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Journal articles on the topic 'Linearity and Precision'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Kroll, M. H., and K. Emancipator. "A theoretical evaluation of linearity." Clinical Chemistry 39, no. 3 (1993): 405–13. http://dx.doi.org/10.1093/clinchem/39.3.405.

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Abstract The measure of linearity is an important part of the evaluation of a method. According to the NCCLS guidelines (Document EP6-P), results of a linearity experiment are fit to a straight line and judged linear either by visual evaluation, which is subjective, or by the lack-of-fit test. This approach depends on the precision of the method, is not necessarily conclusive, and fails to be quantitative. We define linearity as a measure of how well a first-order (linear) polynomial fits the data compared with a higher-order (nonlinear) polynomial. The major property of a linear polynomial is

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2

Tartari, Gabriele A., Aldo Marchetto, and Rosario Mosello. "Precision and linearity of inorganic analyses by ion chromatography." Journal of Chromatography A 706, no. 1-2 (1995): 21–29. http://dx.doi.org/10.1016/0021-9673(94)01222-z.

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3

Zwinkels, Joanne C., and D. S. Gignac. "Automated high precision variable aperture for spectrophotometer linearity testing." Applied Optics 30, no. 13 (1991): 1678. http://dx.doi.org/10.1364/ao.30.001678.

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4

Desh, Raj Singh, K. Jain Sachin, and Vengurlekar Sudha. "Validation of spectrometric method for the determination of assay of terbinafine hydrochloride drug substance." Chemistry Research Journal 9, no. 2 (2024): 77–88. https://doi.org/10.5281/zenodo.11281809.

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<strong>Abstract </strong> The proposed RP- HPLC method has the advantages of sensitivity, simplicity, precision, accuracy and convenience for the separation and quantization of terbinafine hydrochloride in tablet dosage form. The method was carried out using Zodiac C18 column (100 X 4.6 mm, 5μ) with mobile phase comprised of methanol: acetonitrilein the ratio of 60:40 (v/v/v). The flow rate was set at 1.5ml/min and effluent was detected at 220nm. Under these conditions the retention time of terbinafine hydrochloride was found to be 3.57minute. The method was validated for specificity, accu

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Ranjith, Kumar, Kumar Ramaiah Siva, and Rao Madhusudhan. "Development of HPLC method for estimation of Ambrisentan from Immediate release tablets." American Journal of PharmTech Research 12, no. 3 (2022): 169–78. https://doi.org/10.5281/zenodo.6984393.

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ABSTRACT The aim of the present work was to develop and validate a simple and efficient method for the analysis of Ambrisentan in pharmaceutical dosage forms by reverse phase high pressure liquid chromatography. A stainless steel column 150 mm long, 4.6 mm internal diameter filled with octasilyl silica chemically bonded with silica gel particles of 5 mm diameter was used for elution. The retention time of Ambrisentan was 4.451 min. The method showed a good linearity in the concentration range of 12.5-250 µg/mL with a correlation coefficient of 1.000. The validation characteristics includ

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Prathap, VR, Kumar Ramaiah Siva, and Madhusudhan Rao Y. "Development of A New RP-HPLC Method For Estimation of Aprepitant From Solid Dosage Form." American Journal Of Pharmacy And Health Research 10, no. 10 (2022): 20–32. https://doi.org/10.5281/zenodo.7270307.

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ABSTRACT The aim of the present work was to develop and validate a simple and efficient method for the analysis of Aprepitant in pharmaceutical dosage forms by reverse phase high-pressure liquid chromatography. A stainless steel column 75 mm long, 4.6 mm internal diameter filled with octasilyl silica chemically bonded with synthetic hybrid silica gel particles of 3.5 mm diameter was used for elution. The retention time of Aprepitant was 4.05 min. The method showed a good linearity in the concentration range of 0.02478 – 0.07434 mg/mL with a correlation coefficient of 0.9999. The validati

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MAHESHWARI, SUDHANSHU. "CURRENT CONTROLLED PRECISION RECTIFIER CIRCUITS." Journal of Circuits, Systems and Computers 16, no. 01 (2007): 129–38. http://dx.doi.org/10.1142/s0218126607003496.

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A novel full-wave precision rectifier employing a single current controlled conveyor (CCCII) with three outputs, two complementary MOS transistors, and a resistor is proposed. The circuit enjoys high input impedance, current controlled output, good zero-crossing performance, and linearity. Another current controlled precision rectifier with no external resistor is also derived from the proposed circuit. RSPICE simulations using real device parameters are included to verify the proposed circuits.

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Ieggli, Carine Viana Silva, Simone Gonçalves Cardoso, and Luziane Potrich Belle. "Validation of UV Spectrophotometric and Nonaqueous Titration Methods for the Determination of Carvedilol in Pharmaceutical Formulations." Journal of AOAC INTERNATIONAL 88, no. 5 (2005): 1299–303. http://dx.doi.org/10.1093/jaoac/88.5.1299.

