Digital Commons Network^™

Characterization Of Kraft Alkali Lignin And Products Of Its Thermal Degradation By Fractional Pyrolysis Methods, Keith Michael Voeller

Theses and Dissertations

At present, methods addressing the characterization of lignin and its decomposition products are limited. Typical approaches reported various spectroscopic, chromatographic and thermal methods. None of the methods is ideal for different reasons. In this study, a novel thermal carbon analysis (TCA) was developed providing essential mass balance data complementary to liquid-liquid extraction (LLE) prior to separation and identification by gas chromatography and mass spectrometry (GC-MS) as well as thermal desorption-pyrolysis-gas chromatography-mass spectrometry (TD-Py-GC-MS) to fully characterize lignin and its degradation products from hydrothermal treatment in subcritical water conditions.

The TCA method enabled a quantitative thermal evolution profile through TD and …

Troubled Waters Diana Nyad And The Birth Of The Global Rules Of Marathon Swimming, Hadar Aviram

Faculty Scholarship

No abstract provided.

Waiting For A Second Cargo Shipment: Public Education As A Great Equalizer Essays, Richard Delgado

Essays, Reviews, and Shorter Works

No abstract provided.

The Formation And Fate Of Internal Waves In The South China Sea, Matthew H. Alford, Thomas Peacock, Jennifer A. Mackinnon, Jonathan D. Nash, Maarten C. Buijsman, Luca A. Centurioni, Shenn-Yu Chao, Ming-Huei Chang, David M. Farmer, Oliver B. Fringer, Ke-Hsien Fu, Patrick C. Gallacher, Hans C. Graber, Karl R. Helfrich, Steven M. Jachec, Christopher R. Jackson, Jody M. Klymak, Dong S. Ko, Sen Jan, T. M. Shaun Johnson, Sonya Legg, I-Huan Lee, Ren-Chih Lien, Matthew J. Mercier, James N. Mourn, Ruth Musgrave, Jae-Hun Park, Andrew I. Pickering, Robert Pinkel, Luc Rainville, Steven R. Ramp, Daniel L. Rudnick, Sutanu Sarkar, Alberto Scotti, Harper L. Simmons, Louis C. St. Laurent, Subhas Karan Venayagamoorthy, Yu-Huai Wang, Joe Wang, Ying J. Yang, Theresa Paluszkiewicz, Tswen-Yung David Tang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Internal gravity waves, the subsurface analogue of the familiar surface gravity waves that break on beaches, are ubiquitous in the ocean. Because of their strong vertical and horizontal currents, and the turbulent mixing caused by their breaking, they affect a panoply of ocean processes, such as the supply of nutrients for photosynthesis¹, sediment and pollutant transport² and acoustic transmission³; they also pose hazards for man-made structures in the ocean⁴. Generated primarily by the wind and the tides, internal waves can travel thousands of kilometers from their sources before breaking⁵, making it …

Undergraduate Catalog

Undergraduate & Graduate Catalogs

No abstract provided.

Biol 4903: Senior Capstone, Steelman Library, Jerm J. Day-Storms Dr.

Syllabus Repository

No abstract provided.

Editors' Note, Laura B. Regassa, Delena Gatch

Biology: Faculty Publications

Dear colleagues,

The International Journal for the Scholarship of Teaching & Learning is undergoing some major changes.

• The layout of the journal has been overhauled, giving it a look that better aligns with the quality of the content. As we continue to struggle with SoTL “counting” as scholarship at some institutions, it is important to package our work in a way that reinforces its value. We hope you enjoy the new look!

• Articles are being assigned DOI (digital object identifier) numbers. All articles, past and present, will be tagged and linked to metadata as indexing is completed over the next …

2015 Spring Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

2015 Fall Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

Consanguinity And Pregnancy Outcomes In A Multi-Ethnic, Metropolitan European Population, Rolf Becker, Thomas Keller, Rolf-Dieter Wegner, Heidemarie Neitzel, Markus Stumm, Ute Knoll, Markus Stärk, Heiner Fangerau, Alan Bittles

Research outputs 2014 to 2021

Objective: The aim of the present study was to assess the risk of major anomalies in the offspring of consanguineous couples, including data on the prenatal situation. Methods: Over 20years (1993-2012), 35391 fetuses were examined by prenatal sonography. In 675 cases (1.9%), parents were consanguineous, with 307 couples (45.5%) related as first cousins, 368 couples (54.5%) beyond first cousins. Detailed information was retrieved on 31710 (89.6%) fetuses, (consanguineous 568: 1.8%). Results: Overall prevalence of major anomalies among fetuses with non-consanguineous parents was 2.9% (consanguineous, 10.9%; first cousins, 12.4%; beyond first cousins, 6.5%). Adjusting the overall numbers for cases having been …

Rapid Root Elongation By Phreatophyte Seedlings Does Not Imply Tolerance Of Water Table Decline, Caroline A. Canham, Raymond H. Froend, William D. Stock

Research outputs 2014 to 2021

Key message Despite high rates of root elongation during phreatophyte establishment once connection to groundwater has occurred and leaf area develops, seedlings demonstrate limited capacity for root elongation in response to groundwater decline.

