8 results on '"thermal indicators"'
Search Results
2. A Multi-purpose Mobile Robotic Platform with Measurement of Thermal Indicators of Objects and Remote Control
- Author
-
Oleksandr Dobrzhanskyi, Andriі Tkachuk, Anna Humeniuk, Martin Bohdanovskyi, Vasyl Bondarchuk, and Ilona Kryzhanivska
- Subjects
algorithm ,mobile platform ,optical sensors ,remote control ,robotics ,thermal indicators ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Here, we present research results on developing a compact multifunctional mobile robotic platform based on tracks. Nowadays, choosing the optimal control system for such equipment remains relevant. We have proposed a system that allows measuring thermal indicators of objects or other environmental parameters in hazardous areas and can be controlled remotely via video channels and a specially developed free-programmable console. We also suggest using a steerable two-axis camera gimbal on a moving platform to implement enhanced VR/AR/FPV technology for efficient robot control. It provides a new quality of operator immersion in control compared to common land-based mobile platforms. With this in mind, we have presented the main points related to the set of components and algorithms of the control system, which is installed directly on the moving platform, and the control system that ensures the operation of the operator panel.
- Published
- 2024
- Full Text
- View/download PDF
3. Optimal temperature and thermal tolerance of postlarvae of the freshwater prawn Cryphiops (Cryphiops) caementarius acclimated to different temperatures
- Author
-
Karla Ferrer-Chujutalli, José Sernaqué-Jacinto, and Walter Reyes-Avalos
- Subjects
Growth parameters ,Acclimation capacity ,Thermal safety margin ,Thermal tolerance interval ,Acclimation rate response ,Thermal indicators ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
In this study, the optimum temperature and thermal tolerance of postlarvae of the commercially important freshwater prawn Cryphiops (Cryphiops) caementarius were determined after acclimation to six different rearing temperatures (19 °C, 22 °C, 24 °C, 26 °C, 28 °C, and 30 °C) during a 45 day-culture period. Best growth parameter values were obtained within the temperature range of 24 °C to 28 °C, where the optimum temperature for growth was found to be at 26 °C (weight gain 81.70%; specific growth rate 1.33 %/day) but had not significant effect (p > 0.05) on survival (64%–71%) of postlarvae. Increasing the acclimation temperature significantly (p
- Published
- 2024
- Full Text
- View/download PDF
4. Integration of Visible and Thermal Imagery with an Artificial Neural Network Approach for Robust Forecasting of Canopy Water Content in Rice
- Author
-
Osama Elsherbiny, Lei Zhou, Lei Feng, and Zhengjun Qiu
- Subjects
canopy water content ,GLCM features ,color vegetation indices ,thermal indicators ,high-quality features ,ANN ,Science - Abstract
A total of 120 rice plant samples were scanned by visible and thermal proximal sensing systems under different water stress levels to evaluate the canopy water content (CWC). The oven-drying method was employed for assessing the canopy’s water state. This CWC is of great importance for irrigation management decisions. The proposed framework is to integrate visible and thermal imaging data using an artificial neural network as a valuable promising implement for accurately estimating the water content of the plant. The RGB-based features included 20 color vegetation indices (VI) and 6 gray level co-occurrence matrix-based texture features (GLCMF). The thermal imaging features were two thermal indicators (T), namely normalized relative canopy temperature (NRCT) and the crop water stress index (CWSI), that were deliberated by plant temperatures. These features were applied with a back-propagation neural network (BPNN) for training the samples with minimal loss on a cross-validation set. Model behavior was affected by filtering high-level features and optimizing hyperparameters of the model. The results indicated that feature-based modeling from both visible and thermal images achieved better performance than features from the individual visible or thermal image. The supreme prediction variables were 21 features: 14VI, 5GLCMF, and 2T. The fusion of color–texture–thermal features greatly improved the precision of water content evaluation (99.40%). Its determination coefficient (R2 = 0.983) was the most satisfied with an RMSE of 0.599. Overall, the methodology of this work can support decision makers and water managers to take effective and timely actions and achieve agricultural water sustainability.
