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Near-infrared brain functional characteristics of mild cognitive impairment with sleep disorders

World Journal of Psychiatry 2025年第1期15卷 106-116页

作者： Heng Liao Sha Liao Yu-Jiao Gao Xi Wang Li-Hong Guo Su Zheng Wu Yang yi-Nan dai Sleep Psychosomatic Medicine Center Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Integrated Chinese and Western Medicine Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Orthopaedics Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Rehabilitation Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina

BACKGROUND Mild cognitive impairment(MCI)has a high risk of progression to Alzheimer’s *** disease is often accompanied by sleep disorders,and whether sleep disorders have an effect on brain function in patients with MCI is *** To explore the near-infrared brain function characteristics of MCI with sleep *** A total of 120 patients with MCI(MCI group)and 50 healthy subjects(control group)were *** subjects underwent the functional near-infrared spec-troscopy *** baseline data,Mini-Mental State Examination,Montreal Cognitive Assessment scale,fatigue severity scale(FSS)score,sleep parameter,and oxyhemoglobin(Oxy-Hb)concentration and peak time of functional near-infrared spectroscopy test during the task *** relationship between Oxy-RESULTS Compared with the control group,the FSS score of the MCI group was higher(t=11.310),and the scores of Pittsburgh sleep quality index,sleep time,sleep efficiency,nocturnal sleep disturbance,and daytime dysfunction were higher(Z=-10.518,-10.368,-9.035,-10.661,-10.088).Subjective sleep quality and total sleep time scores were lower(Z=-11.592,-9.924).The sleep efficiency of the MCI group was lower,and the awakening frequency,rem sleep latency period,total sleep time,and oxygen desaturation index were higher(t=5.969,5.829,2.887,3.003,5.937).The Oxy-Hb concentration at T0,T1,and T2 in the MCI group was lower(t=14.940,11.280,5.721),and the peak time was higher(t=18.800,13.350,9.827).In MCI patients,the concentration of Oxy-Hb during T0 was negatively correlated with the scores of Pittsburgh sleep quality index,sleep time,total sleep time,and sleep efficiency(r=-0.611,-0.388,-0.563,-0.356).It was positively correlated with sleep efficiency and total sleep time(r=0.754,0.650),and negatively correlated with oxygen desaturation index(r=-0.561)and FSS score(r=-0.526).All comparisons were P<*** Patients with MCI and sleep disorders have lower near-infrared brain function than norm

关键词： Mild Cognitive impairment Sleep disorders Near-infrared Brain functional Characteristics

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Faber-Krahn Inequality for Robin Problems Involving p-Laplacian

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Acta Mathematicae Applicatae Sinica 2011年第1期27卷 13-28页

作者： Qiu-yi dai Yu-xia Fu Department of Mathematics Hunan Normal University Changsha 410081 China Group of Mathematics Dongguan Polytechinic College Dongguan 523808 China

The eigenvalue problem for the p-Laplace operator with Robin boundary conditions is considered in this paper. A Faber-Krahn type inequality is proved. More precisely, it is shown that amongst all the domains of fixed ... 详细信息

关键词： Robin problem p-Laplacian Faber-Krahn type inequality

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Existence and Nonexistence of Global Classical Solutions to Porous Medium and Plasma Equations with Singular Sources

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Acta Mathematica Sinica,English Series 2006年第2期22卷 485-496页

作者： Qiu yi dai Li Hui PENG Department of Mathematics Hunan Normal University Department of Mathematics Zhejiang University

Let Ω be a bounded or unbounded domain in R~n. The initial-boundary value problem for the porous medium and plasma equation with singular terms is considered in this paper. Criteria for the appearance of quenching phenomenon and the existence of global classical solution to the above problem are established. Also, the life span of the quenching solution is estimated or evaluated for some domains.

关键词： Initial-boundary value problem Porous medium and plasma equation Quenching phenomenon Global classical solution

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Produced-water treatment: Application and research of combined fiber coalescence technique in offshore oilfield

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Petroleum Science 2023年第1期20卷 569-576页

作者： Pin-yi dai yi-Qian Liu Hao Lu Yu-Dong Li Qiang Yang School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai200237China

When the process of extraction of oil from an offshore oilfield enters the advanced stages,the water content in the extracted fluid can be above 90%.The water quality is complex with many types of pollutants and highly emulsified ***,a key consideration in the production process of offshore oilfields is the efficient and economical treatment of the oil-containing produced water to make it suitable for discharge and recover oil *** this study,we developed a hydrophilic and hydrophobic combined fiber coalescence separator with composite fiber shapes using fiber induction and X/*** separator is designed based on experimental observations of the mechanism of structure coalescence in the physical oil removal method.A pilot test was performed on an oil exploration platform in the Bohai *** the designed flow rate,the separator reduced the total concentration of petroleum in the produced water from 2000 to 3000 mg/L to below 60 mg/L,with an average oil removal efficiency of 98.24%.Furthermore,it effectively reduced the number of organic compounds present in the water from 120 to 17 and removed 70% of the *** test results show that the proposed device can be used fr produced-water treatment on offshore platforms.

