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Smartly tuning supramolecular chirality in polymer gels via photoexcitation-induced cooperative self-assembly

Science China Chemistry 2024年

作者： Bingbing Yue Yulong Shi Fan Yang Danfeng Ye Jian Jin Pilan Zhang Shen Song Yifei Xu Hui Lin shihui zhu Liangliang zhu School of Materials and Chemistry University of Shanghai for Science and Technology State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University College of Material Science and Chemical Engineering Ningbo University of Technology Shanghai Depeac Biotechnology Co. Ltd. Burn and Plastic Surgery Department Children's Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine

Although supramolecular chirality tuning is prosperous in systems with small molecular building blocks, these systems lack structural strength and have limited practical applications. Conversely, polymer systems do not exhibit these drawbacks but suffer from topological chain entanglement, which often leads to large dynamic obstacles and therefore limits the tunability of supramolecular chirality. Herein, we report that by manipulating stoichiometry and employing light to alter the H-bond crosslinking between a photoexcitation-induced aggregatable molecule and high molecular weight poly(L-lactic acids), supramolecular chirality tuning of the polymer gel systems can be achieved in different ways through a cooperative ***, the Cotton effects of the examined systems can be negatively tuned by varying their stoichiometry, while positive tuning can be realized by photoirradiation. After deexcitation, negative Cotton effect tuning occurs again spontaneously in some cases. Such supramolecular chirality tuning is accompanied by rheological property tuning, demonstrating that our strategy can overcome polymer chain entanglement limitations. The proposed strategy inspires further works on the precise control of polymer chirality and, hence, development of asymmetric materials with changeable optical activity and modulus.

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“双碳”目标下物流企业绿色低碳发展路径研究——以A企业为例

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物流科技 2024年第16期47卷 95-98页

作者：朱诗慧武汉科技大学管理学院湖北武汉430065

“双碳”目标对物流业的影响不仅限于政策和法规上的变革,更是一种引导企业适应未来经济发展的内在驱动。文章聚焦于探讨物流企业在“双碳”目标下的绿色低碳发展路径,以A企业为例,揭示了其在包装回收、环保科技、低碳生态等方面的成功... 详细信息

“双碳”目标对物流业的影响不仅限于政策和法规上的变革,更是一种引导企业适应未来经济发展的内在驱动。文章聚焦于探讨物流企业在“双碳”目标下的绿色低碳发展路径,以A企业为例,揭示了其在包装回收、环保科技、低碳生态等方面的成功经验,并针对我国物流企业在“双碳”目标下的可持续发展,提出了制定切实可行的低碳战略、注重环保责任可视化和加大环保科技投入等建议。未来,物流企业仍需要应对政策法规、技术创新、市场竞争等多方面挑战,通过加强合作,不断增强适应能力,实现在“双碳”时代下的可持续发展。

关键词： “双碳”目标物流企业绿色低碳发展路径

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基于三通道CNN-GSAM-LSTFEM网络的雷达人体切向动作识别

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雷达科学与技术 2024年第2期22卷 135-144,154页

作者：屈乐乐祝诗卉沈阳航空航天大学电子信息工程学院辽宁沈阳110136

为了提高干涉雷达对人体切向动作的识别性能,本文提出一种基于三通道CNN-GSAM-LSTFEM网络的人体切向动作识别方法。首先利用一发二收的调频连续波(FMCW)雷达搭建干涉雷达平台采集人体切向动作回波数据,之后对每个接收通道的回波数据进... 详细信息

为了提高干涉雷达对人体切向动作的识别性能,本文提出一种基于三通道CNN-GSAM-LSTFEM网络的人体切向动作识别方法。首先利用一发二收的调频连续波(FMCW)雷达搭建干涉雷达平台采集人体切向动作回波数据,之后对每个接收通道的回波数据进行预处理,得到每个接收通道的多普勒时频图(DTFM)和双通道的干涉时频图(ITFM),然后将这3种时频图分别送入到3个并行的CNN-GSAM-LSTFEM网络进行训练,利用全局空间注意力模块(GSAM)和长短时特征提取模块(LSTFEM)增强卷积神经网络(CNN)的特征提取能力,最后将三通道提取的特征进行融合实现人体切向动作识别。实验结果表明,所提方法可有效提高人体切向动作的识别准确率,平均准确率高达98.77%。

