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Articles 41281 - 41310 of 302576

Full-Text Articles in Physical Sciences and Mathematics

Increase Of Genetic Variability Of Forage Arachis By Intra And Interspecific Hybridization, J. M. F. Valls, C. M. Castro, M. A. P. Oliveira, C. C. Teixeira Oct 2021

Increase Of Genetic Variability Of Forage Arachis By Intra And Interspecific Hybridization, J. M. F. Valls, C. M. Castro, M. A. P. Oliveira, C. C. Teixeira

IGC Proceedings (1993-2023)

This study was conducted to examine the potencial to increase the genetic variability of forage Arachis species, involving crosses between accessions of same species and crosses between different species, mostly of distinct taxonomic sections. Hybrids were produced between creeping, stoloniferous accessions belonging to section Caulorrhizae, Arachis pintoi x A. pintoi and A. pintoi x A. repens. Additional crosses involved section Caulorrhizae versus representatives of Erectoides (A. hermannii and A. paraguariensis) and Procumbentes (A. appressipila, A. kretschmeri, A. lignosa and A. vallsii). In intersectional crosses, the stoloniferous accessions were used as male parents. …

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Searching For Molecular Markers For Salt Tolerance In Rhodes Grass (Chloris Gayana Kunth), E. Taleisnik, M. Salgado, M. D. Bonafede, L. E. Manghers, H. Pérez, L. García Seffino, A. Castagnaro, D. G. Díaz Oct 2021

Searching For Molecular Markers For Salt Tolerance In Rhodes Grass (Chloris Gayana Kunth), E. Taleisnik, M. Salgado, M. D. Bonafede, L. E. Manghers, H. Pérez, L. García Seffino, A. Castagnaro, D. G. Díaz

IGC Proceedings (1993-2023)

Rhodes grass (Chloris gayana Kunth), a C4 forage grass, is regarded as salttolerant and exhibits intra- and inter-cultivar variability for this trait. Plants of cv Boma were selected for salt tolerance at the seedling and adult stages, cloned and characterized by RAPD and AFLP amplification patterns. Both techniques were equally efficient for fingerprinting these clones. More bands were obtained by AFLP but the ratio of polymorphic bands and the proportion present only in tolerant clones were the same by both methods. These bands, along with those exclusive for sensitive clones could be useful as markers for assisted selection.

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Biotechnological Improvement In Timothy Breeding, S. Pulli, Y. D. Guo Oct 2021

Biotechnological Improvement In Timothy Breeding, S. Pulli, Y. D. Guo

IGC Proceedings (1993-2023)

Biotechnological improvements in timothy breeding by androgenic and somatic cell culture and molecular identification were achieved. The doubled haploid (DH) plants were obtained via anther and microspore culture. A series of factors which affect androgenic embryogenesis and green plant regeneration have been evaluated. The PG-96 induction media which sharply promote androgenic embryogenesis have been established. Over 400 DH plants of timothy were obtained. Timothy somatic callus induction was successfully established using immature inflorescences and seedling stems. Suspension cultures were initiated from friable nodule-forming callus. More than 100 regenerated green plants were obtained from somatic callus and suspension clumps. DNA-based fingerprinting …

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Evolutionary Recurrent Selection Develops Adapted Annual Ryegrass, G. M. Prine Oct 2021

Evolutionary Recurrent Selection Develops Adapted Annual Ryegrass, G. M. Prine

IGC Proceedings (1993-2023)

Seed companies find having their own annual ryegrass breeding program in the southeastern USA, unprofitable. The annual ryegrass breeding program at the University of Florida provides new annual ryegrass (Lolium multiflorum) cultivars with disease resistance and adaption. The evolutionary recurrent selection breeding uses large nurseries, roguing of diseased and unthrifty plants and selection of best plants to provide seed for the next generation. Current commercial cultivars developed are named along with some of their characteristics.

