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64篇 您的检索式:作者名="Fenglin CHEN"
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1Effects of mixture ratio on anaerobic co-digestion with fruit and vegetable waste and food waste of China显示文摘The biochemical methane potentials for typical fruit and vegetable waste (FVW) and food waste (FW) from a northern China city were investigated,which were 0.30,0.56 m 3 CH 4/kgVS (volatile solids) with biodegradabilities of 59.3% and 83.6%,respectively.Individual anaerobic digestion testes of FVW and FW were conducted at the organic loading rate (OLR) of 3 kg VS/(m 3 ·day) using a lab-scale continuous stirred-tank reactor at 35℃.FVW could be digested stably with the biogas production rate of 2.17 m 3/(m 3 ·day) and methane production yield of 0.42 m 3 CH 4/kg VS.However,anaerobic digestion process for FW was failed due to acids accumulation.The effects of FVW:FW ratio on co-digestion stability and performance were further investigated at the same OLR.At FVW and FW mixing ratios of 2:1 and 1:1,the performance and operation of the digester were maintained stable,with no accumulation of volatile fatty acids (VFA) and ammonia.Changing the feed to a higher FW content in a ratio of FVW to FW 1:2,resulted in an increase in VFAs concentration to 1100-1200mg/L,and the methanogenesis was slightly inhibited.At the optimum mixture ratio 1:1 for co-digestion of FVW with FW,the methane production yield was 0.49 m 3 CH 4/kg VS,and the volatile solids and soluble chemical oxygen demand (sCOD) removal efficiencies were 74.9% and 96.1%,respectively.Jia Lin Jiane Zuo Lili Gan Peng Li Fenglin Liu Kaijun Wang Lei Chen Hainan Gan 2011Journal of Environmental Sciences2011,23,8:36
2Developing the Science Product Algorithm Testbed for Chinese Next-Generation Geostationary Meteorological Satellites:Fengyun-4 Series显示文摘Fengyun-4A(FY-4A), the first of the Chinese next-generation geostationary meteorological satellites, launched in2016, offers several advances over the FY-2: more spectral bands, faster imaging, and infrared hyperspectral measurements. To support the major objective of developing the prototypes of FY-4 science algorithms, two science product algorithm testbeds for imagers and sounders have been developed by the scientists in the FY-4 Algorithm Working Group(AWG). Both testbeds, written in FORTRAN and C programming languages for Linux or UNIX systems, have been tested successfully by using Intel/g compilers. Some important FY-4 science products, including cloud mask, cloud properties, and temperature profiles, have been retrieved successfully through using a proxy imager, Himawari-8/Advanced Himawari Imager(AHI), and sounder data, obtained from the Atmospheric Infra Red Sounder, thus demonstrating their robustness. In addition, in early 2016, the FY-4 AWG was developed based on the imager testbed—a near real-time processing system for Himawari-8/AHI data for use by Chinese weather forecasters.Consequently, robust and flexible science product algorithm testbeds have provided essential and productive tools for popularizing FY-4 data and developing substantial improvements in FY-4 products.Min MIN Chunqiang WU Chuan LI Hui LIU Na XU Xiao WU Lin CHEN Fu WANG Fenglin SUN Danyu QIN Xi WANG Bo LI Zhaojun ZHENG Guangzhen CAO Lixin DONG 2017Journal of Meteorological Research2017,31,4:35
3A Combination of N2 and CO2 Adsorption to Characterize Nanopore Structure of Organic-Rich Lower Silurian Shale in the Upper Yangtze Platform, South China: Implications for Shale Gas Sorption Capacity显示文摘The pores in shales are mainly of nanometer-scale,and their pore size distribution is very important for the preservation and exploitation of shale gas.This study focused on the organic-rich Lower Silurian black shale from four wells in the Upper Yangtze Platform,and their TOC,mineralogical composition and pore characterization were investigated.Low pressure N_2 and CO_2 adsorption were conducted at 77.35 K and 273.15 K,respectively,and the pore structures were characterized by modified Brunauer-Emmett-Teller(BET),Dubinin-Radushkevich(DR),t-plot,BarrettJoyner-Halenda(BJH) and density functional theory(DFT) methods and then the relationship between pore structure and shale gas sorption capacity was discussed.The results indicate that(1) The Lower Silurian shale has high TOC content of 0.92%-4.96%,high quartz content of 30.6%-69.5%,and high clays content of 24.1%-51.2%.The total specific surface area varies from 7.56 m^2/g to 25.86 m^2/g.Both the total specific surface area and quartz content are positively associated with the TOC content.