Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 14 of 14
Full-Text Articles in Entire DC Network
Early Agriculture In The Maya Lowlands, Mary D. Pohl, Kevin O. Pope, John G. Jones, John S. Jacob, Dolores R. Piperno, Susan D. Defrance, David L. Lentz, John A. Gifford, Marie E. Danforth, J. Kathryn Josserand
Early Agriculture In The Maya Lowlands, Mary D. Pohl, Kevin O. Pope, John G. Jones, John S. Jacob, Dolores R. Piperno, Susan D. Defrance, David L. Lentz, John A. Gifford, Marie E. Danforth, J. Kathryn Josserand
Faculty Publications
Wetland research in northern Belize provides the earliest evidence for development of agriculture in the Maya Lowlands. Pollen data confirm the introduction of maize and manioc before 3000 B.C. Dramatic deforestation, beginning ca. 2500 B.C. and intensifying in wetland environments ca. 1500-1300 B.C., marks an expansion of agriculture, which occurred in the context of a mixed foraging economy. By 1000 B.C. a rise in groundwater levels led farmers to construct drainage ditches coeval with the emergence of Maya complex society ca. 1000-400 B.C. Field manipulations often involved minor modifications of natural hummocks. Canal systems are not as extensive in northern …
Inhomogeneity In Gelation And Nonuniversality Of Sol-To-Gel Transitions Studied By A Computer Simulation Model, Yi-Min Liu, R.B. Pandey
Inhomogeneity In Gelation And Nonuniversality Of Sol-To-Gel Transitions Studied By A Computer Simulation Model, Yi-Min Liu, R.B. Pandey
Faculty Publications
No abstract provided.
Shakespeare's Christian Dimension: An Anthology Of Commentary, James H. Sims
Shakespeare's Christian Dimension: An Anthology Of Commentary, James H. Sims
Faculty Publications
No abstract provided.
Ancient Peoples And Landscapes, H. Edwin Jackson
Ancient Peoples And Landscapes, H. Edwin Jackson
Faculty Publications
No abstract provided.
A Reexamination Of Balassa's Productivity Bias Hypothesis, Mohsen Bahmani Oskooee, Farhang Niroomand
A Reexamination Of Balassa's Productivity Bias Hypothesis, Mohsen Bahmani Oskooee, Farhang Niroomand
Faculty Publications
No abstract provided.
Infinite Period And Hopf Bifurcations For The Ph-Regulated Oscillations In A Semibatch Reactor (H2O2-Cu2+-S2O2-3-–Naoh System), Peter E. Strizhak, John A. Pojman
Infinite Period And Hopf Bifurcations For The Ph-Regulated Oscillations In A Semibatch Reactor (H2O2-Cu2+-S2O2-3-–Naoh System), Peter E. Strizhak, John A. Pojman
Faculty Publications
Dynamic behavior of the pH‐regulated oscillations has been studied for the hydrogen peroxide oxidation of thiosulfate ions in the presence of trace amounts of copper(II) ions in a semibatch reactor. A solution of 0.08 M Na2S2O3 and 0.112 M NaOH was flowed at 0.160 mL/min into 300 mL of solution containing the H2O2 and Cu2+ in a vessel. There exists a critical value of the H2O2 or Cu2+ concentrations below which the system does not oscillate. The oscillations appear due to an infinite period bifurcation at …
Kinetics And Jamming Coverage In A Random Sequential Adsorption Of Polymer Chains, Jian-Sheng Wang, Ras B. Pandey
Kinetics And Jamming Coverage In A Random Sequential Adsorption Of Polymer Chains, Jian-Sheng Wang, Ras B. Pandey
Faculty Publications
No abstract provided.
Formation Of Risk Beliefs, Joint Production And Willingness To Pay To Avoid Skin Cancer, Mark Dickie, Shelby Gerking
Formation Of Risk Beliefs, Joint Production And Willingness To Pay To Avoid Skin Cancer, Mark Dickie, Shelby Gerking
Faculty Publications
No abstract provided.
Sol-Gel Phase Transitions In Thermoreversible Gels: Onset Of Gelation And Melting, Y. Liu, R.B. Pandey
Sol-Gel Phase Transitions In Thermoreversible Gels: Onset Of Gelation And Melting, Y. Liu, R.B. Pandey
Faculty Publications
A Monte Carlo simulation model is propsed to study the phase transition and the structural evolution of thermoreversible gels with the coexistence of phase separation and gelation processes. Our model includes the mobility of all the species and the reversibilty of bonds of the clusters formed due to cross-linking reactions. These features provide a more realistic depiction of a polymer-solvent system. We attempt to elucidate the effects of interactions, solvents, polymer fraction, etc. on the phase behaviors of the thermoreversible gel. Sol-to-gel transition is studied in detail as a function of temperature, and the related critical exponents are evaluated. Two …
Morphometry Of Juvenile And Subadult Loligo Pealei And L. Plei From The Northern Gulf Of Mexico, Guillermo Sánchez, Harriet M. Perry, Christine B. Trigg, Michael Vecchione, Clyde Roper, Patricia M. Biesot
Morphometry Of Juvenile And Subadult Loligo Pealei And L. Plei From The Northern Gulf Of Mexico, Guillermo Sánchez, Harriet M. Perry, Christine B. Trigg, Michael Vecchione, Clyde Roper, Patricia M. Biesot
Faculty Publications
Two species of Loligo are abundant in northern Gulf waters: the long-finned squid, Loligo pealei. and the arrow squid, Loligo plei. Variability within species and similarities between the species often hamper accurate identification. The two species more closely resemble each other in areas of sympatry. and there is overlap in almost all of the diagnostic characters. Small specimens of Loligo are not easily identified. and there are few studies detailing their morphometry. Because of the taxonomic uncertainties associated with the identification of juveniles and subadults of L. pealei and L. plei, the species were differentiated by isoelectric …
Archaeology Of Precolumbian Florida, Jon Sensbach
Archaeology Of Precolumbian Florida, Jon Sensbach
Faculty Publications
No abstract provided.
Dynamics And Conformation Of Polymer Chains In A Porous Medium, Grace M. Foo, R.B. Pandey, D. Stauffer
Dynamics And Conformation Of Polymer Chains In A Porous Medium, Grace M. Foo, R.B. Pandey, D. Stauffer
Faculty Publications
No abstract provided.
The Conscription Of Fashion - Utility Cloth, Clothing, And Footwear, 1941-1952, L. Margaret Barnett
The Conscription Of Fashion - Utility Cloth, Clothing, And Footwear, 1941-1952, L. Margaret Barnett
Faculty Publications
No abstract provided.
Community And The Economy: The Theory Of Public Cooperation, Mark A. Klinedinst
Community And The Economy: The Theory Of Public Cooperation, Mark A. Klinedinst
Faculty Publications
No abstract provided.