Digital Commons Network^™

Improving Wastewater Treatment Using Algal Biofilms And Bioenergy, Nathan Guymon

Research on Capitol Hill

This project represents a collaboration between Utah State University, Central Valley Water Reclamation Facility (CVWRF), and WesTech Engineering, Inc. The goal of the project is to help water treatment plants meet state nutrient standards and reduce operating costs. This is being accomplished in three major sections:

1. Wastewater treatment – microalgae is grown to remove nitrogen and phosphorus from water.

2. Biogas generation – the microalgae is harvested and processed to produce methane gas used to generate power.

3. Fertilizer production – nutrients are also collected from the wastewater and turned into high-value fertilizer.

By creating systems that remove nutrients …

Molecular Relatedness Of Two Distinct Type Iv Crispr-Associated (Cas) Proteins, Matt Armbrust

Research on Capitol Hill

CRISPR-Cas systems are prokaryotic adaptive immune systems. Bacteria use CRISPR systems as a defense against foreign nucleic acid invasion such as phage infection.

Silkworms With Spider Silklike Fibers Using Synthetic Silkworm Chow Containing Calcium Lignosulfonate, Carbon Nanotubes, And Graphene, Xiaoli Zhang, Ana Laura Licon, Thomas I. Harris, Paula F. Oliveira, Bailey J. Mcfarland, Blake E. Taurone, Brittney J. Walsh, Brianne E. Bell, Caleb T. Walker, Randolph V. Lewis, Justin A. Jones

Biology Faculty Publications

Silkworm silk has become increasingly relevant for material applications. However, the industry as a whole is retracting because of problems with mass production. One of the key problems is the inconsistent properties of the silk. A means by which to improve the silk material properties is through enhanced sericulture techniques. One possible technique is altering the feed of the silkworms to include single-wall carbon nanotubes (SWNTs) or graphene (GR). Recently published results have demonstrated substantial improvement in fiber mechanical properties. However, the effect of the surfactant used to incorporate those materials into the feed on the fiber mechanical properties in …

Faculty Senate Minutes, March 4, 2019, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Spring Break 2020 Calendar
• Parking Committee Annual Report
• Koch Task Force Resolution
• Academic Freedom and Tenure
• Council on Teacher Education
• Greenhouse Gas Resolution

Draft Genome Assembly And Population Genetics Of An Agricultural Pollinator, The Solitary Alkali Bee (Halictidae: Nomia Melanderi), Karen M. Kapheim, Hailin Pan, Cai Li, Charles Blatti Ill, Brock A. Harpur, Panagiotis Ioannidis, Beryl M. Jones, Clement F. Kent, Livio Ruzzante, Laura Sloofman, Eckart Stolle, Robert M. Waterhouse, Amro Zayed, Guojie Zhang, William T. Wcislo

Biology Faculty Publications

Alkali bees (Nomia melanderi) are solitary relatives of the halictine bees, which have become an important model for the evolution of social behavior, but for which few solitary comparisons exist. These ground-nesting bees defend their developing offspring against pathogens and predators, and thus exhibit some of the key traits that preceded insect sociality. Alkali bees are also efficient native pollinators of alfalfa seed, which is a crop of major economic value in the United States. We sequenced, assembled, and annotated a high-quality draft genome of 299.6 Mbp for this species. Repetitive content makes up more than one-third of …

Chatting Without Borders: Assessment As The First Step In Cultivating An Accessible Chat Reference Service, Teagan Eastman, Mckenzie Hyde, Katie Strand, Rachel Wishkoski

Library Faculty & Staff Publications

As distance education programs grow at college and universities across the country, libraries must ensure virtual reference services are prepared to meet the needs of patrons in these programs. This article describes the process and results of a 2018 chat analysis conducted at a midsize research university with a large distance education program. The authors discuss the implications of their findings, as well as their process of closing the assessment loop. By using data to inform changes to virtual reference services, chat becomes more accessible and approachable to all users regardless of location.

