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Articles 2401 - 2430 of 32163
Full-Text Articles in Entire DC Network
Florida Historical Quarterly, Volume 93, Number 4, Florida Historical Society
Florida Historical Quarterly, Volume 93, Number 4, Florida Historical Society
Florida Historical Quarterly
Between Swamp and Sea: Bahamian Visitors in Southeast Florida before Miami by Devin Leigh
By the Shores of the Phosphorescent Seas: Lafcadio Hearn's Journey to Florida's Mysterious Fountain by Maxwell J. Stillwell
Camp Blanding Station Hospital in the War Years by George E. Cressman Jr.
Swaim Family Papers: Civil War Reports and Letters of Recommendation for a Carpetbagger by John T. Foster Jr., and Nicole Brown
Book Reviews
End Notes
Florida History in Publications, 2014
Comprehensive Index: 2014-2015 (volume 93)
Florida Historical Quarterly, Volume 87, Number 4, Florida Historical Society
Florida Historical Quarterly, Volume 87, Number 4, Florida Historical Society
Florida Historical Quarterly
Florida and the Environment: From La Florida" to Global Warming 2008 Jillian Prescott Memorial Lecture Duane E. De Freese
Sharp Prose for Green: John D. MacDonald and the Fit Ecological Novel Jack E. Davis
Gatorland: Survival of the Fittest among Florida's Mid-Tier Tourist Attractions Dorothy Mays Baseball in Key West and Havana, 1885-1910: The Career of Francisco A. Poyo Gerald E. Poyo
Book Reviews
End Notes
Florida History in Publication
Cumulative Index, Volume 87
Florida Historical Quarterly, Volume 85, Number 4, Florida Historical Society
Florida Historical Quarterly, Volume 85, Number 4, Florida Historical Society
Florida Historical Quarterly
A Plague in Paradise: Public Health and Public Relations During the 1962 Encephalitis Epidemic in St. Petersburg, Florida Eric Jarvis
A Women's Page Pioneer: Marie Anderson and Her Influence at the Miami Herald and Beyond Kimberly Wilmot Voss and Lance Speere
Progress and Sacrifice: Tampa Shipyard Workers in World War II Stacy Lynn Tanner
Book Reviews
End Notes
Index
Florida Historical Quarterly, Volume 83, Number 4, Florida Historical Society
Florida Historical Quarterly, Volume 83, Number 4, Florida Historical Society
Florida Historical Quarterly
Hurricanes and the Shaping of Circum-Caribbean Societies Stuart B. Schwartz
"A Veritable Refuge for Practicing Homosexuals": The Johns Committee and the University of South Florida Dan Bertwell
The Florida Room: Religion & Romance: A Florida Memoir Ron McFarland
Historic Notes and Documents: Harriet Ward Foote Hawley: Civil War Journalist Sarah Whitrner Foster and John T. Foster, Jr.
