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Mobile Web Augmented Reality in 5G and Beyond:Challenges, Opportunities, and Future Directions

China Communications 2019年第9期16卷 141-154页

作者： Xiuquan qiao Pei Ren Guoshun Nan ling Liu Schahram Dustdar Junliang Chen State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China College of Computing Georgia Institute of TechnologyAtlantaGA 30332USA Distributed Systems Group TU Wien1040 ViennaAustria

The popularity of wearable devices and smartphones has fueled the development of Mobile Augmented Reality(MAR),which provides immersive experiences over the real world using techniques,such as computer vision and deep ***,the hardware-specific MAR is costly and heavy,and the App-based MAR requires an additional download and installation and it also lacks cross-platform *** limitations hamper the pervasive promotion of *** paper argues that mobile Web AR(MWAR)holds the potential to become a practical and pervasive solution that can effectively scale to millions of end-users because MWAR can be developed as a lightweight,cross-platform,and low-cost solution for end-to-end delivery of *** main challenges for making MWAR a reality lie in the low efficiency for dense computing in Web browsers,a large delay for real-time interactions over mobile networks,and the lack of *** good news is that the newly emerging 5G and Beyond 5G(B5G)cellular networks can mitigate these issues to some extent via techniques such as network slicing,device-to-device communication,and mobile edge *** this paper,we first give an overview of the challenges and opportunities of MWAR in the 5G *** we describe our design and development of a generic service-oriented framework(called MWAR5)to provide a scalable,flexible,and easy to deploy MWAR *** evaluate the performance of our MWAR5 system in an actually deployed 5G trial network under the collaborative configurations,which shows encouraging ***,we also share the experiences and insights from our development and deployment,including some exciting future directions of MWAR over 5G and B5G networks.

关键词： 5G edge computing augmentedreality mobile augmented reality Web augmentedreality

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Novel guanidinium-based ionic liquids as stationary phases for capillary gas chromatography

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Chinese Chemical Letters 2010年第9期21卷 1133-1136页

作者： Li Zhen qiao Kai Lu Mei ling Qi Ruo Nong Fu School of Sciences Beijing Institute of TechnologyBeijing 100081China

The present study describes guanidinium-based ionic liquids（GBILs） as stationary phases for capillary gas chromatography （CGC） and to the best of our knowledge,no related reports are available up to *** this study,a hexaalkylguanidinium ionic liquid（DOTMG-NTf;） was synthesized and coated statically onto capillary *** of the stationary phase was evaluated by separating Grob test mixture,test mixture,alcohols mixture,and fatty acid methyl esters mixture,and thermal stability was investigated as *** present study demonstrates that GBILs as CGC stationary phases exhibit satisfactory selectivity and thermal stability and have a great potential as new candidates for CGC stationary phases.

关键词： Guanidinium-based ionic liquids Capillary gas chromatography Stationary phase

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Synthesis characterization and improved electrochemical performance of Li2FeSiO4/C as cathode for lithium-ion battery by metal doping

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Progress in Natural Science:Materials International 2019年第2期29卷 111-118页

作者： ling Li Enshan Han Shunpan qiao Hui Liu Yake Shi Weiliang Yuan School of Chemical Engineering and Technology Hebei University of Technology

In this paper, Li2FeSi0.98M0.02O4/C（M = Mg, Zn, Co, Mn, Ni） was synthesized as cathode material for lithium ion battery by solid-state method. The results show that the materials doped with Mg and Zn at the Si-sites have good initial discharge capacity. Then Li2FeSi1-xMxO4/C（M = Mg, Zn; x = 0.01, 0.02, 0.03, 0.05） were also synthesized via solid-state method. It is concluded that Li2FeSi0.99Mg0.01O4/C and Li2FeSi0.98Zn0.02O4/C have better initial discharge capacity which is 125 mAh/g and 166.2 mAh/g, respectively. The capacity of Li2Fe0.98Zn0.02SiO4/C is 157.3 m Ah/g after 10 cycles at 0.1 C, and the capacity retention rate is 94.6%. The Li+diffusion coefficient of Li2FeSi0.98Zn0.02O4/C is higher than that of pure phase materials by one order of magnitude. The Li2FeSi0.99Mg0.01O4/C and Li2FeSi0.98Zn0.02O4/C were tested by XRD and SEM. XRD patterns indicate that the crystal structure of Li2FeSiO4is not changed after being doped with metal ion at the Si-site. The SEM image indicates that no obvious agglomeration is detected in these materials. Li2FeSi0.98Zn0.02O4/C processes better electrochemical performance analyzed by EDS、XPS and FT-IR spectra. The data prove that Si4+is successfully replaced by Zn2+in the crystal structure of Li2FeSiO4.

