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178 Matching Results
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Simulation Of An Antihydrogen Gravity Experiment Utilizing Multiple Apertures
The article presents an analytical model and a Monte Carlo simulation of an antihydrogen gravity experiment that would employ multiple apertures. The model was developed with the primary goal of reducing the experimental run time necessary to determine the direction of free fall acceleration for antimatter in the gravitational field of the Earth. The experiment would confine cryogenic antihydrogen plasma for producing antihydrogen (e.g., by three-body recombination).
Date:
April 19, 2013
Creator:
Hedlof, R. M. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Electrostatic storage ring with focusing provided by the space charge of an electron plasma
Article describes an electronic storage ring that employs the space charge of an electron plasma for focusing. An advantage of the present concept is that slow ions, or even a stationary ion plasma, can be confined. The concept employs an artificially structured boundary, which is defined at present as one that produces a spatially periodic static field such that the spatial period and range of the field are much smaller than the dimensions of a plasma or charged-particle beam that is confined by the field.
Date:
April 19, 2013
Creator:
Pacheco, J. L.; Ordonez, Carlos A. & Weathers, Duncan L.
Object Type:
Article
System:
The UNT Digital Library
Accelerator-based fusion with a low temperature target
This article reports a study of a cold target with a high Fermi energy in light of recent research that points to a new phase of hydrogen, which is hypothesized to be related to metallic hydrogen. It has been shown that if the energy transfer between injected ions and target electrons is sufficiently small, net energy gain can be achieved. As such, the target is considered to be composed of nuclei and delocalized electrons.
Date:
April 19, 2013
Creator:
Phillips, R. E. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Classical trajectory Monte Carlo code for simulating ion beam focusing or defocusing with magnetic elements modeled as current loops or current lines
Article describes a computational tool that can be used for designing magnetic focusing or defocusing systems. A fully three-dimensional classical trajectory Monte Carlo simulation has been developed.
Date:
April 19, 2013
Creator:
Lane, Ryan A. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Dual levitated coils for antihydrogen production
Article on theoretical and experimental efforts to use dual levitated coils to confine relatively large, cold, dense non-drifting recombining antihydrogen plasmas. The theoretical effort includes the development of a classical trajectory Monte Carlo simulation of confinement. The experimental effort includes levitation of a NdFeB permanent ring magnet, which produces a magnetic field that is qualitatively similar to the field that would be produced by the two coaxial superconducting magnetic coils.
Date:
April 19, 2013
Creator:
Wofford, Joshua D. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Crystal structure of bis(acetonitrile-κN)(4,4′-di-tert-butyl-2,2′-bipyridine-κ2N,N′)platinum(II) bis(tetrafluoridoborate) packing as head-to-head dimers
Article discusses the crystal structure of a platinum(II) supramolecular building block, [Pt(dbbpy)(NCCH3)2](BF4)2 (dbbpy = 4,4′-di-tert-butyl-2,2′-bipyridine, C18H24N2).
Date:
April 24, 2018
Creator:
Joseph, Chris; Nesterov, Vladimir N. & Smucker, Bradley W.
Object Type:
Article
System:
The UNT Digital Library
Spatially Periodic Electromagnetic Force Field For Plasma Confinement and Control
In this article, a theoretical understanding is developed of the single-particle reflection properties of a force field, considering the incident charged particles to have a non-drifting, isotropic velocity distribution. Classical trajectory Monte Carlo simulations and analytical modeling are employed. The initiation of an experimental effort to study force fields is described.
Date:
April 17, 2012
Creator:
Ordonez, Carlos A.; Pacheco, J. L. & Weathers, Duncan L.
Object Type:
Article
System:
The UNT Digital Library
Structural Consideration in Designing Organotin Polyethers to Arrest the Growth of Breast Cancer Cells In Vitro
The article looks at antitumor activity using a matched pair of cell lines MDA-MB-231 cells that are estrogen-independent, estrogen receptor negative and MCF-7 cells, a cell line that is estrogen receptor (ER) positive. Those polyethers that contained a O-phenyl unit were able to significantly inhibit the non-estrogen sensitive cell line but were much less effective against the estrogen sensitive cell line; that is, the human breast cancer cell line MDA-MB-231 showed better test results for polymers derived from diols containing the O-phenyl moiety than the breast cancer cell line MCF-7, a well-characterized estrogen receptor positive control cell line.