Book Reviews
Book Notes
History News
Volume Index
The Effectiveness Of Adobe Flash Program On The Achievement Of Sixth Graders In Technology And Their Attitudes At The Governmental Schools Of Nablus City, Soheil Salha, Amani Hamad
The Effectiveness Of Adobe Flash Program On The Achievement Of Sixth Graders In Technology And Their Attitudes At The Governmental Schools Of Nablus City, Soheil Salha, Amani Hamad
An-Najah University Journal for Research - B (Humanities)
This study aimed at investigating the effectiveness of employing a computerized educational program, which according to Adobe Flash Professional CS5.5, in measuring the achievement of the sixth graders in the subject of “Technology” in the governmental schools in Nablus and their attitudes towards it. In order to answer the questions of the study and test its hypotheses, the researcher employed the Qusai- experimental Design. In other words, the researcher used two tools, namely: an immediate achievement test and the measurement of the attitudes towards learning the subject of ‘technology’. The population of the study comprised (92) female students from the …
Biomechanical Analysis Of Stairs Ascent By Using Two Different Methods, Khaled Atiyat, Osama Abdul Fattah, Suha Simreen
Biomechanical Analysis Of Stairs Ascent By Using Two Different Methods, Khaled Atiyat, Osama Abdul Fattah, Suha Simreen
An-Najah University Journal for Research - B (Humanities)
This study aimed at identifyingthe values of some biomechanical variables to stair ascent in two different ways, as well to explore the best style stairsascent.The study sample consisted of (n=4)healthystudents in the Faculty of Physical Education at TheUniversity of Jordan.Individuals(average age 24 years, and the averageofheight 185 cm, and the averageofmass 89.5 kg).The study examined the anglesof flexion joints(hip,knee, and ankle) atthe moment of contact flattened, as well maximum height of the front feet, and the distance of the foot is based on stair, and the workdone and power in the two methods.The researchersutilized two different techniquesin stairsascent(step over step, …
The Effectiveness Of A Counseling Program For Reducing Nightmares And Improving Sleep Quality Among Gaza Children With Destroyed Houses In 2014 War, Etaf Abu Ghali, Joltan Hijazi
The Effectiveness Of A Counseling Program For Reducing Nightmares And Improving Sleep Quality Among Gaza Children With Destroyed Houses In 2014 War, Etaf Abu Ghali, Joltan Hijazi
An-Najah University Journal for Research - B (Humanities)
The study aimed at investigating the effectiveness of a counseling program for reducing nightmares and improving sleep quality among
The Effectiveness Of Teaching Science For Intermediate Stage Students Using Marzano's Dimensions Of Learning Model In Developing Their Conceptual Structure And The Scientific Attitudes, Hameed Osaimi
An-Najah University Journal for Research - B (Humanities)
Thestudy aimed to explorethe effectiveness of using Marzano's Dimensions of Learning Model among Intermediate Stage Students in developingtheir conceptual structure and the scientific attitudes. The sample of the study consisted of (44) students of the 1stintermediate grade in TaifDirectorate ofEducation.This sample was distributed randomly intoan experimental group and a control group.Pre and post –tests were administered to the two study groups.andthe gathered data were analyzed using ANOVA.The results showed that: a statisticalsignificant difference at (α=0,05) between the mean scores on the Conceptual Structuretest attributed to the instructional method in favor of the experimental group and there was a statistically significant …
Asthma And Its Relationship To Mitochondrial Copy Number: Results From The Asthma Translational Genomics Collaborative (Atgc) Of The Trans-Omics For Precision Medicine (Topmed) Program, Maxwell P. Cocco, Evan White, Shujie Xiao, Donglei Hu, Angel Mak, Patrick Sleiman, Mao Yang, Kevin R. Bobbit, Hongsheng Gui, Albert M. Levin, Samantha Hochstadt, Kyle Whitehouse, Dean Rynkowski, Andrea J. Barczak, Gonçalo Abecasis, Thomas W. Blackwell, Hyun Min Kang, Deborah A. Nickerson, Soren Germer, Jun Ding, David E. Lanfear, Frank Gilliland, W. James Gauderman, Rajesh Kumar, David J. Erle, Fernando Martinez, Hakon Hakonarson, Esteban G. Burchard, Keoki L. Williams
Asthma And Its Relationship To Mitochondrial Copy Number: Results From The Asthma Translational Genomics Collaborative (Atgc) Of The Trans-Omics For Precision Medicine (Topmed) Program, Maxwell P. Cocco, Evan White, Shujie Xiao, Donglei Hu, Angel Mak, Patrick Sleiman, Mao Yang, Kevin R. Bobbit, Hongsheng Gui, Albert M. Levin, Samantha Hochstadt, Kyle Whitehouse, Dean Rynkowski, Andrea J. Barczak, Gonçalo Abecasis, Thomas W. Blackwell, Hyun Min Kang, Deborah A. Nickerson, Soren Germer, Jun Ding, David E. Lanfear, Frank Gilliland, W. James Gauderman, Rajesh Kumar, David J. Erle, Fernando Martinez, Hakon Hakonarson, Esteban G. Burchard, Keoki L. Williams
Center for Individualized and Genomic Medicine Research Articles
BACKGROUND: Mitochondria support critical cellular functions, such as energy production through oxidative phosphorylation, regulation of reactive oxygen species, apoptosis, and calcium homeostasis.
