scholarly journals Investigation of Optimum Firing Degree of Calcined Dolomite Used for Insolubilization Treatment of Heavy Metals and Analysis on Crystal Structure Change of Dolomite by Firing

2019 ◽  
Vol 68 (6) ◽  
pp. 470-477
Author(s):  
Yuki ITAYA ◽  
Kenji KUNINISHI
Keyword(s):  
Crystal Structure ◽  
Heavy Metals ◽  
Structure Change ◽  
Optimum Firing

Effect on Compressive Strength by Mixing Ratio of MSWI Melting Slag/Bottom Ash

2009 ◽  
Vol 620-622 ◽  
pp. 631-634
Author(s):  
Woo Keun Lee ◽  
Eun Zoo Park ◽  
Ji Hyeon Lee ◽  
Yeong Seok Yoo
Keyword(s):  
Crystal Structure ◽  
Heavy Metals ◽  
Compressive Strength ◽  
Bottom Ash ◽  
Environmental Safety ◽  
Resource Conservation ◽  
Leaching Test ◽  
Mixing Ratio ◽  
Mswi Bottom Ash ◽  
Melting Slag

In this work, inorganic paste was made from melting slag (MS) of MSWI ash and MSWI bottom ash (MBA) by geopolymer technique. Heavy metals such as Pb and Cu are highly contained in MBA. In the view of environmental protection and resource conservation, recycling of MSWI ash is desirable. MS and MBA were mixed to make inorganic paste. Compressive strength was measured to evaluate the characteristics of inorganic paste after the period of 1, 3 and 7day. Compressive strength of almost 90 MPa was obtained at the mixing ratio of MS : MBA = 9 : 1. And the crystalloid and crystal structure was analyzed by FTIR and XRD. Korea Standard leaching Test (KSLT) is also used to evaluate the environmental safety of inorganic paste. The leached concentration of Pb and Cu were 0.44 ppm and 0.15 ppm, respectively. According to this result, heavy metals were safety immobilized and stabilized.

The structure of urease inactivated by Ag(i): a new paradigm for enzyme inhibition by heavy metals

2018 ◽  
Vol 47 (25) ◽  
pp. 8240-8247 ◽  
Author(s):  
Luca Mazzei ◽  
Michele Cianci ◽  
Antonio Gonzalez Vara ◽  
Stefano Ciurli
Keyword(s):  
Crystal Structure ◽  
Heavy Metals ◽  
Enzyme Inhibition ◽  
Virulence Factor ◽  
Soil Nitrogen ◽  
Nitrogen Fertilization ◽  
Enzyme Complex ◽  
Human Pathogens ◽  
New Paradigm

The molecular details of the inactivation of urease, a nickel-dependent virulence factor for human pathogens and negatively affecting the efficiency of soil nitrogen fertilization, are elucidated through the crystal structure of the enzyme complex with Ag(i).

Growth of 130 μm Thick Epitaxial KNbO3 Film by Hydrothermal Method

2013 ◽  
Vol 1494 ◽  
pp. 291-296 ◽  
Author(s):  
T. Shiraishi ◽  
H. Einishi ◽  
M. Ishikawa ◽  
T. Hasegawa ◽  
M. Kurosawa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Film Thickness ◽  
Hydrothermal Method ◽  
Thick Film ◽  
Xrd Analysis ◽  
Structure Change ◽  
Thickness Direction ◽  
Cross Sectional ◽  
Sem Observation ◽  
Raman Spectral

ABSTRACTKNbO3 thick films were deposited on (100)c SrRuO3//(100)SrTiO3 substrates at 240 °C for 3 h by hydrothermal method. Film thickness increased linearly with increasing the deposition number of times and 130 μm thickness was achieved by the 6 time deposition. XRD analysis showed the growth of epitaxial orthorhombic films with the mixture orientation of (100), (010) and (001). Cross-sectional SEM observation showed that the 130 μm-thick film was dense and no obvious voids inside the film. In addition, the crystal structure change along film thickness direction was not detected from the cross-sectional Raman spectral observation.

scholarly journals Crystal Structure Change of Thermistor of Mn-Co-Ni Oxides in Firing Process

1987 ◽  
Vol 95 (1099) ◽  
pp. 336-340 ◽  
Author(s):  
Takeshi MEGURO ◽  
Tadashi SASAMOTO ◽  
Takashi YOKOYAMA ◽  
Satoru YAMADA ◽  
Yoshiaki ABE ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structure Change ◽  
Firing Process

scholarly journals Crystal structure change in multilayer GeH flakes by hydrogen desorption under ultrahigh vacuum environments

2021 ◽  
Author(s):  
Mai Itoh ◽  
Masaaki ARAIDAI ◽  
Akio OHTA ◽  
Osamu Nakatsuka ◽  
Masashi Kurosawa
Keyword(s):  
Crystal Structure ◽  
Mass Loss ◽  
Thermal Desorption ◽  
Ultrahigh Vacuum ◽  
Thermal Desorption Spectroscopy ◽  
Hydrogen Desorption ◽  
Structure Change ◽  
Spectroscopy Analysis ◽  
Free Standing ◽  
Short Time

Abstract To confirm the feasibility of the theoretically proposed method of forming free-standing germanene [Araidai et al., J. Appl. Phys. 128, 125301 (2020).], we have experimentally investigated hydrogen desorption properties from the hydrogen-terminated germanane (GeH) flakes. Thermal desorption spectroscopy analysis revealed that hydrogen desorption occurred during the heating under an ultrahigh vacuum environment, corresponding to mass loss of 1.0 wt%. Moreover, we have found that using an ultrahigh vacuum ambient and short-time annealing for hydrogen desorption is a key to sustain the crystal structures.

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