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| 1 | Sludge thickening in a wastewater treatment plant using a modified hydrocyclone显示文摘The main application of hydrocyclones in most industry sectors is the separation of particles from liquids.For thickening,however,the separation properties of the cyclone should be adjustable,which requires a different operating mode.Therefore,we investigated an add-on thickening module,consisting of a conical plug and a secondary vortex finder in the underflow of the hydrocyclone.Laboratory scale experiments are carried out to investigate the function of the concept of annular gap modification by the use of the thickening module.In the second step,we transferred this concept to industrial scale for field tests at a municipal wastewater treatment plant.In the field tests,geometrical properties(annular gap modification)and operational parameters(volume flow rate,sludge type)were investigated.The results show that thickening in terms of increasing the total solids content of sludge is possible with the modified hydrocyclone.In the field tests,a thickening factor(total solids content of thickened sludge related to feed sludge)of 1.31(average)was reached for digested sludge.Hence,a hydrocyclone could be a promising addition in wastewater treatment plants for dewatering of sludge. | Thomas Senfter Lukas Fritsch Manuel Berger Tobias Kofler Christian Mayerl Martin Pillei Michael Kraxner | 2021 | Carbon Resources Conversion2021，4，1： | 3 |
| 2 | Innovation, regional knowledge spillovers and R&D; cooperation显示文摘 | Michael Fritsch Grit Franke | 2003 | Research Policy2003，，2： | 3 |
| 3 | Methylene blue-aided chromoendoscopy for the detection of intraepithelial neoplasia and colon cancer in ulcerative colitis显示文摘 | Ralf Kiesslich Johannes Fritsch Martin Holtmann Heinz H. Koehler Manfred Stolte Stephan Kanzler Bernhard Nafe Michael Jung Peter R. Galle Markus F. Neurath | 2003 | Gastroenterology2003，，4： | 2 |
| 4 | Allocative Efficiency Measurement Revisited Do We Need Input Prices? 显示文摘 | Oleg Badunenko Michael Fritsch Andreas Stephan | 2008 | Economic Modelling2008，25，5： | 1 |
| 5 | Determinants of the Efficiency of Regional Innovation Systems显示文摘 | Michael Fritsch Viktor Slavtchev | 2011 | Regional Studies2011，45，7： | 1 |
| 6 | Measuring the Knowledge Base of Regional Innovation Systems in Germany in Terms of a Triple Helix dynamies显示文摘 | Loet Leydesdorff Michael Fritsch | 2006 | Research Poliey2006，，12： | 1 |
| 7 | Measuring the Quality of Regional Innovation Systems - A Knowledge Production Function Approach 显示文摘 | Michael Fritsch | 2002 | International Regional Science Review2002，，25： | 1 |
| 8 | The effect of new business formation on regional development over time: the case of Germany显示文摘 | Michael Fritsch Pamela Mueller | 2008 | Small Business Economics2008，，1： | 1 |
| 9 | Product innovation, process innovation, and size 显示文摘 | Michael Fritsch Monika Meschede | 2001 | Review of Industrial Organization2001，19，3： | 1 |
| 10 | Salivary stones:innovative techniques in diagnosis and treatment显示文摘 | Katz Philippe Fritsch Michael | 2003 | Current Opinion in Otolaryngology & Head and Neck Surgery2003，11，： | 1 |
| 11 | Complexed prostate-specific antigen as a staging tool: results based on a multicenter prospective evaluation of complexed prostate-specific antigen in cancer diagnosis显示文摘 | Samir S Taneja Elias I Hsu Carol D Cheli Paul Walden Georg Bartsch Wolfgang Horninger Richard J Babaian Herbert A Fritsche Stacy Childs Thomas A Stamey Lori J Sokoll Daniel W Chan Michael K Brawer Alan W Partin Herbert Lepor | 2002 | Urology2002，，4： | 1 |
| 12 | Universities and innavation in space显示文摘 | Michael Fritsch Viktor Slavtchev | 2007 | Industry and Innovation2007，，14： | 1 |
| 13 | The Im- pact of Network Structure on Knowledge Tranefer: An Application of Social Network Analysis in the Context of Regional Innovation Net- works 显示文摘 | MICHAEL FRITSCH MARTINA KAUFFELD - MONZ | 2010 | The Annals of Regional Science2010，44，1： | 1 |
| 14 | Universities and Innovation in Space 显示文摘 | Michael Fritsch Viktor Slavtchev | 2007 | Industry and Innovation2007，14，2： | 1 |
| 15 | Universities and Innovation in Space 显示文摘 | Michael Fritsch Viktor Slavtchev | 2007 | Industry and Innovation2007，14，2： | 1 |
| 16 | Molecular Cloning of a 1α,25-Dihydroxyvitamin D 3 -Inducible Transcript (DDVit 1) 1 in Human Blood Monocytes显示文摘 | Jana Fritsche Michael Rehli Stefan W. Krause Reinhard Andreesen Marina Kreutz | 1997 | Biochemical and Biophysical Research Communications1997，，2： | 1 |
| 17 | Entrepreurship, Entry and Performance of New Business Compared in two Growth Regions: East and West German 显示文摘 | Michael Fritsch | 2004 | Journal of Evolutionary E conomies2004，14，5： | 1 |
| 18 | Product innovation,process innovation,and size显示文摘 | Michael Fritsch Monika Meschede | 2001 | Review of Industrial Organization2001，19，： | 1 |
| 19 | The GLY972-ARG polymorphism in the insulin receptor substrate-1 gene contributes to the variation in insulin secretion in normal glucose-tolerant humans显示文摘 | Michael Stumvoll Andreas Fritsche Annette Volk | 2001 | Diabetes2001，50，： | 1 |
| 20 | Univer- sities and innovation in space显示文摘 | MICHAEL FRITSCH VIKTOR SLAVTCHEV | 2007 | Industry and Innovation2007，，14： | 1 |
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