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https://www.readbyqxmd.com/read/27913332/a-method-for-accurate-modeling-of-baw-filters-at-high-power-levels
#1
Andreas Tag, Vikrant Chauhan, Christian Huck, Bernhard Bader, Dominik Karolewski, F Maximilian Pitschi, Robert Weigel, Amelie Hagelauer
A novel approach for multiphysics modeling of bulk acoustic wave (BAW) filters is presented allowing accurate and at the same time efficient modeling of BAW filters at high power levels. The approach takes the different types of losses and their spatial distribution into account in order to provide the required input for thermal simulation. The temperature distribution determined by thermal simulation is used to modify the geometry and the layer stack of each single resonator of the filter. In this way, the required input for modeling of electromagnetic (EM) and acoustic behavior at high power level is generated...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27876238/thermography-examination-of-abdominal-area-skin-temperatures-in-individuals-with-and-without-focal-onset-epilepsy
#2
Hollis H King, Charles Thomas Cayce, Jeph Herrin
: Early osteopathic theory and practice, and the work of the medical intuitive Edgar Cayce suggested that the abdominal areas of individuals with epilepsy would manifest "cold spots." The etiology for this phenomenon was thought to be abdominal adhesions caused by inflammation and viscero-somatic reflexes caused by adhesions or injury to visceral or musculoskeletal system structures. Indeed, until that advent of electroencephalography in the 1930s, medical practice regarding epilepsy focused on abdominal neural and visceral structures...
October 21, 2016: Explore: the Journal of Science and Healing
https://www.readbyqxmd.com/read/27859195/energetic-costs-of-mange-in-wolves-estimated-from-infrared-thermography
#3
P C Cross, E S Almberg, C G Haase, P J Hudson, S K Maloney, M C Metz, A J Munn, P Nugent, O Putzeys, D R Stahler, A C Stewart, D W Smith
Parasites, by definition, extract energy from their hosts and thus affect trophic and food web dynamics even when the parasite may have limited effects on host population size. We studied the energetic costs of mange (Sarcoptes scabiei) in wolves (Canis lupus) using thermal cameras to estimate heat losses associated with compromised insulation during the winter. We combined the field data of known, naturally infected wolves with a data set on captive wolves with shaved patches of fur as a positive control to simulate mange-induced hair loss...
August 2016: Ecology
https://www.readbyqxmd.com/read/27847416/infrared-thermography-a-potential-noninvasive-tool-to-monitor-udder-health-status-in-dairy-cows
#4
REVIEW
M Sathiyabarathi, S Jeyakumar, A Manimaran, G Jayaprakash, Heartwin A Pushpadass, M Sivaram, K P Ramesha, D N Das, Mukund A Kataktalware, M Arul Prakash, R Dhinesh Kumar
The animal husbandry and livestock sectors play a major role in the rural economy, especially for the small and marginal farmers. India has the largest livestock population in the world and ranks first in the milk production. Mastitis is the most common and expensive infectious disease in dairy cattle. The global economic losses per year due to mastitis amounts to USD 35 billion and for Indian dairy industry ₹6000 crores per year. Early detection of mastitis is very important to reduce the economic loss to the dairy farmers and dairy industry...
October 2016: Veterinary World
https://www.readbyqxmd.com/read/27817990/infrared-thermography-in-the-evaluation-of-meibomian-gland-dysfunction
#5
Tai-Yuan Su, Wei-Ting Ho, Shu-Chiung Chiang, Chien-Yi Lu, Huihua Kenny Chiang, Shu-Wen Chang
BACKGROUND/PURPOSE: To evaluate meibomian gland dysfunction (MGD) by infrared thermography. METHODS: An observational study was conducted at the Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City, Taiwan. Participants included 89 MGD patients (30 in Grade 1, 49 in Grade 2, and 10 in Grade 3) and 65 controls. The close-eye thermographic images of the eyelid were obtained noninvasively by infrared thermography. Temperatures at 8 regions of interest (ROIs) of the eyelid margin and a reference temperature at the center of the upper eyelid were measured...
November 3, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/27804981/non-invasive-transient-determination-of-the-core-temperature-of-a-heat-generating-solid-body
#6
Dean Anthony, Daipayan Sarkar, Ankur Jain
While temperature on the surface of a heat-generating solid body can be easily measured using a variety of methods, very few techniques exist for non-invasively measuring the temperature inside the solid body as a function of time. Measurement of internal temperature is very desirable since measurement of just the surface temperature gives no indication of temperature inside the body, and system performance and safety is governed primarily by the highest temperature, encountered usually at the core of the body...
November 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27793235/infrared-image-monitoring-of-local-anesthetic-poisoning-in-rats
#7
Angelo Manoel G Carstens, Elizabeth Milla Tambara, Daniel Colman, Márcio G Carstens, Jorge Eduardo Fouto Matias
BACKGROUND AND OBJECTIVES: To evaluate the thermographic predictive value of local anesthetic poisoning in rats that indicates the early recognition of thermal signs of intoxication and enable the immediate start of advanced life support. METHODS: Wistar rats underwent intraperitoneal injection of saline and ropivacaine; they were allocated into pairs, and experiments performed at baseline and experimental times. For thermography, central and peripheral compartment were analyzed, checking the maximum and average differences of temperatures between groups...
