Digital Commons Network^™

Improving Water Resilience With More Perennially Based Agriculture, Andrea D. Basche, Oliver F. Edelson

Department of Agronomy and Horticulture: Faculty Publications

Land conversion from natural to managed ecosystems, while necessary for food production, continues to occur at high rates with significant water impacts. Further, increased rainfall variability exposes agricultural systems to impacts from flood and drought events. In many regions, water limitations are overcome through technological approaches such as irrigation and tile drainage, which may not be sustainable in the long term. A more sustainable approach to combat episodes of floods and droughts is to increase soil water storage and the overall green water efficiency of agroecosystems. Agricultural practices that promote “continuous living cover,” such as perennial grasses, agroforestry and cover …

The Impact Of Continuous Living Cover On Soil Hydrologic Properties: A Meta-Analysis, Andrea D. Basche, Marcia Delonge

Department of Agronomy and Horticulture: Faculty Publications

Increased rainfall variability due to climate change threatens the efficacy of critical soil ecosystem services. One strategy to negate effects of too much or not enough rainfall is to improve soil water properties. Practices that offer “continuous living cover” can enhance soil water storage and other soil hydrologic properties relative to annual crop systems, but to what extent such benefits can accrue, under different conditions, remains under-quantified. To address these uncertainties, we conducted a meta-analysis that included 27 studies representing 93 paired observations measuring two soil hydrologic properties: porosity and the water retained at field capacity. All experiments compared the …

Research Topics To Scale Up Cover Crop Use: Reflections From Innovative Iowa Farmers, Andrea D. Basche, Gabrielle E. Roesch-Mcnally

Department of Agronomy and Horticulture: Faculty Publications

Cover crops as a conservation practice continue to receive attention from farmers, researchers, media, and policy makers, given their ability to effectively reduce water pollution and improve soil quality. Recent estimates of cover crop use across the midwestern Corn Belt, as well as the United States, demonstrate large acreage increases over the last number of years. The annual Sustainable Agriculture Research and Education–Conservation Technology Information Center (SARE– CTIC) survey found that nationally cover crop acreage doubled from 2011 to 2016, based on farmers self-reporting cover crop planting (CTIC 2016). However, the total cover crop acreage based on 2012 Census of …

Genomic-Enabled Prediction Accuracies Increased By Modeling Genotype × Environment Interaction In Durum Wheat, Sivakumar Sukumaran, Diego Jarquin, José Crossa, Matthew Reynolds

Department of Agronomy and Horticulture: Faculty Publications

Genomic prediction studies incorporating genotype × environment (G×E) interaction effects are limited in durum wheat. We tested the genomic-enabled prediction accuracy (PA) of Genomic Best Linear Unbiased Predictor (GBLUP) models—six non-G × E and three G × E models—on three basic cross-validation (CV) schemes— in predicting incomplete field trials (CV2), new lines (CV1), and lines in untested environments (CV0)— in a durum wheat panel grown under yield potential, drought stress, and heat stress conditions. For CV0, three scenarios were considered: (i) leave-one environment out (CV0-Env); (ii) leave one site out (CV0- Site); and (iii) leave 1 yr out (CV0-Year). The …

Validation Of Qtl Mapping And Transcriptome Profiling For Identification Of Candidate Genes Associated With Nitrogen Stress Tolerance In Sorghum, Malleswari Gelli, Anji Reddy Konda, Kan Liu, Chi Zhang, Thomas E. Clemente, David R. Holding, Ismail M. Dweikat

Department of Agronomy and Horticulture: Faculty Publications

Background: Quantitative trait loci (QTLs) detected in one mapping population may not be detected in other mapping populations at all the time. Therefore, before being used for marker assisted breeding, QTLs need to be validated in different environments and/or genetic backgrounds to rule out statistical anomalies. In this regard, we mapped the QTLs controlling various agronomic traits in a recombinant inbred line (RIL) population in response to Nitrogen (N) stress and validated these with the reported QTLs in our earlier study to find the stable and consistent QTLs across populations. Also, with Illumina RNA-sequencing we checked the differential expression of …

