Search results for "TATA"

A Survey of Prostate Segmentation Methodologies in Ultrasound, Magnetic Resonance and Computed Tomography Images

2012

Prostate segmentation is a challenging task, and the challenges significantly differ from one imaging modality to another. Low contrast, speckle, micro-calcifications and imaging artifacts like shadow poses serious challenges to accurate prostate segmentation in transrectal ultrasound (TRUS) images. However in magnetic resonance (MR) images, superior soft tissue contrast highlights large variability in shape, size and texture information inside the prostate. In contrast poor soft tissue contrast between prostate and surrounding tissues in computed tomography (CT) images pose a challenge in accurate prostate segmentation. This article reviews the methods developed for prostate gland segmenta…

Primi risultati sulla disidratazione del mango siciliano: un prodotto nuovo che fa bene alla salute

2021

Prendendo spunto dall’essiccazione al sole, tecnica antica legata alla nostra tradizione utilizzata per conservare a lungo frutti e ortaggi, abbiamo disidratato il mango siciliano in corrente di aria calda, ottenendo un prodotto nuovo, naturale, ricco di colore, aroma e gusto

With great power comes great responsibilities – Examining platform-based mechanisms and institutional trust in rideshare services

2023

From the perspective of female passengers, much remains unknown about institutional or platform trust and the sharing economy. The present study was conducted in an emerging economy context to comprehend the significance of institutional trust. The study aimed to develop a dynamic theoretical model incorporating the perceived effectiveness of platform-based institutional structures (PEPIS) as a dependent variable in sharing economy platforms, examine the antecedents of PEPIS and determine how PEPIS affects female passengers' trust in the institution or platform. Different strata of female passengers were targeted using a quota-cum-purposive sampling method. In total, 413 useable responses t…

Personnalité, stratégies d'approvisionnement et d'appariement chez les Diamants Mandarins (taeniopygia guttata)

2011

In evolutionary biology, phenotypic variation has for a long time been considered as the raw material on which natural selection acts. However, research on the consistency of behaviour led to the development of the animal personality concept during the 1990s. This concept was based on the characterization of traits such as neophobia, aggressiveness, exploratory tendencies and risk-taking behaviour. Since then, several studies have shown that personality can evolve through natural selection and is related to many life-history traits, such as dispersal or anti-predator behaviour.Pairing strategies and foraging strategies are two fundamental components of an organism’s life, but their relation…

La Media Education a scuola. I primi risultati di una ricerca nelle scuole statali palermitane

2008

Plant-ant interaction in xerophilous ephemeral vegetation of S.E. Sardinia.

2003

Frequency and abundance of annual plants have been measured in 40 square plots, 0.36 m2 each, settled in an area of approximately 5 ha at the foothill of the Sarrabus massif, in S.E. Sardinia. 20 plots were randomly distributed at less than 5 m from the ant nests, further 20 at more than 30 m from the ants nests. The results showed a significantly lower plant density next to the ant nests, together with an higher species richness. Far from the nests, plots resulted dominated by relatively few species with a patchy distribution, while next to the nests the distribution of frequencies resulted more homogeneous. It is suggested that harvesting ants may contribute to the small-scale regulation …

Functional characterization of Tat protein from human immunodeficiency virus. Evidence that Tat links viral RNAs to nuclear matrix.

1990

The processes of transcription and posttranscription are assumed to proceed in close association with the nuclear matrix. In this study we demonstrated that Tat, the trans-activating protein from human immunodeficiency virus type 1 (HIV-1), binds both to the TAR region of the nascent HIV mRNAs and the nuclear matrix with high affinity. Both North/Western blotting experiments and nitrocellulose binding studies revealed that Tat binds with an association constant (K alpha) of approximately 1 x 10(9) M-1 to the TAR segment of HIV RNA; binding of Tat to this sequence which is present between position 32 and 82 downstream from the TATA box was also confirmed by gel retardation assays. Binding of…

Influence of Foot Type on the Clinical Outcome of Minimally Invasive Surgery for Metatarsalgia. A Prospective Pilot Study

2021

Background and aims: Surgical procedures for central metatarsalgia seek to harmonise the metatarsal parabola with osteotomies that can be performed by minimally invasive techniques. However, the possible relationship of the foot type and the mid-term postoperative outcome is poorly described. The objective of this prospective pilot study was therefore to determine whether the foot type (pronate, neutral, or supinate) conditions the postoperative mid-term functional outcome.Methods: A series of 28 patients (6 men, 22 women) were treated for primary central metatarsalgia by means of minimally invasive distal metaphyseal osteotomy (DMMO).Results: Their functional outcomes at 6 and 12 months we…

Chimeric Free Vascularized Metatarsophalangeal Joint With Toe Fillet Flap: A Technique for Reconstruction of the Posttraumatic Metacarpophalangeal Jo…

2018

For painful, dysfunctional, posttraumatic metacarpophalangeal (MCP) joints, the free vascularized toe joint transfer may represent a good solution. Successful reconstruction is potentially limited, however, by 2 features of the traditional vascularized metatarsophalangeal (MTP) transfer: inadequate arc of flexion and insufficient soft tissue coverage. The solution to both of these dilemmas lies in the manner of utilizing the donor site. Because of its innate hyperextensibility, rotating the MTP 180° volar to dorsal provides the greatest arc of flexion in the reconstructed MCP. Excellent soft tissue coverage can be provided by elevating the skin paddle of the transferred second toe as a chim…

Integrazione di metodologie dirette ed indirette per la stima degli idrogrammi di piena in alvei naturali

2010

Le metodologie attualmente disponibili per la misura di pieno campo delle portate possono essere classificate in base al tipo di sensore utilizzato ed al numero delle stazioni idrometriche. Per ognuna delle possibili tipologie vengono presentate le tecniche di analisi più recenti e delineati possibili sviluppi futuri. Viene quindi introdotta una nuova metodologia, basata sull’integrazione di misure dirette ed indirette. Nell’approccio proposto la portata viene calcolata come valore al contorno di monte di un modello di propagazione 1D a cui vengono assegnati i tiranti di monte quale condizione misurata. Il modello viene calibrato attraverso sporadiche misure istantanee di velocità, consente…