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| 1 | Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations. | Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song | 2019 | Science Bulletin2019,64,6: | 166 |
| 2 | The first all-season sample set for mapping global land cover with Landsat-8 data显示文摘We report the world's first all-season training and validation sample sets for global land cover classification with Landsat-8 data.Prior to this,such samples were only available at a single date primarily from the growing season.It is unknown how much limitation such a single-date sample has to mapping global land cover in other seasons of the year.To answer this question,we selected available Landsat-8 images from four seasons and collected training and validation samples from them.We compared the performances of training samples in different seasons using Random Forest algorithm.We found that the use of training samples from any individual season would result in the best overall classification accuracy when validated by samples in the same season.The global overall accuracy from combined best seasonal results was 67.2% when classifying the 11 Level-1 classes in the Finer Resolution Observation and Monitoring of Global Land Cover(FROM-GLC) classification system.The use of training samples from all seasons(named all-season training sample set hereafter) produced an overall accuracy of 67.0%.We also tested classification within 10° latitude 60° longitude zones using all-season training subsample within each zone and obtained an overall accuracy of 70.2%.This indicates that properly grouped subsamples in space can help improve classification accuracies.All the results in this study seem to suggest that it is possible to use an all-season training sample set to reach global optimality with universal applicability in classifying images acquired at any time of a year for global land cover mapping. | Congcong Li Peng Gong Jie Wang Zhiliang Zhu Gregory S. Biging Cui Yuan Tengyun Hu Haiying Zhang Qi Wang Xuecao Li Xiaoxuan Liu Yidi Xu Jing Guo Caixia Liu Kwame O. Hackman Meinan Zhang Yuqi Cheng Le Yu Jun Yang Huabing Huang Nicholas Clinton | 2017 | Science Bulletin2017,62,7: | 21 |
| 3 | Competing effects of surface catalysis and ablation in hypersonic reentry aerothermodynamic environment显示文摘Under hypersonic flow conditions, the complicated gas-graphene interactions including surface catalysis and surface ablation would occur concurrently and intervene together with the thermodynamic response induced by spacecraft reentry. In this work, the competing effects of surface heterogeneous catalytic recombination and ablation characteristics at elevated temperatures are investigated using the Reactive Molecular Dynamics(RMD) simulation method. A GasSurface Interaction(GSI) model is established to simulate the collisions of hyper-enthalpy atomic oxygen on graphene films in the temperature range of 500–2500 K. A critical temperature Tcaround900 K is identified to distinguish the graphene responses into two parts: at T < T_(c), the heterogeneous surface catalysis dominates, while the surface ablation plays a leading role at T > T_(c). Contradicting to the traditional Arrhenius expression that the recombination coefficient increases with the increase of surface temperature, the value is found to be relatively uniform at T < T_(c) but declines sharply as the surface temperature increases further due to the competing ablation effect. The occurrence of surface ablation decreases the amounts of active sites on the graphene surface for oxygen adsorption, leading to reduced recombination coefficient from both Langmuir-Hinshelwood(L-H) and Eley-Rideal(E-R) mechanisms. It suggests that the traditional Computational Fluid Dynamics(CFD) simulation method, which relies on the Arrhenius-type catalysis model, would result in large discrepancies in predicting aerodynamic heat for carbon-based materials during reentry into strong aerodynamic thermal environment. | Zhiliang CUI Jin ZHAO Guice YAO Jun ZHANG Zhihui LI Zhigong TANG Dongsheng WEN | 2022 | Chinese Journal of Aeronautics2022,35,10: | 2 |
| 4 | Preparation and photocatalytic properties of silica gel-supported TiO 2显示文摘 | Yan Min Wang Su Wen Liu Zhiliang Xiu Xin Bing Jiao Xiao Peng Cui Jie Pan | 2005 | Materials Letters2005,,7: | 1 |
| 5 | Expert Consensus on the Prevention and Treatment of Hemorrhagic Fever with Renal Syndrome显示文摘Hemorrhagic fever with renal syndrome(HFRS)is an acute zoonosis with a global distribution.China is one of the countries with a high incidence of HFRS,which has long endangered the lives and health of the Chinese people.The Infectious Disease Branch of the Chinese Preventive Medicine Association and the Infectious Diseases Branch of the Chinese Medical Association organized national multidisciplinary experts,based on domestic and international research results combined with experts’practical experiences,to reach this consensus after thorough discussion.This consensus contains 17 recommendations aimed at prevention and identification of important clinical issues to further standardize the prevention,diagnosis,and treatment of HFRS. | Hong Jiang Changxing Huang Xuefan Bai Fuchun Zhang Bingliang Lin Shiwen Wang Zhansheng Jia Jingjun Wang Jing Liu Shuangsuo Dang Yingren Zhao Xiaoguang Dou Fuqiang Cui Wenhong Zhang Jianqi Lian Guiqiang Wang Zhiliang Gao | 2022 | Infectious Diseases & Immunity2022,2,4: | 1 |
