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High Voltage 2024年第1期9卷 94-104页

作者： Xu Yang Hong zhao chengcheng Zhang Chunyang Li Xindong zhao Jiaming Yang Xuan Wang Key Laboratory of Engineering Dielectrics and Its Application Harbin University of Science and TechnologyHarbinChina

To enhance the DC electrical performance of cross-linked polyethylene(XLPE),the graftable antioxidant methacrylic acid 2-hydroxy-3-(4-anilinoanilino)propyl ester(GA),which contains carbonyl and amino groups,and the crosslinking coagent trimethylolpropane trimethacrylate(TMPTMA),which contains carbonyl groups,are individually or co-grafted onto *** slightly higher deep trap density introduced by higher grafting concentration of TMPTMA results in more significant suppression effect of conductance current and enhanced breakdown strength at a lower temperature,while the suppression effect for the conductance current at 90°C becomes weakened due to limited trap ***,the deeper energy level introduced by GA suppresses the conductance current and improves the electrical strength of XLPE at 90°C more *** co-grafting,the conductance current of XLPE in a wide range temperature can be significantly reduced,especially for the temperature dependence of conductance current,which is beneficial to suppress the field strength *** results of thermally stimulated current and molecular simulation show that the polar groups of two monomers introduce deep charge traps in *** co-grafting system ensures the rationality of the crosslinking reaction kinetics and does not affect the cable manufacturing.

关键词： crosslinking electrical grafting

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外加剂对地聚合物涂层抗热老化性能影响研究

山东商业职业技术学院学报 2024年第3期24卷 110-115页

作者：赵程澄刘杰胜武肖雨张森龙张曼谭晓明武汉轻工大学土木工程与建筑学院湖北武汉430023 武汉市海洋工程结构防护材料中试平台湖北武汉430023

使用涂层防护是一种简单有效的混凝土防护方法,但涂层同样面临着各种各样的耐久性问题,其中,涂层的热老化是影响涂层使用寿命的关键因素。以偏高岭土为基料,以水玻璃为激发剂,与EVA乳液复配,制作地聚合物涂层,研究其抗热老化性能以及不... 详细信息

使用涂层防护是一种简单有效的混凝土防护方法,但涂层同样面临着各种各样的耐久性问题,其中,涂层的热老化是影响涂层使用寿命的关键因素。以偏高岭土为基料,以水玻璃为激发剂,与EVA乳液复配,制作地聚合物涂层,研究其抗热老化性能以及不同外加剂对地聚合物涂层抗热老化性能的影响,结果表明:偏高岭土基地聚合物涂层具有良好的抗热老化性能,其中,掺偶联剂的涂层对抗热老化性能综合提升效果显著。

关键词：地聚合物混凝土防护涂层抗热老化性能偶联剂

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砂胶比对地聚合物砂浆强度与干缩性能的影响

武汉轻工大学学报 2024年第2期43卷 62-67页

作者：张森龙刘杰胜段诗雪张芷瑜赵澄程张曼武汉轻工大学土木工程与建筑学院武汉430023 武汉市海洋工程结构防护材料中试平台武汉430023

为了研究砂胶比对地聚合物砂浆强度与干缩性能的影响,对不同砂胶比条件下砂浆的抗折强度、抗压强度、折压比、干缩率以及孔隙率进行了测试。实验结果表明,地聚合物砂浆的抗折强度和抗压强度随着砂胶比的增大而先增加后降低,且分别在砂... 详细信息

为了研究砂胶比对地聚合物砂浆强度与干缩性能的影响,对不同砂胶比条件下砂浆的抗折强度、抗压强度、折压比、干缩率以及孔隙率进行了测试。实验结果表明,地聚合物砂浆的抗折强度和抗压强度随着砂胶比的增大而先增加后降低,且分别在砂胶比为0.4和0.2时达到最大;在探究范围内,折压比随着砂胶比的增大而增大;干缩率随砂胶比的增加呈现出先降低后升高的变化趋势,且砂胶比在0.3时最小;随着砂胶比的增大,地聚合物砂浆的孔隙率和孔径增大,砂浆的致密性明显降低。试验可为地聚合物砂浆的配比优化和后续研究提供有益参考。

