Ratio-spectra first derivative
Journal of Applied Pharmaceutical Science
... In ratio spectra first derivative method, linearity range was found to be 2-32 µg/mL and 3-30 µg/mL for Levo and Mont ...the first derivative ( 1 DD) suitable wavelength was ...
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Simultaneous determination of moxifloxacin and cefixime by first and ratio first derivative ultraviolet spectrophotometry
... 101 ± 2.45, 100.89 ±1.48 99.81 ± 2.68 and 100.67 ± 0.73 at 222.1, 248.2, 379.0 nm and 287.0 nm respectively. Further, the first derivative spectra of MOX showed two zero crossing wavelengths (317.9 ...
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Journal of Applied Pharmaceutical Science
... absorbance ratio and first derivative (zero crossing) spectroscopic methods were developed and validated for simultaneous estimation of teneligliptin hydrobromide hydrate and metformin hydrochloride ...
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Simultaneous Quantitation of Theophylline and Guaifenesin in Syrup by HPLC, Derivative and Derivative Ratio Spectrophotometry for Quality Control Purposes
... main spectra are described for the determination of THP and GU in combined pharmaceutical syrup ...The first deriva- tive method can be applied only for THP and depends on the use of the second-order ...
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DEVELOPMENT AND VALIDATION OF RATIO SPECTRA DERIVATIVE METHOD FOR THE SIMULTANEOUS ESTIMATION OF BETAHISTINE DIHYDROCHLORIDE AND PROCHLORPERAZINE MALEATE IN TABLET DOSAGE FORM.
... absorption spectra of BET prepared at increasing concentrations in ...their ratio spectra were obtained as seen in the Figure ...the first derivatives of ratio-spectra were ...
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DERIVATIVE RATIO, ISOSBESTIC POINT, FACTORIZED ABSORPTIVITY AND BIVARIATE SPECTROPHOTOMETRIC DETERMINATION OF ATENOLOL AND CHLORTHALIDONE
... the derivative ratio spectra are the concentration of the standardsolution used as a divisor and the wavelength intervals over which the derivative is obtained (Δ ...obtained ratio ...
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Simultaneous Determination of Moexipril Hydrochloride and Hydrochlorothiazide by RP HPLC and Ratio Spectra Derivative Spectrophotometric Methods in Pure, Pharmaceutical Dosage Forms and Biological Fluids
... absorption spectra of standard solutions of MOE drug with different concentrations ...The spectra obtained were divided several times by the spectrum of working standard solution of HCT each time with ...
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Journal of Applied Pharmaceutical Science
... absorbance ratio and first derivative (zero crossing) spectroscopic methods were developed and validated for simultaneous determination of aliskiren hemifumarate and hydrochlorothiazide in tablet ...
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Journal of Applied Pharmaceutical Science
... In this method, careful choice of the divisor is of great importance (Nevado, 1992; Gracia, 1995), so different concentrations of the acid and alkaline degradation products were tried as a constant divisor, the best one ...
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Simultaneous estimation of montelukast sodium and desloratadine by ratio spectra derivative spectrophotometry method in combined dosage forms
... absorption spectra of MTKT prepared at increasing concentrations in Methanol were recorded in the spectral region of ...their ratio spectra were obtained as seen in the Fig-4a. Then, the first ...
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Simultaneous spectrophotometric estimation of imipramine hydrochloride and chlordiazepoxide in tablets
... Q-absorbance ratio method, two wavelengths of 220 nm (isoabsorptive point) and ...overlain spectra of IMI and CLR showing isoabsorptive .... First derivative spectrophotometric method is used ...
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Comparative Study of RP-HPLC and UV Spectrophotometric Techniques for the Simultaneous Determination of Amoxicillin and Cloxacillin in Capsules
... absorbance ratio and compensation, and ratio spectra first-order derivative could be successfully used for the co-assay of amoxicillin and ...
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... smart first derivative of ratio spectra, mean centering of ratio spectra and successive-ratio derivative spectra methods are developed for the determination ...
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Determination of physical and chemical properties and degradation of archeological Japanese cypress wood from the Tohyamago area using near-infrared spectroscopy
... second derivative spectra of archeological wood samples, we could estimate that NNTY59a had been dominantly degraded by brown-rot fungi, with relatively minor degradation due to aging, result- ing in the ...
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Fourier Transform Infrared Spectroscopy for Rapid Identification of Nonfermenting Gram Negative Bacteria Isolated from Sputum Samples from Cystic Fibrosis Patients
... The accurate and rapid identification of bacteria isolated from the respiratory tract of patients with cystic fibrosis (CF) is critical in epidemiological studies, during intrahospital outbreaks, for patient treatment, ...
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Simultaneous Derivative Spectrophotometric Estimation of Aceclofenac and Tramadol with Paracetamol in Combination Solid Dosage Forms
... The height of peaks at 279.4 and 289.4 nm, the zero crossing wavelengths of paracetamol, was denoted as h2 (Þ g. 2), and the height of peaks at 259.7 and 295.8 nm, the zero crossing wavelengths of aceclofenac, was ...
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UV Spectrophotometric estimation of Diacerein in pharmaceutical formulation
... Three simple, precise and economical UV methods have been developed for the estimation of Diacerein in Pharmaceutical Formulations. Diacerein has the maximum absorbance at 256.2 nm in zero order spectra formed the ...
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Rapid in vivo lipid/carbohydrate quantification of single microalgal cell by Raman spectral imaging to reveal salinity-induced starch-to-lipid shift
... images first went through cosmic ray removal, baseline subtraction, singular value decomposition (SVD) denoising, and polynomial fluores- cent background subtraction before the spectral content were ...we ...
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Modified Bayesian Beamformer for Binning Error Elimination
... The first, third order derivative constraints, conventional Bayesian and the proposed algorithm have been ...The first scenario has three bins with centers [−6, 0, 6], the second has five bins with ...
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lnc-EPB41-Protein Interactions Associated with Congenital Pouch Colon
... Figure 2. MST analysis plots: (a and b) for performing experiments, protein was NHS labelled and its concentration kept constant, while the concentration of the non-labeled affected RNA was varied. The assay was ...
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