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Abstract Ultraviolet (UV) spectrophotometric and nonaqueous volumetric methods are described for the determination of carvedilol in pharmaceutical formulations. Linearity, precision, and accuracy were evaluated according to the validation guidelines of the International Conference on Harmonizationand the United States Pharmacopeia for both methods. The UV spectrophotometric procedure was performed in ethanol at 244 nm. Good linearity was obtained between 2 and 7 μg/mL with a correlation coefficient of 0.9999. The intra- and interday precision values were &lt;2% for all samples analyzed. Th

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Yu, A. Long, and Jin Qiao Dai. "A Method to Compensate Thermocouple Sensor Non-Linearity Based on Lagurre Orthogonal Polynomial Basis Functions Neural Network." Advanced Materials Research 834-836 (October 2013): 896–99. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.896.

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This paper presents a new method to compensate thermocouple sensor non-linearity based on laguerre orthogonal polynomial basis functions neural network. The mathematical model is established based on laguerre artificial neural network for non-linearity compensation. The principle and training algorithms of laguerre orthogonal polynomial basis functions neural network are introduced. The results show that non-linearity compensation method has the advantages of high precision, good real time and strong robustness, etc. The maximum non-linearity error is 0.17%.

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Rama, Annamalai, Induja Govindan, Srinivas Hebbar, Abhishek Chaturvedi, Usha Rani, and Anup Naha. "Advancing posaconazole quantification analysis with a new reverse-phase HPLC method in its bulk and marketed dosage form." F1000Research 12 (June 27, 2023): 468. http://dx.doi.org/10.12688/f1000research.132841.2.

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Introduction: Posaconazole is a widely used antifungal drug, and its accurate quantification is essential for quality control and assessment of its pharmaceutical products. This study aimed to develop and validate a reverse-phase high-performance liquid chromatography (HPLC) analytical method for quantifying Posaconazole in bulk and dosage form. Methods: The HPLC method was developed and validated based on International Conference on Harmonisation (ICH) guidelines. The developed method was then applied to quantify Posaconazole in a marketed tablet formulation. The method's specificity, lineari

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Rama, Annamalai, Induja Govindan, Srinivas Hebbar, Abhishek Chaturvedi, Usha Rani, and Anup Naha. "Advancing posaconazole quantification analysis with a new reverse-phase HPLC method in its bulk and marketed dosage form." F1000Research 12 (May 4, 2023): 468. http://dx.doi.org/10.12688/f1000research.132841.1.

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Introduction: Posaconazole is a widely used antifungal drug, and its accurate quantification is essential for quality control and assessment of its pharmaceutical products. This study aimed to develop and validate a reverse-phase high-performance liquid chromatography (HPLC) analytical method for quantifying Posaconazole in bulk and dosage form. Methods: The HPLC method was developed and validated based on International Conference on Harmonisation (ICH) guidelines. The developed method was then applied to quantify Posaconazole in a marketed tablet formulation. The method's specificity, lineari

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Gampa, Vijaya Kumar, Basavaling M Yalagatti, and Sravanthi B. "Integrated Analytical Quality by Design Approach for the Development and Validation of Liquid Chromatography Method for Simulataneous Estimation of Sulfadoxane and Pyrimethamine." Journal of Pharmaceutical and Biomedical Analysis Letters 13, no. 1 (2025): 31–36. https://doi.org/10.30904/j.jpbmal.2025.4821.

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This research evaluates a validated chromatographic method for analyzing sulfadoxine and pyrimethamine. A quadratic model was most effective for retention time analysis (p < 0.0001). System suitability met regulatory standards for resolution, theoretical plates, and tailing. The method was validated for assay, linearity, precision, intermediate precision, accuracy, LOD, and LOQ. Assay values were 99.79% (sulfadoxine) and 99.52% (pyrimethamine). Linearity showed strong correlation (r = 0.9996 and 0.9993, respectively). Precision was excellent (%RSD<1), and accuracy fell within 98–102%. LO

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Zhou, Lisha, Hongyu He, Jianfeng Sun, and Baojun Lin. "Phase-Shift Laser Ranging Technology Based on Multi-Frequency Carrier Phase Modulation." Photonics 9, no. 9 (2022): 603. http://dx.doi.org/10.3390/photonics9090603.

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Compared to traditional phase laser ranging technology, phase-shift laser ranging technology based on carrier phase modulation has significant advantages, such as simple modulation and demodulation, as well as simultaneous ranging and velocity measurements with high precision. To expand the range and ensure the ranging precision in carrier phase modulation in phase-shift laser ranging technology, we propose a phase-shift laser ranging system based on multi-frequency carrier phase modulation. We analyzed the effects of the stagger coefficient, modulation depth, and signal-to-noise ratio on the

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Mohan, S. "BIO ANALYTIC AND ANALYTIC METHOD QUANTITATIVE TO TUCATINIB ESTIMATION IN PURE AND PHARMACEUTICAL DOSAGE FORM." YMER Digital 21, no. 08 (2022): 782–92. http://dx.doi.org/10.37896/ymer21.08/65.

