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2021

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Role Of Training Mode On Individual And Group Responses To Sprint Interval Training, Lauren T. Digby, Seth F. Mccarthy, Claudia Jarosz, Derek P.D. Bornath, Jessica A.L. Tucker, Tom J. Hazell Jan 2021

Role Of Training Mode On Individual And Group Responses To Sprint Interval Training, Lauren T. Digby, Seth F. Mccarthy, Claudia Jarosz, Derek P.D. Bornath, Jessica A.L. Tucker, Tom J. Hazell

Theses and Dissertations (Comprehensive)

Improvements in V̇O2peak decrease the risk of heart disease and all-cause mortality, and is predictive of overall health. This study compared the group and individual responses of V̇O2peak, as well as group responses of aerobic performance and anaerobic capacity following running and cycling sprint interval training (SIT) to determine the optimal modality. Twenty-three recreationally active young adults (males: n = 16, BMI = 27.5±4.9; females: n = 7, BMI = 23.6±3.0) completed 3 training sessions/week for 3 weeks (9 sessions). Pre- and post-testing measures included: aerobic capacity (V̇O2peak), aerobic performance (time trial), and anaerobic capacity …


The Lived Experiences Of Developmental Disability Caregivers And Service Providers In Ontario, Tetyana Ali Jan 2021

The Lived Experiences Of Developmental Disability Caregivers And Service Providers In Ontario, Tetyana Ali

Theses and Dissertations (Comprehensive)

Providing care for children with developmental disabilities (CwDD) is complex and is a life-long journey. Caregivers (CGs) of CwDD experience higher levels of stress, declining mental and physical health, feelings of isolation, diminished financial outcomes, and an overall lower quality of life. Additionally, they often face marginalization and numerous barriers when trying to access funding and supports. This study explored the experiences of CGs of CwDD in the context of Ontario and included the perspectives of CGs and service providers (SPs) to investigate the role the government played in CGs ability to provide adequate care.

Twenty participants were recruited through …


Microaggressions And Microaffirmations Experienced By Lgbtq2s+ People With Disabilities, Kathleen Mckee Jan 2021

Microaggressions And Microaffirmations Experienced By Lgbtq2s+ People With Disabilities, Kathleen Mckee

Theses and Dissertations (Comprehensive)

This study explored the indirect, subtle, or unintentional discrimination (i.e., microaggressions) and positive identity-affirming actions (i.e., microaffirmations) that gender and sexually diverse (LGBTQ2S+) people with disabilities (PWD) experience in multiple life contexts. Previous literature has tended to focus solely on negative experiences, and little research has been conducted to understand their possible experiences of microaffirmations and how they may promote resilience and well-being. Intersectionality theory, minority stress theory, and Crip theory guided the study. The objectives were to explore microaggressions and microaffirmations experienced by LGBTQ2S+ PWD, as well as these individuals’ responses to microaggressions and microaffirmations. Semi structured qualitative interviews …


Hexagon Tilings Of The Plane That Are Not Edge-To-Edge, D. Frettlöh, Alexey Glazyrin, Z. Lángi Jan 2021

Hexagon Tilings Of The Plane That Are Not Edge-To-Edge, D. Frettlöh, Alexey Glazyrin, Z. Lángi

School of Mathematical & Statistical Sciences Faculty Publications

An irregular vertex in a tiling by polygons is a vertex of one tile and belongs to the interior of an edge of another tile. In this paper we show that for any integer k≥3, there exists a normal tiling of the Euclidean plane by convex hexagons of unit area with exactly k irregular vertices. Using the same approach we show that there are normal edge-to-edge tilings of the plane by hexagons of unit area and exactly k many n-gons (n>6) of unit area. A result of Akopyan yields an upper bound for k depending on the maximal diameter …


Combining Assumptions And Graphical Network Into Gene Expression Data Analysis, Demba Fofana, E. O. George, Dale Brown Jan 2021

Combining Assumptions And Graphical Network Into Gene Expression Data Analysis, Demba Fofana, E. O. George, Dale Brown

School of Mathematical & Statistical Sciences Faculty Publications

Background

Analyzing gene expression data rigorously requires taking assumptions into consideration but also relies on using information about network relations that exist among genes. Combining these different elements cannot only improve statistical power, but also provide a better framework through which gene expression can be properly analyzed.

