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Effects of Logging on the Genetic Diversity of Quercus tiaoloshanica Chun et Ko in a Tropical Montane Forest of Hainan Island, Southern China

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Journal of Integrative Plant Biology 2005年第10期47卷 1184-1192页

作者： Jian-Wei ZHENG Shu-Qing AN Lin CHEN Xin LENG zhong-sheng WANG hua-Jun XIANG Laboratory of Forest Ecology and Global Changes School of Life Science Nanjing University Nanjing 210093 China

Quercus tiaoloshanica Chun et Ko, which has a narrow range of distribution, is one of the important endemic species of the tropical montane rain forest on Hainan Island, southern China. Long-term logging and habitat destruction have resulted in population decline and distribution retreat of Q. tiaoloshanica. To determine the impact of logging on the genetic diversity of Q. tiaoloshanica, the authors investigated the genetic structures using amplified fragment length polymorphism markers in four regenerated stands after logging and in one unlogged stand. Compared with the unlogged stand, the effective number of alleles per locus dropped by 1.0% in selective logging stands and by 2.0% in clear logging stands, corresponding to reductions of 3.8% and 5.2%, respectively, in mean Nei＇s gene diversity and 2.9% and 3.5%, respectively, in mean Shannon diversity index. No substantial genetic erosion was detected in any of the regenerated stands owing to the high tree density and high heterogeneity of the Q. tiaoloshanica stands investigated. Meanwhile, there was no natural regeneration of the species observed in a Dacrydium pierrei Hickel plantation 700 m away from the regenerated stands, suggesting the limited ability of seed dispersal of Q. tiaoloshanica. Clear logging should be undertaken cautiously because the total number of plant species dropped by 15.2% in the clear-logged stands compared with the unlogged stand. To conserve the genetic diversity of this species, as well as the plant biodiversity of tropical forests, the habitats of Q. tiaoloshanica should be protected against exploitation in terms of agricultural or other forms of land use, and some mature trees should be preserved as seed sources to maintain an adequate regeneration base for this species in the management of logging.

关键词： amplified fragment length polymorphism genetic erosion logging Quercus tiaoloshanica tropical forest.

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Template-free preparation of porous Co microfibers from spent lithium-ion batteries as a promising microwave absorber

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Rare Metals 2022年第10期41卷 3475-3485页

作者： Xiao-Min Wu Fei Xie Yong-Lin Yao Yue Sun zhong-sheng hua Zhuo Zhao Yong-Xiang Yang Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling School of Metallurgical EngineeringAnhui University of TechnologyMaanshan243002China Department of Materials Science and Engineering Delft University of TechnologyDelft2628CDNetherlands

In order to take full advantage of the secondary resources,in this paper,we reported a template-free process to prepare porous Co microfibers from spent lithiumion batteries(LIBs).First,the waste LiCoO_(2) powders were leached by oxalic acid at a suitable temperature,and rodlike cobalt oxalate powders were ***,the porous Co microfibers were prepared by using the cobalt oxalate as precursors through a thermal decomposition at420 ℃ under nitrogen *** prepared Co microfibers possess diameters of 1-2 μm,and each microfiber consists of small particles with size of100-200 *** Co microfibers(25 wt%)/paraffin composite exhibited excellent microwave absorption *** the sample thickness is 4.5 mm,the reflection losses reach-36.14 and-38.20 dB at 4.16 and 17.60 GHz,respectively,and the effective bandwidth reaches up to 5.52 *** indicates that the Co microfibers can be used as a promising microwave ***,this paper demonstrates a novel process to make a high value-added product through recycling from the spent lithium-ion *** addition,it is advantageous to eliminate the hazard of spent lithium-ion batteries and electromagnetic radiation to environment and human health.

