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Articles 26161 - 26190 of 830593
Full-Text Articles in Entire DC Network
Assessment Of External Root Resorption During The First Stage Of The Orthodontic Treatment: A Prospective Cone-Beam Tomography Study, Eliana Pineda Vélez
Assessment Of External Root Resorption During The First Stage Of The Orthodontic Treatment: A Prospective Cone-Beam Tomography Study, Eliana Pineda Vélez
International Arab Journal of Dentistry
Introduction: predisposition to root resorption as a result of a dental movement may be a consequence of clinical, biological, and biomechanical factors that should lead the clinician to objectively assess each patient to reduce associated risk factors.
Objectives: to establish an association between clinical and tomographic findings related to external root resorption (ERR) using cone beam tomography (CBCT) on maxillary incisors during the first stage of the orthodontic treatment. Methods: an observational, follow-up, cohort study that analyzed the association between clinical and radiographic variables on maxillary incisors using CBCT before placing fixed orthodontic appliances and finishing the first …
Full-Arch Rehabilitation Of Post-Mucormycosis Edentulous Maxilla Using Quad Zygomatic Implants: A Clinical Case Report, Akansha Bansod, Sweta Kale Pisulkar, Arushi Beri, Mony Behera, Pragya Manushree, Utkarsh Umre, Michael Subal Pramanik
Full-Arch Rehabilitation Of Post-Mucormycosis Edentulous Maxilla Using Quad Zygomatic Implants: A Clinical Case Report, Akansha Bansod, Sweta Kale Pisulkar, Arushi Beri, Mony Behera, Pragya Manushree, Utkarsh Umre, Michael Subal Pramanik
International Arab Journal of Dentistry
Rehabilitating the maxilla in the patient who has had surgical resection for mucormycosis poses a distinctive set of anatomical, surgical, and prosthetic challenges. The extensive maxillary bone loss after aggressive debridement often makes traditional implant-supported prosthetic options impossible. In these circumstances, zygomatic implants have proven to be a predictable, graftless solution, especially in patients with extremely atrophic maxillae. Where the bone loss is severe, the quad zygoma procedure—two implants for each zygomatic arch—is possible to support full arch rehabilitation with a fixed prosthesis. This report presents the successful rehabilitation of oral function and appearance in a patient with post-mucormycosis edentulous …
Impact On Oral Health Of The Post-Covid-19 Infections: A Systematic Review, Aouatif Aouidate, Hanane Ouddoud, Loubna Bahije
Impact On Oral Health Of The Post-Covid-19 Infections: A Systematic Review, Aouatif Aouidate, Hanane Ouddoud, Loubna Bahije
International Arab Journal of Dentistry
Introduction: The COVID-19 pandemic has been associated with a diverse range of oral health implications, including mucosal lesions, periodontitis, and disruptions of the oral microbiota. Since airborne particles primarily transmit COVID-19, understanding its potential impact on oral health is crucial for dental care and infection control.
Objectives: This systematic review aimed to evaluate the effects of post-COVID-19 infections on oral health, highlighting clinical manifestations, periodontal disease associations, and microbiota disturbances.
