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Articles 2911 - 2940 of 24230
Full-Text Articles in Physical Sciences and Mathematics
Design And Synthesis Of Stable Aminyl And Nitroxide Radical Precursors, Joshua Bryan Lovell
Design And Synthesis Of Stable Aminyl And Nitroxide Radical Precursors, Joshua Bryan Lovell
Department of Chemistry: Dissertations, Theses, and Student Research
Aminyl diradicals with sterically-hindered tert-butyl groups have yet to be fully investigated for their increased stability due to their difficulty in synthesis. The first chapter of this thesis details design and synthesis towards sterically-hindered aminyl radical and diradical precursors.
Structural features effecting nitroxide radical stability have been well investigated except for the impact on the ring-size of stability of nitroxides towards reduction by ascorbate. Two 7-membered nitroxides derived from TEMPONE and TEMPOL have been synthesized and characterized. The alcohol nitroxide shows increased stability towards reduction by ascorbate compared to the corresponding TEMPOL, while the other nitroxide shows decreased stability compared …
Computational Studies Of Thermal Properties And Desalination Performance Of Low-Dimensional Materials, Yang Hong
Department of Chemistry: Dissertations, Theses, and Student Research
During the last 30 years, microelectronic devices have been continuously designed and developed with smaller size and yet more functionalities. Today, hundreds of millions of transistors and complementary metal-oxide-semiconductor cells can be designed and integrated on a single microchip through 3D packaging and chip stacking technology. A large amount of heat will be generated in a limited space during the operation of microchips. Moreover, there is a high possibility of hot spots due to non-uniform integrated circuit design patterns as some core parts of a microchip work harder than other memory parts. This issue becomes acute as stacked microchips get …
Distributed Edge Bundling For Large Graphs, Yves Tuyishime
Distributed Edge Bundling For Large Graphs, Yves Tuyishime
Department of Computer Science and Engineering: Dissertations, Theses, and Student Research
Graphs or networks are widely used to depict the relationships between data entities in diverse scientific and engineering applications. A direct visualization (such as node-link diagram) of a graph with a large number of nodes and edges often incurs visual clutter. To address this issue, researchers have developed edge bundling algorithms that visually merge similar edges into curved bundles and can effectively reveal high-level edge patterns with reduced visual clutter. Although the existing edge bundling algorithms achieve appealing results, they are mostly designed for a single machine, and thereby the size of a graph they can handle is limited by …
Exploring Eye Tracking Data On Source Code Via Dual Space Analysis, Li Zhang
Exploring Eye Tracking Data On Source Code Via Dual Space Analysis, Li Zhang
Department of Computer Science and Engineering: Dissertations, Theses, and Student Research
Eye tracking is a frequently used technique to collect data capturing users' strategies and behaviors in processing information. Understanding how programmers navigate through a large number of classes and methods to find bugs is important to educators and practitioners in software engineering. However, the eye tracking data collected on realistic codebases is massive compared to traditional eye tracking data on one static page. The same content may appear in different areas on the screen with users scrolling in an Integrated Development Environment (IDE). Hierarchically structured content and fluid method position compose the two major challenges for visualization. We present a …
The Derived Category Of A Locally Complete Intersection Ring, Joshua Pollitz
The Derived Category Of A Locally Complete Intersection Ring, Joshua Pollitz
Department of Mathematics: Dissertations, Theses, and Student Research
Let R be a commutative noetherian ring. A well-known theorem in commutative algebra states that R is regular if and only if every complex with finitely generated homology is a perfect complex. This homological and derived category characterization of a regular ring yields important ring theoretic information; for example, this characterization solved the well-known ``localization problem" for regular local rings. The main result of this thesis is establishing an analogous characterization for when R is locally a complete intersection. Namely, R is locally a complete intersection if and only if each nontrivial complex with finitely generated homology can build a …