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A simple one, accurate and precise method for estimating tucatinib in tablet dosage form was developed on symmetry C18 column (150x4.6mm, 3.5µ) using buffer and acetonitrile 40:60 pumped through a column with 1ml/min flow rate 0.1 percent formic acid of the buffer used in this method. The run time was 6 min in assay method and 12 min in bio analytical method. Reference standard and sample solutions were prepared by dissolving firstly in acetonitrile and diluted with diluents (mobile phase). Cisplatin was used as internal standard in bio analytical technique. These assay and bio analytical meth

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15

McNair, Erick, A. Mabood Qureshi, and Cara Bally. "Performance Evaluation of the Plateletworks^® in the Measurement of Blood Cell Counts as compared to the Beckman Coulter Unicel DXH 800." Journal of ExtraCorporeal Technology 47, no. 2 (2015): 113–18. http://dx.doi.org/10.1051/ject/201547113.

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Prior to undergoing cardiac surgery many patients may have impaired platelet function due to platelet inhibition. Point of care testing (POCT) that produces quick results of platelet counts and function allow earlier clinician interpretation, diagnosis and treatment. Before being adopted for routine clinical use, a POCT device’s performance must be evaluated by standard laboratory techniques to ensure high quality results. The purpose of this study is to determine the performance of the Plateletworks® BC 3200 automated hematology analyzer by correlating its precision, accuracy and linearity fo

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Robbika, Oktavia Isma, Yuli Rohyami, and Hendra Hadriansyah. "Critical Quality Control on Determination of Boron Using ICP-OES with Gravimetric Method." IJCA (Indonesian Journal of Chemical Analysis) 5, no. 2 (2022): 103–10. http://dx.doi.org/10.20885/ijca.vol5.iss2.art5.

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Critical quality control on the determination of boron using ICP-EOS with gravimetric method is carried out. This study was conducted to examine the critical aspects which include linearity, LOD, LOQ, precision, and accuracy. Based on the results of the study showed that the determination of boron with the ICP-OES method was following the critical aspects of quality control test results. The linearity of the calibration curve with a concentration range of 0 - 10 mg/L has linearity with a correlation coefficient of 0.9998 and a determination coefficient of 0.9996. The standard solution calibrat

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Meilany, Laili, Ferra Naidir, and Novita Elia. "Pengujian Mutu Bahan Aktif IPA Glyphosate 480 SL dalam Sampel Produk Pestisida Secara Kromatografi Cair Kinerja Tinggi (HPLC)." Jurnal Rekayasa Hijau 9, no. 1 (2025): 70–79. https://doi.org/10.26760/jrh.v9i1.70-79.

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ABSTRAKSektor pertanian berperan penting dalam kehidupan, pembangunan, dan perekonomian Indonesia. Untuk meningkatkan produktivitas hasil panen, penggunaan pestisida, termasuk herbisida berbahan aktif seperti IPA Glyphosate, efektif dalam menghambat pertumbuhan gulma, sehingga tanaman utama dapat tumbuh optimal. Penelitian ini bertujuan untuk memastikan bahwa kadar bahan aktif IPA Glyphosate dalam produk pestisida sesuai dengan spesifikasi standar yang telah ditetapkan. Penentuan kadar bahan aktif IPA Glyphosate menggunakan metode HPLC pada kolom fase terbalik C-18 menggunakan fase gerak Aquab

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Kumar, Sunil, and Bigan Ram. "Analytical method development and validation of L-Carnitine L-Tartarate in Pharmaceutical Dosage forms (Multivitamin tablets) using non aqueous titration." Journal of Drug Delivery and Therapeutics 9, no. 4 (2019): 588–90. http://dx.doi.org/10.22270/jddt.v9i5.3591.

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The Non aqueous titration method was developed for quantitave analysis of L- Carnitine L-Tartarate in multivitamin tablets. The Non aqueous titration method was carried out using 0.1 N Perchloric acids. The present analytical method was validated according to ICH guidelines (ICH,Q2(R1)). The calibration curve was found to linear with correlation coefficient (r2=0.99995), Bias (-0.35) in the range of 50 to 150 % of standard solution. The precision and recovery were determined and all the parameter value found within acceptance limit. The value for both method and intermediate precision were fou

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19

Goldfinch, Monica E., and Gerald A. Maguire. "Investigation of the Use of Bilirubin Oxidase to Measure the Apparent Unbound Bilirubin Concentration in Human Plasma." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 25, no. 1 (1988): 73–77. http://dx.doi.org/10.1177/000456328802500110.

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An investigation into the use of bilirubin oxidase to measure the apparent concentration of unbound bilirubin in solutions of bilirubin or bilirubin/human serum albumin demonstrated (1) near linearity of oxidation rate with bilirubin concentration up to 16 μmol/L, (2) linearity with respect to enzyme concentration up to 75 mg/L, (3) specificity of the enzyme for unbound bilirubin, as opposed to bound bilirubin, (4) poor precision. Very small absorbance changes leading to poor precision and the potential for interference by conjugated bilirubin meant that the method was unsuitable for patient s

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Sunil Sukthankar, Sandesh Parab, Milind Pawar, and Ruturaj Vichare. "Development and validation of HPLC method for determination of amino acid mole ratio in Semaglutide." World Journal of Biology Pharmacy and Health Sciences 22, no. 1 (2025): 487–96. https://doi.org/10.30574/wjbphs.2025.22.1.0430.

