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961
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263
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233
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8,118 Matching Results
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[Yakima Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Yakima quadrangle in Washington.
Date:
1981
Creator:
High Life Helicopters, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
Yantis Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24,000
Date:
1981
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Yearly average performance of the principal solar collector types
The results of hour-by-hour simulations for 26 meteorological stations are used to derive universal correlations for the yearly total energy that can be delivered by the principal solar collector types: flat plate, evacuated tubes, CPC, single- and dual-axis tracking collectors, and central receiver. The correlations are first- and second-order polynomials in yearly average insolation, latitude, and threshold (= heat loss/optical efficiency). With these correlations, the yearly collectible energy can be found by multiplying the coordinates of a single graph by the collector parameters, which reproduces the results of hour-by-hour simulations with an accuracy (rms error) of 2% for flat plates and 2% to 4% for concentrators. This method can be applied to collectors that operate year-around in such a way that no collected energy is discarded, including photovoltaic systems, solar-augmented industrial process heat systems, and solar thermal power systems. The method is also recommended for rating collectors of different type or manufacturer by yearly average performance, evaluating the effects of collector degradation, the benefits of collector cleaning, and the gains from collector improvements (due to enhanced optical efficiency or decreased heat loss per absorber surface). For most of these applications, the method is accurate enough to replace a system simulation.
Date:
January 1, 1981
Creator:
Rabl, A.
Object Type:
Report
System:
The UNT Digital Library
Yuba Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date:
1981
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Zeta-spectroscopy beyond 40 GeV
The zeta-family of bound states, formed by the anticipated t-quark and its antiquark, is discussed. The quantitative connection between the zeta-spectroscopy and the short distance behavior of the quark-antiquark potential is examined. It is pointed out that the next quarkonium system will lead to an accurate determination of the QCD scale parameter ..lambda... Weak zeta-decays are briefly considered.
Date:
January 1, 1981
Creator:
Buchmueller, W.
Object Type:
Article
System:
The UNT Digital Library
ZT-40M system design, modification, and installation
ZT-40 is a reversed field pinch experiment which had been operated as originally designed, with a ceramic discharge tube until November 1980. At that time, the experiment was shut down for major modifications. This paper will describe these modifications in general and discuss in detail the design of the energy system.
Date:
January 1, 1981
Creator:
Hammer, C. F.
Object Type:
Article
System:
The UNT Digital Library