Relevant bibliographies by topics / First Derivative Zero Crossing Point Method

Contents

  1. Journal articles
  2. Book chapters
  3. Conference papers

Academic literature on the topic 'First Derivative Zero Crossing Point Method'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'First Derivative Zero Crossing Point Method.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "First Derivative Zero Crossing Point Method"

1

Taulier, A., P. Levillain, and A. Lemonnier. "Determining methemoglobin in blood by zero-crossing-point first-derivative spectrophotometry." Clinical Chemistry 33, no. 10 (1987): 1767–70. http://dx.doi.org/10.1093/clinchem/33.10.1767.

Full text
Abstract:
Abstract We determined methemoglobin in blood by zero-crossing-point first-derivative spectrophotometry. After lysis of erythrocytes, hemoglobin was converted into oxyhemoglobin and the first derivative spectrum was recorded between 405 and 425 nm. At the exact point where the first-derivative spectrum of oxyhemoglobin was zero ("zero-crossing point"), the first-derivative value of oxyhemoglobin and methemoglobin mixture was proportional to the methemoglobin concentration. The standard curve was linear for all proportions of methemoglobin. Within-assay precision (CV) was 3.4% for a 20% methemo
APA, Harvard, Vancouver, ISO, and other styles
2

Dudhrejiya, Ashvin, Ashok Patel, Jayant Chavda, Dhruvanshi Gol, and Priyal Koli. "Spectrophotometric simultaneous determination of efonidipine hydrochloride ethanolate and telmisartan in synthetic mixture by first order derivative method." Journal of medical pharmaceutical and allied sciences 11, no. 2 (2022): 4547–51. http://dx.doi.org/10.55522/jmpas.v11i2.2427.

Full text
Abstract:
The established method represents the development and validation of a straight forward, precise, accurate, specific and reproducible method for the simultaneous estimation of Efonidipine Hydrochloride Ethanolate and Telmisartan in synthetic mixture. First order derivative of the overlay spectra was used for quantification of both drugs. This method involving the determination of both drugs at their respective zero crossing point working wavelength was observed 231.00 nm (Zero crossing point of Telmisartan) for Efonidipine hydrochloride ethanolate and 238.60 nm (Zero crossing point of Efonidipi
APA, Harvard, Vancouver, ISO, and other styles
3

Parmar, Kaminee, Sunil Baldania, Dimal Shah, Usmangani Chhalotiya, and Naimin Parmar. "Development and Validation of First-Order Derivative Spectrophotometry for Simultaneous Determination of Levocetirizine Dihydrochloride and Phenylephrine Hydrochloride in Pharmaceutical Dosage Form." International Journal of Spectroscopy 2013 (July 18, 2013): 1–6. http://dx.doi.org/10.1155/2013/502310.

Full text
Abstract:
A simple, precise, accurate, and economical spectrophotometric method has been developed for simultaneous estimation of levocetirizine dihydrochloride (LCT) and phenylephrine hydrochloride (PHE) by employing first-order derivative spectrophotometric method. The first-order derivative absorption at 240 nm (zero crossing point of PHE) was used for quantification of LCT and 283.2 nm (zero crossing point of LCT) for quantification of PHE. The linearity was established over the concentration range of 4–24 μg/mL and 8–48 μg/mL for LCT and PHE with correlation coefficients (r2) 0.9964 and 0.9972, res
APA, Harvard, Vancouver, ISO, and other styles
4

Neeli, Sirisha, Haripriya Anuganti, Sathesh Babu R. Puvvadi, and Chavali VS Subrahmanyam. "First Derivative Synchronous Spectrofluorimetric Quantification of Telmisartan/Amlodipine Besylate Combination in Tablets." Dhaka University Journal of Pharmaceutical Sciences 12, no. 1 (2013): 35–40. http://dx.doi.org/10.3329/dujps.v12i1.16298.

Full text
Abstract:
A first derivative synchronous spectrofluorimetric method has been developed and validated for simultaneous determination of telmisartan (TEL) and amlodipine besylate (AML) in combined tablet dosage form without any prior separation of components from the sample. TEL was determined at emission wavelength of 675 nm (zero-crossing wavelength point of AML). Similarly, AML was measured at 458 nm (zero-crossing wavelength point of TEL). The first derivative amplitude- concentration plots were rectilinear over the range of 4-14 ?g/ml for TEL and 1-6 ?g/ml for AML. The method was validated statistica
APA, Harvard, Vancouver, ISO, and other styles
5

Cielecka-Piontek, Judyta, Aran Lunzer, and Anna Jelińska. "Stability-indicating derivative spectrophotometry method for the determination of biapenem in the presence of its degradation products." Open Chemistry 9, no. 1 (2011): 35–40. http://dx.doi.org/10.2478/s11532-010-0125-9.

