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Articles 31 - 60 of 271
Full-Text Articles in Biology
Determining The Genetic Population Structure Of The Endangered Scirpus Ancistrochaetus Using Genomic Sequences, Kayci Johnson
Determining The Genetic Population Structure Of The Endangered Scirpus Ancistrochaetus Using Genomic Sequences, Kayci Johnson
Browse all Theses and Dissertations
Wetlands are biodiverse ecosystems across the world, and they are being lost at alarming rates due to fragmentation and anthropogenic stressors. Many wetland plants are endangered or threatened due to wetland decreasing numbers. Scirpus ancistrochaetus is an endangered wetland species in the northeastern United States. It is most commonly found in lowlands and forested ecosystems. In this study, I used 105 polymorphic loci obtained from double-digest restriction site associated DNA sequencing (ddRAD-seq), a conservation genetics tool, to determine conservation units, gene flow, kinship, and isolation-by-distance patterns. Discrete populations were identified in New England and the southern part of the species’ …
Benthic Algal Biomass And Productivity Across Depth Gradients In Lakes Michigan And Erie, Ahmed Ogidan
Benthic Algal Biomass And Productivity Across Depth Gradients In Lakes Michigan And Erie, Ahmed Ogidan
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Benthic primary production is poorly quantified in the Laurentian Great Lakes relative to phytoplankton-based production. We measured benthic chlorophyll and benthic primary productivity on soft sediments and Dreissena shells along depth gradients in Lakes Erie (2024) and Michigan (2025) during EPA Cooperative Science and Monitoring Initiative cruises. We measured benthic chlorophyll fluorometrically and estimated benthic primary productivity using non-invasive oxygen exchange incubations. We used PAM fluorometry to characterize photosynthetic-irradiance relationships on mussel shells and sediments in Lake Michigan. In Lake Erie, sediment chlorophyll ranged from 20 to 150 mg m⁻², with highest values in the central basin. In Lake Michigan, …
Enriched Microbial Consortia From Natural Environments Reveal Core Groups Of Microbial Taxa Able To Degrade Terephthalate And Terphthalamide, Laura G. Schaerer, Sulihat Aloba, Emily Wood, Allison Olson, Isabel B. A. Valencia, Rebecca Ong, Stephen Techtmann
Enriched Microbial Consortia From Natural Environments Reveal Core Groups Of Microbial Taxa Able To Degrade Terephthalate And Terphthalamide, Laura G. Schaerer, Sulihat Aloba, Emily Wood, Allison Olson, Isabel B. A. Valencia, Rebecca Ong, Stephen Techtmann
Michigan Tech Publications
Millions of tons of polyethylene terephthalate (PET) are produced each year, however only ~30% of PET is currently recycled in the United States. Improvement of PET recycling and upcycling practices is an area of ongoing research. One method for PET upcycling is chemical depolymerization (through hydrolysis or aminolysis) into aromatic monomers and subsequent biodegradation. Hydrolysis depolymerizes PET into terephthalate, while aminolysis yields terephthalamide. Aminolysis, which is catalyzed with strong bases, yields products with high osmolality, which is inhibitory to optimal microbial growth. Additionally, terephthalamide, may be antimicrobial and its biodegradability is presently unknown. In this study, microbial communities were enriched …
Mechanistic Insights Into Plant Community Responses To Environmental Variables: Genome Size, Cellular Nutrient Investments, And Metabolic Tradeoffs, Erika Hersch-Green, Philip A. Fay, Hailee B. Hass, Nicholas G. Smith
Mechanistic Insights Into Plant Community Responses To Environmental Variables: Genome Size, Cellular Nutrient Investments, And Metabolic Tradeoffs, Erika Hersch-Green, Philip A. Fay, Hailee B. Hass, Nicholas G. Smith
Michigan Tech Publications