关键词： Spent lithium-ion batteries(LIBs) Co microfibers Recycling Oxalic acid leaching Microwave absorption

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Phenotype of Rice Floury Endosperm Mutant flo7 and Fine Mapping of Mutated Gene

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Rice science 2015年第4期22卷 162-170页

作者： sheng zhong-hua FANG Peng-fei LI San-feng JIAO Gui-ai XIE Li-hong HU Pei-song TANG Shao-qing WEI Xiang-jin State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Genetic Breeding of Ministry of Agriculture China National Rice Research Institute

The major storage substance in rice endosperm is starch, which accounts for 80% of dry matter weight. In this study, rice mutant flo7, selected from the progeny of Nipponbare＇s tissue culture, displayed floury and opaque endosperm. Compared with its corresponding wild type （WT） Nipponbare, the mutant rio7 produced longer, narrower, thinner and lighter grains. The levels of glucose, fructose and sucrose in the mutant flo7 endosperm were higher than those in the WT endosperm, whereas the protein content was not affected. With respect to both amylose content and gel consistency, the mutant flo7 was lower than WT, but its alkali value was higher. Scanning electron microscopic examinations showed that the endosperm of the mutant flo7 contained irregular, loosely packed and compound starch granules. Genetic analysis indicated that the mutant phenotype was determined by a single recessive nuclear gene The flo7 locus was mapped to a region on the long arm of chromosome 12, within a 95.1 kb interval defined by the markers C2-11 and C5-15. There are 13 open reading frames in the mapping interval. Transcription profiling of the developing grains showed that a number of genes involved in starch synthesis were affected differently in the mutant flo7.

关键词： flo7 floury endosperm starch fine mapping rice mutant

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基于多示例学习图卷积网络的隐写者检测

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自动化学报 2024年第4期50卷 771-789页

作者：钟圣华张智深圳大学计算机与软件学院深圳518060 香港理工大学电子计算学系中国香港999077

隐写者检测通过设计模型检测在批量图像中嵌入秘密信息进行隐蔽通信的隐写者,对解决非法使用隐写术的问题具有重要意义.本文提出一种基于多示例学习图卷积网络(Multiple-instance learning graph convolutional network,MILGCN)的隐写... 详细信息

隐写者检测通过设计模型检测在批量图像中嵌入秘密信息进行隐蔽通信的隐写者,对解决非法使用隐写术的问题具有重要意义.本文提出一种基于多示例学习图卷积网络(Multiple-instance learning graph convolutional network,MILGCN)的隐写者检测算法,将隐写者检测形式化为多示例学习(Multiple-instance learning, MIL)任务.本文中设计的共性增强图卷积网络(Graph convolutional network, GCN)和注意力图读出模块能够自适应地突出示例包中正示例的模式特征,构建有区分度的示例包表征并进行隐写者检测.实验表明,本文设计的模型能够对抗多种批量隐写术和与之对应的策略.

关键词：图像隐写者检测图卷积网络多示例学习示例包表征

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Mapping quantitative trait loci associated with starch paste viscosity attributes by using double haploid populations of rice (Oryza sativa L.)

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Journal of Integrative Agriculture 2020年第7期19卷 1691-1703页

作者： Tahmina SHAR sheng zhong-hua Umed ALI Sajid FIAZ WEI Xiang-jin XIE Li-hong JIAO Gui-ai Fahad ALI SHAO Gao-neng HU Shi-kai HU Pei-song TANG Shao-qing State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research InstituteHangzhou 310006P.R.China

The paste viscosity attributes of starch,measured by rapid visco analyzer(RVA),are important factors for the evaluation of the cooking and eating qualities of rice in breeding *** determine the genetic roots of the paste viscosity attributes of rice grains,quantitative trait loci(QTLs)associated with the paste viscosity attributes were mapped,using a double haploid(DH)population derived from zhongjiazao 17(YK17),a super rice variety,crossed with D50,a tropic japonica ***-four QTLs,for seven parameters of the RVA profiles,were identified in three planting *** 54 QTLs were located on all of the 12 chromosomes,with a single QTL explaining 5.99 to 47.11%of phenotypic *** the QTLs identified,four were repeatedly detected under three environmental conditions and the other four QTLs were repeated under two *** of the QTLs detected for peak viscosity(PKV),trough viscosity(TV),cool paste viscosity(CPV),breakdown viscosity(BDV),setback viscosity(SBV),and peak time(PeT)were located in the interval of RM 6775-RM 3805 under all three environmental conditions,with the exception of pasting temperature(PaT).For digenic interactions,eight QTLs with six traits were identified for additivexenvironment interactions in all three planting *** epistatic interactions were estimated only for PKV,SBV and *** present study will facilitate further understanding of the genetic architecture of eating and cooking quality(ECQ)in the rice quality improvement program.

