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

Digital Commons Network™

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

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 149161 - 149190 of 1739334

Full-Text Articles in Entire DC Network

Corrigendum To “Polybrominated Methoxy- And Hydroxynaphthalenes” [Turkish Journal Of Chemistry 40 (2) 2016 332-346 ], Kiymet Berki̇l Akar, Osman Çakmak, Tuncay Tunç Aug 2024

Corrigendum To “Polybrominated Methoxy- And Hydroxynaphthalenes” [Turkish Journal Of Chemistry 40 (2) 2016 332-346 ], Kiymet Berki̇l Akar, Osman Çakmak, Tuncay Tunç

Turkish Journal of Chemistry

This corrigendum is to address an issue regarding the manuscript’s previous publication. The authors have regrettably noticed that the incorrect version of the figure and crystal data was used in the original published version of this paper. To rectify this oversight and ensure the accuracy of the published work the correct figure and data are included for your reference.

Link to the original article: https://journals.tubitak.gov.tr/chem/vol40/iss2/11/


Zero-Burning Policy In Land Preparation: Social Changes And Its Impact On Communities And The Environment, Sulistya Ekawati, Robert Siburian, Surati Surati, Ari Nurlia, Yanarita Yanarita, Letsu Vella Sundary Aug 2024

Zero-Burning Policy In Land Preparation: Social Changes And Its Impact On Communities And The Environment, Sulistya Ekawati, Robert Siburian, Surati Surati, Ari Nurlia, Yanarita Yanarita, Letsu Vella Sundary

Forest and Society

In Indonesia, forest and land fires have become an annual occurrence, with devastating effects. Following major fires in 2015, the government implemented policies restricting the use of fire in land preparation. This policy has affected the livelihoods of traditional farmers who still use fire for land clearing. The research aims to analyze the social changes that have occurred among traditional farmers as a result of the policy to ban burning in land preparation, and to assess its impact. The study was undertaken in Pulang Pisau Regency (Central Kalimantan) and Ogan Komering Ilir Regency (South Sumatera). Findings reveal two types of …


Spatial Patterns Of Cumulative Hotspots And Their Relationships With Topographical Factors And Land Use In Kanchanaburi Province, Thailand, Pornperm Sae-Ngow, Chudech Losiri, Asamaporn Sitthi Aug 2024

Spatial Patterns Of Cumulative Hotspots And Their Relationships With Topographical Factors And Land Use In Kanchanaburi Province, Thailand, Pornperm Sae-Ngow, Chudech Losiri, Asamaporn Sitthi

Forest and Society

The clustering of hotspots represents fires occurring at specific locations across various time intervals, and is an increasingly important interdisciplinary research phenomenon. This article investigates the spatial distribution of cumulative hotspots and their relationships with topographical factors and land use in Kanchanaburi province. Data from the Suomi NPP VIIRS system spanning from 2012 to 2021 were utilized for the analysis of Getis-Ord (Gi*) spatial autocorrelation using Fire Radiative Power values. The analysis included the correlation with topographic data such as elevation, slope, aspect, and overlay with land use data. The results reveal that significant hotspots are concentrated in the districts …


Livelihood Vulnerability To Climate Change Of Casava Smallholders In Central Highlands Of Vietnam, Sen Lê, Hac Hien Nguyen Aug 2024

Livelihood Vulnerability To Climate Change Of Casava Smallholders In Central Highlands Of Vietnam, Sen Lê, Hac Hien Nguyen

Forest and Society

This study utilized the Livelihood Vulnerability Index (LVI) within the IPCC framework (LVI-IPCC) for cassava farming households in the central highlands of Vietnam. Data were gathered from a household survey (364 households) in Krong Bong and Ea Kar districts, Dak Lak province, in-depth interviews (22 key informants) and two focus group discussions. By analyzing variations in LVI components and conducting a Poisson regression analysis, the results revealed that cassava farming households in the studied areas exhibited moderate vulnerability to climate change and variability. Variations in vulnerability levels were observed between the two districts, with disparities found across sensitivity, exposure, and …


Nadeau Earns Grant To Create Spanish Medical Textbook, Chris Francis Aug 2024

Nadeau Earns Grant To Create Spanish Medical Textbook, Chris Francis

News and Events (Discontinued Series)

No abstract provided.


