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2023

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Predictive Abilities Of Neuropsychological Measures On Functional Outcomes In The Mild Cognitive Impairment (Mci) And Dementia Populations, Morgan Bare Jan 2023

Predictive Abilities Of Neuropsychological Measures On Functional Outcomes In The Mild Cognitive Impairment (Mci) And Dementia Populations, Morgan Bare

PCOM Psychology Dissertations

During the aging process, a decline in ability to perform everyday tasks is commonly observed. This is increasingly so for those with dementia and is a diagnostic requirement. These daily tasks require certain cognitive skills which can be measured by various neuropsychological measures. The purpose of this study is to examine which neuropsychological measures are able to detect various deficits in self-reported activities of daily living (ADL) and instrumental activities of daily living (IADL) in individuals with mild cognitive impairment (MCI) and dementia. It is hypothesized that Trail Making Test– B (TMT-B) would be the most sensitive predictor in functional …

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Evaluation Of Feed Additives And Delivery Method For Receiving And Finishing Cattle, Thiago Lauro Maia Ribeiro Jan 2023

Evaluation Of Feed Additives And Delivery Method For Receiving And Finishing Cattle, Thiago Lauro Maia Ribeiro

Electronic Theses and Dissertations

Trace minerals (TM) and vitamins are essential to improve production output and efficiency in beef cattle. The first experiment was conducted to investigate if the delivery method of TM and Saccharomyces cerevisiae yeast culture influence growth performance and hepatic TM content of receiving steers. The second experiment evaluated the effect of supplemental protected B - vitamins to finishing steers. Experiment 1 used Charolais x Angus steers calves (n = 192; 256 ± 14 kg) in a 49-d receiving experiment. Within 36h of weaning, steers were weighed, allotted to 24 pens (n = 8 steers/pen; 8 pens/treatment) and randomly assigned to …

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In-Vivo Assessment Of A Direct-Fed Microbial On Lactation Performances, Blood Biomarkers, Ruminal Fermentation And Microbial Abundance In Transition To Mid-Lactation Holstein Cows, Marcela Bulnes Lopez Jan 2023

In-Vivo Assessment Of A Direct-Fed Microbial On Lactation Performances, Blood Biomarkers, Ruminal Fermentation And Microbial Abundance In Transition To Mid-Lactation Holstein Cows, Marcela Bulnes Lopez

Electronic Theses and Dissertations

The transition period is a crucial stage in the lactation cycle and can lead to significant metabolic changes in cows. The use of nutritional interventions, such as direct-fed microbials, may assist cows during the transition from pregnancy to early lactation, reducing the occurrence of metabolic disorders and improving overall health. The primary goal of this study was to assess the effects of a commercial rumen-derived directfed microbial (DFM) product (Galaxis™ Frontier (GF) Native Microbials Inc., CA, USA) on various factors such as performance, blood biomarkers, rumen fermentation, and bacterial population in dairy cows during the transition period up to 100 …

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Development Of Novel Cellular Assay Model And Therapeutic Deep Eutectic Solvents To Optimize The Activity Of Anticancer Agents, Nizam Uddin Jan 2023

Development Of Novel Cellular Assay Model And Therapeutic Deep Eutectic Solvents To Optimize The Activity Of Anticancer Agents, Nizam Uddin

Electronic Theses and Dissertations

Multidrug resistance (MDR) is the major burden behind chemotherapeutic treatment failure. It is the principal mechanism by which cancer cells evade chemotherapeutic treatment. As a result, aggressive cancer cells survive and continue uncontrolled cell division. Multidrug resistance affects survival rate of almost all types of cancer patients and death toll rises at an alarming rate. There are seven different mechanisms for evolving MDR. The most common mechanism in efflux activity of overexpressed ABC transporters. MRP1 is a prominent ABC transporter that pumps out a wide variety of anticancer drugs from the cells and thereby reduces intracellular drug concentrations and develops …

