Relevant bibliographies by topics / Hibernation

Academic literature on the topic 'Hibernation'

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Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Hibernation"

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Takamatsu, N., K. Ohba, J. Kondo, N. Kondo, and T. Shiba. "Hibernation-associated gene regulation of plasma proteins with a collagen-like domain in mammalian hibernators." Molecular and Cellular Biology 13, no. 3 (March 1993): 1516–21. http://dx.doi.org/10.1128/mcb.13.3.1516-1521.1993.

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In mammals, hibernation is expressed by only a limited number of species, and the molecular mechanisms underlying hibernation are not well understood. Recently, we have found plasma proteins which disappear from blood specifically during hibernation in a mammalian hibernator, the chipmunk. Here, we report the cDNA cloning of these chipmunk hibernation-related proteins, HP-20, -25, and -27, and analyses of their expression. All three proteins contain a collagen-like domain near the N terminus and are highly homologous to each other. Their mRNAs were detected only in liver in nonhibernating chipmunks, and in hibernating chipmunks, the amounts were reduced to less than 1/10 of those in nonhibernating chipmunks, indicating that HP-20, -25, and -27 mRNA expression is regulated similarly in association with hibernation. Southern blot analyses of the squirrel family with each of chipmunk HP-20, -25, and -27 cDNA revealed that a nonhibernating species (tree squirrel) as well as another hibernating species (ground squirrel) retained the corresponding genes. However, their transcripts were detected only with the hibernating species, and in hibernating ground squirrels, their levels were greatly reduced compared with those in nonhibernating animals, as were the cases with the chipmunk. These observations are the first line of evidence for occurrence of hibernation-associated gene regulation. The results would indicate the commitment of HP-20, -25, and -27 to hibernation and support the idea that genetic controls are involved in mammalian hibernation.
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Takamatsu, N., K. Ohba, J. Kondo, N. Kondo, and T. Shiba. "Hibernation-associated gene regulation of plasma proteins with a collagen-like domain in mammalian hibernators." Molecular and Cellular Biology 13, no. 3 (March 1993): 1516–21. http://dx.doi.org/10.1128/mcb.13.3.1516.

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In mammals, hibernation is expressed by only a limited number of species, and the molecular mechanisms underlying hibernation are not well understood. Recently, we have found plasma proteins which disappear from blood specifically during hibernation in a mammalian hibernator, the chipmunk. Here, we report the cDNA cloning of these chipmunk hibernation-related proteins, HP-20, -25, and -27, and analyses of their expression. All three proteins contain a collagen-like domain near the N terminus and are highly homologous to each other. Their mRNAs were detected only in liver in nonhibernating chipmunks, and in hibernating chipmunks, the amounts were reduced to less than 1/10 of those in nonhibernating chipmunks, indicating that HP-20, -25, and -27 mRNA expression is regulated similarly in association with hibernation. Southern blot analyses of the squirrel family with each of chipmunk HP-20, -25, and -27 cDNA revealed that a nonhibernating species (tree squirrel) as well as another hibernating species (ground squirrel) retained the corresponding genes. However, their transcripts were detected only with the hibernating species, and in hibernating ground squirrels, their levels were greatly reduced compared with those in nonhibernating animals, as were the cases with the chipmunk. These observations are the first line of evidence for occurrence of hibernation-associated gene regulation. The results would indicate the commitment of HP-20, -25, and -27 to hibernation and support the idea that genetic controls are involved in mammalian hibernation.
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Brem, Ethan A., Alyssa D. McNulty, and William J. Israelsen. "Breeding and hibernation of captive meadow jumping mice (Zapus hudsonius)." PLOS ONE 16, no. 5 (May 10, 2021): e0240706. http://dx.doi.org/10.1371/journal.pone.0240706.

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Hibernating mammals exhibit unique metabolic and physiological phenotypes that have potential applications in medicine or spaceflight, yet our understanding of the genetic basis and molecular mechanisms of hibernation is limited. The meadow jumping mouse, a small North American hibernator, exhibits traits–including a short generation time–that would facilitate genetic approaches to hibernation research. Here we report the collection, captive breeding, and laboratory hibernation of meadow jumping mice. Captive breeders in our colony produced a statistically significant excess of male offspring and a large number of all-male and all-female litters. We confirmed that short photoperiod induced pre-hibernation fattening, and cold ambient temperature facilitated entry into hibernation. During pre-hibernation fattening, food consumption exhibited non-linear dependence on both body mass and temperature, such that food consumption was greatest in the heaviest animals at the coldest temperatures. Meadow jumping mice exhibited a strong circadian rhythm of nightly activity that was disrupted during the hibernation interval. We conclude that it is possible to study hibernation phenotypes using captive-bred meadow jumping mice in a laboratory setting.
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Storey, Kenneth B., and David A. Kelly. "Glycolysis and energetics in organs of hibernating mice (Zapus hudsonius)." Canadian Journal of Zoology 73, no. 1 (January 1, 1995): 202–7. http://dx.doi.org/10.1139/z95-023.

