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Variant Scaling Relationship for Mass-Density Across Tree-Dominated Communities

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Journal of Integrative Plant Biology 2006年第3期48卷 268-277页

作者： hai-Tao Li Xing-guo Han jian-guo Wu Institute of Geographic Sciences and Natural Resources Research the Chinese Academy of Sciences Beijing 100101 China Laboratory of Quantitative Vegetation Ecology Institute of Botany the Chinese Academy of Sciences Beijing 100093 China Faculty of Ecology Evolution and Environmental Science School of Life Sciences Arizona State University Tempe AZ 85287-4501 USA

The past few decades have seen a resurgence of Interest in biological allometry. Specifically, a number of recent studies has suggested a -4/3 Invariant scaling relationship between mass and density that Is universally valid for tree-dominated communities, regardless of their phyietic affiliation or habitat. In the present study, we test this scaling relationship using a comprehensive forest biomass database, Including 1 266 plots of six blomes and 17 forest types across China. The present study shows that the scaling exponent of the massdensity relationship varies across different tree-dominated communities and habitats. This great variability In the scaling exponent makes any generalization unwarranted. Although Inappropriate regression methods can lead to flawed estimation of the scaling exponent, inconsistency of theoretical framework and empirical patterns may have undermined the validity of previous work.

关键词： allometry mass-density scaling relationship trees.

Lack of Evidence for 3/4 Scaling of Metabolism in Terrestrial Plants

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Journal of Integrative Plant Biology 2005年第10期47卷 1173-1183页

作者： hai-Tao LI Xing-guo HAN jian-guo WU Institute of Geographic Sciences and Natural Resources Research the Chinese Academy of Sciences Beijing 100101 China Laboratory of Quantitative Vegetation Ecology Institute of Botany the Chinese Academy of Sciences Beijing 100093 China Faculty of Ecology Evolution and Environmental Science School of Life Sciences Arizona State University Tempe AZ 85287-4501 USA

Scaling, as the translation of information across spatial, temporal, and organizational scales, is essential to predictions and understanding in all sciences and has become a central issue in ecology. A large body of theoretical and empirical evidence concerning allometric scaling in terrestrial individual plants and plant communities has been constructed around the fractal volume-filling theory of West, Brown, and Enquist （the WBE model）. One of the most thought-provoking findings has been that the metabolic rates of plants, like those of animals, scale with their size as a 3/4 power law. The earliest, single most-important study cited in support of the application of the WBE model to terrestrial plants claims that whole-plant resource use in terrestrial plants scales as the 3/4 power of total mass, as predicted by the WBE model. However, in the present study we show that empirical data actually do not support such a claim. More recent studies cited as evidence for 3/4 scaling also suffer from several statistical and data-related problems. Using a forest biomass dataset including 1 266 plots of 17 main forest types across China, we explored the scaling exponents between tree productivity and tree mass and found no universal value across forest stands. We conclude that there is not sufficient evidence to support the existence of a single constant scaling exponent for the metabolism-biomass relationship for terrestrial plants.

关键词： metabolism 3/4 power scaling terrestrial plants water use.

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响应面实验优化红肉蜜柚果酒发酵工艺

食品工业科技 2017年第3期38卷 238-243页

作者：吴均谢青松熊虎杨德莹李抒桐严海元向建国重庆市永川食品药品检验所重庆402160

为优化红肉蜜柚果酒发酵工艺,以红肉蜜柚果汁为原料,在对发酵温度、二氧化硫添加量、果酒干酵母添加量、发酵时间、初始糖度和初始p H单因素实验基础上,应用Box-behnken中心组合实验设计,并进行响应面分析优化红肉蜜柚果酒发酵工艺。结... 详细信息

为优化红肉蜜柚果酒发酵工艺,以红肉蜜柚果汁为原料,在对发酵温度、二氧化硫添加量、果酒干酵母添加量、发酵时间、初始糖度和初始p H单因素实验基础上,应用Box-behnken中心组合实验设计,并进行响应面分析优化红肉蜜柚果酒发酵工艺。结果表明,红肉蜜柚果酒发酵最佳工艺条件为:发酵温度28℃、二氧化硫添加量61 mg/L、果酒干酵母添加量61 mg/100 m L、发酵时间15 d,在此优化条件下,红肉蜜柚果酒的酒精体积分数为13%,与响应面预测值13.25%拟合性较好,其残留总糖为1 g/L左右、酒呈淡橙红色,澄清透明,气味芳香,酒香浓郁,带有明亮的柚子风味,口感柔和,对实际生产有一定指导意义。

关键词：红肉蜜柚果酒发酵工艺优化响应面法分析

Engineering Foot-and-Mouth disease viruses with increased growth properties and antigenic match for the development of improved vaccine

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Engineering Foot-and-Mouth disease viruses with increased gr...