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This study describes the development and validation of HPLC method for determination of amino acids mole ratio in Semaglutide. System suitability, specificity, Linearity and Range, Precision at specification level and Solution stability, Accuracy were studied to ensure amino acid mole ratio. The analytical method used for determination of amino acid mole ratio. System Suitability, Specificity, Linearity and range, Precision at specification level, and Accuracy. Hence, the method stands validated. The method can be used routinely for determination of amino acid mole ratio in Semaglutide in the

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Shim, You-Shin, Ki-Jin Kim, Dongwon Seo, et al. "Simultaneous Determination of Free Capsorubin and Capsanthin in Red Pepper Powder Using u-HPLC." Journal of AOAC INTERNATIONAL 96, no. 2 (2013): 341–45. http://dx.doi.org/10.5740/jaoacint.12-179.

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Abstract A simultaneous ultra-HPLC (u-HPLC) method for the determination of free capsorubin and capsanthin in red pepper powder was validated in terms of its precision, accuracy, and linearity. The u-HPLC separation was performed on an RP C18 column (particle size 2 μm, id 2 mm length 100 mm) and with a photodiode-array detector. The recoveries of capsorubin were greater than 83.8 ± 1.7%; the LOD and LOQ of the u-HPLC analyses were 0.043 and 0.129 mg/kg, respectively. The intraday and interday precisions for capsorubin were less than 9.01%. The recoveries of capsanthin were greater than 87.7 ±

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Wang, Guo Hui, Xiang Rong Li, and Xin Zhong Hou. "Genetic Algorithm Based Analysis System for Gun Pipe Linearity." Applied Mechanics and Materials 26-28 (June 2010): 330–33. http://dx.doi.org/10.4028/www.scientific.net/amm.26-28.330.

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Gun pipe linearity check and measure belongs to difficult deep-hole space check and measure. After the deviation data is obtained using designed linearity check and measure instrument for gun pipe, it need carry out analysis and operation to get the error. The essence of using minimum envelope region method to resolve and evaluate gun pipe linearity error is one optimizing problem about envelopment column surface, wherefore, it built error solution model of space linearity based on genetic algorithm, and it developed one solution and analysis software system using VB program. Application shows

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Supraja, B., C. Giridhar, Lakshmi V. Venkata, and Naidu N. VenkataSubba. "Analytical method development and validation analysis for quantitative assessment of cypermethrin by HPLC procedure." World Journal of Advanced Research and Reviews 14, no. 1 (2022): 541–53. https://doi.org/10.5281/zenodo.7040083.

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The precise, systematic, definite, particular, linear, exact and robust scientific method was developed and validated for the assay of Cypermethrin in Cypermethrin 25% EC Insecticide for Injection, USP 500 mg/vial. Presently utilized Cypermethrin 25 % EC Insecticide as a working standard having limit was 95% for method development and validation. The quantitative determination bring to accomplished by HPLC- Waters - Alliance 510 system equipped with UV/PDA detector. Methanol, Acetonitrile and water in the ratio (60:20:20 v/v/v) used as mobile phase and flow rate 1.0 ml / min. with 20 minutes r

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Ni, Fan, Jeffrey Ammann, and Abdul Mabud. "Monitoring Stevioside in Soju by High-Performance Liquid Chromatography and Liquid Chromatography/Mass Spectrometry." Journal of AOAC INTERNATIONAL 90, no. 5 (2007): 1365–72. http://dx.doi.org/10.1093/jaoac/90.5.1365.

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Abstract A method using high-performance liquid chromatography (HPLC) with UV absorption detection was developed to monitor stevioside in soju, a distilled spirits product that is commercially available. The method uses a single-step dilution for sample preparation. It completely eliminates the time-consuming process of solid-phase extraction. A method using HPLC/mass spectrometry was optimized to confirm the identities of stevioside and other related impurities, including rebaudioside A, rebaudioside C, and dulcoside. The method was validated. The validation parameters included range (10.1100

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V, Uma Maheshwar Rao, Arjun Goje, sravya s, swathi Ramavath, and Sravanthi U. "RP-HPLCMETHOD DEVELOPMENT AND VALIDATION OF KETOCONAZOLE IN BULK AND PHARMACEUTICAL DOSAGE FORM." Frontier Journal of Pharmaceutical Sciences and Research 1, no. 1 (2018): 1–8. https://doi.org/10.5281/zenodo.10801816.

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Asimple,precise,economicandaccurateisocraticRP-HPLCmethodhasbeendevelopedandsubsequentlyvalidatedforthedeterminationofKetoconazoleinbulkandpharmaceuticaldosageformsasperICHguidelines.TheseparationachievedonareversedphasePhenomenexLunaC18,100A,5m,250mmx4.6mmi.d.asastationaryphaseandAcetonitrile:Phosphatebufferintheratioof68:32v/vasmobilephaseataflowrateof1.0ml/min.TheUVdetectionwasperformedat242nm.TheretentiontimeforKetoconazolewasfoundtobe4.768min.Thedetectorresponsewaslinearintheconcentrationrangeof0-14μg/ml.The%RSDforprecisionandaccuracyofthemethodwasfoundtobelessthan2%.Therespectiveline

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Jung, Jinwoo, Kihak Lee, and Bonghwan Kim. "Precision Calibration and Linearity Assessment of Thin Film Force-Sensing Resistors." Applied Sciences 14, no. 16 (2024): 6859. http://dx.doi.org/10.3390/app14166859.

