Modification of commercial electronic automatic potentiometer �PP-09 for measurement of relative temperature

1970 ◽  
Vol 13 (3) ◽  
pp. 418-419
Author(s):  
V. A. Tumanov ◽  
V. N. Zharkov ◽  
V. V. Arkhipov
Keyword(s):  
Relative Temperature ◽  
Automatic Potentiometer ◽  
Electronic Automatic Potentiometer

scholarly journals Convolutional Neural Networks for Semantic Segmentation as a Tool for Multiclass Face Analysis in Thermal Infrared

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
David Müller ◽  
Andreas Ehlen ◽  
Bernd Valeske
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Semantic Segmentation ◽  
Thermal Infrared ◽  
Relative Temperature ◽  
Face Analysis ◽  
Image Translation ◽  
The Face ◽  
Live Image ◽  
Quantitative Thermography

AbstractConvolutional neural networks were used for multiclass segmentation in thermal infrared face analysis. The principle is based on existing image-to-image translation approaches, where each pixel in an image is assigned to a class label. We show that established networks architectures can be trained for the task of multiclass face analysis in thermal infrared. Created class annotations consisted of pixel-accurate locations of different face classes. Subsequently, the trained network can segment an acquired unknown infrared face image into the defined classes. Furthermore, face classification in live image acquisition is shown, in order to be able to display the relative temperature in real-time from the learned areas. This allows a pixel-accurate temperature face analysis e.g. for infection detection like Covid-19. At the same time our approach offers the advantage of concentrating on the relevant areas of the face. Areas of the face irrelevant for the relative temperature calculation or accessories such as glasses, masks and jewelry are not considered. A custom database was created to train the network. The results were quantitatively evaluated with the intersection over union (IoU) metric. The methodology shown can be transferred to similar problems for more quantitative thermography tasks like in materials characterization or quality control in production.

Relative Temperature Maximum in Wound Infection and Inflammation as Compared with a Control Subject Using Long-Wave Infrared Thermography

2017 ◽  
Vol 30 (9) ◽  
pp. 406-414 ◽  
Author(s):  
Arjun Chanmugam ◽  
Diane Langemo ◽  
Korissa Thomason ◽  
Jaimee Haan ◽  
Elizabeth A. Altenburger ◽  
...  
Keyword(s):  
Wound Infection ◽  
Control Subject ◽  
Infrared Thermography ◽  
Relative Temperature ◽  
Long Wave ◽  
Infection And Inflammation ◽  
Long Wave Infrared

scholarly journals Computational Fluid Dynamics of Roof Top using PCM for Efficient Thermal Management

2019 ◽  
Vol 9 (2) ◽  
pp. 4926-4929
Keyword(s):  
Fluid Dynamics ◽  
Energy Storage ◽  
Thermal Management ◽  
Double Layer ◽  
Phase Change Materials ◽  
Concrete Slab ◽  
Single Layer ◽  
Heat Energy ◽  
Relative Temperature ◽  
Roof Panel

This paper presents a simulated parametric study to investigate the thermal management of the roof panel using phase change materials (PCM). The warmth engrossing and expelling ability of PCM is utilized to regulate the warmth produced in the room. A single and double layer of the PCM was kept between the roof and concrete. The energy saving level has noted on particular time without PCM materials, the same method as performed with single layer PCM and double layer PCM. Along these lines, it's exceedingly important to improve the warm presentation, so as to accomplish the objective of vitality sparing. So the Thermal Energy Storage (TES) is perhaps the most ideal approaches to improve thermal execution of building. The major classifications of the heat energy storage are practical and dormant. This paper is focused on one point such as PCM materials with to reduce the heat generated inside the room. CFD is seen as a superior substitute in present day ventures and has the capacity of taking care of such difficult issues. From the assistance of CFD, relative examinations are produced to consider the accompanying cases, for example, Case 1: Concrete piece with rooftop top section off without PCM. Case 2: Concrete slab with roof top slab off with single layer PCM. Case 3: Concrete slab with roof top slab off with Double layer PCM. The relative temperature design inside the room is utilized to comprehend the warm solace in the room and the upsides of utilizing PCM.

