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| 1 | A survey of remote sensing-based aboveground biomass estimation methods in forest ecosystems显示文摘Remote sensing-based methods of aboveground biomass(AGB)estimation in forest ecosystems have gained increased attention,and substantial research has been conducted in the past three decades.This paper provides a survey of current biomass estimation methods using remote sensing data and discusses four critical issues–collection of field-based biomass reference data,extraction and selection of suitable variables from remote sensing data,identification of proper algorithms to develop biomass estimation models,and uncertainty analysis to refine the estimation procedure.Additionally,we discuss the impacts of scales on biomass estimation performance and describe a general biomass estimation procedure.Although optical sensor and radar data have been primary sources for AGB estimation,data saturation is an important factor resulting in estimation uncertainty.LIght Detection and Ranging(lidar)can remove data saturation,but limited availability of lidar data prevents its extensive application.This literature survey has indicated the limitations of using single-sensor data for biomass estimation and the importance of integrating multi-sensor/scale remote sensing data to produce accurate estimates over large areas.More research is needed to extract a vertical vegetation structure(e.g.canopy height)from interferometry synthetic aperture radar(InSAR)or optical stereo images to incorporate it into horizontal structures(e.g.canopy cover)in biomass estimation modeling. | Dengsheng Lu Qi Chen Guangxing Wang Lijuan Liu Guiying Li Emilio Moran | 2016 | International Journal of Digital Earth2016,9,1: | 17 |
| 2 | In vivo theranostics with near-infraredemitting carbon dots—highly efficient photothermal therapy based on passive targeting after intravenous administration显示文摘Carbon dots that exhibit near-infrared fluorescence(NIR CDs)are considered emerging nanomaterials for advanced biomedical applications with low toxicity and superior photostability and targeting compared to currently used photoluminescence agents.Despite progress in the synthesis of NIR CDs,there remains a key obstacle to using them as an in vivo theranostic agent.This work demonstrates that the newly developed sulfur and nitrogen codoped NIR CDs are highly efficient in photothermal therapy(PTT)in mouse models(conversion efficiency of 59%)and can be readily visualized by photoluminescence and photoacoustic imaging.The real theranostic potential of NIR CDs is enhanced by their unique biodistribution and targeting.Contrary to all other nanomaterials that have been tested in biomedicine,they are excreted through the body’s renal filtration system.Moreover,after intravenous injection,NIR CDs are accumulated in tumor tissue via passive targeting,without any active species such as antibodies.Due to their accumulation in tumor tissue without the need for intratumor injection,high photothermal conversion,excellent optical and photoacoustic imaging performance,and renal excretion,the developed CDs are suitable for transfer to clinical biomedical practice. | Xin Bao Ye Yuan Jingqin Chen Bohan Zhang Di Li Ding Zhou Pengtao Jing Guiying Xu Yingli Wang Kateřina Holá Dezhen Shen Changfeng Wu Liang Song Chengbo Liu Radek Zbořil Songnan Qu | 2018 | Light(Science & Applications)2018,7,1: | 13 |
| 3 | Adhesion at cerium doped metal-ceramic α-Fe/WC interface:A first-principles calculation显示文摘Electronic structure, stability and bonding strength of a-Fe/WC interfaces between Ce-doped and undoped WC cermet coating were investigated by first-principles methodology based on densityfunctional theory(DFT). Based on the minimum mismatched lattices, the relatively stable interface that forms between WC(100) and bcc a-Fe(100) was employed to predict the atomic structure, bonding,and ideal work of adhesion. There are three possible positions which were defined as OT, MT, HCP, taking into account both C-and W-terminations. The sequence of structural stability tested in this paper was:MT > OT > HCP. After full relaxation, the results show that only the first and second layers of the interface have significant influence on