Life Sciences Commons^™

Influence Of Approach Angle On Ball Velocity During The American Football Instep Placekick, Kristoph C. Lopata

Master's Theses and Doctoral Dissertations

High ball velocity in American football placekicking (PK) enhances the opportunity to score during competition. Insight into self-selected (SS) approach angle and whether an optimal angle exists for maximal ball velocity may improve performance. Methods: Three selected approach angles (30°, 45°, 60°) and a SS approach angle were assessed to analyze kicking velocity among 11 intercollegiate male kickers. Descriptive statistics analyzed SS angles, and a one-way repeated measures ANOVA with the significance level set a p < .05 compared maximal ball velocity between angles. Results: Mean SS angle was 37.25° ± 3.67, and the SS and 45° approach produced the highest maximal ball velocities; however, no approach angle (SS, 30°, 45°, 60°) differed significantly F(3, 30) = 1.869, p < .156. Conclusions: Approach angle did not significantly affect maximal ball velocity. However, future studies are needed with larger sample sizes and diverse placekicking populations who are participating in American football.

Emissions, Shawn Urbanski, Susan O'Neill, Amara L. Holder, Sarah Green, Rick L. Graw

Michigan Tech Publications, Part 1

This chapter assesses the current state of the science regarding the composition, intensity, and drivers of wildland fire emissions in the USA and Canada. Globally and in the USA wildland fires are a major source of gases and aerosols which have significant air quality impacts and climate interactions. Wildland fire smoke can trigger severe pollution episodes with substantial effects on public health. Fire emissions can degrade air quality at considerable distances downwind, hampering efforts by air regulators to meet air standards. Fires are a major global source of aerosols which affect the climate system by absorbing and scattering radiation and …

Effects Of Some Commercial Products On Root And Crown Rot Caused By Phytophthora Cactorum In Apple Cultivation, Suat Kaymak

Turkish Journal of Agriculture and Forestry

Root and crown rot caused by Phytophthora cactorum (Lebert & John) Schroeter is one of the most common diseases of apple (Malus domestica) in the world. Due to the negative influences of fungicides on the environment, using other applicable control measures is a plausible way for the management of the disease. The objective of the study was to evaluate the effects of eleven commercial products (bio-pesticides, fertilizers, and activators) on P. cactorum by comparing plant growth parameters (trunk diameter, plant height, number of branches, and root dry weight). Trials were conducted according to a randomized complete block design with three …

Characterization Of Volatile Compounds Nongrafted And Pumpkin-Grafted Bitter Gourd(Momordica Charantia L.), Arzu Karataş, Yusuf Şavşatli

Turkish Journal of Agriculture and Forestry

Bitter melon (Momordica charantia L.) is a unique vegetable-fruit possessing several multifarious health benefits. In this study, the plant extraction obtained from grafted bitter gourd onto pumpkin (Cucurbita maxima) and nongrafted bitter gourd cultivated under greenhouse conditions were evaluated for their constituents of volatile compounds. Gas chromatography-mass spectrometry (SPMEGC-MS) techniques were employed to determine these compounds in the leaves (young, middle, and old-age) and fruits (unripe and ripe) of bitter gourd. The volatile compounds in the leaves of pumpkin during the three stages mentioned above were also investigated. Overall, 72 in leaves and 56 in fruits of bitter gourd compounds …

Morphological Characterisation And Volatile Analysis Of Turkish Garlic Genotypes, Selen Akan

Turkish Journal of Agriculture and Forestry

Garlic is one of the most important vegetables and used for nutrient and medicinal purposes since ancient times. Deficiency in the detection of high-quality garlic genotypes with a rich biochemical profile is one of the main constraints in limiting the production. Currently, the selection and identification of promising garlic genotypes is a popular target, and to reach the best results it is necessary to clarify discrimination. This study aims to discriminate the garlic genotypes obtained from different cultivation locations in Turkey. For that purpose, firstly, morphological characters including biometric parameters were measured based on 18 morphological traits. Particular correlations related …

Assessment Of Safflower Genotypes For Individual And Combined Effects Of Drought And Salinity Stress At Early Seedling Growth Stages, Fatma Kayaçeti̇n