Methods: Electronic literature searches were conducted between January 2020 and July 2024 by one author across several databases, including PubMed/MEDLINE, Scopus, Cochrane Library, EMBASE, ScienceDirect, Google Scholar, …
Molecular Determinants Of Neoadjuvant Chemotherapy Resistance In Breast Cancer: An Analysis Of Gene Expression And Tumor Microenvironment, Hedda Michelle Guevara-Nieto, Carlos A. Orozco-Castaño, Rafael Parra-Medina, Jenny Nathaly Poveda-Garavito, Jone Garai, Jovanny Zabaleta, Liliana López-Kleine, Alba Lucia Combita
Molecular Determinants Of Neoadjuvant Chemotherapy Resistance In Breast Cancer: An Analysis Of Gene Expression And Tumor Microenvironment, Hedda Michelle Guevara-Nieto, Carlos A. Orozco-Castaño, Rafael Parra-Medina, Jenny Nathaly Poveda-Garavito, Jone Garai, Jovanny Zabaleta, Liliana López-Kleine, Alba Lucia Combita
School of Graduate Studies Faculty Publications
Neoadjuvant chemotherapy (NAC) is a critical component of breast cancer treatment, but the molecular mechanisms underlying resistance remain poorly understood. This study aimed to identify transcriptomic changes associated with NAC resistance across four breast cancer subtypes: Luminal A, Luminal B/HER2-positive, Luminal B/HER2-negative, and Triple-Negative Breast Cancer (TNBC). RNA-seq analysis was performed on paired pre- and post-NAC breast cancer samples from 32 nonresponders. Differentially expressed genes (DEGs) were identified, and functional enrichment analyses were conducted. Protein-protein interaction (PPI) networks were constructed to identify hub genes. Tumor microenvironment (TME) infiltration was estimated using deconvolution algorithms. The results revealed distinct gene expression profiles …
Re: Butte Priority Soil Operable Unit (Bpsou) Final Insufficiently Reclaimed Sites Field Sampling Plan (Fsp): Bres No. 91 – Robert Emmett Dump, Mike Mcanulty
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Evaluation Of The Remineralizing Agents After Orthodontic Bracket Debonding: A Sem-Edx Investigation, Bassant Ashraf Badr, Medhat Elzainy, Noha Ibrahim, Hend El Messiry
Evaluation Of The Remineralizing Agents After Orthodontic Bracket Debonding: A Sem-Edx Investigation, Bassant Ashraf Badr, Medhat Elzainy, Noha Ibrahim, Hend El Messiry
International Arab Journal of Dentistry
Objectives: To compare the remineralizing efficacy of (Fluoride (Fl) Varnish, Nanohydroxyapatite (n-HAp) serum and NovaMin-containing toothpaste) on premolars subjected to orthodontic debonding and a pH-cycling model.
Methods: 60 human premolars were divided into six groups (n=10). Group IA, sound enamel, IB, orthodontically treated premolars, IC, orthodontically treated premolars subjected to demineralization cycles. Three experimental groups included orthodontically treated premolars subjected to demineralization cycles and treated with Fl varnish (IIA), n-HAp serum (IIB), and NovaMin toothpaste (IIC). Surface topography and mineral content were evaluated using SEM-EDX analysis, and data were statistically analyzed using ANOVA test and Tukey’s post-hoc test. …
Corrected Amicus Brief Filed By Amici Curiae Law Professors In 25-11612 & 25-11821, William Snape, Delicianna Winders, Patrick Parenteau, Christopher Courchesne, Hope Babcock, Holly Doremus, Paul Boudreaux, Oliver A. Houck, Zygmunt J.B. Plater, Michelle Benedict Nowlin, Daniel Rohlf
Corrected Amicus Brief Filed By Amici Curiae Law Professors In 25-11612 & 25-11821, William Snape, Delicianna Winders, Patrick Parenteau, Christopher Courchesne, Hope Babcock, Holly Doremus, Paul Boudreaux, Oliver A. Houck, Zygmunt J.B. Plater, Michelle Benedict Nowlin, Daniel Rohlf
Amicus Briefs & Court Filings
STATEMENT OF THE ISSUES: Whether the district court's injunction requiring FDEP to cease Endangered Species Act-violating conduct, obtain an incidental take permit before it continues with the conduct, and implement reasonable protective measures violates principles of cooperative federalism, the Tenth Amendment, or the anti-commandeering doctrine.
Candida Auris Screening, Positivity Trends, And Patient Characteristics At The University Of Kentucky Between 2021 And 2024, Faith Fursman, Natalie Fitzsimmons, Da Nelle Overton, Court Desmond, Kimberly Blanton, Kevin W. Hatton, Rachel Howard, David Olafsson, Sean Mctigue, Nicholas Van Sickels, Derek Forster, Takaaki Kobayashi
Candida Auris Screening, Positivity Trends, And Patient Characteristics At The University Of Kentucky Between 2021 And 2024, Faith Fursman, Natalie Fitzsimmons, Da Nelle Overton, Court Desmond, Kimberly Blanton, Kevin W. Hatton, Rachel Howard, David Olafsson, Sean Mctigue, Nicholas Van Sickels, Derek Forster, Takaaki Kobayashi
Surgery Faculty Publications
We evaluated a targeted Candida auris screening program, which revealed a 0.96% positivity rate. The proportion of community-onset cases increased from 8% to 54% following implementation. No significant differences in demographic or clinical characteristics were observed between patients with colonization and those with infection.
