Automatic method for the determination of ortho-phosphate and total dissolved phosphorus in the marine environment

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

“…The automated procedures for nitrate and nitrite analyses were based on the methods of Armstrong et al (1967). Determination of phosphate followed the method of Murphy & Riley (1962) with modifications by Eberlein & Kattner (1987). Reactive silicate was measured as described in Grasshoff et al (1983).…”

Section: Methodsmentioning

confidence: 99%

Nutrient regimes in the marginal ice zone of the Greenland Sea in summer

Spies

¹

,

Brockmann²,

Kattner

³

1988

Mar. Ecol. Prog. Ser.

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

“…Luebbe) flow-through spectrophotometric apparatus using standard procedures (Jones 1984;Slawyck and McIsaac 1972): ammonium reacted with salicylate and dichloro-isocyanuric acid, using nitroprusside as a catalyst, to produce a blue compound measured at 660 nm; nitrite reacted under acidic conditions with sulfanilamide to form a diazo-compound that then couples with N-(1-naphtyl)-ethylenediamine to form a reddish-purple azo-dye that is measured at 550 nm; nitrate was determined after reduction into nitrite. Ortho-phosphate from filtered water samples was reacted with molybdate and ascorbic acid in the presence of antimony potassium tartrate to form a blue compound measured at 880 nm; total P was determined on unfiltered water after sodium persulfate digestion and mineralization at 110°C in an acidic phase (Eberlein and Katter 1984). Dissolved silica (DSi) was determined by spectrophotometry and analyzed from filtered water samples (Rodier 1984).…”

Section: Dissolved Elementsmentioning

confidence: 99%

N, P, Si budgets for the Red River Delta (northern Vietnam): how the delta affects river nutrient delivery to the sea

Luu

¹

,

Garnier

²

,

Billen

³

et al. 2010

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

Automatic method for the determination of ortho-phosphate and total dissolved phosphorus in the marine environment

Cited by 97 publications

References 7 publications

The impact of agricultural land use on stream chemistry and inputs to an inland reservoir: case of the Sauce Grande River, Argentina

The impact of agricultural land use on stream chemistry and inputs to an inland reservoir: case of the Sauce Grande River, Argentina

Nutrient regimes in the marginal ice zone of the Greenland Sea in summer

N, P, Si budgets for the Red River Delta (northern Vietnam): how the delta affects river nutrient delivery to the sea