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Hibernation-induced changes in the concentrations of glycolytic intermediates, creatine phosphate, and adenylates were monitored in brain and skeletal muscle of the meadow jumping mouse, Zapus hudsonius, after both short (24 h) and long (5 – 7 d) periods of hibernation. Levels of hexose phosphates were greatly reduced in both organs after 24 h of hibernation, suggesting strong suppression of carbohydrate catabolism early in hibernation and indicating enzymatic regulation at the level of carbohydrate input into glycolysis. Both organs showed large changes in energy status during hibernation. Creatine phosphate content declined progressively over time to levels in 5 – 7 d hibernating animals that were 50 and 60% of control values in brain and muscle, respectively. Total adenylates and ATP levels also fell sharply during hibernation, but the net effect of changing adenylate levels on energy charge was minimal; energy charge was 0.94 in both organs of control animals and fell to 0.88 –0.90 in hibernating animals. The overall reduction in the pool sizes of phosphagen and adenylates in organs of hibernating animals may be one factor involved in metabolic suppression during hibernation.
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Taylor, Bernadette, Erika Hanson, Bayan Shaheen, and Scott Cooper. "Changes in plasma angiopoietin-like protein 2 levels and macrophage migration associated with hibernation in thirteen-lined ground squirrels (CAM5P.232)." Journal of Immunology 192, no. 1_Supplement (May 1, 2014): 180.3. http://dx.doi.org/10.4049/jimmunol.192.supp.180.3.

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Abstract Thirteen-lined ground squirrels in the northern United States hibernate from around late September until March. In late summer they gain a substantial amount of fat that is gradually expended as fuel over the course of hibernation. Immune system changes during hibernation include a 90% drop in circulating leukocytes and a reduction in immune responsiveness. Adipose tissue in obese humans is associated with changes in leukocyte migration including macrophage infiltration. This study explored an adipose-associated inflammatory protein, angiopoeitin-like protein 2 (ANGPTL2) as a potential mediator of leukocyte migration in hibernating ground squirrels. Plasma ANGPTL2 in eight ground squirrels was measured by quantitative Western blot at non-hibernating, entering hibernation, hibernating, interbout arousal and post arousal time points. ANGPTL2 levels were higher in hibernation than all other time points and were significantly higher in hibernation compared to interbout arousal or post arousal time points. Macrophages were detected in adipose tissue of hibernating ground squirrels using a ground squirrel macrophage specific monoclonal antibody in immunoperoxidase stained frozen sections. Macrophage-staining in the spleen appeared to be unusually dense in venous sinuses of hibernating compared to non-hibernating squirrels.
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Oro, Daniel, and Lídia Freixas. "Flickering body temperature anticipates criticality in hibernation dynamics." Royal Society Open Science 8, no. 1 (January 13, 2021): 201571. http://dx.doi.org/10.1098/rsos.201571.

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Hibernation has been selected for increasing survival in harsh climatic environments. Seasonal variability in temperature may push the body temperatures of hibernating animals across boundaries of alternative states between euthermic temperature and torpor temperature, typical of either hibernation or summer dormancy. Nowadays, wearable electronics present a promising avenue to assess the occurrence of criticality in physiological systems, such as body temperature fluctuating between attractors of activity and hibernation. For this purpose, we deployed temperature loggers on two hibernating edible dormice for an entire year and under Mediterranean climate conditions. Highly stochastic body temperatures with sudden switches over time allowed us to assess the reliability of statistical leading indicators to anticipate tipping points when approaching a critical transition. Hibernation dynamics showed flickering, a phenomenon occurring when a system rapidly moves back and forth between two alternative attractors preceding the upcoming major regime shift. Flickering of body temperature increased when the system approached bifurcations, which were also anticipated by several metric- and model-based statistical indicators. Nevertheless, some indicators did not show a pattern in their response, which suggests that their performance varies with the dynamics of the biological system studied. Gradual changes in air temperature drove transient between states of hibernation and activity, and also drove hysteresis. For hibernating animals, hysteresis may increase resilience when ending hibernation earlier than the optimal time, which may occur in regions where temperatures are sharply rising, especially during winter. Temporal changes in early indicators of critical transitions in hibernation dynamics may help to understand the effects of climate on evolutionary life histories and the plasticity of hibernating organisms to cope with shortened hibernation due to global warming.
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Sonoyama, Kei, Reiko Fujiwara, Naoki Takemura, Toru Ogasawara, Jun Watanabe, Hiroyuki Ito, and Tatsuya Morita. "Response of Gut Microbiota to Fasting and Hibernation in Syrian Hamsters." Applied and Environmental Microbiology 75, no. 20 (August 21, 2009): 6451–56. http://dx.doi.org/10.1128/aem.00692-09.