Affecting biodiversity, plants with larger genome sizes (GS) may be restricted in nutrient-poor conditions. This pattern has been attributed to their greater cellular nitrogen (N) and phosphorus (P) investments and hypothesized nutrient–investment tradeoffs between cell synthesis and physiological attributes associated with growth. However, the influence of GS on cell size and functioning may also contribute to GS-dependent growth responses to nutrients. To test whether and how GS is associated with cellular nutrient, stomata, and/or physiological attributes, we examined > 500 forbs and grasses from seven grassland sites conducting a long-term N and P fertilization experiment. Larger GS plants had increased cellular …
Genome Size Influences Plant Growth And Biodiversity Responses To Nutrient Fertilization In Diverse Grassland Communities, Joseph A. Morton, Carlos Alberto Arnillas, Lori Biedermann, Elizabeth T. Borer, Lars A. Brudvig, Yvonne M. Buckley, Marc W. Cadotte, Kendi Davies, Ian Donohue, Anne Ebeling, Nico Eisenhauer, Catalina Estrada, Sylvia Haider, Yann Hautier, Anke Jentsch, Holly Martinson, Rebecca L. Mcculley, Xavier Raynaud, Christiane Roscher, Eric W. Seabloom, Carly J. Stevens, Katerina Vesela, Alison Wallace, Ilia J. Leitch, Andrew R. Leitch, Erika Hersch-Green
Genome Size Influences Plant Growth And Biodiversity Responses To Nutrient Fertilization In Diverse Grassland Communities, Joseph A. Morton, Carlos Alberto Arnillas, Lori Biedermann, Elizabeth T. Borer, Lars A. Brudvig, Yvonne M. Buckley, Marc W. Cadotte, Kendi Davies, Ian Donohue, Anne Ebeling, Nico Eisenhauer, Catalina Estrada, Sylvia Haider, Yann Hautier, Anke Jentsch, Holly Martinson, Rebecca L. Mcculley, Xavier Raynaud, Christiane Roscher, Eric W. Seabloom, Carly J. Stevens, Katerina Vesela, Alison Wallace, Ilia J. Leitch, Andrew R. Leitch, Erika Hersch-Green
Michigan Tech Publications
AU Experiments: Please confirm that all heading levels are represented correctly comparing diploids with polyploids and in single : grassland sites show that nitrogen and/or phosphorus availability influences plant growth and community composition dependent on genome size; specifically, plants with larger genomes grow faster under nutrient enrichments relative to those with smaller genomes. However, it is unknown if these effects are specific to particular site localities with speciifc plant assemblages, climates, and historical contingencies. To determine the generality of genome size-dependent growth responses to nitrogen and phosphorus fertilization, we combined genome size and species abundance data from 27 coordinated grassland …
Studies Of Media To Maximize The Expression Of Bacterial Metalloprotease Genes As Potential Therapeutics For Human Alzheimer’S Disease, Uday Kiran Chigurupati
Studies Of Media To Maximize The Expression Of Bacterial Metalloprotease Genes As Potential Therapeutics For Human Alzheimer’S Disease, Uday Kiran Chigurupati
Honors Capstones
This study investigates the potential of bacterial metalloprotease genes as therapeutic agents for Alzheimer's Disease (AD). The research focuses on Pseudomonas 20ei1 (P. 20ei1), a bacterial species isolated from lagoon water, which contains pitrilysin genes that share similarities with human insulysin. Six pqqL-related genes were identified in P. 20ei1 for this study. The research methodology involved bioinformatic studies, bacterial cell culture in various media, RNA extraction, purification, and cDNA synthesis. Quantitative PCR analysis was performed to analyze gene expression levels in different cDNA samples. The bacteria grown in the medium with insoluble phosphate has shown higher expression of selected genes …
The Great Lakes Winter Grab: Limnological Data From A Multi-Institutional Winter Sampling Campaign On The Laurentian Great Lakes, Ge Pu, Krill Shchapov, Nolan J.T. Pearce, Kelly Bowen, Andrew Bramburger, Andrew Camilleri, Maci Quintanilla, Trista Vick-Majors, Et Al.
The Great Lakes Winter Grab: Limnological Data From A Multi-Institutional Winter Sampling Campaign On The Laurentian Great Lakes, Ge Pu, Krill Shchapov, Nolan J.T. Pearce, Kelly Bowen, Andrew Bramburger, Andrew Camilleri, Maci Quintanilla, Trista Vick-Majors, Et Al.
