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22 pages, 1727 KiB  
Article
Differential Neural Mechanisms of Feedback Processing in Children with Developmental Language Disorder: An Examination of Midfrontal Theta Connectivity
by Asiya Gul, Annika L. Schafer and Yael Arbel
Children 2024, 11(10), 1221; https://doi.org/10.3390/children11101221 (registering DOI) - 8 Oct 2024
Abstract
Background/Objectives: Previous research indicates that children with Developmental Language Disorder (DLD) face challenges learning from feedback, resulting in suboptimal performance and learning outcomes. Feedback processing, a key developing executive function, involves cognitive processes critical for goal-directed behavior. This study examined the neural mechanisms [...] Read more.
Background/Objectives: Previous research indicates that children with Developmental Language Disorder (DLD) face challenges learning from feedback, resulting in suboptimal performance and learning outcomes. Feedback processing, a key developing executive function, involves cognitive processes critical for goal-directed behavior. This study examined the neural mechanisms underlying feedback processing in school-age children with DLD compared to typically developing (TD) peers, focusing on midfrontal theta band (4–8 Hz) oscillations as an index of cognitive control and error monitoring. Methods: We measured midfrontal theta inter-trial coherence (ITC) and inter-site coherence (ISC) at midfrontal (FCz), lateral prefrontal (F3/F4), and lateral central (C3/C4) sites in children with and without DLD (n = 33, age 8–13 years) in response to feedback provision within a Wisconsin Card Sorting Test (WCST) in two time windows (200–400 ms, which is associated with the Feedback-Related Negativity, or FRN, and 400–600 ms, which is associated with the P3a). Results: Children with and without DLD showed elevated midfrontal theta oscillations in response to negative feedback that was followed by successful behavioral adjustments in the FRN time window. Activation in the P3a time window was only found in the TD group. Group differences were also noted in the inter-site coherence (ISC) associated with the effective processing of negative feedback. While in the TD group, effective processing of negative feedback was linked to high connectivity between midfrontal and right sensorimotor regions, in the DLD group, effective processing of negative feedback was associated with high connectivity between midfrontal and left sensorimotor sites. Conclusions: Differential ISC patterns in children with DLD may indicate that they employ alternative or compensatory neural strategies, possibly due to atypical right sensorimotor engagement. Full article
(This article belongs to the Section Pediatric Neurology & Neurodevelopmental Disorders)
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15 pages, 1253 KiB  
Article
The Impact of Insecure Attachment on Emotional Dependence on a Partner: The Mediating Role of Negative Emotional Rejection
by Janire Momeñe, Ana Estévez, Mark D. Griffiths, Patricia Macía, Marta Herrero, Leticia Olave and Itziar Iruarrizaga
Behav. Sci. 2024, 14(10), 909; https://doi.org/10.3390/bs14100909 (registering DOI) - 8 Oct 2024
Abstract
Previous evidence has demonstrated a relationship between insecure attachment and the development of emotional dependence towards an individual’s partner. However, the possibility that this relationship may be indirect and mediated by individual factors such as difficulties in emotional regulation has not previously been [...] Read more.
