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Dr. Ryan Mathur

Transition from Surface to Shaft mining in Copper and Bronze Age Serbia

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Copper isotopes behave differently in near-surface environments than in non-weathering environments found deeper in the earth. By sampling copper isotopes (63 and 65) in metal artifacts from Copper and Bronze Age Serbia, Dr. Mathur and his colleagues discovered the approximate time that people of this region were introduced to shaft mining, a technique already in practice in the middle east. Soon to be published in the Journal of Archaeological Science.

Kelly Finan/Ryan Mathur
medical illustration of Shows downward leaching of copper isotope in U.S. southwest with implications for mining. Published in Elements journal of geology, 2015.
medical illustration of The sagebrush steppe in Oregon, including cheatgrass (Bromus tectorum), western juniper (Juniperus occidentalis), greater sage-grouse (Centrocercus urophasianus), pronghorn (Antilocapra americana), indian paintbrush (Castilleja sp.), lupine (Lupinus sp.), squirreltail (Elymus elymoides), Sandberg's bluegrass (Pos secunda), bluebunch wheatgrass (Pseudoroegneria spicata), western bluebirds (Sialia mexicana), sagebrush (Artemisia tridentata), and a golden eagle (Aquila chrysaetos).
medical illustration of Oregon sagebrush steppe landscape cutaway explaining how different management units might be mapped differently by land managers depending on their objectives. In this case, western juniper (Juniperus occidentalis) and invasive annual grasses are mapped differently based on different objectives.
medical illustration of Functional groups of plants useful when mapping landscape quality. Includes bunchgrasses, perennial forbs, annual forbs, annual grasses, sagebrush, and conifers. Examples include desert alyssum, sandberg's bluegrass, bluebunch wheatgrass, balsamroot, cheatgrass, and common juniper.
medical illustration of Top: adult zebrafish, middle: normal embryonic zebrafish (not to scale with adult), bottom: reptin mutant embryonic zebrafish. Reptin is a protein normally associated with tumor repression, but might also be linked to organs regrowth in these little guys.
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icthyology watercolor zebra fish danio aquarium fish embryo
medical illustration of Copper isotopes behave differently in near-surface environments than in non-weathering environments found deeper in the earth. By sampling copper isotopes (63 and 65) in metal artifacts from Copper and Bronze Age Serbia, Dr. Mathur and his colleagues discovered the approximate time that people of this region were introduced to shaft mining, a technique already in practice in the middle east.

Soon to be published in the Journal of Archaeological Science.
medical illustration of Where limestone is intruded by igneous rock, copper isotope values are highest near the intrusion. However, where non-calciferous rock is intruded by igneous rock, copper isotope values are lower near the intrusion. Geology; geologic cross-section.
medical illustration of Shows locations of increased copper 85 isotope in geologic cross-section. Geology, igneus, sedimentary, bedrock, basement rock, metamorphic, pluton
medical illustration of 3-D reconstruction of an 1850 landscape to aid in a land trust's conservation efforts. Displayed in a local history museum.
medical illustration of Velvet grass plant, an invasive species in Yosemite National Park, with detailed view of ligule.
medical illustration of The Frackbox is an air monitoring tool developed by Citizen Sense. It is used to detect volatile organic compounds and ultrafine particles as well as wind speed and direction near hydraulic fracturing (fracking) infrastructure.
medical illustration of Cell membrane with transport proteins.
medical illustration of Shows transfer of energy to change water from solid (ice) to liquid and gas (steam).
medical illustration of As a liquid (water) is forced through a smaller space (area of smaller diameter), its velocity increases.
medical illustration of Show the difference between the humeral spots on Astyanax aneus and Astyanax orthodus, Costa Rican freshwater fish, for a taxonomic key.  Mancha humeral, peces de Costa Rica.
medical illustration of Shows contrast between lateral line (linea lateral) on two Costa Rican freshwater fish species: Pomadasys crocro and Astatheros sp. for a taxonomic key.
medical illustration of Shows protractile (extendable) mouth in Costa Rican freshwater fish species Eucinostomus sp.
medical illustration of American mastodon paleontology reconstruction showing skeleton.
medical illustration of Installation of Turtle Excluder Device (TED) into a crab pot. Designed to keep diamondback terrapins out of crab traps in the Chesapeake Bay.
medical illustration of Artwork for a simulation in which the student adjusts the light and carbon dioxide experienced by a plant in a beaker to see how these changes impact the quantity of oxygen produced by the plant.
medical illustration of A general diagram of a virus replicating itself within a cell.
medical illustration of The illustration shown here uses a reporter system that binds to an enzyme when the PCR product complements the probe sequence. A color change is seen when the enzyme substrate is supplied; if the PCR product does not complement the probe sequence, then no color develops.  Alternatively, fluorescent or luminescent reporter systems may be used.
medical illustration of Color, Publishing, Technology, Allergy / Immunology, Virology
medical illustration of Chart showing an animal pest, a bacterium, a virus, and cancer and comparing the agents used against them as well as the selectivity of the agents.
medical illustration of Chart showing virus morphology, genome size, and genome type for the following viruses: poxviridae, herpesviridae, adenoviridae, parvoviridae, picornaviridae, retroviridae, togaviridae, flaviviridae, rhabdoviridae, paramyxoviridae, siphoviridae.
medical illustration of Mycological/fungus illustration showing three species of the mushroom genus Hygrocybe growing on the floor of a redwood forest.
medical illustration of Rainbow trout (Oncorynchus mykiss) in scratchboard.
medical illustration of Blue-footed boobies (Sula nebouxii) performing a mating dance. Ornithology; birds; scratchboard.
medical illustration of Children's illustration. Jockeys riding seahorses at a race. Scratchboard.
medical illustration of Scratchboard image of the nest of an American Robin: Turdus migratorius. Ornithology; bird

Profile

Kelly holds an MS in plant biology from University of Vermont and a master's certificate in science illustration from University of California Extension Santa Cruz. She is an avid birder and in addition to ornithology, her favorite subjects are ecology and geology. She is a joy to work with and never misses a deadline.

Style/Techniques

Black & White, Cartoon, Color, Information Graphics, Line, Line with Color

Subject/Specialties

Allergy / Immunology, Biology, Biotechnology, Botany, Cell biology / Histology, Embryology, Molecular Biology, Natural History, Natural Science / Nature, Virology, Zoology, Oncology, Mechanism of Action (MOA)