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Journal of Materials Science & Technology 2010年第6期26卷 523-528页

作者： Han chen Kui cheng zhicheng Wang Wenjian Weng Ge Shen Piyi Du Gaorong Han Department of Materials Science and Engineering State Key Laboratory of Silicon Materials Zhejiang UniversityHangzhou 310027 China

Porous NiO-Ce0.8Sm0.2O1.9（NiO-SDC） ceramics with homogeneous pore distribution were prepared using polystyrene （PS） spheres as pore templates. NiO-SDC powders were synthesized by a glycine-nitrate method, ultrasonically mixed with PS spheres in ethanol, dried and then pressed into green pellets. The pellets were sintered to yield porous NiO-SDC ceramics. The effects of the sintering temperature on the microstructure and mechanical strength of the ceramics were investigated. NiO-SDC ceramics sintered at 1200 and 1350℃ have interconnected pore structures and high compression strength. When single cells were fabricated using porous NiO-SDC ceramics as anode-supported layers, the peak power density of the cells at 600℃ was 333 and 353 ***-2 for ceramics sintered at 1200 and 1350℃, respectively. The results indicated that these porous ceramic materials are promising for anode substrates for solid oxide fuel cells.

关键词： Porous ceramic NiO-Ce0.8Sm0.2O1.9 (NiO-SDC) Polystyrene spheres Microstructure Anode-supported solid oxide fuel cells

Multi-year throughfall reduction enhanced the growth and non-structural carbohydrate storage of roots at the expenses of above-ground growth in a warm-temperate natural oak forest

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Forest Ecosystems 2023年第3期10卷 357-367页

作者： Cuiju Liu zhicheng chen Shirong Liu Kunfang Cao Baoliang Niu Xiaojing Liu Xiaomin Gao Key Laboratory of Forest Ecology and Environment National Forestry and Grassland AdministrationEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China Baotianman Forest Ecosystem Research Station Nanyang473000China Guangxi Key Laboratory of Forest Ecology and Conservation College of ForestryGuangxi UniversityNanning530004China Henan Baotianman Nature Reserve Administration Neixiang474350China

The more frequent occurrence and severer drought events resulting from climate change are increasingly affecting the physiological performance of trees and ecosystem carbon sequestration in many regions of the ***,our understanding of the mechanisms underlying the responses and adaption of forest trees to prolonged and multi-year drought is still *** address this problem,we conducted a long-term manipulative throughfall reduction(TFR,reduction of natural throughfall by 50%–70%during growing seasons)experiment in a natural oriental white oak(Quercus aliena *** Maxim.)forest under warm-temperate *** seven years of continuous TFR treatment,the aboveground growth in *** *** started to *** with the control plots,trees in the TFR treatment significantly reduced growth increments of stems(14.2%)and leaf area index(6.8%).The rate of net photosynthesis appeared to be more susceptible to changes in soil water in trees subjected to the TFR than in the *** TFR-treated trees allocated significantly more photosynthates to belowground,leading to enhanced growth and nonstructural carbohydrates(NSC)storage in *** 7-year continuous TFR treatment increased the biomass,the production and the NSC concentration in the fine roots by 53.6%,153.6%and 9.6%,*** were clear trade-offs between the aboveground growth and the fine root biomass and NSC storage in *** *** trees in response to the multi-year TFR treatment.A negative correlation between the fine root NSC concentration and soil water suggested a strategy of preferential C storage over growth when soil water became deficient;the stored NSC during water limitation would then help promote root growth when drought stress is *** findings demonstrate the warm-temperate oak forest adopted a more conservative NSC use strategy in response to long-term drought stress,with enhanced root growth and NSC storage at the exp

关键词： Climate change Carbon allocation Drought stress Forest ecophysiology Nonstructural carbohydrates Warm-temperate forests

Group-specific functional patterns of mitochondrion-related organelles shed light on their multiple transitions from mitochondria in ciliated protists

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Marine Life Science & Technology 2022年第4期4卷 609-623页

作者： zhicheng chen Jia Li Dayana E.Salas-Leiva Miaoying chen Shilong chen Senru Li Yanyan Wu Zhenzhen Yi Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring Guangdong Provincial Key Laboratory for Healthy and Safe AquacultureSchool of Life ScienceSouth China Normal UniversityGuangzhou510631China Department of Biochemistry University of CambridgeCambridgeUK

