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贵州省习水县暴雨特征及成因分析
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作者 肖雨霞 张艳梅 +2 位作者 蹇昊 石方 李丽 《山地气象学报》 2024年第2期57-61,共5页
【目的】在极端天气频发的气候背景下,有必要进一步分析习水县暴雨天气时空分布特征。【方法】利用1959—2022年贵州省习水国家基本气象站逐日降水资料、2010—2022年24个乡镇区域站日降水资料,运用统计学及空间插值等方法,对习水县的... 【目的】在极端天气频发的气候背景下,有必要进一步分析习水县暴雨天气时空分布特征。【方法】利用1959—2022年贵州省习水国家基本气象站逐日降水资料、2010—2022年24个乡镇区域站日降水资料,运用统计学及空间插值等方法,对习水县的暴雨时空分布特征及成因进行分析。【结果】习水县暴雨多发生在习水河谷和赤水河谷的迎风坡及东部喇叭口地形区域,空间分布特征为北多南少;年区域性暴雨日数呈增长趋势;区域性暴雨月变化呈“单峰”型分布特征,主要出现在5—9月,占比94%;区域性大暴雨日数月分布呈“双峰”型分布,峰值在6月、8月。习水县暴雨具有明显日变化特征,夜雨特征明显,大暴雨夜雨占比81.1%;区域性暴雨天气过程主要降水时段集中在19时—次日06时,占比76.9%。习水从春季至秋季都有暴雨出现,暴雨日数频次大值区自西向东移动,夏季暴雨出现最多,占比69%。将造成区域性暴雨天气的影响系统分为低涡切变型、冷锋低槽型、梅雨锋型、台风外围型等4种类型。低涡切变型产生暴雨最多,占比77.3%。【结论】习水县暴雨空间分布呈北多南少,区域性暴雨主要出现在5—9月,夜雨特征明显,该研究成果可为更好地开展习水县暴雨灾害性天气预报及气象服务工作提供参考。 展开更多
关键词 暴雨特征 成因分析 习水县
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城市情感治理的内在逻辑及其过程机制——以“淄博烧烤”为例 被引量:3
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作者 何斌 简浩 +2 位作者 胡卫敏 倪钢 霍文宇 《北京交通大学学报(社会科学版)》 北大核心 2023年第3期74-83,共10页
基于情感治理的内在逻辑,以“淄博烧烤”为例,剖析其火爆的演化过程和根本原因,给出淄博的城市情感治理模型,探讨城市情感治理的过程机制。研究认为:以情感为核心的城市情感治理是导致“淄博烧烤”火爆出圈的根本原因,而学子报恩事件、... 基于情感治理的内在逻辑,以“淄博烧烤”为例,剖析其火爆的演化过程和根本原因,给出淄博的城市情感治理模型,探讨城市情感治理的过程机制。研究认为:以情感为核心的城市情感治理是导致“淄博烧烤”火爆出圈的根本原因,而学子报恩事件、网红效应、地域文化、城市服务管理和社会秩序建设共同构成淄博城市情感治理的五个基本维度。从过程机制看,学子报恩事件是淄博城市情感治理的导火索,网红效应是其城市情感治理的催化剂,“好客山东”地域文化是其城市情感治理的文化基础,以情感为核心的城市服务管理是其城市情感治理的管理基础,以情感为基础的社会秩序建设是其城市情感治理的社会保障。由此可见,以情感为核心的城市情感治理具有价值理性和工具理性的双重意义,它不仅是城市治理的核心内容,也是修复城市情感创伤的合理、有效的工具。作为对刚性治理的一种合理补充,情感治理有助于弥合以科层制为基础的刚性治理中的干群隔阂,改善缺乏人情味的城市治理模式,实现现代城市的高质量发展。 展开更多
关键词 情感治理 城市治理 网红效应 情感传染效应 淄博烧烤
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无醛阻燃人造板的研究现状及发展趋势 被引量:2
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作者 邓超 梁雨晴 +2 位作者 菅昊 温明宇 时君友 《林产工业》 北大核心 2023年第6期6-13,共8页
木质材料因具有重量轻、强重比高、弹性好等优点被广泛应用于各个领域,但其可燃的特性限制了在某些方面的应用。阐述了现阶段木材阻燃剂种类及应用研究现状,包括卤系阻燃剂、磷氮系阻燃剂、无机阻燃剂,并对其阻燃机理及应用优缺点进行... 木质材料因具有重量轻、强重比高、弹性好等优点被广泛应用于各个领域,但其可燃的特性限制了在某些方面的应用。阐述了现阶段木材阻燃剂种类及应用研究现状,包括卤系阻燃剂、磷氮系阻燃剂、无机阻燃剂,并对其阻燃机理及应用优缺点进行了对比。此外,重点对无醛阻燃人造板的研究现状进行了阐述,综述了近几年无醛阻燃人造板的研究进展,并对未来无醛阻燃人造板的发展方向进行了深入探讨。 展开更多
关键词 木质材料 阻燃改性 阻燃机理 无醛人造板 阻燃人造板
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磁共振成像3D序列与CT诊断腰椎关节突骨关节炎的对比研究 被引量:1
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作者 陈健 宋智 +5 位作者 曾冰欣 简昊 段细龙 周仁辉 黄云 曾文琴 《中国医学创新》 CAS 2023年第2期91-96,共6页
目的:探讨磁共振成像(MRI)3D(MRI 3D)序列与计算机断层扫描(CT)诊断腰椎关节突骨关节炎(LFJOA)的价值。方法:选取2021年3月-2022年3月吉安市中心人民医院收治的75例LFJOA患者,均行CT、MRI、MRI 3D序列检查,分析CT、MRI、MRI 3D序列对LF... 目的:探讨磁共振成像(MRI)3D(MRI 3D)序列与计算机断层扫描(CT)诊断腰椎关节突骨关节炎(LFJOA)的价值。方法:选取2021年3月-2022年3月吉安市中心人民医院收治的75例LFJOA患者,均行CT、MRI、MRI 3D序列检查,分析CT、MRI、MRI 3D序列对LFJOA的影像学特征及诊断准确率;比较CT、MRI、MRI 3D序列对单节段、多节段病变、分级、LFJOA诊断结果。结果:MRI 3D序列对LFJOA的诊断准确率为96.00%,高于CT的85.33%、MRI的82.67%(P<0.05);MRI 3D序列在LFJOA单节段病变、多节段病变中的检出率均高于CT、MRI(P<0.05);MRI 3D序列对LFJOAⅠ级检出率高于CT、MRI(P<0.05);MRI 3D序列在LFJOA的软骨损失、滑膜增厚、软骨下骨囊变、关节腔积液、关节间隙狭窄、骨质增生、软骨下骨质水肿、小关节周围炎症检出率均高于CT、MRI,关节腔积气的检出率高于CT(P<0.05),MRI在LFJOA的软骨损失、关节腔积液、关节腔积气检出率均高于CT,软骨下骨囊变、骨质增生检出率均低于CT(P<0.05)。结论:MRI 3D序列与CT均可诊断LFJOA,MRI 3D序列诊断价值较高。 展开更多
关键词 腰椎关节突骨关节炎 计算机断层扫描 磁共振成像 磁共振成像3D序列
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Mechanism prediction of Astragalus mongholicus Bunge and Angelica sinensis Diels in treating interstitial lung disease based on network pharmacology and molecular docking