Date:
April 15, 2011
Creator:
Carraher, Charles E., Jr.; Roner, Michael R.; Shahi, Kimberly & Barot, Girish
Object Type:
Article
System:
The UNT Digital Library
Crystal structure of 1,3-bis(hydroxymethyl)-2-oxaadamantane, C₁₁H₁₈O₃
This article describes the crystal structure of 1,3-bis(hydroxymethyl)-2-oxaadamantane, C₁₁H₁₈O₃.
Date:
April 1, 2001
Creator:
Bryan, J.C.; Mlinarić-Majerski, K.; Kragol, G. & Marchand, A.P.
Object Type:
Article
System:
The UNT Digital Library
Crystal structure of bis(acetonitrile-𝖪N)(4,4'-di-tert-butyl-2,2'-bipyridine-𝖪²N,N')platinum(II) bis(tetra-fluoridoborate) packing as head-to-head dimers
This article describes the crystal structure of a platinum(II) supramolecular building block, [Pt-(dbbpy)NNCCH₃)₂](BF₄)₂ (dbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine, C₁₈H₂₄N₂).
Date:
April 16, 2018
Creator:
Joseph, Chris; Nesterov, Vladimir N. & Smucker, Bradley W.
Object Type:
Article
System:
The UNT Digital Library
Energy transfer in ZnO-anthracene hybrid structure
This article investigates the origin of the modification of the emission properties of the hybrid structure using temperature dependent and time-dependent photoluminescence spectroscopy.
Date:
April 4, 2012
Creator:
Shimada, Ryoko; Urban, Ben E.; Sharma, Mamta; Singh, Akhilesh; Avrutin, Vitaliy; Morkoç, Hadis et al.
Object Type:
Article
System:
The UNT Digital Library
Origin of Room Temperature Broadband Light Emission and Carrier Dynamics in Ag Ion-Implanted Silicon Nanocrystals
This article studies the origin of broad band light emission in the ultraviolet to the red from silicon nanoparticles fabricated using a single low energy silver ion implantation.
Date:
April 2, 2012
Creator:
Singh, Akhilesh; Grycznski, Karol G. & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile
This article describes an artificial nest experiment to assess the impact of predators on daily survival rates of artificial bird nests in three different habitat types.
Date:
April 28, 2011
Creator:
Maley, Brett M.; Anderson, Christopher B.; Stodola, Kirk & Rosemond, Amy D.
Object Type:
Article
System:
The UNT Digital Library
The positions of λₘₐₓ for some trimethylsilyl-substituted silylenes
This article describes how low-temperature photolysis of tris(trimethylsilyl)silane derivatives in a 3-methylpentane glass at 77 K yields hexamethyldisilane and trimethylsilyl-substituted silylenes.
Date:
April 17, 1995
Creator:
Bott, S. G.; Marshall, Paul; Wagenseller, P. E.; Wang, Y. & Conlin, R. T.
Object Type:
Article
System:
The UNT Digital Library
Physicians, Clinics, and Neighborhoods: Multiple Levels of Influence on Colorectal Cancer Screening
This article describes variability in colorectal cancer (CRC) test use and compares the performance of novel cross-classified and traditional hierarchical models.
Date:
April 14, 2014
Creator:
Pruitt, Sandi L.; Leonard, Tammy; Zhang, Song; Schootman, Mario; Halm, Ethan A. & Gupta, Samir
Object Type:
Article
System:
The UNT Digital Library
The Mammary Gland Carcinogens: The Role of Metal Compounds and Organic Solvents
This article reviews the role of metal compounds and organic solvents in breast cancer development.
