scholarly journals 3D web freestanding RuO2–Co3O4 nanowires on Ni foam as highly efficient cathode catalysts for Li–O2 batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 23397-23403 ◽  
Author(s):  
Zhuo-Liang Jiang ◽  
Jing Xie ◽  
Cong-Shan Luo ◽  
Meng-Yang Gao ◽  
Huan-Liang Guo ◽  
...  
Keyword(s):  
High Capacity ◽  
Ni Foam ◽  
Term Operation ◽  
Cathode Catalysts ◽  
Highly Efficient ◽  
3D Web

Freestanding RuO2–Co3O4 nanowires on Ni foam were synthesized and applied as a cathode in Li–O2 battery. This cathode can deliver a high capacity of 9620 mA h g−1 and stable long-term operation exceeding 122 cycles at 100 mA g−1.

scholarly journals Ruthenium nanocrystal decorated vertical graphene nanosheets@Ni foam as highly efficient cathode catalysts for lithium-oxygen batteries

2016 ◽  
Vol 8 (7) ◽  
pp. e286-e286 ◽  
Author(s):  
Dawei Su ◽  
Dong Han Seo ◽  
Yuhang Ju ◽  
ZhaoJun Han ◽  
Kostya Ostrikov ◽  
...  
Keyword(s):  
Graphene Nanosheets ◽  
Ni Foam ◽  
Cathode Catalysts ◽  
Highly Efficient ◽  
Lithium Oxygen Batteries

Analysis of crystallite size changes in a hematite and magnetite formed on steel used in the power idustry

2017 ◽  
Vol 1 (21) ◽  
pp. 65-73
Author(s):  
Monika Gwoździk
Keyword(s):  
Elevated Temperature ◽  
Oxide Layer ◽  
Cross Section ◽  
X Ray ◽  
Term Operation ◽  
Diffraction Line Profile ◽  
Crystallite Sizes ◽  
Scherrer Formula ◽  
Pipe Outlet

The paper presents results of studies on the crystallite sizes of oxide layer formed during a long-term operation on 10CrMo9-10 steel at an elevated temperature (T = 545° C, t = 200,000 h). This value was determined by a method based on analysis of the diffraction line profile, according to a Scherrer formula. The oxide layer was studied on a surface and a cross-section at the outer and inner site on the pipe outlet, at the fire and counter-fire wall of the tube. X-ray studies were carried out on the surface of a tube, then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer.

Retention and expression of recombinant plasmids in suspended and biofilm-bound bacteria degrading trichloroethene (TCE)

1997 ◽  
Vol 36 (10) ◽  
pp. 1-8 ◽  
Author(s):  
James D. Bryers ◽  
Robert R. Sharp
Keyword(s):  
Biofilm Reactor ◽  
Bacterial Biofilm ◽  
Laboratory Evaluation ◽  
Recombinant Bacteria ◽  
Suitable Host ◽  
Term Operation ◽  
Open Environment ◽  
Recombinant Microorganisms ◽  
Extracellular Polymer

Exposure of plasmid recombinant microorganisms to an open environment, either inadvertently or intentionally, requires research into those fundamental processes that govern plasmid retention, transfer and expression. In the open environment, a majority of the microbial activity occurs associated with an interface, within thin biological layers consisting of cells and their insoluble extracellular polymer, layers known as biofilms. Current toxic wastewater or wastegas treatment reactors exploit bacterial biofilm systems for certain system operating advantages. Using recombinant bacteria within a biofilm reactor to degrade xenobiotic wastes requires finding a suitable host to harbor and express the desired plasmid phenotype. Suitable host characteristics include: the ability to produce copious amounts of biofilm, resistance to waste-related injury and toxicity, and the ability to retain and express the desired plasmid during long term operation. This paper reports on a laboratory evaluation of factors governing plasmid retention and the expression of trichloroethene (TCE) degradative capacity in both suspended and biofilm cultures.

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