Material and methods

We propose a novel statistical model that combines assumptions and gene network information into the analysis. Assumptions are important since every test statistic is valid only when required assumptions hold. So, we propose hybrid p-values and show that, under the null hypothesis of primary interest, these p-values are …


Estimation Of The Healthcare Waste Generation During Covid-19 Pandemic In Bangladesh, Tamal Chowdhury, Hemal Chowdhury, Md Salman Rahman, Nazia Hossain, Ashfaq Ahmed, Sadiq M. Sait Jan 2021

Estimation Of The Healthcare Waste Generation During Covid-19 Pandemic In Bangladesh, Tamal Chowdhury, Hemal Chowdhury, Md Salman Rahman, Nazia Hossain, Ashfaq Ahmed, Sadiq M. Sait

School of Mathematical & Statistical Sciences Faculty Publications

COVID-19 pandemic-borne wastes imposed a severe threat to human lives as well as the total environment. Improper handling of these wastes increases the possibility of future transmission. Therefore, immediate actions are required from both local and international authorities to mitigate the amount of waste generation and ensure proper disposal of these wastes, especially for low-income and developing countries where solid waste management is challenging. In this study, an attempt is made to estimate healthcare waste generated during the COVID-19 pandemic in Bangladesh. This study includes infected, ICU, deceased, isolated and quarantined patients as the primary sources of medical waste. Results …


Characterizations Of Student, Instructor, And Textbook Discourse Related To Basis And Change Of Basis In Quantum Mechanics, Kaitlyn Stephens Serbin, Megan Wawro, Rebecah Storms Jan 2021

Characterizations Of Student, Instructor, And Textbook Discourse Related To Basis And Change Of Basis In Quantum Mechanics, Kaitlyn Stephens Serbin, Megan Wawro, Rebecah Storms

School of Mathematical & Statistical Sciences Faculty Publications

Communities develop social languages in which utterances take on culturally specific situated meanings. As physics students interact in their classroom, they can learn the broader physics community’s social language by co-constructing meanings with their instructors. We provide an exposition of a systematic and productive use of idiosyncratic, socially acquired language in two classroom communities that we consider to be subcultures of the broader community of physicists. We perform a discourse analysis on twelve quantum mechanics students, two instructors, and the course text related to statements about basis and change of basis within a spin-½ probability problem. We classify the utterances’ …


Galaxy And Mass Assembly (Gama): The Interplay Between Galaxy Mass, Sfr, And Heavy Element Abundance In Paired Galaxy Sets, L. E. Garduno, M. A. Lara-Lopez, O. Lopez-Cruz, A. M. Hopkins, M. S. Owers, K. A. Pimbblet, Benne Holwerda Jan 2021

Galaxy And Mass Assembly (Gama): The Interplay Between Galaxy Mass, Sfr, And Heavy Element Abundance In Paired Galaxy Sets, L. E. Garduno, M. A. Lara-Lopez, O. Lopez-Cruz, A. M. Hopkins, M. S. Owers, K. A. Pimbblet, Benne Holwerda

Faculty and Staff Scholarship

We study the star formation rate (SFR), stellar mass (M), and the gas metallicity (Z) for 4636 galaxy pairs using the Galaxy And Mass Assembly (GAMA) survey. Our galaxy pairs lie in a redshift range of 0


Online Learning Librarianship In A Fully Online World: Findings (And Advice) From A National Study During The Covid-19 Pandemic, Amber Willenborg, Tessa Withorn Jan 2021

Online Learning Librarianship In A Fully Online World: Findings (And Advice) From A National Study During The Covid-19 Pandemic, Amber Willenborg, Tessa Withorn

Faculty and Staff Scholarship

No abstract provided.