关键词： RVA profiles eating and cooking quality(ECQ) quantitative trait loci(QTL) DH population rice

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Genetic Analysis and Molecular Mapping of Novel White Striped Leaf Mutant Gene in Rice

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Rice science 2013年第5期20卷 336-342页

作者： sheng zhong-hua WEI Xiang-jin SHAO Gao-neng SONG Jian LUO Ju HU Pei-song TANG Shao-qing CHEN Li-yun Rice Research Institute Hunan Agricultural University China National Rice Research Institute

A new white striped leaf mutant wsll was discovered from Nipponbare mutated by ethyl methanesulfonate. The mutant showed white striped leaves at the seedling stage and the leaves gradually turned green after the tillering stage. The chlorophyll content of wsll was significantly lower than that of wild-type during the fourth leaf stage, tillering stage and booting stage. The numbers of chloroplast, grana and grana lamella were reduced and the thylakoids were degenerated in wsll compared with wild type. Genetic analysis showed that the wsll was controlled by a single recessive gene. Molecular mapping of the wsll was performed using an F2 population derived from wsll/Nanjing 11. The wsll was finally mapped on the telomere region of chromosome 9 and positioned between simple sequence repeat markers RM23742 and RM23759 which are separated by approximately 486.5 kb. The results may facilitate map-based cloning of wsll and understanding of the molecular mechanism of the regulation of leaf-color by WSL1 in rice.

关键词： rice white striped leaf mutant genetic analysis gene mapping

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Identification of QTLs associated with cadmium concentration in rice grains

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Journal of Integrative Agriculture 2018年第7期17卷 1563-1573页

作者： HU Da-wei sheng zhong-hua LI Qian-long CHEN Wei WEI Xiang-jin XIE Li-hong JIAO Gui-ai SHAO Gao-neng WANG Jian-long TANG Shao-qing HU Pei-song State Key Laboratory of Rice Biology Ministry of Science and Technology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research Institute College of Agronomy Hunan Agricultural University

Cadmium（Cd） contamination in rice has been a hot topic of research because of its potential risk to human health. In this study, a double haploid（DH） population derived from zhongjiazao 17（YK17）（an early-season indica cultivar）×D50（a tropical japonica cultivar） was used to identify quantitative trait loci（QTLs） associated with Cd concentration in brown rice（CCBR） and Cd concentration in milled rice（CCMR）. Continuous and wide variation for CCBR and CCMR were observed among the DH population. Correlation analysis revealed a positive and highly significant correlation between the two traits. A total of 18 QTLs for CCBR and 14 QTLs for CCMR were identified in five different pot and field trials. Two pairs of QTLs for CCBR（qCCBR2-1 and qCCBR2-2, qCCBR9-1 and qCCBR9-2） and one pair of QTLs for CCMR（qCCMR5-1 and qCCMR5-2） were detected in multiple trials. The alleles increasing CCBR at the qC CBR2-1/qC CBR2-2 and qC CBR9-1/qC CBR9-2 QTLs were contributed by YK17 and D50, respectively, whereas the D50 allele at the qCCMR5-1/qCCMR5-2 QTLs increased CCMR. Eight pairs of QTLs for CCBR and CCMR, qCCBR2-2 and qCCMR2-2, qCCBR3 and qCCMR3, qCCBR4-2 and qCCMR4-1, qCCBR4-3 and qCCMR4-2, qCCBR4-4 and qCCMR4-3, qCCBR5 and qCCMR5-2, qCCBR7 and qCCMR7, and qCCBR11-1 and qCCMR11-2, co-localized on chromosomes 2, 3, 4, 5, 7, and 11, respectively. For all of these QTL pairs, except qCCBR5/qCCMR5-2, the additive effects came from YK17. In addition, four CCMR QTLs showing significant additive×environment interaction and two pairs of CCMR QTLs with bi-allelic epistatic interactions were identified. The results of this study could facilitate marker-assisted selection of breeding rice varieties with low Cd accumulation in grain.