关键词： Combined fiber coalescence Production water Oil-water separation X/U weaving

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MPFS:A truly scalable router architecture for next generation Internet

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Science in China(Series F) 2008年第11期51卷 1761-1771页

作者： SUN ZhiGang dai yi GONG ZhengHu Department of Computer Science National University of Defense Technology Changsha 410073 China

A new generation architecture of IP routers called massive parallel forwarding and switching （MPFS） is proposed, which is totally different from modern routers. The basic idea of MPFS is mapping complicated forwarding process into multilevel scalable switch fabric so as to implement packet forwarding in a pipelining and distributed way. This processing mechanism is named forwarding in switching （FIS）. By interconnecting multi-stage, lower speed components, called forwarding and switching nodes （FSN）, MPFS achieves better scalability in forwarding and switching performance just like MPP. We put emphasis upon IPv6 lookup problem in MPFS and propose a method for partitioning IPv6 FIB and mapping them to switch fabric. Simulation and computation results suggest that MPFS routers can support line-speed forwarding with a million of IPv6 prefixes at 40 Gbps. We also propose an implementation of 160 Tbps core router based on MPFS architecture at last.

关键词： IP routers forwarding and switching scalability architecture

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Quantum parameter estimation in a spin-boson dephasing quantum system by periodical projective measurements

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Chinese Physics B 2018年第4期27卷 242-249页

作者： Le Yang Hong-yi dai Ming Zhang College of Artificial Intelligence National University of Defense Technology Changsha 410073 China Department of Physics National University of Defense Technology Changsha 410073 China Interdisciplinary Center for Quantum Information National University of Defense Technology Changsha 410073 China

In this paper,we explore how to estimate the phase damping parameter γ and the tunneling amplitude parameter ？from a spin-boson dephasing quantum model by periodical projective *** preparation of initial states is accomplished by performing the period measurements in our *** parameter γ can be always estimated when projective measurement bases are chosen as θ = π/2 and φ = *** on the estimated value of γ and the interval information of ？,we can select another measurement bases（θ = π/4 and φ = π/2） to obtain the estimated value of ？.A coherent control is indispensable to estimate ？ if γ is in the interval of ？;whereas the control is not necessary if γ is out of the known interval of ？.We establish the relation between the optimal period time and the parameter γ or ？ in terms of Fisher *** the optimal measurement period cannot be selected beforehand,the aforementioned relation can be utilized to adjust the measurement period to approach the optimal one.

关键词： parameter estimation periodical projective measurement spin-boson model dephasing quantum system

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Design and verification of a lightweight reliable virtual machine monitor for a many-core architecture

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Frontiers of Computer Science 2013年第1期7卷 34-43页

作者： Yuehua dai yi SHI Yong QI Jianbao REN Peijian WANG School of Electronic and Information Engineering Xi'an Jiaotong University Xi' an 710049 China

Virtual machine monitors （VMMs） play a central role in cloud computing. Their reliability and availability are critical for cloud computing. Virtualization and device emu- lation make the VMM code base large and the interface be- tween OS and VMM complex. This results in a code base that is very hard to verify the security of the VMM. For exam- ple, a misuse of a VMM hyper-call by a malicious guest OS can corrupt the whole VMM. The complexity of the VMM also makes it hard to formally verify the correctness of the system＇s behavior. In this paper a new VMM, operating sys- tem virtualization （OSV）, is proposed. The multiprocessor boot interface and memory configuration interface are virtu- alized in OSV at boot time in the Linux kernel. After booting, only inter-processor interrupt operations are intercepted by OSV, which makes the interface between OSV and OS sim- ple. The interface is verified using formal model checking, which ensures a malicious OS cannot attack OSV through the interface. Currently, OSV is implemented based on the AMD Opteron multi-core server architecture. Evaluation re- sults show that Linux running on OSV has a similar perfor- mance to native Linux. OSV has a performance improvement of 4%-13% over Xen.