Unraveling Factors Influencing Local Willingness To Participate In Sustainable Komodo Conservation And Protected Area Tourism, Imelda Masni Juniaty Sianipar, Chun-Hung Lee, Hurng-Jyuhn Wang, Doo-Chul Kim, I Wayan Koko Suryawan Aug 2024

Unraveling Factors Influencing Local Willingness To Participate In Sustainable Komodo Conservation And Protected Area Tourism, Imelda Masni Juniaty Sianipar, Chun-Hung Lee, Hurng-Jyuhn Wang, Doo-Chul Kim, I Wayan Koko Suryawan

Forest and Society

Komodo National Park is at the forefront of balancing environmental conservation with the challenges and opportunities of sustainable tourism. This research delves into the attitudes and engagement levels of the local communities within Komodo's distinctive ecological context, aiming to unravel the factors that drive or hinder their involvement in sustainable tourism and conservation activities. Through Exploratory Factor Analysis, we distilled key influences on community engagement, followed by a K-Mean Cluster Analysis to segment the community by their involvement levels. Logistic Regression was then employed to explore the likelihood of continued participation in these initiatives. The analysis identified three primary factors …


Why Is Multi-Business Forestry Needed To Overcome The Low Performance Of Forestry Governance And Food Security In Indonesia?, Suryanto Suryanto, Dodik Ridho Nurrochmat, Suria Darma Tarigan, Iskandar Zulkarnaen Siregar, Ishak Yassir, Mangarah Silalahi, Irdika Mansur, Rhett D. Harisson, Agus Wahyudi, Lutfy Abdulah Aug 2024

Why Is Multi-Business Forestry Needed To Overcome The Low Performance Of Forestry Governance And Food Security In Indonesia?, Suryanto Suryanto, Dodik Ridho Nurrochmat, Suria Darma Tarigan, Iskandar Zulkarnaen Siregar, Ishak Yassir, Mangarah Silalahi, Irdika Mansur, Rhett D. Harisson, Agus Wahyudi, Lutfy Abdulah

Forest and Society

The 0.6% contribution of the forestry sector to GDP is considered very low despite 64.1% of Indonesia's land area being allocated as forests. Most of the 64.8% production forest allocated is not yet optimized for strengthening national food security, in which Indonesia is ranked 65th in the world. Therefore, an innovative forest management system is needed to synergize timber and non-timber production. This paper presents a multi-business forestry (Mb-F) implementation strategy analyzed through a dynamic system-based multi-criterion decision-making tool named Super Model Mb-F (SM Mb-F). SM Mb-F is built based on a causal loop diagram (CLD), which describes the dynamic …


Forest Tourism In Southeast Asia: A Bibliometric Analysis, Anang Dwi Santoso, Sajida Sajida, Yusnaini Yusnaini Aug 2024

Forest Tourism In Southeast Asia: A Bibliometric Analysis, Anang Dwi Santoso, Sajida Sajida, Yusnaini Yusnaini

Forest and Society

With the potential to bring about considerable economic, social, and environmental advantages, forest tourism has emerged as a crucial industry for sustainable development in Southeast Asia. However, one of the biggest challenges is figuring out how to balance the consumption of natural resources with their conservation. As a result, this study uses bibliometric analysis to shed light on Southeast Asian forest tourism research. The Bibliometric R program was used in this study to assess a total of 174 articles that were chosen from the Scopus database using search criteria that included keywords such as forest, forestry, tourism, and touristry, limited …