Adaptations of ciliates to hypoxic environments have arisen independently several *** on mitochondrion-related organelle(MRO)metabolisms from distinct anaerobic ciliate groups provide evidence for understanding the transitions from mitochondria to MROs within *** deepen our knowledge about the evolutionary patterns of ciliate anaerobiosis,mass-culture and single-cell transcriptomes of two anaerobic species,Metopus laminarius(class Armophorea)and Plagiopyla ***(class Plagiopylea),were sequenced and their MRO metabolic maps were *** addition,we carried out comparisons using publicly available predicted MRO proteomes from other ciliate classes(i.e.,Armophorea,Litostomatea,Muranotrichea,Oligohymenophorea,Parablepharismea and Plagiopylea).We found that single-cell transcriptomes were similarly comparable to their mass-culture counterparts in predicting MRO metabolic pathways of *** patterns of the components of the MRO metabolic pathways might be divergent among anaerobic ciliates,even among closely related ***,our findings indicate the existence of group-specific functional relics of electron transport chains(ETCs).Detailed group-specific ETC functional patterns are as follows:full oxidative phosphorylation in Oligohymenophorea and Muranotrichea;only electron-transfer machinery in Armophorea;either of these functional types in Parablepharismea;and ETC functional absence in Litostomatea and *** findings suggest that adaptation of ciliates to anaerobic conditions is group-specific and has occurred multiple *** results also show the potential and the limitations of detecting ciliate MRO proteins using single-cell transcriptomes and improve the understanding of the multiple transitions from mitochondria to MROs within ciliates.

关键词： Anaerobic metabolism Mitochondrion-related organelle Single-cell transcriptome Evolutionary transition

Divergent allocations of nonstructural carbohydrates shape growth response to rainfall reduction in two subtropical plantations

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Forest Ecosystems 2022年第2期9卷 222-233页

作者： Xinwei Guo Shirong Liu Hui Wang zhicheng chen Jinglei Zhang Lin chen Xiuqing Nie Lu Zheng Daoxiong Cai Hongyan Jia Baoliang Niu Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Ecology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China Experimental Center of Tropical Forestry Chinese Academy of ForestryPingxiang532600China Youyiguan Forest Ecosystem Research Station Pingxiang532600China

Nonstructural carbohydrates(NSC)are indicators of tree carbon balance and play an important role in regulating plant growth and ***,our understanding of the mechanism underlying drought-induced response of NSC reserves remains ***,we conducted a long-term throughfall exclusion(TFE)experiment to investigate the seasonal responses of NSC reserves to manipulative drought in two contrasting tree species(a broadleaved tree Castanopsis hystrix *** a coniferous tree Pinus massoniana Lamb.)of the subtropical *** found that in the dry season,the two tree species differed in their responses of NSC reserves to TFE at either the whole-tree level or by organs,with significantly depleted total NSC reserves in roots in both *** the TFE treatment,there were significant increases in the NSC pools of leaves and branches in ***,which were accompanied by significant decreases in fine root biomass and radial growth without significant changes in canopy photosynthesis;while *** exhibited significant increase in fine root biomass without significant changes in radial *** results suggested that under prolonged water limitation,NSC usage for growth in *** is somewhat impaired,such that the TFE treatment resulted in NSC accumulation in aboveground organs(leaf and branch);whereas *** is capable of efficiently utilizing NSC reserves to maintain its growth under drought *** findings revealed divergent NSC allocations under experimental drought between the two contrasting tree species,which are important for better understanding the differential impacts of climate change on varying forest trees and plantation types in subtropical China.

