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Al-Halawani, R. ORCID: 0000-0002-6193-921X, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2025). Monte Carlo Simulation of the Effect of Melanin Concentration on Light–Tissue Interactions in Reflectance Pulse Oximetry. Sensors, 25(2), article number 559. doi: 10.3390/s25020559

Al-Halawani, R. ORCID: 0000-0002-6193-921X, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2025). Analysis of the Effect of Skin Pigmentation and Oxygen Saturation on Monte Carlo-Simulated Reflectance Photoplethysmography Signals. Sensors, 25(2), article number 372. doi: 10.3390/s25020372

Ahmed, T. ORCID: 0000-0002-4990-5631, Powner, M. B. ORCID: 0000-0003-4913-1004, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2024). Rapid optical determination of salivary cortisol responses in individuals undergoing physiological and psychological stress. Scientific Reports, 14(1), article number 31578. doi: 10.1038/s41598-024-69466-5

Al-Halawani, R., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2024). Monte Carlo simulation of the effect of melanin concentration on light-tissue interactions in transmittance and reflectance finger photoplethysmography. Scientific Reports, 14(1), article number 8145. doi: 10.1038/s41598-024-58435-7

Al-Halawani, R., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2024). Monte Carlo simulation of the effect of melanin concentration on light–tissue interactions for transmittance pulse oximetry measurement. Journal of Biomedical Optics, 29(S3), S33305-. doi: 10.1117/1.jbo.29.s3.s33305

Ahmed, T., Powner, M. B. ORCID: 0000-0003-4913-1004, Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2024). Colorimetric Determination of Salivary Cortisol Levels in Artificial Saliva for the Development of a Portable Colorimetric Sensor (Salitrack). Sci, 6(2), article number 20. doi: 10.3390/sci6020020

Gidado, I. M., Nwokoye, I. I., Triantis, I. F. ORCID: 0000-0002-8900-781X , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2024). Multi-Modal Spectroscopic Assessment of Skin Hydration. Sensors, 24(5), article number 1419. doi: 10.3390/s24051419

Gidado, I., Al-Halawani, R., Qassem, M. & Kyriacou, P. ORCID: 0000-0002-2868-485Xview all authors (2024). Development and Analysis of a Multi-Wavelength Near-Infrared Sensor for Monitoring Skin Hydration and Validation Using Monte Carlo Simulation. Photonic Sensors, 14(3), article number 240306. doi: 10.1007/s13320-024-0719-z

Al-Halawani, R., Charlton, P. H., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2023). A review of the effect of skin pigmentation on pulse oximeter accuracy. Physiological Measurement, 44(5), article number 05TR01. doi: 10.1088/1361-6579/acd51a

Sheikh, M., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2023). Optical determination of lithium therapeutic levels in micro‐volumes of interstitial fluid. Bipolar Disorders, 25(2), pp. 136-147. doi: 10.1111/bdi.13291

Paprocki, S., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2023). The Impact of Acetic Acid on Measuring Ethanol Concentrations in Water and Human Serum Using Short-Wave Infrared Spectroscopy. International Journal of Molecular Sciences, 24(3), article number 2980. doi: 10.3390/ijms24032980

Sheikh, M., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2023). A paper-based colorimetric method for monitoring of lithium therapeutic levels. Analytical Methods, 15(7), pp. 979-986. doi: 10.1039/d2ay01743a

Ahmed, T. ORCID: 0000-0001-5760-1964, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2023). Measuring stress: a review of the current cortisol and dehydroepiandrosterone (DHEA) measurement techniques and considerations for the future of mental health monitoring. Stress, 26(1), pp. 29-42. doi: 10.1080/10253890.2022.2164187

Gidado, I. M., Qassem, M., Triantis, I. F. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2022). Review of Advances in the Measurement of Skin Hydration Based on Sensing of Optical and Electrical Tissue Properties. Sensors, 22(19), article number 7151. doi: 10.3390/s22197151

Paprocki, S., Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2022). Review of Ethanol Intoxication Sensing Technologies and Techniques. Sensors, 22(18), article number 6819. doi: 10.3390/s22186819

Ahmed, T., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2022). Physiological monitoring of stress and major depression: A review of the current monitoring techniques and considerations for the future. Biomedical Signal Processing and Control, 75, article number 103591. doi: 10.1016/j.bspc.2022.103591