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Design, Synthesis, And Biological Evaluation Of Novel Steroidal Analogs: Potential Anticancer Agents, Trevor Ostlund Jan 2023

Design, Synthesis, And Biological Evaluation Of Novel Steroidal Analogs: Potential Anticancer Agents, Trevor Ostlund

Electronic Theses and Dissertations

Cancer is a malicious disease with low survivability rates primarily due to lack of reliable treatment options. Treatments are often non-specific for patients, and cancer resistance to treatment is becoming more prevalent as fast as new therapies are created. Previous studies in our laboratory have focused on the Epidermal Growth Factor Receptor (EGFR) and its downstream kinase family members as a key target for cancer. This cascade controls cell proliferation, anti-apoptotic effects, cell regulation, and other survival factors. Additionally, ABC transporters, responsible for efflux of chemotherapeutic material from cells, are key targets to combat drug resistance. We first evaluated a …

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Physically Adjusted Neutral Detergent Fiber System: Effects Of Dextrose And Non-Forage Fiber On Performance, Feeding Behavior, Digestibility, Rumen Fermentation And Rumen Bacterial Abundance In Dairy Cattle, Jorge Luis Bonilla Urbina Jan 2023

Physically Adjusted Neutral Detergent Fiber System: Effects Of Dextrose And Non-Forage Fiber On Performance, Feeding Behavior, Digestibility, Rumen Fermentation And Rumen Bacterial Abundance In Dairy Cattle, Jorge Luis Bonilla Urbina

Electronic Theses and Dissertations

The newly proposed physically adjusted NDF system (paNDF) system aims to maintain a favorable rumen environment (e.g., pH) by taking into account both the physical and chemical composition of diet. Thus, the objective of this study was to determine the effects of water-soluble carbohydrates (WSC) and non-forage NDF inclusion in a paNDF system on production performance, rumen pH and fermentation profile, rumen bacterial abundance, feeding behavior and nutrient digestibility in late-lactating Holstein cows. Nine fistulated multiparous Holstein cows (2nd and 3rd parity) were used in a triplicated 3×3 Latin Square experiment. Each period lasted for 21 d with 14 d …

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Evaluation Of Yeast Postbiotic In Sow Diets On Sow And Offspring Performance And Microbial Succession, Joel Kieser Jan 2023

Evaluation Of Yeast Postbiotic In Sow Diets On Sow And Offspring Performance And Microbial Succession, Joel Kieser

Electronic Theses and Dissertations

Litter size and the resulting nutritional demand on the sow continue to increase while sow mortality and culling rate are also increasing. Non-nutritive feed additives may enhance sow health and thereby improve offspring growth and productivity after weaning. Development of the gut microbiome in piglets via microbial succession is critical for maximizing their productivity and providing stability for overcoming weaning stress. The objective of this study was to evaluate the impact of yeast-based postbiotic supplementation in gestation and lactation diets on offspring performance through the nursery period and on whether a yeast postbiotic could impact the sow fecal microbiome as …

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Soil Health Influenced By Livestock And Cover Crops Integration In Row Cropping Systems In South Dakota, Namrata Ghimire Jan 2023

Soil Health Influenced By Livestock And Cover Crops Integration In Row Cropping Systems In South Dakota, Namrata Ghimire

Electronic Theses and Dissertations

No abstract provided.

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Effect Of Genotypes On Rancidity Development During Storage Of Naked Oats, Aastha Gautam Jan 2023

Effect Of Genotypes On Rancidity Development During Storage Of Naked Oats, Aastha Gautam

Electronic Theses and Dissertations

Oats, rich in lipids, lipase, and unsaturated fatty acids, can develop bitterness from triglyceride hydrolysis and unpleasant aromas through unsaturated fatty acid oxidation. To counteract these effects, the processing of hulled oats includes kilning, a step aimed at inactivating the enzymes responsible for lipid degradation. Kilning plays a crucial role in preserving the quality of oats by preventing undesirable flavors development linked to lipid breakdown. Despite the benefits of free threshing and absence of a dehulling requirement in naked oats, assessing lack of enzyme inactivation during processing is crucial for potential storage rancidity issues. Our aim was to determine the …