Michigan Tech Publications
Interest in winter limnology is growing rapidly, but progress is hindered by a shortage of standardized multivariate datasets on winter conditions. Addressing the winter data gap will enhance our understanding of winter ecosystem function and of lake response to environmental change. Here, we describe a dataset generated by a multi-institutional winter sampling campaign across all five Laurentian Great Lakes and some of their connecting waters (the Great Lakes Winter Grab). The objective of Winter Grab was to characterize mid-winter limnological conditions in the Great Lakes using standard sample collection and analysis methods. Nineteen research groups sampled 49 locations varying widely …
Radiopaque Femnn-Mo Composite Drawn Filled Tubing Wires For Braided Absorbable Neurovascular Devices, Adam J. Griebel, Petra Maier, Henry D. Summers, Benjamin Clausius, Isabella Kanasty, Weilue He, Nicholas Peterson, Carolyn Czerniak, Alexander A. Oliver, David F. Kallmes, Ramanathan Kadirvel, Jeremy E. Schaffer, Roger J. Guillory
Radiopaque Femnn-Mo Composite Drawn Filled Tubing Wires For Braided Absorbable Neurovascular Devices, Adam J. Griebel, Petra Maier, Henry D. Summers, Benjamin Clausius, Isabella Kanasty, Weilue He, Nicholas Peterson, Carolyn Czerniak, Alexander A. Oliver, David F. Kallmes, Ramanathan Kadirvel, Jeremy E. Schaffer, Roger J. Guillory
Michigan Tech Publications
Flow diverter devices are small stents used to divert blood flow away from aneurysms in the brain, stagnating flow and inducing intra-aneurysmal thrombosis which in time will prevent aneurysm rupture. Current devices are formed from thin (∼25 μm) wires which will remain in place long after the aneurysm has been mitigated. As their continued presence could lead to secondary complications, an absorbable flow diverter which dissolves into the body after aneurysm occlusion is desirable. The absorbable metals investigated to date struggle to achieve the necessary combination of strength, elasticity, corrosion rate, fragmentation resistance, radiopacity, and biocompatibility. This work proposes and …
Microrna166: Old Players And New Insights Into Crop Agronomic Traits Improvement, Zhanhui Zhang, Tianxiao Yang, Na Li, Guiliang Tang, Jihua Tang
Microrna166: Old Players And New Insights Into Crop Agronomic Traits Improvement, Zhanhui Zhang, Tianxiao Yang, Na Li, Guiliang Tang, Jihua Tang
Michigan Tech Publications
MicroRNA (miRNA), a type of non-coding RNA, is crucial for controlling gene expression. Among the various miRNA families, miR166 stands out as a highly conserved group found in both model and crop plants. It plays a key role in regulating a wide range of developmental and environmental responses. In this review, we explore the diverse sequences of in major crops and discuss the important regulatory functions of miR166 in plant growth and stress responses. Additionally, we summarize how miR166 interacts with other miRNAs and highlight the potential for enhancing agronomic traits by manipulating the expression of miR166 and its targeted …
Single-Fly Genome Assemblies Fill Major Phylogenomic Gaps Across The Drosophilidae Tree Of Life, Bernard Y. Kim, Hannah R. Gellert, Samuel H. Church, Anton Suvorov, Sean S. Anderson, Olga Barmina, Sofia G. Beskid, Aaron A. Comeault, K. Nicole Crown, Sarah E. Diamond, Steve Dorus, Takako Fujichika, James A. Hemker, Jan Hrcek, Thomas Werner, Et. Al
Single-Fly Genome Assemblies Fill Major Phylogenomic Gaps Across The Drosophilidae Tree Of Life, Bernard Y. Kim, Hannah R. Gellert, Samuel H. Church, Anton Suvorov, Sean S. Anderson, Olga Barmina, Sofia G. Beskid, Aaron A. Comeault, K. Nicole Crown, Sarah E. Diamond, Steve Dorus, Takako Fujichika, James A. Hemker, Jan Hrcek, Thomas Werner, Et. Al
Michigan Tech Publications
AU Long-read: Pleaseconfirmthatallheadinglevelsarerepresentedcorrectly sequencing is driving rapid progress in genome assembly : across all major groups of life, including species of the family Drosophilidae, a longtime model system for genetics, genomics, and evolution. We previously developed a cost-effective hybrid Oxford Nanopore (ONT) long-read and Illumina short-read sequencing approach and used it to assemble 101 drosophilid genomes from laboratory cultures, greatly increasing the number of genome assemblies for this taxonomic group. The next major challenge is to address the laboratory culture bias in taxon sampling by sequencing genomes of species that cannot easily be reared in the lab. Here, we build …
Seagrass Ecosystem Recovery: Experimental Removal And Synthesis Of Disturbance Studies, Spencer J. Tassone, Carolyn J. Ewers Lewis, Karen J. Mcglathery, Michael L. Pace
Seagrass Ecosystem Recovery: Experimental Removal And Synthesis Of Disturbance Studies, Spencer J. Tassone, Carolyn J. Ewers Lewis, Karen J. Mcglathery, Michael L. Pace
Michigan Tech Publications
Net global losses of seagrasses have accelerated efforts to understand recovery from disturbances. Stressors causing disturbances (e.g., storms, heatwaves, boating) vary temporally and spatially within meadows potentially affecting recovery. To test differential recovery, we conducted a removal experiment at sites that differed in thermal stress for a temperate seagrass (Zostera marina). We also synthesized prior studies of seagrass recovery to assess general patterns. Seagrass shoots were removed from 28.3 m2 plots at edge and central sites of a meadow in South Bay, Virginia, USA. We hypothesized faster recovery for edge plots where greater oceanic exchange reduces thermal stress. Contrary to …
Editorial: Microorganisms In Polar Regions: Understanding Their Survival Strategies For A Sustainable Future, Trista Vick-Majors, Shiv Mohan Singh, Prashant Kumar Singh
Editorial: Microorganisms In Polar Regions: Understanding Their Survival Strategies For A Sustainable Future, Trista Vick-Majors, Shiv Mohan Singh, Prashant Kumar Singh
Michigan Tech Publications
No abstract provided.
