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Journal articles on the topic 'Photo Diode Array detector'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Liang, Yan Ru, Yu Yun Wen, Xiao Yan Hong, Zhen Bin Gong, and Wen Quan Li. "Laboratory Simulation Study of Photo-Degradation Process of Fenvalerate in Aqueous Solution." Applied Mechanics and Materials 312 (February 2013): 886–92. http://dx.doi.org/10.4028/www.scientific.net/amm.312.886.

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A laboratory-made the efficient photochemical degradation experimental device, combined with high performance liquid chromatography-tandem diode array detector device (DAD), fluorescence detector (FLD), mass spectrometer detector (MS), research fenvalerate its photo degradation. The structure of the spectral characteristics is the product, photo degradation reaction kinetics of degradation products, suggesting fenvalerate light chemical degradation process in an aqueous solution. The spectral characteristics of fenvalerate under ultraviolet light can be degraded into smaller organic molecules;

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2

Gummadi, Sowjanya, and Rajya Lakshmi Nimmagadda. "Quantification of Pitolisant: A RP - HPLC study." YMER Digital 21, no. 06 (2022): 896–907. http://dx.doi.org/10.37896/ymer21.06/89.

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Objective An attempt was made to develop a simple, isocratic and robust reverse phase high performance liquid chromatographic method for Pitolisant. Material and methods An Inertsil octa decyl silane column and photo diode array detector were employed for the quantification of Pitolisant at 268 nm using a mobile phase consisting of acetonitrile and 0.1 % v/v formic acid (90:10 % v/v) at a flow rate of 1.0 mL/min. for the efficient elution of Pitolisant. Results The developed method was validated for various parameters and the linearity range was observed at 25-150 µg/mL. The correlation coeffi

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Maynard, Michael S., and Heather D. Maynard. "HPLC assay for avermectin B1a and its two photoisomers using a photo diode array detector." Bulletin of Environmental Contamination and Toxicology 43, no. 4 (1989): 499–504. http://dx.doi.org/10.1007/bf01701926.

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Akhade, M. S., and K. S. Laddha. "QUANTITATIVE ASSESSMENT OF VASICINE AND VASICINONE IN DIFFERENT MARKETED FORMULATIONS USING HPLC." INDIAN DRUGS 56, no. 08 (2019): 79–80. http://dx.doi.org/10.53879/id.56.08.11254.

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The main aim was to study the variation in vasicine and vasicinone concentration in different marketed cough syrups using HPLC with photo-diode array detector. Since the marketed formulations were containing Adhathoda vasica extract of varying amount, the amount of vasicine, which is the main constituent, deviated extensively. Also a complete and effective extraction method for quantitative estimation of vasicine and vasicinone from these formulations has been developed. Subsequently, based on the results, it was concluded that the need arises to standardize these marketed formulations.

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Zunino, Alessandro, Giacomo Garrè, Eleonora Perego, Sabrina Zappone, Mattia Donato, and Giuseppe Vicidomini. "s²ISM: A Comprehensive Approach for Uncompromised Super-Resolution and Optical Sectioning in Image Scanning Microscopy." EPJ Web of Conferences 309 (2024): 04021. http://dx.doi.org/10.1051/epjconf/202430904021.

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Image Scanning Microscopy (ISM) enables good signal-to-noise ratio (SNR), super-resolution and high information content imaging by leveraging array detection in a laser-scanning architecture. However, the SNR is still limited by the size of the detector, which is conventionally small to avoid collecting out-of-focus light. Nonetheless, the ISM dataset inherently contains the axial information of the fluorescence emitters. We leverage this knowledge to achieve computational optical sectioning without sacrificing the conventional benefits of ISM. We invert the physical model to fuse the raw data

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Maccarone, Aurora, Giulia Acconcia, Ulrich Steinlehner, et al. "Custom-Technology Single-Photon Avalanche Diode Linear Detector Array for Underwater Depth Imaging." Sensors 21, no. 14 (2021): 4850. http://dx.doi.org/10.3390/s21144850.

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We present an optical depth imaging system suitable for highly scattering underwater environments. The system used the time-correlated single-photon counting (TCSPC) technique and the time-of-flight approach to obtain depth profiles. The single-photon detection was provided by a linear array of single-photon avalanche diode (SPAD) detectors fabricated in a customized silicon fabrication technology for optimized efficiency, dark count rate, and jitter performance. The bi-static transceiver comprised a pulsed laser diode source with central wavelength 670 nm, a linear array of 16 × 1 Si-SPAD det

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Garré, Giacomo, Alessandro Zunino, Francesco Fersini, and Giuseppe Vicidomini. "Pushing the performance of image scanning microscopy to its limits with maximum likelihood reconstruction." EPJ Web of Conferences 287 (2023): 03001. http://dx.doi.org/10.1051/epjconf/202328703001.

