Stanford University
Showing 6,181-6,190 of 7,777 Results
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George Segall
Professor of Radiology, Emeritus
Current Research and Scholarly InterestsScintigraphic evaluation of coronary blood flow and myocardial function using single photon emission computed tomography (SPECT) and positron emission tomography (PET). Tumor imaging and characterization of pulmonary nodules with PET/CT.
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Paul Segall
The Cecil H. and Ida M. Green Professor of Geophysics
Current Research and Scholarly InterestsResearch
I study active earthquake and volcanic process through data collection, inversion, and theoretical modeling. Using methods such as precise Global Positioning System (GPS) positioning and Interferometric Synthetic Aperture Radar (InSAR) we are able to measure deformation in space and time and invert these data for the geometry of faults and magma chambers, and spatiotemporal variations in fault slip-rate and magma chamber dilation. The accumulation of shear strain in tectonic regions provides a direct measure of earthquake potential. Similarly, magma accumulation in the crust prior to eruptions causes measurable inflation. We use these data to develop and test models of active plate boundaries such as the San Andreas, and the Cascade and Japanese subduction zones, the nucleation of earthquakes, slow slip events, induced seismicity, and the physics of magma migration leading to volcanic eruptions. These physics-based models rely on principles and methodologies from solid and fluid dynamics.
Teaching
I teach introductory undergraduate classes in natural hazards and the prediction of volcanic eruptions, as well as graduate level courses on modeling earthquake and volcano deformation and geophysical inverse theory.
Professional Activities
James B. Macelwane Medal, American Geophysical Union (1990); fellow, American Geophysical Union (1990); fellow, Geological Society of America (1997); president, Tectonophysics Section, AGU (2002-04); U.S.G.S. Science of Earthquakes Advisory Committee (2002-06); California Earthquake Prediction Evaluation Committee (2003-07); chair, Plate Boundary Observatory Steering Committee (2003-06); N.S.F. Panel, Instruments and Facilities Program (1997-2000); associate editor, Journal of Geophysical Research (1984-87). William Smith Lecturer, Geological Society of London (2011). Charles A. Whitten Medal, American Geophysical Union (2014), National Academy of Sciences (2016) -
Niraj Sehgal
Clinical Professor, Medicine
Current Research and Scholarly InterestsQuality Improvement & Patient Safety, Teamwork & Communication, Leadership
Development, Organizational Culture & Change -
Carolyn Dacey Seib, MD, MAS
Associate Professor of Surgery (General Surgery)
BioDr. Carolyn Dacey Seib is a fellowship-trained endocrine surgeon and board-certified general surgeon who specializes in surgery of the thyroid, parathyroid, and adrenal glands. In 2025, she was among the first surgeons in the United States to earn a Focused Practice Designation in Complex Thyroid and Parathyroid Surgery from the American Board of Surgery, reflecting her expertise in these procedures and related patient management.
Dr. Seib provides comprehensive and personalized care for patients with thyroid, parathyroid, and adrenal disorders, including thyroid cancer, hyperthyroidism, primary hyperparathyroidism, primary aldosteronism, autonomous cortisol secretion, and pheochromocytomas. Her approach combines advanced surgical techniques with a focus on patient-centered outcomes, ensuring that each treatment plan is tailored to the individual.
In addition to her clinical practice, Dr. Seib is an NIH-funded researcher whose work focuses on optimizing surgical decision-making and outcomes for patients with endocrine disorders. She has received research support from the National Institute on Aging and the American Thyroid Association, and her studies have been published in leading peer-reviewed journals and featured in national media, including The New York Times.
Dr. Seib completed her undergraduate education at Princeton University (summa cum laude), earned her medical degree from the New York University School of Medicine, and completed her general surgery residency and endocrine surgery fellowship at the University of California, San Francisco (UCSF). -
Samuel Seidel
Adjunct Professor
BioSam is the K12 Lab Director of Strategy + Research at the Stanford d.school, and co-author of Creative Hustle (Ten Speed Press, 2022), Changing the Conversation About School Safety (Stanford d.school, 2022), Hip Hop Genius 2.0 (Rowman & Littlefield, 2022), and Hip Hop Genius: Remixing High School Education (Rowman & Littlefield, 2011).
He speaks internationally about education, race, culture, systems, and design.
Sam graduated from Brown University with a degree in Education and a teaching certification, was a Visiting Practitioner at Harvard Graduate School of Education, a Scholar-in-Residence at Columbia University's Institute for Urban and Minority Education, and a Community Fellow at the Rhode Island School of Design. -
Zachary M. Sellers, MD, PhD
Adjunct Professor, Pediatrics - Gastroenterology
BioDr. Sellers is a pediatric physician-scientist and research and clinical development consultant. As a pediatric gastroenterologist and ion channel physiologist, Dr. Sellers' work in academia and pharma over the last 20 years has focused on improving the lives of individuals with complex and rare diseases through providing cutting-edge clinical care and advancing research and drug development. Dr. Sellers previously led a basic and translational research laboratory at Stanford, focused on epithelial ion transport and acid-base regulation using a variety of human and animal models. He is a firm believer in the exponential impact of team science and is adept working in multi-disciplinary and cross-functional teams. He seeks out strategic partnerships and opportunities that can leverage his expertise and leadership to advance innovative therapies for areas of high unmet need and to support the development of the next generation of physician-scientists. Dr. Sellers received his BS (Animal Physiology and Neuroscience) and BA (Japanese Studies) from the University of California. San Diego, his MD and PhD (Molecular and Integrative Physiology) from the University of Illinois at Urbana-Champaign, and was trained in Pediatrics and Pediatric Gastroenterology, Hepatology, and Nutrition at Stanford, where he was previously a faculty member and attending physician. He held multiple leadership positions at Stanford, including Associate Chief of Research in Gastroenterology, Director of the Stanford Children's Pancreas Program, Lead Gastroenterologist for the CF Program, Director of the CFTR Phenotyping and Theratyping Program, and Physician-Scientist Advisor for the Pediatrics Residency Program.
