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| 1 | Precise A. T to G-C Base Editing in the RiceGenome显示文摘 | Kai Hua Xiaoping Tao Fengtong Yuan Dong Wang Jian-Kang Zhu | 2018 | Molecular Plant2018，11，4： | 60 |
| 2 | Screening and breeding of high taxol producing fungi by genome shuffling显示文摘To apply the fundamental principles of genome shuffling in breeding of taxol-producing fungi, Nodulisporium sylviform was used as starting strain in this work. The procedures of protoplast fusion and genome shuffling were studied. Three hereditarily stable strains with high taxol production were obtained by four cycles of genome shuffling. The qualitative and quantitative analysis of taxol produced was confirmed using thin-layer chromatography (TLC), high performance liquid chromatography (HPLC) and LC-MS. A high taxol producing fungus, Nodulisporium sylviform F4-26, was obtained, which produced 516.37 μg/L taxol. This value is 64.41% higher than that of the starting strain NCEU-1 and 31.52%―44.72% higher than that of the parent strains. | ZHAO Kai, PING WenXiang, ZHANG LiNa, LIU Jun, LIN Yan, JIN Tao & ZHOU DongPo Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China | 2008 | Science China(Life Sciences)2008，51，3： | 25 |
| 3 | Composite of sulfur impregnated in porous hollow carbon spheres as the cathode of Li-S batteries with high performance显示文摘 | Kai Zhang Qing Zhao Zhanliang Tao Jun Chen | 2013 | Nano Research2013，6，1： | 25 |
| 4 | Genome Engineering in Rice Using Cas9 Variants that Recognize NG PAM Sequences显示文摘CRISPR/Cas9 genome editing relies on sgRNA-target DNA base pairing and a short downstream PAM sequence to recognize target DNA. The strict protospacer adjacent motif (PAM) requirement hinders applications of the CRISPR/Cas9 system since it restricts the targetable sites in the genomes. xCas9 and SpCas9-NG are two recently engineered SpCas9 variants that can recognize more relaxed NG PAMs, implying a great potential in addressing the issue of PAM constraint. Here we use stable transgenic lines to evaluate the efficacies of xCas9 and SpCas9-NG in performing gene editing and base editing in rice. We found that xCas9 can efficiently induce mutations at target sites with NG and GAT PAM sequences in rice. However, base editors containing xCas9 failed to edit most of the tested target sites. SpCas9-NG exhibited a robust editing activity at sites with various NG PAMs without showing any preference for the third nucleotide after NG. Moreover, we showed that xCas9 and SpCas9-NG have higher specificity than SpCas9 at the CGG PAM site. We further demonstrated that different forms of cytosine or adenine base editors containing SpCas9-NG worked efficiently in rice with broadened PAM compatibility. Taken together, our work has yielded versatile genome-engineering tools that will significantly expand the target scope in rice and other crops. | Kai Hua Xiaoping Tao Peijin Han Rui Wang Jian-Kang Zhu | 2019 | Molecular Plant2019，12，7： | 22 |
| 5 | Urban Three-dimensional Expansion and Its Driving Forces——A Case Study of Shanghai,China显示文摘Urban expansion is a phenomenon of urban space increase,and an important measuring index of the process of urbanization.Taking Shanghai as an example,the changes of urban average height and built-up area were studied to represent city's vertical and horizontal increases respectively,and statistical methods were used to analyze the driving forces of urban expansion.The research drew following conclusions:1) The urban expansion process of Shanghai from 1985 to 2006 had a clear periodic feature,and could be divided into three stages:vertical expansion in