(2)Shale samples with higher TOC content have more micropores,which results in more complex nanopore structure.Micropore volumes/surface areas and non-micropore surface areas all increase with the increasing TOC content.(3) A combination of N_2 and CO_2 adsorption provides the most suitable detection range(~0.3-60 nm) and has high reliability and accuracy for nanopore structure characterization.(4) The TOC content is the key factor to control the gas sorption capacity of the Lower Silurian shale in the Upper Yangtze Platform.CHEN Lei JIANG Zhenxue LIU Keyu GAO Fenglin WANG Pengfei 2017Acta Geologica Sinica(English Edition)2017,91,4:21
4Slip rate along the Lijiang-Ninglang fault zone estimated from repeating microearthquakes显示文摘Seismicity 并且沿着在 1999 和 2006 之间的 Lijiang-Ninglang 差错地区滑动率被调查,波形数据由云南数字地震网络记录了。由双差别方法的重定位的 seismicity 清楚地展出在北、南部的片断之间的不同特征。超过 76% 地震在丽江区域附近发生在差错的南部的片断。重定位的 seismicity 看起来反映学习区域的外壳的速度结构。用跨关联的分析,我们识别了显示出高波形类似的 92 件马甲和 70 根多重谱线的一个总数。大多数这些序列是非周期的,复发间隔从一些分钟变化到几百天。用在学习时期上定期发生了的二个序列,我们获得了一个差错在 ∼23 km 滑动约 5 mm/a 的率,在对的好同意地质并且表面 GPS 测量。LI Le CHEN QiFu NIU FengLin FU Hong LIU RuiFeng HOU YanYan 2009Chinese Science Bulletin2009,54,3:16
5Design and Implementation of a 3D Ocean Virtual Reality and Visualization Engine显示文摘In this study,a 3D virtual reality and visualization engine for rendering the ocean,named VV-Ocean,is designed for marine applications.The design goals of VV-Ocean aim at high fidelity simulation of ocean environment,visualization of massive and multidimensional marine data,and imitation of marine lives.VV-Ocean is composed of five modules,i.e.memory management module,resources management module,scene management module,rendering process management module and interaction management module.There are three core functions in VV-Ocean:reconstructing vivid virtual ocean scenes,visualizing real data dynamically in real time,imitating and simulating marine lives intuitively.Based on VV-Ocean,we establish a sea-land integration platform which can reproduce drifting and diffusion processes of oil spilling from sea bottom to surface.Environment factors such as ocean current and wind field have been considered in this simulation.On this platform oil spilling process can be abstracted as movements of abundant oil particles.The result shows that oil particles blend with water well and the platform meets the requirement for real-time and interactive rendering.VV-Ocean can be widely used in ocean applications such as demonstrating marine operations,facilitating maritime communications,developing ocean games,reducing marine hazards,forecasting the weather over oceans,serving marine tourism,and so on.Finally,further technological improvements of VV-Ocean are discussed.CHEN Ge LI Bo TIAN Fenglin JI Pengbo LI Wenqing 2012Journal of Ocean University of China2012,11,4:10
6Expanded endoscopic therapy criteria should be cautiously used in intramucosal gastric cancer显示文摘Objective: Accurate estimation of lymph node metastasis(LNM) in intramucosal gastric cancer is essential to select less invasive treatment options and even avoid surgery. The aim of this study was to evaluate combined clinicopathological features to predict the presence of LNM.Methods: A retrospective review of data from 386 intramucosal gastric cancer patients who underwent gastrectomy with extended lymphadenectomy from 2003 to 2010 was conducted. The mutual relation between clinicopathological characteristics and LNM was analyzed.Results: LNM was detected in 40(10.4%) of the 386 patients. Histological type and vascular or lymphatic invasion presence showed a positive correlation with LNM occurrence by univariate analysis. Multivariate analysis revealed that histological type was the only factor associated with LNM. Combined clinicopathologic characteristics would be more predictable for LNM. We found no LNM when we used combined clinicopathological characteristics conforming to Japanese absolute indications for endoscopic therapy. The LNM rate was as high as 8.7% when Japanese expanded criteria were used. Univariate analysis in cancer conformity to expand endoscopic submucosal dissection(ESD) indication also revealed that the undifferential type was the only significant factor for LNM.Conclusions: It was possible to predict intramucosal gastric cancer cases without LNM using combined clinicopathological characteristic analysis. Extended indication for ESD should be cautiously used for intramucosal gastric cancer patients.Hongshan Wang Heng Zhang Cong Wang Yong Fang Xuefei Wang Weidong Chen Fenglin Liu Kuntang Shen Xinyu Qin Zhenbin Shen Yihong Sun 2016Chinese Journal of Cancer Research2016,28,3:8