Defining Relevant Markets In Digital Ecosystems, Daniel A. Crane Aug 2024

Defining Relevant Markets In Digital Ecosystems, Daniel A. Crane

Articles

Traditional market definition focuses on the substitutability of two products or geographies. In digital ecosystems, competition often occurs in important ways that elide definition in conventional substitutability terms. This Article considers three kinds of economic rivalry that do not fit the conventional market definition mold: (1) Single-side competition: In two sided markets, firms may compete on just one side of the market. For example, Google and Facebook compete for the same advertisers, but their users on the other side of the market do not necessarily think of the offerings (social media and universal search) as substitutes; (2) Ecosystem competition: Technology …


Investigation Of Distributed Additive Manufacturing For 3d Printed Headband Component During Global Supply Chain Disruptions, Elizabeth M. Mamros, Saketh Kantipudi, Matthew C. Eaton, Jinjin Ha, Brad L. Kinsey Aug 2024

Investigation Of Distributed Additive Manufacturing For 3d Printed Headband Component During Global Supply Chain Disruptions, Elizabeth M. Mamros, Saketh Kantipudi, Matthew C. Eaton, Jinjin Ha, Brad L. Kinsey

Faculty Conference Papers and Presentations

During the COVID-19 global pandemic, a shortage of personal protective equipment (PPE) occurred. Manufacturers of these critical products were unable to keep up with the growing demands as the situation evolved. Most face shields, a common type of PPE, include a headband component to provide the appropriate fit for the user and curvature for the clear face shield attachment. To mitigate this shortage in the local region, the Portsmouth Naval Shipyard (PNSY) generated a computeraided design (CAD) file for the headband component and asked the University of New Hampshire (UNH) to manufacture it with all available 3D printers, including printers …


Beyond Boundaries: Third Space Leadership In Schools, Corinne Brion Aug 2024

Beyond Boundaries: Third Space Leadership In Schools, Corinne Brion

Educational Leadership Faculty Publications

This case study is relevant to practicing and prospective leaders because it raises issues related to third space leadership. I define third space leadership as the spaces/places between school and home, school and before or after school programs, school, and extra-curricular activities, such as the commute in a school bus. Third space leadership is grounded in adaptive leadership, cultural proficiency, equity, diversity, inclusion, and belonging. This teaching case study exposes educational administrators to a holistic approach to leadership that includes the in-between spaces that are integral parts and moments of students’ educational journeys. The Teaching Notes outline key concepts on …


Library Hosts Doctoral Students From Mexico, Hector Escobar, Erik Ziedses Des Plantes, Henry Handley Aug 2024

Library Hosts Doctoral Students From Mexico, Hector Escobar, Erik Ziedses Des Plantes, Henry Handley

University Libraries Blog Archive

In July 2023 and again this year, the University of Dayton Libraries hosted doctoral students from Anáhuac University during a weeklong immersion with the School of Engineering.


Life Span Development, Psy 3200, Syllabus, Maria Bartolomeo-Maida Dr. Aug 2024

Life Span Development, Psy 3200, Syllabus, Maria Bartolomeo-Maida Dr.

Open Educational Resources

This Zero-Textbook Cost Syllabus was funded by the CUNY OER Initiative at Kingsborough Community College. It covers al topics pertaining to developmental psychology for the Lifespan Development course, PSY 3200. Introduction to Psychology is a prerequisite for this course, and this course is also needed for students going into the nursing and health professions.


Analysis Of The Factors Affecting The Oil Recovery From Oilseeds In A Multistage Crosscurrent Leaching Process, Samuel V. Manyele Aug 2024

Analysis Of The Factors Affecting The Oil Recovery From Oilseeds In A Multistage Crosscurrent Leaching Process, Samuel V. Manyele

Tanzania Journal of Engineering and Technology (TJET)

The analysis of the total oil recovery from oilseeds in a multi-stage crosscurrent leaching process is presented. The model created using mass balance equations for three stages was used to analyze the factors affecting total oil recovery, To. The key performance factors (raw meal feed flow rate, solvent feed flow rate in each stage, solvent distribution factor for each stage, percent oil in the raw meal (Poil), solids to solution ratio in the underflow (N), solvent to solids ratio (SSR), solvent to oil ratio (SOR) and wash ratio (WR) were varied while assessing To. While SSRi and SORi ranged from …


