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The Economic Impacts Of Blackbird (Icteridae) Damage To Sunflower In The Usa, Karina Ernst, Julie Elser, George Linz, Hans Kandel, Jason Holderieath, Samantha DeGroot, Steven Shwiff, Stephanie Shwiff 2019 USDA APHIS Wildlife Services

The Economic Impacts Of Blackbird (Icteridae) Damage To Sunflower In The Usa, Karina Ernst, Julie Elser, George Linz, Hans Kandel, Jason Holderieath, Samantha Degroot, Steven Shwiff, Stephanie Shwiff

Jason Holderieath

BACKGROUND: Blackbird (Icteridae) damage to ripening sunflower (Helianthus annuus L.) has been a persistent economic issue in the USA for the last five decades. To quantify losses, we surveyed blackbird damage from 2001 to 2013 (excluding 2004) to physiologically mature sunflower in eight states: North Dakota, South Dakota, Texas, Nebraska, Minnesota, Colorado, Kansas, and Vermont.

RESULTS:We pooled data gathered during the most recent 5 years (2009 to 2013) of the survey and found losses averaged $US2.5 million and $US11.3 million for confectionery and oilseed hybrids, respectively. Three states, North Dakota, South Dakota, and Nebraska, had sufficient acreage ...


A Computational Model For Recovery From Traumatic Brain Injury, Wayne W. Wakeland, Erin Kenzie 2019 Portland State University

A Computational Model For Recovery From Traumatic Brain Injury, Wayne W. Wakeland, Erin Kenzie

Wayne W. Wakeland

A computational simulation model calculates estimated recovery trajectories following traumatic brain injury (TBI). Prior publications include a multi-scale conceptual framework for studying concussion, a systems-level causal loop diagram (CLD) and an analysis of key feedback processes. A set of first order ordinary differential equations and their associated parameters determines recovery trajectories. The model contains 15 state variables, 73 auxiliary variables, and 50 parameters describing TBI pathology in an aggregate fashion at the cellular, network, cognitive and social levels. There are 1200 feedback loops, which give rise to a variety of behavior modes, many of which are highly nonlinear. Exogenous parameters ...


The Grass Grows Green In Virginia: A Grassroots Effort Leading To Comprehensive Change In Removing Mathematics Barriers For Students., Patricia Parker 2019 Virginia Community College System

The Grass Grows Green In Virginia: A Grassroots Effort Leading To Comprehensive Change In Removing Mathematics Barriers For Students., Patricia Parker

Inquiry: The Journal of the Virginia Community Colleges

The Virginia Community College System (VCCS) embarked on a comprehensive mathematics pathways project in October 2015 with a move from design to implementation in spring 2017. The VCCS Mathematics Pathways Project (VMPP) aimed not only to develop strategies to improve retention and completion, but also to address foundational barriers to students’ success. This grassroots effort involved collaboration among all 23 community colleges, over 200 mathematics faculty, and staff from career and technical support departments. Collaboration extended to the K–12 and university sectors, professional organizations, publishers, and foundations. VMPP goals focused on creating structured mathematics pathway courses for all program ...


Implementing Mth 155: Statistical Reasoning Co-Requisite, Pansy Waycaster 2019 Virginia Highlands Community College

Implementing Mth 155: Statistical Reasoning Co-Requisite, Pansy Waycaster

Inquiry: The Journal of the Virginia Community Colleges

Virginia Highlands Community College (VHCC) implemented MTH 155 — Statistical Reasoning Co-Requisite — in the spring semester of 2018. MTH 155 replaced MTH 146 on VHCC’s campus. Prerequisites for this course are the first five developmental MTE modules. The intended co-requisite audience for this new course consists of students having successfully completed at least three of the five MTE modules. These students co-enrolled in MCR 5 and received targeted assistance for the MTH 155 course. Successful completion of MTH 155 resulted in the prerequisite MTE modules 1-5 being satisfied. This paper will present the results of this study along with implications ...


