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Solar variability observed through changes in solar limb-darkening function and mean diameter. Final report, February 1, 1987--August 31, 1993

Description: The advantages of a dedicated, ground-based observatory over measurements from spacecraft are its relative adaptability, ease of maintenance, and low cost. However, groundbased observations must contend with problems introduced by observing through the Ear-th`s atmosphere and by changes in the long-term stability of the observing instrument. Both of these problems have been addressed at SCLERA and currently pose no limitation of solar diameter measurements at the parts-per-n-tillion level. The … more
Date: May 31, 1995
Creator: Hill, H.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

What have we learned about the solar interior from solar oscillations?

Description: After a brief review of the discovery and properties of solar oscillations, I summarize the significant advances in our knowledge of the Sun`s interior structure achieved by using solar oscillation frequency data. I discuss the surprising solar interior rotation profile; the precise determination of the convection zone depth; the convection zone helium abundance; evidence for diffusive settling of helium during the Sun`s 4.5 billion year lifetime; and the Sun`s central structure and implication… more
Date: December 31, 1995
Creator: Guzik, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies

Description: In several areas around the world, clean water is a precious asset that at anytime, and mainly due to circumstances of weather and climate, can become scarce. Mainly in the dry and remote places, people suffer with lack of water. A solution for this suffering can be a water desalination system, which makes water potable and usable for industry. That solution inherently, brings the problem of power requirement, which is sometimes arduous to accomplish in such remote areas of difficult access and… more
Date: May 2014
Creator: Mira, Sebastião Bittencourt de
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

[News Script: TCU]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a broadcast news story.
Date: January 1, 1966
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

Connection to Nature

Description: Lesson plan containing a collection of activities and resources regarding connections to nature that meet state education standards and national sustainability standards for the kindergarten grade level.
Date: August 6, 2014
Creator: Treadway, Heather
Item Type: Refine your search to only Text
Partner: UNT Office of Sustainability
open access

Measuring solar abundances

Description: This is the rapporteur paper of Working Group 2 on Measuring Solar Abundances. The working group presented and discussed the different observations and methods for obtaining the elemental and isotopic composition of the Sun, and critically reviewed their results and the accuracies thereof. Furthermore, a few important yet unanswered questions were identified, and the potential of future missions to provide answers was assessed.
Date: January 1, 2001
Creator: Reisenfeld, D. B. (Daniel B.); Von Steiger, R. (Rudolf); Vial, J.-C. (Jean-Claude); Bochsler, P.; Chaussidon, M.; Cohen, C. M. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Southern Great Plains Newsletter, September 2010

Description: Monthly newsletter of Argonne National Laboratory. This month's issue contains the following articles: (1) Scientists convene at SGP site for complex convective cloud experiment; (2) VORTEX2 spins down; (3) Sunphotometer supports SPARTICUS (a Sun and Aureole Measurement imaging sunphotometer) campaign and satellite validation studies; and (4) Ceilometer represents first deployment of new ground-based instruments from Recovery Act.
Date: September 2010
Creator: Argonne National Laboratory
Item Type: Refine your search to only Journal/Magazine/Newsletter
Partner: UNT Libraries Government Documents Department
open access

[Sun and Star 1995 Fact Sheet]

Description: A fact sheet for the Sun & Star Japanese cultural festival that list the events, activities, purpose, funders and more for the festival. The festival notes a visual arts exhibit that will preview Japanese art forms from the early periods.
Date: October 24, 1995
Creator: Sun and Star
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Delta Scuti stars: Theory

Description: The purpose of asteroseismology is not only to derive the internal structure of individual stars from their observed oscillation frequencies, but also to test and extend one`s understanding of the physics of matter under the extremes of temperature, density, and pressure found in stellar interiors. In this review, the author hopes to point out what one can learn about the Sun by studying {delta} Scuti stars, as well as what one can learn about stars more massive or evolved than the Sun. He disc… more
Date: March 1, 1998
Creator: Guzik, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Reheating metastable O'Raifeartaigh models

Description: In theories with multiple vacua, reheating to a temperature greater than the height of a barrier can stimulate transitions from a desirable metastable vacuum to a lower energy state. We discuss the constraints this places on various theories and demonstrate that in a class of supersymmetric models this transition does not occur even for arbitrarily high reheating temperature.
Date: November 1, 2006
Creator: Fox, Patrick; Craig, Nathaniel J.; Fox, Patrick J. & Wacker, Jay G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SunLab: Concentrating Solar Power Program Overview

