Results 71 to 80 of about 194,021 (297)

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Let’s Build a Medieval Tile Kiln - Introducing Experimental Archaeology into the University Curriculum

EXARC Journal, 2013
As a lecturer at the University of Central Lancashire (UCLAN) I teach a course on medieval archaeology and run a successful programme in designing exhibitions for local museums and community groups.
Gaynor Wood
doaj  

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding, Limeng Song, Wei Li, Jiangtao Hao, Xuewen Jiang, Mengru Li, Xinglai Yuan, Gang Wang, Yanqiu Zhu, Mi Tian, Hailong Wang, Hongxia Li, Biao Zhao, Rui Zhang, Bingbing Fan   +14 more
wiley   +1 more source

An Experimental Approach to Studying the Technology of Pottery Decoration

EXARC Journal, 2014
The early Middle Chalcolithic pottery tradition of Seh Gabi Tepe in Iran is called Dalma tradition. Among the different types of Dalma pottery, I have focused on monochrome painted ceramics, to investigate, by means of experimental analysis, how their ...
Golnaz Hossein Mardi
doaj  

Amphoteric Cu‐Doping Leading to High Thermoelectric Performance in p‐Type Bismuth Antimony Telluride

Advanced Functional Materials, EarlyView.
This study shows that Cu plays two opposite roles in p‐type Bi0.5Sb1.5Te3 depending on the processing route. Under thermodynamic‐equilibrium bulk‐synthesis, Cu mainly occupies cation sites, increases hole concentration, preserves mobility, and slightly reduces lattice heat transport. The best‐performing composition among the investigated series reaches
Moritz Thiem, Zhiyuan Li, Minsu Heo, Fangyi Hu, Tian Lan, Youngdeog Koh, Ruiwen Xie, Chuanmu Tian, Marc Widenmeyer, Hyun‐Sik Kim, Jan P. Hofmann, Yuan Yu, Hongbin Zhang, Anke Weidenkaff, G. Jeffrey Snyder, Wenjie Xie   +15 more
wiley   +1 more source

Problems and Suggested Solutions in the Replication and Operation of a Glass Furnace based on Roman Remains: an Experiment in Glass Production

EXARC Journal, 2016
Experimental archaeology is taking on an ever more important role in pre- and early historical research. The archaeological open-air museum at the exhibition at the Museum of Pre- and Early History in Asparn/Zaya was a centre and teaching site for ...
Ernst Lauermann, Gerhard Putzgruber, D. Götzinger   +2 more
doaj  

Thermal Characteristics of Heating-furnace with Regenerative Burner [PDF]

, 2005
Thermal characteristics between the heating-furnace with regenerative burner and the classical triple-fired continuous furnace by heat balance testing for two billet steel heating-furnace at the same billet steel heating have been analyzed.
HUA, Jianshe, LI, Xiaoming, KAWABATA, Nobuyoshi   +2 more
core  

Lewis Acid Site Engineering in MOF‐Derived Aluminum Oxide/Carbon Composites for Dechlorination of Waste Plastic Pyrolysis Oil

Advanced Functional Materials, EarlyView.
Controlled carbonization of an Al‐MOF partially decomposes its linkers, exposing coordinatively unsaturated Al centers within an oxide/carbon composite. The resulting Lewis acid sites, rather than surface area, govern organochlorine capture: the composite removes chemically diverse organochlorines from waste plastic pyrolysis oil, outperforms a ...
Seong Cheon Kim, Byeongju Jeon, Suk Hyun Lim, Eun Hee Kwon, Nam Sun Nho, Siyoung Q. Choi, Jeasung Park   +6 more
wiley   +1 more source

Kicking Ash, Viking Glass Bead Making

EXARC Journal, 2017
Tens of thousands (Callmer, 1977, pp.12-32) of beads marking the rich graves of the Viking world indicate that the production of these beads is an area worthy of study.
Neil Peterson
doaj  

Copper Smelting Could Have Been Discovered in Connection with the Massive Production of Lime Plaster in the Near East During the Pre-Pottery Neolithic B, which is Much Earlier than Previously Believed

EXARC Journal, 2022
A common theory is that copper smelting first appeared in the Near East in close connection with the early pottery industry. However, copper smelting may well have been discovered many times in history and at many places.
Ulf Fornhammar, Henry Hammarström
doaj