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Showing 13 to 24 of 388 entries
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Ions in water: the microscopic structure of concentrated hydroxide solutions.

The Journal of chemical physics

Imberti S, Botti A, Bruni F, Cappa G, Ricci MA, Soper AK.
PMID: 16161599
J Chem Phys. 2005 May 15;122(19):194509. doi: 10.1063/1.1899147.

Neutron-diffraction data on aqueous solutions of hydroxides, at solute concentrations ranging from 1 solute per 12 water molecules to 1 solute per 3 water molecules, are analyzed by means of a Monte Carlo simulation (empirical potential structure refinement), in...

COMT inhibition with tolcapone in the treatment algorithm of patients with Parkinson's disease (PD): relevance for motor and non-motor features.

Neuropsychiatric disease and treatment

Antonini A, Abbruzzese G, Barone P, Bonuccelli U, Lopiano L, Onofrj M, Zappia M, Quattrone A.
PMID: 18728767
Neuropsychiatr Dis Treat. 2008 Feb;4(1):1-9. doi: 10.2147/ndt.s2404.

Levodopa is the most effective treatment in Parkinson's disease and the association with COMT inhibitors widens its plasma bioavailability and effectiveness. Tolcapone is a potent COMT inhibitor whose utilization in PD is limited due to safety concerns on liver...

Nanosecond single-photon timing with InGaAs/InP photodiodes.

Optics letters

Zappa F, Lacaita A, Cova S, Webb P.
PMID: 19844465
Opt Lett. 1994 Jun 01;19(11):846-8. doi: 10.1364/ol.19.000846.

We demonstrate that separate absorption and multiplication InGaAs/InP avalanche photodiodes can work biased above the breakdown voltage and detect the arrival time of single photons with 1-ns resolution and a noise-equivalent power of 1 x 10(-14) W/Hz((1/2)) at 150...

Design and Characterization of Hand Module for Whole-Arm Rehabilitation Following Stroke.

IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division

Masia L, Krebs HI, Cappa P, Hogan N.
PMID: 20228969
IEEE ASME Trans Mechatron. 2007 Aug 01;12(4):399-407. doi: 10.1109/TMECH.2007.901928.

In 1991, a novel robot named MIT-MANUS was introduced as a test bed to study the potential of using robots to assist in and quantify the neurorehabilitation of motor function. It introduced a new modality of therapy, offering a...

Avalanche photodiodes and quenching circuits for single-photon detection.

Applied optics

Cova S, Ghioni M, Lacaita A, Samori C, Zappa F.
PMID: 21085320
Appl Opt. 1996 Apr 20;35(12):1956-76. doi: 10.1364/AO.35.001956.

Avalanche photodiodes, which operate above the breakdown voltage in Geiger mode connected with avalanche-quenching circuits, can be used to detect single photons and are therefore called singlephoton avalanche diodes SPAD's. Circuit configurations suitable for this operation mode are critically...

Fully-integrated CMOS single photon counter.

Optics express

Tisa S, Tosi A, Zappa F.
PMID: 19532523
Opt Express. 2007 Mar 19;15(6):2873-87. doi: 10.1364/oe.15.002873.

Traditionally, Single Photon Avalanche Diodes (SPADs) are fabricated using dedicated processes that require additional technological steps when compared to standard CMOS. Instead, this paper presents the design of SPADs that attain good performances, by using a standard high-voltage CMOS...

Low-noise low-jitter 32-pixels CMOS single-photon avalanche diodes array for single-photon counting from 300 nm to 900 nm.

The Review of scientific instruments

Scarcella C, Tosi A, Villa F, Tisa S, Zappa F.
PMID: 24387425
Rev Sci Instrum. 2013 Dec;84(12):123112. doi: 10.1063/1.4850677.

We developed a single-photon counting multichannel detection system, based on a monolithic linear array of 32 CMOS SPADs (Complementary Metal-Oxide-Semiconductor Single-Photon Avalanche Diodes). All channels achieve a timing resolution of 100 ps (full-width at half maximum) and a photon...

Draft Genome Sequence of Clostridium tyrobutyricum Strain UC7086, Isolated from Grana Padano Cheese with Late-Blowing Defect.

Genome announcements

Bassi D, Fontana C, Gazzola S, Pietta E, Puglisi E, Cappa F, Cocconcelli PS.
PMID: 23950123
Genome Announc. 2013 Aug 15;1(4). doi: 10.1128/genomeA.00614-13.

Clostridium tyrobutyricum is considered the main agent of late-blowing defect in the production of hard cheese. Here, we described the draft genome sequences and annotation of C. tyrobutyricum strain UC7086, which was isolated from Grana Padano cheese with blowing...

Is routine ultrasound examination of the gallbladder justified in critical care patients?.

Critical care research and practice

Myrianthefs P, Evodia E, Vlachou I, Petrocheilou G, Gavala A, Pappa M, Baltopoulos G, Karakitsos D.
PMID: 22649716
Crit Care Res Pract. 2012;2012:565617. doi: 10.1155/2012/565617. Epub 2012 May 09.

Objective. We evaluated whether routine ultrasound examination may illustrate gallbladder abnormalities, including acute acalculous cholecystitis (AAC) in the intensive care unit (ICU). Patients and Methods. Ultrasound monitoring of the GB was performed by two blinded radiologists in mechanically ventilated...

Femoro-acetabular impingement: what the general radiologist should know.

La Radiologia medica

Aliprandi A, Di Pietto F, Minafra P, Zappia M, Pozza S, Sconfienza LM.
PMID: 24277505
Radiol Med. 2014 Feb;119(2):103-12. doi: 10.1007/s11547-013-0314-7. Epub 2013 Nov 26.

Femoro-acetabular impingement (FAI) is a common condition in young active subjects, which can lead to the development of early osteoarthritis if not correctly diagnosed. Imaging evaluation of FAI, mainly based on plain film and magnetic resonance evaluation, must be...

Thermally oxidized zinc oxide nanowires for use as chemical sensors.

Nanotechnology

Zappa D, Comini E, Sberveglieri G.
PMID: 24113169
Nanotechnology. 2013 Nov 08;24(44):444008. doi: 10.1088/0957-4484/24/44/444008. Epub 2013 Oct 10.

Zinc oxide (ZnO) mat-based conductometric devices were fabricated using a thermal oxidation technique. A metallic zinc layer was deposited on the alumina transducer and then oxidized in a controlled atmosphere, in order to obtain ZnO nanostructures. Two different batches...

Surface chemistry of SnO2 nanowires on Ag-catalyst-covered Si substrate studied using XPS and TDS methods.

Nanoscale research letters

Sitarz M, Kwoka M, Comini E, Zappa D, Szuber J.
PMID: 24461127
Nanoscale Res Lett. 2014 Jan 25;9(1):43. doi: 10.1186/1556-276X-9-43.

In this paper we investigate the surface chemistry, including surface contaminations, of SnO2 nanowires deposited on Ag-covered Si substrate by vapor phase deposition (VPD), thanks to x-ray photoelectron spectroscopy (XPS) in combination with thermal desorption spectroscopy (TDS). Air-exposed SnO2...

Showing 13 to 24 of 388 entries