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Nonlinear excitations and“peak.ns”of a(2+1)-dimensional generalized Broer-k.up system

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Acta Mechanica Sinica 2007年第2期23卷 209-214页

作者： X. Y. Tang k. w. chow S. Y. Lou Department of Physics Shanghai Jiao Tong UniversityShanghai 200030 China Department of Mechanical Engineering University of Hong KongHong Kong China Department of Physics Ningbo UniversityNingbo 315211 China

Shallow.w.ter w.ves and a host of long w.ve phenomena are commonly investigated by various models of nonlinear evolution equations. Examples include the k.rtew.g-de Vries, the Camassa-Holm, and the w.itham-Broer-k.up （w.k. equations. Here a generalized w.k.system is studied via the multi-linear variable separation approach. A special class of w.ve profiles w.th discontinuous derivatives （＂peak.ns＂） is developed. Peak.ns of various features, e.g. periodic, pulsating or fractal, are investigated and interactions of such entities are studied.

关键词： Shallow.w.ter w.ve .Excitation Broer-k.up system .Peak.n

Sungai Lembing’s green tourism: Pioneering the future of resourcebased urban renew.l

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The Innovation 2024年第3期5卷 19-20页

作者： Haoxuan Yu Ginura Gunaratna Izni Zahidi chow Ming Fai Department of Civil Engineering School of EngineeringMonash University MalaysiaBandar SunwaySelangor 47500Malaysia

HOw.DID SUNGAI LEMBING PAVE ITS PATH TO A GREEN EVOLUTION?Sungai Lembing,a resource-based tow. situated in Pahang,Malaysia,has historically positioned itself as a pivotal hub in the global tin mining ***,Sungai Lembing’s history dates back.to the Paleozoic and Mesozoic *** eras w.re mark.d by the closure of the Tethyan Ocean and the convergence of continental landmasses from the eastern part of the Gondw.na *** complex geological back.round resulted in a w.de variety of mineral resources.

关键词： situated eastern Pioneer

Drosophila adhesion GPCR Remoulade regulates axon grow.h, branching, and guidance by modulating Rac1 GTPase

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Journal of Genetics and Genomics 2024年第4期51卷 458-461页

作者： Xi Yang Changk.n Pan Meitong Ye Jinshuo Liang Haoyang Cheng Qing Liang Shu Huang Jianshu w.ng Hoi Yee chow Haihuai He Cancer Center and State k.y Laboratory of Biotherapy West China HospitalSichuan UniversityChengduSichuan 610041China National Clinical Research Center for Geriatrics and State k.y Laboratory of Biotherapy West China HospitalSichuan UniversityChengduSichuan 610041China Department of Neurosurgery Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan 610041China

The assembly of neurons into complex circuits relies upon appropriate axonal navigation to distant *** considerable progress has been made tow.rd understanding the regulation of the guidance and branching of axon extension,the molecular and cellular mechanisms underlying the coordination of the motility of the axon tip,axon grow.h,and branching remain largely unk.ow.(Sudhof,2017).The Drosophila mushroom body(MB),the major site for associative learning and memory,is a pow.rful model system to investigate complex axon *** MB is a bilaterally symmetric central brain structure,mainly composed of k.nyon cells,MB output neurons,and dopaminergic neurons(Li et al.,2020).Among the seven neuronal subtypes of~2000 k.nyon cells,Y,a/β,and a/β'subtypes extend axons in a fascicle and bifurcate to produce tw. sister branches,one projecting into the dorsal lobe and the other into the medial lobe.

关键词： branching medial axon

Hydrolyzed Al(Ⅲ) clusters:Speciation stability of nano-Al_(13)

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Journal of Environmental Sciences 2011年第5期23卷 705-710页

作者： Shuifeng w.ng Chihpin Huang Christopher w.k. chow Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China. E-mail: wgds@*** Institute of Environmental Engineering National Chiao Tung University Hsinchu Taiwan China Australian w.ter Quality Centre SA Water Corporation 250 Victoria Square Adelaide SA 5000 South Australia

Pure nano-All3 and aggregates at various concentrations w.re prepared to examine the particle size effect of coagulation w.th inorganic polymer flocculant. The property and stability of various species formed w.re characterized using Infrared, 27Al-NMR, photo correlation spectroscopy （PCS）, and Ferron assay. Results show.d 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 w.ll w.th that of Al13, w.ich has been confirmed in a dimension range of 1-2 nm by PCS. Al13 solutions at high concentrations （0.5-2.11 tool/L） w.re observed to undergo further aggregation w.th aging. The aggregates w.th a w.de particle size distribution w.uld contribute to the disappeared/decreased Al13 basis on the eTA1-NMR spectrum, w.ereas a part of Al13 w.uld still remain as Alb. At low.concentrations, All3 solution w.s quite stable at normal temperature, but lost its stability quick.y w.en heating to 90~C.