Utah State Capitol Grounds Landscape Water Use Assessment, Joanna Endter-Wada, Diana T. Glenn, Chris Garrard, Ellie Leydsman Mcginty, Kelly Kopp, Jennie Hoover

Environment and Society Faculty Publications

This USU research and Extension report contains an analysis of landscape water use for the Utah State Capitol grounds. It is being provided in response to a legislative request for this information. The Capitol grounds crew requested and received a Water Check in July and August of 2018. It was provided through the Water Check program affiliated with the Center for Water Efficient Landscaping (CWEL) at Utah State University (USU) Extension. The Water Check program has been offered under contract with Metropolitan Water District of Salt Lake & Sandy since 2009 and delivered to customers in the Salt Lake City …

Livestock Grazing And Sage-Grouse: Science, Policy, And The 7-Inch Rule, David K. Dahlgren, Eric Thacker

All Current Publications

This fact sheet discusses livestock grazing and its impact on sage-grouse.

Measuring And Building Soil Health, Matt Yost, Grant Cardon, Brad Crookston, Jennifer Reeve, Earl Creech

All Current Publications

This fact sheet provide facts about soil health and will help land managers understand what soil health is, how to measure it, and how to potentially build it on their soils.

Tomato Hornworm, Tobacco Hornworm (Manduca Quinquemaculata And Manduca Sexta), Nick Volesky, Marion Murray

All Current Publications

This fact sheet describes the tomato hornworm and the tobacco hornworm that cause similar damage to the same host plants. It includes hosts, identification, life cycle, signs and symptoms, monitoring, and management.

Crabapples In The Landscape, Sheriden M. Hansen, Jaydee Gunnell, Stephanie Vaughn

All Current Publications

Crabapples are ornamental trees closely related to common apple trees and are distinguished by fruit size. There are approximately 100 commonly planted varieties of apple trees. Crabapples make an excellent addition to Utah landscapes as they are considered to be drought tolerant, low maintenance, and versatile trees that can withstand the sometimes harsh climate conditions in Utah. Crabapples proved year round interest with profuse spring bloom, bright fall colors, and persistent fruit that can be brightly colored and attractive to native birds in the winter months.

Injury Scores And Spatial Responses Of Wolves Following Capture: Cable Restraints Versus Foothold Traps, Eric M. Gese, Patricia A. Terletzky, John D. Erb, Kevin C. Fuller, Jeffery P. Grabarkewitz, John P. Hart, Carolin Humpal, Barry A. Sampson, Julie K. Young

Wildland Resources Faculty Publications

Wolves (Canis lupus) have been captured with foothold traps for several decades to equip them with radiocollars for population monitoring. However, trapping in most areas is limited to spring, summer, and autumn as cold winter temperatures can lead to frozen appendages in trapped animals. In addition, conflicts arise when domestic dogs encounter these traps in nonwinter seasons. An alternative capture method is the use of cable restraint devices (modified neck snares) in the winter. We evaluated injury scores, movement patterns, and space use of wolves captured in cable restraint devices and foothold traps in north‐central Minnesota, USA, during …

Congruent Phylogenetic Relationships Of Melaphidina Aphids (Aphididae: Eriosomatinae: Fordini) According To Nuclear And Mitochondrial Dna Data With Taxonomic Implications On Generic Limits, Zhumei Ren, Carol D. Von Dohlen, A. J. Harris, Rebecca B. Dikow, Xu Su, Jun Wen

Biology Faculty Publications

Melaphidina aphids (Rhus-gall aphids; Eriosomatinae: Fordini) comprise five genera from eastern Asia and one monotypic genus from eastern North America. Melaphidina are unique in feeding on plant species of Rhus subgenus Rhus (Anacardiaceae), on which they form galls during the summer. The phylogenetic relationships among some species of Melaphidina aphids remain controversial. In this study, we sought to resolve the backbone phylogeny of Melaphidina aphids by sampling 15 accessions representing all six genera, all species, and all subspecies except Meitanaphis microgallis using 20 gene regions: five nuclear genes as well as 13 protein-coding genes and two rRNA genes …

Transition State Interactions In A Promiscuous Enzyme: Sulfate And Phosphate Monoester Hydrolysis By Pseudomonas Aeruginosa Arylsulfatase, Bert Van Loo, Ryan Berry, Usa Boonyuen, Mark F. Mohamed, Marko Golicnik, Alvan C. Hengge, Florian Hollfelder