| 6 | Ensemble of single-atom catalysis and defect engineering in Cu_(1)/CeO_(2) nanozymes for tumor therapy显示文摘As a class of nanomaterials with natural enzyme-like characteristics, nanozymes have shown their great potential in various applications. Reducible metal oxides featured with defect structures, and single-atom catalysts with isolated metal sites are regarded as two of the most promising nanozymes. However, the strategies to construct highly performed nanozymes by combining these advantages are rarely reported. Herein, we report the coordination-unsaturated single-atomic Cu species supported on sintered CeO_(2), which combines the advantages of defect engineering and single-atom catalysis, exhibiting a largely enhanced peroxidase(POD)-like activity. The high-temperature calcination induces the transformation of inert Cu_(1)O_(4) species into coordination-unsaturated Cu_(1)O_(3) sites. This novel Cu_(1)O_(3) active sites with an unsaturated coordination work as a new type of defect sites to greatly activate the isolated Cu atoms and accelerate the dissociation of H_(2)O_(2) to form hydroxyl radicals(·OH). The obtained nanozyme with a high POD-like activity possesses low cytotoxicity, showing potential applications for the tumor inhibition in vitro and in vivo. | Hao-Xin Liu Zhiliang Gao Han Yan Shan-Qing Li Wei-Wei Wang Xuetao Qin Hongning Sun Jiwei Cui Chun-Jiang Jia | 2023 | Science China Chemistry2023,66,9: | 0 |
| 7 | Co-delivery of enzymes and photosensitizers via metal-phenolic network capsules for enhanced photodynamic therapy显示文摘The intrinsic hypoxic tumor microenvironment and limited accumulation of photosensitizers(PSs) result in unsatisfied efficiency of photodynamic therapy(PDT).To enhance the PDT efficiency against solid tumors,a functional oxygen self-supplying and PS-delivering nanosystem is fabricated via the combination of catalase(CAT),chlorin e6(Ce6) and metal-phenolic network(MPN) capsule.It is demonstrated that the CAT encapsulated in the capsules(named CCM capsules) could catalyze the degradation of hydrogen peroxide(H;O;) to produce molecular oxygen(O;),which could be converted into cytotoxicity reactive oxygen species(ROS) by surface-loaded Ce6 under 660 nm laser irradiation,leading to synergistic anticancer effects in vitro and in vivo.Therefore,the application of CCM capsule could be a promising strategy to improve PDT effectiveness. | Qian Wang Zhiliang Gao Kaijie Zhao Peiyu Zhang Qi-Zhi Zhong Qun Yu Shumei Zhai Jiwei Cui | 2022 | Chinese Chemical Letters2022,33,4: | 0 |
| 8 | Tunable morphologies of polymer capsules templated from cuprous oxide particles for control over cell association显示文摘Over the past two decades,layer-by-layer(LbL) assembly of micro/nanocapsules has been of interest for the investigation of bio-nano interactions to explore bio-applications,such as drug delivery.The choice of an appropriate template that can be easily dissolved under mild conditions is one of the challenges for the assembly of LbL capsules.Herein,we report the engineering of LbL capsules with tunable morphologies using cuprous oxide(Cu_2O) particles as templates.Cu_2O particles with cubic,tetradecahedral or spherical morphologies were synthesized via hydrothermal processes,which can be dissolved under mild condition(e.g.,sodium thiosulfate solution).The influence of capsule morphologies on cell association was investigated,which indicates that LbL capsules with cubic geometry promoted cell association up to 4 and 9-fold than tetradecahedral and spherical capsules,respectively.The reported method provides a new avenue for the assembly of LbL capsules with different morphologies,which has the potential for better understanding of biological interactions of LbL capsules. | Hongyan Pei Yanyan Bai Jianman Guo Zhiliang Gao Qiong Dai Qun Yu Jiwei Cui | 2020 | Chinese Chemical Letters2020,31,2: | 0 |
| 9 | A simple construction of optimal estimation in multivariate marginal Cox regression显示文摘The multivariate extension of the Cox model proposed by Wei,Lin and Weissfeld in 1989 has been widely used for analyzing multivariate survival data.Under the model assumption,failure times from an individual are assumed to marginally follow their respective proportional hazards regression relation,leaving the joint distribution completely unspecified.This paper presents a simple approach to efficiency improvement through segmentation of stochastic integrals in the marginal estimating equations and incorporation of the limiting covariance structure.It is shown that when partition of the time interval is done at a suitable rate,the resulting estimator is consistent and asymptotically normal.Through the reproducing kernel Hilbert space arising from the covariance function of the limiting Gaussian process,it is also shown that the proposed estimator is asymptotically optimal within a reasonable class of estimators under marginal specification.Simulations are conducted to assess the finite-sample performance of the proposed method. | CUI WenQuan YING ZhiLiang ZHAO LinCheng | 2012 | Science China Mathematics2012,55,9: | 0 |