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ABSTRACT Although hibernating mammals wake occasionally to eat during torpor, this period represents a state of fasting. Fasting is known to alter the gut microbiota in nonhibernating mammals; therefore, hibernation may also affect the gut microbiota. However, there are few reports of gut microbiota in hibernating mammals. The present study aimed to compare the gut microbiota in hibernating torpid Syrian hamsters with that in active counterparts by using culture-independent analyses. Hamsters were allocated to either torpid, fed active, or fasted active groups. Hibernation was successfully induced by maintaining darkness at 4°C. Flow cytometry analysis of cecal bacteria showed that 96-h fasting reduced the total gut bacteria. This period of fasting also reduced the concentrations of short chain fatty acids in the cecal contents. In contrast, total bacterial numbers and concentrations of short chain fatty acids were unaffected by hibernation. Denaturing gradient gel electrophoresis of PCR-amplified 16S rRNA gene fragments indicated that fasting and hibernation modulated the cecal microbiota. Analysis of 16S rRNA clone library and species-specific real-time quantitative PCR showed that the class Clostridia predominated in both active and torpid hamsters and that populations of Akkermansia muciniphila, a mucin degrader, were increased by fasting but not by hibernation. From these results, we conclude that the gut microbiota responds differently to fasting and hibernation in Syrian hamsters.
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Kim, MW, DH Jeong, and SC Yeon. "Hibernation behaviour and ethogram of captive Asiatic black bear (Ursus thibetanus)." Veterinární Medicína 65, No. 1 (January 29, 2020): 1–7. http://dx.doi.org/10.17221/135/2019-vetmed.

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This study was undertaken to create an Asiatic black bear (Ursus thibetanus; ABB) ethogram during hibernation and to describe the time budget of hibernating behaviours in ABB. Seven captive adult ABB were included in the study and began hibernation between October and December. Data were collected for three consecutive years (2013–2015) during ABB hibernation (total 169 days) using closed-circuit television. During the study, we observed 21 distinct behaviours in hibernating ABB (4 least active and 17 active behaviours). Five bears started hibernation less than seven days after feeding cessation, and by the end of one week, all bears hibernated. The most commonly observed behaviour was “sleep curling inside nest”, and “nest maintenance” was the second most common behaviour. Among the active behaviours, “sitting in the nest”, “change stance”, “drinking and eating” were mostly shown as documented during the observation times. Our results provide new insights into the hibernating behaviours of ABB.
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Wermundsen, Terhi, and Yrjö Siivonen. "Seasonal variation in use of winter roosts by five bat species in south-east Finland." Open Life Sciences 5, no. 2 (April 1, 2010): 262–73. http://dx.doi.org/10.2478/s11535-009-0063-8.

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AbstractWe studied seasonal variation in the use of winter roosts by five bat species (Eptesicus nilssonii, Myotis brandtii/mystacinus, Myotis daubentonii and Plecotus auritus) in south-east Finland during the winters of 2003/2004 and 2004/2005. At the beginning of the bat hibernation season all species used higher temperatures and humidity than by the season’s end. Hibernacula were at their coldest in mid-hibernation season and became warmer towards the end of the season. However, no species hibernated in warmer locations at the end of the season than in mid-season. Results suggest that bats tend to use different strategies throughout the hibernation season, minimizing the cost of hibernation early in the season by hibernating in warmer locations and minimizing energy expenditure later in the season by hibernating in colder locations. M. brandtii/mystacinus were found in locations with stable temperature and humidity, moving to increasingly stable conditions (chambers, crevices, clusters, ceiling) towards spring. All other species hibernated in more variable microclimates throughout the hibernation season.
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McInerney, Emma P., Aimee J. Silla, and Phillip G. Byrne. "Carotenoid supplementation affects the post-hibernation performance of southern corroboree frogs." Behaviour 157, no. 2 (February 6, 2020): 121–42. http://dx.doi.org/10.1163/1568539x-00003584.

