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https://www.readbyqxmd.com/read/28227524/a-feasibility-study-of-using-event-related-potential-as-a-biometrics
#1
Yih-Choung Yu, Sicheng Wang, Lisa A Gabel, Yih-Choung Yu, Sicheng Wang, Lisa A Gabel, Lisa A Gabel, Yih-Choung Yu, Sicheng Wang
The use of an individual's neural response to stimuli (the event-related potential or ERP) has potential as a biometric because it is highly resistant to fraud relative to other conventional authentication systems. P300 is an ERP in human electroencephalography (EEG) that occurs in response to an oddball stimulus when an individual is actively engaged in a target detection task. Because P300 is consistently detectable from almost every subject, it is considered a potential signal for biometric applications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227038/secure-access-to-patient-s-health-records-using-speechxrays-a-mutli-channel-biometrics-platform-for-user-authentication
#2
Emmanouil G Spanakis, Marios Spanakis, Apostolos Karantanas, Kostas Marias, Emmanouil G Spanakis, Marios Spanakis, Apostolos Karantanas, Kostas Marias, Emmanouil G Spanakis, Apostolos Karantanas, Marios Spanakis, Kostas Marias
The most commonly used method for user authentication in ICT services or systems is the application of identification tools such as passwords or personal identification numbers (PINs). The rapid development in ICT technology regarding smart devices (laptops, tablets and smartphones) has allowed also the advance of hardware components that capture several biometric traits such as fingerprints and voice. These components are aiming among others to overcome weaknesses and flaws of password usage under the prism of improved user authentication with higher level of security, privacy and usability...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226905/passthoughts-authentication-with-low-cost-eareeg
#3
Max T Curran, Jong-Kai Yang, Nick Merrill, John Chuang, Max T Curran, Jong-Kai Yang, Nick Merrill, John Chuang, Jong-Kai Yang, Max T Curran, John Chuang, Nick Merrill
Personal and wearable computing are moving toward smaller and more seamless devices. We explore how this trend could be mirrored in an authentication scheme based on electroencephalography (EEG) signals collected from the ear. We evaluate this model using a low cost, single-channel, consumer grade device for data collection. Using data from 12 study participants who performed a set of 5 mental tasks, we achieve a 44% reduction in half total error rate (HTER) compared with a random classifier, corresponding to a 72% authentication accuracy in within-participants analyses and a 60% reduction and 80% accuracy in between-participant analyses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226719/a-new-hybrid-watermarking-algorithm-for-mri-medical-images-using-dwt-and-hash-functions
#4
F Taher, A Kunhu, H AlAhmad, F Taher, A Kunhu, H AlAhmad, H AlAhmad, A Kunhu, F Taher
This paper deals with a blind hybrid digital watermarking algorithm for the copyright protection and authentication of magnetic resonance tomography images. Medical image watermarking requires extreme care when embedding watermark information in the medical images, to protect the image quality from being violated and to avoid the wrong diagnosis that might occur. The proposed algorithm contains robust watermark for the ownership protection and fragile watermarks for checking the authenticity. In the proposed algorithm, the medical image is divided into two regions, called the Region of Interest and Region of Non-Interest using histogram technique and the watermarks are embedded in both wavelet domain and spatial domain in the Region of Non-Interest Area...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226716/robust-watermarking-in-non-roi-of-medical-images-based-on-dct-dwt
#5
M Jamali, S Samavi, N Karimi, S M R Soroushmehr, K Ward, K Najarian, M Jamali, S Samavi, N Karimi, S M R Soroushmehr, K Ward, K Najarian, K Ward, S M R Soroushmehr, M Jamali, S Samavi, K Najarian, N Karimi
Increasing demand and utilization of telemedicine require transmission of medical information and images over internet. Since authenticity of received images is crucial and patient's information should be included with minimum changes in images, robust watermarking schemes are needed. In this paper, we propose a robust watermark method that embeds patient's information outside the region of interest (ROI) in medical image. In order to find appropriate regions for embedding, we use saliency as a means of measuring importance of regions and find blocks having minimum overlap with the ROI...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226631/high-accuracy-user-identification-using-eeg-biometrics
