Article
Engineering, Multidisciplinary
Mohammad Taghi Ahmadi, Banafsheh Alizadeh Arashloo, Truong Khang Nguyen
Summary: Carbon-based materials like graphene and its derivatives play important roles in nano-technological applications, with Memristor receiving attention as a nonvolatile memory solution. This study explores a Memristor model based on graphene oxide, demonstrating the formation of conductive paths by increasing voltage and achieving resistance switching.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Mingxi Zhou, Ralf Bachmayer, Brad DeYoung
Summary: The calving, drifting, and melting of icebergs have impacts on local ecosystems, ocean circulation, and global sea levels. Models have been developed to predict climate change and protect offshore operations.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Obstetrics & Gynecology
S. Leitao, E. Manning, R. A. Greene, P. Corcoran
Summary: The study reveals that hemorrhage and hypertension are the main causes of maternal morbidity in Ireland, with low case fatality rates. Effective management of these conditions is observed, but prevention efforts need to be emphasized.
BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY
(2022)
Article
Engineering, Civil
Ian D. Turnbull, Tony King, Freeman Ralph
Summary: This study developed an iceberg drift model for offshore oil and gas operations and tested it using various sources of ocean current data. The simulations based on estimated current drift and buoy measurements showed smaller errors compared to simulations using a three-dimensional (3D) ocean model.
INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Alex Huth, Alistair Adcroft, Olga Sergienko, Nuzhat Khan
Summary: The research shows that the breakup of giant iceberg A68a may have been triggered by ocean-current shear, a new breakup mechanism. Current climate models do not adequately represent giant icebergs, and the introduction of new methods will help improve the accuracy of global climate simulations.
Article
Environmental Sciences
Dag Ottesen, Julian A. Dowdeswell
Summary: This study identified a series of asymmetrical to circular pits on the upper slope, believed to be formed by iceberg keels grounding on the seabed during low tides. The pits are considered as evidence of iceberg drift in the local marine area, as well as the evolution process of the Norwegian shelf after the Last Glacial Maximum.
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2022)
Article
Multidisciplinary Sciences
Alan Condron, Jenna C. Hill
Summary: High-resolution seafloor mapping reveals evidence of massive icebergs drifting south along the eastern United States, with sediment core analysis and numerical modeling providing insights into iceberg transport mechanisms and past climate changes.
NATURE COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Aidan Keane
Summary: The recently proposed analytical wake model for a horizontal axis utility scale wind turbine is revisited, revised and improved based on conservation of momentum and the assumption of a double-Gaussian distribution for the velocity deficit in the wake. The model fitting using lidar wake measurement data reveals characteristics of the wind turbine wake, potentially facilitating analytic calculations and improving understanding of wind turbine aerodynamics.
Article
Meteorology & Atmospheric Sciences
A. Huth, A. Adcroft, O. Sergienko
Summary: This study develops a physically based parameterization method for iceberg breakup and verifies it using simulation models. The results show that iceberg breakup plays a significant role in the distribution of iceberg meltwater, which was previously not taken into account.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Engineering, Manufacturing
Adrien Mouchard, Michael Pomeroy, Jeremy Robinson, Bryan McAuliffe, Simon Donovan, David Tanner
Summary: This study proposes a novel analytical method based on a straightforward measurement technique to reverse engineer the powder flow distribution, with good predictability demonstrated on different working distances and surfaces.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Civil
Konstantin A. Kornishin, Yaroslav O. Efimov, Dmitriy Nikushchenko, Dmitriy S. Khmara, Nikita Tryaskin, Andrey G. Andreev, Andrey A. Skutin, Konstantin G. Smirnov
Summary: This article examines the movement of icebergs under the influence of wind-force, analyzing the impact of iceberg shape on movement parameters, and proposing formulas for calculating wind load and drift speed. The results can be used for modeling iceberg drift and assessing the impact of wind during iceberg towing.
INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING
(2022)
Article
Thermodynamics
Joy Marie Mora, Mrittunjoy Sarker, Zabihollah Najafianashrafi, Md. Azimur Rahman, Ami C. Yang-Neyerlin, Bryan Pivovar, Po-Ya Abel Chuang
Summary: An analytical and empirical-based 1-D, non-isothermal, steady-state model for anion exchange membrane fuel cell capable of capturing two-phase phenomena is proposed in this study. The model successfully predicts the cell performance and provides valuable insights for water management and optimal component design.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Chemistry, Analytical
Pawel Mateusz Nowak, Renata Wietecha-Posluszny, Janusz Pawliszyn
Summary: The concept of White Analytical Chemistry (WAC) extends from Green Analytical Chemistry (GAC) with 12 WAC principles proposed as an alternative to the known 12 GAC principles. WAC considers key criteria affecting the quality of the method, including analytical and practical aspects, aiming for coherence and synergy of analytical, ecological, and practical attributes.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Computer Science, Artificial Intelligence
Firas Bayram, Bestoun S. Ahmed, Andreas Kassler
Summary: The dynamicity of real-world systems presents a challenge for deployed machine learning models. This paper addresses the issue of concept drift and the confusion caused by various terms used in the literature. It provides a consolidated taxonomy of concept drift types and reviews performance-based detection methods. The paper also analyzes the attributes and strategies for tracking and evaluating model performance, and discusses future research directions and challenges.
