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https://www.readbyqxmd.com/read/28619291/body-mass-modulates-huddling-dynamics-and-body-temperature-profiles-in-rabbit-pups
#1
Amando Bautista, José Alfredo Zepeda, Verónica Reyes, Christophe Féron, Heiko G Rödel, Robyn Hudson
Altricial mammals typically lack the physiological capacity to thermoregulate independently during the early postnatal period, and in litter-bearing species the young benefit strongly from huddling together with their litter siblings. Such litter huddles are highly dynamic systems, often characterized by competition for energetically favorable, central positions. In the present study, carried out in domestic rabbits Oryctolagus cuniculus, we asked whether individual differences in body mass affect changes in body temperature during changes in the position within the huddle...
June 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28615086/the-automated-analysis-of-clustering-behaviour-of-piglets-from-thermal-images-in-response-to-immune-challenge-by-vaccination
#2
N J Cook, C J Bench, T Liu, B Chabot, A L Schaefer
An automated method of estimating the spatial distribution of piglets within a pen was used to assess huddling behaviour under normal conditions and during a febrile response to vaccination. The automated method was compared with a manual assessment of clustering activity. Huddling behaviour was partly related to environmental conditions and clock time such that more huddling occurred during the night and at lower ambient air temperatures. There were no positive relationships between maximum pig temperatures and environmental conditions, suggesting that the narrow range of air temperatures in this study was not a significant factor for pig temperature...
June 15, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28609182/infrared-thermography-reveals-effect-of-working-posture-on-skin-temperature-in-office-workers
#3
Roope Lasanen, Markus K H Malo, Olavi Airaksinen, Jari Karhu, Juha Töyräs, Petro Julkunen
INTRODUCTION: Musculoskeletal symptoms related to using traditional computer workstations are common. To improve ergonomics of workstations quantitative methods for measuring muscle stress and strain are needed. We hypothesize that infrared thermography (IRT) is suited for this purpose. METHODS: This hypothesis was evaluated by estimating muscle activity in upright and traditional working postures with IRT and surface electromyography (sEMG). IRT and sEMG measurements were conducted in 14 female participants with both working postures...
June 13, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28604356/ocular-surface-temperature-in-patients-with-evaporative-and-aqueous-deficient-dry-eyes-a-thermographic-approach
#4
Sara Matteoli, Eleonora Favuzza, Lucrezia Mazzantini, Pasquale Aragona, Stefania Cappelli, Andrea Corvi, Rita Mencucci
In recent decades infrared thermography (IR) has allowed accurate and quantitative measurements of the ocular surface temperature (OST), applying a non-invasive procedure. The objective of this work was to develop a procedure based on IR, which allows characterizing the cooling of the ocular surface of patients suffering from dry eye syndrome, and distinguishing among patients suffering from aqueous deficient dry eye (ADDE) and evaporative dry eyes (EDE). Approach: All patients examined (34F/4M, 23-84 years) were divided into two groups according to their Schirmer I result (≤7 mm for ADDE and >7 mm for EDE), and the OST was recorded for 7 s at 30Hz...
June 12, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28570528/subsurface-defect-localization-by-structured-heating-using-laser-projected-photothermal-thermography
#5
Erik Thiel, Mathias Ziegler
The presented method is used to locate subsurface defects oriented perpendicularly to the surface. To achieve this, we create destructively interfering thermal wave fields that are disturbed by the defect. This effect is measured and used to locate the defect. We form the destructively interfering wave fields by using a modified projector. The original light engine of the projector is replaced with a fiber-coupled high-power diode laser. Its beam is shaped and aligned to the projector's spatial light modulator and optimized for optimal optical throughput and homogeneous projection by first characterizing the beam profile, and, second, correcting it mechanically and numerically...
May 15, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28562767/infrared-thermography-to-diagnose-and-manage-venomous-animal-bites-and-stings
#6
Carlos Roberto de Medeiros, Marcos Leal Brioschi, Solange Nogueira de Souza, Manoel Jacobsen Teixeira
INTRODUCTION: Infrared imaging (IR) is a noninvasive technique that quantifies body surface temperature, producing a digital color image. IR has been used to study diseases in which skin temperature can reflect the presence of inflammation. METHODS: This was an observational pilot study of eight patients envenomed by snakes, spiders, and scorpions. All patients were examined using a thermal camera. RESULTS: In all cases, we obtained infrared images that corroborated clinical findings indicating localized effects of venom, specifically inflammation...