dominance,coordinated vertical and horizontal expansion,and horizontal expansion in dominance.2) The average height and quantity of buildings in core city were significantly bigger than those in suburbs,but the changing speed of the latter was faster.And 3) urbanization process was the major driving force for the city's horizontal expansion,while industrial structure improvement was the key driving factor for the vertical expansion.Those two driving forces were simultaneously affected by city's political factors. | SHI Longyu SHAO Guofan CUI Shenghui LI Xuanqi LIN Tao YIN Kai ZHAO Jingzhu | 2009 | Chinese Geographical Science2009，19，4： | 20 |
| 6 | Hydrogen Peroxide-Mediated Growth of the Root System Occurs via Auxin Signaling Modification and Variations in the Expression of Cell-Cycle Genes in Rice Seedlings Exposed to Cadmium Stress显示文摘The link between root growth,H2O2,auxin signaling,and the cell cycle in cadmium (Cd)-stressed rice (Oryza sativa L.cv.Zhonghua No.11) was analyzed in this study.Exposure to Cd induced a significant accumulation of Cd,but caused a decrease in zinc (Zn) content which resulted from the decreased expression of OsHMA9 and OsZIP.Analysis using a Cd-specific probe showed that Cd was mainly localized in the meristematic zone and vascular tissues.Formation and elongation of the root system were significantly promoted by 3-amino-1,2,4-triazole (AT),but were markedly inhibited by N,N'dimethylthiourea (DMTU) under Cd stress.The effect of H2O2 on Cd-stressed root growth was further confirmed by examining a gain-of-function rice mutant (carrying catalase1 and glutathione-S-transferase) in the presence or absence of diphenylene iodonium.DR5-GUS staining revealed close associations between H2O2 and the concentration and distribution of auxin.H2O2 affected the expression of key genes,including OsYUCCA,OsPIN,OsARF,and OsIAA,in the auxin signaling pathway in Cd-treated plants.These results suggest that H2O2 functions upstream of the auxin signaling pathway.Furthermore,H2O2 modified the expression of cell-cycle genes in Cd-treated roots.The effects of H2O2 on root system growth are therefore linked to auxin signal modification and to variations in the expression of cell-cycle genes in Cd-stressed rice.A working model for the effects of H2O2 on Cd-stressed root system growth is thus proposed and discussed in this paper. | Feng-Yun Zhao Ming-Ming Han Shi-Yong Zhang Kai Wang Cheng-Ren Zhang Tao Liu Wen Liu | 2012 | Journal of Integrative Plant Biology2012，54，12： | 18 |
| 7 | Identification and differentiation of Panax ginseng,Panax quinquefolium, and Panax notoginseng by monitoring multiple diagnostic chemical markers显示文摘To differentiate traditional Chinese medicines(TCM) derived from congeneric species in TCM compound preparations is usually challenging. The roots of Panax ginseng(PG), Panax quinquefolium(PQ) and Panax notoginseng(PN) are used as popular TCM. They contain similar triterpenoid saponins(ginsenosides) as the major bioactive constituents. Thus far, only a few chemical markers have been discovered to differentiate these three species. Herein we present a multiple marker detection approach to effectively differentiate the three Panax species, and to identify them in compound preparations. Firstly, 85 batches of crude drug samples(including 32 PG, 30 PQ, and 23 PN) were analyzed by monitoring 40 major ginsenosides in the extracted ion chromatograms(EICs) using a validated LC–MS fingerprinting method. Secondly, the samples were clustered into different groups by pattern recognition chemometric approaches using PLS-DA and OPLS-DA models, and17 diagnostic chemical markers were discovered. Aside from the previously known Rf and p-F11, ginsenoside Rs1 could be a new marker to differentiate PG from PQ. Finally, the above multiple chemical markers were used to identify the Panax species in 60 batches of TCM compound preparations. | Wenzhi Yang Xue Qiao Kai Li Jingran Fan Tao Bo De-an Guo Min Ye | 2016 | Acta Pharmaceutica Sinica B2016，6，6： | 18 |