scholarly journals Nested Recharge Systems in Mountain Block Hydrology: High-Elevation Snowpack Generates Low-Elevation Overwinter Baseflow in a Rocky Mountain River

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2249
Author(s):  
Éowyn M. S. Campbell ◽  
M. Cathryn Ryan
Keyword(s):  
Rocky Mountain ◽  
High Elevation ◽  
Third Order ◽  
Relative Temperature ◽  
Local Flow ◽  
Fracture Systems ◽  
Lower Elevation ◽  
Flow Systems ◽  
Longitudinal Sampling

The majority of each year′s overwinter baseflow (i.e., winter streamflow) in a third-order eastern slopes tributary is generated from annual melting of high-elevation snowpack which is transmitted through carbonate and siliciclastic aquifers. The Little Elbow River and its tributaries drain a bedrock system formed by repeated thrust faults that express as the same siliciclastic and carbonate aquifers in repeating outcrops. Longitudinal sampling over an 18 km reach was conducted at the beginning of the overwinter baseflow season to assess streamflow provenance. Baseflow contributions from each of the two primary aquifer types were apportioned using sulfate, δ34SSO4, and silica concentrations, while δ18OH2O composition was used to evaluate relative temperature and/or elevation of the original precipitation. Baseflow in the upper reaches of the Little Elbow was generated from lower-elevation and/or warmer precipitation primarily stored in siliciclastic units. Counterintuitively, baseflow generated in the lower-elevation reaches originated from higher-elevation and/or colder precipitation stored in carbonate units. These findings illustrate the role of nested flow systems in mountain block recharge: higher-elevation snowmelt infiltrates through fracture systems in the cliff-forming—often higher-elevation—carbonates, moving to the lower-elevation valley through intermediate flow systems, while winter baseflow in local flow systems in the siliciclastic valleys reflects more influence from warmer precipitation. The relatively fast climatic warming of higher elevations may alter snowmelt timing, leaving winter water supply vulnerable to climatic change.

scholarly journals Multinuclear absolute magnetic resonance thermometry

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Emilia V. Silletta ◽  
Alexej Jerschow ◽  
Guillaume Madelin ◽  
Leeor Alon
Keyword(s):  
Magnetic Resonance ◽  
Ex Vivo ◽  
Absolute Temperature ◽  
Main Magnetic Field ◽  
Relative Temperature ◽  
Temperature Changes ◽  
Non Invasive ◽  
Mouse Tissues ◽  
Infrared Measurements

AbstractNon-invasive measurement of absolute temperature is important for proper characterization of various pathologies and for evaluation of thermal dose during interventional procedures. The proton (hydrogen nucleus) magnetic resonance (MR) frequency shift method can be used to map relative temperature changes. However, spatiotemporal variations in the main magnetic field and the lack of local internal frequency reference challenge the determination of absolute temperature. Here, we introduce a multinuclear method for absolute MR thermometry, based on the fact that the hydrogen and sodium nuclei exhibit a unique and distinct characteristic frequency dependence with temperature and with electrolyte concentration. A one-to-one mapping between the precession frequency difference of the two nuclei and absolute temperature is demonstrated. Proof-of-concept experiments were conducted in aqueous solutions with different NaCl concentrations, in agarose gel samples, and in freshly excised ex vivo mouse tissues. One-dimensional chemical shift imaging experiments also demonstrated excellent agreement with infrared measurements.

scholarly journals Post-operative monitoring of free flaps using a low-cost thermal camera: a pilot study

2020 ◽  
Vol 43 (5) ◽  
pp. 589-596 ◽  
Author(s):  
S. Hummelink ◽  
A. S. Kruit ◽  
A. R. W. van Vlaenderen ◽  
M. J. M. Schreinemachers ◽  
W. Steenbergen ◽  
...  
Keyword(s):  
Free Flaps ◽  
Fluorescence Angiography ◽  
Diagnostic Study ◽  
Thermal Camera ◽  
Level Of Evidence ◽  
Relative Temperature ◽  
Indocyanine Green Fluorescence ◽  
Flap Failure ◽  
Free Flap Monitoring ◽  
Operative Monitoring