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Fast and sensitive detector arrays make Image Scanning Microscopy (ISM) the natural successor of confocal microscopy. Indeed, ISM enables super-resolution at an excellent signal-to-noise ratio. Optimizing photon collection requires large detectors and so more out-of-focus light is collected. Nonetheless, the ISM dataset inherently contains information on the axial position of the fluorescence emitters. We exploit such information to directly invert the cmresponding physical model with a maximum-likelihood approach and reassign the signal in the thr ee dimensions, improving the signal-to-backgr

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Sondhia, Shobha. "Liquid Chromatographic Determination of Imazosulfuron in Food Commodity, Water and Soil Using Photo Diode Array Detector." Asian Journal of Chemistry 28, no. 5 (2016): 1021–23. http://dx.doi.org/10.14233/ajchem.2016.19570.

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Ma, Kang, Ya Nan Yang, Xiao Xiong Jiang, Min Zhao, and Ye Qiang Cai. "Simultaneous determination of 20 food additives by high performance liquid chromatography with photo-diode array detector." Chinese Chemical Letters 23, no. 4 (2012): 492–95. http://dx.doi.org/10.1016/j.cclet.2011.12.018.

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10

Brink, H. A., C. Trevor, J. Hunt, and P. E. Mooney. "A New High Performance Detector for Electron Energy Loss Spectroscopy." Microscopy and Microanalysis 6, S2 (2000): 212–13. http://dx.doi.org/10.1017/s1431927600033559.

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The serial detectors traditionally used in Electron Energy Loss Spectroscopy (EELS) have mostly been replaced by parallel detection systems, for reasons of efficiency and ease of use. So far most parallel detection systems have been based on fiber or lens coupled Photo Diode Array (PDA). Although these systems have proven satisfactory they have some limitations: 1) high readout noise, 2) limited correction for gain variations and 3) point spread function or cross talk between channels all of which effects the ultimate sensitivity and resolution. This paper discusses a newly developed parallel

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Renna, Marco, Ji Hyun Nam, Mauro Buttafava, Federica Villa, Andreas Velten, and Alberto Tosi. "Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications." Instruments 4, no. 2 (2020): 14. http://dx.doi.org/10.3390/instruments4020014.

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In this paper we present a novel single-photon detector specifically designed for Non-Line-Of-Sight (NLOS) imaging applications within the framework of the DARPA REVEAL program. The instrument is based on a linear 16 × 1 Complementary Metal-Oxide-Semiconductor (CMOS) Single-Photon Avalanche Diode (SPAD) array operated in fast-gated mode by a novel fast-gating Active Quenching Circuit (AQC) array, which enables the detectors with sub-ns transitions thanks to a SPAD-dummy approach. The detector exhibits a timing resolution better than 50 ps (Full Width at Half Maximum - FWHM) at a measurement re

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Patel, D. M., B. Rana, S. Maru, et al. "Stability Indicating RP-UPLC Photo-Diode Array based Method for Determination of Edoxaban Tosylate." Asian Journal of Organic & Medicinal Chemistry 5, no. 3 (2020): 273–76. http://dx.doi.org/10.14233/ajomc.2020.ajomc-p270.

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The objective of the current study was to develop a specific, precise, accurate and robust gradient stability indicating reversed-phase ultra performance liquid chromatography (RP-UPLC-PDA) assay method and validated for determination of edoxaban tosylate in API. Gradient separation was achieved on an acquity UPLC BEH C18 column (50 mm, 2.1 mm and 1.7 μm) column using mobile phase of acetoitrile:20 mM potassium dihydrogen phosphate, pH 3.0 ± 0.05 adjust with OPA at flow rate of 0.6 mL/min, the injection volume was 1 μL and the detection was carried out of 289 nm by using photodiode array detec

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Rottmann, Jonas, Nicolas Schierbaum, Alexander Netaev, Manuel Ligges, and Karsten Seidl. "Single-photon avalanche diode (SPAD) array detector for high-throughput fluorescence lifetime flow cytometry." Current Directions in Biomedical Engineering 9, no. 1 (2023): 363–66. http://dx.doi.org/10.1515/cdbme-2023-1091.

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Abstract Time-domain measurement of the fluorescence lifetime in flow cytometry offers a complementary method to traditional flow cytometry, especially for the analysis of cells and biomolecules. Short measurement times due to high throughputs (cells/s) make a suited detector mandatory for a sufficient detection of the fluorescence signal and therefore the application of this method. We summarize the requirements for a suited detector for time resolved flow cytometry (TRFC) and present a new developed SPAD array detector with 100 pixels and 340 ns time between measurement windows, allowing a h

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Netaev, Alexander, Nicolas Schierbaum, and Karsten Seidl. "Advantages and Limitations of Fluorescence Lifetime Measurements Using Single-Photon Avalanche Diode (SPAD) Array Detector: A Comprehensive Theoretical and Experimental Study." Sensors 22, no. 10 (2022): 3822. http://dx.doi.org/10.3390/s22103822.