Abstract In a water-limited environment, rapid root elongation immediately after germination can be critical for a plant to reach deeper water sources such as a water table to avoid water deficit stress. However, once plants have accessed a water table, their continued survival may depend on their ability to adapt their root distribution to changes in the depth to a water table. In glasshouse experiments using two …

Mechanisms Contributing To Differential Regulation Of Pax3 Downstream Target Genes In Normal Human Epidermal Melanocytes Versus Melanoma Cells, Danielle Bartlett, Glen M. Boyle, Mel Ziman, Sandra Medic

Research outputs 2014 to 2021

Melanoma is a highly aggressive and drug resistant form of skin cancer. It arises from melanocytes, the pigment producing cells of the skin. The formation of these melanocytes is driven by the transcription factor PAX3 early during embryonic development. As a result of alternative splicing, the PAX3 gene gives rise to eight different transcripts which encode isoforms that have different structures and activate different downstream target genes involved in pathways of cell proliferation, migration, differentiation and survival. Furthermore, posttranslational modifications have also been shown to alter the functions of PAX3.We previously identified PAX3 downstream target genes in melanocytes and melanoma …

Rapid Recovery Of An Urban Remnant Reptile Community Following Summer Wildfire, Robert A. Davis, Tim S. Doherty

Research outputs 2014 to 2021

Reptiles in urban remnants are threatened with extinction by increased fire frequency, habitat fragmentation caused by urban development, and competition and predation from exotic species. Understanding how urban reptiles respond to and recover from such disturbances is key to their conservation. We monitored the recovery of an urban reptile community for five years following a summer wildfire at Kings Park in Perth, Western Australia, using pitfall trapping at five burnt and five unburnt sites. The reptile community recovered rapidly following the fire. Unburnt sites initially had higher species richness and total abundance, but burnt sites rapidly converged, recording a similar …

Multiple Drivers Of Decline In The Global Status Of Freshwater Crayfish (Decapoda: Astacidea), Nadia I. Richman, Monika Bohm, Susan Adams, Fernando Alvarez, Elizabeth A. Bergey, John J.S. Bunn, Quinton Burnham, Jay Cordeiro, Jason Coughran, Keith A. Crandall, Kathryn L. Dawkins, Robert J. Distefano, Niall E. Doran, Lennart Edsman, Arnold G. Eversole, Leopold Fureder, James M. Furse, Francessa Gherardi, Premek Hamr, David M. Holdich, Pierre Horwitz, Kerrylyn Johnston, Clive M. Jones, Julia P.G. Jones, Robert L. Jones, Thomas G. Jones, Tadashi Kawai, Susan Lawler, Marilu Lopez-Mejia, Rebecca M. Miller, Carlos Pedraza-Lara, Julian D. Reynolds, Alastair M.M. Richardson, Mark B. Schiltz, Guenter A. Schuster, Peter J. Sibley, Catherine Souty-Grosset, Christopher A. Taylor, Roger F. Thoma, Jerry Walls, Todd S. Walsh, Ben Collen

Research outputs 2014 to 2021

Rates of biodiversity loss are higher in freshwater ecosystems than in most terrestrial or marine ecosystems, making freshwater conservation a priority. However, prioritization methods are impeded by insufficient knowledge on the distribution and conservation status of freshwater taxa, particularly invertebrates. We evaluated the extinction risk of the world's 590 freshwater crayfish species using the IUCN Categories and Criteria and found 32% of all species are threatened with extinction. The level of extinction risk differed between families, with proportionally more threatened species in the Parastacidae and Astacidae than in the Cambaridae. Four described species were Extinct and 21% were assessed as …

The Uyghur Population And Genetic Susceptibility To Type 2 Diabetes: Potential Role For Variants In Cdkal1, Jazf1, And Igf1 Genes, Manshu Song, Feifei Zhao, Longjin Ran, Mamatyusupu Dolikun, Lijuan Wu, Lijuan Ge, Hao Dong, Qing Gao, Yanchun Zhai, Ling Zhang, Yuxiang Yan, Fen Liu, Xinghua Yang, Xiuhua Guo, Youxin Wang, Wei Wang

Research outputs 2014 to 2021

Substantial evidence suggests that type 2 diabetes mellitus (T2DM) is a multi-factorial disease with a strong genetic component. A list of genetic susceptibility loci in populations of European and Asian ancestry has been established in the literature. Little is known on the inter-ethnic contribution of such established functional polymorphic variants. We performed a case-control study to explore the genetic susceptibility of 16 selected T2DM-related SNPs in a cohort of 102 Uyghur objects (51 cases and 51 controls). Three of the 16 SNPs showed significant association with T2DM in the Uyghur population. There were significant differences between the T2DM and control …