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Biomimetic chitin hydrogel via chemical transformation

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Nano Research 2024年第2期17卷 771-777页

作者： Rui-Rui Liu Qian-Qian Shi Yu-feng meng Yong Zhou Li-Bo Mao Shu-Hong Yu Division of Nanomaterials&Chemistry Hefei National Research Center for Physical Sciences at the MicroscaleDepartment of ChemistryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei 230026China College&Hospital of Stomatology Key Laboratory of Oral Diseases Research of Anhui ProvinceAnhui Medical UniversityHefei 230032China Department of Dental Implantology College&Hospital of StomatologyAnhui Medical UniversityHefei 230032China

Chitin hydrogel has been recognized as a promising material for various biomedical applications because of its biocompatibility and ***,the fabrication of strong chitin hydrogel remains a big challenge because of the insolubility of chitin in many solvents and the reduced chain length of chitin regenerated from *** herein introduce the fabrication of chitin hydrogel with biomimetic structure through the chemical transformation of chitosan,which is a water-soluble deacetylated derivative of *** reacetylation of the amino group in chitosan endows the obtained chitin hydrogel with outstanding resistance to swelling,degradation,extreme temperature and pH conditions,and organic *** chitin hydrogel has excellent mechanical properties while retaining a high water content(more than 95 wt.%).It also shows excellent antifouling performance that it resists the adhesion of proteins,bacteria,blood,and ***,as the initial chitosan solution can be feasibly frozen and templated by ice crystals,the chitin hydrogel structure can be either nacre-like or wood-like depending on the freezing method of the precursory chitosan *** to these anisotropic structures,such chitin hydrogel can exhibit anisotropic mechanics and mass transfer *** current work provides a rational strategy to fabricate chitin hydrogels and paves the way for its practical applications as a superior biomedical material.

关键词： chitin hydrogel biomimetic structure chemical stability mechanical strength antifouling

Physiotherapy for patients with depression:Recent research progress

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World Journal of Psychiatry 2024年第5期14卷 635-643页

作者： Hui-Ling Liu Jing Sun Shi-feng meng Ning Sun Department of Mental Health First Clinical Medical College of Shanxi Medical UniversityTaiyuan 030000Shanxi ProvinceChina Department of Rehabilitation First Hospital of Shanxi Medical UniversityTaiyuan 030000Shanxi ProvinceChina Department of Mental Health First Hospital of Shanxi Medical UniversityTaiyuan 030000Shanxi ProvinceChina

Depression,a common mental illness,seriously affects the health of individuals and has deleterious effects on *** prevention and treatment of depression has drawn the attention of many researchers and has become an important social *** treatment strategies for depression include drugs,psychotherapy,and *** therapy is ineffective in some patients and psychotherapy has treatment *** a reliable adjuvant therapy,physiotherapy compensates for the shortcomings of drug and psychotherapy and effectively reduces the disease recurrence *** is more scientific and rigorous,its methods are diverse,and to a certain extent,provides more choices for the treatment of *** can relieve symptoms in many ways,such as by improving the levels of neurobiochemical molecules,inhibiting the inflammatory response,regulating the neuroendocrine system,and increasing *** has biological effects similar to those of antidepressants and may produce a superimposed impact when combined with other *** article summarizes the findings on the use of physiotherapy to treat patients with depression over the past five *** also discusses several methods of physiotherapy for treating depression from the aspects of clinical effect,mechanism of action,and disadvantages,thereby serving as a reference for the in-depth development of physiotherapy research.

关键词： Depression Physiotherapy Non-pharmacological Rehabilitation therapy Recent advances

Iron oxide/CNT-based artificial nacre for electromagnetic interference shielding

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Nano Research 2024年第7期17卷 6560-6566页

作者： Cheng-Xin Yu Yu-feng meng Bo Yang Jun Pang Xiang-Sen meng Zi-Ye Zhao Qing-Yue Wang Li-Bo Mao Zhi-Kun Wu Shu-Hong Yu Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China Department of Chemistry New Cornerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China

