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| 1 | Arrangement of High-standard Basic Farmland Construction Based on Village-region Cultivated Land Quality Uniformity显示文摘As an important constitute of land consolidation, high-standard basic farmland construction is an important means to protect the quantity, quality and ecological environment of cultivated land. Its target not only lies in the increase of cultivated land quantity, but also the improvement of cultivated land quality, agricultural production conditions and ecosystem environments. In the present study, the quality evaluation method and construction arrangement of cultivated land were explored to facilitate the process of decision-making and implementation for high-standard basic farmland construction(HSBFC) with administrative village as the unit. Taking the land comprehensive improvement project area in Quzhou County, Handan City, Hebei Province as a case study, the whole process of the study comprised of three steps: 1) establishment of the evaluation model of cultivated land quality uniformity based on regional optimum cultivated land quality, and construction of the uniformity evaluation index system from the aspects of soil fertility quality, engineering quality, spatial quality and eco-environment quality, according to the new concept of cultivated land quality; 2) calculation of cultivated land quality uniformity by grading indicators, assigning scores and weighting sums, exploring the local homogenization characteristics of regional cultivated land quality through spatial autocorrelation analysis, and analyzing the constraints and transformative potential of barrier factors; 3) arrangement of HSBFC according to the principle of concentration, continuity and priority to the easy operation. The results revealed that the value of farmland quality uniformity for the administrative villages in the study area was between 7.76 and 21.96, and there was a difference between various administrative villages. The regional spatial autocorrelation patterns included High-High(HH), Low-Low(LL), High-Low(HL) and Low-High(LH). These indicate that regional cultivated land quality has local homogenization characteristics. The most restrictive factors in the study area were the medium and low transformation difficulty indexes, including soil organic matter content, farmland shelterbelt network density, field regularity and scale of the field. In addition, there were also high transformation difficulty indicators in some areas, such as sectional configuration. The project area was divided into four partitions: major construction area, secondary construction area, general construction area, and conditional construction area. The cultivated land area of each subarea was 1538.85 ha, 1224.27 ha, 555.93 ha, and 1666.63 ha, respectively. This comprised of 30.87%, 24.56%, 11.15% and 33.42% of the total project area, respectively. The evaluation model and index system could satisfy the evaluation of farmland quality and diagnosis of obstacle factors to facilitate the subsequent construction decision. The present study provides reference for the practice of regional HSBFC, and a new feasible idea and method for related studies. | SONG Wen WU Kening ZHAO Huafu ZHAO Rui LI Ting | 2019 | Chinese Geographical Science2019，29，2： | 12 |
| 2 | Monitoring and Warning of Landslides and Debris Flows Using an Optical Fiber Sensor Technology显示文摘Landslides and debris flows are typical geo-hazards which occur in hilly or mountainous regions. Debris flows may result from landslides. Geotechnical instrumentation plays an important role in monitoring and warning of landslides and resulted debris flows. Traditional technologies for monitoring landslides and debris flows have certain limitations. The new optical fiber sensors presented in this paper can overcome those limitations. This paper presents two new optical fiber sensor systems: one is the Fiber Bragg Grating (FBG)-based in-place inclinometer for monitoring landslides and the other is the FBG-based column-net system for monitoring debris flows. This paper presents the calibration results of FBG-based in-place inclinometers in laboratory. It is found that the calibration results are in good agreement with theoretical results. Both the FBG-based in-place inclinometers and the FBG-based column-net system have been installed at a site in Weijiagou valley, Beichuan County, Sichuan Province of China. Some preliminary results have been obtained and reported in the paper. The advantages of the FBG monitoring systems and their potential applications are also presented. | PEI Huafu CUI Peng YIN Jianhua ZHU Honghu CHEN Xiaoqing PEI Laizheng | 2011 | Journal of Mountain Science2011，8，5： | 12 |
| 3 | Preliminary Study on Cytotoxic Effect of Biodegradation of Magnesium on Cancer Cells显示文摘Biodegradation of magnesium (Mg) based metals in body fluid can lead to a strong alkalinity as well as an increase of Mg2+ concentration in its surrounding environment. In vitro cytotoxic effects of the extracts of pure Mg with and without micro arc oxidation (MAO) coating on osteosarcoma U2-OS cells, a kind of bone cancer cells, were preliminarily studied, independently considering the increase of either alkalinity or Mg2+ concentration. The results indicated that the high alkalinity, i.e., a great increase of pH value, caused by the degradations of Mg with and without MAO coating in the culture medium all showed strong cytotoxic effects on U2-OS cells. However, the increase of Mg2+ concentration had no such cytotoxic effect. This finding may provide an alternative way to cure bone cancers through creating a high alkalinity surrounding the cancer cells. | Yu Zhang Ling Ren Mei Li Xiao Lin Huafu Zhao Ke Yang | 2012 | Journal of Materials Science & Technology2012，28，9： | 11 |