the electronic structure between Fe and WC. The interaction of Ce elements at the interface is achieved by comparing the interface structure and electronic structure of the doped and undoped interfaces. Ce doped interface possesses a shorter interface distance(d0 = 0.09776 nm)and a larger interface energy(Wad = 8.98 J/m2) than undoped interface(Wad = 8.76 J/m2,d0= 0.10134 nm).Charge density distribution and difference, and density of states were utilized to characterize the electronic properties and determine the interfacial bonding.The results demonstrate that strong covalent bonding existed in the undoped interface, while a mixed covalent/ionic bonding was formed at the Ce-doped interface. | Guiying Yang Yan Liu Zongqiu Hang Naiyuan Xi Hao Fu Hui Chen | 2019 | Journal of Rare Earths2019,37,7: | 10 |
| 4 | microRNA-29b is a novel mediator of Sox2 function in the regulation of somatic cell reprogramming显示文摘成纤维细胞能由 Yamanaka 因素(OSKM ) 的申请是进导致的 pluripotent 干细胞(iPSCs ) 的 reprogrammed,但是位于这 reprogramming 下面的机制仍然保持糟糕理解。这里,我们报导 Sox2 直接调整内长的 microRNA-29b (miR-29b ) 表示为调停 OSKM 、调停 OSK 的 reprogramming 在 iPSC 产生和那 miR-29b 表情期间被要求。Dnmt3a 和 Dnmt3b 在 miR-29b 和那 Dnmt3a 和 Dnmt3b 表示的 vivo 目标的机械学的研究表演相反地在 reprogramming 期间与 miR-29b 表示被相关。而且, reprogramming 上的 miR-29b 的效果能被 Dnmt3a 或 Dnmt3b overexpression 堵住。进一步的实验显示发信号的 miR-29b-DNMT 显著地涉及 DNA methylation 相关的 reprogramming 事件的规定,例如 mesenchymal-to-epithelial 转变(相遇) 并且 Dlk1-Dio3 区域抄写。因此,我们的研究不仅表明 miR-29b 是 reprogramming 因素 Sox2 的一个新奇调停人而且为 Sox2 在驾驶表明调整 DNA 的轴的 miR-29b-DNMT 的 multistep 机制提供证据 methylation 相关的事件在 reprogramming 期间。 | Xudong Guo Qidong Liu Guiying Wang Songcheng Zhu Longfei Gao Wujun Hong Yafang Chen Minjuan Wu Houqi Liu Cizhong Jiang Jiuhong Kang | 2013 | Cell Research2013,23,1: | 9 |
| 5 | Longitudinal study of a community hospital integrated model for diabetes management in the Beijing Jingsong community显示文摘Objective:To determine the effects of a community hospital integrated model on the longitu-dinal management of diabetic patients.Methods:Four hundred forty-one patients with type 2 diabetes residing in Jingsong Commu-nity were randomly assigned to intensive and standard groups.Metabolic parameters were meas-ured in the two groups at baseline and after 36 months of management to compare the rate of goal achievement.Results:After comprehensive management,the overall control rate in the intensive group was increased from 2.7%to 9.6%compared with 2.3%-4.5%in the standard group.Specifically,the control rates for fasting plasma glucose,glycosylated hemoglobin,and blood pressure in the intensive group were significantly increased from 54.1%,40.0%,and 68.2%to 85.5%,74.6%,and 89.1%,respectively.The control rate for glycosylated hemoglobin in the intensive group was significantly higher than the standard group after 36 months of treatment.Conclusion:The community hospital integrated model for longitudinal management effec-tively improved the control rate of glycosylated hemoglobin and the overall control rate in patients with type 2 diabetes. | Jiandong Zhang Ning Zhuang Mingxia Yuan Lijuan Gao Chuan Bian Huaining Chen Qing Chi Suqing Hui Guiying Li Yanli Su Hongsong Bao Gang Wan Guangran Yang Shenyuan Yuan | 2014 | Family Medicine and Community Health2014,2,1: | 7 |
| 6 | The vertical heat transport of internal solitary waves over the continental slope in the northern South China Sea显示文摘An integrated analysis of internal solitary wave(ISW) observations obtained from two moorings over the continental slope in the northern South China Sea(SCS) leads to an assessment of the vertical heat transport of the ISWs. The clusters of ISW packets are phase-locked to the fortnightly cycle of the semidiurnal tide. The ISWs appear during large semidiurnal tides, and there is a period of 5–6 d when no ISWs are observed. The effect of the ISWs on the continental slope heat budget is observed. The ISWs can modify a local temperature field in which the temperature in the upper layer can be changed by O(100) °C after the ISWs passed the mooring. Both ISWinduced diffusion and ISW-induced advection contribute to the temperature variation. The estimates imply an average vertical heat flux of 0.01 to 0.1 MW/m^2 in the ISWs in the upper 500 m of the water column. The vertical heat transport ranges from 0.56 to 2.83 GJ/m^2 with a mean value of 1.63 GJ/m^2. The observations suggest that the vertical heat transport is proportional to the maximum vertical displacement. | Changrong Liang Xiaodong Shang Guiying Chen | 2019 | Acta Oceanologica Sinica2019,38,3: | 4 |