Validation Of A Death Assay For Angiostrongylus Cantonensis Larvae (L3) Using Propidium Iodide In A Rat Model (Rattus Norvegicus), Susan I. Jarvi, John Jacob, Robert T. Sugihara, Israel L. Leinbach, Ina H. Klasner, Lisa M. Kaluna, Kirsten A. Snook, M. Kathleen Howe, Steven H. Jacquier, Ingo Lange, Abigail L. Atkinson, Ashley R. Deane, Chris N. Niebuhr, Shane R. Siers
Validation Of A Death Assay For Angiostrongylus Cantonensis Larvae (L3) Using Propidium Iodide In A Rat Model (Rattus Norvegicus), Susan I. Jarvi, John Jacob, Robert T. Sugihara, Israel L. Leinbach, Ina H. Klasner, Lisa M. Kaluna, Kirsten A. Snook, M. Kathleen Howe, Steven H. Jacquier, Ingo Lange, Abigail L. Atkinson, Ashley R. Deane, Chris N. Niebuhr, Shane R. Siers
United States Department of Agriculture Wildlife Services: Staff Publications
Angiostrongylus cantonensis is a pathogenic nematode and the cause of neuroangiostrongyliasis, an eosinophilic meningitis more commonly known as rat lungworm disease. Transmission is thought to be primarily due to ingestion of infective third stage larvae (L3) in gastropods, on produce, or in contaminated water. The gold standard to determine the effects of physical and chemical treatments on the infectivity of A. cantonensis L3 larvae is to infect rodents with treated L3 larvae and monitor for infection, but animal studies are laborious and expensive and also raise ethical concerns. This study demonstrates propidium iodide (PI) to be a reliable marker of …
Phosphonate-Directed Catalytic Asymmetric Hydroboration: Synthesis Of Functionalized Chiral Secondary And Tertiary Boronic Esters And Mechanistic Insights, Suman Chakrabarty
Phosphonate-Directed Catalytic Asymmetric Hydroboration: Synthesis Of Functionalized Chiral Secondary And Tertiary Boronic Esters And Mechanistic Insights, Suman Chakrabarty
Department of Chemistry: Dissertations, Theses, and Student Research
Over the past 30 years, catalytic asymmetric hydroboration (CAHB) of alkenes has emerged as a leading methodology to access chiral primary and secondary boronic esters. However, it wasn’t until 2015 that directed-CAHB was for the first time shown to efficiently access chiral tertiary boronic esters. The latter are excellent precursors to synthetically challenging structural motifs such as chiral tertiary alcohols, carbinamines and all-carbon quaternary stereocenters via stereospecific C-B bond substitutions. This dissertation focuses on phosphonate-directed CAHB of diverse alkene substrates, including challenging stereodefined trisubstituted alkenes, to efficiently access multifunctional chiral secondary and tertiary boronic esters. Mechanistic insights obtained via deuterium …
Changes In Mammalian Abundance Through The Eocene-Oligocene Climate Transition In The White River Group Of Nebraska, Usa, Robert Gillham
Changes In Mammalian Abundance Through The Eocene-Oligocene Climate Transition In The White River Group Of Nebraska, Usa, Robert Gillham
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Marine records show major cooling during the Eocene-Oligocene Climate Transition (EOCT). Most proxy studies in the White River Group suggest drying across the EOCT, and some suggest cooling. The lower resolution continental record has hindered a direct correlation of the marine climate record to Nebraska. I explore various correlation schemes and what they imply for faunal changes. This study compiles and analyzes data from 4,875 specimens in the University of Nebraska State Museum (UNSM) collection to test the hypothesis that climate change across the Eocene-Oligocene (E-O) boundary caused significant abundance changes in mammals. A series of binning schemes was created. …
Dimensional Analysis Of Robot Software Without Developer Annotations, John-Paul W. Ore
Dimensional Analysis Of Robot Software Without Developer Annotations, John-Paul W. Ore
Department of Computer Science and Engineering: Dissertations, Theses, and Student Research
Robot software risks the hazard of dimensional inconsistencies. These inconsistencies occur when a program incorrectly manipulates values representing real-world quantities. Incorrect manipulation has real-world consequences that range in severity from benign to catastrophic. Previous approaches detect dimensional inconsistencies in programs but require extra developer effort and technical complications. The extra effort involves developers creating type annotations for every variable representing a real-world quantity that has physical units, and the technical complications include toolchain burdens like specialized compilers or type libraries.
