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基于既定词表的自适应汉语分词技术研究

现代图书情报技术 2006年第5期 13-17页

作者：黄水清程冲南京农业大学信息科技学院南京210095

提出一种汉语分词算法,在给定的分词词表的基础上进行汉语分词时,不但能成功切分出分词词表中已有的词,而且能同时自动识别出分词词表中没有的词,即未登录词。与逆向最长匹配法以及其他未登录词识别算法进行的测试比较表明,该分词算法... 详细信息

提出一种汉语分词算法,在给定的分词词表的基础上进行汉语分词时,不但能成功切分出分词词表中已有的词,而且能同时自动识别出分词词表中没有的词,即未登录词。与逆向最长匹配法以及其他未登录词识别算法进行的测试比较表明,该分词算法可以有效地解决大多数未登录词的识别问题,并且能减少分词错误,同时对分词算法的效率基本没有影响。

关键词：自动分词新词识别未登录词

Increased Expression of Serum Monocyte Chemoattractant Protein-1,Chemokine(C-C motif)Ligand 3,and Interleukins in Patients With Vitiligo

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International Journal of Dermatology and Venereology 2024年第1期7卷 40-43页

作者： Xiao-Ling Zhao Ya-Lan Li Zi-Han Li Xiao-chong Zhang Li-Hui An Yu-Jiao Sun Deng-Xiang Liu Fang cheng Cancer Laboratory Xingtai People’s HospitalXingtaiHebei 054001China Endocrine Department Xingtai People’s HospitalXingtaiHebei 130500China Dermatological Department Xingtai People’s HospitalXingtaiHebei 054001China

Objective:Vitiligo is a chronic,acquired depigmentation of the skin,which can be divided into active and stable *** stable and active stages are not immutable and often *** of internal markers would help to diagnose the active stage of vitiligo,and the purpose of this study was to find potential active markers in the progression of ***:We compared 30 healthy controls to 60 patients with vitiligo(30 with active disease and 30 with stable disease)regarding the expression of serum monocyte chemoattractant protein(MCP)-1,chemokine(C-C motif)ligand(CCL)3,CCL5,CCL21,interleukin(IL)-6,and *** were collected from May 2017 to December *** detection was carried out by enzyme-linked immunosorbent *** difference between groups was compared by Kruskal-Wallis H test and Mann-Whitney U ***:We found that the serum levels of MCP-1,CCL3,IL-6,and IL-17 were significantly higher in patients with vitiligo than in healthy controls(P<0.01)and that IL-17 was higher in patients with active vitiligo than in those with stable vitiligo(P<0.01).After 3months of treatment,the serum IL-17 level of patients with active vitiligo was not significantly different from that before treatment(P=0.526);after 6months of treatment,however,the serum IL-17 level had significantly decreased(P<0.01).Conclusion:These findings suggest that the serum IL-17 level can be used as a marker of vitiligo disease activity giving it certain guiding significance for clinical treatment.

关键词： clinical marker serum cytokines vitiligo

Super P and MoO2/MoS2 co-doped gradient nanofiber membrane as multi-functional separator for lithium–sulfur batteries

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Rare Metals 2024年第9期43卷 4263-4273页

作者： Xin Liang Dong-Qing Zhao Qian-Qian Huang Sheng Liang Li-Li Wang Lei Hu Ling-Li Liu Kun-Hong Hu chong-Hai Deng Sheng cheng Er-Tao Zhu Hua-Xia Deng School of Energy Materials and Chemical Engineering LIB Technology Center of Anhui ProvinceHefei University Instrumental Analysis Centre Hefei University of Technology Hefei Youngy Energy Materials Co. Ltd. Department of Modern Mechanics University of Science and Technology of China

Lithium-sulfur battery is one of the most promising battery systems for industrialization due to its high theoretical specific capacity and high energy ***,the??shuttle effect??has restrained the advancement of lithium-sulfur *** this work,a gradient-structured nanofiber membrane with pure gelatin on one side and Super P-MoO2/MoS2-gelatin on the other side was created using a multi-step electrostatic spinning technique,which was applied for multi-functional separator for lithium-sulfur *** pure gelatin layer facing the anode side primarily homogenizes the lithium flux,whereas the Super P-MoO2/MoS2-gelatin layer facing the cathode side primarily adsorbs polysulfides by physical and chemical adsorption and enhancing polysulfide conversion *** findings demonstrate that even after 150 cycles at 0.2C,the lithium-sulfur battery can still sustain a discharge-specific capacity of 572.3 mAh·*** used with Li||Li symmetric batteries,it has a cycle life of more than 1200 *** commercialization of lithium-sulfur batteries is given a fresh idea by this straightforward preparation technique.