Date:
April 24, 2013
Creator:
Mulware, Stephen Juma
Object Type:
Article
System:
The UNT Digital Library
Hawk Mountain: A Conservation Success Story
Book review of "Hawk Mountain: A Conservation Success Story" by James J. Brett and Keith L. Bildstein.
Date:
April 27, 2016
Creator:
Bednarz, James C.
Object Type:
Article
System:
The UNT Digital Library
Direct Graphene Growth on Metal Oxides by Molecular Epitaxy
Patent relating to the controlled, layer-by-layer growth of graphene on a useful, magnetizable/and or insulating substrate using molecular beam epitaxy (MBE).
Date:
June 13, 2013
Creator:
Kelber, Jeffry A.
Object Type:
Patent
System:
The UNT Digital Library
Morphology and Cardiac Physiology Are Differentially Affected by Temperature in Developing Larvae of the Marine Fish Mahi-Mahi (Coryphaena Hippurus)
This article investigates the influence of water temperature on cardiac plasticity in developing mahi-mahi.
Date:
April 21, 2017
Creator:
Perrichon, Prescilla; Pasparakis, Christina; Mager, Edward M.; Stieglitz, John D.; Benetti, Daniel D.; Grosell, Martin et al.
Object Type:
Article
System:
The UNT Digital Library
Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China
This article examines how potato production can be improved by altering planting date in China’s semiarid region, thus improving potato adaptation to climate change.
Date:
April 17, 2017
Creator:
Hu, Qi; Yang, Ning; Pan, Feifei; Pan, Xuebiao; Wang, Xiaoxiao & Yang, Pengyu
Object Type:
Article
System:
The UNT Digital Library
Coupling of Surface Plasmon Polariton in Al-Doped ZnO with Fabry-Pérot Resonance for Total Light Absorption
This article presents finite-difference time-domain (FDTD) simulations on total light absorption (TLA) resulting from the coupling of a surface plasmon polariton (SPP) with Fabry-Pérot (F-P) resonance in a three-layer structure consisting of an AZO square lattice hole array, a spacer, and a layer of silver.
Date:
April 27, 2017
Creator:
George, David; Adewole, Murthada; Hassan, Safaa; Lowell, David; Cui, Jingbiao; Zhang, Hualiang et al.
Object Type:
Article
System:
The UNT Digital Library
Gelsolin-mediated activation of PI3K/Akt pathway is crucial for hepatocyte growth factor-induced cell scattering in gastric carcinoma
This article highlights gelsolin as an important pro-disseminative factor contributing to the aggressive phenotype of diffuse gastric cancer.
Date:
April 5, 2016
Creator:
Huang, Baohua; Deng, Shuo; Loo, Ser Yue; Datta, Arpita; Yap, Yan Lin; Yan, Benedict et al.
Object Type:
Article
System:
The UNT Digital Library
ANXA1 inhibits miRNA-196a in a negative feedback loop through NF-kB and c-Myc to reduce breast cancer proliferation
This article shows that miR196a was highly expressed in ER+MCF-7 breast cancer cells when compared to normal mammary gland cells, with expression levels negatively correlating to ANXA1.
Date:
April 20, 2016
Creator:
Yuan, Yi; Anbalagan, Durkeshwari; Lee, Lay Hoon; Samy, Ramar Perumal; Shanmugam, Muthu K.; Kumar, Alan Prem et al.
Object Type:
Article
System:
The UNT Digital Library
Erratum to: More Comprehensive Forensic Genetic Marker Analyses for Accurate Human Remains Identification Using Massively Parallel DNA Sequencing
This article provides erratum for the article "More Comprehensive Forensic Genetic Marker Analyses for Accurate Human Remains Identification Using Massively Parallel DNA Sequencing," which incorrectly deleted an author from the author list.
Date:
April 20, 2017
Creator:
Ambers, Angie D.; Churchill, Jennifer D.; King, Jonathan L.; Stoljarova, Monika; Gill-King, Harrell; Assidi, Mourad et al.
Object Type:
Article
System:
The UNT Digital Library