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Semantic separator learning and its applications in unsupervised Chinese text parsing

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Frontiers of Computer Science 2013年第1期7卷 55-68页

作者： Yuming WU xiaodong luo Zhen YANG Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China China Telecom Corporation Limited Shanghai Branch Shanghai 200120 China Shanghai Research Institute of China Telecom Corporation Limited Shanghai 200120 China

Grammar learning has been a bottleneck problem for a long time. In this paper, we propose a method of seman- tic separator learning, a special case of grammar learning. The method is based on the hypothesis that some classes of words, called semantic separators, split a sentence into sev- eral constituents. The semantic separators are represented by words together with their part-of-speech tags and other infor- mation so that rich semantic information can be involved. In the method, we first identify the semantic separators with the help of noun phrase boundaries, called subseparators. Next, the argument classes of the separators are learned from cor- pus by generalizing argument instances in a hypernym space. Finally, in order to evaluate the learned semantic separators, we use them in unsupervised Chinese text parsing. The exper- iments on a manually labeled test set show that the proposed method outperforms previous methods of unsupervised text parsing.

关键词： semantic separator separator learning unsuper vised text parsing

High H_(2) selective performance of Ni-Fe-Ca/H-Al catalysts for steam reforming of biomass and plastic

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Journal of Energy Chemistry 2023年第5期80卷 215-227,I0006页

作者： Jin Deng Lingshuai Meng Duo Ma Yujie Zhou Xianyang Wang xiaodong luo Shenfu Yuan School of Chemical Science and Engineering Yunnan Provincial Key Laboratory of Carbon Neutral and Green Low-Carbon TechnologyKey Laboratory of Medicinal Chemistry for Natural ResourceMinistry of EducationNational Center for Experimental Chemistry and Chemical Engineering Education DemonstrationYunnan Characteristic Plant Extraction LaboratorySchool of PharmacyYunnan University650091 KunmingYunnanChina

The development of a selective catalyst for the conversion of biomass and plastics into H2by steam reforming can combat the energy crisis and global *** this work,support Ni-Fe-Ca/H-Al bifunctional catalysts were prepared by loading Ni and Fe into pretreatment CaO/Al_(2)O_(3)(Ca/H-Al)carriers and showed high catalytic activity for the steam reforming of biomass and ***,the idea of bidirectional degradation was exploited to strengthen the pyrolysis of plastic with a high H/C and biomass with a high O/***,the products presented high H2selective(1302.10 m L/g)and low CO_(2)yield(120.23 m L/g)in 7Ni-5Fe-Ca/H-Al(2:4)catalyst compared with current ***,the abundant oxygen vacancies(Ov)in the H-Al carrier exhibited an electron-deficient nature,providing active sites for anchoring Ni ***,Ni O interacted with Ca_(2)Fe_(2)O_(5)to produce more defective Ovsites,which stabilized the NiO particles in the 7Ni-5Fe-Ca/H-Al(2:4)catalyst,and the interaction between the catalyst and the carrier was enhanced,leading to the reduction of weakly basic sites,this property promoted the strong adsorption of CO_(2)and H2O by the catalyst,contributing to the enhancement of efficient steam conversion and the promotion of conversion of by-products to ***,7Ni-5Fe-Ca/H-Al(2:4)catalysts maintained structural integrity after regeneration and exhibited excellent regenerability in H2selection and CO_(2)*** work provides a new idea for the study of efficient H2production from steam reforming of biomass and plastics.

关键词： Biomass and plastic Pyrolysis Steam reforming Ni-Fe-Ca/H-Al catalyst H_(2)selective

Paleophytochemical Constituents from the Pliocene Fossil Wood of Pinus Armandii from Longling,Yunnan

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Acta Geologica Sinica(English Edition) 2008年第6期82卷 1146-1151页

作者： ZHAO Youxing LI Chengsen YI Tiemei luo xiaodong ZHOU Jun State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China Institute of Botany Chinese Academy of Sciences Beijing 100093 China

Specimens of fossil wood preserved lignified in Pliocene brown coal and identified as Pinus armandii Francher come from an opencast coalmine at Longling in western Yunnan Province, China. Phytochemical investigation of the fossil wood isolated using liquid column chromatography seven compounds （1-7） including a new fluorene derivative named 11,11-dimethyl-11H-benzo[b]fluorene. A further 28 volatiles were detected by gas chromatography-mass spectrometry （GC-MS）. Spectroscopic investigation methods, including MS and 1D and 2D-NMR techniques elucidated the structure of the seven compounds. Two types of natural products, isopimara and stilbene commonly occuring in extant and Pliocene fossil P. armandii indicate phytochemical fidelity during burial under certain circumstances in sediments. Discovery of stilbenes that can inhibit the activities of wood-destroying fungi in the Pliocene P. armandii prompts the assumption that the chemical preservation of this Pliocene fossil wood of P. armandii in brown coal might contribute to the presence of inner natural inhibitors against wood-destroying fungi.

