A theoretical consideration on oxygen production rate in microalgal cultures

2001 ◽  
Vol 6 (5) ◽  
pp. 352-358 ◽  
Author(s):  
Nag-Jong Kim ◽  
Choul-Gyun Lee
Keyword(s):  
Production Rate ◽  
Theoretical Consideration ◽  
Oxygen Production ◽  
Oxygen Production Rate

Rapid evaluation of algal and cyanobacterial activities through specific oxygen production rate measurement

2014 ◽  
Vol 73 ◽  
pp. 439-445 ◽  
Author(s):  
Tianyu Tang ◽  
Hilda Fadaei ◽  
Zhiqiang Hu
Keyword(s):  
Production Rate ◽  
Rapid Evaluation ◽  
Rate Measurement ◽  
Oxygen Production ◽  
Oxygen Production Rate

Measurements of oxygen production rate in flowing Spirulina suspension

1991 ◽  
Vol 35 (1) ◽  
Author(s):  
Kanji Hoshino ◽  
Mitsuru Hamochi ◽  
Shinji Mitsuhashi ◽  
Kazuo Tanishita
Keyword(s):  
Production Rate ◽  
Oxygen Production ◽  
Oxygen Production Rate

scholarly journals Survival of the scorpion Opistophthalmus pugnax (Scorpionidae) after exposure to a lethal dosage SO2 gas.

2013 ◽  
Vol 32 (1) ◽  
Author(s):  
Willie J. Van Aardt
Keyword(s):  
Production Rate ◽  
High Dose ◽  
Oxygen Production ◽  
Toxic Gases ◽  
Oxygen Production Rate ◽  
Radioactive Radiation ◽  
Lethal Dosage

Scorpions are well known for their ability to adapt to dry habitats, scarcity of food and radioactive radiation. Nothing is known about their response to toxic gases. Results from this experiment showed that a high dose of 1000 parts per million SO2 was not lethal for Opistophthalmus pugnax; compare this to humans who cannot tolerate and survive high SO2 levels. In fact, the oxygen production rate increased from 4.16 µmol/g-1hour-1 to 7.69 µmol/g-1hour-1 after exposure of one hour to SO2. Forty minutes after exposure, ṀO2 was still nearly twice as high compared with the ṀO2 value at the beginning. Further experiments are suggested to solve the problem of possible spiracle occlusion caused by SO2.

scholarly journals Coupling Effect of Metals and Oxides on the Oxygen Supply Performance of Sodium Chlorate Oxygen Candle

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Na Gao ◽  
Chunguo Ma ◽  
Kaeryaer Kariman ◽  
Jianguo Liu ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Production Rate ◽  
Production Efficiency ◽  
Oxygen Supply ◽  
Coupling Effect ◽  
Sodium Chlorate ◽  
Decomposition Reaction ◽  
Oxygen Production ◽  
Mass Fractions ◽  
Oxygen Production Rate

In this study, to explore the influence of metals and oxides on the oxygen production rate and stability of sodium chlorate oxygen candles, 28 experimental samples were investigated. The effects of Co2O3, Co3O4, and Fe2O3 with different mass fractions on the thermal decomposition temperature and thermal decomposition rate of sodium chlorate were compared and analyzed. Co3O4 (5%) was obtained to reduce the thermal decomposition range to 260–450°C and reduce the pyrolysis interval ∆T to 46.2°C. Through the development of three metals (Fe, Mg, and Mn), under four mass fractions (2%, 4%, 6%, and 8%) mixed with Co3O4 (5%), the results of the effective oxygen production efficiency test for the thermal decomposition reaction of sodium chlorate demonstrated that Mn (6%)–Co3O4 (5%) exhibited the best catalytic and heat coupling effect; the effective oxygen production efficiency of 97.8% was achieved. Oxygen candle oxygen supply experiment was conducted; the oxygen candle composition for the test was determined to be NaClO3 (86%), Mn (6%), Co3O4 (5%), and kaolin (3%); in the four stages of the oxygen candle oxygen supply reaction test, the average oxygen supply rate reached 1.647 L/min, actual oxygen production was 28 L, and effective oxygen production rate of the oxygen candle was 53.6%. An increase of 9% was observed compared to the previous similar studies. The results of this study present a formula to optimize the oxygen supply of the oxygen candle, which is crucial for improving the oxygen supply performance of the oxygen candle.