Knockdown Of Microrna390 Enhances Maize Brace Root Growth, Juan Meng, Weiya Li, Feiyan Qi, Tianxiao Yang, Na Li, Jiong Wan, Xiaoqi Li, Yajuan Jiang, Chenhui Wang, Meilian Huang, Yuanyuan Zhang, Yongqiang Chen, Sachin Teotia, Guiliang Tang, Zhanhui Zhang, Jihua Tang
Knockdown Of Microrna390 Enhances Maize Brace Root Growth, Juan Meng, Weiya Li, Feiyan Qi, Tianxiao Yang, Na Li, Jiong Wan, Xiaoqi Li, Yajuan Jiang, Chenhui Wang, Meilian Huang, Yuanyuan Zhang, Yongqiang Chen, Sachin Teotia, Guiliang Tang, Zhanhui Zhang, Jihua Tang
Michigan Tech Publications
Brace root architecture is a critical determinant of maize's stalk anchorage and nutrition uptake, influencing root lodging resistance, stress tolerance, and plant growth. To identify the key microRNAs (miRNAs) in control of maize brace root growth, we performed small RNA sequencing using brace root samples at emergence and growth stages. We focused on the genetic modulation of brace root development in maize through manipulation of miR390 and its downstream regulated (). In the present study, miR167, miR166, miR172, and miR390 were identified to be involved in maize brace root growth in inbred line B73. Utilizing short tandem target mimic (STTM) …
Revealing Nitrate Uptake And Dispersion Dynamics Using High-Frequency Sensors And Two-Dimensional Modeling In A Large River System, Amirreza Zarnaghsh, Michelle Kelly, Amy Burgin, Admin Husic
Revealing Nitrate Uptake And Dispersion Dynamics Using High-Frequency Sensors And Two-Dimensional Modeling In A Large River System, Amirreza Zarnaghsh, Michelle Kelly, Amy Burgin, Admin Husic
Michigan Tech Publications
Nitrate pollution of water bodies is a critical issue in many parts of the world because of its negative effects on aquatic ecosystem and human health. Effective management of pollution, such as the continuous or instantaneous release from point-sources, requires an understanding – with high spatial and temporal resolution – of how nitrate is dispersed and cycled within rivers. Nitrate sensing data show promise for this purpose, but their integration into numerical models is scarce; thus, questions remain regarding the necessary spatial grid size and temporal resolution required to resolve sensor readings. In this study, we developed an unsteady two-dimensional …
Fostering Effective And Sustainable Scientific Collaboration And Knowledge Exchange: A Workshop-Based Approach To Establish A National Ecological Observatory Network (Neon) Domain-Specific User Group, Alison Donnelly, Ankur R. Desai, Katherine A. Heckman, Lucas E. Nave, Michael J. Cramer, Marie Faust, Peter Weishampel, Caleb Slemmons, Christian G. Andresen, Edward Ayres, Stacy Cotey, Kathryn M. Docherty, Joshua Hatzis, Kathryn Hofmeister, Jalene M. Lamontagne, John Lenters, Noah R. Lottig, Amy Marcarelli, Jessica Miesel, Jason Riddle, Meghan Salmon-Tumas, Mike D. Sanclements, Subash Sapkota, Mark D. Schwartz, Puja Sharma, Ojaswee Shrestha, Geoffrey Vincent, Angela Waupochick, Ting Zheng, Ye Zhiwei
Fostering Effective And Sustainable Scientific Collaboration And Knowledge Exchange: A Workshop-Based Approach To Establish A National Ecological Observatory Network (Neon) Domain-Specific User Group, Alison Donnelly, Ankur R. Desai, Katherine A. Heckman, Lucas E. Nave, Michael J. Cramer, Marie Faust, Peter Weishampel, Caleb Slemmons, Christian G. Andresen, Edward Ayres, Stacy Cotey, Kathryn M. Docherty, Joshua Hatzis, Kathryn Hofmeister, Jalene M. Lamontagne, John Lenters, Noah R. Lottig, Amy Marcarelli, Jessica Miesel, Jason Riddle, Meghan Salmon-Tumas, Mike D. Sanclements, Subash Sapkota, Mark D. Schwartz, Puja Sharma, Ojaswee Shrestha, Geoffrey Vincent, Angela Waupochick, Ting Zheng, Ye Zhiwei
Michigan Tech Publications
The decision to establish a network of researchers centers on identifying shared research goals. Ecologically specific regions, such as the USA’s National Ecological Observatory Network’s (NEON’s) eco-climatic domains, are ideal locations by which to assemble researchers with a diverse range of expertise but focused on the same set of ecological challenges. The recently established Great Lakes User Group (GLUG) is NEON’s first domain specific ensemble of researchers, whose goal is to address scientific and technical issues specific to the Great Lakes Domain 5 (D05) by using NEON data to enable advancement of ecosystem science. Here, we report on GLUG’s kick …
