80 research outputs found
First ATR-FTIR Characterization of Black, Green and White Teas (Camellia sinensis) from European Tea Gardens: A PCA Analysis to Differentiate Leaves from the In-Cup Infusion
ATR-FTIR (Attenuated Total Reflectance Fourier Transform InfraRed) spectroscopy, combined with chemometric, represents a rapid and reliable approach to obtain information about the macromolecular composition of food and plant materials. With a single measurement, the chemical fingerprint of the analyzed sample is rapidly obtained. Hence, this technique was used for investigating 13 differently processed tea leaves (green, black and white) all grown and processed in European tea gardens, and their vacuum-dried tea brews, prepared using both hot and cold water, to observe how the components differ from tea leaf to the in-cup infusion. Spectra were collected in the 1800â600 cmâ1 region and were submitted to Principal Component Analysis (PCA). The comparison of the spectral profiles of leaves and hot and cold infusions of tea from the same country, emphasizes how they differ in relation to the different spectral regions. Differences were also noted among the different countries. Furthermore, the changes observed (e.g., at ~1340 cmâ1) due to catechin content, confirm the antioxidant properties of these teas. Overall, this experimental approach could be relevant for rapid analysis of various tea types and could pave the way for the industrial discrimination of teas and of their health properties without the need of time-consuming, lab chemical assays
The practice of deep sedation in electrophysiology and cardiac pacing laboratories: Results of an italian survey promoted by the aiac (italian association of arrhythmology and cardiac pacing)
The aim of this survey, which was open to all Italian cardiologists involved in arrhythmia, was to assess common practice regarding sedation and analgesia in interventional electrophysiology procedures in Italy. The survey consisted of 28 questions regarding the approach to sedation used for elective direct-current cardioversion (DCC), subcutaneous implantable cardioverter-defibrillator (S-ICD) implantation, atrial fibrillation (AF) ablation, ventricular tachycardia (VT) ablation, and transvenous lead extraction procedures. A total of 105 cardiologists from 92 Italian centres took part in the survey. The rate of centres where DCC, S-ICD implantation, AF ablation, VT ablation and lead extraction procedures were performed without anaesthesiologic assistance was 60.9%, 23.6%, 51.2%, 37.3%, and 66.7%, respectively. When these procedures were performed without anaesthesiologic assistance, the drugs (in addition to local anaesthetics) commonly administered were benzodiazepines (from 64.3% to 79.6%), opioids (from 74.4% to 88.1%), and general anaesthetics (from 7.1% to 30.4%). Twenty-three (21.9%) of the 105 cardiologists declared that they routinely administered propofol, without the supervision of an anaesthesiologist, in at least one of the above-mentioned procedures. In current Italian clinical practice, there is a lack of uniformity in the sedation/analgesia approach used in interventional electrophysiology procedures
Frequency-modulated electromagnetic neural stimulation (FREMS) as a treatment for symptomatic diabetic neuropathy: results from a double-blind, randomised, multicentre, long-term, placebo-controlled clinical trial
AIMS/HYPOTHESIS: The aim was to evaluate the efficacy and safety of
transcutaneous frequency-modulated electromagnetic neural stimulation (frequency
rhythmic electrical modulation system, FREMS) as a treatment for symptomatic
peripheral neuropathy in patients with diabetes mellitus.
METHODS: This was a double-blind, randomised, multicentre, parallel-group study
of three series, each of ten treatment sessions of FREMS or placebo administered
within 3 weeks, 3 months apart, with an overall follow-up of about 51 weeks. The
primary endpoint was the change in nerve conduction velocity (NCV) of deep
peroneal, tibial and sural nerves. Secondary endpoints included the effects of
treatment on pain, tactile, thermal and vibration sensations. Patients eligible
to participate were aged 18-75 years with diabetes for â„ 1 year, HbA(1c) <11.0%
(97 mmol/mol), with symptomatic diabetic polyneuropathy at the lower extremities
(i.e. abnormal amplitude, latency or NCV of either tibial, deep peroneal or sural
nerve, but with an evocable potential and measurable NCV of the sural nerve), a
Michigan Diabetes Neuropathy Score â„ 7 and on a stable dose of medications for
diabetic neuropathy in the month prior to enrolment. Data were collected in an
outpatient setting. Participants were allocated to the FREMS or placebo arm (1:1
ratio) according to a sequence generated by a computer random number generator,
without block or stratification factors. Investigators digitised patients' date
of birth and site number into an interactive voice recording system to obtain the
assigned treatment. Participants, investigators conducting the trial, or people
assessing the outcomes were blinded to group assignment.