Evaluation Of Jules-Crop Performance Against Site Observations Of Irrigated Maize From Mead, Nebraska, Karina Williams, Jemma Gornall, Anna Harper, Andy Wiltshire, Debbie Hemming, Tristan Quaife, Tim Arkebauer, David Scoby

Department of Agronomy and Horticulture: Faculty Publications

The JULES-crop model (Osborne et al., 2015) is a parametrisation of crops within the Joint UK Land Environment Simulator (JULES), which aims to simulate both the impact of weather and climate on crop productivity and the impact of croplands on weather and climate. In this evaluation paper, observations of maize at three FLUXNET sites in Nebraska (US-Ne1, US-Ne2 and US-Ne3) are used to test model assumptions and make appropriate input parameter choices. JULES runs are performed for the irrigated sites (US-Ne1 and US-Ne2) both with the crop model switched off (prescribing leaf area index (LAI) and canopy height) and with …

Science In The Supply Chain: Collaboration Opportunities For Advancing Sustainable Agriculture In The United States, Allison M. Thomson, Stewart Ramsey, Ed Barnes, Bruno Basso, Marlen Eve, Sasha Gennet, Patricio Grassini, Brandon Kliethermes, Marty Matlock, Eileen Mcclellen, Ed Spevak, Clifford S. Snyder, Mark D. Tomer, Chris Van Kessel, Tristram West, Grant Wick

Department of Agronomy and Horticulture: Faculty Publications

Consumers and corporations are increasingly interested in understanding the sustainability of agricultural supply chains and reducing the environmental impacts of food, fiber, feed, and fuel production. This emerging need to quantify environmental impacts from agricultural production creates an opportunity for collaboration with the scientific community. Without such collaboration, sustainability efforts risk failure by adopting unrealistic goals or misguided approaches. This commentary explores the role of science in Field to Market, a nonprofit organization developing a sustainability program for US commodity crops, and highlights opportunities to address emerging science challenges. We evaluate changes over the past 35 years in key environmental …

Genetic Characterization Of The Soybean Nested Association Mapping Population, Qijian Song, Long Yan, Charles Quigley, Brandon D. Jordan, Edward Fickus, Steve Schroeder, Bao-Hua Song, Yong-Qiang Charles An, David Hyten, Randall L. Nelson, Katy Rainey, William D. Beavis, Jim Specht, Brian Diers, Perry Cregan

Department of Agronomy and Horticulture: Faculty Publications

A set of nested association mapping (NAM) families was developed by crossing 40 diverse soybean [Glycine max (L.) Merr.] genotypes to the common cultivar. The 41 parents were deeply sequenced for SNP discovery. Based on the polymorphism of the single-nucleotide polymorphisms (SNPs) and other selection criteria, a set of SNPs was selected to be included in the SoyNAM6K BeadChip for genotyping the parents and 5600 RILs from the 40 families. Analysis of the SNP profiles of the RILs showed a low average recombination rate. We constructed genetic linkage maps for each family and a composite linkage map based on …

Editorial: Genomic Approaches For Improvement Of Understudied Grasses, Keenan Amundsen, Gautam Sarath, Teresa Donze-Reiner

Department of Agronomy and Horticulture: Faculty Publications

Grasses are diverse, spanning native prairies to high-yielding grain cropping systems. They are valued for their beauty and useful for soil stabilization, pollution mitigation, biofuel production, nutritional value, and forage quality; grasses encompass the most important grain crops in the world. There are thousands of distinct grass species and many have promiscuous hybridization patterns, blurring species boundaries. Resources for advancing the science and knowledgebase of individual grass species or their unique characteristics varies, often proportional to their perceived value to society. For many grasses, limited genetic information hinders research progress. Presented in this research topic is a brief snapshot of …

Improvement Of Crystallization Behavior Of Polylactide Using Modified Chitin Whisker As Nucleating Agent, Nichaphat Passornraprasit

Chulalongkorn University Theses and Dissertations (Chula ETD)

