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透氢非钯基金属膜研究进展

稀有金属材料与工程 2013年第4期42卷 868-874页

作者：江鹏于彦东 Guangsheng Song daniel liang 哈尔滨理工大学黑龙江哈尔滨150040 CSIRO Process Scienceand Engineering

相比于变压吸附和深冷分离法,膜分离技术由于能耗低、简单易行等特点,在氢气分离提纯中的应用具有优势。目前工业上分离提纯氢气应用最多的是致密金属膜,尤其是钯及其合金膜。但是钯是贵金属,成本非常高,限制了钯基膜的大规模应用。因... 详细信息

相比于变压吸附和深冷分离法,膜分离技术由于能耗低、简单易行等特点,在氢气分离提纯中的应用具有优势。目前工业上分离提纯氢气应用最多的是致密金属膜,尤其是钯及其合金膜。但是钯是贵金属,成本非常高,限制了钯基膜的大规模应用。因此目前非钯基致密金属膜在氢气分离提纯中的应用受到广泛的的关注,成为研究热点。本文综述了金属膜分离氢气机理,非钯基金属膜的材料成分及其发展现状,并指出目前开发膜材料存在的一些亟待解决的问题。

关键词：透氢金属膜非钯基膜晶态合金膜非晶态合金膜

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透氢钒基合金膜

稀有金属材料与工程 2017年第3期46卷 857-863页

作者：江鹏 Guangsheng Song daniel liang 吴王平华同曙常州大学江苏常州213164 Commonwealth Scientific and Industrial Research Organization Process Science and Engineering

目前工业上分离高纯氢气应用最多的是致密金属膜,尤其是钯银合金膜。钯、银属于贵金属,大规模应用成本高。钒基合金膜拥有比钯银合金膜更高的透氢率、机械强度和较低的成本,且氢脆抗力较纯钒得到很大提高,成为潜在的替代钯银合金膜的材... 详细信息

目前工业上分离高纯氢气应用最多的是致密金属膜,尤其是钯银合金膜。钯、银属于贵金属,大规模应用成本高。钒基合金膜拥有比钯银合金膜更高的透氢率、机械强度和较低的成本,且氢脆抗力较纯钒得到很大提高,成为潜在的替代钯银合金膜的材料之一。本文综述了钒基合金膜材料的研究现状,催化层对透氢性能的影响以及钒基合金膜的制备方法,并对未来的发展趋势进行了展望。

关键词：透氢金属膜钒基合金膜钯合金膜催化层

In vivo performance of a rare earth free Mg-Zn-Ca alloy manufactured using twin roll casting for potential applications in the cranial and maxillofacial fixation devices

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Bioactive Materials 2022年第6期7卷 85-96页

作者： Matthew S.Dargusch Nagasivamuni Balasubramani Nan Yang Sean Johnston Yahia Ali Gui Wang Jeffrey Venezuela Jiwon Carluccio Cora Lau Rachel Allavena daniel liang Karine Mardon Qingsong Ye Centre for Advanced Materials Processing and Manufacturing(AMPAM) School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQLD 4072Australia The University of Queensland Biological ResourcesBrisbaneQLD4072Australia School of Veterinary Science The University of QueenslandGattonQLD4343Australia Commonwealth Scientific and Industrial Research Organisation(CSIRO) ClaytonMelbourneAustralia Centre for Advanced Imaging National Imaging FacilityThe University of QueenslandSt LuciaBrisbaneQLD4072Australia Centre of Regenerative Medicine Renmin Hospital of Wuhan UniversityWuhan UniversityWuhanWuhan430060China Skeletal Biology Research Centre Department of Oral and Maxillofacial SurgeryMassachusetts General HospitalHarvard School of Dental MedicineBostonMA02114United States

A magnesium alloy containing essential,non-toxic,biodegradable elements such as Ca and Zn has been fabricated using a novel twin-roll casting process(TRC).Microstructure,mechanical properties,in vivo corrosion and biocompatibility have been assessed and compared to the properties of the rare earth(RE)element containing WE43 *** Mg-0.5 wt% Zn-0.5 wt% Ca exhibited fine grains with an average grain size ranging from 70 to 150μ*** properties of a TRC Mg-0.5Zn-0.5Ca alloy showed an ultimate tensile strength of 220 MPa and ductility of 9.3%.The TRC Mg-0.5Zn-0.5Ca alloy showed a degradation rate of 0.51±0.07 mm/y similar to that of the WE43 alloy(0.47±0.09 mm/y)in the rat model after 1 week of *** week 4 the biodegradation rates of both alloys studied were lowered and stabilized with fewer gas pockets around the *** histological analysis shows that both WE43 and TRC Mg-0.5Zn-0.5Ca alloy triggered comparable tissue healing responses at respective times of *** presence of more organized scarring tissue around the TRC Mg-0.5Zn-0.5Ca alloys suggests that the biodegradation of the RE-free alloy may be more conducive to the tissue proliferation and remodelling process.