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Abstract Many animals hibernate to survive winter conditions, however, arousal from hibernation generates reactive oxygen species (ROS) that can cause oxidative stress. Dietary antioxidants, like carotenoids, may reduce oxidative stress during arousal from hibernation, and assist with post-hibernation recovery and performance. We tested the effect of carotenoid supplementation on exercise performance (escape-response and activity) in southern corroboree frogs (Pseudophryne corroboree) following initial arousal from hibernation (24–48 h post-arousal) and post-recovery (six weeks post-hibernation). Carotenoids did not affect performance following initial arousal. However, carotenoids improved escape-response six weeks post-hibernation, with carotenoid-supplemented frogs hopping faster and further in their first hop than unsupplemented frogs. Carotenoids also affected post-recovery activity, with carotenoid-supplemented frogs being less mobile than unsupplemented frogs. Carotenoids may affect post-hibernation performance by reducing oxidative stress or by increasing diet quality. Our study provides novel evidence for an effect of carotenoids on performance post-hibernation and highlights the importance of nutrition to hibernating organisms.
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Dissertations / Theses on the topic "Hibernation"

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Ayers, Amy L. "Windows hibernation and memory forensics." Thesis, Utica College, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1586690.

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ABSTRACT The purpose of this capstone project was to research the hibernation file, its role in memory forensics and to explore current technology, techniques and concepts for analysis. This study includes an in-depth look at the Windows hibernation feature, file format, potential evidence saved to the file and its impacts in digital forensic investigations. This research was performed to demonstrate the importance of the hibernation file and to generate awareness for this forensic artifact. The research questions presented were designed to identify the properties of Windows hibernation and its significance in digital forensics. Additionally, these research questions were aimed at identifying the important concepts analysts should understand in selecting forensic software and in hibernation analysis. Through the literature review process, the hibernation file was identified as an essential part of digital forensics which provides analysts with snapshots of system memory from various points in the past. This data includes web, email and chat sessions in addition to running processes, login credentials, encryption keys, program data and much more. Beyond forensics, the hibernation file is useful in the fields of data recovery and incident response. A review of current hibernation file publications revealed incomplete and conflicting works culminating in the acknowledgment that more research is needed in order to close these research gaps. More awareness for hibernation forensics through its inclusion in future published works and in computer forensic educational courses is recommended. These inclusions will assist to arm practitioners with the ability to accurately utilize the hibernation file in order to obtain the highest quality forensic evidence. Keywords: Cybersecurity, hiberfil.sys, hybrid sleep, malware, slack space, Albert Orbinati.

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Seger, Rita Logan. "Elucidating the Mechanism for Maintaining Eucalcemia Despite Immobility and Anuria in the Hibernating Black Bear (Ursus americanus)." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/SegerRL2008.pdf.

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Al-Mohammad, Abdallah. "Hibernating myocardium : prevalence and surrogate markers." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=235453.

