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浅埋无中导洞连拱隧道先行洞衬砌承担围岩荷载确定方法

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岩土力学 2024年第4期45卷 1170-1180页

作者：汤华姜成业邓琴毕钛俊秦雨樵中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室湖北武汉430071 中国科学院大学北京100049

不同于常规隧道衬砌结构,无中导洞连拱隧道先行洞衬砌施作稳定后还要受到邻近后行洞开挖的二次扰动,后行洞开挖对先行洞衬砌受力的影响不可忽视。依托杨家寨公路隧道工程,基于考虑了后行洞开挖影响的隧道围岩压力计算方法,结合现场监测... 详细信息

不同于常规隧道衬砌结构,无中导洞连拱隧道先行洞衬砌施作稳定后还要受到邻近后行洞开挖的二次扰动,后行洞开挖对先行洞衬砌受力的影响不可忽视。依托杨家寨公路隧道工程,基于考虑了后行洞开挖影响的隧道围岩压力计算方法,结合现场监测位移数据采用荷载-结构法进行位移反分析,提出了一种确定浅埋无中导洞连拱隧道先行洞衬砌承担围岩荷载的方法,最后和衬砌背后围岩荷载现场监测值进行对比验证。研究结果表明:后行洞开挖对先行洞衬砌承担围岩荷载的影响较为显著,监测点增长幅度均值高达142%;先行洞衬砌受力呈现“拱腰较小,拱顶及拱肩较大”的分布规律,且靠近后行洞一侧拱肩位置受力最大;通过现场监测位移反分析得到的先行洞衬砌受力结果和现场监测结果较为一致,论证了该方法的合理性和实用性,研究成果可为无中导洞连拱隧道结构设计提供参考。

关键词：荷载结构法无中导洞连拱隧道位移反分析衬砌受力

中国共产党领导中国式现代化的理论基点与推进机制

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山东大学学报（哲学社会科学版） 2024年第2期 12-20页

作者：张泰山东大学马克思主义学院济南250100

政党领导现代化国家建设是政党政治时代人类文明发展的基本特征。现代化的全球推进及其历史性变革催生了马克思主义政党,并引起了世界现代化类型的拓展,进而从根本上决定了政党领导作为马克思主义政党的价值目标,贯穿于以人的彻底解放... 详细信息

政党领导现代化国家建设是政党政治时代人类文明发展的基本特征。现代化的全球推进及其历史性变革催生了马克思主义政党,并引起了世界现代化类型的拓展,进而从根本上决定了政党领导作为马克思主义政党的价值目标,贯穿于以人的彻底解放与全面自由发展为根本指向的人类文明新形态的创造过程。中国共产党的领导是以中国式现代化全面推进中华民族伟大复兴的核心驱动、显著标识和前提保障。坚持和加强党对中国式现代化的领导,既关涉党的马克思主义政党属性、政党职能、政党权威以及政党文化等理论范畴,也需要构建由发展党内民主、实现党的领导法治化、完善中国特色新型政党制度、开发运用党的核心政治资源以及提升党的综合能力等价值要素构成的实践机制。

关键词：中国式现代化党的领导理论基点实践机制

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马克思拜物教思想演化的内生驱动研究

政治经济学评论 2024年第4期15卷 128-141页

作者：邰丽华中国政法大学

在批判与继承前人相关研究成果的基础上,马克思拜物教思想的创新具有内生性的特点,包含了抽象分析与具体研究紧密结合、形式探讨与本源揭示彼此呼应、提出和分析问题直至达成解决方案的有机统一。马克思突破了法学、历史、哲学和宗教等... 详细信息

在批判与继承前人相关研究成果的基础上,马克思拜物教思想的创新具有内生性的特点,包含了抽象分析与具体研究紧密结合、形式探讨与本源揭示彼此呼应、提出和分析问题直至达成解决方案的有机统一。马克思突破了法学、历史、哲学和宗教等研究范式的束缚,运用政治经济学的立场、观点和方法,对拜物教的思考由不成熟渐渐走向成熟,由表象层面逐步深入到问题的本质与核心,由零散化碎片式研讨直至形成系统性理论构建的全过程,彰显了马克思主义理论勇于创新不断超越自我的独特品质。马克思拜物教思想发展和演化的内生驱动,根源于他的政治经济学研究转向,反映了马克思主义理论的科学性与实践性的辩证统一,体现了未来社会主义模式的动态性、多样式与差异化,对深入推进中国特色社会主义改革与建设事业具有十分重要的启示与借鉴。

