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Perceptions Of Department Chairs And Program Directors Of Ethnic Studies In The California State University System: A Convergent Parallel Mixed Methods Study, Christopher Jarrett Cox Jul 2025

Perceptions Of Department Chairs And Program Directors Of Ethnic Studies In The California State University System: A Convergent Parallel Mixed Methods Study, Christopher Jarrett Cox

Dissertations

The purpose of this dissertation study is to explore the conditions of Ethnic Studies departments and programs in the California State University (CSU) system nine years after the release of the CSU Ethnic Studies Task Force report released in 2016. Using a convergent parallel mixed methods analysis, this dissertation revisits several questions from the original CSU survey to assess the effectiveness of Ethnic Studies units in the CSU. Respondents to the survey included 13 of the 58 recognized department chairs and program directors for Ethnic Studies units among the 23 campuses of the CSU system, and interview participants included 5 …

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Relationship Of A Business Simulation Course To Act Applied Math Outcomes, Brenda Lorraine Savage Jul 2025

Relationship Of A Business Simulation Course To Act Applied Math Outcomes, Brenda Lorraine Savage

Walden Dissertations and Doctoral Studies

Little evidence links the use of business simulations to advances in the higher order thinking skills that high school students need to prepare for careers in finance. The problem for this study was that students in three southern high schools had limited success on the ACT Applied Math Assessment, and there was a need to explore the relationship of a newly implemented stock market trading simulation course to student success on the assessment. Kolb’s experiential learning theory, which was aligned to the simulation activities, guided the study. The purpose of this quantitative predictive study was to determine whether participation in …

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Attitudes Toward Seeking Mental Health Services Among Young African American Same-Sex-Oriented Men, Anthony Earl Fox Jul 2025

Attitudes Toward Seeking Mental Health Services Among Young African American Same-Sex-Oriented Men, Anthony Earl Fox

Walden Dissertations and Doctoral Studies

In 2018 suicide was the second leading cause of death for young people between the ages of 15 and 24 (CDC, 2018). Suicide and other factors like HIV, depression, and oppression may serve as barriers to seeking counseling among African American same-sex-oriented men ages 18-26. Due to a previous gap in the literature regarding barriers to seeking counseling, this study may support counselors in finding ways to address the disparity in counseling utilization among this population. Grounded in queer and social identity theories, the purpose of this quantitative study was to examine if adverse childhood experiences, current civic unrest, HIV, …

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Table Of Contents, The Editors Jul 2025

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.

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Trace Element Migration In Groundwater In Sandstone Aquifers In The Jurassic Coalfields: A Case Study Of The Guojiahe Coal Mine, Shi Longqing, Qu Xingyue, Cheng Hao Jul 2025

Trace Element Migration In Groundwater In Sandstone Aquifers In The Jurassic Coalfields: A Case Study Of The Guojiahe Coal Mine, Shi Longqing, Qu Xingyue, Cheng Hao

Coal Geology & Exploration

Background The Ordos Basin, a vital energy hub in China, contains considerable coal reserves. However, the environmental issues arising from coal mining warrant attention, especially given the fragile ecosystems of the Jurassic coalfields. Methods This study investigated the Guojiahe Coal Mine in Shaanxi Province. Based on measured concentrations of 31 trace elements dissolved in sandstone aquifers across varying geological ages, this study conducted a comparative analysis of the evolutionary characteristics of these trace elements between unmined reducing and post-mining oxidizing conditions using numerical simulations. Accordingly, it revealed the impacts of coal seam mining on trace element migration in groundwater in …

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Seismic Anisotropy Of Sandstone Aquifers In Coal Seam Roofs, Yu Hang, Chen Tongjun Jul 2025

Seismic Anisotropy Of Sandstone Aquifers In Coal Seam Roofs, Yu Hang, Chen Tongjun

Coal Geology & Exploration

Objective The identification and assessment of sandstone aquifers in coal seam roofs play a vital role in the safe mining of mines. Investigating the rock physics and amplitude variation with incidence and azimuth (AVAz) responses of these sandstone aquifers is critical to the prevention and control of water hazards in mines. Methods By integrating rock physical models Voigt-Reuss-Hill (VRH), differential equivalent medium (DEM), Hudson, and Wood, as well as Gassmann’s anisotropic fluid substitution theory, this study proposed a rock physics modeling method for fractured sandstones of the horizontal transversely isotropic (HTI) media type (hereafter referred to as HTI sandstones). Using …

