Stanford University


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  • Henk van Voorst

    Henk van Voorst

    Postdoctoral Scholar, Radiology

    BioDr. van Voorst is a postdoctoral scholar in Radiology studying the interfaces of artificial intelligence and neuroradiological imaging in stroke. Originally educated as an MD, Dr. van Voorst gained additional degrees in Finance and Data Science. As a PhD student, Dr. van Voorst focused on cost-effectiveness modeling and developed machine learning and deep learning algorithms with applications in acute ischemic stroke imaging. In his current research, Dr. van Voorst develops artificial intelligence algorithms to automatically extract information from arteries and veins in radiological stroke imaging.

  • Alun Vaughan Jackson

    Alun Vaughan Jackson

    Postdoctoral Scholar, Genetics

    BioCollaborative postdoctoral fellow between the groups of Prof. Michael Bassik (Stanford) and Dr Andreas Puschnik (CZ Biohub) interested in host-virus interactions with the innate immune system.

  • MANUEL RAFAEL VEJAR

    MANUEL RAFAEL VEJAR

    Postdoctoral Scholar, Photon Science, SLAC

    BioManuel (Manny) Vejar is a postdoctoral scholar at SLAC National Accelerator Laboratory, specializing in synchrotron X-ray fluorescence imaging and X-ray absorption spectroscopy to study environmental and rhizosphere biogeochemistry at the Stanford Synchrotron Radiation Lightsource.

    He received his Ph.D. in the Civil & Environmental Engineering & Earth Sciences department at the University of Notre Dame in 2024. His doctoral research focused on the impacts of iron-oxide mineral complexity on the fate and transport of plutonium in nuclear waste repository and/or legacy environmental contamination settings. Specifically, he studied the influence of Al-substitution in iron (oxyhydr)oxide minerals on the redox and speciation behavior of plutonium at the mineral-water interface, employing M4-edge high-energy resolution fluorescence-detected X-ray absorption near-edge structure (HERFD-XANES) spectroscopy to determine the oxidation state and L3-edge extended X-ray absorption fine-structure (EXAFS) spectroscopy to determine coordination environment of the plutonium associated with these minerals.

    He has over 7 years of experience with synchrotron techniques (micro-X-ray fluorescence imaging, XANES, and EXAFS), and their applications to study metal(loid)s in environmental systems. During his career, Manny has conducted work at the Stanford Synchrotron Radiation Lightsource, the Advanced Photon Source, and the European Synchrotron Radiation Facility, while collaborating with Chapman University, the Institute of Resource Ecology at the Helmholtz-Zentrum Dresden-Rossendorf, and more recently Oak Ridge, Pacific Northwest, and Livermore national labs, and the University of Puerto Rico in Mayaguez. Prior to his Ph.D. at the University of Notre Dame, Manny obtained his B.Sc. in Geology from the California State Polytechnic University, Pomona.