关键词： nano-All3 clusters inorganic polymer flocculant speciation stability

Long-term impact of artificial intelligence on colorectal adenoma detection in high-risk.colonoscopy

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w.rld Journal of Gastrointestinal Endoscopy 2024年第6期16卷 335-342页

作者： k.nneth w.chow Matthew.T Bell Nicholas Cumpian Maryanne Amour Ryan H Hsu Vik.or E Eysselein Neetik. Srivastava Michael w.Fleischman Sofiya Reicher Department of Medicine Harbor-UCLA Medical CenterTorranceCA 90502United States Department of Bioengineering Jacobs School of EngineeringUniversity of CaliforniaSan DiegoLa JollaCA 92093United States Department of Gastroenterology Harbor-UCLA Medical CenterTorranceCA 90502United States

BACk.ROUND Improved adenoma detection rate(ADR)has been demonstrated w.th artificial intelligence(AI)-assisted ***,data on the real-w.rld appli-cation of AI and its effect on colorectal cancer(CRC)screening outcomes is *** To analyze the long-term impact of AI on a diverse at-risk.patient population undergoing diagnostic colonoscopy for positive CRC screening tests or *** AI softw.re(GI Genius,Medtronic)w.s implemented into the standard proced-ure protocol in November *** w.s collected on patient demographics,procedure indication,polyp size,location,and *** screening outcomes w.re evaluated before and at different intervals after AI introduction w.th one year of *** w. evaluated 1008 colonoscopies(278 pre-AI,255 early post-AI,285 established post-AI,and 190 late post-AI).The ADR w.s 38.1%pre-AI,42.0%early post-AI(P=0.77),40.0%established post-AI(P=0.44),and 39.5%late post-AI(P=0.77).There w.re no significant differences in polyp detection rate(PDR,baseline 59.7%),advanced ADR(baseline 16.2%),and non-neoplastic PDR(baseline 30.0%)before and after AI *** In patients w.th an increased pre-test probability of having an abnormal colonoscopy,the current generation of AI did not yield enhanced CRC screening metrics over high-quality *** the potential of AI in colonoscopy is undisputed,current AI technology may not universally elevate screening metrics across all situations and patient *** studies that analyze different AI systems across various patient populations are needed to determine the most effective role of AI in optimizing CRC screening in clinical practice.

关键词： Artificial intelligence Colonoscopy Adenoma detection rate Screening Colorectal adenoma

pH modeling for maximum dissolved organic matter removal by enhanced coagulation

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Journal of Environmental Sciences 2012年第2期24卷 276-283页

作者： Jiank.n Xie Dongsheng w.ng John van Leeuw.n Yanmei Zhao Linan Xing Christopher w. k. chow State k.y Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China SA w.ter Centre for w.ter Management and Reuse NBE Universit of South Australia Australia Australian w.ter Quality Centre SA Water 250 Victoria Square Adelaide SA 5000 Australia

Correlations betw.en raw.w.ter characteristics and pH after enhanced coagulation to maximize dissolved organic matter（DOM） removal using four typical coagulants（FeCl3,Al2（SO4）3,polyaluminum chloride（PACl） and high performance polyaluminum chloride（HPAC）） w.thout pH control w.re *** correlations w.re analyzed on the basis of the raw.w.ter quality and the chemical and physical fractionations of DOM of thirteen Chinese source w.ters over three *** w.s found that the final pH after enhanced coagulation for each of the four coagulants w.s in？uenced by the content of removable DOM（*** and higher apparent molecular w.ight（AMw. DOM）,the alk.linity and the initial pH of raw.w.ter.A set of feed-forw.rd semi-empirical models relating the final pH after enhanced coagulation for each of the four coagulants w.th the raw.w.ter characteristics w.re developed and optimized based on correlation *** established models w.re preliminarily validated for prediction purposes,and it w.s found that the deviation betw.en the predicted data and actual data w.s *** result demonstrated the potential for the application of these models in practical operation of drink.ng w.ter treatment plants.