A Novel Technique To Improve Capture Success Of Common Ravens, Lindsey R. Perry, Terrah M. Owens, Zachary T. Slick, Jimmy Taylor, Jonathan B. Dinkins Jan 2021

A Novel Technique To Improve Capture Success Of Common Ravens, Lindsey R. Perry, Terrah M. Owens, Zachary T. Slick, Jimmy Taylor, Jonathan B. Dinkins

United States Department of Agriculture Wildlife Services: Staff Publications

Traditional trapping techniques for common ravens (Corvus corax; raven) require significant effort, often produce low capture rates, and cannot be used in some situations. We designed a 3-m noose pole to secure ravens from nocturnal roost locations while using a strobe spotlight to temporarily disorient them. We collected measures of trapping efficiency and contrasted them with padded leghold traps also used in the study. We effectively implemented our noose pole method in July and August of 2018, 2019, and 2020 in the Baker and Cow Lakes sage-grouse (Centrocercus urophasianus) Priority Areas of Conservation in eastern Oregon, USA, which yielded trapping …


Assessing The Psychometric Proprieties Of The Attitudes Toward Seeking Professional Psychological Help Scale–Short Form (Atspph-Sf) Among Latino Adults, Lucas Torres, Brooke E. Magnus, Natasha Suhail Najar Jan 2021

Assessing The Psychometric Proprieties Of The Attitudes Toward Seeking Professional Psychological Help Scale–Short Form (Atspph-Sf) Among Latino Adults, Lucas Torres, Brooke E. Magnus, Natasha Suhail Najar

Psychology Faculty Research and Publications

The Latino population continues to underutilize mental health services at an alarming rate. The Attitudes Toward Seeking Professional Psychological Help Scale–Short Form (ATSPPH-SF) is one of the most commonly used instruments to assess help-seeking attitudes. The current study sought to evaluate the factor structure and test for the presence of differential item functioning on the ATSPPH-SF with a sample of Latino adult individuals across nativity status (U.S.- vs. foreign-born), language format (English vs. Spanish), and gender. The analyses revealed two relatively independent factors named Openness to Seeking Treatment and Value and Need in Seeking Treatment. Measurement equivalence and practical implications …


“Accept The Idea That Neurodiverse Kids Exist”: Dyslexic Narratives And Neurodiversity Paradigm Visions, Monica Van Schaik Jan 2021

“Accept The Idea That Neurodiverse Kids Exist”: Dyslexic Narratives And Neurodiversity Paradigm Visions, Monica Van Schaik

Theses and Dissertations (Comprehensive)

The neurodiversity paradigm has received support from many autistic self-advocates and scholars. Although definitions of neurodiversity are always framed to include dyslexia, research into the neurodiversity paradigm that seeks the perspectives of dyslexic people is limited. This qualitative study sought to fill this gap by asking 12 self-identified dyslexic adults how they imagined their life stories would change within a neurodiversity paradigm. A narrative inquiry methodology was combined with the guiding principles of participatory action research and dyslexic methodology. Dyslexic ways of knowing were engaged and illuminated in the research design, writing process and findings. Emergent themes revealed participants’ lived …


Evaluating Employees’ Experiences In Implementing Covid-19 Safety Protocols In Ontario Parks, Jessica Kaatz Jan 2021

Evaluating Employees’ Experiences In Implementing Covid-19 Safety Protocols In Ontario Parks, Jessica Kaatz

Theses and Dissertations (Comprehensive)

The COVID-19 pandemic has created a wide range of public health challenges for park management and staff in Ontario. Green spaces have become a source of resilience during the spread of the virus, partly due to their proven positive impacts on social, mental and physical well-being. With the introduction of social distancing protocols, utilization of Personal Protective Equipment (PPE), and standardizing constant sanitation efforts, park employees are more responsible than ever for the daily implementation of rules governing park safety and security. At the same time, increased visitor numbers and continually changing government protocols that varied between regional jurisdictions have …


Drivers And Consequences Of Alnus Alnobetula (Green Alder) Distribution At The Taiga-Tundra Ecotone Of The Northwest Territories, Cory Wallace Jan 2021

Drivers And Consequences Of Alnus Alnobetula (Green Alder) Distribution At The Taiga-Tundra Ecotone Of The Northwest Territories, Cory Wallace

Theses and Dissertations (Comprehensive)

