9,933 research outputs found
From longing to belonging: Tracing the emotional geographies of ageing Filipina migrants in Valencia, Spain
As a consequence of neoliberalism of the global economy, the feminisation of labour has resulted in a care chain that draws women from the global south to leave their homes and families for higher salaries in the global north. Worldwide, it is an increasing concern, but policies are barely in place to
safeguard the conditions of migrant workers, and those that exist are poorly enforced. The Philippines is one of the largest sending countries in the world. It is widely acknowledged that through their remittances, they sustain their families and the Philippine economy. Much literature has examined the phenomenon from perspectives of the families (specifically, children left behind) and their channels of communication, as well as what happens after they return from working overseas, but the emotional experiences of women who decide not to return but instead, build a life for themselves and their partners and families in the receiving country have been understudied.
From conversations with women from the Philippines who have lived in Spain for more than 10
years, using the decolonising methodology of Sikolohiyang Pilipino ("Philippine Psychology"), this research gives place for their voices to be heard as they negotiate self-identity. Their narratives reflect
Philippine emotional culture, particularly that of utang na loob and pag-aaruga. Their individual life stories may be unique, but they have experienced and continue to experience similar concerns. This research traces the trajectory of the emotional geographies of ageing Filipina migrants in
Valencia, Spain by examining the church as an emotional site and the emotional strategies that Filipina migrants use in the process of be/longing.Como consecuencia del neoliberalismo de la economía mundial, la feminización del trabajo ha dado lugar a una cadena de cuidados que atrae a las mujeres del sur global a abandonar sus hogares y
familias por salarios más altos en el norte global. En todo el mundo, esta es una preocupación cada vez
mayor, pero apenas existen políticas para salvaguardar las condiciones de los trabajadores migrantes, y las que existen están mal aplicadas.
Las Filipinas es uno de los países emisores más grandes del mundo. Es ampliamente reconocido que a través de sus remesas, sostienen a sus familias y a la economía Filipina. Existe una vasta literatura
que ha examinado el fenómeno desde perspectivas de las familias (específicamente, los niños y niñas dejados atrás) y sus canales de comunicación, así como lo que tras regresar de trabajar en el extranjero, pero las experiencias emocionales de las mujeres que deciden no regresar y construir una vida para sí mismas y sus parejas y familias en el país receptor han sido poco estudiados.
A partir de las conversaciones con mujeres de Filipinas que han vivido en España durante más de 10 años y utilizando la metodología descolonizadora de Sikolohiyang Pilipino (Psicología Filipina), esta investigación trata de ofrecer un lugar desde el que sus voces, en la constante negociación de la identidad
propia, puedan ser escuchadas. Sus narraciones reflejan la cultura emocional de Filipinas, particularmente la de utang na loob y pag-aaruga. Sus historias de vida individuales pueden ser únicas, pero han
experimentado y siguen experimentando preocupaciones similares. Esta investigación traza la trayectoria de las geografías emocionales del envejecimiento de migrantes Filipinas en Valencia, España examinando la iglesia como un lugar emocional así como las estrategias emocionales que utilizan en proceso de be/longing.MÁSTER ERASMUS MUNDUS GEMMA. XI EDICIÓ
Characterisation and imaging of cortical impedance changes during interictal and ictal activity in the anaesthetised rat.