| 4 | Structures of the Bohai Petroliferous Area,Bohai Bay Basin显示文摘This paper, for the first time, deals with a more systematic study of the structures in the Bohaipetroliferous area that covers nearly one third of the Bohai Bay basin. The study mainly involves the effects of preexisting basement faults on the basin formation, the characteristics of basin geometry and kinetics, the modelling of the tectonic-thermal history, the polycyclicity and heterogeneity in the structural evolution and the natural seismic tomographic images of the crust and upper mantle. The authors analyze the features of the dynamic evolution of the basin in the paper and point out that the basin in the Bohai petroliferous area is an extensional pull-apart basin. | CAI Dongsheng LUO Yuhui YAO Changhua HE Jiankun HU Shengbiao LU Huafu WANG Liangshu | 2000 | Acta Geologica Sinica(English Edition)2000，74，3： | 8 |
| 5 | A design study on the CSNS LEBT pre-chopper显示文摘The China Spallation Neutron Source (CSNS) front end incorporates a pre-chopper in the Low Energy Beam Transport line (LEBT) that will remove a 530 ns section of beam at approximately 1 MHz rate, which is the RF frequency of the ring at injection. It's one of the most critical devices for properly controlling the injecting beam loss. Physical designing of the pre-chopper is carried out, and the RFQ itself is used as the beam dump of the chopper system. In order to examine the reliability of the pre-chopper design, the beam study of a similar chopper system is successfully performed. The results of physical design and experiments are presented. | LIU HuaChang OUYANG HuaFu PENG Jun HUANG Tao GONG KeYun XU TaoGuang FU ShiNian | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 3 |
| 6 | Altered relationship between thickness and intrinsic activity amplitude in generalized tonic–clonic seizures显示文摘A thinner cortex has higher potential for binding GABA receptor A which is associated with larger amplitudes of intrinsic brain activity(i BA). However, the relationship between cortical thickness and i BA is unknown in intact and epileptic brains. To this end, we investigated the relationship between cortical thickness measured by highresolution MRI and surface-based i BA derived from resting-state functional MRI in normal controls(n = 82) andpatients with generalized tonic–clonic seizures(GTCS)only(n = 82). We demonstrated that the spatial distribution of cortical thickness negatively correlated with surface-based i BA amplitude at both whole-brain and within independent brain functional networks. In GTCS patients,spatial coupling between thickness and i BA amplitude decreased in the default mode, dorsal attention, and somatomotor networks. In addition, the vertex-wise acrosssubject thickness–i BA amplitude correspondence altered in the frontal and temporal lobes as well as in the precuneus in GTCS patients. The relationship between these two modalities can serve as a brain-based marker for detecting epileptogenic changes. | Wei Liao Jue Wang Ting Xu Zhiqiang Zhang Gong-Jun Ji Qiang Xu Zhengge Wang Fang Yang Xi-Nian Zuo Anqi Qiu Yu-Feng Zang Guangming Lu Huafu Chen | 2016 | Science Bulletin2016，61，24： | 3 |
| 7 | A Longitudinal Functional Magnetic Resonance Imaging Study of Working Memory in Patients Following a Transient Ischemic Attack: A Preliminary Study显示文摘In this study, we used functional magnetic resonance imaging(fMRI) to investigate longitudinal changes in brain activation during a verbal working memory(VWM) task performed by patients who had experienced a transient ischemic attack(TIA). Twenty-five first-ever TIA patients without visible lesions in conventional MRI and 25 healthy volunteers were enrolled. VWM task-related fMRI was conducted 1 week and 3 months post-TIA. The brain activity evoked by the task and changes over time were assessed. We found that, compared with controls, patients exhibited an increased activation in the bilateral inferior frontal gyrus(IFG), right dorsolateral prefrontal cortex(DLPFC), insula, inferior parietal lobe(IPL), and cerebellum during the task performed 1 week post-TIA. But only the right IFG still exhibited an increased activation at 3 months post-TIA. A direct comparison of fMRI data between 1 week and 3 months post-TIA showed greater activation in the bilateral middle temporal gyrus, right DLPFC, IPL, cerebellum, and left IFG in patients at 1 week post-TIA. We conclude that brain activity patterns induced by a VWM task remain dynamic for a period of time after a TIA, despite the cessation of clinical symptoms. Normalization of the VWM activation pattern may be progressively achieved after transient episodes of ischemia in TIA patients. | Wei Su Jian Guo Yun Zhang Jie Zhou Ning Chen Muke Zhou Rong Li Huafu Chen Li He | 2018 | Neuroscience Bulletin2018，34，6： | 3 |