Reinforcing The Number Of Disjoint Spanning Trees, Damin Liu, Hong-Jian Lai, Zhi-Hong Chen 2019 Butler University

Reinforcing The Number Of Disjoint Spanning Trees, Damin Liu, Hong-Jian Lai, Zhi-Hong Chen

Zhi-Hong Chen

The spanning tree packing number of a connected graph G, denoted by T(G), is the maximum number of edge-disjoint spanning trees of G. In this paper, we determine the minimum number of edges that must be added to G so that the resulting graph has spanning tree packing number at least k, for a given value of k.


Mattes J., 2019. Wissenskulturen Des Subterranen. Vermittler Im Spannungsfeld Zwischen Wissenschaft Und Öffentlichkeit. Ein Biographisches Lexikon. [The Culture Of Subterranean Knowledge. Mediators In The Field Of Tension Between Science And Public. A Biographical Lexicon], Monika Schöner 2019 Landesverein für Höhlenkunde in Wien und NÖ

Mattes J., 2019. Wissenskulturen Des Subterranen. Vermittler Im Spannungsfeld Zwischen Wissenschaft Und Öffentlichkeit. Ein Biographisches Lexikon. [The Culture Of Subterranean Knowledge. Mediators In The Field Of Tension Between Science And Public. A Biographical Lexicon], Monika Schöner

International Journal of Speleology

No abstract provided.


The Lampenflora In Show Caves And Its Treatment: An Emerging Ecological Problem, Carlos Baquedano Estévez, Luis Moreno Merino, Almudena de la Losa Román, Juan J. Durán Valsero 2019 Geological Survey of Spain (IGME)

The Lampenflora In Show Caves And Its Treatment: An Emerging Ecological Problem, Carlos Baquedano Estévez, Luis Moreno Merino, Almudena De La Losa Román, Juan J. Durán Valsero

International Journal of Speleology

The artificial lighting of caves adapted for touristic visits, leads to the appearance and propagation of a complex community of phototrophic organisms known as “lampenflora”. Formed mainly by algae and cyanobacteria, they produce the degradation of the colonized substrates and decrease the show value of the caves. This phenomenon became famous worldwide in the 1960s due to the damage caused to the paintings in the Lascaux Cave (France). Since then it has become an issue of serious concern to both managers of show caves and to the international scientific community. Over time, the problem has been approached following two complementary ...


Syntheses, Characterization, And Preliminary Evaluation Of Potential Ruthenium Anticancer Complexes Containing Schiff Base Ligands, Stephen Mensah 2019 Illinois State University

Syntheses, Characterization, And Preliminary Evaluation Of Potential Ruthenium Anticancer Complexes Containing Schiff Base Ligands, Stephen Mensah

Theses and Dissertations

Platinum-based drugs have over the years been administered in the treatment of tumours.

Unfortunately, platinum resistance and the severe side effects associated with the treatments has necessitated the research for new anti-cancer drugs. Ruthenium(II) and Ruthenium(III) complexes have shown promise as useful alternative anticancer agents. The lead candidates include the Ru(II) complex RAPTA-C, a ruthenium(II)-arene complex [Ru(η6-p-cymene)Cl2(1,3,5-triaza-7-phosphaadamantane)] and the Ru(III) complex NAMI-A [imidazoleH][trans-Ru(imidazole) (dimethyl sulfoxide)Cl4]. Both compounds have shown potent cytotoxic activity in several primary human tumor models. Unfortunately, NAMI-A could not advance in clinical evaluations ...


Loss Of Scribble Confers Cisplatin Resistance During Nsclc Chemotherapy Via Nox2/Ros And Nrf2/Pd-L1 Signaling, Na Wang, Lele Song, Yi Xu, Longfu Zhang, Yanjun Wu, Jingyu Guo, Weiwei Ji, Li Li Ph.D., Jingya Zhao, Xin Zhang, Lixing Zhan 2019 Molloy College

Loss Of Scribble Confers Cisplatin Resistance During Nsclc Chemotherapy Via Nox2/Ros And Nrf2/Pd-L1 Signaling, Na Wang, Lele Song, Yi Xu, Longfu Zhang, Yanjun Wu, Jingyu Guo, Weiwei Ji, Li Li Ph.D., Jingya Zhao, Xin Zhang, Lixing Zhan

