# Physics Commons™

32,235 Full-Text Articles 49,245 Authors 8,161,933 Downloads 269 Institutions

## All Articles in Physics

32,235 full-text articles. Page 3 of 893.

Absorbance At The Crabtree, 2021 Coastal Carolina University

#### Absorbance At The Crabtree, Jaquon Williams

##### Undergraduate Research Competition

Water scarcity is a growing concern across the world in this document we investigate Crabtree swamp, that’s in Conway, SC. Water absorption is the amount of water taken up by flour to achieve the desired consistency and create a quality end-product. Yet, in this case, we're talking about the Crabtree swamp land area. The goal of this research project is to compare and contrast water absorbance in the area.

The purpose of this study is to naturalize the aquatic ecosystem processes in Crabtree Swamp and improve the survivability of resources of regional significance that have been identified. Resources ...

2021 University of Richmond

#### Cosmological Inflation In N-Dimensional Gaussian Random Fields With Algorithmic Data Compression, Connor Painter

##### Arts & Sciences Student Symposium

The leading theories of inflation are increasingly multi-dimensional. In this project, we consider a natural hypothesis that the inflaton potential, the theorized mechanism behind accelerated expansion in the early universe, is maximally random. We present a program that simulates random potentials, solves equations of motion, and catalogues predictions for observable quantities, such as perturbation spectra.

2021 University of Richmond

#### Analyzing Polychromatic Map-Making Techniques From Monochromatic Time-Ordered Data, Brianna Cantrall

##### Arts & Sciences Student Symposium

This research focuses on techniques for extracting polychromatic data from a monochromatic time-ordered data signal. Being able to reproduce polychromatic maps from monochromatic data broadens the way in which one can analyze properties of the universe. This polychromatic map reconstruction in this research focuses on being able to further analyze the Cosmic Microwave Background Radiation.

Exploring Manifoldlike Causal Sets And Their Dimensions, 2021 University of Mississippi

#### Exploring Manifoldlike Causal Sets And Their Dimensions, Santosh Bhandari

##### Honors Theses

Causal Set Theory is an approach to quantum gravity that tries to replace the continuum spacetime structure of general relativity with the spacetime that has the property of discreteness and causality. From the standpoint of causal set theory, our spacetime is made up of discrete points that are causally related to one another. A causal set is said to be manifoldlike if it can be faithfully embedded in a Lorentzian manifold. In this thesis, some of the fundamental properties of causal sets are discussed. The first chapter is devoted to the historical background of quantum gravity with a discussion of ...

Unveiling The Mechanism Of Phase And Morphology Selections During The Devitrification Of Al-Sm Amorphous Ribbon, 2021 Sun Yat-sen University

#### Unveiling The Mechanism Of Phase And Morphology Selections During The Devitrification Of Al-Sm Amorphous Ribbon, Fanqiang Meng, Yang Sun, Feng Zhang, Bo Da, Cai-Zhuang Wang, Matthew J. Kramer, Kai-Ming Ho, Dongbai Sun

##### Ames Laboratory Accepted Manuscripts

The complex interplay between energetic and kinetic factors that governs the phase and morphology selections can originate at the earliest stage of crystallization in the amorphous parent phases. Because of the extreme difficulties in capturing the microscopic nucleation process, a detailed picture of how initial disordered structures affect the transformation pathway remains unclear. Here, we report the experimental observation of widely varying phase selection and grain size evolution during the devitrification of a homogeneous melt-spun glassy ribbon. Two different crystalline phases θ−Al5Sm and ɛ−Al60Sm11 are found to form in the different regions of the same metallic glass (MG ...