关键词：人体动作识别干涉雷达注意力机制卷积神经网络特征融合

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Effect of Huanglian Jiedu Decoction on cardiac endoplasmic reticulum stress in spontaneously hypertensive rats

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Journal of Chinese Pharmaceutical Sciences 2024年第7期33卷 609-619页

作者： Xiaoming Zhang shihui zhu Yiwen Gao Jianxiang Li Nan Zhang Guihua Yue Yantai Affiliated Hospital of Binzhou Medical College Yantai 264100ShandongChina Ruikang Hospital Affiliated to Guangxi University of Traditional Chinese Medicine Nanning 530000GuangxiChina Guangxi University of Traditional Chinese Medicine Nanning 530000GuangxiChina

Huanglian Jiedu Decoction(HLJDD)is a quintessential prescription renowned for its heat-clearing and detoxifying *** is primarily prescribed to counteract the syndrome characterized by the excessive heat of the Sanjiao ***,the hyperactivity of liver fire is frequently linked with hypertension,where wind fire and wind toxicity emerge as pivotal pathogenic *** study aimed to investigate the impact of HLJDD on the endoplasmic reticulum in spontaneously hypertensive rats(SHR),further delving into the interplay between endoplasmic reticulum stress(ERS)and myocardial remodeling and *** SHR rats were stratified randomly into five cohorts:model,low-dose HLJDD,medium-dose HLJDD,high-dose HLJDD,and captopril *** comparison,a set of Wistar-Kyoto(WKY)rats served as the baseline control group,with each group comprising 10 *** the model and control groups received equivalent volumes of normal saline via gavage,the other groups were administered the respective drug dosages through the same route daily for a span of 6 *** the experiment’s conclusion,metrics such as the heart mass index(HWI)and left ventricular mass index(LVWI)were *** tissue anomalies were identified using H&E staining,while ERS-related protein and mRNA expression levels were ascertained via Western blotting analysis and ***,TUNEL staining was employed to detect cardiomyocyte *** findings indicated that increasing HLJDD concentrations corresponded with escalated HWI and LVWI in rat hearts(P<0.05).There was a marked enhancement in myocardial structural integrity,accompanied by a notable reduction in collagen *** mRNA and protein expressions of myocardial inositol-dependent enzyme 1α(IRE1α),X-box binding protein 1(XBP1),glycoregulatory protein 78(GRP78),and CCAAT enhancer binding protein homologous protein(CHOP)in the medium and high-dose groups saw significant declines(P<0.05).These effects mirrored those observed in the

关键词： Huanglian Jiedu Decoction Spontaneous hypertension Endoplasmic reticulum stress Myocardial remodeling IRE1α XBP1 GRP78 CHOP

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Limiting profile of blow-up solutions for the Gross-Pitaevskii equation

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Science China Mathematics 2009年第5期52卷 1017-1030页

作者： zhu shihui ZHANG Jian LI XiaoGuang College of Mathematics Sichuan UniversityChengdu 610064China College of Mathematics and Software Science Sichuan Normal UniversityChengdu 610066China College of Economics Sichuan Normal UniversityChengdu 610066China

This paper is concerned with the blow-up solutions of the Gross-Pitaevskii equation. Using the concentration compact principle and the variational characterization of the corresponding ground state, we obtain the limiting profile of blow-up solutions with critical mass in the corresponding weighted energy space. Moreover, we extend this result to small super-critical mass case by the variational methods and scaling technique.

关键词： Gross-Pitaevskii equation blow-up solution Bose-Einstein condensate harmonic potential concentration compact principle small super-critical mass 35B35 35Q53

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One-step approach for full-thickness skin defect reconstruction in rats using minced split-thickness skin grafts with Pelnac overlay

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Burns & Trauma 2019年第1期7卷 167-179页

作者： Tong Liu Chao Qiu Chi Ben Haihang Li shihui zhu Department of Burn Surgery Institute of BurnsThe First Affiliated HospitalNaval Medical UniversityShanghai 200433China Emergency Department The First Affiliated HospitalNaval Medical UniversityShanghai 200433China