November 2016: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/27785362/low-intensity-pulsed-ultrasound-stimulation-in-different-regions-in-the-viability-of-myocutaneous-flaps
#8
Fernanda Luiza de Almeida Albuquerque, Lais Mara Siqueira das Neves, Elaine Caldeira de Oliveira Guirro
BACKGROUND: Low-intensity pulsed ultrasound (LIPUS) has presented good results in the healing of chronic wounds. The objective of this study was to compare the effect of LIPUS on the viability of transverse rectus abdominal muscle (TRAM) flap in different regions (central and epigastric) in rats. METHODS: Twenty-one Wistar male rats were homogeneously distributed into three groups as follows: group 1 (control), animals submitted to surgery only; group 2, animals submitted to surgery and application of LIPUS at the center of the flap; and group 3, animals submitted to surgery and application of LIPUS at the flap area corresponding to the right inferior epigastric artery pedicle...
2016: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/27780820/activation-of-%C3%AE-3-adrenoceptors-increases-in-vivo-free-fatty-acid-uptake-and-utilization-in-brown-but-not-white-fat-depots-in-high-fat-fed-rats
#9
Amy Warner, Ann Kjellstedt, Alba Carreras, Gerhard Böttcher, Xiao-Rong Peng, Patrick Seale, Nicholas Oakes, Daniel Lindén
Activation of brown adipose tissue (BAT) and browning of white adipose tissue (WAT) present potential new therapies for obesity and type 2 diabetes. Here, we examined the effects of β3-adrenergic stimulation on tissue-specific uptake and storage of free fatty acids (FFA) and its implications for whole body FFA metabolism in diet-induced obese rats using a multi-radiotracer technique. Male Wistar rats were high fat-fed for 12 wk and administered β3-agonist CL316,243 (CL, 1 mg·kg(-1)·day(-1)) or saline via osmotic minipumps during the last 3 wk...
December 1, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27778207/estimation-of-breathing-rate-in-thermal-imaging-videos-a-pilot-study-on-healthy-human-subjects
#10
Carina Barbosa Pereira, Xinchi Yu, Michael Czaplik, Vladimir Blazek, Boudewijn Venema, Steffen Leonhardt
Diverse studies have demonstrated the importance of monitoring breathing rate (BR). Commonly, changes in BR are one of the earliest and major markers of serious complications/illness. However, it is frequently neglected due to limitations of clinically established measurement techniques, which require attachment of sensors. The employment of adhesive pads or thoracic belts in preterm infants as well as in traumatized or burned patients is an additional paramount issue. The present paper proposes a new robust approach, based on data fusion, to remotely monitor BR using infrared thermography (IRT)...
October 24, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27768578/a-prospective-observational-study-to-assess-the-use-of-thermography-to-predict-progression-of-discolored-intact-skin-to-necrosis-among-patients-in-skilled-nursing-facilities
#11
Jill Cox, Loretta Kaes, Miguel Martinez, Daniel Moles
Skin temperature may help prospectively determine whether an area of skin discoloration will evolve into necrosis. A prospective, observational study was conducted in 7 skilled nursing facilities to determine if skin temperature measured using infrared thermography could predict the progression of discolored intact skin (blanchable erythema, Stage 1 pressure ulcer, or sus- pected deep tissue injury [sDTI]) to necrosis and to evaluate if nurses could effectively integrate thermography into the clinical setting...
October 2016: Ostomy/wound Management
https://www.readbyqxmd.com/read/27767959/evaluation-of-efficacy-of-thermographic-breast-imaging-in-breast-cancer-a-pilot-study
#12
Seetharam Shiva Prasad, L Ramachandra, Vijay Kumar, Aniket Dave, Lalit K Mestha, Krithika Venkatarmani
BACKGROUND: Thermographic imaging is a non-invasive and radiation free imaging modality that measures the infrared radiation released by the body. Recently, there is a renewed interest regarding the scope of thermal imaging for breast cancer. OBJECTIVE: To evaluate the efficacy of thermographic breast imaging in detecting breast cancer. METHODS: A Prospective observational study was carried out from January 2014 to December 2014 at Kasturba Hospital, Manipal, India...
October 17, 2016: Breast Disease
https://www.readbyqxmd.com/read/27759960/effects-of-substrate-heating-and-wettability-on-evaporation-dynamics-and-deposition-patterns-for-a-sessile-water-droplet-containing-colloidal-particles
#13
Nagesh D Patil, Prathamesh G Bange, Rajneesh Bhardwaj, Atul Sharma
Effects of substrate temperature, substrate wettability and particles concentration are experimentally investigated for evaporation of a sessile water droplet containing colloidal particles. Time-varying droplet shapes and temperature of the liquid-gas interface are measured using high-speed visualization and infrared thermography, respectively. The motion of the particles inside the evaporating droplet is qualitatively visualized by an optical microscope and profile of final particle deposit is measured by an optical profilometer...
