In searching for the neutrinoless double-beta decay of $^{76}$Ge GERmanium Detector Array (GERDA) experiment at INFN Laboratori Nazionali del Gran Sasso has achieved an unprecedented low background well below 10$^{-3}$ cts/(keV$\cdot$kg$\cdot$yr) in region interest. It taken advantage first realization a novel shielding concept based on large cryostat filled with liquid noble gas that is immers...

To examine the reported beneficial effect of zinc in rheumatoid arthritis, rheumatoid synovial tissue has been maintained in vitro in non-proliferative culture with or without zinc sulphate in the culture medium. Alkaline phosphatase activity was measured by microdensitometry of the cytochemical reaction in cryostat sections; the activity in blood vessels was measured separately from that in th...

We report on the trapping of single $\mathrm{Rb}$ atoms in tunable arrays optical tweezers a cryogenic environment at approximately 4 K. describe design and construction experimental apparatus, based custom-made UHV-compatible closed-cycle cryostat with access. demonstrate tweezers, lifetimes up to 6000 s, despite fact that vacuum system has not been baked out. These results open way large exte...

We study the transfer of spectral weight in the optical spectra of a strongly correlated electron system as a function of temperature and interaction strength. Within a dynamical mean field theory of the Hubbard model that becomes exact in the limit of large lattice coordination, we predict an anomalous enhancement of spectral weight as a function of temperature in the correlated metallic state...

We describe and demonstrate the automated operation of a novel cryostat design that is capable of maintaining an unloaded base temperature of less than 300 mK continuously, without the need to recycle the gases within the final cold head, as is the case for conventional single shot sorption pumped (3)He cooling systems. This closed dry system uses only 5 l of (3)He gas, making this an economica...

PURPOSE To study the corneal absorption in the far ultraviolet (UV) region between 260 and 190 nm. METHODS Thirty-four corneal samples of thickness near 20 microns were obtained from 18 porcine corneas and six human corneas with a microtome-cryostat. The authors conducted absorbance measurements of the sectioned corneal samples supported by two UV optical windows from 350 to 190 nm using a du...