Academic literature on the topic 'Horse heart'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Horse heart.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Horse heart"
1
Fejsáková, Magdaléna, Jana Kottferová, Zuzana Dankulincová, Eva Haladová, Raquel Matos, and Igor Miňo. "Some possible factors affecting horse welfare assessment." Acta Veterinaria Brno 82, no. 4 (2013): 447–51. http://dx.doi.org/10.2754/avb201382040447.
Full textAbstract:
The aim of this study was to assess the influence of various stimuli that confound interpretation of assessed indicators of horse welfare during rest and working period by the use of non-invasive methods of sampling. In total, 40 horses of different breeds and used for different purposes in Slovakia were used. The following indicators were tested: concentration of cortisol in saliva and 11,17-dioxoandrostanes in faeces measured by Elisa methods, heart rate and heart rate variability recording with the Polar Heart Rate Monitor and presence of stereotypical behaviour assessed with a horse questionnaire survey. The evaluated physiological responses were mostly affected by the type of work undertaken, especially horse movement intensity (P < 0.001) and horse equipment used during the working period (P < 0.01). Horses that showed stereotypical behaviour were less stressed during rest (P < 0.05) compared to horses without stereotypical behaviour. Horse breed, age, sex and stabling conditions affected only some of the heart rate indicators. The type of riding style had no fundamental influence on evaluated indicators. These observations highlight the difficulties in determining the welfare status in horses, since measurements can be affected by many factors that need to be investigated for achieving relevant outcomes. This is the first study in Slovakia focusing on the evaluation of horse welfare by non-invasive sampling.
2
Abbott, Gabrielle, Kathi Jogan, Erin L. Oberhaus, Jason Apple, and Charles Rosenkrans. "19 Comparing stress indicators of horses used for therapy in riding activities and groundwork activities." Journal of Animal Science 98, Supplement_2 (November 1, 2020): 36–37. http://dx.doi.org/10.1093/jas/skz397.083.
Full textAbstract:
Abstract Equine therapy is used to assist people suffering from various physical and mental disabilities. Equine-assisted activities and therapies (EAAT) include therapeutic riding and hippotherapy. Our objective was to determine the effects of EAAT on horse heart rate, respiration rate, temperature, and serum cortisol. Horses (n = 7) were assigned to activity type (groundwork or riding) in a Latin square design in which all horses performed both activities twice. Heart rate, respiration rate, rectal temperature, and serum cortisol concentrations were determined at 15 minutes before, and 15, 45, and 75 minutes after activity was initiated. Pearson correlations revealed that cortisol was not correlated (r < 0.12; P > 0.22) with heart rate, respiration rate, or rectal temperature. Heart rate was correlated (P < 0.05) with respiration rate (r = 0.77) and body temperature (r = 0.2); and body temperature was correlated with respiration rate (r = 0.21; P < 0.05). Analysis of variance was performed with horse within date as the experimental unit, main effects of activity type, horse, date, experimental time, and interactions. Serum concentrations of cortisol (varied from 2.8 to 89.7 ng/mL) and body temperature (37.4 ± 0.06) were affected (P < 0.01) by an interaction between experimental time and horse. Heart rate (61 ± 2.1) and respiration rate (30 ± 1.4) were affected (P < 0.01) by interactions between experimental time and horse; and experimental time and activity type. Our results demonstrate that equine athletes serving in EAAT programs have altered physiological responses depending on the horse, type of activity, and length of time performing the task. Based on our results, cortisol concentrations are not the best indicator of a horse’s response to EAAT work, and we recommend that trainers monitor horses’ heart and respiration rates as an indicator of horse well-being while working with patients.
3
Abbott, Gabrielle, Kathi Jogan, Erin L. Oberhaus, Jason Apple, and Charles Rosenkrans. "18 Comparing stress indicators of horses used for therapy in riding activities and groundwork activities." Journal of Animal Science 98, Supplement_2 (November 1, 2020): 83. http://dx.doi.org/10.1093/jas/skz397.195.
Full textAbstract:
Abstract Equine therapy is used to assist people suffering from various physical and mental disabilities. Equine-assisted activities and therapies (EAAT) include therapeutic riding and hippotherapy. Our objective was to determine the effects of EAAT on horse heart rate, respiration rate, temperature, and serum cortisol. Horses (n = 7) were assigned to activity type (groundwork or riding) in a Latin square design in which all horses performed both activities twice. Heart rate, respiration rate, rectal temperature, and serum cortisol concentrations were determined at 15 minutes before, and 15, 45, and 75 minutes after activity was initiated. Pearson correlations revealed that cortisol was not correlated (r < 0.12; P > 0.22) with heart rate, respiration rate, or rectal temperature. Heart rate was correlated (P < 0.05) with respiration rate (r = 0.77) and body temperature (r = 0.2); and body temperature was correlated with respiration rate (r = 0.21; P < 0.05). Analysis of variance was performed with horse within date as the experimental unit, main effects of activity type, horse, date, experimental time, and interactions. Serum concentrations of cortisol (varied from 2.8 to 89.7 ng/mL) and body temperature (37.4 ± 0.06) were affected (P < 0.01) by an interaction between experimental time and horse. Heart rate (61 ± 2.1) and respiration rate (30 ± 1.4) were affected (P < 0.01) by interactions between experimental time and horse; and experimental time and activity type. Our results demonstrate that equine athletes serving in EAAT programs have altered physiological responses depending on the horse, type of activity, and length of time performing the task. Based on our results, cortisol concentrations are not the best indicator of a horse’s response to EAAT work, and we recommend that trainers monitor horses’ heart and respiration rates as an indicator of horse well-being while working with patients.
4
Naber, Anna, Lena Kreuzer, Roswitha Zink, Eva Millesi, Rupert Palme, Karin Hediger, and Lisa Maria Glenk. "Heart rate, heart rate variability and salivary cortisol as indicators of arousal and synchrony in clients with intellectual disability, horses and therapist during equine-assisted interventions." Pet Behaviour Science, no. 7 (April 10, 2019): 17–23. http://dx.doi.org/10.21071/pbs.v0i7.11801.
