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Articles 73261 - 73290 of 74015
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Life Before Birth: A Thematic Analysis Of Memories Of Coming Into Life Part 1: Recollections Of Another Realm, Jenny Wade
International Journal of Transpersonal Studies
Autobiographic memories prior to birth remain controversial in psychology because such memories are traditionally believed to begin much later when some sense of self is formed. Prenatal sentience, including fetal learning, occurs in species from arthropods to humans, and evidence for autobiographic memories from pre- and neo-natal humans has typically come from clinical case histories of altered-state regression techniques eliciting records from adults or clinical case histories of children in normal states. This thematic analysis examined 68 “earliest memory” narratives submitted to an independent website to explore the question: what do people who claim to remember how they came into …
Quantum Tunneling And Exceptional Human Experiences: Illustrating Different Skepticisms In Physics And Psychology, Glenn Hartelius
Quantum Tunneling And Exceptional Human Experiences: Illustrating Different Skepticisms In Physics And Psychology, Glenn Hartelius
International Journal of Transpersonal Studies
Quantum tunneling is a phenomenon where a particle appears on the other side of an energy barrier that it does not have enough energy to pass through, according to classical physics. This notion, first proposed by a German physicist in 1927, runs improbably counter to common sense and to rules thought for hundreds of years to govern physics. Acceptance of this and other quantum phenomena has required the reconceptualization of subatomic particles from solid bits of matter to probability clouds that extend infinitely in every direction. As such, quantum physics has required a skepticism driven by the need for sound …
Eliciting Awe In The Spectator: The Case Of A Dhrupad-Based Dance Performance, Alfonso Santarpia, Andrée Martin, Armando Menicacci, Pierre De Oliveira, Daniel Lemieux, Laurence Éthier, Caroline Charbonneau, Bruno Pucella, Christophe Flambard, Les Frères Gundecha, Louis-Charles Lusignan, Alice Bourgasser, Élisabeth-Anne Dorléans, Ariane Dubé-Lavigne, Angélique Poulin
Eliciting Awe In The Spectator: The Case Of A Dhrupad-Based Dance Performance, Alfonso Santarpia, Andrée Martin, Armando Menicacci, Pierre De Oliveira, Daniel Lemieux, Laurence Éthier, Caroline Charbonneau, Bruno Pucella, Christophe Flambard, Les Frères Gundecha, Louis-Charles Lusignan, Alice Bourgasser, Élisabeth-Anne Dorléans, Ariane Dubé-Lavigne, Angélique Poulin
International Journal of Transpersonal Studies
This paper describes “Kalos, eîdos, skopeîn,” an immersive Dhrupad-based dance installation designed to elicit feelings of awe in the spectators, in a real-life artistic context. This study used a mixed-methods approach in order to explore spectators’ awe experience (N=45), using specific scales and interpretative phenomenological analysis. Results suggested that “Kalos, eîdos, skopeîn,” with its combination of nature motifs and the slow dance-walk associated with the Dhrupad music in the choreography, was able to produce awe-related moments in some spectators and inspire a degree of positive emotions. Our qualitative results viewed awe explicitly as a positive emotion and showed that generally …
Dielectric Loss Tangent Extraction Using Two Single-Ended Striplines Of Different Width, Jiangshuai Li, Yuanzhuo Liu, Liang Liu, Shengxuan Xia, Scott Hinaga, Victor Khilkevich
Dielectric Loss Tangent Extraction Using Two Single-Ended Striplines Of Different Width, Jiangshuai Li, Yuanzhuo Liu, Liang Liu, Shengxuan Xia, Scott Hinaga, Victor Khilkevich
Electrical and Computer Engineering Faculty Research & Creative Works
Frequency-dependent electrical properties of dielectric materials are one of the most important factors for high-speed signal integrity design. Recently a method of accurately measuring the dielectric loss tangent ($\tan \delta$) of differential lines was proposed. By taking into account the ratio between the differential and common mode per-unit-length resistances the surface roughness contribution to the total loss is eliminated and dielectric parameters can be determined. In this article a similar method is applied to a combination of two single-ended lines. To evaluate the accuracy of the extraction, the impact of the de-embedding errors was investigated, which allows to optimize the …
