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Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan Zhang cheng Hao Tongtong Fu Dian yu Jane Howe Kaiwen chen Ning Yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering and Applied Chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Science and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(Ti_(3)C_(2)T_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

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致密油气藏裂缝介质压力敏感分析与计算方法

大庆石油地质与开发 2017年第2期36卷 171-174页

作者：孙璐刘月田冯月丽于鹏陈健丁耀中国石油大学石油工程教育部重点实验室北京102249

致密油气藏裂缝介质的压力敏感性对油气藏开发效果具有显著影响。基于物质守恒理论,通过理论推导建立了基质和裂缝的压力敏感方程;同时,通过开展单条裂缝压力敏感渗流物理模拟实验,研究裂缝变形特征和介质渗透率变化特征,并利用实验结... 详细信息

致密油气藏裂缝介质的压力敏感性对油气藏开发效果具有显著影响。基于物质守恒理论,通过理论推导建立了基质和裂缝的压力敏感方程;同时,通过开展单条裂缝压力敏感渗流物理模拟实验,研究裂缝变形特征和介质渗透率变化特征,并利用实验结果验证了压力敏感裂缝性介质渗透率模型的合理性。研究表明:建立的基质和裂缝压力敏感方程是关于流体压力的函数,能够解决常规压力敏感方程中变形系数确定困难的问题,增强了压力敏感方程在实际致密油藏开发中的适应性。实验中发现流体压力下降,基质块发生膨胀使得基质块之间的裂缝闭合,开度变小,介质渗透率变小;流体压力升高时,基质块发生收缩,使得基质块之间裂缝开启,开度增大,介质渗透率变大。对比实验模拟结果与基于实验参数的渗透率模型的计算结果,验证了渗透率模型的合理性。通过研究,揭示了致密油藏裂缝介质的压力敏感变形机理,又为裂缝介质的渗透率表征奠定了基础。

关键词：致密油气藏裂缝变形压力敏感方程实验模拟

45CT和NiCr/Cr_3C_2涂层在模拟烟气中的热腐蚀行为

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表面技术 2018年第3期47卷 210-216页

作者：倪进飞洪嘉刘光明李茂东彭昱晨张民强广州特种承压设备检测研究院广州510663 南昌航空大学材料科学与工程学院南昌330063 东方锅炉股份有限公司材料研究所四川自贡643001

目的采用超音速火焰喷涂技术在P12钢表面制备45CT和NiCr/Cr_3C_2涂层,研究两种涂层样品的热腐蚀行为和机理。方法将样品表面涂覆75%Na_2SO_4+25%NaCl(质量配比)混合盐膜后,置于650℃含0.15%SO_2(体积分数)的模拟烟气中进行腐蚀,间隔一... 详细信息

目的采用超音速火焰喷涂技术在P12钢表面制备45CT和NiCr/Cr_3C_2涂层,研究两种涂层样品的热腐蚀行为和机理。方法将样品表面涂覆75%Na_2SO_4+25%NaCl(质量配比)混合盐膜后,置于650℃含0.15%SO_2(体积分数)的模拟烟气中进行腐蚀,间隔一定时间取出样品进行质量称取,获得腐蚀动力学曲线。采用XRD、SEM/EDS对喷涂层和热腐蚀产物的成分、形貌、物相进行分析。结果采用超音速火焰喷涂制备的涂层结构致密、孔隙率低。腐蚀过程中样品整体表现为增重,但增重过程中有失重,NiCr/Cr_3C_2后期失重比45CT严重。45CT和NiCr/Cr_3C_2涂层均生成了耐蚀性良好的致密Cr_2O_3,而NiCr/Cr_3C_2涂层样品在涂层/基体界面还生成了氧化物和硫化物层,易导致涂层与基体界面弱结合。结论在650℃含0.15%SO_2的模拟烟气条件下,45CT涂层样品表现出了比NiCr/Cr_3C_2更好的抗热腐蚀性能。

关键词： 45CT NiCr/Cr3C2 涂层模拟烟气热腐蚀

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光控晶闸管n发射层深度的研究

华中工学院学报 1987年第1期 41-44页

作者：余岳辉彭昭廉陈涛华中工学院固体电子学系

本文以挖槽型小电流光控晶闸管（LTT）为对象,计及载流子浓度对迁移率的影响,由计算分析得到了光触发灵敏度(PL*)与n+发射层深度(Xin)的关系,从而确定了最佳n+发射层深度的范围.

