[The Third Crystal Movie Free Download In Italian
Abdul Soumphonphakdy
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Objectives: To identify the prevalence of calcium pyrophosphate crystal deposition (CPPD) using ultrasound and conventional radiology at peripheral joints in patients with suspected or definite CPPD.
Methods: A systematic literature search was performed in PubMed and Embase using pre-defined search strategies from inception to April 2021 to identify studies that evaluated conventional radiology and ultrasound in detecting CPPD at peripheral joints, including definite or suspected CPPD [Research question 1 (RQ1) and Research Question 2 (RQ2), respectively]. For the meta-analysis, the first, second, and third sub-analysis included studies with the knee, and knee or wrist as the index joint for CPPD (without restrictions on the reference standard) and synovial fluid analysis or histology as a reference standard (without restrictions on the index joint), respectively.
Results: One-thousand eight hundred and twenty-seven manuscripts were identified, of which 94 articles were finally included. Twenty-two and seventy-two papers were included in RQ1 and RQ2, respectively. The knee had the highest prevalence for RQ1 and RQ2 by both conventional radiology and ultrasound, followed by the wrist with the highest prevalence for RQ1. The hand had the lowest CPPD prevalence. The third sub-analysis showed a higher CPPD prevalence on ultrasound than conventional radiology at the knee (only data available).
Conclusion: Among all peripheral joints, the knees and wrists could be regarded as the target joints for CPPD detection by imaging. Furthermore, ultrasound seems to detect a higher number of calcium pyrophosphate deposits than conventional radiology, even when using a more restrictive reference standard.
M. Nocente, C. Cazzaniga, M. Tardocchi, F. Binda, J. Eriksson, L. Giacomelli, A. Muraro, M. Rebai, S. Sharapov, G. Gorini, JET Contributors; Fast ion energy distribution from third harmonic radio frequency heating measured with a single crystal diamond detector at the Joint European Torus. Rev. Sci. Instrum. 1 October 2015; 86 (10): 103501.
Neutron spectroscopy measurements with a single crystal diamond detector have been carried out at JET, for the first time in an experiment aimed at accelerating deuterons to MeV energies with radio frequency heating at the third harmonic. Data are interpreted by means of the expected response function of the detector and are used to extract parameters of the highly non-Maxwellian distribution function generated in this scenario. A comparison with observations using a time of flight and liquid scintillator neutron spectrometers is also presented. The results demonstrate the capability of diamond detectors to contribute to fast ion physics studies at JET and are of more general relevance in view of the application of such detectors for spectroscopy measurements in the neutron camera of next step tokamak devices.
The crystal keeps on coming for Lara Gut-Behrami at the second weekend of finals in Saalbach. Finishing in seventh place in the final Super-G on Friday, the Swiss athlete wins the Crystal Globe in this discipline as well - her third after winning the overall World Cup and the Giant Slalom. Kajsa Vickhoff Lie podiums in third place for the third time this season. In the men's Super-G, Vincent Kriechmayr finishes the season in second place overall.
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Quasicrystals, solids with rotational symmetries forbidden for crystals, are usually synthesized in the laboratory by mixing specific ratios of selected elemental components in the liquid and quenching under strictly controlled protocols. Nevertheless, the discovery of Al-Cu-Fe natural quasicrystals in the Khatyrka meteorite showed that these exotic phases could also form in high-velocity impact-induced shock events introducing an endeavour to search them in cosmic material. Here we report the discovery of an extraterrestrial icosahedral quasicrystal with an unusual composition Al51.7(6)Cu30.8(9)Fe10.3(4)Si7.2(9), ideally Al52Cu31Fe10Si7, found in a scoriaceous micrometeorite, named FB-A1, recovered at the top of Mt. Gariglione (Italy). The chemistry of the icosahedral phase was characterized by electron microprobe, and the rotational symmetry was confirmed by means of electron backscatter diffraction. The FB-A1 micrometeorite represents the third independent discovery of naturally occurring intermetallic Al-Cu-Fe-(Si) alloys in extraterrestrial bodies and the second case of extraterrestrial material containing a natural quasicrystal, after Khatyrka meteorite.
In 1984, the scientific breakthrough of an artificial Al-Mn alloy having forbidden symmetry shocked the crystallography and condensed matter physics communities1. These materials are characterized by a quasiperiodic distribution of atoms arranged in a pattern, violating the crystallographic symmetry rules that apply to ordinary (periodic) crystals. Such a behavior is nowadays exploited for numerous industrial and technological applications2,3.