#6
Toshiaki Koike-Akino, Ruhi Mahajan, Tim K Marks, Ye Wang, Shinji Watanabe, Oncel Tuzel, Philip Orlik, Toshiaki Koike-Akino, Ruhi Mahajan, Tim K Marks, Ye Wang, Shinji Watanabe, Oncel Tuzel, Philip Orlik, Ruhi Mahajan, Tim K Marks, Shinji Watanabe, Oncel Tuzel, Ye Wang, Philip Orlik, Toshiaki Koike-Akino
We analyze brain waves acquired through a consumer-grade EEG device to investigate its capabilities for user identification and authentication. First, we show the statistical significance of the P300 component in event-related potential (ERP) data from 14-channel EEGs across 25 subjects. We then apply a variety of machine learning techniques, comparing the user identification performance of various different combinations of a dimensionality reduction technique followed by a classification algorithm. Experimental results show that an identification accuracy of 72% can be achieved using only a single 800 ms ERP epoch...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28220554/changes-in-stable-isotope-ratios-in-pdo-cheese-related-to-the-area-of-production-and-green-forage-availability-the-case-study-of-pecorino-siciliano
#7
Bernardo Valenti, Luisa Biondi, Luca Campidonico, Luana Bontempo, Giuseppe Luciano, Fortunato Di Paola, Venera Copani, Luca Ziller, Federica Camin
RATIONALE: No study has investigated the variations of stable isotope ratios (SIRs) of bioelements within a Protected Designations of Origin (PDO) cheese and few studies have focused on the dietary background of animals. For traceability purposes, it is important to know how and whether these issues affect SIRs in a PDO cheese. METHODS: Thirty-six Pecorino Siciliano cheese samples were collected in three east-Sicilian areas in seasons in which green herbage was present or absent in an animal's diet...
February 20, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28220333/developing-skilled-doctor-patient-communication-in-the-workplace-a-qualitative-study-of-the-experiences-of-trainees-and-clinical-supervisors
#8
Esther Giroldi, Wemke Veldhuijzen, Kristel Geelen, Jean Muris, Frits Bareman, Herman Bueving, Trudy van der Weijden, Cees van der Vleuten
To inform the development of recommendations to facilitate learning of skilled doctor-patient communication in the workplace, this qualitative study explores experiences of trainees and supervisors regarding how trainees learn communication and how supervisors support trainees' learning in the workplace. We conducted a qualitative study in a general practice training setting, triangulating various sources of data to obtain a rich understanding of trainees and supervisors' experiences: three focus group discussions, five discussions during training sessions and five individual interviews...
February 20, 2017: Advances in Health Sciences Education: Theory and Practice
https://www.readbyqxmd.com/read/28219763/utility-of-japanese-encephalitis-virus-subgenomic-replicon-based-single-round-infectious-particles-as-antigens-in-neutralization-tests-for-zika-virus-and-three-other-flaviviruses
#9
Atsushi Yamanaka, Meng Ling Moi, Tomohiko Takasaki, Ichiro Kurane, Mami Matsuda, Ryosuke Suzuki, Eiji Konishi
The introduction of a foreign virus into an area may cause an outbreak, as with the Zika virus (ZIKV) outbreak in the Americas. Preparedness for handling a viral outbreak involves the development of tests for the serodiagnosis of foreign virus infections. We previously established a gene-based technology to generate some flaviviral antigens useful for functional antibody assays. The technology utilizes a Japanese encephalitis virus subgenomic replicon to generate single-round infectious particles (SRIPs) that possess designed surface antigens...
February 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28219727/economic-botany-collections-a-source-of-material-evidence-for-exploring-historical-changes-in-chinese-medicinal-materials
#10
Eric Brand, Christine Leon, Mark Nesbitt, Ping Guo, Ran Huang, Hubiao Chen, Li Liang, Zhongzhen Zhao
ETHNOPHARMACOLOGICAL RELEVANCE: Many Chinese medicinal materials (CMMs) have changed over centuries of use, particularly in terms of their botanical identity and processing methods. In some cases, these changes have important implications for safety and efficacy in modern clinical practice. As most previous research has focused on clarifying the evolution of CMMs by analyzing traditional Chinese materia medica ("bencao") literature, assessments of historical collections are needed to validate these conclusions with material evidence...
