Results 71 to 80 of about 377,794 (331)

On the Effect of Heat Input and Interpass Temperature on the Performance of Inconel 625 Alloy Deposited Using Wire Arc Additive Manufacturing–Cold Metal Transfer Process

Metals, 2021
Relatively high heat input and heat accumulation are treated as critical challenges to affect the qualities and performances of components fabricated by wire arc additive manufacturing (WAAM). In this study, various heat inputs, namely 276, 552 and 828 J/
Chengxun Zhang, Zhijun Qiu, Hanliang Zhu, Zhiyang Wang, Ondrej Muránsky, Mihail Ionescu, Zengxi Pan, Jiangtao Xi, Huijun Li   +8 more
doaj   +1 more source

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng, Mengran Li, Vanessa K. Peterson, Rijia Lin, Anita D'Angelo, Olexandra Marenych, Anya Yago, Dominique Appadoo, Tianjiu Zhu, Muhammad Yazid Bin Zulkifli, Shuai Gao, Yuming Wu, Xiaohe Tian, Xiaoyang Du, Zhonghua Zhu   +14 more
wiley   +1 more source

Molecular Scale Studies of Phosphorus Speciation and Transformation in Manure Amended and Microdose Fertilized Indigenous Vegetable Production Systems of Nigeria and Republic of Benin

Soil Systems, 2020
This study investigated the speciation, transformation, and availability of P during indigenous vegetable production by employing a combination of chemical and spectroscopic techniques.
Abimfoluwa Olaleye, Durodoluwa Oyedele, Pierre Akponikpe, Gourango Kar, Derek Peak   +4 more
doaj   +1 more source

Retrieving Tarnished Daguerreotype Content Using X-ray Fluorescence Imaging—Recent Observations on the Effect of Chemical and Electrochemical Cleaning Methods

Heritage, 2021
We report a study on the effect of chemical and electrochemical cleaning of tarnished daguerreotypes observed using X-ray fluorescence (XRF) microscopy with a micro-focussed X-ray beam from a synchrotron source.
Alison Stark, Fraser Filice, James J. Noël, Ronald R. Martin, Tsun-Kong Sham, Yanhui Zou Finfrock, Steve M. Heald   +6 more
doaj   +1 more source

Polarized galactic synchrotron and dust emission and their correlation

, 2015
We present an analysis of the level of polarized dust and synchrotron emission using the WMAP9 and Planck data. The primary goal of this study is to inform the assessment of foreground contamination in the cosmic microwave background (CMB) measurements ...
Choi, Steve K., Page, Lyman A.
core   +1 more source

On Spectral and Temporal Variability in Blazars and Gamma Ray Bursts [PDF]

, 1998
A simple model for variability in relativistic plasma outflows is studied, in which nonthermal electrons are continuously and uniformly injected in the comoving frame over a time interval dt.
Charles D. Dermer, Idesawa E., Kirk J. G., Piro L., Tashiro M.   +4 more
core   +3 more sources

Toward Architected Microstructures Using Advanced Laser Beam Shaping in Laser Powder Bed Fusion of Ti‐6Al‐4V

Advanced Functional Materials, EarlyView.
This research applies advanced laser beam shaping (LCoS‐SLM) to fabricate the Ti‐6Al‐4V alloy via laser powder bed fusion. A tailored beam is used to prevent martensite formation and create a dual α+β microstructure by controlling cooling rates.
Reza Esmaeilzadeh, Jamasp Jhabvala, Lucas Schlenger, Mathijs van der Meer, Eric Boillat, Cyril Cayron, Amir Mohammad Jamili, Junfeng Xiao, Roland E. Logé   +8 more
wiley   +1 more source

Synchrotron X-ray Analysis of the Influence of the Magnesium Content on the Absorptance during Full-Penetration Laser Welding of Aluminum

Metals, 2021
Full-penetration laser beam welding is characterized by a weld seam whose depth equals the material thickness. It is associated with a stable capillary and is therefore widely used for welding of sheet metal components.
Jonas Wagner, Christian Hagenlocher, Marc Hummel, Alexander Olowinsky, Rudolf Weber, Thomas Graf   +5 more
doaj   +1 more source

Spin echo in synchrotrons [PDF]

Physical Review Special Topics - Accelerators and Beams, 2007
As a polarized beam is accelerated through a depolarization resonance, its polarization is reduced by a well-defined calculable reduction factor. When the beam subsequently crosses a second resonance, the final beam polarization is considered to be reduced by the product of the two reduction factors corresponding to the two crossings, each calculated ...
Chao, Alexander W., Courant, Ernest D.
openaire   +3 more sources

Synchrotron emission in molecular cloud cores: the SKA view [PDF]

, 2018
Understanding the role of magnetic fields in star-forming regions is of fundamental importance. In the near future, the exceptional sensitivity of SKA will offer a unique opportunity to evaluate the magnetic field strength in molecular clouds and cloud ...
Galli, Daniele, Padovani, Marco
core   +2 more sources