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Restoring Polyhyrdoxybutyrate (Phb) Depolymerase Expression In A Bald Mutant Of Streptomyces Sp. Sfb5a, Youmna Moawad 2021 Bridgewater College

Restoring Polyhyrdoxybutyrate (Phb) Depolymerase Expression In A Bald Mutant Of Streptomyces Sp. Sfb5a, Youmna Moawad

Honors Projects

Polyhydroxybutyrate (PHB) is a biodegradable, plastic-like polymer produced by some bacteria and degraded by others. The filamentous bacterium Streptomyces sp. SFB5A degrades PHB for growth using an extracellular PHB depolymerase, encoded by the phaZ gene. A morphological mutant of this bacterium, bld4, cannot form aerial filaments and cannot produce PHB depolymerase, despite having the phaZ gene. The inability to synthesize PHB depolymerase may be due to a mutation in a gene encoding one of its transcriptional regulators. A gene (lrp) coding for a potential transcriptional regulator is located 2,700 base pairs upstream from phaZ. Our goal was to clone ...


Local Environmental Variables Are Key Drivers Of Ant Taxonomic And Functional Beta-Diversity In A Mediterranean Dryland, Clara Frasconi Wendt, Ana Ceia-Hasse, Alice Nunes, Robin Verble, Giacomo Santini, Mário Boieiro, Cristina Branquinho 2021 Missouri University of Science and Technology

Local Environmental Variables Are Key Drivers Of Ant Taxonomic And Functional Beta-Diversity In A Mediterranean Dryland, Clara Frasconi Wendt, Ana Ceia-Hasse, Alice Nunes, Robin Verble, Giacomo Santini, Mário Boieiro, Cristina Branquinho

Biological Sciences Faculty Research & Creative Works

The decomposition of beta-diversity (β-diversity) into its replacement (βrepl) and richness (βrich) components in combination with a taxonomic and functional approach, may help to identify processes driving community composition along environmental gradients. We aimed to understand which abiotic and spatial variables influence ant β-diversity and identify which processes may drive ant β-diversity patterns in Mediterranean drylands by measuring the percentage of variation in ant taxonomic and functional β-diversity explained by local environmental, regional climatic and spatial variables. We found that taxonomic and functional replacement (βrepl) primarily drove patterns in overall β-diversity (βtot). Variation partitioning analysis showed ...


Physiological Processes, Chirag B. Raval 2021 CUNY City College

Physiological Processes, Chirag B. Raval

Open Educational Resources

Physiological Processes is designed to introduce fundamental concepts of physiology to biomedical engineering learners. Areas covered include: neural, muscular, cardiovascular, respiratory and renal system function; bioelectrical signals, capillary-level transport, organ-level exchange. Whenever possible, analysis will be quantitative in order to fulfill the course goals and to build the foundation for the subsequent biomedical engineering curriculum. This course is for Biomedical Engineering majors only.


The Periaqueductal Grey In Opioid Tolerance And Chronic Pain, Akila Ram 2021 Utah State University

The Periaqueductal Grey In Opioid Tolerance And Chronic Pain, Akila Ram

All Graduate Theses and Dissertations

Pain is the body’s natural warning system to indicate one is in an environment highly detrimental to survival. The body’s response to the sensation of pain is to immediately withdraw from this environment, ensuring continued survival. However, when pain lasts beyond the window in which it is useful, it no longer serves as a helpful warning system but instead degrades the quality of life. Chronic pain leads to patients seeking opioids to alleviate their condition and regain control of their lives. A severe negative side effect of the use of opioids to treat chronic pain is the development ...


Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe 2021 Morehead State University

Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe

2021 Celebration of Student Scholarship - Oral Presentations

Sediment loads in stream systems play a big role in how overall runoff behaves. Streams naturally transport sediment at various ratios depending on precipitation. When vegetation is removed in upstream environments, sediment loads on streams increase. Sudden increases of sediments in streams can cause many issues, such as flooding or stream re-direction. In Morehead, KY, large-scale logging operations on the ridge above Knapp Avenue and on the ridge above the north end of Allen Avenue have caused increased sediment load in a small stream called Oxley Branch. This stream flows south parallel to Knapp Avenue and along the eastern property ...


Spiders You May Encounter While Social Distancing: A Field Guide To Oregon, Daniel K. Hufnagel 2021 Portland State University

Spiders You May Encounter While Social Distancing: A Field Guide To Oregon, Daniel K. Hufnagel

Anthós

This document is simply a short field guide on the many endearing spiders you have encountered or will potentially encounter while social distancing in Oregon. Included are journal entries for six different species of spider, with each log containing an illustration and a description of the physical appearance, behavior, and habitat of the arachnid listed. Also included is a basic diagram depicting the anatomy of the common spider.