Roles Of Bryophytes In Forest Sustainability—Positive Or Negative?, Janice M. Glime
Roles Of Bryophytes In Forest Sustainability—Positive Or Negative?, Janice M. Glime
Michigan Tech Publications
Bryophytes were traditionally ignored in most studies of forest ecosystem processes, or they were included with litter or soil. In the last few decades we have begun to understand their many roles that permit them to be ecosystem engineers. This review serves to pull together many scattered sources into a single source on the many contributions bryophytes can perform as ecosystem engineers and to support what several authors have already stressed: that bryophytes should not be treated as a single functional group. It puts bryophytes in perspective in terms of richness and biomass, then explores their roles as ecosystem engineers; …
The Influence Of Abiotic Stress And Cultivar Variation On Plant Defenses And Resistance To Emerald Ash Borer (Agrilus Planipennis) In Cultivated Olive (Olea Spp), Idris B. Elesin
Browse all Theses and Dissertations
Emerald ash borer (EAB), Agrilus planipennis, is an invasive pest that significantly impacts olive trees (Olea europaea). This study aimed to assess the role of abiotic stress factors such as drought and salinity in influencing plant defenses and resistance to EAB, while also examining cultivar variation in resistance. The study specifically aimed to address: (1) What effects do varying degrees of abiotic stress (drought, salinity) have on olive trees' antioxidant and peroxidase activity in olive tree? (2) Do distinct olive cultivars exhibit varying levels of resistance to EAB under various stressors? We used a controlled experimental design with two stress …
Valorization Of Spent Vetiver Roots For Biochar Generation, Sameer Neve, Dibyendu Sarkar, Manas Warke, Teresa Bandosz, Rupali Datta
Valorization Of Spent Vetiver Roots For Biochar Generation, Sameer Neve, Dibyendu Sarkar, Manas Warke, Teresa Bandosz, Rupali Datta
Michigan Tech Publications
Vetiver root is widely used to produce essential oils in the aromatherapy industry. After the extraction of oil, the roots are disposed of as waste. The central objective of this research was to explore the conversion of this waste into a resource using a circular economy framework. To generate biochar, vetiver roots were pyrolyzed at different temperatures (300, 500, and 700 °C) and residence times (30, 60, and 120 min). Analysis showed the root biochar generated at 500 °C and held for 60 min had the highest surface area of 308.15 m2/g and a yield of 53.76%, in addition to …
University Biology Classrooms As Spaces For Anti-Racist Work: Instructor Motivations For Incorporating Race, Racism, And Racial Equity Content., Nicole L. Scheuermann, Candice Idlebird, Sayali Kukday, Vance J. Mccracken, Rachel E. Bradley, Heather E. Bergan-Roller
University Biology Classrooms As Spaces For Anti-Racist Work: Instructor Motivations For Incorporating Race, Racism, And Racial Equity Content., Nicole L. Scheuermann, Candice Idlebird, Sayali Kukday, Vance J. Mccracken, Rachel E. Bradley, Heather E. Bergan-Roller
Faculty Articles, Papers, and Other Scholarship
Science is often portrayed as a meritocratic endeavor, but university biology programs exhibit high rates of student attrition, particularly among students of Color, despite similar interest and aptitude for science, technology, engineering, and mathematics (STEM) as White students. Culturally relevant pedagogy is associated with student persistence in STEM. One way to practice culturally relevant pedagogy in biology courses is to engage students in discussions of race, racism, or racial equity. Guidance exists to help instructors incorporate race-related topics into the biology curriculum, but the reasoning behind the decision of whether to adopt this practice is not well characterized. Understanding instructors’ …
