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17篇 您的检索式:作者名="Haiguang Liu"
    题名 作者 年代 出处 被引量
1FVID: Fishing Vessel Type Identification Based on VMS Trajectories显示文摘Vessel Monitoring System(VMS) provides a new opportunity for quantified fishing research. Many approaches have been proposed to recognize fishing activities with VMS trajectories based on the types of fishing vessels. However, one research problem is still calling for solutions, how to identify the fishing vessel type based on only VMS trajectories. This problem is important because it requires the fishing vessel type as a preliminary to recognize fishing activities from VMS trajectories. This paper proposes fishing vessel type identification scheme(FVID) based only on VMS trajectories. FVID exploits feature engineering and machine learning schemes of XGBoost as its two key blocks and classifies fishing vessels into nine types. The dataset contains all the fishing vessel trajectories in the East China Sea in March 2017, including 10031 pre-registered fishing vessels and 1350 unregistered vessels of unknown types. In order to verify type identification accuracy, we first conduct a 4-fold cross-validation on the trajectories of registered fishing vessels. The classification accuracy is 95.42%. We then apply FVID to the unregistered fishing vessels to identify their types. After classifying the unregistered fishing vessel types, their fishing activities are further recognized based upon their types. At last, we calculate and compare the fishing density distribution in the East China Sea before and after applying the unregistered fishing vessels, confirming the importance of type identification of unregistered fishing vessels.HUANG Haiguang HONG Feng LIU Jing LIU Chao FENG Yuan GUO Zhongwen 2019Journal of Ocean University of China2019,18,2:8
2Curative effect of scraping therapies on lumbar muscle strain显示文摘OBJECTIVE:To explore factors influencing the curative effect of scraping therapies (at acupoints or along channels) and to determine the relationship of scraping site and strength to curative effect. METHODS: Two hundred and ten patients with lumbar muscle strain were divided into five groups with 42 patients each.The 'scraping therapy at acupoint until appearance of skin eruptions' and 'scraping therapy along channel until appearance of skin eruptions' groups were treated with a 4-daycourse. The 'scraping therapy at acupoint without appearance of skin eruptions', 'scraping therapy along channel without appearance of skin eruptions', and acupuncture groups were treated with a 2-day course.The five groups were treated with seven courses. The visual analog scale (VAS), oswestry disability index (ODI), and lumbago scores were recorded in the five groups before treatment, after each treatment, and in follow-up visits one month and three months after treatment. RESULTS: VAS, ODI, and lumbago scores after treatment improved in the five groups (P<0.01). There was a statistical difference (P<0.01) in the change of VAS scores by appearance of skin eruptions and scraping site. CONCLUSION: Scraping therapy can effectively alleviate lumbago symptoms. The appearance of skin eruptions and scraping therapy along channels can enhance the curative effect of scraping therapy.Yingying Wang Li Yang Jinsheng Yang Jinhong Yang Zhibin Liu Feng Chen Dongxia Liu Haiguang Yuan Liang Wang 2013Journal of Traditional Chinese Medicine2013,33,4:7
3Understanding the relationships between poverty alleviation and ecosystem conservation:empirical evidence from western China显示文摘Despite growing interest in the use of Payments for Ecosystem Services(PES)for both social and ecological benefits,few studies have investigated the feedback and interaction between poverty alleviation and ecosystem protection outcomes.In this study,the poverty reduction effects of PES policies and their subsequent influence on environmental protection outcomes are investigated.To address these questions,222 local rural households who were involved in PES programs from the Habahu National Nature Reserve in western China were interviewed.The results showed that the social and ecological outcomes of PES policies are neither two separate entities nor a trade-off.While rural households are the key participants in PES programs,the social and ecological outcomes of PES policies are closely related to each other.In addition,poverty reduction results could greatly influence ecosystem conservation effects.Livelihood assets,as well as the attitudes of rural households,play important roles in both of the outcomes.This research provides a new perspective that considers the social and ecological benefits of PES policies,and it also calls for an integrated consideration of social and ecological components in tihe design of PES policies to achieve enhanced results both for poverty alleviation and ecosystem conservation.Xujun HU Huiyuan ZHANG Haiguang HAO Danyang FENG Haiyan LIU Qiang ZHANG 2020Frontiers of Earth Science2020,14,1:2
