检索结果-南通市图书馆

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

清代东北地区满族鹿文化考略

满语研究 2024年第1期 135-144页

作者：穆崟臣张睿航东北大学秦皇岛分校民族学学院

鹿对于满族及其先民来说，不仅是生产生活的物质保障，也是崇拜和敬畏的神灵。作为一种文化象征符号，鹿承载着满族人对于祥瑞、福禄、安康的追求。有清一代，鹿在较大规格的祭祀活动和民间活动中扮演着重要角色，鹿类祭品常应用于皇室... 详细信息

鹿对于满族及其先民来说，不仅是生产生活的物质保障，也是崇拜和敬畏的神灵。作为一种文化象征符号，鹿承载着满族人对于祥瑞、福禄、安康的追求。有清一代，鹿在较大规格的祭祀活动和民间活动中扮演着重要角色，鹿类祭品常应用于皇室敬天祖法与民俗活动。满族人生仪礼中也蕴藏大量鹿文化元素，在仪式共同参与中凸显东北地区特有的伦理思想与人生观。鹿亦是清代东北地区的重要贡物，统治者常运用鹿文化符号来树立自己的统治形象与权威。

关键词：清代东北地区满族鹿文化

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

融合强化学习的实体关系联合抽取模型

电子科技大学学报 2024年第2期53卷 243-251页

作者：翟社平李航亢鑫年杨锐西安邮电大学计算机学院西安710121 陕西省网络数据分析与智能处理重点实验室西安710121

现有的实体关系联合抽取任务为了自动生成大规模训练数据引入远程监督策略,在处理数据时产生严重的噪声数据问题。对此提出了一种融合强化学习的实体关系联合抽取模型,该模型由强化学习和联合抽取模型两个部分组成,其中联合抽取模型由... 详细信息

现有的实体关系联合抽取任务为了自动生成大规模训练数据引入远程监督策略,在处理数据时产生严重的噪声数据问题。对此提出了一种融合强化学习的实体关系联合抽取模型,该模型由强化学习和联合抽取模型两个部分组成,其中联合抽取模型由图卷积网络和多头自注意力机制构成。首先,使用强化学习去除原始数据集中带有噪声的句子,将降噪后的高质量句子输入到联合抽取模型中;其次,使用联合抽取模型对输入句子中的实体和关系进行预测抽取,并向强化学习提供反馈奖励,指导强化学习挑选出高质量的句子;最后,对强化学习和联合抽取模型进行联合训练,并对模型进行迭代优化。实验证明了该模型能够有效处理数据噪声问题,在实体关系抽取方面优于基线方法。

关键词：实体关系联合抽取噪声数据强化学习多头自注意力机制图卷积网络

Hematochezia due to rectal invasion by an internal iliac artery aneurysm: A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第11期12卷 1980-1989页

作者： Fang Li Bin Zhao Yong-qiang Liu Guo-Qing Chen Rong-Feng Qu Chao Xu Zhui Long Jin-Song Wu Mao Xiong Wei-hang Liu Li Zhu Xiao-Ling Feng Lei Zhang Department of General Surgery Chongqing General HospitalChongqing 401147China

BACKGROUND This case report presents the rare occurrence of hematochezia due to an internal iliac artery aneurysm leading to an arterioenteric fistula,expanding the differential diagnosis for gastrointestinal *** emphasizes the importance of considering vascular origins in cases of atypical hematochezia,particularly in the absence of common gastrointestinal causes,and highlights the role of imaging and multidisciplinary management in diagnosing and treating such unusual *** SUMMARY A 75-year-old man with a history of hypertension presented with 12 d of hematochezia,experiencing bloody stools 7-8 times per *** computed tomography(CT)scans revealed an aneurysmal rupture near the right internal iliac artery with suspected hematoma *** levels progressively decreased to 7 g/*** arterial angiography and iliac arterycovered stent placement were performed,followed by balloon *** initial stabilization,minor rectal bleeding and abdominal pain persisted,leading to further diagnostic *** identified a neoplasm and potential perforation at the proximal *** exploratory laparotomy confirmed the presence of a hematoma and an aneurysm invading the rectal wall,necessitating partial rectal resection,intestinal anastomosis,and *** recovery was successful,with no further bleeding incidents and normal follow-up CT and colonoscopy results after six *** In cases of unusual gastrointestinal bleeding,it is necessary to consider vascular causes for effective diagnosis and intervention.

