scholarly journals Titrating excess nitrogen content of phosphorous-deficient eastern Mediterranean surface water using alkaline phosphatase activity as a bio-indicator

2005 ◽  
Vol 3 (2) ◽  
pp. 94-100 ◽  
Author(s):  
T. Frede Thingstad ◽  
R. Fauzi C. Mantoura
Keyword(s):  
Alkaline Phosphatase ◽  
Surface Water ◽  
Nitrogen Content ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Eastern Mediterranean ◽  
Excess Nitrogen

Interpretations of Alkaline Phosphatase Activity in Lake Ontario

1987 ◽  
Vol 44 (12) ◽  
pp. 2087-2094 ◽  
Author(s):  
F. R. Pick
Keyword(s):  
Alkaline Phosphatase ◽  
Surface Water ◽  
Water Column ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Lake Ontario ◽  
Sensitive Indicator ◽  
P Deficiency ◽  
Nearshore Water ◽  
Ambient Concentrations

Alkaline phosphatase activity (APA) in Lake Ontario reached maximum levels of 0.25 μMP released∙h−1 during 1982. Relatively high values were first detected in nearshore surface water in May concurrent with thermal bar development and at a later date (end of June) at a midlake station following transport of nearshore water to the middle. APA remained detectable throughout the summer but declined in mid-August as a result of upwelling events. With fall mixing, APA persisted throughout the entire water column. Additions of phosphate did not inhibit APA until enrichments were much greater than maximum ambient concentrations of soluble reactive P. The findings suggest that APA is not a sensitive indicator of P deficiency. APA activity was correlated with nanoplankton (2–20 μm) plus picopiankton (0.2–2 μm) biomass but not with total algal biornass. APA associated with particles greater than 12 μm was relatively unimportant.

LEUCOCYTE METABOLISM IN PREGNANCY

1960 ◽  
Vol XXXV (IV) ◽  
pp. 575-584 ◽  
Author(s):  
C. Borel ◽  
J. Frei ◽  
A. Vannotti
Keyword(s):  
Alkaline Phosphatase ◽  
Oxygen Consumption ◽  
Pregnant Women ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Lactate Production ◽  
Glucose Consumption ◽  
In Pregnancy

ABSTRACT Enzymatic studies, on leucocytes of pregnant women, show an increase of the alkaline phosphatase activity and a decrease of the glucose consumption and lactate production, as well as of proteolysis. The oxygen consumption, with succinate as substrate, does not vary.

Alkaline phosphatase activity and the development of rat sponge-induced granulation tissue

1972 ◽  
Vol 83 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Mário Roberto Vizioli ◽  
Lourenço Bozzo ◽  
Luiz Valdrighi
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Granulation Tissue
Sign in / Sign up

Export Citation Format

Share Document