7Recent Progress of Marine Geographic Information System in China:A Review for 2006-2010显示文摘In this article,the progress of marine geographic information system(MGIS) in China during 2006?2010 is reviewed with emphases on generic MGIS,advanced MGIS and MGIS-based applications.Generic MGIS can be divided into two categories:data-oriented MGIS and user-oriented MGIS,recent achievements of which by Chinese researchers are summarized respectively.Advanced MGIS mainly involves the establishment of 3D virtual marine environment and 'Digital Ocean'.An overview of the 3D MGIS based simulations in the context of ocean phenomena,ocean engineering and ocean battlefield is also presented.Several sug-gestions for future development of MGIS in China are proposed,and trends of development are addressed.CHEN Ge LI Wenqing KONG Qianqian LIU Shouxin LV Chongjing TIAN Fenglin 2012Journal of Ocean University of China2012,11,1:7
8Risk factors of prognosis after acute kidney injury in hospitalized patients显示文摘Sasa Nie Zhe Feng Lihua Xia Jiuxu Bai Fenglin Xiao Jian Liu Li Tang Xiangmei Chen 2017Frontiers of Medicine2017,11,3:7
9Archean-Paleoproterozoic Lithospheric Mantle at the Northern Margin of the North China Craton Represented by Tectonically Exhumed Peridotites显示文摘Tectonically emplaced peridotites from North Hebei Province, North China Craton, have retained an original harzburgite mineral assemblage of olivine(54%–58%) + orthopyroxene(40%–46%)+minor clinopyroxene(<1%)+spinel. Samples with boninite-like chemical compositions also coexist with these peridotites. The spinels within the peridotites have high-Al end-members with Al_2O_3 content of 30 wt % –50 wt %, typical of mantle spinels. When compared with experimentally determined melt extraction trajectories, the harzburgites display a high degree of melting and enrichment of SiO_2, which is typical of cratonic mantle peridotites. The peridotites display variably enriched light rare earth elements(REEs), relatively depleted middle REEs and weakly fractionated heavy REEs, which suggest a melt extraction of over 25% in the spinel stability field. The occurrence of arc-and SSZ-type chromian spinels in the peridotites suggests that melt extraction and metasomatism occurred mostly in a subduction-related setting. This is also supported by the geochemical data of the coexisting boninite-like samples. The peridotites have ^(187)Os/^(188)Os ratios ranging from 0.113–0.122, which is typical of cratonic lithospheric mantle. These ^(187)Os/^(188)Os ratios yield model melt extraction ages(TRD) ranging from 981 Ma to 2054 Ma, which may represent the minimum estimation of the melt extraction age. The Al_2O_3-^(187)Os/^(188)Os-proxy isochron ages of 2.4 Ga–2.7 Ga suggest a mantle melt depletion age between the Late Achaean and Early Paleoproterozoic. Both the peridotites and boninite-like rocks are therefore interpreted as tectonically exhumed continental lithospheric mantle of the North China Craton, which has experienced mantle melt depletion and subduction-related mantle metasomatism during the Neoarchean-Paleoproterozoic.TIAN Wei WANG Shuangyue LIU Fenglin CHU Zhuyin WANG Bin CHEN Mimi Jennifer PRICHARD 2017Acta Geologica Sinica(English Edition)2017,91,6:5
10Transfer function-based 2D/3D interactive spatiotemporal visualizations of mesoscale eddies显示文摘In this paper,we present a transfer function-based approach to developing an interactive visualization algorithm for ocean mesoscale eddies.Spatiotemporal coherence and viewport coherence are achieved.Evenly spaced streamlines are only integrated for visible portions of the datasets that maintain a relatively stable visual pattern resolution.The interactive transfer function is introduced to extract 2D and 3D eddy features,such as the Okubo-Weiss parameter,from background ocean currents,and a highly efficient GPU-based framework with an outputsensitive performance is utilized.Using the high-resolution 2D/3D ocean current datasets Maps of Sea Level Anomalies(MSLA)and Hybrid Coordinate Ocean Model(HYCOM),the feasibility and efficiency of our framework are demonstrated.Fenglin Tian Lingqi Cheng Ge Chen 2020International Journal of Digital Earth2020,13,5:4