Previous evidence has demonstrated a relationship between insecure attachment and the development of emotional dependence towards an individual’s partner. However, the possibility that this relationship may be indirect and mediated by individual factors such as difficulties in emotional regulation has not previously been explored. Consequently, the objectives of the present study were to analyze the (i) differences in emotional dependence on an individual’s partner and difficulties in emotional regulation capacity according to secure, preoccupied or dismissing attachment style and (ii) mediating role of difficulties in emotional regulation in the relationship between both insecure attachment styles and emotional dependence on an individual’s partner. The sample comprised 741 participants ranging in age from 18 to 30 years (M = 21.32, SD = 2.93). The mediations were tested with linear regressions with the macro PROCESS v4.0. The results showed that emotional dependence on a partner and difficulties in emotional regulation were greater among individuals who had developed a dismissing attachment compared those with secure or preoccupied attachment. Likewise, the mediation model confirmed the mediating role of difficulties in the capacity for emotional regulation in the relationship between dismissing attachment and emotional dependence, with rejection of negative or discomfort-generating emotions predominating. The findings provide preliminary evidence that rejection of negative emotional experiences may play an important role in the relationship between insecure dismissing attachment style and emotional dependence on an individual’s partner. Consequently, it is recommended that emotional dependence intervention programs include of the management of intolerance to negative emotions. Full article
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10 pages, 244 KiB  
Article
Depressive and Anxiety Symptoms in Community-Dwelling Women in Rural Areas of Greece in the Post-COVID-19 Pandemic Era
by Vaios Peritogiannis, Alexandra Mantziou, Nikolaos Vaitsis, Stamatina Aggelakou-Vaitsi, Maria Bakola and Eleni Jelastopulu
J. Clin. Med. 2024, 13(19), 5985; https://doi.org/10.3390/jcm13195985 (registering DOI) - 8 Oct 2024
Abstract
Background/Objectives: Depressive and anxiety syndromes are associated with elevated disability and are more prevalent in women. Data on the prevalence of depressive and anxiety disorders in the rural context are limited and contradictory. It is relevant to study common mental disorders in [...] Read more.
Background/Objectives: Depressive and anxiety syndromes are associated with elevated disability and are more prevalent in women. Data on the prevalence of depressive and anxiety disorders in the rural context are limited and contradictory. It is relevant to study common mental disorders in rural areas in the most vulnerable population of women, particularly in the post-COVID-19 pandemic era. Methods: This is a cross-sectional study that was conducted in two primary healthcare sites in the rural region of Farsala, Central Greece after the obviation of all restrictive measures that had been posed due to the COVID-19 pandemic. All consecutive female patients that attended the study sites for any non-emergent reason were asked to participate in the study. For the recording of symptoms of depression and anxiety, the self-reported Depression, Anxiety, Stress Scale-21 (DASS-21) was used. Results: The study sample consisted of 129 women. The majority of participants were >50 years, with 27.9% being older adults. A small percentage (13.2%) suffered a chronic physical disease. A large proportion of the sample, slightly exceeding 40%, reported clinically relevant symptoms of anxiety, whereas a lower percentage of women with depressive symptoms was detected (17.1%). Symptoms of anxiety and depression were found to be interrelated, while a number of sociodemographic variables were associated with both, such as older age, education (primary), living status (alone, OR 123.5; 95% CI: 7.3–2098.8 for anxiety; OR 3.5; 95% CI: 1.3–9.8 for depression), employment (not working, (OR 0.157; 95% CI: 0.06–0.41 for anxiety; OR 0.08; 95% CI: 0.01–0.62 for depression) and the history of a chronic disease (OR 33.8; 95% CI: 4.3–264.7 for anxiety; OR 37.2; 95% CI: 10–138.1 for depression). Self-rated financial status was not related to symptoms of anxiety or depression. Conclusions: The study highlights the importance of inquiring for symptoms of depression and anxiety in women attending the rural primary care setting. The use of valid and reliable self-reported instruments that are easy to administrate may be helpful in this regard. Full article
(This article belongs to the Section Mental Health)
12 pages, 747 KiB  
Article
Elevated Circulating Levels of Gut Microbe-Derived Trimethylamine N-Oxide Are Associated with Systemic Sclerosis
by Karen J. Ho, Lutfiyya N. Muhammad, Linh Ngo Khanh, Xinmin S. Li, Mary Carns, Kathleen Aren, Seok-Jo Kim, Priyanka Verma, Stanley L. Hazen and John Varga
J. Clin. Med. 2024, 13(19), 5984; https://doi.org/10.3390/jcm13195984 (registering DOI) - 8 Oct 2024
Abstract
Background/Objectives: Alterations in fecal microbial communities in patients with systemic sclerosis (SSc) are common, but the clinical significance of this observation is poorly understood. Gut microbial production of trimethylamine (TMA), and its conversion by the host to trimethylamine N-oxide (TMAO), has clinical [...] Read more.