2021 Southern Adventist University

#### Gained In Translation: The Sudden Pivot Taking Physics Labs To The Cloud As A Reform Opportunity, William B. Laing Iii

##### Faculty Works

I will report on a positive experience with using the forced transition to online learning as an opportunity to adopt one of many best-practice examples from the world of Physics Education Research. Following the example in "Developing scientific decision making by structuring and supporting student agency" by N.G. Holmes, et al [1], (and the instructional materials shared on Physport.org), my efforts were directed toward cueing students to make decisions to design their research question during our online meetings, rather than developing materials to micro-manage their behaviors. Characteristics of the new online medium influenced instructional design and accessibility in ...

Validation Of A Locally Designed Computed Tomography Dose Phantom: A Comparison Study With A Standard Acrylic Phantom In South-South, Nigeria, 2021 Department of Physics Delta State University Abraka, Delta State, Nigeria

#### Validation Of A Locally Designed Computed Tomography Dose Phantom: A Comparison Study With A Standard Acrylic Phantom In South-South, Nigeria, Anwuli Christiana Tobi, Chukwuka Emmanuel Mokobia, Joyce Ekeme Ikubor, Akintayo Daniel Omojola

##### Journal of Global Radiology

Purpose: The aim of this study was to determine the mean volume computed tomography dose index (CTDIvol) for the standard head and body phantoms and locally designed head and body phantoms respectively. Similarly, this study determined and compared the displayed mean CTDIvol and Dose Length Product (DLP) for the above phantoms from the CT monitor. In addition, the percentage deviations of both phantoms were compared with the recommended limits from the International Atomic Energy Agency (IAEA) and the American College of Radiologists (ACR). Materials and

Methods: Dose measurements were made using a standard polymethymethacrylate (PMMA) phantom for head and body ...

Direct Detection Of 5-Mev Protons By Flexible Organic Thin-Film Devices, 2021 University of Bologna, Italy

#### Direct Detection Of 5-Mev Protons By Flexible Organic Thin-Film Devices, Ilaria Fratelli, Andrea Ciavatti, Enrico Zanazzi, Laura Basiricò, Massimo Chiari, Laura Fabbri, John E. Anthony, Alberto Quaranta, Beatrice Fraboni

##### Chemistry Faculty Publications

The direct detection of 5-MeV protons by flexible organic detectors based on thin films is here demonstrated. The organic devices act as a solid-state detector, in which the energy released by the protons within the active layer of the sensor is converted into an electrical current. These sensors can quantitatively and reliably measure the dose of protons impinging on the sensor both in real time and in integration mode. This study shows how to detect and exploit the energy absorbed both by the organic semiconducting layer and by the plastic substrate, allowing to extrapolate information on the present and past ...

Implications Of The Quantum Dna Model For Information Sciences, 2021 University of Tennessee Health Science Center

#### Implications Of The Quantum Dna Model For Information Sciences, F. Matthew Mihelic

##### Faculty Publications

The DNA molecule can be modeled as a quantum logic processor, and this model has been supported by pilot research that experimentally demonstrated non-local communication between cells in separated cell cultures. This modeling and pilot research have important implications for information sciences, providing a potential architecture for quantum computing that operates at room temperature and is scalable to millions of qubits, and including the potential for an entanglement communication system based upon the quantum DNA architecture. Such a system could be used to provide non-local quantum key distribution that could not be blocked by any shielding or water depth, would ...

2021 University of Tennessee Health Science Center

#### Magnetic Vector Potential Manipulation Of Majorana Fermions In Dna Quantum Logic, F. Matthew Mihelic

##### Faculty Publications

In the quantum logic of the DNA molecule, electrons are held and conducted coherently as spinless Cooper pairs and are shielded from electromagnetic energy by a Faraday cage effect of the double lipid bilayer of the nuclear membrane. The magnetic vector potential generated by cellular depolarization can synchronize logical activity in portions of the DNA molecule by affecting spin directions of appropriately oriented spinless electrons via the Aharonov-Bohm effect, but is not blocked by that Faraday cage effect. Within the logically and thermodynamically reversible chiral enantiomeric symmetry of the deoxyribose moieties the decoherent transition of Cooper pair to Dirac pair ...

