Spin- and Momentum-Correlated Atom Pairs Mediated by Photon Exchange and Seeded by Vacuum Fluctuations.

Engineering pairs of massive particles that are simultaneously correlated in their external and internal degrees of freedom is a major challenge, yet essential for advancing fundamental tests of physics and quantum technologies. In this Letter, we experimentally demonstrate a mechanism for generating pairs of atoms in well-defined spin and momentum modes. This mechanism couples atoms from a degenerate Bose gas via a superradiant photon-exchange process in an optical cavity, producing pairs via a single channel or two discernible channels.

Emergence of Isotropy and Dynamic Scaling in 2D Wave Turbulence in a Homogeneous Bose Gas.

We realize a turbulent cascade of wave excitations in a homogeneous 2D Bose gas and probe on all relevant time and length scales how it builds up from small to large momenta, until the system reaches a steady state with matching energy injection and dissipation. This all-scales view directly reveals the two theoretically expected cornerstones of turbulence formation-the emergence of statistical momentum-space isotropy under anisotropic forcing and the spatiotemporal scaling of the momentum distribution at times before any energy is dissipated.

Observation of first and second sound in a BKT superfluid.

Superfluidity in its various forms has been of interest since the observation of frictionless flow in liquid helium II. In three spatial dimensions it is conceptually associated with the emergence of long-range order at a critical temperature. One of the hallmarks of superfluidity, as predicted by the two-fluid model and observed in both liquid helium and in ultracold atomic gases, is the existence of two kinds of sound excitation-the first and second sound.

Correlation between LGR5 stem cells and location of tumor as well as age, sex and metastasis in colon adenocarcinoma.

Purpose: G-protein receptors belong to a large family of receptors which includes more than 800 kinds. An interest for these receptors arose upon noticing their expression on skin, intestine and breast stem cells.

Methods: We examined the tissues of 53 patients who had been diagnosed with adenocarcinoma of the colon.

Excessive noise levels are noted in kindergarten classrooms in the island of Crete.

Ambient noise in classrooms may present a serious obstacle to the academic achievement of children. There is relatively little information on noise levels in teaching facilities in Greece and particularly in the island of Crete. The purpose of this study was to provide objective data on the internal noise levels inside kindergartens in Crete.

The cochlear implant programme in Crete: a nine year experience.

The aim of this study was to present data of the cochlear implant programme in Crete. Our series consists of 51 patients, 35 adults and 16 children, in a nine year period. The average age of our patients was 31 years (range from three to 68).

Benign paroxysmal positional vertigo: 10-year experience in treating 592 patients with canalith repositioning procedure.

Objective: To assess the long-term efficacy of canalith repositioning procedure (CRP) in the treatment of patients with benign paroxysmal positional vertigo (BPPV).

Background: Alternative theories for the pathophysiology of BPPV have been redefined in the past few years. CRP is considered to be the standard technique for its management.

Transtympanic iontophoresis of gadopentetate dimeglumine: Preliminary results.

Objective: We sought to demonstrate the feasibility of using iontophoresis to deliver pharmaceutical agents into the middle and inner ear for the treatment of middle and inner ear diseases, which is proved in this study by the successful iontophoresis of the ferromagnetic contrast agent gadopentetate dimeglumine. Study design and setting Eight rabbits were iontophoresed using gadopentetate dimeglumine solution 469 mg/mL. Then, all rabbits underwent magnetic resonance imaging for the detection of gadopentetate dimeglumine in the middle and inner ear structures.

Application of a ketogenic diet in children with autistic behavior: pilot study.

A pilot prospective follow-up study of the role of the ketogenic diet was carried out on 30 children, aged between 4 and 10 years, with autistic behavior. The diet was applied for 6 months, with continuous administration for 4 weeks, interrupted by 2-week diet-free intervals. Seven patients could not tolerate the diet, whereas five other patients adhered to the diet for 1 to 2 months and then discontinued it.

Transtympanic iontophoresis with a biocompatible paramagnetic solution at MR imaging: experimental feasibility study in rabbits.

Purpose: To determine the feasibility of transtympanic iontophoresis in experimental animals with a paramagnetic contrast agent at magnetic resonance (MR) imaging.

Materials And Methods: Optimal MR sequence parameters and appropriate paramagnetic ion concentrations of a water and gadopentetate dimeglumine solution were initially assessed with phantoms. Iontophoresis was performed in left ears of five rabbits after the external auditory canals were filled with a solution of water and gadopentetate dimeglumine of optimal concentration, and right ears were used as controls.

The role of laser assisted tympanostomy (LAT) in treating allergic children with chronic serous otitis media.

Objectives: To assess various prognostic factors influencing the outcome in paediatric patients with serous otitis media, who have undergone laser assisted tympanostomy without ventilation tube placement. Emphasis is given to children with allergies who underwent the procedure.

Method: Laser assisted tympanostomy was performed on a total of 130 ears (92 individuals) with chronic otitis media with effusion.