关键词： Li–S battery Membrane MoO2/MoS2 Nanofiber

Bone metastasis is a late-onset and unfavorable event in survivors of gastric cancer after radical gastrectomy:Results from a clinical observational cohort

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Cancer Pathogenesis and Therapy 2024年第1期2卷 50-57页

作者： cheng Zhang Xiaopeng Zhang chong Feng Yahui Yang Minmin Xie Ying Feng Zhijun Wu Hui Xu Changhao Wu Tai Ma Department of Oncology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui 230022China Anhui Provincial Cancer Institute/Anhui Provincial Office for Cancer Prevention and Control HefeiAnhui 230022China Department of Noncommunicable Diseases and Health Education Hefei Center for Disease Control and PreventionHefeiAnhui 230091China Department of Oncology The Second Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu 221006China Department of Oncology Ma’anshan Municipal People’s HospitalMa’anshanAnhui 243099China Department of Biochemistry and Physiology Faculty of Health and Medical SciencesUniversity of SurreyGuildford GU27HXUnited Kingdom

Background The timing and incidence of recurrent bone metastasis(BM)after radical gastrectomy in patients with gastric cancer(GC)as well as the survival of these patients were not fully *** aim of this study was to analyze the data of an observational GC cohort and identify patients who underwent curative gastrectomy and had recurrent BM to describe and clarify the pattern and profile of BM evolution after *** Data were retrieved from a hospital-based GC cohort,and patients who underwent upfront radical gastrectomy were *** time points of specific organ metastatic events were recorded,and the person-year incidence rate of metastatic events was *** latency period of BM events after gastrectomy was measured and compared with that of the other two most common metastatic events,liver metastasis(LM)and distant lymph node metastasis(LNM),using analysis of *** score matching and subgroup analysis were used for sensitivity *** A total of 1324 GC cases underwent radical gastrectomy between January 2011 and December *** these,67 BM,218 LM,and 248 LNM occurred before the last *** incidence of BM events was 1.7/100 person-years,which was approximately 3-fold lower than that of LM and distant LNM events(5.5 and 6.3 per 100 person-years,respectively).BM events had a significantly longer latency(median time,16.5 months)than LM and LNM events(11.1 and 12.0 months,respectively).Recurrent BM led to a worse prognosis(median survival,4.5 months)than those of LM and LNM events(median survival,7.7 and 7.1 months,respectively).However,no difference in overall survival after gastrectomy was observed among the *** Compared with other common metastatic events,BM in GC after gastrectomy is a late-onset event indicating poor survival.

关键词： Stomach neoplasms Neoplasm metastasis Incidence Survival analysis Propensity score

2-氨基噻唑衍生物的设计、合成及对细胞凋亡的抑制活性

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药学学报 2006年第8期41卷 727-734页

作者：姜凤超成冲云华中科技大学同济医学院药学院湖北武汉430030

目的研究2氨-基噻唑衍生物对神经细胞凋亡的抑制作用和构效关系。方法以PFTα-为先导物,设计并合成出相应的2-氨基噻唑衍生物,利用MTT法和FCM法测定其对由过氧化氢诱导产生的PC12细胞凋亡的抑制作用,利用Cerius2的QSAR+模块,求出其QSAR... 详细信息

目的研究2氨-基噻唑衍生物对神经细胞凋亡的抑制作用和构效关系。方法以PFTα-为先导物,设计并合成出相应的2-氨基噻唑衍生物,利用MTT法和FCM法测定其对由过氧化氢诱导产生的PC12细胞凋亡的抑制作用,利用Cerius2的QSAR+模块,求出其QSAR方程。结果合成了11个新型含2氨-基噻唑母环的Sch iff碱化合物II,利用IR,MS,1H NMR,13C NMR等法对上述化合物进行表征。细胞实验结果表明,2氨-基噻唑衍生物对PC12细胞具有一定的保护作用并对由过氧化氢诱导的PC12细胞凋亡具有一定的抑制作用。优化QSAR方程为Activity=6.947 68-0.088 72×“LUMO”-0.043 018×“A logp98”-0.128 752×“Rad0 fG ration”+0.018 246×“D ipole-m ag”,上述方程的相关统计参数如下,r2=0.970,F-test=49.149,r=0.985,Lse=0.001。结论2氨-基噻唑衍生物对由过氧化氢诱导的PC12细胞凋亡具有较为明显的抑制作用,部分化合物如I-6,I-9和II-6对于PC12细胞具有细胞保护和细胞凋亡抑制双重活性。QSAR方程提示降低化合物的旋转半径以及化合物最低空轨道的能量有利于提高化合物的活性。