Chemistry and Biochemistry Faculty Publications

Pseudomonas aeruginosa arylsulfatase (PAS) hydrolyses sulfate and, promiscuously, phosphate monoesters. Enzyme-catalyzed sulfate transfer is crucial to a wide variety of biological processes, but detailed studies of the mechanistic contributions to its catalysis are lacking. We present linear free energy relationships (LFERs) and kinetic isotope effects (KIEs) of PAS and active site mutants that suggest a key role for leaving group (LG) stabilization. In LFERs PAS^_WT has a much less negative Brønsted coefficient (ß_{leaving group} ^obs-Enz=-0.33) than the uncatalyzed reaction (ß_{leaving group} ^obs=-1.81). This situation is diminished when cationic active site groups are exchanged for alanine. …

Structural And Functional Characterization Of Sulfonium Carbon-Oxygen Hydrogen Bonding In The Deoxyamino Sugar Methyltransferase Tyim1, Robert J. Fick, Scott Horowitz, Brandon G. Mcdole, Mary C. Clay, Ryan A. Mehl, Hashim M. Al-Hashimi, Steve Scheiner, Raymond C. Trievel

Chemistry and Biochemistry Faculty Publications

The N-methyltransferase TylM1 from Streptomyces fradiae catalyzes the final step in the biosynthesis of the deoxyamino sugar mycaminose, a substituent of the antibiotic tylosin. The high-resolution crystal structure of TylM1 bound to the methyl donor S-adenosylmethionine (AdoMet) illustrates a network of carbon-oxygen (CH•••O) hydrogen bonds between the substrate’s sulfonium cation and residues within the active site. These interactions include hydrogen bonds between the methyl and methylene groups of the AdoMet sulfonium cation and the hydroxyl groups of Tyr14 and Ser120 in the enzyme. To examine the functions of these interactions, we generated Tyr14 to phenylalanine (Y14F) and Ser120 to alanine …

Assessing Data Availability And Research Reproducibility In Hydrology And Water Resources, James H. Stagge, David E. Rosenberg, Adel M. Abdallah, Hadia Akbar, Nour A. Atallah, Ryan James

Civil and Environmental Engineering Faculty Publications

There is broad interest to improve the reproducibility of published research. We developed a survey tool to assess the availability of digital research artifacts published alongside peer-reviewed journal articles (e.g. data, models, code, directions for use) and reproducibility of article results. We used the tool to assess 360 of the 1,989 articles published by six hydrology and water resources journals in 2017. Like studies from other fields, we reproduced results for only a small fraction of articles (1.6% of tested articles) using their available artifacts. We estimated, with 95% confidence, that results might be reproduced for only 0.6% to 6.8% …

Strategies For Selecting, Managing, And Engaging Undergraduate Coauthors: A Multi-Site Perspective, Jenna L. Scisco, Jennifer A. Mccabe, Albee Therese O. Men-Doza, Marianne Fallon, Melanie M. Domenech-Rodriguez

Psychology Faculty Publications

In 2018, we delivered a symposium on publishing with undergraduate coauthors in the Psi Chi Journal of Psychological Research (Fallon, 2018a; Fallon and Domenech Rodríguez, 2018a,b; Fallon and Scisco, 2018; McCabe and Mendoza, 2018). Based on our collective experience, we identified three common challenges: effectively selecting, managing, and engaging students throughout the publication process. We use our perspectives from different institutions (i.e., small liberal arts colleges, mid-sized regional universities, and a large research university) and evidence from past research to provide strategies to successfully meet these challenges. Ultimately, the actionable strategies we describe …

Utah State University’S Cache Valley Latinx Voices Project: Social Justice In The Archives, Randy Williams, Eduardo Ortiz, Maria Luisa Spicer-Escalante

Journal of Western Archives

Northern Utah Speaks is an in-depth ethnographic effort by Utah State University Libraries’ Special Collections and Archives (SCA) to bring diverse voices of Northern Utah communities into the Archives. Since 2006, the focus is with social justice in mind as SCA endeavors to bring the voices of underrepresented and historically excluded people into the Archives. Calls to make archival records more inclusive stretch back fifty years, however for many archival institutions this work has moved forward in fits and starts, if at all, and most often without the input and assistance from the community to be studied, collected, and included. …