Practical Fixture Design For Passive Intermodulation Tests For Flexible Metallic Contacts, Shengxuan Xia, Yuchu He, Yansheng Wang, Hanfeng Wang, George Mankaruse, Danny Chan, Haicheng Zhou, Warren Lee, Nicholas Mcdonnell, Chulsoon Hwang
Practical Fixture Design For Passive Intermodulation Tests For Flexible Metallic Contacts, Shengxuan Xia, Yuchu He, Yansheng Wang, Hanfeng Wang, George Mankaruse, Danny Chan, Haicheng Zhou, Warren Lee, Nicholas Mcdonnell, Chulsoon Hwang
Electrical and Computer Engineering Faculty Research & Creative Works
Passive intermodulation (PIM) commonly exists in non-ideal metallic contacts. Since PIM typically represents an extremely low level of nonlinearity, it has not drawn enough attention over the years except for extremely high-power applications such as base stations. However, in recent years, the study on PIM has become essential in universally used consumer electronics design because of the higher requirement on the radio frequency (RF) sensitivity of wireless communications. The metal contacts caused PIM can create the sideband spectrum to interfere with the receiving band in the frequency divide duplex (FDD) mode. Therefore, the study on PIM for the frequently used …
De-Embedding For Coupled Three-Port Devices, Yuandong Guo, Bo Pu, Donghyun Kim, Jun Fan
De-Embedding For Coupled Three-Port Devices, Yuandong Guo, Bo Pu, Donghyun Kim, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
In many applications, the device under test (DUT) is embedded into a test setup. Various de-embedding techniques have been proposed to expose the real electrical behaviors of a DUT, e.g., the traditional thru-reflect-line and short-open-load-thru algorithms, where the T-matrix and its inverse form are adopted in the mathematical process. In the fields of radiofrequency and electromagnetic compatibility, a DUT may have three coupled ports, and the symmetry in the associated S-matrix breaks down, because the numbers of entry and exist ports are not equal, which results in a non-square T-matrix based upon the definitions. Given that the inverse expression of …
I2Mtc 2021 Special Issue In Ieee Transactions On Instrumentation And Measurement, Pawel Niewczas, Kristen M. Donnell, Melanie Ooi
I2Mtc 2021 Special Issue In Ieee Transactions On Instrumentation And Measurement, Pawel Niewczas, Kristen M. Donnell, Melanie Ooi
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Identification Of Volatile Organic Liquids By Combining An Array Of Fiber-Optic Sensors And Machine Learning, Wassana Naku, Anand K. Nambisan, Muhammad Roman, Chen Zhu, Rex E. Gerald, Jie Huang
Identification Of Volatile Organic Liquids By Combining An Array Of Fiber-Optic Sensors And Machine Learning, Wassana Naku, Anand K. Nambisan, Muhammad Roman, Chen Zhu, Rex E. Gerald, Jie Huang
Electrical and Computer Engineering Faculty Research & Creative Works
In This Paper, We Report an Array of Fiber-Optic Sensors based on the Fabry-Perot Interference Principle and Machine Learning-Based Analyses for Identifying Volatile Organic Liquids (VOLs). Three Optical Fiber Tip Sensors with Different Surfaces Were Included in the Array of Sensors to Improve the Accuracy for Identifying Liquids: An Intrinsic (Unmodified) Flat Cleaved End face, a Hydrophobic-Coated End face, and a Hydrophilic-Coated End face. the Time-Transient Responses of Evaporating Droplets from the Optical Fiber Tip Sensors Were Monitored and Collected Following the Controlled Immersion Tests of 11 Different Organic Liquids. a Continuous Wavelet Transform Was Used to Convert the Time-Transient …
การตอบสนองทางสรีรวิทยาและผลผลิตของข้าวต่อถ่านชีวภาพ ภายใต้สภาวะดินเค็มจากน้ำทะเลรุกล้ำ, นภัสวรรณ สุดรัตน์
การตอบสนองทางสรีรวิทยาและผลผลิตของข้าวต่อถ่านชีวภาพ ภายใต้สภาวะดินเค็มจากน้ำทะเลรุกล้ำ, นภัสวรรณ สุดรัตน์
