A Novel Multimodal Biometric Authentication System Using Machine Learning and Blockchain

Secure user authentication has become an important issue in modern society as in many consumer applications, especially financial transactions, it is extremely important to prove the identity of the user. In this context, biometric authentication methods that rely on physical and behavioural characteristics have been proposed as an alternative for convolutional systems that rely on simple passwords, Personal Identification Number or tokens. However, in real-world applications, authentication systems that involve a single biometric faced many issues, especially lack accuracy and noisy data, which boost the research community to create multibiometric systems that involve a variety of biometrics. Those systems provide better performance and higher accuracy compared to other authentication methods. However, most of them are inconvenient and requires complex interactions from the user. Thus, in this paper, we present a multimodal authentication system that relies on machine learning and blockchain, intending to provide a more reliable, transparent, and convenient authentication mechanism. The proposed system combines tow important biometrics: fingerprint and face with age, and gender features. The supervised learning algorithm Decision Tree has been used to combine the results of the biometrics verification process and produce a confidence level related to the user. The initial experimental results show the efficiency and robustness of the proposed systems

Thermal Investigation of Acid-Activated Clay-Minerals

WOS: A1987K41870000

Kinetics of the Thermal Dehydration of Acid-Activated Montmorillonite By the Rising Temperature Technique

WOS: A1990CV2810000

The Mechanism of Beta-Carotene Adsorption on Activated Montmorillonite

WOS: A1989AF9710000

Beta-Carotene Adsorption on Acid-Activated Montmorillonite

WOS: A1988N38850001

Evaluation of the optimal sampling approach for HPV genotyping in circumcised heterosexual men with genital warts

Background: Human papillomavirus (HPV) causes a serious socioeconomic burden globally. However, there is currently no consensus on the optimal sampling method for HPVDNA genotyping in circumcised heterosexual men. This study aimed to determine the diagnostic efficacy of 6 different anatomic sampling sites in HPV DNA polymerase chain reaction (PCR) testing of circumcised heterosexual men with genital warts. Methods: The study included circumcised heterosexual men who presented to our clinic with complaints of genital warts. Swab samples were obtained from the penile shaft (PS), scrotum, coronal sulcus (CS), and external urethral meatus (EUM). First-void urine (FVU) and genital wart biopsy (GWB) were also tested for HPV DNA by PCR. Results: A total of 32 patients (mean age: 36.9 ± 6.9 years) were included. None of the six samples studied was sufficient on its own to reveal all HPV types detected in a patient. When the samples were analyzed individually, GWB detected an average of 49.5% of total HPV types in a patient. This rate was 50.5% for PS, 40.4% for CS, 31.6% for scrotum, 26.3% for EUM, and 15.8% for FVU samples. The detection rate increased to 75.8% with combined testing of GWB and PS samples, 83.2% with GWB/PS/CS, 90.5% with GWB/PS/CS/scrotum, and 98.9% with GWB/PS/CS/scrotum/EUM samples. Conclusion: No single anatomic region or sample type can detect all HPV types present in circumcised heterosexual men by PCR assay. The detection rate approaches 99% when wart biopsy is combined with swab sampling of the penile shaft, coronal sulcus, scrotum, and external urethral meatus. © 2023 Japanese Society of Chemotherapy and The Japanese Association for Infectious Disease

Preparation of magnetite nanoparticle and fatty acid incorporated poly(methacrylic acid-ethyl acrylate) nanowebs via electrospinning for magnetic hyperthermia application

Magnetic hyperthermia has been arising as a promising approach for treatment of cancer. When magnetic nanoparticles (MNPs) are locally injected through cancerous tissues and subjected to an appropriate alternating magnetic field, they generate heat due to the rotation of the nanomagnets, causing the destruction of the cancer cells. For repeated applications of magnetic hyperthermia, it is highly preferred to keep the temperature constant at about 41-46 degrees C while preventing the leakage of MNPs, to minimize secondary effects on surrounding healthy tissues. In our study, we produced novel nanowebs provided with magnetic and thermal buffering properties by encapsulating MNPs and Lauric Acid in poly(methyl ethyl acrylate) matrix via uniaxial electrospinning. For the oleic acid functionalized magnetic nanoparticles, the magnetization for the corresponding nanowebs is higher by a factor of two for all concentrations than the ones with non-functionalized magnetic nanoparticles, indicating a more effective integration of the functionalized nanoparticles through the nanoweb. The heat absorption and release capacities of the nanowebs, incorporated with 1.25-2.50 % functionalized MNPs, vary between 70-75 Jg(-1) at 40-48 degrees C. They also demonstrate thermal cycling ability and thermal stability