关键词：拜物教思想发展演化自我创新内生驱动现实意义

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胃食管反流的力学基础与外科治疗策略

中国实用外科杂志 2024年第4期44卷 403-407页

作者：陈双周太成李英儒曾兵中山大学附属第六医院普通外科(疝和腹壁外科)、广东省结直肠盆底疾病研究重点实验室、广州市黄埔区中六生物医学创新研究院广东广州510655

食管裂孔疝(HH)和胃食管反流病(GERD)为临床多发病,手术是其治愈的重要方法。生理性反流与生物进化的“反刍”活动可能具一定的关联性,基因组学研究可能为以后在分子水平防治GERD提供靶点。在力学角度上,胸腹腔的压力差、食管下括约肌(L... 详细信息

食管裂孔疝(HH)和胃食管反流病(GERD)为临床多发病,手术是其治愈的重要方法。生理性反流与生物进化的“反刍”活动可能具一定的关联性,基因组学研究可能为以后在分子水平防治GERD提供靶点。在力学角度上,胸腹腔的压力差、食管下括约肌(LES)松弛尤其是暂时性LES松弛(tLESR)的过度发生等均是导致病理性反流发生的力学基础。LES、膈肌脚、LES与膈肌脚的空间位置以及胃食管阀瓣(GEV)是抗反流的重要屏障。从力学角度分析,HH为一种“轴向疝”,轴向移位破坏了正常的抗反流机制,在时间上疾病可由轻至重逐步发展。HH手术无法改变tLESR,目的在于改变结构,重建抗反流结构关系,即:通过游离延长食管下端及LES长度、胃底折叠形成的折叠圈及胃内的GEV、“向心化”缝合形成的膈肌脚与LES互相重叠结构(coincide),构成一个暴露在腹腔内的稳定的抗反流系统,最终实现改善功能、治愈疾病。

关键词：食管裂孔疝胃食管反流病抗反流屏障力学外科策略

Flexible interdigitated layered framework with multiple accessible active sites for high-performance CH_(3)I capture

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Science China Chemistry 2024年第5期67卷 1569-1577页

作者： Bo tai Baoyu Li Linwei He Zhonglin Ma Shujing Lin Mingxing Zhang Junchang Chen Fuqi Wu Long Chen Xing Dai Fuyin Ma Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

The development of adsorbent materials for effective capture of radioactive iodomethane(CH_(3)I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH_(3)I. Here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH_(3)I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH_(3)I. A record-breaking CH_(3)I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH_(3)I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH_(3)I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated N atoms of pyrazine. Moreover, dynamic CH_(3)I uptake capacity potentially allows for the capture of CH_(3)I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

关键词： 2D interdigitated layered framework iodomethane dual-sites electrostatic interaction physisorption and chemisorption

First Trimester Preeclampsia Screening and Prevention:Perspective in Chinese Mainland

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Maternal-Fetal Medicine 2024年第2期6卷 84-91页

作者： Jiao Liu Yunyu Chen Sin Ting tai Long Nguyen-Hoang Kunping Li Jing Lin Xiaohong Lu Liona C.Poon Department of Obstetrics and Gynecology The Chinese University of Hong KongShatinHong Kong 999077China

Preeclampsia(PE),a multisystem disorder in pregnancy,is one of the leading causes of perinatal morbidity and mortality that poses financial and physical burdens *** PE with delivery attaining optimal screening *** rate of preterm PE can be reduced by 62%by using the FMF prediction model,followed by the administration of low-dose *** evidence has also demonstrated that metformin has the potential for preventing PE in patients at high-risk of the *** this article,we will summarize the existing literature on the different screening methods,different components of risk assessment,therapeutic interventions,and clinical implementation of the first trimester screening and prevention program for PE with specific considerations for Chinese mainland.