Climate warming in the Arctic is occurring considerably faster than the global average. One of the most widespread biological responses to this warming in terrestrial systems has been a marked increase in the productivity of shrubby vegetation. Increased shrub growth and reproduction has the potential to alter both local and global aspects of ecosystem function, making understanding its drivers and environmental impact an important research priority. In this context, considerable research has focused on characterizing relationships between shrub cover, abiotic conditions, and understory communities. However, fewer studies have co-located measurements of these components simultaneously in undisturbed tundra shrub patches to …


Psychological Responses To Different Exercise Intensities In Middle-Aged Adults, Claudia Jarosz Jan 2021

Psychological Responses To Different Exercise Intensities In Middle-Aged Adults, Claudia Jarosz

Theses and Dissertations (Comprehensive)

PURPOSE: The current study aimed to compare psychological responses to, preference for, and adherence to moderate-intensity continuous training (MICT), high-intensity interval training (HIIT), and modified sprint-interval training (SIT) among adults aged 30-50 years. METHODS: Ten participants (46 ± 10 y; maximal oxygen uptake (V̇O2max) 34.70±10.34 mL·kg-1·min-1), participated in 3 experimental sessions: MICT (30 min at 65% V̇O2max); HIIT (10 x 1 min bouts at 90% maximal heart rate separated by 1 min of recovery); and modified SIT (8x15 s “all-out” sprints interspersed with 2 min of recovery). Affect, enjoyment, self-efficacy, and intentions …


The Perceived Deservingness Of Narcissistic Individuals, Danielle Lynch Jan 2021

The Perceived Deservingness Of Narcissistic Individuals, Danielle Lynch

Theses and Dissertations (Comprehensive)

Previous research has explored how narcissism relates to empathy and deservingness. It has been suggested that not only do narcissistic individuals lack empathy for others, but also that others lack empathy for narcissists when they experience misfortunes. It is not clear if this is because the narcissists’ own behaviour is believed to have contributed to the misfortune or because of their over-arching personality. The present research aimed to explore how narcissism affects empathy and perceptions of deservingness. Study 1 (N=962) investigated whether the target person’s amount of control over the negative outcome influenced how deserving they were perceived …


The Combined Transitions Of Great Power Politics And The Global Energy System A Comparative Analysis Of China, The United States And Russia, Roger Boyd Jan 2021

The Combined Transitions Of Great Power Politics And The Global Energy System A Comparative Analysis Of China, The United States And Russia, Roger Boyd

Theses and Dissertations (Comprehensive)

The objective of this study is to provide a framework that allows for a holistic and integrated analysis of what will become, if they are not already, the two most significant determinants of foreign policy – the need for a fundamental change in the global energy system and the nature of major power competition within the international system. It specifically rejects the eco-modernist framing of the required energy transition as simply a technocratic challenge, and instead accepts the large-scale nature of the social, political and economic changes and disruptions that will be required. By framing these changes within the dynamic …


Information Age Technology, Industrial Age Laws, Elizabeth I. Winston Jan 2021

Information Age Technology, Industrial Age Laws, Elizabeth I. Winston

Scholarly Articles

The United States patent system was born during the Industrial Age — at a time where the focus was on promoting innovation in machines, and tangible means of changing the world. With the dawn of the Information Age, innovation is increasingly intangible. The industrial age laws, as currently interpreted, are not well-suited for the changing and evolving technological world. Information age innovators face challenges at the United States Patent and Trademark Office, through the judicial system and at the United States International Trade Commission. It is time for a change in the system to reflect the realities of modern technology. …


Bargaining For Innovation, Elizabeth I. Winston Jan 2021

Bargaining For Innovation, Elizabeth I. Winston

Scholarly Articles

Reward drives innovation. For this reason, Congress has enacted a system of patents, trademarks, and copyrights to incentivize innovation. Such publicly ordered intellectual property regulation supports public and private interests—mandating disclosure of the innovation while legislating protection of that disclosure. Increasingly, though, the legislated incentives are proving insufficient for innovation, and innovators are relying on private incentives, undermining the fundamental balance of our legal framework and maximizing the reward to innovators at the cost of the public’s interest. Enforcement of contracts that supplant legislation rather than supplement it contravenes public policy and vitiates the public’s interest. It is time to …


