Climate action in urban mobility: personal and political transformations

Although many municipalities have climate action plans with targets and goals, effective climate action still faces significant implementation gaps. Implementation can falter due to barriers for the deployment of low-carbon solutions, as well as the lack of 'cultural, systemic, and psychological support' for such solutions. Cultural drivers and perceptions shape citizens’ behaviors and can perpetuate carbon-intensive lifestyles. This paper focuses on measures in climate action planning in the Metro Vancouver region of Canada regarding transportation, which remains the largest single source of greenhouse gas emissions and has a low chance of reaching its emissions-reductions targets. Shifting towards greater sustainability will entail a challenge of transformative change, involving shifts in systems, behaviors, worldviews, and cultures. In implementation, the full complexity of the climate action challenge becomes most evident. A scoping review of climate action documentation and semi-structured interviews are used to examine (1) barriers to effective implementation, (2) socio-cultural perceptions and approaches to public engagement and (3) novel areas for transformational action. The study found a need to reweight the focus of climate action, which is predominantly set on techno-managerial efforts, also to include communication, narratives and broader systems change, which are the key barriers to low-carbon urban mobility.   'Practice relevance' Transportation remains a significant source of greenhouse gases and air pollutants in urban areas. To effectively shrink emissions, novel approaches are needed that go beyond technical fixes and view climate action as a challenge of transformative change. This study identifies the dominance of (1) 'practical', techno-managerial solutions, yet notes an inadequate focus brought to (2) the 'political' restructuring of systems and developmental trajectories pertaining to mobility and (3) thepersonal aspects of social perceptions and culture. Recommendations are made about how to better account for the deeper human dimensions that present persistent barriers to climate action in transportation by reweighting the focus to include the personal and political spheres of transformation

Life beyond 30: Probing the −20 < M UV < −17 Luminosity Function at 8 < z < 13 with the NIRCam Parallel Field of the MIRI Deep Survey

We present the ultraviolet luminosity function and an estimate of the cosmic star formation rate density at 8 8 galaxy candidates based on their dropout nature in the F115W and/or F150W filters, a high probability for their photometric redshifts, estimated with three different codes, being at z > 8, good fits based on χ2 calculations, and predominant solutions compared to z < 8 alternatives. We find mild evolution in the luminosity function from z ∼ 13 to z ∼ 8, i.e., only a small increase in the average number density of ∼0.2 dex, while the faint-end slope and absolute magnitude of the knee remain approximately constant, with values α = − 2.2 ± 0.1, and M* = − 20.8 ± 0.2 mag. Comparing our results with the predictions of state-of-the-art galaxy evolution models, we find two main results: (1) a slower increase with time in the cosmic star formation rate density compared to a steeper rise predicted by models; (2) nearly a factor of 10 higher star formation activity concentrated in scales around 2 kpc in galaxies with stellar masses ∼108M⊙ during the first 350 Myr of the universe, z ∼ 12, with models matching better the luminosity density observational estimations ∼150 Myr later, by z ∼ 9

Programación infográfica para la representación de los huesos y articulaciones del miembro inferior

Desarrollo de una infografía con los huesos y articulaciones del miembro inferior para mejorar el proceso de enseñanza-aprendizaje en la docencia de la anatomía topográfica de estas estructuras a través del campus virtual (Grados de CC. de la Salud)

Elaboración de modelos anatómicos y embriológicos mediante la impresión 3D

La impresión 3D es un enfoque innovador en la docencia anatómica que puede proporcionar a los alumnos un material didáctico casi idéntico a la pieza embalsamada mitigando muchas de las múltiples controversias existentes en torno a la Disecció

G protein-coupled receptor-mediated calcium signaling in astrocytes

Astrocytes express a large variety of G~protein-coupled receptors (GPCRs) which mediate the transduction of extracellular signals into intracellular calcium responses. This transduction is provided by a complex network of biochemical reactions which mobilizes a wealth of possible calcium-mobilizing second messenger molecules. Inositol 1,4,5-trisphosphate is probably the best known of these molecules whose enzymes for its production and degradation are nonetheless calcium-dependent. We present a biophysical modeling approach based on the assumption of Michaelis-Menten enzyme kinetics, to effectively describe GPCR-mediated astrocytic calcium signals. Our model is then used to study different mechanisms at play in stimulus encoding by shape and frequency of calcium oscillations in astrocytes.Comment: 35 pages, 6 figures, 1 table, 3 appendices (book chapter

Energy convergence

As vehicles and road infrastructure become integrated, many new business models become possible. Buildings, electric cars and parking lots may become active participants in energy management schemes. 2017 Wall Scholar Walter Mérida explores the ethical, economic and social implications of transportation systems in a low-carbon economy.Applied Science, Faculty ofMechanical Engineering, Department ofUnreviewedFacult

Andean products and the perception of food for the elderly, nuevo amanecer dining room in Lima

This research aimed to establish the relationship between Andean products and the perception of the diet of the elderly of the Nuevo Amanecer dining room, Cercado de Lima, 2020, the research was of a descriptive correlational type and non-experimental design, the sample was of 175 older adults who attend the Nuevo Amanecer Dining Room, for the collection of data two questionnaires were used. According to the results, it was found that the use of Andean products in the Nuevo Amanecer dining room, Cercado de Lima is perceived as regular by 44% also 32% refer that it is used efficiently, that is, with great variety and frequency, but there was a 24% that said that the use of Andean products in the aforementioned dining room is presented at a deficient level. On the other hand, in the case of the perception of the diet of the elderly, it was observed that the diet of 56% is regular, of 24% is good and 20% is perceived to occur at a bad level.&nbsp

PEM fuel cell low flow FDI

In this work, a signal-based diagnostic methodology that can isolate PEM fuel cell low anode and cathode flow rates is introduced. The methodology is based on calculating symptoms of the faults, and comparing them versus thresholds that are calibrated a priori of real time operation. The novelty with the methodology is in using cell voltage oscillations, imposed by a small signal oscillation on the cathode output pressure, to isolate cathode flooding. Furthermore, it is shown in this work that the fixed reference cathode stoichiometry commonly used in the literature for isolating cathode starvation is not reliable and results in false alarms, and an adaptive scheme is proposed. It is also shown that a fixed stoichiometry scheme can be used to reliably isolate anode starvation. These measures are then used to design a signal-based diagnostic algorithm to isolate cathode flooding, cathode starvation, and anode starvation in real time. Finally, the robustness of the algorithm to changes in current, pressure, temperature, and humidity operating conditions is examined. © 2011 Elsevier Ltd. All rights reserved

Detection and isolation of PEM fuel cell low flow induced faults

In this work, a signal-based diagnostic methodology is introduced that can isolate PEM fuel cell low anode and cathode flow rates during real time operation of the system. The methodology is based on calculating symptoms of the faults, and comparing them versus thresholds measured prior to real time operation. The novelty with the methodology is in using cell voltage oscillations, imposed by a small signal oscillation on the cathode output pressure, to isolate cathode flooding. Furthermore, it is shown that the fixed reference cathode stoichiometry commonly used in the literature for isolating cathode starvation is not reliable and result in false alarms, and an adaptive scheme is proposed. It is also shown that a fixed stoichiometry scheme can be used to reliably isolate anode starvation