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Chinese Journal of Polymer Science 2024年第8期42卷 1085-1092页

作者： Hong-Yu Ji Hong-Liang Mu Chun-feng tang Yu-Xing Zhang Yue Chi Zhong-Bao Jian Key Laboratory of Advanced Structural Materials Ministry of EducationSchool of Materials Science and EngineeringChangchun University of TechnologyChangchun 130012China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Olefin polymerization is one of the most im portant chemical reactions in *** work presents a strategy that emphasizes the synergistic meta/poro-steric hindrance of N-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel *** nickel(Ⅱ)catalysts exhibit exceptional thermostability,ranging from 30℃to 130℃,demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights(3-341 kg·mol^(-1))and controlled polymer branch density(2-102 brs/1000C).The preferred catalyst Ni3 with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90℃.Notably,Ni3 exhibits an impressive tolerance of 110℃and can withstand even the challenging polymerization temperature of 130℃,leading to the production of polyethylene wax and ***,functionalized polyethylene is produced.

关键词： Polyolefin Salicylaldiminato ligand Nickel catalyst Oil Wax

Diagnosis and treatment of biliary mucinous cystic neoplasms: A single-center experience

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Hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 495-501页

作者： Jun-Jun Jia Ya-Fen Cheng Mei-Bao feng Li Liu Ming-Qi Shuai Xiao-Dong Shen Xiao-feng tang Shu-Sen Zheng Division of Hepatobiliary and Pancreatic Surgery Department of Surgerythe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of International Healthcare Center the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Pathology the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Library the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China

Background: Biliary mucinous cystic neoplasms(BMCNs) are rare hepatobiliary cystic tumors, which can be divided into noninvasive and invasive types. This study aimed to investigate the diagnosis, treatment, and prognosis of BMCNs in a large single center. Methods: We analyzed 49 patients with BMCNs confirmed by postoperative pathology at the First Afflliated Hospital, Zhejiang University School of Medicine between January 2007 and December 2021. Results: Among the 49 patients, 37 were female(75.5%), and the average age was 57.04 years. Common symptoms included abdominal discomfort, jaundice and fever, while 22 patients(44.9%) had no symptoms. Serum carbohydrate antigen(CA) 19-9 and CA125 concentrations were elevated in 34.8% and 19.6% of patients, respectively. Forty-eight patients had tumors in the intrahepatic bile ducts and only one had a tumor in the extrahepatic bile duct. Forty-eight patients with noninvasive intrahepatic BMCNs were further analyzed in terms of pathological features: 34(70.8%) had low-grade intraepithelial neoplasms(LGINs), and 14(29.2%) had high-grade intraepithelial neoplasms(HGINs). The potential immunohistochemical markers of BMCNs were cytokeratin(CK) 19, CK7, estrogen receptor and progesterone receptor. Follow-up data for 37 patients with intrahepatic BMCNs were obtained. The median overall survival(OS) of BMCNs was not reached. The longest survival time was 137 *** 5-and 10-year OS rates were 100% and 85.4%, respectively. The 5-and 10-year recurrence-free survival(RFS) rates were 93.9% and 80.2%, respectively. Conclusions: BMCNs are rare cystic neoplasms that commonly occur in middle-aged females. BMCNs can only be diagnosed and classified by postoperative pathology, as there are no specific clinical presentations, serological indicators or imaging modalities for preoperative diagnosis. Complete surgical resection is necessary for BMCNs, and the postoperative prognosis is favorable.

关键词： Biliary mucinous cystic neoplasms Low-grade intraepithelial neoplasms High-grade intraepithelial neoplasms Overall survival Recurrence-free survival

New Benthic Fossils from the Late Ediacaran Strata of Southwestern China

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Acta Geologica Sinica(English Edition) 2024年第2期98卷 311-323页

作者： LIU Junping LI Ming tang feng ZHAO Jiangtai SONG Sicun ZHOU Ying SONG Xiaohan REN Liudong School of Earth Science and Resources China University of GeosciencesBeijing 10083China Yunnan Institute of Geological Survey Kunming 650216China Chinese Academy of Geological Sciences Beijing 10037China Key Laboratory for Stratigraphy and Paleontology MNRCBeijing 10037China School of Earth Science and Engineering Nanjing UniversityNanjing 210093China Department of Earth Sciences University College LondonLondon WC1E 6BTU.K. CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdaoShandong 266071China Institute of Geology Chinese Academy of Geological SciencesBeijing 10037China