关键词： virtual machine monitor model operating sys tem many core formal verification

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Microstructure and mechanical properties of high-strength low alloy steel by wire and arc additive manufacturing

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International Journal of Minerals,Metallurgy and Materials 2020年第7期27卷 933-942页

作者： yi-li dai Sheng-fu Yu An-guo Huang Yu-sheng Shi State Key Laboratory of Material Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China

A high-building multi-directional pipe joint(HBMDPJ)was fabricated by wire and arc additive manufacturing using high-strength low-alloy(HSLA)*** microstructure characteristics and transformation were observed and *** results show that the forming part includes four *** solidification zone solidifies as typical columnar crystals from a molten *** complete austenitizing zone forms from the solidification zone heated to a temperature greater than 1100℃,and the typical columnar crystals in this zone are difficult to *** partial austenitizing zone forms from the completely austenite zone heated between Ac1(austenite transition temperature)and1100℃,which is mainly equiaxed *** several thermal cycles,the partial austenitizing zone transforms to the tempering zone,which consistes of fully equiaxed *** the solidification zone to the tempering zone,the average grain size decreases from 75 to20μ*** mechanical properties of HBMDPJ satisfies the requirement for the intended application.

关键词： wire and arc additive manufacturing high strength low alloy steel microstructure inclusions fine grain ferrite mechanical properties

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Cationic ring-opening polymerization of 3,3-bis(chloromethyl)oxacyclobutane in ionic liquids

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Chinese Chemical Letters 2007年第10期18卷 1187-1190页

作者： Yuan Yuan Wang Wei Li Li yi dai Department of Chemistry East China Normal University Shanghai 200062 China School of Chinese Medicine SDUTCM Jinan 250014 China

Cationic ring-opening polymerization of 3,3-bis（chloromethyl）oxacyclobutane catalyzed by ***2 was carded out in ionic liquids [bmim]BF4 and [bmim]PF6. The influences of BCMO concentration and molar ratio of BCMO/***2 on the molecular weights and yield of PBCMO were investigated. The polymerization in ionic liquids proceed to high conversions, although molecular weights are limited, similar to polymerization in organic solvent such as CH2Cl2. Follow a viewpoint of green chemistry, we feel ionic liquid [bmim]BF4 is superior to [bmim]PF6. Extracting [bmim]PF6 from the product using organic solvent as extractant limits its advantage as a green reaction media.

关键词： Ionic hquid 3,3-Bis(chloromethyl)oxacyclobutane Cationic ring-opening polymerization Characterization

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Statistical Downscaling of FGOALS-s2 Projected Precipitation in Eastern China

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Atmospheric and Oceanic Science Letters 2014年第5期7卷 388-394页

作者： dai yi-Feng LIU yi-Min JIN Ji-Ming The National Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Tongji University Zhejiang College Utah State University UT 84341 USA

A statistical regression downscaling method was used to project future changes in precipitation over eastern China based on Phase 5 of the Coupled Model Intercomparison Project （CMIPS） the Representative Concentration Pathway （RCP） scenarios simulated by the second spectral version of the Flexible Global Ocean- Atmosphere-Land System （FGOALS-s2） model. Our val- idation results show that the downscaled time series agree well with the present observed precipitation in terms of both the annual mean and the seasonal cycle. The regres- sion models built from the historical data are then used to generate future projections. The results show that the en- hanced land-sea thermal contrast strengthens both the subtropical anticyclone over the western Pacific and the east Asian summer monsoon flow under both RCPs. However, the trend of precipitation in response to warming over the 21 st century are different across eastern Chi- na under different RCPs. The area to the north of 32°N is likely to experience an increase in annual mean precipitation, while for the area between 23°N and 32°N mean precipitation is projected to decrease slightly over this century under RCP8.5. The change difference between scenarios mainly exists in the middle and late century. The land-sea thermal contrast and the associated east Asian summer monsoon flow are stronger, such that precipitation increases more, at higher latitudes under RCP8.5 compared to under RCP4.5. For the region south of 32°N, rainfall is projected to increase slightly under RCP4.5 but decrease under RCP8.5 in the late century. At the high resolution of 5 km, our statistically downscaled results for projected precipitation can be used to force hydrological models to project hydrological processes, which will be of great benefit to regional water planning and management.

关键词： regional precipitation projection statistical downscalin eastern China

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