Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2021

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 21811 - 21840 of 24293

Full-Text Articles in Entire DC Network

The Dark Side Of Social Media Engagement: An Analysis Of User-Generated Content In Online Wildlife Trade Communities, Kim Feddema, Paul Harrigan, Shasha Wang Jan 2021

The Dark Side Of Social Media Engagement: An Analysis Of User-Generated Content In Online Wildlife Trade Communities, Kim Feddema, Paul Harrigan, Shasha Wang

All Works

There is a growing academic interest on the dark side of engagement on social media and the role of user-generated content (UGC). The illicit trade of wildlife online is a major contributor to global species loss and, thus, strategies to reduce demand for wild species and consumer engagement in the market and are of paramount importance. We first conduct qualitative analyses on a large data set of UGC (n=14,729 words from 1060 comments from 12 Facebook groups) from a biodiversity hotspot, The Republic of Indonesia. We use automatic machine-learning lexical software to explore the discourse that occurs in comments of …

Go to article

An Efficient Scheme For Interference Mitigation In 6g-Iot Wireless Networks, Fahd N. Al-Wesabi, Imran Khan, Nadhem Nemri, Mohammed A. Al-Hagery, Huda G. Iskander, Quang Ngoc Nguyen, Babar Shah, Ki Il Kim Jan 2021

An Efficient Scheme For Interference Mitigation In 6g-Iot Wireless Networks, Fahd N. Al-Wesabi, Imran Khan, Nadhem Nemri, Mohammed A. Al-Hagery, Huda G. Iskander, Quang Ngoc Nguyen, Babar Shah, Ki Il Kim

All Works

The Internet of Things (IoT) is the fourth technological revolution in the global information industry after computers, the Internet, and mobile communication networks. It combines radio-frequency identification devices, infrared sensors, global positioning systems, and various other technologies. Information sensing equipment is connected via the Internet, thus forming a vast network. When these physical devices are connected to the Internet, the user terminal can be extended and expanded to exchange information, communicate with anything, and carry out identification, positioning, tracking, monitoring, and triggering of corresponding events on each device in the network. In real life, the IoT has a wide range …

Go to article

Facing Up To Climate Change: Community Composition Varies With Aspect And Surface Temperature In The Rocky Intertidal, A. Amstutz, L. B. Firth, J. I. Spicer, M. E. Hanley Jan 2021

Facing Up To Climate Change: Community Composition Varies With Aspect And Surface Temperature In The Rocky Intertidal, A. Amstutz, L. B. Firth, J. I. Spicer, M. E. Hanley

School of Biological and Marine Sciences

Marine rocky intertidal organisms are amongst those most affected by climate change with regional distributional changes observed for many species. Although often ascribed to increased sea surface temperatures, precise assessment of the local habitat conditions underpinning observed and predicted changes in community assembly is lacking. Here we examine how aspect (i.e. north-south orientation) affects intertidal community composition and how rock surface temperatures and stress responses of two dominant grazer species (Patella spp.) elucidate emergent differences. We quantified year-round temperature variation and surveyed intertidal community composition on paired natural rock gullies with Equator- (EF) and Pole-facing (PF) surfaces. We also investigated …

Go to article

Role Of Future Reef Growth On Morphological Response Of Coral Reef Islands To Sea‐Level Rise, G. Masselink, R. Mccall, E. Beetham, P. Kench, C. Storlazzi Jan 2021

Role Of Future Reef Growth On Morphological Response Of Coral Reef Islands To Sea‐Level Rise, G. Masselink, R. Mccall, E. Beetham, P. Kench, C. Storlazzi

School of Biological and Marine Sciences

No abstract provided.