The Cost Of Care And The Impact On The Archives Profession, Alexis Braun Marks, Rachael Dreyer, Jennifer Johnson, Michelle Sweetser

Journal of Western Archives

The archives profession has, in recent years, exerted considerable effort to become more welcoming and inclusive to diverse archival professionals. Many of these efforts have focused intensively on recruiting a diverse workforce. In this article, the authors propose a new approach through which to create and sustain inclusive archival work environments: caregiving. National research has shown that caregiving responsibilities affect women more than their male counterparts, and within these gender divides there are aspects of caregiving that impact individuals of different racial and cultural backgrounds unequally. The issue of navigating the demands of caregiving, work responsibilities, and professional engagement must …

15 Outstanding Students Recognized At Awards Banquet | College Of Engineering, Utah State University

College of Engineering News

The College of Engineering extends its heartfelt congratulations to the 15 undergraduate students recognized at Friday’s Engineers Week Awards Banquet.

The Plant Diversity Sampling Design For The National Ecological Observatory Network, David T. Barnett, Peter B. Adler, Benjamin R. Chemel, Paul A. Duffy, Brian J. Enquist, James B. Grace, Susan Harrison, Robert K. Peet, David S. Schimel, Thomas J. Stohlgren, Mark Velled

Ecology Center Publications

The National Ecological Observatory Network (NEON) is designed to facilitate an understanding of the impact of environmental change on ecological systems. Observations of plant diversity—responsive to changes in climate, disturbance, and land use, and ecologically linked to soil, biogeochemistry, and organisms—result in NEON data products that cross a range of organizational levels. Collections include samples of plant tissue to enable investigations of genetics, plot-based observations of incidence and cover of native and non-native species, observations of plant functional traits, archived vouchers of plants, and remote sensing airborne observations. Spatially integrating many ecological observations allows a description of the relationship of …

Reply To: “Global Conservation Of Phylogenetic Diversity Captures More Than Just Functional Diversity”, Florent Mazel, Matthew W. Pennell, Marc W. Cadotte, Sandra Diaz, Giulio Valentino Dalla Riva, Richard Grenyer, Fabien Leprieur, Arne O. Mooers, David Mouillot, Caroline M. Tucker, William D. Pearse

Ecology Center Publications

Academic biologists have long advocated for conserving phylogenetic diversity (PD), often (but not exclusively) on the basis that PD is a useful proxy for “feature diversity”, defined as the variety of forms and functions represented in set of organisms (see below for an extended discussion of this definition). In a recent paper, we assess the extent to which this proxy (which we coined the “phylogenetic gambit”) holds in three empirical datasets (terrestrial mammals, birds, and tropical marine fishes) when using functional traits and functional diversity (FD) to operationalize feature diversity. Owen et al. offer a criticism of our methods for …

The Utah Statesman, February 19, 2019, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Muscle Atrophy Marker Expression Differs Between Rotary Cell Culture System And Animal Studies, Charles P. Harding, Elizabeth Vargis

Biological Engineering Faculty Publications

Muscular atrophy, defined as the loss of muscle tissue, is a serious issue for immobilized patients on Earth and for humans during spaceflight, where microgravity prevents normal muscle loading. In vitro modeling is an important step in understanding atrophy mechanisms and testing countermeasures before animal trials. The most ideal environment for modeling must be empirically determined to best mimic known responses in vivo. To simulate microgravity conditions, murine C2C12 myoblasts were cultured in a rotary cell culture system (RCCS). Alginate encapsulation was compared against polystyrene microcarrier beads as a substrate for culturing these adherent muscle cells. Changes after culture …

The Intrepid Urban Coyote: A Comparison Of Bold And Exploratory Behavior In Coyotes From Urban And Rural Environments, Stewart W. Breck, Sharon A. Poessel, Peter J. Mahoney, Julie K. Young