关键词： Mg-Zn-Ca alloy Twin-roll strip casting In vivo degradation Biocompatibility Biodegradable implants

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Java语言程序设计与数据结构

Angle-uniform parallel coordinates

作者： (美)梁勇(Y.daniel liang)

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Computational Visual Media 2023年第3期9卷 495-512页

作者： Kaiyi Zhang liang Zhou Lu Chen Shitong He daniel Weiskopf Yunhai Wang School of Computer Science and Technology Shandong UniversityQingdao 266237China National Institute of Health Data Science Peking UniversityBeijing 100191China Visualization Research Center(VISUS) University of Stuttgart70569 StuttgartGermany

We present angle-uniform parallel coordinates,a data-independent technique that deforms the image plane of parallel coordinates so that the angles of linear relationships between two variables are linearly mapped along the horizontal axis of the parallel coordinates *** being a common method for visualizing multidimensional data,parallel coordinates are ineffective for revealing positive correlations since the associated parallel coordinates points of such structures may be located at infinity in the image plane and the asymmetric encoding of negative and positive correlations may lead to unreliable *** address this issue,we introduce a transformation that bounds all points horizontally using an angleuniform mapping and shrinks them vertically in a structure-preserving fashion;polygonal lines become smooth curves and a symmetric representation of data correlations is *** further propose a combined subsampling and density visualization approach to reduce visual clutter caused by *** method enables accurate visual pattern interpretation of data correlations,and its data-independent nature makes it applicable to all multidimensional *** usefulness of our method is demonstrated using examples of synthetic and real-world datasets.

关键词： parallel coordinates multidimensional data deformation correlations

Fitting quadrics with a Bayesian prior

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Computational Visual Media 2016年第2期2卷 107-117页

作者： daniel Beale Yong-liang Yang Neill Campbell Darren Cosker Peter Hall University of Bath

Quadrics are a compact mathematical formulation for a range of primitive surfaces. A problem arises when there are not enough data points to compute the model but knowledge of the shape is available. This paper presents a method for fitting a quadric with a Bayesian prior. We use a matrix normal prior in order to favour ellipsoids when fitting to ambiguous data. The results show the algorithm copes well when there are few points in the point cloud,competing with contemporary techniques in the area.

关键词： geometry statistics graphics computer vision

Effect of surface damage induced by cavitation erosion on pitting and passive behaviors of 304L stainless steel

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International Journal of Minerals,Metallurgy and Materials 2023年第7期30卷 1338-1352页

作者： liang Li Yanxin Qiao Lianmin Zhang Aili Ma Enobong Felix daniel Rongyao Ma Jian Chen Yugui Zheng School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang National Research Center for Materials Science Institute of MetalsChinese Academy of SciencesShenyang 110016China

The corrosion behavior of 304L stainless steel(SS)in 3.5wt%NaCl solution after different cavitation erosion(CE)times was mainly evaluated using electrochemical noise and potentiostatic polarization *** was found that the antagonism effect resulting in the passivation and depassivation of 304L SS had significant distinctions at different CE *** passive behavior was predominant during the incubation period of CE where the metastable pitting initiated at the surface of 304L *** the rising period of CE,the 304L SS experienced a transition from passivation to depassivation,leading to the massive growth of metastable pitting and stable *** depassivation of304L SS was found to be dominant at the stable period of CE where serious localized corrosion occurred.

关键词： cavitation erosion pitting stainless steel electrochemical noise

Pollinator diversity benefits natural and agricultural ecosystems,environmental health,and human welfare

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Plant Diversity 2022年第5期44卷 429-435页

作者： daniel Mutavi Katumo Huan liang Anne Christine Ochola Min Lv Qing-Feng Wang Chun-Feng Yang CAS Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Center of Conservation Biology Core Botanical GardensChinese Academy of SciencesWuhan 430074China

Biodiversity loss during the Anthropocene is a serious ecological *** are important vectors that provide multiple essential ecosystem services but are declining rapidly in this changing ***,several studies have argued that a high abundance of managed bee pollinators,such as honeybees(Apis mellifera),may be sufficient to provide pollination services for crop productivity,and sociological studies indicate that the majority of farmers worldwide do not recognize the contribution of wild pollinator diversity to agricultural ***,we review the importance of pollinator diversity in natural and agricultural ecosystems that may be thwarted by the increase in abundance of managed pollinators such as *** also emphasize the additional roles diverse pollinator communities play in environmental safety,culture,and *** indicates that in natural ecosystems,pollinator diversity enhances pollination during environmental and climatic perturbations,thus alleviating pollen *** agricultural ecosystems,pollinator diversity increases the quality and quantity of crop ***,studies indicate that many pollinator groups are useful in monitoring environmental pollution,aid in pest and disease control,and provide cultural and aesthetic *** the uncertainties that may accompany rapid environmental changes in the Anthropocene,the conservation of pollinator diversity must expand beyond bee ***,the value of pollinator diversity maintenance extends beyond the provision of pollination ***,conservation of pollinator diversity requires an interdisciplinary approach with contributions from environmentalists,taxonomists,and social scientists,including artists,who can shape opinions and behavior.

关键词： Bee Complementarity Ecological indicator Plant community Pollen limitation