October 19, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27747269/data-on-thermal-infrared-imaging-in-laboratory-non-human-primates-pleasant-touch-determines-an-increase-in-nasal-skin-temperature-without-affecting-that-of-the-eye-lachrymal-sites
#14
Laura Clara Grandi, Eugenio Heinzl
The data described here relate to the article entitled "The effect of pleasant touch on nose skin temperature, heart rate and heart rate variability: preliminary results in a male laboratory rhesus monkey" (Grandi and Heinzl, 2016) [1]. The cited paper and article here present additional material which represents the first evidence of the effect of pleasant touch in non-human primates in terms of skin temperature change, as recorded by means of infrared thermography. The sweep is considered a pleasant touch for monkeys...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27712655/comparison-of-abdominal-skin-temperature-between-fertile-and-infertile-women-by-infrared-thermography-a-diagnostic-approach
#15
Junyoung Jo, Hyunho Kim
This retrospective study aimed to evaluate the differences in abdominal temperature (AT) between fertile (n=206; age) and infertile (n=250) women between the ages of 30 and 39 years. We evaluated the differences in two distinctive skin temperatures by thermography: ΔT1 (CV8 index) - difference in temperature between the mid-abdomen (CV8 acupuncture area) and ventral upper arm (VUA) and ΔT2 (CV4 index) - difference in temperature between the lower abdomen (CV4 acupuncture area) and VUA. The results indicated that the ΔT1 and ΔT2 of infertile women were significantly lower (by 1...
October 2016: Journal of Thermal Biology
https://www.readbyqxmd.com/read/27662186/heat-transfer-behavior-across-the-dentino-enamel-junction-in-the-human-tooth
#16
Lin Niu, Shao-Jie Dong, Ting-Ting Kong, Rong Wang, Rui Zou, Qi-Da Liu
During eating, the teeth usually endure the sharply temperature changes because of different foods. It is of importance to investigate the heat transfer and heat dissipation behavior of the dentino-enamel junction (DEJ) of human tooth since dentine and enamel have different thermophysical properties. The spatial and temporal temperature distributions on the enamel, dentine, and pulpal chamber of both the human tooth and its discontinuous boundaries, were measured using infrared thermography using a stepped temperature increase on the outer boundary of enamel crowns...
2016: PloS One
https://www.readbyqxmd.com/read/27651710/cold-sodium-chloride-solution-0-9-and-infrared-thermography-can-be-an-alternative-to-radiopaque-contrast-agents-in-phlebography
#17
Aleksandr Livievich Urakov, Anton Aleksandrovic Kasatkin, Natalia Aleksandrovna Urakova, Tatiana Viktorovna Urakova
No abstract text is available yet for this article.
July 2016: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/27649208/forward-looking-infrared-cameras-for-micrometeorological-applications-within-vineyards
#18
Marwan Katurji, Peyman Zawar-Reza
We apply the principles of atmospheric surface layer dynamics within a vineyard canopy to demonstrate the use of forward-looking infrared cameras measuring surface brightness temperature (spectrum bandwidth of 7.5 to 14 μm) at a relatively high temporal rate of 10 s. The temporal surface brightness signal over a few hours of the stable nighttime boundary layer, intermittently interrupted by periods of turbulent heat flux surges, was shown to be related to the observed meteorological measurements by an in situ eddy-covariance system, and reflected the above-canopy wind variability...
2016: Sensors
https://www.readbyqxmd.com/read/27634604/local-pressure-application-effects-on-discomfort-temperature-and-limb-oxygenation
#19
Kenneth E Games, Joni M Lakin, John C Quindry, Wendi H Weimar, JoEllen M Sefton
INTRODUCTION: Despite significant investment into the development and improvement of military helicopter seat systems, military aviators continue to report seat system related pain and discomfort during prolonged missions. METHODS: Using a factorial repeated measures design, 15 healthy subjects completed the study, in which focal pressure was applied to two locations on the sitting surfaces of the body (ischial tuberosity and middle of the posterior thigh). Pressure was applied using a purpose-built pressure application system allowing subjects to sit in a position mimicking the sitting position in the UH-60 Black Hawk helicopter...
August 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27633094/usefulness-of-thermographic-analysis-to-control-temperature-homogeneity-in-the-development-and-implementation-of-a-closed-recirculating-co2-chemohyperthermia-model
#20
David Padilla-Valverde, Susana Sanchez-Garcia, Esther García-Santos, Carlos Marcote-Ibañez, Mercedes Molina-Robles, Jesús Martín-Fernández, Pedro Villarejo-Campos
PURPOSE: To determine the effectiveness of thermography to control the distribution of abdominal temperature in the development of a closed chemohyperthermia model Materials and Methods: For thermographic analysis, we divided the abdominopelvic cavity into nine regions according to a modification of carcinomatosis peritoneal index. A difference of 2.5º C between and within the quadrants, and thermographic colors, were used as asymmetric criteria. Preclinical study: Rats Model: Six athymic nude rats, male, rnu/rnu...
September 16, 2016: International Journal of Hyperthermia
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