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| 1 | Sensitivity studies of a high accuracy surface modeling method显示文摘The sensitivities of the initial value and the sampling information to the accuracy of a high accuracy surface modeling(HASM) are investigated and the implementations of this new modeling method are modified and enhanced. Based on the fundamental theorem of surface theory, HASM is developed to correct the error produced in geographical information system and ecological modeling process. However, the earlier version of HASM is theoretically incomplete and its initial value must be produced by other surface modeling methods, such as spline, which limit its promotion. In other words, we must use other interpolators to drive HASM. According to the fundamental theorem of surface theory, we modify HASM, namely HASM.MOD, by adding another important nonlinear equation to make it independent of other methods and, at the same time, have a complete and solid theory foundation. Two mathematic surfaces and monthly mean temperature of 1951–2010 are used to validate the effectiveness of the new method. Experiments show that the modified version of HASM is insensitive to the selection of initial value which is particular important for HASM. We analyze the sensitivities of sampling error and sampling ratio to the simulation accuracy of HASM.MOD. It is found that sampling information plays an important role in the simulation accuracy of HASM.MOD. Another feature of the modified version of HASM is that it is theoretically perfect as it considers the third equation of the surface theory which reflects the local warping of the surface. The modified HASM may be useful with a wide range of spatial interpolation as it would no longer rely on other interpolation methods. | ZHAO Na YUE TianXiang ZHAO MingWei DU ZhengPing FAN ZeMeng CHEN ChuanFa | 2014 | Science China Earth Sciences2014，57，10： | 9 |
| 2 | A fundamental theorem for eco-environmental surface modelling and its applications显示文摘We propose a fundamental theorem for eco-environmental surface modelling(FTEEM) in order to apply it into the fields of ecology and environmental science more easily after the fundamental theorem for Earth’s surface system modeling(FTESM). The Beijing-Tianjin-Hebei(BTH) region is taken as a case area to conduct empirical studies of algorithms for spatial upscaling, spatial downscaling, spatial interpolation, data fusion and model-data assimilation, which are based on high accuracy surface modelling(HASM), corresponding with corollaries of FTEEM. The case studies demonstrate how eco-environmental surface modelling is substantially improved when both extrinsic and intrinsic information are used along with an appropriate method of HASM. Compared with classic algorithms, the HASM-based algorithm for spatial upscaling reduced the root-meansquare error of the BTH elevation surface by 9 m. The HASM-based algorithm for spatial downscaling reduced the relative error of future scenarios of annual mean temperature by 16%. The HASM-based algorithm for spatial interpolation reduced the relative error of change trend of annual mean precipitation by 0.2%. The HASM-based algorithm for data fusion reduced the relative error of change trend of annual mean temperature by 70%. The HASM-based algorithm for model-data assimilation reduced the relative error of carbon stocks by 40%. We propose five theoretical challenges and three application problems of HASM that need to be addressed to improve FTEEM. | Tianxiang YUE Na ZHAO Yu LIU Yifu WANG Bin ZHANG Zhengping DU Zemeng FAN Wenjiao SHI Chuanfa CHEN Mingwei ZHAO Dunjiang SONG Shihai WANG Yinjun SONG Changqing YAN Qiquan LI Xiaofang SUN Lili ZHANG Yongzhong TIAN Wei WANG Ying’an WANG Shengnan MA Hongsheng HUANG Yimin LU Qing WANG Chenliang WANG Yuzhu WANG Ming LU Wei ZHOU Yi LIU Xiaozhe YIN Zong WANG Zhengyi BAO Miaomiao ZHAO Yapeng ZHAO Yimeng JIAO Ufra NASEER Bin FAN Saibo LI Yang YANG John PWILSON | 2020 | Science China Earth Sciences2020，63，8： | 7 |