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Fast fluorescence lifetime (FL) determination is a major factor for studying dynamic processes. To achieve a required precision and accuracy a certain number of photon counts must be detected. FL methods based on single-photon counting have strongly limited count rates because of the detector’s pile-up issue and are suffering from long measurement times in the order of tens of seconds. Here, we present an experimental and Monte Carlo simulation-based study of how this limitation can be overcome using array detectors based on single-photon avalanche diodes (SPADs). We investigated the maximum c

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Y., Prashanthi1 Mohammed Asif Ahmed2 K. Vijaya 3. Riyazuddin. "METHOD DEVELOPMENT AND VALIDATION OF LENVATINIB DRUG BY RP-HPLC IN PHARMACEUTICAL DRUG DOSAGE FORM." iajps 03, no. 10 (2016): 1078–85. https://doi.org/10.5281/zenodo.162620.

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A novel approach has used for the development and validates a rapid, simple and an isocratic RP-HPLC method with PDA detector for the estimation of Lenvatinib drug in pharmaceutical drug dosage form. Lenvatinib was separated using YMC C 18, 4.6 X 150 mm, 5 µ analytical column, a Waters HPLC system and a mobile phase consists of water and methanol in the ratio of 30:70 % v/v, delivered at 0.6 ml/min with 20 µl injection volume. The detector wavelength was at 240 nm. The system suitability parameters for Lenvatinib drug such as theoretical plates and tailing factor were found to be 4384.4, 1.6 r

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Salzmann, Hans, Per Nielsen, and Chris Gowers. "Digital single-photon-avalanche-diode arrays for time-of-flight Thomson scattering diagnostics." Review of Scientific Instruments 93, no. 8 (2022): 083517. http://dx.doi.org/10.1063/5.0095252.

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The collection optics of Thomson scattering systems for plasma devices are designed with maximum possible étendue to keep the required laser energy low. If the spatial resolution along the laser beam is performed by a time-of-flight method, then the detectors, in addition to a large sensitive area, must offer a high frequency bandwidth. Up until now, only microchannel-plate photomultipliers meet these requirements. Here, we investigate the potential use of digital avalanche photodiode arrays operated in the Geiger mode as alternative detectors. In this mode of operation, each array will serve

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Ma, Kang, Xiaojia Li, Yiwen Zhang, and Fei Liu. "Determining High-Intensity Sweeteners in White Spirits Using an Ultrahigh Performance Liquid Chromatograph with a Photo-Diode Array Detector and Charged Aerosol Detector." Molecules 25, no. 1 (2019): 40. http://dx.doi.org/10.3390/molecules25010040.

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In China, white spirit is not only an alcoholic drink but also a cultural symbol. A novel and accurate method for simultaneously determining nine sweeteners (most authorized for use in China) in white spirits by ultrahigh performance liquid chromatography (UHPLC) with a photo-diode array detector (PDA) and charged aerosol detector (CAD) was developed. The sweeteners were acesulfame, alitame, aspartame, dulcin, neotame, neohesperidine dihydrochalcone, saccharin, sodium cyclamate, and sucralose. The sweeteners were separated within 16 min using a BEH C18 column and linear gradient-elution progra

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Afroze, M., MDH Prodhan, A. Begum, MS Ahmed, and D. Sarker. "Purity Level of Different Brands of Marketed Pesticides." Bangladesh Journal of Agricultural Research 46, no. 2 (2023): 167–74. http://dx.doi.org/10.3329/bjar.v46i2.64120.

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The study was undertaken to determine the purity level of eleven selected pesticides collected from different locations of Bangladesh. In this study, Gas Chromatography coupled with Flame Ionization Detector (FID) and Electron Captured Detector (ECD) was used to determine the purity of acephate, diazinon, dimethoate, chlorpyrifos, quinalphos, malathion, fenitrothion cypermethrin, fenvalerate. High Performance Liquid Chromatography (HPLC 20A Prominence) coupled with Photo Diode Array (PDA) detector was used to determine the purity of carbofuran and carbosulfan. Results indicated that 40% of the

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Scattolo, Elia, Alessandro Cian, Luisa Petti, Paolo Lugli, Damiano Giubertoni, and Giovanni Paternoster. "Near Infrared Efficiency Enhancement of Silicon Photodiodes by Integration of Metal Nanostructures Supporting Surface Plasmon Polaritrons." Sensors 23, no. 2 (2023): 856. http://dx.doi.org/10.3390/s23020856.