Data Communication Over Power-Lines: A Review On Technical, And Applications Challenges, Abdi Abdalla Aug 2024

Data Communication Over Power-Lines: A Review On Technical, And Applications Challenges, Abdi Abdalla

Tanzania Journal of Engineering and Technology (TJET)

This paper presents a review study on the data communication over power-lines, commonly referred to as power-line carrier, power-line communication (PLC), mains communications, or power-line digital subscriber line (PDSL). This study examines the technical and application advantages and challenges associated with adopting PLC as a preferred alternative technology for wideband or broadband data communication. The broader coverage area of the PLC network gives it a distinct advantage over other communication network technologies. Additionally, implementing a communication system using the existing power-line network is more cost-effective and less time-consuming compared to constructing a new network from scratch. However, the primary challenge …


Development And Testing Of Small-Scale Flash Dryer For Maize Bran, Eden Ngowi Aug 2024

Development And Testing Of Small-Scale Flash Dryer For Maize Bran, Eden Ngowi

Tanzania Journal of Engineering and Technology (TJET)

Sun drying is the most common technique used to dry various food products due to its economic convenience. However, it is not effective owing to its unreliable nature leading to microbial deterioration and aflatoxin contamination of food. In Tanzania, about 1.3 million tonnes of maize bran are at risk of deterioration annually due to improper drying. The aim of this study was to design, fabricate and test an efficient small-scale flash dryer for maize bran. Using principles of material and energy balance, a small-scale flash dryer with a throughput of 500 kg of dry product per hour was designed resulting …


‘‘Domicilelessness’’ And Livelihoods In Urban Areas: Case Of Maasai In Dar Es Salaam, Tanzania, Ombeni Swai Aug 2024

‘‘Domicilelessness’’ And Livelihoods In Urban Areas: Case Of Maasai In Dar Es Salaam, Tanzania, Ombeni Swai

Tanzania Journal of Engineering and Technology (TJET)

The study aimed at demonstrating Maasai migration into Dar es Salaam urban areas and their challenges in accessing accommodation. Methodologically, the study deployed secondary data analysis following a descriptive research design. Furthermore, this study was conducted through both qualitative and quantitative research approaches. The study was conducted from 2018 to 2022 of which a random sample of 100 (N=100) was targeted. The data was analyzed using the Statistical Package for Social Sciences (SPSS Version 16). Findings: The Maasai means of accommodation are divided into four main categories: completed houses (6%), under-construction sites (39%), halfway constructed and abandoned structures (31%), and …


The Effects Of Corporate Culture On Firm Growth: Evidence From Tanzania’S Construction Firms, Fred P. Okangi Aug 2024

The Effects Of Corporate Culture On Firm Growth: Evidence From Tanzania’S Construction Firms, Fred P. Okangi

Tanzania Journal of Engineering and Technology (TJET)

Corporate culture is one of those important aspects that determine the growth of firms. This study investigates the effects of the different types of corporate culture on the growth of Tanzania’s local construction firms. A survey of 227 Tanzania’s construction firms was undertaken using semi-structured questionnaire. The data collected were quantitatively analysed using Stata 13.0 software. The study results indicate that only the hierarchy type of corporate culture positively and significantly impacts the growth of Tanzania’s construction firms. The other types of corporate culture, such as adhocracy, market, and clan had insignificant effects on the growth of the construction firms …


Exploring The Transformation Of Sustainable Collective Spaces: A Study From Mlalakuwa Informal Settlement, Jacob Lutta Aug 2024

Exploring The Transformation Of Sustainable Collective Spaces: A Study From Mlalakuwa Informal Settlement, Jacob Lutta

Tanzania Journal of Engineering and Technology (TJET)

