Water is a prime resource for any community, whether it is for household cleaning, sanitation, economic use or recreational purposes. In this paper a biological wastewater treatment process was studied, a membrane bioreactor under aerobic conditions was constructed. Different simulations were tried and several factors and parameters were emphasized. First, the membrane bioreactor was tested in ...

A membrane bioreactor (MBR) system based on a dead-end immersed hollow fiber membrane and filamentous fungus Aspergillus oryzae were used for treatment of baker’s yeast wastewater. The fungus was adapted to the wastewater in the bioreactor for two weeks before starting the continuous process. Average organic loading rate of 4.2 kg COD/m3.d was entered the bioreactor. MBR system was able to redu...

the mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. a gas-induced external airlift loop bioreactor (ealb), a forced-liquid vertical tubular loop bioreactor (vtlb) and a forced-liquid horizontal tubular loop bioreactor (htlb) were used for mixing studies as well as biomass production from natural gas. the effect of design parameters, riser to downcomer cross s...

Contents 1. Introduction 2. The P. pastoris expression system 2.1. The AOX1 promoter and alternative promoters 2.1.1 AOX1 promoter. 2.1.2. Strongly expressed alternative promoters. 2.1.3. Moderately expressed alternative promoters. 2.2. Host strains 2.2.1. Methanol utilization phenotype 2.2.2. Protease-deficient host strains 2.3. Expression vectors 3. Bioreactor process techniques for productio...

Aim: This paper focus is to describe and evaluate the authors' personal technique for a simplified transpalpebral eyebrow lift. Methods: We performed surgery in 179 patients (95% females and 5% males) between years of 2008 and 2009. Initially, a thorough assessment of brow stability and symmetry was performed. To achieve desirable aesthetic we agreed upon the consensus that the eyebrow lateral ...

the possibility of applying membrane distillation to support the fermentation process was investigated. the capillary polypropylene membranes were assembled in the membrane modules. the studies were carried out using the standard solutions containing the compounds frequently occurring in the broths such as ethanol, citric, acetic and lactic acids, glycerol and 1,3-propanediol. the performance o...

background and aim:  although there have been substantial developments in dental implant therapies, achieving good implant stability (isq >60) for implants inserted in augmented sinus sites appears to be challenging in comparison with non-augmented sites due to the high prevalence of bone resorption in posterior regions of maxilla. this study aimed to evaluate and compare the time required to a...

The mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. A gas-induced External Airlift Loop Bioreactor (EALB), a forced-liquid Vertical Tubular Loop Bioreactor (VTLB) and a forced-liquid Horizontal Tubular Loop Bioreactor (HTLB) were used for mixing studies as well as biomass production from natural gas. The effect of design parameters, riser to downcomer cro...

Hydrodynamic forces in bioreactors can decisively influence extracellular matrix deposition in engineered cartilage constructs. In the present study, the reduced fluid shear, high-axial mixing environment provided by a wavy-walled bioreactor was exploited in the cultivation of cartilage constructs using polyglycolic acid scaffolds seeded with bovine articular chondrocytes. Increased growth as d...