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Research On Monitoring And Early Warning Systems For Mine Water: Progress And Prospects, Yin Shangxian, Ding Yingying, Lian Huiqing, Dong Donglin, Du Tong, Yin Huichao, Zhao Peng, Zhang Yi’An, Wang Xiong Jul 2025

Research On Monitoring And Early Warning Systems For Mine Water: Progress And Prospects, Yin Shangxian, Ding Yingying, Lian Huiqing, Dong Donglin, Du Tong, Yin Huichao, Zhao Peng, Zhang Yi’An, Wang Xiong

Coal Geology & Exploration

Background Water disasters in mines are occasional accidents occurring due to the influence or triggered by mining-induced intense changes in geological bodies. The complexity, heterogeneity, and dynamics of geological bodies, coupled with the random and instantaneous nature of mining influence, lead to the uncertainty, instability, occasionality, and transience of water disasters in mines. Given that mine water monitoring and early warning serve as a prerequisite for advanced disaster prevention and control, their research and system construction hold great theoretical significance and practical value. Progress and Prospects Fighting against water disasters in mines is conducted throughout the development and utilization of …

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Experiments On The Diffusion Patterns Of Coal Gangue-Based Grout In Goaves Under Varying Rock Particle Sizes And Grout Mass Fractions, Zeng Yifan, Yuan Zilong, Li Hao, Wu Qiang, Zhao Gangyi, Zhou Anqi, Gao Xiang, Zhang Shuai, Bai Yanfei, Liang Jin, Yang Huxiong, Sheng Xinli, Yang Donghui, Zhao Yixia Jul 2025

Experiments On The Diffusion Patterns Of Coal Gangue-Based Grout In Goaves Under Varying Rock Particle Sizes And Grout Mass Fractions, Zeng Yifan, Yuan Zilong, Li Hao, Wu Qiang, Zhao Gangyi, Zhou Anqi, Gao Xiang, Zhang Shuai, Bai Yanfei, Liang Jin, Yang Huxiong, Sheng Xinli, Yang Donghui, Zhao Yixia

Coal Geology & Exploration

Objective Investigating grout diffusion patterns and predicting the grouting range hold great significance for coal gangue grouting and filling engineering in goaves. Specifically, they are significant for designing grouting hole and row spacing, guiding grouting construction, determining the grouting filling degree, and further ensuring grouting effects. Methods Using crushed rocks as the medium to be grouted and coal gangue-based grout as the grouting materials, this study conducted grouting experiments under different particle sizes of crushed rocks and varying mass fractions of grout. Accordingly, it investigated the flow patterns of gangue-based grout in goaves. Results and Discussion Under a mass fraction …

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Differential Roof Water Hazards And Comprehensive Utilization Of Mine Water In The Dongsheng Coalfield, Huang Haiyu, Ding Xiang, Liu Xi, Fan Jiangwei, Ji Zhuochen, Li Zhaoyang Jul 2025

Differential Roof Water Hazards And Comprehensive Utilization Of Mine Water In The Dongsheng Coalfield, Huang Haiyu, Ding Xiang, Liu Xi, Fan Jiangwei, Ji Zhuochen, Li Zhaoyang

Coal Geology & Exploration

Objective The Dongsheng coalfield exhibits various types of mine water hazards, complex water filling mechanisms, and high water inflow with high total dissolved solids (TDS) content in mining areas. These characteristics pose challenges to the comprehensive utilization of mine water, severely restricting the safe, green, and efficient coal mining in the coalfield. Methods This study aims to reveal the roof water filling characteristics of the Dongsheng coalfield and enhance the comprehensive utilization of mine water. Using methods including statistical analysis of drilling data, analytic hierarchy process, and hydrochemical tests, this study analyzed the strata, spatial distribution of aquifers, and the …

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An Experimental Study On Seepage Characteristics And Grouting-Induced Permeability Reduction Of Burnt Rocks, Qian Ziwei, Tan Chunzhi, Sun Qiang, Wang Hai, Zhang Gailing Jul 2025

An Experimental Study On Seepage Characteristics And Grouting-Induced Permeability Reduction Of Burnt Rocks, Qian Ziwei, Tan Chunzhi, Sun Qiang, Wang Hai, Zhang Gailing

