283 research outputs found
Are SRI Funds More Resilient towards the Global Financial Crisis?
This paper compares the resilience of Socially Responsible Investment (SRI) funds with that of conventional funds towards the global financial crisis by using an event study methodology. Taking the bankruptcy of Lehman Brothers as the particular event, we estimated the average cumulative abnormal returns of both SRI funds and conventional funds. Our results show that SRI funds are more resilient to such a shock. Similar results are obtained by an estimation with a market model that accounts for ARCH effects.SRI, Event study, Financial crisis
Stripe antiferromagnetic correlations in LaFeAsO1-xFx probed by 75As NMR
The anisotropy of the nuclear spin-lattice relaxation rate of
As was investigated in the iron-based superconductor
LaFeAs(OF) ( and 0.14) as well as LaFeAsO. While
the temperature dependence of the normal-state in the superconducting
(SC) is different from that in the SC , their anisotropy
of , in
the normal state is almost the same ( 1.5). The observed anisotropy is
ascribable to the presence of the local stripe correlations with
or . In contrast, is isotropic and is approximately 1 in
the overdoped sample, where superconductivity is almost suppressed.
These results suggest that the presence of the local stripe correlations
originating from the nesting between hole and electron Fermi surfaces is linked
to high- superconductivity in iron pnictides.Comment: 4 pages, 3 figures, Accepted for publication in Phys. Rev.
^{31}P and ^{75}As NMR evidence for a residual density of states at zero energy in superconducting BaFe_2(As_{0.67}P_{0.33})_2
^{31}P and ^{75}As NMR measurements were performed in superconducting
BaFe_2(As_{0.67}P_{0.33})_2 with T_c = 30 K. The nuclear-spin-lattice
relaxation rate T_1^{-1} and the Knight shift in the normal state indicate the
development of antiferromagnetic fluctuations, and T_1^{-1} in the
superconducting (SC) state decreases without a coherence peak just below T_c,
as observed in (Ba_{1-x}K_{x})Fe_2As_2. In contrast to other iron arsenide
superconductors, the T_1^{-1} \propto T behavior is observed below 4K,
indicating the presence of a residual density of states at zero energy. Our
results suggest that strikingly different SC gaps appear in
BaFe_2(As_{1-x}P_{x})_2 despite a comparable T_c value, an analogous phase
diagram, and similar Fermi surfaces to (Ba_{1-x}K_{x})Fe_2As_2.Comment: 4 pages, 5 figure
Energy Production from Fish Waste in Large-scale Anaerobic Digestion
Poster Presentatio
A Case of Abdominal Abscess in Crohn's Disease: Successful Endoscopic Demonstration of an Obscure Enteric Fistula by Dye Injection via a Percutaneous Drainage Catheter
Abdominal and pelvic abscesses occur in approximately 10–30% of Crohn's disease patients during the course of the disease; most of these abscesses have an enteric communication. For this condition, percutaneous abscess drainage (PAD) rather than emergency surgery has recently been recognized as a valuable procedure for initial treatment. However, in cases wherein the abscess is accompanied by an enteric fistula, the recurrence of abscess might be inevitable without the management of the enteric fistula. Therefore, demonstration and evaluation of the enteric fistula is essential to prevent abscess recurrence; however, this is not necessarily a simple procedure. Here, we report abdominal abscess accompanied by a rectal fistula in a patient with Crohn's disease; this condition was successfully treated by PAD. Furthermore, PAD was also useful in identifying the fistula by colonoscopy involving dye injection via the drainage catheter. To our knowledge, no previous literature has reported the use of dye injection via the drainage catheter for identifying a fistula during endoscopic examination. We present here the radiographic, sonographic, and endoscopic findings of this case
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