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Comprehensive Analysis And Forensic Investigation Of Cyanide, Thiocyanate, And 2-Amino-2-Thiazoline-4-Carboxylic Acid In-Ante- And Postmortem Blood Utilizing Advanced Analytical Techniques, Abdullah Hamad Alluhayb Jan 2023

Comprehensive Analysis And Forensic Investigation Of Cyanide, Thiocyanate, And 2-Amino-2-Thiazoline-4-Carboxylic Acid In-Ante- And Postmortem Blood Utilizing Advanced Analytical Techniques, Abdullah Hamad Alluhayb

Electronic Theses and Dissertations

Cyanide (CN), present as cyanide anion (CN-) or hydrogen cyanide (HCN), is a deadly poison. The main mechanism of CN toxicity is blocking terminal electron transfer, leading to cellular hypoxia, cytotoxic anoxia, and potential death. Determining blood CN concen-trations along with its major metabolite, thiocyanate (SCN-), is crucial. A sensitive method for concurrent detection of CN and SCN- from human ante- and post-mortem blood via liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) analysis was devel-oped. The method involved active microdiffusion with chemical modification using naph-thalene-2,3-dicarboxaldehyde (NDA) and taurine, while monobromobimane (MBB) mod-ification was used for SCN-. The method showed good sensitivity for …

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Phosphate2 And Pin-Likes7 Affect Symbiotic Nodule Phenotypes In Soybean, Bhawandeep Kaur Jan 2023

Phosphate2 And Pin-Likes7 Affect Symbiotic Nodule Phenotypes In Soybean, Bhawandeep Kaur

Electronic Theses and Dissertations

Legumes and soil rhizobia share a symbiotic relationship, wherein rhizobia fix atmospheric dinitrogen in exchange for photosynthates from the host plant. This exchange of mutual benefits occurs in a specialized root structure called ‘nodule’. Soybean (Glycine max) nodules arise from root outer cortical cells. De novo cell differentiation of cortical cells during nodule development leads to the formation of two distinct nodule zones in the mature nodule: the central infection zone where nitrogen fixation occurs and the peripheral parenchyma zone that houses vascular bundles. Plant signaling mechanisms that dictate the development of these nodule zones are not known. To address …

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Factors Influencing Mortality Of Bighorn Sheep (Ovis Canadensis), Emily Moberg Jan 2023

Factors Influencing Mortality Of Bighorn Sheep (Ovis Canadensis), Emily Moberg

Electronic Theses and Dissertations

Reintroduced bighorn sheep (Ovis canadensis) in Nebraska faced a devastating pneumonia epizootic resulting in variable ewe reproductive success and poor lamb recruitment in many of the herds. From 2015-2017, no lamb recruitment was observed in the northern Pine Ridge subpopulation and as many as 60% of adults died. This was in stark contrast to the healthier Wildcat Hills herds to the south, where lamb recruitment was estimated to be between 50-70% during the same years. From 2018-2020, we radio-collared and recaptured 76 adult female bighorn sheep from 2 of 3 Pine Ridge herds and 1 of 2 Wildcat Hills herds. …

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Sdf-1 Induces Directional Chemotaxis Of Endogenous Bmscs At The Intervertebral Fusion Site And Promotes Osteogenic Differentiation By Regulating Wnt/Ss-Catenin In The Bone Marrow Chimera Spinal Intervertebral Fusion Mouse Model, Qiwen Zhang, Ning Liang, Bin He, Siyou Wu, Depeng Wen, Xiaoyong Tang, Xiongcheng Shen Jan 2023