关键词：砂胶比粉煤灰地聚合物砂浆强度干缩率孔隙率

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昆虫病原线虫对昆虫致病机制的研究进展

吉林林业科技 2024年第2期53卷 43-48页

作者：赵程程修冬莹吴琳王鸿钧官甲义北华大学林学院吉林吉林132011 吉林省林业科学研究院吉林长春130033 吉林森工露水河林业有限公司吉林白山134506 吉林省林木种子调制储备中心吉林长春130607

本文综述了近年来昆虫病原线虫及其他共生菌对宿主昆虫致病机制的研究进展,从昆虫病原线虫对宿主组织、血淋巴、毒素和次生代谢的影响角度分别阐述,以期为研究新型的相关害虫防治方法及可持续开发利用昆虫病原线虫提供参考依据。

关键词：昆虫病原线虫共生菌致病性

Effi cacy of partial and complete resuscitative endovascular balloon occlusion of the aorta in the hemorrhagic shock model of liver injury

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World Journal of Emergency Medicine 2024年第1期15卷 10-15页

作者： Yi Shan Yang zhao chengcheng Li Jianxin Gao Guogeng Song Tanshi Li Department of Emergency Medicine Chinese PLA Medical SchoolBeijing 100853China Department of Emergency Medicine the Sixth Medical Center of PLA General HospitalBeijing 100048China Department of Emergency Medicine School of MedicineSouth China University of TechnologyGuangzhou 510006China Department of Emergency Medicine the First Medical Center of PLA General HospitalBeijing 100853China

BACKGROUND:Resuscitative endovascular balloon occlusion of the aorta(REBOA)can temporarily control traumatic ***,its prolonged use potentially leads to ischemia-reperfusion injury(IRI).Partial REBOA(pREBOA)can alleviate ischemic burden;however,its security and eff ectiveness prior to operative hemorrhage control remains ***,we aimed to estimate the effi cacy of pREBOA in a swine model of liver injury using an experimental sliding-chamber ballistic ***:Twenty Landrace pigs were randomized into control(no aortic occlusion)(n=5),intervention with complete REBOA(cREBOA)(n=5),continuous pREBOA(C-pREBOA)(n=5),and sequential pREBOA(S-pREBOA)(n=5)*** the cREBOA and C-pREBOA groups,the balloon was inflated for 60 *** hemodynamic and laboratory values were compared at various observation time *** samples immediately after animal euthanasia from the myocardium,liver,kidneys,and duodenum were collected for histological assessment using hematoxylin and eosin ***:Compared with the control group,the survival rate of the REBOA groups was prominently improved(all P<0.05).The total volume of blood loss was markedly lower in the cREBOA group(493.14±127.31 mL)compared with other groups(P<0.01).The pH was significantly lower at 180 min in the cREBOA and S-pREBOA groups(P<0.05).At 120 min,the S-pREBOA group showed higher alanine aminotransferase(P<0.05)but lower blood urea nitrogen compared with the cREBOA group(P<0.05).CONCLUSION:In this trauma model with liver injury,a 60-minute pREBOA resulted in improved survival rate and was effective in maintaining reliable aortic pressure,despite persistent *** tolerance time for aortic occlusion in Zone I for non-compressible torso hemorrhage was feasible with both continuous partial and sequential partial measures,and the significant improvement in the severity of acidosis and distal organ injury was observed in the sequential pREBOA.

关键词： Non-compressible torso hemorrhage Liver injury Ischemia-reperfusion injury Resuscitative endovascular balloon occlusion of the aorta

BIM+AR技术在贵南高铁河池站建设施工管理中的应用

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铁路技术创新 2024年第2期 127-132页

作者：李春红赵成成卢其峰黄华郭祥黎遵强北京经纬信息技术有限公司北京100081 中铁北京工程局集团有限公司北京102199 云桂铁路广西有限责任公司广西南宁530022

鉴于传统BIM技术很难将三维信息模型融入施工现场真实环境中,技术人员无法将BIM与现场深度结合应用的问题,依托贵南高铁河池站建设项目,积极探索“互联网+”、BIM技术、物联网和大数据技术应用。将AR技术与BIM技术相结合,研发基于BIM+A... 详细信息