| 10 | Surgical strategy for cerebral arteriovenous malformation with acute hemorrhage显示文摘BACKGROUND: Presently, there have been craniocerebral operation, interventional embolization, stereotactic radiotherapy and other methods in treating cerebral arteriovenous malformation (AVM). However, the standard of different therapeutic regimens of cerebral AVM at the acute stage of hemorrhage has not been completely identified. OBJECTIVE: To observe the clinical characteristics and therapeutic effects of AVM at the acute stage of hemorrhage in patients, and to analyze corresponding therapeutic strategies. DESIGN: Non-randomized clinical observation. SETTING: Department of Neurosurgery, Foshan First People's Hospital, Sun Yat-sen University. PARTICIPANTS: Forty-six patients with cerebral AVM complicated by hemorrhage admitted to Department of Neurosurgery, Foshan First People's Hospital between January 1999 and December 2006, were involved in this study. All the patients were confirmed as cerebral AVM complicated by hemorrhage by brain angiography or/and postoperational pathology. The involved patients, 32 males and 14 females, averaged 25 years old, ranging from 6 to 62 years. Informed consents of therapeutic items were obtained from the relatives of all the patients. METHODS: ①On admission, skull CT and brain angiography were conducted in the involved subjects. ② The therapeutic method was confirmed according to the consciousness, hematoma region, hematoma volume, imageological results following comprehensive analysis. DSA examination was permitted to identify the size and position of abnormal vessel mass, and the distribution of feeding artery and draining vein. Craniocerebral operation was carried out as early as possible in patients with severe or progressive conscious disturbance, in which most of hematoma with obvious occupied effect or cerebral hernia was located in lobe of brain. The primary thing was to clean intracerebral hematoma for in time decompression. According to different situations, corresponding therapeutic measures were used for resecting abnormal vessel mass, and the treatments of patients were observed. ③The therapeutic effects were assessed following Glasgow outcome scale(GOS) at 3 months after hemorrhage. MAIN OUTCOME MEASURES: ① The examination results of skull CT and brain angiography of patients on admission. ② Treatment of patients. ③ GOS results at 3 months after hemorrhage. RESULTS: Forty-six patients were involved, and all of them participated in the final analysis. ① Examination results of skull CT and brain angiography: Bleeding part: frontal lobe in 7 cases, parietal lobe 15, temporal lobe 19, occipital lobe 3, cerebellar hemisphere 2, and hemorrhage rupturing into ventricle 10. Haematoma volume: small volume of hematoma (< 20 mL)in 4 cases, moderate volume of hematoma (20–50 mL)14 , large volume of hematoma (50–80 mL)21, great volume of hematoma (> 80 mL) 7; Abnormal vessel mass: Among 17 patients undergoing aortocranial angiography, abnormal vessel mass was found in 16 patients, including cortex 13 patients, basal ganglia and thalamencephalon(deep part) 2 patients , and posterior cranial fossa 1 patient. The size of abnormal vessel mass: small (< 3 cm) 4 patients, moderate (3–6 cm) 9 patients, and large (> 6 cm) 3 patients. The type of feeding artery: perforating branch blood-supply 1 patient, cortical branch blood supply 13 patients, mixed branch blood supply 2 patients. The type of draining vein: cortical draining (superficial part) 10 patients, deep part draining 2 patients, and mixed draining 4 patients. ② Treatment condition: Among 17 patients undergoing brain angiography followed by craniocerebral operation, hematoma was removed and AVM was completely resected in 12 patients, hematoma was removed and AVM was partially resected in 3 patients, and only hematoma was resected in 2 patients; Among 24 patients undergoing emergent craniocerebral operation, hematoma was removed and AVM was completely resected in 5 patients, hematoma was removed and AVM was partially resected in 9 patients, and only hematoma was resected in 10 patients; Expectant treatment was carried out in the early stage in 5 patients. When disease condition was stable, AVM resection was separately or complicatedlyconducted in 13 patients, embolization in 4 patients, and γ- radiotherapy in 5 patients. ③GOS: 5 patients died in postoperative complications, and among the other patients, 19 had moderate or had not functional impairment, 13 had moderate disability, 6 had severe disability, 2 were vegetative state, and 2 died. ④ Post-operative re-examination of brain angiography: Among 16 patients undergoing AVM, vessel mass disappeared in 9 patients. CONCLUSION: Good therapeutic effects can be obtained by choosing proper therapeutic regimen according to clinical and imageological characteristics of patients with arteriovenous malformation complicated by hemorrhage at the acute stage. | Xuejun Liang Zhiliang Liu Hui Wang Guofu Wang Lianxu Cui Ruiyu He | 2007 | Neural Regeneration Research2007,2,7: | 0 |