Eutrophication, Hope Northagen, Sarah Erwin, Ethan Gilliam
Eutrophication, Hope Northagen, Sarah Erwin, Ethan Gilliam
All Current Publications
Eutrophication refers to the ecological state of a water body after excessive nutrient pollution. The external introduction of nutrients (primarily nitrogen and phosphorus) accelerates the growth and reproduction of plants, algae, and microbes. This fact sheet explains where eutrophication comes from, its impacts, how it is treated, and what you can do to help restore and protect our lakes, rivers, and oceans.
Allergy In Dentistry: Mechanisms Of Development And Effective Treatment Methods, Maria Zofia Lisiecka
Allergy In Dentistry: Mechanisms Of Development And Effective Treatment Methods, Maria Zofia Lisiecka
International Arab Journal of Dentistry
Objectives: This study is conducted to analyse the mechanisms of allergic reaction development in dentistry and the effectiveness of their treatment methods.
Methods: During it, a review of current scientific sources on allergology, immunology, dentistry, pharmacology, and materials science is conducted, mechanisms for the development of allergies of various types are established, the effectiveness of treatment methods is evaluated, and clinical recommendations for allergy therapy in dentistry are formed.
Results: The results show that the development of allergic reactions occurs by two mechanisms. Immediate-type immunoglobulin E-mediated (IgE-mediated) responses are triggered by the release of histamine, serotonin, and …
Sickle Cell Anemia And Its Impact On The Oral Cavity: Integrative Review, Fernanda Leal, Maria Inês Guimarães, Ambre Natbeth, Inês Lopes Cardoso
Sickle Cell Anemia And Its Impact On The Oral Cavity: Integrative Review, Fernanda Leal, Maria Inês Guimarães, Ambre Natbeth, Inês Lopes Cardoso
International Arab Journal of Dentistry
Introduction: Sickle cell anemia, a hereditary disease, results from a mutation in the β-globin coding gene that makes up hemoglobin, leading to the deformation of erythrocytes. Numerous oral manifestations result from this disease; however, some may not be specific.
Objectives: This study’s objective is to recognize these clinical manifestations of the disease to be able to manage oral health in sickle cell anemia patients.
Methods: this integrative review analyzes scientific literature on the impact of sickle cell anemia on oral cavity. A bibliographic search was performed in PubMed, ScienceDirect, CINAHL Plus (via EBSCO host), Web of Science …
Drug-Eluting Resorbable Scaffold Versus Balloon Angioplasty For Below-The-Knee Peripheral Artery Disease: 2-Year Results From The Life-Btk Trial., Brian G Derubertis, Ramon L Varcoe, Prakash Krishnan, Marc P Bonaca, David J O'Connor, Richard Pin, David C Metzger, Andrew Holden, Jen-Kuang Lee, Osamu Iida, Ehrin J Armstrong, Steven W C Kum, Raghu Kolluri, Danielle R Bajakian, Lawrence A Garcia, Mehdi H Shishehbor, Shawn Yu, Karine Ruster, Brad J Martinsen, Zsuzsanna Igyarto, Sahil A Parikh
Drug-Eluting Resorbable Scaffold Versus Balloon Angioplasty For Below-The-Knee Peripheral Artery Disease: 2-Year Results From The Life-Btk Trial., Brian G Derubertis, Ramon L Varcoe, Prakash Krishnan, Marc P Bonaca, David J O'Connor, Richard Pin, David C Metzger, Andrew Holden, Jen-Kuang Lee, Osamu Iida, Ehrin J Armstrong, Steven W C Kum, Raghu Kolluri, Danielle R Bajakian, Lawrence A Garcia, Mehdi H Shishehbor, Shawn Yu, Karine Ruster, Brad J Martinsen, Zsuzsanna Igyarto, Sahil A Parikh
Heart and Vascular Articles
BACKGROUND: Limited treatment options exist for infrapopliteal disease in patients with chronic limb-threatening ischemia (CLTI), a condition associated with a high risk of limb loss. Interventional management of diseased infrapopliteal vessels with percutaneous transluminal angioplasty (PTA) is associated with high rates of restenosis and reintervention. In the LIFE-BTK randomized controlled trial (Pivotal Investigation of Safety and Efficacy of BRS Treatment-Below the Knee), the drug-eluting resorbable scaffold (DRS) demonstrated superior 12-month efficacy compared with PTA in a selected CLTI population with predominantly noncomplex, mildly to moderately calcified lesions. This report presents the 2-year safety and efficacy outcomes of the Esprit BTK …
