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State of research and trends in development of wood adhesives

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Forestry Studies in China 2011年第4期13卷 321-326页

作者： ZHAO lei-feng LIU yu XU Zheng-dong ZHANG Ya-zhuo ZHAO Fang ZHANG Shuang-bao College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China

We aim to present an overview of the status of adhesives in the wood industry, especially in the area of wood-based panels. The review summarizes the current state of research of two kinds of adhesives, i.e., synthetic adhesives and natural adhesives. Synthetic adhesives, consisting of urea-formaldehyde resins （UF）, phenol-formaldehyde resins （PF）, polyvinyl acetate emulsion （PVAc） and isocyanates, are widely used. For UF, most investigations are concerned with the reduction of free formaldehyde; for PF, most studies focus on finding new chemicals to replace phenol. PVAc has poor properties, but these can be improved by a blending reactions and copolymerization with other chemicals. Isocyanate is an environmentally friendly synthetic adhesive, but also suffers from inadequate properties. Natural adhesives, such as protein/starch, lignin and tannins, have poor bonding effect that limits their level of use, but their main advantages are that they are environmentally friendly and a renewable resource. Studies of modification can improve the bonding performances and gradually cause natural adhesives to become applied in industrial production. Some proposals for future development and the importance of environmentally friendly adhesives are provided, which will be helpful in future theoretical and experimental research.

关键词： synthetic adhesives natural adhesives main features development trend

Amelioration of ligamentum flavum hypertrophy using umbilical cord mesenchymal stromal cell-derived extracellular vesicles

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Bioactive Materials 2023年第1期19卷 139-154页

作者： Cheng Ma Xin Qi Yi-Fan Wei Zhi Li He-Long Zhang He Li feng-lei yu Ya-Nan Pu Yong-Can Huang Yong-Xin Ren Department of Orthopaedics The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu210029China Department of Pathogen Biology and Immunology Nanjing Medical UniversityNanjingJiangsu210029China Department of Orthopaedics Geriatric Hospital of Nanjing Medical UniversityNanjingJiangsu210024China Outpatient&Emergency Management Department The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies Department of Spine SurgeryPeking University Shenzhen HospitalShenzhen518036China

Ligamentum flavum(LF)hypertrophy(LFH)has been recognised as one of the key contributors to lumbar spinal ***,no effective methods are available to ameliorate this *** this study,human umbilical cord mesenchymal stromal cell-derived extracellular vesicles(hUCMSC-EVs)were introduced for the first time as promising vehicles for drug delivery to treat *** downregulation of miR-146a-5p and miR-221-3p expressions in human LF tissues negatively correlated with increased LF *** hUCMSC-EVs enriched with these two miRNAs significantly suppressed LFH in vivo and notably ameliorated the progression of transforming growth factorβ1(TGF-β1)-induced fibrosis in vitro after delivering these two miRNAs to mouse LF *** results further demonstrated that miR-146a-5p and miR-221-3p directly bonded to the 3′-UTR regions of SMAD4 mRNA,thereby inhibiting the TGF-β/SMAD4 signalling ***,this translational study determined the effectiveness of a hUCMSC-EVs-based approach for the treatment of LFH and revealed the critical target of miR-146a-5p and *** findings provide new insights into promising therapeutics using a hUCMSC-EVs-based delivery system for patients with lumbar spinal stenosis.

关键词： Ligamentum flavum hypertrophy Fibrosis Umbilical cord mesenchymal stromal cells Extracellular vesicle miR-146a-5p miR-221-3p

Advances in the Development of Gradient Scaffolds Made of Nano‑Micromaterials for Musculoskeletal Tissue Regeneration

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Nano-Micro Letters 2025年第3期17卷 455-500页

作者： lei Fang Xiaoqi Lin Ruian Xu Lu Liu yu Zhang feng Tian Jiao Jiao Li Jiajia Xue Beijing Laboratory of Biomedical Materials Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China School of Biomedical Engineering Faculty of Engineering and ITUniversity of Technology SydneySydneyNSW 2007Australia