Coal Geology & Exploration

Background Burnt rocks represent special geobodies formed by the spontaneous combustion of coal seams. Their pore and fracture systems provide preferential spaces for groundwater occurrence and migration while also posing severe water hazard threats to the safe mining of adjacent coal seams. Methods To address this engineering challenge, this study systematically analyzed the void structures within burnt rocks using three-dimensional reconstruction technology. Through laboratory seepage and grouting experiments, this study revealed the seepage patterns and grouting-induced permeability mechanisms of typical burnt rock specimens. Results and Conclusions The burnt rock specimens contained highly developed pores and fractures, with the void structures …

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Developmental Pattern Of Water Flowing Fractured Zones In The Soil-Bedrock-Type Overburden And Water-Controlled Mining Strategy Under A Super-Large Mining Height, Zhang Yujun, Hua Zhaolai, Song Yejie, Hu Haoyu, Li Jiawei Jul 2025

Developmental Pattern Of Water Flowing Fractured Zones In The Soil-Bedrock-Type Overburden And Water-Controlled Mining Strategy Under A Super-Large Mining Height, Zhang Yujun, Hua Zhaolai, Song Yejie, Hu Haoyu, Li Jiawei

Coal Geology & Exploration

Background The heights of water flowing fractured zones represent a key concern in the prevention and control of water disasters occurring in mining face roofs and water resource protection of coal mines. Varying lithologies and structures of the overburden are identified as primary factors governing the height and characteristic differences of water flowing fractured zones. Methods Against the engineering background of a mining face with 10 m super-large mining height in the Caojiatan Coal Mine of Shaanxi Province, this study investigated the differences in the mining-induced responses of the soil-bedrock-type overburden using numerical simulations of stress-seepage coupling and measured heights …

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Multi-Objective Allocation Optimization Model For Water Resources From A Coal Mine In The Inner Mongolia-Shaanxi Contiguous Area, Miao Hechao, Dong Shuning, Wang Hao, Yang Yuanyuan, Qiao Wei, Wang Xiaodong, Wang Dongqi, Fu Hongyang, Liu Yuting Jul 2025

Multi-Objective Allocation Optimization Model For Water Resources From A Coal Mine In The Inner Mongolia-Shaanxi Contiguous Area, Miao Hechao, Dong Shuning, Wang Hao, Yang Yuanyuan, Qiao Wei, Wang Xiaodong, Wang Dongqi, Fu Hongyang, Liu Yuting

Coal Geology & Exploration

Objective In China, as coal resource exploitation shifts gradually from eastern to western regions, coal bases in the western region play an increasingly notable foundational role in the basic energy supply in the national economy. However, due to its fragile ecosystems, the safe, efficient, and green coal exploitation of this region has long been challenged by the contradiction between the prevention and control of water hazards and the conservation of water resources. Therefore, advancing intelligent mine water control technology is identified as a crucial method to address the conflicts between coal mining and mine water in the western region. Additionally, …

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Regularity And Mechanisms Of Water-Sand Inrushes Within Mining-Activated Faults, Zhang Shichuan, Huang Pu, Li Yangyang, Wang Chenggong, Wu Zhenhua Jul 2025

Regularity And Mechanisms Of Water-Sand Inrushes Within Mining-Activated Faults, Zhang Shichuan, Huang Pu, Li Yangyang, Wang Chenggong, Wu Zhenhua

Coal Geology & Exploration

Background During underground coal mining, water-sand mixtures within faults may rush into mine floors. The water-sand inrushes are especially prominent under the conditions of high water-yield properties and loose filling structures in fault zones, severely threatening the safe mining of coal mines. Previous studies focus primarily on the impact of a single factor on inrushes. Hence, it is significant to systematical investigate the regularity of water-sand inrushes within faults under the combined effects of multiple factors. Methods Based on the fluid and granular mechanic theories, this study derived the instability criterion and flow formulas of water-sand mixtures. Using orthogonal experiments …

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Design And Efficiency Assessment Of A Passive Treatment System For Acid Mine Drainage, Yan Ruiwen, Zhu Jun, Zhu Junhao, Lin Gang, Zhang Wanqiu, Jia Zenghua, Wang Wenming, Xi Furui Jul 2025

Design And Efficiency Assessment Of A Passive Treatment System For Acid Mine Drainage, Yan Ruiwen, Zhu Jun, Zhu Junhao, Lin Gang, Zhang Wanqiu, Jia Zenghua, Wang Wenming, Xi Furui