OBJECTIVE: Given the heightened level of cellular activity in patients with asthma, we sought to determine whether mitochondrial DNA (mtDNA) copy number measured in peripheral blood differed between individuals with and without asthma.
METHODS: Whole genome sequence data was generated as part of the Trans-Omics for Precision Medicine (TOPMed) Program on participants from the Study of Asthma Phenotypes and Pharmacogenomic Interactions by Race-ethnicity (SAPPHIRE) and the Study of African Americans, Asthma, Genes, & Environment II (SAGE II). We …
Global Phylogeography Suggests Extensive Eucosmopolitanism In Mesopelagic Fishes (Maurolicus: Sternoptychidae), D. J. Reese, Jan Y. Poulsen, Tracey Sutton, Paulo A. S. Cost, Mauricio F. Landaeta
Global Phylogeography Suggests Extensive Eucosmopolitanism In Mesopelagic Fishes (Maurolicus: Sternoptychidae), D. J. Reese, Jan Y. Poulsen, Tracey Sutton, Paulo A. S. Cost, Mauricio F. Landaeta
Marine & Environmental Sciences Faculty Articles
Fishes in the mesopelagic zone (200–1000 m) have recently been highlighted for potential exploitation. Here we assess global phylogeography in Maurolicus, the Pearlsides, an ecologically important group. We obtained new sequences from mitochondrial COI and nuclear ITS-2 from multiple locations worldwide, representing 10 described species plus an unknown central South Pacific taxon. Phylogenetic analyses identified five geographically distinct groupings, three of which comprise multiple described species. Species delimitation analyses suggest these may represent four species. Maurolicus muelleri and M. australis are potentially a single species, although as no shared haplotypes are found between the two disjunct groups, we suggest …
A Review Of Volatile Organic Compound Contamination In Post-Industrial Urban Centers: Reproductive Health Implications Using A Detroit Lens, Carol J. Miller, Melissa Runge-Morris, Andrea E. Cassidy-Bushrow, Jennifer K. Straughen, Timothy M. Dittrich, Tracie R. Baker, Michael C. Petriello, Gil Mor, Douglas M. Ruden, Brendan F. O'Leary, Sadaf Teimoori, Chandra M. Tummala, Samantha Heldman, Manisha Agarwal, Katherine Roth, Zhao Yang, Bridget B. Baker
A Review Of Volatile Organic Compound Contamination In Post-Industrial Urban Centers: Reproductive Health Implications Using A Detroit Lens, Carol J. Miller, Melissa Runge-Morris, Andrea E. Cassidy-Bushrow, Jennifer K. Straughen, Timothy M. Dittrich, Tracie R. Baker, Michael C. Petriello, Gil Mor, Douglas M. Ruden, Brendan F. O'Leary, Sadaf Teimoori, Chandra M. Tummala, Samantha Heldman, Manisha Agarwal, Katherine Roth, Zhao Yang, Bridget B. Baker
Public Health Sciences Articles
Volatile organic compounds (VOCs) are a group of aromatic or chlorinated organic chemicals commonly found in manufactured products that have high vapor pressure, and thus vaporize readily at room temperature. While airshed VOCs are well studied and have provided insights into public health issues, we suggest that belowground VOCs and the related vapor intrusion process could be equally or even more relevant to public health. The persistence, movement, remediation, and human health implications of subsurface VOCs in urban landscapes remain relatively understudied despite evidence of widespread contamination. This review explores the state of the science of subsurface movement and remediation …