| 8 | Operation of the CSNS Penning surface H^- ion source显示文摘The accelerator complex of the China Spallation Neutron Source (CSNS) consists of a H- linear accelerator (linac) and a rapid cycling synchrotron (RCS). The linac contains a Penning surface H- ion source. The designed energy and the beam current of the source are 50 keV and 20 mA respectively, with a normalized root mean square (norm. rms.) emittance of 0.2π mm mrad. The manufactures and tests of the discharge chamber are in great progress. The construction of H- ion source test stand has been completed, and the operation of the source is also in progress. Stable H- ion beams with energy of 50 keV and current up to 50 mA are attained. Emittance measurement for the H- beam is being prepared. | WU XiaoBing OUYANG HuaFu CHI YunLong HE Wei HUANG Tao LI Gang LIU YingMan LU YanHua XU TaoGuang ZHANG JunSong ZHANG HuaShun ZHAO FuXiang | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 2 |
| 9 | The ER membrane protein complex subunit Emc3 controls angiogenesis via the FZD4/WNT signaling axis显示文摘The endoplasmic reticulum(ER) membrane protein complex(EMC) regulates the synthesis and quality control of membrane proteins with multiple transmembrane domains. One of the membrane spanning subunits, EMC3, is a core member of the EMC complex that provides essential hydrophilic vestibule for substrate insertion. Here, we show that the EMC subunit Emc3 plays critical roles in the retinal vascular angiogenesis by regulating Norrin/Wnt signaling. Postnatal endothelial cell(EC)-specific deletion of Emc3 led to retarded retinal vascular development with a hyperpruned vascular network, the appearance of bluntended, aneurysm-like tip endothelial cells(ECs) with reduced numbers of filopodia and leakage of erythrocytes at the vascular front. Diminished tube formation and cell proliferation were also observed in EMC3 depleted human retinal endothelial cells(HRECs). We then discovered a critical role for EMC3 in expression of FZD4 receptor of β-catenin signaling using RNA sequencing, real-time quantitative PCR(RT-q PCR) and luciferase reporter assay. Moreover, augmentation of Wnt activity via lithium chloride(Li Cl) treatment remarkably enhanced β-catenin signaling and cell proliferation of HRECs. Additionally, Li Cl partially reversed the angiogenesis defects in Emc3-c KO mice. Our data reveal that Emc3 plays essential roles in angiogenesis through direct control of FZD4 expression and Norrin/β-catenin signaling. | Mu Yang Shujin Li Wenjing Liu† Xiao Li Yunqi He Yeming Yang Kuanxiang Sun Lin Zhang Wanli Tian Lixin Duan Huafu Chen Dezhong Yao Zhenglin Yang Xianjun Zhu | 2021 | Science China(Life Sciences)2021，64，11： | 2 |
| 10 | The synchronization of spontaneous BOLD activity predicts extraversion and neuroticism显示文摘 | Luqing Wei Xujun Duan Yang Yang Wei Liao Qing Gao Ju-rong Ding Zhiqiang Zhang Weixi Zeng Yuan Li Guangming Lu Huafu Chen | 2011 | Brain Research2011，，： | 2 |
| 11 | Isocratic elution sys- tem for the determination of catechins, caffeine and gallic acid in green tea using HPLC显示文摘 | WANG Huafu HELLIWELL K YOU Xiaoqing | 2000 | Food Chemistry2000，68，1： | 1 |
| 12 | HPLC determi- nation of catechins in tea leaves and tea extracts using relative re- sponse factors显示文摘 | Wang Huafu Provan Gordon J Helliwell Keith | 2003 | Food Chemistry2003，81，11： | 1 |
| 13 | Closing history of the southern Tianshan oceanic basin, western China: an oblique collisional orogen显示文摘 | Chen Chuming Lu Huafu Jia Dong | 1999 | Tectonophysics1999，302，： | 1 |
| 14 | Observability and estimability of passive radar with unknown illuminator states using different observations显示文摘Most existing studies about passive radar systems are based on the already known illuminator of opportunity(IO)states.However,in practice,the receiver generally has little knowledge about the IO states.Little research has studied this problem.This paper analyzes the observability and estimability for passive radar systems with unknown IO states under three typical scenarios.Besides,the directions of high and low estimability with respect to various states are given.Moreover,two types of observations are taken into account.The effects of different observations on both observability and estimability are well analyzed.For the observability test,linear and nonlinear methods are considered,which proves that both tests are applicable to the system.Numerical simulations confirm the correctness of the theoretical analysis. | JING Tong TIAN Wei HUANG Gaoming PENG Huafu | 2020 | Journal of Systems Engineering and Electronics2020，31，6： | 1 |
| 15 | Epimerisation of catechins in green tea infusions 显示文摘 | Huafu Wang Keith Helliwell | 2000 | Food Chemistry2000，70，： | 1 |
| 16 | Epimerisation of catechins in green tea infusions显示文摘 | Huafu Wang Keith HelliWeill | 2000 | Food Chemistry2000，，70： | 1 |
| 17 | Incremental updatas of closed fre-quent itemsets over continuous data streams显示文摘 | li Huafu Ho Chinchuan Lee Suhyin | 2009 | Expert Systems withApplications2009，36，： | 1 |
| 18 | Analysis of functional networks involved in motor execution and motor imagery using combined hierarchical clustering analysis and independent component analysis显示文摘 | Wang Yuqing Chen Huafu | | 0，，5： | 1 |
| 19 | A single-scan algorithm for mining sequential patterns from data streams 显示文摘 | Li Huafu Ha Chinchuan Chen H | 2012 | International Journal of Innovative Computing2012，8，3： | 1 |
| 20 | Epimerisation of catechins in green tea infusions显示文摘 | WANG Huafu HELLIWELL K | 2000 | Food Chemistry2000，70，： | 1 |
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