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碳纤维边角料增强TPU纳米复合材料的制备与电热性能

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复合材料学报 2024年第4期41卷 1862-1869页

作者：崔晓凤郑茂林张娜黄明高国利郑州大学、材料成型及模具技术教育部重点实验室橡塑模具国家工程研究中心郑州450002 深圳市银宝山新科技股份有限公司深圳518108

随着碳纤维(CF)需求量的增加,CF边角料急剧增多,造成了极大的资源浪费。为解决这一问题,采用抽滤法将CF边角料制备成短切碳纤维(sCF)毡,以碳纳米管(CNT)作为二次填料,通过真空热压工艺制备了CF边角料增强热塑性聚氨酯(TPU)纳米复合电热... 详细信息

随着碳纤维(CF)需求量的增加,CF边角料急剧增多,造成了极大的资源浪费。为解决这一问题,采用抽滤法将CF边角料制备成短切碳纤维(sCF)毡,以碳纳米管(CNT)作为二次填料,通过真空热压工艺制备了CF边角料增强热塑性聚氨酯(TPU)纳米复合电热材料(CNTx-sCF/TPU)。通过sEM、TGA、DsC等对复合材料进行测试分析,探究了CNT的最佳浓度,研究了CNTx-sCF/TPU复合材料的力学性能和电热性能等。结果表明:采用克重为60 g/m2的sCF毡、CNT浓度为1.0 g/mL时制备的CNT1.0-sCF/TPU复合材料具有最高的电导率,达到417.84 s/m,与不添加CNT的sCF/TPU相比其电导率提高了34.78%;CNT1.0-sCF/TPU复合材料在3.5 V低电压下,240 s内即能达到约165℃的高温,具有优异电热性能,并具备电热温度可控、电热性能稳定等优点。

关键词：碳纤维聚氨酯碳纳米管复合材料电热性能力学性能

Clinicopathological features,psychological status,and prognosis of 33 patients with occult breast cancer

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World Journal of Psychiatry 2024年第1期14卷 76-87页

作者： Hong-Mei Wang ao-Yang Yu Lin-Lin Li Lu-Yao Ma Meng-Han Cao Yu-Le Yang Xiao-Bing Qin Juan-JuanTang Zheng-Xiang Han Department of Oncology The Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina Graduate school Xuzhou Medical UniversityXuzhou 221004Jiangsu ProvinceChina Department of Pathology The Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina

BACKGROUND Occult breast cancer(OBC)has traditionally been considered to be a carcinoma of unknown primary origin with a favorable prognosis and can be treated as stage II-III breast *** to the small number of cases and limited clinical experience,treatments vary greatly around the world and no standardized treatment has yet been *** To investigate the clinicopathological features,psychological status and prognostic features of patients with *** The clinicopathological data of 33 OBC patients diagnosed and treated in the Affiliated Hospital of Xuzhou Medical University and Xuzhou Central Hospital from November 2015 to November 2022 were retrospectively *** psychological status of OBC patients was evaluated by the self-rating Anxiety scale and self-rating Depression ***’emotions,stress perception and psychological resilience were evaluated by the Positive and Negative Affect schedule,the Chinese Perceived stress scale,and the Connor-Davidson Resilience scale(CD-RIsC),*** survival was calculated using the Kaplan-Meier method,and survival curves were plotted for analysis with the log-rank *** and multivariate survival analyses were performed using the Cox regression *** The 33 OBC patients included 32 females and 1 *** the 33 patients,30(91%)had axillary tumors,3(9%)had a neck mass as the primary symptom;18(54.5%)had estrogen receptor-positive tumors,17(51.5%)had progesterone receptor-positive tumors,and 18(54.5%)had Her-2-positive tumors;24(72.7%)received surgical treatment,including 18 patients who underwent modified radical mastectomy,1 patient who underwent breast-conserving surgery plus axillary lymph node dissection(ALND),and 5 patients who underwent ALND alone;12 patients received preoperative neoadjuvant *** 30 patients developed anxiety and depression,with low positive affect scores and high negative affect scores,accompanied by a high stress level and poor psycho