Data Supporting The Paper "Is The Water Vapor Supersaturation Distribution Gaussian?", 2021 Michigan Technological University

#### Data Supporting The Paper "Is The Water Vapor Supersaturation Distribution Gaussian?", Subin Thomas, Prasanth Prabhakaran, W. Cantrell, Raymond Shaw

##### Michigan Tech Research Data

The data in this file are from the MTU Pi Cloud Chamber and large eddy simulations. This work was supported by NSF grant AGS-1754244. Data are made available in support of the above publication by Thomas et al.. For any further use, e.g., for publication elsewhere, the authors should be contacted to ensure the appropriate use of the data and proper acknowledgment.

Determination Of The Traits In Leguminous Crops Under Saline Condition, 2021 Gulistan state University

#### Determination Of The Traits In Leguminous Crops Under Saline Condition, Tojiddin Kuliev, Karomat Ismailova

##### Karakalpak Scientific Journal

In this study, the variability and determination of genetic traits for winter legume crop varieties the Vostok-55 (Pisum arvense L) and Mirzachul-1 (Vicia villoza Roth L) were investigated under moderate saline soil condition. Results show that the weight of the bean was marked as variable and highly deterministic, and the height of the plants was the most stable. The selection of plants based on these traits is the most effective way of salinity. Both variety the forage pea Vostok-55 and vetch Mirzachul-1 is highly recommended as a sideration and forage crop in saline lands.

2021 University of Massachusetts Amherst

#### A Search For New Resonances Decaying Into A Weak Vector Boson And A Higgs Boson In Hadronic Final States With The Atlas Detector At The Large Hadron Collider, Zachary Alden Meadows

##### Doctoral Dissertations

A search for heavy resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the final state is described. The search uses $139\ \mathrm{fb}^{-1}$ of proton-proton collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS detector at the CERN Large Hadron Collider from 2015 to 2018. The results are presented in terms of constraints on a simplified model with a heavy vector triplet. Upper limits are set on the production cross-section times branching fraction for resonances decaying into a W/Z boson and a Higgs boson in the mass range between 1.2 ...

Dipole Emission Characteristics Near A Topological Insulator Sphere Coated With A Metallic Nanoshell, 2021 Institute of Nuclear Energy Research, Atomic Energy Council

#### Dipole Emission Characteristics Near A Topological Insulator Sphere Coated With A Metallic Nanoshell, Huai-Yi Xie, Railing Chang, P. T. Leung

##### Physics Faculty Publications and Presentations

Topological insulators (TI) are quantum states of (2D/3D) matter with an insulating interior but conducting edge/surface states, with these boundary conducting states being protected topologically by time-reversal symmetry. Composite materials of heavy atoms such as Bi2Te3 can be fabricated to show TI properties due to the strong intrinsic spin-orbit coupling of the electrons in these materials. Among the so many intriguing physical properties of these materials, their topological magneto-electric (TME) response is unique and has been studied intensively in the literature, leading to intriguing optical effects such as Faraday and Kerr rotations of incident polarized ...

Twisted Spatiotemporal Optical Vortex Random Fields, 2021 Air Force Institute of Technology

#### Twisted Spatiotemporal Optical Vortex Random Fields, Milo W. Hyde Iv

##### Faculty Publications

We present twisted spatiotemporal optical vortex (STOV) beams, which are partially coherent light sources that possess a coherent optical vortex and a random twist coupling their space and time dimensions. These beams have controllable partial coherence and transverse orbital angular momentum (OAM), which distinguishes them from the more common spatial vortex and twisted beams (known to carry longitudinal OAM) in the literature and should ultimately make them useful in applications such as optical communications and optical tweezing. We present the mathematical analysis of twisted STOV beams, deriving the mutual coherence function and linear and angular momentum densities. We simulate the ...