Biological structural materials,despite consisting of limited kinds of compounds,display multifunctionalities due to their complex hierarchical *** some biomimetic strategies have been applied in artificial materials to enhance their mechanical stability,the simultaneous optimization of other functions along with the mechanical properties via biomimetic designs has not been thoroughly ***,iron oxide/carbon nanotube(CNT)-based artificial nacre with both improved mechanical and electromagnetic interference(EMI)shielding performance is fabricated via the mineralization of Fe_(3)O_(4)onto a CNTincorporated *** micro-and nano-structures of the artificial nacre are similar to those of natural nacre,which in turn improves its mechanical *** alternating electromagnetic wave-reflective CNT layers and the wave-absorptive iron oxide layers can improve the multiple reflections of the waves on the surfaces of the reflection layers,which then allows sufficient interactions between the waves and the absorption ***,compared with the reflection-dependent EMI-shielding of the non-structured material,the artificial nacre exhibits strong absorption-dependent shielding behavior even with a very low content of wave-absorptive *** to the high mechanical stability,the shielding effectiveness of the artificial nacre that deeply cut by a blade is still maintained at approximately 70%−96%depending on the incident wave *** present work provides a new way for designing structural materials with concurrently enhanced mechanical and functional properties,and a path to combine structural design and intrinsic properties of specific materials via a biomimetic strategy.

关键词： artificial nacre electromagnetic interference shielding biomineralization biomimetic material hierarchical structure

World’s first implementation of close-fit pipe jacking of twin tunnels for construction of subway station--Innovation in equipment and construction technology

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Frontiers of Engineering Management 2024年第2期11卷 369-376页

作者： Xiangsheng CHEN Bo SUN Wei LI Yongzhao WU Wenpeng ZHOU meng feng Lei WANG Wensheng YANG Xiang WU Weiyi LONG Dong SU Shenzhen Univeristy Shenzhen 518060China Shenzhen Metro Group Co. Ltd.Shenzhen 518031China Shenzhen Municipal Design&Research Co. Ltd.Shenzhen 518000China Sinohydro Bureau 11 Co. Ltd.Zhengzhou 450001China China Railway Engineering Equipment Group Co. LTD.Zhengzhou 450000China Shenzhen University Shenzhen 518060China

1 Project overview The Shasan station of Phase II of Shenzhen’s urban rail transit Line 12 is situated in Bao’an District,*** comprises a two-level underground island platform station,measuring 212 m in length,and 22.6 m in width,with an overburden thickness of about 7.0 ***.1 illustrates the presence of a large underground reinforced concrete stormwater culvert,measuring 11.5 m by 3.6 m,traversing the station’s center.

关键词： Subway station close-fit pipe jacking of twin tunnels modular rectangular pipe jacking machine Structural Transformation equipment construction

Coca-Cola consumption vs fragmentation in the management of patients with phytobezoars:A prospective randomized controlled trial

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World Journal of Gastrointestinal Endoscopy 2024年第2期16卷 83-90页

作者： Fu-Guo Liu De-feng meng Xia Shen Dan meng Ying Liu Ling-Yun Zhang Department of Gastroenterology The Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina Endoscopy Center The Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina

BACKGROUND Gastric phytobezoars(GPBs)are very common in northern *** therapy involving carbonated beverage consumption and endoscopic lithotripsy has been shown to be effective and *** studies on this subject are often case reports highlighting the successful dissolution of phytobezoars through Coca-Cola ***,large-scale prospective investigations in this domain remain ***,we conducted a randomized controlled trial to examine the effects of Coca-Cola consumption on *** To evaluate the impact of Coca-Cola on GPBs,including the dissolution rate,medical expenses,ulcer rate,and operation *** A total of 160 consecutive patients diagnosed with GPBs were allocated into two groups(a control group and an intervention group)through computer-generated *** in the intervention group received a Coca-Cola-based regimen(Coca-Cola 2000-4000 mL per day for 7 d),while those in the control group underwent emergency *** Complete dissolution of GPBs was achieved in 100% of the patients in the intervention *** disparity in expenses between the control group and intervention group(t=25.791,P=0.000)was statistically significant,and the difference in gastric ulcer occurrence between the control group and intervention group(χ^(2)=6.181,P=0.013)was also statistically *** Timely ingestion of Coca-Cola yields significant benefits,including a complete dissolution rate of 100%,a low incidence of gastric ulcers,no need for fragmentation and reduced expenses.

