检索结果-南通市图书馆

Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation

引用

Green Energy & Environment 2025年第1期10卷 203-213页

作者： Muning Chen Jiemei Zhou Jing Ma Weigang zheng Guanying dong Xin Li Zhihong Tian Yatao Zhang Jing Wang Yong Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou450001HenanChina State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering Nanjing Tech UniversityNanjing211816JiangsuChina Singapore Membrane Technology Centre Nanyang Environment and Water Research InstituteNanyang Technological UniversitySingapore637141Singapore Engineering Research Center for Nanomaterials Henan UniversityKaifeng475004HenanChina State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Energy and Environment Southeast UniversityNanjing210096JiangsuChina

Mixed matrix membranes(MMMs)have demonstrated significant promise in energy-intensive gas separations by amalgamating the unique properties of fillers with the facile processability of ***,achieving a simultaneous enhancement of permeability and selectivity remains a formidable challenge,due to the difficulty of achieving an optimal match between polymers and *** this study,we incorporate a porous carbon-based zinc oxide composite(C@ZnO)into high-permeability polymers of intrinsic microporosity(PIMs)to fabricate *** dipole–dipole interaction between C@ZnO and PIMs ensures their exceptional compatibility,mitigating the formation of non-selective voids in the resulting ***,C@ZnO with abundant interconnected pores can provide additional low-resistance pathways for gas transport in *** a result,the CO_(2) permeability of the optimized C@ZnO/PIM-1 MMMs is elevated to 13,215 barrer,while the CO_(2)/N_(2) and CO_(2)/CH4 selectivity reached 21.5 and 14.4,respectively,substantially surpassing the 2008 Robeson upper ***,molecular simulation results further corroborate that the augmented membrane gas selectivity is attributed to the superior CO_(2) affinity of C@*** summary,we believe that this work not only expands the application of MMMs for gas separation but also heralds a paradigm shift in the application of porous carbon materials.

关键词： Mixed matrix membranes Polymers of intrinsic microporosity CO_(2)separation Porous carbon materials

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

青蕨植物化学成分的研究(英文)

引用

西北植物学报 2005年第4期25卷 781-785页

作者：胡浩斌郑旭东陇东学院化学系甘肃庆阳745000

从青蕨根部的乙酸乙酯提取物中分离得到4个化合物.通过化学及波谱分析鉴定其结构为:saucerneolD1,dehydrogoniothalamin2,1-acetoxyl-2-piperonyl-6-[6-methoxyl-piperonyl]-3,7-dioxabicyclo-[3,3,0]-octane3and5,5′-dihydroxy-3-methoxy-6,8,3″,3″-tetramethylpyran-3′,4′flavone-7-O-[β-D-apiofuranosyl-1→6]-β-D-glucopyranoside4.其中化合物4为新化合物,化合物1为首次从该属植物中分离得到.

关键词：青蕨 saucerneol D 5,5′-dihydroxy-3-methoxy-6,8,3″,3″-tetramethylpyran-(3′,4′)flavone-7-O-[β-D-apiofuranosyl-(1→6)]-β-D-glucopyranoside

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

香芝麻蒿挥发油的提取分离及抑菌作用

引用

中国医院药学杂志 2006年第1期26卷 14-16页

作者：胡浩斌郑旭东陇东学院化学系甘肃庆阳745000

目的:研究香芝麻蒿挥发油的提取分离方法、化学成分及抑菌作用。方法:通过超临界流体二氧化碳萃取-分子蒸馏法提取和分离香芝麻蒿挥发油,并运用GC-MS法分析鉴定其化学成分。采用琼脂平板抑菌法,以苯甲酸为对照样品对挥发油的抑菌作用进... 详细信息

目的:研究香芝麻蒿挥发油的提取分离方法、化学成分及抑菌作用。方法:通过超临界流体二氧化碳萃取-分子蒸馏法提取和分离香芝麻蒿挥发油,并运用GC-MS法分析鉴定其化学成分。采用琼脂平板抑菌法,以苯甲酸为对照样品对挥发油的抑菌作用进行研究。结果:从超临界流体二氧化碳萃取物中共分离、鉴定出了35种化学成分,其中主要成分为单萜、倍半萜及其含氧衍生物,对某些细菌的抑菌作用比苯甲酸强。结论:本方法具有稳定可靠、低温高效、无污染等优点,适用于中草药有效成分的提取分离。香芝麻蒿挥发油对常见的细菌有较好的抑菌作用。

关键词：香芝麻蒿超临界流体二氧化碳分子蒸馏法挥发油抑菌作用

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

氯磷定对不同途径有机磷中毒胆碱酯酶活力恢复情况的临床研究

引用

中国医院药学杂志 2014年第18期34卷 1603-1605页

作者：郑东旭王希敏福建医科大学附属第二医院检验科福建泉州362000

目的:探讨氯磷定对不同途径有机磷中毒胆碱酯酶活力恢复情况。方法:分析2008年1月-2013年1月接受治疗的急性有机磷中毒患者的临床资料。依据患者中毒途径不同将患者分为皮肤组(33例)、口服组(42例);另选取30例健康体检者作为对照组。结... 详细信息

