44 research outputs found
Demonstration of the temporal matter-wave Talbot effect for trapped matter waves
We demonstrate the temporal Talbot effect for trapped matter waves using
ultracold atoms in an optical lattice. We investigate the phase evolution of an
array of essentially non-interacting matter waves and observe matter-wave
collapse and revival in the form of a Talbot interference pattern. By using
long expansion times, we image momentum space with sub-recoil resolution,
allowing us to observe fractional Talbot fringes up to 10th order.Comment: 17 pages, 7 figure
The state of the Martian climate
60°N was +2.0°C, relative to the 1981–2010 average value (Fig. 5.1). This marks a new high for the record. The average annual surface air temperature (SAT) anomaly for 2016 for land stations north of starting in 1900, and is a significant increase over the previous highest value of +1.2°C, which was observed in 2007, 2011, and 2015. Average global annual temperatures also showed record values in 2015 and 2016. Currently, the Arctic is warming at more than twice the rate of lower latitudes
Mid-rapidity anti-proton to proton ratio from Au+Au collisions at GeV
We report results on the ratio of mid-rapidity anti-proton to proton yields
in Au+Au collisions at \rts = 130 GeV per nucleon pair as measured by the
STAR experiment at RHIC. Within the rapidity and transverse momentum range of
and 0.4 1.0 GeV/, the ratio is essentially independent of
either transverse momentum or rapidity, with an average of for minimum bias collisions. Within errors, no
strong centrality dependence is observed. The results indicate that at this
RHIC energy, although the -\pb pair production becomes important at
mid-rapidity, a significant excess of baryons over anti-baryons is still
present.Comment: 5 pages, 3 figures, accepted by Phys. Rev. Let
Phlegmonous Gastritis after Endoscopic Submucosal Dissection for early Gastric Cancer
A 74-year-old man with diabetic nephropathy developed epigastric pain and high
fever after endoscopic submucosal dissection (ESD) for early gastric cancer.
Gastroscopy, endoscopic ultrasonography and computed tomography showed
ulceration with a purulent lake, thickened entire gastric mucosal layers
suggesting focal abscess formation, leading to the diagnosis of phlegmonous
gastritis. He underwent total gastrectomy as an emergency. Histological findings
of the resected specimen showed severe inflammatory cell infiltration and
multiple focal abscess formation spreading to the entire gastric wall. In
patients with poorer general conditions, phlegmonous gastritis should be
considered as a serious complication after ESD, indicating a requirement of
antibiotic prophylaxis