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยนี้มีวัตถุประสงค์เพื่อ 1) คัดเลือกพันธุ์ข้าวที่สามารถทนเค็มจากพันธุ์ข้าวที่นิยมปลูกในจังหวัดฉะเชิงเทรา และ 2) ศึกษาผลของถ่านชีวภาพต่อการตอบสนองทางสรีรวิทยาและผลผลิตของข้าวภายใต้สภาวะดินเค็มจากน้ำทะเลรุกล้ำ ดำเนินการวิจัยโดยให้ต้นกล้าข้าวจำนวน 9 พันธุ์ที่มีอายุ 14 วัน ได้รับสารละลายโซเดียมคลอไรด์ที่มีค่าการนำไฟฟ้าเท่ากับ 6 เดซิซีเมนส์ต่อเมตร (50 มิลลิโมลาร์) เป็นเวลา 3 วัน และ 12 เดซิซีเมนส์ต่อเมตร (100 มิลลิโมลาร์) เป็นเวลา 7 วัน ตามลำดับ สังเกตลักษณะอาการที่ปรากฏและให้คะแนนระดับการทนเค็มตามเกณฑ์มาตรฐาน ผลการวิจัยพบว่า ข้าวพันธุ์พิษณุโลก 2 กข31 กข41 กข47 กข49 กข57 กข61 และสุพรรณบุรี 1 จัดเป็นพันธุ์ข้าวที่ค่อนข้างทนเค็ม ส่วนพันธุ์ปทุมธานี 1 เป็นพันธุ์อ่อนแอต่อความเค็ม จากนั้นปลูกข้าวพันธุ์พิษณุโลก 2 ในกระถางที่บรรจุดินเค็มจากน้ำทะเลรุกล้ำที่มีความเค็มเท่ากับ 5.09 เดซิซีเมนส์ต่อเมตร ที่ผสมด้วยอัตราส่วนถ่านชีวภาพจากแกลบต่อน้ำหนักดินร้อยละ 1 3 5 10 20 และ 30 และให้ต้นข้าวได้รับความเค็มจากสารละลายโซเดียมคลอไรด์ที่มีค่าการนำไฟฟ้าเท่ากับ 6 เดซิซีเมนส์ต่อเมตร (50 มิลลิโมลาร์) เป็นระยะเวลา 28 วัน เมื่อต้นข้าวอายุ 14 วัน เพื่อจำลองสถานการณ์การรุกล้ำของน้ำทะเลในระยะกล้า หรือเมื่อต้นข้าวอายุ 78 วัน เพื่อจำลองสถานการณ์การรุกล้ำของน้ำทะเลในระยะสืบพันธุ์ของข้าว ผลการวิจัยพบว่า อัตราส่วนถ่านชีวภาพต่อน้ำหนักดินร้อยละ 30 มีความเหมาะสมที่สุดในการลดผลกระทบจากสภาวะเค็มในระยะกล้าโดยสามารถเพิ่มอัตราการรอดชีวิตและความสูงของต้น ลดการสะสมโซเดียมในต้นและใบธง พร้อมทั้งเพิ่มจำนวนรวงต่อกอ ความยาวรวง จำนวนเมล็ดต่อรวง ร้อยละเมล็ดดี และน้ำหนัก 1000 เมล็ด ในขณะที่อัตราส่วนถ่านชีวภาพต่อน้ำหนักดินร้อยละ 10 มีความเหมาะสมที่สุดในการลดผลกระทบจากสภาวะเค็มในระยะสืบพันธุ์ของข้าวเนื่องจากสามารถเพิ่มจำนวนต้นต่อกอ ลดการสะสมโซเดียมและอัตราส่วนโซเดียมต่อโพแทสเซียมในใบธง พร้อมด้วยการเพิ่มร้อยละเมล็ดดี และน้ำหนัก 1000 เมล็ด ดังนั้น การผสมถ่านชีวภาพจากแกลบลงในดินเค็มด้วยอัตราส่วนที่เหมาะสมจึงเป็นแนวทางการลดผลกระทบจากน้ำทะเลรุกล้ำต่อข้าวทั้งในระยะกล้าและระยะสืบพันธุ์
Coping, Affirmation, Resilience, And Empowerment (Care) Program And Its Impact On Depression And Quality Of Life Among Youth Living With Depression In Banjarmasin City, Indonesia : A Mixed-Method Study, Lafi Munira
Chulalongkorn University Theses and Dissertations (Chula ETD)
Background: The national prevalence of depression among young adults in Indonesia was 29.3% for moderate and 8.0% for severe depression. There are few intervention studies on coping skills training and group cognitive therapy through internet-based intervention for youth living with depression in Indonesia. Objectives: 1) To explore participants’ perception, experience, and cope with depression before and after CARE Program; 2) To investigate effects CARE Program on depression and quality of life among youth living with depression in Banjarmasin City, Indonesia. Method: This study used a convergent parallel mixed method. A qualitative and quasi experimental with two groups pre-post tests among …
Assessment Of Psychological Impact Of Covid-19 Among Healthcare Professionals In Yangon, Myanmar, Nyein Chan Aung
Assessment Of Psychological Impact Of Covid-19 Among Healthcare Professionals In Yangon, Myanmar, Nyein Chan Aung
Chulalongkorn University Theses and Dissertations (Chula ETD)
Background: Millions of people worldwide have been infected by the Covid-19 pandemic, devastatingly affecting their physical and mental health. During the covid-19 outbreak with the delta variant in 2021, Myanmar experienced its worst healthcare crisis, resulting in work burden, exhaustion, and psychological distress among healthcare professionals. Therefore, the study aimed to determine the psychological impacts of Covid-19 on healthcare professionals in Yangon, Myanmar. Methodology: A cross-sectional study was employed to determine the prevalence and associated factors of Depression, Anxiety, Stress, and Post-traumatic stress disorder (PTSD) among healthcare professionals, who aged 18 and older with at least two years of experience …
Depolymerization Of Dealkaline Lignin In Co-Solvent System By Electrochemical Advanced Oxidation In A Microreactor, Lalida Waura-Angkura
Depolymerization Of Dealkaline Lignin In Co-Solvent System By Electrochemical Advanced Oxidation In A Microreactor, Lalida Waura-Angkura
Chulalongkorn University Theses and Dissertations (Chula ETD)
Currently, the production of fuels and chemicals heavily relies on non-renewable petroleum oil, which is projected to be depleted by 2050. Lignin is the largest source of renewable aromatic compounds rich in carboxylic and hydroxyl functional groups, thus potentially being used as a renewable alternative for the production of valuable chemicals. In light of aromatic compounds’ recovery from lignin, this work focuses on the efficient depolymerization of dealkaline lignin using the electrochemical advanced oxidation process (EAOP) under ambient conditions in a continuous-flow microreactor system. As hydroxyl radicals generated from water at the anode are the key to the EAOP and …
