Karlis Berzins

Karlis Berzins

Research assistant

ORCID: 0000-0001-6545-5522

Publication year:
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1 - 33 out of 33Page size: 50
  1. 2024
  2. Published

    In Operando Analysis of Milk-Based Oral Formulations during Digestion Using Synchrotron Small-Angle X-ray Scattering Coupled to Low-Frequency Raman Spectroscopy

    Bērziņš, Kārlis, Meiland, Peter, Aljabbari, Anas Samir Mohammad & Boyd, Ben, 2024, In: Analytical Chemistry. 96, 2, p. 887-894

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. E-pub ahead of print

    In Situ Imaging of Subcutaneous Drug Delivery Systems Using Microspatially Offset Low-Frequency Raman Spectroscopy

    Bērziņš, Kārlis, Czyrski, Grzegorz Sebastian, Aljabbari, Anas Samir Mohammad, Heinz, Andrea & Boyd, Ben, 2024, (E-pub ahead of print) In: Analytical Chemistry.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. 2023
  5. Published

    An Exploration of Mineral Density, Elemental and Chemical Composition of Primary Teeth in Relation to Cord-Blood Vitamin D, Using Laboratory Analysis Techniques

    Beckett, D. M., Vaz Viegas, S., Broadbent, J. M., Wheeler, B. J., Bērziņš, Kārlis, Fraser-Miller, S. J., Gordon, K. C., Drummond, B. K., Mahoney, E. K. & Loch, C., 2023, In: Journal of Bone and Mineral Research. 38, 12, p. 1846-1855

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Application of Low-Frequency Raman Spectroscopy to Probe Dynamics of Lipid Mesophase Transformations upon Hydration

    Krog, Lasse Skjoldborg, Kirkensgaard, Jacob Judas Kain, Foderà, Vito, Boyd, Ben & Bērziņš, Kārlis, 2023, In: Journal of Physical Chemistry B. 127, 14, p. 3223-3230

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Comparison of Low-, Mid-, and High-Frequency Raman Spectroscopy for an In Situ Kinetic Analysis of Lipid Polymorphic Transformations

    Pasquarella, C., Bertoni, S., Passerini, N., Boyd, Ben & Bērziņš, Kārlis, 2023, In: Crystal Growth and Design. 23, 11, p. 7947–7957

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Exploring the Solid-State Landscape of Carbamazepine during Dehydration: A Low Frequency Raman Spectroscopy Perspective

    Remoto, P. I. I. I. J. G., Bērziņš, Kārlis, Fraser-Miller, S. J., Korter, T. M., Rades, Thomas, Rantanen, Jukka & Gordon, K. C., 2023, In: Pharmaceutics. 15, 5, 15 p., 1526.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    In Situ Monitoring of Drug Precipitation from Digesting Lipid Formulations Using Low-Frequency Raman Scattering Spectroscopy

    Salim, M., Fraser-Miller, S. J., Bērziņš, Kārlis, Sutton, J. J., Gordon, K. C. & Boyd, Ben, 2023, In: Pharmaceutics. 15, 7, 13 p., 1968.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    The Influence of Gastrointestinal Biomolecules on Solid-State Transformations in Pharmaceutical Particulates

    Aljabbari, Anas Samir Mohammad, Kihara, Shinji, Rades, Thomas, Boyd, Ben & Bērziņš, Kārlis, 2023, In: Molecular Pharmaceutics. 20, 8, p. 4297-4306

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. 2022
  12. Published

    Elucidating the Dehydration Mechanism of Nitrofurantoin Monohydrate II Using Low-Frequency Raman Spectroscopy

    Remoto, P. J. G., Bērziņš, Kārlis, Fraser-Miller, S. J., Korter, T. M., Rades, Thomas, Rantanen, Jukka & Gordon, K. C., 2022, In: Crystal Growth and Design. 22, 4, p. 2733-2741

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Evaluating Spatially Offset Low-Frequency Anti-Stokes Raman Spectroscopy (SOLFARS) for Detecting Subsurface Composition below an Emissive Layer: A Proof of Principle Study Using a Model Bilayer System