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The aims of this thesis are to determine: 1. The true prevalence of hibernating myocardium in patients with severely impaired left ventricular contraction. (Chapter 3) 2. The viability status of the left ventricular wall aneurysm as defined by positron emission tomography. (Chapter 4) 3. The relationship between the incidence of hibernating myocardium and the coronary artery flow grade determined angiographically. (Chapter 5) 4. The relationship between the presence of Q waves (with or without preserved R wave) on the surface electrocardiogram and the presence of scar in the myocardium as diagnosed by positron emission tomography. (Chapter 6) 5. The relationship between the incidence of hibernating myocardium and QT dispersion on the surface electrocardiogram. (Chapter 7) 6. Looking for other markers of hibernation by PET. (Chapters 8 and 9) I proposed to look at the relationship between continuing metabolic activity in 10 akinetic or severely hypokinetic segments as an alternative method and thus as a new definition of pre-operative determination of hibernating myocardium. This is the topic in Chapter 8. Following the completion of question number 3, and the observed role of collateral circulation, I proposed to look into the role of TIMI 0-1 and collaterals grade 2-3 in maintaining viability and their role as a marker of hibernating myocardium. This won support in the form of a research grant from the British Heart Foundation in 1998. This was the topic of my last project, which was added to the thesis after its initial completion on the 23rd of December 2000. This is the topic of Chapter 9. 7. Following the delayed submission of the Thesis in 2015, I was asked to add Chapter 11 which summarised both my contribution since the Thesis was concluded into the topic of Hibernating myocardium; and the knowledge progression into the detection of the phenomenon and its clinical usefulness to bring the Thesis up to date. Methods: The patients were those with coronary artery disease and impaired left ventricular contraction recruited into a series of studies of the presence of hibernating myocardium using positron emission tomography, as the method of choice to preoperatively detect this phenomenon. The patients were either recruited from the cardiac catheterization laboratory or from the cohort of patients presenting with myocardial infarction to the cardiology unit at Aberdeen Royal Infirmary. All the studies were approved by the Grampian Research Ethics Committee. In some of the studies, cardiac magnetic resonance imaging was used for simple assessment of the myocardial contraction and thickening in the study reported in Chapter 9. Results and Conclusions: 1.   Hiberanting myocardium affects over 50% of the patients with severe left ventricular systolic impairment with coronary artery disease. (Chapter 3).   2.   None of the aneurysmal segments are viable. (Chapter 4)   3.   Compared to the areas supplied by arteries with Thrpmbolysis In Myocardial Infarction (TIMI) flow grades 2-3, the areas supplied by almost occluded coronary arteries (TIMI 0-1 flow grades) are significantly more likely to have both evidence of scarred myocardium (highly significantly statistical difference p < 0.0001) and evidence of hibernating myocardium, just reaching statistical significance (p < 0.05). (Chapter 5)   4.   The specificity of Q waves on the electrocardiogram (ECG) as markers for 11 myocardial scarring is 79%, with a low sensitivity of 41%. (Chapter 6) 5.   Maintaining R waves following a pathological Q wave on the ECG is not helpful for predicting the presence of hibernating myocardium. (Chapter 6) 6.   The presence or absence of hibernating myocardium did not impact on native QT dispersion, rate corrected QTc dispersion or on the maximum adjacent QT dispersion on the ECG. (Chapter 7). 7.   A new definition of hibernating myocardium is proposed, helping to detect it preoperatively through the demonstration of metabolism – mechanical mismatch defect using a single radio-pharmaceutical. (Chapter 8) 8.   As a marker of the classical perfusion –metabolism mismatch defect, the new proposed metabolism-mechanical mismatch defect by PET is sensitive (92%) and specific (97%), with excellent positive and negative predictive accuracies (96% and 93%, respectively). (Chapter 8) 9.   While collaterals grade 2-3 supplying territories with blocked arteries and flow grades TIMI 0-1 may be sensitive markers (83%) of hibernating myocardium; they lack specificity (20%), and the differences between the two small groups completing the study did not reach statistical significance. (Chapter 9).
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Sanders, Colin E. "Quiescent states of sleep, torpor and hibernation in the." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2331.

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Brazilian tegus (Tupinambis merianae) were instrumented with telemetry encoder implants that measured and broadcast heart rate (HR), breathing rate (fR), and deep body temperature (Tb) and were then allowed to freely roam in outdoor enclosures mimicking their natural environment for a full year (2004) in order to monitor the circadian and circannual patterns in behaviour and cardio-respiratory physiology. The year was divided up into 5 seasons based upon the physiology and behaviour of the tegus: early activity season (Sept.-Nov.), late activity season (Dec.-Feb.), entrance into hibernation (March-April), hibernation (May-July), and arousal from hibernation (August). The activity seasons were characterized by warm weather with frequent rainfall which slowly decreased in temperature and precipitation as tegus started entering hibernation so that the end of the dormant season was marked by dry, cold weather. Tegus in the early activity season demonstrated high activity associated with breeding demands, displayed elevated HR and fR, and were able to maintain a large temperature differential (4-7°C) between deep body temperature (Tb) and their respective burrow (Tburrow) during sleep. As the season progressed into late activity season, average Tb remained constant but average HR and fR progressively declined indicating nightly torpor. Periods of inactivity during the active seasons were rare and associated with inclement weather. Tegus entered hibernation through bouts of inactivity that progressively increased in frequency and duration. During this time, Tb was regulated but declined at different rates in regards to daytime and nighttime values. Heart rate through the entrance into hibernation and hibernation periods frequently demonstrated arrhythmias that increased in duration but decreased with frequency as hibernation progressed. Through hibernation, Tb continued to decline for the first month but HR and fR were constant, demonstrating a temperature independent suppression of metabolism. Through the hibernation season tegus sporadically aroused and emerged from their burrows to warm up and after a short basking period would return to the burrows and swiftly resume hibernation. While hibernating, heart rate was characteristically regular but breathing was sporadic orepisodic. Arousals became more frequent towards the end of hibernation so that when they entered arousal from hibernation season most tegus were emerging daily. At this time daily maximum deep body temperature (Tbmax) swiftly returned to active season values but nighttime daily minimum deep body temperature (Tbmirt) values only showed a gradual increase through August, indicating different body temperature set points (Tbset) for active and sleep states. Changes in heart rate and breathing rate during the year showed greatest correlation with changes in photoperiod, although throughout hibernation HR and fR also showed tight correlation with Tb.
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Guillot, Patricia. "La biochimie de l'hibernation chez les mammifères." Paris 5, 1989. http://www.theses.fr/1989PA05P112.

