Doping Behavior of Implanted Magnesium in Silicon

Author(s):  
H. Sigmund ◽  
D. Weiß
Keyword(s):  
2018 ◽  
Vol 101 (6) ◽  
pp. 2527-2536 ◽  
Author(s):  
Yong Tao ◽  
Wenqin Zhang ◽  
Neng Li ◽  
Dechen Shang ◽  
Zhongsheng Xia ◽  
...  

2020 ◽  
Author(s):  
Thaksen Jadhav ◽  
Yuan Fang ◽  
Cheng-Hao Liu ◽  
Afshin Dadvand ◽  
Ehsan Hamzehpoor ◽  
...  

We report the first transformation between crystalline vinylene-linked two-dimensional (2D) polymers and crystalline cyclobutane-linked three-dimensional (3D) polymers. Specifically, absorption-edge irradiation of the 2D poly(arylenevinylene) covalent organic frameworks (COFs) results in topological [2+2] cycloaddition cross-linking the π-stacked layers in 3D COFs. The reaction is reversible and heating to 200°C leads to a cycloreversion while retaining the COF crystallinity. The resulting difference in connectivity is manifested in the change of mechanical and electronic properties, including exfoliation, blue-shifted UV-Vis absorption, altered luminescence, modified band structure and different acid-doping behavior. The Li-impregnated 2D and 3D COFs show a significant ion conductivity of 1.8×10<sup>−4</sup> S/cm and 3.5×10<sup>−5</sup> S/cm, respectively. Even higher room temperature proton conductivity of 1.7×10<sup>-2</sup> S/cm and 2.2×10<sup>-3</sup> S/cm was found for H<sub>2</sub>SO<sub>4</sub>-treated 2D and 3D COFs, respectively.


Author(s):  
Yong Hwan Kim ◽  
Yurian Kim ◽  
Hyun‐Sik Kim ◽  
Soon‐Mok Choi ◽  
Sang‐il Kim ◽  
...  

2020 ◽  
Vol 72 (4) ◽  
Author(s):  
Sime Versic ◽  
Ognjen Uljevic ◽  
Dora Maric ◽  
Damir Sekulic ◽  
Dorica Sajber

2009 ◽  
Vol 311 (10) ◽  
pp. 2817-2820 ◽  
Author(s):  
Md Rafiqul Islam ◽  
K. Sugita ◽  
M. Horie ◽  
A. Hashimoto ◽  
A. Yamamoto
Keyword(s):  

2007 ◽  
Vol 50 (1) ◽  
pp. 18-22 ◽  
Author(s):  
Imit Mokhtar ◽  
Yamamoto Takakazu ◽  
Imin Patigul

2016 ◽  
Vol 30 (1) ◽  
pp. 68-75 ◽  
Author(s):  
Mikel Zabala ◽  
Jaime Morente-Sánchez ◽  
Manuel Mateo-March ◽  
Daniel Sanabria

This study addresses performance-enhancement drug (PED) consumption in amateur sport by investigating the relationship between psychosocial factors and PED use in amateur cyclists. Participants were asked whether they had ever taken PED. They were also asked whether they had any experience in competitive cycling, and the degree to which they participated in the event with a competitive aim. In addition, they completed the Performance Enhancement Attitude Scale, the Rosenberg self-esteem scale, and a bespoke self-efficacy questionnaire, and they rated the percentage of cyclists they believed took PED. Between-groups comparisons and two multiple regression analyses were performed. Overall, the results of our study point to adult amateur cyclists in general, and amateur cyclists with experience in competition in particular, as groups at risk for PED use. This study highlights the value of measuring psychosocial variables as a tool to assess PED use, a current issue at both sport performance and health levels.


2013 ◽  
Vol 652-654 ◽  
pp. 1580-1584
Author(s):  
Yu Jiang Guan ◽  
Zi Bo Wang ◽  
Shu Li Bai ◽  
Qin Xue

N-doped Titanium dioxide (TiO2) nanotube arrays were characterized by scanning electron microscope (SEM),X-ray Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) to analyse its surface morphology, crystal types and the doping behavior of nitrogen. The material was used as electrode for photoelectrocatalytic degradation of hexachlorobenzen under irradiation of simulated sunlight. The effects of photocatalysis, electrocatalysis, photoelectrocatalysis, the concentration of Na2SO4 and pH value on degradation of HCB were investigated.


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