1,720,963 research outputs found
CONSENSO INFORMATO E PROBLEMI MEDICO-LEGALI IN CHIRURGIA BARIATRICA:RISCHI DA ERRONEE INDICAZIONI CHIRURGICHE
No full textI rischi da erronee indicazioni in chirurgia
bariatrica possono essere di vario tipo.
È bene fare una premessa importante riportando
quelle che sono le linee guida
dettate nel 1997 dalla Società Americana
di Chirurgia Bariatrica e fatte proprie da
tutti i chirurghi che si occupano in modo
completo di obesità, per porre indicazione
ad un intervento chirurgico per il trattamento
dell'obesita
Splenectomy in haematological Patients
No full textIn the period from January 1990 to July 1998 we performed splenectomy on
129 patients of whom 77 were males and 52 females. The average age of patients
was 4l.7 years, ranging from 7 to 76 years old. 38 of these (equal to
29.4%) underwent emergency operation owing to trauma (25 males and 13 females).
In 3 patients (2 .3%) splenectomy was necessary owing to the existence
of localised enlargements (aneurysms) of the splenic artery. This palticular
motivation has gradually been reduced because of the growing possibility of
embolizing a peripheral enlargement,or aneurysms in one of the branches of
the subdivisions ofthe splenic artery.
In 88 patients (68.3%) splenectomy was necessary due to the manifestation
of splenomegaly in the development of spherocytos is, idiopathic thrombocytopenic
purpura, or Werlhofs disease, fibro-congestive splenomegaly or in
the presence of haemolytic or auto-immune diseases, or other pathològy.
Patients affected with lymphomata or chronic myeloproliferative disorders
are a case apart. For these patients the advisability of performing splenectomy
is relative, and strictly connected to their clinical histories, and to the accuracy
of diagnoses. In our group 48 male patients and 40 females were involved.
Many laparosplenectomies performed in the past have been rendered useless,
owing to the accuracy of clinico-pathology diagnostic systems such as
TAC and RMN in confirming the presence or not of splenic infiltration and in
diagnosing splenic lesions of uncertain nature. We chose to operate using median
laparotomy, which allows good exposure ofthe whole abdominal cavity,
even iftechnical difficulties can sometimes be met with atthe level ofthe upper
sector, in the case of a voluminous spleen attached to the diaphragm
TVP E MALFORMAZIONI CAVALI: CASE REPORT
No full textLa trombosi venosa profonda spesso é la manifestazione più evidente di una
patologia sottostante e, solo se accurate indagini di laboratorio e strumentali escludono tale
patologia, la trombosi venosa pub essere definita idiopatica.
E' necessario quindi, in assenza di L1na causa ben evidente di trombosi venosa, sottoporre il
paziente ad accertamenti.
Spesso viene rilevato un deficit della coagulazione; qualche volta la trombosi venosa é la prima
manifestazione di una neoplasia, altre volte é sostenuta da malattie del collagene.
Qualche volta può essere conseguenza di patologia malformativa sconosciuta fino al momento
della manifestazione trombotica.
Sono descritti casi, infatti, di malformazione della vena cava inferiore esorditi con trombosi venosa profonda
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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