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A numerical model is developed to study heat, fluid flow and radiation transfers during the interaction between a UV laser beam and copper. Calculations are performed for a laser of Gaussian and Lorentzian shapes of a wavelength of 400nm, a…

Computational Physics · Physics 2019-05-07 Joseph Dgheim

In this article, we propose a new BSS approach for identifying skin diseases from RGB images that proceeds in two steps. We begin by separating the three main chromophores (oxyhemoglobin, deoxyhemoglobin and melanin) using Non-negative…

Medical Physics · Physics 2023-10-03 Mustapha Zokay , Hicham Saylani

Silver, especially in the form of nanostructures, is widely employed as an antimicrobial agent in a large range of commercial products. The origin of the biocidal mechanism has been elucidated in the last decades, and most likely originates…

(Abridged) We show that sizeable fractions of incident ionizing radiation from stochastic astrophysical sources can be redistributed to biologically and chemically important UV wavelengths, a significant fraction of which can reach the…

Astrophysics · Physics 2016-06-10 David S. Smith , John Scalo , J. Craig Wheeler

Background: Highly effective direct-acting antiviral (DAA) regimens (90% efficacy) are becoming available for hepatitis C virus (HCV) treatment. This therapeutic revolution leads us to consider possibility of eradicating the virus. However,…

Populations and Evolution · Quantitative Biology 2015-06-10 Anthony Cousien , Viet Chi Tran , Sylvie Deuffic-Burban , Marie Jauffret-Roustide , Jean-Stéphane Dhersin , Yazdan Yazdanpanah

Skin colour detection is frequently been used for searching people, face detection, pornographic filtering and hand tracking. The presence of skin or non-skin in digital image can be determined by manipulating pixels colour or pixels…

Computer Vision and Pattern Recognition · Computer Science 2012-12-13 Ghazali Osman , Muhammad Suzuri Hitam , Mohd Nasir Ismail

Thermal cooling mechanisms of human exposed to electromagnetic (EM) radiation are studied in detail. The electromagnetic and thermal co-simulation method is utilized to calculate the electromagnetic and temperature distributions. Moreover,…

Early detection of melanoma is difficult for the human eye but a crucial step towards reducing its death rate. Computerized detection of these melanoma and other skin lesions is necessary. The central research question in this paper is "How…

Image and Video Processing · Electrical Eng. & Systems 2019-10-24 Beril Sirmacek , Max Kivits

Antimicrobial-resistant (AMR) microbes are a growing challenge in healthcare, rendering modern medicines ineffective. AMR arises from antibiotic production and bacterial evolution, but quantifying its transmission remains difficult. With…

Machine Learning · Computer Science 2025-02-04 Qian Fu , Yuzhe Zhang , Yanfeng Shu , Ming Ding , Lina Yao , Chen Wang

A geometric model based on a spherical Fermi - surface and using the equivalent skin-layer model allows to calculate the surface resistance, which is relevant for the RF power losses in the cavity walls. An exact solution for this…

Applied Physics · Physics 2024-04-11 Ulrich Ratzinger , Huifang Wang

Three-dimensional (3D) CMOS technology encourages the use of UV laser annealing (UV-LA) because the shallow absorption of UV light into materials and the process timescale typically from nanoseconds (ns) to microseconds (us) strongly limit…

We derive transformation equations between GALEX and UBV colours by using the reliable data of 556 stars. We present two sets of equations; as a function of (only) luminosity class, and as a function of both luminosity class and…

Solar and Stellar Astrophysics · Physics 2020-06-17 S. Bilir , N. Alan , S. Tuncel Guctekin , M. Celebi , T. Yontan , O. Plevne , S. Ak , T. Ak , S. Karaali

Recently we proposed a paradigm shift in light confinement strategy showing how relaxed total internal reflection and photonic skin-depth engineering can lead to sub-diffraction waveguides without metal (S. Jahani and Z. Jacob, "Transparent…

Optics · Physics 2015-06-09 Saman Jahani , Zubin Jacob

Astrophysical ionizing radiation events have been recognized as a potential threat to life on Earth, primarily through depletion of stratospheric ozone and subsequent increase in surface-level solar ultraviolet radiation. Simulations of the…

Earth and Planetary Astrophysics · Physics 2015-03-26 Brian C. Thomas , Patrick J. Neale , Brock R. Snyder

The difficulty of detecting mitosis and its similarity to non-mitosis objects has remained a challenge in computational pathology. The lack of publicly available data has added more complexity. Deep learning algorithms have shown potentials…

Image and Video Processing · Electrical Eng. & Systems 2021-10-25 Seyed H. Mirjahanmardi , Samir Mitha , Salar Razavi , Susan Done , April Khademi

Direct and alternating current iontophoresis and electro-osmosis methodologies have provided new methods of transcutaneous drug delivery. A byproduct of such methods is lowering the electrical impedance of the electrode to skin contact, as…

Medical Physics · Physics 2017-11-06 Pavel Govyadinov , Sergei Turovets , Amanda Gunn , Don Tucker , Phan Luu

We have demonstrated OPV accelerated degradation studies using concentrated sunlight, where the atmosphere, temperature and illumination intensity were independently controlled. Testing various schemes for controlling the sample temperature…

Bacterial infections are responsible for high mortality worldwide. Antimicrobial resistance underlying the infection, and multifaceted patient's clinical status can hamper the correct choice of antibiotic treatment. Randomized clinical…

Machine Learning · Statistics 2022-07-18 Inyoung Jun , Simone Marini , Christina A. Boucher , J. Glenn Morris , Jiang Bian , Mattia Prosperi

There has been a steady increase in the incidence of skin cancer worldwide, with a high rate of mortality. Early detection and segmentation of skin lesions are crucial for timely diagnosis and treatment, necessary to improve the survival…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Sulaiman Vesal , Nishant Ravikumar , Andreas Maier

The fast degradation of collagen-based membranes in the biological environment remains a critical challenge, resulting in underperforming Guided Bone Regeneration (GBR) therapy leading to compromised clinical results. Photoactive…

Tissues and Organs · Quantitative Biology 2021-12-16 He Liang , Jie Yin , Kenny Man , Xuebin B. Yang , Elena Calciolari , Nikolaos Donos , Stephen J. Russell , David J. Wood , Giuseppe Tronci