KNOWLEDGE-BASED SYSTEMS
(2022)
Article
Engineering, Marine
Dong Ho Yoon, Seong-Yeob Jeong, Joonmo Choung
Summary: This paper investigates the motion and structural damage of an icebreaker caused by a collision with an iceberg using the coupling of potential flow theory and finite element analysis. The newly developed hydrodynamic subroutine HydroQus was employed for the collision simulations. The effects of hydro-forces were analyzed through parametric simulations, showing that wave loads significantly contribute to the collision-induced impact force and structural damage.
Article
Geosciences, Multidisciplinary
Till J. W. Wagner, Ian Eisenman
GEOPHYSICAL RESEARCH LETTERS
(2017)
Article
Meteorology & Atmospheric Sciences
Till J. W. Wagner, Alon A. Stern, Rebecca W. Dell, Ian Eisenman
Article
Geochemistry & Geophysics
Till J. W. Wagner, Rebecca W. Dell, Ian Eisenman, Ralph F. Keeling, Laurie Padman, Jeffrey P. Severinghaus
EARTH AND PLANETARY SCIENCE LETTERS
(2018)
Article
Geosciences, Multidisciplinary
D. A. Slater, F. Straneo, S. B. Das, C. G. Richards, T. J. W. Wagner, P. W. Nienow
GEOPHYSICAL RESEARCH LETTERS
(2018)
Review
Geochemistry & Geophysics
Clare Eayrs, David Holland, Diana Francis, Till Wagner, Rajesh Kumar, Xichen Li
REVIEWS OF GEOPHYSICS
(2019)
Article
Geosciences, Multidisciplinary
E. Beer, I Eisenman, T. J. W. Wagner
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Geosciences, Multidisciplinary
C. W. Lester, T. J. W. Wagner, Dylan E. McNamara, M. R. Cape
Summary: The study suggests that the spring blooms of phytoplankton in the Arctic Ocean are highly dependent on sea-ice meltwater for horizontal mixing and maintaining the stratified upper ocean. When meltwater concentration is sufficient, it allows phytoplankton to be confined near the surface, exposed to enough sunlight for optimal growth. The findings support the central role of sea-ice meltwater in shaping the spatial patterns of Arctic phytoplankton blooms.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Mark R. England, Till J. W. Wagner, Ian Eisenman
Article
Geosciences, Multidisciplinary
Mark R. England, Ian Eisenman, Nicholas J. Lutsko, Till J. W. Wagner
Summary: Arctic Amplification, the phenomenon where the Arctic warms faster than the global average, has been confirmed through climate model simulations and paleo proxy reconstructions. Research shows that Arctic Amplification is only recent, with the Arctic cooling while the global-mean temperature rose for much of the 20th century. This was due to a combination of regional cooling from aerosols offsetting greenhouse gas warming, and internal climate variability contributing to different trends in the Arctic and globally.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
T. J. W. Wagner, I. Eisenman, H. C. Mason
Summary: The study found that equatorward sea ice drift consistently leads to loss of ice volume, and the impact on ice area depends on seasonal factors and background climate. When there is enough ice, drift may slightly expand ice area, but for thinner ice, drift during the melt season can cause cracks and substantial ice loss that persists throughout the year.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
L. A. Roach, I Eisenman, T. J. W. Wagner, E. Blanchard-Wrigglesworth, C. M. Bitz
Summary: This article suggests that solar radiation is the driving force behind the asymmetry in the seasonal cycle of Antarctic sea ice. The ice retreat period is approximately two months shorter than the ice advance period, and this asymmetry is consistent in observations and satellite products. Using idealized climate models, the study shows that the seasonal cycle of incident solar radiation at the top of the atmosphere is responsible for this asymmetry, as the high latitudes in the Southern Hemisphere experience a narrow peak of intense brightness in summer and a long period of low light in winter.
Article
Geosciences, Multidisciplinary
Lettie A. Roach, Ian Eisenman, Till J. W. Wagner, Aaron Donohoe
Summary: The seasonal cycle of zonal-mean surface air temperature is asymmetric, with the lengths of the warming and cooling seasons being unequal. This asymmetry varies spatially and between the Northern and Southern Hemispheres. A simple model suggests that Earth's orbital eccentricity and obliquity play important roles in determining the asymmetry. Factors such as clouds, atmospheric heat flux convergence, and effective surface heat capacity have minimal impacts on the seasonal asymmetry, challenging previous discussions.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Biodiversity Conservation
Andrew P. Castagno, Till J. W. Wagner, Mattias R. Cape, Conner W. Lester, Elizabeth Bailey, Catharina Alves-de-Souza, Robert A. York, Alyson H. Fleming
Summary: Primary production of phytoplankton in the Arctic Ocean has been increasing over the past 20 years. In 2019, a record-breaking spring bloom occurred in Fram Strait, with higher chlorophyll concentrations and an earlier peak compared to previous years. Our study finds a direct relationship between sea ice meltwater and chlorophyll a concentrations during the May bloom in 2019. Over the past two decades, increased advection of sea ice and warmer surface temperatures have led to increased meltwater input and stronger near-surface stratification, contributing to the observed changes in phytoplankton blooms.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Geography, Physical
Till J. W. Wagner, Fiamma Straneo, Clark G. Richards, Donald A. Slater, Laura A. Stevens, Sarah B. Das, Hanumant Singh