Application of Derivative Spectroscopy to the Simultaneous Identification and Determination of Plasma Amitriptyline and Perphenazine Key Words: Derivative Spectroscopy, Amitriptyline, Perphenazine

1988 ◽  
Vol 21 (6) ◽  
pp. 1045-1054 ◽  
Author(s):  
P. Fernandez ◽  
A. M. Bermejo ◽  
M. Lopez-rivadulla
Keyword(s):  
Key Words ◽  
Derivative Spectroscopy ◽  
Simultaneous Identification

DETERMINATION OF AFTER-RIPENING PERIOD AND HORMONAL RESPONSE OF OROBANCHE SOLMSII C.D. CLARKE SEEDS

1970 ◽  
Vol 11 (1) ◽  
Author(s):  
A. Bista ◽  
G. B. Khattri ◽  
B. D. Acharya ◽  
S. C. Srivastava
Keyword(s):  
Growth Hormone ◽  
Seed Germination ◽  
Key Words ◽  
Incubation Period ◽  
Seed Set ◽  
Summer Season ◽  
Conditioning Period ◽  
Root Parasite ◽  
One Year

To find out the ability of Orobanche seeds to germinate immediately after seed set, seeds were germinated periodically at an interval of three months for one year in GR24. Some Orobanche seeds were capable of germination immediately after seed set but most required about nine months as after ripening or incubation period to be able to germinate. The phenomenon of after ripening in Orobanche seeds could be taken as an ecological measure to dormant over following unfavorable wet summer season. The growth hormone studies on Orobanche seed germination have shown that GA3 at a concentration of 100 ppm substantially enhanced seed germination when applied during pre-conditioning period. NAA showed some stimulatory effect at 0.5 - 1.0 ppm when applied during post-conditioning period but the hormone if applied during pre-conditioning period inhibited the germination. Kinetin failed to stimulate the germination at all the concentrations tested. Key words: Germination, root-parasite, hormone. Ecoprint Vol.11(1) 2004.

Development and Validation of Derivative Spectroscopic Method for Simultaneous Estimation of Cefadroxil and Probenecid

2014 ◽  
Vol 7 (1) ◽  
pp. 2350-2355
Author(s):  
Pratik S Mehta ◽  
Pratik R. Patel ◽  
Rajesh R Parmar ◽  
M M K Modasiya ◽  
Dushyant A Shah
Keyword(s):  
Spectroscopic Method ◽  
Spectral Interference ◽  
Synthetic Mixture ◽  
Simultaneous Estimation ◽  
Zero Crossing ◽  
First Order ◽  
Derivative Spectroscopy ◽  
Development And Validation ◽  
Crossing Point

A novel, simple, accurate, sensitive, precise and economical derivative spectroscopic method was developed and validated for the determination of cefadroxil and probenecid in synthetic mixture. First order derivative spectroscopy method was adopted to eliminate spectral interference. The method obeys Beer’s Law in concentration ranges of 4-36 μg/ml for cefadroxil and of 5-25 μg/ml of probenecid. The zero crossing point for cefadroxil and probenecid was 260 nm and 237.8 nm respectively in 0.1N HCl. The method was validated in terms of accuracy, precision, linearity, limits of detection, limits of quantitation. This method has been successively applied to synthetic mixture and no interference from the synthetic mixture’s excipients was found.   

A Rapid, Simultaneous Determination of Paraquat and Diquat in Serum and Urine Using Second-Derivative Spectroscopy

1992 ◽  
Vol 16 (4) ◽  
pp. 214-216 ◽  
Author(s):  
Chiaki Fuke ◽  
Kiyoshi Ameno ◽  
Setsuko Ameno ◽  
Takahiro Kirlu ◽  
Toyohiko Shinohara ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Second Derivative ◽  
Derivative Spectroscopy ◽  
Second Derivative Spectroscopy ◽  
Serum And Urine

DETERMINING AMMONIUM OXALATE-EXTRACTABLE Si IN SOILS

1986 ◽  
Vol 66 (4) ◽  
pp. 751-755 ◽  
Author(s):  
C. WANG ◽  
P. A. SCHUPPLI
Keyword(s):  
Atomic Absorption ◽  
Key Words ◽  
Podzolic Soil ◽  
Ammonium Oxalate ◽  
Podzolic Soils ◽  
Significant Difference ◽  
Key Words Oxalate