目的:探讨氯磷定对不同途径有机磷中毒胆碱酯酶活力恢复情况。方法:分析2008年1月-2013年1月接受治疗的急性有机磷中毒患者的临床资料。依据患者中毒途径不同将患者分为皮肤组(33例)、口服组(42例);另选取30例健康体检者作为对照组。结果:入院时,皮肤组、口服组轻度、口服组中度及口服组重度患者血清ChE水平均显著低于对照组患者,相比较差异均具有统计学意义(P<0.05)。口服组在入院后第2,3,4,5天时的血清ChE水平均显著高于皮肤组(P<0.05)。口服组血清ChE平均升高速率显著高于皮肤组(1.28±0.17 vs 1.05±0.09;t=10.090,P<0.001)。入院第1,2,3,4天时,皮肤组中毒指数(共8分,分数越大表示患者中毒程度越重)显著低于口服组,相比较差异具有统计学意义(P<0.05);入院5 d时,2组患者中毒指数相比较差异无统计学意义(t=1.702,P=0.093)。结论:急性有机磷中毒的救治中,血清ChE在判断经口中毒患者的疗效及预后上较佳。但经皮肤途径中毒的患者血清ChE的恢复滞后于临床症状的改善,因而用血清ChE判断其疗效有欠缺。

关键词：有机磷中毒胆碱酯酶氯磷定疗效

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ammonia-induced CuO/13X for H_(2)S removal from simulated blast furnace gas at low temperature

引用

Green Energy & Environment 2025年第1期10卷 139-149页

作者： Erping Cao Yuhua zheng Hao Zhang Jianshan Wang Yuran Li Tingyu Zhu Zhan-guo Zhang Guangwen xu Yanbin Cui State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization PanGang Group Research Institute Co.Ltd.Panzhihua Sichuan617000China Shenyang University of Chemical Technology Shenyang110142China University of Chinese Academy of Sciences Beijing 100049China

Blast furnace gas(BFG)is an important by-product energy for the iron and steel industry and has been widely used for heating or electricity ***,the undesirable contaminants in BFG(especially H_(2)S)generate harmful environmental *** desulfurization of BFG is urgent for integrated steel plants due to the stringent ultra-low emission *** with other desulfurization materials,zeolite-based adsorbents represent a viable option with low costs and long service *** this study,an ammonia-induced CuO modified 13X adsorbent(NH3–CuO/13X)was prepared for H_(2)S removal from simulated BFG at low *** XRD,H_(2)-TPR and TEM analysis proved that smaller CuO particles were formed and the dispersion of Cu on the surface of 13X zeolite was improved via the induction of *** on H_(2)S adsorption performance of the adsorbent was carried out using simulated BFG,and the results showed that NH3–CuO/13X-3 has better breakthrough sulfur capacity,which was more than twice the sulfur capacity of CuO/*** is proposed that the enhanced desulfurization performance of NH3–CuO/13X is attributed to an abundant pore of 13X,and combined action of 13X and *** work provided an effective way to improve the sulfur capacity of zeolite-based adsorbents via impregnation method by ammonia induction.

关键词： Blast furnace gas Desulfurization Ammonia-induced CuO 13X zeolite

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

短柄五加挥发油化学成分及抑菌作用研究

引用

中药材 2009年第1期32卷 67-70页

作者：胡怀生胡浩斌郑旭东陇东学院化学化工学院甘肃庆阳745000

目的:研究短柄五加(Acanthopanax brachypus Harms)挥发油的化学成分和抑菌活性。方法:采用水蒸气蒸馏法提取短柄五加茎中的挥发油,通过体外抑菌试验法研究了其抑菌活性;经气相色谱-质谱技术分离和鉴定,用归一化法测定其相对百分含量。... 详细信息

目的:研究短柄五加(Acanthopanax brachypus Harms)挥发油的化学成分和抑菌活性。方法:采用水蒸气蒸馏法提取短柄五加茎中的挥发油,通过体外抑菌试验法研究了其抑菌活性;经气相色谱-质谱技术分离和鉴定,用归一化法测定其相对百分含量。结果:挥发油对供试菌种大肠杆菌、金黄色葡萄球菌、枯草芽孢杆菌、绿脓杆菌、白色念珠菌均有明显的抑制作用,对黑曲霉无抑菌作用;挥发油中共分离和鉴定出了47种化学成分,占挥发油的91.37%。其中主要成分有庚酸(7.05%)、香草醛(6.09%)、反式-氧化-芳樟醇(6.07%)、邻异丙基甲苯(5.83%)、α-非兰烯(5.14%)、棕榈酸(5.15%)和β-香叶烯(5.07%)。结论:短柄五加挥发油具有多种活性成分,有一定的抑菌活性,为进一步研究其药理作用提供了科学依据。

关键词：短柄五加挥发油化学成分气相色谱-质谱抑菌作用

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Visualization of the protective role of estrogen against female liver fibrosis via an ER viscosity NIR fluorescent probe

