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3D printing interface-modified PDMS/MXene nanocomposites for stretchable conductors

Journal of Materials Science & Technology 2022年第22期117卷 174-182页

作者： Mathias Aakyiir Brayden Tanner pei lay yap Hadi Rastin Tran Thanh Tung Dusan Losic Qingshi Meng Jun Ma UniSA STEM and Future Industries Institute University of South AustraliaSouth Australia 5095Australia ARC Hub for Graphene Enabled Industry Transformation School of Chemical Engineering and Advanced MaterialsThe University of AdelaideAdelaideSouth Australia 5005Australia Commonwealth Scientific and Industrial Research Organisation(CSIRO)Manufacturing ClaytonVictoria 3168Australia College of Aerospace Engineering Shenyang Aerospace UniversityShenyangLiaoning 110136China

Additive manufacturing has rapidly evolved over recent years with the advent of polymer inks and those inks containing novel *** compatibility of polymer inks with nanomaterial inks remains a great *** yet effective methods for interface improvement are highly sought-after to significantly enhance the functional and mechanical properties of printed polymer *** this study,we developed and modified a Ti_(3)C_(2) MXene ink with a siloxane surfactant to provide compatibility with a polydimethylsiloxane(PDMS)*** rheology of all the inks was investigated with parameters such as complex modulus and viscosity,confirming a self-supporting ink behaviour,whilst Fourier transform infrared spectroscopy exposed the inks’reaction *** modified MXene nanosheets have displayed strong interactions with PDMS over a wide strain *** electrical conductivity of 6.14×10^(−2) S cm^(−1) was recorded for a stretchable nanocomposite conductor containing the modified MXene *** nanocomposite revealed a nearly linear stress-strain relationship and a maximum stress of 0.25 *** 5%strain,the relative resistance change remained below 35%for up to 100 cycles,suggesting high flexibility,conductivity and mechanical *** study creates a pathway for 3D printing conductive polymer/nanomaterial inks for multifunctional applications such as stretchable electronics and sensors.

关键词： 3D printing MXene Nanocomposites Stretchable conductors

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Hypoxia increases adipogenesis and affects adipocytokine production in orbital fibroblasts-a possible explanation of the link between smoking and Graves' ophthalmopathy

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International Journal of Ophthalmology(English edition) 2014年第3期7卷 403-407页

作者： Chiaw Ling Chng Oi Fah Lai Charmaine Sze-Min Chew Yu pei Peh Stephanie Man-Chung Fook-Chong lay Leng Seah Daphne Hsu-Chin Khoo Department of Endocrinology Singapore General HospitalLevel 3 the Academia 20 College Road 169856 Singapore Department of Clinical Research Academia Discovery Tower Level 9 Research Office 2 20 College Road 169856Singapore Oculoplastic/Aesthetic Eyeplastic Service Singapore National Eye Centre 11 Third Hospital Avenue 168751Singapore

AIM:To assess the effects of hypoxia on human orbital fibroblasts(OF)on adipogenesis and adipocytokine ***:Human OF were derived from tissues obtained from patients with Graves’ophthalmopathy(GO)and from patients without known thyroid diseases undergoing *** OF were cultured separately under normoxic and hypoxic *** of adipocytokine concentrations using multiplex ELISA and lipid accumulation in the cells using Oil Red O staining were subsequently ***:There was increased adipogenesis in OF from GO subject when exposed to hypoxic culture *** was not observed in OF from normal *** led to an increase in leptin and a decrease in MCP-1 secretion in OF ***:Hypoxia induces adipogenesis in OF and may represent a mechanism by which smoking contributes to deterioration of *** also found novel changes to leptin and MCP-1 production in OF cultures exposed to hypoxia suggesting important roles of these cytokines in the disease process.