Turkish Journal of Agriculture and Forestry

Safflower is a highly valued oilseed crop. Safflower oil is a source of monounsaturated and polyunsaturated fatty acids which are important for a plurality of industries including the edible vegetable oil industry. Safflower is highly resistant to salinity and drought stress, which impede seed germination. Two safflower cultivars and 4 lines were screened against nine levels of osmotic stress treatments (using NaCl0 and PEG 60000 (control), NaCl-0.2, NaCl-0.4, PEG 6000-0.2, PEG 6000-0.4, PEG 6000-0.2+NaCl-0.2, PEG 6000-0.2+NaCl-0.4, PEG 6000-0.4+NaCl-0.2, PEG 6000-0.4+NaCl-0.4 MPa) for 8 days at seed germination stage. The osmotic stress was observed to induce a negative effect on the …

Integrated Application Of Plant Growth Promoting Rhizobacteria And Biochar Improves Salt Tolerance In Eggplant Seedlings, Razi̇ye Kul

Turkish Journal of Agriculture and Forestry

A pot study was conducted to determine the effects of the combination of plant growth promoting rhizobacteria (PGPR) and biochar on the growth, physiological, and biochemical characteristics of eggplant seedlings under salinity stress. The greenhouse experiment included two salinity levels of NaCl [S0 (0 mM NaCl) and S1 (100 mM NaCl)], three biochar levels [B0 (non-biochar), B1 (5%) and B2 (10%)] and two PGPR [R0 (non-PGPR), R1 (combination of Bacillus megaterium TV-6D, Paenibacillus polymyxa KIN- 37, and Pantoea agglomerans RK92). Results showed that plant growth, relative leaf water content (LRWC), and chlorophyll content of eggplant seedlings decreased significantly, while malondialdehyde …

Some Fermentation Parameters Affecting The Cell Growth Of Saccharomyces Cerevisiae And The Qualities Of Black Rice Beverage, Aung Pyae

Chulalongkorn University Theses and Dissertations (Chula ETD)

Black rice (Hom Nil: Oryza sativa) is well-known for their health benefits thanks to their high content in proteins, fibers, vitamins and minerals as well as their abundance in phenolic compounds. These compounds contribute to the color and antioxidant properties of the black rice. Thus, the aim of the study was to conduct fermentation on black rice using two varieties of yeast strains, Saccharomyces cerevisiae SC90 and M30, over the course of 10 days comparing temperature and sucrose adding. The obtained data can be utilized in designing and developing a functional fermented beverage with black rice. In the process, black …

Revisiting Clickers: In-Class Questions Followed By At-Home Reflections Are Associated With Higher Student Performance On Related Exam Questions, Dana L. Kirkwood-Watts, Emily K. Bremers, Emily Robinson, Kathleen R. Brazeal, Brian A. Couch

School of Biological Sciences: Faculty Publications

Clicker questions are a commonly used active learning technique that stimulates student interactions to help advance understanding of key concepts. Clicker questions are often administered with an initial vote, peer discussion, and a second vote, followed by broader classroom explanation. While clickers can promote learning, some studies have questioned whether students maintain this performance on later exams, highlighting the need to further understand how student answer patterns relate to their understanding of the material and to identify ways for clickers to benefit a broader range of students. Systematic requizzing of concepts during at-home assignments represents a promising mechanism to improve …

Effect Of Cinnamon And Nutmeg Essential Oils On The Smoked Meat (Se'i Sapi) Quality, Ulil Afidah

Chulalongkorn University Theses and Dissertations (Chula ETD)

Se’i sapi is a traditional Indonesian smoked meat product that is normally degraded by both microorganisms and lipid oxidation. The aim of this study was to determine the effect of essential oils on the quality of sterilized se’i sapi. Firstly, antioxidant activity and total phenolic compounds of cinnamon (CEO) and nutmeg (NEO) essential oils, and liquid smoke were investigated. It was found that CEO and NEO had good potential on their antioxidant activities, while liquid smoke exhibited very low antioxidant activity. Total phenolic content of CEO and NEO showed a high value, which were 110.64 and 109.13 mg GAE/g, respectively. …

Anti-Neuroinflammatory Effects And Underlying Mechanismsof Cleistocalyx Nervosum Var. Paniala Extracts In Microglia Cells, Sakawrat Janpaijit