Li Li

Background: Cisplatin resistance remains a major clinical obstacle to the successful treatment of non-small cell lung cancer (NSCLC). Scribble contributes to ROS-induced inflammation and cisplatin-elevated toxic reactive oxygen species (ROS) promotes cell death. However, it is unknown whether and how Scribble is involved in the cisplatin-related cell death and the underlying mechanism of Scribble in response to chemotherapies and in the process of oxidative stress in NSCLC. Methods: We used two independent cohorts of NSCLC samples derived from patients treated with platinumcontaining chemotherapy and xenograft modeling in vivo. We analyzed the correlation between Scribble and Nox2 or Nrf2/PD-L1 both ...


Crystal Structure Of Graphite Under Room-Temperature Compression And Decompression, Yuejian Wang, Joseph E. Panzik, Boris Kiefer, Kanani K. M. Lee 2019 Yale University

Crystal Structure Of Graphite Under Room-Temperature Compression And Decompression, Yuejian Wang, Joseph E. Panzik, Boris Kiefer, Kanani K. M. Lee

Joseph Panzik

Recently, sophisticated theoretical computational studies have proposed several new crystal structures of carbon (e.g., bct-C4, H-, M-, R-, S-, W-, and Z-carbon). However, until now, there lacked experimental evidence to verify the predicted high-pressure structures for cold-compressed elemental carbon at least up to 50 GPa. Here we present direct experimental evidence that this enigmatic high-pressure structure is currently only consistent with M-carbon, one of the proposed carbon structures. Furthermore, we show that this phase transition is extremely sluggish, which led to the observed broad x-ray diffraction peaks in previous studies and hindered the proper identification of the post-graphite phase ...


A University-Based Forensics Training Center As A Regional Outreach, Education, And Research Activity, Rayford B. Vaughn, David A. Dampier 2019 Marshall University

A University-Based Forensics Training Center As A Regional Outreach, Education, And Research Activity, Rayford B. Vaughn, David A. Dampier

David Dampier

This paper describes a university-based Forensics Training Center (FTC) established by a Department of Justice grant for the purpose of improving the ability of state and local law enforcement in the Southeastern part of the United States to address the rising incidence of computer based crime. The FTC effort is described along with supporting evidence of its need. The program is not only a service activity, but also contributes to the Mississippi State University (MSU) security program pedagogy, and research effort.


A Diffraction Paradox: An Unusually Broad Diffraction Background Signals Ideal Graphene, Shen Chen, Michael Horn-von Hoegen, Patricia A. Thiel, Michael C. Tringides 2019 Iowa State University and Ames Laboratory

A Diffraction Paradox: An Unusually Broad Diffraction Background Signals Ideal Graphene, Shen Chen, Michael Horn-Von Hoegen, Patricia A. Thiel, Michael C. Tringides

Patricia A. Thiel

The realization of the unusual properties of 2-d materials requires the formation of large domains of single layer thickness, extending over the mesoscale. It is found that the formation of ideal graphene on SiC, contrary to textbook diffraction , is signaled by a strong bell-shaped-component (BSC) around the (00) and G(10), but not the SiC(10) spots.The BSC is also seen for graphene on metals, because single layer uniform graphene with large lateral size can also be grown. It is only seen by electron diffraction and not with X-ray or He-scattering experiments. Most likely it originates from the spatial ...


Physics Professor Receives $250k From Nsf To Help Advance Climate Science, 2019 Selected Works

Physics Professor Receives $250k From Nsf To Help Advance Climate Science

Frank Robinson

Sacred Heart University has received $252,060 from the National Science Foundation (NSF) to help advance climate science. This grant will help fund an undergraduate physics research program introducing juniors and seniors to cutting-edge scientific research, intended to bridge major gaps in climate modeling.


