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Load balance in hierarchical routing network

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The Journal of China Universities of Posts and Telecommunications 2009年第6期16卷 72-77页

作者： HUA Yi-qiang liU Ai-bo lu yue-ming li hui ji yue-feng Key Laboratory of Information Photonics and Optical Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China Cisco Systems Inc. China Beijing 100022 China

In this article,the problem of load balance in hierarchical routing network is *** conventional shortest path first（SPF） algorithm over aggregated topology in hierarchical routing network may result in worse routing performance,a traffic sharing path selection algorithm and a variable weight scheme are put forward for hierarchical routing network,which can equilibrate the utilities of link resources and reduce the blocking probability of connections with the improvement on *** are conducted to evaluate proposed variable weight and traffics balance（VWTB） algorithm,which combines traffic sharing and variable *** the simulation results,it can be found that the proposed VWTB algorithm can balance the traffics and equilibrate the utilities of link resources significantly.

关键词： hierarchical routing load balance variable weight traffic sharing

Subchronic Oral Toxicity Evaluation of Sodium Dehydroacetate: A 90-day Repeated Dose Study in Rats

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Biomedical and Environmental Sciences 2022年第4期35卷 296-311页

作者： FANG jin liU Hai Bo zhi yuan feng Yong Quan WANG hui ling CUI Wen ming ZHANG ji yue WANG Hua li YU Zhou jiA xu Dong NHC Key Laboratory of Food Safety Risk Assessment Chinese Academy of Medical Science Research Unit(2019RU014)China National Center for Food Safety Risk AssessmentBeijing 100021China

Objective The present study was undertaken to evaluate the subchronic oral toxicity of sodium dehydroacetate(DHA-Na)and to determine the point of departure(POD),which is a critical factor in the establishment of an acceptable dietary *** DHA-Na was administered once daily by gavage to Sprague–Dawley rats at dose levels of 0.0,31.0,62.0,and 124.0 mg/kg BW per day for 90 days,followed by a recovery period of 4 weeks in the control and 124.0 mg/kg BW per day *** outcome parameters were mortality,clinical observations,body weights,food consumption,hematology and clinical biochemistry,endocrine hormone levels,and ophthalmic,urinary,and histopathologic *** benchmark dose(BMD)approach was applied to estimate the *** Significant decreases were found in the 62.0 and 124.0 mg/kg BW groups in terms of the body weight and food utilization rate,whereas a significant increase was found in the thyroid stimulating hormone levels of the 124.0 mg/kg BW ***,the 95%lower confidence limit on the BMD of 51.7 mg/kg BW was modeled for a reduction in body *** The repeated-dose study indicated the slight systemic toxicity of DHA-Na at certain levels(62.0 and 124.0 mg/kg BW)after a 90-day oral exposure.

关键词： Sodium dehydroacetate Sub-chronic toxicity 90-day repeated oral dose test Benchmark dose Point of departure

Mediating role of health literacy in the relationship between social isolation and psychological distress among pre-frail older adults

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World Journal of Psychiatry 2025年第1期15卷 137-144页

作者： Juan Fang li-hui li ming-Qian He yue ji Dong-Yan lu li-Bing Zhang jin-Lan Yao School of Medicine Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina

BACKGROUND Frailty has become a significant public health *** recent increase in the number of frail older adults has led to increased attention being paid to psycho-logical care services in *** social isolation of pre-frail older adults can impact their psychological *** To explore the mediating effect of health literacy between social isolation and psychological distress among communitydwelling older adults with *** This descriptive cross-sectional study was conducted with 254 pre-frail older individuals aged 60 years and *** isolation,health literacy,and psycholo-gical distress were comprehensively measured using the lubben Social Network Scale-6,12-item Short-Form Health literacy Questionnaire,and the Kessler Psy-chological Distress *** were evaluated using the SPSS 27.0 package program and the PROCESS macro *** statistical analyses,correlation analyses,and bootstrap mediation tests were used to assess associations between the *** The results showed that social isolation had an effect on health literacy among pre-frail older adults(β=0.240,Pliteracy was identified effect on psychological distress among pre-frail older persons(β=-0.307,Pliteracy partially mediated the relationship between social isolation and psychological distress among community-dwelling older adults with pre-frailty,with a mediation effect of-0.074,accounting for 17.83%of the total effect.