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作者 Jun Du jian hao Wei Wei 《TMR药理学研究》 2023年4期1-9,共9页
Objective:To investigate the mechanism by which Astragalus mongholicus Bunge(AM),and Angelica sinensis Diels(AS)act in interstitial lung disease(ILD)based on computational prediction.Methods:We screened the ingredient... Objective:To investigate the mechanism by which Astragalus mongholicus Bunge(AM),and Angelica sinensis Diels(AS)act in interstitial lung disease(ILD)based on computational prediction.Methods:We screened the ingredients of AM and AS in PubMed,the Web of Science,China National Knowledge Infrastructure(CNKI)Databases,etc.Then obtained the potential effective components.By sharing the same molecular with ILD,we got the possible target genes for ILD treatment and constructed components–targets–disease network with Cytoscape software.The CTD(Comparative Toxicogenomics Database)database was used for GO and KEGG enrichment analysis of these target genes.Results:59 active ingredients that can be druggable were chosen from AM,67 active ingredients were chosen from AS.77 overlapping target genes for AM and ILD and 36 overlapping target genes for AS and ILD were acquired.The hub targets of AM were PTGS2,PTGS1,CDK2,MAOA,ESR1,TOP2A,GSK3B,ESR2,PPARG,NOS2,The hub targets of AS were PTGS2,GABRA1,PTGS1,CHRM1,SLC6A2,ADRA1B,ADRAIA,ADRB2,CHRM3,GABRA2,CHRM2.Quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,and 5-Hydroxycoumarin were the main active ingredients which have more effective targets.Prediction of the protein-protein interaction network showed PTGS2,GSK3B,PPARG,etc.,were the important predicted targets.The enriched KEGG pathways,including the Immune System,Metabolism of lipids and lipoproteins,Cytokine Signaling in the Immune system,Generic Transcription Pathway,The interleukin pathway,Metabolism of proteins,PI3K-Akt signaling pathway,Metabolic pathways,Innate Immune System,Neuroactive ligand-receptor interaction,Metabolism,GPCR downstream signaling,Amine ligand-binding receptors,Class A/1,Calcium signaling pathway.Molecular docking showed that quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,5-Hydroxycoumarin had good binding activities with PTGS2 and GSK3B,which mainly mediated PI3K/Akt and other important signaling pathways in the pathogenesis of ILD.Conclusion:The components in AS and AM share some common targets,such as PTGS2.AM and AS may ameliorate ILD through the PI3K-Akt signaling pathway which is mediated by GSK3B.PTGS2,PPARG may also be vital target genes in the treatment of ILD with AM and AS. 展开更多
关键词 Astragalus mongholicus Bunge Angelica sinensis Diels computational prediction interstitial lung disease PI3K-Akt signaling pathways
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A High-Performance Solid-State Na–CO_(2)Battery with Poly(Vinylidene Fluoride-co-Hexafluoropropylene)−Na_(3.2)Zr_(1.9)Mg_(0.1)Si_(2)PO_(12)Electrolyte
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作者 Liang Lu Chunwen Sun +5 位作者 jian hao Zelin Wang Sergio F.Mayer Maria Teresa Fernandez-Diıaz Jose Antonio Alonso Bingsuo Zou 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2023年第3期87-95,共9页