关键词： Li2FeSiO4 Mg Zn doping Solid-state method Li-ion battery Electrochemical performance

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Regulation role of miR-204 on SIRT1/VEGF in metabolic memory induced by high glucose in human retinal pigment epithelial cells

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1232-1237页

作者： qiao-ling Lai Ting Xie Wei-Dong Zheng Yan Huang Department of Ophthalmology Renmin Hospital of Wuhan UniversityWuhan 460060Hubei ProvinceChina Department of Ophthalmology The First Affiliated Hospital of Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina Department of Ophthalmology&Optometry Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina

AIM:To examine the regulatory role of microRNA-204(miR-204)on silent information regulator 1(SIRT1)and vascular endothelial growth factor(VEGF)under highglucose-induced metabolic memory in human retinal pigment epithelial(hRPE)***:Cells were cultured with either normal(5 mmol/L)or high D-glucose(25 mmol/L)concentrations for 8d to establish control and high-glucose groups,*** induce metabolic memory,cells were cultured with 25 mmol/L D-glucose for 4d followed by culture with 5 mmol/L D-glucose for *** addition,exposed in 25 mmol/L D-glucose for 4d and then transfected with 100 nmol/L miR-204 control,miR-204 inhibitor or miR-204 mimic in 5 mmol/L D-glucose for *** reverse transcription-polymerase chain reaction(RT-qPCR)was used to detect miR-204 mRNA ***1 and VEGF protein levels were assessed by immunohistochemical and Western *** cytometry was used to investigate apoptosis ***:It was found that high glucose promoted miR-204 and VEGF expression,and inhibited SIRT1 activity,even after the return to normal glucose culture *** of miR-204 promoted apoptosis inhibiting SIRT1 and increasing VEGF ***,downregulation of miR-204 produced the opposite ***:The study identifies that miR-204 is the upstream target of SIRT1and VEGF,and that miR-204 can protect hRPE cells from the damage caused by metabolic memory through increasing SIRT1 and inhibiting VEGF expression.

关键词： human retinal pigment epithelial metabolic memory microRNA-204 silent information regulator 1 vascular endothelial growth factor high-glucose

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A novel differential multiuser detection algorithm for multiuser MIMO-OFDM systems

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第10期11卷 798-807页

作者： Zheng-min KONG Guang-xi ZHU qiao-ling TONG Yan-chun LI Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan 430074 China Wuhan National Lab for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

We propose an efficient low bit error rate(BER) and low complexity multiple-input multiple-output(MIMO) multiuser detection(MUD) method for use with multiuser MIMO orthogonal frequency division multiplexing(OFDM) *** is a hybrid method combining a multiuser-interference-cancellation-based decision feedback equalizer using error feedback filter(MIMO MIC DFE-EFF) and a differential *** proposed method,termed 'MIMO MIC DFE-EFF with a differential algorithm' for short,has a multiuser feedback *** describe the schemes of MIMO MIC DFE-EFF and MIMO MIC DFE-EFF with a differential algorithm,and compare their minimum mean square error(MMSE) performance and computational *** results show that a significant performance gain can be achieved by employing the MIMO MIC DFE-EFF detection algorithm in the context of a multiuser MIMO-OFDM system over frequency selective Rayleigh *** MIC DFE-EFF with the differential algorithm improves both computational efficiency and BER performance in a multistage structure relative to conventional DFE-EFF,though there is a small reduction in system performance compared with MIMO MIC DFE-EFF without the differential algorithm.