| 7 | Introduction of pokeweed antiviral protein cDNA into Brassica napus and acquisition of transgenic plants resistant to viruses显示文摘Using cotyledonary petioles as explants, the PAP cDNA controlled by wound-in-ducible promoter has been introduced into Brassica napus by coculture with Agrobacterium tumefaciens and laser microbeam puncture respectively. Regenerated plants resistant to gen-tamycin have been selected out. PCR amplification and Southern blotting analysis indicated that PAP cDNA together with wound-inducible promoter had been integrated into Brassica genome with transformation frequencies of 2.0% and 1.7% for two transformation methods respectively. The test of virus challenge showed that these transgenic Brassica plants were resistant in different degrees to mechanically inoculated TuMV. | ZHANG Haiyan , TIAN Yingchuan , ZHOU Yihua , DANG Benyuan LAN Haiyan , SONG Guiying , WANG Lanlan , LIU Guizhen , ZHANG Lihua and CHEN ZhenghuaInstitute of Genetics , Chinese Academy of Sciences , Beijing 100101, China Institute of Microbiology , Chinese Academy of Sciences , Beijing 100080, China | 1999 | Chinese Science Bulletin1999,44,8: | 3 |
| 8 | Modal structure and propagation of internal tides in the northeastern South China Sea显示文摘The evolution of energy, energy flux and modal structure of the internal tides (ITs) in the northeastern South China Sea is examined using the measurements at two moorings along a cross-slope section from the deep continental slope to the shallow continental shelf. The energy of both diurnal and semidiurnal ITs clearly shows a ~14-day spring-neap cycle, but their phases lag that of barotropic tides, indicating that ITs are not generated on the continental slope. Observations of internal tidal energy flux suggest that they may be generated at the Luzon Strait and propagate west-northwest to the continental slope in the northwestern SCS. Because the continental slope is critical-supercritical with respect to diurnal ITs, about 4.6 kJ/m^2 of the incident energy and 8.7 kW/m of energy flux of diurnal ITs are reduced from the continental slope to the continental shelf. In contrast, the semidiurnal internal tides enter the shelf because of the sub-critical topography with respect to semidiurnal ITs. From the continental slope to the shelf, the vertical structure of diurnal ITs shows significant variation, with dominant Mode 1 on the deep slope and dominant higher modes on the shelf. On the contrary, the vertical structure of the semidiurnal ITs is stable, with dominant Mode 1. | Qian Liu Xiaohui Xie Xiaodong Shang Guiying Chen Hong Wang | 2019 | Acta Oceanologica Sinica2019,38,9: | 3 |
| 9 | Observations of upper layer turbulent mixing in the southern South China Sea显示文摘A turbulent microstructure experiment was undertaken at a low latitude of 10°N in the South China Sea in late August 2012. The characteristics of the eddy diffusivity above 650 m were analyzed, which is one order of magnitude larger than that in the open ocean at that low latitude. Enhanced eddy diffusivities by strong shears and sharp changes in topography were observed. The strongest eddy diffusivity occurred in the mixed layer, and it reached O(10–2 m2/s). Strong stratification in the thermocline inhibited the penetration of surface eddy diffusivities through the thermocline, where the mixing was weakest. Below the thermocline, where the background eddy diffusivity was approximately O(10–6 m2/s), the eddy diffusivity increased with depth, and its largest value was O(10–3 m2/s). | SHANG Xiaodong QI Yongfeng CHEN Guiying LIANG Changrong | 2015 | Acta Oceanologica Sinica2015,34,11: | 3 |