- Published
- 2021
- Full Text
- View/download PDF
5. THERMODYNAMIC, THERMAL AND ELASTIC PROPERTIES OF TITANIUM NITRIDE TiN: COMPARISON OF VARIOUS DATA AND DETERMINATION OF THE MOST RELIABLE VALUES
- Author
-
Anton Kozma
- Subjects
heat capacity ,Materials science ,chemistry.chemical_element ,Thermodynamics ,mechanical parameters ,titanium nitride ,thermodynamic properties ,thermal indicators ,thermal expansion ,bulk modulus ,calculation methods ,02 engineering and technology ,010402 general chemistry ,lcsh:Technology ,01 natural sciences ,Heat capacity ,Thermal expansion ,symbols.namesake ,Debye model ,Debye ,Bulk modulus ,lcsh:T ,Isochoric process ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,chemistry ,symbols ,Isobaric process ,0210 nano-technology ,Tin - Abstract
The analysis of literary data on thermodynamic, thermal and elastic properties of titanium nitride TiN which included values Debye temperature θD, volume coefficient of thermal expansion αVand bulk modulusBunder standard conditions is carried out. It has been shown that the known data have a significant spread of values from 20 to 43%. The 8 most rational variants of optimizing calculations are proposed, which make it possible to reveal the most reliable values of some TiN parameters. At the same time, the minimum and maximum values of θDand αVwere used from literary sources, as well as the least contradictory data on isobaric heat capacityCp, melting temperatureTm.pand densitydof TiN. To improve the calculated results, the values of θD(TiN) determined using the methods of Magnus ‒ Lindeman and Debye were also used. The Mayer’s relation was the basic test expression. The obtained values of the bulk modulus were compared with the literature data. This made it possible to distinguish the least and most reliable values of αVand θD, as well as make a refinement correction for the last value. As a result, it was found that under standard conditions, the value of θD(TiN) close to the optimal should be within 746‒769K, and for its isochoric heat capacityCV‒ in the range 36.55‒37.19J/(mol×K). The range of values, after optimization, does not exceed 3%, unlike the 20% available in the literature. A more accurate definition of Debye temperature for TiN needs to radically refine the values of its αVandB
- Published
- 2020
6. ASSESSMENT OF CASEIN CONTENT IN MODEL SYSTEMS DURING HEAT TREATMENT.
- Author
-
Stănciuc, Nicoleta, Râpeanu, Gabriela, and tanciu, Silvius
- Subjects
HEAT treatment of milk ,MILK quality ,DENATURATION of proteins ,CASEINS ,TEMPERATURE effect ,DYNAMICS ,ACID-base chemistry ,PROTEIN-protein interactions - Abstract
Heat treatment affects the sensory, biophysical and nutritional properties of milk. To maintain and improve milk quality, an optimization of the heat treatment must be reached to ensure the microbiological safety of the product, while altering as little as possible its sensory and nutritional value. One of the major events occurring upon heating is protein denaturation. The rate of protein denaturation is governed by the immediate chemical environment of the reactants defined by the chemical composition of the system. The aim of the present work was to compare the kinetics of casein denaturation under different conditions, in order to define suitable markers to sensitively assess the degree of reaction in early stages accounting for the time/temperature effects. The results showed a clear dependence of protein denaturation on pH and calcium content, but temperature-time combination did not have a major impact on the extent of protein heat-induced changes. [ABSTRACT FROM AUTHOR]
- Published
- 2009
7. Integration of Visible and Thermal Imagery with an Artificial Neural Network Approach for Robust Forecasting of Canopy Water Content in Rice.