关键词： hypoxia smoking Graves' ophthalmopathy

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Time delay and extended halo for constraints on the intergalactic magnetic field

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Research in Astronomy and Astrophysics 2015年第12期15卷 2173-2186页

作者： Yuan-pei Yang Zi-Gao Dai School of Astronomy and Space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education

Primary gamma rays emitted from extragalactic very-high-energy （VHE） sources, such as blazars, will generate cascade radiation in intergalactic space with a scale of -- 100 Mpc, for z - 0.1 and Eγ -1 TeV. These cascades proceed through electron-positron pair production and inverse Compton （IC） scattering in the cosmic background radiation fields, mainly cosmic microwave background （CMB） radiation and extragalactic background light in the voids of the universe. The existence of an intergalactic magnetic field （IGMF） would deflect paths of electron-positron pairs that scatter CMB photons, causing some observable effects, such as time delay, an ex- tended halo, and a spectral change. Here we reanalyze the diffusion of an electron jet deflected by IGMF and propose a unified semi-analytical model. By using publicly available data from the Fermi/LAT detector and contemporaneous TeV observations, we find that the cascade photon flux is not significantly affected by the IGMF strength for non-variable blazars when the IGMF is weaker than ,-~ 10-16 G. This result is clearly different from previous works that analyzed the extended halo and time de- lay separately for non-variable blazars and flaring blazars. By applying our model to two extreme blazars （1ES 0229＋200 and 1ES 1218＋304）, we obtain the IGMF lower limit of order ≥10-13 --10-14 G in the non-variable case, which is a stronger constraint on the IGMF strength than previous works （≥10-16 ,-- 10-18 G）, and ≥10-18 -- 10-19 G in the case of flaring blazars. Furthermore, we study the light curves and extended halo of the cascade photons by considering the effects of the IGME

关键词： gamma rays: general -- galaxies: magnetic field -- galaxies: individual(1ES 0229+200 1ES 1218+304)

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Analytical method for promoting process capability of shock absorption steel

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Journal of Zhejiang University Science 2003年第4期4卷 388-392页

作者： SUNGWen-pei SHIHMing-Hsiang CHENKuen-Suan DepartmentofLandscapeDesignandManagement NationalChin-YiInstituteofTechnologyTaipingTaichungTaiwan41111 DepartmentofConstructionEngineering NationalKaoshiangFirstUniversityofScienceandTechnologyKaoshiangTaiwan824 DepartmentofIndustrialEngineeringandManagement NationalChin-YiInstituteofTechnologyTaipingTaichungTaiwan41111

Mechanical properties and low cycle fatigue are two factors that must be considered in developin gnew type steel for shock absorption. Process capability and process control are significant factors in achieving the purpose of research and development programs. Often-used evaluation methods failed to measure processyield and process centering ; so this paper uses Taguchi loss function as basis to establish an evaluation methodand the steps for assessing the quality of mechanical properties and process control of an iron and steel manu-facturer. The establishment of this method can serve the research and development and manufacturing industry and lay a foundation in enhancing its process control ability to select better manufacturing processes that are more reliable than decision making by using the other commonly used methods.

关键词： Manufacturing performance index of shock absorption steel F test statistic Evaluation procedure Process capability

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Analysis on the Resilience of Key Pre-distribution in Sensor Networks

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China Communications 2007年第3期4卷 30-37页

作者： Shen Yulong Ma Jianfeng pei Qingqi Xidian Univ Sch Comp Sci & Technol Xian 710071 Shaanxi Peoples R China Minist Educ Key Lab Comp Networks & Informat Secur Xian 710071 Shaanxi Peoples R China

Resilience against node capture is one of the main indicators of the key pre-distribution security in sensor *** providing the attack model and the definition of the resilience against node capture of sensor networks,the resilience of basic random key pre-distribution,Q-composite random key pre-distribution and their reinforced schemes are analyzed and compared in *** results show that the size of key pool,the numbers of the keys stored in nodes and the value of Q determine the resilience of random key *** tradeoff between the resilience,security connectivity and costs in sensor networks is *** researches lay a foundation on the design of the secure protocol and the algorithm in the specific application environment of sensor networks.

