scholarly journals On the Effects of Balun on Small Antennas Performance for Animal Health- Monitoring and Tracking

2021 ◽  
Vol 10 (2) ◽  
pp. 39-43
Author(s):  
A. Alemaryeen ◽  
S. Noghanian
Keyword(s):  
Health Monitoring ◽  
Free Space ◽  
Animal Health ◽  
Antenna Design ◽  
Impedance Match ◽  
Wildlife Health ◽  
Small Antennas ◽  
Flexible Loop ◽  
Measurement Results ◽  
Bandwidth Characteristic

This paper presents the performance evaluation of a sleeve Balun integration in the design of a flexible loop antenna for wildlife health monitoring and tracking applications. To verify the design concept, an experimental antenna is designed, fabricated, and measured in free-space and muscle mimicking phantom. Moreover, investigations are carried out for wearable and implanted antennas in planar and conformal arrangements. In free-space, the antenna is operating within the industrial, scientific, and medical ISM 5.8 GHz band. Balun integration in the antenna design efficiently chokes the currents excited on the outer surface of the feeding cable and provides a good impedance match between antenna and feed line, as demonstrated by simulation and measurement results. On the other hand, in phantom, the antenna has a wide bandwidth characteristic that covers the most used frequency bands for in-body devices. Balun integration, in this case, showed a negligible effect on antenna’s matching properties for two studied implantation depths; 2.5 cm and 5 cm.  The proposed study offers a promising guideline in the design and realization of wearable and implanted antennas.

California National Animal Health Monitoring System for Meat Turkey Flocks: 1988-89 Pilot Study: Management Practices, Flock Health, and Production

1996 ◽  
Vol 40 (2) ◽  
pp. 278 ◽  
Author(s):  
Kathryn H. Christiansen ◽  
David W. Hird ◽  
Kurt P. Snipes ◽  
Cyrus Danaye-Elmi ◽  
Charles W. Palmer ◽  
...  
Keyword(s):  
Pilot Study ◽  
Monitoring System ◽  
Health Monitoring ◽  
Management Practices ◽  
Animal Health ◽  
Health Monitoring System ◽  
Study Management

The national animal health monitoring system in Colorado beef herds: Disease rates and their associated costs

1990 ◽  
Vol 8 (2-3) ◽  
pp. 203-214 ◽  
Author(s):  
M.D. Salman ◽  
M.E. King ◽  
T.E. Wittum ◽  
C.R. Curtis ◽  
K.G. Odde ◽  
...  
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Animal Health ◽  
Health Monitoring System ◽  
Disease Rates ◽  
Beef Herds

scholarly journals Spherical Helices for Resonant Wireless Power Transfer

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Maja Škiljo ◽  
Zoran Blažević
Keyword(s):  
Radiation Resistance ◽  
Power Transmission ◽  
Wireless Power Transfer ◽  
Antenna Design ◽  
Impedance Match ◽  
Wireless Power ◽  
Radiation Characteristics ◽  
Antenna Size ◽  
Helical Antennas ◽  
Theoretical Considerations

The capabilities of electrically small spherical helical antennas for wireless power transmission at small and moderate distances are analyzed. Influence of design on antenna radiation resistance, efficiency, and mode ratio is examined. These are the factors that, according to the theoretical considerations depicted herein, govern the maximum transfer performances. Various designs and configurations are considered for the purpose, with accent on small-size receivers suitable for implementation in powering common-sized gadgets. It is shown that spherical helix design is easily manipulated to achieve a reduced antenna size. Good radiation characteristics and impedance match are maintained by multiple-arm folded antenna design and by adjusting the separation between the arms.

scholarly journals The Concept of Geodetic Analyses of the Measurement Results Obtained by Hydrostatic Leveling

Geosciences ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 406
Author(s):  
Kamiński ◽  
Makowska
Keyword(s):  
Structural Health Monitoring ◽  
Kalman Filtering ◽  
Health Monitoring ◽  
Systematic Errors ◽  
Monitoring Systems ◽  
Measurement Results ◽  
Vertical Displacements ◽  
Complete Computation ◽  
Computation Scheme ◽  
Health Monitoring Systems

The article discusses the issue of hydrostatic leveling. Its application is presented in structural health monitoring systems in order to determine vertical displacements of controlled points. Moreover, the article includes a complete computation scheme that utilizes the estimation from observation differences, allowing the elimination of the influence of individual sensors’ systematic errors. The authors suggest two concepts of processing the measurement results depending on the sensors’ connection method. Additionally, the second concept is extended by the elements allowing the prediction of the displacements by means of Kalman filtering.

scholarly journals Health monitoring program for the control of laboratory animal diseases