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Combatting The Effects Of Greenhouse Gas Emissions By Cattle To Decrease Global Warming, Grace Stockmal Oct 2021

Combatting The Effects Of Greenhouse Gas Emissions By Cattle To Decrease Global Warming, Grace Stockmal

D.U.Quark

Greenhouse gases (GHG), specifically methane, carbon dioxide, and nitrous oxide, contribute to eutrophication and global warming. Large amounts of these gases are released by beef and dairy farms. The misconception is how and why greenhouse gases are emitted from cows. It is hypothesized that greenhouse gas emissions from cattle can be reduced through mitigation strategies in beef and dairy production along with farmers’ contributions to their livestock’s emissions. The reduction of emissions and increase in milk production comes from increased activity and care of the cows, including medicating lesions and diseases. It is also concluded that waste management and records …

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Freshwater Composition And Connectivity Of The Connecticut River Plume During Ambient Flood Tides, Michael M. Whitney, Yan Jia, Kelly L. Cole, Daniel G. Macdonald, Kimberly D. Huguenard Oct 2021

Freshwater Composition And Connectivity Of The Connecticut River Plume During Ambient Flood Tides, Michael M. Whitney, Yan Jia, Kelly L. Cole, Daniel G. Macdonald, Kimberly D. Huguenard

Civil Engineering Faculty Scholarship

The Connecticut River plume interacts with the strong tidal currents of the ambient receiving waters in eastern Long Island Sound. The plume formed during ambient flood tides is studied as an example of tidal river plumes entering into energetic ambient tidal environments in estuaries or continental shelves. Conservative passive freshwater tracers within a high-resolution nested hydrodynamic model are applied to determine how source waters from different parts of the tidal cycle contribute to plume composition and interact with bounding plume fronts. The connection to source waters can be cut off only under low-discharge conditions, when tides reverse surface flow through …

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Diffusional Fractionation Of Helium Isotopes In Silicate Melts, Haiyang Luo, Bijaya Karki, Dipta B. Ghosh, Huiming Bao Oct 2021

Diffusional Fractionation Of Helium Isotopes In Silicate Melts, Haiyang Luo, Bijaya Karki, Dipta B. Ghosh, Huiming Bao

Faculty Publications

Estimating Helium (He) concentration and isotope composition of the mantle requires quantifying He loss during magma degassing. The knowledge of diffusional He isotope fractionation in silicate melts may be essential to constrain the He loss. Isotopic mass dependence of He diffusion can be empirically expressed as D3He/D4He = (4/3)^β, where D is the diffusivity of a He isotope. However, no studies have reported any β values for He in silicate melts due to technical challenges in both experiments and computations. Here, molecular dynamics simulations based on deep neural network potentials trained by ab initio data …

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A Roadmap For Building Data Science Capacity For Health Discovery And Innovation In Africa, Joseph Beyene, Solomon W. Harrar, Mekibib Altaye, Tessema Astatkie, Tadesse Awoke, Ziv Shkedy, Tesfaye B. Mersha Oct 2021

A Roadmap For Building Data Science Capacity For Health Discovery And Innovation In Africa, Joseph Beyene, Solomon W. Harrar, Mekibib Altaye, Tessema Astatkie, Tadesse Awoke, Ziv Shkedy, Tesfaye B. Mersha

Statistics Faculty Publications

Technological advances now make it possible to generate diverse, complex and varying sizes of data in a wide range of applications from business to engineering to medicine. In the health sciences, in particular, data are being produced at an unprecedented rate across the full spectrum of scientific inquiry spanning basic biology, clinical medicine, public health and health care systems. Leveraging these data can accelerate scientific advances, health discovery and innovations. However, data are just the raw material required to generate new knowledge, not knowledge on its own, as a pile of bricks would not be mistaken for a building. In …

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Mgrre_Pureoilscouttickets_Garnett_1_21127017920000, Mgrre Oct 2021

Mgrre_Pureoilscouttickets_Garnett_1_21127017920000, Mgrre

Legacy Scout Tickets from Pure Oil Company

No abstract provided.