The Jiangchuan Biota from the Jiucheng Member(Mb.)of the Dengying Formation(Fm.),discovered in Jiangchuan,eastern Yunnan,China,is marked by copious macrofossils at the apex of the Ediacaran *** fauna features benthic algae with varied holdfasts and other fossils of indeterminate taxonomic affinity and is compositionally unique compared to the Shibantan and Gaojiashan biotas of the Dengying *** the Miaohe and Wenghui biotas of the Doushantuo Fm.,elsewhere in *** novel benthic saccular macroalgal fossil,named here Houjiashania yuxiensis *** ***.,from the Jiangchuan Biota is based on fossils that are sausage-shaped,elongate,tubular,ranging from 0.3 to 4 cm in length,and up to 0.8 cm in *** terminus is blunt and rounded to an obtuse angle,the other is bent with a spread-out surface resembling a holdfast,suggesting a three-dimensional ***,stipe-shaped outgrowths,likely vestiges of sessile saccular life forms,are prevalent in macroalgal fossils of analogous size and shape,as well as present brown algae Scytosiphonaceae,such as Colpomenia and *** new findings augment the diversity of benthic algae,such as those known from the Early Neoproterozoic Longfengshan Biota in North *** benthic algal macrofossils in the Jiucheng *** to knowledge of Late Ediacaran metaphyte diversification and offer more clues about the evolutionary positioning of primitive *** co-occurrence of numerous planktonic and benthic multicellular algae and planktonic microbes might have facilitated ecologically the more extensive later Cambrian explosion evidenced by the Chengjiang Biota in Yunnan.

关键词： paleophytology benthic saccular algae algal evolution Neoproterozoic Jiucheng Member Jiangchuan Biota Yunnan Province

Preparation of tungsten-particle-reinforced Zr-based bulk metallic glass composites by two-step spark plasma sintering:microstructure evolution,densification mechanism and mechanical properties

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Rare Metals 2024年第4期43卷 1793-1808页

作者： Yun-Fei Ma Pan Gong Mao Zhang Hui-EHu Zhen Peng Xiao Xu Xin Wang Mehdi Malekan Xue-feng tang Lei Deng Jun-Song Jin Xin-Yun Wang State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China Research Institute of Huazhong University of Science and Technology in Shenzhen Shenzhen518057China Department of Chemistry and Materials Naval University of EngineeringWuhan430032China School of Materials Science and Engineering Jiangsu UniversityZhenjiang212013China College of Machine Shanghai Dianji UniversityShanghai201306China School of Metallurgy and Materials Engineering College of EngineeringUniversity of TehranTehran 11155-4563Iran

A new two-step spark plasma sintering(TSS)process with low-temperature pre-sintering and high-temperature final sintering has been successfully applied to prepare the tungsten-particle(Wp)-reinforced bulk metallic glass composites(Wp/BMGCs).Compared to normal spark plasma sintering(NS),the densification rate and relative density of Wp/BMGCs can be improved by selecting TSS with appropriate sintering pressure in the low temperature pre-sintering ***,the compressive strength and plastic strain of 30%Wp/BMGCs prepared by TSS are both higher than those of the samples prepared by *** TSS process can significantly enhance the compressive strength of 30%Wp/BMGCs by 12%and remarkably increase the plastic strain by 50%,while the trend is completely opposite for 50%Wp/***-in situ experiments and finite element simulations reveal that uneven temperature distribution among particles during low-temperature pre-sintering causes local overheating at contact points between particles,accelerating formation of sintering neck between particles and plastic deformation of *** the volume fraction of Wp is low,TSS can improve the interface bonding between particles by increasing the number of sintering *** makes the fracture mode of Wp/BMGCs being predominantly transgranular ***,as the volume fraction of Wp increases,the adverse effects of Wp plastic deformation are becoming more and more *** aggregated Wp tends to form a solid"cage structure"that hinders the bonding between particles at the interface;correspondingly,the fracture behavior of Wp/BMGCs is mainly dominated by intergranular ***,reducing the sintering pressure during the low-temperature pre-sintering stage of TSS has been shown to effectively decrease plastic deformation in Wp,resulting in a higher degree of densification and better mechanical properties.

关键词： Bulk metallic glass composites Tungsten particle Two-step spark plasma sintering Densification mechanism Mechanical properties

First SHRIMP zircon U-Pb dating constraints for the Ediacaran Wenghui Biota

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Journal of Earth Science 2024年

作者： Mingsheng Zhao feng tang Giovanni Mussini Yulan Li Heng Zhang Jianshu Chen Linzhi Gao Department of Earth Sciences， University of Cambridge State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology， CAS) 111 Geological Brigade， Guizhou Bureau of Geology and Mineral Resources College of Paleontology， Shenyang Normal University Institute of Geology， Chinese Academy of Geological Sciences Guizhou Geological Survey