    Bērziņš, Kārlis, Mapley, J. I., Gordon, K. C. & Fraser-Miller, S. J., 2022, In: Molecular Pharmaceutics. 19, 11, p. 4311–4319

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Low-Frequency Raman Spectroscopy as an Avenue to Determine the Transition Temperature of β- and γ-Relaxation in Pharmaceutical Glasses

    Bērziņš, Kārlis, Fraser-Miller, S. J., Rades, Thomas & Gordon, K. C., 2022, In: Analytical Chemistry. 94, 23, p. 8241-8248

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Nondestructive Spatial Dehydration Analysis of Crystalline Hydrates in Pharmaceutical Solid Dosage Forms Using Spatially Offset Low-Frequency Raman Spectroscopy

    Bērziņš, Kārlis, Remoto, P. I. J. G., Fraser-Miller, S. J. & Gordon, K. C., 2022, In: Crystal Growth & Design. 22, 5, p. 2946–2953

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Optimization of methionine in inhalable High-dose Spray-dried amorphous composite particles using response surface Method, infrared and low frequency Raman spectroscopy

    Raj Adhikari, B., Bērziņš, Kārlis, Fraser-Miller, S. J., Cavallaro, A., Gordon, K. C. & Das, S. C., 2022, In: International Journal of Pharmaceutics. 614, 121446.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. 2021

  18. A New Frontier for Nondestructive Spatial Analysis of Pharmaceutical Solid Dosage Forms: Spatially Offset Low-Frequency Raman Spectroscopy

    Bērziņš, Kārlis, Fraser-Miller, S. J. & Gordon, K. C., 2021, In: Analytical Chemistry. 93, 8, p. 3698–3705

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Combined Effect of the Preparation Method and Compression on the Physical Stability and Dissolution Behavior of Melt-Quenched Amorphous Celecoxib

    Bērziņš, Kārlis, Fraser-Miller, S. J., Di, Rong, Liu, J., Peltonen, L., Strachan, C. J., Rades, Thomas & Gordon, K. C., 2021, In: Molecular Pharmaceutics. 18, 3, p. 1408-1418

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Investigation on Formulation Strategies to Mitigate Compression-Induced Destabilization in Supersaturated Celecoxib Amorphous Solid Dispersions

    Bērziņš, Kārlis, Fraser-Miller, S. J., Walker, G. F., Rades, Thomas & Gordon, K. C., 2021, In: Molecular Pharmaceutics. 18, 10, p. 3882–3893

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Monitoring the Isothermal Dehydration of Crystalline Hydrates Using Low-Frequency Raman Spectroscopy

    Robert, C., Fraser-Miller, S. J., Bērziņš, Kārlis, Okeyo, P. O., Rantanen, Jukka, Rades, Thomas & Gordon, K. C., 2021, In: Molecular Pharmaceutics. 18, 3, p. 1264-1276

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Pseudo-3D Subsurface Imaging of Pharmaceutical Solid Dosage Forms Using Micro-spatially Offset Low-Frequency Raman Spectroscopy

    Bērziņš, Kārlis, Fraser-Miller, S. J. & Gordon, K. C., 2021, In: Analytical Chemistry. 93, 25, p. 8986–8993

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Qualitative and quantitative vibrational spectroscopic analysis of macronutrients in breast milk

    Bērziņš, Kārlis, Harrison, S. D. L., Leong, C., Fraser-Miller, S. J., Harper, M. J., Diana, A., Gibson, R. S., Houghton, L. & Gordon, K. C., 2021, In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 246, 118982.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Recent advances in low-frequency Raman spectroscopy for pharmaceutical applications

    Bērziņš, Kārlis, Fraser-Miller, S. J. & Gordon, K. C., 2021, In: International Journal of Pharmaceutics. 592, 120034.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. 2020

