Real-Time in Situ Investigation of Supramolecular Shape Memory Process by Fluorescence Switching

2018 ◽  
Vol 122 (17) ◽  
pp. 9499-9506 ◽  
Author(s):  
Wei Lu ◽  
Chunxin Ma ◽  
Dong Zhang ◽  
Xiaoxia Le ◽  
Jiawei Zhang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Real Time ◽  
Memory Process ◽  
In Situ Investigation ◽  
Fluorescence Switching

scholarly journals Real-time in-situ Investigation of III-V Nanowire Growth using Custom-designed Hybrid Chemical Vapor Deposition-TEM

2017 ◽  
Vol 23 (S1) ◽  
pp. 1716-1717 ◽  
Author(s):  
Kimberly Dick Thelander ◽  
L. Reine Wallenberg ◽  
Axel R. Persson ◽  
Marcus Tornberg ◽  
Daniel Jacobsson ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Real Time ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Nanowire Growth ◽  
In Situ Investigation

Real time and in-situ analysis of the gas-emissions of the Eastern Carpathians: results and perspectives

2020 ◽  
Author(s):  
Roland Szalay ◽  
Boglárka-Mercédesz Kis ◽  
Szabolcs Harangi ◽  
László Palcsu ◽  
Marcello Bitetto ◽  
...  
Keyword(s):  
Real Time ◽  
Volcanic Eruptions ◽  
Volcanic Area ◽  
Tectonic Structures ◽  
Gas Emissions ◽  
Volcanic Degassing ◽  
Eastern Carpathians ◽  
In Situ Investigation ◽  
Carpathian Flysch

<p>The Carpathian-Pannonian region was dominated by diverse volcanic activity for the last 20 million years, and even 1 million years ago there was precedent for active zones.  Although volcanic eruptions are very uncommon in the region today, however the frequent earthquakes in the Carpathian-bend, the numerous appearance and intense manifestation of gas-emissions in the southeastern areas of the region and many petrochemical and geochemical volcanologic studies as well, indicate that the area is likely not completely inactive. The gas emissions investigated by us may be directly related to these geodynamic processes [1].</p><p>In Romania, the Eastern Carpathian Neogene-Quaternary volcanic chain and it’s neighbouring zones contain most of the carbon dioxide rich gas emissions, which also occur in the form of natural mofettes, bubbling pools and springs. They can appear in frequently populated settlements more often in cellars, which puts the inhabitants in direct danger due the lack of information in the public knowledge.</p><p>The motivation of our work is to gather real time and in-situ information with the help of Multi-Gas instrument about the composition of the gas-emissions across the Eastern Carpathians and to create a high resolution geological map from the measured sites in the mentioned area above. Furthermore, we would like to clarify if there is any relation between the tectonic characteristics of the study area and the manifestation, concentration of gas-emissions.</p><p>In total, 205 gas emissions were investigated for their CO<sub>2 </sub>(0-100%), CH<sub>4 </sub>(0-7%) and H<sub>2</sub>S (0-200 ppm) concentrations. The composition of the different gas-species varied according to the geological context. The <strong>CO<sub>2</sub></strong> concentrations varied between 0.96 and 98.08 %. The highest values were measured in the the Quaternary volcanic area of Ciomad, and also in the neighbouring thrusted and folded area of the Carpathian Flysch which suggests a tectonic control over the appearance of the gas emissions.</p><p>The <strong>CH<sub>4</sub></strong> concentrations ranged between 0.21 and 6.76% and were higher at hydrocarbon-prone areas, such as the sedimentary deposits of the Transylvanian Basin and Carpathian Flysch. In these cases the CO<sub>2</sub> concentrations were low (up to 4.6%).</p><p>The <strong>H<sub>2</sub>S</strong> concentrations varied between 0.21 and 200 ppm, according to our knowledge, these are the first H<sub>2</sub>S in-situ measurements in the gas emissions of the study area. The concentrations of H<sub>2</sub>S were higher at the volcanic area of Ciomad, reaching values above the detection limit (~200 ppm) which are related to volcanic degassing.</p><p>In conclusion, based on the investigated sites, there is a spatial correlation between the appearance of mineral water springs, gas emissions on surface and the neighbouring tectonic structures. The Multi-Gas proved to be a useful tool in the in-situ investigation of gas emissions of the Eastern Carpathians, being efficient especially for the measurement of the H<sub>2</sub>S concentrations that are very sensitive for oxidation processes.</p><p><strong>Bibliography:</strong></p><p>1.Kis B.M., Caracusi, A., Palcsu, L., Baciu, C., Ionescu, A., Futó, I., Sciarra, A., Harangi, Sz., Noble Gas and Carbon Isotope Systematics at the Seemingly Inactive Ciomadul Volcano (Eastern‐Central Europe, Romania): Evidence for Volcanic Degassing, Geochemistry, Geophysics, Geosystems, vol.20, issue 6, 2019, 3019-3043.</p>

