Results 51 to 60 of about 104,345,869 (306)

Design and Application of an in situ NMR Device for Light-Induced Reaction Systems

Chinese Journal of Magnetic Resonance
In the present study, a systematic investigation of photoexcited fluorine supersensitization is carried out using in situ nuclear magnetic resonance (NMR) technique in combination with a newly designed photoresponsive device, and the validity of the ...
SHEN Zhiqiang, DENG Yabo, YANG Peiju, HU Xiaoxue, HUANG Xiaojuan, XU Chuanzhi, SONG Huanling   +6 more
doaj   +1 more source

Structural Health Monitoring of Repairs in Carbon-Fiber-Reinforced Polymer Composites by MWCNT-Based Multiscale Sensors

Energies, 2022
The precision maintenance of delaminated carbon-fiber-reinforced polymer composites calls for the high demand of continuous, in situ monitoring of the damage-repair process along with the in-service status of the repaired region.
Wenlong Hu, Zijie Sun, Lulu Yang, Shuzheng Zhang, Fangxin Wang, Bin Yang, Yu Cang   +6 more
doaj   +1 more source

In Situ Techniques for Monitoring Electrochromism

Journal of Chemical Education, 2010
This experiment employs current technology to enhance and extend existing lab content. The basic principles of spectroscopic and electroanalytical techniques and their use in determining material properties are covered in some detail in many undergraduate chemistry programs.
Saricayir, Hakan, Uce, Musa, Koca, Atf
openaire   +3 more sources

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Embeddable Chloride Sensor for Monitoring Chloride Penetration into Cement Mortar

Sensors
A composite solid chloride sensor consisting of two single sensors, i.e., Ag/AgCl working electrode and Mn/MnO2 reference electrode, was developed.
Min Zhang, Hua Fu, Li Tian, Zhenxing Du, Penggang Wang   +4 more
doaj   +1 more source

Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing

Virtual and Physical Prototyping, 2018
Developing methods which allow real-time monitoring of powder bed fusion (PBF) additive manufacturing (AM) processes is key to enabling in situ assessments of build quality (e.g. lack of fusion and porosity).
Alexander J. Dunbar, Abdalla R. Nassar
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

State of the art detection methods of microplastics as marine litter: a mini review

Discover Oceans
Microplastics have emerged as a significant environmental concern, particularly in marine ecosystems. The detection and quantification of microplastics pose considerable challenges due to their small size, diverse composition, and widespread distribution.
Rajib Biswas
doaj   +1 more source

SMAP soil moisture drying more rapid than observed in situ following rainfall events

Geophysical Research Letters, 2016
We examine soil drying rates by comparing surface soil moisture observations from the NASA Soil Moisture Active Passive (SMAP) mission to those from networks of in situ probes upscaled to SMAP's sensing footprint.
Peter J. Shellito, Eric E. Small, Andreas Colliander, Rajat Bindlish, Michael H. Cosh, Aaron A. Berg, David D. Bosch, Todd G. Caldwell, David C. Goodrich, Heather McNairn, John H. Prueger, Patrick J. Starks, Rogier van derVelde, Jeffrey P. Walker   +13 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source