- Author
-
Elsherbiny, Osama, Zhou, Lei, Feng, Lei, Qiu, Zhengjun, and Hernández-Clemente, Rocio
- Subjects
- *
ARTIFICIAL neural networks , *WILD rice , *THERMOGRAPHY , *PLANT-water relationships , *IRRIGATION management - Abstract
A total of 120 rice plant samples were scanned by visible and thermal proximal sensing systems under different water stress levels to evaluate the canopy water content (CWC). The oven-drying method was employed for assessing the canopy's water state. This CWC is of great importance for irrigation management decisions. The proposed framework is to integrate visible and thermal imaging data using an artificial neural network as a valuable promising implement for accurately estimating the water content of the plant. The RGB-based features included 20 color vegetation indices (VI) and 6 gray level co-occurrence matrix-based texture features (GLCMF). The thermal imaging features were two thermal indicators (T), namely normalized relative canopy temperature (NRCT) and the crop water stress index (CWSI), that were deliberated by plant temperatures. These features were applied with a back-propagation neural network (BPNN) for training the samples with minimal loss on a cross-validation set. Model behavior was affected by filtering high-level features and optimizing hyperparameters of the model. The results indicated that feature-based modeling from both visible and thermal images achieved better performance than features from the individual visible or thermal image. The supreme prediction variables were 21 features: 14VI, 5GLCMF, and 2T. The fusion of color–texture–thermal features greatly improved the precision of water content evaluation (99.40%). Its determination coefficient (R2 = 0.983) was the most satisfied with an RMSE of 0.599. Overall, the methodology of this work can support decision makers and water managers to take effective and timely actions and achieve agricultural water sustainability. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
8. Study of products counterfeiting protection technologies on the Ukrainian pharmaceutical market
- Subjects
protection of drugs ,packaging ,promising areas ,counterfeiting ,General Medicine ,thermal indicators ,lcsh:Science (General) ,holographic technologies ,lcsh:Q1-390 - Abstract
Мета: Згідно з даними ВООЗ, в останні роки виробники контрафактних лікарських засобів досягли такої «майстерності», що їх продукцію складно відрізнити від оригінальної навіть фахівцям охорони здоров'я, а застосування таких препаратів може бути небезпечним для здоров’я та життя.Враховуючи, що фальсифікатори лікарських препаратів піддають небезпеці здоров’я людей, які, не отримуючи необхідного лікування, мають ризик втратити життя, захист лікарських засобів має важливе значення в боротьбі з підробками. Проблема фальсифікованих медикаментів є досить актуальною для України. Відомо, що на полицях вітчизняних аптек знаходиться більше 20 % підроблених лікарських препаратів. Особливо гострою стає проблема в періоди епідемій (наприклад, сезонних захворювань). Фальсифіковані ліки можуть являти собою пряму небезпеку здоров’ю та життю пацієнта, якщо до складу введені неякісні інгредієнти, або опосередковану для тих людей, які приймають пустушки, не отримуючи очікуваного ефекту.Методи: З’ясування значення упаковок і етикеток для споживача, застосування термоіндикаторів для контролю умов транспортування та зберігання препаратів.Результати дослідження: Найпоширенішим захистом від підробок є голограми, які передбачені оригінал-макетом упаковки, розробленим офіційним виробником. Що стосується спеціальних методів захисту, спеціалісти в майбутньому пропонують захистити упаковки мікронаклейками, радіомітками, спеціальними фарбами, тощо. Україна отримує додаткові напрямки в боротьбі з неякісними та фальсифікованими ліками у вигляді доступу до бази даних фармацевтичних інспекцій провідних країн світу, але і на сьогоднішній день у світі немає 100 % захисту від підробок.Висновки: У статті розкрито значення етикеток та упаковок для споживача; наведено види підробок, що існують на фармацевтичному ринку; відображено результати дослідження технології захисту виробів від підробок та застосування голограм на упаковках фармацевтичної продукції; проведено порівняння фальсифікованого препарату «Но-шпа» з оригінальним; наведено статистику лікарських препаратів, що найчастіше піддаються фальсифікації; вивчено зарубіжні методи захисту лікарських препаратів; обґрунтовано застосування термоіндикаторів для контролю умов транспортування та зберігання препаратів
- Published
- 2015
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.