keyword
MENU ▼
Read by QxMD icon Read
search

Active cooling

keyword
https://www.readbyqxmd.com/read/27903515/passive-heat-acclimation-improves-skeletal-muscle-contractility-in-humans
#1
Sebastien Racinais, Mathew G Wilson, Julien D Périard
The aim of this study was to investigate the effect of repeated passive heat exposure (i.e. acclimation) on muscle contractility in humans. Fourteen non-heat acclimated males completed two trials including electrically evoked twitches and voluntary contractions in thermoneutral conditions (COOL: 24ºC, 40% RH) and hot ambient conditions in the hyperthermic state (HOT: 44-50ºC, 50% RH) on consecutive days in a counterbalanced order. Rectal temperature was ~36.5ºC in COOL and was maintained at ~39ºC throughout HOT...
November 30, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27902906/generalized-tetanus-in-a-gyrfalcon-falco-rusticolus-with-pododermatitis
#2
Hugues Beaufrère, Delphine Laniesse, Paul Stickings, Robert Tierney, Thea Sesardic, Durda Slavic, Nicole Compo, Dale A Smith
A 2-yr-old male gyrfalcon ( Falco rusticolus ) was presented for severe and generalized muscle spasticity and pododermatitis. The falcon had been treated for pododermatitis over the previous 4 mo. Muscle rigidity and spasms involved the entire bird but were more severe on the right leg. The bird was also tachypneic and hyperthermic at 45 C. While the plantar pododermatitis lesions had healed, there was still a small abscess on the lateral aspect of the right foot. Clinical signs were consistent with tetanus...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27900825/fungal-infection-dynamics-in-response-to-temperature-in-the-lepidopteran-insect-galleria-mellonella
#3
Vadim Y Kryukov, Olga N Yaroslavtseva, Miranda M A Whitten, Maksim V Tyurin, Katherine J Ficken, Carolyn Greig, Nadja R Melo, Viktor V Glupov, Ivan M Dubovskiy, Tariq M Butt
This study examines how the dynamics of fungus - insect interactions can be modulated by temperature. The wax moth, Galleria mellonella, is a well-studied and important model insect whose larvae in the wild develop optimally at around 34°C in beehives. However, surprisingly little research on wax moths has been conducted at relevant temperatures. In this study, the entomopathogenic fungus Metarhizium robertsii inflicted rapid and substantial mortality on wax moth larvae maintained at a constant temperature of 24°C, but at 34°C a ten-fold higher dose was required to achieve an equivalent mortality...
November 29, 2016: Insect Science
https://www.readbyqxmd.com/read/27899893/raynaud-s-phenomenon-a-brief-review-of-the-underlying-mechanisms
#4
REVIEW
Manal M Fardoun, Joseph Nassif, Khodr Issa, Elias Baydoun, Ali H Eid
Raynaud's phenomenon (RP) is characterized by exaggerated cold-induced vasoconstriction. This augmented vasoconstriction occurs by virtue of a reflex response to cooling via the sympathetic nervous system as well as by local activation of α2C adrenoceptors (α2C-AR). In a cold-initiated, mitochondrion-mediated mechanism involving reactive oxygen species and the Rho/ROCK pathway, cytoskeletal rearrangement in vascular smooth muscle cells orchestrates the translocation of α2C-AR to the cell membrane, where this receptor readily interacts with its ligand...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27899064/gdf5-mediated-enhancement-of-chondrocyte-phenotype-is-inhibited-by-heparin-implication-for-the-use-of-heparin-in-the-clinic-and-in-tissue-engineering-applications
#5
Bethanie Imogen Ayerst, Raymond A A Smith, Victor Nurcombe, Anthony J Day, Catherine L R Merry, Simon Cool
The highly sulfated glycosaminoglycan (GAG) heparin is widely used in the clinic as an anticoagulant, and researchers are now using it to enhance stem cell expansion/ differentiation protocols, as well as to improve the delivery of growth factors for tissue engineering strategies. Growth differentiation factor 5 (GDF5) belongs to the bone morphogenetic protein family of proteins and is vital for skeletal formation, however, its interaction with heparin and heparan sulfate (HS) has not been studied. We identify GDF5 as a novel heparin/ HS-binding protein, and show that HS proteoglycans are vital in localizing GDF5 to the cell surface...