Training The Brain: A Machine Learning Approach To Predicting Wellbeing Through Intentional Thought Pattern Modification, Sellappan Palaniappan, Rajasvaran Logeswaran, Kasthuri Subaramaniam, Oras Baker, Bui Ngoc Dung
Training The Brain: A Machine Learning Approach To Predicting Wellbeing Through Intentional Thought Pattern Modification, Sellappan Palaniappan, Rajasvaran Logeswaran, Kasthuri Subaramaniam, Oras Baker, Bui Ngoc Dung
Journal of Informatics and Web Engineering
This study provides a quantitative framework for wellbeing outcome prediction through intentional cognitive pattern alteration. We demonstrated 81.67% accurate prediction of wellbeing states, in a three-level classification (Low, Medium, High), using a Random Forest classifier with 16 features from psychological, physiological, and behavioural metrics. Our model singles out the gratitude cultivation (21.3%) and peace duration (23.7%) as the strongest predictors of positive well-being outcomes, which provides empirical support to traditional approaches of cognitive training with empirical evidence. Analysis of 1,000 synthetic cases shows that consistent practice of positive thought patterns over 3-6 months can strongly shift wellbeing states, with key …
Deep Learning Approaches To Autocorrelation Function And Signal-To-Noise Ratio Estimation In Noisy Images, Kai Liang Lew, Kok Swee Sim, Shing Chiang Tan
Deep Learning Approaches To Autocorrelation Function And Signal-To-Noise Ratio Estimation In Noisy Images, Kai Liang Lew, Kok Swee Sim, Shing Chiang Tan
Journal of Informatics and Web Engineering
Accurate estimation of signal-to-noise ratio (SNR) in Scanning Electron Microscopy (SEM) is crucial because it evaluates the image quality. SEM images faced a challenge whereby Gaussian noise commonly appears in the images. Thus, researchers have developed several methods to estimate the SNR value. With the introduction of deep learning, most of the limitations in the classical methods can be addressed. This paper proposes a novel deep learning, CNN-based Calibration Map Network (CalibNet) to estimate the SNR value from SEM images using a calibration map between classical SNR and autocorrelation function SNR. The architecture consists of convolutional layers, rectified linear unit …
Optimizing Genetic Ancestry Adjustment In Dna Methylation Studies: A Comparative Analysis Of Approaches, Kira D Höffler, Seyma Katrinli, Matthew W Halvorsen, Anne-Kristin Stavrum, Kevin S O'Connell, Srdjan Djurovic, James J Crowley, Jan Haavik, Kristen Hagen, Gerd Kvale, Kerry Ressler, Bjarne Hansen, Jair C Soares, Gabriel R Fries, Alicia K Smith, Stéphanie Le Hellard
Optimizing Genetic Ancestry Adjustment In Dna Methylation Studies: A Comparative Analysis Of Approaches, Kira D Höffler, Seyma Katrinli, Matthew W Halvorsen, Anne-Kristin Stavrum, Kevin S O'Connell, Srdjan Djurovic, James J Crowley, Jan Haavik, Kristen Hagen, Gerd Kvale, Kerry Ressler, Bjarne Hansen, Jair C Soares, Gabriel R Fries, Alicia K Smith, Stéphanie Le Hellard
Faculty, Staff and Student Publications
Background: Genetic ancestry is an important factor to account for in DNA methylation studies because genetic variation influences DNA methylation patterns. One approach uses principal components (PCs) calculated from CpG sites that overlap with common SNPs to adjust for ancestry when genotyping data is not available. However, this method does not remove technical and biological variations, such as sex and age, prior to calculating the PCs. The first PC is therefore often associated with factors other than ancestry.