Numerical Simulation Study For Carbon Dioxide Sequestration In A Depleted Oil Reservoir, Romal Ramadhan
Numerical Simulation Study For Carbon Dioxide Sequestration In A Depleted Oil Reservoir, Romal Ramadhan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Due to the rise in greenhouse gas concentrations in the atmosphere, one of the most concerning issues at the moment is the climate change. One of the techniques to reduce CO2 emissions, particularly geological storage, is carbon capture and storage (CCS). This study provides the statement of how pressure build-up and CO2 injection rates impact several aspects of CO2 storage, including storage capacity, plume migration, and shut-in time. This study aims to assess the storage capacity of geological formations with different maximum pressure varying from 70% - 90% of fracture pressure to evaluate the formation response to various maximum pressure …
Development Of Paper-Based Electrochemical Device For Detection Of Biomarker Of Infectious Diseases, Chawin Srisomwat
Development Of Paper-Based Electrochemical Device For Detection Of Biomarker Of Infectious Diseases, Chawin Srisomwat
Chulalongkorn University Theses and Dissertations (Chula ETD)
This dissertation focused on the development of novel point-of-care (POC) testing devices with luminescent and electrochemical detection techniques for the detection of nucleic acid in infectious diseases. This content can be classified into two main parts: (1) the development of a POC sensing device with luminescent detection, and (2) the development of POC testing devices with electrochemical detection. In the first part, an alternating current electroluminescent device for the detection of HIV and HCV cDNA with a label-free platform was developed. The luminosity of the device increased in the presence of the target DNA. The negative charge on the backbone …
Reductant-Free Ozonolysis Of Alkenes : Acid-Catalyzed Hydration Of Criegee Intermediate, Joshua Osorio
Reductant-Free Ozonolysis Of Alkenes : Acid-Catalyzed Hydration Of Criegee Intermediate, Joshua Osorio
Chulalongkorn University Theses and Dissertations (Chula ETD)
The in-water ozonolysis of alkenes is an emerging alternative method to the conventional ozonolysis since it eliminates the requirement for a reductive work-up step using expensive and hazardous reductants such as dimethyl sulfide, triphenylphosphine, and zinc in acetic acid. Despite its greenness, it still suffers from competing reactions (such as the Baeyer-Villiger reaction and advanced oxidation process) and poor yields of the carbonyl product. Herein, we report the effect of adding an acid as a catalyst in the formation of carbonyl products from in-water ozonolysis. Styrenes and olefinic natural products were dissolved in a mixture of 95:5 (v/v) acetone-water (c.a.[c] …
Anti-Melanogenic Compounds From Litchi Chinensis Sonn. And Nephelium Lappaceum L. For Cosmeceutical Applications, Junsuda Pimpa
Anti-Melanogenic Compounds From Litchi Chinensis Sonn. And Nephelium Lappaceum L. For Cosmeceutical Applications, Junsuda Pimpa
Chulalongkorn University Theses and Dissertations (Chula ETD)
Melanogenesis is a biosynthetic process that produces the melanin pigment in human skin. Therefore, inhibition of melanin production is crucial for the development of whitening products. Thailand has many fruits processing industry, leading to big amounts of waste from inedible parts such as seeds, peels, and branches. To add value to these waste, this research study aims to investigate their inhibitory effects on melanin in B16F10 melanoma cells and cytotoxicity of eight compounds, shikimic acid (1), proanthocyanidin A-2 (2), δ-tocotrienol (3), and walsurol (4) isolated from Litchi chinensis Sonn and quercetin-3-O-rhamnoside (5), kaempferol-3-O-rhamnoside (6), kaempferol 7-O-α-L-rhamnopyranoside (7), and kaempferol-3-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside (8) …
Metabolic Alterations For Increased Glycogen And Poly(3-Hydroxybutyrate) Production In Cyanobacterium Synechocystis Sp. Pcc 6803, Nannaphat Sukkasam
Metabolic Alterations For Increased Glycogen And Poly(3-Hydroxybutyrate) Production In Cyanobacterium Synechocystis Sp. Pcc 6803, Nannaphat Sukkasam
Chulalongkorn University Theses and Dissertations (Chula ETD)