Preparation of carbon fiber cloth supported porous CdS nanorods with excellent photocatalytic activity for Cr(Ⅵ)reduction

中国畜牧兽医学会畜牧兽医生物技术学分会暨中国免疫学会兽医免疫分会第八次学术研讨会

作者： ZHENG hai-xue~*,guo jian-hong,JIN Ye,YANG Fan,HE Ji-jun,ZHANG Ke-san, LIU Xiang-tao~*,CAI Xue-peng (State Key Laboratory of Veterinary Etiological Biology,Key Laboratory of Animal Virology of Ministry of Agricultural, Lanzhou Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Lanzhou 730046,China)

A licensed vaccine is currently not available against serotype A foot-and-mouth disease(FMD) in China since A/WH/CHA/09 was isolated in 2009,partly because it does not replicate well in BHK *** this end,a novel plasmid-based reverse genetics system was employed to construct a chimeric strain by replacing the nearly complete P1 gene in the vaccine strain O/CHA/99 with that in the epidemic stain A/WH/CHA/*** chimeric vius displayed similar growth kinetics with its parental strains and was chosen as the vaccine candidate strain after 12 passages in BHK cells. Subsequently,immunization with the inactivated vaccine was conducted in cattle and humoral immune responses in most of vaccinated cattle were induced at day *** result of virus challenge by A/WH/CHA/09 at day 28 indicates that the group vaccinated by a 10μg dose was fully protected without sub-clinic *** together,our data demonstrate the chimeric vius with O/CHA/99 not only breaks through the bottleneck of propagation in BHK cells compared with A/WH/CHA/09,provides excellent antigenic matching against serotype A FMD,but also is also a potential marker vaccine to distinguish infection and vaccination,which suggests reverse genetics technology is a potential tool to engineer a vaccine candidate for FMD prevention and control.

关键词： Foot-and-mouth disease Vaccine Protection Reverse genetics

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中南民族大学学报（自然科学版） 2025年第1期44卷 9-21页

作者： LI Hengchao WANG Wenguang WU Liangpeng jian Siyuan LONG Shimin guo Yuxi Guangdong University of Technology School of Materials and EnergyGuangzhou 510006China Guangdong University of Technology School of Chemical Engineering and Light IndustryGuangzhou 510006China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000Guangdong China

The use of visible-light responsive photocatalysts for removing heavy metal ions in wastewater has received great ***,the development of photocatalysts with high activity and recyclability remains a huge ***,a recyclable carbon fiber cloth-supported porous CdS nanorod photocatalyst was fabricated by a two-step hydrothermal treatment using AgVO_(3) nanowires as *** results indicated that under visible-light illumination,the carbon cloth-supported porous CdS nanorods showed improved photocatalytic activity for the reduction of Cr(Ⅵ),with an apparent rate constant exceeding that of carbon cloth-supported CdS nanospheres by a factor of 1.65 ***,the carbon cloth-supported porous CdS nanorods can be easily separated and be *** brings a new perspective for developing photocatalysts with high efficiency and recyclability for wastewater treatment.

关键词： carbon cloth cadmium sulfide silver metavanadate porous nanorods heavy metal ions reduction

Characterization of hot deformation behavior of 30Si2MnCrMoVE low-alloying ultra-high-strength steel by constitutive equations and processing maps

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Journal of Iron and Steel Research International 2020年第7期27卷 807-819页

作者： hai Wang Dong Liu jian-guo Wang hai-ping Wang Yang Hu Hao-dong Rao School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an710072ShaanxiChina State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072ShaanxiChina

Isothermal compression tests of as-forged 30Si2MnCrMoVE low-alloying ultra-high-strength steel were carried out on a Gleeble 3500 thermal simulator at the deformation temperatures of 950-1150℃and strain rates of 0.01-10 s^−*** on the classical stress-dislocation density relationship and the kinematics of the dynamic recrystallization,the constitutive equations of the work hardening dynamical recovery period and dynamical recrystallization period were developed by using the work hardening curve and Avrami equation,which shows good agreement with the experimental *** maps at the strain of 0.90 were constructed based on dynamic material model and were analyzed combined with microstructure observation under different *** optimum parameter based on the processing maps was obtained and verified by a supplementary *** power dissipation maps and instability maps at strains of 0.05-0.90 were also constructed,and the evolution law was analyzed in *** established constitutive equation and hot processing maps can provide some guidance for hot working process.