What A Waste: Nitrogen Runoff And Rates In The Maumee River (Ohio, Usa), Ryanne Antonette Cimatu
What A Waste: Nitrogen Runoff And Rates In The Maumee River (Ohio, Usa), Ryanne Antonette Cimatu
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Excess anthropogenic nitrogen (N), primarily from agricultural field fertilization, causes nutrient runoff that stimulates harmful algal blooms (HABs) in western Lake Erie. As a critical tributary to Lake Erie, nutrient loading from the Maumee River drives the intensity of the annual summer HABs in the western basin. Knowledge gaps around rates of N transformations in the Maumee River currently hinder the calibration of in-river parameters in Soil and Water Assessment Tool (SWAT) models for the Maumee watershed. To address these gaps, this research quantified rates of ammonium uptake, ammonium remineralization, nitrification, and bacterial respiration alongside physicochemical parameters of the river. …
Investigating Calcium Levels During Excitation-Contraction Coupling In Model Huntington's Disease Skeletal Muscle, Pooneh Hajmirza Mohammadi Kamalabadi
Investigating Calcium Levels During Excitation-Contraction Coupling In Model Huntington's Disease Skeletal Muscle, Pooneh Hajmirza Mohammadi Kamalabadi
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One of the less studied aspects of Huntington’s disease (HD) is its impact on skeletal muscle function. Recent studies have suggested that HD patients exhibit altered muscle function and reduced muscle strength, which may be related to defects in Ca2+ handling during excitation-contraction coupling (ECC). However, the underlying mechanisms of these alterations remain poorly understood. This study aims to determine if the myoplasmic Ca2+ during ECC is reduced in late-stage R6/2 (mouse model of HD) muscle fibers compared to age-matched controls during twitch or tetanic stimulation. Such a decrease would help explain weakness or fatigue in the model HD muscle. …
Investigating The Effects Of Human Astroviruses On Aquaporins And Tight Junction Proteins In Vitro, Makalia T. Robinson
Investigating The Effects Of Human Astroviruses On Aquaporins And Tight Junction Proteins In Vitro, Makalia T. Robinson
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Human Astroviruses (HAstV) are positive sense non-enveloped single stranded RNA viruses. HAstV is divided into classical (serotype 1-8) and non-classical (HAstVMLB 1-3 and HAstV-VA1-5) astroviruses. Classical HAstV is known to cause diarrhea in children, elderly, and immunocompromised patients. Additionally, the etiology of nonclassical HAstV remains unknown. However, recent studies have implicated non-classical HAstV closely associated with immunocompromised patients diagnosed neurological diseases like acute encephalitis. The mechanisms by which HAstV cause diarrhea is currently unknown. Aquaporins (AQPs) are integral membrane proteins that regulate the movement of water and small uncharged molecules across the cell membrane in response to osmotic gradients. Tight …
Lead In Paint-Contaminated Residential Soils With Varying Physicochemical Properties From Three Large Us Cities: Assessment Of Geochemical Forms And Recommendations On Amendments For Immobilization, Hadeer Saleh, Dibyendu Sarkar, Washington Braida, Steve Larson, Rupali Datta
Lead In Paint-Contaminated Residential Soils With Varying Physicochemical Properties From Three Large Us Cities: Assessment Of Geochemical Forms And Recommendations On Amendments For Immobilization, Hadeer Saleh, Dibyendu Sarkar, Washington Braida, Steve Larson, Rupali Datta
Michigan Tech Publications
Lead in yard soils has been recognized as the principal source of excess lead absorption among young children. The hazard imposed by soil lead is dependent on the geochemical forms of lead in soils. Soil properties such as pH, soil organic matter, clay, and carbonate content influence the geochemical forms of lead in soil. This study was conducted to investigate the correlation between soil properties and the geochemical speciation of lead in lead paint-contaminated residential soils from three major US cities. A comprehensive field survey was conducted, involving the collection of soils from ten houses in each of the cities: …