11Preparation and Surfactant Properties of Amino Acid-based Surfactants显示文摘1-O-aminoacyl-3-O-alkyl acyl glycerols were synthesized by lipases in good yields andtheir surfactant properties were explored.Qian CHEN Steven F. CHEN Zu Yi LI(1 Shanghai Institute of Organic Chemistry. Chinese Academy of Sciences. 354 Fenglin Lu.Shanghai 2000322 Depaftment of Botany. The University of Hong Kong) 1999Chinese Chemical Letters1999,10,9:4
12Semiannual velocity variations around the 2008 M_w 7.9 Wenchuan Earthquake fault zone revealed by ambient noise and ACROSS active source data显示文摘We continuously monitor the long-term seismic velocity variation of one of the major ruptured faults of the devastating 2008 Mw7.9 Wenchuan earthquake in China from July 2009 to January 2012,jointly using accurately controlled routinely operated signal system active source and seismic noise-based monitoring technique.Our measurements show that the temporal velocity change is not homogeneous and highly localized in the damaged fault zone and the adjacent areas.Velocity variations from the active and passive methods are quite consistent,which both are characterized by ±0.2 % seasonal variation,with peak and trough at winter and summer,respectively.The periodic velocity variation within fault zone exhibits remarkably positive correlation with barometric pressure with stress sensitivity in the order of 10-6Pa-1,suggesting that the plausible mechanism might be the crack density variation of the shallow subsurface medium of the damaged fault zone in response to the cyclic barometric pressure loading.Haichao Chen Hongkui Ge Fenglin Niu 2014Earthquake Science2014,27,5:4
13A Real-Time Photo-Realistic Rendering Algorithm of Ocean Color Based on Bio-Optical Model显示文摘A real-time photo-realistic rendering algorithm of ocean color is introduced in the paper, which considers the impact of ocean bio-optical model. The ocean bio-optical model mainly involves the phytoplankton, colored dissolved organic material(CDOM), inorganic suspended particle, etc., which have different contributions to absorption and scattering of light. We decompose the emergent light of the ocean surface into the reflected light from the sun and the sky, and the subsurface scattering light. We establish an ocean surface transmission model based on ocean bidirectional reflectance distribution function(BRDF) and the Fresnel law, and this model's outputs would be the incident light parameters of subsurface scattering. Using ocean subsurface scattering algorithm combined with bio-optical model, we compute the scattering light emergent radiation in different directions. Then, we blend the reflection of sunlight and sky light to implement the real-time ocean color rendering in graphics processing unit(GPU). Finally, we use two kinds of radiance reflectance calculated by Hydrolight radiative transfer model and our algorithm to validate the physical reality of our method, and the results show that our algorithm can achieve real-time highly realistic ocean color scenes.MA Chunyong XU Shu WANG Hongsong TIAN Fenglin CHEN Ge 2016Journal of Ocean University of China2016,15,6:4
14Methanogenic community dynamics in anaerobic co-digestion of fruit and vegetable waste and food waste显示文摘A lab-scale continuously-stirred tank reactor (CSTR), used for anaerobic co-digestion of fruit and vegetable waste (FVW) and food waste (FW) at different mixture ratios, was operated for 178 days at the organic loading rate of 3 kg VS (volatile solids)/(m3·day). The dynamics of the Archaeal community and the correlations between environmental variables and methanogenic community structure were analyzed by polymerase chain reactions-denaturing gradient gel electrophoresis (PCR-DGGE) and redundancy analysis (RDA), respectively. PCR-DGGE results demonstrated that the mixture ratio of FVW to FW altered the community composition of Archaea. As the FVW/FW