Full textAbstract:
The aim of the study was to analyse interaction processes in equine-assisted therapy (EAT) sessions with ten female clients in the period of emerging adulthood with intellectual disability (ID). Heart rate (HR), heart rate variability and salivary cortisol levels have been analysed in humans and horses before, during and after a standardised therapy session as well as in a control condition. There was a trend of lower cortisol levels and higher variability and parasympathetic tone induced by horses. During challenge however, there was a significant lower HR in the horse condition. Significant correlations in heart rate between therapist, client and horse were found with stronger interaction with a familiar horse. Our findings suggest that EAT may effectively modulate stress in humans with ID. Our results further elucidate synchronisation patterns in HR highlighting the pivotal role of relationship quality and intensity as modulators of synchrony.
5
Gonzalez, Maria F., Karina Fresneda, and Francisco Carvallo. "Disseminated acanthamoebiasis in a horse." Brazilian Journal of Veterinary Pathology 13, no. 3 (November 26, 2020): 592–96. http://dx.doi.org/10.24070/bjvp.1983-0246.v13i3p592-596.
Full textAbstract:
Amoebic infections have been described in humans and animals, causing lesions in specific organs or as systemic infections. In both animals and humans, immunocompromised patients are predisposed to the infection. The present report described the macroscopic and histologic findings in a Quarter horse filly who presented with a systemic infection caused by Acanthamoeba spp. that was characterized by multinodular lesions in lung, kidney, heart, submandibular lymph node, and lip. Histopathology revealed dense inflammatory infiltrates composed of neutrophils, histiocytes, occasional multinucleated giant cells, and numerous intralesional trophozoites. Immunohistochemistry was positive for Acanthamoeba spp trophozoites in lungs, kidneys, heart, submandibular lymph node, and lip. No predisposing conditions were identified.
6
Ayala, María Dolores, Andrea Carrillo, Pilar Iniesta, and Pedro Ferrer. "Pilot Study of the Influence of Equine Assisted Therapy on Physiological and Behavioral Parameters Related to Welfare of Horses and Patients." Animals 11, no. 12 (December 10, 2021): 3527. http://dx.doi.org/10.3390/ani11123527.
Full textAbstract:
Different welfare indicators were studied in three patients with psychomotor alterations and in two horses throughout 9–10 equine assisted therapy sessions in each patient. In horses, heart and respiratory rates, blood pressure, temperature and behavioral signs were studied. In patients, heart rate, oxygen saturation, temperature, sleep quality, psychomotor and emotional parameters were analyzed. Data collection was recorded in the anticipatory phase (15 min before the start of the session), two interaction phases (after 30 min of horse-patient interaction on the ground and on horseback, respectively) and the recovery phase (15 min after the end of the session). During the anticipatory phase, most of physiological parameters of patients and horses and the stress behavioral signs of horses increased, followed by a relaxing phase during the horse-patient interaction on the ground. In horse-patient riding phase the heart and respiratory rates of the horses again increased. These results showed that the horses did not seem to suffer stress attributable to the therapy sessions, but only an increase in their parameters associated with activity and external stimuli. The patients improved their gross and fine motor skills, their cognitive and perceptual-sensitive parameters and it led to an improvement in the life quality of their families.
7
Skene, C. "Non-haemorrhagic cardiac tamponade caused by a horse kick." Heart 89, no. 3 (March 1, 2003): 330. http://dx.doi.org/10.1136/heart.89.3.330.
Full text
8
Kubištová, Barbora, and Iva Jiskrová. "Some Effects on the Performance of the Czech Warm‑Blood Horse in the Horse Breeding Station (ŠCHK) – Měník." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 65, no. 5 (2017): 1537–42. http://dx.doi.org/10.11118/actaun201765051537.
Full textAbstract:
Using the Excel programme a database was created of 332 horses born at the horse breeding station (ŠCHK) – Měník after 1 August 1993. The database was transferred to the Unistat 6.5 programme and by means of the linear model GLM evaluated were some effects on horse performance in the horse breeding station (ŠCHK) – Měník. For the evaluation of breeding activities we selected a few important effects on the herd, i.e. sex, father (line), mother (family) and year of birth. For each horse of the database we identified the basic measurements, results from the score on entry into the studbook and performance tests. The database included a total of 15 homogeneous families and their numerous offspring. The following stallions influenced the herd: 366 Taarlo, 616 Erudit, 2626 Sahib Kubišta, 525 Tarlo Kubišta, 1004 First Bride, 2805 Le Patron, 630 Przedswit Makebo, 1028 Manillon Rouge and 2640 Radegast. Rating based on the variable score on entry into the studbook and the basic performance test was statistically the highest in 1994. In dependence on the basic performance test the rating of stallion 1028 Manillon Rouge was the highest with an average of 7.8 scores. The families Forma and Gama S reached the statistically significantly highest scores for the dependent variables of the testing rearing house and heart girth. The mares have a statistically significantly larger heart girth than the stallions. Stallion 2640 Radegast had a bone diameter of 22 cm which was statistically significantly the highest rating; stallion 616 Erudit had the lowest rating.
9
Finley, Melissa R., Yan Li, Fei Hua, James Lillich, Kathy E. Mitchell, Suhasini Ganta, Robert F. Gilmour, and Lisa C. Freeman. "Expression and coassociation of ERG1, KCNQ1, and KCNE1 potassium channel proteins in horse heart." American Journal of Physiology-Heart and Circulatory Physiology 283, no. 1 (July 1, 2002): H126—H138. http://dx.doi.org/10.1152/ajpheart.00622.2001.