关键词： Multiuser detection(MUD) Orthogonal frequency division multiplexing(OFDM) Multiple-input multiple-output (MIMO) Decision feedback equalizer(DFE) Error feedback filter(EFF) Differential algorithm

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Major Mid-Late Holocene Cooling in the East China Sea Revealed by an Alkenone Sea Surface Temperature Record

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Journal of Ocean University of China 2014年第6期13卷 935-940页

作者： ZHAO Meixun DING ling XING Lei qiao Shuqing YANG Zuosheng Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of China Institute of Marine Organic Geochemistry Ocean University of China Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration College of Marine Geoscience Ocean University of China

Although the mid-late Holocene cold and dry event about 4000years ago （the 4ka event） has been observed almost globally, it was most prominent in terrestrial climate proxies from the lower latitudes. Here we evaluate the oceanic response to this event in terms of a Holocene sea surface temperature （SST） record reconstructed using the U^7 index for Core B3 on the continen- tal shelf of the East China Sea. The record reveals a large temperature drop of about 5~C from the mid-Holocene （24.7~C at 5.6ka） to the 4ka event （19.2~C at 3.8ka）. This mid-late Holocene cooling period in Core B3 correlated with （i） decreases in the East Asia summer monsoon intensity and （ii） the transition period with increased E1 Nifio/Southern Oscillation activities in the Equatorial Pa- cific. Our SST record provides oceanic evidence for a more global nature of the mid-late Holocene climate change, which was most likely caused by a southward migration of the Intertropical Converge Zone in response to the decreasing summer solar insolation in the Northern Hemisphere. However, the large SST drop around Core B3 indicates that the mid-late Holocene cooling was regionally amplified by the initiation/strengthening of eddy circulation/cold front which caused upwelling and resulted in additional SST de- crease. Upwelling during the mid-late Holocene also enhanced with surface productivity in the East China Sea as reflected by higher alkenone content around Core B3.

关键词： sea surface temperature alkenone East China Sea 4 ka ITCZ

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Induction of embryonic stem cells to hematopoietic cells in vitro

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Chinese Science Bulletin 2000年第18期45卷 1643-1648页

作者： XU ling qiao Chunping HUANG Shaoliang LI Shunong WU Xuan Department of Pediatrics Sun Yat-sen Memorial HospitalSun Yat-sen University of Medical SciencesGuangzhou 510120China Department of Pathophysiology Sun Yat-sen University of Medical SciencesGuangzhou 510089China Department of Physiology the Third Military Medical UniversityChongqing 400038China

In order to get hematopoietic cells from embryonic stem (ES) cells and to study development mechanisms of hematopoietic cells, the method of inducing embryonic stem cells to hematopoietic cells was explored by differenciating mouse ES cells and human embryonic cells in three stages. The differentiated cells were identified by flow cytometry, immunohistochemistry and Wright’s staining. The results showed that embryoid bodies (EBs) could form when ES cells were cultured in the medium with 2-mercaptoethanol (2-ME). However, cytokines, such as stem cell factor (SCF), thrombopoietin (TPO), interleukin-3 (IL-3), interleukin-6 (IL-6), erythropoietin (EPO) and granular colony stimulating factor (G-CSF), were not helpful for forming EBs. SCF, TPO and embryonic cell conditional medium were useful for the differentiation of mouse EBs to hematopoietic progenitors. Eighty-six percent of these cells were CD34+ after 6-d culture. Hematopoietic progenitors differentiated to B lymphocytes when they were cocultured

关键词： embryonic stem cell cytokine hematopoietic stem cell.

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Modification on crystallization of poly（vinylidene fluoride）（PVDF） by solvent extraction of poly（methyl methacrylate）（PMMA） in PVDF/PMMA blends

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Frontiers of Materials Science 2011年第4期5卷 388-400页

作者： Jing SUN Lu YAO qiao-ling ZHAO Jin HUANG Rui SONG Zhi MA ling-Hao HE Wei HUANG Yong-Mei HAO Key Laboratory of Surface and Interface Sciences of Henan Province Zhengzhou University of Light Industry Zhengzhou 450005 China Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China Laboratory of Advanced Polymer Materials Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

The crystallization modification of poly（vinylidene fluoride）（PVDF） was investigated for the blend films of PVDF and poiy（methyl methacrylate）（PMMA）. The mass crystallinity （Xc） and further, the β-phase content （F（β）） of PVDF, were studied for the asprepared blend films with different mass ratios. In addition, the variations of Xc and F（β） were systematically probed once the PMMA component was removed from the related blend systems. DSC, FTIR and XRD measurements all indicated that 1）Xc, F（β） and even the content of a-phase （F（a）） decreased with the addition of PMMA; 2） with the extraction of PMMA, both Xc and F（β） increased while F（a） decreased. It is worth noting that the increase of Xc and F（β） depended on the relative amount of extracted PMMA （EpMMA）, i.e., the more PMMA was removed, the more Xc and F（β） increased. These results reveal the hindrance effect from the PMMA constituent to the crystallization of PVDF, and consequently, this restriction would be released when the PMMA was extracted.