A Genomic Signature For Accurate Classification And Prediction Of Clinical Outcomes In Cancer Patients Treated With Immune Checkpoint Blockade Immunotherapy, Mei Lu, Kuan-Han Wu, Sheri Trudeau, Margaret Jiang, Joe Zhao, Elliott Fan
A Genomic Signature For Accurate Classification And Prediction Of Clinical Outcomes In Cancer Patients Treated With Immune Checkpoint Blockade Immunotherapy, Mei Lu, Kuan-Han Wu, Sheri Trudeau, Margaret Jiang, Joe Zhao, Elliott Fan
Public Health Sciences Articles
Tumor mutational burden (TMB) is associated with clinical response to immunotherapy, but application has been limited to a subset of cancer patients. We hypothesized that advanced machine-learning and proper modeling could identify mutations that classify patients most likely to derive clinical benefits. Training data: Two sets of public whole-exome sequencing (WES) data for metastatic melanoma. Validation data: One set of public non-small cell lung cancer (NSCLC) data. Least Absolute Shrinkage and Selection Operator (LASSO) machine-learning and proper modeling were used to identify a set of mutations (biomarker) with maximum predictive accuracy (measured by AUROC). Kaplan-Meier and log-rank methods were used …
A Topological Analysis Of Gene Co-Expression Networks From Brain Data, Mary Lee
A Topological Analysis Of Gene Co-Expression Networks From Brain Data, Mary Lee
Honors Theses
Gene expression data is a compilation of gene activity expressed in a certain tissue. This data has the potential to help uncover genes associated with some disease, stimulus, and treatment. The Allen Brain Atlas has made available gene expression data describing the activity of genes in individuals and tissues related to aging, dementia, traumatic brain injury, brain cancer, and many other brain-specific conditions. This project uses statistical and information-theoretic metrics like Pearson correlation and mutual information to build gene co-expression networks, which are represented by nodes on a graph that correspond to a gene. The nodes are connected when they …
Editorial: Structure And Function Of Chloroplasts - Volume Ii, Yan Lu, Lu Ning Liu, Rebecca L. Roston, Jurgen Soll, Hongbo Gao
Editorial: Structure And Function Of Chloroplasts - Volume Ii, Yan Lu, Lu Ning Liu, Rebecca L. Roston, Jurgen Soll, Hongbo Gao
Department of Biochemistry: Faculty Publications
No abstract provided.
Fall Newsletter 2020 (Issue 9), Csusb
Fall Newsletter 2020 (Issue 9), Csusb
Coyote Chronicle (1984-)
Inside This Issue
- CSUSB introduces winter intersession
- Essential workers discuss the dangers and fears of everyday life
- Opinion: Benefits to wearing masks
- Opinion: Teaching acceptance to better the mental health of autistic youth
- Students receive more guidance about grant writing
- Restrictions of virtual learning during a pandemic
- Vox pop: What are your thoughts on the credit/ no credit option for this semester?
- Advice: Six tips and tricks for finals week
- CSUSB gamers celebrate the third annual Coyote Cross-Up
- Vox pop: What are you thankful for?
Bullseye Snakehead Fish (Channa Marulius) Neurocranium, James A. Moss, David Kerstetter
Bullseye Snakehead Fish (Channa Marulius) Neurocranium, James A. Moss, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
Neurocranium had an estimated length of 11 cm, Bullseye Snakehead (Channa marulius), invasive species collected from South Florida
Grand Challenge In Animal Nutrition, David L. Harmon
Grand Challenge In Animal Nutrition, David L. Harmon
Animal and Food Sciences Faculty Publications
No abstract provided.
