1,720,979 research outputs found
Data set fromMazzaccaro D, Miri R, Derbel B, Modafferi A, Nano G. Hypogastric artery coverage during endovascular aneurysm repair in octogenarian and younger patients. J Cardiovasc Med (Hagerstown). 2019 Aug;20(8):557-563. doi: 10.2459/JCM.0000000000000799. PMID: 30950984.
No full textData set fromMazzaccaro D, Miri R, Derbel B, Modafferi A, Nano G. Hypogastric artery coverage during endovascular aneurysm repair in octogenarian and younger patients. J Cardiovasc Med (Hagerstown). 2019 Aug;20(8):557-563. doi: 10.2459/JCM.0000000000000799. PMID: 30950984.
This is the abstract:
Aim: To report our experience about hypogastric artery coverage during endovascular aneurysm repair (EVAR) for aortoiliac aneurysms in patients younger than 80 years (group A) compared with octogenarian patients (group B).
Methods: Data of consecutive EVAR with hypogastric artery coverage from 01/1998 to 12/2016 were retrospectively analyzed. Primary outcomes were the occurrence of ischemic colitis, type II endoleak and buttock claudication both at 30 days and in the long term. P values less than 0.05 were considered statistically significant.
Results: The hypogastric artery was covered in 107 patients. Twenty-three (21.5%) were octogenarian (group B). At 30 days, one type II endoleak occurred in group B, whereas 16 patients of group A experienced buttock claudication. There were no cases of ischemic colitis. During follow-up (median 63.5 months), no cases of ischemic colitis occurred. Six new type II endoleaks were recorded (five in group B and one in group A, P = 0.0001). Buttock claudication persisted in four patients of group A. No new cases of buttock claudication were observed.
Conclusion: Unilateral hypogastric artery coverage during EVAR for aortoiliac aneurysms can be performed with an acceptable rate of postoperative complication. Postoperative buttock claudication was more frequent in younger patients, whereas a type II endoleak occurred mostly in octogenarian patients during follow-up
Ecological costs of botanical nano-insecticides
No full textBotanical nano-insecticides are a trend in pest control. The natural origin of the active substances, alongside with the methodological approach granted by nanotechnologies are a promising combination of innovation and eco-sustainability, hot topics in the context of ecological transition in agriculture. Nevertheless, their field application is still limited, due to production challenges and risk assessment concerns. Nanoformulations have some advantages over traditional bioinsecticides, including increased bioactivity and persistence, and slow-release rates. Recent research reported promising insecticidal activity of nano-emulsions, micro-emulsions, and nanoparticles loaded with different botanical extracts, oils, and essential oils. Though, despite their proven efficacy against insect pests and vectors, a limited number of studies investigated their safety towards nontarget organisms and fate in the environment. This mini-review provides an overview of the side-effects of botanical nano-insecticides and the main challenges to improve their sustainability in term of ecological and production cost
On the different roles of the cerebral hemispheres in mental imagery: the "o'Clock Test" in two clinical cases.
No full textHELIPLAT as a GSM base station: the channel model
No full textIn this paper we consider issues about the use of a solor powered unmanned high altitude platform named Heliplat used as a GSM base statio
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
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