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In this study, we thoroughly analyzed the linearity and repeatability of force-sensing resistor (FSR) sensors through static load tests to ensure their reliability. The novelty of this research lies in its comprehensive evaluation and direct comparison of two widely used FSR sensors, i.e., Flexiforce A201-1 and Interlink FSR-402, under various loading conditions by employing a robust calibration methodology. This study provides detailed insights into the sensors’ performances, offering practical calibration equations that enhance measurement precision and reliability, which have not been exten

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Chang, Tee-Chin. "Simultaneous Monitoring of Bias, Linearity, and Precision of Multiple Measurement Gauges." Journal of Quality Technology 40, no. 3 (2008): 268–81. http://dx.doi.org/10.1080/00224065.2008.11917733.

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HOWE, JACOB M., and ANDY KING. "Three optimisations for sharing." Theory and Practice of Logic Programming 3, no. 2 (2003): 243–57. http://dx.doi.org/10.1017/s1471068402001497.

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To improve precision and efficiency, sharing analysis should track both freeness and linearity. The abstract unification algorithms for these combined domains are suboptimal, hence there is scope for improving precision. This paper proposes three optimisations for tracing sharing in combination with freeness and linearity. A novel connection between equations and sharing abstractions is used to establish correctness of these optimisations even in the presence of rational trees. A method for pruning intermediate sharing abstractions to improve efficiency is also proposed. The optimisations are

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Maslov, Oleksandr Yu, Sergii V. Kolisnyk, Mykola A. Komisarenko, et al. "Metrological Characteristics of the Potentiometric Assay Developed for Determining the Antioxidant Activity of Ascorbic Acid." Journal of Organic and Pharmaceutical Chemistry 21, no. 3 (2023): 31–37. http://dx.doi.org/10.24959/ophcj.23.276394.

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The potentiometric assay for determining the antioxidant activity of ascorbic acid has been developed and validated according to the following parameters: specificity, linearity, accuracy, repeatability, intermediate precision. The linearity was in the concentration range of 0.002 – 0.02 mol L–1 (r2 = 0.9993). The percentage of recovery was found to be in the range from 95.38 to 105.00 %. The values of %RSD for repeatability and intermediate precision were 1.86 and 1.95 %, respectively. The method is accurate and reliable, with the relative standard deviation of less than 2 %. It has been prov

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Nti Darko, Emmanuel, Isaac Bruce, Ekaniyere Oko-Odion, Kushagra Bhatheja, Saeid Karimpour, and Degang Chen. "Low-Cost Direct Digital Synthesis-Based On-Chip Waveform Generation for Analog/Mixed Signal BIST Applications." Metrology 5, no. 1 (2025): 8. https://doi.org/10.3390/metrology5010008.

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Waveform generation as part of on-chip built-in self-test (BIST) circuitry often necessitates sufficient linearity without expensive hardware overhead. Achieving high linearity is critical for accurate signal generation, especially in applications requiring high precision, such as biomedical and instrumentation applications. Currently, achieving the high linearity and precision required in signal generators often relies on costly hardware such as automated test equipment (ATE). This paper presents a DAC-based arbitrary waveform generator (AWG). We use a low-cost DAC and a fully digital on-chip

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Ortiz, Rocío, Mónica Antilén, Hernán Speisky, Margarita E. Aliaga, Camilo López-Alarcón, and Steve Baugh. "Application of a Microplate-Based ORAC-Pyrogallol Red Assay for the Estimation of Antioxidant Capacity: First Action 2012.03." Journal of AOAC INTERNATIONAL 95, no. 6 (2012): 1558–61. http://dx.doi.org/10.5740/jaoacint.cs2012_03.

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Abstract A method was developed for microplate-based oxygen radicals absorbance capacity (ORAC) using pyrogallol red (PGR) as probe (ORAC-PGR). The method was evaluated for linearity, precision, and accuracy. In addition, the antioxidant capacity of commercial beverages, such as wines, fruit juices, and iced teas, was measured. Linearity of the area under the curve (AUC) versus Trolox® concentration plots was [AUC = (845 ± 110) + (23 ± 2) [Trolox, μM]; R = 0.9961, n = 19]. Analyses showed better precision and accuracy at the highest Trolox concentration (40 μM) with RSD and recovery (REC) valu

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Sarafraz-Yazdi, Ali, Talat Rokhian, Amirhassan Amiri, and Ferial Ghaemi. "Carbon nanofibers decorated with magnetic nanoparticles as a new sorbent for the magnetic solid phase extraction of selected polycyclic aromatic hydrocarbons from water samples." New Journal of Chemistry 39, no. 7 (2015): 5621–27. http://dx.doi.org/10.1039/c5nj00859j.

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Wang, Guang Lin, Zhen Hua Liu, and Xu Dong Pan. "Research of Film Precise Potentiometer Linearity Automatically Measuring and Amending System." Key Engineering Materials 392-394 (October 2008): 79–82. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.79.

