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11 pages, 26172 KiB

Open AccessArticle

Radiocarbon Ages of a Possible Titian Painting

by Claudio Tuniz, Fabio Marzaioli, Filippo Terrasi, Isabella Passariello, Giuseppe Porzio and Paolo Molaro

Heritage 2025, 8(2), 63; https://doi.org/10.3390/heritage8020063 - 7 Feb 2025

Viewed by 735

Abstract

A radiocarbon study of a painting that might have been made by Titian or Tintoretto or by their workshops is presented. It could be the lost Titian self-portrait or, more convincingly, the sitter might be the Venetian Andrea Cappello, elected Procuratore de Supra in 1537 AD. Due to the variability in the concentration of atmospheric radiocarbon during the reference period, the calibrated ¹⁴C ages of the painted canvas are 1450–1530 and 1540–1635 AD (2

σ

), while those of the wooden frame are 1504–1597 and 1616–1657 AD (2

σ

). They are also consistent with previous analyses based on scanning macro X-ray fluorescence. These results, combined with stylistic, considerations suggest that the painting was made in the first half of the 16th century by Titian or his workshop. Circumstantial evidence that the painting was executed between 1523 and 1528 is also discussed. Full article

(This article belongs to the Special Issue It's All a Matter of Time: Exploring the Past, Present and Future of Artworks through Dating, Authentication, Material Characterization, Monitoring and Restoration)

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27 pages, 25360 KiB

Open AccessArticle

The Sublime Divinity: Erotic Affectivity in Renaissance Religious Art

by Maya Corry

Arts 2024, 13(4), 121; https://doi.org/10.3390/arts13040121 - 17 Jul 2024

Viewed by 5200

Abstract

In the context of the Catholic Reformation serious concerns were expressed about the affective potency of naturalistic depictions of beautiful, sensuous figures in religious art. In theological discourse similar anxieties had long been articulated about potential contiguities between elevating, licit desire for an extraordinarily beautiful divinity and base, illicit feeling. In the later fifteenth and early sixteenth centuries, in the decades preceding the Council of Trent, a handful of writers, thinkers and artists asserted a positive connection between spirituality and sexuality. Leonardo da Vinci, and a group of painters working under his aegis in Lombardy, were keenly aware of painting’s capacity to evoke feeling in a viewer. Pictures they produced for domestic devotion featured knowingly sensuous and unusually epicene beauties. This article suggests that this iconography daringly advocated the value of pleasurable sensation to religiosity. Its popularity allows us to envisage beholders who were neither mired in sin, nor seeking to divorce themselves from the physical realm, but engaging afresh with age-old dialectics of body and soul, sexuality and spirituality. Full article

(This article belongs to the Special Issue Affective Art)

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14 pages, 2177 KiB

Open AccessArticle

Accuracy of Anti-SARS-CoV-2 Antibody in Comparison with Surrogate Viral Neutralization Test in Persons Living with HIV, Systemic Lupus Erythematosus, and Chronic Kidney Disease

by Marita Restie Tiara, Chrisan Bimo Prayuda, Tara Titian Maulidya, Hofiya Djauhari, Dadang Suhendar, Rudi Wisaksana, Laniyati Hamijoyo, Rudi Supriyadi, Agnes Rengga Indrati and Bachti Alisjahbana

Vaccines 2024, 12(5), 558; https://doi.org/10.3390/vaccines12050558 - 20 May 2024

Viewed by 1837

Abstract

The presence of the anti-SARS-CoV-2-RBD antibody (anti-RBD) prevents severe COVID-19. We aimed to determine the accuracy of a point-of-care anti-RBD testing implemented in persons living with HIV (PLWH), systemic lupus erythematosus (SLE), and chronic kidney disease (CKD). We enrolled 182 non-comorbid subjects and 335 comorbid subjects (PLWH, SLE, CKD) to test the anti-RBD assay compared to the surrogate viral neutralization test (sVNT) as the reference test. We performed linear correlation analysis between anti-RBD and sVNT, along with an ROC analysis to ascertain the anti-RBD cutoff at 30%, 60%, and 90% inhibition of sVNT, to calculate accuracy. The correlations between anti-RBD and sVNT among all groups were excellent, with R = 0.7903, R = 0.7843, and R = 0.8153 among the non-comorbid, SLE, and CKD groups, respectively, and with significantly higher correlation among the PLWH group (R = 0.8877; p-value = 0.0072) compared to the non-comorbid group. The accuracy of the anti-RBD test among the PLWH and CKD groups was similar to that among the non-comorbid group but showed lower sensitivity in the SLE group (p = 0.000014). The specificity of the test remained high in all groups. In conclusion, the anti-RBD test had excellent correlation with the sVNT. The persistently high specificity in all groups suggests that this test can be reliably utilized to detect the presence of low neutralization capacity, prompting additional vaccination. Full article

(This article belongs to the Special Issue Immune Response of SARS-CoV-2 Infection and Anti-SARS-CoV-2 Vaccination)

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13 pages, 1580 KiB

Open AccessArticle

Facile Preparation of Carbon Nanotubes/Cellulose Nanofibrils/Manganese Dioxide Nanowires Electrode for Improved Solid-Sate Supercapacitor Performances

by Siew Xian Chin, Kam Sheng Lau, Riski Titian Ginting, Sin Tee Tan, Poi Sim Khiew, Chin Hua Chia and Chatchawal Wongchoosuk

Polymers 2023, 15(18), 3758; https://doi.org/10.3390/polym15183758 - 14 Sep 2023

Cited by 3 | Viewed by 2680

Abstract

Wearable energy storage devices require high mechanical stability and high-capacitance flexible electrodes. In this study, we design a flexible supercapacitor electrode consisting of 1-dimensional carbon nanotubes (CNT), cellulose nanofibrils (CNF), and manganese dioxide nanowires (MnO₂ NWs). The flexible and conductive CNT/CNF-MnO₂ NWs suspension was first prepared via ultrasonic dispersion approach, followed by vacuum filtration and hot press to form the composite paper electrode. The morphological studies show entanglement between CNT and CNF, which supports the mechanical properties of the composite. The CNT/CNF-MnO₂ NWs electrode exhibits lower resistance when subjected to various bending angles (−120–+120°) compared to the CNT/CNF electrode. In addition, the solid-state supercapacitor also shows a high energy density of 38 μWh cm⁻² and capacitance retention of 83.2% after 5000 cycles. Full article

(This article belongs to the Special Issue Functional Porous Polymers: Synthesis and Application)

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