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Blue light is more essential than red light for maintaining the activities of photosystem Ⅱ and Ⅰ and photosynthetic electron transport capacity in cucumber leaves

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Journal of Integrative Agriculture 2016年第1期15卷 87-100页

作者： MIAO Yan-xiu W ANG Xiao-zhuo G AO Li-hong c hen qing-yun QU Mei Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable crops College of Agriculture and Biotechnology China Agricultural UniversityBeijing 100193P.R.China

Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light. However, the regulation mechanism of related photosynthesis characteristics remains largely unclear. Here, four light qualities treatments （300 μmol m-2 s-1） including white fluorescent light （FL）, blue monochromatic light （B, 440 nm）, red monochromatic light （R, 660 nm）, and a combination of red and blue light （RB, R：B=8：1） were carried out to investigate their effects on the activity of photosystem II （PSII） and photosystem I （PSI）, and photosynthetic electron transport capacity in the leaves of cucumber （cucumis sativus L.） seedlings. The results showed that compared to the FL treatment, the R treatment significantly limited electron transport rate in PSII （ETR11） and in PSI （ETR1） by 79.4 and 66.3%, respectively, increased non-light induced non-photochemical quenching in PSII （q^No） and limitation of donor side in PSI （φND） and reduced most JIP-test parameters, suggesting that the R treatment induced suboptimal activity of photosystems and inhibited electron transport from PSII donor side up to PSI. However, these suppressions were effectively alleviated by blue light addition （RB）. compared with the R treatment, the RB treatment significantly increased ETR, and ETR1 by 176.9 and 127.0%, respectively, promoted photosystems activity and enhanced linear electron transport by elevating electron transport from QA to PSI. The B treatment plants exhibited normal photosystems activity and photosynthetic electron transport capacity similar to that of the FL treatment. It was concluded that blue light is more essential than red light for normal photosynthesis by mediating photosystems activity and photosynthetic electron transport capacity.

关键词： cucumber photosystem II photosystem I electron transport

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Metagenomic analysis reveals hidden links between gut microbes and habitat adaptation among cave and surface dwelling Sinocyclocheilus species

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Zoological Research 2023年第4期44卷 793-807页

作者： Hong-Yu chen chun-qing Li Shan-Yuan chen hen Xiao School of Ecology and Environmental Sciences Yunnan UniversityKunmingYunnan 650500China Institute of Medical Biology Chinese Academy of Medical Sciences and Peking Union Medical SchoolKunmingYunnan 650031China

Intestinal microbes are closely related to vital host functions such as digestion and nutrient absorption,which play important roles in enhancing host *** a natural“laboratory”,caves provide an outstanding model for understanding the significance of gut microbes and feeding habits in the habitat adaptability of ***,research on the relationship between gut microbes,feeding habits,and the adaptability of troglobites remains *** this study,we compared the characteristics of the intestinal microbes of Sinocyclocheilus cavefish and surface fish and further established the relationship between intestinal and habitat ***,we conducted environmental DNA(eDNA)(metabarcoding)analysis of environmental samples to clarify the composition of potential food resources in the habitats of the Sinocyclocheilus cavefish and surface *** showed that the structure of the Sinocyclocheilus gut microbes was more related to ecological type(habitat type)than phylogenetic *** horizontal transfer of habitat microbes was a source of gut microbes,hosts also showed strong selection for inherent microbes as dominant *** in the composition and structure of gut microbes,especially dominant microbes,may enhance the adaptability of the two Sinocyclocheilus fish types from the perspectives of food intake,nutrient utilization,and harmful substance metabolism,suggesting that food resources,predation patterns,intestinal flora,digestive and absorptive capacity,and feeding habits and preferences are linked to habitat *** results should facilitate our understanding of the significance of fish gut microbes to habitat adaptation and provide a new perspective for studying the adaptive mechanisms of cavefish.

关键词： cavefish Intestinal microbes Sinocyclocheilus Adaptive mechanism

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Report of Incidence and Mortality in china cancer Registries,2008

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chinese Journal of cancer Research 2012年第3期24卷 171-180页

作者： Wan-qing c hen Rong-shou Zheng Si-wei Zhang Ni Li Ping Zhao Guang-lin Li Liang-you Wu Jie He National cancer center Beijing 100021China Disease Prevention and control Bureau Ministry of HealthBeijing100044China