Description: DOE's Concentrating Solar Power (CSP) program is collaborating with its partners in the private sector to develop two new solar technologies -- power towers and dish/engines -- to meet the huge commercial potential for solar power. Concentrating solar power plants produce electric power by first converting the sun's energy into heat, and then to electricity in a conventional generator.
Date: November 24, 1998
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

State-of-the-Art Solar Simulator Reduces Measurement Time and Uncertainty (Fact Sheet)

Description: One-Sun Multisource Solar Simulator (OSMSS) brings accurate energy-rating predictions that account for the nonlinear behavior of multijunction photovoltaic devices. The National Renewable Energy Laboratory (NREL) is one of only a few International Organization for Standardization (ISO)-accredited calibration labs in the world for primary and secondary reference cells and modules. As such, it is critical to seek new horizons in developing simulators and measurement methods. Current solar simulat… more
Date: April 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Global Solar UV Index

Description: The Global Solar UV Index (UVI) described in this document is a simple measure of the UV radiation level at the Earth’s surface and an indicator of the potential for skin damage. It serves as an important vehicle to raise public awareness and to alert people about the need to adopt protective measures when exposed to UV radiation.
Date: 2002
Creator: World Health Organization
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

CMEs at High Northern Latitudes During Solar Maximum : Ulysses and SOHO Correlated Observations.

Description: From September through November 2001, Ulysses was almost continuously immersed in polar coronal hole (CH) flow during its northern polar pass of the Sun. For much of this time, the flow was fast (> 700 km/s) and steady, quite similar to the steady unstructured flow observed during Ulysses first polar orbit near solar minimum. During the three months Ulysses transited the northern polar CH it observed 5 coronal mass ejections (CMEs). Of these, two were clearly over-expanding and two were at l… more
Date: January 1, 2002
Creator: Reisenfeld, D. B. (Daniel B.); Gosling, J. T. (John Thomas); Steinberg, J. T (John T.); Riley, P. (Pete); Forsyth, R. J. & St. Cyr, Orville Chris,
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Limits on a muon flux from neutralino annihilations in the Sun with the IceCube 22-string detector

Description: A search for muon neutrinos from neutralino annihilations in the Sun has been performed with the IceCube 22-string neutrino detector using data collected in 104.3 days of live-time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of captured neutralinos in the Sun and converted to limits on the WIMP-proton cross-sections for WIMP masses in the range 250-5000 GeV. These results are the most stringent limits to… more
Date: April 28, 2009
Creator: Collaboration, IceCube & Klein, Spencer
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

[Sunrise or Sunset Over Water]

Description: Photograph of a sunrise or a sunset over a body of water. A small part of the coastline is visible on the right side of the print. The photo has a large cream colored border.
Date: [1910..]
Creator: Williams, Byrd M. (Byrd Moore), Jr.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

Hat

Description: Hat of yellow straw. The woven straw hat has a boxy, cylindrical crown, flat on top. The brim is also of yellow woven straw, and turns up to to vertical very close to the crown forming a high "wall" around the crown. Crown is unlined, with a pink grosgrain ribbon inside around the base of the crown. Sewn to inner ribbon band is designer's label: "Frank Olive". Measurements: 24 cm. front to back; 25 cm. side to side; 14 cm. from base of brim to top of crown; Brim rises 8.5 cm from base to top … more
Date: 1980/1989
Creator: Olive, Frank
Item Type: Refine your search to only Physical Object
Partner: UNT College of Visual Arts + Design
open access

Sun (1966): Eight Poems in One Movement for Solo Voice and Orchestra By Ned Rorem: Background, Analysis, and Performance Guide

Description: The purpose of the document is to present Ned Rorem’s Sun (1966): Eight Poems in One Movement for Solo Voice and Orchestra. the eight songs are “To the Sun,” “Sun of the Sleepless,” “Dawn,” “Day,” “Catafalque,” “Full Many a Glorious Morning,” “Sundown Lights,” and “From What Can I Tell My Bones?” the document is divided into four main chapters: 1) Background; 2) Poet and Poem Background; 3) Musical Analysis; 4) Performance Guide. Chapter 1 contains biographical information on Ned Rorem, and bas… more
Date: May 2012
Creator: Jung, Soohee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Using solar oscillations to constrain the equation of state and low-temperature opacities

Description: Because thousands of solar P-mode oscillation frequencies have been measured to high accuracy, direct comparisons between calculated and observed frequencies are an excellent means of testing solar interior physics. Here we compare observed and calculated nonadiabatic frequencies of solar models that include diffusive settling of helium and heavier elements. We consider the effects of low-temperature opacities, equation of state, and a nonequilibrium radiation diffusion treatment on solar struc… more
Date: December 31, 1995
Creator: Guzik, J.A.; Cox, A.N. & Swenson, F.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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