Background/Objectives: Alterations in fecal microbial communities in patients with systemic sclerosis (SSc) are common, but the clinical significance of this observation is poorly understood. Gut microbial production of trimethylamine (TMA), and its conversion by the host to trimethylamine N-oxide (TMAO), has clinical and mechanistic links to cardiovascular and renal diseases. Direct provision of TMAO has been shown to promote fibrosis and vascular injury, hallmarks of SSc. We sought to determine levels of TMAO and related metabolites in SSc patients and investigate associations between the metabolite levels with disease features. Methods: This is an observational case:control study. Adults with SSc (n = 200) and non-SSc controls (n = 400) were matched for age, sex, indices of renal function, diabetes mellitus, and cardiovascular disease. Serum TMAO, choline, betaine, carnitine, γ-butyrobetaine, and crotonobetaine were measured using stable isotope dilution liquid chromatography tandem mass spectrometry. Results: Median TMAO concentration was higher (p = 0.020) in SSc patients (3.31 [interquartile range 2.18, 5.23] µM) relative to controls (2.85 [IQR 1.88, 4.54] µM). TMAO was highest among obese and male SSc participants compared to all other groups. Following adjustment for sex, BMI, age, race, and eGFR in a quantile regression model, elevated TMAO levels remained associated with SSc at each quantile of TMAO. Conclusions: Patients with SSc have increased circulating levels of TMAO independent of comorbidities including age, sex, renal function, diabetes mellitus, and cardiovascular disease. As a potentially modifiable factor, further studies examining the link between TMAO and SSc disease severity and course are warranted. Full article
(This article belongs to the Special Issue Advances in Clinical Rheumatology)
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16 pages, 2184 KiB  
Article
Age at Tumor Diagnosis in 14,636 Canine Cases from the Pathology-Based UNIPI Animal Cancer Registry, Italy: One Size Doesn’t Fit All
by Niccolò Fonti, Francesca Parisi, Alessio Lachi, Elena Sophie Dhein, Franco Guscetti, Alessandro Poli and Francesca Millanta
Vet. Sci. 2024, 11(10), 485; https://doi.org/10.3390/vetsci11100485 (registering DOI) - 8 Oct 2024
Abstract
Cancer is the most common cause of death in adult dogs. All dogs would benefit from early diagnosis, but there are no specific guidelines regarding the schedule of cancer screening in companion animals. The aim of this study was to retrospectively evaluate the [...] Read more.
Cancer is the most common cause of death in adult dogs. All dogs would benefit from early diagnosis, but there are no specific guidelines regarding the schedule of cancer screening in companion animals. The aim of this study was to retrospectively evaluate the age at diagnosis in Italian oncological canine patients. A total of 14,636 canine histologically confirmed neoplastic cases were coded according to the Vet-ICD-O-canine-1 and stratified by malignancy, sex, neutering status, breed, cephalic index, body size, and tumor type. Differences in age distribution were analyzed and the influence of these variables on the time of first malignancy diagnosis was assessed using an event history analysis model. The median age at diagnosis for benign and malignant tumors was 9 and 10 years, respectively. Intact and purebred dogs were diagnosed earlier, but the median age differed significantly by breed. The earliest age at diagnosis was recorded for lymphomas and mast cell tumors. The model showed an accelerating effect of large size, brachy- and dolichocephaly, and sexual integrity in female dogs on the time of malignancy diagnosis. Our results confirm that a “one-size-fits-all” approach to cancer screening is not accurate in dogs and provide relevant data that may lead to the establishment of breed-based screening schedules. Full article
(This article belongs to the Special Issue Focus on Tumours in Pet Animals)
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6 pages, 1234 KiB  
Reply
Definite Change Since the Formation of the Earth. Reply to Kleber, A. Comment on “Koutsoyiannis, D. Net Isotopic Signature of Atmospheric CO2 Sources and Sinks: No Change Since the Little Ice Age. Sci 2024, 6, 17”
by Demetris Koutsoyiannis
Sci 2024, 6(4), 63; https://doi.org/10.3390/sci6040063 (registering DOI) - 8 Oct 2024
Abstract
Careful inspection of the title and graphical abstract of the original paper [...] Full article
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19 pages, 1527 KiB  
Article
Built Environment Influences on Emotional State Loneliness among Young Adults during Daily Activities: An Experience Sampling Approach
by Dominique Gijsbers, Pauline van den Berg and Astrid Kemperman
Buildings 2024, 14(10), 3199; https://doi.org/10.3390/buildings14103199 (registering DOI) - 8 Oct 2024
Abstract
Loneliness among young adults is a growing concern worldwide, posing serious health risks. While the human ecological framework explains how various factors such as socio-demographic, social, and built environment characteristics can affect this feeling, still, relatively little is known about the effect of [...] Read more.