关键词：晶闸管发射系统光导纤维发光二极管灵敏度

3种能源草在铅锌矿区土壤中的生长及其对重金属的富集特性

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水土保持学报 2014年第5期28卷 291-296页

作者：刘影伍钧杨刚彭雨晨沈斌王莉淋四川农业大学资源环境学院四川省土壤环境保护重点实验室成都611130

采用土壤盆栽试验,研究紫色皇竹草、甜象草、柳枝稷3种能源草在铅锌矿区原状重金属污染土壤中的生长及其对Pb、Zn、Cd、Cu的吸收累积特性。结果表明,3种能源草在铅锌矿区重金属污染土壤中生长正常,外观均未表现出明显的受毒害症状,具有... 详细信息

采用土壤盆栽试验,研究紫色皇竹草、甜象草、柳枝稷3种能源草在铅锌矿区原状重金属污染土壤中的生长及其对Pb、Zn、Cd、Cu的吸收累积特性。结果表明,3种能源草在铅锌矿区重金属污染土壤中生长正常,外观均未表现出明显的受毒害症状,具有良好的适应性。在3种能源草中的重金属含量分别为Pb130.74~1 135.11mg/kg,Zn 88.51~269.07mg/kg,Cd 2.87~8.07mg/kg,Cu 6.64~55.45mg/kg。以转运系数（TF）和富集系数（BF）讨论3种能源草对重金属的转运富集能力,发现不同植物对不同重金属的TF和BF有较大差异。除柳枝稷对Zn的TF值为2.622,甜象草对Cd的BF值为1.021 4外,能源草对重金属的其余TF和BF值均小于1.0。根据植株的生长状况、重金属含量、富集能力和转运能力,说明3种能源草均能在铅锌矿区重金属复合污染土壤中正常生长,并可用于以Pb为主的重金属复合污染土壤的修复。

关键词：能源草铅锌矿重金属污染土壤植物修复

硒及硒纳米颗粒生物学机制与口腔常见疾病的关系

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中国组织工程研究 2025年第22期29卷 4813-4822页

作者：彭璐瑶顾瑜遵义医科大学珠海校区广东省珠海市519041 贵州省高等学校口腔疾病研究特色重点实验室贵州省遵义市563000

背景:硒作为人体所需的微量非金属元素具有抗炎、抗氧化、抗菌、免疫调节和抗肿瘤等生物活性,已经在生物医学领域得到广泛应用。目的:总结硒及其纳米颗粒在抗炎、抗氧化、抗菌、免疫调节和抗肿瘤方面的功能和作用机制,以及在口腔医学领... 详细信息

背景:硒作为人体所需的微量非金属元素具有抗炎、抗氧化、抗菌、免疫调节和抗肿瘤等生物活性,已经在生物医学领域得到广泛应用。目的:总结硒及其纳米颗粒在抗炎、抗氧化、抗菌、免疫调节和抗肿瘤方面的功能和作用机制,以及在口腔医学领域的研究进展。方法:以“selenium,selenium nanoparticles,oral neoplasms,caries,dental pupal disease,periapical disease,dental implant”为英文检索词,以“硒,硒纳米颗粒,口腔癌,龋病,牙髓病,根尖周病,口腔种植”为中文检索词,分别在PubMed、中国知网、万方数据库进行文献检索,检索文献时限为2000年1月至2024年2月。经过对文献的深入分析和仔细阅读,最后选择74篇文献进行全面综述。结果与结论:(1)硒的生物学特性主要是通过合成硒蛋白,以抗氧化机制为核心,调节各种细胞因子和介导与之相关的信号通路,进而产生抗菌、免疫调节、抗肿瘤等作用;(2)硒除了在口腔癌、龋病、牙髓根尖周病等方面可用于早期诊断、治疗和预后判断外,更多的是可作为新型口腔材料在口腔领域应用,例如:用于开发新型牙科封闭剂或根管系统消毒剂,又或在优化口腔种植材料性能等方面有所应用;(3)生物安全性是影响硒在生物医药领域应用的最重要因素之一,选择合适的剂量和形式才能使其发挥出良好作用。硒在口腔材料学方面展现出了巨大的应用潜力和广阔的发展空间。