The intricate hierarchical structure of musculoskeletal tissues,including bone and interface tissues,necessitates the use of complex scaffold designs and material structures to serve as tissue-engineered *** has led to growing interest in the development of gradient bone scaffolds with hierarchical structures mimicking the extracellular matrix of native tissues to achieve improved therapeutic *** on the anatomical characteristics of bone and interfacial tissues,this review provides a summary of current strategies used to design and fabricate biomimetic gradient scaffolds for repairing musculoskeletal tissues,specifically focusing on methods used to construct compositional and structural gradients within the *** latest applications of gradient scaffolds for the regeneration of bone,osteochondral,and tendon-to-bone interfaces are ***,the current progress of testing gradient scaffolds in physiologically relevant animal models of skeletal repair is discussed,as well as the challenges and prospects of moving these scaffolds into clinical application for treating musculoskeletal injuries.

关键词： Gradient scaffolds Musculoskeletal tissues Advanced manufacturing Biomaterials Tissue regeneration

Attention Eraser and Quantitative Measures for Automated Bone Age Assessment

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Computers, Materials & Continua 2025年第1期82卷 627-644页

作者： Liuqiang Shu lei yu College of Computer and Information Science Chongqing Normal UniversityChongqing401331China

Bone age assessment(BAA)aims to determine whether a child’s growth and development are normal concerning their chronological *** predict bone age more accurately based on radiographs,and for the left-hand X-ray images of different races model can have better adaptability,we propose a neural network in parallel with the quantitative features from the left-hand bone measurements for *** this study,a lightweight feature extractor(LFE)is designed to obtain the featuremaps fromradiographs,and amodule called attention erasermodule(AEM)is proposed to capture the fine-grained ***,the dimensional information of the metacarpal parts in the radiographs is measured to enhance the model’s generalization capability across images fromdifferent *** is trained and validated on the RSNA,RHPE,and digital hand atlas datasets,which include images from various racial *** model achieves a mean absolute error(MAE)of 4.42 months on the RSNA dataset and 15.98 months on the RHPE *** to ResNet50,InceptionV3,and several state-of-the-art methods,our proposed method shows statistically significant improvements(p<0.05),with a reduction in MAE by 0.2±0.02 years across different racial ***,t-tests on the features also confirm the statistical significance of our approach(p<0.05).

关键词： Bone age assessment attention eraser quantitative feature metacarpal bones

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论当代诗歌创作对藏族古典诗歌的借鉴

兰州大学学报（社会科学版） 2009年第6期37卷 69-73页

作者：冯玉雷西北师范大学西北成人教育学报甘肃兰州730070

中国具有悠久的诗歌文化传统,拥有世界上最大的诗歌读者群体,这两大优势为当代诗歌的蓬勃发展提供了飞翔的翅膀。可是,当代诗歌不但未能满足人民群众对诗歌的爱好和欣赏的欲望,相反,自身发展却越来越深地陷入了尴尬的困境。如何突破重围... 详细信息

中国具有悠久的诗歌文化传统,拥有世界上最大的诗歌读者群体,这两大优势为当代诗歌的蓬勃发展提供了飞翔的翅膀。可是,当代诗歌不但未能满足人民群众对诗歌的爱好和欣赏的欲望,相反,自身发展却越来越深地陷入了尴尬的困境。如何突破重围,建立积极向上、反映时代精神的新诗歌话语成为诸多有识之士关注的问题。藏族是中国古老民族之一,同样有着源远流长的诗歌传统,其古典诗歌灿烂辉煌,不但在漫漫历史长河中滋润着藏族人民的灵魂,而且,其贴近生活、追求崇高与创新的艺术精神对当代中国诗歌创作也有积极的借鉴意义。

关键词：藏族古典诗歌中国当代诗歌《格萨尔王传》《萨迦格言》《仓央嘉措情歌》

Multidisciplinary treatment in pulmonary metastasis of a mesorectal angiosarcoma achieving complete remission

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Chinese Medical Journal 2020年第5期133卷 626-628页