This work focuses on the enhancement of crystallization behavior of polylactide (PLA). The small crystalline of polymer was used to induce nuclei for crystallization. The small crystalline of chitin whisker (CW) was prepared by acid hydrolysis. In order to enhance the compatibility between CW and PLA matrix, CW was grafted with acid terminated poly(D,L-lactic acid) (PDLLA) by coupling reaction to obtain PLA-g-CW. Then, the CW and PLA-g-CW were used as nucleating agents by compounding with PLA pellets at various contents from 0.1-0.3 phr by cast film extrusion. The SEM images of nanocomposites showed more agglomeration of whiskers with the increasing …

Gender And Sexuality (First Edition), Carol C. Mukhopadhyay, Tami Blumenfield, Susan Harper, Abby Gondak

Anthropology Publications

Learning Objectives:

• Identify ways in which culture shapes sex/gender and sexuality.
• Describe ways in which gender and sexuality organize and structure the societies in which we live.
• Assess the range of possible ways of constructing gender and sexuality by sharing examples from different cultures, including small-scale societies.
• Analyze how anthropology as a discipline is affected by gender ideology and gender norms.
• Evaluate cultural “origin” stories that are not supported by anthropological data.

Sensitizing Humans To Fish Sentience, Kelly Levenda

Animal Sentience

Although fish can feel pain and suffer, they are not often protected legally. Jonathan Balcombe’s What a Fish Knows provides a timely and important contribution to the literature on animal cognition and sentience. By explaining their personalities and capabilities, Balcombe brings much needed public attention to fish and advances the principle that they need and deserve protection.

Consciousness Is Not Inherent In But Emergent From Life, Jon Mallatt, Todd E. Feinberg

Animal Sentience

Reber’s theory of the cellular basis of consciousness (CBC) is right to emphasize that we should study consciousness (sentience) in its simplest form, taking its evolution into account. However, not enough evidence is presented to support CBC’s unorthodox claim that even simple, one-celled organisms are conscious. As pointed out by other commentators, the CBC seems to be based on outdated ideas about evolution and does not acknowledge that consciousness could be an evolutionary novel feature. Such emergent features are abundant in living organisms. We review our own emergentist solution, in which consciousness evolved in the elaborating nervous systems of the …

What Can Research On Nonhumans Tell Us About Human Dissonance?, Jennifer Vonk

Animal Sentience

Zentall’s thoughtful review of the literature on cognitive dissonance in nonhumans helps to highlight the common finding that similar outcomes in humans and nonhumans can be attributed to different underlying mechanisms. I advocate a more fully comparative approach to the underlying mechanisms, avoiding the assumption of shared processes in humans and nonhumans.

Raising The Moral Consciousness Of Science, Bernard Rollin

Animal Sentience

Precaution on behalf of sentient animals should not be tempered by the questionable principle of the amorality of science.

Will The Precautionary Principle Broaden Acceptance Of Animal Sentience?, Simon Leadbeater

Animal Sentience

Birch uses existing practice to develop a formal Animal Sentience Precautionary Principle (ASPP), which he hopes will become more widely adopted and improve animal welfare outcomes. Birch considers the assumption that all animals are sentient to be extreme. Despite its merits, Birch’s ASPP remains human-centred.

A Preliminary Investigation Into The Welfare Of Lobsters In The Uk, Gemma Carder

Animal Sentience

The welfare of invertebrates is overlooked and their needs are not understood. It is assumed that they do not experience pain and suffering. Studies on decapod crustaceans challenge this assumption. Research has focused on distinguishing between nociception (the ability to detect a harmful stimulus and to react to it reflexively) and pain (an aversive feeling or emotional experience). Findings indicate that decapod crustaceans can experience pain, which supports a case for protecting their welfare. I have investigated the current husbandry conditions of a globally consumed decapod crustacean, the lobster, as housed in tanks inside food outlets in the UK. Housing …

A Chronicle Of Economic Botany, James P. Smith Jr

Botanical Studies

No abstract provided.

