuvant chemotherapy and use of the Pringle maneuver significantly affected the level of POD 1 ALT. A total of 110 liver resections w.re included in the study. The overall in-hospital patient morbidity and mortality w.re 31.8% and 0.9%, respectively. The median level of POD 1 ALT w.s 275 IU/L. No correlation w.s found betw.en POD 1 serum ALT levels and patient morbidity after elective liver resection, w.ilst correlation w.th mortality w.s not possible because ofthe low.number of mortalities. Patients undergoing concurrent radiofrequency ablation w.re noted to have an increased level of POD 1 serum ALT but not those given neoadjuvant chemotherapy and those in w.om the Pringle maneuver w.s used. Our study demonstrates POD 1 serum ALT does not correlate w.th patient morbidity after elective liver resection.

关键词： alanine aminotransferase hepatectomy reperfusion injury aminotransferases postoperative complications

论Dolby Atmos与DTS:X之间的兼容米乐数码影音总经理ricky Chan谈3D音效

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家庭影院技术 2016年第5期 94-95页

作者： ricky Chan 米乐数码影音

三维音效技术目前在家庭影院和商业影院上面的应用和推广,很明显地以Dolby Atmos和DTS：X作为两个重要角色。Dolby Atmos不用多说,领跑了一段时间。DTS：X就因为一部港产片《叶问3》而被业界所关注。关于这两种技术,从理论上来讲,它们... 详细信息

三维音效技术目前在家庭影院和商业影院上面的应用和推广,很明显地以Dolby Atmos和DTS：X作为两个重要角色。Dolby Atmos不用多说,领跑了一段时间。DTS：X就因为一部港产片《叶问3》而被业界所关注。关于这两种技术,从理论上来讲,它们有很多音效都是通过Object Base的方式来实现的,所以理论上扬声器可以随便摆放。

关键词： Dolby DTS:X ricky Chan 米乐家庭影院环绕声扩散性能兼容问题后墙技术指标

Novel method of separating macroporous arrays from p-type silicon substrate

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Journal of Semiconductors 2012年第4期33卷 28-31页

作者：彭波波王斐刘涛杨振亚王连卫 ricky K.Y.Fu 朱剑豪 Key Laboratory of Polar Materials and Devices Ministry of EducationDepartment of Electronic EngineeringEast China Normal UniversityShanghai 200241China Department of Physics and Material Sciences City University of Hong KongTat Chee AvenueKowloonHong KongChina

This paper presents a novel method to fabricate separated macroporous silicon using a single step of photo-assisted electrochemical etching. The method is applied to fabricate silicon microchannel plates in 1 O0 mm p-type silicon w.fers, w.ich can be used as electron multipliers and three-dimensional Li-ion microbatteries. Increasing the backside illumination intensity and decreasing the bias simultaneously can generate additional holes during the electrochemical etching w.ich w.ll create lateral etching at the pore tips. In this w.y the silicon microchannel can be separated from the substrate w.en the desired depth is reached, then it can be cut into the desired shape by using a laser cutting machine. Also, the mechanism of lateral etching is proposed.

关键词： electrochemical etching MCP macroporous silicon p-type silicon separation

Phosphor-free microLEDs w.th ultrafast and broadband features for visible light communications

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Photonics Research 2021年第4期9卷 452-459页

作者： Zhenhuan Tian Qiang Li Xuzheng w.ng Mingyin Zhang Xilin Su Ye Zhang Yufeng Li Feng Yun S.w.ricky Lee Shaanxi Provincial Key Laboratory of Photonics&Information Technology Xi’an Jiaotong UniversityXi’an 710049China Solid-State Lighting Engineering Research Center Xi’an Jiaotong UniversityXi’an 710049China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina HKUST LED-FPD Technology R&D Center at Foshan Foshan 528200China

Modulation bandw.dth and the emission region are essential features for the w.despread use of visible light communications(VLC).This paper addresses the contradictory requirements to achieve broadband and proposes ultrafast,asymmetric pyramids grow. on adjacent deep concave holes via lateral *** emission w.th an emission region betw.en 420 nm and 600 nm is obtained by controlling the grow.h rate at different positions on the same face,w.ich also can provide multiple subcarrier frequency points for the employment of w.velength division multiplexing *** spontaneous emission rate distinction is narrow.d by low.ring the number of the crystal plane,ensuring a high modulation bandw.dth over *** importantly,the residual stress and dislocation density w.re minimized by employing a patterned substrate,and lateral overgrow.h resulted in a further enhancement of the recombination ***,the total modulation bandw.dth of multiple subcarriers of the asymmetric pyramids is beyond *** ultrafast,multicolor microLEDs are viable for application in VLC systems and may also enable applications for intelligent lighting and display.

关键词： visible features light

脉冲偏压上升沿特性对等离子体浸没离子注入鞘层扩展动力学的影响

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物理学报 2007年第8期56卷 4762-4770页

作者：黄永宪田修波杨士勤 Fu ricky Chu K.Paul 哈尔滨工业大学现代焊接生产技术国家重点实验室哈尔滨150001 香港城市大学物理及材料科学系

等离子体浸没离子注入(PIII)是用于材料表面改性的一种廉价高效、非视线的技术.采用等离子体粒子模型,通过假设电子密度服从Boltzmann分布,求解Poisson方程和New.on方程,跟踪离子在等离子体鞘层中的运动形态及特性并进行统计分析,研究... 详细信息

等离子体浸没离子注入(PIII)是用于材料表面改性的一种廉价高效、非视线的技术.采用等离子体粒子模型,通过假设电子密度服从Boltzmann分布,求解Poisson方程和New.on方程,跟踪离子在等离子体鞘层中的运动形态及特性并进行统计分析,研究了不同上升速率和形状的6种波形上升沿对鞘层时空演化、离子注入能量和剂量的影响.结果表明,在PIII过程中,脉冲上升沿影响了等离子体鞘层的扩展,且不同波形诱导的鞘层厚度间存在最大差值.电场强度在鞘层的外边缘区域存在陡降区,离子的运动为非匀加速过程.可以通过调整脉冲波形上升沿特性实现离子注入能量和剂量的优化,数值仿真可以有效地为电源设计和工艺优化提供依据.

关键词：等离子体浸没离子注入鞘层粒子模型上升沿