1,721,085 research outputs found
The moisture issue affecting the historical buildings in the Po valley
No full textThis paper deals with the climate-related risks associated with the conservation of historical buildings in the Alps region. The aim of the paper is to build the microclimatic curve of the T°C (temperature) and RH% (Relative Humidity) daily average in different locations (at a similar altitude in the same valleys), compare them against each other and also to the microclimatic curves obtained in the Po valley [3]. The case studies in Valtellina and Val Poschiavo Valley were identified to monitor and analyse the thermo-hydrometrical variation of air T°C and RH%, followed by a thorough assessment and documentation of the buildings (state of conservation, materials and building techniques, presence of rising damp and intervention for its reduction). The analysis is composed of visual inspections, microclimate monitoring using psychrometry and monitoring probes, Infra-Red (IR) Thermography. The result of the study explores the correlation with factors pertaining to building materials and construction techniques, the climatic and microclimatic characteristics. Curves describing the daily mean values of T°C and RH% for a period of one year have been defined by the authors for each of the historical buildings
Developmental changes of normal nerve conduction velocity in infancy
No full textMaximal motor conduction velocity of ulnar, median and peroneal nerves has been studied in a group of healthy children ranging between 2 months and 5 years of age. At the age of 2 months, conduction velocity in the examined nerves is about half that recorded in the adult. It rapidly increases, particularly in the first three years of life and at 5 years of age it is still below that of the adult. These results are discussed in relationship to histochemical and biochemical data on maturation and development of the peripheral motor system
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Hirayama disease: three cases assessed by F wave, somatosensory and motor evoked potentials and magnetic resonance imaging not supporting flexion myelopathy.
No full textTraumatic chronic injury of the cervical spinal cord caused by neck flexion ("flexion myelopathy") is one of the suggested pathogenetic mechanisms for Hirayama disease (HD). Neurophysiological data, especially reporting particularly N13 cervical somatosensory response, are scarce and conflicting in HD. F wave, somatosensory evoked potentials (SEP), motor evoked potentials (MEP) and magnetic resonance imaging (MRI) studies were assessed in 3 HD male patients (aged 22, 36, and 51 years) with the aim of evaluating the functional effects of neck flexion in HD. Median and ulnar F waves, median, ulnar and posterior tibial SEP, and upper and lower limb MEP were performed bilaterally in standard conditions and during neck flexion in the patients. Cervical spinal MRI study was performed in standard position in two patients and both in standard and flexed positions in the third patient. F wave, SEP, and MEP findings did not show statistically significant differences in standard conditions and during neck flexion both in HD patients and controls. MRI with neck in standard position was normal in two patients, while in the third patient revealed cervical anterior horns signal changes and cord atrophy. In this patient, MRI with the neck in flexion showed that the spinal cord was normally located, was not compressed within the cervical canal and that there were no abnormalities of the dural sac. These findings suggest that in a complex disorder like HD no definite conclusions can be drawn from the present paper and some cases of HD without evidence of "flexion myelopathy" might have a different pathogenetic mechanism
A proposito di un nuovo caso di neuropatia ipertrofica familiare a trasmissione dominante, ad esordio precoce e ad evoluzione benigna
No full textClinical and electrodiagnostic follow-up of an adolescent poisoned with thallium.
No full textWe report a six-year clinical and electrodiagnos-tic follow-up of an adolescent patient with acute thallium
poisoning from attempted suicide. During the acute stage
the patient showed gastrointestinal disturbances, alopecia,
and clinical and electrodiagnostic signs of severe polyneu-ropathy. Three years after poisoning, his neurological
symptomatology was making progress, and electrophysio-logic signs of peripheral neuropathy were mainly confined
to lower limbs. Six years after intoxication, he was still
complaining of weakness and sensory disturbances at the
level of distal lower extremities; his neurologic and elec-trodiagnostic abnormalities affected mainly the feet. In this
case report we underline the importance of early diagnosis
and treatment to prevent neurological damage and the role
of serial electromyographic and nerve conduction studies
in thallium poisoning. These investigations allowed the
authors to depict the electrophysiologic course of peripher-al nervous system involvement over six years following
poisonin
Continuous muscle fiber activity associated with denervation atrophy. Clinical presentation, electrophysiological and pharmacological investigations, histological and histochemical examinations of muscle biopsy
No full text- …