Determination of oxalate-extractable Si and Al is useful in assessing the degree of accumulation of allophane-like materials in Podzolic soils. Three procedures were tested for determining Si: manual spectrophotometry, automated spectrophotometry and atomic absorption. For concentrations of oxalate-extractable Si above 0.5 g kg−1, there was no significant difference among results by the three procedures. For lower concentrations of Si, results by atomic absorption were higher than those by the spectrophotometric procedures. Determination by Si by autoanalyzer is the preferred procedure as it is convenient, sensitive and reliable. Key words: Oxalate Si, Podzolic soil, autoanalyzer

Level of thyroid-stimulating hormone as basic diagnostic marker and criterion of treatment success of thyroid diseases

2017 ◽  
pp. 102-106
Author(s):  
V.I. Pankiv ◽  
Keyword(s):  
Key Words ◽  
Functional State ◽  
Diagnostic Marker ◽  
Treatment Success ◽  
Thyroid Stimulating Hormone ◽  
Thyroid Diseases ◽  
Early Diagnostics ◽  
Basic Test ◽  
Stimulating Hormone

In the article information is generalized on the aspects of early diagnostics of thyrois disorders. The value of thyroid-stimulating hormone is underlined as basic test for determination of the thyroid functional state and criterion of treatment success of thyroid diseases. Key words: thyroid, thyroid-stimulating hormone, diagnostics.

Determination of the correlation relationship between irrigation and distribution of agricultural lands

2021 ◽  
Vol 07 (02) ◽  
pp. 29-35
Author(s):  
Kamil Zakir oğlu İbrahimli ◽  
Keyword(s):  
Key Words ◽  
Statistical Method ◽  
Negative Correlation ◽  
Agricultural Lands ◽  
Correlation Relationship ◽  
Positive Correlation ◽  
Correlation Methods ◽  
Correlation Degree ◽  
The Relationship

The importance of the statistical method is great in the study of natural and economic processes. It is possible to conduct analyzes and obtain results with the help of this method. Sometimes phenomena and processes co-exist and develop interdependently. In this case, it is necessary to determine the relationship between them, to express this relationship. Key words: perfect positive correlation, perfect negative correlation, direction of correlation, degree of correlation, methods of calculating correlation, Spearman᾽s method

scholarly journals Simultaneous determination of gatifloxacin and prednisolone acetate in ophthalmic formulation using first-order UV derivative spectroscopy

2017 ◽  
Vol 10 (5) ◽  
pp. 604-610 ◽  
Author(s):  
Rúbia A. Sversut ◽  
Isabella C. Alcântara ◽  
Aline M. Rosa ◽  
Adriano C.M. Baroni ◽  
Patrik O. Rodrigues ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Prednisolone Acetate ◽  
First Order ◽  
Derivative Spectroscopy ◽  
Ophthalmic Formulation

Simultaneous Sequential Determination of Compounds of Toxicological Interest in Mixtures by Derivative Spectroscopy

1992 ◽  
Vol 16 (4) ◽  
pp. 240-243 ◽  
Author(s):  
A. Cruz ◽  
M. Lopez-Rivadulla ◽  
P. Fernandez ◽  
A.M. Bermejo
Keyword(s):  
Sequential Determination ◽  
Derivative Spectroscopy

An evaluation of five methods for the determination of moisture in grass seeds

2002 ◽  
Vol 82 (2) ◽  
pp. 401-405
Author(s):  
N. A. Fairey
Keyword(s):  
Key Words ◽  
Rapid Determination ◽  
Performance Characteristics ◽  
Grass Species ◽  
Moisture Determination ◽  
Fresh Weight ◽  
Seed Moisture ◽  
Seed Crops ◽  
Time Of Harvest

Seed of four grass species was re-hydrated to 11 pre-determined moisture concentrations ranging from 100 to 600 g kg-1 fresh weight ( FW) to simulate seed maturation during swathing and combining. The performance characteristics of three thermogravimetric and two electronic capacitance methods of moisture determination were evaluated. The thermogravimetric methods had no moisture range limitations and were, in general, more accurate than the electronic methods. The thermogravimetric Koster tester is suitable for grass seeds of all moisture concentrations, and can be easily adapted for use at field sites. The John Deere Moisture- Chek electronic tester is suitable for the rapid determination of moisture in grass seeds but is limited to concentrations of 80–250 g kg-1 FW. Key words: Grass seed crops, seed moisture measurement, swathing, combining, time of harvest

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