4Review,assessment and recommendations on environmental policies in Western China显示文摘Reviewing the existing environmental policies in Western China,we find that:in time sequence,the characteristics of China's western environmental policies shift from'development drive governance'to the full implementation of environmental protection and construction;and in spatial sequence,the ecological,social,and economic development of Western China reach to coordination through the nature reserve setting,ecological migrants,fiscal transfer payment and differentiated ecological environmental policies.Due to the implementation of the policies and projects,environmental degradation trends in the western ecological environment were alleviated significantly,the living conditions of farmers and herdsmen were improved,and many successful experiences were explored.However,future ecological environmental construction in Western China requires further improvement in integrated planning,eco-compensation mechanism,and policy assessment.This paper concludes with specific recommendations such as drawing up ecological environment construction planning,strengthening environmental law enforcement and incentive mechanisms,improving policy assessment and scientific support,enhancing environmental protection capacity,improving eco-compensation mechanism,and refining the environmental policies for key areas.Huiyuan Zhang Guihuan Liu Haiguang Hao Shufang Liu 2014Chinese Journal of Population,Resources and Environment2014,12,1:1
5Carbon storage of a subtropical forest ecosystem: a case study of the Jinggang Mountain National Nature Reserve in south-eastern China显示文摘The carbon cycle of forest ecosystems plays a key role in regulating CO2 concentrations in the atmosphere. Research on carbon storage estimation of forest ecosystems has become a major research topic. However, carbon budgets of subtropical forest ecosystems have received little attention. Reports of soil carbon storage and topographic heterogeneity of carbon storage are limited. This study focused on the Jinggang Mountain National Nature Reserve as an example of a mid-subtropical forest and evaluated soil and vegetation carbon storage by field sampling combined with GIS, RS and GPS technology. We classified the forest into nine forest types using ALOS high-resolution remote sensing images. The evergreen broad-leaved forest has the largest area, occupying 26.5% of the total area, followed by coniferous and broad-leaved mixed forests and warm temperate coniferous forest, occupying 24.2 and 22.9%, respectively. The vegetation and soil carbon storage of the whole forest ecosystem were 1,692,344 and 5,514,707 t, with a carbon density of 7.4 and 24.2 kg/m^2, respectively, which suggests that the ecosystem has great carbon storage capacity. The topographic heterogeneity of the carbon storage was also analysed. The largest vegetation storage and soil storage is at 700–800 and 1000–1100 m, respectively. The vegetation carbon storage is highest in the southeast, south and southwest.Jiping Zhang Linbo Zhang Haiguang Hao Chunlan Liu Hui Wang 2019Journal of Forestry Research2019,30,3:1
6Scientific objectives of the Hot Universe Baryon Surveyor(HUBS) mission显示文摘The Hot Universe Baryon Surveyor(HUBS) is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. With its unprecedented spatially-resolved high-resolution spectroscopy and large field of view,the HUBS mission will be uniquely qualified to measure the physical and chemical properties of the hot gas in the interstellar medium, the circumgalactic medium, the intergalactic medium, and the intracluster medium. These measurements will be valuable for two key scientific goals of HUBS, namely to unravel the AGN and stellar feedback physics that governs the formation and evolution of galaxies, and to probe the baryon budget and multi-phase states from galactic to cosmological scales. In addition to