Cyanobacteria are a potential biofactory for biopolymer production because they can convert greenhouse gas carbon dioxide and light to useful biopolymers. Synechocystis sp. PCC 6803 is a widely used model cyanobacterium due to its simple genetic information and known biochemistry metabolism. This research aims to develop strategies to increase the accumulation and productivity of biopolymers, poly(3-hydroxybutyrate) (PHB) and glycogen, which are required in current and future industries. Three strategies, namely genetic engineering, metabolic inhibition using chemical treatment, and culture media optimization (regarding nitrogen supply), were studied, as well as their combination to increase the PHB and/or glycogen production. Genetic engineering …
Catalytic Hydrotreating Of Palm Oil Over Ni/Mesoporous Zeolite For Bio-Jet Fuel Production, Nipitpon Panarmasar
Catalytic Hydrotreating Of Palm Oil Over Ni/Mesoporous Zeolite For Bio-Jet Fuel Production, Nipitpon Panarmasar
Chulalongkorn University Theses and Dissertations (Chula ETD)
The production of bio-jet fuel from palm oil using different types of Ni/mesoporous zeolite. The conventional zeolites were modified into mesoporous zeolites by desilication with NaOH and micro-mesoporous post-synthesis method with SBA-15. Supported Ni-catalysts on zeolites were prepared using a wet impregnation method with a 10 wt% Ni loading. The experiments were conducted in a continuous-flow fixed-bed reactor. The reaction temperature significantly influenced palm oil conversion and the selectivity of jet-fuel range products. The Ni/USY exhibited the highest liquid and jet range selectivity at a temperature of 425°C and a pressure of 25 bar. Furthermore, the modified-support catalyst, 10 wt% …
Effects Of Articular Knee Injections On Cartilage Of Knee Osteoarthritis Patients And Development Of Rapid Decalcification Method For Articular Cartilage And Subchondral Bone, Pattaranatcha Charnwichai
Effects Of Articular Knee Injections On Cartilage Of Knee Osteoarthritis Patients And Development Of Rapid Decalcification Method For Articular Cartilage And Subchondral Bone, Pattaranatcha Charnwichai
Chulalongkorn University Theses and Dissertations (Chula ETD)
Osteoarthritis (OA) is the most common degenerative joint disease that affects articular cartilage. Intra-articular injection (IA) is one of the treatments that is used to reduce pain and relieve symptoms. Triamcinolone acetonide (TA) and hyaluronic acid (HA) are frequently used in IA injections for OA treatment. Several publications have reported effects of TA, but some of HA, on articular cartilage. Moreover, for histopathological studies, articular cartilage and subchondral bones are commonly used as samples, but the decalcification process is time consuming. Thus, this study aims to compare effects of drugs used in IA injections on cartilage and chondrocytes of osteoarthritis …
Child Life Student Approaches To And Purposes Of Play, Taylor L. Brower
Child Life Student Approaches To And Purposes Of Play, Taylor L. Brower
Graduate Theses/Dissertations
The aim of this study was to research and gain a greater understanding of what child life students are learning about play. Qualitative data was collected via Qualtrics. Participants reported learning child-led play, structured play, and expressive play as learned approaches to play. Students reported the most learned purpose of play being self–expression, and normalization. Participants provided self-given definitions of the theories and concepts of play as the survey prompted in keeping with the researcher’s goals. The Daisy model in the communication theory Coordinated Management of Meaning provided the theoretical framework, supporting preparation or familiarization, express emotions, process, or cope, …
Sheltered Cohort: A Restorative Approach To Relational Conflict And Disempowering Policies At A Men’S Homeless Shelter, Shaun A. Sletten
Sheltered Cohort: A Restorative Approach To Relational Conflict And Disempowering Policies At A Men’S Homeless Shelter, Shaun A. Sletten
Graduate Theses/Dissertations
Although homeless shelters provide refuge, they also present several challenges that can negatively affect an individual's sense of internal and external control. A mix-method design was used to explore and address these challenges. Participants (N = 12) were recruited from a men’s homeless shelter via the snowball method. To identify the challenges, in-person, semistructured interviews were conducted. Participants discussed barriers that included being around others who displayed abnormal and deviant behavior, and disparaging policies that censored and restricted basic decision-making processes. Once the challenges were identified, a restorative technique called circles was utilized to increase participants' self-efficacy and satisfaction …