Hemp Fiber – An Environmentally Friendly Fiber For Concrete Reinforcement, Brian Giltner
Hemp Fiber – An Environmentally Friendly Fiber For Concrete Reinforcement, Brian Giltner
Theses and Dissertations
The commercial use of hemp fiber in the construction industry within the United States is non-existent. This lack of use is because of State and Federal laws forbidding the growth of hemp in the United States, which has led to a lack of research. Not having an established supply chain for hemp and coupled with limited research has put the United States behind other countries in finding viable options for these renewable resources. This is a study of the performance of raw hemp fibers and processed hemp twine in a cement past mixture subjected to tensile loading. Three water/cement ratios …
Thermographic, Behavioral, And Histological Inflammatory Analysis Of A Subconcussive, Closed-Head, Blunt Impact Rodent Model, Sonja Anne Virkus
Thermographic, Behavioral, And Histological Inflammatory Analysis Of A Subconcussive, Closed-Head, Blunt Impact Rodent Model, Sonja Anne Virkus
Theses and Dissertations
Subconcussive impacts have become a growing concern particularly with respect to contact sports. It is believed that minimal head impacts can cause cerebral perturbations that initiate an immune response creating a window of vulnerability. Evidence suggests that additional head insults sustained during this window of vulnerability elicit an exaggerated inflammatory response and exacerbate cognitive deficits. Therefore, determining the lower limits of systematic perturbation resulting from low-level impacts is of critical importance in expanding our understanding of cerebral vulnerability and recovery. However, the vast majority of experimental investigations of subconcussion fail to model single impact events and instead focus on cumulative …
Effects Of Noise Exposure On The Vestibular System: A Systematic Review, Courtney Elaine Stewart, Avril Genene Holt, Richard A. Altschuler, Anthony Thomas Cacace, Courtney D. Hall, Owen D. Murnane, W. Michael King, Faith W. Akin
Effects Of Noise Exposure On The Vestibular System: A Systematic Review, Courtney Elaine Stewart, Avril Genene Holt, Richard A. Altschuler, Anthony Thomas Cacace, Courtney D. Hall, Owen D. Murnane, W. Michael King, Faith W. Akin
ETSU Faculty Works
Despite our understanding of the impact of noise-induced damage to the auditory system, much less is known about the impact of noise exposure on the vestibular system. In this article, we review the anatomical, physiological, and functional evidence for noise-induced damage to peripheral and central vestibular structures. Morphological studies in several animal models have demonstrated cellular damage throughout the peripheral vestibular system and particularly in the otolith organs; however, there is a paucity of data on the effect of noise exposure on human vestibular end organs. Physiological studies have corroborated morphological studies by demonstrating disruption across vestibular pathways with otolith-mediated …
Movements And Space-Use Of Female Greater Sage-Grouse (Centrocercus Urophasianus) During Nesting And Breeding Seasons, Drew W. Retherford
Movements And Space-Use Of Female Greater Sage-Grouse (Centrocercus Urophasianus) During Nesting And Breeding Seasons, Drew W. Retherford
Theses and Dissertations
Greater sage-grouse (Centrocercus urophasianus) are a species of conservation concern throughout their range including the state of Idaho. Little is known about the size of areas used by female sage-grouse during the breeding and nesting seasons, fidelity of females to those areas, or fidelity of female sage-grouse to specific leks or nest sites. The recent miniaturization of global positioning system (GPS) transmitting devices allows for a more thorough analysis of this behavior. We placed GPS transmitters on 234 female sage-grouse in Idaho, USA, from 2015 to 2019. We monitored 145 nest attempts, 15 of which occurred in consecutive years, from …
Expediting Rare Disease Diagnosis: A Call To Bridge The Gap Between Clinical And Functional Genomics., Samantha N. Hartin, John C. Means, Joseph Alaimo, Scott T. Younger
Expediting Rare Disease Diagnosis: A Call To Bridge The Gap Between Clinical And Functional Genomics., Samantha N. Hartin, John C. Means, Joseph Alaimo, Scott T. Younger