| 8 | Effect of Ce doping of TiO_2 support on NH_3-SCR activity over V_2O_5–WO_3/CeO_2–TiO_2 catalyst显示文摘CeO2–TiO2composite supports with different Ce/Ti molar ratios were prepared by a homogeneous precipitation method, and V2O5–WO3/CeO2–TiO2catalysts for the selective catalytic reduction(SCR) of NOx with NH3 were prepared by an incipient-wetness impregnation method. These catalysts were characterized by means of BET, XRD, UV–Vis,Raman and XPS techniques. The results showed that the catalytic activity of V2O5–WO3/TiO2 was greatly enhanced by Ce doping(molar ratio of Ce/Ti = 1/10) in the TiO2 support.The catalysts that were predominantly anatase TiO2 showed better catalytic performance than the catalysts that were predominantly fluorite CeO2. The Ce additive could enhance the surface adsorbed oxygen and accelerate the SCR reaction. The effects of O2 concentration, ratio of NH3/NO, space velocity and SO2 on the catalytic activity were also investigated. The presence of oxygen played an important role in NO reduction. The optimal ratio of NH3/NO was 1/1 and the catalyst had good resistance to SO2 poisoning. | Kai Cheng Jian Liu Tao Zhang Jianmei Li Zhen Zhao Yuechang Wei Guiyuan Jiang Aijun Duan | 2014 | Journal of Environmental Sciences2014，26，10： | 18 |
| 9 | Suppression of m6A reader Ythdf2 promotes hematopoietic stem cell expansion显示文摘 | Zhenrui Li Pengxu Qian Wanqing Shao Hailing Shi Xi C. He Madelaine Gogol Zulin Yu Yongfu Wang Meijie Qi Yunfei Zhu John M. Perry Kai Zhang Fang Tao Kun Zhou Deqing Hu Yingli Han Chongbei Zhao Richard Alexander Hanzhang Xu Shiyuan Chen Allison Peak Kathyrn Hall Michael Peterson Anoja Perera Jeffrey S. Haug Tari Parmely Hua Li Bin Shen Julia Zeitlinger Chuan He Linheng Li | 2018 | Cell Research2018，28，9： | 18 |
| 10 | Broussonin E suppresses LPS-induced inflammatory response in macrophages via inhibiting MAPK pathway and enhancing JAK2-STAT3 pathway显示文摘Macrophages play an important role in inflammation, and excessive and chronic activation of macrophages leads to systemic inflammatory diseases, such as atherosclerosis and rheumatoid arthritis. In this paper, we explored the anti-inflammatory effect of broussonin E, a novel phenolic compound isolated from the barks of Broussonetia kanzinoki, and its underlying molecular mechanisms. We discovered that Broussonin E could suppress the LPS-induced pro-inflammatory production in RAW264.7 cells, involving TNF-α, IL-1β, IL-6, COX-2 and iNOS. And broussonin E enhanced the expressions of anti-inflammatory mediators such as IL-10, CD206 and arginase-1(Arg-1) in LPS-stimulated RAW264.7 cells. Further, we demonstrated that broussonin E inhibited the LPS-stimulated phosphorylation of ERK and p38 MAPK. Moreover, we found that broussonin E could activate janus kinase(JAK) 2, signal transducer and activator of transcription(STAT) 3. Downregulated pro-inflammatory cytokines and upregulated anti-inflammatory factors by broussonin E were abolished by using the inhibitor of JAK2-STAT3 pathway, WP1066. Taken together, our results showed that broussonin E could suppress inflammation by modulating macrophages activation state via inhibiting the ERK and p38 MAPK and enhancing JAK2-STAT3 signaling pathway, and can be further developed as a promising drug for the treatment of inflammation-related diseases such as atherosclerosis. | HUANG Shao-Peng GUAN Xin KAI Guo-Yin XU Ya-Zhou XU Yuan WANG Hao-Jie PANG Tao ZHANG Lu-Yong LIU Ying | 2019 | Chinese Journal of Natural Medicines2019，17，5： | 17 |