Fintech: New Battle Lines In The Patent Wars?, Megan M. La Belle, Heidi Mandanis Schooner Jan 2021

Fintech: New Battle Lines In The Patent Wars?, Megan M. La Belle, Heidi Mandanis Schooner

Scholarly Articles

Historically, financial institutions have relied on trade secrets and first-mover advantages, rather than patents, to protect their inventions. For the few financial patents that were issued, conventional wisdom was that they weren’t terribly interesting or important. In our 2014 study on financial patents, we showed that banks were breaking from past patterns and increasingly seeking patent protection. We explained that financial institutions were primarily building their patent portfolios as a defensive measure—i.e., to protect themselves from infringement suits. Indeed, the finance industry successfully lobbied Congress to include provisions in the America Invents Act of 2011 that made it easier to …


Looking Beyond The Profit And Into The Light: Consumer Financial Protection And The Common Good, Veryl Victoria Miles Jan 2021

Looking Beyond The Profit And Into The Light: Consumer Financial Protection And The Common Good, Veryl Victoria Miles

Scholarly Articles

The intention of this Article is to review the various statements of Catholic Social Teaching that are fundamental in describing economic justice and that are most pertinent to any consideration of consumer financial protection as essential to the common good. This review will begin with Pope Leo XIII's 1891 encyclical Rerum Novarum and other encyclicals that followed Rerum Novarum as a continuum of Church teaching regarding social and economic justice; the pastoral letter from the United States Conference of Catholic Bishops entitled Economic Justice for All (1986); and the Pontifical Council of Justice and Peace's handbook on the Vocation of …


Transaction Cost Economics, Labor Law, And The Gig Economy, Seth C. Oranburg, Liya Palagashvili Jan 2021

Transaction Cost Economics, Labor Law, And The Gig Economy, Seth C. Oranburg, Liya Palagashvili

Scholarly Articles

The rapid growth of technology not only is creating innovative goods and services, but it is also altering the workplace and the traditional understanding of relationships between employee and employer. This can be seen today with the rise of the gig economy and alternative work arrangements. Our paper seeks to explain how technology has reduced the transaction costs of contracting in the market. In particular, we identify the innovations that have led to reductions in triangulation, transfer, trust, and measurement costs. These costs are relevant for creating greater exchanges between consumers and labor suppliers and, hence, more work for contractors …


How Effective Is The Filtration Of ‘Kn95’ Filtering Facepiece Respirators During The Covid-19 Pandemic?, Clothilde Brochot, Mohamed Nejib Saidi, Ali Bahloul Jan 2021

How Effective Is The Filtration Of ‘Kn95’ Filtering Facepiece Respirators During The Covid-19 Pandemic?, Clothilde Brochot, Mohamed Nejib Saidi, Ali Bahloul

Études primaires

Objectives

The high demand of filtering facepiece respirators (FFRs) worldwide during the period of the COVID-19 pandemic has led to a critical situation for decision-makers regarding their supply. After authorizing the use of FFRs certified by other regions of the world, decision-makers in many countries have published alerts, particularly concerning the ‘KN95’ type.

Methods

This paper investigated the filtration performance of different FFRs using an experimental setup already employed during several studies on FFRs filtration performance. Its high-resolution measuring devices permit to determine filtration performance according to the normative criteria: the pressure drop and the filtration efficiency. Eight different FFRs …


Simulation Of The Objective Occlusion Effect Induced By Bone-Conducted Stimulation Using A Three-Dimensional Finite-Element Model Of A Human Head, Huiyang Xu, Franck Sgard, Kévin Carillo, Éric Wagnac, Jacques De Guise Jan 2021

Simulation Of The Objective Occlusion Effect Induced By Bone-Conducted Stimulation Using A Three-Dimensional Finite-Element Model Of A Human Head, Huiyang Xu, Franck Sgard, Kévin Carillo, Éric Wagnac, Jacques De Guise