February 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28218787/genetic-relationships-in-a-germplasm-collection-of-camellia-japonica-and-camellia-oleifera-using-ssr-analysis
#11
Y Zhao, C J Ruan, G J Ding, S Mopper
Camellia japonica produces different color and bigger flowers, widely being used for gardening green in southern China. However, cultivars were introduced from different regions, but their origin and pedigree information is either not available poorly documented, causing problems in authentication. Many low-yield trees in Camellia oleifera forests have been used as stocks for grafting C. japonica. However, the survival rate of grafts between these two species is related to genetic relationship between stock of C...
February 16, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28217148/profiling-metals-in-cordyceps-sinensis-by-using-inductively-coupled-plasma-mass-spectrometry
#12
Xin Wei, Hankun Hu, Baogeng Zheng, Zikri Arslan, Hung-Chung Huang, Weidong Mao, Yi-Ming Liu
Cordyceps sinensis (C. sinensis) is a natural product that has diverse nutritional and medicinal values. Since the availability of natural C. sinensis becomes limited its authentication and quality control is of high significance. Herein we report on profiling of metals in C. sinensis by using inductively coupled plasma mass spectrometry (ICP-MS). The analysis reveals that C. sinensis contains a wide array of essential elements, including P, Mg, Zn, Cu, Fe, etc. Toxic metals detected are Cd, Pb, and As. In all five samples analyzed Pb contents are below 2...
January 28, 2017: Analytical Methods: Advancing Methods and Applications
https://www.readbyqxmd.com/read/28216885/simultaneous-determination-of-eight-phenolic-acids-five-saponins-and-four-tanshinones-for-quality-control-of-compound-preparations-containing-danshen-sanqi-herb-pair-by-hplc-dad
#13
Hong Yao, Xiaomei Huang, Shaoguang Li, Youjia Wu, Xinhua Lin, Peiying Shi
BACKGROUND: The herb-pair, Salviaemiltiorrhizae (Danshen, DS) and Panaxnotoginseng (Sanqi,SQ), often occurs in traditional Chinese medicine prescriptions used for the treatment of cardiovascular diseases in clinics in Asian areas. Many commercial preparations containing the DS-SQ herb-pair were produced by various manufactures with the different production process. The raw materials were from different sources, which raised a challenge to control the quality of the herb-pair medicines...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216657/a-strategic-design-of-an-opto-chemical-security-device-with-resettable-and-reconfigurable-password-based-upon-dual-channel-two-in-one-chemosensor-molecule
#14
Tapas Majumdar, Basudeb Haldar, Arabinda Mallick
A simple strategy is proposed to design and develop an intelligent device based on dual channel ion responsive spectral properties of a commercially available molecule, harmine (HM). The system can process different sets of opto-chemical inputs generating different patterns as fluorescence outputs at specific wavelengths which can provide an additional level of protection exploiting both password and pattern recognitions. The proposed system could have the potential to come up with highly secured combinatorial locks at the molecular level that could pose valuable real time and on-site applications for user authentication...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216091/enantiomeric-and-quantitative-analysis-of-volatile-terpenoids-in-different-teas-camellia-sinensis
#15
Yin Zhu, Chen-Yang Shao, Hai-Peng Lv, Yue Zhang, Wei-Dong Dai, Li Guo, Jun-Feng Tan, Qun-Hua Peng, Zhi Lin
Volatile terpenoids play important roles in the formation of tea aroma quality due to their pleasant scents and low odor thresholds. Most volatile terpenoids contain stereogenic centers, which results in various stereo distributions of their enantiomers and diastereoisomers in different types of tea. However, the distribution characteristics of terpenoid enantiomers in teas were still unclear, which poses an obstacle to the scientific understanding of tea aroma. In this work, a new and efficient analysis approach based on headspace solid phase microextraction (HS-SPME)-chiral gas chromatography-mass spectrometry (GC-MS) was established to analyze 12 pairs of familiar terpenoid enantiomers in different teas...
