|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Study on the physiological indices of Pinus sibirica and Pinus koraiensis seedlings under cold stress显示文摘Although Pinus sibirica and Pinus koraiensis are resistant to cold or low temperatures in the cold temperate regions of the northern hemisphere,the former has a stronger cold resistance.Research has been limited to the comparison of physiological responses of the two species to cold stress.In this study,5-year-old seedlings of P.sibirica and P.koraiensis were subjected to six temperature treatments,[20℃(control),0℃,-20℃,-40℃,-60℃,and-80℃],under different stress periods(6,12,24,and 48 h).The results showed that differences in each physiological index were significant between P.sibirica and P.koraiensis,except for the permeability of cell membranes,reactive oxygen species,proline and soluble proteins.An ANOVA test indicated that there were extreme differences among the temperatures for each index,stress time and temperature 9 time for most indices.All indices showed a similar trend for P.sibirica and P.koraiensis with decreasing temperature or the extension of stress time.Soluble sugars and proline increased at 0 to-20℃and then remained unchanged with temperature decline.Other indices showed an increase from 20 to-20℃,stable from-20 to-40℃and a decrease from-40 to-80℃.All the indices increased and then declined along with the prolonged cold stress time,except for the control.From 0 to-40℃,the permeability of cell membranes,relative conductivity,reactive oxygen species and malonaldehyde of P.koraiensis seedlings were higher than in P.sibirica,but superoxide dismutase,peroxidase,catalase activity and soluble sugars,proline,and soluble proteins content emerged as opposite.This study compared the physiological mechanism responses to cold stress between P.sibirica and P.koraiensis to provide the basis for the introduction,distribution,and genetic improvement of these coniferous species. | Fang Wang Deyang Liang Xiaona Pei Qinhui Zhang Peng Zhang Jianqiu Zhang Zhimin Lu Yuchun Yang Guifeng Liu Xiyang Zhao | 2019 | Journal of Forestry Research2019，30，4： | 12 |
| 2 | Preparation and adsorption behavior of berberine hydrochloride imprinted polymers by using silica gel as sacrificed support material显示文摘 | Hui Li Yuzhuo Li Zhiping Li Xiyang Peng Yanan Li Gui Li Xianzhou Tan Gongxi Chen | 2011 | Applied Surface Science2011，，10： | 2 |
| 3 | Identification of zebrafish magnetoreceptor and cryptochrome homologs显示文摘Magnetoreception is essential for magnetic orientation in animal migration. The molecular basis for magnetoreception has recently been elucidated in fruitfly as complexes between the magnetic receptor magnetoreceptor(Mag R) and its ligand cryptochrome(Cry). Mag R and Cry are present in the animal kingdom. However, it is unknown whether they perform a conserved role in diverse animals. Here we report the identification and expression of zebrafish Mag R and Cry homologs towards understanding their roles in lower vertebrates. A single magr gene and 7 cry genes are present in the zebrafish genome. Zebrafish has four cry1 genes(cry1aa, cry1 ab, cry1 ba and cry1bb) homologous to human CRY1 and a single ortholog of human CRY2 as well as 2 cry-like genes(cry4 and cry5). By RT-PCR, magr exhibited a high level of ubiquitous RNA expression in embryos and adult organs, whereas cry genes displayed differential embryonic and adult expression. Importantly, magr depletion did not produce apparent abnormalities in organogenesis. Taken together, magr and cry2 exist as a single copy gene, whereas cry1 exists as multiple gene duplicates in zebrafish. Our result suggests that magr may play a dispensable role in organogenesis and predicts a possibility to generate magr mutants for analyzing its role in zebrafish. | Zuoqiong Zhou Xiyang Peng Jianbin Chen Xiushan Wu Yuequn Wang Yunhan Hong | 2016 | Science China(Life Sciences)2016，59，12： | 1 |
| 4 | Study on prebiotic effectiveness of neutral garlic fructan in vitro显示文摘Garlic is traditionally believed to have many health benefits including prevention of gastrointestinal diseases.One of the major components,garlic fructan(GF),was evaluated for its prebiotic effectiveness on human intestinal microflora.Garlic fructans A(DP 16)and B(DP 21)were prepared by ethanol fractionation precipitation.Then,they were added to an in vitro fermentation system as the sole carbon source inoculated with human fecal suspension.The total anaerobic bacteria,Bacteroides and Bifidobacteria,were enumerated by plate counting on selective media.Terminal restriction fragment length polymerization(tRFLP)was used to analyze DNA extracted from the in vitro cultures.The results indicated that the log CFUs of both Bacteroides(GF A 6.96,GF B 7.15)and Bifidobacteria(GF A 7.74,GF B 7.74)grown in the GF cultures at 24 h were significantly higher than those at 0 h(Bacteroides 4.93,Bifidobacteria 4.78)(P<0.05).Terminal restriction fragments(TRFs)256–258 bp(ascribed to Bifidobacterium)in the profiles were also observed higher in the TRFLP profiles from the garlic fructans’cultures.In this study,GFs were found to selectively stimulate the growth of beneficial Bifidobacteria from human fecal microflora.The prebiotic effectiveness of GFs supports the use of garlic as a way to prevent some gastrointestinal diseases.©2013 Beijing Academy of Food Sciences.Production and hosting by Elsevier B.V.All rights reserved. | Ning Zhang Xuesong Huang Yanhua Zeng Xiyang Wu Xichun Peng | 2013 | Food Science and Human Wellness2013，2，3： | 1 |