关键词： Cd concentration in grain QTL mapping brown rice milled rice

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萃取预分离法分离富铕中钇矿新工艺

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中国有色金属学报 2005年第9期15卷 1476-1481页

作者：钟盛华廖晓宁江西农业大学理学院

采用一种新的串级萃取方式———萃取预分离法分离富铕中钇矿的新工艺。原料首先流入十几的三出口预先粗分离工艺,其萃余液La^Gd(TbDy)直接流入Nd/Sm工艺;中间出口流入(Gd)Tb^HoY(Er)Gd^Dy/Ho^LuY细分离工艺;出口负载有机相(Ho)Er^LuY流... 详细信息

采用一种新的串级萃取方式———萃取预分离法分离富铕中钇矿的新工艺。原料首先流入十几的三出口预先粗分离工艺,其萃余液La^Gd(TbDy)直接流入Nd/Sm工艺;中间出口流入(Gd)Tb^HoY(Er)Gd^Dy/Ho^LuY细分离工艺;出口负载有机相(Ho)Er^LuY流入Gd^Dy/Ho^LuY的洗涤段。结果表明,新工艺的粗分离工艺将占原料约70%的La^Gd(TbDy)预分离掉,使流入Gd^Dy/Ho^LuY工艺的稀土量减少约70%;由于Gd^Dy/Ho^LuY分组的萃余液GdTbDy含Ho2O3小于0.03%,省去原工艺的GdTbDy/HoY分离;新工艺的处理能力提高30%,酸碱消耗减少20%以上,贵重稀土元素Eu和Tb的存槽量大大减少。

关键词：富铕中钇矿萃取工艺萃取预分离法稀土

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预分离萃取法及其分离低钇离子稀土矿新工艺

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稀土 2012年第1期33卷 1-5页

作者：钟盛华江西农业大学理学院江西南昌330045 江西农业大学应用化学研究所江西南昌330045

预分离萃取法是首先用少量级数对待分离的原料进行预先分离,然后再流入级数较多的、进行相邻元素间分离的细分离工艺,从而减少进入级数较多的相邻元素分离工艺的料液量。因而,整体工艺的萃取槽体积减少25%～40%,有机相、水相及稀土金属... 详细信息

预分离萃取法是首先用少量级数对待分离的原料进行预先分离,然后再流入级数较多的、进行相邻元素间分离的细分离工艺,从而减少进入级数较多的相邻元素分离工艺的料液量。因而,整体工艺的萃取槽体积减少25%～40%,有机相、水相及稀土金属的存槽量减少25%～40%,酸碱消耗也减少30%～40%,废水排放量大为减少。预分离工艺有多种形式,相邻元素间的细分离工艺也有多种类型。本文介绍了预分离萃取法的形成缘由、基本原理,使用这种方法的基本原则和它的各种工艺形式,以及用预分离萃取法分离低钇离子稀土矿的新工艺。

关键词：萃取稀土分离工艺预分离萃取法低钇离子稀土矿

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Electrochemical behavior and electrolytic preparation of lead in eutectic NaCl−KCl melts

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Transactions of Nonferrous Metals Society of China 2020年第9期30卷 2568-2576页

作者： Zeng-li ZHU huan LIU Jie-shuang-yang CHEN Hui KONG Liang XU zhong-sheng hua Zhuo ZHAO School of Metallurgical Engineering Anhui University of TechnologyMa’anshan 243032China Jinguan Copper Branch Tongling Nonferrous Metals Group Holding Co.Ltd.Tongling 244000China Anhui Provincial Key Laboratory of Metallurgical Engineering&Resources Recycling Anhui University of TechnologyMa’anshan 243002China

A novel molten salt extraction process consisting of chlorination roasting and molten salt electrolysis was proposed to develop a more efficient and environmental friendly technology for recovering lead from spent lead acid batteries(LABs).The feasibility of this process was firstly assessed based on thermodynamics *** electrochemical behavior of Pb(II)on a tungsten electrode in the eutectic NaCl−KCl melts at 700℃ was then investigated in detail by transient electrochemical *** results indicated that the reduction reaction of Pb(II)in NaCl−KCl melts was a one-step process exchanging two electrons,and it was determined to be a quasi-reversible diffusion-controlled ***,potentiostatic electrolysis was carried out at−0.6 V(vs Ag/AgCl)in the NaCl−KCl−PbCl2 melts,and the obtained cathodic product was identified as pure Pb by X-ray diffraction *** investigation demonstrated that it is practically feasible to produce pure Pb metal by electrochemical reduction of PbCl2 in eutectic NaCl−KCl melts,and has provided important fundamental for the further study on lead recovery from spent LABs via molten salt extraction process.

关键词： electrochemical behavior Pb(II) reduction spent lead acid batteries eutectic NaCl−KCl melt

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