| 3 | China's flourishing synthetic organofluorine chemistry:innovations in the new millennium显示文摘The new millennium has witnessed the rapid development of synthetic organofluorine chemistry all over the world, and chemists in China have made significant contributions in this field. This review aims to provide a brief introduction to China's primary innovations from 2000 to early 2017, covering fluorination,fluoroalkylation, fluoromethylthiolation, fluoroolefination and polyfluoroarylation, as well as synthesis with fluorinated building blocks. Recent advances in the chemistry of difluorocarbene and the chemistry of carbon–fluorine bond activation are also discussed. As a conclusion, the review ends with some personal perspectives on the future development of China's synthetic organofluorine chemistry. | Qinghe Liu Chuanfa Ni Jinbo Hu | 2017 | National Science Review2017，4，3： | 3 |
| 4 | Trimming of N-Glycans by the Golgi-Localized α-1,2-Mannosidases, MNS1 and MNS2, Is Crucial for Maintaining RSW2 Protein Abundance during Salt Stress in Arabidopsis显示文摘天门冬素(Asn/N ) 连接了 glycans 为蛋白质合拢, trafficking,和 endoplasmic 是重要的在优核质的联系蜂窝胃的降级。glycoproteins 的成熟包含在 Golgi 由另外的糖分子的 mannosidases 和三分支的 N-glycans 的增加整修 mannosyl 残余。然而,调停 Golgi 的甘露糖整修的生物重要性充分没被理解。这里,我们显示出二机能上地冗余的 mannosidases, MNS1 和 MNS2 的那废除,为在 A 和工厂 N-glycans 的 C 分支上整修的 -1,2-mannose 负责在 Arabidopsis 在盐压力条件下面导致严重的根生长抑制。相反,有在 oligosaccharide 先锋的生合成的缺点的异种当甘露糖整修不在时显示了提高的盐忍耐。然而,在 EBS3 的变化,为分叉的 N-glycan 先锋的形成被要求,压制了 mns1 mns2 的盐敏感的显型两倍异种。有趣地,我们观察了那 ? 纤维素生合成在高咸度下面在 mns1 mns2 根被损害。一致地, ? 许多膜抛锚了 endo -- 在纤维素生合成起一个关键作用的 1,4-endoglucanase (RSW2/KOR ) 和它的变异的变体 rsw2-1 ? 被调制由 ? 在盐应力下面整修的 -1,2-mannose。RSW2 的 Overexpression 能部分救 mns1 mns2 的盐敏感的显型。一起拿,这些结果建议 N-glycans 整修的那 MNS1/2-mediated 甘露糖在 modulating glycoprotein 丰富是关键的在植物承受盐应力。 | Chuanfa Liu Guanting Niu Huchen Zhang Yafei Sun Shubin Sun Fugen Yu Shan Lu Yonghua Yang Jianming Li Zhi Hong | 2018 | Molecular Plant2018，11，5： | 3 |
| 5 | Fluoro-Hydroxylation of gem-Difluoroalkenes:Synthesis of 18O-labeled α-CF3 Alcohols显示文摘in this paper,a fluoro-hydroxylation of gem-difluoroalkenes is demonstrated.This protocol uses sequential electrophilic fluorination with Selectfluor and nucleophilic hydroxylation with H218o,which can be used to prepare 18Oo-labeled α-CF3 alcohols from gem-difluorostyrenes.The reaction is typically carried out at room temperature within 4h in good to excellent yields.Other nucleophiles (besides H218o),such as alcohols,carboxylic acid, acetonitrile and N,N-dimethylformamide,are also suitable for this difunctionalization of gem-difluoroalkenes. | Jingyu Hu Yide Yang Zhengzhao Lou Chuanfa Ni Jinbo Hu | 2018 | Chinese Journal of Chemistry2018，36，12： | 3 |
| 6 | Copper-Mediated Di- and Monofluoromethanesulfonylation of Arenediazonium Tetrafluoroborates: Probing the Fluorine Effect显示文摘 | Bo Xing Chuanfa Ni Jinbo Hu | 2018 | Chinese Journal of Chemistry2018，36，3： | 2 |
| 7 | An improved HASM method for dealing with large spatial data sets显示文摘Surface modeling with very large data sets is challenging. An efficient method for modeling massive data sets using the high accuracy surface modeling method(HASM) is proposed, and HASM_Big is developed to handle very large data sets. A large data set is defined here as a large spatial domain with high resolution leading to a linear equation with matrix dimensions of hundreds of thousands. An augmented system approach is employed to solve the equality-constrained least squares problem(LSE) produced in HASM_Big, and a block row action method is applied to solve the corresponding very large matrix equations.A matrix partitioning method is used to avoid information redundancy among each block and thereby accelerate the model.Experiments including numerical tests and real-world applications are used to compare the performances of HASM_Big with its previous version, HASM. Results show that the memory storage and computing speed of HASM_Big are better than those of HASM. It is found that the computational cost of HASM_Big is linearly scalable, even with massive data sets. In conclusion,HASM_Big provides a powerful tool for surface modeling, especially when there are millions or more computing grid cells. | Na ZHAO Tianxiang YUE Chuanfa CHEN Miaomiao ZHAO Zhengping DU | 2018 | Science China Earth Sciences2018，61，8： | 2 |