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Chitosan Graphene Composite Fabrication And Characterization For Treatment Of Harmful Algal Blooms And Toxins, Sarah Zetterholm Oct 2021

Chitosan Graphene Composite Fabrication And Characterization For Treatment Of Harmful Algal Blooms And Toxins, Sarah Zetterholm

Master's Theses

Chitosan graphene composites were fabricated and characterized as a management strategy for harmful algal blooms (HABs) caused by various species of cyanobacteria. These chitosan graphene materials were compared to previously studied chitosan graphene-oxide composites in both material properties and HAB treatment. In previous studies, adsorption of the cyanobacteria onto the surface of the composite materials has been observed. Investigations of the pure materials for these composites are also included in this study to determine whether removal is a result of charge interactions with the composite, or as an inherent property of the graphene or graphene oxide. Initial results suggest that …

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Evolving To Non-Round Weingarten Spheres: Integer Linear Hopf Flows, Brendan Guilfoyle, Wilhelm Klingenberg Oct 2021

Evolving To Non-Round Weingarten Spheres: Integer Linear Hopf Flows, Brendan Guilfoyle, Wilhelm Klingenberg

Publications

In the 1950’s Hopf gave examples of non-round convex 2-spheres in Euclidean 3-space with rotational symmetry that satisfy a linear relationship between their principal curvatures. In this paper, we investigate conditions under which evolving a smooth convex rotationally symmetric sphere by a linear combination of its radii of curvature yields a Hopf sphere. When the coefficients of the flow have certain integer values, the fate of an initial sphere is entirely determined by the local geometry of its isolated umbilic points. A variety of behaviours is uncovered: convergence to round spheres and non-round Hopf spheres, as well as divergence to …

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Leveraging The Popularity Of Virtual Conferencing Due To The Covid-19 Pandemic To Create New Opportunities For Stem Education, Andrew Singh, Nazrul I. Khandaker, Violeta Escandon Correa, Omadevi Singh, Ariel Skobelsky, Farhan Tanvir, Brian Sukhnandan, Matthew Khargie, Elton Selby, Masud Ahmed Oct 2021

Leveraging The Popularity Of Virtual Conferencing Due To The Covid-19 Pandemic To Create New Opportunities For Stem Education, Andrew Singh, Nazrul I. Khandaker, Violeta Escandon Correa, Omadevi Singh, Ariel Skobelsky, Farhan Tanvir, Brian Sukhnandan, Matthew Khargie, Elton Selby, Masud Ahmed

Publications and Research

Due to the COVID-19 pandemic, virtual learning has become a necessity for K9-16 education. Virtual classwork has been administered through platforms such as Google Classroom, Clever, and iReady. During the summer of 2021, the City University of New York (C.U.N.Y) York College campus hosted its NASA MAA MUREP (Minority University Research and Education Project Aerospace Academy) program virtually using a combination of Zoom, Google Docs, and even Canva, which some students requested as a more intuitive alternative to Microsoft PowerPoint. Students were mentored to use the scientific method to explore their interests in the STEM field, with a geoscience or …

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The Importance Of Monitoring To Assess The Impact Of Climate Change On Groundwater Resources In Bangladesh, Muhammad Qumrul Hassan, Anwar Zahid, Nazrul I. Khandaker Oct 2021

The Importance Of Monitoring To Assess The Impact Of Climate Change On Groundwater Resources In Bangladesh, Muhammad Qumrul Hassan, Anwar Zahid, Nazrul I. Khandaker

Publications and Research

Groundwater is the major source of fresh water across much of the world, but there has been very little study on the impacts of climate change on this precious and finite resource. Rising levels of greenhouse gases are likely to increase the global average surface temperature over the next 100 years, raise sea levels and reduce soil moisture. The amount of water stored in the soil is fundamentally important to agriculture and influences the rate of actual evaporation, groundwater recharge and runoff. Rising sea levels would cause the tidal saltwater wedge to intrude further upstream in rivers, with resulting changes …