Background:Split-thickness skin grafting is the current gold standard for the treatment of traumatic skin ***,for patients with extensive burns,split-thickness skin grafting is limited by donor skin *** split-thickness skin minced into micrografts increases the expansion ratio but may reduce wound repair *** substitutes such as Pelnac can enhance the healing of full-thickness skin wounds,but their application currently requires two *** present study investigated whether it is possible to repair full-thickness skin defects and improve wound healing quality in a single surgery using Pelnac as an overlay of minced split-thickness skin grafts in a rat ***:A full-thickness skin defect model was established using male Sprague-Dawley rats of 10 weeks *** animals were randomly divided into control and experimental groups in which Vaseline gauze and Pelnac,respectively,were overlaid on minced split-thickness skin grafts to repair the *** healing rate and quality were compared between the two *** better illustration of the quality of wound healing,some results were compared with those obtained for normal skin of ***:We found that using Pelnac as an overlay for minced split-thickness skin grafts accelerated wound closure and stimulated cell proliferation and tissue *** addition,this approach enhanced collagen synthesis and increased the formation of basement membrane and dermis as well as the expression of growth factors related to wound healing while reducing scar ***:Using minced split-thickness skin grafts overlaid with Pelnac enables the reconstruction of fullthickness skin defects in a single step and can increase the healing rate while improving the quality of wound healing.

关键词： Skin wound healing Full-thickness skin defect Minced skin graft Pelnac Split-thickness skin grafts Reconstruction

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A self-crosslinking,double-functional group modified bacterial cellulose gel used for antibacterial and healing of infected wound

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Bioactive Materials 2022年第11期7卷 248-260页

作者： Yajie Xie Kun Qiao Lina Yue Tao Tang Yudong Zheng shihui zhu Huiyi Yang Ziyuan Fang School of Material Science and Engineering University of Science and Technology BeijingBeijingChina Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology School of Chemical and Environmental EngineeringNorth China Institute of Science and TechnologyLangfang065201HebeiChina Department of Burn Surgery The First Affiliated Hospital of Naval Medical UniversityShanghai200433China

Cellulose/chitosan composite,as a mature commercial antibacterial dressing,is an important type of wound repair ***,how to achieve the perfect compound of two components and improve antibacterial activity is a major,lingering *** this study,a bifunctional group modified bacterial cellulose(DCBC)was prepared by carboxymethylation and selective ***,the chitosan(CS)was compounded in the network of DCBC by self-crosslinking to form dialdehyde carboxymethyl bacterial cellulose/chitosan composites(S-DCBC/CS).The aldehyde group can react with amino of CS by Schiff base *** carboxyl group of DCBC and the amorphous distribution of CS molecular chains increase the antimicrobial properties of *** bacteriostatic rate of composites could be higher than 95%.Bacteria can be attracted onto the surface of composites,what we call it“directional adhesion antibacterial effects”.In particular,a kind of large animal wound model,deep II degree infected scald of Bama miniature pig,was used to research the antimicrobial and healing properties of *** S-DCBC/CS can effectively inhibit bacterial proliferation of wound and kill the *** wound healing rate of S-DCBC/CS was up to 80%after three *** composites show better antibacterial and promoting concrescence effects than traditional chitosan dressings.

关键词： Self-crosslinking Bacterial cellulose Cell migration Wound healing Antimicrobial properties

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THE EXISTENCE AND STABILITY OF NORMALIZED SOLUTIONS FOR A BI-HARMONIC NONLINEAR SCHR?DINGER EQUATION WITH MIXED DISPERSION

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Acta Mathematica Scientia 2023年第2期43卷 539-563页

作者：罗庭健郑世骏朱世辉 School of Mathematics and Information Sciences Guangzhou UniversityGuangzhou 510006China Department of Mathematical Sciences Georgia Southern UniversityStatesboro 30460-8093USA School of Mathematical Sciences Sichuan Normal UniversityChengdu 610066China

In this paper,we study the ground state standing wave solutions for the focusing bi-harmonic nonlinear Schrodinger equation with aμ-Laplacian term(BNLS).Such BNLS models the propagation of intense laser beams in a bulk medium with a second-order dispersion *** by Qpthe ground state for the BNLS withμ=0,we prove that in the mass-subcritical regime p∈(1,1+8/d),there exist orbit ally stable ground state solutions for the BNLS when p∈(-λ0,∞)for someλ0=λ0(p,d,‖Qp‖L2)>***,in the mass-critical case p=1+8/d,we prove the orbital stability on a certain mass level below‖Q*‖L2,provided thatμ∈(-λ1,0),where■and Q*=Q1+8/*** proofs are mainly based on the profile decomposition and a sharp Gagliardo-Nirenberg type *** treatment allows us to fill the gap concerning the existence of the ground states for the BNLS when p is negative and p∈(1,1+8/d].