Loneliness among young adults is a growing concern worldwide, posing serious health risks. While the human ecological framework explains how various factors such as socio-demographic, social, and built environment characteristics can affect this feeling, still, relatively little is known about the effect of built environment characteristics on the feelings of loneliness that young people experience in their daily life activities. This research investigates the relationship between built environment characteristics and emotional state loneliness in young adults (aged 18–25) during their daily activities. Leveraging the Experience Sampling Method, we collected data from 43 participants for 393 personal experiences during daily activities across different environmental settings. The findings of a mixed-effects regression model reveal that built environment features significantly impact emotional state loneliness. Notably, activity location accessibility, social company during activities, and walking activities all contribute to reducing loneliness. These findings can inform urban planners and municipalities to implement interventions that support youngsters’ activities and positive experiences to enhance well-being and alleviate feelings of loneliness in young adults. Specific recommendations regarding the built environment are (1) to create spaces that are accessible, (2) create spaces that are especially accessible by foot, and (3) provide housing with shared facilities for young adults rather than apartments/studios. Full article
(This article belongs to the Special Issue Research on Smart Healthy Cities and Real Estate)
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4 pages, 1306 KiB  
Comment
Comment on Koutsoyiannis, D. Net Isotopic Signature of Atmospheric CO2 Sources and Sinks: No Change Since the Little Ice Age. Sci 2024, 6, 17
by Arno Kleber
Sci 2024, 6(4), 62; https://doi.org/10.3390/sci6040062 (registering DOI) - 8 Oct 2024
Abstract
In his paper [...] Full article
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23 pages, 5108 KiB  
Article
Colour Preferences for Surface Shapes on Residential Interior Walls
by Begüm Ulusoy
Architecture 2024, 4(4), 854-876; https://doi.org/10.3390/architecture4040045 (registering DOI) - 8 Oct 2024
Abstract
Researchers have explored primary colour–geometric shape associations since Kandinsky’s correspondence theory. However, there is a gap in the literature regarding interior colour applications on surface shapes. To address this gap, an online study was employed to gather data with 100 participants who were [...] Read more.
Researchers have explored primary colour–geometric shape associations since Kandinsky’s correspondence theory. However, there is a gap in the literature regarding interior colour applications on surface shapes. To address this gap, an online study was employed to gather data with 100 participants who were asked to choose their preferred colours for shapes on bedroom walls with follow-up questions on the colour–shape semantic associations, their preference of colours and shapes on bedroom walls independently in addition to their favourite colour, their favourite shape, and colour–shape pairs without interior context. The results revealed that colour–shape preferences in interiors differ from those found in psychology studies, other colour applications on bedroom walls, and other preferences, indicating that colour preference is context-dependent. Interestingly, the most popular colour for surface shapes on bedroom walls is purple, followed by brown and blue. The study contributes to the existing literature by providing colour charts for bedroom applications for professionals in the industry, their clients/users, and future studies. The study presents a preliminary exploration of the topic. Further research could compare various demographic properties (such as gender, age, and culture), different colour attributes (including saturation and lightness), and complex geometric shapes. Full article
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12 pages, 444 KiB  
Article
The Cross-Sectional and Longitudinal Associations between Household Chaos, Perceived Stress, and Borderline Personality Disorder Features in Outpatient Youth
by Anouk Aleva, Geerte de Boois, Christel J. Hessels and Odilia M. Laceulle
Youth 2024, 4(4), 1469-1480; https://doi.org/10.3390/youth4040093 (registering DOI) - 8 Oct 2024
Abstract
This study examined how household chaos, perceived stress, and their interaction are related to borderline personality disorder (BPD) features both cross-sectionally and at 1-year follow-up in outpatient youth. Data from 143 youth were analysed. Their mean age was 18.72 years (SD = [...] Read more.