关键词： Photosynthesis Carbon balance Tree growth Nonstructural carbohydrates Carbon limitation

Therapeutic effect of Guijiajiao(Colla Carapacis et Plastri) on bone regeneration in rats and zebrafish

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Journal of Traditional Chinese Medicine 2018年第2期38卷 197-210页

作者： Su Weiyang Feng Chienwei Tseng Chungchih Hung Hanchun chen zhicheng Lee Hsinpai Jean Yenhsuan Wu Shingyi Sean Wen Zhihong Department of Marine Biotechnology and Resources National Sun Yat-Sen University Division of Dentistry Zuoying Branch of Kaohsiung Armed Forces General Hospital Doctoral Degree Program in Marine Biotechnology Academia Sinica Doctoral Degree Program in Marine Biotechnology National Sun Yat-Sen University The School of Chinese Medicine for Post Baccalaureate I Shou University Section of Orthopedic Surgery PingtungChristian Hospital Section of Orthopedic Surgery Pingtung Christian Hospital

OBJECTIVE:To investigate the effect of Guijiajiao(Colla Carapacis et Plastri, CCP), the glue of tortoise shell, on bone regeneration in zebrafish and male Wistar ***: In this study, we applied in vitro and in vivo models, tissue section analysis, and quantitative polymerase chain reaction to assess the effects of CCP on bone repair. MG-63 cells were used in alkaline phosphatase(ALP) activity and mineralization assays. Zebrafish and male Wistar rats were used to evaluate the effects of CCP on bone repair in ***: A simple preparation of CCP promoted osteogenesis in vivo and in vitro, and promoted MG-63 cell proliferation as well as ALP activity and mineralization. In addition, CCP activated Akt and extracellular signaling-regulated kinase pathways and significantly increased the expression of ossification-related genes and proteins such as runt-related transcription factor-2, osteocalcin, and osteopontin. The in vivo results revealed promotion of osteogenesis by immersing zebrafish in CCP for 72 *** oral dose of 1.25 g/kg CCP significantly improved skull defects in rats, which was accompanied by an increase in serum ALP ***: One of the ingredients of Guilu Erxianjiao(tortoise shell and deer horn formula) pro-vides a practical alternative therapy for bone regeneration.

关键词： Colla Carapacis et Plastri Testudinis Bone regeneration Alkaline phosphatase Rat Zebrafish

Natural variation of GmFATA1B regulates seed oil content and composition in soybean

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Journal of Integrative Plant Biology 2023年第10期65卷 2368-2379页

作者： Zhandong Cai Peiqi Xian Yanbo cheng Yuan Yang Yakun Zhang Zihang He Chuwen Xiong Zhibin Guo zhicheng chen Huiqian Jiang Qibin Ma Hai Nian Liangfa Ge Guangdong Sub‐center of National Center for Soybean Improvement South China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region Shaoguan UniversityShaoguan 512000China Department of Grassland Science College of Forestry and Landscape ArchitectureSouth China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China

Soybean(Glycine max) produces seeds that are rich in unsaturated fatty acids and is an important oilseed crop worldwide. Seed oil content and composition largely determine the economic value of soybean. Due to natural genetic variation, seed oil content varies substantially across soybean cultivars. Although much progress has been made in elucidating the genetic trajectory underlying fatty acid metabolism and oil biosynthesis in plants, the causal genes for many quantitative trait loci(QTLs) regulating seed oil content in soybean remain to be revealed. In this study, we identified Gm FATA1B as the gene underlying a QTL that regulates seed oil content and composition, as well as seed size in soybean. Nine extra amino acids in the conserved region of Gm FATA1B impair its function as a fatty acyl–acyl carrier protein thioesterase, thereby affecting seed oil content and composition. Heterogeneously overexpressing the functional Gm FATA1B allele in Arabidopsis thaliana increased both the total oil content and the oleic acid and linoleic acid contents of seeds. Our findings uncover a previously unknown locus underlying variation in seed oil content in soybean and lay the foundation for improving seed oil content and composition in soybean.

关键词： GmFATA1B natural variation QTL seed oil content soybean

The State of the Art of Data Science and Engineering in Structural Health Monitoring

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Engineering 2019年第2期5卷 234-242页

作者： Yuequan Bao zhicheng chen Shiyin Wei Yang Xu Zhiyi Tang Hui Li School of Civil Engineering Harbin Institute of Technology Harbin 150090 China

Structural health monitoring (SHM) is a multi-discipline field that involves the automatic sensing of structural loads and response by means of a large number of sensors and instruments, followed by a diagnosis of the structural health based on the collected data. Because an SHM system implemented into a structure automatically senses, evaluates, and warns about structural conditions in real time, massive data are a significant feature of SHM. The techniques related to massive data are referred to as data science and engineering, and include acquisition techniques, transition techniques, management techniques, and processing and mining algorithms for massive data. This paper provides a brief review of the state of the art of data science and engineering in SHM as investigated by these authors, and covers the compressive sampling-based data-acquisition algorithm, the anomaly data diagnosis approach using a deep learning algorithm, crack identification approaches using computer vision techniques, and condition assessment approaches for bridges using machine learning algorithms. Future trends are discussed in the conclusion.