Objective： Annual cancer incidence and mortality in 2008 were provided by National central cancer Registry in china, which data were collected from population‐based cancer registries in 2011. Methods： There were 56 registries submitted their data in 2008. After checking and evaluating the data quality, total 41 registries＇ data were accepted and pooled for analysis. Incidence and mortality rates by area （urban or rural areas） were assessed, as well as the age‐ and sex‐specific rates, age‐standardized rates, proportions and cumulative rate. Results： The coverage population of the 41 registries was 66,138,784 with 52,158,495 in urban areas and 13,980,289 in rural areas. There were 197,833 new cancer cases and 122,136 deaths in cancer with mortality to incidence ratio of 0.62. The morphological verified rate was 69.33%, and 2.23% of cases were identified by death certificate only. The crude cancer incidence rate in all areas was 299.12/100,000 （330.16/100,000 in male and 267.56/100,000 in female） and the age‐standardized incidence rates by chinese standard population （ASIRc） and world standard population （ASIRW） were 148.75/100,000 and 194.99/100,000, respectively. The cumulative incidence rate （0-74 years old） was of 22.27%. The crude incidence rate in urban areas was higher than that in rural areas. However, after adjusted by age, the incidence rate in urban was lower than that in rural. The crude cancer mortality was 184.67/100,000 （228.14/100,000 in male and 140.48/100,000 in female）, and the age‐standardized mortality rates by chinese standard population （ASMRc） and by world population were 84.36/100,000 and 114.32/100,000, respectively. The cumulative mortality rate （0-74 years old） was of 12.89%. Age‐adjusted mortality rates in urban areas were lower than that in rural areas. The most common cancer sites were lung, stomach, colon‐rectum, liver, esophagus, pancreas, brain, lymphoma, breast and cervix which accounted for 75% of all cancer incidence. Lung cancer wa

关键词： cancer registry Incidence Mortality Epidemiology, china

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Dengue outbreaks in Taiwan, 1998-2017: Importation, serotype and temporal pattern

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Asian Pacific Journal of Tropical Medicine 2018年第8期11卷 460-466页

作者： Ying-hen Hsieh Department of Public Health China Medical University

Objective: To ascertain the role of imported cases and serotypes on dengue outbreaks in Taiwan which have been sporadic yet highly volatile during the past two decades, exhibiting record-breaking magnitude in recent years. Methods: confirmed case and serotype data from Taiwan centers for Disease control during 1998-2017 were fully examined, with fitting of weekly and daily case data of each city/county to a mathematical model to pinpoint the waves of cases and their locations. Moreover, we quantify the timing of turning point and transmission potential of each wave and determine its circulating serotype, to ascertain any pattern or connection between the variations in circulating serotypes and the magnitude/transmissibility of outbreak. Results: While the number of imported case increased steadily during past two decades, the yearly number of indigenous cases fluctuated wildly. Moreover, while yearly percentages of serotypes for imported cases remains steady, that of indigenous cases does not exhibit any clear pattern. There was at least one wave of reported cases somewhere in Taiwan every year from 1998 to 2015, except in 2016-2017. The effective reproduction number R for all waves in all locations ranged from 1.14 to 2.87, with the exception of two Tainan waves, in 2010(3.95) and 2015(6.84). Four major outbreaks of over 2000 cases reveal circulation of one dominant serotype. conclusions: correlation between imported cases and indigenous outbreak prove to be difficult to ascertain, even with the availability of serotype data. However, although there had been occasional co-circulation of serotypes in one location, and for some years with different serotypes circulating in different locations, all major outbreaks of over 2 000 cases during the past two decades are due to circulation of mainly a single serotype, perhaps indicating greater transmission potential with one dominating serotype.

关键词： DENV Serotype Taiwan Imported cases Mathematical model Reproduction number

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On a nonlinear elliptic problem with critical potential in R^2

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Science china Mathematics 2004年第5期47卷 741-755页

作者： Shen Yaotian YAO Yangxin hen Zhihui Department of Applied Mathematics South China University of Technology Guangzhou 510640 China Department of Applied Mathematics South China University of Technology Guangzhou 510640 China Department of Applied Mathematics South China University of Technology Guangzhou 510640 China

consider the existence of nontrivial solutions of homogeneous Dirichlet problem for a nonlinear elliptic equation with the critical potential in R2. By establishing a weighted inequality with the best constant, determine the critical potential in R2, and study the eigenvalues of Laplace equation with the critical potential. By the Pohozaev identity of a solution with a singular point and the cauchy-Kovalevskaya theorem, obtain the nonexistence result of solutions with singular points to the nonlinear elliptic equation. Moreover, for the same problem, the existence results of multiple solutions are proved by the mountain pass theorem.

关键词： elliptic equation, Hardy inequality, critical potential, mountain pass theorem.