Epilepsy affects approximately 50 million people worldwide, and 20-30% of these cases are refractory to antiepileptic drugs. Many patients with intractable epilepsy can benefit from surgical resection of the tissue generating the seizures; however, difficulty in precisely localising seizure foci has limited the number of patients undergoing surgery as well as potentially lowered its effectiveness. Here we demonstrate a novel imaging method for monitoring rapid changes in cerebral tissue impedance occurring during interictal and ictal activity, and show that it can reveal the propagation of pathological activity in the cortex. Cortical impedance was recorded simultaneously to ECoG using a 30-contact electrode mat placed on the exposed cortex of anaesthetised rats, in which interictal spikes (IISs) and seizures were induced by cortical injection of 4-aminopyridine (4-AP), picrotoxin or penicillin. We characterised the tissue impedance responses during IISs and seizures, and imaged these responses in the cortex using Electrical Impedance Tomography (EIT). We found a fast, transient drop in impedance occurring as early as 12ms prior to the IISs, followed by a steep rise in impedance within ~120ms of the IIS. EIT images of these impedance changes showed that they were co-localised and centred at a depth of 1mm in the cortex, and that they closely followed the activity propagation observed in the surface ECoG signals. The fast, pre-IIS impedance drop most likely reflects synchronised depolarisation in a localised network of neurons, and the post-IIS impedance increase reflects the subsequent shrinkage of extracellular space caused by the intense activity. EIT could also be used to picture a steady rise in tissue impedance during seizure activity, which has been previously described. Thus, our results demonstrate that EIT can detect and localise different physiological changes during interictal and ictal activity and, in conjunction with ECoG, may in future improve the localisation of seizure foci in the clinical setting
Probing the Effects of the Well-mixed Assumption on Viral Infection Dynamics
Viral kinetics have been extensively studied in the past through the use of
spatially well-mixed ordinary differential equations describing the time
evolution of the diseased state. However, emerging spatial structures such as
localized populations of dead cells might adversely affect the spread of
infection, similar to the manner in which a counter-fire can stop a forest fire
from spreading. In a previous publication (Beauchemin et al., 2005), a simple
2-D cellular automaton model was introduced and shown to be accurate enough to
model an uncomplicated infection with influenza A. Here, this model is used to
investigate the effects of relaxing the well-mixed assumption. Particularly,
the effects of the initial distribution of infected cells, the regeneration
rule for dead epithelial cells, and the proliferation rule for immune cells are
explored and shown to have an important impact on the development and outcome
of the viral infection in our model.Comment: LaTeX, 12 pages, 22 EPS figures, uses document class REVTeX 4, and
packages float, graphics, amsmath, and SIunit
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Investigation of a SPR based refractive index sensor using a single mode fiber with a large D shaped microfluidic channel
In this work, a highly sensitive surface plasmon resonance (SPR) sensor based on a single mode fiber (SMF) incorporating a large microfluidic channel (MFC) for refractive index (RI) sensing is designed and optimized using a full-vectorial finite element method (FEM). The fluidic channel size can be varied according to the requirement due to the availability of the large cladding diameter of SMF, which makes it simple and easy to fabricate. The proposed novel sensor is favourable to both analytes and metallic strips. The D-shaped hollow section above the core is filled with the measurand analytes and a gold (Au) strip is deposited on the base of the MFC, as it is known as the most attractive metal for SPR. Our numerical simulations illustrate that the confinement loss of the designed sensor is highly influenced by the distance of the MFC from the core along with the width and thickness of the Au strip. The designed sensor shows an average sensitivity of 1350 nm/RIU and maximum sensitivity of 8250 nm/RIU in the sensing range of 1.33-1.35 and 1.41-1.43, respectively. However, for a small variation of na at a step of 0.005, within ranges like 1.415, 1.420, and 1.425, we have achieved a maximum sensitivity of 7000 nm/RIU, 9000 nm/RIU and 11000 nm/RIU, respectively. This novel SPR sensor with MFC can open up a new opportunity in the application of chemical and biological sensing
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Single cell analysis reveals immune cell-adipocyte crosstalk regulating the transcription of thermogenic adipocytes.