关键词： sensor networks resilience analysis key pre-distribution

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多线程非局部均值三维MRI去噪方法及其实现

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科学技术与工程 2014年第15期22卷 185-188页

作者：陈耿吴亚锋张培 Pew-Thian yap 西北工业大学数据处理中心西安710072 UNC MIND Lab Chapel Hill USA

非局部均值滤波算法已经在多种图像去噪场合得到了验证,并且显示出了优异的性能。在核磁共振图像去噪中,该算法存在计算量大的问题。针对该问题,将多线程技术引入到算法实现中,提高了非局部均值滤波算法的计算效率。仿真数据和真实数据... 详细信息

非局部均值滤波算法已经在多种图像去噪场合得到了验证,并且显示出了优异的性能。在核磁共振图像去噪中,该算法存在计算量大的问题。针对该问题,将多线程技术引入到算法实现中,提高了非局部均值滤波算法的计算效率。仿真数据和真实数据的实验结果表明:在保证图像去噪效果不变的情况下,四核处理器主机内,多线程算法较之于单线程算法的运行速度提高了2.53倍。

关键词：非局部均值滤波核磁共振图像去噪 ITK 多线程编程

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Identification of summer nectar plants contributing to outbreaks of Mythimna separata(Walker)(Lepidoptera: Noctuidae) in North China

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Journal of Integrative Agriculture 2018年第7期17卷 1516-1526页

作者： GUO pei WANG Gao-ping JIN Li-jie FAN Xing-qi HE Han-lin ZHOU pei-wen GUO Xian-ru LI Wei-zheng YUAN Guo-hui College of Plant Protection Henan Agricultural University

The presence of adequate nectar sources along the migratory pathway is a prerequisite for moths of oriental armyworm, Mythimna separata, to reach target habitats and lay eggs. Identification of plant species and assessment of their suitability as wild nectar sources along the summer migration pathway of adult M. separata are critical steps in making effective forecasts of second-and third-generation armyworm outbreaks in North China. We explored five aspects of moth-nectar source relationships：（1） Field investigations in 2014 and 2015 showed that the florescence of chaste tree, Vitex negundo var. heterophylla, a primary nectar plant in apiculture, coincided with the summer migration of oriental armyworm moths. The flowers of chaste tree opened day and night and M. separata moths were found actively flying around and resting on tree.（2） Identification of moth-borne pollen by scanning electronic microscopy（SEM） micrographs in 2015 and 2016 revealed that 15.4% of 369 moths trapped by blacklight traps, 17.1% of 557 moths captured by vertical-pointing searchlight traps and 24.4% of 311 moths caught by pheromone traps were found with pollen attached to their proboscis. A total of 228 pollen-carrying individuals out of 1237 armyworm moths were captured by the three types of traps. The three highest percentages of pollen-bearing armyworm moths were carrying pollen of Toona sp.（59.65%）, Ligustrum sp.（27.19%） and Syringa sp.（4.39%）. In total, 14 types of pollen were detected where three were identified to species, 10 to genus and one as an unknown species.（3） Analysis of geographical distribution, flowering periods and relative abundances of candidate nectar plants suggested that Chinese toon, Toona sinensis, and privet, Ligustrum lucidum, were two important nectar plant species.（4） Analysis on relationship between pollen and ovarian development showed that 14, 15 and 10 females carrying pollen of T. sinensis had ovaries at developmental stages Ⅰ, Ⅱ and Ⅲ, respectively. Many

关键词： Mythimna separata pollen ovarian development nectar plant

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Understanding the mechanisms of resistance to tomato leaf mold:A review

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Horticultural Plant Journal 2022年第6期8卷 667-675页

作者： Tingting Zhao Tong pei Jingbin Jiang Huanhuan Yang He Zhang Jingfu Li Xiangyang Xu Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Northeast Region) Ministry of Agriculture and Rural AffairsCollege of Horticulture and Landscape ArchitectureNortheast Agricultural UniversityHarbin 150030China