Effects Of Stormwater Green Infrastructure On Watershed Outflow: Does Spatial Distribution Matter?, Benjamin Fahy, Heejun Chang 2019 Portland State University

Effects Of Stormwater Green Infrastructure On Watershed Outflow: Does Spatial Distribution Matter?, Benjamin Fahy, Heejun Chang

International Journal of Geospatial and Environmental Research

Green Stormwater Infrastructure (GSI) has become a popular method in urban stormwater management. We examined how spatial distribution of GSI affected rainfall-runoff relationships in a recently developed neighborhood in Gresham, Oregon, USA for the 2017-2018 water year. Runoff ratio, peak discharge, and flashiness were compared under four precipitation scenarios (of differing intensity and duration) and different spatial arrangements of GSI. Distributed GSI reduced runoff ratio (10 - 20%), peak discharge (26 - 68%), and flashiness index (56 - 70%). Distributed GSI outperformed centralized structures for all metrics, reducing runoff ratio (22 - 32%), peak discharge 67 to 69%, and flashiness index (32 - 62%). This ...


Progress Report Ii: Fabrication Of Nanopores In Silicon Nitride Membrane Using Self-Assembly Of Ps-B-Pmma: Nanopore Pattern Transfer To The Si Substrate, Kodai Watanabe, Unnati Joshi, Hiromichi Yamamoto 2019 Hokkaido University

Progress Report Ii: Fabrication Of Nanopores In Silicon Nitride Membrane Using Self-Assembly Of Ps-B-Pmma: Nanopore Pattern Transfer To The Si Substrate, Kodai Watanabe, Unnati Joshi, Hiromichi Yamamoto

Protocols and Reports

The asymmetric PS(46k)-b-PMMA(21k) film was spin-coated on a neutral brush layer grafted onto a Spin-On-Glass (SOG) layer on the aluminum oxide layer on a Si substrate. An aluminum oxide layer was used as a hard mask. The PS-b-PMMA film was annealed at 190 degree C under vacuum for 3 days, so that the ~20 nm diameter nanopores in the film was successfully prepared as a result of self-assembly. The nanopores in the PS-b-PMMA film were able to be transferred to the Si substrate by CF4 etching through the SOG and aluminum oxide layers, although the etching was ...


Co-Localization Of Dna I-Motif-Forming Sequences And 5-Hydroxymethyl-Cytosines In Human Embryonic Stem Cells, Yogini P. Bhavsar-Jog, Eric Van Dornshuld, Tracy A. Brooks, Gregory S. Tschumper, Randy M. Wadkins 2019 University of Mississippi

Co-Localization Of Dna I-Motif-Forming Sequences And 5-Hydroxymethyl-Cytosines In Human Embryonic Stem Cells, Yogini P. Bhavsar-Jog, Eric Van Dornshuld, Tracy A. Brooks, Gregory S. Tschumper, Randy M. Wadkins

Faculty and Student Publications

G-quadruplexes (G4s) and i-motifs (iMs) are tetraplex DNA structures. Sequences capable of forming G4/iMs are abundant near the transcription start sites (TSS) of several genes. G4/iMs affect gene expression in vitro. Depending on the gene, the presence of G4/iMs can enhance or suppress expression, making it challenging to discern the underlying mechanism by which they operate. Factors affecting G4/iM structures can provide additional insight into their mechanism of regulation. One such factor is epigenetic modification. The 5-hydroxymethylated cytosines (5hmCs) are epigenetic modifications that occur abundantly in human embryonic stem cells (hESC). The 5hmCs, like G4/iMs ...


High Throughput Screening Of 3d Printable Resins: Adjusting The Surface And Catalytic Properties Of Multifunctional Architectures, J. Sebastián Manzano, Hsin Wang, Igor I. Slowing 2019 Iowa State University and Ames Laboratory

High Throughput Screening Of 3d Printable Resins: Adjusting The Surface And Catalytic Properties Of Multifunctional Architectures, J. Sebastián Manzano, Hsin Wang, Igor I. Slowing