作者： Ding Zhou Zi-Shu Zhang feng-lei yu Cheng-Hua Yang Jing-yu Zhou Jian-Ping Zhou Department of Orthopedics the Second Xiangya HospitalCentral South UniversityChangshaHunan 410011China Department of Radiology the Second Xiangya HospitalCentral South UniversityChangshaHunan 410011China Department of Thoracic Surgery the Second Xiangya HospitalCentral South UniversityChangshaHunan 410011China Department of Urology Changhai HospitalNaval Medical University(the Second Military University)Shanghai 200433China Department of Gerontological Surgery the Second Xiangya HospitalCentral South UniversityChangshaHunan 410011China

To the Editor:Angiosarcoma(AS)is a rare and highly malignant mesenchymal tumor that accounts for 2%of adult soft tissue *** prognosis of AS is poor due to the high rate of metastasis and *** to a retrospective study by Lahat et al and Fayette et al,[1,2]31 of 121(19%)patients had metastases upon initial diagnosis,and 90(74%)had relapse and *** median survival of AS was 3.4 years,declining to 10 months in patients with *** attempt to improve AS treatment outcomes,a multimodality approach is advocated,including surgical resection combined with radiation,chemotherapy,immunotherapy,and/or anti-angiogenetic ***,we present a man who previously underwent resection of a mesorectal-derived intermediate hemangioendothelioma(HAE)and developed pulmonary metastasis of AS within a *** history is remarkable because of(1)the rare primary location:only 2 cases were mesenteric-related;(2)the uncharacteristic clinical course:the primary diagnosis of intermediate hemangioendothelioma later progressed to pulmonary metastatic AS;and(3)a successful series of multidisciplinary therapeutic procedures,especially selective arterial infusion(SAI)chemotherapy before metastases resection.

关键词： metastasis diagnosis chemotherapy treatment

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新时期敦煌文学的建构与发展

兰州大学学报（社会科学版） 2018年第3期46卷 187-193页

作者：冯玉雷冯雅颂西北师范大学<丝绸之路>杂志社甘肃兰州730070 兰州大学艺术学院甘肃兰州730000

敦煌文学是丝绸之路文学的重要组成部分,因此,广义地看,除敦煌文献遗存外,敦煌文学还应包括见载于史籍、汉简、碑铭等媒介,主要以丝绸之路甘肃段为创作题材的古代文学作品和文学现象,甚至还可以涵括近代和现当代考古学家、地理学家、探... 详细信息

敦煌文学是丝绸之路文学的重要组成部分,因此,广义地看,除敦煌文献遗存外,敦煌文学还应包括见载于史籍、汉简、碑铭等媒介,主要以丝绸之路甘肃段为创作题材的古代文学作品和文学现象,甚至还可以涵括近代和现当代考古学家、地理学家、探险家、旅行家、记者、作家、诗人等以丝绸之路甘肃段为创作题材的文学作品或文学现象。在新的历史时期,充分开发利用丝绸之路文化资源,通过文学作品、艺术片、纪录片、电影、电视剧、动漫作品等多种形式挖掘和表现敦煌、丝路文化,有利于推动甘肃文化产业发展,对丝绸之路经济带建设也具有深远影响。

关键词：敦煌文学丝绸之路丝绸之路经济带文化产业

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

Boosting Photocatalytic Performance of Cu-Mn Co-doped CeO_(2) Nanoparticles for Tetracycline Degradation

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 42-48页

作者： XU Rongqi MI Jianxin WANG Shulin XU Man ZHU Li BAI lei TANG Dandan lei yu Engineering Research Center of Environmental Materials and Membrane Technology of Hubei Province School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Shaanxi Coal Chemical Industry Technology Research Institute Co. Ltd.Xi’an 710100China

Cu-Mn co-doped CeO_(2) photocatalyst was successfully synthesized by the sol-gel method to assess its capability in degrading *** and TEM results showed that Cu and Mn were successfully co-doped into CeO_(2) without forming heterostructure,XPS and photoelectrochemical results revealed that Mn ions doping amplified the generation of photo-induced charge carriers,while Cu ions doping significantly facilitated the interfacial charge transfer ***,the optimized Cu3Mn2CeO_(2) nanoparticles exhibited the highest TC removal efficiency,achieved a rate of 78.18%and maintained a stable cycling performance.

关键词： photocatalyst co-doped charge separation water treatment