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Preparation of mesoporous titania particles using ionic liquid dissolving starch as templates

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Rare Metals 2009年第5期28卷 434-438页

作者： CHEN Chunming RAN Jingwen YE qiunan Department of Chemistry Hanshan Normal University Chaozhou 521041 China

A mesoporous titania photocatalyst was prepared via calcining the solution of ionic liquid （1-methyl-3-butyl imidazolium bromide, [BMIM]Br） containing tetrabutyl titanate （TBT） and starch. The microstructure of the prepared mesoporous titania was characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and N2 adsorption/desorption isotherm. The results indicate that the resulting mesoporous titania has a grain size of about 13.9 nm, a special surface area of 106 m2/g, and a pore volume of 0.22 cm3/g, and the pore size can be adjusted by the concentration of starch in ionic liquid. The photocatalytic activity of mesoporous titania in the degradation of methyl orange solution was determined. The effect of the specific surface area of mesoporous titania on the photocatalytic activity was also studied. The prepared mesoporous titania exhibits a high catalytic activity.

关键词： inorganic solid state chemistry mesoporous titania synthesis ionic liquid photocatalyst

Bubble coalescence efficiency near multi-orifice plate

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Chinese Journal of Chemical Engineering 2019年第8期27卷 1765-1776页

作者： Jiming Wen qiunan Sun Zhongning Sun Haifeng Gu Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering University

Bubble coalescence reduces specific area and weakens the work performance of bubble column. The bubble coalescence near gas sparger which is caused mainly by bubble growing is different from the ones occurring in major liquid. Bubble coalescence efficiency near gas sparger is influenced by many factors including sparger configuration, gas flow rate, bubble deformation, solution composition, etc. This work has conducted a set of visual experiments to study the coalescence characteristics near multi-orifice plate. The experiment parameters cover a wide range of conditions including large scope of gas flow rate,different kinds of solution and orifice configurations. The experimental results suggest that coalescence time is applicable to reflect the influence of the pitch of orifices and gas flow rate on bubble coalescence efficiency. As the number of orifices increases, bubble coalescence efficiency is reduced by the disturbance from the bubbles at adjacent orifices. A hindering coefficient is used to consider the hindering effect of additives on bubble coalescence efficiency. Finally a new calculation expression is established to predict bubble coalescence efficiency near multi-orifice plate whose fundamental form is based on the logistic curve of binary response. The calculated values that refer to this calculation expression are well consistent with the experimental results.

关键词： Bubble column Bubble coalescence efficiency Multi-orifice plate Coalescence time

The effect of multi-orifice plate configuration on bubble detachment volume

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Chinese Journal of Chemical Engineering 2019年第1期27卷 72-84页

作者： Jiming Wen qiunan Sun Zhongning Sun Haifeng Gu Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering University

The multi-orifice plate gas sparger, mainly composed of a multi-orifice plate and a gas chamber, is one of the most common sparger *** aeration performance of multi-orifice plate has a close relation with the multiorifice plate *** addition, the weeping phenomenon has a considerable influence on the gas chamber condition which affects the bubble detachment volume *** paper conducts a set of visual experiments to study the influence of multi-orifice configuration and gas chamber condition on the aeration performance of gas *** multi-orifice plate, an improved theoretical model is proposed which considers the wave effect of the previous bubbles generated from adjacent orifices and the variance of the number of active bubbling orifice.A parameter is proposed to evaluate the aeration performance in order to overcome the difficulty caused by the randomness of bubble formation *** experimental results suggest that the gas chamber filled with water is in favor of large bubble *** influence of the pitch of orifice on aeration performance can only be observed in high-restricted *** to the theoretical model and experimental results, the influences of gas flow rate and the number of open orifices on the aeration performance are analyzed and a design criterion for the number of open orifice is proposed.