Chulalongkorn University Theses and Dissertations (Chula ETD)

Sustained inflammatory responses have been implicated in various neurodegenerative disorders. Cleistocalyx nervosum var. paniala (CN), an edible berry, has been reported to exhibit several beneficial properties. However, only limited research is available on this fruit seed, which is classified as agricultural food waste. We therefore focused on the anti-neuroinflammatory effects and underlying mechanism of C. nervosum var. paniala seed extract (CNSE) on BV-2 mouse microglial cells induced by lipopolysaccharide (LPS) or tumor necrosis factor-alpha (TNF-α). CN seeds were extracted in 95% ethanol by Soxhlet extraction. HPLC was carried out to identified resveratrol (RESV) in CNSE. For cell-based studies, the expression …

Potential Of Oleaginous Yeast Isolated From Natural Sources In Thailand For Biodiesel Production, Nuttha Chuengcharoenphanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

Oleaginous yeast is described as yeast that can accumulate lipid more than 20% of cell dry weight (CDW) and can be used to produce biodiesel as an alternate source. Hence, the goals of this study have three main objectives, including (i) to isolate and identify effective oleaginous yeast strains from natural and industrial sources in Thailand, (ii) to select cellulolytic oleaginous yeast and evaluate the possibility of lipid production, and (iii) to evaluate the potential of using oleaginous yeast for biodiesel production from various agricultural residual waste and grasses as carbon sources. In this study, a newly isolated cellulolytic oleaginous …

Recyclage Primaire Des Matières Résiduelles Électroniques Au Québec : Portrait De La Santé Et De La Sécurité Du Travail Et Appréciation Du Risque Sanitaire, Sabrina Gravel, Bouchra Bakhiyi, Joseph Zayed, Sylvie Gravel, Daniel Côté, Brigitte Roberge, Jacques Lavoie, Loïc Wingert, France Labrèche

Rapports de recherche scientifique

En raison de l’utilisation croissante de composants et d’appareils électriques et électroniques, de même que de leur durée de vie relativement courte, la quantité de matières résiduelles électroniques ne cesse d’augmenter. Conséquemment, le nombre d’entreprises spécialisées dans le recyclage électronique (e-recyclage) est en nette croissance au Québec, comme ailleurs dans le monde. Ces entreprises emploient des travailleurs qui ont pour tâche de démonter les appareils afin d’en trier les composants qui seront subséquemment valorisés ou éliminés de manière sécuritaire. Ces tâches peuvent cependant entraîner l’exposition des travailleurs à un mélange de substances potentiellement toxiques, comprenant entre autres des poussières, des …

Analyse Du Concept De Marge De Manœuvre En Ergonomie Du Point De Vue Du Contrôle De La Motricité Humaine, Philippe Corbeil, André Plamondon, Denys Denis

Rapports de recherche scientifique

Le concept de marge de manœuvre se définit comme la liberté dont dispose un travailleur pour élaborer différentes façons de travailler afin de répondre aux exigences de production, et ce, sans effet défavorable sur sa santé (Coutarel, Caroly, Vézina et Daniellou, 2015; St-Vincent et al., 2011). Une forte charge de travail jumelée à une faible latitude décisionnelle restreint l’élaboration des gestes et pourrait pénaliser ainsi la santé des opérateurs. Les connaissances actuelles des façons de faire des manutentionnaires, qu’ils soient experts ou non, ne nous permettent pas d’apprécier dans sa totalité l’ampleur de cette liberté lorsqu’un individu doit répéter …

Kinetic Mechanism Of Indigo-Producing Indole Monooxygenase From Acinetobacter Baumannii, Kanyarat Suksomjaisaman

Chulalongkorn University Theses and Dissertations (Chula ETD)

Indole, a bicyclic compound comprising a fused benzene and pyrrole ring, serves as a fundamental component in numerous natural compounds. Additionally, indole holds significant importance in industrial applications, particularly in the production of pharmaceutical drugs and agrochemicals. Flavin-dependent indole monooxygenase is an enzyme responsible for hydroxylation of the indole ring. Indole monooxygenase is a two-components: flavoprotein reductase containing FAD as a cofactor, and monooxygenase. The reductase component utilizes NADH to catalyze flavin reduction and transfers the reduced flavin to the monooxygenase component. The hydroxylation of indole by monooxygenase reduced FAD and oxygen as substrates. In this study, we cloned the …