关键词： poly(vinylidene fluoride) poly(methyl methacrylate) blend film crystallization

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High cholesterol intake remodels cholesterol turnover and energy homeostasis in Nile tilapia(Oreochromis niloticus)

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Marine Life Science & Technology 2023年第1期5卷 56-74页

作者： Rui-Xin Li ling-Yun Chen Samwel M.Limbu Yu-Cheng Qian Wen-Hao Zhou Li-qiao Chen Yuan Luo Fang qiao Mei-ling Zhang Zhen-Yu Du LANEH School of Life SciencesEast China Normal UniversityShanghai200241China Department of Aquaculture Technology School of Aquatic Sciences and Fisheries TechnologyUniversity of Dar es SalaamP.O.Box 60091Dar es SalaamTanzania

The roles of dietary cholesterol in fish physiology are currently *** issue reflects the limited studies on the metabolic consequences of cholesterol intake in *** present study investigated the metabolic responses to high cholesterol intake in Nile tilapia(Oreochromis niloticus),which were fed with four cholesterol-contained diets(0.8,1.6,2.4 and 3.2%)and a control diet for eight *** fish-fed cholesterol diets showed increased body weight,but accumulated cholesterol(the peak level was in the 1.6%cholesterol group).Then,we selected 1.6%cholesterol and control diets for further *** high cholesterol diet impaired liver function and reduced mitochondria number in ***,high cholesterol intake triggered protective adaptation via(1)inhibiting endogenous cholesterol synthesis,(2)elevating the expression of genes related to cholesterol esterification and efflux,and(3)promoting chenodeoxycholic acid synthesis and ***,high cholesterol intake reshaped the fish gut microbiome by increasing the abundance of Lactobacillus *** Mycobacterium spp.,both of which are involved in cholesterol and/or bile acids ***,high cholesterol intake inhibited lipid catabolic activities through mitochondrialβ-oxidation,and lysosome-mediated lipophagy,and depressed insulin signaling *** catabolism was elevated as a compulsory response to maintain energy ***,although high cholesterol intake promoted growth,it led to metabolic disorders in *** the first time,this study provides evidence for the systemic metabolic response to high cholesterol intake in *** knowledge contributes to an understanding of the metabolic syndromes caused by high cholesterol intake or deposition in fish.

关键词： Cholesterol metabolism Metabolic response Energy metabolism Gut microbiome

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Synthesis of Glutathione Imprinted Polymer Particles via Controlled Living Radical Precipitation Polymerization

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Chinese Journal of Polymer Science 2015年第3期33卷 404-415页

作者：宋任远 Xiao-ling Hu Ping Guan Ji Li Li-wei Qian qiao-li Wang School of Natural and Applied Science Northwestern Polytechnical University

A general protocol was described for fabricating uniform molecularly imprinted polymer （MIP） particles via controlled living radical precipitation polymerization at ambient temperature. By adopting glutathione as model template, benzyl dithiocarbamate as iniferter agent, 4-vinylpyridine as monomer, and ethylene glycol dimethacrylate as cross-linker, it is demonstrated that the polymerization parameters including the iniferter concentration, monomer loading and molar ratio of cross-linker to functional monomer have profound effect on the final particle size and recognition property of the MIP particles. The batch static binding experiments were carried out to estimate the adsorption kinetics, adsorption isotherms and selective recognition of the MIP particles. The adsorption behavior followed the pseudo-second order kinetic model, revealing that the process was chemically carried out. Two adsorption isotherm models were applied to analyze equilibrium data, obtaining the best description by Langmuir isotherm model. In addition, the MIP particles also could selectively recognize glutathione over similar analogs, indicating the possibility for the separation and enrichment of the template from complicated matrices.

关键词： Molecularly imprinted polymer Controlled living radical polymerization Particle size Recognition Glutathione.

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