  26. Co-Amorphization of Kanamycin with Amino Acids Improves Aerosolization

    Adhikari, B. R., Bērziņš, Kārlis, Fraser-Miller, S. J., Gordon, K. C. & Das, S. C., 2020, In: Pharmaceutics. 12, 8, 715.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Low-frequency raman scattering spectroscopy as an accessible approach to understand drug solubilization in milk-based formulations during digestion

    Salim, M., Fraser-Miller, S. J., Bērziņš, Kārlis, Sutton, J. J., Ramirez, G., Clulow, A. J., Hawley, A., Beilles, S., Gordon, K. C. & Boyd, B. J., 2020, In: Molecular Pharmaceutics. 17, 3, p. 885–899

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Low-wavenumber Raman spectral database of pharmaceutical excipients

    Bērziņš, Kārlis, Sales, R. E., Barnsley, J. E., Walker, G., Fraser-Miller, S. J. & Gordon, K. C., 2020, In: Vibrational Spectroscopy. 107, 103021.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Solving the Computational Puzzle: Toward a Pragmatic Pathway for Modeling Low-Energy Vibrational Modes of Pharmaceutical Crystals

    Bērziņš, Kārlis, Sutton, J. J., Fraser-Miller, S. J., Rades, Thomas, Korter, T. M. & Gordon, K. C., 2020, In: Crystal Growth & Design. 20, 10, p. 6947-6955

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. 2019

  31. Application of Low-Frequency Raman Scattering Spectroscopy to Probe in Situ Drug Solubilization in Milk during Digestion

    Salim, M., Fraser-Miller, S. J., Sutton, J. J., Bērziņš, Kārlis, Hawley, A., Clulow, A. J., Beilles, S., Gordon, K. C. & Boyd, Ben, 2019, In: Journal of Physical Chemistry Letters. 10, 9, p. 2258–2263

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Application of low‐wavenumber Raman spectroscopy to the analysis of human teeth

    Bērziņš, Kārlis, Sutton, J. J., Loch, C., Beckett, D., Wheeler, B. J., Drummond, B. K., Fraser‐Miller, S. J. & Gordon, K. C., 2019, In: Journal of Raman Spectroscopy. 50, 10, p. 1375-1387

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Low-Frequency Raman Spectroscopic Study on Compression-Induced Destabilization in Melt-Quenched Amorphous Celecoxib

    Bērziņš, Kārlis, Fraser-Miller, S. J., Rades, Thomas & Gordon, K. C., 2019, In: Molecular Pharmaceutics. 16, 8, p. 3678-3686 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Synthesis of some heptazine derivatives

    Krūkle-Bērziņa, K., Bērziņš, Kārlis & Shubin, K., 2019, In: Chemistry of Heterocyclic Compounds. 55, p. 1281–1284

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. 2018
  36. Published

    Compression-Induced Crystallization in Sucrose-Polyvinylpyrrolidone Amorphous Solid Dispersions

    Bērziņš, Kārlis & Suryanarayanan, R., 2018, In: Crystal Growth and Design.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Physical Stability and Dissolution Behavior of Ketoconazole-Organic Acid Coamorphous Systems

    Fung, M., Bērziņš, Kārlis & Suryanarayanan, R., 2018, In: Molecular Pharmaceutics.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. 2016
  39. Published

    Multi-technique approach for qualitative and quantitative characterization of furazidin degradation kinetics under alkaline conditions

    Bērziņš, Kārlis, Kons, A., Grante, I., Samodova-Sommer, Diana, Nakurte, I. & Actiņš, A., 2016, In: Journal of Pharmaceutical and Biomedical Analysis.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Solvates of Dasatinib: Diversity and Isostructurality

    Sarceviča, I., Grante, I., Belyakov, S., Rekis, T., Bērziņš, Kārlis, Actiņš, A. & Orola, L., 2016, In: Journal of Pharmaceutical Sciences.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. 2015
  42. Published

    The influence of pH on the stability of antazoline: kinetic analysis

    Bērziņš, Kārlis, Grante, I., Nakurte, I. & Actiņš, A., 2015, In: RSC Advances.

    Research output: Contribution to journal › Journal article › Research › peer-review

ID: 308436224