A major challenge in collective space transformation is addressing the complexity of informal urbanisation in developing countries. Using a case study approach, this paper examines the concerns related to a particular informal settlement's sustainable collective space transformation. One of the key findings is that the absence of formal rules and regulations in the development of informal settlements in combination with land-grabbing leads to the absence of open spaces that could be used collectively. It is observed that sustainability in urban development is another body of critical thought that integrates several streams of current urban elements and embodies various conceptions of …


Investigations Of Cell Tower Antennas Parameters On Reduction Of Radio Frequency Radiation Levels From Radio Base Stations, Florence U. Rashidi Aug 2024

Investigations Of Cell Tower Antennas Parameters On Reduction Of Radio Frequency Radiation Levels From Radio Base Stations, Florence U. Rashidi

Tanzania Journal of Engineering and Technology (TJET)

The widespread deployment of mobile cellular base stations in populated areas has raised public health concerns due to increased exposure to radio frequency (RF) radiation emissions. Exposure to high levels of RF radiation can have potential thermal and non-thermal biological effects. Optimizing the configuration of cell tower antenna parameters is crucial for mitigating these radiation levels. This study therefore aims at systematically investigating the influence of different cell tower antenna parameters on reducing the RF radiation levels from mobile base stations. Field measurements were conducted at two cell sites shared by multiple mobile operators. Electric field strengths were measured at …


Lean Manufacturing Practices In Tanzania: Exploring Awareness, Training And Capital Investment, Francis D. Sinkamba Aug 2024

Lean Manufacturing Practices In Tanzania: Exploring Awareness, Training And Capital Investment, Francis D. Sinkamba

Tanzania Journal of Engineering and Technology (TJET)

With the growing competition among industries in the world, manufacturing industries are now forced to adopt the Lean Manufacturing philosophy to improve their competitive abilities. The adoption of the philosophy is very low in developing countries such as Tanzania, as is demonstrated with 1% of publications and the lack of knowledge and capital for Lean Manufacturing implementation causes this. Furthermore, the contribution of the sector to the Gross Domestic Product in Tanzania is low and stands at 8.4%. The study wants to bridge the gap in training, capital and awareness of Lean Manufacturing in Tanzania. Survey and purposive sampling techniques …


Physical Activity Modifies The Risk Of Incident Cardiac Conduction Disorders Upon Inflammation: A Population-Based Cohort Study, Haiyan Zhao, Man Li, Dan Wu, Shuohua Chen, Chenrui Zhu, Yulong Lan, Hongmin Liu, Yuntao Wu, Shouling Wu Aug 2024

Physical Activity Modifies The Risk Of Incident Cardiac Conduction Disorders Upon Inflammation: A Population-Based Cohort Study, Haiyan Zhao, Man Li, Dan Wu, Shuohua Chen, Chenrui Zhu, Yulong Lan, Hongmin Liu, Yuntao Wu, Shouling Wu

Research outputs 2022 to 2026

BACKGROUND: Emerging evidence suggests a central role for inflammation in cardiac conduction disorder (CCD). It is unknown whether habitual physical activity could modulate the inflammation-associated risks of incident CCD in the general population. METHODS AND RESULTS: This population-based cohort was derived from the China Kailuan study, including a total of 97 192 participants without prior CCD. The end points included incident CCD and its subcategories (atrioventricular block and bundlebranch block). Systemic inflammation was indicated by the monocyte-to-lymphocyte ratio (MLR). Over a median 10.91-year follow-up, 3747 cases of CCD occurred, with 1062 cases of atrioventricular block and 2697 cases of bundle-branch …


Performance Of Gfrp-Confined Rubberized Engineered Cementitious Composite Columns, Mahmoud T. Nawar, Mohamed Selim, Mahmoud Zaglal, Ayman El-Zohairy Aug 2024

Performance Of Gfrp-Confined Rubberized Engineered Cementitious Composite Columns, Mahmoud T. Nawar, Mohamed Selim, Mahmoud Zaglal, Ayman El-Zohairy