November 29, 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27898801/reduction-of-methane-emission-during-slurry-storage-by-the-addition-of-effective-microorganisms-and-excessive-carbon-source-from-brewing-sugar
#6
Mohd Saufi B Bastami, Davey L Jones, David R Chadwick
Storing livestock manure is the primary stage of manure management where microbial processes and chemical reactions result in the release of methane (CH), nitrous oxide (NO), ammonia (NH), and carbon dioxide (CO). This study examined the reduction of CH emissions from slurry storage under two temperatures (cool [10°C] and warm [30°C]) when a glucose-rich substrate (brewing sugar) and activated effective microorganisms were applied at 10% (w/w) and 5% (v/w), respectively. Brewing sugar addition influenced microbial anaerobic respiration, resulting in a reduction of slurry pH to <5...
November 2016: Journal of Environmental Quality
https://www.readbyqxmd.com/read/27898247/challenges-for-the-maintenance-and-cryopreservation-of-multiple-isolates-of-model-microorganisms-an-example-using-the-marine-diatom-skeletonema-marinoi
#7
John G Day, Simon Tytor, Jenny Egardt, Monica Applegren, Cecilia Rad-Menéndez, Olga Chepurnova, Wim Vyverman, Anna Godhe
Modern genomic and metabolomic tools have provided the possibility of generating and interrogating large datasets that can provide answers to previously imponderable taxonomic, evolutionary, ecological, and physiological questions. However, the curatorial tools needed to provide and maintain the relevant biological resources on which new knowledge can be built have not kept pace with this meteoric rise in scientific capacity, its associated activity, or the huge increase in published science. The availability of biological material of guaranteed identity and quality in Biological Resource Centers is fundamental for scientific research, but it crucially depends on there being adequate preservation/maintenance methods that are capable of ensuring phenotypic, genotypic, and functional security of the biological material(s)...
November 29, 2016: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/27898162/residual-limb-skin-temperature-and-thermal-comfort-in-people-with-amputation-during-activity-in-a-cold-environment
#8
Ava D Segal, Glenn K Klute
Thermal comfort remains a common problem for people with lower-limb amputation. Both donning a prosthesis and engaging in activity at room temperature can increase residual limb skin temperature; however, the effects of activity on skin temperature and comfort in more extreme environments remain unknown. We examined residual limb skin temperatures and perceived thermal comfort (PTC; 11-point Likert scale) of participants with unilateral transtibial amputation (n = 8) who were snowshoeing in a cold environment...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27895985/multi-channel-multi-distance-broadband-near-infrared-spectroscopy-system-to-measure-the-spatial-response-of-cellular-oxygen-metabolism-and-tissue-oxygenation
#9
Phong Phan, David Highton, Jonathan Lai, Martin Smith, Clare Elwell, Ilias Tachtsidis
We present a multi-channel, multi-distance broadband near-infrared spectroscopy (NIRS) system with the capability of measuring changes in haemoglobin concentrations (Δ[HbO2], Δ[HHb]), oxidation state of cytochrome-c-oxidase (Δ[oxCCO]) and tissue oxygen saturation (TOI) in the adult human brain. The main components of the instrument are two customized spectrographs and two light sources. Each spectrograph is lens-based to improve light throughput, has a grating enhanced to optimise reflection in the near-infrared (NIR) spectral region and uses a front illuminated cooled CCD camera (-70° C) with a square chip dimension of 12...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27891612/neurovascular-mechanisms-underlying-augmented-cold-induced-reflex-cutaneous-vasoconstriction-in-human-hypertension
#10
Jody L Greaney, W Larry Kenney, Lacy M Alexander
Despite ample evidence of dysregulated sympathetic control of the peripheral vasculature in hypertension, no studies have examined integrated neurovascular function during cold stress in hypertensive adults (HTN). We hypothesized that (1) whole-body cooling would elicit greater cutaneous vasoconstriction and greater increases in skin sympathetic nervous system activity (SSNA) in HTN (n = 14; 56 ± 2 yrs) compared to age-matched normotensive adults (NTN; n = 14; 55 ± 2 yrs) and (2) augmented reflex vasoconstriction in HTN would be mediated by an increase in cutaneous vascular adrenergic sensitivity and a greater contribution of non-adrenergic sympathetic co-transmitters...