Full textAbstract:
In dogs and in humans, potassium channels formed by ether-a-go-go-related gene 1 protein ERG1 (KCNH2) and KCNQ1 α-subunits, in association with KCNE β-subunits, play a role in normal repolarization and may contribute to abnormal repolarization associated with long QT syndrome (LQTS). The molecular basis of repolarization in horse heart is unknown, although horses exhibit common cardiac arrhythmias and may receive drugs that induce LQTS. In horse heart, we have used immunoblotting and immunostaining to demonstrate the expression of ERG1, KCNQ1, KCNE1, and KCNE3 proteins and RT-PCR to detect KCNE2 message. Peptide N-glycosidase F-sensitive forms of horse ERG1 (145 kDa) and KCNQ1 (75 kDa) were detected. Both ERG1 and KCNQ1 coimmunoprecipitated with KCNE1. Cardiac action potential duration was prolonged by antagonists of either ERG1 (MK-499, cisapride) or KCNQ1/KCNE1 (chromanol 293B). Patch-clamp analysis confirmed the presence of a slow delayed rectifier current. These data suggest that repolarizing currents in horses are similar to those of other species, and that horses are therefore at risk for acquired LQTS. The data also provide unique evidence for coassociation between ERG1 and KCNE1 in cardiac tissue.
10
Hallowell, Gayle D. "Understanding heart disease in the horse." Veterinary Nursing Journal 25, no. 2 (February 2010): 18–21. http://dx.doi.org/10.1111/j.2045-0648.2010.tb00013.x.
Full textDissertations / Theses on the topic "Horse heart"
1
Word, Tarah A. "Photoacoustic Calorimetry Studies of the Earliest Events in Horse Heart Cytochrome-c Folding." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5801.
Full textAbstract:
The protein folding problem involves understanding how the tertiary structure of a protein is related to its primary structure. Hence, understanding the thermodynamics associated with the rate-limiting steps for the formation of the earliest events in folding is most crucial to understanding how proteins adopt native secondary and tertiary structures. In order to elucidate the mechanism and pattern of protein folding, an extensively studied protein, Cytochrome-c (Cc), was chosen as a folding system to obtain detailed time-resolved thermodynamic profiles for the earliest events in the protein folding process. Cytochrome-c is an ideal system for understanding the folding process for several reasons. One being that the system can unfold and refold reversibly without the loss of the covalently attached heme group. A number of studies have shown that under denaturing conditions, ferrous Cc (Fe2+Cc) heme group in the presence of carbon monoxide (CO) results in a disruption of the axial heme Methionine-80 (Met80) bond ultimately unfolding the protein. CO-photolysis of this ferrous species results in the formation of a transient unfolded protein that is poised in a non-equilibrium state with the equilibrium state being that of the native folded Fe2+Cc complex. This allows for the refolding reaction of the protein to be photo-initiated and monitor on ns - ms timescales. While CO cannot bind to the ferric form, nitrogen monoxide (NO) photo-release has been developed to photo-trigger ferric Cc (Fe3+Cc) unfolding under denaturing conditions. Photo-dissociation of NO leaves the Fe3+complex in a conformational state that favors unfolding thus allowing the early unfolding events of Fe3+Cc to be probed. Overall the results presented here involve the use of the ligands CO and NO along with photoacoustic calorimetry (PAC) to photo-trigger the folding/unfolding reaction of Cc (and modified Cc). Thus, obtaining enthalpy and molar volume changes directly associated with the initial folding/unfolding events occurring in the reaction pathways of both Fe2+ and Fe3+Cc systems that are most essential to understanding the driving forces involved in forming the tertiary native conformation. The PAC data shows that folding of proteins results from a hierarchy of events that potentially includes the formation of secondary structures, hydrophobic collapse, and/or reorganization of the tertiary complex occurring over ~ns – tens of µs time ranges. In addition, the PAC kinetic fits presented in this work is the first to report Cc folding exhibiting heterogeneous kinetics (in some cases) by utilizing a stretched exponential decay function.
2
Gautam, Devaki Nandan. "Molecular dynamics simulation of horse-heart cytochrome c in water-methanol solvent systems." Thesis, Wichita State University, 2014. http://hdl.handle.net/10057/10956.
Full textAbstract:
Molecular Dynamics simulations have been carried out to investigate the dynamics of horse heart Cytochrome C and associated crystallographic water molecules in different water-methanol systems. The 100 ns simulation predicts that hh-CytC undergoes different dynamical transitions with some common conformations in different solvents. With increase of methanol concentration in solvents, hh-CytC has increased flexibility, fluctuating its hydrophobic solvent accessible surface area (SASA), and number of persistent internal hydrogen bonds with long hydrogen-bond-lifetime. The protein became more liquid-like in mixed solvents compared to pure solvents; flexibility increases in the absence of the crystallographic water. Similarly, the number of hydrogen bonds between solvent molecules and hh-CytC decreased with increasing of methanol concentration. Water-protein and methanol-protein hydrogen bond lifetimes were computed 11.5 and 16.6 picoseconds, respectively, in pure solvents. However, in mixtures, solvent-protein hydrogen bond lifetime was higher in twenty percent methanol than in fourty percent in water. The surface crystallographic water molecules diffused easily in bulk solvents within 1 nanosecond and protein surface is stabilized by hydrogen bonds with a solvation layer. The two crystallographic water molecules which are buried internally in hh-CytC have 5 to more than 100 nanoseconds residence time in the conserved sites with 100's of picoseconds of hydrogen bond lifetime depending on the solvent compositions. The residence time might depend on the mechanism of conformational transition of protein in simulation. Solvent water molecules exchange these buried water molecules but exchange is less frequent than that in hydration layer. Even though methanol has succeeded to reside into these conserved sites in pure methanol solvent but its distance with hydrogen bonding partners more than 5 A with labile hydrogen bonding state.Thesis (M.S.)--Wichita State University, Fairmount College of Liberal Arts, Dept. of Chemistry
3
Sharova, Evgeniya. "Horse heart study: left ventricular cardiomyocytes isolation, histidine-rich Ca2+ - binding protein and myostation espression." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3426479.