关键词： Frail Ageing Psychological distress Health literacy Social isolation

A General Electron Donor-Acceptor Photoactivation Using Oxime Esters Enabled Divergent Thioetherifications

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Chinese Journal of Chemistry 2024年第22期42卷 2751-2756页

作者： Maojian lu liang-liang jiang yue-ming xu Sanliang li Qing-Xiao Tong jian-ji Zhong College of Chemistry and Chemical Engineering and Key(Guangdong-Hong Kong Joint)Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceShantou UniversityShantouGuangdong 515063China Chemistry and Chemical Engineering Guangdong Laboratory ShantouGuangdong 515063China

Comprehensive Summary The EDA complex-mediated reactions involving oxime esters have been few ***,an EDA complex formed by thiophenolate anion and oxime ester is reported for photoinduced divergent synthesis of thioethers,depending on different types of oxime *** simplicity,mild reaction conditions,and flexible options of leaving group demonstrate the generality and synthetic utility of this *** an approach can also enable an interesting thiol-catalysis for the synthesis of phenanthridines.

关键词： Photochemistry EDA complex Thioetherification Oxime ester Thiol-catalysis Organosulfurs Radical reactions Cross-coupling Methodologyand reactions

Elevation and Land Use Types Have Significant Impacts on Spatial Variability of Soil Organic Matter Content in Hani Terraced Field of yuanyang County,China

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Rice science 2015年第1期22卷 27-34页

作者： li feng-bo lu Guang-de ZHOU Xi-yue NI hui-xiang xu Chun-chun yue Chao YANG Xiu-mei feng jin-fei FANG Fu-ping Rice Science & Technology Information Center China National Rice Research Institute Agro-Tech Extension Center of yuanyang

Soil organic matter （SOM） content is one of the most important indicators of the sustainability of soil. To maintain sustainable soil utilization and management in fragile Hani terraced field, it is meaningful to investigate the effects of topography and land use type on SOM content. Descriptive statistics and geostatistics were used to analyze the data and the kriging method was applied to map the spatial patterns of SOM content. The results showed that the mean SOM content was 32.76 g/kg, with a variation coefficient of 40%. The SOM content was affected by elevation and land use type. As the increase of elevation, the SOM content in Hani terraced field also increased obviously. The SOM content in tea garden, which is almost at high elevation, was the highest in all six land use types, and the SOM content decreased in a following sequence： tea garden 〉 paddy field 〉 corn field 〉 banana garden 〉 cassava field 〉 sugarcane field. In addition, at the same elevation, the paddy field had the highest SOM content compared with other land use types. All these results demonstrate that paddy field is the most efficient and suitable land use type for SOM conservation at high, middle or low elevations in the fragile Hani terraced field. In order to protect soil quality and maintain the sustainable agricultural development, it is necessary to maintain or even to enlarge the area of paddy field in yuanyang county, Yunnan Province, China.

关键词： Hani terraced field elevation land use type geostatistics soil organic matter content

Associations of Sarcopenia, Handgrip Strength and Calf Circumference with Cognitive Impairment among Chinese Older Adults

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Biomedical and Environmental Sciences 2021年第11期34卷 859-870页

作者： WU Bing LYU yue Bin CAO Zhao jin WEI yuan SHI Wan Ying GAO Xiang ZHOU jin hui KRAUS Virginia Byers ZHAO feng CHEN Xin lu feng ZHANG ming yuan liU Ying Chun TAN Qi yue SONG Shi xun QU Ying li ZHENG xu lin SHEN Chong MAO Chen SHI Xiao ming Center for Global Health School of Public HealthNanjing Medical UniversityNanjing 211166JiangsuChina China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing 100021China School of Public Health Jilin UniversityChangchun 130012JilinChina Department of Nutritional Sciences Pennsylvania State UniversityUniversity ParkPA19019USA Duke Molecular Physiology Institute and Department of Medicine Duke University School of MedicineDurhamNorth Carolina27701USA Beijing Municipal Health Commission Information Center Beijing 100034China Division of Epidemiology School of Public HealthSouthern Medical UniversityGuangzhou 510515GuangdongChina