Sheikh, M., Qassem, M., Triantis, I. F. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2022). Advances in Therapeutic Monitoring of Lithium in the Management of Bipolar Disorder. Sensors, 22(3), article number 736. doi: 10.3390/s22030736

Baishya, N. ORCID: 0000-0002-2231-6132, Mamouei, M. H., Budidha, K. , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). In-vitro spectrometric analysis of hyperlactatemia and lactic acidosis in buffer relating to sepsis. Journal of Near Infrared Spectroscopy, 29(1), pp. 53-59. doi: 10.1177/0967033520968951

Baishya, N., Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Comparison of Dual Beam Dispersive and FTNIR Spectroscopy for Lactate Detection. Sensors, 21(5), article number 1891. doi: 10.3390/s21051891

Mamouei, M. H., Chatterjee, S. ORCID: 0000-0002-7735-6123, Razban, M. , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Design and Analysis of a Continuous and Non-Invasive Multi-Wavelength Optical Sensor for Measurement of Dermal Water Content. Sensors, 21(6), pp. 4353-4356. doi: 10.3390/s21062162

Chatterjee, S., Budidha, K. ORCID: 0000-0002-6329-8399, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). In-silico investigation towards the non-invasive optical detection of blood lactate. Scientific Reports, 11(1), article number 14274. doi: 10.1038/s41598-021-92803-x

Sheikh, M., Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2021). Wearable, Environmental, and Smartphone-Based Passive Sensing for Mental Health Monitoring. Frontiers in Digital Health, 3, article number 662811. doi: 10.3389/fdgth.2021.662811

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). An empirical investigation of deviations from the Beer-Lambert law in optical estimation of lactate. Scientific Reports, 11(1), article number 13734. doi: 10.1038/s41598-021-92850-4

Baishya, N., Momouei, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Near infrared spectrometric investigation of lactate in a varying pH buffer. Journal of Near Infrared Spectroscopy, 28(5-6), pp. 328-333. doi: 10.1177/0967033520905374

Baishya, N., Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Investigations into the Effects of pH on Quantitative Measurements of Lactate in Biological Media Using ATR-FTIR Spectroscopy. Molecules, 25(16), pp. 228-232. doi: 10.3390/molecules25163695

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Comparison of wavelength selection methods for in-vitro estimation of lactate: a new unconstrained, genetic algorithm-based wavelength selection. Scientific Reports, 10(1), article number 16905. doi: 10.1038/s41598-020-73406-4

Budidha, K. ORCID: 0000-0002-6329-8399, Mamouei, M. H., Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Identification and Quantitative Determination of Lactate Using Optical Spectroscopy—Towards a Noninvasive Tool for Early Recognition of Sepsis. Sensors, 20(18), article number 5402. doi: 10.3390/s20185402

Mamouei, M. H., Qassem, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Baishya, N., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). Comparison of a Genetic Algorithm Variable Selection and Interval Partial Least Squares for quantitative analysis of lactate in PBS. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3239-3242. doi: 10.1109/embc.2019.8856765

Baishya, N., Budidha, K. ORCID: 0000-0002-6329-8399, Mamouei, M. H. , Qassem, M., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). Near Infrared Spectrometric Investigations on the behaviour of Lactate. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 5769-5772. doi: 10.1109/embc.2019.8857833

Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2019). Review of Modern Techniques for the Assessment of Skin Hydration. Cosmetics, 6(1), article number 19. doi: 10.3390/cosmetics6010019

Qassem, M. ORCID: 0000-0003-0730-3189, Constantinou, L., Triantis, I. ORCID: 0000-0002-8900-781X , Hickey, M., Palazidou, E. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). A Method for Rapid, Reliable, and Low-Volume Measurement of Lithium in Blood for Use in Bipolar Disorder Treatment Management. IEEE Transactions on Biomedical Engineering, 66(1), pp. 130-137. doi: 10.1109/tbme.2018.2836148

Qassem, M., Triantis, I. ORCID: 0000-0002-8900-781X, Hickey, M. , Palazidou, E. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2018). Methodology for rapid assessment of blood lithium levels in ultramicro volumes of blood plasma for applications in personal monitoring of patients with bipolar mood disorder. Journal of Biomedical Optics (JBO), 23(10), article number 107004. doi: 10.1117/1.jbo.23.10.107004

