Search results for " frame"

Identification of Flow-Limiting Coronary Stenosis With PCS: A New Cost-Effective Index Derived From the Product of Corrected TIMI Frame Count and Per…

2021

Background: Identifying functional coronary stenosis with simple and cost-effective methods during invasive coronary angiography is still challenging. Corrected TIMI frame count (CTFC) is considered to be the frame count velocity of coronary blood flow. We aimed to propose a simple and cost-effective index based on CTFC and percent diameter stenosis (DS) to identify flow-limiting coronary stenosis. For this, a new index was put forward as the product of CTFC and DS (PCS). PCS can be regarded as the loss of coronary blood flow due to diameter stenosis.Methods: DS, CTFC, PCS, and Fractional flow reserve (FFR) of 111 vessels in 84 patients with suspected coronary heart disease were measured. F…

Exploiting the Potential of New Coordination Frameworks for Technological Applications – from Temperature Sensing to Magnetic Storage

2022

Esta tesis es sobre el diseño, síntesis y caracterización de nuevos Polimeros de Coordinación (CPs), porosos o no, que muestran propiedades magnéticas y/o ópticas, para explotar su potencial en diversas aplicaciones tecnológicas. El diseño de estos materiales requiere una atención particular en la selección de los componentes básicos moleculares, los ligandos orgánicos y los nodos metálicos. Para construir CP con diferentes propiedades físicas, se han elegido derivados de carboxilato y anilato. En particular, el ácido 1,3,5-bencentricarboxílico (H3BTC, ácido trimésico), un ligando bioacompatible que permite construir polimeros organometálicos 3D robustos, y el 3,6-ditriazolil-2,5 -dihidroxi…

Decomposition Process of Carboxylate MOF HKUST-1 Unveiled at the Atomic Scale Level

2016

HKUST-1 is a metal-organic framework (MOF) which plays a significant role both in applicative and basic fields of research, thanks to its outstanding properties of adsorption and catalysis but also because it is a reference material for the study of many general properties of MOFs. Its metallic group comprises a pair of Cu2+ ions chelated by four carboxylate bridges, forming a structure known as paddle-wheel unit, which is the heart of the material. However, previous studies have well established that the paddle-wheel is incline to hydrolysis. In fact, the prolonged exposure of the material to moisture promotes the hydrolysis of Cu-O bonds in the paddle-wheels, so breaking the crystalline n…

From 1D coordination polymers to Metal Organic Frameworks by the use of 2-pyridyl oximes.

2020

The synthesis and characterization of coordination polymers and metal&ndash

Alkali-Metal Azides Interacting with Metal–Organic Frameworks

2013

Metrics Framework for Cycle-Time Reduction in Software Value Creation

2015

Agile software development methodologies driving cycle-time reduction have been shown to improve efficiency, enable shorter lead times and place a stronger focus on customer needs. They are also moving the process development focus from cost-reduction towards value creation. Optimizing software development based on lean and agile principles requires tools and metrics to optimize against. We need a new set of metrics that measure the process up to the point of customer use and feedback. With these we can drive cycle time reduction and improve value focus. Recently the lean startup methodology has been promoting a similar approach within the startup context. In this paper, we develop and vali…

Advances in mobile financial services: a review of the literature and future research directions

2022

PurposeUsing the theory, construct, method, moderator (TCMM) format, this framework-based review critically analyses the mobile financial services (MFSs) field through a detailed synthesis and analysis of a sample of mainstream empirical research published in various scientific journals within the period 2009–2020.Design/methodology/approachThe authors followed a three-step structured approach suggested by Webster and Watson (2002) to search for the literature to synthesise the global perspectives on MFSs and their associated applications and systems. The literature research resulted in the identification of 115 most relevant articles.FindingsThe authors identified three major categories or…

On the Fundamental Period of Infilled RC Buildings

2015

This paper investigates the fundamental period of vibration of RC buildings by means of finite element macro-modelling and modal eigenvalue analysis. As a base study, a number of 14-storey RC buildings have been considered \"according to code designed\" and \"according to code non-designed\". Several parameters have been studied including the number of spans; the span length in the direction of motion; the stiffness of the infills; the percentage openings of the infills and; the location of the soft storeys. The computed values of the fundamental period are compared against those obtained from seismic code and equations proposed by various researchers in the literature. From the analysis of…

Il pagamento al creditore apparente nella prospettiva di un diritto europeo dell'obbligazione

2009

Il saggio analizza l’istituto del pagamento al creditore apparente e ne offre una rilettura in chiave di modi di estinzione dell’obbligazione diverso dell’inadempimento fondato sulla rottura del nesso di correlazione tra debito e credito. Lo studio del pagamento al creditore apparente offre, inoltre, una decisiva conferma della nozione di obbligazione come rapporto giuridico al cui interno trovano la sintesi due situazioni giuridiche dal contenuto diverso: il debito e il credito. La diversità di contenuto di debito e credito rappresenta la più significativa caratteristica dell’obbligazione e fa segnare la distanza dalla nozione tradizionale di obbligazione connotata invece dalla specularità…

About time

2019

Purpose The purpose of this paper seeks to develop a motivation-based complementary framework for temporally dynamic user preferences to facilitate optimal timing in web personalisation. It also aims to highlight the benefits of considering user motivation when addressing issues in temporal dynamics. Design/methodology/approach Through theory, a complementary framework and propositions for motivation-based temporal dynamics for further testing are created. The framework is validated by feeding back findings, whereas some of the propositions are validated through an experiment. Findings The suggested framework distinguishes two ways (identifying/learning and shifting) of using a motive-base…