| 11 | Deep Reinforcement Learning Based Mobile Robot Navigation:A Review显示文摘Navigation is a fundamental problem of mobile robots,for which Deep Reinforcement Learning(DRL)has received significant attention because of its strong representation and experience learning abilities.There is a growing trend of applying DRL to mobile robot navigation.In this paper,we review DRL methods and DRL-based navigation frameworks.Then we systematically compare and analyze the relationship and differences between four typical application scenarios:local obstacle avoidance,indoor navigation,multi-robot navigation,and social navigation.Next,we describe the development of DRL-based navigation.Last,we discuss the challenges and some possible solutions regarding DRL-based navigation. | Kai Zhu Tao Zhang | 2021 | Tsinghua Science and Technology2021，26，5： | 15 |
| 12 | Spatial distribution and focal mechanism solutions of the Wenchuan earthquake series:Results and implications显示文摘We relocate the spatial distribution of the devastating 12 May 2008 Wenchuan earthquake and its aftershocks.The relocation database is obtained from 89 stations deployed by the China Earthquake Administration,including 54 525 seismograms from 1 376 local earthquakes over MS3.5 between 12 May 2008 and 3 August 2008.The cross-correlation technique used in this paper has greatly improved the relocation precision by giving much more accurate P-wave differential travel-time measurements than those obtained from routinely picked phase onsets.At the same time,we pick P-wave polarity observations of the Wenchuan earthquake series (hereafter referred to as WES) from 1 023 stations in China and 59 IRIS (Incorporated Research Institutions of Seismology) stations.Then,employing a newly developed program CHNYTX,we obtain 83 well-determined focal mechanism solutions (hereafter referred to as FMSs).Based on spatial distribution and FMSs of the WES,we draw following conclusions:(1) The region near the main shock exhibits a buried low-angle northwest-dipping seismic zone with the main shock at its upper end and two conjugated seismic zones dipping southeast with roughly equal dip-angle;(2) The compressional directions of all kinds of FMSs of the WES are subhorizontal,which reflects the dominant stress in this area is compressional;(3) The principal compressional direction of the regional stress around Wenchuan is roughly perpendicular to the strike of Beichuan-Yingxiu fault,while around Qingchuan it is roughly parallel to the strike of Qingchuan fault.In intermediate part of the Longmenshan area,the principal compressional direction of the stress should be in-between;(4) The possibly existed molten materials in the lower crust of Songpan-Garze terrain have small contribution to the local stress state in Longmenshan area.The listric geometries of the Longmenshan faults most probably resulted from subhorizontal compression along NW-SE direction in history. | Chen Cai Chunquan Yu Kai Tao Xingping Hu Yuan Tian Hao Zhang Xiaofeng Cui Jieyuan Ning | 2011 | Earthquake Science2011，24，1： | 13 |