关键词： Iliac artery aneurysm Hematoma Rectum Hematochezia Case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

稀土激活的荧光热增强材料研究进展

发光学报 2024年第3期45卷 383-398页

作者：陈瑞刘瑞王鹏飞林航程遥王元生福州大学化学学院福建福州350108 中国科学院福建物质结构研究所中国科学院功能纳米材料结构设计与组装重点实验室福建福州350002 中国科学院大学福建学院福建福州350002

自从尺寸依赖的上转换荧光热增强现象在稀土激活的纳米荧光材料中被发现以来,开发具有显著荧光热增强效应的稀土荧光材料俨然成为了一个研究热点。近期的探索发现荧光热增强效应在非纳米尺度稀土荧光材料体系以及非上转换发光过程中均... 详细信息

自从尺寸依赖的上转换荧光热增强现象在稀土激活的纳米荧光材料中被发现以来,开发具有显著荧光热增强效应的稀土荧光材料俨然成为了一个研究热点。近期的探索发现荧光热增强效应在非纳米尺度稀土荧光材料体系以及非上转换发光过程中均可实现,这进一步拓展了这一有趣光学现象的应用场景。本文总结和归纳了稀土激活荧光热增强材料的最新研究进展,概述了所提出的几类机理以及稀土荧光热增强材料的潜在应用场景,并展望了该类材料的研究发展方向。

关键词：稀土激活发光材料荧光热增强纳米材料上转换发光

WavEnhancer: Unifying Wavelet and Transformer for Image Enhancement

在线全文

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2024年第2期39卷 336-345页

作者：李梓诺陈绪行郭淑娜王书强潘治文 Department of Computer and Information Science University of MacaoMacao 999078China Research Center for Biomedical Information Technology Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Image enhancement is a widely used technique in digital image processing that aims to improve image aesthetics and visual quality. However, traditional methods of enhancement based on pixel-level or global-level modifications have limited effectiveness. Recently, as learning-based techniques gain popularity, various studies are now focusing on utilizing networks for image enhancement. However, these techniques often fail to optimize image frequency domains. This study addresses this gap by introducing a transformer-based model for improving images in the wavelet domain. The proposed model refines various frequency bands of an image and prioritizes local details and high-level features. Consequently, the proposed technique produces superior enhancement results. The proposed model’s performance was assessed through comprehensive benchmark evaluations, and the results suggest it outperforms the state-of-the-art techniques.

关键词： transformer wavelet transform image enhancement

Neoadjuvant nivolumab with or without platinum-doublet chemotherapy based on PD-L1 expression in resectable NSCLC(CTONG1804):a multicenter open-label phase II study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第1期9卷 249-258页

作者： Si-Yang Liu Song Dong Xue-Ning Yang Ri-qiang Liao Ben-Yuan Jiang Qun Wang Xiao-Song Ben Gui-Bin Qiao Jun-Tao Lin Hong-Hong Yan Li-Xu Yan qiang Nie Hai-Yan Tu Bin-Chao Wang Jin-Ji Yang Qing Zhou Hong-rui Li Ke Liu Wendy Wu Si-Yang Maggie Liu Wen-Zhao Zhong Yi-Long Wu Guangdong Lung Cancer Institute Guangdong Provincial Key Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Thoracic Surgery Zhongshan HospitalFudan UniversityShanghaiChina Department of Thoracic Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Pathology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Fujian Key Laboratory of Advanced Technology for Cancer Screening and Early Diagnosis FuzhouChina Berry Oncology Corporation FuzhouChina Chinese Thoracic Oncology Group(CTONG) GuangzhouChina Department of Hematology The First Affiliated HospitalJinan UniversityGuangzhouChina

This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 *** patients exhibited resectable clinical stage IIA–IIIB(AJCC 8th edition)NSCLC without EGFR/ALK *** received either mono-nivolumab(N)or nivolumab+nabpaclitaxel+carboplatin(N/C)for three cycles based on PD-L1 *** primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DNA(ctDNA)status were correlated with pCR and ***-two patients were enrolled,with 46 undergoing *** MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in N and N/C groups,***(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant *** with post-neoadjuvant ctDNA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDNA–***+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDNA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(NCT04015778).

关键词： chemotherapy NSCLC treatment

New role of platelets in schizophrenia:predicting drug response

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

General Psychiatry 2024年第2期37卷 197-206页

作者： Yamin Zhang Yanghao Zheng Peiyan Ni Sugai Liang Xiaojing Li Hua Yu Wei Wei Xueyu Qi Xueli Yu rui Xue Liansheng Zhao Wei Deng qiang Wang Wanjun Guo Tao Li Department of Neurobiology Zhejiang University School of Medicine Affiliated Mental Health Centre&Hangzhou Seventh People's HospitalHangzhouZhejiangChina Liangzhu Laboratory Zhejiang University MOE Frontier Science Center for Brain Science and Brain Machine IntegrationHangzhouZhejiangChina Mental Health Center and Psychiatric Laboratory West China Hospital of Sichuan UniversityChengduSichuanChina