关键词： Multi-orifice plate Aeration performance Bubble detachment volume The number of open orifices

The weeping characteristic of submerged multi-orifice plate

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Chinese Journal of Chemical Engineering 2020年第4期28卷 955-968页

作者： Jiming Wen Ruifeng Tian Sichao Tan qiunan Sun Haifeng Gu Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering UniversityHarbin 150001China

Weeping is an adverse phenomenon which results in higher pressure drop and poorer aeration *** experiments have been conducted to study the mechanism by which weeping impairs the work performance of multi-orifice plate.A theoretical model is improved to analyze the weeping phenomenon of multiorifice plate based on potential flow *** relations of different bubbling conditions and weeping rate are *** condition and average weeping rate have relation with the driven pressure differential and dynamic variation of gas chamber *** addition,a set of experiments are designed to study the influence of various factors on weeping *** bubble coalescence during bubble formation is a fatal factor determining weeping rate,so the relation between weeping rate and gas flow rate is concerned with the pitch of orifices and orifice *** is a critical plate thickness which is in favor of weeping.

关键词： Weeping Multi-orifice plate Wave pressure Gas chamber pressure

多学科护理团队模式在接受影像检查患者中的应用效果

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临床研究 2024年第3期32卷 153-156页

作者：王秋楠董飒曹民南阳市中心医院CT影像科河南南阳473000 南阳市中心医院骨二科河南南阳473000

目的探讨多学科护理团队模式对接受影像学检查患者护理风险和护理满意度的影响。方法选取南阳市中心医院2021年8月至2022年8月期间的临床科室护士30名,所有护士均接受多学科护理团队模式培训。选取2021年1月至2021年7月期间在本院接受... 详细信息

目的探讨多学科护理团队模式对接受影像学检查患者护理风险和护理满意度的影响。方法选取南阳市中心医院2021年8月至2022年8月期间的临床科室护士30名,所有护士均接受多学科护理团队模式培训。选取2021年1月至2021年7月期间在本院接受影像检查患者60例作为对照组,选取2021年8月至2022年8月接受影像检查患者60例作为观察组,对照组采用常规护理干预,观察组采用多学科护理团队模式干预。比较护士培训前后影像检查知识测试评分,比较两组患者影像检查相关项目、心理状态、护理风险和护理满意度。结果30名临床护士培训后影像检查知识评分均高于培训前,差异具有统计学意义(P<0.05);观察组候检时间、扫描时间短于对照组,准备完好率、一次成功率高于对照组,差异均有统计学意义(P<0.05);干预后观察组焦虑评分、抑郁评分和护理风险发生率均低于对照组,差异均有统计学意义(P<0.05),护理满意度高于对照组,差异具有统计学意义(P<0.05)。结论多学科护理团队模式可提高临床护士专业技能,提高影像学检查效率,降低护理风险,提高护理满意度。

关键词：影像检查多学科护理团队模式护理风险护理满意度

Maleimide Chemistry:Enabling the Precision Polymer Synthesis

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Chinese Journal of Chemistry 2021年第12期39卷 3177-3187页

作者： Glauber Mejia Yongquan Wang Zhihao Huang qiunan Shi Zhengbiao Zhang Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China State Key Laboratory of Radiation Medicine and Protection Soochow UniversitySuzhouJiangsu 215123China

Herein is presented a compilation of the main characteristics of maleimide chemistry in developing the precisely controlled polymers,including the design of sequence-controlled polymers,topological polymers,and polymeric single-chain *** synthetic methods,relied on the versatilities of the maleimide moieties as a latent monomer which leads to an efficient alternative in various innovative applications,especially in self-healing material,self-reporting materials for real-time monitoring,and also in data storage and anticounterfeiting *** core of the content in this review is focused on the up-to-data advances and publications on the major of maleimide chemistry in our research group.