Go to article

Something Happened In The Room: Conceptualizing Intersubjectivation, M Dunlop, Negro G Del, Munck K De, K Gale, Sm Mackay, M Price, A Sakellariadis, G Soler, J Speedy, Hove G Van Jan 2021

Something Happened In The Room: Conceptualizing Intersubjectivation, M Dunlop, Negro G Del, Munck K De, K Gale, Sm Mackay, M Price, A Sakellariadis, G Soler, J Speedy, Hove G Van

Plymouth Institute of Education

A panel convened around the idea of intersubjectivation, loosely conceived as a process of actively, consciously, and reciprocally adjusting the structures and power dynamics of our social relations, thereby mutually (and consensually) reconfiguring our subjectivities and, over time, our wider cultures. Through a series of explorations of how one may elicit, reach, or realize a shared sense of intersubjectivity, the panel reflected on and challenged conceptions of the human subject as unitary, discretely embodied, economically accountable, and objectively measurable by a proscribed set of validating criteria. Speakers invited, allowed, or insisted upon the (re)presentation of hidden, unrecognized, or misconstrued aspects …

Go to article

Explicit Tight Frames For Simulating A New System Of Fractional Nonlinear Partial Differential Equation Model Of Alzheimer Disease, Mutaz Mohammad, Alexander Trounev Jan 2021

Explicit Tight Frames For Simulating A New System Of Fractional Nonlinear Partial Differential Equation Model Of Alzheimer Disease, Mutaz Mohammad, Alexander Trounev

All Works

This paper is devoted to develop a new mathematical model for Alzheimer disease based on a system of fractional-order partial differential equations. The system of Alzheimer disease includes neurons, astrocytes, microglias and peripheral macrophages, as well as amyloid β aggregation and hyperphosphorylated tau proteins. We consider the Caputo fractional derivative definition to analyze the formulated system by simulating the effect of drugs that either failed or currently in clinical trials. To simulate the model, we use tight frame (framelet) systems generated using the unitaryand oblique extension principle. According to the simulation results, and based on using such new direction of …

Go to article

Comparative Biogeography And The Evolution Of Population Structure For Bottlenose And Common Dolphins In The Indian Ocean, Howard W.I. Gray, Ing Chen, André E. Moura, Ada Natoli, Shin Nishida, Shinsuke Tanabe, Gianna Minton, Louisa S. Ponnampalam, Muhammad S. Kiani, Ross Culloch, Mauvis Gore, Anna Särnblad, Omar Amir, Per Berggren, Tim Collins, Andrew J. Willson, Robert Baldwin, A. Rus Hoelzel Jan 2021

Comparative Biogeography And The Evolution Of Population Structure For Bottlenose And Common Dolphins In The Indian Ocean, Howard W.I. Gray, Ing Chen, André E. Moura, Ada Natoli, Shin Nishida, Shinsuke Tanabe, Gianna Minton, Louisa S. Ponnampalam, Muhammad S. Kiani, Ross Culloch, Mauvis Gore, Anna Särnblad, Omar Amir, Per Berggren, Tim Collins, Andrew J. Willson, Robert Baldwin, A. Rus Hoelzel

All Works

Aim: In the marine environment, where there are few physical boundaries to gene flow, there is often nevertheless intraspecific diversity with consequences for effective conservation and management. Here, we compare two closely related dolphin species with a shared distribution in the Indian Ocean (IO) to better understand the biogeographic drivers of their population structure. Location: Global oceans and seas with a focus on the Indian Ocean. Taxon: Tursiops sp. and Delphinus sp. Methods: Bayesian, ordination, assignment, statistical and phylogenetic analyses to assess phylogeography, connectivity and population structure using microsatellite and mitochondrial DNA genetic markers. Results: Both Tursiops sp. and Delphinus …

Go to article

A Meta-Analysis: Shape Of Age Effects And Second Language Grammar Acquisition, Muhammad Asif Qureshi Jan 2021

A Meta-Analysis: Shape Of Age Effects And Second Language Grammar Acquisition, Muhammad Asif Qureshi

All Works

This study reports findings of a meta-analysis on the effects of the age of first exposure, known as the age of onset (AO), on the acquisition of morphosyntax in a second language (L2). Several studies report restrictive effects of AO on L2 grammar acquisition (Abrahamsson, 2012; DeKeyser et al., 2010; Qureshi, 2016); however, there is a disagreement about the way sensitivity to second language acquisition declines (Birdsong, 2009; Long, 2013). Researchers disagree about the nature of the decline and argue whether the decrease that occurs in learners' ultimate proficiency in the second language is gradual and continuous or gradual but …