these two goals, the HUBS mission will also help us solve some problems in the fields of galaxy clusters, AGNs, difuse X-ray backgrounds, supernova remnants, and compact objects. This paper discusses the perspective of advancing these fields using the HUBS telescope.Joel Bregman Renyue Cen Yang Chen Wei Cui Taotao Fang Fulai Guo Edmund Hodges-Kluck Rui Huang Luis C.Ho Li Ji Suoqing Ji Xi Kang Xiaoyu Lai Hui Li Jiangtao Li Miao Li Xiangdong Li Yuan Li Zhaosheng Li Guiyun Liang Helei Liu Wenhao Liu Fangjun Lu Junjie Mao Gabriele Ponti Zhijie Qu Chenxi Shan Lijing Shao Fangzheng Shi Xinwen Shu Lei Sun Mouyuan Sun Hao Tong Junfeng Wang Junxian Wang Q.Daniel Wang Song Wang Tinggui Wang Weiyang Wang Zhongxiang Wang Dandan Xu Haiguang Xu Heng Xu Renxin Xu Xiaojie Xu Yongquan Xue Hang Yang Feng Yuan Shuinai Zhang Yuning Zhang Zhongli Zhang Yuanyuan Zhao Enping Zhou Ping Zhou 2023Science China(Physics,Mechanics & Astronomy)2023,66,9:1
7Virtual Reality Platform Based on Open Sourced Graphics Toolkit Open Scene Graph显示文摘PENG YUAN SHUJIE WANG JIWEI ZHANG HAIGUANG LIU 2007IEEE2007,3,7:1
8Hepatitis B Virus Combo Mutations Improve the Prediction and Active Prophylaxis of Hepatocellular Carcinoma: A Clinic-Based Cohort Study显示文摘Jianhua Yin Junxue Wang Rui Pu Haiguang Xin Zixiong Li Xue Han Yibo Ding Yan Du Wenbin Liu Yang Deng Xiaowei Ji Ming Wu Min Yu Hongwei Zhang Hongyang Wang Timothy C. Thompson Wu Ni Guangwen Cao 2015Cancer Prevention Research2015,,:1
9Clinical effect of Sidong Wubu method in treatment of closed fracture of upper limbs显示文摘OBJECTIVE:To objectively evaluate the clinically curative effect of sidong wubu method on closed fracture of upper limbs.METHODS:A single-blind randomized controlled trial was used to divide 654 patients with closed fracture of upper limbs at early stage into two groups.298 patients in the surgical group were treated with open reduction and internal fixation and 356 patients in the treatment group with sidong wubu method for 6 months as a course of treatment.RESULTS:As for short-term curative effect(after 6 courses of treatment),the total effective rate was 97.7% in the treatment group and 92.9% in the control group,and the excellent and good rate was 83.7% and 76.5% respectively.Fracture-healing time,treatment cost,function-recovering time,scores of symptoms and signs obviously declined in both groups with remarkable difference between the two groups.As to long-term curative effect(after follow-up visit for one year to 5 years and 2 months),there was still noticeable difference(χ 2 = 7.536,P<0.05) in total curative effect and in excellent and good rate between the two groups.CONCLUSION:With low cost,short treatment course,good function and other advantages,sidong wubu method can be first used to treat closed fracture of upper limbs.Puwei Yuan Deyu Liu Qiang Zan Yangquan Hao Qunli Dou Genyin Zhang Haiguang Yuan 2012Journal of Traditional Chinese Medicine2012,32,3:1
10Reflectin基因起源及其蛋白质逐级组装的性质显示文摘文章简介在自然界中,头足纲动物以动态变色和拟态隐形而著称。这其中涉及两种类型的颜色,分别是色素色彩和结构色彩。Reflectin是一类只存在于头足纲动物体内的特殊蛋白质家族,其构成了它们结构色变化的物质基础,然而其基因来源以及如何介导结构色彩变化的分子机理尚不清楚。Zhe Guan Tiantian Cai Zhongmin Liu Yunfeng Dou Xuesong Hu Peng Zhang Xin Sun Hongwei Li Yao Kuang Qiran Zhai Hao Ruan Xuanxuan Li Zeyang Li Qihui Zhu Jingeng Mai Qining Wang Luhua Lai Jianguo Ji Haiguang Liu Bin Xia Taijiao Jiang Shu-Jin Luo Hong-Wei Wang 谢灿 2018科学新闻2018,0,4:0
11XFEL data analysis for structural biology显示文摘Haiguang Liu John C. H. Spence 2016Frontiers of Electrical and Electronic Engineering in China2016,4,3:0
12Effects of phytoplankton community and interaction between environmental variables on nitrogen uptake and transformations in an urban river显示文摘Phytoplankton are not only the main bearer of the nitrogen cycle,but also a key link driving nitrogen cycle.However,most phytoplankton cannot directly use N_(2),and they must uptake nitrogenous nutrients(ammonium,nitrate,and urea)to meet their photosynthesis needs.We examined the uptake characteristics of several nitrogenous substrates using stable isotope technique and identifi ed the potential nitrogen transformations in the Fenhe River.Results revealed that spring phytoplankton community composed of mainly Fragilaria,Ulothrix,Microcystis,and Synedra.Urea can meet the spring partial nitrogen requirement of phytoplankton.The large uptake rate of urea depended on urease,chlorophyll a,and nitrate concentrations as shown in random forest models.Cyanobacteria explained more than 42.8%of