The Effects Of A Kinesio® Tape Application On Intramuscular Tissue Temperature Change During A 20-Minute Cryotherapy Application, Michael Samuel Mccrone

Health Nutrition and Exercise Science

The methodology for this research study was specifically designed to investigate whether or not Kinesio® Tape would act as a barrier during a cryotherapy application. Previous research has concluded that certain dressings can act as a barrier and impede the decrease in temperature in the underlying tissue. However, the properties of Kinesio® Tape are supposed to mimic the properties of skin. The thickness of Kinesio® Tape is miniscule compared to other barriers such as a plaster cast or an ace bandage. Due to this property, there were no statistically significant results found in intramuscular tissue temperature change comparing the use …

Attracting A New Generation Of Participants To The Elderly Nutrition Program, Christa Ann Stangl

Health Nutrition and Exercise Science

The purpose of this study was to explore the types of services, programs, and activities needed and/or desired by older adults. The secondary purpose of this study is to explore what prompts and/or influences older adults, to participate in programs related to their health and wellbeing. This study is needed, because the population of older adults has increased, due to the baby boomer generation. Even though there is a large population increase there is a decrease in the use of senior centers. The study used qualitative methods by the means of eight focus group locations in the state of North …

Soil Warming And Drying And The Consquence To Crop Yields Among Conservation Tillage Practices In Frigid Corn-Soybean Fields, Rashad Saeed Alghamdi

Environmental and Conservation Sciences

Concerns over delayed soil warming and drying have hindered adoption of conservation tillage practices in frigid environments. Our objectives were to evaluate the effects of chisel plow (CP), vertical tillage (VT), strip tillage with coulters (STC), and strip tillage with shanks (STS) on soil warming and drying and their potential consequences to crop yields. A two-year study was conduct at three full-scale, producer-managed, corn-soybean fields in the Red River Valley of eastern North Dakota and western Minnesota. Tillage treatments were assessed to measure crop residue cover, soil temperatures, soil volumetric water contents, crop yields, and other metrics. Our study indicated …

Glutaraldehyde Removal From Produced Water Using Photolysis And Photocatalysis, Soklida Hong

Environmental and Conservation Sciences

Glutaraldehyde (GA) has been used extensively as a biocide in hydraulic fracturing fluids leading to the contamination of the compound in produced water. In this study, the performances of photolysis and photocatalysis for removal of GA in synthetic produced water were investigated. The photolytic degradation rate of GA increased with increasing incident ultraviolet light intensity and decreasing pH. Increasing initial GA concentration resulted in a reduced rate of GA degradation. At high salt concentrations, similar to the levels found in produced water, the photodegradation rate of GA was better than those at zero/low salt concentrations. In photocatalytic experiments, GA could …

Introduction, John Dillon, David D. Butorac, Danielle A. Layne

Philosophy Faculty Scholarship

The introduction to Proclus and His Legacy, a volume which investigates Proclus' own thought and his wide-ranging influence within late Neoplatonic, Alexandrine and Byzantinian philosophy and theology. It further explores how Procline metaphysics and doctrines of causality influence and transition into Arabic and Islamic thought, up until Richard Hooker in England, Spinoza in Holland and Pico in Italy. John Dillon provides a helpful overview of Proclus' thought, Harold Tarrant discusses Proclus' influence within Alexandrian philosophy and Tzvi Langermann presents ground breaking work on the Jewish reception of Proclus, focusing on the work of Joseph Solomon Delmedigo (1591-1655), while Stephen …

Implementing Pharmacy-Based Travel Health Services: Insight And Guidance From Frontline Practitioners, Tania Gregorian, Albert Bach, Karl Hess, Keri Hurley, Edith Mirzaian, Jeff Goad

Pharmacy Faculty Articles and Research

PURPOSE In California, the passage of SB493 in July of 2013 was a milestone in advancing pharmacy practice. Among other things, the new legislation allows pharmacists to provide routine immunizations without a protocol and furnish medications for international travelers for conditions not requiring a diagnosis. When developing a pharmacist-run travel health service, consideration must be given to multiple important factors, including pharmacist training, physician partnership, logistics, from scheduling to documentation, and the resources necessary to provide a travel health service.5 This article sets out to provide guidance and insight to pharmacists seeking to implement a travel health service.