Faculty Publications

In coastal regions, the deterioration of structures and bridges due to environmental conditions and corrosion is a significant concern. To combat these issues, the use of corrosion-resistant materials like fiber-reinforced polymers (FRPs) materials, engineered cementitious composites (ECCs), and rubberized ECCs (RECC) shows promise as normal concrete (NC) alternatives by providing increased ductility and energy absorption properties. The effectiveness of confining concrete columns using GFRP tubes with ECC/RECC was assessed in this research by evaluating their performance through compression and push-out tests. The study explored key parameters such as GFRP tube thickness and the presence of shear connectors along the tube …


Evaluation Of Business-Driven Reference Architecture For Big Data Analytics Implementation By Public Sector Organizations In Resource-Constrained Setting: A Case Study Of Uganda, Matendo Didas Aug 2024

Evaluation Of Business-Driven Reference Architecture For Big Data Analytics Implementation By Public Sector Organizations In Resource-Constrained Setting: A Case Study Of Uganda, Matendo Didas

Tanzania Journal of Engineering and Technology (TJET)

Big Data Analytics (BDA) is a new area at the nexus of agenda, public sector organizations, and government business. It may satisfy the growing need for trustworthy, cost-effective services in the public sector for better, more informed decision-making processes. BDA has been proposed on the planning schedules of several public sector organizations and the government. Therefore, from the previous work, using Uganda as a case study, specifically the Uganda Bureau of Statistics (UBOS), Ministry of Health (MoH), and Ministry of Education and Sports (MoES), this study aims to evaluate a designed Business-Driven Reference Architecture for Big Data Analytics Implementation (BRABDAI) …


Assessment Of The Factors Affecting The National Ict Broadband Backbone (Nictbb) Systems Restoration Time, Victoria Mahabi Aug 2024

Assessment Of The Factors Affecting The National Ict Broadband Backbone (Nictbb) Systems Restoration Time, Victoria Mahabi

Tanzania Journal of Engineering and Technology (TJET)

This study investigates the factors affecting the prolonged system restoration time when national ICT broadband backbone (NICTBB) services are affected by breakdown incidents. NICTBB is the government-owned backbone infrastructure constructed nationally by the Republic of Tanzania to increase the usage of ICT for equitable and sustainable socio-economic development and accelerate poverty reduction. This study utilised a mixture of exploratory and descriptive study approaches. The sample size determination was executed using purposing and simple random sampling, thus involving 289 respondents. The data reliability test was undertaken. It was followed by factor analysis, analysis of variances (ANOVA), linear regression analysis, and confirmed …


Modeling The Influence Of Internal Factors On Vehicular Mobility Performance, Aziz Mdimi Aug 2024

Modeling The Influence Of Internal Factors On Vehicular Mobility Performance, Aziz Mdimi

Tanzania Journal of Engineering and Technology (TJET)

Traffic mobility is significantly influenced by road conditions and the internal factors governing vehicular performance. Internal factors play a crucial role in vehicular mobility, influencing vehicles operate and performance. While existing vehicular mobility models primarily address external factors, external factors such as governor, engine, gear train and differential unit remain underexplored. This study formulates a comprehensive model to address this gap, focusing on the internal components that affect vehicular mobility. The proposed model employs both analytical and numerical methods to derive transfer functions for these subsystems using Matrix Laboratory (MATLAB), aiming to capture the dynamic behavior of vehicles under various …


Brain-Hand Function Relationships Based On Level Of Grasp Function In Chronic Left-Hemisphere Stroke, Elizabeth Rizor Aug 2024

Brain-Hand Function Relationships Based On Level Of Grasp Function In Chronic Left-Hemisphere Stroke, Elizabeth Rizor

Faculty Publications

Background and Objective

The biomarkers of hand function may differ based on level of motor impairment after stroke. The objective of this study was to determine the relationship between resting state functional connectivity (RsFC) and unimanual contralesional hand function after stroke and whether brain-behavior relationships differ based on level of grasp function.