The recovery and utilization of carbon dioxide(CO_(2))is the key to achieve the targets of peak carbon dioxide emissions and carbon neutrality.The Na-CO_(2)battery made with cheap alkali metal sodium and greenhouse ga... The recovery and utilization of carbon dioxide(CO_(2))is the key to achieve the targets of peak carbon dioxide emissions and carbon neutrality.The Na-CO_(2)battery made with cheap alkali metal sodium and greenhouse gas CO_(2)is an effective strategy to consume CO_(2)and store clean renewable energy.However,the liquid electrolyte volatilization in the open battery system and inevitable dendrite growth restrict the application of Na-CO_(2)batteries.In this work,magnesium-doped Na_(3)Zr_(2)Si_(2)PO_(12)(NZSP)was studied as a solid electrolyte for solid-state Na-CO_(2)batteries.The ionic conductivity of Na_(3.2)Zr_(1.9)Mg_(0.1)Si_(2)PO_(12)reaches 1.16 mS cm^(−1)at room temperature by replacing Zr ions in Na_(3.2)Zr_(1.9)Mg_(0.1)Si_(2)PO_(12)with Mg ions,and the structural changes are analyzed by neutron powder diffraction.The composite electrolyte consisting of highly conductive Na_(3.2)Zr_(1.9)Mg_(0.1)Si_(2)PO_(12)and high processability poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)is utilized for the first time to assemble a solid-state Na-CO_(2)battery.The cell shows a full discharge capacity of 7720 mAh g^(−1)at 200 mA g^(−1).The middle gap voltage is lower than 2 V after 120 cycles at 200 mA g^(−1)and at a cut-off capacity of 500 mAh g^(−1).This work demonstrates a promising strategy to design high-performance solid-state Na-CO_(2)batteries. 展开更多
关键词 cycling stability ion transport Mg-doped NZSP neutron powder diffraction solid-state Na-CO_(2)batteries
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Mechanism prediction of Astragalus mongholicus Bunge and Angelica sinensis Diels in treating interstitial lung disease based on network pharmacology and molecular docking
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作者 Jun Du jian hao Wei Wei 《TMR Pharmacology Research》 2023年第4期1-9,共9页
Objective:To investigate the mechanism by which Astragalus mongholicus Bunge(AM),and Angelica sinensis Diels(AS)act in interstitial lung disease(ILD)based on computational prediction.Methods:We screened the ingredient... Objective:To investigate the mechanism by which Astragalus mongholicus Bunge(AM),and Angelica sinensis Diels(AS)act in interstitial lung disease(ILD)based on computational prediction.Methods:We screened the ingredients of AM and AS in PubMed,the Web of Science,China National Knowledge Infrastructure(CNKI)Databases,etc.Then obtained the potential effective components.By sharing the same molecular with ILD,we got the possible target genes for ILD treatment and constructed components–targets–disease network with Cytoscape software.The CTD(Comparative Toxicogenomics Database)database was used for GO and KEGG enrichment analysis of these target genes.Results:59 active ingredients that can be druggable were chosen from AM,67 active ingredients were chosen from AS.77 overlapping target genes for AM and ILD and 36 overlapping target genes for AS and ILD were acquired.The hub targets of AM were PTGS2,PTGS1,CDK2,MAOA,ESR1,TOP2A,GSK3B,ESR2,PPARG,NOS2,The hub targets of AS were PTGS2,GABRA1,PTGS1,CHRM1,SLC6A2,ADRA1B,ADRAIA,ADRB2,CHRM3,GABRA2,CHRM2.Quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,and 5-Hydroxycoumarin were the main active ingredients which have more effective