| 8 | An Algorithm for Solving High Accuracy Surface Mod- eling显示文摘 | Chen Chuanfa Yue Tianxiang Zhang Zhaojie | | Geomatics and Wuhan University 9 0100，35，3： | 1 |
| 9 | A thin plate spline based feature preserving method for reducing elevat ion points derived from lidar显示文摘 | CHEN CHUANFA LI YANYANoYAN CHANGQING | 2015 | Remote Sensing2015，，： | 1 |
| 10 | Pentafluoroethylbenziodoxole (BIX-C2Fs): A Shelf-Stable Reagent for Pentafluoroethylation of β-Ketoesters and Arylboronic Acids显示文摘 | Jiansheng Zhu Yuguang Li Chuanfa Ni Qilong Shen | 2016 | Chinese Journal of Chemistry2016，34，7： | 1 |
| 11 | Pooled analysis of the CYP1A1 exon 7 polymorphism and lung cancer (United States)显示文摘 | Lo?c Le Marchand Chuanfa Guo Simone Benhamou Christine Bouchardy Ingolf Cascorbi Margie L. Clapper Seymour Garte Aage Haugen Magnus Ingelman-Sundberg Masahiro Kihara Agneta Rannug David Ryberg Isabelle Stücker Haruhiko Sugimura Emanuela Taioli | 2003 | Cancer Causes and Control2003，，4： | 1 |
| 12 | A method of DEM construction and related error analysis 显示文摘 | Chen Chuanfa Yue Tianxiang | 2010 | COMPUTERS & GEOSCIENCES2010，36，6： | 1 |
| 13 | A Multiresolution Hierarchical Classification Algorithm for Filtering Airborne Li DAR Data显示文摘 | CHEN CHUANFA LI YANYAN | 2013 | ISPRS Journal of Photogrammetry and Remote Sensing2013，82，： | 1 |
| 14 | Risk Factors for Primary Hepatocellular Carcinoma in Black and White Americans in 2000显示文摘 | Lei Yu Dana A. Sloane Chuanfa Guo Charles D. Howell | 2006 | Clinical Gastroenterology and Hepatology2006，，3： | 1 |
| 15 | A method of DEM construction and related error analysis显示文摘 | Chuanfa Chen Tianxiang Yue | 2010 | Computers and Geosciences2010，，6： | 1 |
| 16 | Unusual Single Electron Transfer Reactions between Alkenes and Iodine Electrophiles显示文摘The electrophilic addition to an alkene with an electrophile has been widely studied and applied in organic synthesis.The organic chemistry textbook describes the classical reaction between an alkene and an iodine electrophile(such as elemental iodine and N-iodosuccinimide(NIS))as a typical ionic reaction,in which an iodonium ion is formed and then attacked by a nucleophile.However,in this article,we report a new and unusual reaction mode between an alkene and NIS;that is,a single electron transfer(SET)process occurs between these two reactants by forming an electron-donor acceptor complex.Not only does this unusual single electron transfer reaction between an alkene and NIS add fundamentally important knowledge to organic chemistry,it also provides a valuable synthetic method as the new SET reaction mode with opposite regioselectivity as compared with the traditional ionic mode. | Zhengzhao Lou Jingyu Hu Chuanfa Ni Xiu Wang Jinbo Hu | 2024 | Chinese Journal of Chemistry2024，42，5： | 0 |
| 17 | Pentafluoroethylation of Arenediazonium Tetrafluoroborates Using On-Site Generated Tetrafluoroethylene显示文摘Background and Originality Content Scheme I Aromatic pentafluoroethylation using TFE and CsF Perfluoroalkylated compounds are of great interest in pharmaceutical,agrochemical and material research and industry.[1]In this context,numerous efforts have been devoted to developing novel methods for the introduction of trifluoromethyl group(CF3)into organic aromatic compounds.[2]However,the similar pentafluoroethylation processes are still underexploited.[3] Currently available aromatic pentafluoroethylation methods mainly rely on transition-metal-mediated cross-coupling of aryl halides131 or aryl-boron compounds,141 and C-H functionalization of arenes. | Bo Xing Lingchun Li Chuanfa Ni Jinbo Hu | 2019 | Chinese Journal of Chemistry2019，37，11： | 0 |