Coal Geology & Exploration

Background Acid mine drainage (AMD) refers to highly acidic, heavy metal-rich effluent generated from mining activities, potentially causing severe environmental contamination. Methods Focusing on the Lujiang alum mine in Anhui Province, this study established a systematic framework for the design and assessment of an integrated passive AMD treatment system using the Phreeqc and AMDTreat software. Based on a comprehensive analysis of the on-site hydrogeochemical characteristics (pH: 2.93‒3.06, Fe: 5.98‒42.52 mg/L, and Al: 18.87‒32.14 mg/L) and physical conditions (flow rate: 50‒96 m3/h, available area: about 50 000 m2), this study proposed a hybrid passive treatment system comprising …

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Groundwater Rebound And Seepage Characteristics And Water Quality Evolution In A Sealed Mining Area In North China Type Coalfield, Yin Huiyong, Sun Dehui, Dong Fangying, Wang Fanhua, Zhang Lifeng, Wu Tao, Liu Chao, Zeng Yifan Jul 2025

Groundwater Rebound And Seepage Characteristics And Water Quality Evolution In A Sealed Mining Area In North China Type Coalfield, Yin Huiyong, Sun Dehui, Dong Fangying, Wang Fanhua, Zhang Lifeng, Wu Tao, Liu Chao, Zeng Yifan

Coal Geology & Exploration

Background The seepage field and water quality evolution associated with the groundwater rebound induced by the sealing of mining areas significantly affects the prevention and control of mine water hazards, as well as the recycling of water resources. Systematically elucidating the mechanisms underlying the seepage-hydrochemistry synergy of groundwater is recognized as a fundamental scientific issue for promoting the collaborative management and resource development of the water systems in mining areas. Methods Based on the engineering background of the sealed No.116 mining area in the Binhu Coal Mine, Zaozhuang, Shandong Province, this study investigated the groundwater rebound and seepage characteristics, along …

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Conversion Relationships And Three-Dimensional Storage And Utilization Modes Of Four Water Resources In An Open-Pit Mining Area, Chen Tianci, Xu Zhimin, Sun Yajun, Fang Jie, Wang Qiangmin, Xiong Xiaofeng, Zhu Yuhao, Lu Zihan, Wan Fei Jul 2025

Conversion Relationships And Three-Dimensional Storage And Utilization Modes Of Four Water Resources In An Open-Pit Mining Area, Chen Tianci, Xu Zhimin, Sun Yajun, Fang Jie, Wang Qiangmin, Xiong Xiaofeng, Zhu Yuhao, Lu Zihan, Wan Fei

Coal Geology & Exploration

Background Open-pit coal mines in China are primarily distributed in arid and semi-arid regions such as Xinjiang and Inner Mongolia. However, the contradiction between coal mining and groundwater resource conservation is increasingly prominent in these regions. Specifically, a substantial amount of mine water inflow produced during coal mining tends to lead to the further loss of groundwater resources within the influence range of a mining area. Concurrently, the failure of efficient mine water storage intensifies the regional water shortage.Methods This study investigated a typical open-pit coal mine in eastern Inner Mongolia. Using methods such as field survey and sampling, …

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Advances In Key Technologies For The Management, Restoration, Development, And Utilization Of Coal Mining Subsidence Areas, Meng Zhuanghan, Wang Yutao, Tian Yanzhe Jul 2025

Advances In Key Technologies For The Management, Restoration, Development, And Utilization Of Coal Mining Subsidence Areas, Meng Zhuanghan, Wang Yutao, Tian Yanzhe

Coal Geology & Exploration

Background Coal mining subsidence areas, formed by the exploitation of coal resources, have emerged as severe challenges to the construction of ecological civilization and the sustainable development of the social economy in China. Their management, restoration, development, and utilization play a significant role in ecological security, food security, and energy transformation. Methods This study aims to address the unresolved and emerging issues in the management of coal mining subsidence areas. Based on the core concepts of management, restoration, development, and utilization, this study developed a dual-level zoning basis system combining theories and reality. Accordingly, coal mining subsidence areas in China …

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Impact Of Virtual Visits On Antibiotic Prescribing For Upper Respiratory Infections, Anna Mikulski, Jarrod W. Kile Rphd, Brooke Broczkowski Pharmd, Kathryn Zaffiri Mph, Eric Young Md Jul 2025

Impact Of Virtual Visits On Antibiotic Prescribing For Upper Respiratory Infections, Anna Mikulski, Jarrod W. Kile Rphd, Brooke Broczkowski Pharmd, Kathryn Zaffiri Mph, Eric Young Md

Research Scholars

No abstract provided.