| 13 | Eleven COVID-19 Outbreaks with Local Transmissions Caused by the Imported SARS-CoV-2 Delta VOC-China,July-August,2021显示文摘Starting from December 2019,Wuhan,China,encountered the first outbreak of coronavirus disease 2019(COVID-19)(1-2).The epidemic was successfully suppressed by strict containment so that the number of infected people was reduced to 0 on April 8,2020(3–4).After that,China experienced roughly 3 dozen outbreaks with local transmission caused by imported severe acute respiratory syndrome coronavirus 2(SARS-CoV-2). | Lei Zhou Kai Nie Hongting Zhao Xiang Zhao Bixiong Ye Ji Wang Cao Chen Hong Wang Jiangli Di Jinsong Li Chao Li Zhixiao Chen Ruiqi Ren Peihua Niu Hui Chen Tao Chen Yali Wang Lili Li Bingxue Han Ruhan A Si Chen Dan Li Dan Li Chunxia Jin Xin Zhang Jiangmei Liu Chunyu Xu Yecheng Yao Yenan Feng Zhili Li Bike Zhang Yang Song Peter Hao Yanping Zhang Hao Li Qun Li George F.Gao Guoqing Shi Wenbo Xu | 2021 | China CDC weekly2021，3，41： | 13 |
| 14 | TALEN-based generation of a cynomolgus monkey disease model for human microcephaly显示文摘基因在非人类的首领编辑可以为在人探索病原学和遗传上基于的神经病学的混乱的治疗学的策略导致珍贵模型。然而,仔细在人模仿病理学、行为的赤字的神经病学的混乱的一个猴子模型成功地还没被产生了。Microcephalin 1 (MCPH1 ) 在人的大脑,和智力迟钝伴随的 MCPH1 变化原因头小畸型的进化被含有。这里,我们产生了用抄写带 biallelic MCPH1 变化的一只 cynomolgus 猴子(Macaca fascicularis ) 像使活跃之物的受动器核酸酶。猴子概括了大多数在病人观察的重要临床的特征,包括在头圆周,早熟的染色体冷凝作用(PCC ) ,语料库 callosum 的发育不全和上面的手足 spasticity 的显著减小。而且,在变异的真皮的成纤维细胞的 MCPH1 的 overexpression 救了 PCC 症候群。这个猴子模型可以帮助我们阐明在人的头小畸型并且更好的致病的 MCPH1 的角色在首领大脑尺寸的进化理解这蛋白质的功能。 | Qiong Ke Weiqiang Li Xingqiang Lai Hong Chen Lihua Huang Zhuang Kang Kai Li Jie Ren Xiaofeng Lin Haiqing Zheng Weijun Huang Yunhan Ma Dongdong Xu Zheng Chen Xinming Song Xinyi Lin Min Zhuang Tao Wang Fengfeng Zhuang Jianzhong Xi Frank Fuxiang Mao Huimin Xia Bruce T Lahn Qi Zhou Shihua Yang Andy Peng Xiang | 2016 | Cell Research2016，26，9： | 13 |
| 15 | Genome-Wide Expression Pattern Analyses of the Arabidopsis Leucine-Rich Repeat Receptor-Like Kinases显示文摘像受体的蛋白质 kinases (RLK ) 是在房间房间和房间环境通讯起关键作用的 transmembrane 蛋白质的一个大组。基于细胞外的领域结构, RLK 被分类进超过 21 个亚科,充满白氨酸的重复 RLK (LRR-RLKs ) 在象 Arabidopsis 和米饭那样的植物在之中属于最大的亚科。在 Arabidopsis,有近似 223LRR-RLKs,但是哪个中的仅仅大约 60 个机能上地迄今为止被描述了。为了系统地在调整调查 LRR-RLKs 的 theroles,种生长,开发,和压力改编,我们产生了 promoter::GUS 为在 Arabidopsis 的所有 223 LRR-RLK 基因的转基因的植物并且在各种各样的发展舞台分析了他们的详细表达式模式。Theresults 提供 forfunctionally 阐明的珍贵资源这个大、必要的发信号的蛋白质亚科。 | Yunzhe Wu Qingqing Xun Yi Guo Jinghua Zhang Kaili Cheng Tao Shi Kai He Suiwen Hou Xiaoping Gou Jia Li | 2016 | Molecular Plant2016，9，2： | 13 |
| 16 | Circular RNA circVAPA promotes chemotherapy drug resistance in gastric cancer progression by regulating miR-125b-5p/STAT3 axis显示文摘BACKGROUND Gastric cancer(GC)is a prevalent malignancy,leading to a high incidence of cancer-associated death.Cisplatin(DDP)-based chemotherapy is the principal therapy for clinical GC treatment,but DDP resistance is a severe clinical challenge and the mechanism remains poorly understood.Circular RNAs(circRNAs)have been identified to play crucial roles in modulating the chemoresistance of gastric cancer cells.AIM To explore the effect of circVAPA on chemotherapy resistance during GC progression.METHODS The effect of circVAPA on GC progression and chemotherapy resistance was analyzed by MTT assay,colony formation assay,Transwell assay,wound healing assay,and flow cytometry analysis in GC cells and DDP resistant GC cell lines,and tumorigenicity analysis in nude mice in vivo.The mechanism was investigated by luciferase reporter assay,quantitative real-time PCR,and Western blot analysis.RESULTS CircVAPA expression was up-regulated in clinical GC tissues compared with normal samples.CircVAPA depletion inhibited proliferation,migration,and invasion and increased apoptosis of GC cells.The expression of circVAPA,STAT3,and STAT3 downstream genes was elevated in DDP resistant SGC7901/DDP cell lines.CircVAPA knockdown attenuated the DDP resistance of GC cells.Mechanically,circVAPA was