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Heat integrated stripper for amine-based CO<sub>2</sub> capture:Pilot and simulation study with AMP/Pz solvent
No full textThe effective management of CO2 emissions is crucial for industrial decarbonisation and environmental sustainability. Chemical absorption remains a key technology for CO2 capture, but improving its efficiency is essential to reduce energy consumption and operational costs. This study explores the application of a Heat Integrated Stripper (HIS) as an advanced pollution control method, enhancing the sustainability of amine-based CO2 capture using an AMP/Pz (30/10 %) solvent. Pilot-scale tests, conducted at a power plant with a flue gas flow rate of 200 m3/h, demonstrated a 6 % reduction in reboiler heat duty (to 3.26 MJ/kgCO2) and a 24 % decrease in cross-flow heat exchanger load, leading to lower cooling water demand and improved resource efficiency. Simulations indicate further potential for energy savings and emissions reduction through enhanced thermal integration. The lower top temperature in the stripper mitigates amine carryover and corrosion risks, improving long-term system reliability and reducing environmental impact. HIS presents a scalable strategy for industrial CO2 capture, supporting the implementation of cleaner production practices and climate change mitigation efforts. The findings provide critical data for scaling up HIS technology in real industrial environments, offering a pathway to enhance resource optimization, sustainability, and the economic viability of CCS processes across multiple sectors.</p
<i>Vying for Victory: The 1923 General Election in the Irish Free State</i>, ed. Elaine Callinan, Mel Farrell and Thomas Tormey
No full textFour years ago, Micheál Martin, the leader of Fianna Fáil, described his appointment as Taoiseach, in coalition with Fine Gael, as ‘the end of Civil War politics’. Between 1922 and 1923, the predecessors of Fianna Fáil and Fine Gael fought a bitter civil war in Ireland over the question of the Anglo-Irish Treaty (which seemed to compromise Irish republican ideals). As Martin’s comment suggests, the conflict casts a long shadow over Irish political culture. Yet it is striking that, just three months after the cessation of hostilities, a (largely) peaceful general election could take place
Heat integrated stripper for amine-based CO<sub>2</sub> capture:Pilot and simulation study with AMP/Pz solvent
No full textThe effective management of CO2 emissions is crucial for industrial decarbonisation and environmental sustainability. Chemical absorption remains a key technology for CO2 capture, but improving its efficiency is essential to reduce energy consumption and operational costs. This study explores the application of a Heat Integrated Stripper (HIS) as an advanced pollution control method, enhancing the sustainability of amine-based CO2 capture using an AMP/Pz (30/10 %) solvent. Pilot-scale tests, conducted at a power plant with a flue gas flow rate of 200 m3/h, demonstrated a 6 % reduction in reboiler heat duty (to 3.26 MJ/kgCO2) and a 24 % decrease in cross-flow heat exchanger load, leading to lower cooling water demand and improved resource efficiency. Simulations indicate further potential for energy savings and emissions reduction through enhanced thermal integration. The lower top temperature in the stripper mitigates amine carryover and corrosion risks, improving long-term system reliability and reducing environmental impact. HIS presents a scalable strategy for industrial CO2 capture, supporting the implementation of cleaner production practices and climate change mitigation efforts. The findings provide critical data for scaling up HIS technology in real industrial environments, offering a pathway to enhance resource optimization, sustainability, and the economic viability of CCS processes across multiple sectors.</p
<i>Vying for Victory: The 1923 General Election in the Irish Free State</i>, ed. Elaine Callinan, Mel Farrell and Thomas Tormey
No full textFour years ago, Micheál Martin, the leader of Fianna Fáil, described his appointment as Taoiseach, in coalition with Fine Gael, as ‘the end of Civil War politics’. Between 1922 and 1923, the predecessors of Fianna Fáil and Fine Gael fought a bitter civil war in Ireland over the question of the Anglo-Irish Treaty (which seemed to compromise Irish republican ideals). As Martin’s comment suggests, the conflict casts a long shadow over Irish political culture. Yet it is striking that, just three months after the cessation of hostilities, a (largely) peaceful general election could take place
Whiteness, Feminism and the Absurd in Contemporary British and US Poetry
No full textJenna Clake’s study characterises and defines a new aesthetic of Absurdism in twenty-first century British and United States poetry, one which specifically focuses on Whiteness and feminism. This book presents a survey of current Absurdist poetry that focuses on Whiteness and gender, identifying key characteristics, and the social and political contexts that have led to the prominence of this aesthetic in British and US poetry, in turn demonstrating how feminine and feminist perspectives help to comprehend the aesthetic. The study highlights significant poets who are exploring Whiteness through the Absurd in their writing, and literary works, before moving on to discuss key poets: Jennifer L. Knox, Caroline Bird and Emily Berry. The book will be of considerable interest to a range of students of English Literatures (British and United States) – as well as those more concerned with Absurdism, the Surreal, Whiteness Studies, and larger matters of the relationship between poetry and popular culture
Whiteness, Feminism and the Absurd in Contemporary British and US Poetry