Sdf-1 Induces Directional Chemotaxis Of Endogenous Bmscs At The Intervertebral Fusion Site And Promotes Osteogenic Differentiation By Regulating Wnt/Ss-Catenin In The Bone Marrow Chimera Spinal Intervertebral Fusion Mouse Model, Qiwen Zhang, Ning Liang, Bin He, Siyou Wu, Depeng Wen, Xiaoyong Tang, Xiongcheng Shen

Turkish Journal of Biology

Clinical observations show that the current spinal fusion with internal fixation has a nonfusion rate of 5%-35%; however, methods to promote spinal fusion are limited. This study aimed to investigate the role of SDF-1-induced directional chemotaxis of BMSCs in bone marrow chimera spinal intervertebral fusion mouse model. BMSCs were isolated from bone marrow and identified by detecting CD44/CD34 positive cells. BMSCs (GFP-BMSCs) were labeled with GFP for tracking in vivo. Mice were inoculated with GFP-BMSCs to construct bone marrow chimera spinal intervertebral fusion model, which were divided into BM-SIF model, BM-SIF+SDF-1, BM-SIF+SDF-1-Anta group. The callus area of intervertebral fusion site …

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Hydroquinidine Displays A Significant Anti-Carcinogenic Activity In Breast And Ovarian Cancer Cells Via Inhibiting Cell-Cycle And Stimulating Apoptosis, Mervenur Yavuz, Betül Şahi̇n, Ahmet Tarik Baykal, Turan Demi̇rcan Jan 2023

Hydroquinidine Displays A Significant Anti-Carcinogenic Activity In Breast And Ovarian Cancer Cells Via Inhibiting Cell-Cycle And Stimulating Apoptosis, Mervenur Yavuz, Betül Şahi̇n, Ahmet Tarik Baykal, Turan Demi̇rcan

Turkish Journal of Biology

Breast and ovarian cancers are women's most commonly diagnosed cancers. Seeking an efficient anticarcinogenic compound is still a top priority regarding the aggressiveness of these cancers and the limited benefit of current therapies. Hydroquinidine (HQ) is a natural alkaloid used in arrhythmia and Brugada syndrome. As an ion channel blocker, HQ exhibits its activity by altering ion gradient and membrane potential. Considering the growing evidence of ion channel blockers' antineoplastic potential, we were prompted to test HQ's effect on breast and ovarian cancers. MCF-7 and SKOV-3 cell lines were used to inspect how HQ acts on survival, clonogenicity, migration, tumorigenicity, …

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Rpi-1 (Human Dcdc2) Displays Functional Redundancy With Nephronophthisis 4 In Regulating Cilia Biogenesis In C. Elegans, Oktay İsmai̇l Kaplan Jan 2023

Rpi-1 (Human Dcdc2) Displays Functional Redundancy With Nephronophthisis 4 In Regulating Cilia Biogenesis In C. Elegans, Oktay İsmai̇l Kaplan

Turkish Journal of Biology

Projecting from most cell surfaces, cilia serve as important hubs for sensory and signaling processes and have been linked to a variety of human disorders, including Bardet-Biedl Syndrome (BBS), Meckel-Gruber Syndrome (MKS), Nephronophthisis (NPHP), and Joubert Syndrome, and these diseases are collectively known as a ciliopathy. DCDC2 is a ciliopathy protein that localizes to cilia; nevertheless, our understanding of the role of DCDC2 in cilia is still limited. We employed C. elegans to investigate the function of C. elegans RPI-1, a Caenorhabditis elegans ortholog of human DCDC2, in cilia and found that C. elegans RPI-1 localizes to the entire ciliary …

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Astragaloside Iv Improves Renal Function And Alleviates Renal Damage And Inflammation In Rats With Chronic Glomerulonephritis, Dong Zhang, Zongying Li, Yuan Gao, Hailing Sun Jan 2023

Astragaloside Iv Improves Renal Function And Alleviates Renal Damage And Inflammation In Rats With Chronic Glomerulonephritis, Dong Zhang, Zongying Li, Yuan Gao, Hailing Sun