The Ediacaran period records a significant turning point in the evolution of life on Earth， witnessing the rise to ecological dominance of macroscopic tissue-grade organisms. The Wenghui biota from the Doushantuo Formation of South China hosts abundant multicellular algal macrofossils and problematica， some of which might be closely related to taxa from classic late Ediacaran assemblages from South Australia and the White Sea biota of Russia. However， a lack of well-resolved isotopic age estimates has hampered efforts to constrain the timing of appearance of the Wenghui biota， obfuscating its significance to our understanding of Ediacaran macroevolution in the aftermath of the Snowball Earth events. Here， we present the first SHRIMP zircon U-Pb dating results for samples obtained from a laminated tuff ash layer at the base of the Wenghui biota in the Doushantuo Formation， Jiangkou County， Tongren City， Guizhou Province， China. Our analyses yield an age of 595.4 ± 5.3 Ma for the first appearance of Wenghui biota， suggesting that its appearance postdated that of the Lantian- and Weng’an biotas， but preceded that of the Miaohe biota. These newly obtained age proxies offer an independent test of previous isotopic estimates for the age of the Wenghui biota， providing new chronostratigraphic evidence to map the succession of Ediacaran fossil assemblages on the Yangtze Platform during the Doushantuo interval. These data suggest that the Lantian， Weng’an， Wenghui， and Miaohe biotas may record a sequence of biotic assemblages attesting to successive phases in the radiation of Ediacaran macroscopic organisms， particularly macroalgae.

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Exploring reservoir computing:Implementation via double stochastic nanowire networks

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Chinese Physics B 2024年第3期33卷 572-582页

作者：唐健峰夏磊李广隶付军段书凯王丽丹 College of Artificial Intelligence Southwest UniversityChongqing 400715China Brain-inspired Computing & Intelligent Control of Chongqing Key Laboratory Chongqing 400715China National & Local Joint Engineering Laboratory of Intelligent Transmission and Control Technology Chongqing 400715China Chongqing Brain Science Collaborative Innovation Center Chongqing 400715China Key Laboratory of Luminescence Analysis and Molecular Sensing Ministry of EducationSouthwest UniversityChongqing 400715China State Key Laboratory of Intelligent Vehicle Safety Technology Chongqing 400715China

Neuromorphic computing,inspired by the human brain,uses memristor devices for complex *** studies show that self-organizing random nanowires can implement neuromorphic information processing,enabling data *** paper presents a model based on these nanowire networks,with an improved conductance variation *** suggest using these networks for temporal information processing via a reservoir computing scheme and propose an efficient data encoding method using voltage *** nanowire network layer generates dynamic behaviors for pulse voltages,allowing time series prediction *** experiment uses a double stochastic nanowire network architecture for processing multiple input signals,outperforming traditional reservoir computing in terms of fewer nodes,enriched dynamics and improved prediction *** results confirm the high accuracy of this architecture on multiple real-time series datasets,making neuromorphic nanowire networks promising for physical implementation of reservoir computing.

关键词： double-layer stochastic(DS)nanowire network architecture neuromorphic computation nanowire network reservoir computing time series prediction

新时代党建引领城市精细化治理的机制建构与优化路径

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内蒙古社会科学 2024年第4期45卷 2+62-71页

作者：唐皇凤徐植武汉大学马克思主义学院

作为长期执政的马克思主义政党，中国共产党主导并直接参与城市治理，在中国特色现代化城市治理体系中居于关键性枢纽位置。我国城市治理体系具有鲜明的政党主导特征，中国共产党统领并协同多元治理主体参与城市精细化治理实践，党建引... 详细信息

作为长期执政的马克思主义政党，中国共产党主导并直接参与城市治理，在中国特色现代化城市治理体系中居于关键性枢纽位置。我国城市治理体系具有鲜明的政党主导特征，中国共产党统领并协同多元治理主体参与城市精细化治理实践，党建引领城市精细化治理成为新时代城市治理现代化的新范式。党建引领城市精细化治理的机制建构是在适应、满足城市多元主体需求的基础上，通过分类指导、精准施策实现各利益相关者之间的善意互动、民主协商和利益均衡，通过理念牵引、组织延展、功能激活三大机制实现其各项目标，是一个马克思主义执政党通过全面领导、资源整合、社会动员等制度化方式推动党组织和党员参与城市治理，激活社会资本、动员各方力量构建社会治理共同体的复杂过程。在全面建设社会主义现代化国家的历史新征程中，强化党组织的服务理念、推进党建引领与居民自治的有机平衡、全面激活党组织的多维功能，持续完善党建引领城市精细化治理的体制机制，是我国城市治理现代化的必由之路。

关键词：党建引领精细化治理机制建构优化路径

中国地方金融监管体制改革的历史进程与优化进路

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湘潭大学学报(哲学社会科学版) 2024年第2期48卷 27-34+40页