Methods: We developed and adapted the adapted EpiAnceR+ approach, which includes (1) residualizing the CpG data overlapping with common SNPs for control …
Cloud Seeding: Enhancing Winter Snowpack To Bolster Utah's Water Supply, Lily Lambert, Kendall Becker, Binod Pokharel, Scott Hotaling
Cloud Seeding: Enhancing Winter Snowpack To Bolster Utah's Water Supply, Lily Lambert, Kendall Becker, Binod Pokharel, Scott Hotaling
All Current Publications
As Utah’s climate warms, the state is working to combat the decline in winter snowpack caused by rising temperatures. Cloud seeding is a safe technology that, under the right conditions, can boost snowfall. In this fact sheet, we describe what cloud seeding is, where it is currently used in Utah, and the safety measures and management practices that ensure its responsible use.
Differential Patterns Of Gut And Oral Microbiomes In Hispanic Individuals With Cognitive Impairment, Yannick N. Wadop, Erin L. Vasquez, Julia J. Mathews, Jazmyn A. S. Muhammad, Rosa P. Mavarez, Claudia Satizabal, Mitzi M. Gonzales, Jeremy A. Tanner, Gladys E. Maestre, Bernard Fongang
Differential Patterns Of Gut And Oral Microbiomes In Hispanic Individuals With Cognitive Impairment, Yannick N. Wadop, Erin L. Vasquez, Julia J. Mathews, Jazmyn A. S. Muhammad, Rosa P. Mavarez, Claudia Satizabal, Mitzi M. Gonzales, Jeremy A. Tanner, Gladys E. Maestre, Bernard Fongang
School of Medicine Publications
Alterations in both oral and gut microbiomes have been associated with Alzheimer's disease and related dementia (ADRD). While extensive research has focused on the role of gut dysbiosis in ADRD, the contribution of the oral microbiome remains relatively understudied. This study aims to evaluate distinct patterns and potential synergistic effects of oral and gut microbiomes in a cohort of predominantly Hispanic individuals with cognitive impairment (CI) and without cognitive impairment (NC). We conducted 16S rRNA gene sequencing on stool and saliva samples from 32 participants (17 CI, 15 NC; 62.5% female, mean age = 70.4 ± 6.2 years) recruited in …
Generative Modeling For Interpretable Anomaly Detection In Medical Imaging: Applications In Failure Detection And Data Curation, Austin H Castelo, Olubunmi C Lebimoyo, Aashish C Gupta, Joshua P Yung, Paul E Kinahan, Clifton D Fuller, Eugene J Koay, Bruno C Odisio, Ankit B Patel, Kristy K Brock
Generative Modeling For Interpretable Anomaly Detection In Medical Imaging: Applications In Failure Detection And Data Curation, Austin H Castelo, Olubunmi C Lebimoyo, Aashish C Gupta, Joshua P Yung, Paul E Kinahan, Clifton D Fuller, Eugene J Koay, Bruno C Odisio, Ankit B Patel, Kristy K Brock
Faculty, Staff and Students Publications
This work aims to leverage generative modeling-based anomaly detection to enhance interpretability in AI failure detection systems and to aid data curation for large repositories. For failure detection interpretability, this retrospective study utilized 3339 CT scans (525 patients), divided patient-wise into training, baseline test, and anomaly (having failure-causing attributes—e.g., needles, ascites) test datasets. For data curation, 112,120 ChestX-ray14 radiographs were used for training and 2036 radiographs from the Medical Imaging and Data Resource Center for testing, categorized as baseline or anomalous based on attribute alignment with ChestX-ray14. StyleGAN2 networks modeled the training distributions. Test images were reconstructed with backpropagation and …
Needs Analysis Of Interactive Learning Media For Teachingheat Transfer In Physics: Students’ And Teachers’Perspectives, Rizki Eka Shintya, Ika Mustika Sari, Ida Kaniawati
Needs Analysis Of Interactive Learning Media For Teachingheat Transfer In Physics: Students’ And Teachers’Perspectives, Rizki Eka Shintya, Ika Mustika Sari, Ida Kaniawati
Jurnal Pendidikan Sains
Heat transfer material in physics is known to be abstract. This study specifically analyzes the conceptual difficulties, and visualization needs specific to this material, which is different from the analysis of physics needs in general. This analysis does not only look for the need for traditional media but explicitly looks for the need for interactive media (simulation, animation, virtual laboratory). Therefore, this study aims to identify the need for interactive learning media in physics education, specifically in the teaching of heat transfer, from the perspective of students and teachers in West Java, Indonesia. Using a quantitative descriptive survey, data were …