Methods

Sixty-two individuals with chronic, left-hemisphere stroke were separated into three functional levels based on Box and Blocks Test performance with the contralesional hand: Low (moved 0 blocks), Moderate (moved >0% but < 90% of blocks relative to the ipsilesional hand), and High (moved ≥90% of blocks relative to the ipsilesional hand).

Results

RsFC in the ipsilesional and interhemispheric motor networks was reduced in the Low group compared …


The Balancing Act Of Justice: Juggling Affects In The Pursuit Of Fairness, Andrea Allen Aug 2024

The Balancing Act Of Justice: Juggling Affects In The Pursuit Of Fairness, Andrea Allen

Arts & Sciences Graduate Student Theses and Dissertations

In my dissertation, I aim to examine the different identifications and affects that occur in the pursuit of justice as explored in early modern texts. I explore the relationship, and differences, between pity, compassion, and mercy in various early modern texts such as Chapman, Marston, and Jonson’s Eastward Hoe; Shakespeare’s King Lear and Measure for Measure; Spenser’s Faerie Queene; and Middleton’s The Old Law. I look at the role that the imagination plays in allowing people to identify with the pain and perspectives of others, especially as it enhances or limits one's ability to sympathize with victims and offenders. More …


Photoelectrochemistry Of Redox-Active Self-Assembled Monolayers Formed On N-Si/Au Nanoparticle Photoelectrodes, Kayla M. Mancini, Yousef Khatib, Lauren Shahine, Glen D. O’Neil Aug 2024

Photoelectrochemistry Of Redox-Active Self-Assembled Monolayers Formed On N-Si/Au Nanoparticle Photoelectrodes, Kayla M. Mancini, Yousef Khatib, Lauren Shahine, Glen D. O’Neil

Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works

Controlling the chemistry of the electrode-solution interface is critically important for applications in sensing, energy storage, corrosion prevention, molecular electronics, and surface patterning. While numerous methods of chemically modifying electrodes exist, self-assembled monolayers (SAMs) containing redox-active moieties are particularly important because they are easy to prepare, have well-defined interfaces, and can exhibit textbook photoelectrochemistry. Here, we investigate the photoelectrochemistry of redox-active SAMs on semiconductor/metal interfaces, where the SAM is attached to the metal site instead of the semiconductor. n-Si/Au photoelectrodes were fabricated using a benchtop electrodeposition procedure and subsequently modified by immersion in aqueous solutions of (ferrocenyl)hexanethiol and mercaptohexanol. We …


3d Mr Fingerprinting For Dynamic Contrast-Enhanced Imaging Of Whole Mouse Brain, Yuran Zhu, Yuning Gu, Walter Zhao, Jiahao Lu, Junqing Zhu, Christina J. Macaskill, Andrew Dupuis, Mark A. Griswold, Dan Ma, Chris A. Flask, Xin Yu Aug 2024

3d Mr Fingerprinting For Dynamic Contrast-Enhanced Imaging Of Whole Mouse Brain, Yuran Zhu, Yuning Gu, Walter Zhao, Jiahao Lu, Junqing Zhu, Christina J. Macaskill, Andrew Dupuis, Mark A. Griswold, Dan Ma, Chris A. Flask, Xin Yu

Faculty Scholarship

Purpose: Quantitative MRI enables direct quantification of contrast agent concentrations in contrast-enhanced scans. However, the lengthy scan times required by conventional methods are inadequate for tracking contrast agent transport dynamically in mouse brain. We developed a 3D MR fingerprinting (MRF) method for simultaneous T1 and T2 mapping across the whole mouse brain with 4.3-min temporal resolution. Method: We designed a 3D MRF sequence with variable acquisition segment lengths and magnetization preparations on a 9.4T preclinical MRI scanner. Model-based reconstruction approaches were employed to improve the accuracy and speed of MRF acquisition. The method's accuracy for T1 and T2 measurements was …