targets.Prediction of the protein-protein interaction network showed PTGS2,GSK3B,PPARG,etc.,were the important predicted targets.The enriched KEGG pathways,including the Immune System,Metabolism of lipids and lipoproteins,Cytokine Signaling in the Immune system,Generic Transcription Pathway,The interleukin pathway,Metabolism of proteins,PI3K-Akt signaling pathway,Metabolic pathways,Innate Immune System,Neuroactive ligand-receptor interaction,Metabolism,GPCR downstream signaling,Amine ligand-binding receptors,Class A/1,Calcium signaling pathway.Molecular docking showed that quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,5-Hydroxycoumarin had good binding activities with PTGS2 and GSK3B,which mainly mediated PI3K/Akt and other important signaling pathways in the pathogenesis of ILD.Conclusion:The components in AS and AM share some common targets,such as PTGS2.AM and AS may ameliorate ILD through the PI3K-Akt signaling pathway which is mediated by GSK3B.PTGS2,PPARG may also be vital target genes in the treatment of ILD with AM and AS. 展开更多
关键词 Astragalus mongholicus Bunge Angelica sinensis Diels computational prediction interstitial lung disease PI3K-Akt signaling pathways
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多模型融合的输电线路绝缘子自爆故障检测 被引量:15
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作者 林志成 缪希仁 +1 位作者 江灏 陈静 《福州大学学报(自然科学版)》 CAS 北大核心 2020年第2期217-223,共7页
针对输电线路巡检图像中绝缘子自爆区域小、背景复杂与故障绝缘子类型复杂多样的特点,提出一种多模型融合计算的绝缘子自爆故障检测方法.通过分析现有绝缘子自爆故障检测算法差异性,选取检测性能差异较为明显的三个目标检测算法(Mask r... 针对输电线路巡检图像中绝缘子自爆区域小、背景复杂与故障绝缘子类型复杂多样的特点,提出一种多模型融合计算的绝缘子自爆故障检测方法.通过分析现有绝缘子自爆故障检测算法差异性,选取检测性能差异较为明显的三个目标检测算法(Mask rcnn、Retinanet、Yolov3),计算得到巡检图像中绝缘子自爆区域坐标及置信度.再利用多模型融合计算,融合各模型检测结果.最后实现架空输电线路无人机巡检图像中绝缘子自爆故障检测,得到绝缘子自爆故障检测综合评价值为94.81%.所提方法在平均准确率、召回率、准确率方面均高于单一模型检测结果.实验结果表明,本方法能有效实现架空输电线路无人机巡检图像中绝缘子自爆故障检测,对输电线路智能化巡检故障诊断具有一定参考价值. 展开更多
关键词 电力巡检 目标检测 多模型融合 绝缘子自爆 故障检测
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区域带动视角下农村电商精准扶贫作用机理
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作者 李琳 刘海波 +2 位作者 李文意 蹇皓 赵文敏 《中阿科技论坛(中英文)》 2020年第3期13-14,共2页
贫困问题自建国以来便得到广泛关注,农村电商扶贫作为精准扶贫工程之一,具有增收减贫、赋能增能等作用。然而,目前农村电商扶贫工作面临边际绩效递减、参与度下滑等困境,需深入探析农村电商促进贫困主体减贫脱贫的演变路径。本文从区域... 贫困问题自建国以来便得到广泛关注,农村电商扶贫作为精准扶贫工程之一,具有增收减贫、赋能增能等作用。然而,目前农村电商扶贫工作面临边际绩效递减、参与度下滑等困境,需深入探析农村电商促进贫困主体减贫脱贫的演变路径。本文从区域带动视角切入,引入潜变量电商环境、区域带动和减贫效果建立SEM模型,结合对湖南省永顺县的实地调研结果,揭示了区域带动的完全中介作用,提出推动农村电商扶贫工作高质量开展的建议。 展开更多
关键词 农村电商 精准扶贫 机理分析 SEM模型
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3D-ASL在脑胶质瘤术后放疗后复发以及放射性脑损伤中的诊断应用 被引量:2
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作者 曾斐 肖云龙 +3 位作者 简昊 李志国 万林 刘小涛 《当代医学》 2019年第23期9-11,共3页
目的探讨3D-ASL在脑胶质瘤术后放疗后复发以及放射性脑损伤中的诊断应用。方法选取2016年1月至2018年5月本院收治的脑胶质瘤术后放疗后复发患者38例,所有患者采取常规MRI增强扫描与3D-ASL检查,按照术后复发与放射性损伤分为术后复发组(1... 目的探讨3D-ASL在脑胶质瘤术后放疗后复发以及放射性脑损伤中的诊断应用。方法选取2016年1月至2018年5月本院收治的脑胶质瘤术后放疗后复发患者38例,所有患者采取常规MRI增强扫描与3D-ASL检查,按照术后复发与放射性损伤分为术后复发组(16例)与放射性损伤组(22例),放疗诊断异常强化区域与侧正常脑组织的脑血流量(CBF)值与强化病灶中心区、边缘区的平均脑血流量(rCBF)、相对平均表现扩散系数(rADC)比值。结果38例采取常规MRI增强扫描后显示异常强化灶,其中术后复发16例,放射性损伤22例;复发患者平均rCBF值(2.18±0.27)与放射性脑损伤患者平均rCBF值(0.89±0.22),组间差异有统计学意义(P<0.05);复发患者强化中心区、边缘区的rCBF值显著高于放射性脑损伤患者;复发患者rADC比值显著低于放射性脑损伤患者,组间差异有统计学意义(P<0.05)。结论脑胶质瘤的复发与放射性脑损伤会导致病变区域局部血脑屏障显著侵损,且造影剂集中于局部,显示局部强化与周围水肿,3D-ASL以水为内源性示踪剂进行分散,掌握病变区域微血管密度与血流灌注现状,是诊断胶质瘤术后、放疗后肿瘤复发与放射性脑侵害的有效方式。 展开更多
关键词 脑胶质瘤 复发 放射性脑损伤