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Recent years have witnessed a growing interest in detectors capable of detecting single photons in the near-infrared (NIR), mainly due to the emergence of new applications such as light detection and ranging (LiDAR) for, e.g., autonomous driving. A silicon single-photon avalanche diode is surely one of the most interesting and available technologies, although it yields a low efficiency due to the low absorption coefficient of Si in the NIR. Here, we aim at overcoming this limitation through the integration of complementary metal–oxide–semiconductor (CMOS) -compatible nanostructures on silicon

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KARUNAKARA, Chandrashekara, Udupi APARNA, Venkateshappa CHANDREGOWDA, and Chandrasekara G. REDDY. "Separation and Determination of Process-Related Impurities of Erlotinib Using Reverse-Phase HPLC with a Photo-Diode Array Detector." Analytical Sciences 28, no. 3 (2012): 305. http://dx.doi.org/10.2116/analsci.28.305.

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MA, Kang, Xiao-Xiong JIANG, Min ZHAO, and Ye-Qiang CAI. "Simultaneous Determination of 20 Food Additives in Drinks by High Performance Liquid Chromatography Coupled with Photo-diode Array Detector." CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION) 40, no. 11 (2013): 1661–67. http://dx.doi.org/10.3724/sp.j.1096.2012.20176.

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Mehta, Jignasu P., Chirag R. Fultariya, Pravin H. Parmar, Sohil H. Vadia, and Balubhai A. Golakiya. "Determination of phenolic acids and a flavonoid in Eleusine coracana (L.) by semi-preparative HPLC photo diode array detector." Journal of Analytical Chemistry 70, no. 3 (2015): 369–73. http://dx.doi.org/10.1134/s1061934815030090.

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23

Seo, Chang-Seob. "Simultaneous Analysis of Bergapten and Schinifoline in Zanthoxylum schinifolium Seeds Using HPLC and UPLC-MS/MS Systems." Foods 12, no. 7 (2023): 1355. http://dx.doi.org/10.3390/foods12071355.

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Zanthoxylum schinifolium Siebold et Zuccarini belongs to the Rutaceae family and has been widely used as a spice in East Asian countries such as Korea, China, and Japan. The present study focused on developing and validating a simultaneous analytical method for marker substances (bergapten and schinifoline) in Z. schinifolium seeds. This was achieved using high-performance liquid chromatography with a photo-diode array detector (HPLC-PDA) and ultra-performance liquid chromatography with tandem mass spectrometry (UPLC-MS/MS) systems. In the regression equation, all markers showed a coefficient

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De Vos, Joeri, Anne Jourdain, Wenqi Zhang, Koen De Munck, Piet De Moor, and Antonio La Manna. "The Road towards Fully Hybrid CMOS Imager Sensors." International Symposium on Microelectronics 2011, no. 1 (2011): 000173–80. http://dx.doi.org/10.4071/isom-2011-ta5-paper5.

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Monolithic imagers contain the photosensitive elements as well as the read-out IC (ROIC) on the same substrate. Backside thinning on carrier enables efficient collection of photo-generated carriers through back illumination, resulting in almost 100% fill factor. This contrary to front side illumination where light loss is introduced by reflection on metal interconnects. Together with an optimized backside ARC coating, high quantum efficiency (QE) can be achieved. Hybrid imagers consist of a detector array that is produced separately and hybridized on a ROIC. A fully-hybrid backside illuminated

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Siddiqui, Khushnuma, and Bhavana Dubey. "Analytical Method Development and Validation of Ondansetron and Telmisartan in Tablet Dosage Form by RP-UPLC Method." Journal of Drug Delivery and Therapeutics 12, no. 4-S (2022): 112–27. http://dx.doi.org/10.22270/jddt.v12i4-s.5548.

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The objective of the present analysis was the improvement of easy, exact as well as reproducible and precise verifies reversed phase Liquid Chromatography with High Performance [UPLC] assays for Telmisartan and Ondansetron. The chromatographic splitting up was done on Acuity UPLC BEH C 18 (50×2.1mm and1.7µm) column with gradient elution. The injection amount was 1µl and also the detection was performed at 214 nm by utilizing photo diode array detector. The evolved as well as a validated UPLC way of Telmisartan and Ondansetron in tablet dosage styles based on ICH tips was precise and accurate,

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kumar, Anshul, Chandana Majee, and Vivek Namdev. "Analytical Method development and Validation of Lamivudine in Formulation by using Reversed Phase Ultra Performance Liquid Chromatography." International Journal of PharmTech Research 13, no. 2 (2020): 1–6. http://dx.doi.org/10.20902/ijptr.2019.130201.

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Aim of the experiment was to develop a simple, specific and accurate reverse phase ultra-performance liquid chromatographic (UPLC) method for the determination of lamivudine in the tablet dosage forms. The chromatographic separation was achieved on Acquity UPLC HSST3 (2.1 x 100mm) 1.8 um particle size and the mobile phase containing 0.1%TFA: MeOH for lamivudine. The run time was 10 min and the retention time of lamivudine was about 4.6. The detection was carried out 215nm using photo diode array detector (PDA) with a flow rate 0.6 ml/min. The linearity of lamivudine with correlation coefficien

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Balireddi, Venu, Krishna Murthy Tatikonda, Siva Rao Tirukkovalluri, Surikutchi Bhanu Teja, and Srikanth Manne. "Simultaneous Determination of Multiple Preservatives and Antioxidants in Topical Products by Ultra-Pressure Liquid Chromatography with Photo Diode Array Detector." Journal of Liquid Chromatography & Related Technologies 38, no. 14 (2015): 1361–70. http://dx.doi.org/10.1080/10826076.2015.1057644.