Full text
Abstract:
AbstractA first-derivative UV spectrophotometric method, with or without the subtraction technique, was developed for the determination of biapenem in pharmaceutical dosage form in the presence of its degradation products. The method was based on the measurement of first-derivative amplitudes at zero crossing point (λ = 312 nm) and the peak-to-zero technique and validated with regard to linearity, limits of detection and quantitation, selectivity and precision. The observed rate constants for the degradation of biapenem were comparable to those obtained in the stability-indicating HPLC method.
APA, Harvard, Vancouver, ISO, and other styles
6

M. Patel, Shivani, and Lalit L. Jha. "SIMULTANEOUS UV METHOD DEVELOPMENT FOR DETERMINATION OF ROTIGOTINE HYDROCHLORIDE AND RASAGILINE MESYLATE." Indian Drugs 60, no. 05 (2023): 73–79. http://dx.doi.org/10.53879/id.60.05.13373.

Full text
Abstract:
A precise, accurate analytical UV spectroscopic method has been developed for simultaneous estimation of rotigotine hydrochloride and rasagiline mesylate by using first order derivative spectroscopy. 50 µg mL-1 solutions of both drugs were scanned in the range of 200-800 nm and the first order overlain spectra of both drugs to check zero crossing points. Rotigotine hydrochloride showed zero crossing point at 239 nm where and rasagiline mesylate showed at 273 nm. Six-point calibration curves shown linearity in 2-12 µg mL-1 concentration range for rotigotine hydrochloride and 10-60 µg mL-1 conce
APA, Harvard, Vancouver, ISO, and other styles
7

Wani, Rakesh M., Arun M. Kashid, Amita Ghatge, and Sumita Sahoo. "SIMULTANEOUS ESTIMATION OF ASPIRIN AND OMEPRAZOLE IN LABORATORY SAMPLE BY DIFFERENT UV SPECTROPHOTOMETRIC TECHNIQUES." INDIAN DRUGS 57, no. 09 (2020): 75–81. http://dx.doi.org/10.53879/id.57.09.11417.

Full text
Abstract:
The aim of the present work was to develop simple, precise and economic UV- spectrophotometric methods for the simultaneous estimation of aspirin and omeprazole in a laboratory sample. The absorbance maxima (λmax) for detection of aspirin and omeprazole were selected as 274 nm and 302 nm, respectively, for simultaneous equation method while wavelength range for detection of aspirin and omeprazole were selected as 270 nm - 276 nm and 300 nm - 305 nm, respectively for area under curve method. Absorbance ratio method uses the ratio of absorbances at two selected wavelengths, one which is an isoab
APA, Harvard, Vancouver, ISO, and other styles
8

Patil, T. N., S. D. Firke, S. B. Bari, N. S. Joshi, and P. S. Bafna. "SIMULTANEOUS ESTIMATION OF EBASTINE AND MONTELUKAST SODIUM IN TABLET DOSAGE FORM BY UV-SPECTROPHOTOMETRY AND FIRST ORDER DERIVATIVE." INDIAN DRUGS 50, no. 10 (2013): 47–52. http://dx.doi.org/10.53879/id.50.10.p0047.

Full text
Abstract:
A simple, precise, accurate and reproducible spectrophotometric method has been developed for simultaneous estimation of ebastine and montelukast sodium by employing first order derivative zero crossing method in methanol and water. The first order derivative absorption at 234 nm (zero cross point of ebastine) was used for quantification of montelukast sodium and 281.60 nm (zero cross point of montelukast sodium) for quantification of ebastine. The linearity was established over the concentration range of 5-25 μg/mL for both ebastine and montelukast sodium with correlation coefficient r2 0.997
APA, Harvard, Vancouver, ISO, and other styles
9

Gómez, Iban, Ester Viteri, Jessica Montero, Mile Djurdjevic, and Gerhard Huber. "The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys." Applied Sciences 8, no. 8 (2018): 1236. http://dx.doi.org/10.3390/app8081236.