Études primaires

The occlusion effect (OE) refers to the phenomenon that more bone-conducted physiological sounds are transmitted into the earcanal when it is blocked and may cause discomfort on users of hearing protection devices. Models have been proposed to study the OE as they can help understand the physical mechanisms and can be used to evaluate the individual contribution on the OE of the factors that may affect it (i.e., occlusion device, ear anatomy, and stimulation). The existing finite element models developed to study the OE are limited by their truncated ear geometries. In order to progress in the understanding of the …


Assessing The Comfort Of Earplugs: Development And Validation Of The French Version Of The Coprod Questionnaire, Jonathan Terroir, Nellie Perrin, Pascal Wild, Olivier Doutres, Franck Sgard, Chantal Gauvin, Alessia Negrini Jan 2021

Assessing The Comfort Of Earplugs: Development And Validation Of The French Version Of The Coprod Questionnaire, Jonathan Terroir, Nellie Perrin, Pascal Wild, Olivier Doutres, Franck Sgard, Chantal Gauvin, Alessia Negrini

Études primaires

Earplugs are a common form of protection for workers exposed to hazardous noise levels. Their comfort directly impacts the effective protection by influencing their consistent and correct use. Nevertheless, comfort definition may vary according to the studies. Thus, a previous review of the literature has shown that to improve our understanding of perceived comfort and to reduce measurement variability, it is advisable to consider comfort through a multidimensional construct (physical, acoustical, functional and psychological). On this basis, the COPROD (COnfort des PROtections auDitives/COmfort of hearing PROtection Devices) questionnaire was developed. It is intended for people working in noisy environments. Nine …


Forgotten Heroes Of World War I: Pfc. Preston W. Rushing And The 105th Field Signal Battalion Jan 2021

Forgotten Heroes Of World War I: Pfc. Preston W. Rushing And The 105th Field Signal Battalion

Jackson Purchase Historical Society Journal Archive

Forgotten Heroes of World War I: Pfc. Preston W. Rushing and the 105th Field Signal Battalion

Alice-Catherine Carls


Escape To Freedom: The Role Of The Steamboat In The Underground Railroad Jan 2021

Escape To Freedom: The Role Of The Steamboat In The Underground Railroad

Jackson Purchase Historical Society Journal Archive

Escape to Freedom: The Role of the Steamboat in the Underground Railroad

Richard D. Parker


Treatment Of Cutting Oil Via Fe0/Air And Al0/Air Using Waste From Auto Parts Manufacturing, Warangkana Srimoke Jan 2021

Treatment Of Cutting Oil Via Fe0/Air And Al0/Air Using Waste From Auto Parts Manufacturing, Warangkana Srimoke

Chulalongkorn University Theses and Dissertations (Chula ETD)

Used shot blast and aluminium dross wastes generated from auto part manufacturing were applied as catalysts under the modified-air Fenton (MAF) system to treat synthetic cutting oil wastewater. Experimental designs were applied to find optimum conditions in terms of size and amount of catalyst, initial pH, initial cutting oil concentration, air flow rate, and mixing speed. Fe0 and Al0 forms were found in used shot blast and aluminum dross, respectively, according to XRD and XRF results, and the element contents of Fe and Al were found to be 96.37 % and 37.13 %, respectively. For used shot blast under the …


การพัฒนาวัสดุไตรแคลเซียมซิลิเกตที่ผลิตในประเทศไทยสำหรับใช้ในงานไวทัลพัลพ์เทอราพี, สลิลลา ลิขิตปรีดา Jan 2021

การพัฒนาวัสดุไตรแคลเซียมซิลิเกตที่ผลิตในประเทศไทยสำหรับใช้ในงานไวทัลพัลพ์เทอราพี, สลิลลา ลิขิตปรีดา