Go to article

Real-Time Privacy Preserving Framework For Covid-19 Contact Tracing, Akashdeep Bhardwaj, Ahmed A. Mohamed, Manoj Kumar, Mohammed Alshehri, Ahed Abugabah Jan 2021

Real-Time Privacy Preserving Framework For Covid-19 Contact Tracing, Akashdeep Bhardwaj, Ahmed A. Mohamed, Manoj Kumar, Mohammed Alshehri, Ahed Abugabah

All Works

The recent unprecedented threat from COVID-19 and past epidemics, such as SARS, AIDS, and Ebola, has affected millions of people in multiple countries. Countries have shut their borders, and their nationals have been advised to self-quarantine. The variety of responses to the pandemic has given rise to data privacy concerns. Infection prevention and control strategies as well as disease control measures, especially real-time contact tracing for COVID-19, require the identification of people exposed to COVID-19. Such tracing frameworks use mobile apps and geolocations to trace individuals. However, while the motive may be well intended, the limitations and security issues associated …

Go to article

Adversarial Reconstruction Loss For Domain Generalization, Bekkouch Imad Eddine Ibrahim, Dragos Constantin Nicolae, Adil Khan, S. M. Ahsan Kazmi, Asad Masood Khattak, Bulat Ibragimov Jan 2021

Adversarial Reconstruction Loss For Domain Generalization, Bekkouch Imad Eddine Ibrahim, Dragos Constantin Nicolae, Adil Khan, S. M. Ahsan Kazmi, Asad Masood Khattak, Bulat Ibragimov

All Works

The biggest fear when deploying machine learning models to the real world is their ability to handle the new data. This problem is significant especially in medicine, where models trained on rich high-quality data extracted from large hospitals do not scale to small regional hospitals. One of the clinical challenges addressed in this work is magnetic resonance image generalization for improved visualization and diagnosis of hip abnormalities such as femoroacetabular impingement and dysplasia. Domain Generalization (DG) is a field in machine learning that tries to solve the model’s dependency on the training data by leveraging many related but different data …

Go to article

Tropical Plant-Animal Interactions: Linking Defaunation With Seed Predation, And Resource-Dependent Co-Occurrence, Peter Jeffrey Williams Jan 2021

Tropical Plant-Animal Interactions: Linking Defaunation With Seed Predation, And Resource-Dependent Co-Occurrence, Peter Jeffrey Williams

Graduate Student Theses, Dissertations, & Professional Papers

Plant-consumer interactions can be critical for regulating populations of both plants and animals. In the tropics, many trees rely on animals to disperse their seeds, but many of these dispersers are disappearing, with potentially disastrous consequences for tropical tree species and global carbon storage. Defaunation—the loss of large animals due to factors such as overhunting—can also affect seed fates, either by increasing or decreasing seed predation. We know that defaunation alters these plant-animal interactions, but we still do not know how these changes at early life stages will ultimately affect tropical tree populations. Furthermore, we do not understand how defaunation …

Go to article

All In Due Time: Multi-Trait Assessment Of Elk Acclimation To Translocation, Ellen Marie Pero Jan 2021

All In Due Time: Multi-Trait Assessment Of Elk Acclimation To Translocation, Ellen Marie Pero

Graduate Student Theses, Dissertations, & Professional Papers

Wildlife translocation – the intentional movement of animals – is a crucial conservation tool for restoring species and halting global biodiversity decline. However, this practice is challenging for wildlife, and animals must adjust to their release landscapes for restoration to be successful. The period following release is a vulnerable time for translocated wildlife and determining when and how animals eventually acclimate following releases allows researchers to efficiently tailor post-release management to each species’ needs, thus maximizing the success of translocations while minimizing costs of an already expensive conservation practice. In this dissertation, I investigate changes in the physiological, behavioral, and …