This study examined how household chaos, perceived stress, and their interaction are related to borderline personality disorder (BPD) features both cross-sectionally and at 1-year follow-up in outpatient youth. Data from 143 youth were analysed. Their mean age was 18.72 years (SD = 2.98) and 80.4% self-identified as female. The results indicated that both perceived stress and household chaos were positively associated with BPD features at baseline. Additionally, the link between perceived stress and BPD features was slightly stronger in youth with more household chaos. The associations were not maintained in the longitudinal analyses. The discrepancy between the cross-sectional and longitudinal findings suggests that household chaos and perceived stress might be intertwined with BPD features, rather than predictive of change in BPD features over time. Full article
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14 pages, 1953 KiB  
Article
Impact of Inhaled Nitric Oxide (iNO) on the Outcome of COVID-19 Associated ARDS
by Sandra Emily Stoll, Bernd W. Böttiger, Fabian Dusse, Nicolas Leister, Tobias Leupold, Christoph Menzel, Remco Overbeek and Alexander Mathes
J. Clin. Med. 2024, 13(19), 5981; https://doi.org/10.3390/jcm13195981 (registering DOI) - 8 Oct 2024
Abstract
Background: Inhaled nitric oxide (iNO) can improve oxygenation in acute respiratory syndrome (ARDS), has anti-inflammatory and antithrombotic effects, and can inhibit coronavirus- replication. The study aim was to investigate the impact of iNO in COVID-19 associated ARDS (CARDS) on oxygenation, the length of [...] Read more.
Background: Inhaled nitric oxide (iNO) can improve oxygenation in acute respiratory syndrome (ARDS), has anti-inflammatory and antithrombotic effects, and can inhibit coronavirus- replication. The study aim was to investigate the impact of iNO in COVID-19 associated ARDS (CARDS) on oxygenation, the length of mechanical ventilation (MV), the level of inflammatory markers and the rate of thrombotic events during ICU stay. Methods: This was a retrospective, observational, monocentric study analyzing the effect of INO (15 parts per million) vs. non-iNO in adult ventilated CARDS patients on oxygenation, the level of inflammatory markers, and the rate of thrombotic events during ICU stay. Within the iNO group, the impact on gas exchange was assessed by comparing arterial blood gas results obtained at different time points. Results: Overall, 19/56 patients were treated with iNO, with no difference regarding sex, age, body mass index, and SOFA-/APACHE II- score between the iNO and non-iNO groups. iNO improved oxygenation in iNO-responders (7/19) and had no impact on inflammatory markers or the rate of thrombotic events but was associated with an increased MV length. Conclusions: iNO was able to improve oxygenation in CARDS in iNO-responders but did not show an impact on inflammatory markers or the rate of thrombotic events, while it was associated with an increased MV length. Full article
(This article belongs to the Special Issue Critical Care during COVID-19 Pandemic)
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16 pages, 851 KiB  
Article
Adiponectin and Inflammatory Marker Levels in the Elderly Patients with Diabetes, Mild Cognitive Impairment and Depressive Symptoms
by Malgorzata Gorska-Ciebiada and Maciej Ciebiada
Int. J. Mol. Sci. 2024, 25(19), 10804; https://doi.org/10.3390/ijms251910804 (registering DOI) - 8 Oct 2024
Abstract
Some studies suggest that low-grade inflammation and adipokines may be involved in mild cognitive impairment (MCI) and depression in subjects with type 2 diabetes; however, the available data concerning the elderly population are limited. Therefore, we conducted novel research to determine the serum [...] Read more.