Oxygen Production Rate as a Test for Determining Toxicity of Copper to Rhodomonas salina Hill and Wehterbee (Cryptophyceae)

1999 ◽  
Vol 62 (6) ◽  
pp. 776-782 ◽  
Author(s):  
I. Moreno Garrido ◽  
L. M. Lubián ◽  
A. M. V. M. Soares
Keyword(s):  
Production Rate ◽  
Oxygen Production ◽  
Rhodomonas Salina ◽  
Oxygen Production Rate

DEVELOPMENT AND APPLICATION OF OXYGEN PRODUCTION RATE ASSESSMENT TO UPTAKE OF FLUORINATED ORGANICS BY LEMNA MINOR

2006 ◽  
Vol 25 (11) ◽  
pp. 3039 ◽  
Author(s):  
Dawn Marie Reinhold ◽  
F. Michael Saunders
Keyword(s):  
Production Rate ◽  
Lemna Minor ◽  
Oxygen Production ◽  
Oxygen Production Rate

Enhanced spirulina growth in outdoor ponds correlates with daily reduction in oxygen production rate

1996 ◽  
Vol 15 (1) ◽  
pp. 9-12 ◽  
Author(s):  
V. S. Chauhan ◽  
V. Ramamurthy
Keyword(s):  
Production Rate ◽  
Oxygen Production ◽  
Oxygen Production Rate

Kinetic modeling of hydrogen production rate by photoautotrophic cyanobacterium A. variabilis ATCC 29413 as a function of both CO2 concentration and oxygen production rate

2016 ◽  
Vol 47 (2) ◽  
pp. 111-115
Author(s):  
Siti Fatihah Salleh ◽  
Azlina Kamaruddin ◽  
Mohamad Hekarl Uzir ◽  
Abdul Rahman Mohamed ◽  
Abdul Halim Shamsuddin
Keyword(s):  
Hydrogen Production ◽  
Production Rate ◽  
Kinetic Modeling ◽  
Co2 Concentration ◽  
Oxygen Production ◽  
Hydrogen Production Rate ◽  
Oxygen Production Rate

Comparison of oxygen and carbon dioxide balances in HRAP (high-rate algal ponds)

2003 ◽  
Vol 48 (2) ◽  
pp. 277-281 ◽  
Author(s):  
H. El Ouarghi ◽  
E. Praet ◽  
H. Jupsin ◽  
J.-L. Vasel
Keyword(s):  
Carbon Dioxide ◽  
Diurnal Variations ◽  
High Rate ◽  
Oxygen Balance ◽  
Oxygen Production ◽  
Tracer Gas ◽  
High Rate Algal Ponds ◽  
Hydrodynamic Study ◽  
Oxygen Production Rate ◽  
Photosynthesis And Respiration

We previously suggested a method to characterize the oxygen balance in High-Rate Algal Ponds (HRAPs). The method was based on a hydrodynamic study of the reactor combined with a tracer gas method to measure the oxygen transfer coefficient. From such a method diurnal variations of photosynthesis and respiration can be quantified and the net oxygen production rate determined. In this paper we propose a similar approach to obtain carbon dioxide balances in HRAPs. Then oxygen and carbon dioxide balances can be compared.

The Role of Gold Nanoparticles' Aspect Ratio in Plasmon-Enhanced Luminescence and Singlet Oxygen Generation Rate by Mo6 Clusters

2021 ◽  
Author(s):  
Evgeniya D. Novikova ◽  
Yuri A. Vorotnikov ◽  
Nazar A. Nikolaev ◽  
Alphiya R Tsygankova ◽  
Michael A. Shestopalov ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Aspect Ratio ◽  
Singlet Oxygen ◽  
Oxygen Production ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Oxygen Production Rate ◽  
Plasmon Enhanced Luminescence ◽  
Enhanced Luminescence

Here we present a study on the effect of the aspect ratio (AR) of gold nanoparticles on the emission intensity and singlet oxygen production rate of hexamolybdenum cluster-doped silica particles....

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