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Exposure to environmental factors is generally expected to cause degradation in perovskite films and solar cells. Herein, we show that films with certain defect profiles can display the opposite effect, healing upon exposure to oxygen under illumination. We tune the iodine content of methylammonium lead triiodide perovskite from understoichiometric to overstoichiometric and expose them to oxygen a
Liquid water within the cathode Gas Diffusion Layer (GDL) and Gas Channel (GC) of Proton Exchange Membrane Fuel Cells (PEMFCs) is strongly coupled to gas transport properties, thereby affecting the electrochemical conversion rates. In this study, the GDL and GC regions are utilized as the simulation domain, which differs from previous studies that only focused on any one of them. A Volume of Fluid
Background: Pulmonary hypertension (PH) is frequent in patients with heart failure and reduced ejection fraction (HFrEF) with 2 different phenotypes: isolated postcapillary PH (IpcPH) and, with the worst prognosis, combined pre- and postcapillary PH (CpcPH). The aims of the present echocardiography study were to investigate (1) the ability to identify PH phenotype in patients with HFrEF using the
Är det något särskilt med äldres missbruksproblem? Finns det en ålder då samhället bör ge upp ambitionen att ge behandling och i stället sträva efter att skapa ett värdigt liv? Är lågtröskelboenden där äldre får fortsätta missbruka en värdig och human lösning? Eller ett uttryck för ålderism där samhället ger upp ambitionen att förändra livet för äldre personer?
För många är åldrandet relativt problemfritt, även om sjukdomar och funktionsnedsättningar blir vanligare ju längre vi lever. Vid sidan av problemfriheten finns det olika typer av utsatthet, utmaningar och bekymmer som kan drabba äldre på ett särskilt sätt. Det kan handla om alltifrån missbruk och ensamhet till svårigheter att betala räkningar i ett samhälle som blir allt mer digitalt. Den här ant
Moral economy studies have investigated public opinion as to who should get what and why, and concluded that older people constitute a group that is perceived to deserve and be in need of support from society. A weakness of the approach is that the category of older people is taken for granted and specific age-limits are left unproblematized. The present study investigates views among municipal ne
Recension av Lena Johannesson, Ellen Keys vänstra öga - om karikatyren i Sverige.
The growing awareness of an impending environmental crisis coupled with a series of national and regional environmental disasters led, in the 1960s and 1970s, to the birth of the global environmental movement and the widespread recognition of the need to protect the environment for both current and future generations. Against this backdrop the concept of 'environmental rights' surfaced as a means
Connected autonomous vehicles can significantly improve the safety and mobility of urban transportation systems. However, these systems are vulnerable to model uncertainties, wireless communication impairments, and external disturbances. In this article, we propose a new autonomous intersection management (AIM) system, called hierarchical model predictive control (HMPC). In HMPC, the intersection
Men with a low prostate-specific antigen (PSA) level (<1 ng/ml) in midlife may extend the rescreening interval (if aged 40–59 yr) or forgo future PSA screening (if aged >60 yr) owing to their low risk of aggressive prostate cancer (PCa). However, there is a subset of men who develop lethal PCa despite low baseline PSA. We investigated how a PCa polygenic risk score (PRS) in addition to baseline PS
In this paper a Maximum likelihood estimation algorithm for Finite Impulse Response Errors-in-Variables systems is developed. We consider that the noise-free input signal is Gaussian-mixture distributed. We propose an Expectation-Maximization-based algorithm to estimate the system model parameters, the input and output noise variances, and the Gaussian mixture noise-free input parameters. The bene
The problem of state estimation of a linear, dynamical state-space system where the output is subject to quantization is challenging and important in different areas of research, such as control systems, communications, and power systems. There are a number of methods and algorithms to deal with this state estimation problem. However, there is no consensus in the control and estimation community o
This study examines whether and to what extent the bandwagon effect and the spiral of silence impact opinion formation in a polarized context, where individuals tend to be persistent in their policy attitudes. Focusing on contentious policy issues at the heart of the culture war in American politics, our aim is to study the relative importance of attitude persistence and social conformity in the o
From the end of the nineteenth century and one hundred years onward, home sewing was an important part of many women’s duties, but it was also a pleasure, something that existed parallel with the emerging mass-produced ready-to-wear industry. The paper patterns used for home dressmaking were often sold and distributed through women’s magazines. These pattern sections were both a kind of reader serFrom the end of the nineteenth century and one hundred years onward, home sewing was an important part of many women’s duties, but it was also a pleasure, something that existed parallel with the emerging mass-produced ready-to-wear industry. The paper patterns used for home dressmaking were often sold and distributed through women’s magazines. These pattern sections were both a kind of reader ser
Although invasive species are recognized as a major threat to freshwaters, little is known about how future climate warming will affect the success of invaders. Ecosystems are also often simultaneously impacted by multiple, potentially interacting, invading species and the management of species invasions can be incredibly difficult. Sensitive methods such as environmental DNA (eDNA) metabarcoding,