关键词： Occult breast cancer Breast cancer Perceived stress scale Axillary lymph node dissection

主题图技术在徽州文书档案信息组织中的应用研究——以土地买卖契约档案为例

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档案学研究 2024年第3期 104-111页

作者：孙奥戴旸中山大学信息管理学院广州510006 安徽大学管理学院合肥230039

徽州文书档案现有的信息组织方式存在信息资源分散、难以检索、缺乏语义关联等问题,影响了对其的开发利用。本文基于主题图技术对徽州文书档案信息进行组织,以土地买卖契约档案为例构建了主题图模型,完成了主题图的生成、展示、检索和浏... 详细信息

徽州文书档案现有的信息组织方式存在信息资源分散、难以检索、缺乏语义关联等问题,影响了对其的开发利用。本文基于主题图技术对徽州文书档案信息进行组织,以土地买卖契约档案为例构建了主题图模型,完成了主题图的生成、展示、检索和浏览,并就生成结果进行了分析。主题图技术的应用为徽州文书档案的开发利用提供了一种新的思路和方法,使徽州文书档案信息的呈现更加清晰、完整和易于理解,能够满足不同用户的需求,同时有助于更好地挖掘徽州文书档案信息,传播徽州历史文化。

关键词：主题图技术徽州文书档案土地买卖契约档案信息组织

shared genetic architecture highlights the bidirectional association between major depressive disorder and fracture risk

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General Psychiatry 2024年第3期37卷 352-363页

作者： Pianpian Zhao Zhimin Ying Chengda Yuan Haisheng Zhang ao Dong Jianguo Tao Xiangjiao Yi Mengyuan Yang Wen Jin Weiliang Tian David Karasik Geng Tian Houfeng Zheng The Affiliated Hangzhou First People’s Hospital School of MedicineWestlake UniversityHangzhouZhejiangChina Westlake Laboratory of Life sciences and Biomedicine HangzhouZhejiangChina Diseases&Population(DaP)Geninfo Lab School of Life SciencesWestlake UniversityHangzhouZhejiangChina Institute of Basic Medical sciences Westlake Institute for Advanced StudyHangzhouZhejiangChina Department of Orthopedic surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina Department of Dermatology Hangzhou Hospital of Traditional Chinese MedicineHangzhouZhejiangChina Department of Global statistics Eli Lilly and CompanyBranchburgNew JerseyUSA Azrieli Faculty of Medicine Bar-Ilan UniversitySafedIsrael Binzhou Medical University YantaiShandongChina

Background There is limited evidence suggesting that osteoporosis might exacerbate depressive symptoms,while more studies demonstrate that depression negatively affects bone density and increases fracture *** To explore the relationship between major depressive disorder(MDD)and fracture *** We conducted a nested case-control analysis(32670 patients with fracture and 397017 individuals without fracture)and a matched cohort analysis(16496 patients with MDD and 435492 individuals without MDD)in the same prospective UK Biobank data ***,we investigated the shared genetic architecture between MDD and fracture with linkage disequilibrium score regression and the MiXeR statistical *** used the conditional/conjunctional false discovery rate approach to identify the specific shared *** calculated the weighted genetic risk score for individuals in the UK Biobank and logistic regression was used to confirm the association observed in the prospective *** We found that MDD was associated with a 14%increase in fracture risk(hazard ratio(HR)1.14,95%CI 1.14 to 1.15,psted case-control analysis,while fracture was associated with a 72%increase in MDD risk(HR 1.72,95%CI 1.64 to 1.79,psis,suggesting a longitudinal and bidirectional ***,genetic summary data suggested a genetic overlap between MDD and ***,we identified four shared genomic loci,with the top signal(rs7554101)near *** protein encoded by sGIP1 is involved in cannabinoid receptor type 1 *** found that genetically predicted MDD was associated with a higher risk of fracture and vice *** addition,we found that the higher expression level of sGIP1 in the spinal cord and muscle was associated with an increased risk of fracture and *** The genetic pleiotropy between MDD and fracture highlights the bidirectional association observed in the epidemiological *** shared ge