Enhanced Convolutional Neural Network For Image-Based Steganalysis In Spatial Domain Using Spatial Rich Model And 2d Gabor Filters, Alaaldin Dwaik
Enhanced Convolutional Neural Network For Image-Based Steganalysis In Spatial Domain Using Spatial Rich Model And 2d Gabor Filters, Alaaldin Dwaik
Graduate Theses/Dissertations
During the past decade, many methods have been introduced to handle the image-based steganalysis problem. Traditional steganalysis methods are based on the two-step machine learning mechanism that consists of extracting and classifying phases. Most recent solutions are based on deep convolution neural networks (CNNs), which combine feature extraction and classification in one step. CNN-based steganalysis methods provide superior performance. These CNNs are designed to improve the detection rate by using a set of predefined filters for the pre-processing phase. In this thesis, I propose a CNN model that consists of two convolution layers for pre-processing and features extraction, and four …
Dot Product Bounds In Galois Rings, David Lee Crosby
Dot Product Bounds In Galois Rings, David Lee Crosby
Graduate Theses/Dissertations
We consider the Erdős Distance Conjecture in the context of dot products in Galois rings and prove results for single dot products and pairs of dot products.
Intracellular Trafficking And Distribution Of Cd And Inp Quantum Dots In Hela And Ml-1 Thyroid Cancer Cells, Min Zhang
Graduate Theses/Dissertations
The study of the interaction of engineered nanoparticles, including quantum dots (QDs), with cellular constituents and the kinetics of their localization and transport, has provided new insights into their biological consequences in cancers and for the development of effective cancer therapies. The present study aims to elucidate the toxicity and intracellular transport kinetics of CdSe/ZnS and InP/ZnS QDs in late-stage ML-1 thyroid cancer using well-tested HeLa cells as a control. The XTT viability assay showed that ML-1 cells, and non-cancerous mouse fibroblast cells, exhibit no viability defect in response to these QDs, whereas HeLa cell viability decreases. These results suggest …
Elucidating The Role Of Hemodynamic Force In Regulating The Attachment Of Vascular Smooth Muscle Cells (Vsmcs) To Maturing Vessels During Mouse Embryonic Development, Israt Jahan
Graduate Theses/Dissertations
Blood vessel maturation is characterized by the recruitment and attachment of vascular smooth muscle cells (vSMCs) around immature blood vessels, which ultimately form the tunica media. Improper maturation can lead to vascular birth defects ranging from minor birthmarks to lethal brain aneurysms. Previously, our lab demonstrated that hemodynamic force plays an important role to regulate vSMCs recruitment from neighboring low-flow to high-flow vessels followed by the attachment of these vSMCs to the high-flow vessels. To understand the reason for the preferred attachment of vSMCs to high-flow vessels, instead of low-flow vessels, I hypothesize that hemodynamic force modulates the expression of …
Utilizing Virtual Reality Goggles During Pediatric Laceration Repairs To Reduce Perceived Pain In Pediatric Patients, Emily C. Bozzer
Utilizing Virtual Reality Goggles During Pediatric Laceration Repairs To Reduce Perceived Pain In Pediatric Patients, Emily C. Bozzer
Graduate Theses/Dissertations
In pediatric emergency departments, several providers assess pediatric patients in need a laceration repair, require procedural sedation in order to ensure compliance and complete the laceration repair. This study explored one safe alternative to procedural sedation during pediatric laceration repairs by assessing what pain scores pediatric patients report when undergoing a laceration repair utilizing virtual reality goggles. Pediatric patients ages 6-17 years old perceived pain scores utilizing FACES pain scale was documented. This study found a majority of patients reported lower pain scores during the laceration repair in comparison to their baseline pain score.