SUMMARY Travel …

Engineered Peptides For Applications In Cancer-Targeted Drug Delivery And Tumor Detection, R. Soudy, N. Byeon, Y. Raghuwanshi, S. Ahmed, A. Lavasanifar, Kamaljit Kaur

Pharmacy Faculty Articles and Research

Cancer-targeting peptides as ligands for targeted delivery of anticancer drugs or drug carriers have the potential to significantly enhance the selectivity and the therapeutic benefit of current chemotherapeutic agents. Identification of tumor-specific biomarkers like integrins, aminopeptidase N, and epidermal growth factor receptor as well as the popularity of phage display techniques along with synthetic combinatorial methods used for peptide design and structure optimization have fueled the advancement and application of peptide ligands for targeted drug delivery and tumor detection in cancer treatment, detection and guided therapy. Although considerable preclinical data have shown remarkable success in the use of tumor targeting …

Stories Of Hope And Ethnic Identification: A Look At Organ Donation Communication, Justin Kavlie

Communication

The purpose of this study was to examine the effects of ethnic identification and ethnic portrayals in organ donation stories on the attitudes towards organ donation, the intent to register to become an organ donor, and the intent to discuss organ donation with friends and family. An online experiment was conducted where 202 undergraduate participants viewed one of three randomly selected ethnic portrayal conditions: African-American, Caucasian, and Hispanic. Following data collection, the participants were split along the median into high and low ethnic identification for the analysis. There were no significant interaction effects found between ethnic identification and the different …

Strategic Communication In Public Schools: A Communication Audit Of A Midwestern School District, Jacqueline Dawn Pleggenkuhle

Communication

School districts are complex organizations which require the use of strategic communication. Measuring the communication from school leaders to their various audiences for message content and alignment has the potential to illuminate the current reality of school communication practices as well as point to areas of needed improvement. The current study measures strategic communication by conducting a communication audit of the fastest growing school district in Iowa, by interviewing 10 school leaders and analyzing essential communication products including 26 web pages and 10 district newsletters. Guided by current research on school communication and branding by universities, the communication audit measures …

Reflections On Assessment, Diagnosis And Formulation, Rudi Dallos

More Faculty of Health Research

This editorial introduces the first of two special sections devoted to the exploration of different types of assessment and their applications in a variety of clinical contexts. Assessment has a long history in clinical child psychology and psychiatry and continues to be at the basis of clinical practice. It makes obvious sense to assume that our practice should be based on thorough assessment but a question that follows is – assessment of what? Traditionally assessment has focussed on the ‘presenting ‘ problem of the child that has come to be referred to a service. This of course occurs through a …

Online Defect Tracking System, Gaurav Soni

Computer Science

For Improving Software Reliability, Defect Tracking System (DTS) gives the facility to define the tasks and allow the managers to track the Defects and time spent by each employee for that particular task. This tool can help managers for Defects (Bugs) estimation per project. This tool also helps employees to document their Defects and analyze the quality of their output. Moreover the project aims at creation of a Defect Tracking System which will be accessible to all developers and its facility allows to focusing on creating the database schema and while letting the application server define table based on the …

Teaching Software Testing Concepts Using Learning Objects, Judi Lynn Simley

Computer Science

The ubiquitous nature of software, it is very important to prepare students for jobs in the software industry. There is a profound deficiency in testing skills in graduating students when beginning jobs in Information Technology Industry. This paper describes a means of teaching software testing concepts and tools in introductory computer courses using a Web-based Repository of Software Testing Tutorials: A Cyber-Learning Environment (WReSTT-CyLE). WReSTT-CyLE is a collaborative interactive eLearning environment for testing tools and concepts. The site was created to be student centered and to motivate testing concepts learning. This environment’s design is customizable for Instructors’ individual needs. Another …