关键词： 2-氨基噻唑衍生物结构修饰神经细胞保护 QSAR研究细胞凋亡抑制剂

新中国针灸学的开拓与革新者——记中国中医科学院针灸研究所创建人朱琏同志

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中国针灸 2007年第11期27卷 845-848页

作者：马兰萍薛崇成中国中医科学院针灸研究所北京100700

朱琏同志为中国中医科学院针灸研究所的主要创建人,是西医学习中医的带头人。朱琏同志对针灸事业的主要贡献有学习针灸医学,推广针灸疗法;心系针灸事业,创建针灸研究机构,并较早进行针灸国际交流;注重临床实践,倡导针灸科研;著《新针灸... 详细信息

朱琏同志为中国中医科学院针灸研究所的主要创建人,是西医学习中医的带头人。朱琏同志对针灸事业的主要贡献有学习针灸医学,推广针灸疗法;心系针灸事业,创建针灸研究机构,并较早进行针灸国际交流;注重临床实践,倡导针灸科研;著《新针灸学》,传道后学。

关键词：针灸学传记中国中医研究院 @朱琏

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基于P2P端点目录的索引方法APNI

计算机工程 2008年第23期34卷 74-75,88页

作者：程崇燕张晶天津师范大学计算机与信息工程学院天津300387 中国民航大学计算机学院天津300300

针对在P2P环境中可扩展标记语言的端点目录管理的要求,提出一种APNI索引方法,该索引方法利用素数索引方法(Prime NumberIndex)并加以改进,借以素数索引表和层次索引表辅助。实验结果表明,APNI查询结果比Prime Number Index更快。

关键词：可扩展标记语言 P2P网络 APNI索引方法素数索引方法

光纤拉曼放大器中的广义损耗系数和特性模拟新算法

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中国激光 2001年第12期28卷 1113-1116页

作者：王四海范崇澄清华大学电子工程系北京100084

通过引入广义损耗系数的概念,给出了计算机模拟光纤拉曼放大器(FRA)的一种新算法。该算法不用假设抽运光和信号光衰减系数相同,且可大大增加饱和放大状态下的迭代步长。用于光纤拉曼放大器增益、噪声系数等的数值模拟时,可在保证精度的... 详细信息

通过引入广义损耗系数的概念,给出了计算机模拟光纤拉曼放大器(FRA)的一种新算法。该算法不用假设抽运光和信号光衰减系数相同,且可大大增加饱和放大状态下的迭代步长。用于光纤拉曼放大器增益、噪声系数等的数值模拟时,可在保证精度的同时显著缩短迭代时间。

关键词：光纤拉曼放大器受激拉曼散射广义损耗系统

复杂条件下分布光纤拉曼放大器噪声特性的解析表达式

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中国激光 2002年第7期29卷 635-638页

作者：王四海范崇澄清华大学电子工程系北京100084

在同时考虑抽运光和信号光之间不同偏振态、多波长抽运以及抽运光和信号光损耗系数不同的情况下 ,导出了分布光纤拉曼放大器 (DFRA)的等效噪声系数解析公式 ,并据此定量研究了抽运光和信号光之间的偏振关系对DFRA特性的影响以及DFRA与... 详细信息

在同时考虑抽运光和信号光之间不同偏振态、多波长抽运以及抽运光和信号光损耗系数不同的情况下 ,导出了分布光纤拉曼放大器 (DFRA)的等效噪声系数解析公式 ,并据此定量研究了抽运光和信号光之间的偏振关系对DFRA特性的影响以及DFRA与掺铒光纤放大器 (EDFA)级联时系统光信噪比 (OSNR)的改善ΔOSNR。指出 :随着DFRA开关增益的增加 ,ΔOSNR会由线性增加逐渐变为对数增加而趋于饱和。

关键词：分布光纤拉曼放大器等效噪声系数光信噪比掺铒光纤放大器光通信