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One-pot Synthesis of Hierarchical Flower-like WS_(2) Microspheres as Anode Materials for Lithium-ion Batteries

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 1-6页

作者：张向华 TAN hen WANG Ze XUE Maoquan School of Mechanical Engineering Jiangsu University of TechnologyChangzhou 213001China School of Materials Engineering Jiangsu University of TechnologyChangzhou 213001China changzhou Vocational Institute of Industry Technology Changzhou 213164China

3D hierarchical flowerlike WS_(2) microspheres were synthesized through a facile one-pot hydrothermal *** as-synthesized samples were characterized by powder X-ray powder diffraction (XRD),energy-dispersive spectroscopy (EDS),scanning electron microscopy (SEM) and *** images of the samples reveal that the hierarchical flowerlike WS_(2) microspheres with diameters of about 3-5μm are composed of a number of curled *** tests such as charge/discharge,cyclic voltammetry,cycle life and rate performance were carried out on the WS_(2) *** an anode material for lithium-ion batteries,hierarchical flowerlike WS_(2) microspheres show excellent electrochemical *** a current density of100 mA·g^(-1),a high specific capacity of 647.8 mA·h·g^(-1) was achieved after 120 discharge/charge *** excellent electrochemical performance of WS_(2) as an anode material for lithium-ion batteries can be attributed to its special 3D hierarchical structure.

关键词： WS_(2) microspheres lithium-ion batteries electrochemical performance

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Energy and Target Dependence of Azimuthal Distributions at Mid-Rapidity in Mediate-Energy Nuclear Reactions

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chinese Physics Letters 1993年第11期10卷 660-663页

作者： MA Yugang hen Wenqing FENG Jun ccAST(World Laboratory)P.O.Box 8730 Beijing 100080 Institute of Nuclear Research Academia SinicaShanghai 201800

The azimuthal distributions at mid-rapidity for ^(40)Ar-induced reactions are investigated by nuclear transport *** rotation-like behavior which is one of collective motions becomes stronger with the increasing of the imp&ct parameter and weaker with the increasing of the projectile *** about 85 MeV/nucleon the rot&tion-like behvior aim os t vanishes for ^(40)Ar+^(27)Al *** the rotation-like behavior becomes weaker and the out-of-plane enhancement of particle emisBion is revealed with the increasing of target *** quantitative agreements with the experiment data are also obtained.

关键词： theory. energy. rotation

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Genetic Diversity of crop Wild Relatives under Threat in Yangtze River Basin:call for Enhanced In Situ conservation and Utilization

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Molecular Plant 2019年第12期12卷 1535-1538页

作者： Qin L i Yao Zhao Xiaoguo Xiang Jiakuan c hen Jun Rong Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Institute of Biodiversity ScienceFudan UniversityShanghai 200438China Jiangxi Province Key Laboratory of Watershed Ecosystem change and Biodiversity Center for Watershed EcologyInstitute of Life Science and School of Life SciencesNanchang UniversityNanchang 330031China

The changing climate threatens agricultural production and food security(Vincent et al.,2019).The limited genetic diversity of crops restricts the improvement potential,which acts as an inevitable barrier for breeding... 详细信息

关键词： breeding crops cultivated

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Temporal patterns of dengue epidemics:The case of recent outbreaks in Kaohsiung

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Asian Pacific Journal of Tropical Medicine 2017年第3期10卷 275-279页

作者： Mattia Sanna Ying-hen Hsieh Department of Public Health china Medical University Taichung Taiwan 40402 center for Infectious Disease Education and Research China Medical UniversityTaichung Taiwan 40402

Objective:To investigate whether major dengue outbreaks in the last two decades in Kaohsiung follow a precise temporal ***:Government daily lab-confirmed dengue case data from three major dengue outbreaks occurring during the last two decades in Kaohsiung in2002,2014 and 2015,is utilized to compute the corresponding weekly cumulative percentage of total case *** divide each of the three time series data into two periods to examine the corresponding weekly cumulative percentages of case numbers for each ***’s correlation coefficient was calculated to compare quantitatively the similarity between the temporal patterns of these three ***:Three cutoff points produce the most interesting comparisons and the most different ***’s correlation coefficient indicates quantitative discrepancies in the similarity between temporal patterns of the three years when using different cutoff ***:Temporal patterns in 2002 and 2014 are comparatively more similar in early *** 2015 outbreak started late in the year,but ended more like the outbreak in 2014,both with record-breaking number of *** retrospective analysis shows that the temporal dynamics of dengue outbreaks in Kaohsiung can strongly vary from one year to another,making it difficult to identify any common predictor.

关键词： Dengue Kaohsiung Temporal pattern cumulative percentage Pearson's correlation coefficient

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Housing Markets in china and Policy Implications:comovement or Ripple Effect

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china & World Economy 2014年第6期22卷 103-120页

作者： Shu-hen chiang Department of Finance Chung-Yuan Christian University

The overheated housing market has recently become a top priority of the chinese authorities and whether the ripple effect exists is key to understanding this housing issue. The present paper uses a cointegration estimation technique for six first-tier chinese cities during the 2003-2013 period to show that the comovements among housing prices in china are fully reflected in a long-run equilibrium. Using the Toda- Yamamoto causality test, the ripple effect is found to be characterized by a lead -lag relationship. More importantly, it is found that Beo＇ing is the main source of housing price appreciation in china, and should be targeted as the regulatory object to efficiently resolve the troubles in this increasingly high housing-price era.

关键词： causality test housing prices long-run equilibrium ripple effect

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