Manuscripts, Articles, Book Chapters and Other Papers
Approximately 400 million people throughout the world suffer from a rare disease. Although advances in whole exome and whole genome sequencing have greatly facilitated rare disease diagnosis, overall diagnostic rates remain below 50%. Furthermore, in cases where accurate diagnosis is achieved the process requires an average of 4.8 years. Reducing the time required for disease diagnosis is among the most critical needs of patients impacted by a rare disease. In this perspective we describe current challenges associated with rare disease diagnosis and discuss several cutting-edge functional genomic screening technologies that have the potential to rapidly accelerate the process of distinguishing …
A Longitudinal Descriptive Study On The Sleep Of Young Adults With Developmental Disabilities, Emily E. Grubbs
A Longitudinal Descriptive Study On The Sleep Of Young Adults With Developmental Disabilities, Emily E. Grubbs
Theses and Dissertations
Sleep is vital for optimal physical and mental health, as well as cognitive and social functioning. Young adults with developmental disabilities (DD) are at greater risk for physical and mental health disorders and experience limitations in cognitive and social functioning in ways that can prevent participation in meaningful activities associated with young adulthood. Sleep literature has reflected that persons with DD experience worse sleep than persons without DD. Suboptimal sleep could compromise functionality and thus participation in young adulthood activities. Not much is known however of the nature of sleep problems experienced by young adults with DD. This study is …
Development Of The Pet-Related Events And Tasks Scale (Pets), Courtney Bolstad
Development Of The Pet-Related Events And Tasks Scale (Pets), Courtney Bolstad
Theses and Dissertations
Depression is a common, debilitating disorder that is often treated using behavioral activation (BA), which includes identification and scheduling of pleasant activities. Owning a pet appears to be a viable source of pleasant activities, though current BA tools do not extensively consider these activities. The present study aimed to develop the Pet-Related Events and Tasks Scale (PETS) to determine what activities of pet ownership are pleasant and may be used in BA. Various methods were used to generate items (i.e., focus groups, surveys, and adaptation of existing event schedule items) and revise the developing PETS (i.e., cognitive interviews and expert …
Comprehensive Survey Of Butterflies At The Sam D. Hamilton Noxubee National Wildlife Refuge, Jordan Gesell
Comprehensive Survey Of Butterflies At The Sam D. Hamilton Noxubee National Wildlife Refuge, Jordan Gesell
Theses and Dissertations
In collaboration with the Sam D. Hamilton Noxubee National Wildlife Refuge, I collected detailed information on the butterflies (Lepidoptera: Papilionoidea Latreille, 1802) of the refuge. I produced a comprehensive checklist of butterflies and skippers numbering 60 species. In addition, I collected data on flight periods as well as local plant community associations. Butterfly abundance surveys were conducted to assess seasonal habitat use across six site classes. Special emphasis was placed on pine forest at various stages of management for the endangered red-cockaded woodpecker (Picoides borealis). An exploratory analysis of butterfly diversity and abundance was conducted using non-metric multidimensional scaling (NMDS). …
Cognition In Health And Disease: Two Mouse Model Studies, Heather Lynn Mahoney
Cognition In Health And Disease: Two Mouse Model Studies, Heather Lynn Mahoney
USF Tampa Graduate Theses and Dissertations
Cognitive and circadian dysfunction are common aspects of neuropsychiatric disease that are often overlooked in disease models and treatment strategies. In this work, we first evaluated the potential for cognitive enhancement in healthy adult mice by targeting a kinase involved in regulation of the molecular circadian clock. We then developed and characterized a model of neuropsychiatric disease that could present a target for rescuing circadian and cognitive deficits using this treatment.
