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Gastroesophageal reflux disease is an uncommon condition in Asia: evidence and possible explanations

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World Journal of Gastroenterology 1999年第1期5卷 9-11页

作者： ho Khek Yu National University of singapore 新加坡

ＤＥＦＩＮＩＴＩＯＮＳＧａｓｔｒｏｅｓｏｐｈａｇｅａｌｒｅｆｌｕｘｔｈａｔｐｒｅｄｉｓｐｏｓｅｓａｎｉｎｄｉｖｉｄｕａｌｔｏｔｈｅｒｉｓｋｏｆｐｈｙｓｉｃａｌｃｏｍｐｌｉｃａｔｉｏｎｓ，ｏｒｐｒｏｄｕｃｅｓｓｙｍｐ... 详细信息

ＤＥＦＩＮＩＴＩＯＮＳＧａｓｔｒｏｅｓｏｐｈａｇｅａｌｒｅｆｌｕｘｔｈａｔｐｒｅｄｉｓｐｏｓｅｓａｎｉｎｄｉｖｉｄｕａｌｔｏｔｈｅｒｉｓｋｏｆｐｈｙｓｉｃａｌｃｏｍｐｌｉｃａｔｉｏｎｓ，ｏｒｐｒｏｄｕｃｅｓｓｙｍｐｔｏｍｓｌｅａｄｉｎｇｔｏｓｉｇｎ...

关键词： gastroesophageal reflux esophagitis Barrett′s esophagus hiatus hernia Helicobacter pylori gastric acid

Optical Network Optimization(Invited Paper)

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光学学报 2003年第S1期23卷 681-682页

作者： Kwok-wai Cheung Michael K.s. ho Department of Information Engineering The Chinese University of Hong Kong Shatin N.T. Hong Kong SAR ChinaDepartment of Information Engineering The Chinese University of Hong Kong Shatin N.T. Hong Kong SAR China

A novel low-complexity framework for designing survivable optical mesh networks with undetermined topology is presented. By jointly optimizing the topology planning, working- and spare-capacity planning, a cost saving... 详细信息

关键词： link or Optical Network Optimization Invited Paper with been into length of

Possibility of solid Hydrometeor Growth Zone Identification Using Radar spectrum Width

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Advances in Atmospheric sciences 2023年第2期40卷 317-332页

作者： sung-ho sUH Eun-ho ChoI hong-Il KIM Woonseon JUNG Flight safety Technology Division NARO Space CenterKorea Aerospace Research Institute(KARI)508 Haban-roBongrae-myeonGoheung-gunJeollanam-do 59571Republic of Korea Research Applications Department National Institute of Meteorological Sciences33Seohobuk-roSeoqwipo-siJeju-do 63568Republic of Korea

In this study,the correlation between simulated and measured radar velocity spectrum width(σ_(v))is *** results show that the dendrites growth zones(DGZs)and needles growth zones(NGZs)mostly contain dendrites(DN)and needles(NE),***σ_(v) zones(1.1s^(-1))s^(-1))spectively)could be identified in the case studies(27 and 28 February 2016)near altitudes corresponding to temperatures of–15°C and–5°C,according to the Japan Meteorological Agency and mesoscale model reanalysis *** particles with diverse particle shapes were observed in the DGZ withσ_(v)>1.2 m s^(-1),a differential reflectivity(ZDR)higher than 0 dB,and a cross-correlation coefficient(ρhv)less than *** contrast,prolate particles with relatively uniform shapes were observed in the NGZ withσ_(v)s^(-1),a ZDR less than 0 dB,andρhv higher than *** simulation results show that the DN exhibited a largerσ_(v) compared to the NE,and this observedσ_(v) was strongly dependent on the wind fluctuations(v’)due to turbulence or wind *** contrast,the NE exhibited a significantly smallσ_(v)~0.55 m s^(-1),which converges irrespective of v’.In addition,a strong correlation between the measuredσ_(v) values at five radar elevation angles(θ=6.2°,9.1°,13.1°,19°,and 80°)and those simulated in this study confirmed the significance of the analysis results.

关键词： spectrum width weather radar aerodynamic properties dendritic growth zone hydrometeor classifications

Computational fluid dynamics simulation of the wind flow over an airport terminal building

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2010年第6期11卷 389-401页

作者： Chun-ho LIU Dennis Y.C.LEUNG Alex C.s.MAN P.W.CHAN Department of Mechanical Engineering The University of Hong Kong hong Kong Observatory

Turbulence in the wake generated by wind flow over buildings or obstacles may produce complex flow patterns in downstream *** include the recirculating flow and wind deficit areas behind an airport terminal building and their potential impacts on the aircraft landing on nearby runways.A computational fluid dynamics(CFD) simulation of the wind flow over an airport terminal building was performed in this study of the effect of the building wake on landing *** normal meteorological conditions,the studied airport terminal building causes limited effects on landing aircraft because most of the aircraft have already landed before entering the turbulent wake *** simulating the approach of a tropical cyclone,additional CFD sensitivity tests were performed to study the impacts of building wake under extreme meteorological *** was found that,in a narrow range of prevalent wind directions with wind speeds larger than a certain threshold value,a substantial drop in wind speed(>3.6 m/s) along the glide path of aircraft was observed in the building *** CFD results also showed that under the most critical situation,a drop in wind speed as large as 6.4 m/s occurred right at the touchdown point of landing aircraft on the runway,an effect which may have a significant impact on aircraft *** study indicated that a comprehensive analysis of the potential impacts of building wake on aircraft operations should be carried out for airport terminals and associated buildings in airfields to ensure safe aviation operation under all meteorological conditions and to facilitate implementation of precautionary measures.