the total abundance at all sites in summer.Upstream was dominated by Actinastrum,and Chlorella was relevant in the downstream section.The uptake rates of ammonium were higher than those of nitrate and urea.In addition,the random forest model demonstrated that ammonium,urease,and dissolved oxygen(DO)were the major contributors to the ammonium uptake rates.Ammonium was taken up preferentially in autumn and phytoplankton(Cyclotella,Chlorella,and Pseudanabaena)appeared to be able to respond to changes in nitrogen forms by adjusting their community composition.Structural equation models demonstrated that temperature-induced changes in DO directly affected the transformations of different forms of nitrogen.At the same time,dissolved organic carbon can directly act on nutrients and then indirectly affect enzyme activity.There were great diff erences in the positive and negative effects of different paths in the process of nitrate reduction to nitrite and then reduction to ammonium in time and space.These findings provide a better understanding of the underlying mechanism of nitrogen uptake and the influences of interaction between environmental variables on nitrogen transformations in urban river ecosystems.Jing YANG Haiguang PEI Junping LÜ Qi LIU Fangru NAN Xudong LIU Shulian XIE Jia FENG 2022Journal of Oceanology and Limnology2022,40,3:0
13Modeling of the overwintering distribution of Puccinia striiformis f.sp.tritici based on meteorological data from 2001 to 2012 in China显示文摘Wheat stripe rust caused by Puccinia striiformis f.sp.tritici occurs widely in China and seriously affects wheat production.Global warming could profoundly impact the incidence and prevalence of lowtemperature diseases such as stripe rust.Studies on the effects of temperature on the distribution of overwintering stripe rust could help us understand the incidence and prevalence of the disease and could also provide support for monitoring,forecasting and developing control strategies.An exponential model and a spherical model of the ordinary Kriging method in the ArcGIS platform were used to predict the overwintering regions of stripe rust based on the probability that the average temperature of the coldest month from December to February was higher than–6 or–7°C from 2001 to 2012.The results showed that the areas with a probability between 70%and 90%were transition regions for the overwintering of stripe rust.Based on annual mean temperature of the coldest month from December to February for 2001 to 2012,overwintering distribution of stripe rust was likewise evaluated.The boundary for overwintering of stripe rust was consistent with the areas where the probability was predicted to be 70%to 90%for the overwintering distribution of stripe rust,but the boundary was shifted northward toward Beijing in North China.Some areas in Xinjiang,including Akto,Pishan,Hotan and Yutian,were also predicted to be suitable for the overwintering of stripe rust.Xiaojing WANG Zhanhong MA Yuying JIANG Shouding SHI Wancai LIU Juan ZENG Zhiwei ZHAO Haiguang WANG 2014Frontiers of Agricultural Science and Engineering2014,1,3:0
14Computational simulations reveal the binding dynamics between human ACE2 and the receptor binding domain of SARS-CoV-2 spike protein显示文摘Background:A novel coronavirus(the SARS-CoV-2)has been identified in January 2020 as the causal pathogen for COVID-19,a pandemic started near the end of 2019.The Angiotensin converting enzyme 2 protein(ACE2)utilized by the SARS-CoV as a receptor was found to facilitate the infection of SARS-CoV-2,initiated by the binding of the spike protein to human ACE2.Methods:Using homology modeling and molecular dynamics(MD)simulation methods,we report here the detailed structure and dynamics of the ACE2 in complex with the receptor binding domain(RBD)of the SARS-CoV-2 spike protein.Results:The predicted model is highly consistent with the experimentally determined structures,validating the homology modeling results.Besides the binding interface reported in the crystal structures,novel binding poses are revealed from all-atom MD simulations.The simulation data are used to identify critical residues at the complex interface and provide more details about the interactions between the SARS-CoV-2 RBD and human ACE2.Conclusion:Simulations reveal that RBD binds to both open and closed state of ACE2.Two human ACE2 mutants and rat ACE2 are modeled to study the mutation effects on RBD binding to ACE2.The simulations show that the N-terminal helix and the K353 are very important for the tight binding of the complex,the mutants are found to alter the binding modes of the CoV2-RBD to ACE2.Cecylia SLupala Xuanxuan Li Jian Lei Hong Chen Jianxun Qi Haiguang Liu Xiao-Dong Su 2021Quantitative Biology2021,9,1:0
