Adipose tissue estimation of foraging and nesting green turtles Chelonia mydas using bioelectrical impedance analysis DOI Creative Commons

S Kophamel,

Leigh C. Ward,

D Mendez

и другие.

Endangered Species Research, Год журнала: 2023, Номер 51, С. 127 - 142

Опубликована: Апрель 21, 2023

Adipose tissue is the main energy store in sea turtles and fluctuates response to dietary conditions external stressors. Monitoring programmes commonly use body condition indices (BCIs) infer nutritional health status of turtle populations. However, BCIs have poor predictive power for estimating adipose tissue. We introduce bioelectrical impedance analysis (BIA) as a portable technique estimate green Chelonia mydas . The aims this study were on Great Barrier Reef (Australia), examine whether more sensitive indicator than BCI. Turtles (n = 250) sampled at 3 foraging sites nesting beach with differing levels anthropogenic impact. Differences tissue, Fulton’s BCI, mass across life stages assessed by conducting linear mixed effects models. BIA estimates mean revealed significant differences sampling sites, that not found using BCI data. Mean was estimated be 4.6 ± 0.6% (% SD) correlated (1.2 0.1). reduced high level Adult had significantly higher values juveniles subadults. females measured during shortly before season highest (%). practical method we recommend consideration monitoring programmes.

Язык: Английский

Thrombus detection in the artificial heart pump based on electrical impedance spectroscopy DOI
Jianping Li,

Yutong Ming,

Jianming Wen

и другие.

IEEE Sensors Journal, Год журнала: 2024, Номер 24(11), С. 18372 - 18381

Опубликована: Апрель 18, 2024

Heart disease is one of the major diseases threatening people's lives and health. The development artificial heart pumps has eased shortage transplanted hearts. However, natural formation thrombus in deeply limits its further development. How to precisely detect been an urgent research. This study focuses on high incidence VADs, or ventricular assist devices, potential dangers that arise from thrombus, including harm human body. employs pump as a model investigate impact variables such thickness, area, blood concentration, sedimentation time flow through pump. By analyzing this data, we aim prevent pipeline blockages impeller rotation obstructions caused by formation. Results showed impedance increased 11.6379 Ω 14.4971 thickness 0 mm 8 mm. diameters annular were 40.47 mm, 50.38 60.76 respectively, electrical values 15.4150 Ω, 15.9288 16.4748 Ω. concentration 22% 58%, value 29.3137 90.0740 After 20 minutes sedimentation, 37.3680 37.6949 with increase time.In case, contains area are linearly related resistance. Experimental results good agreement simulation results. research presents detection method based spectroscopy, which holds significant importance practical application realm preventing for

Язык: Английский

Процитировано

1

Field‐based adipose tissue quantification in sea turtles using bioelectrical impedance spectroscopy validated with CT scans and deep learning DOI
Sara Kophamel, Leigh C. Ward, Dmitry A. Konovalov

и другие.

Ecology and Evolution, Год журнала: 2022, Номер 12(12)

Опубликована: Дек. 1, 2022

Loss of adipose tissue in vertebrate wildlife species is indicative decreased nutritional and health status linked to environmental stress diseases. Body condition indices (BCI) are commonly used ecological studies estimate mass across populations. However, these have poor predictive power, which poses the need for quantitative methods improved population assessments. Here, we calibrate bioelectrical impedance spectroscopy (BIS) as an alternative approach assessing studies. BIS a portable technology that can body composition from measurements widely humans. technique requires calibration using reference method. Using sea turtles model organisms, propose protocol computed tomography (CT) scans, with prediction equation being: (kg) = - (-0.03 [intercept] 0.29 * length

Язык: Английский

Процитировано

4

Towards Tomato Plant Iron Stress Monitoring Through Bioimpedance and Circuit Analysis DOI
Saleh Hamed, Pietro Ibba, Antonio Altana

и другие.

Опубликована: Сен. 25, 2023

Insufficient availability of essential nutrients, such as iron, can impede plant growth, decrease crop productivity, and even lead to mortality. This is why it crucial detect early signs stress prevent yield loss, via proximal monitoring techniques. In this study, stem impedance 8 tomato plants was measured each 1 hour monitor the impact iron stress. The normalized magnitude at 10 kHz continuously over 38 days. results reveal a noticeable divergence in trend shortly after elimination from nutrient solution, indicating effect on bioimpedance. Additionally, Cole model employed evaluate electrical parameters spectra. fitting exhibited an average root mean square error 466.3 Ω. Statistical analysis extracted circuit revealed significant differences between iron-stressed control plants, highlighting their potential relevant features for discriminating health conditions. Our findings highlight usefulness measurements provide insights into physiological responses deprivation.

Язык: Английский

Процитировано

2

Adipose tissue estimation of foraging and nesting green turtles Chelonia mydas using bioelectrical impedance analysis DOI Creative Commons

S Kophamel,

Leigh C. Ward,

D Mendez

и другие.

Endangered Species Research, Год журнала: 2023, Номер 51, С. 127 - 142

Опубликована: Апрель 21, 2023

Adipose tissue is the main energy store in sea turtles and fluctuates response to dietary conditions external stressors. Monitoring programmes commonly use body condition indices (BCIs) infer nutritional health status of turtle populations. However, BCIs have poor predictive power for estimating adipose tissue. We introduce bioelectrical impedance analysis (BIA) as a portable technique estimate green Chelonia mydas . The aims this study were on Great Barrier Reef (Australia), examine whether more sensitive indicator than BCI. Turtles (n = 250) sampled at 3 foraging sites nesting beach with differing levels anthropogenic impact. Differences tissue, Fulton’s BCI, mass across life stages assessed by conducting linear mixed effects models. BIA estimates mean revealed significant differences sampling sites, that not found using BCI data. Mean was estimated be 4.6 ± 0.6% (% SD) correlated (1.2 0.1). reduced high level Adult had significantly higher values juveniles subadults. females measured during shortly before season highest (%). practical method we recommend consideration monitoring programmes.

Язык: Английский

Процитировано

0