Igor I. Slowing

Identification of 3D printable materials is crucial to expand the breadth of physical and chemical properties attainable by additive manufacturing. Stereolithography (SLA), a widespread 3D printing method based on resin photo-polymerization, is ideally suited for exploring a large variety of monomers to produce functional three-dimensional solids of diverse properties. However, for most of the commercially available SLA 3D printers, screening monomers and resin compositions requires large volumes (~150 mL) in each printing cycle, making the process costly and inefficient. Herein, a high throughput block (HTB) adaptor was developed to screen arrays of monomers and resin compositions, consuming lower volumes (< 2 mL) and less time per print (< 1/16 based on a 44 matrix) than using the original hardware. Using this approach, a library of materials with different surface hydrophobicities were 3D printed by including long chain acrylates in the resins. In addition, several metal salts were dissolved in an acrylic acid-based resin, 3D printed and screened as heterogeneous catalysts for the selective aerobic oxidation of benzyl alcohol to benzaldehyde. Cu(II)-based resins produced the most active structures. Combinations of Cu(II) and long chain acrylate monomers were then used to 3D print complex catalytic architectures with varying degrees of hydrophobicity. Linear relationships were observed between 3D printed surface area, surface hydrophobicity and catalyst performance. For a high surface Schwarz P topology ca. 60 % enhancement in the catalytic activity of Cu(II) was attained by replacing the parent resin with one containing hydrophobic isodecyl groups, indicating that the immediate environment of the catalytic site affected its performance. The HTB enables fast screening of resins for 3D printing multifunctional architectures with intrinsic catalytic activity, tunable surface properties, and minimal waste.


Making Kr+1-Free Graphs R-Partite, József Balogh, Felix Christian Clemen, Mikhail Lavrov, Bernard Lidický, Florian Pfender 2019 University of Illinois at Urbana-Champaign

Making Kr+1-Free Graphs R-Partite, József Balogh, Felix Christian Clemen, Mikhail Lavrov, Bernard Lidický, Florian Pfender

Bernard Lidický

The Erdős–Simonovits stability theorem states that for all ε > 0 there exists α > 0 such that if G is a Kr+1-free graph on n vertices with e(G) > ex(n, Kr+1) − αn2, then one can remove εn2 edges from G to obtain an r-partite graph. Fu¨redi gave a short proof that one can choose α = ε. We give a bound for the relationship of α and ε which is asymptotically sharp as ε → 0.


Long-Run Impacts Of Trade Shocks And Export Competitiveness: Evidence From The U.S. Bse Event, Chen-Ti Chen, John M. Crespi, William Hahn, Lee L. Schulz, Fawzi Taha 2019 Iowa State University

Long-Run Impacts Of Trade Shocks And Export Competitiveness: Evidence From The U.S. Bse Event, Chen-Ti Chen, John M. Crespi, William Hahn, Lee L. Schulz, Fawzi Taha

John Crespi

This paper examines how comparative advantages of major beef exporters changed following the 2003 bovine spongiform encephalopathy outbreak (BSE), which significantly disrupted the U.S. beef trade until approximately April 2007. Using longitudinal data on beef export values and constructed revealed comparative advantage measures, we show that while some measure of the long-run impacts of BSE on U.S. beef export competitiveness have returned to pre-2003 levels, the U.S.’s comparative advantage has not. We also examine a hypothetical scenario of no BSE event in 2003 and predict what exporters’ competitiveness would have looked like. The authors discuss the ...


Long-Run Impacts Of Trade Shocks And Export Competitiveness: Evidence From The U.S. Bse Event, Chen-Ti Chen, John M. Crespi, William Hahn, Lee L. Schulz, Fawzi Taha 2019 Iowa State University

Long-Run Impacts Of Trade Shocks And Export Competitiveness: Evidence From The U.S. Bse Event, Chen-Ti Chen, John M. Crespi, William Hahn, Lee L. Schulz, Fawzi Taha

Lee Schulz

This paper examines how comparative advantages of major beef exporters changed following the 2003 bovine spongiform encephalopathy outbreak (BSE), which significantly disrupted the U.S. beef trade until approximately April 2007. Using longitudinal data on beef export values and constructed revealed comparative advantage measures, we show that while some measure of the long-run impacts of BSE on U.S. beef export competitiveness have returned to pre-2003 levels, the U.S.’s comparative advantage has not. We also examine a hypothetical scenario of no BSE event in 2003 and predict what exporters’ competitiveness would have looked like. The authors discuss the ...


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