关键词： elliptic equations bi-harmonic operator normalized solutions profile decomposition

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Advances in regenerative medicine applications of tetrahedral framework nucleic acid-based nanomaterials: an expert consensus recommendation

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International Journal of Oral Science 2022年第4期14卷 439-460页

作者： Yunfeng Lin Qian Li Lihua Wang Quanyi Guo Shuyun Liu shihui zhu Yu Sun Yujiang Fan Yong Sun Haihang Li Xudong Tian Delun Luo Sirong Shi State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Oral and Maxillofacial Surgery West China Hospital of StomatologySichuan UniversityChengduChina School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghaiChina The Interdisciplinary Research Center Shanghai Advanced Research InstituteChinese Academy of SciencesZhangjiang LaboratoryShanghaiChina Institute of Orthopedics Chinese PLA General HospitalBeijing Key Laboratory of Regenerative Medicine in OrthopedicsKey Laboratory of Musculoskeletal Trauma&War Injuries PLABejingChina Department of Burn Surgery The First Affliated Hospital of Naval Medical UniversityShanghaiChina National Engineering Research Center for Biomaterials Sichuan UniversityChengduChina College of Biomedical Engineering Sichuan UniversityChengduChina Jiangsu Trautec Medical Technology Company Limited ChangzhouChina Chengdu Jingrunze Gene Technology Company Limited ChengduChina

With the emergence of DNA nanotechnology in the 1980s, self-assembled DNA nanostructures have attracted considerable attention worldwide due to their inherent biocompatibility, unsurpassed programmability, and versatile functions. Especially promising nanostructures are tetrahedral framework nucleic acids(t FNAs), first proposed by Turberfield with the use of a one-step annealing approach. Benefiting from their various merits, such as simple synthesis, high reproducibility, structural stability, cellular internalization, tissue permeability, and editable functionality, t FNAs have been widely applied in the biomedical field as threedimensional DNA nanomaterials. Surprisingly, t FNAs exhibit positive effects on cellular biological behaviors and tissue regeneration,which may be used to treat inflammatory and degenerative diseases. According to their intended application and carrying capacity,t FNAs could carry functional nucleic acids or therapeutic molecules through extended sequences, sticky-end hybridization,intercalation, and encapsulation based on the Watson and Crick principle. Additionally, dynamic t FNAs also have potential applications in controlled and targeted therapies. This review summarized the latest progress in pure/modified/dynamic t FNAs and demonstrated their regenerative medicine applications. These applications include promoting the regeneration of the bone,cartilage, nerve, skin, vasculature, or muscle and treating diseases such as bone defects, neurological disorders, joint-related inflammatory diseases, periodontitis, and immune diseases.

关键词： tetrahedral summarized versatile

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江南名丑出神入化——纪念京剧表演艺术家孙正阳先生

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中国京剧 2024年第4期 35-44页

作者：尚长荣朱世慧陈少云史依弘严庆谷徐孟珂金喜全上海京剧院湖北省京剧院上海戏剧家协会国家京剧院创作和研究中心上海戏剧学院戏曲学院

2024年3月7日,著名京剧表演艺术家、国家级非物质文化遗产(京剧)项目代表性传承人、上海京剧院一级演员孙正阳先生逝世,享年93岁。孙正阳先生功底扎实,文武兼备,嗓音脆亮,念白爽利,表演诙谐而不俗,对南北流派艺术兼容并蓄,形成了具有个... 详细信息

2024年3月7日,著名京剧表演艺术家、国家级非物质文化遗产(京剧)项目代表性传承人、上海京剧院一级演员孙正阳先生逝世,享年93岁。孙正阳先生功底扎实,文武兼备,嗓音脆亮,念白爽利,表演诙谐而不俗,对南北流派艺术兼容并蓄,形成了具有个性的表演风格,有“江南名丑”的美誉。代表剧目有《挡马》《海周过关》《拾玉镯》《铁弓缘》《刘姥姥与王熙凤》《凤还巢》《七侠五义》《智取威虎山》等,特别是在《智取威虎山》中成功饰演“栾平”一角,给观众留下了深刻的印象。本刊特邀京剧界知名人士共同追忆孙正阳先生,回顾他璀璨的艺术人生。

关键词：孙正阳上海京剧院《智取威虎山》京剧界文武兼备刘姥姥艺术人生一级演员

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