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Deferoxamine promotes recovery of traumatic spinal cord injury by inhibiting ferroptosis 被引量:36
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作者 Xue Yao Yan Zhang +12 位作者 jian hao Hui-Quan Duan Chen-Xi Zhao Chao Sun Bo Li Bao-You Fan Xu Wang Wen-Xiang Li Xuan-hao Fu Yong Hu Chang Liu Xiao-Hong Kong Shi-Qing Feng 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第3期532-541,共10页
Ferroptosis is an iron-dependent novel cell death pathway. Deferoxamine, a ferroptosis inhibitor, has been reported to promote spinal cord injury repair. It has yet to be clarified whether ferroptosis inhibition repre... Ferroptosis is an iron-dependent novel cell death pathway. Deferoxamine, a ferroptosis inhibitor, has been reported to promote spinal cord injury repair. It has yet to be clarified whether ferroptosis inhibition represents the mechanism of action of Deferoxamine on spinal cord injury recovery. A rat model of Deferoxamine at thoracic 10 segment was established using a modified Allen's method. Ninety 8-week-old female Wistar rats were used. Rats in the Deferoxamine group were intraperitoneally injected with 100 mg/kg Deferoxamine 30 minutes before injury. Simultaneously, the Sham and Deferoxamine groups served as controls. Drug administration was conducted for 7 consecutive days. The results were as follows:(1) Electron microscopy revealed shrunken mitochondria in the spinal cord injury group.(2) The Basso, Beattie and Bresnahan locomotor rating score showed that recovery of the hindlimb was remarkably better in the Deferoxamine group than in the spinal cord injury group.(3) The iron concentration was lower in the Deferoxamine group than in the spinal cord injury group after injury.(4) Western blot assay revealed that, compared with the spinal cord injury group, GPX4, xCT, and glutathione expression was markedly increased in the Deferoxamine group.(5) Real-time polymerase chain reaction revealed that, compared with the Deferoxamine group, mRNA levels of ferroptosis-related genes Acyl-CoA synthetase family member 2(ACSF2) and iron-responsive element-binding protein 2(IREB2) were up-regulated in the Deferoxamine group.(6) Deferoxamine increased survival of neurons and inhibited gliosis. These findings confirm that Deferoxamine can repair spinal cord injury by inhibiting ferroptosis. Targeting ferroptosis is therefore a promising therapeutic approach for spinal cord injury. 展开更多
关键词 nerve REGENERATION iron spinal CORD INJURY secondary INJURY ferroptosis DEFEROXAMINE GPX4 xCT treatment ASTROGLIOSIS lipid PEROXIDATION neural REGENERATION
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Mechanisms underlying the promotion of functional recovery by deferoxamine after spinal cord injury in rats 被引量:9
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作者 jian hao Bo Li +8 位作者 Hui-quan Duan Chen-xi Zhao Yan Zhang Chao Sun Bin Pan Chang Liu Xiao-hong Kong Xue Yao Shi-qing Feng 《Neural Regeneration Research》 SCIE CAS CSCD 2017年第6期959-968,共10页