Tomato leaf mold is a common disease in tomato production and severely impacts the growth,fruit quality and yield of tomato *** on tomato leaf mold has a long history and has focused mainly on the differentiation of pathogen races,the structure and function of pathogen Avr gene products,the cloning of Cf resistance genes and the analysis of disease resistance *** between Cf and Avr are in accordance with the"gene-for-gene"hypothesis and typical Cf/Avr interactions are part of effector-triggered immunity(ETI).However,an increasing number of studies have proven that pathogen-associated molecular pattern(PAMP)-triggered immunity(PTI)is involved in the disease resistance response system mediated by Cf *** addition,different Cf genes have both similar and different roles in the disease resistance response,indicating that the disease resistance mechanism of Cf genes is *** this paper,progress in tomato leaf mold research was reviewed,and the regulatory mechanism underlying the Cf-mediated disease resistance response was thoroughly *** hope this summary will lay a foundation for research on tomato leaf mold disease resistance mechanisms and is applicable to breeding for disease resistance.

关键词： Tomato leaf mold Cf genes Disease resistance Cf/Avr interactions

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基于生态系统概念的工业园区整体规划

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国土资源情报 2004年第5期 44-49页

作者： Perry pei-Ju Yang Ong Boon lay 丁晓红新加坡国立大学设计和环境学院建筑系

过去几十年间,研究界围绕'可持续发展'的定义和理论做了广泛而系统的论述,这些论述无疑推动了全社会对可持续发展重要意义的认识.但是,在如何把可持续发展理论应用于现实工作中的土地规划、管理和行动方面,长期以来却鲜有明确具体的阐述... 详细信息

过去几十年间,研究界围绕'可持续发展'的定义和理论做了广泛而系统的论述,这些论述无疑推动了全社会对可持续发展重要意义的认识.但是,在如何把可持续发展理论应用于现实工作中的土地规划、管理和行动方面,长期以来却鲜有明确具体的阐述.为可持续发展寻找'可操作的方法'正成为当今日益重要的课题.

关键词：生态系统工业园区整体规划可持续发展景观生态学

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Flexible Si/PEDOT：PSS hybrid solar cells

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Nano Research 2015年第10期8卷 3141-3149页

作者： Shuxin Li Zhibin pei Fei Zhou Ying Liu Haibo Hu Shulin Ji Changhui Ye AnhuiKeyLaboratoryofNanomaterials andTechnologyandKeyLaboratoryofMaterialsPhysicsInstituteofSolidStatePhysicsChineseAcademyofSciencesHefei230031China

Si hybrid solar cells have attracted tremendous research attention in recent years because of their low production costs and high performance. However, flexible Si hybrid solar cells have rarely been reported owing to the difficulty of fabricating single-crystalline Si with good flexibility. In this study, we fabricated flexible Si/PEDOT：PSS hybrid solar cells with micro-pyramid-structured Si light absorbers using a facile approach. Compared with planar flexible hybrid solar cells with a power-conversion efficiency of 4%, solar cells with micro-pyramid-structured Si light absorbers have a higher efficiency of 6.3%. External quantum efficiency and electrochemical impedance spectroscopy measurements revealed that the solar cells with micro-pyramid-structured Si light absorbers exhibited a pronounced light-harvesting enhancement in the spectra region of 400-1,000 nm and had a smaller series resistance and larger recombination resistance compared with the planar cells, yielding a higher efficiency. Additionally, in mechanical-bending tests, the flexible solar cells with micro-pyramid-structured Si light absorbers exhibited an excellent performance stability after bending for 600 cycles. Our findings lay the foundation for the real-world applications of flexible Si/PEDOT：PSS hybrid solar cells in next-generation portable electronics.

关键词： flexible devices hybrid solar cells micro-pyramid flexing test

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