Some studies suggest that low-grade inflammation and adipokines may be involved in mild cognitive impairment (MCI) and depression in subjects with type 2 diabetes; however, the available data concerning the elderly population are limited. Therefore, we conducted novel research to determine the serum adiponectin, hs-CRP and TNF-α levels in elderly diabetic patients with MCI and depressive symptoms and to identify the factors associated with MCI in this group. A total of 178 diabetic patients (mean age 84.4 ± 3.4 years) were screened for MCI and depressive symptoms. Various biochemical and biomarker data were collected. We found that patients with MCI and depressive symptoms demonstrated lower adiponectin levels and high hs-CRP and TNF-α. In this group, adiponectin concentration was negatively correlated with hs-CRP, TNF-α, HbA1c, and GDS-30 scores and positively correlated with MoCA scores. Multivariable analysis found the risk of MCI to be associated with higher TNF-α levels, fewer years of formal education, an increased number of comorbidities, and the presence of CVD. We concluded that low-grade inflammation and the presence of adipokines are associated with MCI and depressive symptoms in elderly diabetics. Further research should evaluate the suitability of Hs-CRP, TNF-α, and adiponectin as diagnostic markers for MCI and potential therapeutic targets. Full article
(This article belongs to the Special Issue Diabetes: Advances of Molecular Research)
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18 pages, 6875 KiB  
Article
Bicuspid Valve Aortopathy: Is It Reasonable to Define a Different Surgical Cutoff Based on Different Aortic Wall Mechanical Properties Compared to Those of the Tricuspid Valve?
by Pasquale Totaro, Alessandro Caimi, Giulia Formenton, Martina Musto, Martina Schembri, Simone Morganti, Stefano Pelenghi and Ferdinando Auricchio
J. Cardiovasc. Dev. Dis. 2024, 11(10), 312; https://doi.org/10.3390/jcdd11100312 (registering DOI) - 8 Oct 2024
Abstract
Background: In this study, we examined and compared ex vivo mechanical properties of aortic walls in patients with bicuspid (BAV) and tricuspid (TAV) aortic valve aortopathy to investigate if the anatomical peculiarities in the BAV group are related to an increased frailty of [...] Read more.
Background: In this study, we examined and compared ex vivo mechanical properties of aortic walls in patients with bicuspid (BAV) and tricuspid (TAV) aortic valve aortopathy to investigate if the anatomical peculiarities in the BAV group are related to an increased frailty of the aortic wall and, therefore, if a different surgical cutoff point for ascending aortic replacement could be reasonable in such patients. Methods: Ultimate stress tests were performed on fresh aortic wall specimens harvested during elective aortic surgery in BAV (n. 33) and TAV (n. 77) patients. Three mechanical parameters were evaluated at the failure point, under both longitudinal and circumferential forces: the peak strain (Pstr), peak stress (PS), and maximum elastic modulus (EM). The relationships between the three mechanical parameters and preoperative characteristics were evaluated, with a special focus on evaluating potential risk factors for severely impaired mechanical properties, cumulatively and comparatively (BAV vs. TAV groups). Results: The patient populations were inhomogeneous, as BAV patients reached surgical indication, according to the maximum aortic dilatation, at a younger age (58 ± 15 vs. 64 ± 13; p = 0.0294). The extent of the maximum aortic dilatation was, conversely, similar in the two groups (52 ± 4 vs. 54 ± 7; p = 0.2331), as well as the incidences of different phenotypes of aortic dilatation (with the ascending aorta phenotype being the most frequent in 81% and 66% of the BAV and TAV patients, respectively (p = 0.1134). Cumulatively, the mechanical properties of the aortic wall were influenced mainly by the orientation of the force applied, as both PS and EM were impaired under longitudinal stress. An age of >66 and a maximum dilatation of >52 mm were shown to predict severe Pstr reduction in the overall population. Comparative analysis revealed a trend of increased mechanical properties in the BAV group, regardless of the position, the force orientation, and the phenotype of the aortic dilatation. Conclusions: BAV aortopathy is not correlated with impaired mechanical properties of the aortic wall as such. Different surgical cutoff points for BAV aortopathy, therefore, seem to be unjustified. An age of >66 and a maximum aortic dilatation of >52 mm, however, seem to significantly influence the mechanical properties of the aortic wall in both groups. These findings, therefore, could suggest the need for more accurate monitoring and evaluation in such conditions. Full article
(This article belongs to the Section Acquired Cardiovascular Disease)
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13 pages, 849 KiB  
Article
Audio Deep Fake Detection with Sonic Sleuth Model
by Anfal Alshehri, Danah Almalki, Eaman Alharbi and Somayah Albaradei
Computers 2024, 13(10), 256; https://doi.org/10.3390/computers13100256 (registering DOI) - 8 Oct 2024
Abstract
Information dissemination and preservation are crucial for societal progress, especially in the technological age. While technology fosters knowledge sharing, it also risks spreading misinformation. Audio deepfakes—convincingly fabricated audio created using artificial intelligence (AI)—exacerbate this issue. We present Sonic Sleuth, a novel AI model [...] Read more.