Efficacy Of Teaching At The Right Level Approach Combined With The Problem-Based Learning Model On Science Learning Outcomes At Middle School, Heri Syahputra Azhar Panjaitan, Ryan Dwi Puspita
Efficacy Of Teaching At The Right Level Approach Combined With The Problem-Based Learning Model On Science Learning Outcomes At Middle School, Heri Syahputra Azhar Panjaitan, Ryan Dwi Puspita
Jurnal Pendidikan Sains
This research seeks to evaluate the efficacy of the Teaching at the Right Level (TaRL) strategy in conjunction with the Problem-Based Learning (PBL) model on the scientific learning outcomes of eighth-grade students at middle school Islam Terpadu Khairul Imam. This research addresses the inadequate scientific problem-solving abilities and science learning outcomes of Indonesian students, necessitating a more interactive and individualized instructional technique. The methodology used is a quasi-experimental design with a nonequivalent control group. The sample included two purposively chosen eighth-grade classes: one experimental class (n=25) underwent the TaRL–PBL intervention, whereas the control class (n=25) simply used the lecture approach. …
Co-Creation Of Sustainable Concrete For Harsh Environments, Seyedalireza Mohammadirad, Jenny Harmon O'Driscoll, Michael O'Shea, Eoghan Clifford, Páraic Ryan
Co-Creation Of Sustainable Concrete For Harsh Environments, Seyedalireza Mohammadirad, Jenny Harmon O'Driscoll, Michael O'Shea, Eoghan Clifford, Páraic Ryan
International Conference on Durability of Concrete Structures
The need to decarbonise construction has intensified interest in low-clinker, high-durability concretes for aggressive environments such as marine and water/wastewater infrastructure. This study presents a co-created research framework combining systematic literature review, stakeholder engagement, and performance-based experimental design to evaluate both conventional and emerging Supplementary cementitious materials (SCMs). SCM selection was guided by oxide composition (CaO/SiO₂, CaO/Al₂O₃), hydration kinetics, durability trends, and industry input. Meta-analyses of acid and sulphate resistance identified key compositional thresholds and performance anomalies, supporting the inclusion of biomass fuel ash (BFA) and limestone calcined clay cement alongside fly ash and GGBS. A standard industry mix (C32/40) …
Use Fibre Optic Sensor Systems For Structural Integrity Monitoring In Ageing Sewer Concrete Structures And Pipelines, Matthas Fabian, Joanna Coote, Richard Harry Scott, Heriberto Bustamante, Tong Sun, Kenneth Thomas Victor Grattan
Use Fibre Optic Sensor Systems For Structural Integrity Monitoring In Ageing Sewer Concrete Structures And Pipelines, Matthas Fabian, Joanna Coote, Richard Harry Scott, Heriberto Bustamante, Tong Sun, Kenneth Thomas Victor Grattan
International Conference on Durability of Concrete Structures
Fibre Bragg Gratings (FBGs) form the basis of a valuable class of sensors that have a number of applications in industry and are formed as a periodic variation in the refractive index of an optical fibre that reflects light at a specific wavelength depending on the strain applied to the fibre – this effect can be related to and then calibrated against the parameter to be measured. A number of different types of sensors have been developed for monitoring sewer structures, detecting strain and potential leaks in sewer pipelines by embedding fibres along the pipeline route and for monitoring the …
Challenges And Opportunities In Concrete Precast Sector And Its Transition To A Net-Zero Future, Sreejith Nanukuttan, Rory Doherty, Daniel Mcpolin, Marios Soutsos, Mark Russell
Challenges And Opportunities In Concrete Precast Sector And Its Transition To A Net-Zero Future, Sreejith Nanukuttan, Rory Doherty, Daniel Mcpolin, Marios Soutsos, Mark Russell
International Conference on Durability of Concrete Structures
This article explores key factors shaping the transition of the precast concrete sector toward net-zero carbon. While not exhaustive, it highlights areas of scientific and technical interest for a specialist audience. The discussion is structured around priority themes: beginning with cement and clinker replacement, followed by production efficiency improvements, rethinking steel usage, carbon sequestration strategies, and, finally, structural optimisation or volume reduction. These areas are often interdependent: for instance, clinker replacement, production efficiency, and structural optimisation are all influenced by the 16 – 18 hour production cycle typical of precast manufacturing. Unlike the readymix sector, precast operates on a fast-paced, …