Real-Time Investigation of Solid and Liquid State Reactions In Au-Sn/Cu System

1989 ◽  
Vol 167 ◽  
Author(s):  
Seyong Oh ◽  
Igor Y. Khandros ◽  
Janet L. Poetzinger
Keyword(s):  
Real Time ◽  
Melting Temperature ◽  
Liquid State ◽  
Eutectic Temperature ◽  
Phase Changes ◽  
X Ray ◽  
Analysis Technique ◽  
In Situ Investigation

AbstractA real-time x-ray analysis technique has been developed and employed for in-situ investigation of solid and liquid state reactions in Au-Sn/Cu system as a function of temperature. Typically, 1 μm eutectic Au-Sn films were deposited on 1.5 μm Cu layers on Si wafers. Phase changes in Au-Sn films on Cu from ambient to above the eutectic temperature have been investigated. Cu diffusion into Au-Sn film above 250 °C resulted in a ternary Au-Sn-Cu compound and raised the melting temperature of the structure to about 325 °C. This affects joining characteristics of the Au-Sn metallization.

scholarly journals In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock

2017 ◽  
Vol 114 ◽  
pp. 69-75 ◽  
Author(s):  
Xi Wang ◽  
Weiguang Xia ◽  
Xianqian Wu ◽  
Yanpeng Wei ◽  
Chenguang Huang
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Dynamic Deformation ◽  
In Situ Investigation ◽  
Niti Shape Memory Alloys

Real-Time and in Situ Investigation of “Living”/Controlled Photopolymerization in the Presence of a Trithiocarbonate

2013 ◽  
Vol 46 (7) ◽  
pp. 2576-2582 ◽  
Author(s):  
Hu Wang ◽  
Qianbiao Li ◽  
Jingwen Dai ◽  
Fanfan Du ◽  
Haiting Zheng ◽  
...  
Keyword(s):  
Real Time ◽  
In Situ Investigation

Real-time in-situ investigation of copper ultrathin films growth

2018 ◽  
Vol 232 ◽  
pp. 216-219 ◽  
Author(s):  
Alexandr Belosludtsev ◽  
Naglis Kyžas
Keyword(s):  
Real Time ◽  
Ultrathin Films ◽  
In Situ Investigation

In situ investigation on the role of hydrogen evolution on the estimated metastable pit sizes in an Al-Mg alloy

CORROSION ◽  
10.5006/3688 ◽  
2021 ◽  
Author(s):  
Gayathri Sridhar ◽  
Nick Birbilis ◽  
VS Raja
Keyword(s):  
Real Time ◽  
Hydrogen Evolution ◽  
Time Lapse ◽  
Mg Alloy ◽  
Hydrogen Bubbles ◽  
In Situ Investigation ◽  
Optical Time ◽  
Time Lapse Imaging ◽  
Current Transients

The fraction of pit dissolution charge that contributes to hydrogen evolution (HE) occurring within metastable pits (analyzed in real-time) was determined to evaluate the error it introduces in the pit size estimations derived merely from the analysis of dissolution current. With in situ optical time-lapse imaging, the charge consumed by HE (C<sub>HE</sub>) during the current transients was determined from the size of the hydrogen bubbles evolving at real-time metastable pit locations in an aged Al-Mg alloy. The ratio C<sub>HE</sub>/C<sub>pit</sub> was observed to range between 0.019 and 0.052 depending on the charge of the transient. This difference was attributed to the catalytic nature of the pit surface that develops as a consequence of the pertinent pitting mechanism. Therefore, it was concluded that the HE within the metastable pits might not play a significant role in the underestimation of metastable pit sizes determined from the current transients recorded at anodic potentials below E<sub>pit</sub>.

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