November 28, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27885847/receptor-specific-trail-as-a-means-to-achieve-targeted-elimination-of-activated
#11
Mohammad Arabpour, Robbert Cool, Klaas Nico Faber, Wim J Quax, Hidde J Haisma
Activated Hepatic Stellate Cells (HSCs) are known to play a central role in liver fibrosis and their elimination is a crucial step towards the resolution and reversion of liver fibrosis. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a molecule that may contribute to the apoptotic removal of activated HSC through binding to its dedicated receptors. In the present study, we investigated the potential application of recombinant receptor-specific TRAIL proteins in the efficient elimination of activated HSCs...
November 25, 2016: Journal of Drug Targeting
https://www.readbyqxmd.com/read/27884145/estimation-of-the-cool-executive-function-using-frontal-electroencephalogram-signals-in-first-episode-schizophrenia-patients
#12
Yi Yu, Yun Zhao, Yajing Si, Qiongqiong Ren, Wu Ren, Changqin Jing, Hongxing Zhang
BACKGROUND: In schizophrenia, executive dysfunction is the most critical cognitive impairment, and is associated with abnormal neural activities, especially in the frontal lobes. Complexity estimation using electroencephalogram (EEG) recording based on nonlinear dynamics and task performance tests have been widely used to estimate executive dysfunction in schizophrenia. METHODS: The present study estimated the cool executive function based on fractal dimension (FD) values of EEG data recorded from first-episode schizophrenia patients and healthy controls during the performance of three cool executive function tasks, namely, the Trail Making Test-A (TMT-A), Trail Making Test-B (TMT-B), and Tower of Hanoi tasks...
November 25, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/27878078/cool-habitats-support-darker-and-bigger-butterflies-in-australian-tropical-forests
#13
Shuang Xing, Timothy C Bonebrake, Chin Cheung Tang, Evan J Pickett, Wenda Cheng, Sasha E Greenspan, Stephen E Williams, Brett R Scheffers
Morphology mediates the relationship between an organism's body temperature and its environment. Dark organisms, for example, tend to absorb heat more quickly than lighter individuals, which could influence their responses to temperature. Therefore, temperature-related traits such as morphology may affect patterns of species abundance, richness, and community assembly across a broad range of spatial scales. In this study, we examined variation in color lightness and body size within butterfly communities across hot and cool habitats in the tropical woodland-rainforest ecosystems of northeast Queensland, Australia...
November 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27877853/removal-of-b-from-si-by-hf-addition-during-al-si-solvent-refining-process
#14
Yun Lei, Wenhui Ma, Luen Sun, Jijun Wu, Yongnian Dai, Kazuki Morita
A small amount of Hf was employed as a new additive to improve B removal in the electromagnetic solidification refinement of Si with an Al-Si melt, because Hf has a very strong affinity for B. The segregation ratio of Hf between the solid Si and Al-Si melt was estimated to range from 4.9 × 10(-6) to 8.8 × 10(-7) for Al concentrations of 0 to 64 at.%, respectively. The activity coefficient of Hf in solid Si at its infinite dilution was also estimated. A small addition of Hf (<1025 parts per million atoms, ppma) significantly improved the B removal...
2016: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/27876831/persistent-northward-north-atlantic-tropical-cyclone-track-migration-over-the-past-five-centuries
#15
Lisa M Baldini, James U L Baldini, Jim N McElwaine, Amy Benoit Frappier, Yemane Asmerom, Kam-Biu Liu, Keith M Prufer, Harriet E Ridley, Victor Polyak, Douglas J Kennett, Colin G Macpherson, Valorie V Aquino, Jaime Awe, Sebastian F M Breitenbach
Accurately predicting future tropical cyclone risk requires understanding the fundamental controls on tropical cyclone dynamics. Here we present an annually-resolved 450-year reconstruction of western Caribbean tropical cyclone activity developed using a new coupled carbon and oxygen isotope ratio technique in an exceptionally well-dated stalagmite from Belize. Western Caribbean tropical cyclone activity peaked at 1650 A.D., coincident with maximum Little Ice Age cooling, and decreased gradually until the end of the record in 1983...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27872009/molecular-details-on-gilthead-sea-bream-sparus-aurata-sensitivity-to-low-water-temperatures-from-1-h-nmr-metabolomics
#16
Riccardo Melis, Roberta Sanna, Angela Braca, Elia Bonaglini, Roberto Cappuccinelli, Hanno Slawski, Tonina Roggio, Sergio Uzzau, Roberto Anedda
Biometric and metabolic responses of gilthead sea bream to cold challenge are described following a growth trial divided into three water temperature steps, namely cooling, cold maintenance and recovery. Experimental data provide a useful description of fish response to thermal stress at both zootechnical and molecular level. Although no mortality has been observed, Nuclear Magnetic Resonance-based metabolomics confirms the marked sensitivity of this fish species to low water temperature, and explains some key molecular events associated to fish response to cold...