Decalcification Of Calcium Silicate Hydrate By Sulfate Attack: Material Degradation By Heterogeneous Charges, Muhan Wang, Xiangming Zhou, Chengbo Liu, Pan Wang, Dongshuai Hou
Decalcification Of Calcium Silicate Hydrate By Sulfate Attack: Material Degradation By Heterogeneous Charges, Muhan Wang, Xiangming Zhou, Chengbo Liu, Pan Wang, Dongshuai Hou
International Conference on Durability of Concrete Structures
Sulfate attack is a key factor limiting the durability of concrete in aggressive environments, primarily through the degradation of calcium silicate hydrate (C–S–H), the main binding phase of cement. This study investigates the molecular mechanisms of C–S–H decalcification under sulfate exposure by combining semi-empirical Born–Oppenheimer molecular dynamics (BOMD) with density functional theory (DFT). A C–S–H model with a Ca/Si ratio of 1.5 was simulated in aqueous environments with and without sulfate ions. BOMD trajectories revealed that while C–S–H remained largely stable in pure water, sulfate ions rapidly promoted Ca²⁺ desorption, leading to silicate chain fragmentation and Q²→Q¹ transitions. Electronic structure …
A Comprehensive Approach Addressing The Most Chronic And Emerging Contaminants Along The Egyptian Mediterranean Coast, Tarek O. Said
A Comprehensive Approach Addressing The Most Chronic And Emerging Contaminants Along The Egyptian Mediterranean Coast, Tarek O. Said
Blue Economy
Newly identified substances known as emerging contaminants (ECs) are harmful to the environment and public health, frequently because limited regulation and incomplete understanding of their impacts. They comprise a broad variety of materials, such as insecticides, industrial wastes, personal care items, and medications. Persistent pollutants (POPs) are organic compounds that have remained in the environment for an extended period of time. They tend to move through the atmosphere over enormous distances making them a chronic contaminant and may harm ecology and humanity over time. In Egypt, particularly within its Mediterranean Exclusive Economic Zone (EEZ), heavy metal (HM) contamination is increasingly …
Save The Date! March 20-22, 2026 Eastern Bird Banding Association Conference And Meeting, Annie Lindsay
Save The Date! March 20-22, 2026 Eastern Bird Banding Association Conference And Meeting, Annie Lindsay
North American Bird Bander
No abstract provided.
Message From The President, Aaron Given
Message From The President, Aaron Given
North American Bird Bander
No abstract provided.
Timing Of Leg Scale Molt In The Black-Capped Vireo, David A. Cimprich
Timing Of Leg Scale Molt In The Black-Capped Vireo, David A. Cimprich
North American Bird Bander
The podotheca is the scaly covering of the bare portions of bird legs. Although it is known that birds periodically replace these scales, the process has only been described in any detail for two species. The purpose of this investigation was to describe the timing of podothecal molt in the Black-capped Vireo (Vireo atricapilla) in relation to both date and the progress of the prebasic feather molt. I captured these birds throughout the time they were present at a site within their breeding range in central Texas. I noted the presence of leg scale molt and scored the molt of …
Boreal Chickadee Notes From Alaska, Michael R. North
Boreal Chickadee Notes From Alaska, Michael R. North
North American Bird Bander
I banded 36 Boreal Chickadees (Poecile hudsonicus) and had 27 recaptures for a total of 63 encounters in Anchorage, Alaska, from 1990-1995. Boreal Chickadees mean weight and fat accumulation did not vary between seasons; overall annual mean weight was 11.4 g. During fall and winter measured weight increased during daylight hours, but in summer birds maintained a steady weight throughout the day. Winter weight gain throughout the day was calculated to equal about 11.7% of base body weight. Wing, tail, and tarsal measurement averages and ranges are provided. Body, crown, and remige molt was heaviest in late July and August, …
Recent Literature, Claire Stuyck