鉴于传统BIM技术很难将三维信息模型融入施工现场真实环境中,技术人员无法将BIM与现场深度结合应用的问题,依托贵南高铁河池站建设项目,积极探索“互联网+”、BIM技术、物联网和大数据技术应用。将AR技术与BIM技术相结合,研发基于BIM+AR的辅助施工管理平台。将BIM模型及相关信息加载到移动终端中,利用二维码进行模型与现场匹配的精确定位,通过移动终端平板电脑即可查看模型。在项目现场以真实的比例对建筑的结构、空间、管道设计等进行检查,实现更精准的进度控制和资源管理,取得了一定的经济效益、管理效益和社会效益。

关键词： BIM+AR 贵南高铁站房施工管理模型大数据

A wave-shaped electrode flexible sensor capable of sensitively responding to wrinkle excitation for a multifunctional human-computer interaction system

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Nano Research 2024年第5期17卷 4454-4461页

作者： Yongyang Chen Zhiyi Wu chengcheng Han Zhi Cao Yiran Hu Ping zhao Yuanyu Wang College of Materials and Metallurgy Guizhou UniversityGuizhou 550025China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China Geological Brigade 105 Bureau of Geology and Mineral Exploration and Development of Guizhou ProvinceGuiyang 550018China

Human-machine interactions(HMIs)have advanced rapidly in recent decades in the fields of healthcare,work,and ***,people with disabilities and other mobility problems do not have corresponding high-tech aids for them to enjoy the convenience of *** this paper,we propose a sensor with a wave-shaped(corrugated)electrode embedded in a friction layer,which exhibits high sensitivity to skin fold excitation and enormous potential in *** to the wave-shaped electrode design,it has no built-in cavities,and its small size allows it to flexibly cope with folds at different *** specifying the carbon nanotube hybrid silicone film as the electrode layer material and silicone film as the friction layer,good electrical output performance,tensile properties,and biocompatibility can be ***,the sensor is tested on various joints and skin folds of the human body,the output signals of which can be distinguished between normal physiological behavior and test *** on this sensor,we designed a medical alarm system,a robotic arm assistive system,and a cell phone application control system for the disabled to help them in the fields of healthcare,work,and *** conclusion,our research presents a feasible technology to enhance HMIs and makes a valuable contribution to the development of high-tech aids for the disabled.

关键词： flexible sensors multifunctionality wrinkle excitation triboelectric nanogenerator human-machine interaction

The miR-9-5p/CXCL11 pathway is a key target of hydrogen sulfide-mediated inhibition of neuroinflammation in hypoxic ischemic brain injury

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Neural Regeneration Research 2024年第5期19卷 1084-1091页

作者： Yijing zhao Tong Li Zige Jiang chengcheng Gai Shuwen Yu Danqing Xin Tingting Li Dexiang Liu Zhen Wang Department of Physiology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Neurosurgery Qingdao Municipal HospitalQingdaoShandong ProvinceChina Department of Medical Psychology and Ethics School of Basic Medicine SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China Maternal and Child Health Care Hospital of Shandong Province Affiliated to Qingdao UniversityJinanShandong ProvinceChina

We previously showed that hydrogen sulfide(H2S)has a neuroprotective effect in the context of hypoxic ischemic brain injury in neonatal ***,the precise mechanism underlying the role of H2S in this situation remains *** this study,we used a neonatal mouse model of hypoxic ischemic brain injury and a lipopolysaccharide-stimulated BV2 cell model and found that treatment with L-cysteine,a H2S precursor,attenuated the cerebral infarction and cerebral atrophy induced by hypoxia and ischemia and increased the expression of miR-9-5p and cystathionineβsynthase(a major H2S synthetase in the brain)in the prefrontal *** also found that an miR-9-5p inhibitor blocked the expression of cystathionineβsynthase in the prefrontal cortex in mice with brain injury caused by hypoxia and ***,miR-9-5p overexpression increased cystathionine-β-synthase and H2S expression in the injured prefrontal cortex of mice with hypoxic ischemic brain injury.L-cysteine decreased the expression of CXCL11,an miR-9-5p target gene,in the prefrontal cortex of the mouse model and in lipopolysaccharide-stimulated BV-2 cells and increased the levels of proinflammatory cytokines BNIP3,FSTL1,SOCS2 and SOCS5,while treatment with an miR-9-5p inhibitor reversed these *** findings suggest that H2S can reduce neuroinflammation in a neonatal mouse model of hypoxic ischemic brain injury through regulating the miR-9-5p/CXCL11 axis and restoringβ-synthase expression,thereby playing a role in reducing neuroinflammation in hypoxic ischemic brain injury.