Covid-19: A One Health Issue, Karen Gruszynski 2021 Lincoln Memorial University

Covid-19: A One Health Issue, Karen Gruszynski

Cumberland Mountain Naturalist

COVID-19 has very rapidly become part of modern societal lexicon as the disease highlights the importance understanding zoonotic diseases and the impact they can have on human life. With a 177million human cases and 3.82million deaths globally at the time of this publication, the "One Health" nature of the disease has had a lasting impact across the planet. As the disease spread rapidly, it highlighted the dissemination of information through social media and other sources. With this in mind, Dr. Gary Vroegindewey, Director for One Health at LMU-CVM, put forth the idea to have students collect and summarize information ...


Covid-19 & Blm: Racial Inequity In Healthcare, Laken Berndt 2021 Portland State University

Covid-19 & Blm: Racial Inequity In Healthcare, Laken Berndt

University Honors Theses

In this review of scholarship on healthcare inequality, as well as recent scholarship focused on COVID-19, we find there are clear racial disparities within healthcare, seen within previous trends, as well as the current pandemic. Minorities have historically been at greater risk during prior health crises, as well as being at risk for various underlying health conditions, and now, there are higher rates of infection and mortality amongst minority groups.

Socioeconomic factors play an incredibly important role in these disparities, and much of the current discourse does regard socioeconomic status as a primary factor in these trends. However, we find ...


Potential Therapeutic Effects Of Snake Venom Components On Pain Management In Rheumatoid Arthritis Patients, Maggie Metzger 2021 Portland State University

Potential Therapeutic Effects Of Snake Venom Components On Pain Management In Rheumatoid Arthritis Patients, Maggie Metzger

University Honors Theses

This paper reviews the existing literature on the uses of snake venom in the treatment of rheumatoid arthritis and pain management. Venom from the families Elapidae and Viperidae have been shown to have anti-inflammatory and analgesic effects. The analgesic findings of research on arthritis murine models are discussed, and the existing uses of snake venom in medicine to suggest the therapeutic potential of venom in the pain management of rheumatoid arthritis are taken into account. Snake venom has anti-inflammatory effects by reducing levels of pro-inflammatory cytokines and increasing levels of anti-inflammatory cytokines. Additionally, snake venom can reduce structural damage from ...


The Effect Of Diazepam On Early Neural Stem Cells Proliferative Activity And Hippocampal-Dependent Memory After Traumatic Brain Injury, Van Khanh Le Doan 2021 Portland State University

The Effect Of Diazepam On Early Neural Stem Cells Proliferative Activity And Hippocampal-Dependent Memory After Traumatic Brain Injury, Van Khanh Le Doan

University Honors Theses

Traumatic brain injury (TBI) induces an upregulation of neurogenesis in the brain specifically in the hippocampus, an area pertaining to learning and memory formation. Although this upregulated response is intuitively thought to be restorative, previous studies show that the nascent neurons generated after TBI exhibit abnormalities, such as aberrant morphologies and early migrations, which could suggest to be maladaptive. The GABA-A agonist diazepam has been shown to inhibit this upregulation in neurogenesis and normalizes dendrites after TBI. To determine whether this modulation of neurogenesis is ultimately beneficial or detrimental to cognitive recovery, diazepam was administered to C57BI/6J wild-type mice ...


Bryophyte Ecosystem Services: How Bryophytes Impact Ecosystem Processes And Their Use In Urban Systems, Keila Spangler 2021 Portland State University

Bryophyte Ecosystem Services: How Bryophytes Impact Ecosystem Processes And Their Use In Urban Systems, Keila Spangler

University Honors Theses

Bryophytes, which include mosses, liverworts, and hornworts, are non-vascular plants that provide crucial ecosystem services in natural and urban systems. In natural systems, these services include carbon, water, and nutrient cycling and maintenance of community level biodiversity. In urban systems, bryophytes can be used as green roof substrate, as bioindicators to monitor pollution and air quality, for horticulture uses, and in medicine. Although bryophytes possess some qualities, such as reproduction by spores, that may give them an advantage compared to vascular plants as the climate warms, their response to climate change remains understudied. This paper will review the literature on ...


Deacylated Trna Accumulation Is A Trigger For Bacterial Antibiotic Persistence Independent Of The Stringent Response, Whitney N. Wood, Kyle Mohler, Jesse Rinehart, Michael Ibba 2021 The Ohio State University

Deacylated Trna Accumulation Is A Trigger For Bacterial Antibiotic Persistence Independent Of The Stringent Response, Whitney N. Wood, Kyle Mohler, Jesse Rinehart, Michael Ibba

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Bacterial antibiotic persistence occurs when bacteria are treated with an antibiotic and the majority of the population rapidly dies off, but a small subpopulation enters into a dormant, persistent state and evades death. Diverse pathways leading to nucleoside triphosphate (NTP) depletion and restricted translation have been implicated in persistence, suggesting alternative redundant routes may exist to initiate persister formation. To investigate the molecular mechanism of one such pathway, functional variants of an essential component of translation (phenylalanyltRNA synthetase [PheRS]) were used to study the effects of quality control on antibiotic persistence. Upon amino acid limitation, elevated PheRS quality control led ...