Full textAbstract:
SUMMARY
The horse has always been considered as a sport champion in the animal world. Horse
athletic ability depends of many factors. The most important are cardiovascular system and
heart physiology. It is noteworthy that horse heart rate is slow at rest (25-40 bmp) but can
elevate rapidly during exercise to over 240 beats per minutes. In addition, horse heart is
characterized by an higher cardiac action potential duration (APD) (0.6-1s) compared to
that of other mammals (0.2-0.35s). Significantly differences in frequency, amplitude and
calcium wave velocity have also been observed. These extraordinary features of the horse
heart could be explained by some hypothesis: it may be a result of high calcium loading
capacity of sarcoplasmic reticulum of horse cardiomyocytes or altered quantity/function of
calcium bindings proteins that participate in excitation contraction coupling cycle of
cardiac cell (Loughrey et al. 2004). These special characteristics of horse heart put my
attention to two proteins, histidine-rich Ca2+-binding protein and myostatin. Histidine-rich
Ca2+-binding protein (HRC) is one of the best candidates to regulate reticulum calcium
sequestration and cardiac function. While myostatin is member of the transforming growth
factor- superfamily, shown to be regulated during different physiological and pathological
situations which affect cardiac muscle mass, including cardiac growth modulation (McKoy
G et al. 2007), athletic hypertrophy (Matsakas A et al. 2006), postmyocardial infarction
remodeling process, infarction-associated inflammation (MacLellan et al., 1993, Sharma M
et al. 1999), fibrosis of the myocardium, and cardiac dysfunction (Hoenig MR, 2008).
HRC has a similar protein structure and function to calsequestrin in skeletal muscle and
seems to play the particular role in the heart. This low affinity and high capacity Ca2+
binding protein has a Ca2+ storage role in cardiac SR during EC-coupling (Gregory et al.
2006). Due to its important role as regulator of Ca release and normal cardiac function,
recently HRC has been suggested to be an additional component of SR protein quaternary
molecular complex (Lee H et al. 2001), associating into a stable complex at the junctional
membrane: the Ryanodine channel, calsequestrin and its putative “anchoring” proteins
triadin and junctin. HRC could be a key protein that manipulates the facilitation of Ca2+
release from SR through protein-protein interaction.
In this work we hypothesed that the particular characteristic of the horse heart and long
APD could be explained by HRC alteration in equine horse heart. On the other hand
understanding of the MSTN pathway could have an important approach into veterinary
clinical practice used during horse training when athletic hypertrophy is a common
phenomenon.
To achieve objective of this work we have used Real-time PCR and Standard PCR to
investigate in details the expression of HRC and myostatin in various compartments of
horse heart. We also compared the HRC mRNA expression of horse heart vs that of
bovine. In order to gain insight protein level expression of HRC in horse heart,
electrophoretic gel analysis were performed on membrane fractions extracted from horse
cardiac muscle followed by Western blotting. Besides of immunofluorescence experiments
on longitudinal cryosections from left ventricle have been carried out to study the cellular
localization of HRC in horse heart.
Our findings showed that HRC mRNA is mainly expressed in ventricles. Moreover, by
comparison with another species of veterinarian interest, such as cattle, Real Time PCR
data showed that the enhanced expression of HRC seems restricted to equine species. The
dissimilar HRC mRNA expression in atria and ventricles may be due to the intrinsic
features of heart parts, that could be emphasize by the special equine action potential
duration. On account of the special features exhibited by horse cardiac tissue, taken
together my data showing the overexpression of HRC in ventricular chambers, could
strengthen the hypothesis of HRC as a candidate regulator of SR Ca2+ cycling during ECC.
The interesting results revealed the upregulation of MSTN gene expression detected in left
ventricular of horse heart could be an interesting data in favor to this hypothesis since the
left ventricular chamber has a primary role in heart adaptation increased blood volume
(stroke volume) to be injected during exhaustive sport exercise and therefore incrementing
the final cardiac output.SOMMARIO Il cavallo è da sempre considerato un “campione sportivo” nell’ambito del mondo animale. Le capacità atletiche di questo animale dipendono da molti fattori. I più significativi sono il suo sistema cardiovascolare e le caratteristiche fisiologiche del cuore equino. E’ di notevole importanza il fatto che la frequenza cardiaca del cuore di cavallo a riposo è bassa (25-40 battiti al min) ma che può aumentare rapidamente durante l’esercizio fisico fino a raggiungere i 240 battiti al min e oltre. Inoltre il cuore di cavallo si caratterizza una maggiore durata del potenziale d’azione (0.6-1 s) se paragonato a quella degli altri mammiferi (0.2-0.35 s). Il cuore di equino presenta inoltre significative differenze per quel che riguarda la frequenza, l’ampiezza e la velocità dei transienti di calcio. Per spiegare queste caratteristiche peculiari del cuore di cavallo sono state fatte delle ipotesi. Una più elevata capacità di immagazzinamento del calcio da parte del reticolo sarcoplasmatico, o un’alterazione nella quantità o nella funzionalità di alcune proteine leganti calcio implicate nel processo di eccitamento/contrazione, sono state proposte come possibili cause di queste particolarità dei cardiomiociti equini /Loughrey et al. 2004). Queste caratteristiche hanno fatto ricadere la mia attenzione su due proteine: la “histidine-rich Ca2+-binding protein” (HRC) e la miostatina. L’ HRC è una proteina a cui è stato assegnato un ruolo nella regolazione dell’immagazzinamento del calcio da parte del reticolo sarcoplasmatico e nelle funzionamento cardiaco. La Miostatina invece è un componente della superfamiglia dei “transforming growth factor-” che viene regolata in situazioni fisiologiche e patologiche che coinvolgono la massa muscolare cardiaca, tra cui la modulazione della crescita cardiaca (McKoy G et al. 2007), l’ipertrofia dovuta ad attività atletica (Matsakas A et al. 2006), i processi di rigenerativi post infartuali, l’infiammazione post infartuale (MacLellan et al., 1993, Sharma M et al. 1999), i processi fibrotici del miocardio e le disfunzioni cardiache (Hoenig MR, 2008). L’HRC nel muscolo scheletrico, è risultata per struttura e funzione simile alla calsequestrina, ma sembra avere un ruolo importante e particolare anche nel cuore. L’HRC, una proteina che lega calcio a bassa affinità ma ad elevata capacità, presenta un ruolo nell’immagazzinamento del calcio nel reticolo sarcoplasmatico delle cellule cardiache durante il processo di accoppiamento eccitamento/contrazione (Gregory et al. 2006). Grazie al suo ruolo come regolatore del rilascio di calcio e della funzionalità cardiaca, recentemente all’HRC è stato assegnato un