作者：唐皇凤崔洋武汉大学马克思主义学院武汉大学政治与公共管理学院

在社会主义市场经济条件下，实施高质量的金融监管是中国经济健康可持续发展的重要秘诀，地方金融监管体制改革则是构建现代化经济体系的基础性、战略性工程。新中国成立以来，我国地方金融监管体制经历了监管与业务混同、地方参与监管... 详细信息

在社会主义市场经济条件下，实施高质量的金融监管是中国经济健康可持续发展的重要秘诀，地方金融监管体制改革则是构建现代化经济体系的基础性、战略性工程。新中国成立以来，我国地方金融监管体制经历了监管与业务混同、地方参与监管、中央单层监管和央地分层监管等阶段。面对地方金融监管权责划分不够明确、加强监管与推动经济发展难以平衡、地方金融监管的法律保障尚不健全等现实困境，新时代新征程的地方金融监管体制改革需要聚焦于建立党对金融工作的统一领导体制、加强地方金融监管领域法治建设、优化地方金融监管部门职责和健全以中央金融管理部门地方派出机构为主的地方金融监管体制，重点解决地方金融委员会办事机构设置、地方金融监管部门非监管职能划转和完善市县两级地方金融监管部门管理体制的问题。

关键词：地方金融监管体制权责划分改革进路

累及甲状腺的朗格汉斯细胞组织细胞增生症的临床病理分析

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复旦学报（医学版） 2024年第1期51卷 89-95页

作者：金哲仵倩林岚唐峰复旦大学附属眼耳鼻喉科医院病理科上海200031 复旦大学附属华山医院病理科上海200040

目的探讨累及甲状腺的朗格汉斯细胞组织细胞增生症(Langerhans cell histiocytosis,LCH)的临床病理学特征。方法回顾性分析复旦大学附属华山医院2017年6月至2022年11月期间5例甲状腺受累的LCH患者的临床信息、形态学特征、免疫组化特点... 详细信息

目的探讨累及甲状腺的朗格汉斯细胞组织细胞增生症(Langerhans cell histiocytosis,LCH)的临床病理学特征。方法回顾性分析复旦大学附属华山医院2017年6月至2022年11月期间5例甲状腺受累的LCH患者的临床信息、形态学特征、免疫组化特点及分子学检测结果,并结合相关文献进行讨论。结果男性1例,女性4例,29~57岁,中位年龄31岁,超声均表现为甲状腺低弱回声结节。形态学上均显示大量朗格汉斯细胞,细胞含有丰富的嗜酸性胞质,细胞核呈卵圆形,或有纵向核沟,呈咖啡豆样,核仁不明显,伴有大量淋巴细胞、嗜酸性粒细胞浸润。免疫组化显示:5例肿瘤细胞CD1α、S100、Langerin均阳性,Ki67增殖指数均大于15%,其中最高达70%。经分子检测的4例病例均未检出BRAF V600E和MAP2K1基因突变。结论甲状腺LCH罕见,多数病例为多系统LCH累及甲状腺,常表现为甲状腺无痛性肿大,治疗方法常为外科手术切除。病理表现为大量朗格汉斯细胞及嗜酸性粒细胞弥漫成片,伴有正常甲状腺滤泡结构破坏。分子学改变上存在BRAF V600E和MAP2K1低突变率的特点。

关键词：朗格汉斯细胞组织细胞增生症(LCH) 甲状腺疾病病理学

维普期刊数据库博看期刊

基于CiteSpace的熔融沉积技术研究可视化分析

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现代信息科技 2024年第18期8卷 166-171页

作者：唐锋湖南工业职业技术学院湖南长沙410208 湖南省精密零件数控加工工艺数字化工程技术研究中心湖南长沙410000

熔融沉积技术因其原料来源广泛、制造成本低等优势而被人们广泛应用,国内学者对其进行了多方位的研究。为分析熔融沉积技术的研究动态和现状,文章以目前知网数据库收录的,主题为“熔融沉积”的1815篇文献为研究对象,利用CiteSpace文献... 详细信息

熔融沉积技术因其原料来源广泛、制造成本低等优势而被人们广泛应用,国内学者对其进行了多方位的研究。为分析熔融沉积技术的研究动态和现状,文章以目前知网数据库收录的,主题为“熔融沉积”的1815篇文献为研究对象,利用CiteSpace文献计量可视化方法,通过定性与定量分析相结合的方式,探究熔融沉积的发展过程、研究趋势。研究发现,数值模拟、力学性能研究是近年来熔融沉积技术研究的热点。

关键词： CiteSpace 熔融沉积可视化分析