No full textJenna Clake’s study characterises and defines a new aesthetic of Absurdism in twenty-first century British and United States poetry, one which specifically focuses on Whiteness and feminism. This book presents a survey of current Absurdist poetry that focuses on Whiteness and gender, identifying key characteristics, and the social and political contexts that have led to the prominence of this aesthetic in British and US poetry, in turn demonstrating how feminine and feminist perspectives help to comprehend the aesthetic. The study highlights significant poets who are exploring Whiteness through the Absurd in their writing, and literary works, before moving on to discuss key poets: Jennifer L. Knox, Caroline Bird and Emily Berry. The book will be of considerable interest to a range of students of English Literatures (British and United States) – as well as those more concerned with Absurdism, the Surreal, Whiteness Studies, and larger matters of the relationship between poetry and popular culture
Geochemical transformations induced by CO2 injection in Lithuanian saline aquifers:implications for carbon sequestration
No full textCarbon capture and storage (CCS) in subsurface reservoirs is a promising solution for mitigating carbon dioxide (CO2) emissions. This study investigates the geochemical changes induced by CO2 injection in Lithuanian saline aquifers through an experimental approach. Core flooding experiments were conducted on four outcrop sandstone core samples, involving cyclic brine and CO2 injections to assess alterations in reservoir properties. One sample (BU1) was exposed to CO2 for two days, whereas the remaining three samples (BL1, BS1, and BP1) underwent immediate CO2 injection following brine injection. The findings showed that CO2 injection reduces permeability, likely due to salt precipitation, as evidenced by scanning electron microscopy (SEM) imaging or due to possible mineral dissolution and precipitation. The sample BU1 showed the maximum decrease in permeability (23%) after being exposed to CO2 for two days. The present work highlights the importance of understanding the geochemical interactions required for long-term stability and storage capability of CO2 in a reservoir. Additionally, the study bridges a critical gap by presenting empirical data on Lithuanian saline aquifers, where such studies are sparse, and provides insights for future investigations on actual reservoir samples
Shear capacity prediction and reliability analysis of corroded reinforced concrete beams using deep generative modeling and ensemble learning
No full textThis study develops a machine learning framework to predict the shear capacity of corroded reinforced concrete (CRC) beams, enhancing structural reliability assessments. A Variational Autoencoder (VAE) generated a synthetic dataset of 10,000 samples, addressing the challenges of limited and varied experimental data on corrosion. Comparative analyses showed the VAE outperformed Generative Adversarial Networks (GANs) based on entropy, Kullback–Leibler divergence, and Fréchet Inception Distance (FID), indicating higher data quality and realism. Five machine learning models – Extreme Gradient Boosting (XGBoost), Gradient Boosting Machine (GBM), Categorical Boosting (CatBoost), Adaptive Boosting (AdaBoost), and a back-propagation neural network (BPNN) – were trained using this data. XGBoost demonstrated superior accuracy, achieving an R2 of 0.96 on synthetic data and 0.85 on real data. Shapley Additive Explanations (SHAP) identified critical factors such as concrete strength and stirrup corrosion, impacting shear capacity. A reliability-based approach calibrated a global resistance factor of 1.10, ensuring CRC beams designed with the XGBoost model meet a reliability index of 3.8. This approach significantly advances predictive capabilities and reliability assessments for aging infrastructure management.</p
The Emperor’s Newest Clothes? Simulated Learning and its Benefits and Challenges for Practitioner Pedagogy in Higher Education (HE).
No full textThe global pandemic has heightened interest in technology enabled learning (TEL) and it is interesting to consider this form of pedagogy in view of this new lens. TEL can be defined as applying technology to learning and teaching. This think piece reflects on the findings of research into simulated learning in HE by applying the work of Goffman in considering the benefits and challenges for practitioners and students in respect of pedagogy. The new way of learning which became evident during the pandemic with the application of extensive TEL is considered with simulated learning in HE. Goffman’s work is helpful as he draws attention to the analogy of the theatrical stage with its regions beyond the formal play. In exploring this area with simulated learning, we argue that simulated learning is like any form of pedagogy as it is characterised by benefits and challenges for practitioners and students. Prior to the pandemic, TEL was at times wrongly considered as a form of learning which is new or newest and characterised by best practice. We argue, however, that simulated learning in pedagogy is like any form of pedagogy in being characterised by strengths and weaknesses
On evolution of non-binding commitments:Comment on “LLMs and generative agent-based models for complex systems research” by Y. Lu et al.
No full textLarge Language Models (LLMs) possess capabilities that extend beyond language understanding and generation to model complex interactions based on straightforward prompts [1], [2]. This transformative potential has elicited interest across multiple disciplines as researchers investigate how LLMs can illuminate existing scientific challenges and open new paradigms for understanding complex systems [3], [4], [5]. In this context, Lu et al. provides a timely and comprehensive review, surveying recent advancements in the application of LLMs to complex systems [6]. Their work summarises the roles of LLMs in predicting social behaviour, enhancing cooperation in game theory, and simulating disease dynamics and the challenges in integrating LLMs into complex systems due to prompt sensitivity, hallucinations, or model characteristics