College Of Natural Sciences Newsletter, April 2021, 2021 South Dakota State University

#### College Of Natural Sciences Newsletter, April 2021, College Of Natural Sciences

##### College of Natural Sciences Newsletters and Reports

Volume 2, Issue 4

Page 1 Dean's Message
Page 2 & 3 Awards & Recognition
Page 4 Student Spotlight: Allsion Bjornstad
Page 5 Research Spotlight: Dr. Vondruska & Students
Page 6 Department Head Interviews
Page 7 Media Coverage of CNS
Page 8 Open PRAIRIE Data
Page 9 Student Club Spotlight: BMGSA
Page 10 Then & Now: Urban Geography

2021 Embry-Riddle Aeronautical University

#### Investigation Of Trajectory And Control Designs For A Solar Sail To The Moon, Michelle Nadeau

##### PhD Dissertations and Master's Theses

NASA’s Artemis program and other government and commercial projects are working toward establishing a sustainable human presence on the moon. This thesis investigates the technical feasibility of a solar sail-based spacecraft (sailcraft) as a low-cost method of delivering cargo or science instruments to the moon and demonstrates how this sailcraft could be controlled to change its orbit. The concept is a low-cost, commercial launch vehicle-deployable, CubeSat-based sailcraft with a square sail, assumed attitude control, and a small payload traversing from low-Earth orbit toward the moon with zero propellant use. In this thesis, methods for sailcraft to increase altitude, the ...

On The Halo-Mass And Radial Scale Dependence Of The Lensing Is Low Effect, 2021 Swarthmore College

#### On The Halo-Mass And Radial Scale Dependence Of The Lensing Is Low Effect, J. U. Lange, A. Leauthaud, S. Singh, H. Guo, R. Zhou, Tristan L. Smith, F.-Y. Cyr-Racine

##### Physics & Astronomy Faculty Works

The canonical Lambda cold dark matter (ΛCDM) cosmological model makes precise predictions for the clustering and lensing properties of galaxies. It has been shown that the lensing amplitude of galaxies in the Baryon Oscillation Spectroscopic Survey (BOSS) is lower than expected given their clustering properties. We present new measurements and modelling of galaxies in the BOSS LOWZ sample. We focus on the radial and stellar mass dependence of the lensing amplitude mismatch. We find an amplitude mismatch of around 35 per cent when assuming ΛCDM with Planck Cosmological Microwave Background (CMB) constraints. This offset is independent of halo mass and ...

Deathtrap, 2021 Augustana College, Rock Island Illinois

#### Deathtrap, Blake Traylor

##### Vázquez-Valarezo Poetry Award

I could have titled this one "Bad Trip in an Elevator," but that would twist the poem away from its authenticity. You'll have to trust me on this one: this happened. Not in the usual sense, but in that fiction-is-truth-in-a-funhouse-mirror, postmodern Tim O'Brien sense. And hallucinogens were not involved, nor are they encouraged or condoned. (Do with that Wretched Passive Voice what you will.)

If the word "Deathtrap" didn't amuse me so much, I really could have run with the title "Tired." Or maybe "Very Tired" would have been better. And then there are always the big-hitters ...

The Magnetic Field Penetration Measurement Of Thin Film And Multilayered Superconductors For Srf Cavities, 2021 Old Dominion University

#### The Magnetic Field Penetration Measurement Of Thin Film And Multilayered Superconductors For Srf Cavities, Iresha Harshani Senevirathne, Jean Delayen

##### College of Sciences Posters

Radio Frequency (RF) Cavities are used in particle accelerators and they are typically formed from or coated with superconducting materials. High purity niobium is the material of choice for SRF cavities and niobium cavities operate at their theoretical field limits. SRF researchers have begun a significant R&D effort to develop alternative materials to continue to keep up with the demands of new accelerator facilities. To achieve high performance with high accelerating gradient, cavity material should have an ability to persist in superconducting state under high magnetic field without magnetic flux penetration through the cavity wall. Therefore, the magnetic field ...