Go to article

The Homology Of Sarcopterygian Gills, Kyle Orr Jan 2021

The Homology Of Sarcopterygian Gills, Kyle Orr

Cal Poly Humboldt theses and projects

Vertebrate gills may be either external (protruding from the body surface) or internal (enclosed in a chamber). Among living amphibians, external gills are found in salamander larvae and neotenes, early frog larvae, and caecilian embryos; internal gills are found only in later-stage frog larvae. Evidence for internal gills has also been found in stem tetrapods, and amphibian-like external gills have been found in some fossil temnospondyls and anthracosaurs. Gill homology among these groups and life stages has long been questioned. To address this, scanning electron microscopy, vascular casting, and paraffin sectioning were utilized to study the morphology of gills and …

Go to article

Alone On The Range? Rangeland Stakeholder Perceptions Of Public Lands, Community Change And Maintaining Rural Livelihoods, Hailee Rose Nolte Jan 2021

Alone On The Range? Rangeland Stakeholder Perceptions Of Public Lands, Community Change And Maintaining Rural Livelihoods, Hailee Rose Nolte

Cal Poly Humboldt theses and projects

Ranchers are a part of a rapidly changing rural western American landscape, and they play a special role in protecting and stewarding working landscapes. Rural communities in Eastern Oregon and Northeastern California have deeply rooted identities and economies connected to ranching and a high percentage of federal lands. The aim of this research is to: 1) document how ties to ranching are changing in communities undergoing social and economic change; 2) analyze the relationships and interactions between ranchers and federal management agency representatives; and 3) to identify how ranchers are maintaining their lifestyle under these circumstances. I interviewed representatives of …

Go to article

Bird Abundance And Diversity In Shade Coffee And Natural Forest Kenya, Frank J. Ong'ondo Jan 2021

Bird Abundance And Diversity In Shade Coffee And Natural Forest Kenya, Frank J. Ong'ondo

Cal Poly Humboldt theses and projects

Coffee, one of the major traded commodities in the world, has captured attention of both the international business class and conservation community due to its value as a beverage and for the habitat it can provide for wildlife. Previous work in Central Kenya has demonstrated that when cultivated with shade trees, coffee farms can host high levels of bird diversity. However, questions of how the bird community in shade coffee farms compares to those in natural forest remained unanswered. Using three visits to each of 160-point count locations in natural forest (80) and shade coffee sites (80) in Central Kenya, …

Go to article

The Lost Histories Of The Shetayet Of Sokar: Contextualizing The Osiris Shaft At Rosetau (Giza) In Archaeological History, Nicholas Edward Whiting Jan 2021

The Lost Histories Of The Shetayet Of Sokar: Contextualizing The Osiris Shaft At Rosetau (Giza) In Archaeological History, Nicholas Edward Whiting

Graduate Student Theses, Dissertations, & Professional Papers

The Osiris Shaft is one of many archaeological signatures associated with Egypt’s Giza Plateau, the most well-known of which are the Great Pyramids. However, the role(s) the Osiris Shaft feature played in the religious and daily practices of ancient Egyptians remain(s) unknown. This research seeks to contextualize the Osiris Shaft in Egyptian history to learn more about this feature’s story. In order to achieve this goal, this thesis examines funerary deities associated with Memphis theology and explores archaeological investigations related to the Osiris Shaft, including the work of Dr. Zahi Hawass and investigations by the Giza Mapping Project. Thanks to …

Go to article

Ecotoxicological And Physiological Effects Of Salinity On Amphibians, Brian James Tornabene Jan 2021

Ecotoxicological And Physiological Effects Of Salinity On Amphibians, Brian James Tornabene