关键词： Pliocene wood constituents stilbenoids phytochemistry Pinus armandii

Effect of driver roll rotational speed on hot ring rolling of AZ31 magnesium alloy

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Journal of Magnesium and Alloys 2014年第2期2卷 154-158页

作者： xiaodong luo Lianjie Li Wenlin Xu Yongxiang Zhu College of Metallurgical and Materials Engineering Chongqing University of Science and TechnologyChongqing 400041China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

Based on the ABAQUS/Explicit code,A 3D elastic-plastic and coupled thermo-mechanical FE model of radial ring rolling of AZ31 Magnesium alloy has been proposed to analyze the influence of rotational speed of driver roll to study the inhomogeneity distribution of strain and temperature,fishtail coefficient,rolling force *** results show that:(1)when the rotational speed of driver roll n increases,the strain distribution of the rolled ring becomes less homogeneous,and the temperature distribution more homogeneous yet,and leading to an optimal n value;(2)the fishtail coefficient firstly decreases,then increases with the increase of n;(3)the rolling force,contact area and rolling moment gradually descend with the increase of n.

关键词： Rotational speed of driver roll AZ31 magnesium alloy FEM Ring rolling

Evaluation of a granulated formula for the nerve root type and vertebral artery type of cervical spondylosis：a multicenter,single-blind,randomized,controlled,phase Ⅲ clinical trial

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Journal of Traditional Chinese Medicine 2017年第2期37卷 193-200页

作者： luo xiaodong Wang Peng Li Zhe Liang De Huang Feng Liu Jinwen Chen Xinyu Hu Guoheng Fang Suting Zhang Huajian Department of Encephalopathy TheSecond Affiliated Hospital of Guangzhou University of Chinese Medicine Guangzhou 510370 China Faculty of Chinese Medicine Macao Universityof Science and Technology Macao 999078 China Department of Orthopaedics TheFirst Affiliated Hospital of Guangzhou University of Chinese Medicine Guangzhou 510405 China Department of Orthopaedics The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120 China Department of Cardiology The First AffiliatedHospital of Hunan University of Chinese Medicine Changsha 410007 China Department of Encephalopathy The First Affiliated Hospital of Hunan University of Chinese MedicineChangsha 410007 China Department of Orthopaedics Hubei Provincial Academy of Chinese Medicine Wuhan 430074 China Research Institution Shineway Pharmaceutical Group Ltd. Shijiazhuang 051430 China

OBJECTIVE:To evaluate the effectiveness and safety of cervical spondylosis formula granules in reducing the symptoms of patients with the nerve root type and the vertebral artery type of cervical ***:This was a multicenter, single-blind,randomized, controlled *** April 2002 to November 2003, 499 patients were randomly assigned to either the treatment or the control *** treatment group was orally administered granules prepared with a formula for cervical spondylosis, while the control group was given Jingfukang *** treatment course was 1 month for both ***:In patients with the nerve root type of cervical spondylosis, the total effect rate in the treatment group(87.21%) was significantly higher than that in the control group(80.70%, P 0.05).After the treatment period in both groups,the treatment group had a significantly greater rate of resolution of weakness of the waist and knees than the control group(P < 0.05).CONCLUSION:The cervical spondylosis formula granules significantly improve numbness, muscle strength, and fatigue, and reduce pain in patients with the nerve root type of cervical spondylosis,and improve the weakness of the waist and knees in patients with the vertebral artery type of cervical spondylosis.

关键词： Spondylosis Deficiency of liver and kidney Qi-deficiency blood stasis Jingfukang granules Randomized controlled trial

miR-200b-3p accelerates progression of pituitary adenomas by negatively regulating expression of RECK

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Oncology Research 2024年第5期32卷 933-941页

作者： XIAOXI WANG YANFEI JIA QIANG LI QIANG YANG YINGFENG LIU BEIFENG WEI XIANG NIU YINJIE ZHANG xiaodong luo ZIYU ZHAO PENG WANG Department of Neurosurgery Tianshui First People’s HospitalTianshuiChina Department of Neurosurgery The Second Affiliated Hospital of Lanzhou UniversityLanzhouChina