| 18 | Seasonal variations in the composition and functional profiles of gut microbiota reflect dietary changes in plateau pikas显示文摘Seasonal variations in gut microbiota of small mammals and how they are influenced by environmental variables are relatively poorly understood.We sampled 162 wild plateau pikas(Ochotona curzoniae)in 4 seasons over 2 and a half years and recorded the air temperature,precipitation,and nutrient content in edible vegetation at the sampling site.After conducting 16S rRNA and shotgun metagenomic sequencing,we found that the highest alpha diversity,the relative abundance of Firmicutes,and the simplest co-occurrence network occurred in winter,whereas the highest relative abundance of Proteobacteria and the most complex network structure were observed in spring.The highest relative abundance of Verrucomicrobiota and Spirochaetota was seen in summer and autumn,respectively.Air temperature,precipitation,and the contents of crude protein,crude fiber,and polysaccharide in vegetation had significant effects on the seasonal changes in gut microbiota.Diet contributed more to microbial variation than climatic factors.Metagenomic analysis revealed that the amino acid metabolism pathway and axillary activity enzymes were most abundant in summer,while abundance of carbohydrate-binding modules and carbohydrate esterases was highest in spring.These microbial variations were related to the changes in dietary nutrition,indicating that gut microbiota of plateau pika contribute to the efficient use of food resources.This study provides new evidence of how external environmental factors affect the intestinal environment of small mammals. | Chao FAN Liangzhi ZHANG Shangang JIA Xianjiang TANG Haibo FU Wenjing LI Chuanfa LIU He ZHANG Qi CHENG Yanming ZHANG | 2022 | Integrative Zoology2022，17，3： | 0 |
| 19 | Nucleophilic Difluoro(phenylsulfonimidoyl)methylation of Unactivated Alkyl Bromides with PhSO(NTBS)CF_(2)H: Facile Entry into gem-Difluoroalkenes显示文摘An efficient nucleophilic difluoro(phenylsulfonimidoyl)methylation of unactivated primary alkyl bromides with PhSO(NTBS)CF_(2)H has been developed.It is particularly remarkable that,when 1.5 equiv.of alkyl bromides are used,the substitution products are obtained in moderate to excellent yields.The prepared difluoro(phenylsulfonimidoyl)methylated alkanes can be readily transformed to gem-difluoroalkenes via base-mediatedβ-elimination reaction. | Xiao Shen Qinghe Liu Chuanfa Ni Jinbo Hu | 2014 | Chinese Journal of Chemistry2014，32，8： | 0 |
| 20 | Oxygen-vacancy-containing cerium oxide nanoparticle-decorated nanonetwork-structured carbon toward high-performance lithium–sulfur batteries显示文摘Lithium-sulfur(Li-S)batteries have been regarded as promising next-generation energy-storage devices owing to their inherently high theoretical energy density.Unfortunately,the poor capacity and cycling life caused by severe polysulfide shuttle effect and sluggish redox kinetics in sulfur cathodes greatly impede the practical application of Li-S batteries.Herein,a new class of nanonetworkstructured carbon decorated with oxygen-vacancy-containing cerium oxide nanoparticles(NSC-CeO_(2−x)),in which carbon skeleton is composed of highly conductive carbon nanotube core welded by hybrid carbon shell,has been developed via one-step heating treatment of hybrid molecular brush and further employed as functional interlayer to modify separator of Li-S battery.Owing to the synergistic effect of the highly active CeO_(2−x)nanoparticles and the threedimensional carbon nanonetwork in enhancing the preservation of the soluble polysulfides and boosting the redox kinetics of sulfur species,the NSC-CeO_(2−x)significantly promotes the electrochemical performance of sulfur cathode.As a result,the as-constructed Li-S batteries exhibit an ultrahigh initial sulfur utilization of 92.9%and an extremely large capacity of 751mA h g^(−1) at a high rate of 5 C.Remarkably,a stable capacity of 728 mA h g^(−1)over 300 cycles at 1 C is also achieved. | Chuanfa Li Pengwei Ma Shenghao Lin Zongheng Cen Junlong Huang Yin Cui Shimei Li Shaohong Liu Ruowen Fu Dingcai Wu | 2023 | SusMat2023，3，1： | 0 |
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