The system of diagnostics, data acquisition and control foreseen on the Divertor Test Tokamak experiment (DTT) is presented. Conceived in an integrated way, the control system meets the ...specifications of a fusion experiment devoted to the study of the power exhaust problem in view of DEMO. Diagnostics and feedback control are particularly functional to the need of maintaining the plasma close to equilibrium in situations prone to instabilities where the plasma wall interaction is optimized. Strongly oriented to the exploration of control methods suitable for DEMO, DTT will specifically experiment on physics and engineering model based control systems. Control and data flow schemes are inspired by those of ITER.
Monitoring of absolute mirror alignment at COMPASS RICH-1 detector Alexeev, M.; Birsa, R.; Bradamante, F. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/2014, Letnik:
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The gaseous COMPASS RICH-1 detector uses two spherical mirror surfaces, segmented into 116 individual mirrors, to focus the Cherenkov photons onto the detector plane. Any mirror misalignment directly ...affects the detector resolution. The on-line Continuous Line Alignment and Monitoring (CLAM) photogrammetry-based method has been implemented to measure the alignment of individual mirrors which can be characterized by the center of curvature. The mirror wall reflects a regular grid of retroreflective strips placed inside the detector vessel. Then, the position of each mirror is determined from the image of the grid reflection. The images are collected by four cameras. Any small mirror misalignment results in changes of the grid lines' positions in the image. The accuracy limits of the CLAM method were checked by laser interferometry and are below 0.1 mrad.
Italy was among the first countries hit by the pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The application of strict lockdown measures disproportionately ...affected both cancer patient care as well as basic and translational cancer research.
The Italian Cancer Society (SIC) conducted a survey on the effect of lockdown on laboratories involved in cancer research in Italy. The survey was completed by 570 researchers at different stages of their career, working in cancer centers, research institutes and universities from 19 Italian regions.
During the lockdown period, the impact of the COVID-19 pandemic emergency on face-to-face research activities was high, with a complete (47.7%) or partial (36.1%) shutdown of the laboratories. In the post-lockdown period, research activities were resumed in most of the respondents’ institutions (80.4%), though with some restrictions (77.2%). COVID-19 testing was offered to research personnel only in ~50% of research institutions. Overall, the response to the pandemic was fragmented as in many cases institutions adopted different strategies often aimed at limiting possible infections without a clearly defined contingency plan. Nevertheless, research was able to provide the first answers and possible ways out of the pandemic, also with the contribution of many cancer researchers that sacrificed their research programs to help overcome the pandemic by offering their knowledge and technologies.
Given the current persistence of an emergency situation in many European countries, a more adequate organization of research centers will be urgent and necessary to ensure the continuity of laboratory activities in a safe environment.
•The SIC conducted a survey on the effect of COVID-19 lockdown on cancer research laboratories in Italy.•The impact of the lockdown on research activities was high, with complete or partial shutdown of >80% of the laboratories.•Response to the pandemic was fragmented with different strategies adopted without a clearly defined contingency plan.•An adequate organization of research centers is urgently needed to ensure laboratory activities in a safe environment.
Adnexal torsion is a surgical emergency requiring early diagnosis in order to avoid demolitive surgery. Adnexal torsion’s diagnosis could be very difficult in pediatric patients because children ...cannot explain symptoms accurately. Furthermore reproductive organs lie high in abdomen, causing unclear examinations findings. For reducing diagnostic mistakes or delay clinical and hematological criteria could be useful. No radiological criteria (CT or MRI) should be taken in count because of the costs and the required time. By combining clinical presentation in patients with OT three useful diagnostic variables have been identified: age, duration of pain, vomiting. Presence of vomiting, short duration of abdominal pain and high CRP levels have great predictive value for the diagnosis of adnexal torsion. In those patients an exploratory laparoscopy should be performed without any doubt and/or delay. These data may aid physicians in the evaluation of abdominal pain in premenarchal girls.
•The cDNA clone PsARF/XYL from Japanese plum encodes a putative α-Araf/β-Xyl.•A fully-spliced and an intron-retained transcript were identified from PsARF/XYL.•PsARF/XYL expression is developmentally ...regulated by alternative splicing.•The fully-spliced transcript is induced by ethylene during ripening.•Transcription of PsARF1 encoding a putative α-Araf is rapidly inhibited by ethylene.
A full-length cDNA clone named PsARF/XYL was obtained from Prunus salicina Lindl., and determined to encode a putative α-l-arabinofuranosidase/β-d-xylosidase belonging to glycoside hydrolase (GH, EC 3.2.1.-) family 3. Two related PsARF/XYL cDNAs were amplified, one from a fully-spliced transcript (PsARF/XYLa) and another one from an intron-retained transcript (PsARF/XYLb). The protein deduced from PsARF/XYLb is a truncated peptide at C-terminus that conserves the active-site amino acid sequence. High levels of PsARF/XYLa and PsARF/XYLb transcripts are detectable in several plant tissues. PsARF/XYLb transcripts accumulate progressively during the phase of exponential fruit growth but they become barely noticeable during on-tree ripening, or after a 6-h exposure of preclimacteric full-size plums to ethylene. In contrast, PsARF/XYLa is expressed throughout fruit development, and transcript accumulation parallels the climacteric rise in ethylene production during ripening. PsARF/XYLa expression is strongly induced in preclimacteric full-size plums after a 6-h treatment with physiologically active concentrations of ethylene. These findings suggest that PsARF/XYL gene is post-transcriptionally regulated by alternative splicing during development and that ethylene may be involved in this regulation. The isolation of a partial cDNA clone, PsARF1, is also reported. It encodes a putative cell-wall α-l-arabinofuranosidase, and its transcription is rapidly inhibited by ethylene in mature green plums.
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