MicroRNA(miR)-200b-3p has been associated with many tumors,but its involvement in pituitary adenoma is *** study investigated the molecular mechanism underlying miR-200b-3p regulation in pituitary adenomas to provide a theoretical basis for *** was used to analyze pituitary adenoma-related genes and screen new targets related to RECK and *** well,the relationship between miR-200b-3p and RECK protein was verified using a double-luciferase reporter gene *** expression of miR-200b-3p in clinical samples was analyzed by in situ *** of the miR-200b-3p inhibitor and small interfering-RECK(si-RECK)was verified by ***3 cell viability and proliferation were detected using CCK8 and EdU *** was detected by flow cytometry and western *** healing and Transwell assays were used to detect cell migration and *** effects of miR-200b-3p and RECK on GH3 cells were verified using salvage ***-200b-3p was highly expressed in pituitary tumor *** of miR-200b-3p inhibited cell proliferation promoted cell apoptosis,inhibited invasion and migration,and inhibited the expression of matrix ***,miR-200b-3p negatively regulated *** expression of RECK in pituitary adenoma tissues was lower than that in neighboring ***-RECK rescued the function of miR-200b-3p inhibitors in the above cellular behaviors,and miR-200b-3p accelerated the development of pituitary adenoma by negatively regulating RECK *** summary,this study investigated the molecular mechanism by which miR-200b-3p regulates the progression of pituitary adenoma through the negative regulation of *** findings provide a new target for the treatment of pituitary adenoma.

关键词： Pituitary adenomas miR-200b-3p RECK Matrix metalloproteinase

Liposomes as versatile agents for the management of traumatic and nontraumatic central nervous system disorders:drug stability,targeting efficiency,and safety

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Neural Regeneration Research 2025年第7期20卷 1883-1899页

作者： Mingyu Zhang Chunyu Xiang Renrui Niu xiaodong He Wenqi luo Wanguo Liu Rui Gu Department of Orthopedic Surgery China-Japan Union Hospital of Jilin UniversityChangchunJilin ProvinceChina

Various nanoparticle-based drug delivery systems for the treatment of neurological disorders have been widely ***,their inability to cross the blood–brain barrier hampers the clinical translation of these therapeutic *** are nanoparticles composed of lipid bilayers,which can effectively encapsulate drugs and improve drug delivery across the blood–brain barrier and into brain tissue through their targeting and ***,they can potentially treat traumatic and nontraumatic central nervous system *** this review,we outlined the common properties and preparation methods of liposomes,including thin-film hydration,reverse-phase evaporation,solvent injection techniques,detergent removal methods,and microfluidics ***,we comprehensively discussed the current applications of liposomes in central nervous system diseases,such as Alzheimer's disease,Parkinson's disease,Huntington's disease,amyotrophic lateral sclerosis,traumatic brain injury,spinal cord injury,and brain *** studies related to liposomes are still in the laboratory stage and have not yet entered clinical ***,their application as drug delivery systems in clinical practice faces challenges such as drug stability,targeting efficiency,and ***,we proposed development strategies related to liposomes to further promote their development in neurological disease research.

关键词： Alzheimer's disease amyotrophic lateral sclerosis brain tumors central nervous system Huntington's disease liposome drug delivery neurological disorders Parkinson's disease spinal cord injury traumatic brain injury

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雒晓东治疗帕金森病相关疼痛的经验总结

中国民间疗法 2020年第18期28卷 22-25页

作者：吕少华毛振辉雒晓东广州中医药大学第二附属医院广东广州510120 广州中医药大学第二临床医学院广东广州510120 广东省中医院广东广州510120

帕金森病相关疼痛为困扰帕金森病患者、影响其生活质量最主要的症状之一,该文总结雒晓东治疗帕金森病相关疼痛的临床经验,同时通过文献复习,从其现代医学发病机制、治疗方法,中医治疗理论、方法等多方面进行系统阐述,以飨同道。

关键词：帕金森病疼痛雒晓东

“三农”问题分而治之——从方法论的角度探究可操作性政策

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农业经济问题 2005年第3期26卷 35-39页

作者：罗晓东四川大学经济学院成都610065

“三农”问题难以解决的政策原因在于将三者交织和混淆 ,应分开解决。农业增长和粮食增产均不能解决农民增收 ,应以市场扩张和质量安全为目标重新确立农业发展战略 ,以确保粮食安全。农村问题分解后 ,与农业发展、城市化、行政体制改革... 详细信息

“三农”问题难以解决的政策原因在于将三者交织和混淆 ,应分开解决。农业增长和粮食增产均不能解决农民增收 ,应以市场扩张和质量安全为目标重新确立农业发展战略 ,以确保粮食安全。农村问题分解后 ,与农业发展、城市化、行政体制改革等课题结合起来 ,通过制度创新统筹解决。农民问题通过农民转移与土地经营制度改革 ,“以土地换社保” ,按照“先富农民先进城、优质土地先流动”原则渐进式改革 ,随着现代化的推进逐步化解。

关键词： “三农”问题土地经营制度政策农业增长市场扩张农村问题渐进式改革行政体制改革确立先富