Deferoxamine, a clinically safe drug used for treating iron overload, also repairs spinal cord injury although the mechanism for this action remains unknown. Here, we determined whether deferoxamine was therapeutic in... Deferoxamine, a clinically safe drug used for treating iron overload, also repairs spinal cord injury although the mechanism for this action remains unknown. Here, we determined whether deferoxamine was therapeutic in a rat model of spinal cord injury and explored potential mechanisms for this effect. Spinal cord injury was induced by impacting the spinal cord at the thoracic T10 vertebra level. One group of injured rats received deferoxamine, a second injured group received saline, and a third group was sham operated. Both 2 days and 2 weeks after spinal cord injury, total iron ion levels and protein expression levels of the proinflammatory cytokines tumor necrosis factor-α and interleukin-1β and the pro-apoptotic protein caspase-3 in the spinal cords of the injured deferoxamine-treated rats were significantly lower than those in the injured saline-treated group. The percentage of the area positive for glial fibrillary acidic protein immunoreactivity and the number of terminal deoxynucleotidyl transferase d UTP nick end labeling-positive cells were also significantly decreased both 2 days and 2 weeks post injury, while the number of Neu N-positive cells and the percentage of the area positive for the oligodendrocyte marker CNPase were increased in the injured deferoxamine-treated rats. At 14–56 days post injury, hind limb motor function in the deferoxamine-treated rats was superior to that in the saline-treated rats. These results suggest that deferoxamine decreases total iron ion, tumor necrosis factor-α, interleukin-1β, and caspase-3 expression levels after spinal cord injury and inhibits apoptosis and glial scar formation to promote motor function recovery. 展开更多
关键词 铁离子浓度 脊髓损伤 大鼠 机制 功能恢复 caspase-3 肿瘤坏死因子-α 白细胞介素-1Β
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Recent advances in network pharmacology applications in Chinese herbal medicine 被引量:4
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作者 jian hao Shi-Jun Li 《Traditional Medicine Research》 2018年第6期260-272,共13页
网络药理学是基于系统生物学理论和生物系统网络分析来设计药物的一门新兴学科。它综合探索药物对疾病网络的干预和影响,揭示多分子药物协同治疗疾病的奥秘。这些概念反映了多组分、多靶点和系统调控的思想,与中医辨证论治的研究思路有... 网络药理学是基于系统生物学理论和生物系统网络分析来设计药物的一门新兴学科。它综合探索药物对疾病网络的干预和影响,揭示多分子药物协同治疗疾病的奥秘。这些概念反映了多组分、多靶点和系统调控的思想,与中医辨证论治的研究思路有许多相似之处,强调对病因病机的全面认识。网络药理学可以用来预测和鉴别中药的靶标和有效成分,阐明其作用机制,系统地解释处方的用药规律,探索真实世界处方的规律,发现新的适应症和新的活性化合物,研究药物重新定位等。本文系统总结了网络药理学在中药研究中的应用,展示了网络药理学在中药研究中的重要价值。 展开更多
关键词 网络药理学 中药 应用 多成分药物 中医
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Efficient CO_(2) electroreduction over N-doped hieratically porous carbon derived from petroleum pitch 被引量:3
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作者 Hui Ning Dianliang Guo +7 位作者 Xiaoshan Wang Zhonghao Tan Wenhang Wang Zhongxue Yang Linqing Li Qingshan Zhao jian hao Mingbo Wu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第5期113-120,共8页
Developing of economic and efficient catalysts is critical for the application of electroreduction of carbon dioxide to highly valuable chemicals.Herein,we present a facile method to synthesize N-doped hieratically po... Developing of economic and efficient catalysts is critical for the application of electroreduction of carbon dioxide to highly valuable chemicals.Herein,we present a facile method to synthesize N-doped hieratically porous carbon through pyrolysis of petroleum pitch followed by ammonia etching.We found mesopores are favored formation by removing