2020 ◽  
Author(s):  
Chiara Romano ◽  
Andrea Cacciamali ◽  
Silvia Dotti ◽  
Riccardo Villa
Keyword(s):  
Health Monitoring ◽  
Control Strategies ◽  
Animal Health ◽  
Monitoring Program ◽  
Laboratory Animals ◽  
Surveillance Program ◽  
Health State ◽  
Preliminary Study ◽  
Sanitary Conditions ◽  
3Rs Principle

Pathogens present in the environment are the biggest source of diseases and epidemics in the breeding of laboratory animals. In fact, the presence of microorganisms can critically influence the animal health status and, consequently, the validity and reproducibility of experimental data. In accordance with the 3Rs principle (Refinement, Reduction, Replacement), this study is part of the Refinement concept. The FELASA guidelines, formulated with the aim of guaranteeing the best animal health state, are a valid support for researchers. In this preliminary study, health-monitoring program was carried out within the breeding of laboratory animals in IZSLER facility. The main murine viruses were analyzed through molecular biology techniques (PCR, RT-PCR) and enzyme immunoassays (indirect ELISA). The established surveillance program steadily guarantees animal health and ensures the most controlled environmental and sanitary conditions. Further investigations will be needed to develop virus control strategies.

Isolation and Characterization of Yersinia enterocolitica from Swine Feces Recovered during the National Animal Health Monitoring System Swine 2000 Study†

2006 ◽  
Vol 69 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
SAUMYA BHADURI ◽  
IRENE WESLEY
Keyword(s):  
Yersinia Enterocolitica ◽  
Health Monitoring ◽  
Animal Health ◽  
The United States ◽  
National Study ◽  
Virulence Plasmid ◽  
Fecal Samples ◽  
Serotype O ◽  
Isolation And Characterization ◽  
Swine Operations

A national study was conducted for the isolation of pathogenic Yersinia enterocolitica in pig feces in the United States as part of the National Animal Health Monitoring System's Swine 2000 study. Fecal samples collected from swine operations from September 2000 to March 2001 from 77 production sites in 15 of the top 17 swine-producing states were tested for the presence of pathogenic Y. enterocolitica. After enrichment of swine fecal samples in irgasan–ticarcillin–potassium chlorate broth, the enriched cultures were plated on cefsulodin-irgasan-novobiocin agar for isolation of presumptive Y. enterocolitica. The isolates were confirmed as pathogenic Y. enterocolitica by the fluorogenic 5′ nuclease PCR assay targeting the chromosomal attachment invasion ail gene. Of 2,793 fecal samples tested, 106 (3.80%) ail-positive strains of Y. enterocolitica were isolated. These 106 ail-positive isolates originated from 7 of the 15 participating states. The predominant serotype O:3 (n = 79 of 106) was distributed in five states (n = 5 of 7). Serotype O:5 (n = 27 of 106) was also found in five states (n = 5 of 7). All isolates contained the virulence plasmid and expressed virulence-associated phenotypic characteristics. These results indicate that swine in the United Stares harbor Y. enterocolitica that can potentially cause human illness.

A flexible wide band single fed slot antenna with circular polarizing rotated elliptical ground and impulse response

2019 ◽  
Vol 11 (9) ◽  
pp. 872-884 ◽  
Author(s):  
Sherif R. Zahran ◽  
Mahmoud A. Abdalla ◽  
Abdelhamid Gaafar
Keyword(s):  
Liquid Crystalline ◽  
Axial Ratio ◽  
Wide Band ◽  
Crystalline Polymer ◽  
Antenna Design ◽  
Slot Antenna ◽  
Efficient Design ◽  
Measurement Results ◽  
Highly Correlated ◽  
Good Agreement

AbstractIn this paper, a flexible single fed planar circular polarized slot antenna is proposed for Internet of Things wideband applications. The antenna flexibility is achieved by employing a mechanically bendable liquid crystalline polymer substrate. The overall antenna volume is 50 mm × 42 mm × 0.1 mm. The antenna design uses 45° rotated elliptical ground structure for generating circular polarized radiation over wideband spectrum. Two parametrical analyses targeting the slot ground are introduced in order to achieve the most efficient design. The final antenna design demonstrates a good matching in terms of reflection coefficient (<−10 dB), semi-omnidirectional radiation patterns, average gain of 4 dB, and <3 dB axial ratio over entire frequency band of operation. All antenna parameters are studied in both straight and bent antenna setup scenarios. Good agreement between simulation and measurement results of the antenna parameters are achieved. For both straight and bent antenna scenarios, the antenna receiving functionality in time domain is confirmed by retrieving highly correlated impulse responses.

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