ratio increased, Methanoculleus, Methanosaeta and Methanosarcina became the predominant methanogens in the community. Redundancy analysis results indicated that the shift of the methanogenic community was significantly correlated with the composition of acidogenic products and methane production yield. Different mixture ratios of substrates led to different compositions of intermediate metabolites, which may affect the methanogenic community. These results suggested that the analysis of microbial communities could be used to diagnose anaerobic processes.Jia Lin Jiane Zuo Ruofan Ji Xiaojie Chen Fenglin Liu Kaijun Wang Yunfeng Yang 2012Journal of Environmental Sciences2012,24,7:4
15Engineering of carbon and other protective coating layers for stabilizing silicon anode materials显示文摘Silicon(Si)has been attracting extensive attention for rechargeable lithium(Li)‐ion batteries due to its high theoretical capacity and low potential vs Li/Li+.However,it remains challenging and problematic to stabilize the Si materials during electrochemical cycling because of the huge volume expansion,which results in losing electric contact and pulverization of Si particles.Consequently,the Si anode materials generally suffer from poor cycling,poor rate performance,and low coulomb efficiency,preventing them from practical applications.Up‐to‐date,there are numerous reports on the engineering of Si anode materials at microscale and nanoscale with significantly improved electrochemical performances.In this review,we will concentrate on various precisely designed protective layers for silicon‐based materials,including carbon layers,inorganic layers,and conductive polymer protective layer.First,we briefly introduced the alloying and failure mechanism of Si as anode materials upon electrochemical reactions.Following that,representative cases have been introduced and summarized to illustrate the purpose and advancement of protective coating layers,for instance,to alleviate pulverization and improve conductivity caused by volume expansion of Si particles during charge/discharge process,and maintain the surface stability of Si particles to form a stable solid‐electrolyte interphase layer.At last,possible strategies on the protective coating layer for stabilizing silicon anode materials that can be applied in the future have been indicated.Fenglin Wang Gen Chen Ning Zhang Xiaohe Liu Renzhi Ma 2019Carbon Energy2019,1,2:3
16Rupture of the 2004 Sumatra-Andaman earthquake inferred from direct P-wave imaging显示文摘The Sumatra-Andaman earthquake on December 26, 2004 is the first well recorded gigantic earthquake (moment magnitude MW 9.3) by modern broadband seismic and Global Positioning System networks. The rich seismic and geodetic recordings have documented unprecedented details about the earthquake rupture, coseismic and postseismic deformations. This is a report of detailed images of the rupture process using the first-arriving compressional waves recorded by the China National Digital Seismic Network (CNDSN). An improved imaging condition was employed to account for the sparse distribution of the CNDSN stations. The resulting images are consistent with the major rupture features reported by previous seismic and geodetic studies. It is found that the earthquake rupture initiated at offshore of northwestern Sumatra and propagated in the north northwest direction at a speed of 2.7 ± 0.2 km/s. The rupture continued for at least 420 s and extended about 1200-1300 km along the Andaman trough with two bursts of seismic energy.LIU Ning CHEN QiFu NIU FengLin CHEN Yong 2007Chinese Science Bulletin2007,52,14:3
17Three-dimensional mesoscale eddy identification and tracking algorithm based on pressure anomalies Liming显示文摘The Kuroshio Extension(KE)is one of the most eddy-energetic regions in the global ocean.However,most mesoscale eddy studies in the region are focused on surface eddies and the structure and characteristics of three-dimensional(3-D)eddies require additional research.In this study,we proposed a 3-D eddy identification and tracking algorithm based on pressure anomalies,similar to sea level anomalies(SLAs)for surface eddy identification.We applied this scheme to a 5-year(2008-2012)high-resolution numerical product to develop a 3-D eddy dataset in the KE.The reliability of the numerical product was