Turkish Journal of Biology

From Astragalus membranaceus (Fisch.) Bge.var. mongholicus (Bge.) Hsiao, astragaloside IV (AS-IV), a saponin can be purified and is considered traditional Chinese medicine. The purpose of this study was to evaluate the AS-IV-mediated mechanism on chronic glomerulonephritis (CGN). A cationic bovine serum albumin-induced CGN rat model was established and 10, 15, or 20 mg/kg of AS-IV was administered to measure renal function and inflammatory infiltration. Influences of AS-IV on proliferation, cell cycle, and inflammation of LPS-induced rat mesangial cells (RMCs) were determined. The results demonstrated that AS-IV alleviated renal dysfunction, renal lesions, and inflammation in CGN rats. AS-IV prolonged the G0-G1 …

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A Ph-Responsive Shell-Sheddable Polymeric Nanoparticles As The Photodynamic Drug Carrier: Synthesis, Characterization, And In Vitro Studies, Jing Lu Jan 2023

A Ph-Responsive Shell-Sheddable Polymeric Nanoparticles As The Photodynamic Drug Carrier: Synthesis, Characterization, And In Vitro Studies, Jing Lu

Turkish Journal of Biology

Shell-sheddable nanoparticles, composed of amphiphilic blockpolymers, have emerged as an attractive vehicle for the site-specific delivery of therapeutic agents. In this study, pH-responsive sheddable copolymers bearing an orthoester linker were synthesized via the ring-opening polymerization between γ-benzyl-L-glutamate N-carboxyanhydride and orthoester-bearing poly (ethylene glycol) macroinitiator (PEG-pH-NH2). The obtained poly (ethylene glycol)-b-poly(γ-benzyl-L-glutamate) (PEG-PBLG) could form stable nanoparticles in aqueous solutions due to the amphiphilic nature of the block copolymers. The PEG-PBLG-based nanoparticle exhibited good stability in physiological conditions (pH 7.4), whereas the nanoparticle was disassembled under acidic conditions (pH 5.0). The nanoparticles could encapsulate a photosensitizer, protophorphyrin IX …

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Methionine Restriction And Cancer Treatment: A Systems Biology Study Of Yeast To Investigate The Possible Key Players, Esra Börklü Jan 2023

Methionine Restriction And Cancer Treatment: A Systems Biology Study Of Yeast To Investigate The Possible Key Players, Esra Börklü

Turkish Journal of Biology

Background/aim: Dietary restriction, mainly carbon and/or methionine restriction are among the upcoming supporting interventions along with chemotherapy in various cancers. Although dietary restriction has been proven to be beneficial, the main cellular machineries affected by its administration lacks deeper information considerably, a notable pitfall in its use as a personalized nutritional approach. Materials and methods: In this study, cellular effects of methionine restriction on a yeast model are explored via systems biology approaches. The methionine biosynthesis network, constructed by integrating interaction data with gene ontology terms, was analysed topologically, and proved to be informative about the intertwined relationship of methionine …

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The Three E’S Of Horn Repertoire: From Excerpts To Etudes To Employment, Briana Pepilascov-Childers Jan 2023

The Three E’S Of Horn Repertoire: From Excerpts To Etudes To Employment, Briana Pepilascov-Childers

Theses and Dissertations--Music

This project explores effective solutions for practicing orchestral excerpts, a challenge often faced by young musicians preparing for auditions. It introduces a method of adapting practice ideas and composition to facilitate a more profound understanding of fifteen orchestral excerpts. While primarily directed at horn players, the concepts and techniques explored in this study are applicable to musicians of all instruments, offering specific ideas, practice tips, and original etudes tailored to each excerpt. These etudes serve a dual purpose by addressing technical aspects of both the horn and the excerpt itself while familiarizing the musician with the standard orchestral repertoire commonly …

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Synthesis And Characterization Of Soybean Feedstock-Based Composite Systems For Sustainable Material Application., Temofeh Nathaniel Esenamunjor Jan 2023