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This paper researched the film-precision potentiometer resistance, the development of its linear measuring and amending automation system, the application in aerospace field. The system with the X-Y table in the use of self-developed resistance to probe linear measurement, in the computer control of the special carved header of the sophisticated detection of potential amendments to meet the requirements of its linearity error. The entire process of measuring and repair inscribed industrial control computer supported by self-developed special software measurement and repair inscribed automatic,

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Sahoo, S., P. K. Panda, and S. K. Mishra. "HPLC METHOD DEVELOPMENT FOR ESTIMATION OF RAMELTEON IN TABLET DOSAGE FORM." INDIAN DRUGS 50, no. 06 (2013): 20–23. http://dx.doi.org/10.53879/id.50.06.p0020.

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A simple, fast, accurate and precise reverse phase HPLC method is developed and described for the determination of ramelteon in tablet dosage form. Chromatography was carried on an ODS column using a mixture of acetonitrile and phosphate buffer pH 7.0 (35:65 V/V) as the mobile phase at a flow rate of 1.0 mL/min with detection at 286 nm. The retention time of the drug was 7.7 min. The procedure was validated for linearity, precision, accuracy, and robustness. The developed method was validated for linearity from 50 to 150% which shows the method is quite linear with a correlation coefficient of

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Shim, You-Shin, Jong-Chan Kim, and Seung-Weon Jeong. "Simultaneous Determination of Piperine, Capsaicin, and Dihydrocapsaicin in Korean Instant-Noodle (Ramyun) Soup Base Using High-Performance Liquid Chromatography with Ultraviolet Detection." Journal of AOAC INTERNATIONAL 99, no. 1 (2016): 187–92. http://dx.doi.org/10.5740/jaoacint.15-0188.

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Abstract A simultaneous analytical method for piperine, capsaicin, and dihydrocapsaicin in Korean instant-noodle soup base using HPLC was validated in terms of precision, accuracy, sensitivity, and linearity. The HPLC separation was performed on a reversed-phase C18 column (5 μm particle size, 4.6 mm id, 250 mm length) using a UV detector fixed at 280 nm. The LOD and LOQ of the HPLC analyses ranged from 0.25 to 1.03 mg/kg. The intraday and interday precisions of the individual piperine, capsaicin, and dihydrocapsaicin were &lt;10.55%, and the recovery values ranged from 85.43 to 94.68%. Th

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Ceriotti, Ferruccio, Emma Guagnellini, Francesco Zoppi, Norberto Montalbetti, Carlo Okely, and Pierangelo Bonini. "Multicentre evaluation of the Monarch (IL) clinical chemistry analyser." Journal of Automatic Chemistry 11, no. 5 (1989): 206–11. http://dx.doi.org/10.1155/s1463924689000416.

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A multicentre evaluation of the Monarch centrifugal analyser is reported. Precision, linearity and accuracy were assessed by comparison with routine methods. Calibration stability, photometric and dispensing accuracy, and carry-over related to samples and reagents were also evaluated. The overall performance of the instrument was good, showing an excellent photometric and dispensing accuracy, absence of sample-dependent carry-over, and almost negligible reagent carry-over. Good precision, linearity and correlation with routine methods were found for the parameters tested. The instrument is rel

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Rahmani, Ali, and Maedeh Dahaghin. "UV Spectrophotometric method development and Validation for the Quantitative measurement of Rosmarinic Acid." Der Pharma Chemica 15, no. 3 (2023): 4. https://doi.org/10.5281/zenodo.13319465.

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The main aim of the current research was development and validation of simple, accurate UV spectrophometric method for measurement of Rosmarinic acid (RA). Method validation parameters including linearity, precision, specificity, accuracy, and limit of detection (LOD), limit of quantification (LOQ) were established. 327 nm was found to be the maximum wavelength of RA in solution. Calibration curve illustrated a linear correlation between the absorbance and concentration in the range of 1-14 µg/ml with a correlation coefficient (r2 ) of 0.9987. ICH guideline was studied for the linearity,

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Ali, Rahmani, and Dahaghin Maedeh. "UV Spectrophotometric method development and Validation for the Quantitative measurement of Rosmarinic Acid." DER PHARMA CHEMICA 15, no. 3 (2023): 4. https://doi.org/10.4172/0975-413X.15.3.1-4.

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The main aim of the current research was development and validation of simple, accurate UV spectrophometric method for measurement of Rosmarinic acid (RA). Method validation parameters including linearity, precision, specificity, accuracy, and limit of detection (LOD), limit of quantification (LOQ) were established. 327 nm was found to be the maximum wavelength of RA in solution. Calibration curve illustrated a linear correlation between the absorbance and concentration in the range of 1-14 µg/ml with a correlation coefficient (r2 ) of 0.9987. ICH guideline was studied for the linearity,

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Ali, Rahmani, and Maedeh Dahaghin. "UV Spectrophotometric method development and Validation for the Quantitative measurement of Rosmarinic Acid." Der Pharma Chemica 15, no. 3 (2023): 4. https://doi.org/10.5281/zenodo.10951963.