Qassem, M., Hickey, M. & Kyriacou, P. A. (2016). Colorimetric determinations of lithium levels in drop-volumes of human plasma for monitoring patients with bipolar mood disorder. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, 2016, doi: 10.1109/EMBC.2016.7591889

Qassem, M. & Kyriacou, P. A. (2014). Use of reflectance near-infrared spectroscopy to investigate the effects of daily moisturizer application on skin optical response and barrier function. Journal of Biomedical Optics, 19(8), article number 087007. doi: 10.1117/1.jbo.19.8.087007

Qassem, M. & Kyriacou, P. A. (2014). Effectiveness of the DreamSkin (R) garment on relieving symptoms of Eczema/Dermatitis using electrical and spectroscopic methods: a case study. 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3723-3726. doi: 10.1109/EMBC.2014.6944432

Qassem, M. & Kyriacou, P. A. (2014). Investigating skin barrier function utilizing reflectance NIR Spectroscopy. 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2014, pp. 3735-3738. doi: 10.1109/embc.2014.6944435

Qassem, M. & Kyriacou, P. A. (2013). Comparing the rates of absorption and weight loss during a desorption test using near infrared spectroscopy. Skin Research and Technology, 19(2), pp. 137-144. doi: 10.1111/srt.12024

Qassem, M. & Kyriacou, P. A. (2012). In vitro spectrophotometric near infrared measurements of skin absorption and dehydration. Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society., 2012, pp. 6044-6047. doi: 10.1109/EMBC.2012.6347372

Conference or Workshop Item

Sheikh, M., Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2022). Optical Detection of Lithium Therapeutic Levels in Porcine Interstitial Fluid Collected Using a Hollow Microneedle. In: 2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 11-15 Jul 2022, Glasgow, Scotland, United Kingdom. doi: 10.1109/EMBC48229.2022.9871289

Baishya, N., Mamouei, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). In-vivo quantification of lactate using Near Infrared reflectance spectroscopy. In: 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 1-5 Nov 2021, Mexico. doi: 10.1109/EMBC46164.2021.9630235

Budidha, K. ORCID: 0000-0002-6329-8399, Chatterjee, S., Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Monte Carlo Characterization of Short-Wave Infrared Optical Wavelengths for Biosensing Applications. In: 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 1-5 Nov 2021, Mexico. doi: 10.1109/EMBC46164.2021.9630061

Sheikh, M., Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2021). Optical Determination of Lithium Levels in Artificial Interstitial Fluid for Treatment Management of Bipolar Disorder. In: 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 1-5 Nov 2021, Mexico. doi: 10.1109/EMBC46164.2021.9630680

Mamouei, M., Qassem, M. ORCID: 0000-0003-0730-3189, Razban, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Measurement of dermal water content using a multi-wavelength optical sensor. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). doi: 10.1109/EMBC44109.2020.9176619

Baishya, N. ORCID: 0000-0002-2231-6132, Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Near Infrared and Aquaphotomic analysis of water absorption in lactate containing media. In: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 20-24 Jul 2020, Online. doi: 10.1109/EMBC44109.2020.9176675

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). The efficacy of support vector machines in modelling deviations from the Beer-Lambert law for optical measurement of lactate. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 20-24 Jul 2020, Online. doi: 10.1109/EMBC44109.2020.9175215

Qassem, M. & Kyriacou, P. A. (2013). In vivo optical investigation of short term skin water contact and moisturizer application using NIR spectroscopy. In: Conf Proc IEEE Eng Med Biol Soc. Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE, 3 July - 7 July 2013, Osaka. doi: 10.1109/EMBC.2013.6610020

Qassem, M. & Kyriacou, P. A. (2013). In vivo optical investigation of short term skin water contact and moisturizer application using NIR spectroscopy. Paper presented at the 35th Annual International Conference of the IEEE Engineering-in-Medicine-and-Biology-Society (EMBS), 2013, 03-07-2013 - 07-07-2013, Osaka, Japan. doi: 10.1109/EMBC.2013.6610020

Other

Mamouei, M., Chatterjee, S., Razban, M. , Qassem, M. & Kyriacou, P. ORCID: 0000-0002-2868-485Xview all authors (2021). Design and analysis of a continuous and non-invasive multi-wavelength optical sensor for measurement of dermal water content. Basel, Switzerland. doi: 10.20944/preprints202102.0414.v1