ruolo come ulteriore componente di un complesso molecolare costituito da quattro proteine(Lee H et al. 2001), che localizzato a livello della componente giunzionale del reticolo sarcoplasmatico: il recettore della Rianodina/canale di rilascio del calcio, la calsequestrina e la sue proteine di ancoraggio triadina e giuntina. L’HRC potrebbe rappresentare una proteina chiave in questo complesso, in grado di facilitare il rilascio del calcio dal reticolo sarcoplasmatico mediante l’interazione proteina-proteina. In questo periodo di Dottorato, io ho ipotizzato che le particolari caratteristiche del cuore di cavallo tra cui la durata del potenziale d’azione, potessero trovare una spiegazione nelle caratteristiche e/o alterazione dell’HRC. Inoltre la maggior comprensione dei meccanismi regolativi della miostatina, potrebbero essere di utilità nella pratica di clinica veterinaria poiché l’ipertrofia cardiaca nei cavalli atleti è un fenomeno comune. Per raggiungere gli obiettivi preposti in questo lavoro, ho usato tecniche di Real time PCR e standard PCR all scopo di studiare in dettaglio l’espressione della HRC e della miostatina nelle varie parti anatomiche del cuore equino. Inoltre l’espressione dell’HRC nel cuore equino è stata paragonata nel cuore di bovino. Per studiare invece l’espressione dell’HRC a livello proteico, dopo estrazione e purificazione do membrane del reticolo sarcoplasmatico, sono stati eseguiti esperimenti di Western blotting. Esperimenti di immunofluorescenza su sezioni longitudinali di ventricolo sinistro di cavallo hanno permesso di studiare la localizzazione dell’HRC. I miei risultati mostrano che l’HRC a livello di mRNA è maggiormente espressa nei ventricoli. Inoltre, dal confronto con il bovino, un’altra specie animale di interesse veterinario, è emerso che la sovra espressione dell’HRC è ristretta alla specie equina. La diversa espressione di HRC in atri e ventricoli, potrebbe essere dovuta a caratteristiche intrinseche alle porzioni anatomiche che potrebbero in qualche modo essere evidenziate dalla particolare durata del potenziale d’azione di questa specie. A tal proposito, nell’insieme i miei dati che indicano una overespressione di HRC nei ventricoli, potrebbero rafforzare l’ipotesi che vede l’HRC un regolatore del calcio nel reticolo sarcoplasmatico durante il processo di eccitamento/contrazione. I dati ottenuti riguardanti la espressione del gene della miostatina principalmente nel ventricolo sinistro, potrebbero invece rappresentare un ulteriore sostegno a favore di questa ipotesi, visto che il ventricolo sinistro ha un ruolo primario nel fenomeno di adattamento all’aumento del volume di sangue (stroke volume) che viene pompato durante nelle varie fasi di esercizi fisici estremi, così da incrementare l’output cardiaco finale.
4
D'Ingeo, Serenella. "Laterality, heart rate and EEG as measurements of animal welfare in dogs and horses." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1B010/document.
Full textAbstract:
Le bien-être animal est considéré un phénomène multidimensionnel basé sur les conditions et les expériences de vie de chaque individu, et lié aux fonctions organiques et à la sensibilité de l’individu même. L’étude des émotions animales est complexe mais les hypothèses sur leurs états émotifs peuvent être formulées sur la base de mesures neurophysiologiques, comportementales et cognitives. Des études récentes ont montré que la latéralité cérébrale et comportementale, la fréquence cardiaque et l'activité cérébrale (mesurée par électroencéphalographie sont des paramètres qui permettent d’évaluer la perception de la valence et du niveau stimulant des émotions chez l’animal et l'Homme. Le but principal de ce projet de thèse était d’étudier la perception que les chiens et les chevaux ont du contenu émotionnel des signaux humains et l’impact potentiel que peuvent avoir ces signaux sur l’état émotionnel de ces animaux et par conséquent sur leur bien-être. Dans ce but, nous avons présenté à ces animaux des stimuli exprimant diverses émotions. Nous avons utilisé une approche intégrée combinant l’analyse de la latéralité comportementale, de la fréquence cardiaque, de l’activité cérébrale et du comportement des sujets afin de répondre à 2 questions: 1) les chiens et les chevaux perçoivent-ils le contenu émotionnel des signaux humains? 2) Les chiens et les chevaux attribuent-ils une valence et une intensité différentes selon les émotions humaines perçues. Les résultats de ce travail de thèse montrent que les chiens et les chevaux traitent différemment les signaux émotionnels en fonction de leur valence et de leur intensité. La perception de la voix de l'homme par le cheval est modulée par la valence des interactions homme-cheval antérieures et par les conditions de vie des chevaux. En ce qui concerne les chiens, nos résultats montrent qu’ils discriminent et perçoivent les émotions contenues dans les signaux visuels, auditifs et olfactifs humains différemment, et nous fournissent de nouvelles connaissances sur le fonctionnement émotionnel du cerveau du chien. Les résultats de ce travail de thèse apportent un cadre théorique pour définir des paramètres utiles à l'évaluation du bien-être animalAnimal welfare is considered to be a multidimensional phenomenon based upon life experiences and conditions, characterized by how an individual feels and functions. The study of emotions in animals is difficult but assumptions of emotional states are usually derived from neurophysiological, behavioral and cognitive measurements. Recent literature shows that cerebral and behavioral laterality, cardiac activity and brain activity (measured by electroencephalography) are suitable parameters to examine animals’ and human emotional processing along the valence and arousal dimensions. The main aim of the present research project was to investigate dogs and horses perception of the emotional content of human signals that potentially affects animals’ affective state and welfare. An integrated approach combining the analysis of behavioral lateralization, cardiac and brain activity, and subjects’ behavior was applied in order to answer to the following questions: 1) Do dogs and horses perceive the different emotional content of human signals? 2) Do dogs and horses attribute a different valence and intensity to the human emotions perceived? Overall, the results of this thesis project demonstrate that dogs and horses process differently emotional signals according to their valence and intensity. In particular, horses perception of a human voice is modulated by the valence of the prior horse-human interactions and by subjects’ living conditions. As for dogs, results demonstrate that they discriminate and perceive differently the emotional content of human visual, auditory and olfactory signals, providing new insights into the emotional functioning of the canine brain. The current research offers a theoretical framework for defining useful parameters to evaluate animal welfare
5
Pereira, Daniela Mello [UNESP]. "Efeito da creatina sobre as mensurações ecocardiográficas de eqüinos treinados em esteira rolante." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/101163.
