27,385 research outputs found
Program to produce horizontal stereographic print maps from Nimbus HRIR data
Computer program is written to display Nimbus high resolution infrared radiometer data in optimum form for experiment usage. Program produces three maps for Nimbus experimental data. Functions of program are to process data and prepare print maps from modified temperature measurements
Injector has no backsplash
Passages of injector have been modified to eliminate backsplashing. All fluid is expelled in downstream spray fan. Result is that face of injector is completely free of liquid obstructions
Hydraulic characteristics of flow through miniature slits
Hydraulic characteristics of micro-orifices arrayed in close proximity across the face of a liquid fuel injector are studied. Effects of geometry and flow variables on discharge coefficients and flow regimes are determined, as well as visible characteristics of the emerging liquid streams
Investigation of high frequency oscillations in the OV102 elevon actuation subsystems using continuous system modeling program simulation
Two theories emerged as the cause of undesired oscillations at frequencies between 40 and 60 Hz in the Orbiter Vehicle inboard and outboard elevon actuation subsystems during hardware testing. Both the "hardover feedback" and "deadspace" theories were examined using continuous system modeling program simulation. Results did not support the "hardover feedback" theory but showed that deadspace in the torque feedback spring connections to the servospools must be considered to be a possible cause of the oscillations. Further investigation is recommended
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Number of Pages: 2Integrative BiologyGeological Science
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Number of Pages: 2Integrative BiologyGeological Science
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Heavy Quark Symmetry Predictions for Weakly Bound B-Meson Molecules
Recently the Belle collaboration discovered two resonances, Zb(10610) and
Zb(10650), that lie very close to the B\bar{B}^* and B^*\bar{B}^* thresholds,
respectively. It is natural to suppose that these are molecular states of
bottom and anti-bottom mesons. Under this assumption, we introduce an effective
field theory for the Zb(10610) and Zb(10650), as well as similar unobserved
states that are expected on the basis of heavy quark spin symmetry. The
molecules are assumed to arise from short-range interactions that respect heavy
quark spin symmetry. We use the theory to calculate line shapes in the vicinity
of B^{(*)}\bar{B}^{(*)} thresholds as well as two-body decay rates of the new
bottom meson bound states. We derive new heavy quark spin symmetry predictions
for the parameters appearing in the line shapes as well as the total and
partial widths of the states.Comment: 17 pages, 2 figure
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