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Characterization of Multi-scale Morphology and Superhydrophobicity of Water Bamboo Leaves and Biomimetic Polydi- methylsiloxane （PDMS） Replicas

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Journal of Bionic Engineering 2015年第4期12卷 624-633页

作者： Huiying Guan Zhiwu Han huina cao Shichao Niu Zhihui Qian Junfeng Ye Luquan Ren College of Mechanical and Electrical Engineering Jilin Institute of Chemical Technology Jilin 132022 China Key Laboratory of Bionic Engineering Ministry of Education Jilin University Changchun 130022 China

The morphology and wettability of Water Bamboo Leaves （WBL） and their biomimetic replicas were investigated. The particular morphology structures of samples were characterized by Scanning Electron Microscopy （SEM） and Confocal Laser Scanning Microscopy （CLSM）. The static wettability of samples was assessed by contact angle measurements, while the dy- namic wettability was analyzed by high speed camera system. The wettability mechanism of WBL was also explained by Cassie model. Artificial surfaces were fabricated by duplicating WBL surface microstructures using PDMS in large area （5 cm x 3 cm）. The results show the main structure characteristics of this leaf surface are sub-millimeter groove arrays, micron-scale papillae and a superimposed layer with 3D epicuticular wax sculptures hierarchical structure, and the static Water Contact Angle （WCA） of 15l~~2~ and Water Sliding Angle （WSA） of 4^-6~ indicate that WBL surface is superhydrophobic. The combination of wax film and microstructure of WBL surface gives its surface excellent superhydrophobic property. Complex hierarchical patterns with features from sub-millimeter to micron-scale range are well reproduced. The reason for the absence of nanostructures is melting of plant epidermal wax during the curing process. The WCA values on artificial WBL and negative PDMS replica are 146~ ~ 3~ and 137~ ~ 2~, respectively, demonstrating preferable hydrophobicity. Differences in wetting behavior between natural leaves and artificial leaves originate from an inaccurate replication of the chemistry and structures of the three-dimensional wax projections on the leaf surface. Nevertheless, the morphological features of the leaf transferred to the replica improve signifi- cantly the hydrophobic properties of the replica when compared with the smooth PDMS reference. This study may provide an inspiration for the biomimetic design and construction of large area roughness-induced hydrophobic and anti-sticking material surface.

关键词： biomimetic surfaces water bamboo leaf micro-topography template transfer superhydrophobicity

耳穴贴压联合穴位注射对带状疱疹后遗神经痛患者生活的影响

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国际护理学杂志 2024年第3期43卷 393-396页

作者：赵静李晓静曹慧娜潘怡上海市浦南医院中医门诊上海200125 上海市浦南医院护理部上海200125 上海市浦南医院急诊上海200125 上海市浦南医院门诊上海200125

目的分析耳穴贴压联合穴位注射对带状疱疹后遗神经痛患者的作用。方法选取上海市浦东新区浦南医院2021年1月至2022年2月收治的82例带状疱疹后遗神经痛患者作为研究对象,在常规治疗和护理的基础上,对其使用耳穴贴压联合穴位注射。通过在... 详细信息

目的分析耳穴贴压联合穴位注射对带状疱疹后遗神经痛患者的作用。方法选取上海市浦东新区浦南医院2021年1月至2022年2月收治的82例带状疱疹后遗神经痛患者作为研究对象,在常规治疗和护理的基础上,对其使用耳穴贴压联合穴位注射。通过在院调查及跟踪回访,于患者入组前与干预8 w时,使用视觉模拟评分法(VAS)、匹茨堡睡眠质量指数量表(PSQI)以及带状疱疹后遗神经痛中医生活质量量表,分别评价其疼痛情况、睡眠质量以及生活质量。结果干预8 w时的视觉模拟评分法(VAS)评分、匹茨堡睡眠质量指数量表(PSQI)指标评分均低于入组前,而带状疱疹后遗神经痛中医生活质量量表指标评分均高于入组前(P<0.05)。结论耳穴贴压联合穴位注射的应用,能够明显缓解带状疱疹后遗神经痛患者的疼痛感,同时明显改善其睡眠质量,在此基础上,显著提升其生活质量。