Full textAbstract:
Made available in DSpace on 2014-06-11T19:31:09Z (GMT). No. of bitstreams: 0
Previous issue date: 2006-12-21Bitstream added on 2014-06-13T18:41:47Z : No. of bitstreams: 1
pereira_dm_me_jabo.pdf: 580192 bytes, checksum: b2b81a55bd0260aba59a035c51c133ee (MD5)Universidade Estadual Paulista (UNESP)
Pretendeu-se avaliar o efeito da creatina sobre as mensuraçóes ecocardiográficas do ventrículo esquerdo em eqüinos treinados em esteira rolante. Os 15 animais foram divididos em grupos após avaliação clínica para constatar higidez, sendo um grupo composto de sete animais suplementados com 75g de creatina adicionada na ração (Gtc) e um grupo, composto de oito animais que não receberam creatina (Gt). Os dados referentes às mensurações do ventrículo esquerdo, foram obtidos por meio de ecocardiografia em Modo M e registrados mensalmente durante cento e vinte dias (MO, M1, M2, M3, M4), em ambos os grupos. Os índices ventriculares e o débito cardíaco serviram para avaliar os efeitos do condicionamento físico associado ou não à suplementação com creatina sobre a musculatura cardíaca. Os resultados referentes a variação de espessura das paredes ventriculares e do diâmetro interno da câmara ventricular no grupo de animais treinados sem suplementação se assemelharam aos da literatura compilada. A metodologia aplicada e os resultados obtidos permitiram concluir que a utilização de 75g de creatina adicionadas a ração de eqüinos treinados em esteira rolante por um período de 120 dias, causa menor hipertrofia cardíaca do que aquela observada nos animais que não receberam suplementação.
The present study evaluated the effects of the exerci se and the association creatine - exercise in size and left ventricular index by echocardiography in fifteen adults equine each month during four months (MO, M1, M2, M3, M4). The fifteen animais were divided in two groups, trainned and supplemented group (Gtc), with seven horses, that received 75g of creatine added in fed and a trained group only (Gt) with eight animais. The ventricular index and cardiac output were usefull to evaluate the effects of physicaJ conditioning and the association of creatine suplementation and trainning on the heart musculature. The results at thickness of the ventricular walls and diameter of ventricular chamber at Gt were similar to the compiled literature The applied methodology and the results permit to conclude that creatine causes smaller heart hipertrophy than that observed in the animais that didn't received the suplementation.
6
Kubus, Katrin. "Zur Beziehung zwischen der akzelerometrisch erfassten Körperbeschleunigung und der Herzfrequenz beim Pferd." Doctoral thesis, Universitätsbibliothek Leipzig, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-115014.
Full textAbstract:
Zur Ermittlung des Energieverbrauches bei Mensch und Tier stehen verschiedene Methoden zur Verfügung. Im Jahre 1780 nutzte Lavoisier die Schmelzwassermenge, um den Energieverlust eines Meerschweinchens zu berechnen. Das Tier saß in einem von Eis umgebenen Kalorimeter, die von ihm abgegebene Wärme brachte das Eis zum Schmelzen. Derzeit sind die indirekte Kalorimetrie, die den Energieumsatz über den im Respirationsversuch gemessenen Gaswechsel von O2 und CO2 sowie die im Harn ausgeschiedene Stickstoffmenge bestimmt, und die Isotopendilutionsmethode, die mit der unterschiedlichen Ausscheidungsrate von markierten Wasserstoff- (2H) und Sauerstoff- (18O) Atomen im Urin arbeitet, der „Goldstandard“ für die Bestimmung des Energieverbrauchs. Seit einigen Jahren bis heute steht die Herzfrequenzmethode in der Diskussion. Sie nutzt die Beziehung zwischen Herzfrequenz und Sauerstoffverbrauch zur Ermittlung des Energieumsatzes. Alle genannten Methoden haben Vor- und Nachteile, insbesondere für den einfachen und schnellen täglichen Einsatz sowie bei Langzeitstudien. Deshalb werden Alternativen gesucht. Diese Dissertation untersucht die Beziehung zwischen der akzelerometrisch erfassten dreidimensionalen Körperbeschleunigung und der Herzfrequenz beim Pferd in verschiedenen Gangarten. Dabei wird die Herzfrequenz als Vergleichs- und Bezugsgröße verwendet. Sie stellt das direkte Bindeglied zum Sauerstoffverbrauch und damit Energieaufwand dar. Es wurden drei Versuchsvarianten durchgeführt. Die Pferde gingen an der Hand, „geführt“, liefen frei in einem umzäunten Oval, „freilaufend“, oder wurden „geritten“. Bei den beiden Varianten „geführt“ und „freilaufend“ kamen jeweils dieselben vier Pferde zum Einsatz, die Variante „geritten“ absolvierten fünf andere Tiere. Die Versuche folgten verschiedenen Schemata mit den Gangarten Schritt, Trab und, zum Teil, Galopp. Bei allen Versuchen wurden parallel die dreidimensionale Körperbeschleunigung mit einer Frequenz von 32 Hz sowie die Herzfrequenz gemessen. Die Pulsuhr speicherte im kleinstmöglichen Intervall von fünf Sekunden. Nach Aufbereitung der Beschleunigungsrohdaten wurde letztendlich der dynamische Anteil der dreidimensionalen Beschleunigung in Form von „fünf-Sekunden-Mittelwerten“ berechnet. Anschließend wurden diese Beschleunigungswerte über die Regressionsanalyse mit den Originalwerten der Herzfrequenz in Beziehung gesetzt. Dabei wurden die Übergangsphasen zwischen den Gangarten ausgenommen, da die beiden Parameter hier ein sehr unterschiedliches und zeitversetztes Verhalten zeigen. Bei der Analyse der Gangarten Schritt und Trab konnte gut mit dem Modell der einfachen linearen Regression (y = a + bx) gearbeitet werden, mit Hinzukommen der dritten Gangart, Galopp, erwies sich das Modell der polynomialen Regression (y = a + bx + cx²) von Vorteil. Die Stärke des Zusammenhanges der beiden Größen wurde durch den Korrelationskoeffizienten r angezeigt. Bei differenzierter Betrachtung der Versuchsvarianten und der einzelnen Pferde erreichte r Werte von 0,86 bis 0,94, bei zusammenfassender Betrachtung aller Pferde einer Versuchsvariante Werte zwischen 0,82 und 0,87, stets bei signifikanter Korrelation (p < 0,05). Somit kann für die Parameter Herzfrequenz und Beschleunigung ein signifikanter und starker Zusammenhang beschrieben werden. Sie verhalten sich dabei nicht proportional zueinander. Schlussfolgernd lässt sich sagen, dass die Akzelerometrie für bestimmte Zielstellungen und unter bestimmten Voraussetzungen eine geeignete Methode ist, um den Energieaufwand von Pferden zu bestimmen. Sie ist schnell und meist störungsfrei durchzuführen und im