To overcome the limitations of previous approaches, this thesis presents novel methods to detect dimensional inconsistencies without developer annotations. We …
The Design And Implementation Of Aida: Ancient Inscription Database And Analytics System, M Parvez Rashid
The Design And Implementation Of Aida: Ancient Inscription Database And Analytics System, M Parvez Rashid
Department of Computer Science and Engineering: Dissertations, Theses, and Student Research
AIDA, the Ancient Inscription Database and Analytic system can be used to translate and analyze ancient Minoan language. The AIDA system currently stores three types of ancient Minoan inscriptions: Linear A, Cretan Hieroglyph and Phaistos Disk inscriptions. In addition, AIDA provides candidate syllabic values and translations of Minoan words and inscriptions into English. The AIDA system allows the users to change these candidate phonetic assignments to the Linear A, Cretan Hieroglyph and Phaistos symbols. Hence the AIDA system provides for various scholars not only a convenient online resource to browse Minoan inscriptions but also provides an analysis tool to explore …
Magneto - Electric Logic Devices Using Semiconductor Channel With Large Spin - Orbit Coupling, Dmitri E. Nikonov, Christian H. Binek, Xia Hong, Jonathan P. Bird, Kang L. Wang, Peter L. Dowben
Magneto - Electric Logic Devices Using Semiconductor Channel With Large Spin - Orbit Coupling, Dmitri E. Nikonov, Christian H. Binek, Xia Hong, Jonathan P. Bird, Kang L. Wang, Peter L. Dowben
Department of Physics and Astronomy: Faculty Publications
Antiferromagnetic magneto - electric spin - orbit read ( AF SOR ) logic devices are presented . The devices include a voltage - controlled magnetoelectric ( ME ) layer that switches polarization in response to an electric field from the applied voltage and a narrow channel conductor of a spin - orbit coupling ( SOC ) material on the ME layer . One or more sources and one or more drains , each optionally formed of ferromagnetic material , are provided on the SOC material .
Management Regime And Habitat Response Influence Abundance Of Regal Fritillary (Speyeria Idalia) In Tallgrass Prairie, K. Mccullough, G. Albanese, D.A. Haukos, A.M. Ricketts, S. Stratton
Management Regime And Habitat Response Influence Abundance Of Regal Fritillary (Speyeria Idalia) In Tallgrass Prairie, K. Mccullough, G. Albanese, D.A. Haukos, A.M. Ricketts, S. Stratton
United States Geological Survey: Staff Publications
The >2,570,000-ha Flint Hills ecoregion of Kansas, USA, harbors the largest remaining contiguous tract of tallgrass prairie in North America, a unique system, as the remainder of North America’s tallgrass prairie has succumbed to development and conversion. Consequently, the loss and degradation of tallgrass prairie has reduced populations of many North American prairie-obligate species including the regal fritillary (Speyeria idalia) butterfly. Population abundance and occupied range of regal fritillary have declined >99%, restricting many populations to isolated, remnant patches of tallgrass prairie. Such extensive decline has resulted in consideration of the regal fritillary for protection under the Endangered Species Act. …
Contact Rates With Nesting Birds Before And After Invasive Snake Removal: Estimating The Effects Of Trap-Based Control, Amy A. Yackel Adams, Melia G. Nafus, Page E. Klug, Björn Lardner, M.J. Mazurek, Julie A. Savidge, Robert N. Reed
Contact Rates With Nesting Birds Before And After Invasive Snake Removal: Estimating The Effects Of Trap-Based Control, Amy A. Yackel Adams, Melia G. Nafus, Page E. Klug, Björn Lardner, M.J. Mazurek, Julie A. Savidge, Robert N. Reed
United States Department of Agriculture Wildlife Services: Staff Publications
Invasive predators are responsible for almost 60% of all vertebrate extinctions worldwide with the most vulnerable faunas occurring on islands. The brown treesnake (Boiga irregularis) is a notorious invasive predator that caused the extirpation or extinction of most native forest birds on Guam. The success of avian reintroduction efforts on Guam will depend on whether snake-control techniques sufficiently reduce contact rates between brown treesnakes and reintroduced birds. Mouse-lure traps can successfully reduce brown treesnake populations at local scales. Over a 22-week period both with and without active snake removal, we evaluated snake-trap contact rates for mouse- and bird-lure traps. Bird-lure …