February 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28214451/a-novel-lc-ms-ms-method-for-the-simultaneous-quantification-of-topiramate-and-its-main-metabolites-in-human-plasma
#16
Daniela Milosheska, Robert Roškar
The aim of the present report was to develop and validate simple, sensitive and reliable LC-MS/MS method for quantification of topiramate (TPM) and its main metabolites: 2,3-desisopropylidene TPM, 4,5-desisopropylidene TPM, 10-OH TPM and 9-OH TPM in human plasma samples. The most abundant metabolite 2,3-desisopropylidene TPM was isolated from patients urine, characterized and afterwards used as an authentic standard for method development and validation. Sample preparation method employs 100μL of plasma sample and liquid-liquid extraction with a mixture of ethyl acetate and diethyl ether as extraction solvent...
February 3, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28214058/phylogenetic-multilocus-sequence-analysis-of-indigenous-slow-growing-rhizobia-nodulating-cowpea-vigna-unguiculata-l-in-greece
#17
Anastasia P Tampakaki, Christos T Fotiadis, Georgia Ntatsi, Dimitrios Savvas
Cowpea (Vigna unguiculata) is a promiscuous grain legume, capable of establishing efficient symbiosis with diverse symbiotic bacteria, mainly slow-growing rhizobial species belonging to the genus Bradyrhizobium. Although much research has been done on cowpea-nodulating bacteria in various countries around the world, little is known about the genetic and symbiotic diversity of indigenous cowpea rhizobia in European soils. In the present study, the genetic and symbiotic diversity of indigenous rhizobia isolated from field-grown cowpea nodules in three geographically different Greek regions were studied...
February 2, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28213882/a-standard-mutual-authentication-protocol-for-cloud-computing-based-health-care-system
#18
Prerna Mohit, Ruhul Amin, Arijit Karati, G P Biswas, Muhammad Khurram Khan
Telecare Medical Information System (TMIS) supports a standard platform to the patient for getting necessary medical treatment from the doctor(s) via Internet communication. Security protection is important for medical records (data) of the patients because of very sensitive information. Besides, patient anonymity is another most important property, which must be protected. Most recently, Chiou et al. suggested an authentication protocol for TMIS by utilizing the concept of cloud environment. They claimed that their protocol is patient anonymous and well security protected...
April 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28213186/enantioseparation-of-methamphetamine-by-supercritical-fluid-chromatography-with-cellulose-based-packed-column
#19
Hiroki Segawa, Yuko T Iwata, Tadashi Yamamuro, Kenji Kuwayama, Kenji Tsujikawa, Tatsuyuki Kanamori, Hiroyuki Inoue
The enantiomers of methamphetamine were differentiated by supercritical fluid chromatography (SFC) with an enantioselective cellulose-based packed column. The optimization of the chromatographic conditions was achieved by changing column temperature, co-solvent proportion, additive concentration, flow rate and back pressure. In particular, the additive concentration crucially changed the resolution between the enantiomers. After determining the optimized conditions, the enantiomers of methamphetamine were successfully separated...
February 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28213165/hbvcircle-a-novel-tool-to-investigate-hepatitis-b-virus-covalently-closed-circular-dna
#20
Zhipeng Yan, Jing Zeng, Youjun Yu, Kunlun Xiang, Hui Hu, Xue Zhou, Lili Gu, Li Wang, Jie Zhao, John A T Young, Lu Gao
BACKGROUND & AIMS: Hepatitis B virus (HBV) covalently closed circular DNA (cccDNA) persists as a stable episome in infected hepatocytes and serves as a template for the transcription of all viral genes. Due to the narrow host range of HBV, the development of a robust mouse model that supports cccDNA-dependent viral replication is a key hurdle in the development of novel HBV therapeutics. This study aimed to develop a novel tool to investigate HBV cccDNA. METHODS: Through minicircle technology, HBVcircle, a recombinant cccDNA, was easily generated and extracted from a genetically engineered E...
February 14, 2017: Journal of Hepatology
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