关键词： Aviation safety Building aerodynamics Computational fluid dynamics (CFD) k-e turbulence model Tropicalcyclone

Existence results for degenerate p(x)-Laplace equations with Leray-Lions type operators

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science China Mathematics 2017年第1期60卷 133-146页

作者： ho Ky sIM Inbo Department of Mathematics University of Ulsan Ulsan 680-749 South Korea

We show the existence and multiplicity of solutions to degenerate p(x)-Laplace equations with Leray-Lions type operators using direct methods and critical point theories in Calculus of Variations and prove the uniqueness and nonnegativeness of solutions when the principal operator is monotone and the nonlinearity is nonincreasing. Our operator is of the most general form containing all previous ones and we also weaken assumptions on the operator and the nonlinearity to get the above results. Moreover, we do not impose the restricted condition on p(x) and the uniform monotonicity of the operator to show the existence of three distinct solutions.

关键词： p(x)-Laplacian weighted variable exponent Lebesgue-sobolev spaces multiplicity a priori bound Leray-Lions type operators

K-theoretic classification of fermionic operator mixings in holographic conformal field theories

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science Bulletin 2016年第14期61卷 1115-1125页

作者： shih-Hao ho Feng-Li Lin Department of Physics Taiwan Normal University

In this paper, we apply the K-theory scheme of classifying the topological insulators/superconductors to classify the topological classes of the massive multi-flavor fermions in anti-de sitter(Ad s) space. In the context of Ad s/conformal field theory(CFT) correspondence, the multi-flavor fermionic mass matrix is dual to the pattern of operator mixing in the boundary CFT. Thus, our results classify the possible patterns of operator mixings among fermionic operators in the holographic CFT.

关键词： Topological insulators/superconductorssPT phases Ads/CFT correspondence K-theoretical classification Bulk/Edgecorrespondence holographic CFT

REVIEW 6G and Internet of Things:a survey

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Journal of Management Analytics 2021年第2期8卷 316-332页

作者： Jin ho Kim College of Business Lewis UniversityRomeovilleILUSA

The 5G networks which have begun to spread worldwide are expected to contribute to an increase in the use of Internet of Things(IoT)technologies and applications,which require massive connectivity,security,and ultra-low ***,it is known that 5G alone is not sufficient for many IoT devices to exchange various types of data in real *** constraints promote the emergence of 6G technologies which can support higher network capacity,lower latency,and faster data transmission than 5G *** understand the current trends in 6G research and their relation to IoT,this paper introduces the main drivers of 6G technology,describes 6G’s enabling technologies,summarizes current 6G research,and introduces the possible applications of 6G to IoT technologies and service areas.

关键词： 6G Internet of Things IoT terahertz extended reality

Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang sonata s Y Yau Kwok-Fai so Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNs Regeneration(Ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina state Key Laboratory of Brain and Cognitive science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise

Multidimensional Hybrid Architecture Encapsulating Cobalt Oxide Nanoparticles into Carbon Nanotube Branched Nitrogen-Doped Reduced Graphene Oxide Networks for Lithium–sulfur Batteries

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Energy & Environmental Materials 2022年第2期5卷 555-564页

作者： Jeong seok Yeon Young Hun Ko Tae ho Park Hyunyoung Park Jongsoon Kim ho seok Park s.hool of Chemical Engineering College of EngineeringSungkyunkwan University2066Seobu-roJangan-guSuwon-si Gyeonggi-do 440-746Korea Advanced Batteries Research Center Korea Electronics Technology Institute25Saenari-roBundang-guSeongnam-si Gyeonggi-do 13509Korea Department of Energy science Sungkyunkwan University2066Seobu-roJangan-guSuwon-si Gyeonggi-do 440-746Korea Department of Health sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746South Korea

Lithium–sulfur batteries(LsBs)are regarded as promising candidates for the next-generation energy storage devices owing to their high-theoretical capacity(1675 mAh g^(−1))and affordable ***,several limitations of LsBs such as the lithium polysulfide shuttle,large volume expansion,and low electrical conductivity of sulfur need to be resolved for practical *** address these limitations,herein,a multidimensional architectured hybrid(Co@CNT/nG),where Co_(3)O_(4) nanoparticles are encapsulated into threedimensional(3D)porous N-doped reduced graphene oxide interconnected with carbon nanotube(CNT)branches,is synthesized through a simple pyrolysis *** synergistic effect achieved through the homogeneously distributed and encapsulated Co_(3)O_(4) nanoparticles,the interconnected CNT branches,and the 3D hierarchical porous structure and N-doping of Co@CNT/nG significantly suppresses the shuttle effect of lithium polysulfides and enhances the conversion redox kinetics for the improved sulfur *** validate this effect through various measurements including symmetric cells,Li_(2)s nucleation,shuttle currents,Tafel slopes,diffusion coefficients,and post-mortem ***,Co@CNT/nG-70s-based LsB cells achieve a high-specific capacity of 1193.1 mAh g^(−1) at 0.1 C and a low capacity decay rate of 0.030%per cycle for 700 cycles at 5 C,delivering a high areal capacity of 5.62 mAh cm^(−2) even with a loading of 6.5 mg cm^(−2).

关键词： graphene/CNT hybrid lithium-sulfur batteries multidimensional architecture nanoparticle encapsulation redox promoter