关键词： Maleimide chemistry Precision polymer synthesis Polymers Topochemistry Dendrimers

墙顶支撑对开挖前抽水引发基坑变形控制效果研究

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工程地质学报 2024年第2期32卷 678-689页

作者：薛秀丽朱龙曾超峰王硕陈秋南郭志广湖南科技大学岩土工程稳定控制与健康监测湖南省重点实验室湘潭411201

基坑内抽水可诱发基坑围挡向坑内偏转并进而导致坑外土体随动沉降;在基坑土方开挖前,由于基坑内的支撑体系尚不能被完整架设,仅坑内土体可起到约束围挡变形的作用,此时,坑内抽水引起的围挡偏转十分明显。本文系统研究了围挡顶部支撑对... 详细信息

基坑内抽水可诱发基坑围挡向坑内偏转并进而导致坑外土体随动沉降;在基坑土方开挖前,由于基坑内的支撑体系尚不能被完整架设,仅坑内土体可起到约束围挡变形的作用,此时,坑内抽水引起的围挡偏转十分明显。本文系统研究了围挡顶部支撑对土方开挖前抽水引发基坑变形的控制效果,首先通过抽水试验探究了坑内外强水力连通时墙顶支撑对抽水引发基坑变形的影响,并建立了三维数值计算模型,研究了若干典型参数(如,坑内降水深度等)对围挡顶部支撑控制基坑变形效果的影响。研究发现,围挡顶部支撑仅能有效限制浅埋范围内的围挡侧移(本文约埋深11 m范围内),对深埋位置围挡侧移的限制效果十分有限,且随着降水深度的增加,变形控制效果越弱;对于开挖前抽水深度较大的工程,仅采用围挡顶部设置支撑的方法可能无法有效限制围挡侧移的发展;另外,围挡顶部支撑仅能有效限制基坑围挡后方一定范围内(本文约10 m)的地表沉降,且当坑内外有水力联系时,由于坑外水位下降是引起地面沉降的主导因素,围挡顶部支撑并不能明显体现限制坑外最大地面沉降的作用,此时,应结合坑外地下水回灌进行沉降控制。

关键词：开挖前抽水墙顶支撑围护结构侧移土体沉降抽水试验数值模拟

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鹧鸪茶资源开发及综合利用研究进展

中国热带农业 2024年第1期 17-22页

作者：孙秋南刘扬白大娟任红三亚市南繁科学技术研究院海南三亚572000 三亚市热带农业科学研究院海南三亚572000

鹧鸪茶树是海南具有浓郁地方特色和民族特色的代用茶植物和药用植物,鹧鸪茶是海南省旅游文化特产之一。对鹧鸪茶的功能成分及活性、资源开发和综合利用现状进行系统归纳总结,并对其开发利用存在的问题和展望进行探讨,为产业进一步发展... 详细信息

鹧鸪茶树是海南具有浓郁地方特色和民族特色的代用茶植物和药用植物,鹧鸪茶是海南省旅游文化特产之一。对鹧鸪茶的功能成分及活性、资源开发和综合利用现状进行系统归纳总结,并对其开发利用存在的问题和展望进行探讨,为产业进一步发展提供基础依据。

关键词：鹧鸪茶功能成分及活性资源开发综合利用

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鱼类白介素10的研究进展

水产学报 2024年第4期48卷 156-166页

作者：黎秋男李书含周永恒耿毅黄小丽陈德芳欧阳萍四川农业大学动物医学院四川农业大学动物科技学院

白介素10 (IL-10)是能够参与机体免疫的一种多功能细胞因子，由单核细胞、巨噬细胞等多种免疫细胞分泌，在肿瘤、感染、免疫缺陷等多种疾病的发生发展过程中发挥着重要的调节作用。多种硬骨鱼IL-10基因被克隆表达，被证实具有免疫调节... 详细信息

白介素10 (IL-10)是能够参与机体免疫的一种多功能细胞因子，由单核细胞、巨噬细胞等多种免疫细胞分泌，在肿瘤、感染、免疫缺陷等多种疾病的发生发展过程中发挥着重要的调节作用。多种硬骨鱼IL-10基因被克隆表达，被证实具有免疫调节作用，目前已有不少关于鱼类IL-10的生物活性、作用机制、调节机制的研究。本文根据已有报道，从鱼类IL-10的基因结构、转录表达、来源与进化、生物学活性及功能、鱼类IL-10受体及信号通路等5个方面进行了综述，为鱼类IL-10的研究与应用提供依据。

关键词：白介素10 (IL-10) 鱼类白介素10 (fIL-10) 病毒白介素10 (vIL-10) 生物学活性