Synthesis And Characterization Of Soybean Feedstock-Based Composite Systems For Sustainable Material Application., Temofeh Nathaniel Esenamunjor

Theses and Dissertations

This study explores the synthesis and characterization of soybean-based composites with a focus on their potential for sustainable material applications. Soybean meal (SBM), known for its high protein content, is blended with the biopolymer polylactic acid (PLA) using eco-friendly manufacturing processes. The solvent casting and hot-pressing methods are employed to fabricate composites, and their mechanical and thermal properties are investigated. Tensile strength of the composites decreases with higher concentrations of soybean meal, while thermal properties remain comparable to PLA. The hot press method, optimized at 250°C and 235 MPa, shows promising results in enhancing compressive strength with increased SBM concentration …

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The Human-Canine Bond: Levels Of Stress Among Military Spouses During Deployments, Angela L. De Leon-Muniz Jan 2023

The Human-Canine Bond: Levels Of Stress Among Military Spouses During Deployments, Angela L. De Leon-Muniz

Walden Dissertations and Doctoral Studies

Previous research has found that deployment may impact military spouses’ emotional wellbeing and attachment with family members. There remains a critical gap in the literature regarding difference in stress levels between military spouses who own canines and those who do not. The theoretical foundations for this study were Bowlby’s attachment theory and Bowen’s family systems theory. Research questions included exploring the relationships between (a) pet canine ownership, deployment length of time, and military spouses’ stress levels, and (b) pet canine owners’ pet attachment and stress experienced, when their significant others are deployed. The sample comprised 82 spouses with deployed military …

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Enhancing Resin Composite Using Nanoparticle Embedded Jute Fiber And Exploring Plant Polymer For Biomedical Applications, Md Sultan Mahmud Jan 2023

Enhancing Resin Composite Using Nanoparticle Embedded Jute Fiber And Exploring Plant Polymer For Biomedical Applications, Md Sultan Mahmud

Theses and Dissertations

The severe detrimental effect of nondegradable and toxic synthetic materials on the environment in the last couple of decades has led researchers to focus more on eco-friendly products such as building materials, medical instruments, sports, textile, and automobile industries. Lignocellulosic plants and their fibers are the first choices for both material and biological science researchers due to their chemical structure, abundance, low cost, and nontoxic nature. These plants are composed of three major biopolymers such as cellulose, hemicellulose, and lignin. Cellulose is the most abundant polymer. In the recent past natural fibers have attracted substantial importance as potential structural materials …

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The Effect Of Sterol Carrier Protein 2 Gene Ablation And Dietary Cholesterol On Brain And Liver Lipid Composition In Male And Female Mice, Madison Jochim Jan 2023

The Effect Of Sterol Carrier Protein 2 Gene Ablation And Dietary Cholesterol On Brain And Liver Lipid Composition In Male And Female Mice, Madison Jochim

Theses and Dissertations

Previous studies have shown that sterol carrier protein 2 (SCP-2) and sterol carrier protein x (SCP-x) are important for mediating the transfer of phospholipids, cholesterol and other sterols within the cell. However, the differences between males and females regarding the impact SCP2 has on brain and liver lipid metabolism is unknown. To further understand this, we profiled the effects of SCP2 gene ablation on brain and liver lipid metabolism in male and female mice fed a high fat diet or control diet and analyzed phospholipid and neutral lipid mass and composition using HPLC and TLC. In brains of male mice, …

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Community College Faculty Perceptions Of Open Educational Resources, Heather Ann Leavitt Jan 2023

Community College Faculty Perceptions Of Open Educational Resources, Heather Ann Leavitt

Theses and Dissertations

This study examined Open Educational Resources (OER) through a community college faculty perspective. Specifically, this study aimed to gain a deeper understanding of faculty motivations surrounding OER, faculty perceptions of OER’s influences on students, and pedagogical changes that faculty have made in response to OER. A qualitative research methodology was chosen, including semi-structured phenomenological interviews conducted with community college faculty members. The methodology was guided by activity theory. Faculty discussed their use of the 5 Rs (retain, reuse, revise, remix, redistribute) in practice, with revise being the most commonly used of the 5 Rs. Notably, the eight participants had mixed …