RESULTS: Patients (n = 110) with symptomatic neuropathy were randomised to FREMS
(n = 54) or placebo (n = 56). In the intention-to-treat population (50 FREMS, 51
placebo), changes in NCV of the three examined nerves were not different between
FREMS and placebo (deep peroneal [means ± SE]: 0.74 ± 0.71 vs 0.06 ± 1.38 m/s;
tibial: 2.08 ± 0.84 vs 0.61 ± 0.43 m/s; and sural: 0.80 ± 1.08 vs -0.91 ± 1.13
m/s; FREMS vs placebo, respectively). FREMS induced a significant reduction in
day and night pain as measured by a visual analogue scale immediately after each
treatment session, although this beneficial effect was no longer measurable 3
months after treatment. Compared with the placebo group, in the FREMS group the
cold sensation threshold was significantly improved, while non-significant
differences were observed in the vibration and warm sensation thresholds. No
relevant side effects were recorded during the study.
CONCLUSIONS/INTERPRETATION: FREMS proved to be a safe treatment for symptomatic
diabetic neuropathy, with immediate, although transient, reduction in pain, and
no effect on NCV.
TRIAL REGISTRATION: ClinicalTrials.gov NCT01628627.
FUNDING: The clinical trial was sponsored by Lorenz Biotech (Medolla, Italy),
lately Lorenz Lifetech (Ozzano dell'Emilia, Italy)
Economia, organizzazioni criminali e corruzione
L\u2019economia \ue8 la scienza che osserva il comportamento umano di fronte alla scarsit\ue0; e la corruzione \ue8 assai spesso la strada pi\uf9 redditizia per procurarsi risorse scarse. L\u2019organizzazione \ue8 la scienza che studia le forme razionali di divisione e coordinamento del lavoro umano; e la corruzione ha bisogno del supporto di forme efficaci di organizzazione del lavoro umano, legale o criminale che sia, per essere realizzata. L\u2019analisi dei saggi contenuti nel volume sostiene la tesi che tra il fenomeno della corruzione e i fenome- ni economici e organizzativi ci siano relazioni intense. Gli autori dei con- tributi sono economisti, sociologi, aziendalisti, giuristi, storici e statistici. Il lettore pertanto potr\ue0 farsi un\u2019idea del fenomeno della corruzione attingen-
do a prospettive di analisi assai diverse tra di loro
Copernicus Marine Service Ocean State Report
This is the final version. Available from Taylor & Francis via the DOI in this record
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The Copernicus Marine Environment Monitoring Service Ocean State Report
The Copernicus Marine Environment Monitoring Service (CMEMS) Ocean State Report (OSR) provides an annual report of the state of the global ocean and European regional seas for policy and decision-makers with the additional aim of increasing general public awareness about the status of, and changes in, the marine environment. The CMEMS OSR draws on expert analysis and provides a 3-D view (through reanalysis systems), a view from above (through remote-sensing data) and a direct view of the interior (through in situ measurements) of the global ocean and the European regional seas. The report is based on the unique CMEMS monitoring capabilities of the blue (hydrography, currents), white (sea ice) and green (e.g. Chlorophyll) marine environment. This first issue of the CMEMS OSR provides guidance on Essential Variables, large-scale changes and specific events related to the physical ocean state over the period 1993â2015. Principal findings of this first CMEMS OSR show a significant increase in global and regional sea levels, thermosteric expansion, ocean heat content, sea surface temperature and Antarctic sea ice extent and conversely a decrease in Arctic sea ice extent during the 1993â2015 period. During the year 2015 exceptionally strong large-scale changes were monitored such as, for example, a strong El Niño Southern Oscillation, a high frequency of extreme storms and sea level events in specific regions in addition to areas of high sea level and harmful algae blooms. At the same time, some areas in the Arctic Ocean experienced exceptionally low sea ice extent and temperatures below average were observed in the North Atlantic Ocean
Argo data 1999-2019: two million temperature-salinity profiles and subsurface velocity observations from a global array of profiling floats.