of asphaltene from petroleum pitch during the carbonation process.Simultaneously,ammonia etching can not only increase the pyridinic-N content,but also upgrade the ratio of meso-to micro-pores of carbon materials.Using the N-doped hieratically porous carbon as catalyst for carbon dioxide electroreduction,the Faradaic efficiency of carbon monoxide reaches 83%at-0.9 V vs.the reversible hydrogen electrode(RHE)in 0.1 M KHCO_(3).This superior performance is attributed to the synergistic effects of highly pyridinic-N content in conjunction with the hieratically porous architecture,rendering abundant exposed and accessible active sites for electroreduction of CO_(2).Our work provides a new strategy for the large-scale preparation of high-performance,low-cost catalysts for CO_(2) electroreduction. 展开更多
关键词 Petroleum pitch Carbon dioxide ELECTROREDUCTION Porous carbon
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抗苗勒氏管激素(AMH)与多囊卵巢综合征相关性的临床研究 被引量:7
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作者 丁娇 邵军晖 +3 位作者 简皓 胡春芳 曾丽 杨琳 《当代医学》 2018年第28期93-95,共3页
目的探讨抗苗勒氏管激素(Anti Miillerian Hormone,AMH)和多囊卵巢综合征(polycystic ovarian syndrome,PCOS)之间的相关性,以便为临床诊治提供依据。方法将本院生殖中心2016年1月~2018年1月就诊的PCOS患者38例作为实验组,同期收治的健... 目的探讨抗苗勒氏管激素(Anti Miillerian Hormone,AMH)和多囊卵巢综合征(polycystic ovarian syndrome,PCOS)之间的相关性,以便为临床诊治提供依据。方法将本院生殖中心2016年1月~2018年1月就诊的PCOS患者38例作为实验组,同期收治的健康体检女性22例作为对照组,对两组对象资料进行分析,计算体重指数(body mass index,BMI),测定卵泡数目(antral follicle count,AFC)、黄体生成素(luteinizing hormone,LH)、卵泡刺激素(Follicle-stimulating hormone,FSH)、睾酮(testosteron,T)、雌二醇(estrogen,E2)及血清AMH水平,并实施统计学分析。结果实验组AFC、LH、T、血清AMH水平均明显高于对照组(P<0.05),而BMI、FSH、E2稍高于对照组,但比较差异无统计学意义;多囊卵巢综合征患者AFC、LH、T与血清AMH水平呈正相关,而BMI、FSH、E2与血清AMH相关性不显著。结论多囊卵巢综合征患者与正常女性比较,存在AFC、LH、T、血清AMH水平升高现象,且AFC、LH、T与血清AMH水平呈正相关,需引起重视。 展开更多
关键词 抗苗勒氏管激素 多囊卵巢综合征 卵泡数目 黄体生成素 相关性
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低分子肝素钠联合地屈孕酮治疗复发性流产疗效评价 被引量:6
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作者 丁娇 杨琳 +1 位作者 简皓 邵军晖 《上海医药》 CAS 2020年第22期19-21,42,共4页
目的:探讨低分子肝素钠联合地屈孕酮治疗复发性流产的疗效。方法:收集2017年5月1日—2019年1月31日收治复发性流产患者102例,分为观察组和对照组各51例。两组均给予基础治疗,对照组口服地屈孕酮治疗,10 mg/次,3次/d,至孕12周;观察组口... 目的:探讨低分子肝素钠联合地屈孕酮治疗复发性流产的疗效。方法:收集2017年5月1日—2019年1月31日收治复发性流产患者102例,分为观察组和对照组各51例。两组均给予基础治疗,对照组口服地屈孕酮治疗,10 mg/次,3次/d,至孕12周;观察组口服地屈孕酮联合低分子肝素钠治疗,4250 IU皮下注射,2次/d,至孕12周。观察两组妊娠结局、凝血功能及子宫动脉阻力指数变化情况。结果:观察组妊娠结局良好,保胎成功率为88.24%(45/51),高于对照组的60.78%(31/51,P<0.05)。观察组凝血功能及子宫动脉阻力指数改善较好,活化部分凝血活酶时间水平高于干预前和对照组,血小板计数、纤维蛋白原水平及子宫动脉阻力指数均低于干预前和对照组(P<0.05)。观察组子宫动脉阻力指数改善较好,收缩舒张期比值、阻力指数、搏动指数均低于干预前和对照组(P<0.05)。结论:低分子肝素钠联合地屈孕酮治疗复发性流产效果明显,可以提高保胎率,改善患者的凝血功能状况,能缓解患者的血栓前状态,改善妊娠结局,不良反应少,值得临床推广应用。 展开更多
关键词 复发性流产 低分子肝素钠 地屈孕酮 疗效
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TGF-β signaling in hepatocellular carcinoma suppression and progression 被引量:1
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作者 jian hao Dan Chen 《Traditional Medicine Research》 2018年第1期10-21,共12页
细胞信号通路紊乱在原发性肝细胞癌发生发展中发挥着不容忽视的作用.其中TGF-β信号通路的活化在原发性肝癌中的作用引起广大学者的兴趣.在肿瘤早期,TGF-β抑制肿瘤细胞的增殖,诱导细胞凋亡,但随着肿瘤进展,肿瘤细胞内TGF-β受体或其下... 细胞信号通路紊乱在原发性肝细胞癌发生发展中发挥着不容忽视的作用.其中TGF-β信号通路的活化在原发性肝癌中的作用引起广大学者的兴趣.在肿瘤早期,TGF-β抑制肿瘤细胞的增殖,诱导细胞凋亡,但随着肿瘤进展,肿瘤细胞内TGF-β受体或其下游的Smad基因突变积累,其抑制作用减弱.在肿瘤晚期,TGF-β通过促进肿瘤细胞侵袭,参与免疫抑制,重建微环境基质,发挥着促进肿瘤进展的作用.因此,我们通过探讨TGF-β在肝细胞癌中抑制作用和促进作用的机制,来进一步研究TGF-β在肿瘤进展中,由抑制作用转化为促进作用的原因,为肿瘤进展和治疗提供新的思路.同时我们还论述了抗肿瘤草药在TGF信号通路中的作用. 展开更多
