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Isotope Fingerprints

By Guest PostMarch 8, 2013Sciencealgae blooms, chemical elements, chesapeake bay, conflow, deb jaisi, DNA, ebl, ecological problems, eutrophication, irms, isotope fingerprints, isotope ratio, isotopic composition, mass spectrometer, mid atlantic, non terrestrial, oxygen deficiency, phosphate, phosphate oxygen isotopes, phosphorus, phosphorus backbone, phosphorus fraction, phosphorus rich fertilizer, phosphorus sources, rna, sediments, stable isotope facility, synchronizing unit, university of delaware, usda, water quality

Jaisi laboratory tracks chemicals in water, farmland throughout Mid-Atlantic

University of Delaware researcher Deb Jaisi is using his newly established stable isotope facility in the Environmental Biogeochemistry Laboratory (EBL) to find the fingerprints of isotopes in chemical elements — specifically phosphorus — in order to track sources of nutrients in the environmentally-sensitive Chesapeake Bay, other bodies of water and farmland throughout the Mid-Atlantic.

Jaisi, assistant professor in the Department of Plant and Soil Sciences in the College of Agriculture and Natural Resources, explained that he and his research team are currently working on many projects in the EBL, including two that are funded through seed grants, one focusing on terrestrial phosphorus sources and the other on marine phosphorus sources in the Chesapeake. One of those grants is from the UD Research Foundation (UDRF) and is titled “Role of Non-terrestrial Phosphorus Sources in Eutrophication in the Chesapeake Bay.” (more…)

Researcher Aims to Improve Effectiveness of Radiation Therapy for Cancer

By Guest PostMarch 7, 20112 commentsHealth, Scienceanticancer drugs, biology of tumor cells, cancer therapy, cancer treatment, characterize the tumors, chemotherapy, ct, diabetes, heart attacks, hypoxia, hypoxia induced pathways, hypoxic cells, localiz, malignant cells, methods for imaging tumors, microscopic tumors, mri, oxygen deficiency, oxygen deficiency in tissues, PET, pharmacology, radiation, sara rockwell, stroke, therapeutic radiology, yale

Sara Rockwell is a leader in her field. A professor of therapeutic radiology and pharmacology at the School of Medicine, Rockwell was among the first researchers to study the effects of oxygen deficiency on the response of malignant cells to radiation and anticancer drugs, and was among the first to consider the implications of this deficiency in microscopic tumors for the development of solid malignancies.

Rockwell, who is also associate dean for scientific affairs, joined the faculty of Yale School of Medicine in 1974, and teaches radiation biology, pharmacology, cancer biology, ethics and career development skills. She earned her bachelor’s degree in physics from Penn State University in 1965. She went on to earn her doctorate degree in biophysics from Stanford University in 1971. (more…)

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Isotope Fingerprints

Researcher Aims to Improve Effectiveness of Radiation Therapy for Cancer