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The main aim of the current research was development and validation of simple, accurate UV spectrophometric method for measurement of Rosmarinic acid (RA). Method validation parameters including linearity, precision, specificity, accuracy, and limit of detection (LOD), limit of quantification (LOQ) were established. 327 nm was found to be the maximum wavelength of RA in solution. Calibration curve illustrated a linear correlation between the absorbance and concentration in the range of 1-14 µg/ml with a correlation coefficient (r2 ) of 0.9987. ICH guideline was studied for the linearity,

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40

Vidranski, Valentina, Maja Franceschi, Dražena Krilić, Tomislav Jukić, Ivan Mihaljević, and Zvonko Kusić. "Analytical evaluation of the new Seal Autoanalyzer 3 High Resolution for urinary iodine determination." Biochemia medica 29, no. 2 (2019): 394–401. http://dx.doi.org/10.11613/bm.2019.020711.

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Introduction: The aim of the study was to evaluate the analytical performance of the new colorimetric, automatic analyser, Seal AutoAnalyzer 3 High Resolution (Seal AA3 HR) (Seal Analytical, Wisconsin, USA) for urinary iodine measurement. Materials and methods: This study included testing of several analytical features of the method involving: imprecision (within-run %CVr, between- run %CVb and total laboratory precision %CVl), measurement uncertainty, carryover, linearity and method comparison, with 70 urine samples including the measuring range (20 - 700 μg/L). Results: Within-run, %CVb and

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Yilmaztekin, Murat, and Turgut Cabaroglu. "Confirmatory Method for the Determination of Volatile Congeners and Methanol in Turkish Raki According to European Union Regulation (EEC) No. 2000R2870: Single-Laboratory Validation." Journal of AOAC INTERNATIONAL 94, no. 2 (2011): 611–17. http://dx.doi.org/10.1093/jaoac/94.2.611.

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Abstract A method described by European Union Regulation (EEC) No. 2000R2870 was validated and supported by GC/MS analysis for the determination of volatile congeners and methanol in Turkish raki. The method was validated in terms of specificity, accuracy, precision, LOD, LOQ, linearity, and robustness. The specificity of the method was demonstrated, and the method showed excellent accuracy (97.5100.1). Linearity was checked in the ranges of 0.20026.390 mg/100 mL for more volatile compounds and 1.15548.00 mg/100 mL for less volatile compounds, after concentrations found in Turkish raki were ta

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Braun, Patrick, Rafael Delgado, Monica Drago, et al. "European Multicenter Study on Analytical Performance of DxN Veris System HCV Assay." Journal of Clinical Microbiology 55, no. 4 (2017): 1186–92. http://dx.doi.org/10.1128/jcm.02163-16.

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ABSTRACT The analytical performance of the Veris HCV Assay for use on the new and fully automated Beckman Coulter DxN Veris Molecular Diagnostics System (DxN Veris System) was evaluated at 10 European virology laboratories. Precision, analytical sensitivity, specificity, and performance with negative samples, linearity, and performance with hepatitis C virus (HCV) genotypes were evaluated. Precision for all sites showed a standard deviation (SD) of 0.22 log 10 IU/ml or lower for each level tested. Analytical sensitivity determined by probit analysis was between 6.2 and 9.0 IU/ml. Specificity o

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Pooja, M., CN Chaithra, and S. Rajasekaran. "Development and Validation of Novel Analytical Method for Estimation of Diltiazem HCL." INTERNATIONAL JOURNAL OF PHARMACEUTICAL AND BIO-MEDICAL SCIENCE 03, no. 03 (2023): 102–6. https://doi.org/10.5281/zenodo.7700952.

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A novel, simple, accurate and precise Zero order derivative spectroscopic method was developed and validated for the estimation of Diltiazem HCl in bulk and Pharmaceutical dosage forms and has an absorption maximum at 193 nm in 0.05N Sulphuric acid. The Linearity was found to be in the concentration range of 3-18 μg/ml and the correlation coefficient was found to be 0.998 and it has showed good linearity, reproducibility, precision in this concentration range. The regression equation was found to be Y = 0.0971x + 0.0268 .The % recovery values were found to be within 99.3 -102.06 % showed th

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Migliato, Ketylin Fernanda, Elisângela Simões de Carvalho, Luis Vitor Silva do Sacramento, et al. "Total polyphenols from Syzygium cumini (L.) Skeels fruit extract." Brazilian Journal of Pharmaceutical Sciences 45, no. 1 (2009): 121–26. http://dx.doi.org/10.1590/s1984-82502009000100015.

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A precise, accurate and low cost spectrophotometric method was developed and validated for routine determination of total polyphenols, as pyrogallic acid equivalents, from the percolated and lyophilized extract of Syzygium cumini (L.) Skeels fruits. Validation was assessed experimentally and data were rigorously treated by statistical analysis. Analytical parameters were: linearity, interval (range), precision and recovery/accuracy, limit of detection (LOD, μg mL-1) and limit of quantification (LOQ, μg mL-1). The visible spectrophotometric method presented linearity (r² = 0.9979 ± 0.0010) over

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Qasim Mezban Salih. "Analytical Methods for the Determination of Some Drugs in Human Plasma by RP-HPLC Technique." Wasit Journal for Pure sciences 3, no. 2 (2024): 352–60. http://dx.doi.org/10.31185/wjps.432.