关键词： Structural health monitoring Monitoring data Compressive sampling Machine learning Deep learning

Classification of Ferrallitic Soils in Chinese Soil Taxonomy

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Pedosphere 2000年第2期10卷 125-133页

作者： GONG ZITONG chen zhicheng ZHAO WENJUN and SHI HUA(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Naroing 210008 China) Institute of Soil Science the Chinese Academy of Sciences P.O. Box 821 Nanjing 210008 China

The development of the classification of ferrallitic soils in China is reviewed and the classification ofFerralisols and Ferrisols in Chinese Soil Taxonomy is introduced in order to discuss the correlation betweenthe ferrallitic soil classification in the Chinese Soil Taxonomy and those of the other soil classification *** the former soil classification systems of China, the ferrallitic soils were classified into the soil groups ofLatosols, Latosolic red soils, Red soils, Yellow soils and Dry red soils, according to the combination of soilforming conditions, soil-forming processes, soil features and soil properties. In the Chinese Soil Taxonomy,most of ferrallitic soils are classified into the soil orders of Ferralisols and Ferrisols based on the diagnostichorizons and/or diagnostic characteristics with quantitatively defined properties. Ferralisols are the soilsthat have ferralic horizon, and they are merely subdivided into one suborder and two soil groups. Ferrisolsare the soils that have LAC-ferric horizon but do not have ferralic horizon, and they are subdivided intothree suborders and eleven soil groups. Ferralisols may correspond to part of Latosols and Latosolic red *** may either correspond to part of Red soils, Yellow soils and Dry red soils, or correspond to part ofLatosols and Latosolic red soils.

关键词： Ferralisols Ferrisols Chinese Soil Taxonomy

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城市信息化战略与城市发展战略匹配性研究

同济大学学报（自然科学版） 2012年第2期40卷 320-324页

作者：陈志成白庆华同济大学经济与管理学院上海200092 江西理工大学经济管理学院江西赣州341000

借鉴系统科学、熵理论,提出了城市发展战略与城市信息化战略系统序参量分量有序度、序参量质量、子系统有序度和战略匹配度等概念,建立了战略匹配度相关计量模型.并以上海为例,设计了相关序参量指标,运用2005—2009年的数据进行了实证分... 详细信息

借鉴系统科学、熵理论,提出了城市发展战略与城市信息化战略系统序参量分量有序度、序参量质量、子系统有序度和战略匹配度等概念,建立了战略匹配度相关计量模型.并以上海为例,设计了相关序参量指标,运用2005—2009年的数据进行了实证分析,研究发现城市发展战略子系统相对有序,而城市信息化战略子系统演化波动较大,城市信息化战略与城市发展战略系统匹配度不高,处于无序状态.

关键词：城市信息化战略城市发展匹配熵

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不同水胶比的粉煤灰混凝土的自收缩(英文)

硅酸盐学报 2014年第5期42卷 585-589页

作者：阎培渝陈志城清华大学土木工程系教育部土木工程安全与耐久重点实验室北京100084 五邑大学土木建筑学院广东江门529020

高强混凝土的自收缩是导致其开裂的重要因素。为此,对不同水胶比的粉煤灰混凝土在水化初期的强度发展与自收缩的关系进行了研究。结果显示,粉煤灰混凝土的强度与自收缩均随着水胶比增加而下降,并随着粉煤灰掺量的增加而近似线性下降。... 详细信息

高强混凝土的自收缩是导致其开裂的重要因素。为此,对不同水胶比的粉煤灰混凝土在水化初期的强度发展与自收缩的关系进行了研究。结果显示,粉煤灰混凝土的强度与自收缩均随着水胶比增加而下降,并随着粉煤灰掺量的增加而近似线性下降。各种组成的混凝土的自收缩均表现为水化第1d内快速增加,随后缓慢增加。混凝土的收缩特性可根据其力学性能来预测。

关键词：自收缩强度粉煤灰水胶比