November 18, 2016: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27871121/high-throughput-sequencing-of-viable-microbial-communities-in-raw-pork-subjected-to-a-fast-cooling-process
#17
Chao Yang, You Che, Yan Qi, Peixin Liang, Cunjiang Song
This study aimed to investigate the effect of the fast cooling process on the microbiological community in chilled fresh pork during storage. We established a culture-independent method to study viable microbes in raw pork. Tray-packaged fresh pork and chilled fresh pork were completely spoiled after 18 and 49 d in aseptic bags at 4 °C, respectively. 16S/18S ribosomal RNAs were reverse transcribed to cDNA to characterize the activity of viable bacteria/fungi in the 2 types of pork. Both cDNA and total DNA were analyzed by high-throughput sequencing, which revealed that viable Bacteroides sp...
November 21, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27869548/evaluation-of-a-sprinkler-cooling-system-on-inhalable-dust-and-ammonia-concentrations-in-broiler-chicken-production
#18
S Williams Ischer, M B Farnell, G T Tabler, M Moreira, P T O'Shaughnessy, M W Nonnenmann
Workers are exposed to dust in broiler chicken production during daily work activities. Poultry dust may contain inflammatory agents (e.g., endotoxin) and inhalation exposure has been associated with pulmonary symptoms. Current practice to reduce worker exposure to poultry dust is the use of respiratory protection (e.g., elastomeric face-piece respirator with a P100 and ammonia chemical cartridge). Limited research has been conducted to evaluate engineering controls to reduce dust and ammonia concentrations in broiler chicken production; therefore, the purpose of this research was to evaluate the effectiveness of a water sprinkling system to reduce inhalable dust and ammonia concentrations in a broiler chicken house...
January 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/27868461/a-new-approach-to-feedback-control-of-radiofrequency-ablation-systems-for-large-coagulation-zones
#19
Bing Zhang, Michael A J Moser, Edwin M Zhang, Yigang Luo, Wenjun Zhang
PURPOSE: The purpose of this study was to investigate the feasibility of achieving relatively large coagulation zones (i.e. ≥ 3 cm in diameter) with radiofrequency ablation (RFA) using a broad control system. MATERIALS AND METHODS: A broad control system consists of such information as (i) the area of the tumour tissue for feedback control, (ii) the set-point temperature, and (iii) the control law. The proposed approach has advanced knowledge in (i) and (ii) in particular...
November 21, 2016: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/27862746/a-self-binding-melt-castable-crystalline-organic-electrolyte-for-sodium-ion-conduction
#20
Parameswara Rao Chinnam, Birane Fall, Dmitriy A Dikin, AbdelAziz Jalil, Clifton R Hamilton, Stephanie L Wunder, Michael J Zdilla
The preparation and characterization of the cocrystalline solid-organic sodium ion electrolyte NaClO4 (DMF)3 (DMF=dimethylformamide) is described. The crystal structure of NaClO4 (DMF)3 reveals parallel channels of Na(+) and ClO4(-) ions. Pressed pellets of microcrystalline NaClO4 (DMF)3 exhibit a conductivity of 3×10(-4)  S cm(-1) at room temperature with a low activation barrier to conduction of 25 kJ mol(-1) . SEM revealed thin liquid interfacial contacts between crystalline grains, which promote conductivity...
November 9, 2016: Angewandte Chemie
keyword
keyword
49839
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"