Twenty-five years after the discovery of the first artificial alloy came the report that such forbidden symmetries could also exist in nature, producing the first natural icosahedral Al-Cu-Fe quasicrystal4. It was discovered inside Khatyrka, a rare CV3 carbonaceous chondrite5,6,7,8,9,10. Specifically, many further investigations on different fragments of this meteorite provided the discovery of three different quasicrystals: icosahedrite, Al63Cu24Fe134,11, decagonite, Al71Ni24Fe512,13, and an unnamed i-phase II, Al62Cu31Fe714,15. A new occurrence of a micrometeorite, named KT01, having metallic Al-Cu-Fe-assemblages with strong analogies with Khatyrka, was found in the Nubian desert in Sudan in 2013 and was independently reported by Suttle et al.16,17. However, mainly due to the low content of Fe in the alloys, it did not contain any quasicrystalline phases. Therefore, the only known examples of natural quasicrystals were limited to those from the Khatyrka meteorite.
Electron microprobe (EPMA), further SEM analyses and electron backscatter diffraction (EBSD) have been used for the subsequent, more in-depth investigation of the chemical and mineralogical composition of FB-A1, after polishing a portion of the sample.
a SEM-BSE image of the rectangle highlighted in Fig. 3a. The bright phase is stolperite (with slightly variable Cu/Fe ratio), the dark phase is the new quasicrystal. The red spot indicates the point where the EBSD pattern was collected; b EBSD pattern acquired on the red spot with the typical icosahedral symmetry with 5-, 3-, 2-fold axes.
The new quasicrystal is close in composition to synthetic icosahedral Al55Si7Cu25.5Fe12.523,24. The slightly different Al/Cu ratio between the natural and synthetic phase is not surprising. The difference between the product obtained in the laboratory and the natural phase could be linked to a kinetically stabilized composition, only preserved because of very rapid quench. This would imply that the natural quasicrystal described here would be thermodynamically unstable at any pressure and temperature. A similar (but even more evident) variation has been observed between icosahedrite (Al63Cu24Fe132,3,4,5,6,7,8,9) and i-phase II (Al62Cu31Fe712,13) and testifies how the shock generated in the collision among planetary bodies is responsible for a wider thermodynamic stability range of these quasicrystalline phases at high pressure25,26,27.
The new quasicrystal was formed by an entirely uncontrolled mechanism, lasting perhaps a few minutes, yet resulting almost identical to industrial artificial quasicrystals with similar composition. The new discovery proves how mineralogy (and Earth Sciences in general) can continue to surprise us and bring significant breakthroughs to science.
G.A., P.M., G.T., and F.R. did the preliminary SEM characterization of the sample. D.M. carried out the micro-computed X-ray tomography study. T.C. performed the SEM and EBSD studies on the polished section. G.A. and L.B. wrote the manuscript. All authors discussed the results and commented on the manuscript.
Communications Earth & Environment thanks Matthew Genge, John Eiler and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Primary Handling Editors: Claire Nichols and Joe Aslin. A peer review file is available.
Andrew M. Allen, Commander
Scott J. Horowitz, Pilot
Franklin R. Chang-Diaz, Payload Commander
Maurizio Cheli, Mission Specialist
Umberto Guidoni, Payload Specialist
Jeffrey A. Hoffman, Mission Specialist
Claude Nicollier, Mission Specialist
Liftoff occurred ontime following smooth countdown. Six seconds after liftoff, crew reported left main engine chamber pressure tape meter was reading only 40 percent thrust instead of 104 percent prior to throttle-down. Mission controllers in Houston reported telemetry showed all three engines were performing nominally and there was no effect on the ascent phase.
Reflight of U.S./Italian Tethered Satellite System (TSS-1R) marred by loss of satellite on flight day three, although valuable scientific data was still gathered. Other primary payload, U.S. Microgravity Payload-3 (USMP-3), performed nominally. TSS considered primary payload at beginning of mission and USMP-3 primary following TSS operations.
USMP-3, flying on shuttle for third time, included U.S. and international experiments, all of which had flown at least once before: Advanced Automated Directional Solidification Furnace (AADSF), a crystal growth facility; Critical Fluid Light Scattering Experiment (Zeno), to study element Xenon at its critical point; Isothermal Dendritic Growth Experiment (IDGE), to study formation of dendrites, tree-shaped crystals that in metals manufacturing dictate final properties of material; and Materials for the Study of Interesting Phenomena of Solidification on Earth and in Orbit (MEPHISTO) to study how metals solidify in microgravity using a furnace.
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