Abstract Background Careful post-operative monitoring of free flaps is important in flap survival; immediate action increases flap salvage rate. Although various methods are available, room for improvement remains. Thermal cameras have proven their value in medicine and are nowadays readily available at low costs. The objective of this study was to evaluate the potential of an affordable infrared thermal camera and software in the detection of failing free flaps during post-operative monitoring. Methods Free myocutaneous rectus abdominis flaps were harvested in 16 female landrace pigs and replanted after several hours of storage. All flaps were assessed with indocyanine green fluorescence angiography as well as hourly clinical assessment of skin colour, turgor and capillary refill. Furthermore, thermal photographs were taken simultaneously with the FLIR One thermal camera smartphone module. These photographs were processed in MATLAB and evaluated on their additional value as an indicator for flap failure. Results Out of 16 flaps, three flaps failed due to arterial failure and one flap developed venous congestion. The mean flap temperature compared to adjacent control skin proved to be most indicative for flap failure. All unsuccessful flaps showed lower temperatures after failure compared to the uncompromised free flaps. Conclusions An affordable thermal camera module can potentially contribute to post-operative free flap monitoring. Vascular compromise in free flaps can be distinguished by investigating relative temperature differences between the flap and reference skin. Until the FLIR One camera has been extensively investigated in a human population, it should be used in conjunction with conventional monitoring techniques. Level of evidence: Level IV, diagnostic study

scholarly journals Clinical Trial on the Characteristics of Zheng Classification of Pulmonary Diseases Based on Infrared Thermal Imaging Technology

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Jin-xia Ni ◽  
Si-hua Gao ◽  
Yu-hang Li ◽  
Shi-lei Ma ◽  
Tian Tian ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Pulmonary Disease ◽  
Thermal Imaging ◽  
Relative Temperature ◽  
Infrared Thermal Imaging ◽  
Imaging Technology ◽  
Thermal Images ◽  
Diagnosis Rate ◽  
Infrared Thermal Images

Zheng classification study based on infrared thermal imaging technology has not been reported before. To detect the relative temperature of viscera and bowels of different syndromes patients with pulmonary disease and to summarize the characteristics of different Zheng classifications, the infrared thermal imaging technology was used in the clinical trial. The results showed that the infrared thermal images characteristics of different Zheng classifications of pulmonary disease were distinctly different. The influence on viscera and bowels was deeper in phlegm-heat obstructing lung syndrome group than in cold-phlegm obstructing lung syndrome group. It is helpful to diagnose Zheng classification and to improve the diagnosis rate by analyzing the infrared thermal images of patients. The application of infrared thermal imaging technology provided objective measures for medical diagnosis and treatment in the field of Zheng studies and provided a new methodology for Zheng classification.

CONVERGENCE TO EQUILIBRIUM FOR A PARABOLIC–HYPERBOLIC PHASE-FIELD SYSTEM WITH NEUMANN BOUNDARY CONDITIONS

2007 ◽  
Vol 17 (01) ◽  
pp. 125-153 ◽  
Author(s):  
HAO WU ◽  
MAURIZIO GRASSELLI ◽  
SONGMU ZHENG
Keyword(s):  
Boundary Conditions ◽  
Type Inequality ◽  
Global Solutions ◽  
Neumann Boundary ◽  
Coupled System ◽  
Neumann Boundary Conditions ◽  
Convergence To Equilibrium ◽  
Relative Temperature ◽  
Real Analytic Functions ◽  
Phase Field System

This paper is concerned with the asymptotic behavior of global solutions to a parabolic–hyperbolic coupled system which describes the evolution of the relative temperature θ and the order parameter χ in a material subject to phase transitions. For the system with homogeneous Neumann boundary conditions for both ¸ and χ, under the assumption that the nonlinearities λ and ϕ are real analytic functions, we prove the convergence of a global solution to an equilibrium as time goes to infinity by means of a suitable Łojasiewicz–Simon type inequality.

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