Nitrogen flow through a Brachionus /Chlorella mass culture system

1989 ◽  
pp. 401-408 ◽  
Author(s):  
Warren D. Nagata
Keyword(s):  
Mass Culture ◽  
Culture System ◽  
Nitrogen Flow ◽  
Flow Through

Nitrogen flow through a Brachionus/Chlorella mass culture system

Hydrobiologia ◽  
1989 ◽  
Vol 186-187 (1) ◽  
pp. 401-408 ◽  
Author(s):  
Warren D. Nagata
Keyword(s):  
Mass Culture ◽  
Culture System ◽  
Nitrogen Flow ◽  
Flow Through

scholarly journals Development of Botryococcus Seed Culture System for Future Mass Culture

2012 ◽  
Vol 15 ◽  
pp. 80-89 ◽  
Author(s):  
Ryoji Shimamura ◽  
Sho Watanabe ◽  
Yoshio Sakakura ◽  
Makoto Shiho ◽  
Kunimitsu Kaya ◽  
...  
Keyword(s):  
Mass Culture ◽  
Culture System ◽  
Seed Culture

THE EFFECTS OF CRUDE OIL ON LARVAE OF LOBSTER HOMARUS AMERICANUS

1977 ◽  
Vol 1977 (1) ◽  
pp. 569-573
Author(s):  
Joseph M. Forns
Keyword(s):  
Crude Oil ◽  
Mass Culture ◽  
Homarus Americanus ◽  
Behavioral Characteristics ◽  
American Lobster ◽  
Larval Stages ◽  
Fourth Larval Stage ◽  
Flow Through ◽  
Oil Exposure ◽  
South Louisiana

ABSTRACT The effects of API reference South Louisiana crude oil upon four larval stages of American lobster (Homarus americanus) were determined in a flow-through system. Tests were conducted with naturally-hatched animals in individual test chambers as well as in mass culture systems in an operating state lobster hatchery. Experimental flow-through crude oil exposure concentrations were 0.1, and 1.0 ppm, administered as a strongly-agitated emulsion-like mix to ambient temperature seawater ranging from 15°-20°C. Oil exposure residence times ranged from 0.8-5.6 minutes depending on the test. Exposed animals were monitored six times daily for feeding behavioral characteristics, mobility, molting success, growth and development times to reach the fourth larval stage. Pigmentation analysis was performed on individual larvae by photomicroscopy, and hydrocarbon analyses were also conducted thereon. Post-larval development through the eighth stage was investigated. Statistical comparisons were made among different control animals and between control and oil-exposed larvae.

Recent development of a high density mass culture system for the rotifer Brachionus rotundiformis Tschugunoff

1997 ◽  
pp. 139-144
Author(s):  
Kenji Yoshimura ◽  
Koji Usuki ◽  
Takao Yoshimatsu ◽  
Chikara Kitajima ◽  
Atsushi Hagiwara
Keyword(s):  
Mass Culture ◽  
Culture System ◽  
High Density ◽  
Brachionus Rotundiformis

NITROGEN FLOW THROUGH THE FOOD WEB IN THE OLIGOHALINE ZONE OF A NEW ENGLAND ESTUARY

Ecology ◽  
2000 ◽  
Vol 81 (2) ◽  
pp. 433-452 ◽  
Author(s):  
Jeffrey E. Hughes ◽  
Linda A. Deegan ◽  
Bruce J. Peterson ◽  
Robert M. Holmes ◽  
Brian Fry
Keyword(s):  
New England ◽  
Food Web ◽  
Nitrogen Flow ◽  
Flow Through

scholarly journals Enhanced Activity of Titanocene Complex for Electrocatalytic Nitrogen Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 389
Author(s):  
Karol J. Fijalkowski
Keyword(s):  
Catalytic Activity ◽  
Reduction Reaction ◽  
Potential Range ◽  
Carbon Electrode ◽  
Nitrogen Flow ◽  
Permeable Membrane ◽  
Nitrogen Reduction ◽  
Working Solution ◽  
Flow Through ◽  
High Level

Enhanced titanocene (Cp2TiCl2) based electrocatalytic system for nitrogen reduction was shown, comprising glassy carbon electrode, high level of the catechol redox mediator, optimized binary THF/MeOH solvent and unique design of the reactor having ammonia permeable membrane at the outlet, which allowed constant nitrogen flow through the working solution during entire electrolysis without risk of evaporation of the solvent. Catalytic activity was observed in the potential range of (–1.5)–(–2.3) V, reaching TON of 2.83%, corresponding to the production of 0.566 μmol NH3 (9.64 μg) in 24 h hydrolysis at–2.3 V using 0.02 mmol TiCp2Cl2 (5 mg).

Digestion of mature pangola grass (Digitaria decumbens) by Bos taurus and Bos indicus cattle

1986 ◽  
Vol 37 (6) ◽  
pp. 665 ◽  
Author(s):  
RA Hunter ◽  
BD Siebert
Keyword(s):  
Cell Wall ◽  
Crude Protein ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Nitrogen Flow ◽  
Tropical Grasses ◽  
Protein Requirements ◽  
Digitaria Decumbens ◽  
Significant Difference ◽  
Flow Through

The digestion of mature pangola grass (Digitaria decurnbens) by Hereford (Bos taurus) and Brahman (Bos indicus) steers was studied. There was no significant difference between breeds in the digestion of organic matter (OM) and cell wall constituents (CWC). The OM digestibility in the whole tract was 0.59 with 90% of the digestion occurring in the stomachs. There was a significantly (P < 0.05) greater nonammonia nitrogen flow through the abomasum in Herefords (66 g/day) than Brahmans (59 g/day). Likewise the ratio of crude protein digested in the intestines to digestible OM (DCPi:DOMI) was higher (P < 0.05) in Herefords (0.120) than in Brahmans (0.102). In both breeds 66% of the nitrogen associated with the CWC was digested in the whole tract, essentially all digestion occurring in the stomachs. These results for pangola grass, especially the DCPi:DOMI ratios, are compared with the digestion characteristics of other tropical grasses and are discussed in terms of the capacity of tropical grasses to meet the protein requirements of growing cattle.

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