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Comparing Concussion Recovery Between Men And Women Using Vision Therapy, Peter Kozloff, Francesca Andronic Md, Daniele Shollenberger Crnp, Mark Cipolle Md Jul 2025

Comparing Concussion Recovery Between Men And Women Using Vision Therapy, Peter Kozloff, Francesca Andronic Md, Daniele Shollenberger Crnp, Mark Cipolle Md

Research Scholars

No abstract provided.

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Engagement, Motivation, And Interest In K-12 Science Education, Neil T M Bailie Jul 2025

Engagement, Motivation, And Interest In K-12 Science Education, Neil T M Bailie

Masters Projects

Interest, motivation, and engagement amongst science students is declining. This decline is primarily due to a loss of interest, motivation, self-efficacy, and perceived utility value (Bathgate & Schunn, 2017; Britner, 2008; Kraft, 2017). With crucial topics such as climate change and the legitimacy of vaccines coming under scrutiny, it is vital for our society that we keep our secondary students actively engaged and motivated with the science that they are learning in the classroom (Kolenatý et al., 2024; Schlopsna & Scheersoi, 2024). The main goal of this project was to create a complete unit curriculum covering the topics of the …

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Be Mindful: Examining A Brief Mindfulness Intervention On Educator Well-Being, Oceann S. Gittens Jul 2025

Be Mindful: Examining A Brief Mindfulness Intervention On Educator Well-Being, Oceann S. Gittens

LSU Doctoral Dissertations

Teaching is currently rated as one of the topmost stressful occupations. Concerningly, chronic levels of stress can lead to poor mental and physical health, occupational burnout, and teacher attrition; all of which have a negative impact on student outcomes. Mindfulness-based interventions (MBIs) are commonly used to combat occupational stress by enhancing educator well-being. There is compelling evidence to support these types of interventions with teachers. However, the length of many MBIs may make them prohibitive for the average educator to participate in them. The literature suggests that a briefer format may be just as effective at reducing stress, but more …

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Rural Perspectives On Design: A Citizens' Institute On Rural Design National Participant Study & Multimedia Research Exhibit, Sierra Mack-Erb Jul 2025

Rural Perspectives On Design: A Citizens' Institute On Rural Design National Participant Study & Multimedia Research Exhibit, Sierra Mack-Erb

Student Research – Stevenson Center

Sierra Mack-Erb is a 2025 graduate of the Stevenson Center’s Applied Community and Economic Development Fellows Program at Illinois State University, earning their M.S. in Cultural Anthropology. This report summarizes their experience conducting capstone research during their second year professional practice with the Housing Assistance Council, a national nonprofit that supports affordable housing efforts throughout rural America, and overviews their graduate capstone research study. As a fellow at the Housing Assistance Council, Sierra spent significant time supporting the Citizens’ Institute on Rural Design, a national rural design program and the focal point of their capstone research study. CIRD is a …

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Re: Comment Letter For Bpsou Uncontrolled Surface Flow Areas Drainage C 30% Design Rawp (Dated June 23, 2025), Molly Roby Jul 2025

Re: Comment Letter For Bpsou Uncontrolled Surface Flow Areas Drainage C 30% Design Rawp (Dated June 23, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Ur-22 Site Evaluation Summary Report (Dated April 2, 2025), Molly Roby Jul 2025

Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Ur-22 Site Evaluation Summary Report (Dated April 2, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final 2025 Residential Metals Abatement Program (Rmap) Valley Sand & Gravel (Builders Firstsource) Borrow Submittal #1 (Dated June 27, 2025), Molly Roby Jul 2025

Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final 2025 Residential Metals Abatement Program (Rmap) Valley Sand & Gravel (Builders Firstsource) Borrow Submittal #1 (Dated June 27, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Insufficiently Reclaimed Sites Sampling: Bres No. 84 Site Evaluation Summary Report (Dated April 11, 2025), Molly Roby Jul 2025