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Wilson, A. R. "The response of yttrium aluminium garnet scintillator and photo-diode array detectors used in PEELS." Measurement Science and Technology 4, no. 8 (1993): 835–41. http://dx.doi.org/10.1088/0957-0233/4/8/006.

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Satya Venkata M, Sakuntala, Lakshmana Rao A, and William Carey M. "STABILITY INDICATING HPLC METHOD DEVELOPMENT AND VALIDATION FOR SIMULTANEOUS ESTIMATION OF LAMIVUDINE AND DOLUTEGRAVIR IN BULK AND TABLET DOSAGE FORM." Indian Drugs 58, no. 12 (2022): 54–62. http://dx.doi.org/10.53879/id.58.12.12434.

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A rapid high-performance liquid chromatographic method has been developed and validated for quantification of lamivudine and dolutegravir, used to manage HIV infections. Lamivudine and dolutegravir are separated as symmetrical peaks on the analytical column Inertsil ODS, 150 mm x 4.6 mm, 5.0 µm using 50 % acetonitrile and 50 % triethylamine buffer as mobile phase and detected by photo diode array detector at wave length 250 nm. The total chromatographic runtime is 6.0 min with retention times for lamivudine and dolutegravir at 2.457 and 3.888 min, respectively. The method was validated accordi

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Rohith, S. B., B. M. Gurupadayya, and R. S. Chandan. "DEVELOPMENT AND VALIDATION OF A RP-UFLC ANALYTICAL METHOD FOR THE DETERMINATION OF OPIPRAMOL IN TABLET DOSAGE FORM." INDIAN DRUGS 52, no. 11 (2015): 24–28. http://dx.doi.org/10.53879/id.52.11.10267.

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A novel ultra-fast liquid chromatography (RP- UFLC) analytical method has been developed to quantify opipramol in tablet formulations. The determination was carried out by means of a Phenomenex Luna C8 Column (250×4.60mm, 5μ); potassium dihydrogen phosphate buffer of pH 2.4 and acetonitrile was used as a mobile phase in the ratio of 60:40 V/V with a flow rate of 1.00 mL/min. The photo diode array (PDA) detector was operated at wavelength of 253nm. The retention time for opipramol was found to be 2.72min. The validation studies were carried out according to ICH guidelines with a specific aim to

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Hong, Paula, Aaron D. Phoebe, and Michael D. Jones. "Study of relative response factors and mass balance in forced degradation studies with liquid chromatography/photo-diode array detector/evaporative light scattering detector/mass spectrometry system." Journal of Chromatography A 1512 (August 2017): 61–70. http://dx.doi.org/10.1016/j.chroma.2017.07.001.

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Zhang, R., S. Draycott, I. Gyongy, D. M. Ingram, and I. Underwood. "A novel contactless technique to measure water waves using a single photon avalanche diode detector array." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 477, no. 2247 (2021): 20200457. http://dx.doi.org/10.1098/rspa.2020.0457.

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Commonly deployed measurement systems for water waves are intrusive and measure a limited number of parameters. This results in difficulties in inferring detailed sea state information while additionally subjecting the system to environmental loading. Optical techniques offer a non-intrusive alternative, yet documented systems suffer a range of problems related to usability and performance. Here, we present experimental data obtained from a 256 × 256 Single Photon Avalanche Diode (SPAD) detector array used to measure water waves in a laboratory facility. 12 regular wave conditions are used to

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NAGESWARA RAO, R., and A. NARASARAJU. "Rapid Separation and Determination of Process-Related Substances of Paracetamol Using Reversed-Phase HPLC with Photo Diode Array as a Detector." Analytical Sciences 22, no. 2 (2006): 287–92. http://dx.doi.org/10.2116/analsci.22.287.

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Takale, Nilesh, Neelakandan Kaliyaperumal, Gopalakrishnan Mannathusamy, and Rajarajan Govindasamy. "Method Development and Validation for Quantitative Analysis of Anti-Histamine Promethazine Hydrochloride by RP-UPLC." Oriental Journal Of Chemistry 37, no. 1 (2021): 33–39. http://dx.doi.org/10.13005/ojc/370103.