| 10 | Furongian(upper Cambrian) Guole Konservat-Lagersttte from South China显示文摘The Guole biota contains common shelly fossils and some exceptionally well-preserved softbodied fossils.Stratigraphically,it is located in the mudstones and siltstones of the Sandu Formation near Guole Town,Jingxi County,Guangxi,South China.It is the first Furongian(late Cambrian)Burgess Shale-type biota found in the world,thereby filling the gap between middle Cambrian and Lower Ordovician Burgess Shale-type Lagerstatten.Preliminary studies suggest that the Guole biota includes approximately seven metazoan groups as well as algae.These will provide important new evolutionary and ecological information. | ZHU Xuejian PENG Shanchi Samuel ZAMORA Bertrand LEFEBVRE CHEN Guiying | 2016 | Acta Geologica Sinica(English Edition)2016,90,1: | 3 |
| 11 | Displacement quantity test and measurement system with the laser light triangle method 显示文摘 | Li Guiying Chen Dianren Du Zhenlin | 1998 | Proc SPIE1998,,: | 1 |
| 12 | Effect of high pressure sintering and annealing on microstructure and thermoelectric properties of nanocrystalline Bi_2Te_(2.7)Se_(0.3) doped with Gd显示文摘Bi2Te2.7Se0.3of high performance doped with Gd bulk materials was prepared by a high pressure(6.0 GPa) sintering(HPS) method at 593 K,633 K, 673 K and 693 K. The sample was then annealed for 36 h in a vacuum at 633 K. The phase composition, crystal structure and morphology of the sample were analyzed by X-ray diffraction and scanning electron microscopy. The electric conductivity, Seebeck coefficient, and thermal conductivity aspects of the sample were measured from 298 K to 473 K. The results show that high pressure sintering and the doping with Gd has a great effect on the crystal structure and the thermoelectric properties of the samples. The samples are consisted of nanoparticles before and after annealing, and these nanostructures have good stability at high temperature. HPS together with annealing can improve the TE properties of the sample by decreasing the thermal conductivity of the sample with nanostructures. The maximum ZT value of 0.74 was obtained at 423 K for the sample, which was sintered at 673 K and then annealed at 633 K for 36 h. Compared with the zone melting sample, it was increased by 85% at423 K. Hence the temperature of the maximum of figure of merit was increased. The results can be applied to the field of thermoelectric power generation materials. | Ping Zou Guiying Xu Song Wang Penglei Chen Fengzhu Huang | 2014 | Progress in Natural Science:Materials International2014,24,3: | 1 |
| 13 | Preparation and characterization of hydrophobic TiO 2 pillared clay: The effect of acid hydrolysis catalyst and doped Pt amount on photocatalytic activity显示文摘 | Xuejun Ding Taicheng An Guiying Li Shanqing Zhang Jiaxin Chen Jianmei Yuan Huijun Zhao Hui Chen Guoying Sheng Jiamo Fu | 2008 | Journal of Colloid And Interface Science2008,,: | 1 |
| 14 | Study on microstructure and mechanical properties of welding Coarse grain heat-affected zone of high-Nb X80 steels 显示文摘 | Chen Xiaowei Qiao Guiying Wang xu | 2012 | Advanced Science Letters2012,,13: | 1 |
| 15 | Identification of aberrantly expressed miRNAs in rectal cancer显示文摘 | Xinhua Li Guiying Zhang Feijun Luo Jinde Ruan Damao Huang Deyun Feng Desheng Xiao Zhijun Zeng Xiong Chen Wei Wu | 2012 | Oncology Reports2012,,: | 1 |
| 16 | Effect of Mo, Cr and Nb on microstructure and mechanical properties of heat affected zone for Nb-bearing X80 pipeline steels显示文摘 | Chen Xiaowei Qiao Guiying Han Xiulin | 2014 | Materials and Design2014,,53: | 1 |
| 17 | Identification of stromal differentially expressed proteins in the colon carcinoma by quantitative proteomics显示文摘 | Yibing Mu Yongheng Chen Guiying Zhang Xianquan Zhan Yuanyuan Li Ting Liu Guoqing Li Maoyu Li Zhefeng Xiao Xiaoxiang Gong Zhuchu Chen | 2013 | ELECTROPHORESIS2013,,11: | 1 |
| 18 | Synthesis and characterization of TiO2 nanotube photoanode and its application in photoelectrocatalytic degradation of model environmental pharmaceuticals显示文摘 | Xin Nie Jiangyao Chen Guiying Li Huixian Shi Huijun Zhao Po‐Keung Wong Taicheng An | 2013 | Biotechnol2013,,8: | 1 |
| 19 | Analysis of higher-order self-diffraction of low-power continuous wave based on nonlinear transmission of bR film显示文摘 | Zhang Chunping Chen Guiying Song Q W | 2004 | Modern Optics2004,51,2: | 1 |
| 20 | Complete mitochondrial genome of Nanorana pleskei (Amphibia: Anura: Dicroglossidae) and evolutionary characteristics显示文摘 | Guiying CHEN Bin WANG Jiongyu LIU Feng XIE Jianping JIANG | 2011 | Current Zoology2011,57,6: | 1 |