An experimental study on the budget of organic carbon in polyculture systems of swimming crab with white shrimp and short-necked clam

Aquaculture ◽  
2016 ◽  
Vol 451 ◽  
pp. 58-64 ◽  
Author(s):  
Kai Zhang ◽  
Xiang-li Tian ◽  
Shuang-lin Dong ◽  
Jie Feng ◽  
Rui-peng He
Keyword(s):  
Experimental Study ◽  
Organic Carbon ◽  
White Shrimp ◽  
Swimming Crab

scholarly journals Impact of Submerged Macrophytes on Behavior of Organic Carbon and Nutrients: An Experimental Study

2021 ◽  
Vol 19 (1) ◽  
pp. 35-47
Author(s):  
Keiko Wada ◽  
Naoyuki Kishimoto ◽  
Isao Somiya ◽  
Toshihiko Sato ◽  
Kazunori Ueno
Keyword(s):  
Experimental Study ◽  
Organic Carbon ◽  
Submerged Macrophytes

An experimental study on aerobic denitrification with polyvinyl alcohol as a carbon source in biofilms

1995 ◽  
Vol 32 (8) ◽  
pp. 235-242 ◽  
Author(s):  
D.-Y. Bang ◽  
Y. Watanabe ◽  
T. Noike
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Surface Layer ◽  
Carbon Source ◽  
Organic Carbon ◽  
Polyvinyl Alcohol ◽  
Dissolved Oxygen ◽  
Aerobic Denitrification ◽  
Dissolved Oxygen Concentration ◽  
Organic Carbon Source

Aerobic denitrification occuring in the biofilms attached to a partially submerged RBC, was investigated. Denitrification using polyvinyl alcohol (PVA) as a organic carbon source, was well proceeded by aerobic RBC systems at 25 °C. At an influent C/N ratio of around 1.2, the maximum net-denitrification efficiency was about 78% at a TOC loading of 2g/m2/d. In a chemostat experiment, aerobic denitrification was well proceeded under the dissolved oxygen concentration of 3 to 6 mg/L. The PVA-decomposing bacteria, nitrifiers, and denitrifiers co-existed in the biofilm, but the population of PVA-decomposing bacteria and denitrifiers in the surface layer was 1 to 2 orders of magnitude higher than those in the middle and bottom layers. It may indicate that the surface layer had a higher denitrifying activity. The nitrogen mass balance obtained using the experimental data clearly indicates a reasoning for aerobic denitrification.

Experimental study on the abatement of ammonia and organic carbon with ozone

2012 ◽  
Vol 37 (1-3) ◽  
pp. 130-138 ◽  
Author(s):  
Barbara Ruffino ◽  
Maria Chiara Zanetti
Keyword(s):  
Experimental Study ◽  
Organic Carbon

scholarly journals Organic carbon source and C/N ratio affect inorganic nitrogen profile in the biofloc-based culture media of Pacific white shrimp (Litopenaeus vannamei)

2016 ◽  
Vol 21 (1) ◽  
pp. 23 ◽  
Author(s):  
Muhammad Hanif Azhar ◽  
Eddy Supriyono ◽  
Kukuh Nirmala ◽  
Julie Ekasari
Keyword(s):  
Carbon Source ◽  
Organic Carbon ◽  
Rice Bran ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Shrimp Culture ◽  
Technology Application ◽  
Total Ammonia ◽  
Biofloc Technology ◽  
Organic Carbon Source

Organic carbon source and C/N ratio play an important role in aquaculture system with biofloc technology application. Nitrogen control by adding carbohydrates to the water to stimulate heterotrophic bacterial growth by converting nitrogen into bacterial biomass. The study investigated the effect molasses, tapioca, tapioca by product and rice bran as carbon sources in a biofloc media at three different C/N ratios i.e. 10, 15, and 20 on total ammonia reduction in biofloc media. Five liters of biofloc media in a conical tank was prepared for each replicate, which consisted of 500 mL of biofloc suspension collected from a shrimp culture unit with biofloc technology application and 4.5 L seawater. Pacific white shrimp culture was performed in 40L glass aquaria at a shrimp density of 30/aquarium. There was a significant interaction between carbon source and the C/N ratio applied (P<0.05). The use of molasses resulted in the highest reduction rate irrespective to the C/N ratio. Keywords: molasses, tapioca, tapioca by product, rice bran, biofloc, total ammonia nitrogen

Brewery residues as a source of organic carbon in Litopenaeus schmitti white shrimp farms with BFT systems

2014 ◽  
Vol 23 (2) ◽  
pp. 509-522 ◽  
Author(s):  
Michelle Midori Sena Fugimura ◽  
Helaine dos Reis Flor ◽  
Emanuela Paula de Melo ◽  
Tiago Viana da Costa ◽  
Wilson Wasielesky ◽  
...  
Keyword(s):  
Organic Carbon ◽  
White Shrimp ◽  
Shrimp Farms

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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