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The quantitative analysis method for the quantitative analysis of the anti-histaminic drug Promethazine Hydrochloride (PMZ•HCl) is stated by a straightforward, smooth, reliable and reverse step of the ultra-performing liquid chromatographic method (RP-UPLC). Following ICH quidelinesQ2(R1), the RP-UPLC method has been developed and checked. The uniform solution of 3.4% KH2PO4 solution in water, 7.0 pH with dilute KOH, ACN, andMeOH in ratio of 40:40:20, used as a mobile phase. The flow of 0.6 mL/minusing photo diode array detector / UV detector by with wavelength of 254 nm and runtime 3 min. Thi

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Ashutosh, Kumar S., Debnath Manidipa, Rao J. V. L. N. Seshagiri, and Sankar D. Gowri. "Validation of developed method by RP-HPLC for estimation of Prasugrelin human plasma and studying the stability of the drugs in plasma." Kathmandu University Journal of Science, Engineering and Technology 13, no. 1 (2018): 65–75. http://dx.doi.org/10.3126/kuset.v13i1.21263.

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This paper is concern with a reverse phase high performance liquid chromatography (RP-HPLC) bio-analytical method development and validation for Prasugrel in human plasma using photo diode array detector (PDA detector). The HPLC separation was carried out in an isocratic mode on an X-Terra C18 column (4.6 x 150 mm; 5 μm) with a mobile phase consisting of potassium dihydrogen phosphate [pH 3.0] and acetonitrile in the ratio of 30:70 v/v at a flow rate of 1.0 mL/min. The run time was maintained for 5 mins and the detection was monitored at 210 nm. The percentage recovery was found 99.61-100.06 i

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Masaki, Jun, Nobuhiro Okada, and Eiji Kondo. "A Range Finder System with Electronically Maskable Photo Detecting Device Array." Journal of Robotics and Mechatronics 15, no. 3 (2003): 322–30. http://dx.doi.org/10.20965/jrm.2003.p0322.

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A range finder realizable with an easy circuit composition is proposed. The range finder is based on the slit-ray projection method. In the system, positions of slit-ray images on an image plane are detected by using pattern masks electronically provided to the image plane. Due to using the electronic pattern masks, the range finder realizes high cost performance, highspeed measurement and small size. In order to estimate measurement speed, a prototype circuit has been developed. The experimental results obtained by the circuit have indicated that the range finder will be able to take a range

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Balaram V., Murali, VENKATESWARA Rao J., Ramakrishnag S. Sankar Ganesh G., and Balamurali Krishna T. "Validated Reverse Phase HPLC Method for the Determination of Irinotecan in Pharmaceutical Dosage Forms." E-Journal of Chemistry 4, no. 1 (2007): 128–36. http://dx.doi.org/10.1155/2007/597409.

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A simple and rapid reverse phase high performance liquid chromatography (RP-HPLC) method was developed and validated for quantitative determination of irinotecan in bulk drug samples and formulations. Irinotecan was analyzed by using reverse phase cyano column (4.6 mmx25 cm, 5 microns), with mobile phase consisting of phosphate buffer: acetonitrile (75:25v/v), pH adjusted to 2.5 with phosphoric acid. The flow rate was set 0.8 mL/min and the analysis was performed at wavelength 225 nm using Photo Diode Array (PDA) detector at ambient temperature. The method was validated and stability studies w

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Murti, Damar Bayu, A. B. Susanto, Ocky Karna Radjasa, and Ferdy Semuel Rondonuwu. "Pigments Characterization and Molecular Identification of Bacterial Symbionts of Brown Algae Padinasp. Collected from Karimunjawa Island." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 21, no. 2 (2016): 58. http://dx.doi.org/10.14710/ik.ijms.21.2.58-64.

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The search for carotenoids in nature has been extensively studied because of their applications in foods. One treasure of the biopigment source is symbiotic-microorganisms with marine biota. The advantages of symbiont bacteria are easy to culture and sensitize pigments. The use of symbiont bacteria helps to conserve fish, coral reefs, seagrass, and seaweed. Therefore, the bacteria keeps their existence in their ecosystems. In this study, bacterial symbionts were successfully isolated from brown algae Padina sp. The bacterial symbionts had yellow pigment associated with carotenoids. The pigment

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Makawi, Suzan Zein Alabdeen, Elrasheed Ahmed Gadkariem, and Saad Mohamed Hussein Ayoub. "Determination of Antioxidant Flavonoids in Sudanese Honey Samples by Solid Phase Extraction and High Performance Liquid Chromatography." E-Journal of Chemistry 6, s1 (2009): S429—S437. http://dx.doi.org/10.1155/2009/382504.

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Flavonoids were extracted by solid phase extraction (SPE) from seven floral honey samples of different botanical origin from different regions of Sudan. The flavonoids were determined by high performance liquid chromatography (HPLC) technique using photo diode array detector (PDA). An isocratic and gradient systems for the resolution, identification and quantification of five flavonoids, namely; quercetin, kaempferol, apigenin, hesperetin and isorhamnetin, were developed. Although the isocratic system resolved the five compounds, however it suffered from interference by the complex mixture of

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Karra, Uma Mahesh, and Sanjeeva Yarkala. "A Simple and Validated Reverse Phase HPLC Methodfor the Determination of Rabeprazole inPharmaceutical Dosage Forms." E-Journal of Chemistry 7, no. 2 (2010): 569–77. http://dx.doi.org/10.1155/2010/412194.