Unique Features Of Alarmone Metabolism In Clostridioides Difficile, Asia Poudel, Astha Pokhrel, Adenrele Oludiran, Estevan J. Coronado, Kwincy Alleyne, Marrett M. Gilfus, Raj K. Gurung, Surya B. Adhikari, Erin B. Purcell

Chemistry & Biochemistry Faculty Publications

The “magic spot” alarmones (pp)pGpp, previously implicated in Clostridioides difficile antibiotic survival, are synthesized by the RelA-SpoT homolog (RSH) of C. difficile (RSH_Cd) and RelQ_Cd. These enzymes are transcriptionally activated by diverse environmental stresses. RSH_Cd has previously been reported to synthesize ppGpp, but in this study, we found that both clostridial enzymes exclusively synthesize pGpp. While direct synthesis of pGpp from a GMP substrate, and (p)ppGpp hydrolysis into pGpp by NUDIX hydrolases, have previously been reported, there is no precedent for a bacterium synthesizing pGpp exclusively. Hydrolysis of the 5′ phosphate or pyrophosphate from GDP …

Deciphering The Role Of Mitochondrial Physiology And Thermal Acclimation In Shaping Whole Organismal Performance Of An Invasive Forest Pest, Essa Alrashdi

Masters Theses

Environmental factors such as temperature are substantial determinants of the spongy moth, L. dispar, distribution, reproduction, and growth. Accumulating energy reserves at the larval stage is particularly important to L. dispar, since the larvae metamorphose into a fully-grown, non-feeding adult. As non-feeding adults, the energy balance of the pupae must be adequate, to ensure enough energy reserves for adult dispersal, egg maturation and overall persistence of the species in the region. At this stage, environmental temperature also determines daily metabolic demands, and the overall cost of sustaining ecologically relevant activities. Various hypotheses describing a mismatched growth and metabolic …

Comparison Of Bigheaded Carp Reproduction In Tributaries Of The Illinois And Wabash Rivers, David J. Yff

Masters Theses

Understanding environmental conditions that support bigheaded carp (Hypophthalmichthys sp.) reproduction in tributary rivers provides key predictions of their invasion throughout the United States. Past research, primarily in larger order rivers, identified factors such as discharge, temperature, and turbidity as main environmental drivers of bigheaded carp reproduction. I used the variable hydrologic conditions between the Illinois and Wabash Rivers to compare environmental conditions between tributaries of each basin, determine which conditions influence bigheaded carp reproduction in tributaries, and predict tributaries likely to support bigheaded carp reproduction. Three tributaries of the Illinois and Wabash Rivers were sampled for ichthyoplankton from …

Differences In The Growth And Bioenergetics Between Centrarchids In A Midwestern Power Plant Lake, Kyle Joseph Rempe

Masters Theses

Black Crappie Pomoxis nigromaculatus and Bluegill Lepomis macrochirus are popular sportfishes that co-occur in similar bodies of water throughout most of the Central and Eastern United States but have distinct thermal physiologies. L. macrochirus is often found in warmer regions of freshwater reservoirs, where P. nigromaculatus tends to exploit cooler regions, especially in power plant cooling reservoirs. The coal-fired Coffeen Power Station ceased energy production in October 2019, providing an ideal scenario to study the organismal effects of the sudden shift in thermal regime. Previous studies showed that P. nigromaculatus inhabited the less thermally-impacted areas of Coffeen Lake, whereas L. …

Oregon State Rank Assessment For Larch Mountain Salamander (Plethodon Larselli), Eleanor P. Gaines

Institute for Natural Resources Publications

Oregon state conservation status assessment for Larch Mountain salamander (Plethodon larselli) using NatureServe methodology, 2022.