March 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28560116/infrared-thermography-applied-to-lower-limb-muscles-in-elite-soccer-players-with-functional-ankle-equinus-and-non-equinus-condition
#7
David Rodríguez-Sanz, Marta Elena Losa-Iglesias, Daniel López-López, César Calvo-Lobo, Patricia Palomo-López, Ricardo Becerro-de-Bengoa-Vallejo
Gastrocnemius-soleus equinus (GSE) is a foot-ankle complaint in which the extensibility of the gastrocnemius (G) and soleus muscles (triceps surae) and ankle are limited to a dorsiflexion beyond a neutral ankle position. The asymmetric forces of leg muscles and the associated asymmetric loading forces might promote major activation of the triceps surae, tibialis anterior, transverses abdominal and multifidus muscles. Here, we made infrared recordings of 21 sportsmen (elite professional soccer players) before activity and after 30 min of running...
2017: PeerJ
https://www.readbyqxmd.com/read/28559818/infrared-thermography-in-surgery-of-newly-diagnosed-glioblastoma-multiforme-a-technical-case-report
#8
Emanuil Naydenov, Krasimir Minkin, Marin Penkov, Sevdalin Nachev, Walter Stummer
Infrared thermography (IRT) is a real-time non-contact diagnostic tool with a broad potential for neurosurgical applications. Here we describe the intraoperative use of this technique in a single patient with newly diagnosed glioblastoma multiforme (GBM). An 86-year-old female was admitted in the clinic with a 2-month history of slowly progressing left-sided paresis. Neuroimaging studies demonstrated an irregular space-occupying process consistent with a malignant glioma in the right fronto-temporo-insular region...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28558934/variation-in-rhinarium-temperature-indicates-sensory-specializations-in-placental-mammals
#9
Nele Gläser, Ronald H H Kröger
The rhinarium, a specialized nose-tip characterized by an area of naked and wet skin around the nostrils, is a typical mammalian structure. The type and amount of innervation suggests a sensory role and morphological diversity implies so far unidentified species-specific functional specializations. Rhinaria also vary in temperature and this may be related to the functions of these sensory organs. We performed a comparative study on rhinarium temperature in order to learn more about possible correlations with phylogeny and ecology...
July 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28535867/comparison-of-3-methods-for-preventing-perianesthetic-hypothermia-in-callimicos-callimico-goeldii
#10
Sathya K Chinnadurai, James G Johnson Iii, Jennifer N Langan
Perianesthetic hypothermia is one of the most common complications in veterinary anesthesia, especially in small patients with a large body surface area to mass ratio. During anesthesia, body heat can be lost through 4 mechanisms-radiation, convection, conduction, and evaporation-but anesthetists frequently address only one mechanism at a time. Here we sought to evaluate 3 methods of preventing perianesthetic hypothermia in callimicos (Callimico goeldii). In our experience, these small NHP routinely become hypothermic under even brief inhalant anesthesia...
May 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28528892/hot-chicks-cold-feet
#11
Randi Oppermann Moe, Jon Bohlin, Andreas Flø, Guro Vasdal, Solveig Marie Stubsjøen
Infrared thermography (IRT) is increasingly applied as a noninvasive technique for measuring surface body temperature alterations related to e.g. stress, emotions and leg pathologies in avian species. As a basis for the validation of IRT as a future tool for veterinary diagnostics such as detection and/or prediction of subclinical footpad pathologies in broiler chickens, this study explored effects of manual restraint at two different ages on footpad temperatures. Head region temperatures were applied as additional measures of emotional arousal and stress...
May 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28525303/low-level-laser-therapy-after-wisdom-teeth-surgery-evaluation-of-immunologic-markers-secretory-immunoglobulin-a-and-lysozyme-levels-and-thermographic-examination-placebo-controlled-study
#12
Tatjana Dostalova, Veronika Kroulikova, Stepan Podzimek, Helena Jelinková
OBJECTIVE: The goal of this investigation is to analyze the effect of therapeutic low-level laser therapy (LLLT) to have a possibility to check pain and inflammation connected with surgical removal of impacted lower third molars in general anesthesia or even phobia [not accompanied by pain or fear of dental treatment, using immunologic markers-secretory immunoglobulin A (sIgA) and lysozyme]. The healing process was also monitored by infrared thermography. BACKGROUND DATA: LLLT can accelerate the proliferation phase of healing and decrease the inflammatory reaction, but the effect is not really clear...
May 16, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28524110/infrared-thermography-sensor-for-temperature-and-speed-measurement-of-moving-material
#13
Rubén Usamentiaga, Daniel Fernando García
Infrared thermography offers significant advantages in monitoring the temperature of objects over time, but crucial aspects need to be addressed. Movements between the infrared camera and the inspected material seriously affect the accuracy of the calculated temperature. These movements can be the consequence of solid objects that are moved, molten metal poured, material on a conveyor belt, or just vibrations. This work proposes a solution for monitoring the temperature of material in these scenarios. In this work both real movements and vibrations are treated equally, proposing a unified solution for both problems...
May 18, 2017: Sensors
https://www.readbyqxmd.com/read/28517368/testicular-thermoregulation-scrotal-surface-temperature-patterns-and-semen-quality-of-water-buffalo-bulls-reared-in-a-tropical-climate
#14
L K X Silva, J S Sousa, A O A Silva, J B Lourenço Junior, C Faturi, L G Martorano, I M Franco, M H A Pantoja, D V Barros, A R Garcia
This study evaluated the capacity of thermoregulation and its consequences on the scrotal surface temperature patterns and semen quality of buffalo bulls raised in a wet tropical climate. Eleven water buffaloes were evaluated in the rainiest, in the transitional and in the less rainy season. Air temperature and humidity were consistently high, but the animals did not show thermal stress in any season. The scrotal temperature gradient of buffalo bulls using infrared thermography was described, and three parallel and decreasing thermal bands were characterised...
May 18, 2017: Andrologia
https://www.readbyqxmd.com/read/28510453/influence-of-local-heating-on-marangoni-flows-and-evaporation-kinetics-of-pure-water-drops
#15
Alexandros Askounis, Yutaku Kita, Masamichi Kohno, Yasuyuki Takata, Vasileios Koutsos, Khellil Sefiane
The effect of localized heating on the evaporation of pure sessile water drops was probed experimentally by a combination of infrared thermography and optical imaging. In particular, we studied the effect of three different heating powers and two different locations, directly below the center and edge of the drop. In all cases, four distinct stages were identified according to the emerging thermal patterns. In particular, depending on heating location, recirculating vortices emerge that either remain pinned or move azimuthally within the drop...
June 1, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28502658/spontaneous-rapid-odor-source-localization-behavior-requires-interhemispheric-communication
#16
José Esquivelzeta Rabell, Kadir Mutlu, João Noutel, Pamela Martin Del Olmo, Sebastian Haesler
Navigation, finding food sources, and avoiding danger critically depend on the identification and spatial localization of airborne chemicals. When monitoring the olfactory environment, rodents spontaneously engage in active olfactory sampling behavior, also referred to as exploratory sniffing [1]. Exploratory sniffing is characterized by stereotypical high-frequency respiration, which is also reliably evoked by novel odorant stimuli [2, 3]. To study novelty-induced exploratory sniffing, we developed a novel, non-contact method for measuring respiration by infrared (IR) thermography in a behavioral paradigm in which novel and familiar stimuli are presented to head-restrained mice...
May 22, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28497170/high-systemic-and-testicular-thermolytic-efficiency-during-heat-tolerance-test-reflects-better-semen-quality-in-rams-of-tropical-breeds
#17
Priscila Reis Kahwage, Sérgio Novita Esteves, Manuel Antônio Chagas Jacinto, Waldomiro Barioni Junior, José Ricardo Macedo Pezzopane, Messy Hannear de Andrade Pantoja, Cristian Bosi, Maria Carolina Villani Miguel, Kaue Mahlmeister, Alexandre Rossetto Garcia
This study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1-animals maintained in the shade (11 to 12 h); period 2-animals exposed to sunlight (12 to 13 h); and period 3-animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period...
May 11, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28495874/cranking-up-the-heat-relationships-between-energetically-costly-song-features-and-the-increase-in-thorax-temperature-in-male-crickets-and-katydids
#18
B Erregger, H Kovac, A Stabentheiner, M Hartbauer, H Römer, A K D Schmidt
Sexual displays of acoustically signalling insects are used in the context of mate attraction and mate choice. While energetic investment in sound production can increase the reproductive success of the sender, this entails metabolic costs. Resource allocation into sexually selected, reproductive traits can trade off against allocation to naturally selected traits (e.g., growth, immunity) when individuals' energy budgets are limited. Estimating the magnitude of the costs invested in acoustic signalling is necessary to understand this trade-off and its influence on fitness and life-history...
May 11, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28478856/continuous-thermographic-observation-may-predict-extravasation-in-chemotherapy-treated-patients
#19
Maiko Oya, Ryoko Murayama, Makoto Oe, Koichi Yabunaka, Hidenori Tanabe, Toshiaki Takahashi, Yuko Matsui, Eiko Otomo, Chieko Komiyama, Hiromi Sanada
PURPOSE: Extravasation, or leakage of vesicant drugs into subcutaneous tissues, causes serious complications such as induration and necrosis in chemotherapy-treated patients. As macroscopic observation may overlook symptoms during infusion, we focused on skin temperature changes at puncture sites and studied thermographic patterns related to induration or necrosis caused by extravasation. METHODS: Outpatients undergoing chemotherapy using peripheral intravenous catheters were enrolled in this prospective observational study...
June 2017: European Journal of Oncology Nursing: the Official Journal of European Oncology Nursing Society
https://www.readbyqxmd.com/read/28472838/evaluating-surgical-delay-using-infrared-thermography-in-an-island-pedicled-perforator-flap-rat-model
#20
Xiucun Li, Miao Chen, Suraj Maharjan, Jianli Cui, Laijin Lu, Xu Gong
No abstract text is available yet for this article.
May 4, 2017: Journal of Reconstructive Microsurgery
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