Results 11 to 20 of about 3,528,903 (295)

Numerical Design and Investigation of Circularly Segmented Air Holes-Assisted Hollow-Core Terahertz Waveguide as Optical Chemical Sensor

IEEE Access, 2021
In this paper,a polarization-maintaining single-mode rectangular-shaped hollow-core waveguide with four segmented air cladding in the terahertz (THz) regime is presented for detecting various toxic industrial chemicals.
M. Hussayeen Khan Anik, S. M. Riazul Islam, Shovasis Kumar Biswas, M. Ifaz Ahmad Isti, Mohona Das Gupta, Md. Jalil Piran, Kyung-Sup Kwak, Hriteshwar Talukder   +7 more
doaj   +1 more source

Photonic Crystal Fiber Sensor for Detecting Sulfuric Acid in Different Concentrations

Photonics, 2022
A high-performance photonic crystal fiber sensor for sulfuric acid detection is designed and investigated, undertaken through a full vector Finite Element Method on COMSOL Multiphysics software to establish the optical properties of effective refractive ...
Abdul Mu’iz Maidi, Md. Abul Kalam, Feroza Begum   +2 more
doaj   +1 more source

Laboratory determination method and application of sensitive index and critical value for coal roadway outburst prediction

Meikuang Anquan, 2021
Aiming at the shortcomings of the “three-rate method” in determining the sensitive indicators for coal roadway outburst prediction and the threat of outburst to personnel during detection, in this paper, a laboratory method for determining the sensitive
JIANG Chenglin, YU Qixiang, ZHANG Chaojie
doaj   +1 more source

High-Sensitivity Early Detection Biomedical Sensor for Tuberculosis With Low Losses in the Terahertz Regime Based on Photonic Crystal Fiber Technology

Photonic Sensors, 2023
Tuberculosis is one of the most contagious and lethal illnesses in the world, according to the World Health Organization. Tuberculosis had the leading mortality rate as a result of a single infection, ranking above HIV/AIDS.
Nazmi A. Mohammed, Omar E. Khedr, El-Sayed M. El-Rabaie, Ashraf A. M. Khalaf   +3 more
doaj   +1 more source

Seroprevalence of caprine brucellosis in Karnataka [PDF]

Veterinary World, 2014
Aim: To study the seroprevalence of caprine bruellosis in Karnataka and compare the relative sensitivity and specificity among the different serological tests used.
D. Avinash Reddy, Gita Kumari, S. Rajagunalan, D. K. Singh, Ashok Kumar , P. Pavan Kumar   +5 more
doaj   +1 more source

Terahertz Women Reproductive Hormones Sensor Using Photonic Crystal Fiber With Behavior Prediction Using Machine Learning

IEEE Access, 2023
In this article, we propose a rectangular hollow core Photonic Crystal Fiber (PCF) sensor for high detection of women’s reproductive hormones (progesterone and estradiol) in the blood sample at THz regime (0.8 THz to 1.7 THz).
A. Naesha Nithish, Shobhit K. Patel, N. Ayyanar, Jaymit Surve, S. Rajaram, S. N. Deepa, Truong Khang Nguyen, Fahad Ahmed Al-Zahrani   +7 more
doaj   +1 more source

Absolute and Relative Measures of Instructional Sensitivity [PDF]

Journal of Educational and Behavioral Statistics, 2017
Valid inferences on teaching drawn from students’ test scores require that tests are sensitive to the instruction students received in class. Accordingly, measures of the test items’ instructional sensitivity provide empirical support for validity claims about inferences on instruction. In the present study, we first introduce the concepts of absolute
Naumann, Alexander, Hartig, Johannes, Hochweber, Jan   +2 more
openaire   +1 more source

Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

Applied Sciences, 2021
The measurement of glucose concentration finds interesting potential applications in both industry and biomedical contexts. Among the proposed solutions, the use of microwave planar resonant sensors has led to remarkable scientific activity during the ...
Carlos G. Juan, Benjamin Potelon, Cédric Quendo, Enrique Bronchalo   +3 more
doaj   +1 more source

Theoretical Considerations of Photonic Crystal Fiber with All Uniform-Sized Air Holes for Liquid Sensing

Photonics, 2021
A novel liquid-infiltrated photonic crystal fiber model applicable in liquid sensing for different test liquids—water, ethanol and benzene—has been proposed.
Abdul Mu’iz Maidi, Pg Emeroylarffion Abas, Pg Iskandar Petra, Shubi Kaijage, Nianyu Zou, Feroza Begum   +5 more
doaj   +1 more source

Phylogenetic signal in amphibian sensitivity to copper sulfate relative to experimental temperature [PDF]

, 2015
The release of large quantities of chemicals into the environment represents a major source of environmental disturbance. In recent years, the focus of ecotoxicology has shifted from describing the effects of chemical contaminants on individual species ...
Capellini, Isabella, Carretero, Miguel A., Chiari, Ylenia, Glaberman, Scott, Seren, Nina, Serén, Nina   +5 more
core   +1 more source