Immune cells are vital constituents of the adipose microenvironment that influence both local and systemic lipid metabolism. Mice lacking IL10 have enhanced thermogenesis, but the roles of specific cell types in the metabolic response to IL10 remain to be defined. We demonstrate here that selective loss of IL10 receptor α in adipocytes recapitulates the beneficial effects of global IL10 deletion, and that local crosstalk between IL10-producing immune cells and adipocytes is a determinant of thermogenesis and systemic energy balance. Single Nuclei Adipocyte RNA-sequencing (SNAP-seq) of subcutaneous adipose tissue defined a metabolically-active mature adipocyte subtype characterized by robust expression of genes involved in thermogenesis whose transcriptome was selectively responsive to IL10Rα deletion. Furthermore, single-cell transcriptomic analysis of adipose stromal populations identified lymphocytes as a key source of IL10 production in response to thermogenic stimuli. These findings implicate adaptive immune cell-adipocyte communication in the maintenance of adipose subtype identity and function
Giant Barocaloric Effect at the Spin Crossover Transition of a Molecular Crystal
The first experimental evidence for a giant, conventional barocaloric effect (BCE) associated with a pressure‐driven spin crossover transition near room temperature is provided. Magnetometry, neutron scattering, and calorimetry are used to explore the pressure dependence of the SCO phase transition in polycrystalline samples of protonated and partially deuterated [FeL2][BF4]2 [L = 2,6‐di(pyrazol‐1‐yl)pyridine] at applied pressures of up to 120 MPa (1200 bar). The data indicate that, for a pressure change of only 0–300 bar (0–30 MPa), an adiabatic temperature change of 3 K is observed at 262 K or 257 K in the protonated and deuterated materials, respectively. This BCE is equivalent to the magnetocaloric effect (MCE) observed in gadolinium in a magnetic field change of 0–1 Tesla. The work confirms recent predictions that giant, conventional BCEs will be found in a wide range of SCO compounds
Can we (control) Engineer the degree learning process?
This paper investigates how control theory could be applied to learning processes in engineering education. The initial point for the analysis is White’s Double Loop learning model of human automation control modified for the education process where a set of governing principals is chosen, probably by the course designer. After initial training the student decides unknowingly on a mental map or model. After observing how the real world is behaving, a strategy to achieve the governing variables is chosen and a set of actions chosen. This may not be a conscious operation, it maybe completely instinctive. These actions will cause some consequences but not until a certain time delay. The current model is compared with the work of Hollenbeck on goal setting, Nelson’s model of self-regulation and that of Abdulwahed, Nagy and Blanchard at Loughborough who investigated control methods applied
to the learning process
How to Identify and Separate Bright Galaxy Clusters from the Low-frequency Radio Sky?
In this work we simulate the MHz radio sky that is constrained in
the field of view ( radius) of the 21 Centimeter Array (21CMA), by
carrying out Monte-Carlo simulations to model redshifted cosmological
reionization signals and strong contaminating foregrounds, including emissions
from our Galaxy, galaxy clusters, and extragalactic point sources. As an
improvement of previous works, we consider in detail not only random variations
of morphological and spectroscopic parameters within the ranges allowed by
multi-band observations, but also evolution of radio halos in galaxy clusters,
assuming that relativistic electrons are re-accelerated in the ICM in merger
events and lose energy via both synchrotron emission and inverse Compton
scattering with CMB photons. By introducing a new approach designed on the
basis of independent component analysis (ICA) and wavelet detection algorithm,
we prove that, with a cumulative observation of one month with the 21CMA array,
about of galaxy clusters with central brightness temperatures of at 65 MHz can be safely identified and separated from the
overwhelmingly bright foreground. We find that the morphological and
spectroscopic distortions are extremely small as compared to the input
simulated clusters, and the reduced of brightness temperature profiles
and spectra are controlled to be and ,
respectively. These results robustly indicate that in the near future a sample
of dozens of bright galaxy clusters will be disentangled from the foreground in
21CMA observations, the study of which will greatly improve our knowledge about
cluster merger rates, electron acceleration mechanisms in cluster radio halos,
and magnetic field in the ICM.Comment: 35 pages, 10 figures, Accepted for publication in The Astrophysical
Journa
A review of low-level air pollution and adverse effects on human health: implications for epidemiological studies and public policy
The aim of this study was to review original scientific articles describing the relationship between atmospheric pollution and damage to human health. We also aimed to determine which of these studies mentioned public policy issues
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