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A simple and rapid reverse phase high performance liquid chromatography (RP-HPLC) method was developed and validated for quantitative determination of rabeprazole in bulk drug samples and formulations. Rabeprazole was analyzed by using reverse phase LC-GC column (Inertsil ODS, 4.6 mm x 25 cm, 5 microns), with mobile phase consisting of methanol: water (78:22 v/v). The flow rate was set 1.0 mL/min and analysis was performed at wavelength 288 nm using Photo Diode Array (PDA) detector at ambient temperature. The method was validated and stability studies were conducted under different conditions.

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Naoto Furusawa. "Pipetting sample preparation with water eluent followed by water mobile phase HPLC analysis for residual monitoring of melamine in milk." World Journal of Chemical and Pharmaceutical Sciences 2, no. 1 (2023): 017–22. http://dx.doi.org/10.53346/wjcps.2023.2.1.0032.

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The author introduces a small-scale, time shortening, economical sample preparation with water eluent followed by an isocratic water phase HPLC system for quantifying melamine in cow’s milk. Sample preparation is achieved by homogenization using a handheld ultrasonic-homogenizer with water followed by MonoTipⓇC18 pipette tip contains silica monolith bonded with octadecyl group with water eluent. For determination and identification of analyte, the HPLC uses an analytical C18 column, an isocratic 100% water, and a photo-diode array detector. The procedure, performed under a 100% water condition

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Guo, Yawen, Zhaoyuan He, Yali Zhu, et al. "Separation and Detection of Abamectin, Ivermectin, Albendazole and Three Metabolites in Eggs Using Reversed-Phase HPLC Coupled with a Photo Diode Array Detector." Foods 11, no. 23 (2022): 3894. http://dx.doi.org/10.3390/foods11233894.

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An innovative and sensitive approach using high-performance liquid chromatography-photo diode array detection (HPLC-PDAD) was developed and optimized for the simultaneous determination of abamectin (ABM), ivermectin (IVM), albendazole (ABZ) and three metabolites in eggs. The samples were extracted with acetonitrile (MeCN)/water (90:10, v/v), and the extracts containing the targets were cleaned up and concentrated by a series of liquid–liquid extraction (LLE) steps. A reversed-phase C18 column and a mobile phase consisting of 0.1% trifluoroacetic acid (TFA) aqueous solution and methanol (MeOH)

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Nimmagadda, Rajya L., and Sowjanya Gummadi. "Concurrent Estimation of a Three Combination Type-2 Anti-diabetic Oral Dosage Form by Ultra-performance Liquid Chromatography." INTERNATIONAL JOURNAL OF PHARMACEUTICAL QUALITY ASSURANCE 14, no. 04 (2023): 1171–77. http://dx.doi.org/10.25258/ijpqa.14.4.53.

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Estimation of a three-combination dosage form containing metformin (MET), vildagliptin (VLDG), and remogliflozin etabonate (REMET) was performed by developing an economically simple and isocratic simultaneous method using ultra-performance liquid chromatograph (Alliance 1100 series) comprising of X-Bridge (50 × 4.6 mm, 2.5 μ) C18 column and photo diode array detector. 0.1 % v/v trifluoro acetic acid: acetonitrile (60:40% v/v) movable phase at 0.5 mL/min was used. The analytes were detected at a wavelength of 240.0 nm at 8.0 min. run time. The respective retention times of 1.004, 2.005, 5.118 m

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Mehta, Jignasu P., Chintan V. Pandya, Pravin H. Parmar, Sohil H. Vadia, and Balubhai A. Golakiya. "Determination of flavonoids, phenolic acid and polyalcohol in Butea monosperma and Hedychium coronarium by semi-preparative HPLC Photo Diode Array (PDA) Detector." Arabian Journal of Chemistry 7, no. 6 (2014): 1110–15. http://dx.doi.org/10.1016/j.arabjc.2012.11.015.

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Tammisetty, Mohanrao, Challa balasekhara Reddy, and Puttagunta Srinivasa Babu. "A NEW INVESTIGATIONAL METHOD FOR QUANTIFICATION AND VALIDATION OF ANALYTICAL METHOD FOR CEFIXIME AND ERDOSTEINE BY UPLC WITH PHOTO DIODE ARRAY DETECTOR IN BULK AND FORMULATION. APPLICATION TO THE ESTIMATION OF PRODUCT TRACES." INDIAN DRUGS 57, no. 11 (2021): 52–62. http://dx.doi.org/10.53879/id.57.11.12491.