Time-of-day effects have been noted in a wide variety of cognitive behavioral tests, and perturbation of circadian rhythms impairs hippocampus-dependent learning and memory. We first asked whether casein kinase …
Agronomic, Economic, And Ecological Response Of Corn And Soybean Production Systems To Winter Cover Cropping And Minimum Tillage Management In The Mississippi Alluvial Valley, Thomas Beauregard Badon
Agronomic, Economic, And Ecological Response Of Corn And Soybean Production Systems To Winter Cover Cropping And Minimum Tillage Management In The Mississippi Alluvial Valley, Thomas Beauregard Badon
Theses and Dissertations
Winter fallow corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] production systems are susceptible to erosion and agrochemical transport. This research determined the effects of Cover Crop Minimum Tillage (CCMT) on erosion and agrochemical transport from corn-soybean rotations at field scale, while assessing impacts to agroeconomics and irrigation in Mississippi’s Delta Region. CCMT did not affect total suspended solids (p = 0.53), total inorganic phosphorus (TIP) (p = 0.30), or total nitrogen (TN) (p = 0.25) loads, but did reduce TIP (p = 0.018), TN (p = 0.011), and nitrate-nitrite (p = 0.007) concentrations. An economic loss of …
Super-Resolution Microscopy Development For The Detection Of Nano-Structures And Confocal Study Of The Structural Damage In Gut Cell Nuclei Due To Total Body Irradiation, Mehedi Hasan
Theses and Dissertations
Optical microscopy is the oldest form of microscopy that has been visually aiding scientific research. In our research, I have reported here two such optical microscopy techniques for two different projects. In the first project, we re-developed an instrumentation of a cost-effective, high-performing, single-molecular localization super-resolution microscopy setup that breaks the diffraction limitation barrier. Then we use a stochastic image capturing technique to capture the best precision image positions of gold nanoparticles. In our second project, we apply confocal microscopy technique to image DNA molecular nanoscale structural alterations of chromatin in cell nuclei of gut tissues caused by total body …
Targeting Trimeric And Tetrameric Proanthocyanidins Of Cinnamomum Verum Bark As Bioactives For Dental Therapies, Joo-Won Nam, Rasika S. Phansalkar, David C. Lankin, James Mcalpine, Ariene A. Leme-Kraus, Ana K. Bedran-Russo, Shao-Nong Chen, Guido F. Pauli
Targeting Trimeric And Tetrameric Proanthocyanidins Of Cinnamomum Verum Bark As Bioactives For Dental Therapies, Joo-Won Nam, Rasika S. Phansalkar, David C. Lankin, James Mcalpine, Ariene A. Leme-Kraus, Ana K. Bedran-Russo, Shao-Nong Chen, Guido F. Pauli
School of Dentistry Faculty Research and Publications
The present study elucidated the structures of three A-type tri- and tetrameric proanthocyanidins (PACs) isolated from Cinnamomum verum bark to the level of absolute configuration and determined their dental bioactivity using two therapeutically relevant bioassays. After selecting a PAC oligomer fraction via a biologically diverse bioassay-guided process, in tandem with centrifugal partition chromatography, phytochemical studies led to the isolation of PAC oligomers that represent the main bioactive principles of C. verum: two A-type tetrameric PACs, epicatechin-(2β→O→7,4β→8)-epicatechin-(4β→6)-epicatechin-(2β→O→7,4β→8)-catechin (1) and parameritannin A1 (2), together with a trimer, cinnamtannin B1 (3). Structure …
Computational Chemistry Investigation Of Gas-Phase Structures, Infrared Spectroscopy, And Dissociation Pathways Of Isomeric Molecules, Widana Kaushalya
Computational Chemistry Investigation Of Gas-Phase Structures, Infrared Spectroscopy, And Dissociation Pathways Of Isomeric Molecules, Widana Kaushalya
Theses and Dissertations
While chemical isomers typically have distinct properties, differentiating between them is often an analytical challenge, especially for mass spectrometric methods. Infrared multiple photon dissociation (IRMPD) spectroscopy and ion mobility spectrometry (IMS) can be useful in analysis of such isomeric compounds; however, experimental results alone do not directly provide in-depth structural information. In this thesis, computational chemistry is first used to explain experimental results and understand the conformational preference of the gas phase ions formed from the lithiation of cis-3, cis-4 and trans-4 hydroxyproline isomers and then used in a predictive manner to evaluate IRMPD spectroscopy and IMS as potential paths …