关键词： enhanced coagulation modeling DOM fractionation pH control

Nonlinear Pulse Compression and Reshaping Using Cross-Phase Modulation in a Dispersion-Shifted Fiber

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光学学报 2003年第S1期23卷 395-396页

作者： S. w. Chan k. k. chow C. Shu The Chinese University of Hong k.ng Department of Electronic Engineering Shatin N.T. Hong KongThe Chinese University of Hong Kong Department of Electronic Engineering Shatin N.T. Hong KongThe Chinese University of Hong Kong Department of Electronic Engineering Shatin N.T. Hong Kong

Nonlinear pulse compression has been demonstrated by cross-phase modulation in a dispersion-shifted fiber. The output is obtained from filtering of the broadened optical spectrum and a pulse w.dth reduction from 61 to... 详细信息

关键词： DSF of line on IEEE as in Nonlinear Pulse Compression and Reshaping Using Cross-Phase Modulation in a Dispersion-Shifted Fiber EDFA XPM dBm

Synthesis,Structures,and Chiroptical Properties of NBN-Doped Helicenes w.th Boron Atoms in the Inner Rims

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Precision Chemistry 2024年第1期2卷 28-39页

作者： w.iw.n Zhuang Yujian Liu Ziqi Deng Yu Guo Philip C.Y.chow David Lee Phillips w.i Jiang Zhaohui w.ng Junzhi Liu State k.y Laboratory of Synthetic Chemistry HKU-CAS Joint Laboratory on New Materials and Department of ChemistryThe University of Hong KongPokfulamHong KongChina k.y Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084China Department of Mechanical Engineering The University of Hong KongPokfulamHong KongChina

The precise synthesis of helicenes w.th topologically defined length and specific heteroatomic perturbation in the screw.lik. conjugated sk.letons plays an emerging role in the manipulation of chiral ***,selective,and programmable routes to helicenes or heterohelicenes are highly desirable yet challenging for structure-chiroptical property relationship ***,w. report the synthesis and characterization of NBN-doped helicenes w.th boron atoms in the inner rims,enabled by the highly regioselective one-pot borylation of rationally designed precursors w.th,namely,fold-in or pan-out *** incorporation of nonbonded boron and nitrogen atoms resulted in narrow.band emission and improved optical properties for the single-stranded carbon *** addition,numbers and arrangement modes of fused six-membered rings have distinct effects on configurational stability and chiroptical properties,revealing that BN-[6]H w.th strong circular dichroism is a promising candidate for chiral *** combination of experimental and theoretical studies on these helical structures might provide insights into the design of helically chiral small-molecule-based sensors or emitters.

关键词： Nitrogen-boron Helicenes Borylation Chiroptical properties Narrow.band emission

变废为宝:“蓝色循环”海洋塑料废物管理新策略

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Science Bulletin 2024年第8期69卷 993-996页

作者：余灏轩 Izni Zahidi chow Ming Fai 梁东方 DagØivind Madsen Department of Civil Engineering School of EngineeringMonash University MalaysiaBandar Sunway 47500Malaysia Monash Climate-Resilient Infrastructure Research Hub(M-CRInfra) School of EngineeringMonash University MalaysiaBandar Sunway 47500Malaysia Department of Engineering University of CambridgeCambridge CB21PZUK Davis School of Business Colorado Mesa UniversityGrand Junction 81501-3122USA

The"Blue Circle"vision,initiated by Zhejiang Province in China,represents a groundbreak.ng advancement in addressing marine plastic *** more than just an innovative concept,it embodies a future-forw.rd approach to managing marine plastic w.ste,revealing the untapped potential in w.at w.s previously considered mere *** initiative,marrying scientific innovation w.th advanced technology,has been rightfully ack.ow.edged w.th the prestigious2023 United Nations"Champions of the Earth"aw.rd,recognizing its innovative strategy in environmental stew.rdship(https://***/a/202310/31/***).

关键词： break.ng debris initiated