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Statistical Analysis Of Groundwater Level Fluctuation Of The Urban And Peri-Urban Area Of Gazipur District, Bangladesh, Nowshin Ahsan Priyanka, Atika Rahman Akji, Anwar Zahid, Muhammad Qumrul Hassan, Jowaher Raza, Nazrul I. Khandaker Oct 2021

Statistical Analysis Of Groundwater Level Fluctuation Of The Urban And Peri-Urban Area Of Gazipur District, Bangladesh, Nowshin Ahsan Priyanka, Atika Rahman Akji, Anwar Zahid, Muhammad Qumrul Hassan, Jowaher Raza, Nazrul I. Khandaker

Publications and Research

Groundwater is the primary source for drinking, municipal, irrigation, and industrial water supply in Bangladesh. Due to unplanned urbanization and rapidly growing industries, the degradation situation has become perilous over time. Dhaka and its peri-urban regions are having drastic changes in groundwater (GW) levels. This work reviewed GW level fluctuation in the peri-urban area, which is now severely experiencing the detrimental impact of rapid urbanization and industrialization. Detail statistical investigation and Landsat image interpretation of the study area was conducted. Analysis and prediction of water level trends were conducted using variations of Mann Kendell tests. Gazipur Sadar (an upazila or …

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Particulate Oxalate-To-Sulfate Ratio As An Aqueous Processing Marker: Similarity Across Field Campaigns And Limitations, Miguel Ricardo A. Hilario, Ewan Crosbie, Paola Angela Bañaga, Grace Betito, Rachel A. Braun, Maria Obiminda L. Cambaliza, Andrea F. Corral, Melliza Templonuevo Cruz, Jackie E. Dibb, Genevieve Rose Lorenzo, Alexander B. Macdonald, Claire E. Robinson, Michael Shook, James Bernard Simpas, Connor Stahl, Edward Winstead, Luke Ziemba, Armin Sorooshian Oct 2021

Particulate Oxalate-To-Sulfate Ratio As An Aqueous Processing Marker: Similarity Across Field Campaigns And Limitations, Miguel Ricardo A. Hilario, Ewan Crosbie, Paola Angela Bañaga, Grace Betito, Rachel A. Braun, Maria Obiminda L. Cambaliza, Andrea F. Corral, Melliza Templonuevo Cruz, Jackie E. Dibb, Genevieve Rose Lorenzo, Alexander B. Macdonald, Claire E. Robinson, Michael Shook, James Bernard Simpas, Connor Stahl, Edward Winstead, Luke Ziemba, Armin Sorooshian

Physics Faculty Publications

Leveraging aerosol data from multiple airborne and surface-based field campaigns encompassing diverse environmental conditions, we calculate statistics of the oxalate-sulfate mass ratio (median: 0.0217; 95% confidence interval: 0.0154 – 0.0296; R = 0.76; N = 2948). Ground-based measurements of the oxalate-sulfate ratio fall within our 95% confidence interval, suggesting the range is robust within the mixed layer for the submicrometer particle size range. We demonstrate that dust and biomass burning emissions can separately bias this ratio towards higher values by at least one order of magnitude. In the absence of these confounding factors, the 95% confidence interval of the ratio …

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A Quasi-27-Day Oscillation Activity From The Troposphere To The Mesosphere And Lower Thermosphere At Low Latitudes, Hao Cheng, Alan Z. Liu, Kaiming Huang, Shaodong Zhang, Chunming Huang, Yun Gong Oct 2021

A Quasi-27-Day Oscillation Activity From The Troposphere To The Mesosphere And Lower Thermosphere At Low Latitudes, Hao Cheng, Alan Z. Liu, Kaiming Huang, Shaodong Zhang, Chunming Huang, Yun Gong