Development Of Novel, Miniaturized Sperm Cell Isolation Techniques For Sexual Assault Samples, Brittany Celeste Hudson

Theses and Dissertations

The ever-increasing sexual assault evidence collection kit backlog within the United States has prompted the search (and desperate need) for a more efficient, cost-effective, and rapid processing technique that can separate male and female contributions from evidentiary samples. Although backlogs have largely been tackled across the United States and many technological advancements have made the forensic DNA analysis workflow quicker, techniques for handling sexual assault samples remain time-consuming, tedious, and inefficient at separating cellular fractions from the victim and perpetrator. Thus, this research sought to identify a reproducible sperm isolation method using antibodies and/or alternative differential cell lysis techniques as …

Developmental Validation Of A Bacterial Signature-Based Identification Method Of Forensically Relevant Human Biological Samples, Denise M. Wohlfahrt

Theses and Dissertations

The confirmatory identification of body fluids is one of the most critical steps in criminal investigations, as it provides not only information on the source of the DNA, but it can corroborate evidence, aid in the reconstruction of a crime, and associate evidence with a person of interest. Current serological methods utilize biochemistry and immunology to identify biological evidence; however, these serological tests are mostly presumptive while only testing for one fluid at a time, potentially wasting precious evidence. More recently, forensic investigators have suggested the use of molecular methods such as mRNA, miRNA, or DNA methylation. While each of …

Freshwater Macrophytes Harbor Viruses Representing All Five Major Phyla Of The Rna Viral Kingdom Orthornavirae, Karyna Rosario, Noémi Van Bogaert, Natalia B. López-Figueroa, Haris Paliogiannis, Mason Kerr, Mya Breitbart

Marine Science Faculty Publications

Research on aquatic plant viruses is lagging behind that of their terrestrial counterparts. To address this knowledge gap, here we identified viruses associated with freshwater macrophytes, a taxonomically diverse group of aquatic phototrophs that are visible with the naked eye. We surveyed pooled macrophyte samples collected at four spring sites in Florida, USA through next generation sequencing of RNA extracted from purified viral particles. Sequencing efforts resulted in the detection of 156 freshwater macrophyte associated (FMA) viral contigs, 37 of which approximate complete genomes or segments. FMA viral contigs represent putative members from all five major phyla of the RNA …

The Second Brain: How Gut Microbiomes Contribute To Mental Health And Depression, Connie Lin

The Synapse: Intercollegiate science magazine

No abstract provided.

Iguanodons Throughout The Ages (Illustrations), Patrick Estell

The Synapse: Intercollegiate science magazine

No abstract provided.

Negatives In The Positive Test Results: Anti-Black Healthcare Inequity And Emergent Hiv Therapies, René Garrett

The Synapse: Intercollegiate science magazine

No abstract provided.

Misokinesia: Seen, Not Heard, Ellie Rapp

The Synapse: Intercollegiate science magazine

No abstract provided.

Mothers' Perceptions Of Their Children's Weight: Opportunity For Health Promotion In Kuwait, Abdullah Al-Taiar, Nawal Alqaoud, Reem Sharaf-Alddin, Muge Akpinar-Elci

Community & Environmental Health Faculty Publications

Background: Mothers’ perceptions of their children’s weight remain mostly unknown in oil-rich countries of the Middle East.

Aims: To compare maternal perceptions of their children’s weight with actual body weight.

Methods: We used the Kuwait nutritional surveillance data for 5 consecutive years (2015-2019) (N = 5119), which were collected through face-to-face interviews with mothers of children aged 2-5 years attending vaccination centres.

Results: Of the 5119 mothers in the study, 163 (3.18%) and 332 (6.48%) had obese or overweight children, respectively. Among 4624 mothers who had normal weight children, 1350 (29.20%) perceived their children’s weight as …

Non-Linear Relationships Between Density And Demographic Traits In Three Aedes Species, Logan A. Sauers, Steven A. Juliano, Kelsey E. Hawes

Faculty Publications – Biological Sciences

Understanding the relationship of population dynamics to density is central to many ecological investigations. Despite the importance of density-dependence in determining population growth, the empirical relationship between density and per capita growth remains understudied in most systems and is often assumed to be linear. In experimental studies of interspecifc competition, investigators often evaluate the predicted outcomes by assuming such linear relationships, ftting linear functions, and estimating parameters of competition models. In this paper, we experimentally describe the shape of the relationship between estimated population rate of change and initial density using laboratory-reared populations of three mosquito species. We estimated per …

Maud Gordon Holmes Arboretum List Of Tree Species, Chloe Mokadam

Maud Gordon Holmes Arboretum database

Maud Gordon Holmes Arboretum database of Tree Species.