نتایج جستجو برای: loop bioreactors

تعداد نتایج: 132938  

Journal: :Applied and environmental microbiology 1992
N Kataoka Y Tokiwa Y Tanaka K Fujiki H Taroda K Takeda

Characteristic sludge ecosystems arising in anaerobic membrane bioreactors of three pilot-scale plants treating low-strength (less than 1 g of biological oxygen demand per liter) sewage or soybean-processing wastewater were examined by analysis of the colony-forming-curves (CFC) obtained by counting colonies at suitable intervals. The wastewaters, containing high amounts of suspended solids (SS...

Journal: :Cytotechnology 1995
B O Palsson D J Oh M R Koller

The capability to expand human bone marrow mononuclear cells (BM MNC) in high density perfusion culture chambers (bioreactors) has recently been developed. In these bioreactors, total cell colony-forming unit-granulocyte/macrophage (CFU-GM), and long-term culture-initiating cell (LTC-IC) numbers increase significantly over a 14-day period. However, cell growth ceases after the 14-day period, po...

Journal: :Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA 2012
H M Lo C F Chiang H C Tsao T Y Pai M H Liu T A Kurniawan K P Chao C T Liou K C Lin C Y Chang S C Wang C J Banks C Y Lin W F Liu P H Chen C K Chen H Y Chiu H Y Wu T W Chao Y R Chen D W Liou F C Lo

This study aimed to investigate the effects of eight metals on the anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) in bioreactors. Anaerobic bioreactors containing 200 mL MSW mixed completely with 200 m L sludge seeding. Ca and K (0, 1000, 2000 and 6,000 mg L(-1)) and Cr, Ni, Zn, Co, Mo and W (0, 5, 50 and 100 mg  L(-1)) of various dose were added to anaerobic biore...

2016
Parissa Mirjafari Susan A. Baldwin

Successful long-term bioremediation of mining-influenced water using complex organic matter and naturally-occurring microorganisms in sub-surface flow constructed wetlands requires a balance between easily and more slowly degrading material. This can be achieved by combining different types of organic materials. To provide guidance on what mixture combinations to use, information is needed on h...

Journal: :Neuro-oncology 2001
T Visted R Bjerkvig P O Enger

Gene therapy using viral vectors has to date failed to reveal its definitive clinical usefulness. Cell encapsulation technology represents an alternative, nonviral approach for the delivery of biologically active compounds to tumors. This strategy involves the use of genetically engineered producer cells that secrete a protein with therapeutic potential. The cells are encapsulated in an immunoi...

Journal: :International journal of molecular sciences 2016
Fanny Knöspel Frank Jacobs Nora Freyer Georg Damm An De Bondt Ilse van den Wyngaert Jan Snoeys Mario Monshouwer Marco Richter Nadja Strahl Daniel Seehofer Katrin Zeilinger

Accurate prediction of the potential hepatotoxic nature of new pharmaceuticals remains highly challenging. Therefore, novel in vitro models with improved external validity are needed to investigate hepatic metabolism and timely identify any toxicity of drugs in humans. In this study, we examined the effects of diclofenac, as a model substance with a known risk of hepatotoxicity in vivo, in a dy...

Journal: :Talanta 2011
Raquel B R Mesquita Inês C Santos Marta F F Pedrosa Anouk F Duque Paula M L Castro António O S S Rangel

Water treatment has become a source of concern as new pollutants and higher volumes of waste water must be treated. Emerging biological approaches, namely the use of bioreactors, for cleaning processes have been introduced. The use of bioreactors requires the development of efficient monitoring tools, preferably with real-time measurements. In this work, a couple of flow injection systems were ...

2012
Ivan Ňancucheo D. Barrie Johnson

Two continuous-flow bench-scale bioreactor systems populated by mixed communities of acidophilic sulfate-reducing bacteria were constructed and tested for their abilities to promote the selective precipitation of transition metals (as sulfides) present in synthetic mine waters, using glycerol as electron donor. The objective with the first system (selective precipitation of copper from acidic m...

Journal: :Stem cells international 2016
Valentin Jossen Cedric Schirmer Dolman Mostafa Sindi Regine Eibl Matthias Kraume Ralf Pörtner Dieter Eibl

The potential of human mesenchymal stem cells (hMSCs) for allogeneic cell therapies has created a large amount of interest. However, this presupposes the availability of efficient scale-up procedures. Promising results have been reported for stirred bioreactors that operate with microcarriers. Recent publications focusing on microcarrier-based stirred bioreactors have demonstrated the successfu...

Journal: :Bone 2011
Andrew B Yeatts John P Fisher

A bone tissue engineering strategy involving the in vitro expansion of cells on a scaffold before implantation into the body represents a promising alternative to current clinical treatments. To improve in vitro culture, bioreactor systems have been widely researched for bone tissue engineering purposes. Spinner flask, rotating wall bioreactors, and perfusion systems have all been the focus of ...

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