关键词 TGF-Β 肝癌 抑制 促进 抗肿瘤中药
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Nephrotoxicity and carcinogenesis of aristolochic acids and their derivates 被引量:1
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作者 Zi-Qi Jin Jin-Wei Yuan +1 位作者 jian hao Xiong-Zhi Wu 《Traditional Medicine Research》 2018年第1期1-9,共9页
马兜铃酸(Aristolochic acids,AAs),主要是由来源于马兜铃科属植物的8-methoxy-6-nitro-phenanthro-(3,4-d)-1,3-dioxolo-5-carboxylicacid(Aristolochic acids II ,AAI),6-nitro-phenanthro-(3,4-d)-1,3-dioxolo-5-carboxylic ... 马兜铃酸(Aristolochic acids,AAs),主要是由来源于马兜铃科属植物的8-methoxy-6-nitro-phenanthro-(3,4-d)-1,3-dioxolo-5-carboxylicacid(Aristolochic acids II ,AAI),6-nitro-phenanthro-(3,4-d)-1,3-dioxolo-5-carboxylic acid(Aristolochi cacids II,AAII)组成的天然混合物,能够引起马兜铃酸肾病和上尿路上皮癌.本文概述了AAs及其衍生物的肾毒性及致癌性.AAs肾毒性能够诱导肾小管上皮细胞凋亡及氧化应激的发生,并能抑制水通道蛋白的表达.AAs还可以降低肾小管上皮细胞急性损伤后的修复能力,并通过TGF-β-Smad信号和促进巨噬细胞的迁移进-步促进肾脏纤维化.另外,AAs的致癌性可能是因为导致某些肿瘤抑癌基因或原癌基因突变的DNA加合物的形成,和不同个体的细胞色素P450在AAI代谢中的不同催化能力导致的. 展开更多
关键词 马兜铃酸 马兜铃酸肾病 肾毒性 致癌性
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The role of acidic microenvironment in the tumor aggressive phenotypes and the treatment 被引量:1
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作者 jian hao 《Traditional Medicine Research》 2020年第1期4-6,共3页
Recently,the scammer who advocated"acid constitution"as the source of all diseases was fined 105 million US dollars,and the"acid-base balance"theory he founded was also criticized.Although the"... Recently,the scammer who advocated"acid constitution"as the source of all diseases was fined 105 million US dollars,and the"acid-base balance"theory he founded was also criticized.Although the"acid constitution"of the human body is full of pseudoscience,many tumors are indeed"acid constitution".Increased glycolysis,hypoxia,and insufficient tissue perfusion as well as a large amount of acid and metabolite metabolites that accumulated in the tumor microenvironment,making the tumor microenvironment acidic[1–3].Microenvironment acidification plays an important role in tumor progression and can provide a favorable environment for tumor cell generation[4].Acidosis is one of the basic characteristics of tumor microenvironment.Unlike normal cells,cancer cells can adapt to a low pH environment by increasing glycolysis,while activating the activity and expression of proton transporters that normalize the pH in the cell[1–4].Acidosis-driven adaptation also triggers the emergence of aggressive tumor cells in subpopulations that exhibit increased invasion,proliferation,and resistance[5].Acidosis can also promote immune escape and thus maintain tumor growth[6,7]. 展开更多
关键词 INVASION ACIDIC TREATMENT
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五味消毒饮灌肠配合VLH-D仪治疗盆腔炎性疾病后遗症临床研究 被引量:3
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作者 胡春芳 简皓 毛连芬 《中国中医药现代远程教育》 2019年第22期117-119,共3页
目的探讨五味消毒饮加减灌肠配合VLH-D仪治疗盆腔炎性疾病后遗症的临床疗效。方法选取2016年3月—2018年12月在新余市妇幼保健院进行治疗的126例患者,按照治疗方案不同分为观察组、中药对照组、西药对照组,各42例。观察组五味消毒饮加... 目的探讨五味消毒饮加减灌肠配合VLH-D仪治疗盆腔炎性疾病后遗症的临床疗效。方法选取2016年3月—2018年12月在新余市妇幼保健院进行治疗的126例患者,按照治疗方案不同分为观察组、中药对照组、西药对照组,各42例。观察组五味消毒饮加减灌肠配合VLH-D仪治疗;中药对照组口服中药妇科千金胶囊治疗;西药对照组盐酸多西环素片治疗。比较3组患者的治疗效果和受孕率。结果观察组总有效率和受孕率均显著高于其余2组,P<0.05。结论五味消毒饮加减灌肠配合VLH-D仪治疗盆腔炎性疾病后遗症疗效确切,应用价值较高。 展开更多
关键词 五味消毒饮 灌肠 VLH-D仪 盆腔炎性疾病 后遗症 中西医结合疗法
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