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Valek, Anton. "Hibernation of public space - an investigation of Stockholms water environment." Thesis, KTH, Arkitektur, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298828.

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The project stems from a will to understand how I, as both a citizen and architect can partake in the creation and activation of the public water environment of Stockholm, a public sphere that I argue is largely in a state of hibernation. The main proposal is a multifunctional boat storage located at Pålsundet on Långholmen. With it I try to re-imagine the 25 hectares of centrally located plots designated to the winter storage of boats. The building strives to be an example of how to create a win-win solution where these plots could again become prime public space and year round meeting places whilst enhancing the cultural and social aspects of boat culture to more people.
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Sueldo, Rolando. "Évolution de paramètres caractéristiques de la physiologie de l'eau lors de la dormance et de sa levée dans les tubercules de stachys sieboldi, MIQ. Et de helianthus tuberosus. Relations avec le métabolisme lipidique chez hélianthus." Clermont-Ferrand 2, 1990. http://www.theses.fr/1990CLF21234.

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L'etude des parametres hydriques chez le topinambour pendant la dormance et sa levee a permis de mettre en evidence un role de l'eau dans ces deux processus physiologiques. Cette etude met en evidence qu'il y a des transfert d'eau dans les tubercules. Ces transferts apparaissent a des moments bien precis lors du stockage de ces tubercules. Ces mouvement d'eau jouer un role important dans la mise en place de la croissance tuberisee ou longue. Ces mouvements d'eau peuvent etre lies a des modifications des membranes et du protoplasme cellulaire. L'etude des modifications des moleculaires phosphorylees apporte des renseignements supplementaires sur les processus qui induisent la resistance au froid et/ou la levee de dormance. Il ressort que ces processus commencent tres tot et que les variations du phosphore lipidique et du phosphore soluble dans un milieu acide, de la region sous-apicale, peuvent servir comme marqueurs de la levee de dormance physiologique. Il faut aussi signaler que les sterols doivent jouer un role tres important dans la levee de dormance, en ce qui concerne les mouvements d'eau, de metabolistes et eventuellement dans des modifications des flux de ca#2#+ transmembranaires. Les etudes qui ont ete realisees sur le plasmalemme pendant la levee de dormance (activite de l'atpase, composition en phospholipides et fluidite) permettent de dire que le plasmalemme se reorganise durant cette periode, ce qui lui fait acquerir de nouvelles proprietes morphogenetiques
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MacDonald, Justin Anthony. "Enzyme thermal adaptations and signal transduction involvement in ground squirrel hibernation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ32342.pdf.

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Charge, T. Dic, and University of Lethbridge Faculty of Arts and Science. "Hibernation biology of Richardson's ground squirrels : hibernaculum systems and energy utilization." Thesis, Lethbridge, Alta. : University of Lethbridge. Faculty of Arts and Science, 2001, 2001. http://hdl.handle.net/10133/151.

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I studied free-living Richardson's ground squirrels (Spermophilus richardsonii) using telemetry and total body electrical conductivity (TOBEC) to evaluate overwinter energy utilization and the impact of seed caching on body composition of males. I excavated 51 hibernation systems and found that 66% of 35 males cached 1 to 4 species of seed in the hivernaculum. Pre-emergent euthermy was shorter for 3 non-caching (0.7 = 0.2 days) than for 13 caching males (4.0 = 2.8 days), and metabolic predictions of overwinter mass loss approximated actual loss for non-caching males, but over-estimated mass loss for caching males. I concluded that caching males recouped some of the mass lost during hibernation by eating the cache during the longer period of pre-emergence euthermy. Based on TOBEC, the recouped mass included both fat and lean tissue. I suggest that caching in one year is a cost of reproduction that offsets the energetic demands of mating the following year.
xii, 139 leaves : ill. ; 28 cm.
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Saitongdee, Porncharn. "Cardiovascular changes during and after arousal from hibernation in golden hamsters." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392885.

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Books on the topic "Hibernation"

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Nelson, Robin. Hibernation. Minneapolis: Lerner, 2010.

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Ganeri, Anita. Hibernation. Chicago, Ill: Heinemann Library, 2005.

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Paul, Bennett. Hibernation. New York: Thomson Learning, 1995.

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Scrace, Carolyn. Hibernation. New York: F. Watts, 2002.

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Berger, Melvin. Hibernación =: Hibernation. New York: Scholastic, 2006.

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ill, Kubo Hidekazu, ed. Insect hibernation. Milwaukee: Raintree Publishers, 1986.

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ill, Cyrus Kurt, ed. Hibernation station. New York: Simon and Schuster Books for Young Readers, 2010.

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Mebane, Jeanie. Animal hibernation. Mankato, MN: Capstone Press, 2013.