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Wong, A. P. S., Wijffels, S. E., Riser, S. C., Pouliquen, S., Hosoda, S., Roemmich, D., Gilson, J., Johnson, G. C., Martini, K., Murphy, D. J., Scanderbeg, M., Bhaskar, T. V. S. U., Buck, J. J. H., Merceur, F., Carval, T., Maze, G., Cabanes, C., Andre, X., Poffa, N., Yashayaev, I., Barker, P. M., Guinehut, S., Belbeoch, M., Ignaszewski, M., Baringer, M. O., Schmid, C., Lyman, J. M., McTaggart, K. E., Purkey, S. G., Zilberman, N., Alkire, M. B., Swift, D., Owens, W. B., Jayne, S. R., Hersh, C., Robbins, P., West-Mack, D., Bahr, F., Yoshida, S., Sutton, P. J. H., Cancouet, R., Coatanoan, C., Dobbler, D., Juan, A. G., Gourrion, J., Kolodziejczyk, N., Bernard, V., Bourles, B., Claustre, H., D'Ortenzio, F., Le Reste, S., Le Traon, P., Rannou, J., Saout-Grit, C., Speich, S., Thierry, V., Verbrugge, N., Angel-Benavides, I. M., Klein, B., Notarstefano, G., Poulain, P., Velez-Belchi, P., Suga, T., Ando, K., Iwasaska, N., Kobayashi, T., Masuda, S., Oka, E., Sato, K., Nakamura, T., Sato, K., Takatsuki, Y., Yoshida, T., Cowley, R., Lovell, J. L., Oke, P. R., van Wijk, E. M., Carse, F., Donnelly, M., Gould, W. J., Gowers, K., King, B. A., Loch, S. G., Mowat, M., Turton, J., Rama Rao, E. P., Ravichandran, M., Freeland, H. J., Gaboury, I., Gilbert, D., Greenan, B. J. W., Ouellet, M., Ross, T., Tran, A., Dong, M., Liu, Z., Xu, J., Kang, K., Jo, H., Kim, S., & Park, H. Argo data 1999-2019: two million temperature-salinity profiles and subsurface velocity observations from a global array of profiling floats. Frontiers in Marine Science, 7, (2020): 700, doi:10.3389/fmars.2020.00700.In the past two decades, the Argo Program has collected, processed, and distributed over two million vertical profiles of temperature and salinity from the upper two kilometers of the global ocean. A similar number of subsurface velocity observations near 1,000 dbar have also been collected. This paper recounts the history of the global Argo Program, from its aspiration arising out of the World Ocean Circulation Experiment, to the development and implementation of its instrumentation and telecommunication systems, and the various technical problems encountered. We describe the Argo data system and its quality control procedures, and the gradual changes in the vertical resolution and spatial coverage of Argo data from 1999 to 2019. The accuracies of the float data have been assessed by comparison with high-quality shipboard measurements, and are concluded to be 0.002°C for temperature, 2.4 dbar for pressure, and 0.01 PSS-78 for salinity, after delayed-mode adjustments. Finally, the challenges faced by the vision of an expanding Argo Program beyond 2020 are discussed.AW, SR, and other scientists at the University of Washington (UW) were supported by the US Argo Program through the NOAA Grant NA15OAR4320063 to the Joint Institute for the Study of the Atmosphere and Ocean (JISAO) at the UW. SW and other scientists at the Woods Hole Oceanographic Institution (WHOI) were supported by the US Argo Program through the NOAA Grant NA19OAR4320074 (CINAR/WHOI Argo). The Scripps Institution of Oceanography's role in Argo was supported by the US Argo Program through the NOAA Grant NA15OAR4320071 (CIMEC). Euro-Argo scientists were supported by the Monitoring the Oceans and Climate Change with Argo (MOCCA) project, under the Grant Agreement EASME/EMFF/2015/1.2.1.1/SI2.709624 for the European Commission
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