Resonance Electron Interaction With Five-Membered Heterocyclic Compounds: Vibrational Feshbach Resonances And Hydrogen-Atom Stripping, Stanislav A. Pshenichnyuk, Ilya I. Fabrikant, Alberto Modelli, Sylwia Ptasińska, Alexei S. Komolov
Resonance Electron Interaction With Five-Membered Heterocyclic Compounds: Vibrational Feshbach Resonances And Hydrogen-Atom Stripping, Stanislav A. Pshenichnyuk, Ilya I. Fabrikant, Alberto Modelli, Sylwia Ptasińska, Alexei S. Komolov
Department of Physics and Astronomy: Faculty Publications
Low-energy (0–15 eV) resonance electron attachment to a series of five-membered heterocyclic rings (isoxazole, imidazole, pyrazole, pyrrole, 1-methyl-, and 2-methylimidazole) is studied under gas-phase conditions by means of electron transmission spectroscopy and dissociative electron attachment spectroscopy (DEAS). Experimental spectral features are assigned on the basis of Hartree-Fock and density functional theory calculations. Sharp features, with a width of less than 0.1 eV, observed in the electron transmission spectra of imidazole, pyrazole, and pyrrole close to 0.45 eV, i.e., well below the energy of their lowest-lying π∗ shape resonances detected at 1.90, 1.87, and 2.33 eV, respectively, are associated with …
An Evaluation Of The Registration And Use Prospects For Four Candidate Toxicants For Controlling Invasive Mongooses (Herpestes Javanicus Auropunctatus), Emily W. Ruell, Chris N. Niebuhr, Robert T. Sugihara, Shane R. Siers
An Evaluation Of The Registration And Use Prospects For Four Candidate Toxicants For Controlling Invasive Mongooses (Herpestes Javanicus Auropunctatus), Emily W. Ruell, Chris N. Niebuhr, Robert T. Sugihara, Shane R. Siers
United States Department of Agriculture Wildlife Services: Staff Publications
The eradication or control of invasive small Indian mongooses from islands likely requires toxic baiting when removal by trapping proves insufficient. The one toxic bait currently registered for mongooses in the United States has relatively low palatability and efficacy for mongooses. Developing and registering a new pesticide can be very expensive, while funding for developing toxicants for mongooses is limited. Once registered, use of a toxic bait may be hindered by other factors, such as public opposition to an inhumane toxicant, poorer efficacy than expected, or if the toxic bait is difficult for applicators to apply or store. Therefore, we …
Reconfigurable Ferromagnetic Liquid Droplets, Xubo Liu, Noah Kent, Alejandro Ceballos, Robert Streubel, Yufeng Jiang, Yu Chai, Paul Y. Kim, Joe Forth, Frances Hellman, Shaowei Shi, Dong Wang, Brett A. Helms, Paul D. Ashby, Peter Fischer, Thomas P. Russell
Reconfigurable Ferromagnetic Liquid Droplets, Xubo Liu, Noah Kent, Alejandro Ceballos, Robert Streubel, Yufeng Jiang, Yu Chai, Paul Y. Kim, Joe Forth, Frances Hellman, Shaowei Shi, Dong Wang, Brett A. Helms, Paul D. Ashby, Peter Fischer, Thomas P. Russell
Robert Streubel Papers
Solid ferromagnetic materials are rigid in shape and cannot be reconfigured. Ferrofluids, although reconfigurable, are paramagnetic at room temperature and lose their magnetization when the applied magnetic field is removed. Here, we show a reversible paramagnetic-to-ferromagnetic transformation of ferrofluid droplets by the jamming of a monolayer of magnetic nanoparticles assembled at the water-oil interface. These ferromagnetic liquid droplets exhibit a finite coercivity and remanent magnetization. They can be easily reconfigured into different shapes while preserving themagnetic properties of solid ferromagnets with classic north-south dipole interactions. Their translational and rotational motions can be actuated remotely and precisely by an external magnetic …
How Characteristic Is The Species Characteristic Selection Scale?, Erica F. Stuber, Joseph J. Fontaine
How Characteristic Is The Species Characteristic Selection Scale?, Erica F. Stuber, Joseph J. Fontaine
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Aim: The importance of framing investigations of organism–environment relationships to interpret patterns at relevant spatial scales is increasingly recognized. However, most research related to environmental relationships is single‐scaled, implicitly or explicitly assuming that a “species characteristic selection scale” exists. We tested the premise that a single characteristic scale exists to understand species– environment relationships within species by asking (a) what are the characteristic scales of species’ relationships with environmental predictors, and (b) is within species, cross‐predictor consistency in characteristic scales a general phenomenon.