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Kinesio Tape Effect On Vertical Jump, Jalen L. Morrison Jan 2023

Kinesio Tape Effect On Vertical Jump, Jalen L. Morrison

Theses and Dissertations

KinesioTape is used throughout sports at all levels of competition. This study aims at augmenting vertical jump performance with the use of KinesioTape. Vertical jumping ability is a crucial skill and advantage in various sports, as it impacts an individual’s ability to achieve height, power, and efficiency during the jumping phase. Though training methods have proven to improve vertical jump, the potential of a Kinesiotape design remains somewhat unanswered in this context. This test aims to determine whether our tape design is significantly effective in countermovement and squat jumps. The research includes a comprehensive literature review to understand today's KinesioTape …

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The Effects Of Demographic And Nutritional Variables On Anxiety And Depression Symptoms In Usa And Non-Usa Adults, Jonathan Santiago Jan 2023

The Effects Of Demographic And Nutritional Variables On Anxiety And Depression Symptoms In Usa And Non-Usa Adults, Jonathan Santiago

Theses and Dissertations

The present study investigated the effects of demographic variables (e.g. country of residence and socioeconomic status) and nutritional variables (e.g. dietary diversity and micronutrient content) on anxiety and depression symptoms, as well as subjective health self-rating. Prior research suggests that a variety of demographic and nutritional factors influence chronic stress, which can cause systemic inflammation and lead to various cardiovascular-related diseases. Participants (USA=41; Non-USA= 58) were recruited via an online platform and completed demographic questionnaires and a 24-hour dietary recall. Results indicated that food accessibility emerged as the strongest predictor, and was associated with anxiety, depression, and combined mood symptoms. …

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Synthesis And Characterization Of Cellulose Acetate Based Bio-Composites, Enoch Kehinde Sofowora Jan 2023

Synthesis And Characterization Of Cellulose Acetate Based Bio-Composites, Enoch Kehinde Sofowora

Theses and Dissertations

Sustainability has become a critical component of materials research. Plastic disposal is a major problem facing us. Along with recycling, bioplastics have emerged as a potential solution. However, bioplastics have only found limited applications because of their weak mechanical properties. Hence numerous research is being done in the application of reinforcement additives in bioplastics to develop bioplastic composites or blends with improved properties. This study explores using renewable and biodegradable natural fibers as well as agricultural biomass wastes as reinforcement additives to enhance the properties of bioplastics. This also provides the opportunity to valorize agricultural biomass wastes. Solvent casting is …

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The Effects Of Secondary Traumatic Stress And Resilience On The Indicators Of Compassion Fatigue Among Occupational Therapists, Gayla Ann Aguilar Jan 2023

The Effects Of Secondary Traumatic Stress And Resilience On The Indicators Of Compassion Fatigue Among Occupational Therapists, Gayla Ann Aguilar

Walden Dissertations and Doctoral Studies

AbstractCompassion fatigue (CF) has been described as the “cost of caring” for traumatized individuals, which may lead to missed workdays, diminished work satisfaction, increased turnover, and decreased client care. CF has long been studied in other caring professionals, but occupational therapy practitioners (OTPs) have been largely overlooked. The purpose of this quantitative correlation study was to determine the relationship between secondary traumatic stress (STS) and resilience (RES) on burnout (BO) and compassion satisfaction (CS; i.e., indicators of CF) in OTPs. In this study, the moderation effect that RES has on STS and BO as related to CF in 68 completed …

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Research Task 02 Lexical Item Booklet, Pdf File Jan 2023

Research Task 02 Lexical Item Booklet, Pdf File

El Español de Nuevo México y Colorado Contemporáneos

No abstract provided.

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Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang Jan 2023

Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang

Walden Dissertations and Doctoral Studies

Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …

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