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Specific and innovative method was developed and validated for the identification and quantification of cefixime and erdosteine in the bulk and formulation samples by UPLC with PDA detector.The analytical technique was with buffer (pH: 7.0): methanol, (65:35%, v/v) using the Sunfire C18, 5μ, 46mmX150mm analytical column with analysis time of six minutes. Flow of mobile phase through the column was 1.0 mL/min. Sample volume was 10 μL. Detection was carried at 254 nm in photo diode array detector. The retention times of cefixime and erdosteine were 2.012 min and 3.122 min., respectively. The cur

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Yan, Liangwen, Yue Yu, Sijung Hu, et al. "Illumination Adaptation in a Multi-Wavelength Opto-Electronic Patch Sensor." Sensors 20, no. 17 (2020): 4734. http://dx.doi.org/10.3390/s20174734.

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In capturing high-quality photoplethysmographic signals, it is crucial to ensure that appropriate illumination intensities are used. The purpose of the study was to deliver controlled illumination intensities for a multi-wavelength opto-electronic patch sensor that has four separate arrays each consisting of four light-emitting diodes (LEDs), the wavelength of the light generated by each array being different. The study achieved the following: (1) a linear constant current source LED driver incorporating series negative feedback using an integrated operational amplifier circuit; (2) the fittin

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Yang, Xu, ZiYi Tong, PengFei Jiang, et al. "Deep-learning based photon-efficient 3D and reflectivity imaging with a 64 × 64 single-photon avalanche detector array." Optics Express 30, no. 18 (2022): 32948. http://dx.doi.org/10.1364/oe.465918.

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A single photon avalanche diode (SPAD) is a high sensitivity detector that can work under weak echo signal conditions (≤1 photon per pixel). The measured digital signals can be used to invert the range and reflectivity images of the target with photon-efficient imaging reconstruction algorithm. However, the existing photon-efficient imaging reconstruction algorithms are susceptible to noise, which leads to poor quality of the reconstructed range and reflectivity images of target. In this paper, a non-local sparse attention encoder (NLSA-Encoder) neural network is proposed to extract the 3D inf

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Maritha, Vevi, and Lukman Labasy. "Validation of Metamizole, Thiamin and Pyridoxine Simultaneous Analysis Methods in Tablet Preparations Using HPLC." Aloha International Journal of Health Advancement (AIJHA) 1, no. 1 (2018): 19. http://dx.doi.org/10.33846/aijha10105.

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The aim of the present study was to develop and validate HPLC method for the simultaneous assay of metamizole, thiamine and pyridoxine in tablet. Metamizole is a substance that is easily hydrolyzed in the precence of water and oxygen. To inhibit the hydrolysis of metamizole during sample preparation prior to HPLC analysis, sodium sulfite is added and its optimum concentration was investigated. The chromatographic system includes a RP C8(2) column (150x4.6 mm, 5 µm particle size) in conjunction with Photo Diode Array (PDA) detector. The optimal chromatographic condition was obtained using a mob

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Killi, Gnana Deepika, Rama Krishna Maddinapudi, Sathis Kumar Dinakaran, and Avasarala Harani. "A novel validated UPLC method for quantitation of lopinavir and ritonavir in bulk drug and pharmaceutical formulation with its impurities." Brazilian Journal of Pharmaceutical Sciences 50, no. 2 (2014): 301–8. http://dx.doi.org/10.1590/s1984-82502014000200009.

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A simple gradient Ultra Performance liquid chromatographic method (UPLC) was developed for determination of lopinavir and ritonavir from its related impurities and assay for the ﬁrst time. This method involves the use of a C18 (Acquity UPLC BEH C18, 50 × 2.1 mm, 1.7 µm) column thermostated at 30 oC using triethylamine (pH 2.2): 0.1% H3PO4 in acetonitrile and methanol (85:15) as mobile phase in gradient elution mode. A Photo Diode Array (PDA) detector set at 215 nm was used for detection with flow rate 0.4 mL/min. This method was validated over the range of limit of quantitation (LOQ) to 50 to

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Bhadra, Subrata, Sreedam Chandra Das, Sumon Roy, Shamsul Arefeen, and Abu Shara Shamsur Rouf. "Development and Validation of RP-HPLC Method for Quantitative Estimation of Vinpocetine in Pure and Pharmaceutical Dosage Forms." Chromatography Research International 2011 (November 15, 2011): 1–7. http://dx.doi.org/10.4061/2011/801656.

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A simple, precise, specific, and accurate reversed phase high performance liquid chromatographic (RP-HPLC) method was developed and validated for determination of vinpocetine in pure and pharmaceutical dosage forms. The different analytical performance parameters such as linearity, accuracy, specificity, precision, and sensitivity (limit of detection and limit of quantitation) were determined according to International Conference on Harmonization ICH Q2 (R1) guidelines. RP-HPLC was conducted on Zorbax C18 (150 mm length × 4.6 mm ID, 5 μm) column. The mobile phase was consisting of buffer (cont

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