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Metals play a key role as a cornerstone of our modern society; they are part of the most basic elements of our daily life and have been part of our lifestyles for millennia. Current trends of metal production point out that developing countries in order to attain a developed-countries consumption level will require 3-9 times the present metal stock per capita, yet their mining practices are far fr
Countries around the world are employing renewable energy policies to increase renewable electricity in their electricity mix. Trinidad and Tobago (T&T), located in the Caribbean, has endogenous sources of oil and natural gas and has not yet capitalised on sources of renewable energy. The country‟s electricity is currently dominantly generated from natural gas however the natural gas reserves
In several circumstances, a level-three automated vehicle cannot continue driving in an automated driving mode and requests a human driver to take over. In this study, a series of experiments to examine how to provide a TOR was conducted. First, for forty-one persons, a HUD icon, earcon, seat vibration, and combinations were compared. The results indicated that the HUD icon-earcon and HUD icon-sea
E-poster, 2-minute presentation Statement of Problem Self-generated mobility, defined as the capacity for independent movement, plays a critical role in early childhood development. Limited mobility, often associated with conditions like cerebral palsy or muscular dystrophy, poses significant developmental delays, particularly impacting physical, social, and cognitive growth. Description of the Co
Combined density functional theory (DFT) and X-ray standing wave (XSW) studies have previously provided evidence for the preferential adoption of an inverted conformation of 2H-TPP on Cu(111) in contrast to the saddle conformation usually favored by porphyrin molecules adsorbed on metals. We experimentally demonstrate, via X-ray photoelectron spectroscopy (XPS) analysis, that the binding energies
False lumen management of chronic aortic dissections has evolved during the past decade. Thoracic endovascular aortic repair (TEVAR) continues to be the mainstay of endovascular dissection treatment and relies on the adequate sealing of the proximal entry tear. However, TEVAR alone often fails to achieve aortic remodeling due to persistent distal retrograde perfusion of the false lumen with contin
This report reviews the published results of searches for possible additional scalar particles and exotic decays of the Higgs boson performed by the ATLAS Collaboration using up to 140 fb−1 of 13 TeV proton–proton collision data collected during Run 2 of the Large Hadron Collider. Key results are examined, and observed excesses, while never statistically compelling, are noted. Constraints are plac
A few large fires in Lithium-ion battery systems are known to have been caused by leaking coolant, and experience from fire testing indicate that coolant can be the origin of violent fires triggered before the onset of thermal runaway in the battery. It is here hypothesized that the common coolants water and ethylene glycol can form flammable gases via electrolysis in the electrical environment fo
The primary aim of this study is to estimate crop evapotranspiration (ETc) and develop a land use map to support the sustainable management of water resources in the irrigated Tassaout perimeter of Tensift. This is achieved by combining a time series of high spatial resolution Sentinel-2 satellite images, meteorological data, and field data. The method is based on the relationships between normali
The Älvkarleby test dam, constructed in Sweden, was designed with several intentionally created defects to serve as a controlled environment for evaluating various monitoring techniques. Among these, a unique three-dimensional (3D) Electrical Resistivity Tomography (ERT) setup was implemented. The ERT survey design, combined with full 3D calculation of the geometric factor and inversion constraine
Microbial contamination in coastal environments and groundwater is explored within this thesis, focusing onfecal contamination from anthropogenic sources and microbial community dynamics. The spread andpersistence of microbial contaminants in complex aquatic environments with multiple intermittent and pointsources of contamination, was studied in order to lay a groundwork for developing more robus
The paper presents a new global modeling tool, Stratospheric Chemical Transport Model 2. It has been developed for effective three-dimensional multiyear stratospheric chemistry studies, featuring an extensive chemistry scheme, heterogeneous processing on sulfate aerosols, and some polar stratospheric cloud processes. The transport algorithm maintains sub-grid-scale distributions and connects verti
Hazardous situations involving radioactive, chemical, and other dangerous materials pose significant risks to emergency responders. In such situations, robots can support civil forces in reconnaissance and mitigation. However, this requires the development of robotic systems with novel AI-based assistance functions, operation procedures, and raises new ethical and legal questions. To address these
Background: Ageing-in-place policies have increasingly shifted elder care responsibilities onto family members. Among older cohabiting couples, one’s partner’s illness significantly impacts the other’s daily life and well-being.Aim: To explore the responsibilities and strategies of caregiving partners in older cohabiting couples from the perspectives of cohabiting caregivers.Methods: A qualitative
The climatic conditions at the concrete containment wall surfaces of two nuclear reactor containments were examined and quantified as a basis for predicting the drying process. Two types of nuclear reactor containments were studied, for a BWR reactor and a PWR reactor in Sweden. They both have a thick concrete wall with a steel lining inside, but the BWR containment walls are enclosed in a buildin
Before the minimum tax directive (2003/96/EC) took effect in 2004, Swedish industries had enjoyed untaxed electricity for over a decade. While the introduction of the tax increased costs for many companies, energy intensive industries were eligible for exemption if they entered an agreement on energy efficiency. Sweden quickly implemented the directive and simultaneously launched the Programme for
This paper presents a QVCO and divider for a 28 GHz SiGe PLL. It was designed in a SiGe process with fT= 200 GHz. The PLL is intended to be used for beam steering in an 81-86 GHz E-band transmitter. Phase control is implemented by programmable current injection into the loop filter. The simulations in Spectre use a layout extracted view with parasitics for the QVCO and the frequency divider and an