Gegensatz zur Herzfrequenz nahezu unabhängig von emotionalen Einflüssen. Des Weiteren bietet die Akzelerometrie die Möglichkeit, die Ermittlung des Energieumsatzes mit einer Verhaltensanalyse zu kombinieren. Bedingungen für ihren Einsatz sind eine situationsspezifische und möglichst individuelle Kalibrierung, denn die Beschleunigungsmessung weist insofern Nachteile auf, als dass sie die Auswirkungen von zum Beispiel Bodenbeschaffenheit, Umwelteinflüssen oder das Tragen einer Last auf den Energieumsatz nicht berücksichtigt. Die parallele Erfassung von Herzfrequenz und Beschleunigung kann zum Beispiel zur Analyse und Kontrolle von Trainingserfolgen genutzt werden. Somit bringt die Kombination von Herzfrequenz- und Beschleunigungsmessung klare VorteileThere are different opportunities to determine the consumption of energy in humans and animals. In 1780 Lavoisier used the quantity of melt water to calculate the energy loss of a guinea pig. The guinea pig was located inside a calorimeter which was surrounded by ice. The emitted heat induced the melting of the ice. At present both, indirect calorimetry that estimates energy expenditure from respiratory measurements of oxygen consumption and carbon dioxide production plus the excretion of nitrogen with the urine and the DLW-method that uses the different urinary elimination rates of the isotopes 2H and 18O are the so called “golden standard” for the calculation of energy consumption. For several years until now there has been a discussion about the heart rate-method. This method uses the correlation between heart rate and oxygen consumption for the calculation of energy expenditure. All above mentioned methods have pros and cons, especially for simple and quick every day application and for long-term studies. Therefore alternatives are searched. This dissertation examines the relation between the accelerometricly measured three-dimensional body acceleration and the heart rate in horses at different gaits. The heart rate has been used for comparison and as a reference item. It directly relates the acceleration with the oxygen consumption and thus with the energy expenditure. There have been three variants of trials. Horses were led by the hand (HD), moved freely (MF) in an enclosed oval or were ridden (R). In the HD- and MF-trials the same four horses were used, for the R-trials five other horses came into action. The trials followed different schemes with the gaits of walk, trot and gallop. At every trial three-dimensional body-acceleration with a logging frequency of 32 Hz and heart rate were measured simultaneously. The heart rate meter stored the heart rate in the smallest possible intervals of five seconds. After processing the crude data the dynamic part of the three-dimensional acceleration was calculated in form of “five-second-means”. After that the regression analysis was used to relate these acceleration data to the original heart rate data. In this process the transitional phases between the gaits were excluded because there both parameters have a highly varying and time-shifted relation. The model of simple linear regression (y = a + bx) suited well for analysing walking and trotting. With adding the third gait gallop the model of polynomial regression (y = a + bx + cx²) became more favourable. The correlation coefficient r showed the strength of the correlation between both parameters. By the separate inspection of the variants of trials and the individual horses r reached values from 0,86 to 0,94; pooling all horses of each variant of trials yields r-values from 0,82 to 0,87, always with a significant correlation (p < 0,05). Hence a significant and strong correlation can be attributed to the parameters heart rate and acceleration. They are not proportional to each other. In conclusion one can say: for specific aims and under certain conditions the accelerometry is an appropriate method to assess energy expenditure in horses. You can implement it quickly and mostly disturbance-free and in contrast to the heart rate it is nearly independent of emotional influence. Furthermore accelerometry gives the opportunity to combine the determination of the energy expenditure with the analysis of behaviour. A possibly individual and situation-specific calibration are the preconditions for its application. A setback of the accelerometry is that the effects of such factors like the condition of the ground, environmental influences or carrying weights are not taken into consideration. Simultaneous measurement of heart rate and body-acceleration can for example be used for analysing and controlling the success of training. Consequently there are clear advantages of combining the measurement of heart rate and acceleration
7
Pereira, Daniela Mello. "Efeito da creatina sobre as mensurações ecocardiográficas de eqüinos treinados em esteira rolante /." Jaboticabal : [s.n.], 2006. http://hdl.handle.net/11449/101163.
Full textAbstract:
Orientador: Júlio Carlos CanolaBanca: Carlos Augusto Araújo Valadão
Banca: Celso Antonio Rodrigues
Banca: Rafael Resende Faleiros
Banca: Fabrício Singaretti de Oliveira
Resumo: Pretendeu-se avaliar o efeito da creatina sobre as mensuraçóes ecocardiográficas do ventrículo esquerdo em eqüinos treinados em esteira rolante. Os 15 animais foram divididos em grupos após avaliação clínica para constatar higidez, sendo um grupo composto de sete animais suplementados com 75g de creatina adicionada na ração (Gtc) e um grupo, composto de oito animais que não receberam creatina (Gt). Os dados referentes às mensurações do ventrículo esquerdo, foram obtidos por meio de ecocardiografia em Modo M e registrados mensalmente durante cento e vinte dias (MO, M1, M2, M3, M4), em ambos os grupos. Os índices ventriculares e o débito cardíaco serviram para avaliar os efeitos do condicionamento físico associado ou não à suplementação com creatina sobre a musculatura cardíaca. Os resultados referentes a variação de espessura das paredes ventriculares e do diâmetro interno da câmara ventricular no grupo de animais treinados sem suplementação se assemelharam aos da literatura compilada. A metodologia aplicada e os resultados obtidos permitiram concluir que a utilização de 75g de creatina adicionadas a ração de eqüinos treinados em esteira rolante por um período de 120 dias, causa menor hipertrofia cardíaca do que aquela observada nos animais que não receberam suplementação.
