274,719 research outputs found
Li Mengjing, Violin
Violin Sonata no. 1 in G minor / J. S. Bach; Violin Concerto No. 4 in D major, K. 218 / W.A. Mozart; Violin Concerto in D minor, Op. 47 / J. Sibelius; Polonaise Brillante in A major, Op. 21 / H. Wieniawsk
Capstone 2019 Art and Art History Senior Projects
This booklet profiles Art Senior Projects by Angelique J. Acevedo, Arin Brault, Bailey Harper, Sue Holz, Yirui Jia, Jianrui Li, Annora B. Mack, Emma C. Mugford, Inayah D. Sherry, Jacob H. Smalley, Laura Grace Waters and Laurel J. Wilson.
This booklet profiles Art History Senior Projects by Gabriella Bucci, Melissa Casale, Bailey Harper, Erin O\u27Brien and Laura Grace Waters
The Li Overabundance of J37: Diffusion or Accretion?
In September 2002 the discovery of a super Li-rich F-dwarf (J37) in NGC 6633,
an iron poor analogue of the better studied Hyades and Praecepe open clusters,
was announced. This unique star was thought to be the smoking gun for the
action of diffusion, models of which predict a narrow "Li-peak" at
approximately the correct temperature. However, with more detailed studies into
J37s abundance pattern this star provides firm evidence for the accretion of
planetesimals or other material from the circumstellar environment of new born
stars.
Thanks to the specific predictions made about the behaviour of Be abundances,
(the most striking of which being no Be in super-Li-rich dwarfs subject to
diffusion) the opposing diffusion/accretion predictions can be tested.
Initial modelling of the Be line indicates that J37 is as Be rich as it is Li
rich; log N(Be) = 2.25 +/- 0.25, and so is broadly consistent with an
accretion-fuelled enhancement. However, that both Li and Be are enhanced by
much more than the iron-peak elements (as determined in previous studies)
suggests that diffusion also plays a role in increasing the abundances of Li
and Be specifically.
Furthermore, a new data set from the UVES/UT2 combination has allowed the
elemental abundance of Iron to be measured, and the set of preliminary stellar
parameters determined; Teff ~ 7340 K, log g ~ 4.1, microturbulence ~ 4.3 km/s,
[Fe/H] ~ 0.50. This again provides distinct evidence for the effects of
accretion in J37 and requires a new synthesis of the Be doublet.Comment: 5 pages, 2 figures. Poster presented at IAU Symposium 224 "The A Star
Puzzle", 7-13 July 2004, Poprad, Slovaki
Isomorphisms and traversability of directed path graphs
The concept of a line digraph is generalized to that of a directed path graph. The directed path graph \forw P_k(D) of a digraph is obtained by representing the directed paths on vertices of by vertices. Two vertices are joined by an arc whenever the corresponding directed paths in form a directed path on vertices or form a directed cycle on vertices in . In this introductory paper several properties of \forw P_3(D) are studied, in particular with respect to isomorphism and traversability. In our main results, we characterize all digraphs with \forw P_3(D)\cong D, we show that \forw P_3(D_1)\cong\forw P_3(D_2) ``almost always'' implies , and we characterize all digraphs with Eulerian or Hamiltonian \forw P_3-graphs
Indefinite survival of rat islet allografts following infusion of donor bone marrow without cytoablation
We have tested the effect of donor bone marrow cell (DBMC) infusion on the survival of pancreatic islet allografts in the rat, without the use of cytoablative recipient conditioning. Lewis and diabetic Brown Norway rats were used as donors and recipients, respectively. Donor islets were placed beneath the left renal capsule. Infusion of DBMC and temporary immunosuppression followed by delayed islet transplantation resulted in indefinite survival of all islet grafts (MST >180 days). Control animals demonstrated recurrent hyperglycemia (islet allografts rejection). Donor bone marrow derived cells were detected in the spleen and cervical lymph nodes of BN recipients of LEW bone marrow but not in the recipients of islet transplants alone. Second set full thickness skin grafts were performed in normal BN and in recipients of a previously successful ITX. Donor specific skin grafts were accepted in the animals that had received DBMC 40 days before the islet allograft, while animals receiving DBMC at the time of the islet allograft rejected the donor specific skin graft similarly to the controls. However, these animals did not reject a second set donor-specific islet transplant. The results indicate that radiation conditioning of the recipients was not necessary to induce microchimerism and graft acceptance in this rodent model of islet allotransplantation
Propagation of Bessel beams from a dielectric to a conducting medium
Recently, the use of Bessel beams in evaluating the possibility of using them
for a new generation of GPR (ground penetrating radar) systems has been
considered. Therefore, an analysis of the propagation of Bessel beam in
conducting media is worthwhile. We present here an analysis of this type.
Specifically, for normal incidence we analyze the propagation of a Bessel beam
coming from a perfect dielectric and impinging on a conducting medium, i.e. the
propagation of a Bessel beam generated by refracted inhomogeneous waves. The
remarkable and unexpected result is that the incident Bessel beam does not
change its shape even when propagating in the conducting medium.Comment: To be publishe
MengJing Li, Violin
Violin Concerto in D major, Op. 35 / Tchaikovsky; Sonata in A major for Violin and Piano / CĂ©sar Franck; Piano Quintet in E-flat major, Op. 44 / Robert Schuman
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