关键词：带状疱疹后遗神经痛耳穴贴压穴位注射疼痛睡眠质量生活质量

中药祛毒汤熏洗联合腕踝针对痔疮切除术后患者康复情况的影响

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中西医结合护理（中英文） 2024年第5期10卷 37-40页

作者：郭一颖陈旗张芳芳曹慧娜台州市中医院浙江台州318000

目的探讨中药祛毒汤熏洗联合腕踝针方案对痔疮切除术后患者疼痛程度及疼痛持续时间的影响。方法选择2020年2月至2022年10月台州市中医院行痔疮切除术的176例患者作为调查对象,并进行回顾性分析,根据不同的治疗和护理方法分为2组,每组有8... 详细信息

目的探讨中药祛毒汤熏洗联合腕踝针方案对痔疮切除术后患者疼痛程度及疼痛持续时间的影响。方法选择2020年2月至2022年10月台州市中医院行痔疮切除术的176例患者作为调查对象,并进行回顾性分析,根据不同的治疗和护理方法分为2组,每组有88例患者。对照组给予常规护理措施,观察组给予中药祛毒汤熏洗联合腕踝针护理措施。评价并比较患者的疼痛程度、创口愈合情况和中医症状评分。结果护理后的结果显示,观察组的疼痛程度轻于对照组,表现为重度疼痛比例明显低于对照组(P0.05)。观察组的创口愈合情况好于对照组,表现为视觉模拟评分法评分比对照组更低、切口愈合时间比对照组更早、疼痛持续时间比对照组更短(P均<0.05)。观察组的肛门灼热、脓血便和口苦咽干三方面中医症状评分均低于对照组(P均<0.05)。结论采用中药祛毒汤熏洗联合腕踝针干预痔疮切除术后患者,能够有效降低疼痛程度,并缩短疼痛持续时间,且可改善临床症状。

关键词：痔疮中药祛毒汤熏洗腕踝针疼痛程度疼痛持续时间

Zeros of Complete Symmetric Polynomials over Finite Fields

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Journal of Systems Science & Complexity 2024年第4期37卷 1772-1788页

作者： cao Wei School of Mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China

Wan and Zhang(2021) obtained a nontrivial lower bound for the number of zeros of complete symmetric polynomials over finite fields,and proposed a problem whether their bound can be *** this paper,the author improves Wan-Zhang's bound from three *** proposed results are based on the estimates related to the number of certain permutations and the value sets of non-permutation polynomials associated to the complete symmetric *** the author believes that there are still possibilities to improve the bounds and hence Wan-Zhang's bound.

关键词： Complete symmetric polynomial finite field permutation polynomial value set

如何在国际化背景下加强我国高等航海教育的国际合作

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科技创业月刊 2007年第5期20卷 92-93页

作者：曹慧娜上海海事大学商船学院上海200135

高等教育国际化是当今世界教育发展的趋势,面临全球经济一体化的到来及中国加入WTO,在中国高等教育走向国际的大背景下,作为其重要组成部分的高等航海教育,必然也将走向国际,而高等航海教育国际化的重要途径之一就是中外合作办学。论述... 详细信息

高等教育国际化是当今世界教育发展的趋势,面临全球经济一体化的到来及中国加入WTO,在中国高等教育走向国际的大背景下,作为其重要组成部分的高等航海教育,必然也将走向国际,而高等航海教育国际化的重要途径之一就是中外合作办学。论述了中外合作办学将成为当前航海教育国际化的重要任务。

关键词：高等教育高等航海教育国际化中外合作办学

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自然拼读法与现行英语教材的深度融合探究

成才之路 2021年第34期 124-126页

作者：曹慧娜福建省龙岩市实验小学福建龙岩364000

自然拼读法符合学生学习语言的规律,能让学生在玩中学习,在学习中玩,可以有效提高学生的英语学习效率,是一种效果显著的英语教学方法。将自然拼读法与现行英语教材深度融合有利于提高学生的认读能力、拼写能力,提升学生阅读的流利性和... 详细信息

