55,574 research outputs found
Knowles, Abiather J.
No full textCarte de Visite of Captain Abiather J. Knowles, Company D; From Hosmer-Low Collectionhttps://digitalmaine.com/arc_civilwarportraits/1656/thumbnail.jp
Knowles, Abiather J.
No full textCarte de Visite of Captain Abiather J. Knowles, Company D; From Hosmer-Low Collectionhttps://digitalmaine.com/arc_civilwarportraits/1656/thumbnail.jp
Monoposto racecar wheel aerodynamics: investigation of near-wake structure and support-sting interference
No full textMonoposto racecar development is routinely carried out using wheels supported not by the car
suspension but by individual, externally-mounted stings. The interference effect of these stings
was acknowledged but unquantified in the existing literature. Appraisal of the literature has
found that the structure of a wheel wake was not understood, rendering it difficult to assess the
support sting interference. These two issues were thus jointly addressed using experimental and
computational methods.
The two phases of this project each tested a different industrially-representative racecar wheel
model. Phase One investigated a single wheel and sting combination, whilst Phase Two extended
the work to include two further stings and a model racecar. Non-intrusive velocity measurements
were made in the near wakes of the various combinations to extract vertical planes, perpendicular
to the tunnel freestream.
The measurements made behind the isolated wheels were used to investigate the main flow
features of the wake. The flow surrounding an unsupported wheel was established computationally
and used to evaluate the interference effects of the support sting. Different wheel support
methods (three stings and the car suspension) were used to provide further insight into the sting
interference effects and also the impact of sting design on those effects. Testing with and without
the model racecar allowed evaluation of its effect on the wheel wake and sting interference.
The main characteristics of the near-wake of an isolated wheel rotating in ground contact are
proposed from analysis of the data generated in this study. A simplified model of the trailingvortex
system induced in the wake of such a wheel is proposed to clarify contradictory literature.
The specific interference effects of a wheel support sting are proposed with reference to the main
characteristics of the wake. The mechanisms behind these effects are, where possible, identified
and presented. The main impact of the support sting, and thus the root of several of the observed
effects, is the modification of the axial flow through the wheel.
The main effects of the presence of the car on the near-wake are proposed alongside the observation
that the wake structure is not fundamentally different to that of an isolated wheel. The
proposed sting interference effects are also observed in the presence of the car, albeit at a reduced
level
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Risk assessment and management in West Hampshire NHS Trust: a report of an ongoing collaborative project
No full textMeasurement of the B0–B0 oscillation frequency Δmd with the decays B0→D−π+ and B0→ J/ψK∗0
No full textThe B
0
–B
0
oscillation frequency Δmd is measured by the LHCb experiment using a dataset corresponding
to an integrated luminosity of 1.0 fb−1
of proton–proton collisions at √
s = 7 TeV, and is found to be
Δmd
=0.5156±0.0051 (stat.)±0.0033 (syst.) ps−1
. The measurement is based on results from analyses
of the decays B
0
→ D
−π
+ (D
−
→ K
+π
−π
−) and B
0
→ J/ψK
∗0
(J/ψ →μ
+μ
−,K
∗0
→ K
+π
−) and
their charge conjugated modes
Homegoing Services for Ruth Ella Knowles Hendree
No full textFuneral program for Ruth Ella Knowles Hendree, born May 12, 1925 and died August 17, 2007. The funeral was held Tuesday, August 21, 2007 at O. J. Carter Taylor Memorial Chapel, officiated by Rev. Dr. Paul D. Stevens, Sr. Funeral arrangements were made through Carter-Taylor-Williams Mortuary and she was buried in Meadowlawn Memorial Park in San Antonio, Texas
Search for the rare decays J/y -> D-s(-) rho(+) and J/psi -> <(D)over bar(0)<(K)over bar*(0)
No full textA search for the rare decays of J/psi -> D-S(-) rho(+) + c.c. and J/psi -> D-S(-)rho(+) + c.c.) <1.3 x 10(-5) and beta(J/psi -
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
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