Information dissemination and preservation are crucial for societal progress, especially in the technological age. While technology fosters knowledge sharing, it also risks spreading misinformation. Audio deepfakes—convincingly fabricated audio created using artificial intelligence (AI)—exacerbate this issue. We present Sonic Sleuth, a novel AI model designed specifically for detecting audio deepfakes. Our approach utilizes advanced deep learning (DL) techniques, including a custom CNN model, to enhance detection accuracy in audio misinformation, with practical applications in journalism and social media. Through meticulous data preprocessing and rigorous experimentation, we achieved a remarkable 98.27% accuracy and a 0.016 equal error rate (EER) on a substantial dataset of real and synthetic audio. Additionally, Sonic Sleuth demonstrated 84.92% accuracy and a 0.085 EER on an external dataset. The novelty of this research lies in its integration of datasets that closely simulate real-world conditions, including noise and linguistic diversity, enabling the model to generalize across a wide array of audio inputs. These results underscore Sonic Sleuth’s potential as a powerful tool for combating misinformation and enhancing integrity in digital communications. Full article
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9 pages, 1769 KiB  
Communication
Preparation of Antimicrobial Agents: From Interpolyelectrolyte Complexes to Silver-Containing Metal–Polymer Complexes and Nanocomposites
by Dmitry I. Klimov, Alexey A. Zharikov, Elena A. Zezina, Elena A. Kotenkova, Elena V. Zaiko, Dagmara S. Bataeva, Anastasia A. Semenova, Yulia K. Yushina, Aleksander A. Yaroslavov and Alexey A. Zezin
Polymers 2024, 16(19), 2842; https://doi.org/10.3390/polym16192842 (registering DOI) - 8 Oct 2024
Abstract
In order to control pathogenic microorganisms, three polymer compositions were prepared and tested. First, a water-soluble positively charged polycomplex was synthesized via the electrostatic binding of anionic polyacrylic acid to an excess of polyethylenimine to enhance the biocidal activity of the polycation. Second, [...] Read more.
In order to control pathogenic microorganisms, three polymer compositions were prepared and tested. First, a water-soluble positively charged polycomplex was synthesized via the electrostatic binding of anionic polyacrylic acid to an excess of polyethylenimine to enhance the biocidal activity of the polycation. Second, an aqueous solution of AgNO3 was added to the polycomplex, thus forming a ternary polycation-polyanion-Ag1+ complex with an additional antimicrobial effect. Third, the resulting ternary complex was subjected to UV irradiation, which ensured the conversion of Ag1+ ions into Ag nanoparticles ranging in size mainly from 10 to 20 nm. Aqueous solutions of the polymer compositions were added to suspensions of the Gram-positive bacteria S. aureus and the Gram-negative bacteria P. aeruginosa, with the following main results: (a) Upon the addition of the binary polycomplex, 30% or more of the cells survived after 20 h. (b) The ternary complex killed S. aureus bacteria but was ineffective against P. aeruginosa bacteria. (c) When the ternary complex with Ag nanoparticles was added, the percentage of surviving cells of both types did not exceed 0.03%. The obtained results are valuable for the development of antibacterial formulations. Full article
(This article belongs to the Special Issue Synthesis and Applications of Polymer-Based Nanocomposites)
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