scholarly journals Inversion and Evolution of Suspended Substance Concentration in Wuzhizhou Island Waters

2018 ◽  
Author(s):  
Feng-Xia WANG ◽  
Hui-Hui YAN
Keyword(s):  
Substance Concentration ◽  
Suspended Substance

Research on the Microbiologic Property of Biological Aerated Filters Biomembrane

2010 ◽  
Vol 113-116 ◽  
pp. 1394-1397
Author(s):  
Shan Qiu ◽  
Fang Ma ◽  
Li Li Feng ◽  
Yuan Chen ◽  
Chong Tan
Keyword(s):  
Dissolved Oxygen ◽  
Organic Substance ◽  
Flow Direction ◽  
Laboratory Simulation ◽  
Substance Concentration ◽  
Suspended Substance

The concentration of dissolved oxygen (DO) and organics in biological aerated filters (BAFs) changes with the height. Due to the different microbiologic property distributions in different heights, biomass and bioactivity also vary with the height. By monitoring biomembranes at different heights in a laboratory simulation reactor, we found that owing to the decrease of organic substance concentration, biomass decreased with the change of height; bioactivity showed V shaped changes with the height, and due to the influence of intercepted suspended substance, bioactivity in the middle and lower levels were the lowest. Observation on the biomembrane biofacies showed that biomembrane became thinner along with the flow direction, i.e. from 700μm to 100μm, and the colour became lighter. Biofacies changed from lower level to higher level, forming a complete biosystem.

Fed-batch cultures of recombinant Escherichia coli with inhibitory substance concentration monitoring

1988 ◽  
Vol 66 (2) ◽  
pp. 187-191 ◽  
Author(s):  
Norio Shimizu ◽  
Shinichi Fukuzono ◽  
Kiyoshi Fujimori ◽  
Nabuko Nishimura ◽  
Yoji Odawara
Keyword(s):  
Escherichia Coli ◽  
Recombinant Escherichia Coli ◽  
Fed Batch ◽  
Inhibitory Substance ◽  
Batch Cultures ◽  
Substance Concentration

A Ceramic Tubular Probe For Online Substance Concentration Measurement, Manufactured By Ceramic Injection Molding

2012 ◽  
Vol 2012 (1) ◽  
pp. 000604-000608
Author(s):  
Matthias Hartmann ◽  
Bertram Schmidt
Keyword(s):  
Injection Molding ◽  
Zirconium Oxide ◽  
Large Scale ◽  
Low Cost ◽  
Tetragonal Zirconia ◽  
Scale Production ◽  
Ceramic Injection Molding ◽  
Substance Concentration ◽  
Sensor Effect ◽  
Concentration Measurements

The current research presents recent respective to the work development of a ceramic tubular probe for online substance concentration measurements. The aim was to develop a robust and acid-resistant sensor device, which can be easily included in existing procedural pipeline systems. To archive those goals a lot of factors had to be checked. For the substance concentration measurements a capacitive sensor effect was chosen. With this method even low substance concentrations down to one-tenth of a per cent can be indentified. For the package material zirconium oxide (tetragonal zirconia polycrystal – TZP) was used. Zirconium oxide is a technical ceramic which is wear-resistant, acid-resistant, has a low thermal conductivity, is electrically isolating and can be uses in a ceramic injection molding (CIM) process. In the phase of the sensor design process multiple geometries for the sensor effect and integration space for the evaluation electronics had to be considered. A standardized DN 10 DIN 32676 flanged joint was also added for an unproblematic connection to the pipelines. All these needed geometries had to be integrated into one ceramic element. As a result of these requirements a 3D CAD model of the sensor element was designed. The CAD-file has shown that there was only the CIM technology left to comprehend developed sensor geometry. CIM is a low cost process for large-scale production which is distinguished by high size accuracy. In the CIM process the material shrinkage, this is caused by the needed debindering and sintering steps, had to be considered. The developed ceramic tubular probe was successfully tested in multiple fluidic systems. It has left the test phase and is now ready for maturity phase.

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