15Facet-dependent catalytic activity of two-dimensional Ti_(3)C_(2)T_(x) MXene on hydrogen storage performance of MgH_(2)显示文摘Two-dimensional Ti_(3)C_(2)T_(x) MXenes exposing different active facets are introduced into MgH_(2), and their catalytic effects are systematically investigated in depth through experimental and theoretical approaches. Excluding factors such as interlayer space, surface functional groups and experimental contingency, the exposed facets is considered to be the dominant factor for catalytic activity of Ti_(3)C_(2)T_(x) towards MgH_(2).More exposed edge facets of Ti_(3)C_(2)T_(x) displays higher catalytic activity than that with more exposed basal facets, which also leads to different rate-controlling steps of MgH_(2) in the de/hydrogenation process. The low work function, strong hydrogen affinity and high content of in situ metallic Ti for the edge facet contribute the high catalytic activity. This work will give insights into the structural design of two-dimensional Ti_(3)C_(2)T_(x) MXene used for enhancing the catalytic activity in various fields.Haiguang Gao Rui Shi Yana Liu Yunfeng Zhu Jiguang Zhang Liquan Li Xiaohui Hu 2023Journal of Magnesium and Alloys2023,11,10:0
16Evaluation of different crosslinking methods in altering the properties of extrusion-printed chitosan-basedmulti-material hydrogel composites显示文摘Three-dimensional printing technologies exhibit tremendous potential in the advancing fields of tissue engineering and regenerative medicine due to the precise spatial control over depositing the biomaterial.Despite their widespread utilization and numerous advantages,the development of suitable novel biomaterials for extrusion-based 3D printing of scaffolds that support cell attachment,proliferation,and vascularization remains a challenge.Multi-material composite hydrogels present incredible potential in this field.Thus,in this work,a multi-material composite hydrogel with a promising formulation of chitosan/gelatin functionalized with egg white was developed,which provides good printability and shape fidelity.In addition,a series of comparative analyses of different crosslinking agents and processes based on tripolyphosphate(TPP),genipin(GP),and glutaraldehyde(GTA)were investigated and compared to select the ideal crosslinking strategy to enhance the physicochemical and biological properties of the fabricated scaffolds.All of the results indicate that the composite hydrogel and the resulting scaffolds utilizing TPP crosslinking have great potential in tissue engineering,especially for supporting neo-vessel growth into the scaffold and promoting angiogenesis within engineered tissues.Suihong Liu Haiguang Zhang Tilman Ahlfeld David Kilian Yakui Liu Michael Gelinsky Qingxi Hu 2023Bio-Design and Manufacturing2023,6,2:0
17Anomalous refinement and uniformization of grains in metallic thin films显示文摘When a laser beam writes on a metallic film,it usually coarsens and deuniformizes grains because of Ostwald ripening,similar to the case of annealing.Here we show an anomalous refinement effect of metal grains:A metallic silver film with large grains melts and breaks into uniform,close-packed,and ultrafine(~10 nm)grains by laser direct writing with a nanoscale laser spot size and nanosecond pulse that causes localized heating and adaptive shock-cooling.This method exhibits high controllability in both grain size and uniformity,which lies in a linear relationship between the film thickness(h)and grain size(D),D∝h.The linear relationship is significantly different from the classical spinodal dewetting theory obeying a nonlinear relationship(D∝h5/3)in common laser heating.We also demonstrate the application of such a silver film with a grain size of~10.9 nm as a surface-enhanced Raman scattering chip,exhibiting superhigh spatial-uniformity and low detection limit down to 10-15 M.This anomalous refinement effect is general and can be extended to many other metallic films.Lei Wang Shu Wang Xiaofeng Wang Jianming Zhang Jianjie Dong Bin Wei Haiguang Yang Zhongchang Wang Ziyang Zhang ChuanFei Guo Qian Liu 2023Nano Research2023,16,12:0
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