Publications

Using meteor radar, radiosonde observations and MERRA-2 reanalysis data from 12 August to 31 October 2006, we report a dynamical coupling from the tropical lower atmosphere to the mesosphere and lower thermosphere through a quasi-27-day intraseasonal oscillation (ISO). It is interesting that the quasi-27-day ISO is observed in the troposphere, stratopause and mesopause regions, exhibiting a three-layer structure. In the MLT, the amplitude in the zonal wind increases from about 4 ms−1 at 90 km to 15 ms−1 at 100 km, which is diferent from previous observations that ISOs occurs generally in winter with an amplitude peak at about 80–90 …

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Multi-Faceted Geoscience Research Using Open Access Resources: The Successful Participation Of K9-16 Students, Nazrul I. Khandaker, Noshin Sharmili, Omadevi Singh, Gurwinder Sahota, Sol De Leon, Matthew Khargie, Ali Zarine, Krishna Mahabir, Adacia Teemal, Mildred M. Selby Oct 2021

Multi-Faceted Geoscience Research Using Open Access Resources: The Successful Participation Of K9-16 Students, Nazrul I. Khandaker, Noshin Sharmili, Omadevi Singh, Gurwinder Sahota, Sol De Leon, Matthew Khargie, Ali Zarine, Krishna Mahabir, Adacia Teemal, Mildred M. Selby

Publications and Research

Students interested in geosciences, for the most part, missed out their traditional field- based research activities due to strict social distancing, travel restrictions and/or lacking financial support. An absence of physical laboratory opportunities forced students to choose topics deemed doable through online research. Available data from online sources on extreme weather related case studies, flooding, droughts, groundwater depletion in urban and suburban areas, coastal erosion rate, sealevel rise, landslides, earthquakes, volcanic eruptions, and atmospheric pollution became quite handy and lucrative. Readily available pertinent data sources enabled K9-16 students to conduct summer research at “stay home” situations. Selective peer mentoring was …

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Determination Of Sustainable Zones For Groundwater Abstraction From The Multi-Layered Aquifer System In The Bengal Basin, Bangladesh, Anwar Zahid, Muhammad Qumrul Hassan, Nazrul I. Khandaker Oct 2021

Determination Of Sustainable Zones For Groundwater Abstraction From The Multi-Layered Aquifer System In The Bengal Basin, Bangladesh, Anwar Zahid, Muhammad Qumrul Hassan, Nazrul I. Khandaker

Publications and Research

The use of deep groundwater (±300 m deep) is becoming an important issue in the Bengal Basin, due to both water quality problems and an acute shortage of available water in upper aquifers. In southeastern Bangladesh, multi-layered aquifer conditions exist with arsenic contamination at shallow depths, and high iron and brackish groundwater occurring mainly in the deeper layers. Many previous studies have offered explanations for the high concentrations of dissolved arsenic in groundwater - most of which proposed that the arsenic is derived from geo-genic sources and its release in groundwater is through natural processes, not the result of anthropogenic …

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Addressing The Learning Loss During The Covid-19 Pandemic Through The Adaptation Of Virtual Platforms, Nazrul I. Khandaker, Anika Nawar Mayeesha, Violeta Escandon Correa, Toralv Munro, Andrew Singh, Matthew Khargie, Ality Aghedo, Jasmin Budhan, Krishna Mahabir, Belal A. Sayeed Oct 2021

Addressing The Learning Loss During The Covid-19 Pandemic Through The Adaptation Of Virtual Platforms, Nazrul I. Khandaker, Anika Nawar Mayeesha, Violeta Escandon Correa, Toralv Munro, Andrew Singh, Matthew Khargie, Ality Aghedo, Jasmin Budhan, Krishna Mahabir, Belal A. Sayeed