Background Elevated platelet count(PLTc)is associated with first-episode schizophrenia and adverse outcomes in individuals with precursory ***,the impact of antipsychotic medications on PLTc and its association with symptom improvement remain *** We aimed to investigate changes in PLTc levels following antipsychotic treatment and assess whether PLTc can predict antipsychotic responses and metabolic changes after accounting for other related *** A total of 2985 patients with schizophrenia were randomised into seven *** group received one of seven antipsychotic treatments and was assessed at 2,4 and 6 *** symptoms were evaluated using the positive and negative syndrome scale(PANSS).Additionally,we measured blood cell counts and metabolic parameters,such as blood *** measures analysis of variance was used to examine the effect of antipsychotics on PLTc changes,while structural equation modelling was used to assess the predictive value of PLTc on PANSS *** PLTc significantly increased in patients treated with aripiprazole(F=6.00,p=0.003),ziprasidone(F=7.10,phange in the PANSS-negative subscale ***,higher baseline PLTc was observed in individuals with less metabolic change,although this association was no longer significant after accounting for baseline metabolic *** Platelet parameters,specifically PLTc,are influenced by antipsychotic treatment and could potentially elevate the risk of venous thromboembolism in patients with *** PLTc levels and associated factors may impede symptom improvement by

关键词： schizophrenia assessed treatment

Gas microchannel plate-pixel detector for X-ray polarimetry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第5期35卷 60-73页

作者： Huan-Bo Feng Hong-Bang Liu Dong Wang Zi-Li Li Shu-Lin Liu Qian Liu hang-Zhou Li Bin-Long Wang Yan-Jun Xie Zong-Wang Fan Hui Wang Ran Chen Di-Fan Yi rui-Ting Ma Fei Xie Bo Peng Xiang-Ming Sun Jin Li En-Wei Liang Present Address:Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Science Huzhou UniversityHuzhou 313000China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China School of Physical Science University of Chinese Academy of SciencesBeijing 100049China The 13th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050057China

POLAR-2 is a gamma-ray burst(GRB)polarimeter that is designed to study the polarization in GRB radiation emissions,aiming to improve our knowledge of related ***-2 is expected to utilize an on-board polarimeter that is sensitive to soft X-rays(2-10 keV),called low-energy polarization *** have developed a new soft X-ray polari-zation detector prototype based on gas microchannel plates(GMCPs)and pixel chips(Topmetal).The GMCPs have bulk resistance,which prevents charging-up effects and ensures gain stability during *** detector is composed of low outgassing materials and is gas-sealed using a laser welding technique,ensuring long-term stability.A modulation factor of 41.28%±0.64% is obtained for a 4.5 keV polarized X-ray beam.A residual modulation of 1.96%±0.58% at 5.9 keV is observed for the entire sensitive area.

关键词： X-ray polarimetry Gas microchannel plate-pixel detector Gamma-ray bursts

震后RC桥墩竖向承载力最优工程需求参数的选取方法

在线全文

学校读者我要写书评

暂无评论

土木工程学报 2024年第4期57卷 59-70页

作者：董慧慧马睿韩强杜修力北京工业大学桥梁工程安全与韧性全国重点实验室北京100124

桥墩结构的震后竖向承载力是评估梁式桥梁震后通行功能的重要指标,但其难以测量。为了快速定量地评估桥梁结构的震后通行能力,对评估梁式桥梁结构震后竖向承载力的最优工程需求参数(EDP)进行了系统地研究。首先选取与墩柱残余侧移和损... 详细信息

桥墩结构的震后竖向承载力是评估梁式桥梁震后通行功能的重要指标,但其难以测量。为了快速定量地评估桥梁结构的震后通行能力,对评估梁式桥梁结构震后竖向承载力的最优工程需求参数(EDP)进行了系统地研究。首先选取与墩柱残余侧移和损伤相关的5个EDPs,通过对考虑了材料不确定性的RC桥墩进行Pushover分析和动力时程分析得到5个EDPs,进一步对震后的桥墩进行Pushdown分析获取震后竖向承载力。然后采用回归模型对所选EDPs与震后竖向承载力损失比的关系曲线进行回归分析,选取竖向承载力损失比关系曲线的最优回归模型为在ln(x)-y坐标系中的正态累积函数模型,进一步通过最优EDP评价准则对评估竖向承载力损失比的5个EDPs进行评价分析。评价结果表明:当考虑震后可计算性时,峰值侧移率最优;当考虑震后可测性时,残余侧移率最优;当考虑余震时,改进的Park-Ang指标最优。通过选取的最优EDP可以建立桥梁结构功能指标与抗震性能指标之间的联系,为进一步发展和完善桥梁结构的抗震韧性评估和设计提供参考。

关键词：桥墩震后通行能力竖向承载力损失最优EDP 残余侧移率损伤程度

同方期刊数据库