verified by the 5-year temperature/salinity hydrological characteristics and surface eddy distribution.According to the 3-D eddy tracking dataset,the number of eddies decreased dramatically as the eddy existence-time increased and more anticyclonic eddies(AEs)had an existence-time longer than 1 week than cyclonic eddies(CEs).We presented daily variations in the 3-D structure of two 3-D eddy-tracking trajectories that exhibit a certain jump in depth and a shift toward the west and equator.In addition to the bowl,lens,and cone eddies that have been discovered by previous researchers,we found that there is a cylindrical eddy,and its eddy radii are almost consistent across all layers.CEs cause significant negative temperature anomalies,“negative-positive”salinity anomalies,and sinking current fields in the KE region,while AEs cause positive temperature anomalies,“positive-negative”salinity anomalies,and upward current fields.The four types of eddies have different effects on the temperature/salinity anomalies and current field distribution which are related to their structure.Liming YUAN Fenglin TIAN Suqin XU Chun ZHOU Jie CHEN 2021Journal of Oceanology and Limnology2021,39,6:2
18Dual-targeting prodrug nanotheranostics for NIR-Ⅱfluorescence imaging-guided photo-immunotherapy of glioblastoma显示文摘Glioblastoma(GBM) therapy is severely impaired by the blood-brain barrier(BBB) and invasive tumor growth in the central nervous system.To improve GBM therapy,we herein presented a dual-targeting nanotheranostic for second near-infrared(NIR-Ⅱ) fluorescence imaging-guided photoimmunotherapy.Firstly,a NIR-Ⅱ fluorophore MRP bearing donor-acceptor-donor(D-A-D) backbone was synthesized.Then,the prodrug nanotheranostics were prepared by self-assembling MRP with a prodrug of JQ1(JPC) and T7 ligand-modified PEG5k-DSPE.T7 can cross the BBB for tumor-targeted delivery of JPC and MRP.JQ1 could be restored from JPC at the tumor site for suppressing interferon gamma-inducible programmed death ligand 1 expression in the tumor cells.MRP could generate NIR-Ⅱ fluorescence to navigate 808 nm laser,induce a photothermal effect to trigger in-situ antigen release at the tumor site,and ultimately elicit antitumor immunogenicity.Photo-immunotherapy with JPC and MRP dual-loaded nanoparticles remarkably inhibited GBM tumor growth in vivo.The dual-targeting nanotheranostic might represent a novel nanoplatform for precise photo-immunotherapy of GBM.Fenglin Li Yi Lai Jiayi Ye Madiha Saeed Yijing Dang Zhifeng Zou Fangmin Chen Wen Zhang Zhiai Xu 2022Acta Pharmaceutica Sinica B2022,12,9:2
19A novel vector of topological and structural information for amino acids and its QSAR applications for peptides and analogues显示文摘A new descriptor, called vector of topological and structural information for coded and noncoded amino acids (VTSA), was derived by principal component analysis (PCA) from a matrix of 66 topological and structural variables of 134 amino acids. The VTSA vector was then applied into two sets of peptide quantitative structure-activity relationships or quantitative sequence-activity modelings (QSARs/ QSAMs). Molded by genetic partial least squares (GPLS), support vector machine (SVM), and immune neural network (INN), good results were obtained. For the datasets of 58 angiotensin converting en-zyme inhibitors (ACEI) and 89 elastase substrate catalyzed kinetics (ESCK) , the R2, cross-validation R2, and root mean square error of estimation (RMSEE) were as follows: ACEI, R2cu≥0.82, Q2cu≥0.77, Ermse≤0.44 (GPLS+SVM); ESCK, R2cu≥0.84, Q2cu≥0.82, Ermse≤0.20 (GPLS+INN), respectively.LI ZhiLiang LI GenRong SHU Mao SUN JiaYing YANG ShanBin MEI Hu ZHANG MengJun ZHOU Ping WU ShiRong CHEN GuoHua LU FengLin LU TingTing 2008Science China Chemistry2008,51,10:2
20Synthesis of per(poly)fluoroalkyl substituted alkenes and alkynes——Utilizing potassium fluoride supported on alumina as a denydrohalogenating agent显示文摘Potassium fluoride on alumina was proved to be an efficient dehydrohalogenating agent for the synthesis of per(poly)fluoroalkyl substituted alkenes and alkynes. The reaction was simple, mild and the yields ranged from good to excellent.CHEN, Jian HU, Chang-MingShanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China 1994Chinese Journal of Chemistry1994,12,5:2
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