Publications and Research

The York College-hosted NASA MAA (MUREP AEROSPACE ACADEMY) has always played a pivotal role in minimizing the learning loss during the summer months, which was heightened during the pandemic. Support from AT&T, Con Edison and NASA enabled the MAA program at York College to offer a virtual STEM education with an earth science concentration to 1000 plus underserved K1-12 students from the community last summer, including 160 high school students. Two factors made this endeavor fruitful: allowing additional time to engage in STEM lessons and increasing self-motivation to successfully accomplish assigned tasks. Students built partnerships and resolved technical issues with …

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Assessment Of The Impacts Of Urbanization On Land-Use And Land-Cover Changes Using Remote Sensing And Python At Gazipur District, Bangladesh, Atika Rahman Akji, Nowshin Ahsan Priyanka, Anwar Zahid, Muhammad Qumrul Hassan, Jowaher Raza, Nazrul I. Khandaker Oct 2021

Assessment Of The Impacts Of Urbanization On Land-Use And Land-Cover Changes Using Remote Sensing And Python At Gazipur District, Bangladesh, Atika Rahman Akji, Nowshin Ahsan Priyanka, Anwar Zahid, Muhammad Qumrul Hassan, Jowaher Raza, Nazrul I. Khandaker

Publications and Research

Urbanization has been the central demographic trend, not only in the Asia-Pacific region, but also for the entire world. Local geo-mapping is the vital tool for analyses of land-use and land-cover. This study attempts to classify land-use in unsupervised settings and create land-cover map by using open-source Landsat data integrated with GIS technologies and other ancillary resources. This work concentrates on Gazipur Sadar (an upazila or sub-district of the Gazipur District in central Bangladesh, part of the Dhaka Division) and Kaliakair, which are rapidly growing unplanned urban and industrial zones. The usage of python coding greatly assisted accomplishing the post-classification …

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Chlorophyll Concentration (Spad Values) As An Indicator Of Crude Protein Content And As A Selection Criterion In Grass Breeding, N. Gáborèík Oct 2021

Chlorophyll Concentration (Spad Values) As An Indicator Of Crude Protein Content And As A Selection Criterion In Grass Breeding, N. Gáborèík

IGC Proceedings (1993-2023)

The main aim of the study was to analyse chlorophyll a + b content (SPAD values) determined by portable chlorophyllmeter (SPAD- 502, Minolta, Japan) and crude protein content in leaves of timothy, coocksfoot, perennial ryegrass and meadow fescue (total 24 cultivars). Differences between both parameters were confirmed and a close relationship between chlorophyll content (SPAD values) and crude protein concentration was found. Correlation coefficient between SPAD and crude protein varied from 0.541++ for ryegrass to 0.906++ for timothy. This fact should be used for selection of grasses with higher crude protein content and/or better use of mineral soil …

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Evaluation Of Red Clover Populations Selected For Persistence And Dry Matter Yield In Rio Grande Do Sul, Brasil, M. Dall’Agnol, D. P. Montardo, J. K. Gonçalves Oct 2021

Evaluation Of Red Clover Populations Selected For Persistence And Dry Matter Yield In Rio Grande Do Sul, Brasil, M. Dall’Agnol, D. P. Montardo, J. K. Gonçalves

IGC Proceedings (1993-2023)

Red clover is one of the most important temperate legume species and it is used to alleviate the lack of forage in natural grasslands during the cool season in Rio Gra do Sul, Brasil. However, the lack of persistence presented by this species has not allowed its full utilization. Hence, a breeding program was started to select plants with more persistence and with good dry matter (DM) yield. This work was carried out at the “Estação Experimental Agronômica”, Universidade Federal do Rio Grande do Sul. Three selected red clover populations were evaluated in relation to the best available commercial check, …

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Genetic Variation And Genotype By Environment Interaction Of Crown Rust Resistance In Annual Ryegrass (Lolium Multiflorum Lam.), J. De Battista, A. Andrés, S. Giammaría, M. Costa Oct 2021

Genetic Variation And Genotype By Environment Interaction Of Crown Rust Resistance In Annual Ryegrass (Lolium Multiflorum Lam.), J. De Battista, A. Andrés, S. Giammaría, M. Costa