Monitoring Time Domain Characteristics Of Parkinson's Disease Using 3d Memristive Neuromorphic System, Md Abu Bakr Siddique, Yan Zhang, Hongyu An
Monitoring Time Domain Characteristics Of Parkinson's Disease Using 3d Memristive Neuromorphic System, Md Abu Bakr Siddique, Yan Zhang, Hongyu An
Michigan Tech Publications
INTRODUCTION: Parkinson's disease (PD) is a neurodegenerative disorder affecting millions of patients. Closed-Loop Deep Brain Stimulation (CL-DBS) is a therapy that can alleviate the symptoms of PD. The CL-DBS system consists of an electrode sending electrical stimulation signals to a specific region of the brain and a battery-powered stimulator implanted in the chest. The electrical stimuli in CL-DBS systems need to be adjusted in real-time in accordance with the state of PD symptoms. Therefore, fast and precise monitoring of PD symptoms is a critical function for CL-DBS systems. However, the current CL-DBS techniques suffer from high computational demands for real-time …
Coexistence Of Specialist And Generalist Species Within Mixed Plastic Derivative-Utilizing Microbial Communities, Laura G. Schaerer, Lindsay I. Putman, Isaac Bigcraft, Emma Byrne, Daniel G. Kulas, Ali Zolghadr, Sulihat Aloba, Rebecca Ong, David Shonnard, Stephen Techtmann
Coexistence Of Specialist And Generalist Species Within Mixed Plastic Derivative-Utilizing Microbial Communities, Laura G. Schaerer, Lindsay I. Putman, Isaac Bigcraft, Emma Byrne, Daniel G. Kulas, Ali Zolghadr, Sulihat Aloba, Rebecca Ong, David Shonnard, Stephen Techtmann
Michigan Tech Publications
BACKGROUND Plastic-degrading microbial isolates offer great potential to degrade, transform, and upcycle plastic waste. Tandem chemical and biological processing of plastic wastes has been shown to substantially increase the rates of plastic degradation however, the focus of this work has been almost entirely on microbial isolates (either bioengineered or naturally occurring). We propose that a microbial community has even greater potential for plastic upcycling. A microbial community has greater metabolic diversity to process mixed plastic waste streams and has built-in functional redundancy for optimal resilience. RESULTS Here, we used two plastic-derivative degrading communities as a model system to investigate the …
Quantification Of Amu River Riverbank Erosion In Balkh Province Of Afghanistan During 2004–2020, Abdul Basir Mahmoodzada, Divyesh Varade, Sawahiko Shimada, Hiromu Okazawa, Shafiqullah Aryan, Gulbuddin Gulab, Abd El Zaher M.A. Mustafa, Humaira Rizwana, Yogesh Ahlawat, Hosam O. Elansary
Quantification Of Amu River Riverbank Erosion In Balkh Province Of Afghanistan During 2004–2020, Abdul Basir Mahmoodzada, Divyesh Varade, Sawahiko Shimada, Hiromu Okazawa, Shafiqullah Aryan, Gulbuddin Gulab, Abd El Zaher M.A. Mustafa, Humaira Rizwana, Yogesh Ahlawat, Hosam O. Elansary
Michigan Tech Publications
In this study, we propose quantifying the Amu River riverbank erosion with the modelled river discharge in Kaldar District, Balkh Province of Afghanistan from 2004 to 2020. We propose a framework synergizing multi-source information for modelling the erosion area based on three components: (1) river discharge, (2) river width, and (3) erosion area. The total river discharge for the watershed shared by Afghanistan and Tajikistan was modelled using hydrological parameters from the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis v5 (ERA5) data through multivariate linear regression with ground station data. The river width was determined manually using the Normalized …
A High-Efficiency Gene Silencing In Plants Using Two-Hit Asymmetrical Artificial Micrornas, Sachin Teotia, Xiaoran Wang, Na Zhou, Mengmeng Wang, Haiping Liu, Jun Qin, Dianwei Han, Chingwen Li, Christine E. Li, Shangjin Pan, Haifeng Tang, Wenjun Kang, Zhanhui Zhang, Xiaoqing Tang, Ting Peng, Guiliang Tang
A High-Efficiency Gene Silencing In Plants Using Two-Hit Asymmetrical Artificial Micrornas, Sachin Teotia, Xiaoran Wang, Na Zhou, Mengmeng Wang, Haiping Liu, Jun Qin, Dianwei Han, Chingwen Li, Christine E. Li, Shangjin Pan, Haifeng Tang, Wenjun Kang, Zhanhui Zhang, Xiaoqing Tang, Ting Peng, Guiliang Tang