关键词： Preeclampsia Chinese population First trimester Screening Prevention

The germline genetics of mild-to-moderate penetrance:An intriguing role of PRAME in multiple carcinogenesis

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Genes & Diseases 2024年第3期11卷 7-10页

作者： Diaddin Hamdan Van tai Nguyen Justine Paris Christophe Leboeuf Morad El Bouchtaoui Marc Espie Anne Janin Geraldine Falgarone Melanie Di Benedetto Guithem Bousquet Universite de Paris Cite INSERMUMR_S942MASCOTParis F-75006France Hopital La Porte Verte Versailles F-78004France National Cancer Hospital Cancer Research and Clinical Trials CenterHaNoi100000VietNam AP-HP-Hopital Saint Louis Centre de Maladies du SeinParisF-75010France Universite Sorbonne Paris Nord Bobigny F-93000France AP-HP-Hopital Avicenne Unite de Medecine AmbulatoireBobigny F-93000France

Germline genetics of high penetrance such as BRCA genes,mutations might be sufficient for carcinogenesis,but this only explains fewer than 10%of *** assume that most cancers are the result of germline mutations of low to moderate penetrance,combined with acquired mutations due to external carcinogenic *** their accumulation over time,aging is associated with an increased risk of multiple cancer development in a given *** decades,germline genetics have been based on familial linkage studies enabling most high-penetrance genes to be *** recently,population-wide studies have led to the identification of considerable numbers of polymorphisms associated with cancer ***,most of them are of unknown functional value,thus limiting their translational application.

关键词： carcinogenesis BRCA linkage

Leptonic di-flavor and di-number violation processes at high energyμ^(±)μ^(±)colliders

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Chinese Physics C 2024年第4期48卷 34-50页

作者：杨金磊张肇西冯太傅 CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Physical Science and Technology Lanzhou UniversityLanzhou 730000China Department of Physics Hebei UniversityKey Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei ProvinceBaoding 071002China

The leptonic di-flavor violation (LFV) processes μ^(±)μ^(±)→e^(±)e^(±) and μ^(±)μ^(±)→τ^(±)τ^(±) and leptonic di-number violation (LNV) processes μ^(±)μ^(±)→W_(i)^(±)W_(j)^(±) (i,j=1,2) at same-sign high energy μ^(±)μ^(±) colliders are studied. The new physics (NP) factors that may play roles in these processes are highlighted by cataloging them into three types. Taking into account the experimental constraints, the processes at μ^(±)μ^(±) colliders are computed, and the results are presented properly. The results lead to the conclusion that observing the NP factors through the LFV and LNV processes at TeV-energy μ^(±)μ^(±) colliders has significant advantages that cannot be achieved elsewhere. Therefore, once the techniques for muon acceleration and collision are developed successfully, the option of building same-sign high energy muon colliders should be seriously considered.

关键词： μ^(±)μ^(±)collider neutral lepton Majorana components

Laser-rewritable room temperature phosphorescence based on in-situ polymerized tartaric acid

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Science China Chemistry 2024年第9期67卷 3029-3038页

作者： Tuo-Yu Zhou tai-Wen Li Hai-Fu Zhang Rui-Lin Chai Qian Zhao Penglin Zhang Guang-Yue Li Qian-Wen Wang Chang Li Yu Shu Zhi Fan Sheng-Hua Li College of Chemical Engineering and Materials Science College of SciencesTianjin University of Science&TechnologyTianjin 300457China College of Chemical Engineering North China University of Science and TechnologyTangshan 063210China Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals Tianjin University of Science&TechnologyTianjin 300457China

Organic room temperature phosphorescence(RTP)materials have potential applications in information technology and ***,the precise control of the afterglow in reversible manners remains challenging for organic ***,we report a kind of organic RTP material fabricated by simple heating mixtures of tartaric acid(TA)and aromatic acids,which can switch their phosphorescence by *** mixtures show tunable phosphorescence from indigo to orange with phosphorescence efficiency of up to 53.99% due to locking different organic luminogens by the TA-formed matrix through the noncovalent *** afterglow of those materials lasts a few seconds and disappears by water fumigation,which can be repeated in response to wet/heat *** drop-casting those materials on glass slides,a laser-repatternable phosphorescence is achieved by facile laser direct writing and quenched by water *** results open the opportunity for the design of smart stimuli-responsive phosphorescence materials from sustainable natural products.

关键词： room temperature phosphorescence tunable afterglows tartaric acid laser direct writing stimuli-response

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