IGC Proceedings (1993-2023)

The genetic variation and genotype by environment interaction of crown rust resistance of annual ryegrass (Lolium multiflorum Lam.) was evaluated at two locations in Argentina, as part of the breeding programme in progress at our Institute. Forty half sib families originated from commercial tetraploid cultivars, were grown from seeds in a greenhouse during autumn 1999. At the stage of tillering initiation forty eight plants/familiy were randomly selected and transplanted as spaced plant trial in a randomized design with three replicates, at the two locations. All plants were scored for a range of morphological and phytopatological attributes. The severity of …

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Differences Between Diploid And Induced Tetraploid Lotus Glaber Mill. (Lotus Tenuis Waldst. & Kit.) Plants, M. S. Barufaldi, H. N. Crosta, M. F. Eseiza, R. H. Rodríguez, E. Sánchez Oct 2021

Differences Between Diploid And Induced Tetraploid Lotus Glaber Mill. (Lotus Tenuis Waldst. & Kit.) Plants, M. S. Barufaldi, H. N. Crosta, M. F. Eseiza, R. H. Rodríguez, E. Sánchez

IGC Proceedings (1993-2023)

Narrowleaf birdsfoot trefoil (Lotus glaber Mill.) is an important forage legume which has spread widely and naturalized in the grasslands of the Depressed Pampas of the Province of Buenos Aires, Argentina. L. glaber is an alogamic diploid species with a low number of chromosomes (2n=2x= 12). These features show it as a species through which induced autopolyploids by colchicine-doubling of seedlings can be obtained. In this paper, we comparatively analyze fertility and size pollen grain, stomata length, central leaflet length and width and central leaflet ratio width/length in diploid plants and induced-autotetraploid plants of L. glaber. The results …

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Mgrre_Pureoilscouttickets_Mast, Frank_1_21127017910000, Mgrre Oct 2021

Mgrre_Pureoilscouttickets_Mast, Frank_1_21127017910000, Mgrre

Legacy Scout Tickets from Pure Oil Company

No abstract provided.

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Determining Diagnosis Date Of Diabetes Using Structured Electronic Health Record (Ehr) Data: The Search For Diabetes In Youth Study, Kristin M. Lenoir, Lynne E. Wagenknecht, Jasmin Divers, Ramon Casanova, Dana Dabelea, Sharon Saydah, Catherine Pihoker, Angela D. Liese Ph.D., Debra Standiford, Richard Hamman, Brian J. Wells, The Search For Diabetes In Youth Study Group Oct 2021

Determining Diagnosis Date Of Diabetes Using Structured Electronic Health Record (Ehr) Data: The Search For Diabetes In Youth Study, Kristin M. Lenoir, Lynne E. Wagenknecht, Jasmin Divers, Ramon Casanova, Dana Dabelea, Sharon Saydah, Catherine Pihoker, Angela D. Liese Ph.D., Debra Standiford, Richard Hamman, Brian J. Wells, The Search For Diabetes In Youth Study Group

Faculty Publications

Background Disease surveillance of diabetes among youth has relied mainly upon manual chart review. However, increasingly available structured electronic health record (EHR) data have been shown to yield accurate determinations of diabetes status and type. Validated algorithms to determine date of diabetes diagnosis are lacking. The objective of this work is to validate two EHR-based algorithms to determine date of diagnosis of diabetes. Methods A rule-based ICD-10 algorithm identified youth with diabetes from structured EHR data over the period of 2009 through 2017 within three children’s hospitals that participate in the SEARCH for Diabetes in Youth Study: Cincinnati Children’s Hospital, …

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Comparison Of Design Approaches For Low-Cost Sampling Mechanisms In Open-Source Chemical Instrumentation, Greggory Murray, Samuel Bednarski, Michael Hall, Samuel W. Foster, Sijun Jin, Joshua J. Davis, Wei Xue, Eric Constans, James P. Grinias Oct 2021