引用

Science China Chemistry 2025年第1期68卷 360-368页

作者： zheng Liu Changyu Zhang Zipeng Li Wanying Ma Jia Liu Xiang Xia Ning xu Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng State Key Laboratory of Fine Chemicals Dalian University of Technology Ningbo Institute of Dalian University of Technology

Endoplasmic reticulum(ER) viscosity has emerged as a new potential biomarker for hepatic fibrosis(HF). Herein, we report the first ER-targeting viscosity-responsive near-infrared(NIR) fluorescent probe HBT-PP for investigations of HF *** twisted intramolecular charge transfer(TICT) and the excited state intramolecular proton transfer(ESIPT) are combined to endow HBT-PP with the selective response towards viscosity(～62-fold) and a super large stokes shift(～320 nm). HBT-PP mainly targets organelle ER and is able to image the drug-or alcohol-induced viscosity elevation in living cells. Significantly,HBT-PP was successfully applied to visualize the gender difference in HF and the protective role of estrogen in restraining HF progression. Of note, after 10 min of stain with HBT-PP, HF lesions showed a stage-based response, indicating the potential of this probe in fast and early diagnosis of HF. These results clearly demonstrated the promising application of HBT-PP as a new tool for exploring ER viscosity-involved physiological and pathological processes.

关键词： NIR fluorescent probe ER viscosity hepatic fibrosis gender difference estrogen

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

带加劲肋多腔双层钢板-混凝土组合剪力墙的抗震性能试验

引用

工程力学 2017年第12期34卷 150-161页

作者：汤序霖丁昌银陈庆军蔡健邓恺坚郑旭东华南理工大学土木与交通学院广东广州510641 广州机施建设集团有限公司广东广州510115 亚热带建筑科学国家重点实验室广东广州510641

提出一种带加劲肋多腔双层钢板-混凝土组合剪力墙,并进行5个1∶4模型试件的拟静力试验,研究该形式组合剪力墙在不同轴压比、剪跨比下的破坏形式、滞回性能、变形能力以及耗能能力。试验结果表明:带加劲肋多腔双层钢板-混凝土组合剪力墙... 详细信息

提出一种带加劲肋多腔双层钢板-混凝土组合剪力墙,并进行5个1∶4模型试件的拟静力试验,研究该形式组合剪力墙在不同轴压比、剪跨比下的破坏形式、滞回性能、变形能力以及耗能能力。试验结果表明:带加劲肋多腔双层钢板-混凝土组合剪力墙抗震性能良好,5个试件的屈服位移角平均值为1/114,极限位移角平均值为1/48;增大轴压比可提高试件的承载力,但其抗震性能有所降低;减小剪跨比,试件的承载力和刚度有较大幅度提高,其抗震性能变化不明显。采用有限元软件ABAQUS建立该形式双层钢板-混凝土组合剪力墙模型并进行分析,其计算结果与试验吻合良好。

关键词：钢-混凝土组合结构组合剪力墙双层钢板拟静力试验抗震性能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats

引用

Neural Regeneration Research 2025年第5期20卷 1495-1504页

作者： Yunting Xiang Xiangxin Xing xuyun Hua Yuwen Zhang Xin xue Jiajia Wu Mouxiong zheng He Wang Jianguang xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected ***,differences among reconstruction strategies at the brain network level have not been *** study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve ***–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper ***-state brain functional magnetic resonance imaging was obtained 7 months after *** independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the *** in intra-network resting-state functional connectivity were compared among the *** muscle reinnervation was assessed by behavioral observation(elbow flexion)and *** results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural *** repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor *** thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve *** areas related to cognition and emotion were enhanced after end-to-side nerve *** study revealed important brain networks related to different nerve *** networks may be potential targets for enhancing motor recovery.

关键词： brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

动手、动脑与动心:创客教育的三重境界及其融合

引用

现代教育技术 2021年第7期31卷 120-126页

作者：王世娟陈荣郑旭东华中师范大学人工智能教育学部湖北武汉430079

近年来,创客教育风起云涌,成为信息化背景下新一轮教育教学改革创新发展进程中一道靓丽的风景线。在此背景下,文章首先引入创客教育面临的“有做而没有学”问题,揭示了以“动手”为核心的“做中学”这一教育神话的幻象,阐释了创客教育... 详细信息

近年来,创客教育风起云涌,成为信息化背景下新一轮教育教学改革创新发展进程中一道靓丽的风景线。在此背景下,文章首先引入创客教育面临的“有做而没有学”问题,揭示了以“动手”为核心的“做中学”这一教育神话的幻象,阐释了创客教育要规避的陷阱。随后,文章围绕“以动手促动脑”这一目标,探讨了劳动过程的双向建构机制对创客教育的启示。最后,文章基于“创中学”的逻辑,强调以技术拨动儿童心灵的琴弦,实现动手、动脑与动心的交织融合。文章的研究旨在推动创客教育实现“手脑协调”、“做学共进”的重要目标,以推动教育改革事业的创新发展。

关键词：创客教育动手动脑动心 “做中学” “创中学”

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：