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Insufficiently Reclaimed Sites Sampling: Bres No. 84 Site Evaluation Summary Report (Dated April 11, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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The Impact Of Teaching Multiple Responses On Resurgence Of Target Behavior And Persistence Of Alternative Responding., Brittany H. Loder-Lafferty, Amanda N. Zangrillo, Alexandra M. Cicero, Cynthia P. Livingston, Jessica P. Tran, Mark Connelly Jul 2025

The Impact Of Teaching Multiple Responses On Resurgence Of Target Behavior And Persistence Of Alternative Responding., Brittany H. Loder-Lafferty, Amanda N. Zangrillo, Alexandra M. Cicero, Cynthia P. Livingston, Jessica P. Tran, Mark Connelly

Manuscripts, Articles, Book Chapters and Other Papers

This study evaluated the effects of teaching multiple alternative responses on the resurgence of a target response and the persistence of an alternative response in an applied setting. Using a between-participants design, we examined how teaching multiple alternative responses impacted resurgence and persistence upon exposure to extinction. Additionally, we investigated the role of preference in response allocation and shifts in participant preference following extinction. Results indicated resurgence across both conditions, with no consistent difference in severity between single and multiple alternative response conditions. However, within-session analyses revealed greater persistence of the alternative response for participants taught multiple alternative responses, suggesting …

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Towards Scalable Taxi Demand Prediction, Yifei Shen Jul 2025

Towards Scalable Taxi Demand Prediction, Yifei Shen

Lingnan Theses (MPhil & PhD)

Accurate taxi demand prediction is essential for optimizing urban mobility systems across varying spatial-temporal resolutions and data conditions. Scalable taxi demand prediction refers to the capability of forecasting models to adapt to different granularities of spatial and temporal data while maintaining prediction accuracy, a critical requirement for practical urban applications ranging from fleet management to transportation planning. However, two fundamental challenges impede this scalability: data sparsity and multi-resolution forecasting requirements. Data sparsity, particularly pronounced in high-resolution predictions where numerous regions exhibit minimal activity, significantly compromises model performance. Concurrently, different urban applications necessitate predictions at varying temporal and spatial granularities, requiring …

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Fostering Meaningful Learning: Experiences Of Linguistically Diverse Trainers In Early Childhood Care And Education (Ecce) Professional Development, Anna Howell Jul 2025

Fostering Meaningful Learning: Experiences Of Linguistically Diverse Trainers In Early Childhood Care And Education (Ecce) Professional Development, Anna Howell

Dissertations and Theses

Linguistically diverse trainers play a critical role in reshaping professional development (PD) within Early Childhood Care and Education (ECCE), yet their contributions remain marginalized within English-dominant institutional structures. This qualitative study explored how these trainers define and deliver meaningful learning experiences despite systemic barriers, limited resources, and monolingual policies. Grounded in critical constructivism, the research centered the lived experiences and voices of linguistically diverse trainers across multiple contexts. Through semi-structured interviews, participants shared how they co-constructed relational, culturally grounded, and linguistically affirming PD environments rooted in community knowledge and emotional connection. Findings reveal that meaningful learning occurs when training reflects …

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Specialization Of Sesquiterpene Lactone Metabolites In Liriodendron Plant Defense, Shiwei Chen, Sarah Al Kinani, Oli Horyn, Colin Galliano, Era Srivastava, David C Rowley, Kathryn M Ramsey, Divita Mathur, Matthew J Bertin Jul 2025

Specialization Of Sesquiterpene Lactone Metabolites In Liriodendron Plant Defense, Shiwei Chen, Sarah Al Kinani, Oli Horyn, Colin Galliano, Era Srivastava, David C Rowley, Kathryn M Ramsey, Divita Mathur, Matthew J Bertin

Faculty, Staff and Students Publications

Tulip trees (Liriodendron tulipifera and Liriodendron chinense), members of the Magnolia family, are known for their distinctive morphology and ecological significance, but their chemical diversity remains understudied. In this study, we report the identification and characterization of an array of sesquiterpene lactones (SQLs) produced by L. tulipifera. Through comprehensive chemical analysis, including high-resolution mass spectrometry and nuclear magnetic resonance spectroscopy, we identified a series of STLs with distinct bioactivity profiles. Notably, one of these compounds exhibited antibacterial activity but was only present in L. tulipifera, being absent in L. chinense. Additionally, some STLs demonstrated significant …

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