关键词： chemokine(C-X-C motif)ligand 11 cystathionineβsynthase H2S hypoxic ischemic brain injury inflammation L-cysteine lipopolysaccharide microglia miR-9-5p neuroprotection

基于供需视角的黄河流域甘肃段生态安全格局识别与优化

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生态学报 2022年第17期42卷 6973-6984页

作者：赵诚诚潘竟虎西北师范大学地理与环境科学学院兰州730070

利用多源空间数据,计算生态系统服务的高值区,识别生态源地,在计算土地利用程度、地均GDP和人口密度确定生态系统高需求区的基础上,通过夜间灯光数据修正生态阻力面系数,利用最小累积阻力模型提取源地与高需求区之间的生态廊道,以此构... 详细信息

利用多源空间数据,计算生态系统服务的高值区,识别生态源地,在计算土地利用程度、地均GDP和人口密度确定生态系统高需求区的基础上,通过夜间灯光数据修正生态阻力面系数,利用最小累积阻力模型提取源地与高需求区之间的生态廊道,以此构建并优化区域生态安全格局。结果表明:(1)黄河流域甘肃段生态源地总面积4.59×10^(4) km^(2),占研究区总面积的32.1%,集中分布于甘南和陇东中部地区。(2)生态系统服务高需求区总面积2.18×10^(4) km^(2),占研究区总面积的15.2%,主要集中于陇中及陇东的城市建成区,生态系统服务供应和需求空间匹配度差。(3)生态廊道总长度2908.3 km,整体格局上形成了东西向与南北向两大主要廊道轴线。生态廊道的识别中重点考虑了生态需求空间,提出了基于“两带—三区”的流域生态安全格局优化建议。

关键词：生态安全格局生态系统服务供应与需求源地识别生态廊道黄河流域

Wettability-driven synergistic resistance of scale and oil on robust superamphiphobic coating

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Chinese Chemical Letters 2024年第7期35卷 433-438页

作者： Yixuan Wang Jiexin Li Zhihao Shang chengcheng Feng Jianmin Gu Maosheng Ye Ran zhao Danna Liu Jingxin Meng Shutao Wang CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences(UCAS) Beijing 100049China State Key Laboratory of Metastable Materials Science and Technology(MMST) Yanshan UniversityQinhuangdao 066004China

Disgusting deposits(e.g.,scale and crude oil)in daily life and industrial production are always serious problems,posing great threats to the safety and economic ***,most of developed coatings can only conquer one part of these deposits such as superhydrophobic coatings possess antiscaling capacity but would adhere crude *** integrate scale resistance with oil repellence,we herein report a robust superamphiphobic(SAB)coating simultaneously reducing pollution of scale and oil for extended period of time(two weeks with over 98%reduction).Compared with single role of superhydrophobic and amphiphilic surfaces,the SAB coating can not only inhibit interfacial nucleation of scale but also reduce the adhesion of formed scale and polluted *** durability of the SAB coating is evaluated via mechanical tests(sandpaper abrasion,tape stripping and sand falling)and chemical corrosion(corrosive liquid immersing),revealed by sustainable high contact angles and low contact angle hysteresis of water and *** universality of this strategy can be further confirmed by adding different particles like kaolin,Al_(2)O_(3),and SiO_(2),resisting multiple types of scale(i.e.,CaSO_(4),BaSO_(4)and MgCO_(3))and oil(i.e.,glycerol,glycol,and mineral oil).Therefore,this study provides an ideal avenue for resisting scale and oil,which may be used for conquering the complexity of application environments(e.g.,oil production and transportation).

关键词： Superamphiphobic Durability Wettability Anti-scaling Oil repellence