Location: Nebraska, USA.
Time period: 2016.
Major taxa studied: Birds.
Methods: We used data from 86 species …
Perchlorate Behavior In The Context Of Black Carbon And Metal Cogeneration Following Fireworks Emission At Oak Lake, Lincoln, Nebraska, Usa, Manish Kumar, Daniel D. Snow, Yusong Li, Patrick Shea
Perchlorate Behavior In The Context Of Black Carbon And Metal Cogeneration Following Fireworks Emission At Oak Lake, Lincoln, Nebraska, Usa, Manish Kumar, Daniel D. Snow, Yusong Li, Patrick Shea
Nebraska Water Center: Faculty Publications
The imprints of fireworks displays on the adjacent water body were investigated from the perspective of cogeneration of black carbon, metals and perchlorate (ClO4–). In particular, the mixing and dissipation of ClO4– were studied at Oak Lake, Lincoln, Nebraska, following fireworks displays in 2015 and 2016. Following the display, ClO4– concentration in the water increased up to 4.3 μg/L and 4.0 μg/L in 2015 and 2016, respectively. A first-order model generally provided a good fit to the measured perchlorate concentrations from which the rate of dissipation was estimated as 0.07 d–1 in …
Anisotropy And Orbital Moment In Sm-Co Permanent Magnets, Bhaskar Das, Renu Choudhary, Ralph Skomski, Balamurugan Balasubramanian, Arjun K. Pathak, Durga Paudyal, David J. Sellmyer
Anisotropy And Orbital Moment In Sm-Co Permanent Magnets, Bhaskar Das, Renu Choudhary, Ralph Skomski, Balamurugan Balasubramanian, Arjun K. Pathak, Durga Paudyal, David J. Sellmyer
Department of Physics and Astronomy: Faculty Publications
Structural and magnetic properties of iron-free and iron-substituted SmCo5 have been investigated theoretically and experimentally. The nanocrystalline ribbons of SmCo5−xFex (0 [] x [] 2), which were produced by rapid solidification, crystallize in the hexagonal CaCu5 structure for x [] 0.75. Small Fe additions (x = 0.25) substantially improve the coercivity, from 0.45 to 2.70 T, which we interpret as combined intrinsic and extrinsic effect. Most of our findings are consistent with past samarium-cobalt research, but some are at odds with findings that have seemingly been well established through decades of rare-earth transition-metal research. In …
Search For Resonant Double Higgs Production With Bbzz Decays In The Bbℓℓνν Final State In Pp Collisions At √S = 13 Tev, Rami Kamalieddin
Search For Resonant Double Higgs Production With Bbzz Decays In The Bbℓℓνν Final State In Pp Collisions At √S = 13 Tev, Rami Kamalieddin
Department of Physics and Astronomy: Dissertations, Theses, and Student Research
Since the discovery of the Higgs boson in 2012 by the ATLAS and CMS experiments, most of the quantum mechanical properties that describe the long-awaited Higgs boson have been measured. Due to the outstanding work of the LHC, over a hundred of fb−1 of proton collisions data have been delivered to both experiments. Finally, it became sensible for analyses teams to start working with a very low cross section processes involving the Higgs boson, e.g., a recent success in observing ttH and VHbb processes. One of the main remaining untouched topics is a double Higgs boson production. However, an …
Optimization Of Protein Entrapment In Affinity Microcolumns Using Hydrazide-Activated Silica And Glycogen As A Capping Agent, John Vargas-Badilla, Saumen Poddar, Shiden Azaria, Chenhua Zhang, David S. Hage
Optimization Of Protein Entrapment In Affinity Microcolumns Using Hydrazide-Activated Silica And Glycogen As A Capping Agent, John Vargas-Badilla, Saumen Poddar, Shiden Azaria, Chenhua Zhang, David S. Hage
David Hage Publications