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Meadows, Michelle. Hibernation station. New York: Simon and Schuster Books for Young Readers, 2010.

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Kelly, John. Hibernation Hotel. Wilton, Connecticut: Tiger Tales, 2017.

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Book chapters on the topic "Hibernation"

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Reinhardt, Kathleen D. "Hibernation." In Encyclopedia of Animal Cognition and Behavior, 3112–17. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_231.

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Reinhardt, Kathleen D. "Hibernation." In Encyclopedia of Animal Cognition and Behavior, 1–5. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47829-6_231-1.

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Metze, Dieter, Vanessa F. Cury, Ricardo S. Gomez, Luiz Marco, Dror Robinson, Eitan Melamed, Alexander K. C. Leung, et al. "Hibernation." In Encyclopedia of Molecular Mechanisms of Disease, 839–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_807.

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Dayal, Divya, and Neelabh. "Hibernation." In Encyclopedia of Sexual Psychology and Behavior, 1–3. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-08956-5_242-1.

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Cokkinos, Dennis V. "Myocardial Hibernation." In Myocardial Preservation, 185–202. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-98186-4_10.

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Schipke, J. D. "Myocardial hibernation." In New Paradigms of Coronary Artery Disease, 27–29. Heidelberg: Steinkopff, 1996. http://dx.doi.org/10.1007/978-3-642-53793-6_8.

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Storey, Kenneth B. "Mammalian Hibernation." In Advances in Experimental Medicine and Biology, 21–38. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4419-8997-0_3.

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Suomalainen, Paavo. "Hibernation and Sleep." In Ciba Foundation Symposium - The Nature of Sleep, 307–21. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470719220.ch14.

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Eklöf, Johan, and Jens Rydell. "Hibernation and Migration." In Bats, 99–112. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66538-2_7.

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Gaudiani, Jennifer L. "Going into Hibernation." In Sick Enough, 19–34. New York, NY : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351184731-4.

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Conference papers on the topic "Hibernation"

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Naylor, T. "Alternatives to Hibernation." In CLASSICAL NOVA EXPLOSIONS: International Conference on Classical Nova Explosions. AIP, 2002. http://dx.doi.org/10.1063/1.1518171.

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West, John L., Andrea Accomazzo, Arthur B. Chmielewski, and Paolo Ferri. "Space mission hibernation mode design: Lessons learned from Rosetta and other pathfinding missions using hibernation." In 2018 IEEE Aerospace Conference. IEEE, 2018. http://dx.doi.org/10.1109/aero.2018.8396812.

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Park, Minho, Daewoong Hwang, and Jiman Hong. "Incremental Hibernation for Baseboard Management Controllers." In RACS '23: International Conference on Research in Adaptive and Convergent Systems. New York, NY, USA: ACM, 2023. http://dx.doi.org/10.1145/3599957.3606223.

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Teylo, Luan, Lucia M. A. Drummond, Luciana Arantes, and Pierre Sens. "Escalonamento de Aplicações em Instâncias Preemptivas Sujeitas a Falhas Temporais." In XX Workshop de Testes e Tolerância a Falhas. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/wtf.2019.7710.

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By contracting Virtual Machines on Amazon EC2, the user can opt for on-demand instances, which have high availability, or instances spot (preemptive), which are idle resources offered at a lower price, whose availability may vary throughout the run. Despite the economic advantage, if the demand for resources increases, the preemptive instances can be revoked by the provider without warning, and put in hibernation until the demand decreases. This work presents initial results and the formulation of the scheduling problem which considers hibernation-prone preemptive instances to minimize the monetary cost of execution.
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Teylo, Luan, Luciana Arantes, Pierre Sens, and Lúcia Maria de A. Drummond. "A Hibernation Aware Dynamic Scheduler for Cloud Environments." In ICPP 2019: Workshops. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3339186.3339205.

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Mrdovic, Sasa, and Alvin Huseinovic. "Forensic analysis of encrypted volumes using hibernation file." In 2011 19th Telecommunications Forum Telfor (TELFOR). IEEE, 2011. http://dx.doi.org/10.1109/telfor.2011.6143785.

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Safdar, Sohail, Mohd Fadzil Hassan, Muhammad Aasim Qureshi, and Rehan Akbar. "Data hibernation framework in workflows under intrusion threat." In Informatics (ISCI). IEEE, 2011. http://dx.doi.org/10.1109/isci.2011.5958998.

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Kim, Ajung, Jaehoon An, Younghwan Kim, and Jiman Hong. "Hibernation Based Hybrid Booting for Baseboard Management Controller." In 2022 International Conference on Computational Science and Computational Intelligence (CSCI). IEEE, 2022. http://dx.doi.org/10.1109/csci58124.2022.00107.