关键词： Coca-Cola Bezoars Solubility Lithotripsy Gastrosco

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伊丽莎白菌属感染流行病学及耐药性研究进展

中国感染控制杂志 2024年第3期23卷 391-396页

作者：冯孟文张梦怡周静南京医科大学第一附属医院重症医学科江苏南京210029

近年来,伊丽莎白菌属感染发病率明显增加。伊丽莎白菌属可引起肺炎、脑膜炎、菌血症等,由于其对抗菌药物耐药率高,导致患者住院时间延长、病死率升高,给患者及社会带来沉重负担。本文对伊丽莎白菌属的流行病学、致病机制及耐药情况进行... 详细信息

近年来,伊丽莎白菌属感染发病率明显增加。伊丽莎白菌属可引起肺炎、脑膜炎、菌血症等,由于其对抗菌药物耐药率高,导致患者住院时间延长、病死率升高,给患者及社会带来沉重负担。本文对伊丽莎白菌属的流行病学、致病机制及耐药情况进行综述,以期为伊丽莎白菌属感染的诊治和防控提供参考依据。

关键词：伊丽莎白菌属致病机制耐药机制流行病学诊治及防控

新高考十年“选科走班”政策推进的矛盾审视与路径反思

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教学与管理 2024年第19期 66-70页

作者：苗学杰冯孟阳河南师范大学教育学部河南新乡453007

新高考十年“选科走班”政策取得了显著成效,但也面临师生对政策价值判断反差明显、选科决策出现兴趣为成绩“让路”、学生多样发展与单一评价冲突、教师多重压力与家长“高认可低参与”矛盾、“自利性”诉求诱发政策落实异化等现实矛... 详细信息

新高考十年“选科走班”政策取得了显著成效,但也面临师生对政策价值判断反差明显、选科决策出现兴趣为成绩“让路”、学生多样发展与单一评价冲突、教师多重压力与家长“高认可低参与”矛盾、“自利性”诉求诱发政策落实异化等现实矛盾。“选科走班”政策推进还需进一步理顺教考关系,增强利益群体政策认同度;多元评价赋能高中多样发展,持续促进选才与育人统一;因校制宜优化资源配置,凝聚家校社共同支持合力。

关键词：新高考选科走班选科制

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数字基础设施、创新要素配置与全球价值链嵌入

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软科学 2024年第7期38卷 36-41页

作者：桑玉昆冯绪猛南京农业大学基本建设处南京210095 南京农业大学人文与社会发展学院南京210095

基于2013-2021年中国30个省级面板数据,实证分析了数字基础设施对全球价值链嵌入的影响效应、传导机制及地域差异。结果显示:数字基础设施建设对全球价值链嵌入程度提升具有显著推动作用,且存在空间溢出效应。数字基础设施建设对全球价... 详细信息

基于2013-2021年中国30个省级面板数据,实证分析了数字基础设施对全球价值链嵌入的影响效应、传导机制及地域差异。结果显示:数字基础设施建设对全球价值链嵌入程度提升具有显著推动作用,且存在空间溢出效应。数字基础设施建设对全球价值链嵌入程度加深促进作用存在区域异质性,在中西部地区更明显;创新要素配置在数字基础设施建设与全球价值链嵌入的关系中具有中介效应;数字基础设施建设对全球价值链嵌入提升的促进作用具有非线性特征,且东部地区相较于中西部地区更能获得数字基础设施建设的溢出性红利。最后,提出超前部署数字基础设施建设、提高创新要素配置合理性、跟进地区差异化发展战略的政策建议。

关键词：数字基础设施创新要素配置全球价值链嵌入进口中间品

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新时代发挥红色文化育人价值的路径构建

文化创新比较研究 2024年第8期8卷 139-142,158页

作者：冯朦南京邮电大学江苏南京210000

红色文化是中国先进文化的重要组成部分,在新时代下,面对社会发展与需求带来的挑战及新媒体、多元文化对学生行为方式的冲击和网络技术的发展带来的挑战,探索如何充分发挥红色文化的育人价值有着重要意义。该文通过红色文化的溯源,探讨... 详细信息

红色文化是中国先进文化的重要组成部分,在新时代下,面对社会发展与需求带来的挑战及新媒体、多元文化对学生行为方式的冲击和网络技术的发展带来的挑战,探索如何充分发挥红色文化的育人价值有着重要意义。该文通过红色文化的溯源,探讨红色文化和中华优秀传统文化的关系,以及红色文化与马克思理论的关系,从信念价值、德育价值、智育价值、美育价值、劳动教育价值等方面探索红色文化的育人价值,构建了新时代红色文化的育人路径,包括坚持马克思主义理论指导,增进红色文化认同感;面对教育的主体改变,全方面拓宽育人路径;拓展红色文化的传播途径,提高创新能力;借助大数据思维,提升红色文化育人效果。

关键词：新时代红色文化育人价值路径构建