Search results for "otas"
showing 10 items of 1136 documents
Gavot, Alca común (VER0000114)
Altres noms vulgars: Razorbill (Anglès), Petit Pingouin (Francès), Tordalk (Alemany) Gabinet de Vertebrats (Departament de Zoologia), Facultat de Ciències Biològiques (Campus de Burjassot), C/ Doctor Moliner, s/n, Bloque B. 5é plant, Burjassot (Valencia). Armari: 12-1
Gavot, Alca común (VER0000235)
Razorbill (Anglès), Petit Pingouin (Francès), Tordalk (Alemany) Gabinet de Vertebrats (Departament de Zoologia), Facultat de Ciències Biològiques (Campus de Burjassot), C/ Doctor Moliner, s/n, Bloque B. 5é plant, Burjassot (Valencia). Armari: 11-1 Puerto
Gavot, Alca común (VER0000115)
1967
Altres noms vulgars: Razorbill (Anglès), Petit Pingouin (Francès), Tordalk (Alemany) Gabinet de Vertebrats (Departament de Zoologia), Facultat de Ciències Biològiques (Campus de Burjassot), C/ Doctor Moliner, s/n, Bloque B. 5é plant, Burjassot (Valencia). Armari: 12-1 Juvenil Invierno torda _
Textes à l'appui entre 1989 et 1991
1988
Determination of nitrite by inhibition of the chemiluminescence of acriflavine in a flow-injection assembly
2001
The indirect determination of nitrite was performed with a flow-injection assembly on the basis of the inhibition of the analytical output obtained in a luminometer by oxidation of acriflavine. The acriflavine solution merged with the nitrite and the resulting mixture was injected into a pure water stream. This solution merged with the oxidant solution (potassium permanganate in sulfuric acid medium) and the resulting chemiluminiscence was affected (inhibited) by the presence of nitrite after reaction with the aminoacridine. The method was applicable over the range 10–800 μg l−1 of nitrite with a correlation coefficient of 0.9960. The relative standard deviation was 1.4% and the throughput …
A Quantitative Estimate of Ascorbic and Isoascorbic Acid by High Performance Liquid Chromatography: Application to Citric Juices
1993
Abstract The present report deals with the optimization and verification of a simple HPLC isocratic method useful for determining ascorbic and isoascorbic acids in standard solutions and fruit juices. Sample preparation is minimal and docs not require derivatization. The method uses an octadecyl reversed phase, a mobile phase which contains cetyltrimethyl ammonium bromide 0.05M as the ionic pair and potassium dihydrogen phosphate as a buffer, at pH=4.5, and 4-hydro-xyacetanilide as internal standard. The proposed method makes it possible to quantify ascorbic and isoascorbic acid in less than 13 minutes, with precision (C. V. 3.5%) and accuracy (recover' of 98%).
Effectiveness the source of nitrogen from NO3 and NH4 for Panicum maximum Jacq. growth in saline soil
2019
Abstract The purpose of this study was to determine the source of nitrogen used by Panicum maximum Jacq. plants in salt soil. Experimenting pots in a greenhouse with a medium of saline soil. The 2 × 3 factorial design is used in repeated trials. The first factor is calcium sulfate (0 and 2 t ha−1), the second factor is N fertilizer includes (a) without nitrogen = N0, (b) 60 kg N of potassium nitrate (KNO3) and (c) 60 kg N of ammonium sulfate (NH4SO4). The parameters observed were nitrogen uptake, constant growth rate (CGR), biomass yield, crude protein content, NDF, and ADF. The interaction of calcium sulfate and nitrate fertilizer increases CGR, biomass yield, N, CP and NDF uptake. Interac…
ZS "Avotiņi" saimnieciskās darbības analīze un nākotnes attīstības perspektīvas
2016
Maģistra darbā ir veikta ZS “Avotiņi” saimnieciskā darba analīze, izmantojot sekojošas analīzes metodes: •pārskata lasīšana; •horizontālā analīze; •vertikālā analīze; •finanšu koeficientu aprēķināšana. Finanšu pārskatu lietotāji, veicot finanšu analīzi, var iegūt informāciju par uzņēmuma saimniecisko vai finanšu stāvokli. Tas ļauj pieņemt lēmumus par līdzekļu investēšanu, tādejādi jebkurš lēmums var būtiski ietekmēt tālāku saimniecisko un finansiālo darbību. Darba teorētiskajā daļā autore maģistra darbā apraksta finansiālā stāvokļa mērķus un metodes, raksturo informācijas avotus un lietotājus. Lai novērtētu uzņēmuma saistību racionālu izmantošanu, darba praktiskajā daļā tiek novērtēta bilan…
Flow-injection spectrofluorimetric determination of paracetamol
1990
Abstract A flow-injection spectrofluorimetric determination of paracetamol is reported, based on the oxidation of the analyte with potassium hexacyanoferrate(III) immobilized on an anion-exchange resin, the fluorescence being enhanced with N,N′-dimethylformamide. Concentrations of paracetamol in the range 0.04–17.60 mg l−1 are determined with a relative standard deviation of 1.5%. The injection rate is 25 samples h−1. The influence of foreign species and the determination of paracetamol in several pharamaceutical formulations are also reported.
Determination of tannic acid by direct chemiluminescence in a FIA assembly
2002
The determination of tannic acid is performed in a FIA assembly on the basis of the analytical output obtained by oxidation of the acid. The analyte solution was daily prepared in a mixture of quinine as sensitiser and perchloric acid and it was injected into a pure water stream acting as a carrier. This solution merges with the mixture potassium permanganate in perchloric medium and the resulting chemiluminescence is monitored. The method was applied over the range 0.5-20 mg l(-1) of tannic acid with a LOD 100 mug l(-1). The reproducibility was 2.1% and the sample throughput 54 h(-1). The influence of foreign substances was studied and the new method is applied to the determination of tann…