able to sponge miR-125b-5p,and miR-125b-5p could target STAT3 in the GC cells.MiR-125b-5p inhibitor reversed circVAPA depletion-enhanced inhibitory effect of DDP on GC cells,and STAT3 knockdown blocked circVAPA overexpression-induced proliferation of DDPtreated SGC7901/DDP cells.The depletion of STAT3 and miR-125b-5p inhibitor reversed circVAPA depletion-induced GC cell apoptosis.Functionally,circVAPA contributed to the tumor growth of SGC7901/DDP cells in vivo.CONCLUSION CircVAPA promotes chemotherapy resistance and malignant progression in GC by miR-125b-5p/STAT3 signaling.Our findings present novel insights into the mechanism by which circVAPA regulates chemotherapy resistance of GC cells.CircVAPA and miR-125b-5p may be considered as the potential targets for GC therapy. | Peng Deng Ming Sun Wen-Yan Zhao Bin Hou Kai Li Tao Zhang Feng Gu | 2021 | World Journal of Gastroenterology2021，27，6： | 11 |
| 17 | Arabidopsis co-chaperonin CPN20 antagonizes Mg-chelatase H subunit to derepress ABA-responsive WRKY40 transcription repressor显示文摘Our previous study demonstrated that a chloroplast co-chaperonin 20(CPN20),one of the interaction partners of the magnesium-protoporphyrin IX chelatase H subunit(CHLH/ABAR),negatively regulates ABA signaling at the same node with ABAR but upstream of WRKY40 transcription repressor in Arabidopsis thaliana.In the present experiment,we showed that ABA directly inhibits the ABAR-CPN20 interaction,and also represses expression of CPN20,which depends on ABAR.CPN20 inhibits ABAR-WRKY40 interaction by competitively binding to ABAR.ABAR downregulates,but CPN20 upregulates,WRKY40 expression.The cpn20-1 mutation induces downregulation of WRKY40,and suppresses the upregulated level of WRKY40 due to the cch mutation in the ABAR gene.ABA-induced repressive effect of the WRKY40 gene is strengthened by downregulation of CPN20 but reduced by upregulation of CPN20.Together with our previously reported genetic data,we provide evidence that CPN20 functions through antagonizing the ABAR-WRKY40 coupled pathway,and ABA relieves this pathway of repression by inhibiting the ABAR-CPN20 interaction to activate ABAR-WRKY40 interaction. | ZHANG XiaoFeng JIANG Tao YU YongTao WU Zhen JIANG ShangChuan LU Kai FENG XiuJing LIANG Shan LU YanFen WANG XiaoFang ZHANG DaPeng | 2014 | Science China(Life Sciences)2014，57，1： | 11 |
| 18 | Characteristics of the HIV/AIDS Epidemic in Women Aged 15-49 Years from 2005 to 2012 in China显示文摘Objective To describe the characteristics of the HIV/AIDS epidemic in women aged 15-49 years in China. Methods HIV/AIDS cases from 2005 to 2012 that fulfilled the inclusion and exclusion criteria were identified on the Chinese HIV/AIDS case reporting system. Descriptive and spatial analyses were performed. Results A total of 103,559 female HIV/AIDS cases were included in our study. Based on the descriptive analysis, between 2005 and 2012, the proportion of heterosexually acquired HIV infection among women(15-49 years) increased rapidly from 35.8% to 87.4%. Approximately 60% of these cases were infected through non-marital heterosexual contact. Among older women(40-49 years), a slightly increasing trend was identified. The spatial analysis detected ‘hot spots' in the Xinjiang, Yunnan, Sichuan, Guangxi, and Chongqing provinces. The epidemic trends in these areas were predominately driven by heterosexual transmission. Conclusion Non-marital heterosexual contact is a very important factor in the HIV/AIDS epidemic in women aged 15-49 years, and the HIV infection rate in older women is increasing. Several epidemic hot spots were detected in northwestern and southwestern China. Efficient interventions are needed to control the spread of HIV/AIDS among women living in these areas. | ZHANG Xia Yan HUANG Tao FENG Yi Bing LI Meng CHEN Fang Fang LI Yin Ge JIN Shan Shan BU Kai WANG Lu | 2015 | Biomedical and Environmental Sciences2015，28，10： | 10 |