自然拼读法符合学生学习语言的规律,能让学生在玩中学习,在学习中玩,可以有效提高学生的英语学习效率,是一种效果显著的英语教学方法。将自然拼读法与现行英语教材深度融合有利于提高学生的认读能力、拼写能力,提升学生阅读的流利性和流畅性,从而使学生英语的听、说、读、写能力都得到充分发展。文章从现行小学英语教材中语音教学存在的问题入手,对自然拼读法与现行英语教材的融合策略、融合方法、融合拓展进行探索研究。

关键词：英语教学自然拼读法教学方法教学效果

Pt nanodendrites with a PtIr alloy surface structure exhibit excellent stability toward acidic hydrogen evolution reaction

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Nano Research 2024年第6期17卷 4844-4849页

作者： Chang Liu Zongnan Wei Minna cao Rong cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

The development of effective and stable electrocatalysts for the hydrogen evolution reaction(HER)in acidic electrolytes is a significant *** this work,homogeneous Pt nanodendrites(Pt NDs)with a PtIr shell were successfully synthesized by a two-step wet chemical *** open three-dimensional(3D)dendritic structure exhibited exceptional electrocatalytic characteristics,exposing as many active sites as ***,by alloying Ir with Pt on the surface,catalytic activity was greatly enhanced while ensuring extremely high *** surface-enriched platinum nanodendritic catalysts(Pt@PtIr NDs)outperformed the control samples and the commercial *** acidic HER test,Pt@PtIr NDs had a lower overpotential(22 mV)than Pt NDs(26 mV)and commercial Pt/C(31 mV)at 10 mA/cm^(2),and the activity of Pt@PtIr NDs remained consistent even after undergoing a continuous durability test for at least 168 h,which was much superior to the performance of commercial Pt/C(10 h)under identical test *** study revealed that the application of 3D Pt dendritic metal alloys may offer a chance for the development of enhanced electrocatalysts in acidic HER.

关键词： Pt nanodendrites iridium high stability hydrogen evolution reaction alloy

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根植英语故事教学，培养学生思维品质

家长 2021年第10期 73-74页

作者：曹慧娜福建省龙岩市实验小学

自2001年义务教育课程的改革以来,目前课程改革已进入深化的阶段。其中,关注学生的思维发展是深化阶段课程改革的三个动向之一。语言作为思维的外壳,表达的是思维的过程与结果。而一篇故事中承载的不仅有插图、文字、表格等信息,还有丰... 详细信息

自2001年义务教育课程的改革以来,目前课程改革已进入深化的阶段。其中,关注学生的思维发展是深化阶段课程改革的三个动向之一。语言作为思维的外壳,表达的是思维的过程与结果。而一篇故事中承载的不仅有插图、文字、表格等信息,还有丰富的语言内容与深刻的思想内涵。

关键词：小学英语故事教学思维品质

Quantitative phase imaging based on holography:trends and new perspectives

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Light(Science & Applications) 2024年第7期13卷 1235-1277页

作者： Zhengzhong Huang Liangcai cao Department of Precision Instrument Tsinghua UniversityBeijing 100084China

In 1948,Dennis Gabor proposed the concept of holography,providing a pioneering solution to a quantitative description of the optical *** 75 years of development,holographic imaging has become a powerful tool for optical wavefront measurement and quantitative phase *** emergence of this technology has given fresh energy to physics,biology,and materials *** holography(DH)possesses the quantitative advantages of wide-field,non-contact,precise,and dynamic measurement capability for *** has unique capabilities for the propagation of optical fields by measuring light scattering with phase *** offers quantitative visualization of the refractive index and thickness distribution of weak absorption samples,which plays a vital role in the pathophysiology of various diseases and the characterization of various *** provides a possibility to bridge the gap between the imaging and scattering *** propagation of wavefront is described by the complex *** complex-value in the complex-domain is reconstructed from the intensityvalue measurement by camera in the ***,we regard the process of holographic recording and reconstruction as a transformation between complex-domain and real-domain,and discuss the mathematics and physical principles of *** review the DH in underlying principles,technical approaches,and the breadth of *** conclude with emerging challenges and opportunities based on combining holographic imaging with other methodologies that expand the scope and utility of holographic imaging even *** multidisciplinary nature brings technology and application experts together in label-free cell biology,analytical chemistry,clinical sciences,wavefront sensing,and semiconductor production.

关键词： holographic phase precise