关键词： fracture matched osteoporosis

A New Method for Quarterly-Data Predictions Based on the Extended Grey Model GM(1,1,exp×sin,exp×cos)and Its Application in China's Quarterly GDP Prediction

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Journal of systems science and Information 2023年第1期11卷 109-123页

作者： maolin CHENG Bin LIU school of Mathematical sciences Suzhou University of Science and TechnologySuzhou 215009China school of Business Suzhou University of Science and TechnologySuzhou 215009China

Grey prediction is vital in statistical prediction with wide ***,most grey prediction methods focus on annual predictions of the monotonic time series instead of the seasonal time *** paper uses the extended model of the grey GM(1,1)model to predict the seasonal time *** improvements have been made in two aspects to improve the prediction accuracy of the model.1)We introduce seasonal multiple factors to transform the original time series,which improves the adaptability of the seasonal data to the *** transformed series conforms to the law presented by the model.2)The seasonal data are in superimposed sine and cosine fluctuations with ***,the paper extends the grey action quantity of the traditional GM(1,1)*** newly extended grey model is called the GM(1,1,exp×sin,exp×cos)model,which is provided with the parameter optimization methods and time response *** to the proposed modeling method,we establish a GM(1,1,exp×sin,exp×cos)model for China's quarterly gross domestic product(GDP)with high accuracy.

关键词： GM(1,1,exp×sin,exp×cos)model parameter estimation time-response equation prediction accuracy

文学创新与文化建构——论汤亭亭的跨语言写作

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中国文学研究 2024年第1期 191-199页

作者：钟家傲湖南大学文学院湖南长沙410082

汤亭亭的文学性与文化性特色在其跨语言写作中有着充分展示。她将粤方言、标准汉语及中式的洋泾浜英语纳入了自己的文学语言之中,有机地达成了英语与汉语两种语言的跨语言写作。她的异质语言文字的整合运用写作实践中蕴含着多重文化指... 详细信息

汤亭亭的文学性与文化性特色在其跨语言写作中有着充分展示。她将粤方言、标准汉语及中式的洋泾浜英语纳入了自己的文学语言之中,有机地达成了英语与汉语两种语言的跨语言写作。她的异质语言文字的整合运用写作实践中蕴含着多重文化指涉。借助跨语言写作,汤亭亭在一定程度上实现了她创作另类诗化小说的理想。以汤亭亭为代表的华裔作者在跨语言写作中结合了中西文化,较好地实现了异质文化的融合。这既是文学创新,也是文化建构,从侧面展现了中国文化和思想在异域的极强生命力,具有较大的理论价值和现实意义。

关键词：汤亭亭文学语言跨语言写作中国文化文化建构

The autophagy protein Atg9 functions in glia and contributes to parkinsonian symptoms in a Drosophila model of Parkinson’s disease

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Neural Regeneration Research 2024年第5期19卷 1150-1155页

作者： shuanglong Yi Linfang Wang Margaret s.Ho shiping Zhang school of Life science and Technology ShanghaiTech UniversityShanghaiChina College of Life sciences University of Chinese Academy of SciencesBeijingChina