Objective To evaluate the associations of sarcopenia,handgrip strength and calf circumference with cognitive impairment among Chinese older *** Totally 2,525 older adults were recruited from the Healthy Aging and Biomarkers Cohort *** impairment was assessed by the Chinese Mini-Mental State *** strength was calculated from the means of the right and left hand *** circumference was measured at the site of maximum circumference of the non-dominant *** formula developed by Ishii was used to define *** logistic regression was performed to evaluate the associations of sarcopenia,handgrip strength,and calf circumference with cognitive *** The prevalence of cognitive impairment was 34.36%.The adjusted odds ratio(OR)for cognitive impairment in individuals with sarcopenia was 2.55[95% confidence interval(95%CI):1.86-3.50].Compared with individuals in the first quartile(Q1)of calf circumference,the adjusted ORs in the second,third,and fourth quartiles(Q_(2),Q_(3),and Q_(4))were 0.75(95% CI:0.58-0.96),0.59(95% CI:0.44-0.79),and 0.62(95% CI:0.45-0.8),*** with individuals in Q1 of handgrip strength,the adjusted ORs for Q_(2),Q_(3),and Q_(4) were 0.49(95%CI:0.38-0.62),0.31(95% CI:0.23-0.41),and 0.30(95%CI:0.21-0.44),*** Sarcopenia,identified by low handgrip strength and low calf circumference,was positively associated with cognitive impairment.

关键词： Sarcopenia Cognitive impairment Handgrip strength Calf circumference Older adults

Structure, magnetic properties, and thermal stability of Sm(1-x)Tm_xCo_5compounds

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Rare Metals 2014年第2期33卷 176-179页

作者： jian-Hua Zuo ming yue Qing-Mei lu Dong-Tao Zhang xue-xu Gao jiu-Xing Zhang Zhao-hui Guo Wei li College of Materials Science and Engineering Beijing University of Technology State Key Laboratory of Advanced Metals and Materials University of Science and Technology Beijing Division of Functional Materials Central Iron and Steel Research Institute

Structure, magnetic properties, and thermal stability of ternary Sm1-xTmxCo5 compounds were studied via X-ray diffraction（XRD）, thermal magnetic analysis（TMA）, and magnetic measurements. XRD results show that all the compounds have a main phase of hexagonal CaCu5-type crystal structure with small amount of impurity phases; increasing Tm content is associated with contraction of the hexagonal unit cell in the direction of the c axis and expansion of the a and b parameters. TMA results indicate that the Curie temperature（TC） of Sm1-xTmxCo5 compounds gets higher with the increase in Tm *** measurements show that both the magnetic anisotropy field（HA） and the magnetization at an applied field of 7 T（M7 T） decrease with the increase of Tm content. However, the thermal stability of both the HAand M7 Tof all the Tm doped compounds is remarkably improved compared with that of the pure SmCo5 compound, leading to the result that both the M7 Tand HAof Sm0.8Tm0.2Co5 .2are higher than those of SmCo5 compound at 473 K, which indicates the good potential of Tm doped compound in the practical applications at elevated temperature.