Graduate Student Theses, Dissertations, & Professional Papers

Salinity is a persistent anthropogenic contaminant that negatively effects freshwater species, communities, and ecosystems. High-salinity wastewaters from energy extraction (wastewaters) and road salts are major contributors to increased salinity (NaCl; sodium chloride), but most studies focus on effects of NaCl roads salts. Amphibians are particularly vulnerable to contaminants such as increased salinity because of their porous skin, dependence on freshwater, and poor osmoregulatory capacity. We investigated the relative effects of wastewaters and NaCl on three species of larval amphibians with acute toxicity experiments (Chapter 1). Effects of wastewaters on larvae were predominantly due to high concentrations of NaCl and both …

Go to article

Uncovering Cooperation In Housepit 54, Bridge River, British Columbia, Canada, Megan Denis Jan 2021

Uncovering Cooperation In Housepit 54, Bridge River, British Columbia, Canada, Megan Denis

Graduate Student Theses, Dissertations, & Professional Papers

There is a significant amount of literature regarding the theory of cooperation, as well as ethnographies and data from modern populations that clearly show cooperation, yet it is difficult to tease that information out of the archaeological record. My thesis will focus on floors IIi to IIc of Bridge River’s Housepit 54 in British Columbia, Canada, which extends from the Bridge River 2 period to the Bridge River 3 period and includes two incidents of resource stress and one of resource plenty. These times of fluctuating resource availability should result in the population utilizing different approaches to social organization. By …

Go to article

Non-Indian Reservations, Joshua Matthew Rosenau Jan 2021

Non-Indian Reservations, Joshua Matthew Rosenau

Graduate Student Theses, Dissertations, & Professional Papers

This thesis is a skeptical treatment of the logical distinctions presumed to exist between “Indian” and “non-Indian” people. Despite representing 99 percent of the U.S. population, “non-Indians” represent a legal identity which has no explicit definition. The basis for the U.S. Supreme Court’s decisions regarding non-Indians and Indians rests not on any objective, empirical or logical criterion or proof, but rather on the “assumption of a ‘guardian-ward’ status. This thesis investigates this assumption, and recommends that we suspend judgment on whether the difference between “Indians” and “non-Indians” can be determined either by logical argument or by legal assumption.

Go to article

Straws, Seals, And Supermarkets: Topics In The Newspaper Coverage Of Marine Plastic Pollution, A Keller, Kayleigh J. Wyles Jan 2021

Straws, Seals, And Supermarkets: Topics In The Newspaper Coverage Of Marine Plastic Pollution, A Keller, Kayleigh J. Wyles

School of Psychology

No abstract provided.

Go to article

Founding Monsters, Maggie Colangelo, Bernard Means Jan 2021

Founding Monsters, Maggie Colangelo, Bernard Means

Founding Monsters

The Founding Monsters comic book was created as a science-friendly graphical storytelling framework that tells the story of the Founding Fathers and their obsession with prehistoric megafauna, especially mastodons and giant ground sloths. Founding Monsters combines sequential art (e.g. comic book style) with historical and scientific data. The first mastodon (Mammut americanum) fossils were found in New York in the early 18th century. Later in the 18th century, Thomas Jefferson was sent fossils from what is now West Virginia for what were eventually identified as bones from a giant ground sloth (Megalonyx jeffersoni). The founding fathers, …

Go to article

Founding Monsters Tales, Maggie Colangelo, Bernard Means Jan 2021

Founding Monsters Tales, Maggie Colangelo, Bernard Means

Founding Monsters

The creative team behind the Founding Monsters comic book—Maggie Colangelo and Dr. Bernard K. Means—bring you Founding Monsters Tales. Founding Monsters Tales features all-new art by Maggie and explores and expands on themes in Founding Monsters. Meet again Moses Williams, an enslaved servant of the Peale family who not only helped reconstruct the first mastodon skeleton, but was an unheralded artist in his own right. Find out whether mastodons were meat eaters, and how they differed from mammoths. Learn whether Thomas Jefferson was correct in his interpretation of what he called “the great claw.” Discover what Jefferson thought …

Go to article

Linking Habitat, Populations And Policy For Caribou In The Face Of Increasing Disturbance, Eric Charles Palm Jan 2021

Linking Habitat, Populations And Policy For Caribou In The Face Of Increasing Disturbance, Eric Charles Palm