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Iles, Tinen L., Timothy G. Laske, David L. Garshelis, Lars Mattison, Brian Lee, Val Eisele, Erik Gaasedelen, and Paul A. Iaizzo. "Medtronic Reveal LINQ™ Devices Provide Better Understanding of Hibernation Physiology in the American Black Bear (Ursus Americanus)." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3498.

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The American black bear (Ursus americanus) has been called a metabolic marvel6. In northern Minnesota, where we have conducted long-term physiological and ecological studies of this species, bears may remain in their winter dens for 6 months or more without eating, drinking, urinating or defecating and yet lose very little muscle mass2. We also found that hibernating black bears elicit asystolic events of over 30 seconds and experience an exaggerated respiratory sinus arrhythmia2. In this previous work we employed Medtronic Reveal® XT devices that required us to visit the den and temporarily extract the bear (under anesthesia) to download the stored data.4 Here we describe Medtronic’s latest generation of Insertable Cardiac Monitor (ICM), the Reveal LINQ™, which enables continuous transmission of data via a relay station from the den site3. Black bear hibernation physiology remains of high interest because of the multiple potential applications to human medicine. ICMs have been used for nearly two decades by clinicians as a critical diagnostic tool to assess the nature of cardiac arrhythmias in humans. Such devices are primarily implanted subcutaneously to record electrocardiograms. The device size, battery life and transmission capabilities have evolved in recent years. The first devices were relatively large and a programmer was needed to retrieve information during each clinical (or in our case, den visit). These devices were programmed to capture cardiac incidents such as asystolic events, arrhythmias and tachycardias and apply algorithms that ensure proper data collection: e.g. ectopy rejection and p-wave presence algorithms. The new generation Reveal LINQ was made to telemetrically transmit heart data from human patients, but we needed to develop a system to enable transmission from bear dens, which are remote (cannot easily be checked and adjusted) and are subject to extreme winter weather conditions. Besides the advantage of these devices transmitting data automatically, they are considerably smaller and thus less prone to rejection by the extraordinary immune system of the hibernating bear1.
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Tynan, Richard, G. M. P. O'Hare, and Michael J. O'Grady. "Maintaining WSN QoS by brokering hibernation decisions through mediation." In 2010 International Conference on Distributed Computing in Sensor Systems Workshops (DCOSSW 2010). IEEE, 2010. http://dx.doi.org/10.1109/dcossw.2010.5593275.

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Reports on the topic "Hibernation"

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Martin, Sandra L., and Hannah V. Carey. Translating the Hibernation Phenotype to Human Trauma Care. Fort Belvoir, VA: Defense Technical Information Center, September 2008. http://dx.doi.org/10.21236/ada500737.

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Oeltgen, Peter R. Characterization of an Opioid-Like Hibernation Induction Trigger. Fort Belvoir, VA: Defense Technical Information Center, November 1990. http://dx.doi.org/10.21236/ada233741.

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Carey, Hannah V. The Adaptive Response to Intestinal Oxidative Stress in Mammalian Hibernation. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada442363.

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Beilman, Greg. Hibernation-Based Therapy to Improve Survival of Severe Blood Loss. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada612549.

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Beilman, Greg. Hibernation-Based Therapy to Improve Survival of Severe Blood Loss. Fort Belvoir, VA: Defense Technical Information Center, October 2014. http://dx.doi.org/10.21236/ada612890.

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Beilman, Greg, Kristine Mulier, and Kristin Pokorny. Hibernation-Based Therapy to Improve Survival of Severe Blood Loss. Fort Belvoir, VA: Defense Technical Information Center, October 2013. http://dx.doi.org/10.21236/ada613595.

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Oeltgen, Peter R. Neuroprotective Effects of Opioid-Like Hibernation Factors in Cerebral Ischemia. Fort Belvoir, VA: Defense Technical Information Center, March 2004. http://dx.doi.org/10.21236/ada424443.

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Stratton, Kalera. The Influence of Hibernation Temperature on Deiodinase 2 in Red-Sided Garter Snakes (Thamnophis sirtalis parietalis). Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6741.

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Andrews, Matthew T. Monitoring Low Temperature Physiology in Hibernating Mammals. Fort Belvoir, VA: Defense Technical Information Center, December 2000. http://dx.doi.org/10.21236/ada392139.

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Andrews, Matthew T. DURIP: Monitoring Low Temperature Physiology in Hibernating Mammals. Fort Belvoir, VA: Defense Technical Information Center, January 2001. http://dx.doi.org/10.21236/ada394822.

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