Comparison Of Design Approaches For Low-Cost Sampling Mechanisms In Open-Source Chemical Instrumentation, Greggory Murray, Samuel Bednarski, Michael Hall, Samuel W. Foster, Sijun Jin, Joshua J. Davis, Wei Xue, Eric Constans, James P. Grinias

College of Science & Mathematics Departmental Research

Robotic positioning systems are used in a variety of chemical instruments, primarily for liquid handling purposes, such as autosamplers from vials or well plates. Here, two approaches to the design of open-source autosampler positioning systems for use with 96-well plates are described and compared. The first system, a 3-axis design similar to many low-cost 3D printers that are available on the market, is constructed using an aluminum frame and stepper motors. The other system relies upon a series of 3D printed parts to achieve movement with a series of linker arms based on Selective Compliance Assembly Robot Arm (SCARA) design …

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Determination Of The Stress-Strain State Of Rock Mass And Zone Of Inelastic Deformation Around Underground Mine Excavation Using Modern Methods Of Numerical Modelling, Sergey A. Ignatiev, Aleksandr E. Sudarikov, Askar Zh. Imashev Oct 2021

Determination Of The Stress-Strain State Of Rock Mass And Zone Of Inelastic Deformation Around Underground Mine Excavation Using Modern Methods Of Numerical Modelling, Sergey A. Ignatiev, Aleksandr E. Sudarikov, Askar Zh. Imashev

Journal of Sustainable Mining

The paper reviews methods and trends of numerical modelling of geomechanical processes around underground mine excavations. The most rational method of determining the additional stresses caused by the mine excavations is chosen. Mathematical modelling was performed for excavations of various cross sections and different strength of rocks. The dimensions of the inelastic deformation zone around the mine excavations have been identified. The area of the total fracture zone around the excavation, as well as the area of the roof fracture zone are calculated. The results of the fracture zone modelling are presented both as coordinates and in a graphical form. …

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Photoperiod Response In Pensacola Bahiagrass, Ann R. Blount, T. R. Sinclair, R. N. Gates, Kenneth H. Quesenberry, P. Mislevy, R. C. Littell Oct 2021

Photoperiod Response In Pensacola Bahiagrass, Ann R. Blount, T. R. Sinclair, R. N. Gates, Kenneth H. Quesenberry, P. Mislevy, R. C. Littell

IGC Proceedings (1993-2023)

Photoperiod response has been found to influence the growth and development of >Pensacola' derived bahiagrass (Paspalum notatum Flugge var. saure Parodi). Four selection cycles [>Pensacola= (Cycle 0), Cycle 4, >Tifton 9' (Cycle 9) and Cycle 23] resulting from recurrent restricted phenotypic selection (RRPS) of spaced-plants, were field grown in 1999 and 2000, to study photoperiod sensitivity among genotypes. Two day-length treatments were imposed on the field grown plants. One treatment, used only natural light. The second treatment imposed an extended day-length treatment using Quartz-halogen lamps, installed in the field during the fall and winter, to extend day-length to15 …

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Genetic Variability Within Two Adapted Populations Of Tall Wheatgrass (Thynopyrum Ponticum) In Argentina, A. Andrés, R. Guillen Oct 2021

Genetic Variability Within Two Adapted Populations Of Tall Wheatgrass (Thynopyrum Ponticum) In Argentina, A. Andrés, R. Guillen

IGC Proceedings (1993-2023)

The genetic variability within two adapted populations of tall wheatgrass (Thinopyrum ponticum) was evaluated in Argentina, as an introductory part of a breeding programme in progress at our Institute. The final aim of this programme is to provide new cultivars of tall wheatgrass, adapted to different management systems. Two hundred fifty plants per population were grown from seeds, clonally propagated and transplanted as a spaced-plant trial in a randomized design with three replicates. The results indicated large differences between genotypes within the two populations for most attributes measured, though there were no significant differences between populations. Attributes related …

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