Graduate Student Theses, Dissertations, & Professional Papers

In North America’s boreal forest, wildfire has long been the dominant form of natural disturbance. However, the human footprint in the region is steadily growing. Large-scale forest harvest and energy development have fragmented late-successional forests, leading to habitat loss for species such as caribou (Rangifer tarandus) that rely on these ecological communities. Caribou have experienced widespread population declines and local extirpation throughout the western boreal forest in recent decades. I first analyzed caribou resource selection responses to fires in >685 female caribou across 15 populations that span a wide gradient of fire frequency but are exposed to relatively little human …

Go to article

Mechanisms Of Engineered Nano-Material Induced Membrane Disruption And Lysosomal Membrane Permeability, Matthew Josiah Sydor Jan 2021

Mechanisms Of Engineered Nano-Material Induced Membrane Disruption And Lysosomal Membrane Permeability, Matthew Josiah Sydor

Graduate Student Theses, Dissertations, & Professional Papers

Engineered nano-materials (ENM), which have at least one dimension less than 100 nm are an emerging group of materials that are widely used in everyday products and workplaces. Because of the wide variety of ENM and their use in today’s society, there is a concern for the impacts of ENM on human health following exposure. While humans could be exposed to ENM through various routes, there is significant concern for inhalation of ENM due to their size and ease of aerosolization. Studies have reported that ENM can deposit into the lungs, particularly in the alveoli, where resident macrophages can encounter …

Go to article

A Fresh Start In Ambersnail (Gastropoda: Succineidae) Taxonomy: Finding A Foothold Using A Widespread Species Of Oxyloma, Kathryn E. Perez, Marco A. Martinez Cruz, Brent W. Steury, Gary M. Barker Jan 2021

A Fresh Start In Ambersnail (Gastropoda: Succineidae) Taxonomy: Finding A Foothold Using A Widespread Species Of Oxyloma, Kathryn E. Perez, Marco A. Martinez Cruz, Brent W. Steury, Gary M. Barker

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The ambersnails (Succineidae), found nearly worldwide, are considered a very challenging group to classify and identify with even genus-level identifications requiring dissection. In this study, we use mitochondrial and nuclear DNA markers, shell morphometrics, and anatomical dissection to examine fresh material collected from the type localities of two nominal species in Oxyloma (Neoxyloma). We conclude from these evidence that Oxyloma salleanum (L. Pfeiffer, 1850) and Oxyloma effusum (L. Pfeiffer, 1853) are conspecific, and accordingly reduce O. effusum to the status of junior synonymy. We present a redescription of O. salleanum.

Go to article

Assessment Of Awareness Level Of E-Learning Classroom Strategies Of University Lecturers: Implication For Evaluation Of Library And Information Science Resources, Bianca Uzoamaka Mbonu-Adigwe, Bukar Alhaji Umate, William Okoroaja Onu, Ifesinachi Jude Ezugwu, Cliff Ikenna Okebanama, Maureen Nkolika Okoye, Christian Sunday Ugwuanyi Phd, Chinedu I.O. Okeke Phd Jan 2021

Assessment Of Awareness Level Of E-Learning Classroom Strategies Of University Lecturers: Implication For Evaluation Of Library And Information Science Resources, Bianca Uzoamaka Mbonu-Adigwe, Bukar Alhaji Umate, William Okoroaja Onu, Ifesinachi Jude Ezugwu, Cliff Ikenna Okebanama, Maureen Nkolika Okoye, Christian Sunday Ugwuanyi Phd, Chinedu I.O. Okeke Phd

Library Philosophy and Practice (e-journal)

The emergence of information technology has brought a drastic change in the role of university libraries. University Libraries play key role in supporting e-learning implying that Library and information science personnel can significantly assist in the integration of information resources in the process of electronic learning. Thus, this study investigated lecturers’ level of awareness of e-learning classroom strategies. Descriptive survey design was adopted for the study. The sample comprised 149 lecturers teaching integrated science courses. Instrument used for data collection was a questionnaire titled Lecturers’ Awareness Level of E-learning Strategies (LALES). LALES was validated and the reliability index of the …