Wildland Resources Faculty Publications

Coyotes (Canis latrans) are highly adaptable, medium-sized carnivores that now inhabit nearly every large city in the United States and Canada. To help understand how coyotes have adapted to living in urban environments, we compared two ecologically and evolutionarily important behavioral traits (i.e., bold-shy and exploration-avoidance behavior) in two contrasting environments (i.e., rural and urban). Boldness is an individual’s reaction to a risky situation and exploration is an individual’s willingness to explore novel situations. Our results from both tests indicate that urban coyotes are bolder and more exploratory than rural coyotes and that within both populations there are …

Emerging Reservoir Delta‐Backwaters: Biophysical Dynamics And Riparian Biodiversity, Malia A. Volke, W. Carter Johnson, Mark D. Dixon, Michael L. Scott

Watershed Sciences Faculty Publications

Deltas and backwater‐affected bottomlands are forming along tributary and mainstem confluences in reservoirs worldwide. Emergence of prograding deltas, along with related upstream hydrogeomorphic changes to river bottomlands in the backwater fluctuation zones of reservoirs, signals the development of new and dynamic riparian and wetland habitats. This study was conducted along the regulated Missouri River, USA, to examine delta‐backwater formation and describe vegetation response to its development and dynamics. Our research focused specifically on the delta‐backwater forming at the confluence of the White River tributary and Lake Francis Case reservoir. Objectives of the research were to: (1) describe and analyze the …

Addressing Challenges For Mapping Irrigated Fields In Subhumid Temperate Regions By Integrating Remote Sensing And Hydroclimatic Data, Tianfang Xu, Jillian M. Deines, Anthony D. Kendall, Bruno Basso, David W. Hyndman

Publications

High-resolution mapping of irrigated fields is needed to better estimate water and nutrient fluxes in the landscape, food production, and local to regional climate. However, this remains a challenge in humid to subhumid regions, where irrigation has been expanding into what was largely rainfed agriculture due to trends in climate, crop prices, technologies and practices. One such region is southwestern Michigan, USA, where groundwater is the main source of irrigation water for row crops (primarily corn and soybeans). Remote sensing of irrigated areas can be difficult in these regions as rainfed areas have similar characteristics. We present methods to address …

A Continental Water Model For All | College Of Engineering, Utah State University

College of Engineering News

Understanding the movement and availability of water locally and across the country is of paramount importance to both economic productivity and the human health of the nation.

Identification And Transformation Difficulty In Problem Solving: Electrophysiological Evidence From Chunk Decomposition, Zhonglu Zhang, Yu Luo, Chaolun Wang, Christopher M. Warren, Qi Xia, Qiang Xing, Bihua Cao, Yi Lei, Hong Li

Psychology Faculty Publications

A wealth of studies have investigated how to overcome experience-based constraints in creative problem solving. One such experience-based constraint is the tendency for people to view tightly organized visual stimuli as single, unified percepts, even when decomposition of those stimuli into component parts (termed chunk decomposition) would facilitate problem solving. The current study investigates the neural underpinnings of chunk decomposition in creative problem solving by analyzing event-related potentials. In two experiments, participants decomposed Chinese characters into the character’s component elements and then used the base elements to form a new valid character. The action could require decomposing a “tight” chunk, …

Comparison Of Σ-Hole And Π-Hole Tetrel Bonds In Complexes Of Borazine With Th3f And F2to/H2to (T=C,Si,Ge), Jingru Zhang, Qingze Hu, Qing-Zhong Li, Steve Scheiner, Shufeng Liu

Chemistry and Biochemistry Faculty Publications

The complexes between borazine and TH3F/F2TO/H2TO (T=C, Si, Ge) are investigated with high-level quantum chemical calculations. Borazine has three sites of negative electrostatic potential: the N atom, the ring center, and the H atom of the B-H bond, while TH3F and F2TO/H2TO provide the σ-hole and π-hole, respectively, for the tetrel bond. The N atom of borazine is the favored site for both the σ and π-hole tetrel bonds. Less stable dimers include a σ-tetrel bond to the borazine ring center and to the BH proton. The π-hole tetrel-bonded complexes are more strongly bound than aretheirσ-hole counterparts. Due to the …