关键词： Sm1-xTmxCo5 compounds Crystal structure Intrinsic magnetic property Thermal stability

Five new 2-(2-phenylethyl)chromone derivatives and three new sesquiterpenoids from the heartwood of Aquilaria sinensis, an aromatic medicine in China

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Natural Products and Bioprospecting 2022年第1期12卷 12-25页

作者： lu Zhang Ping Yi hui Yan Xiao-Nian li Meng-yuan Xia Jun Yang ji-feng luo yue-Qiu He yue-Hu Wang Key Laboratory of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant Resourcesand State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China Key Laboratory of Chemistry for Natural Products of Guizhou Province Chinese Academy of SciencesGuiyang 550014People’s Republic of China Faculty of Plant Protection Yunnan Agricultural UniversityKunming 650201People’s Republic of China

Five new 2-(2-phenylethyl)chromone derivatives,(5S,6R,7R,8S,7ʹR)-7ʹ-hydroxyagarotetrol(1),(5S,6R,7R,8S,7ʹS)-7ʹ-hydroxyagarotetrol(2),(6S,7S,8R)-2-[2-(4-methoxyphenyl)ethyl]-6,7,8-trihydroxy-5,6,7,8-tetrahydrochromone(3),(6S,7S,8R)-2-(2-phenylethyl)-6,7,8-trihydroxy-5,6,7,8-tetrahydrochromone(4),(5S,6R,7S,8R)-2-(2-phenylethyl)-5,6,7-trihydroxy-5,6,7,8-tetrahydro-8-[2-(2-phenylethyl)-7-methoxychromonyl-6-oxy]chromone(5),three new sesquiterpenoids,(4S,5S,7S,8S,10S,13R)-7,8,13-trihydroxyrotunda-1,11-dien-3-one(6),(4S,5S,7S,8S,10S,13S)-7,8,13-trihydroxyrotunda-1,11-dien-3-one(7),and(4R,5S,7S,8S,10S,13S)-7,8,13-trihydroxyrotunda-1,11-dien-3-one(8),along with 14 known compounds were isolated from the resinous heartwood of Aquilaria sinensis(Thymelaeaceae).The chemical structures of these new compounds were elucidated by 1D and 2D NMR and MS data,single-crystal X-ray diffraction analysis,and electronic circular dichroism(ECD)*** neuroprotective activities of these isolates were evaluated using an in vitro model of rat adrenal pheochromocytoma(PC12)cell injury induced by *** concentrations from 5 to 40μM,compounds 4 and 6,agarotetrol(9),and 6-hydroxy-2-(2-phenylethyl)chromone(17)showed significant protective activities against corticosterone-induced PC12 cell injury(P<0.001).

关键词： Thymelaeaceae Aquilaria sinensis Sesquiterpenoids 2-(2-Phenylethyl)chromones Neuroprotective

Timing and Spectral Analysis of the Black Hole X-Ray Binary MAXI J1803-298 with Insight-HXMT Data

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Research in Astronomy and Astrophysics 2024年第6期24卷 209-224页

作者： Ying-Chen xu jin-lu Qu MMéndez Rui-Can Ma Long ji liang Zhang yue Huang Qing-Cui Bu li-ming Song Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Kapteyn Astronomical Institute University of GroningenP.O.BOX 8009700 AV GroningenThe Netherlands Dongguan Neutron Science Center Dongguan 523808China School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China Institut für Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls UniversitätSand 1D-72076 TübingenGermany

We present a comprehensive analysis of the 2021 outburst of MAXI J1803–298 utilizing observations of the Insight-Hard X-ray Modulation Telescope(Insight-HXMT)spanning from the low hard state to the high soft *** the Insight-HXMT data set,compared to the previous work,we identify a more prolonged presence of typeC quasi-periodic oscillations(QPOs)with centroid frequencies ranging from~0.16 to 6.3 Hz,which present correlations with the hardness ratio and the photon index of the Comptonized *** QPO frequencies less than~2 Hz,the QPO phase lags are hard(photons of 10–19 keV arrive later than those of 1–4 keV),while at higher frequencies,the lags become soft at and above~4 ***,the spectra in all Insight-HXMT observations consist of a multi-color blackbody component and a Comptonized component,as commonly observed in classical black hole X-ray *** analyze state transitions and the evolution of accretion geometry in this *** fitted inner disk radius increases abnormally during the low hard state,hypothesized to result from the corona condensing onto the inner ***,two significant drops in flux are observed during the soft intermediate state,maybe implying changes in the corona/jet and the disk,respectively.

关键词： X-rays:binaries accretion accretion disks stars:black holes