Go to article

Preserving The Knowledge Of Indigenous Primary Health Care Practitioners: A Case Study Of Practitioners And Librarians In The Mishing Community In Dhakuakhana (Assam), Anjuma Saikia As, Ranjeet Kumar Choudhary Rks Jan 2021

Preserving The Knowledge Of Indigenous Primary Health Care Practitioners: A Case Study Of Practitioners And Librarians In The Mishing Community In Dhakuakhana (Assam), Anjuma Saikia As, Ranjeet Kumar Choudhary Rks

Library Philosophy and Practice (e-journal)

The preservation of Indigenous knowledge of indigenous health practitioners is incredibly significant for society. The Indigenous health practitioners play a vital role in disseminating their service to the society. There are numerous studies have been conducted on the use of indigenous knowledge for various purposes, but this study is conducted to know the different preservation methods to preserve indigenous health care knowledge. In India Traditional Knowledge Digital Libraries take initiatives to preserve indigenous knowledge for future use. This study was conducted among 100 indigenous health practitioners and 70 rural librarians to know for what type of disease indigenous knowledge can …

Go to article

Effect Of Cbd On D2 Dopamine Receptor And Cb1 Cannabinoid Receptor Function And Localization, Elizabeth Dull Jan 2021

Effect Of Cbd On D2 Dopamine Receptor And Cb1 Cannabinoid Receptor Function And Localization, Elizabeth Dull

Online Theses and Dissertations

Cannabidiol (CBD) is the second most abundant cannabinoid found in Cannabis sativa and its array of therapeutic effects make it a popular target of pharmacological research. Though its properties are psychoactive in nature, abuse and dependence of CBD has never been reported. Its beneficial side effects are mediated through the endocannabinoid system (ECS), as it functions as an antagonist at cannabinoid receptor 1 (CB1). However, recent evidence suggests that CBD may also be a CB1 negative allosteric modulator of (−)-trans-Δ9-tetrahydrocannabinol (Δ9-THC). Interestingly, the ECS is linked to the main circuit thought to modulate reward signaling when taking substances of abuse, …

Go to article

Evidence Of Non-Strike Induced Chemosensory Searching By Eastern Copperheads (Agkistrodon Contortrix) During Cicada Predation, Henderson Cyrenius Gull Jan 2021

Evidence Of Non-Strike Induced Chemosensory Searching By Eastern Copperheads (Agkistrodon Contortrix) During Cicada Predation, Henderson Cyrenius Gull

Online Theses and Dissertations

New evidence of active foraging by eastern copperheads, Agkistrodon contortrix, contradicts its description as an envenomation-reliant ambush predator. Evidence of active foraging through non-strike induced chemosensory searching (NSICS) was previously found in cottonmouths (A. piscivorus) but could not be replicated with A. contortrix in later experiments. I observed foraging methods similar to non-strike induced chemoreception when specifically predating upon cicada nymphs during seasonal emergences. I hypothesized that A. contortrix actively forage using chemoreception without envenomation, and that tongue flick rates would be higher during foraging behaviors than during non-predatory or resting behaviors. Behavior of twelve A. contortrix were filmed at …

Go to article

Forgotten In Local Jails: A Carceral System Created To Fail Women., Hayley Jackey Jan 2021

Forgotten In Local Jails: A Carceral System Created To Fail Women., Hayley Jackey

Online Theses and Dissertations

The United States has seen an influx of incarcerated women since the 1980s with a 750% increase between 1980 and 2017. There is a substantial amount of literature about how women experience prison and the unique challenges they face as they reenter society such as motherhood, previous abuse, mental health, and housing. Conclusions drawn suggest that the current structure fails to prepare women for a society that denounces women who have been incarcerated. What is less known is how this research translates to the jail environment. For reasons to be discussed, it is likely that local jails are even less …

Go to article

First Prev Next Last