Michigan Tech Publications, Part 1
MicroRNAs (miRNAs) are small non-coding RNA molecules that play a crucial role in gene regulation. They are produced through an enzyme-guided process called dicing and have an asymmetrical structure with two nucleotide overhangs at the 3' ends. Artificial microRNAs (amiRNAs or amiRs) are designed to mimic the structure of miRNAs and can be used to silence specific genes of interest. Traditionally, amiRNAs are designed based on an endogenous miRNA precursor with certain mismatches at specific positions to increase their efficiency. In this study, the authors modified the highly expressed miR168a in Arabidopsis thaliana by replacing the single miR168 stem-loop / …
Coastal Environments: Mine Discharges And Infringements On Indigenous Peoples’ Rights, Charles Kerfoot, Gary Swain, Luis M. Verissimo, Erin Johnston, Carol Maclennan, Daniel Schneider, Noel Urban
Coastal Environments: Mine Discharges And Infringements On Indigenous Peoples’ Rights, Charles Kerfoot, Gary Swain, Luis M. Verissimo, Erin Johnston, Carol Maclennan, Daniel Schneider, Noel Urban
Michigan Tech Publications
Over a century ago, copper mills on the Keweenaw Peninsula of Lake Superior sluiced 64 million metric tonnes (MMT) of tailings into coastal waters, creating a metal-rich “halo”. Here we show that relatively small discharges can spread widely in time and space. Mass Mill (2.9 MMT) dumping into Lake Superior also illustrates the complexity of interactions with Indigenous Peoples. A combination of aerial photos, LiDAR, and a microscope technique for distinguishing end-member particles traces the migration of tailings. The clay fraction spread rapidly across Keweenaw Bay and curled into terminal L’Anse Bay, within tribal Reservation boundaries. The coarse stamp sand …
Putrescine Mitigates High Temperature Effects By Modulating Morpho-Physiological And Biochemical Attributes In Brassica Juncea Seedlings, Parul Sharma, Nita Lakra, Yogesh Ahlawat, Abbu Zaid, Ahmed M. Abd-Elgawad, Hosam O. Elansary, Anita Gupta
Putrescine Mitigates High Temperature Effects By Modulating Morpho-Physiological And Biochemical Attributes In Brassica Juncea Seedlings, Parul Sharma, Nita Lakra, Yogesh Ahlawat, Abbu Zaid, Ahmed M. Abd-Elgawad, Hosam O. Elansary, Anita Gupta
Michigan Tech Publications
A variety of environmental issues are affecting crops all across the world, but rising temperatures are posing the greatest threat. High temperature has been found to drastically inhibit seedling emergence and cause leaf necrosis at the seedling stage, which results in poor plant stand and significantly decreased yields. Polyamines (PAs) are positively charged, low-molecular-weight aliphatic nitrogenous bases present in all living organisms and are involved in various biological processes in plant growth and development, including senescence and response to different abiotic stresses. Putrescine (Put) functions as a master growth regulator that promotes optimal plant development and greater stress tolerance. Here, …
Impacts Of Microrna-483 On Human Diseases, Katy Matson, Aaron B. Macleod, Nirali Mehta, Ellie Sempek, Xiaoqing Tang
Impacts Of Microrna-483 On Human Diseases, Katy Matson, Aaron B. Macleod, Nirali Mehta, Ellie Sempek, Xiaoqing Tang
Michigan Tech Publications, Part 1
MicroRNAs (miRNAs) are short non-coding RNA molecules that regulate gene expression by targeting specific messenger RNAs (mRNAs) in distinct cell types. This review provides a com-prehensive overview of the current understanding regarding the involvement of miR-483-5p and miR-483-3p in various physiological and pathological processes. Downregulation of miR-483-5p has been linked to numerous diseases, including type 2 diabetes, fatty liver disease, diabetic nephropathy, and neurological injury. Accumulating evidence indicates that miR-483-5p plays a crucial protective role in preserving cell function and viability by targeting specific transcripts. Notably, elevated levels of miR-483-5p in the bloodstream strongly correlate with metabolic risk factors and …