101,932 research outputs found
Possible Evidence of Piezonuclear Alpha Emission
No full textCompression cycles at different loading speeds, each followed by a rapid stress release, were applied to cylindrical AISI 304 steel bars with 500 g mass, 2 cm diameter and 20 cm height. Three ZnS scintillators and a Geiger counter were placed around the samples. The emission of ionizing particles was both recorded by the Geiger and by the alpha particles counters during the compression and decompression phases. The recorded counts-rates as a function of the load are here shown and commented
Considerations on the sphere of application of application of European Union animal protection legislation for horses
No full textThe increasing awareness of animal welfare issues among consumers and the general public within the European Union has brought the European Legislature to pass the necessary laws concerning the protection of animals kept for zootechnical purposes in the various steps of the food chain, from breeding to slaughtering. Considering horses may be kept for different purposes, as companion animals on one hand or as farm animals on the other, European legislation on animal protection appears to apply to them only in part. However, at a closer look, in consistency with the competence areas of the EU as defined by the Treaty, it is the purpose of the activity (be it economic/commercial or not) and not the final purpose of the equine (be it DPA or non-DPA, i.e. destined or not for human consumption) along the whole food chain that becomes the decisive factor for the application of the above cited legislation, which has been issued to avoid disparities which could determine distortions within the common market. Even horses which are not kept for food production are addressed by EU laws, when they are bred or transported in connection with a commercial activity, while equines kept for purposes outside this context are protected only by national laws
Evidence of alpha emission from compressed steel bars
No full textFour cylindrical steel bars of 2 cm diameter and 20 cm height were subjected to compression cycles each of them consisting of a loading phase at fixed stress rate followed by a rapid stress release. Different compression rates were used for the same sample. The area surrounding the loaded samples was monitored in order to check whether ionizing particles were emitted. To this aim, three ZnS(Ag) detectors, a Geiger counter, and some polycarbonate CR39 detectors of alpha particles were used. An 3He proportional detector of neutrons was also used. The whole set of results is discussed and proposed
as an evidence of alpha particles emission from the bars during the compression cycles
Treatment of equine sarcoids
No full textOur data suggest that cidofovir formulated with sucralfate gel could be used to treat BPV-1 and -2-induced sarcoids in horses
Determinazione non distruttiva mediante diffrazione neutronica degli sforzi residui in componenti saldati
No full textEd. Istituto Italiano della Saldatura, Genova, Sett. Ott. 199
Disease progression or pseudoprogression after concomitant radiochemotherapy treatment: pitfalls in neurooncology.
No full textEarly ictal speech and motor inhibition in fronto-mesial epileptic seizures: a polygraphic study in one patient
No full textObjective: To investigate ictal motor inhibition occurring during seizures in a patient with a tumor located in the left fronto-mesial precentral cortex.Methods: Awake and sleep video-polygraphic monitoring, recording scalp EEG and EMG activities from several cranial, trunk and limbs muscles, was performed in a patient with drug-resistant recurrent focal motor seizures before surgical treatment. Speech/motor tasks were repeatedly administered to the patient during the recording sessions in order to evaluate the occurrence of early ictal motor inhibition.Results: Thirty-four seizures were recorded during wakefulness showing a stereotyped pattern of inhibition of speech and voluntary movements followed by sequential activation of upper limb–trunk–lower limb muscles contralateral to the tumor. Polygraphic recordings showed that: (1) initial speech and motor arrest were associated with the EMG evidence of progressive muscle tone suppression in cranial and right distal upper limb muscles; (2) tonic contraction of right deltoid, biceps brachii, intercostalis and paraspinalis muscles appeared aftermotor inhibition; (3) tonic-clonic activity in the right tibialis anterior muscle occurred at the end of seizures. Eleven subclinical seizures were recorded during sleep showing mild focal tonic EMG activity in right side trunk muscles.Conclusions: Our findings evidenced early and somatotopically organized inhibition of voluntary movement at the beginning of epileptic seizures with fronto-mesial onset. The demonstration that speech and motor arrest were associated with progressive EMG suppression in cranial and limb muscles supports the hypothesis of motor inhibitory seizures originating in the mesial aspect of pre-motor frontal cortex
Endoscopic-assisted cranionasal approaches for the treatment of anterior skull base malignant tumors
No full textThe endoscopic technique does not substitute traditional resections but is highly useful to improve visualization during these approaches and reduces morbidity. We describe 18 malignant tumors of the paranasal sinuses treated through endoscopic-assisted cranionasal resection between November 2000 and March 2007. Treatment was completed with chemotherapy and/or radiotherapy. The surgical approaches and the technique used are described. Patient follow-up ranged between 12 and 60 months (mean: 33 months). Local recurrence occurred in three patients (17%) and distant metastases in two (11%). The technique has lower morbidity than craniofacial approaches since it avoids facial incisions. There were no cerebrospinal fluid leaks and the patients were discharged within a week. The advantages of endoscopic-assisted cranionasal resection are that it improves results and reduces morbidity in the treatment of malignant tumors of the skull base
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