| 5 | Equilibrium electron beam parameters of the High Energy Photon Source显示文摘Purpose The physics design of the High Energy Photon Source(HEPS)was finished after many times of iteration.Hereby,the typical equilibrium electron beam parameters corresponding to the proposed two baseline operation modes in the baseline design of HEPS are presented.Methods To compute the equilibrium parameters of the electron beam,the lattice parameters,RF parameters,and the parameters of the insertion devices(IDs)were determined first.Furthermore,it is more precise to use the full-current electron beam parameters in the estimations of the performance of the synchrotron light.Therefore,not only the single-particle dynamics but also the current-dependent collective effects need to be considered in the computations of the full-current,equilibrium parameters of the electron beam.Both analytic computations and multi-particle tracking simulations were carried out.Results The full-current,equilibrium parameters of the electron beams in the HEPS storage ring are presented in this paper.Moreover,the main beam parameters in the injector(the booster and the LINAC),corresponding to the two baseline operation modes of the storage ring,are also presented.Conclusion The typical electron beam parameters corresponding to the two baseline operation modes are given in detail in this paper. | Haisheng Xu Cai Meng Yuemei Peng Saike Tian Na Wang Xiaohao Cui Chongchong Du Zhe Duan Yuanyuan Guo Ping He Xiyang Huang Daheng Ji Hongfei Ji Yi Jiao Jingyi Li Nan Li Xiaoyu Li Xiaohan Lu Pengfei Liang Weimin Pan Huamin Qu Bin Wang Jiuqing Wang Yuanyuan Wei Jinyu Wan Gang Xu Fang Yan Chenghui Yu Sen Yue Xiang Zhang Yaliang Zhao | 2023 | Radiation Detection Technology and Methods2023，7，2： | 0 |
| 6 | Variation and stability analysis of growth traits of poplar clones in the seedling stage in northeast China显示文摘Plant phenotypes are infl uenced by genetic and environmental factors.In this study,the growth traits of 43 one-year-old poplar clones grown at diff erent sites in northeast China(Dongling State-owned Forest Protection Center,DL;Baicheng State-owned forest farm,BC;and Cuohai Forest farm,CH)were evaluated and analyzed across clones and sites.Results show signifi cant diff erences in height and base diameter among sites and clones.Phenotypic and genetic variation coeffi cients ranged from 49.59%(BC)to 58.39%(DL)and from 49.33%(BC)to 58.06%(DL),respectively.Additive main eff ects and multiplicative interaction(AMMI)analysis showed that the eff ects of genotype,environment,and genotype×environment interaction were signifi cantly diff erent.Genetic variation was the main source of variation,accounting for 48.6%.AMMI biplot showed that clone 30 had high and stable yields at the three sites.From an evaluation of multiple traits and GGE biplot that clone 2,clone 30 and clone 25 had higher yield than the other clones at DL,CH and BC,respectively.These clones will provide material for forest regeneration in northeast China. | Xiaoting Liu Qiushuang Zhao Peng Yin Hanxi Li Xuesong Li Liguo Wu Yueji Li Yanbo Hu Xiyang Zhao | 2023 | Journal of Forestry Research2023，34，4： | 0 |
| 7 | High Dielectric Constant and Low-loss Dielectric Ceramics of Sr_5 LnTi_3Ta_7O_(30)(Ln=La,Nd,Sm and Y)显示文摘Polycrystalline Sr_5LnTi_3Ta_7O_(30)(Ln=La,Nd,Sm and Y)ceramics were prepared as single- phase materials through conventional solid-state ceramics method.The structure was characterized by X-ray diffraction method and scanning electron microscopy(SEM).The dielectric properties were measured from room temperature to 400℃.All compounds are paraelectric phases adopting the filled tetragonal tungsten bronze(TB)structure at room temperature.At 1 MHz their dielectric constant(ε_r)varied from 109 to 139, dielectric loss changed from 0.003 3 to 0.005 8,and the temperature coefficients of the dielectric constant(τ_ε) moved from-710 to-880×10.6^(-6)℃^(-1). | TU Wenmao CHEN Pu PENG Xiyang LIU Ting | 2008 | Journal of Wuhan University of Technology(Materials Science)2008，23，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员