Several approaches were compared for the entrapment of proteins within hydrazide-activated silica for use in affinity microcolumns and high performance affinity chromatography. Human serum albumin (HSA) and concanavalin A (Con A) were used as model proteins for this work. Items considered in this study included the role played by the solution volume, amount of added protein, and use of slurry vs. on-column entrapment on the levels of solute retention and extent of protein immobilization that could be obtained by means of entrapment. The levels of retention and protein immobilization were evaluated by injecting warfarin or 4-methylumbellipheryl α-D-mannopyranoside as solutes with …
New Algorithms For Large Datasets And Distributions, Sutanu Gayen
New Algorithms For Large Datasets And Distributions, Sutanu Gayen
Department of Computer Science and Engineering: Dissertations, Theses, and Student Research
In this dissertation, we make progress on certain algorithmic problems broadly over two computational models: the streaming model for large datasets and the distribution testing model for large probability distributions.
First we consider the streaming model, where a large sequence of data items arrives one by one. The computer needs to make one pass over this sequence, processing every item quickly, in a limited space. In Chapter 2 motivated by a bioinformatics application, we consider the problem of estimating the number of low-frequency items in a stream, which has received only a limited theoretical work so far. We give an …
Operationalizing Ecological Resilience Concepts For Managing Species And Ecosystems At Risk, Jeanne C. Chambers, Craig R. Allen, Samuel A. Cushman
Operationalizing Ecological Resilience Concepts For Managing Species And Ecosystems At Risk, Jeanne C. Chambers, Craig R. Allen, Samuel A. Cushman
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
This review provides an overview and integration of the use of resilience concepts to guide natural resources management actions. We emphasize ecosystems and landscapes and provide examples of the use of these concepts from empirical research in applied ecology. We begin with a discussion of definitions and concepts of ecological resilience and related terms that are applicable to management. We suggest that a resilience-based framework for management facilitates regional planning by providing the ability to locate management actions where they will have the greatest benefits and determine effective management strategies. We review the six key components of a resilience-based framework, …
Identifying Characteristics Of Actionable Science For Drought Planning And Adaptation, Adam Wilke, Amanda Cravens
Identifying Characteristics Of Actionable Science For Drought Planning And Adaptation, Adam Wilke, Amanda Cravens
United States Geological Survey: Publications
Changing climate conditions can make water management planning and drought preparedness decisions more complicated than ever before. Federal and State natural resource managers can no longer rely solely on historical trends as a baseline and thus are in need of science that is relevant to their specific needs to inform important planning decisions. Questions remain, however, regarding the most effective and efficient methods for extending scientific knowledge and products into management and decision-making. This project analyzed two unique cases of water management to better understand how science can be translated into resource management actions and decision-making, focusing particularly on how …
Drought Analyses Of The Horn´E PoˇZitavie Region (Slovakia) In The Period 1966–2013, Jaroslav Vido, Paulina Nalevankova, Jan Valach, Zbysek Sustek, Tsegaye Tadesse
Drought Analyses Of The Horn´E PoˇZitavie Region (Slovakia) In The Period 1966–2013, Jaroslav Vido, Paulina Nalevankova, Jan Valach, Zbysek Sustek, Tsegaye Tadesse
Drought Mitigation Center: Faculty Publications