Full text
Abstract:
The aim of this work is to give an overview of existing methods and to introduce three new methods for the determination of the Dendrite Coherency Point (DCP) for AlSi10Mg alloys, as well as to compare the acquired values of DCP based on a thermal analysis and on the analysis of cooling curves working with only one thermocouple. Additionally, the impact of alloying and contaminant elements on the DCP will be also studied. The first two proposed methods employ the higher order derivatives of the cooling curves. The DCP was determined as the crossing point of the second and third derivative curv
APA, Harvard, Vancouver, ISO, and other styles
10

Prajapati, Krishna V., Hasumati A. Raj, Vineet C. Jain, and Neelam S. Prajapati. "FIRST DERIVATIVE SPECTROSCOPIC METHOD FOR SIMULTANEOUS ESTIMATION OF MESALAZINE AND RIFAXIMIN IN SYNTHETIC MIXTURE." Pharmaceutical and Biological Evaluations 3, no. 2 (2016): 231–40. https://doi.org/10.5281/zenodo.51068.

Full text
Abstract:
Objective: The present study was aimed to describe a simple, sensitive, rapid, accurate, precise and economical first derivative spectrophotometric method for the simultaneous determination of Mesalazine (MESA) and Rifaximin (RIFA) in synthetic mixture. Methods: The derivative spectrophotometric method was based on the determination of both the drugs at their respective zero crossing point (ZCP). The first order derivative spectra were obtained in 0.01 N NaOH and the determinations were made at 329.20 nm (ZCP of RIFA) for MESA and 292.80 nm (ZCP of MESA) for RIFA. The linearity was obtained in
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "First Derivative Zero Crossing Point Method"

1

Jen Chun-Chu, Yu Shyr-Shen, and Chan Yung-Kuan. "A Concise Method for Locating the Nipple Position on Mammogram Images." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-522-7-103.

Full text
Abstract:
In this paper, a concise method is proposed to locate the nipple position on a mammogram image. Mammogram registration is an important preprocessing technique, which can help in finding asymmetrical regions in left or the corresponding right breast. In particular, correct nipple position is the crucial key point of mammogram registration since it is still the most consistent and stable landmark on a mammogram. This work first presents an algorithm of maximum height of the breast border (MHBB) and then proposes two novel approaches, local spatial-maximum mean intensity (MMI) and local maximum z
APA, Harvard, Vancouver, ISO, and other styles
2

Severson, M. W., and V. Buch. "Quantum Monte Carlo simulation of intermolecular excited vibrational states in the cage water hexamer." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00121.

Full text
Abstract:
Abstract The general problem discussed in this paper is that of predicting vibrational excitation in large hydrogen-bonded clusters, and, as the authors point out, “It should be realized that the problem is very difficult.” In this case, the cluster is the cage form of the water hexamer, simplified somewhat by use of rigid-body water molecules. The key to the solution is a new procedure for locating the nodes in the wavefunctions for the excited vibrational states. The method begins with an approximately correct candidate nodal surface, obtained as a zero for a normal coordinate in the harmoni
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "First Derivative Zero Crossing Point Method"

1

Ting, Kwun-Lon, and Xiaohong Dou. "Change-Point Configurations of RSSR and Other Bimodal Linkages." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0194.

Full text
Abstract:
Abstract In this article, an analytical method is developed for finding change-point positions of RSSR and other bimodal linkages. At a change-point position, the input or output discriminant function and its derivative with respect to the input angle are equal to zero. The method is demonstrated in studying the effect of the skew distance between the joint axes to the existence of change-positions and offering the first successful systematic search of general RSSR change-point linkages. Like planar four-bar linkages, the issue of change-point linkages is pivotal to the understanding of the mo
APA, Harvard, Vancouver, ISO, and other styles
2

Vaze, Shilpa A., Prakash Krishnaswami, and James DeVault. "Metamodeling of Mechatronic Systems in the MIXEDMODELS Platform." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35521.

Full text
Abstract:
The parametric design of mechatronic systems requires several detailed analyses of the system, thereby slowing down the design process significantly. In the recent past, there has been a lot of interest in using lower fidelity, but higher efficiency metamodels (also called surrogate models) instead of the actual detailed models to guide parametric design, particularly in the early stages of parametric design. One common approach to forming metamodels is to run the detailed model to obtain the system response at selected points in design space and fit a response surface to the results which bec
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'First Derivative Zero Crossing Point Method' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography