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https://www.readbyqxmd.com/read/28102957/rf-safety-assessment-of-a-bilateral-four-channel-transmit-receive-7-tesla-breast-coil-sar-versus-tissue-temperature-limits
#1
Thomas M Fiedler, Mark E Ladd, Andreas K Bitz
PURPOSE: The purpose of this work was to perform an RF safety evaluation for a bilateral four-channel transmit/receive breast coil and to determine the maximum permissible input power for which RF exposure of the subject stays within recommended limits. The safety evaluation was done based on SAR as well as on temperature simulations. In comparison to SAR, temperature is more directly correlated with tissue damage, which allows a more precise safety assessment. The temperature simulations were performed by applying three different blood perfusion models as well as two different ambient temperatures...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102900/metabolic-theory-predicts-animal-self-thinning
#2
Tomas Jonsson
1.The Metabolic Theory of Ecology (MTE) predicts observed patterns in ecology based on metabolic rates of individuals. The theory is influential but also criticized for a lack of firm empirical evidence confirming MTE's quantitative predictions of processes, e.g. outcome of competition, at population or community level. 2.Self-thinning is a well-known population level phenomenon among plants, but a much less studied phenomenon in animal populations and no consensus exists on what a universal thinning slope for animal populations might be, or if it exists...
January 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28102433/advanced-forensic-validation-for-human-spermatozoa-identification-using-sperm-hy-liter%C3%A2-express-with-quantitative-image-analysis
#3
Ayari Takamura, Ken Watanabe, Tomoko Akutsu
Identification of human semen is indispensable for the investigation of sexual assaults. Fluorescence staining methods using commercial kits, such as the series of SPERM HY-LITER™ kits, have been useful to detect human sperm via strong fluorescence. These kits have been examined from various forensic aspects. However, because of a lack of evaluation methods, these studies did not provide objective, or quantitative, descriptions of the results nor clear criteria for the decisions reached. In addition, the variety of validations was considerably limited...
January 19, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28101566/effect-of-physical-activity-in-the-first-five-days-after-cardiac-surgery
#4
Sean F Mungovan, Preetraj Singh, Gregory C Gass, Neil A Smart, Andrew D Hirschhorn
OBJECTIVES: To quantify physiotherapist-supervised and independent physical activity undertaken from the first to the fifth day after cardiac surgery (POD1 to POD5), and to relate the amount of physical activity undertaken with hospital stay and postoperative physiological functional capacity on POD6. METHODS: Physiotherapist-supervised and independent physical activity were monitored in 83 adult patients undergoing cardiac surgery, using a bi-axial accelerometer and skin sensors that measured, galvanic skin response and body temperature...
January 19, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28100818/lowland-biotic-attrition-revisited-body-size-and-variation-among-climate-change-winners-and-losers
#5
Jedediah F Brodie, Matthew Strimas-Mackey, Jayasilan Mohd-Azlan, Alys Granados, Henry Bernard, Anthony J Giordano, Olga E Helmy
The responses of lowland tropical communities to climate change will critically influence global biodiversity but remain poorly understood. If species in these systems are unable to tolerate warming, the communities-currently the most diverse on Earth-may become depauperate ('biotic attrition'). In response to temperature changes, animals can adjust their distribution in space or their activity in time, but these two components of the niche are seldom considered together. We assessed the spatio-temporal niches of rainforest mammal species in Borneo across gradients in elevation and temperature...
January 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28100803/a-new-cue-for-torpor-induction-charcoal-ash-and-smoke
#6
Clare Stawski, Julia Nowack, Gerhard Körtner, Fritz Geiser
Recent work has shown that the use of torpor for energy conservation increases after forest fires in heterothermic mammals, probably in response to the reduction of food. However, the specific environmental cues for this increased torpor expression remain unknown. It is possible that smoke and the novel substrate of charcoal and ash act as signals for an impending period of starvation requiring torpor. We therefore tested the hypothesis that the combined cues of smoke, a charcoal/ash substrate and food shortage will enhance torpor expression in a small forest-dwelling marsupial, the yellow-footed antechinus (Antechinus flavipes), because like other animals that live in fire-prone habitats they must effectively respond to fires to ensure survival...
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100441/assessing-the-efficacy-of-an-app-based-method-of-family-planning-the-dot-study-protocol
#7
Rebecca G Simmons, Dominick C Shattuck, Victoria H Jennings
BACKGROUND: Some 222 million women worldwide have unmet needs for contraception; they want to avoid pregnancy, but are not using a contraceptive method, primarily because of concerns about side effects associated with most available methods. Expanding contraceptive options-particularly fertility awareness options that provide women with information about which days during their menstrual cycles they are likely to become pregnant if they have unprotected intercourse-has the potential to reduce unmet need...
January 18, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28100054/efficacy-of-silver-hydrophilic-poly-p-xylylene-on-preventing-bacterial-growth-and-biofilm-formation-in-urinary-catheters
#8
Hamideh Heidari Zare, Viktorija Juhart, Attila Vass, Gerhard Franz, Dieter Jocham
Catheter associated urinary tract infections (CAUTI), caused by several strains of bacteria, are a common complication for catheterized patients. This may eventually lead to a blockage of the catheter due to the formation of a crystalline or amorphous biofilm. Inhibiting bacteria should result in a longer application time free of complaints. This issue has been investigated using an innovative type of silver-coated catheter with a semipermeable cap layer to prevent CAUTI. In this work, two different types of silver catheters were investigated, both of which were capped with poly(p-xylylene) (PPX-N) and exhibited different surface properties that completely changed their wetting conduct with water...
January 18, 2017: Biointerphases
https://www.readbyqxmd.com/read/28099886/itraq-based-quantitative-proteome-revealed-metabolic-changes-of-flammulina-velutipes-mycelia-in-response-to-cold-stress
#9
Jing-Yu Liu, Jun-Long Men, Ming-Chang Chang, Cui-Ping Feng, Ling-Gang Yuan
: Temperature is one of the pivotal factors influencing mycelium growth and fruit-body formation of Flammulina velutipes. To gain insights into hyphae growth and fruit-body formation events and facilitate the identification of potential stage-specific biomarker candidates, we investigated the proteome response of F. velutipes mycelia to cold stresses using iTRAQ-coupled two-dimensional liquid chromatography tandem mass spectrometry (2D LC-MS/MS) technique. Among 1198 proteins identified with high confidence, a total of 63 displayed altered expression level after cold stress treatments...
January 15, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28097990/lowering-body-temperature-improves-outcomes-in-adults-with-traumatic-brain-injury
#10
(no author information available yet)
Lowering the body temperature of adults who experience a traumatic brain injury can significantly improve chances of survival, new study results suggest.
January 18, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28097602/dietary-supplementation-of-chromium-can-alleviate-negative-impacts-of-heat-stress-on-performance-carcass-yield-and-some-blood-hematology-and-chemistry-indices-of-growing-japanese-quail
#11
Mohamed Soliman El-Kholy, Mohamed Mohamed El-Hindawy, Mahmoud Alagawany, Mohamed Ezzat Abd El-Hack, Sabry Abd El-Gawad Abd El-Halim El-Sayed
The main objective of this work was to investigate the impact of dietary chromium supplementation on growth indices, carcass yield, and some hematological and biochemical blood parameters of growing Japanese quails subjected to heat stress. A total of 360 unsexed 2-week-old Japanese quail chicks were used in a 2 × 3 factorial arrangement that had two ambient temperatures (23 ± 2 and 33 ± 2 °C) and three dietary chromium (0.00, 500, and 1000 μg Cr/kg diet as chromium picolinate). For induction of heat stress, the room temperature was set at 33 ± 2 °C from 2 to 6 weeks of age...
January 17, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28097049/sharing-refuges-on-arid-islands-ecological-and-social-influence-on-aggregation-behaviour-of-wall-geckos
#12
Raquel Vasconcelos, Sara Rocha, Xavier Santos
BACKGROUND: The extent of social behaviour among reptiles is underappreciated. Two types of aggregations are recognized in lizards: ecological and social, i.e., related to the attraction to a site or to animals of the same species, respectively. As most lizards are territorial, aggregations increase the probability of aggressive interactions among individuals, a density-dependent behaviour. METHODS: After some spurious observations of aggregation behaviour in the endemic Cabo Verde nocturnal gecko Tarentola substituta, we conducted a field-based study in order to thoroughly characterize it...
2017: PeerJ
https://www.readbyqxmd.com/read/28096663/pressure-ulcers-in-palliative-ward-patients-hyponatremia-and-low-blood-pressure-as-indicators-of-risk
#13
Danuta Sternal, Krzysztof Wilczyński, Jan Szewieczek
BACKGROUND: Prevention strategies for pressure ulcer formation remain critical in patients with an advanced illness. We analyzed factors associated with the development of pressure ulcers in patients hospitalized in a palliative care ward setting. PATIENTS AND METHODS: This study was a retrospective analysis of 329 consecutive patients with a mean age (± standard deviation) of 70.4±11.8 years (range: 30-96 years, median 70.0 years; 55.3% women), who were admitted to the Palliative Care Department between July 2012 and May 2014...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28096610/investigation-of-body-and-udder-skin-surface-temperature-differentials-as-an-early-indicator-of-mastitis-in-holstein-friesian-crossbred-cows-using-digital-infrared-thermography-technique
#14
M Sathiyabarathi, S Jeyakumar, A Manimaran, Heartwin A Pushpadass, M Sivaram, K P Ramesha, D N Das, Mukund A Kataktalware, G Jayaprakash, Tapas Kumar Patbandha
AIM: The objective of this study was to investigate the ability of infrared thermography (IRT) technique and its interrelationship with conventional mastitis indicators for the early detection of mastitis in Holstein Friesian (HF) crossbred cows. MATERIALS AND METHODS: A total of 76 quarters of lactating HF crossbred (Bos indicus × Bos taurus) cows (n=19) were monitored for body temperature (i.e., eye temperature) and udder skin surface temperature (USST) before milking using forward-looking infrared (FLIR) i5 camera...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28095955/preconditioning-to-reduce-decompression-stress-in-scuba-divers
#15
Peter Germonpré, Costantino Balestra
BACKGROUND: Using ultrasound imaging, vascular gas emboli (VGE) are observed after asymptomatic scuba dives and are considered a key element in the potential development of decompression sickness (DCS). Diving is also accompanied with vascular dysfunction, as measured by flow-mediated dilation (FMD). Previous studies showed significant intersubject variability to VGE for the same diving exposure and demonstrated that VGE can be reduced with even a single pre-dive intervention. Several preconditioning methods have been reported recently, seemingly acting either on VGE quantity or on endothelial inflammatory markers...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28095532/1060-nm-diode-hyperthermic-laser-lipolysis-the-latest-in-non-invasive-body-contouring
#16
Laura Schilling, Nazanin Saedi, Robert Weiss
Non-invasive body contouring is becoming increasingly popular in the United States. Using the 1060 nm diode laser to achieve hyperthermic temperatures within the adipose tissue with subsequent lipolysis is one of the most recent advancements in this field and is the first of its kind. This wavelength was carefully chosen to effectively target the unwanted adipocytes while sparing the overlying skin and adnexae. Appreciable results are achieved after a single treatment, and these results are comparable to other non-invasive technologies...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28094373/conformational-dynamics-and-self-association-of-intrinsically-disordered-huntingtin-exon-1-in-cells
#17
Steffen Büning, Abhishek Sharma, Shivang Vachharajani, Estella Newcombe, Angelique Ormsby, Mimi Gao, David Gnutt, Tobias Vöpel, Danny M Hatters, Simon Ebbinghaus
Huntington's disease is caused by a CAG trinucleotide expansion mutation in the Huntingtin gene that leads to an artificially long polyglutamine sequence in the Huntingtin protein. A key feature of the disease is the intracellular aggregation of the Huntingtin exon 1 protein (Httex1) into micrometer sized inclusion bodies. The aggregation process of Httex1 has been extensively studied in vitro, however, the crucial early events of nucleation and aggregation in the cell remain elusive. Here, we studied the conformational dynamics and self-association of Httex1 by in-cell experiments using laser-induced temperature jumps and analytical ultracentrifugation...
January 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28093998/potential-of-plant-alkaloids-as-antipyretic-drugs-of-future
#18
Imad Ahmad, Haroon Khan, Anwar Ul-Hassan Gilani, Mohammad A Kamal
Fever or Pyrexia means abnormal rise in body temperature above the usual range of normal in response to a variety of infectious, immunological and neoplastic stimuli. To normalize these febrile conditions, several synthetic agents are in clinical practice such as acetaminophen, ibuprofen, and aspirin. However, they are having many side effects which sometimes challenge their applications. The various sources are under investigation worldwide to overcome issues of unwanted effects and to better therapeutic response...
January 15, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28093502/heat-strain-volume-depletion-and-kidney-function-in-california-agricultural-workers
#19
Sally Moyce, Diane Mitchell, Tracey Armitage, Daniel Tancredi, Jill Joseph, Marc Schenker
BACKGROUND: Agricultural work can expose workers to increased risk of heat strain and volume depletion due to repeated exposures to high ambient temperatures, arduous physical exertion and limited rehydration. These risk factors may result in acute kidney injury (AKI). METHODS: We estimated AKI cumulative incidence in a convenience sample of 283 agricultural workers based on elevations of serum creatinine between preshift and postshift blood samples. Heat strain was assessed based on changes in core body temperature and heart rate...
January 16, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28093105/comparison-of-submaximal-exercise-test-results-and-severity-of-brachycephalic-obstructive-airway-syndrome-in-english-bulldogs
#20
Liisa Lilja-Maula, Anu K Lappalainen, Heli K Hyytiäinen, Erja Kuusela, Mirja Kaimio, Kirsti Schildt, Sari Mölsä, Mikael Morelius, Minna M Rajamäki
Canine brachycephalic obstructive airway syndrome (BOAS) is a complex respiratory disease related to congenitally flattened facial and skull anatomy. BOAS causes respiratory distress, heat and exercise intolerance, and gastrointestinal signs. English bulldogs (EB) have a high prevalence of BOAS. Currently, the severity of BOAS signs in veterinary practice is assessed subjectively. To reduce BOAS in brachycephalic breeds, an objective and easy-to-use tool could help breeders select healthier animals. Exercise tests, such as the 6 min walk test (distance walked measured) or the 1000 m walk test (duration measured), could be used to assess the severity of BOAS, as exercise intolerance and impaired recovery are key features of BOAS...
January 2017: Veterinary Journal
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