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单片机与嵌入式系统应用 2022年第8期22卷 1-3页

作者： jens nickel 透镜(译) Elektor

谈到Arduino的历史以及21世纪的电子世界,David Cuartielles认为Arduino影响巨大。在电子工作区、创客空间、高科技贸易展或大学EE/ECE实验室,Arduino随处可见。Arduino项目源于大约15年前,最初主要面向艺术家和其他非程序员,后来Arduin... 详细信息

谈到Arduino的历史以及21世纪的电子世界,David Cuartielles认为Arduino影响巨大。在电子工作区、创客空间、高科技贸易展或大学EE/ECE实验室,Arduino随处可见。Arduino项目源于大约15年前,最初主要面向艺术家和其他非程序员,后来Arduino在制造商和专业人士中也深受欢迎。我最近有机会采访了David Cuartielles(他与Massimo Banzi和其他一些微控制器爱好者共同创立了Arduino),探讨了Arduino的过去、现在和未来。

关键词：创客空间微控制器贸易展程序员实验室专业人士

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LittlevGL不只是某些人的项目!——采访LittlevGL的开发者Gabor Kiss-Vamosi

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单片机与嵌入式系统应用 2020年第9期20卷 1-3页

作者： Mathias Claußen jens nickel 君谦(译) 不详

如今,没有开源库和框架支撑,软件开发就无法正常进行。其中一些库诞生于年轻的私人软件爱好者为自己定制满足特定需求的代码功能。然后,这些项目变得越来越大,并且越来越专业。一个例子就是Gabor Kiss Vamosi开发的LittlevGL库,即使在小... 详细信息

如今,没有开源库和框架支撑,软件开发就无法正常进行。其中一些库诞生于年轻的私人软件爱好者为自己定制满足特定需求的代码功能。然后,这些项目变得越来越大,并且越来越专业。一个例子就是Gabor Kiss Vamosi开发的LittlevGL库,即使在小型RAM的16位微控制器中,它也能够实现触摸图形用户界面访问。在这次采访中,Gábor谈到了他广受欢迎的库的开发背景、一些有趣的细节以及未来的畅想。

关键词：图形用户界面软件开发 Gabor GL 开发背景开发者特定需求 RAM

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Tribological performance of iron- and nickel-base self-lubricating claddings containing metal sulfides at high temperature

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Friction 2022年第12期10卷 2069-2085页

作者： Hector TORRES Tugce CAYKARA jens HARDELL Janne NURMINEN Braham PRAKASH Manel RODRIGUEZ RIPOLL AC2T research GmbH Viktor-Kaplan-Straße 2/CWiener Neustadt 2700Austria Department of Applied Physics and Mechanical Engineering LuleåUniversity of TechnologyLuleå97187Sweden Castolin Eutectic GmbH Gutenbergstraße 10Kriftel 65830Germany Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China

Iron-based coatings with the incorporation of solid lubricants have been prepared by means of laser cladding,in an effort to control friction and decrease tool wear at high temperatures during metal forming *** choice of a Fe-based powder has been considered advantageous,as it can lead to decreased costs compared to nickel-based claddings previously studied by the authors,in addition to having a lower environmental *** particular,the incorporation of transition metal dichalcogenides such as MoS_(2) as precursors leads to the encapsulation of silver in Fe-based self-lubricating claddings,resulting in a uniform distribution of the soft metal across the thickness of the *** tribological evaluation of the claddings at high temperatures shows that the addition of lubricious compounds leads to lower friction at room temperature and significantly decreased wear up to 600℃ compared to the unmodified iron-based reference alloy,although higher than similar self-lubricating Ni-based *** order to cast light into these observed differences,the corresponding microstructures,phase composition,and self-lubricating mechanisms have been studied and compared for Fe-and Ni-based claddings having both of them the addition of silver and MoS_(2).The results suggest a key role of the formation of protective tribolayers on the counter body during high temperature sliding *** simulation of the phase evolution during solidification reveals that the formation of different chromium-and nickel-based metal sulfides in Fe-and Ni-claddings during laser cladding by the decomposition of MoS_(2) plays a key role in determining their tribological behaviour at high temperatures.

关键词： high temperature laser cladding self-lubrication metal forming chromium sulphide MoS_(2)

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Catchment soils as a factor of trace metal accumulation in sediments of the reservoir Klingenberg(eastern Ore Mountains, Germany)

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Journal of Environmental Sciences 2019年第12期31卷 1-14页

作者： jens Hahn Christian Opp Raphael Ganzenmuller Anntke Ewert Birgit Schneider Nina Zitzer Gabriela Laufenberg Philipps-University of Marburg Working Group for Hydro-and Soil GeographyDeutschhausstr.1035037 MarburgGermany University of Leipzig Institute of GeographyPhysical GeographyJohannisallee 19a04103 LeipzigGermany Philipps-Uniuersity o/Marbitrg Mass SpectrometryMarbacher Weg 6-1035037 MarburgGermany

The release and accumulation dynamics of trace metals in soils and aquatic sediments were exemplarily investigated in the catchment area of the Reservoir Klingenberg(Germany).Catchment soils were examined for mobilizable and total concentrations of arsenic(As),cadmium(Cd),chrome(Cr),iron(Fe),manganese(Mn),nickel(Ni),lead(Pb),and zinc(Zn)and compared with trace metal quantities accumulated in riverbed and reservoir *** comparison of all samples showed relatively small variations of Cr(7.96–46.0 mg/kg),Fe(7.79–40.4 g/kg),and Ni(6.06–56.5 mg/kg),while stronger differences were found for As(11.2–164 mg/kg),Cd(0.14–30.5 mg/kg),Mn(0.08–1.84 g/kg),Pb(20.7–183 mg/kg),and Zn(69.1–916 mg/kg).The catchment soils were slightly enriched by Cd,Pb,and *** Cd and Zn were characterized by large mobilizable *** mean trace metal concentrations in riverbed sediments were higher than in catchment soils,while reservoir sediments accumulated the highest amounts of the analyzed *** enrichment of trace metals in reservoir sediments was generally determined by the sedimentation of fine particles,while the distribution of As,Fe,and Mn was additionally impacted by redox *** Cd and Zn,which in comparison were most enriched in riverbed and reservoir sediments,a significant release from soils by leaching processes was *** accumulation of As and Pb in reservoir sediments was influenced to a greater extent by soil erosion and by anthropogenic or chalcogen sources in the catchment.

关键词： Trace metals Exchangeable forms Soil Sediment Catchment Sources

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