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ABSTRACT: An RP-HPLC method for the estimation of Bosentan in plasma was developed and validated in this regard. It is an important drug for the treatment of pulmonary arterial hypertension, whose plasma level monitoring is very essential. The composition of the mobile phase, flow rate, and detection wavelength of the RP-HPLC method were mainly optimized to provide high resolution and peak symmetry. The parameters for specificity, linearity, accuracy, precision, LOD, and LOQ, among others, were checked and proved to have good linearity within the concentration range with r² > 0.999. The met

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Anwar, Hazil, Vivi Sisca, Elfizari P Siregar, Elizarni, Fejri Subriadi, and Sri Elfina. "VALIDATION OF THE USE OF ION CHROMATOGRAPHY FOR ANALYSIS OF FLUORIDE IN WATER." RASAYAN Journal of Chemistry 17, no. 03 (2024): 868–74. http://dx.doi.org/10.31788/rjc.2024.1738800.

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This research aims to validate the use of ion chromatography to determine fluoride anions. Determining the fluoride anion content in water is crucial to ensure its quality. Ion chromatography has proven to be efficient in this analysis, adhering to the APHA 4110B-2017 standard. Before being routinely used, the method must be verified to ensure adequate linearity, precision, accuracy, and detection limits. Testing shows a high correlation value (0.9986), with a detection limit (LoD) of 0.0034 mg/L and a quantification limit (LoQ) of 0.1132 mg/L. Precision (%RSD) is 1.02%, while accuracy (recove

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Susilo, S. P., S. H. Pertiwi, and A. Ainurofiq. "Development and validation of analytical methods for multicomponent crystals of ibuprofen with malic and tartaric acid using spectrophotometry." Journal of Physics: Conference Series 2190, no. 1 (2022): 012033. http://dx.doi.org/10.1088/1742-6596/2190/1/012033.

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Abstract Various chemical substances have been used as pharmaceutical active ingredients, such as ibuprofen, which is an analgesic. The validity of an analytical method of a pharmaceutical active ingredient combined with co-formers into one single phase should be confirmed so that the analysis can be well received. Therefore, this study aims to validate the analytical method of ibuprofen in multicomponent crystals using a UV spectrophotometer with the parameters of linearity, accuracy, precision, and placebo interference. Ibuprofen was dissolved in phosphate buffer with a pH of 7.2 using ethan

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Al-Rimawi, Fuad, and Maher Kharoaf. "Analysis of Chloramphenicol and Its Related Compound 2-Amino-1-(4-nitrophenyl)propane-1,3-diol by Reversed-Phase High-Performance Liquid Chromatography with UV Detection." Chromatography Research International 2011 (September 8, 2011): 1–6. http://dx.doi.org/10.4061/2011/482308.

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A simple and stability-indicating liquid chromatographic method is developed for the analysis of chloramphenicol and its related compound 2-amino-1-(4-nitrophenyl)propane-1,3-diol in two pharmaceutical forms. Liquid chromatography with a UV detector at a wavelength of 278 nm using a reversed phase C18 stationary phase has been employed in this study. Isocratic elution is employed using a mixture of sodium pentanesulfonate solution (0.012 M), acetonitrile, and glacial acetic acid (85 : 15 : 1, v/v). This new method is validated in accordance with USP requirements for new methods for assay deter

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Hsu, Jimmy C., Jeng Gong, and Chih Fang Huang. "An Automated-Switching Precision Decade Capacitor." Applied Mechanics and Materials 548-549 (April 2014): 719–24. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.719.

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A new automated-switching precision decade capacitor for applications in industries was designed and tested. By using coaxial microwave switches, the automated-switching precision decade capacitor can be automatically set by electrical TTL signals controlled by a computer. To prevent capacitance from drifting caused by variations of ambient temperature, the internal temperature of the automated-switching precision decade capacitor was effectively kept constant using a temperature-controlled oven with sufficiently thermal isolation. Furthermore, to fulfil the compact-size requirement for using

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Lafferty, John D., Andrew G. McFarlane, and David H. K. Chui. "Evaluation of a Dual Hemoglobin A2/A1c Quantitation Kit on the Bio-Rad Variant II Automated Hemoglobin Analyzer." Archives of Pathology & Laboratory Medicine 126, no. 12 (2002): 1494–500. http://dx.doi.org/10.5858/2002-126-1494-eoadha.

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Abstract Context.—Quantitation of hemoglobin (Hb) A1c and investigation of hemoglobinopathy on the Bio-Rad Variant analyzers require a switch between 2 separate kits that is time consuming and causes errors. Objective.—Evaluation of a new Variant II HbA2/HbA1c Dual kit capable of both Hb A1c quantitation and hemoglobinopathy investigation on a single kit. Design.—We evaluated Hb A1c, Hb A2, and Hb F quantitation for precision, linearity, and correlation with current methodology. We also evaluated detection of Hb variants and correlation of Hb Barts quantitation. Setting.—Hamilton Regional Labo

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