+is study focuses on the characterization of historical drought occurrences in the Horn´e Poˇzitavie region of Slovakia over the period 1966–2013 using Standardized Precipitation-Evapotranspiration Index (SPEI). Trend analyses were evaluated by the Mann–Kendall (MK) test as well as cumulative sum of rank difference (CRD) test. +e results showed that drought occurs in the region regularly (recurrent climate feature), while the trend analysis indicated the trend toward more arid climatic conditions. However, CRD trend analyses showed that the subtrend changed direction toward less drier conditions in the late 1980s and early 1990s. Analyses of SPEI trends in individual months showed a …
Studies Of Beauty Suppression Via Nonprompt D0 Mesons In Pb-Pb Collisions At √SNn =5.02 Tev, A. M. Sirunyan
Studies Of Beauty Suppression Via Nonprompt D0 Mesons In Pb-Pb Collisions At √SNn =5.02 Tev, A. M. Sirunyan
Department of Physics and Astronomy: Faculty Publications
The transverse momentum spectra of D0 mesons from b hadron decays are measured at midrapidity (|y| < 1) in pp and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The D0 mesons from b hadron decays are distinguished from prompt D0 mesons by their decay topologies. In Pb-Pb collisions, the B → D0 yield is found to be suppressed in the measured pT range from 2 to 100 GeV=c as compared to pp collisions. The suppression is weaker than that of prompt D0 mesons and charged hadrons …
A Room-Temperature Ferroelectric Semimetal, Pankaj Sharma, Fei-Xiang Xiang, Ding-Fu Shao, Dawei Zhang, Evgeny Y. Tsymbal, Alex R. Hamilton, Jan Seidel
A Room-Temperature Ferroelectric Semimetal, Pankaj Sharma, Fei-Xiang Xiang, Ding-Fu Shao, Dawei Zhang, Evgeny Y. Tsymbal, Alex R. Hamilton, Jan Seidel
Evgeny Tsymbal Publications
Coexistence of reversible polar distortions and metallicity leading to a ferroelectric metal, first suggested by Anderson and Blount in 1965, has so far remained elusive. Electrically switchable intrinsic electric polarization, together with the direct observation of ferroelectric domains, has not yet been realized in a bulk crystalline metal, although incomplete screening by mobile conduction charges should, in principle, be possible. Here, we provide evidence that native metallicity and ferroelectricity coexist in bulk crystalline van der Waals WTe2 by means of electrical transport, nanoscale piezoresponse measurements, and first-principles calculations. We show that, despite being a Weyl semimetal, WTe2 has switchable spontaneous …
La Evolucion De Glaciares De Escombros Y Morenas En La Cuenca Del Rio Blanco, Mendoza, William J. Wayne
La Evolucion De Glaciares De Escombros Y Morenas En La Cuenca Del Rio Blanco, Mendoza, William J. Wayne
Department of Earth and Atmospheric Sciences: Faculty Publications
RESUMEN: La subcuenca del río Blanco en el cordón del Plata, que incluye los valles de Angostura y Vallecitos, tiene 85 km2, de los cuales 4.7 km2 son de glaciares de escombros activos, 7.4 km" de glaciares de escombros fósiles y morrenas. Los dos valles con rumbo al sureste son erosionados en rocas volcánicas y contienen largas lenguas de glaciares de escombros que se extienden hasta los 3.300 m. Los dos valles con rumbo al este tuvieron glaciares hasta tiempos recientes y en uno de ellos aún existe un glaciar cubierto. Los glaciares de escombros en …
Bibliography Of Assorted Institute Of Agriculture And Natural Resources Publications
Bibliography Of Assorted Institute Of Agriculture And Natural Resources Publications
School of Natural Resources: Faculty Publications
No abstract provided.
Gage County Preliminary Ground Water Study (Gm-20): Reed, E.C. Conservation And Survey Division , Size 8.5" X 11"., E.C. Reed
Conservation and Survey Division
No abstract provided.