关键词： 30Si2MnCrMoVE ultra-high-strength steel Hot deformation Constitutive model Processing map Power dissipation efficiency

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一种基于有序二叉树的高效优化索引树

微机发展 2004年第4期14卷 18-21,24页

作者：吴海辉吴建国安徽大学计算机系安徽合肥230039

在编制汉字输入法的过程中遇到了字符串的存储和检索问题,对此提出了一种基于有序二叉树的高效优化索引树,给出了优化索引树的生成算法和搜索算法。在该高效优化索引树中,采用特定的非定长结构存储树节点,并把索引树存放在一个字节型逻... 详细信息

在编制汉字输入法的过程中遇到了字符串的存储和检索问题,对此提出了一种基于有序二叉树的高效优化索引树,给出了优化索引树的生成算法和搜索算法。在该高效优化索引树中,采用特定的非定长结构存储树节点,并把索引树存放在一个字节型逻辑数组中,从而大大减少了索引树中儿子指针和兄弟指针的个数,使得索引树中不存在空指针。优化后的索引树不仅占用存储空间少,而且检索速度极快,非常适合存储编码信息。

关键词：数据结构有序二叉树高效优化索引树汉字输入法存储结构

Experimental investigation on enhanced damage to fuel tanks by reactive projectiles impact

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Defence Technology（防务技术） 2021年第2期17卷 599-608页

作者： hai-fu Wang jian-wen Xie Chao Ge Huan-guo guo Yuan-feng Zheng State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

Enhanced damage to the full-filled fuel tank,impacted by the cold pressed and sintered PTFE/Al/W reactive material projectile(RMP)with a density of 7.8 g/cm3,is investigated experimentally and *** fuel tank is a rectangular structure,welded by six pieces of 2024 aluminum plate with a thickness of 6 mm,and filled with RP-3 aviation *** results show that the kerosene is ignited by the RMP impact at a velocity above 1062 m/s,and a novel interior ignition phenomenon which is closely related to the rupture effect of the fuel tank is ***,the traditional steel projectile with the same mass and dimension requires a velocity up to 1649 m/s to ignite the *** on the experimental results,the radial pressure field is considered to be the main reason for the shear failure of *** mechanism considerations,the chemical energy released by the RMP enhances the hydrodynamic ram(HRAM)effect and provides additional ignition sources inside the fuel tank,thereby enhancing both rupture and ignition ***,to further understand the enhanced ignition effect of RMP,the reactive debris temperature inside the kerosene is analyzed *** initiated reactive debris with high temperature provides effective interior ignition sources to ignite the kerosene,resulting in the enhanced ignition of the kerosene.

关键词： Reactive material projectile Fuel tank Enhanced damage effect Enhanced ignition mechanism Impact behavior

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镧对太湖地区水稻土若干水解酶活性的影响

稀土 2002年第3期23卷 41-43页

作者：褚海燕朱建国谢祖彬曹志洪曾青林先贵中国科学院南京土壤研究所土壤圈物质循环开放研究实验室江苏南京210008

通过模拟试验研究了镧对太湖地区水稻土酸性磷酸酶、脲酶及蔗糖酶活性的影响。镧对水稻土酸性磷酸酶活性表现出抑制作用 ,当镧浓度大于 6 0 mg/kg时 ,抑制作用达到显著水平 ,最大抑制率达到 13%;镧对水稻土脲酶活性影响不显著 ;镧对水... 详细信息

通过模拟试验研究了镧对太湖地区水稻土酸性磷酸酶、脲酶及蔗糖酶活性的影响。镧对水稻土酸性磷酸酶活性表现出抑制作用 ,当镧浓度大于 6 0 mg/kg时 ,抑制作用达到显著水平 ,最大抑制率达到 13%;镧对水稻土脲酶活性影响不显著 ;镧对水稻土蔗糖酶活性表现出一定的刺激作用 ,当镧浓度为 30 0 mg/kg时 ,刺激作用达到显著水平 ,最大刺激率为 10 %。

关键词：太湖地区酶活性稀土镧水稻土水解酶微量元素肥料