Search results for "GMO"
showing 10 items of 156 documents
Presión arterial: ¿esfigmomanómetro manual o digital?
2008
El presente es un estudio prospectivo y comparativo entre la medición de la presión arterial obtenida de manera manual con esfigmomanómetro aneroide y la obtenida mediante monitor automático. El desarrollo de la práctica se realizó sobre un grupo de 100 pacientes hospitalizados en el servicio de Neurocirugía y Otorrinolaringología del Consorcio Hospital General de Valencia durante el primer trimestre del año 2007, mediante mediciones secuenciales y efectuadas por el mismo observador con ambos aparatos bien calibrados. Se observó mediante el método de correlación bivariada de Pearson que no existen diferencias estadísticamente significativas entre las presiones tomadas por ambos aparatos det…
Cancer-Related Venous Thrombosis: Residual Vein Thrombosis Improves Screening for Occult Cancer.
2007
Abstract Background. Clinical advantages of extensive screening for occult cancer in patients with idiopathic Deep Vein Thrombosis (DVT) is still debated since this approach improves early detection of cancer but not cancer-related mortality. Recently, we have demonstrated that patients with Residual Vein Thrombosis (RVT), 3 months after DVT, have a high risk for cancer in the subsequent 2 years (Siragusa S et al. Blood2005;106(11):OC262). At the present it is unknown whether RVT assessment may be used to select patients, with idiopathic DVT, who require screening for occult cancer. Objective of the study. We conducted a prospective study evaluating whether a RVT-based screening for cancer …
Using the Hermite Regression Formula to Design a Neural Architecture with Automatic Learning of the “Hidden” Activation Functions
2000
The value of the output function gradient of a neural network, calculated in the training points, plays an essential role for its generalization capability. In this paper a feed forward neural architecture (αNet) that can learn the activation function of its hidden units during the training phase is presented. The automatic learning is obtained through the joint use of the Hermite regression formula and the CGD optimization algorithm with the Powell restart conditions. This technique leads to a smooth output function of αNet in the nearby of the training points, achieving an improvement of the generalization capability and the flexibility of the neural architecture. Experimental results, ob…
IL CASO STUDIO DI ALCUNE PGM: IMPLICAZIONI PER LE SPECIE DI LEPIDOTTERI NON BERSAGLIO NELLE AREE PROTETTE SICILIANE
2012
La Sicilia è una delle regioni mediterranee con la maggior biodiversità faunistica e floristica la cui conservazione, potrà dipendere anche da un attento piano di valutazione del rischio derivante dall’introduzione di piante geneticamente modificate (PGM) sugli organismi non target. A tal fine sono state scelte due aree rappresentative di differenti habitat siciliani: il SIC “Raffo Rosso, Monte Cuccio e Vallone Sagana (ITA020023) e il SIC “Capo Gallo” (ITA020006). Sono stati individuati 5 habitat: Uliveto, Bosco misto, Ampelodesmeto, Macchia mediterranea e Macchia mediterranea costiera per valutare il potenziale rischio di introduzione di PGM Bt. La maggior parte della bibliografia sugli ef…
Framing of Corporate Social Responsibility by Agribusiness in the USA and Europe : A study of whether the Corporate Social Responsibility disclosure …
2016
Master thesis Business Administration BE501 - University of Agder 2016 This thesis examines whether the CSR reports by agricultural biotechnology and agrochemical companies in the USA and Europe align to the stakeholders’ (NGOs and the external constituents) expectations. The focus is on issues of key importance to these firms and the stakeholders, including GMOs, chemicals, and the corporate control over seeds. Framing creates expectations, as framing theory indicates framing is to focus on some of the many facets through which an issue can be seen, and highlight them using salient words and phrases to render them significant. The analysis revealed that 16 companies prepare CSR reports: 8 …
From risk assessment to in-context trajectory evaluation - GMOs and their social implications
2011
Purpose: Over the past twenty years, GMOs have raised enormous expectations, passionate political controversies, and an on-going debate on how should these technologies be assessed. Current risk-assessment procedures generally assess GMOs in terms of their potential risk of negatively affecting human health and the environment. Yet, is this risk-benefit approach appropriate to a deliver a robust assessment of GMOs? In this paper, we question the validity of current risk-assessment from both a social and an ecological perspective, and we elaborate an alternative approach, namely in-context trajectory evaluation Methods: This paper combines frame analysis, context analysis and eco-social anal…
Over-expression of two different forms of the α-secretase ADAM10 affects learning and memory in mice
2006
Members of the ADAM family (adisintegrin and metalloprotease) are the main candidates for physiologically relevant alpha-secretases. The alpha-secretase cleaves in the non-amyloidogenic pathway the amyloid precursor protein within the region of the Abeta peptides preventing their aggregation in the brain. The increase of alpha-secretase activity in the brain provides a plausible strategy to prevent Abeta formation. Concerning this possibility two transgenic mouse lines (FVB/N) have been created: mice over-expressing the bovine form of the alpha-secretase (ADAM10) and mice over-expressing an inactive form of the alpha-secretase (ADAM10-E348A-HA; ADAM10-dn). For behavioral examination a F1 ge…
Pneumatosis cystoides intestinalis
1977
Bei der Pneumatosis cystoides intestinalis handelt es sich um Gascysten von Stecknadelkopf- bis Kirschgrose, die sich in der Wand des Dunndarms, des Coecums und im linksseitigen Dickdarm finden. Aber auch ein Befall des gesamten Colons ist beschrieben worden. Die Erkrankung kann in jeder Altersstufe auftreten. Histologisch lassen sich bei Serienschnitten kommunizierende Systeme von Gascysten nachweisen, die bei Jugendlichen submucos und im hoheren Alter subseros liegen. Die Zusammensetzung des Gases entspricht der der Atemluft.
Technik der Mesohepatektomie
2016
Bei Patienten mit einer primar oder sekundar malignen zentralen Leberraumforderung stellt die Resektion im Sinne einer erweiterten Hemihepatektomie rechts bzw. links das Standardverfahren dar. Unter Berucksichtigung der erhohten Morbiditat und Mortalitat bei erweiterten Resektionen und dem Aspekt des hohen Verlusts an gesundem Lebergewebe stellt die zentrale Leberresektion oder Mesohepatektomie (Resektion der Segmente 4a/4b, 5 und 8) mit oder ohne Resektion des Segments 1 eine technisch anspruchsvolle und weiterhin selten genutzte Alternative dar. Die Resektionsgrenzen liegen rechtsseitig des Lig. falciforme und auf der oft schwierig zu identifizierenden Grenze zwischen den Segmenten 5/6 so…
Spatially localized solutions of the Hammerstein equation with sigmoid type of nonlinearity
2016
Abstract We study the existence of fixed points to a parameterized Hammerstein operator H β , β ∈ ( 0 , ∞ ] , with sigmoid type of nonlinearity. The parameter β ∞ indicates the steepness of the slope of a nonlinear smooth sigmoid function and the limit case β = ∞ corresponds to a discontinuous unit step function. We prove that spatially localized solutions to the fixed point problem for large β exist and can be approximated by the fixed points of H ∞ . These results are of a high importance in biological applications where one often approximates the smooth sigmoid by discontinuous unit step function. Moreover, in order to achieve even better approximation than a solution of the limit proble…