| 19 | Leaf nutrient dynamics and nutrient resorption:a comparison between larch plantations and adjacent secondary forests in Northeast China显示文摘Aims Conversion of secondary forests to pure larch plantations is a common management practice driven by the increasing demand for timber production in Northeast China,resulting in a reduction in soil nutrient availability after a certain number of years following conversion.Nutrient resorption prior to leaf senescence was related to soil fertility,an important nutrient conservation strategy for plants,being especially significant in nutrient-poor habitats.However,the seasonal dynamics of leaf nutrients and nutrient resorption in response to secondary forest conversion to larch plantations is not well understood.Methods A comparative experiment between larch plantations(Larix spp.)and adjacent secondary forests(dominant tree species including Quercus mongolica,Acer mono,Juglans mandshurica and Fraxinus rhynchophylla)was conducted.We examined the variations in leaf nutrient(macronutrients:N,P,K,Ca and Mg;micronutrients:Cu and Zn)concentrations of these tree species during the growing season from May to October in 2013.Nutrient resorption efficiency and proficiency were compared between Larix spp.and the broadleaved species in the secondary forests.Important Findings Results show that the seasonal variation of nutrient concentrations in leaves generally exhibited two trends,one was a downward trend for N,P,K,Cu and Zn,and another was an upward trend for Ca and Mg.The variations in foliar nutrient concentrations were mainly controlled by the developmental stage of leaves rather than by tree species.Resorption of the observed seven elements varied among the five tree species during leaf senescence.Nutrient resorption efficiency varied 6–75%of N,P,K,Mg,Cu and Zn,while Ca was not retranslocated in the senescing leaves of all species,and Mg was not retranslocated in Larix spp.Generally,Larix spp.tended to be more efficient and proficient(higher than 6–30%and 2–271%of nutrient resorption efficiency and resorption proficiency,respectively)in resorbing nutrients than the broadleaved species in the secondary forests,indicating that larch plantations had higher leaf nutrient resorption and thus nutrient use efficiency.Compared with Larix spp.,more nutrients would remain in the leaf litter of the secondary forests,indicating an advantage of secondary forests in sustaining soil fertility.In contrast,the larch plantation would reuse internal nutrients rather than lose nutrients with litter fall and thus produce a positive feedback to soil nutrient availability.In summary,our results suggest that conversion from secondary forests to pure larch plantations would alter nutrient cycling through a plantmediated pathway. | Tao Yan Xiaotao Lü Kai Yang Jiaojun Zhu | 2016 | Journal of Plant Ecology2016，9，2： | 10 |
| 20 | Synthesis of a benzoxazine monomer containing maleimide and allyloxy groups显示文摘新奇 benzoxazine 单体 3-(4-allyloxy )phenyl-3,4-dihydro-2H-6-(N-maleimido )-1,3-benzoxazine (AMB ) 被综合,结构被英尺红外证实,(1 ) H NMR。AMB 的热分析(DSC ) 证明烯丙氧基组的介绍减少了熔点并且展出了一扇狭窄、对称的治好的发热的窗户。 | Yan Tang Qing Lai Zhao Ke Zeng Pei Kai Miao Ke Zhou Wen Rui Tang Hong Fei Zhou Tao Liu Yi Peng Wang Gang Yang | 2007 | Chinese Chemical Letters2007，18，8： | 10 |
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