Parkinson’s disease is a progressive neurodegenerative disease characterized by motor deficits,dopaminergic neuron loss,and brain accumulation ofα-synuclein aggregates called Lewy *** in protein degradation pathways,such as autophagy,has been demonstrated in neurons as a critical mechanism for eliminating protein aggregates in Parkinson’s ***,it is less well understood how protein aggregates are eliminated in glia,the other cell type in the *** the present study,we show that autophagy-related gene 9(Atg9),the only transmembrane protein in the autophagy machinery,is highly expressed in Drosophila glia from adult *** from immunostaining and live cell imaging analysis reveal that a portion of Atg9 localizes to the trans-Golgi network,autophagosomes,and lysosomes in ***9 is persistently in contact with these *** glial atg9 reduces the number of omegasomes and autophagosomes,and impairs autophagic substrate *** suggests that glial Atg9 participates in the early steps of autophagy,and hence the control of autophagic ***,loss of glial atg9 induces parkinsonian symptoms in Drosophila including progressive loss of dopaminergic neurons,locomotion deficits,and glial *** findings identify a functional role of Atg9 in glial autophagy and establish a potential link between glial autophagy and Parkinson’s *** results may provide new insights on the underlying mechanism of Parkinson’s disease.

关键词： Atg9 autophagy glia Parkinson’s disease

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语言引导的多粒度特征融合目标分割方法

北京航空航天大学学报 2024年第2期50卷 542-550页

作者：谭荃戈王蓉吴澳中国人民公安大学信息网络安全学院北京100091

语言引导的目标分割旨在将文本描述的目标与其所指代的实体进行匹配,从而实现对文本、实体之间关系的理解与指代目标的定位。该任务在信息抽取、文本分类、机器翻译等应用场景中具有重要的应用价值。基于Refvos模型提出一种语言引导的... 详细信息

语言引导的目标分割旨在将文本描述的目标与其所指代的实体进行匹配,从而实现对文本、实体之间关系的理解与指代目标的定位。该任务在信息抽取、文本分类、机器翻译等应用场景中具有重要的应用价值。基于Refvos模型提出一种语言引导的多粒度特征融合目标分割方法,能够对特定目标精准定位。利用swin Transformer和Bert网络,分别提取多粒度的视觉特征和文本特征,提高对整体与细节的表征能力;将文本特征分别与不同粒度视觉特征进行融合,通过语言引导增强特定目标表达;通过卷积长短期记忆网络对多粒度融合特征进行优化,在不同粒度特征间进行信息交流,得到更精细化的分割结果。在UNC、UNC+、G-Ref、ReferIt数据集上进行训练并测试所提方法。实验结果表明:相比Refvos,所提方法在UNC数据集的val、testB子集中IoU结果分别提升0.92%、4.1%,在UNC+数据集的val、testA、testB子集中IoU结果分别提升1.83%、0.63%、1.75%。所提方法在G-Ref、ReferIt数据集的IoU结果分别为40.16%和64.37%,达到前沿水平,证明所提方法的有效性与先进性。

关键词：目标分割指代分割特征融合跨模态文本理解

高水平对外开放能否促进企业绿色技术创新——基于自由贸易试验区建设的经验证据

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国际商务（对外经济贸易大学学报） 2024年第4期 71-88页

作者：别奥杨上广华东理工大学商学院上海200237

建设自由贸易试验区是中国推进更高水平对外开放格局实现的重要举措。本文基于2009—2021年A股上市公司数据,在识别出注册地位于自由贸易试验区内的企业基础上,运用多时点DID方法考察了自由贸易试验区建设对企业绿色技术创新的影响。研... 详细信息

建设自由贸易试验区是中国推进更高水平对外开放格局实现的重要举措。本文基于2009—2021年A股上市公司数据,在识别出注册地位于自由贸易试验区内的企业基础上,运用多时点DID方法考察了自由贸易试验区建设对企业绿色技术创新的影响。研究结果表明:自由贸易试验区建设能够显著促进企业绿色技术创新;自由贸易试验区建设通过降低企业制度性交易成本和缓解企业融资约束进而促进企业绿色技术创新;自由贸易试验区建设对企业绿色技术创新的促进作用在沿海自贸区企业、清洁型行业企业和国有企业中更为明显。研究结论有利于深化对自由贸易试验区建设的效果认识,为政府和企业如何抓住高水平开放契机实现绿色发展转型提供理论启示和经验证据。

关键词：自由贸易试验区绿色技术创新融资约束制度性交易成本