Structural, Electrical And Optical Properties Of Copper Oxide Phase Mixture: An Active Layer Of Solar Cell, Rifat Ara Shams
Structural, Electrical And Optical Properties Of Copper Oxide Phase Mixture: An Active Layer Of Solar Cell, Rifat Ara Shams
Graduate Theses/Dissertations
Both CuO and Cu2O have been well studied and implemented individually as an active layer of a solar cell from early age of manufacturing. A mixture of these two-phase contents at different ratios can bring variance in absorbance which can present new and diverse aspect in solar cell fabrication with added efficiency. Previous works were successful to vary the phase mixture, and the nanostructures provided very high absorption co-efficient but poor optical response on electrical conductivity. The goal of this research is to find out the optimum parameter for the phase mixture of copper oxide with high absorption coefficient as …
Stress And Its Interventions In Undergraduate College Students During Covid-19, Katie A. Jones
Stress And Its Interventions In Undergraduate College Students During Covid-19, Katie A. Jones
Graduate Theses/Dissertations
Though stress in postsecondary education is a highly researched topic, the emergence of the COVID-19 pandemic has created many new questions that require answers. It is important to connect total perceived stress in undergraduate students with academic, COVID-19, and distance-learning factors and examine the effectiveness of interventions on stress and anxiety during the pandemic. This research determines the efficacy of mindfulness stress interventions (cognitive-behavioral, guided meditation, and music) for individual differences in stress, self- efficacy, and anxiety and links these variables to performance. This study measures levels of different types of stress (total perceived, distance-learning, academic, and COVID-19) for undergraduate …
Development Of Peg-B-Pla Based Micelles For Neutralization Of A Toxic Peptide, Giselle Campos
Development Of Peg-B-Pla Based Micelles For Neutralization Of A Toxic Peptide, Giselle Campos
Graduate Theses/Dissertations
I herein report the preparation and characterization of PEG-b-PLA block copolymer micelles and PEG-b-PLA/PLA mixed micelles as potential “plastic antidotes” for a toxic peptide, melittin. PEG-b-PLA micelles have been used in a number of biomedical applications for their biodegradability and biocompatibility. Along these lines, I investigated the colloidal stability and the peptide absorption properties of PEG-b-PLA/PLA mixed micelles. A series of PEG-b-PLA block copolymer micelles and PEG-b-PLA/PLA mixed micelles were prepared, and their colloidal stability was studied. The hydrodynamic diameters of stable micelles were determined by using Dynamic …
Spatial And Temporal Heterogeneity Of Hyporheic Invertebrates In An Ozark Stream, David Fleshman
Spatial And Temporal Heterogeneity Of Hyporheic Invertebrates In An Ozark Stream, David Fleshman
Graduate Theses/Dissertations
The hyporheic zone (HZ), an ecotone between surface water and groundwater in streams, provides extensive but underappreciated habitat for invertebrates in alluvial systems like the gravel-bed streams common in the Ozark highlands. Relative to its importance as a habitat, little is known about spatial distribution and response to disturbance by invertebrates in the HZ. In riffle-pool systems, surface water typically enters the HZ at the head of riffles (downwelling) and returns to the surface at the tail of riffles (upwelling). Previous research has found differences in invertebrate communities and environmental variables between upwelling and downwelling zones, but results have been …