A Qualitative Study On The Factors Affecting The Willingness Of 3rd Level Students To Register As Organ Donors In Ireland, Evelyn Hayes, Erika Horan, Cian Lally, Aisling Murphy 2021 Munster Technological University

A Qualitative Study On The Factors Affecting The Willingness Of 3rd Level Students To Register As Organ Donors In Ireland, Evelyn Hayes, Erika Horan, Cian Lally, Aisling Murphy

International Undergraduate Journal of Health Sciences

A wide range of factors contribute to an individual’s choice whether or not to register as an organ donor. The knowledge of the Irish population at large around the area of donation and transplantation is varied. A research survey was designed to be completed by third level students. The purpose of the research was to determine the most important factors that played a role in their decisions regarding opting-in to organ donation. A second aim of the survey was to determine the participants’ levels of knowledge and understanding on the ‘opt in’ donation system in place here in Ireland ...


Full Issue: The International Undergraduate Journal Of Health Sciences, Volume 1, Issue 1, June 2021, 2021 Munster Technological University

Full Issue: The International Undergraduate Journal Of Health Sciences, Volume 1, Issue 1, June 2021

International Undergraduate Journal of Health Sciences

The full June 2021 issue (Volume 1, Issue 1) of the International Undergraduate Journal of Health Sciences


Bio 013: Writing In The Sciences - Evolutionary Themes, Syllabus, Esther Muehlbauer 2021 CUNY Queens College

Bio 013: Writing In The Sciences - Evolutionary Themes, Syllabus, Esther Muehlbauer

Open Educational Resources

The Syllabus for Bio. 013, Writing in the Sciences - Evolutionary Themes, is a College Writing 2 course that develops student skill in science writing for different audiences: Scientists writing for themselves (the Field journal); Scientists writing for other scientists (the Review article); and Scientists writing for students/ society ( an Essay for a periodical that utilizes analogy/metaphor). To inform this writing, students read and discuss Darwin's original works and the writings of more contemporary evolutionary theorists, including E. Mayr and S.J. Gould. This course is appropriate for incoming students as well as more advanced biology students.


Editorial Board, 2021 Karbala International Journal of Modern Science

Editorial Board

Karbala International Journal of Modern Science

No abstract provided.


Food Caching Decisions In Canada Jays (Perisoreus Canadensis), Robert J. Martin 2021 The University of Western Ontario

Food Caching Decisions In Canada Jays (Perisoreus Canadensis), Robert J. Martin

Electronic Thesis and Dissertation Repository

Food scarce periods pose serious challenges for birds, particularly when those periods coincide with demanding life history stages such as overwintering. For resident birds in the Northern hemisphere, resource scarcity typically occurs simultaneously with winter conditions. In order to combat these compounded stressors, some species cache food to ensure a reliable supply of resources. Food caching is the storing of food items for subsequent retrieval and consumption after some delay. Canada Jays (Perisoreus canadensis) are year-round residents of the North American boreal forest and some high elevation areas in the United States, and cache food to combat resource scarcity. Additionally ...


Evaluating The Effects Of Physical Activity On The Cognitive Functions And Motor Skills Of The Special Needs Population And Testing A Different Teaching Style To Maximize The Efficiency Of Special Needs Programs, Oren Nedjar 2021 Nova Southeastern University

Evaluating The Effects Of Physical Activity On The Cognitive Functions And Motor Skills Of The Special Needs Population And Testing A Different Teaching Style To Maximize The Efficiency Of Special Needs Programs, Oren Nedjar

BIO4960: Practicum in Biology I

This study aimed to analyze the effects of physical activities on the motor and cognitive functions of participants with special needs and compare these results with a similar program but organized online because of the health precautions that have been applied due to the COVID-19 pandemic. An intervention consisting of sending an educational brochure aiming to increase high school volunteers' health literacy was then tested and results showed that it improved participants' health outcomes and also could increase the program's effectiveness in the long term.


Covid-19 Modeling With Caution In Relaxing Control Measures And Possibilities Of Several Peaks In Cameroon, S. Y. Tchoumi, Y. T. Kouakep, D. J. Fotsa Mbogne, J. C. Kamgang, V. C. Kamla, D. Bekolle 2021 The University of Ngaoundere

Covid-19 Modeling With Caution In Relaxing Control Measures And Possibilities Of Several Peaks In Cameroon, S. Y. Tchoumi, Y. T. Kouakep, D. J. Fotsa Mbogne, J. C. Kamgang, V. C. Kamla, D. Bekolle

Applications and Applied Mathematics: An International Journal (AAM)

We construct a new model for the comprehension of the Covid-19 dynamics in Cameroon. We present the basic reproduction number and perform some numerical analysis on the possible outcomes of the epidemic. The major results are the possibilities to have several peaks before the end of the first outbreak for an uniform strategy, and the danger to have a severe peak after the adoption of a careless strategy of barrier anti-Covid-19 measures that follow a good containment period.


Switching Effects Driven By Predation On Diffusive Predator Prey System, Anal Chatterjee, Samares Pal 2021 Barrackpore Rastraguru Surendranath College

Switching Effects Driven By Predation On Diffusive Predator Prey System, Anal Chatterjee, Samares Pal

Applications and Applied Mathematics: An International Journal (AAM)

No abstract provided.


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