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้มีวัตถุประสงค์เพื่อศึกษาคุณสมบัติทางกายภาพและทางเคมีของวัสดุปิดทับเนื้อเยื่อในไตรแคลเซียมซิลิเกตที่ผลิตจากเปลือกหอยแครง และเถ้าแกลบ (C-Cap) C-Cap ผลิตมาจากเปลือกหอยแครงและเถ้าแกลบ ร่วมกับมีการเติมสารเติมแต่งอื่นๆ C-Cap ประกอบด้วย 2 ส่วน ได้แก่ ส่วนผงและส่วนเหลว ส่วนผงประกอบด้วยผงไตรแคลเซียมซิลิเกตจากเปลือกหอยแครง เซอร์โคเนียมซิลิเกต และซิลิกอนไดออกไซด์ ส่วนเหลวประกอบด้วย เมทิลซาลิไซเลต และเอ็น-บิวทิล เบนซีน ซัลโฟนาไมด์ ในการศึกษานี้เลือกใช้วัสดุปิดทับเนื้อเยื่อในแคลเซียมไฮดรอกไซด์ที่มีจำหน่ายในปัจจุบัน ได้แก่ ยี่ห้อ Life และ Dycal® เพื่อนำมาศึกษาเปรียบเทียบคุณสมบัติทางกายภาพและทางเคมีกับ C-Cap การศึกษาคุณสมบัติทางกายภาพ ได้แก่ ระยะเวลาการแข็งตัว การไหลแผ่ การละลายตัว ความทึบรังสี อ้างอิงวิธีการและดัดแปลงมาจาก ไอเอสโอ 6876:2012 ศึกษาการปลดปล่อยแคลเซียมอิออนและความเป็นกรดด่างที่ระยะเวลาต่าง ๆ ภายหลังจาก C-Cap แข็งตัว ทำการตรวจคุณลักษณะเฉพาะของ C-Cap เมื่อสัมผัสกับน้ำ ด้วยเทคนิคการเลี้ยวเบนของรังสีเอ็กซ์และเทคนิคฟูเรียร์ทรานสฟอร์มอินฟราเรดสเปกโทรสโกปี ผลการศึกษาพบว่า C-Cap Dycal® และ Life มีระยะเวลาการแข็งตัวของวัสดุอยู่ในช่วง 1-2 นาที C-Cap มีการไหลแผ่สูงที่สุด การละลายตัวของวัสดุทั้ง 3 ชนิดไม่แตกต่างกันอย่างมีนัยสำคัญ ความทึบรังสีของ Dycal® Life และ C-Cap มีค่าเทียบเท่ากับ 2.87, 2.60, 2.43 มิลลิเมตรของอะลูมินัมตามลำดับ วัสดุทุกชนิดมีคุณสมบัติเป็นด่าง โดยพบว่า C-Cap มีความเป็นกรดด่างสูงที่สุดอยู่ในช่วง 9.9-10.5 และสามารถปลดปล่อยแคลเซียมอิออนสูงสุดเมื่อเปรียบเทียบกับวัสดุประเภทแคลเซียมไฮดรอกไซด์ ผลการวิเคราะห์ด้วยเทคนิคการเลี้ยวเบนของรังสีเอ็กซ์และเทคนิคฟูเรียร์ทรานสฟอร์มอินฟราเรดสเปกโทรสโกปี พบว่า C-Cap ที่สัมผัสกับน้ำจะพบแคลเซียมไฮดรอกไซด์ ซึ่งเป็นผลิตภัณฑ์ของไตรแคลเซียมซิลิเกตที่เกิดปฏิกริยาไฮเดรชัน


Utilization Of Cardiac Time Intervals By A Customized Electrocardiography And Phonocardiography Device To Evaluate Cardiac Function In Healthy And Degenerative Mitral Valve Disease (Dmvd) Dogs, Karlo Romano Gicana Jan 2021

Utilization Of Cardiac Time Intervals By A Customized Electrocardiography And Phonocardiography Device To Evaluate Cardiac Function In Healthy And Degenerative Mitral Valve Disease (Dmvd) Dogs, Karlo Romano Gicana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Cardiac time intervals (CTI) are the indices that provide information on the systolic and diastolic function of the heart. The use of echocardiography is considered the gold standard tool for recognizing cardiac diseases and for describing these CTI. However, factors such as accessibility, cost, and expertise are challenging. Hence, there is the need for an alternative diagnostic tool to measure CTI. This study aimed to investigate the use of a custom and commercially available device that simultaneously recorded both electrocardiogram (ECG) and phonocardiogram (PCG) to determine various CTI in healthy and dogs with degenerative mitral valve disease (DMVD). These measurements …