关键词：硒硒纳米颗粒口腔癌龋病牙髓根尖周病口腔种植

Efficacy and safety of Tripterygium wilfordii glycosides tablets combined with Western medicine for patients with rheumatic immune diseases

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World Journal of Clinical Cases 2025年第6期13卷 14-23页

作者： Hang Shu Xiao-yu chen Jie Zhao Pin Li Zhen Sun Department of Traditional Chinese Medicine Hangzhou Special Service Recuperation Center of Chinese People's Liberation Army Air ForceNanjing 210000Jiangsu ProvinceChina Department of Convalescence Hangzhou Special Service Recuperation Center of Chinese People's Liberation Army Air ForceNanjing 210000Jiangsu ProvinceChina

BACKGROUND Rheumatic immune diseases are a group of chronic inflammatory diseases charac-terized by joint and systemic multi-organ involvement,including rheumatoid arthritis,systemic lupus erythematosus,and Sjogren’s syndrome,among *** pathogenesis of these diseases is related to the abnormal activation and regulatory imbalance of the immune *** prevalence and morbidity of rheumatic immune diseases are high,imposing a significant burden on patients'quality of life and socio-economic ***,the treatment of rheumatic immune diseases mainly relies on Western medicine,such as non-steroidal anti-inflammatory drugs,glucocorticoids,disease-modifying antirheumatic drugs,and ***,the therapeutic effects of Western medicine are not ideal,some patients poorly respond or are resistant to Western medicine,and long-term use often causes various adverse *** To systematically evaluate the efficacy and safety of Tripterygium wilfordii gly-cosides tablets combined with Western medicine in the treatment of patients with rheumatic immune *** This study conducted a meta-analysis to systematically evaluate the efficacy and safety of Tripterygium wilfordii glycosides tablets combined with Western medicine for patients with rheumatic immune *** and English databases were searched for randomized controlled trials(RCTs)on the treatment of rheumatic immune diseases with Tripterygium wilfordii glycosides tablets combined with Western *** quality of the included studies was assessed using the Cochrane risk of bias assessment ***-analysis was performed using RevMan 5.4 *** The meta-analysis included 11 RCTs involving 1026 patients with rheumatic immune *** combined treatment significantly reduced the risk of disease recurrence(relative risk=1.07,95%confidence interval:1.01-1.15,P<0.05)and showed no significant heterogeneity(I2=0%,P=0.53),indicating that Tripterygium wilfordii glycosides

关键词： Rheumatic immune diseases Tripterygium wilfordii polyglycosides tablets Western medicine treatment Systematic review Meta-analysis

沉淀-水解法制备ZrO_2纳米微晶及其表征

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广州化工 2011年第12期39卷 82-83,98页

作者：彭雨辰蔡育妮陈嘉敏龚晓钟深圳大学化学与化工学院深圳市功能高分子重点实验室广东深圳518060

运用沉淀-水解法在高温、高压条件下制备ZrO2纳米微晶,所制得的ZrO2纳米微晶利用X-射线衍射(XRD)测得为四方晶系,利用扫描电子显微镜(SEM)测定其粒径为100 nm左右。

关键词： ZrO2纳米微晶沉淀-水解法表征

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang Nan Zheng Qingming Lin Yan You Zheng Gong Yangping Zhuang Jiali Wu yu Wang Hanlin Huang Jun Ke Feng chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species