نتایج جستجو برای: natural aeration

تعداد نتایج: 485548  

Journal: :Biotechnology and Bioengineering 2009

Journal: :Chemical engineering 1956

Journal: :Applied microbiology 1964
E N BREWER S KURAISHI J C GARVER F M STRONG

The slime mold, Physarum polycephalum, was cultivated in a soluble natural medium in shake flasks and in 30-liter and 50-gal conventional baffled fermentors. Yields of 6 to 10 g (dry weight) per liter were obtained in the large-scale fermentations. Because of the slow growth of the myxomycete, particular attention had to be paid to aseptic technique. The inability of this organism to withstand ...

2013
A. D. Ghare

Long crested weirs are gaining popularity amongst the hydraulic engineers owing to obvious hydraulic advantage of flow magnification. These weirs can pass much higher floods from the available width of a natural water course. Such weirs may also be introduced in water treatment plants for mixing of chemicals. This paper discusses the advantages of long crested weirs, such as duckbill and labyri...

A Mehrafarin, A Qaderi, AR Zare karizi, F Khalighi-Sigaroodi, H Naghdi Badi, N Qavami,

Background: Nowadays, the optimization of the culture conditions in bioreactors is considered as an approach to produce secondary metabolites such as thebaine. Thebaine is the dominant alkaloid in Iranian poppy that is used as a precursor for the synthesis of analgesic compounds. Objective: Optimization of culture conditions of Papaver bracteatum adventitious roots in bioreactor for the scale...

2016
Samuel S. Liu Frank H. Arthur Douglas VanGundy Thomas W. Phillips

A commercial formulation of the insect growth regulator methoprene was applied to wheat stored in small bins either alone or in combination with controlled aeration of the bins, to lower grain temperature for insect pest management of stored wheat. Grain temperatures were monitored and modified by a computer-controlled thermocouple system that also activated the aeration system at programmed se...

2004
Ramlah Mohd Tajuddin Ahmad Fauzi Ismail Mohd Razman Salim

Aeration is one of the most important factors in biological wastewater treatment process. Through aeration, oxygen is supplied to the bacteria to allow their respiration to proceed rapidly and satisfy the biochemical oxygen demand (BOD). This study was carried out to determine the biological growth in aerated palm oil mill effluent (POME) when subjected to aeration using air of different oxygen...

Journal: :Bio-medical materials and engineering 2014
Wenbo He Yuan Wang Xiaoyan Gong

Generating an artificial blood flow in a circle system is an important step in hemodynamic research; thus, the influence of circle system components on the pulsatile flow wave forms should be investigated. In this study, a circle system was built, in which two solenoid valves were controlled by a timer to transform a constant flow into a pulsatile one, and two customized compliances with five d...

عالی, رحیم, عشایری, عظیم, ناظمی, سعید, هاشم زاده, بایرام, یگانه, جابر,

ABSTRACT Background and objective: Milk and dairy industries wastewater are considered the most polluted effluents, and if discharged without treatment into the environment, can cause serious environmental problems.  In this study, effects of aeration time and lime coagulant on SBR efficiency were investigated. Materials and Method: Two Parallel reactors with a volume of  20 L w...

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