Search results for "Dame"
showing 10 items of 1466 documents
Selective photocatalytic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxaldehyde by polymeric carbon nitride-hydrogen peroxide adduct
2018
Abstract Polymeric carbon nitride-hydrogen peroxide adduct (PCN-H2O2) has been prepared, thoroughly characterised and its application for selective photocatalytic conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxaldehyde (FDC) in aqueous suspension has been studied. The PCN-H2O2 adduct is stable in aqueous suspension under UV and solar irradiation up to 100 °C. It is also stable up to 200 °C if heated in air, while at temperatures close to 300 °C its decomposition takes place. Based on the obtained characterisation data it has been proposed that H2O2 attaches to the non-polymerised carbon nitride species and to the heptazine nitrogen atoms, thus producing strong hydrogen bond…
Mutual learning: exploring collaboration, knowledge and roles in the development of recovery-oriented services. A hermeneutic-phenomenological study
2021
ABSTRACT Purpose The concept of recovery is commonly described as multifaceted and contested in the field of mental health and substance abuse. The aim of this study is to explore how understandings of recovery and recovery orientation of services are developed through daily practices and collaboration between service users and professionals. Methods Eight pairs of participants were interviewed together, in accordance with the dyadic interview method. The dyads/pairs consisted of service users and professional helpers. A collaborative hermeneutic-phenomenological analysis was used to analyse data. Results Data were analysed into three overarching and entangled themes, exploring how recovery…
Hermeneutics and Phenomenology Problems When Applying Hermeneutic Phenomenological Method in Educational Qualitative Research
2020
Hermeneutic phenomenology is a research method used in qualitative research in the fields of education and other human sciences, for example nursing science. It is a widely used method example in Scandinavia, and Van Manen is well known for his hermeneutic phenomenological method. In many studies the hermeneutic phenomenological method is inarticulate or ambiguous. Researchers generally lack a common understanding of what this method actually is. One reason for that is that the expression “hermeneutic phenomenological method” is contradiction in terms. Hermeneutics and phenomenology have their own distinct history. Hermeneutics and phenomenology as philosophical disciplines have their own d…
Gadamer’s Hermeneutics of Space
2017
International audience
dentity Narrative in informal family and non-family caregivers of people on dialysis
2019
Objetivo. Explorar la identidad narrativa de las cuidadoras informales familiares o no, de personas en diálisis. Método. Entrevistas en profundidad a 9 cuidadoras de personas de programas de Hemodiálisis o Diálisis Peritoneal del Hospital General Universitario. Se obtuvo autorización del Comité de Ética y los consentimientos informados de los participantes. El análisis se hizo desde la Teoría Fundamentada. Las narraciones transcritas y codificadas fueron sometidas a reflexión hermenéutica. Resultados. La enfermedad genera un impacto y las cuidadoras asumen el cuidado como pueden. Surge el sentimiento de “cuidado como destino” y como dotación intrínseca de “ser mujer”, percibido como una esp…
Nothing matters: the significance of the unidentifiable, the superficial and nonsense
2019
ABSTRACT Purpose: The aim of this study is to explore the ways in which “small things” may be of importance for people with mental health difficulties. Method: Empirical material from three different studies was reanalysed through a phenomenological, dialogical, approach. Results: We discovered some paradoxical aspects of small things: i.e., they could be about “something” that was difficult or even impossible to identify. The unidentifiable could be about bodily, sensual experiences that are superficial (i.e., belonging to the surface). The interaction with others highlighted as significant could be about doing something fun, talking nonsense or kidding around, and hence not at all about m…
Degradation of 4-nitrophenol (4-NP) using Fe-TiO2 as a heterogeneous photo-Fenton catalyst
2010
Heterogeneous photocatalysis for selective partial oxidation reactions in aqueous suspension
2018
Heterogeneous photocatalysis for selective partial oxidation reactions in aqueous suspension
Supported H3PW12O40 for 2-propanol (photo-assisted) catalytic dehydration in gas-solid regime: The role of the support and of the pseudo-liquid phase…
2016
Abstract Catalytic and photocatalytic 2-propanol dehydration was carried out by using a supported Keggin heteropolyacid H3PW12O40 (PW12). Binary materials were prepared by impregnation and/or solvothermal treatment by using commercial supports: SiO2 (Mallinckrodt), TiO2 (Evonik P25) and multiwall carbon nanotubes (Sunnano) or home solvothermically prepared SiO2 and TiO2. All the materials have been characterized by X-ray diffraction (XRD), scanning electron microscopy observations (SEM) coupled with EDX microanalysis, specific surface area measurements, diffuse reflectance spectroscopy (DRS), FTIR and Raman spectroscopy. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regim…
Domain walls in supersymmetric QCD: The taming of the zoo
2000
We provide a unified picture of the domain wall spectrum in supersymmetric QCD with Nc colors and Nf flavors of quarks in the (anti-) fundamental representation. Within the framework of the Veneziano-Yankielowicz-Taylor effective Lagrangian, we consider domain walls connecting chiral symmetry breaking vacua, and we take the quark masses to be degenerate. For Nf/Ncm** there is no domain wall. We numerically determine m* and m** as a function of Nf/Nc, and we find that m** approaches a constant value in the limit that this ratio goes to one.