Abstract: The present study evaluated the effects of the exerci se and the association creatine - exercise in size and left ventricular index by echocardiography in fifteen adults equine each month during four months (MO, M1, M2, M3, M4). The fifteen animais were divided in two groups, trainned and supplemented group (Gtc), with seven horses, that received 75g of creatine added in fed and a trained group only (Gt) with eight animais. The ventricular index and cardiac output were usefull to evaluate the effects of physicaJ conditioning and the association of creatine suplementation and trainning on the heart musculature. The results at thickness of the ventricular walls and diameter of ventricular chamber at Gt were similar to the compiled literature The applied methodology and the results permit to conclude that creatine causes smaller heart hipertrophy than that observed in the animais that didn't received the suplementation.
Doutor
8
Hunt, Sheri A. "Deuterium NMR spectroscopy of solid state electronically labile complexes : mixed valence iron triangles, iron (II) spin crossover complexes and horse heart cytochrome c /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9804515.
Full text
9
Balacescu, Livia [Verfasser], Jörg [Akademischer Betreuer] Fitter, and Andreas [Akademischer Betreuer] Stadler. "When can a protein be regarded as a polymer? Form and dynamics characterization of different folding states of horse-heart Apomyoglobin / Livia Balacescu ; Jörg Fitter, Andreas Stadler." Aachen : Universitätsbibliothek der RWTH Aachen, 2021. http://d-nb.info/1240765711/34.
Full text
10
Lima, Marcelo Borjaille. "Eletrocardiografia em equinos do regimento de polícia montada do estado do Espírito Santo." Universidade Federal do Espírito Santo, 2011. http://repositorio.ufes.br/handle/10/5840.
Full textAbstract:
Made available in DSpace on 2016-12-23T13:53:35Z (GMT). No. of bitstreams: 1
Marcelo Borjaille Lima.pdf: 798361 bytes, checksum: 390f0f5564bc81315e64b0626f3a736b (MD5)
Previous issue date: 2011-08-17The eletrocardiographic test has been used for diagnosis of cardiac arrhythmias and heart disease in horses, as well as performance evaluation and early diagnosis of worsening of athletic performance of various modalities. The activity of mounted police requires that animals are trained for long hours at walk and trotting, thus monitoring of these animals for underlying cardiac diseases that may affect their performance is of great value. In this study from 78 animals of the regiment of mounted Military Police Patrol of Espirito Santo State, Brazil, were divided into groups according to age and underwent electrocardiographic examination, followed by analyses of durations and amplitudes of the waves and QRS. There was statistical difference in T+ wave amplitude which was correlated to animals growth. These horses did not show any arrhythmias at rest, while the most common was the sinus rhythm
O exame eletrocardiográfico tem sido utilizado para o diagnóstico de arritmias e doenças cardíacas em equinos, bem como na avaliação do desempenho atlética e diagnóstico precoce da queda de performance em diversas modalidades. A atividade de policiamento montado requer que os animais estejam aptos a trabalhar ao passo e trote durante horas para atuação da sua função. Portanto, o monitoramento destes animais quanto a doenças cardíacas é importante. Desta forma, 78 animais do regimento de polícia montada do Estado do Espírito Santo, Brasil foram separados em grupos de acordo com a idade e submetidos ao exame eletrocardiográfico para analise das durações e amplitudes de ondas e complexos do traçado. Foi observada diferença estatística somente na amplitude da onda T+ relacionadas com o passar da idade dos animais. Os equinos, em repouso, não apresentam arritmias, sendo o ritmo sinusal o mais comum
Books on the topic "Horse heart"
2
McKee, Fiona. Sunline: Heart of a champion. Auckland, N.Z: Penguin Group (NZ), 2005.
Find full text
3
1934-, Goodall Jane, and Lightman Alan P. 1948-, eds. Heart of the horse. New York: Barnes & Noble, 2004.
Find full text
4
Heart hole piece named horse. [Place of publication not identified]: Get Published, 2012.
Find full text
5
Court, Ethnee Holmes à. Heytesbury Stud: An affair of the heart : the romance of Heytesbury Stud. Smithfield, NSW: G. Allen, 2003.
Find full text
6
Rashid, Mark. Horses never lie: The heart of passive leadership. 2nd ed. New York, N.Y: Skyhorse Pub., 2011.
Find full text
7
Whole heart, whole horse: Building trust between horse and rider. New York: Skyhorse Pub., 2009.
Find full text
9
M, Marr Celia, and Bowen I. Mark 1973-, eds. Cardiology of the horse. 2nd ed. Edinburgh: Saunders, 2010.
Find full textBook chapters on the topic "Horse heart"
1
Ware, Wendy A., John D. Bonagura, and Brian A. Scansen. "Valvular Heart Disease of the Horse." In Cardiovascular Disease in Companion Animals, 573–90. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9780429186639-35.
Full text
2
Meersman, F., L. Smeller, and K. Heremans. "Cold, Heat and Pressure Denaturation of Horse Heart Metmyoglobin: A FTIR Study." In Advances in High Pressure Bioscience and Biotechnology, 219–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-60196-5_48.
Full text
3
Vita, C., L. Gozzini, and C. Di Bello. "Total synthesis of horse heart cytochrome c by conformation-assisted fragment condensation and mitochondria-mediated heme insertion." In Peptides 1990, 255–56. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3034-9_108.
Full text
4
Harbert, John C. "Your Heart and Circulation." In Doctor in the House, 175–228. Totowa, NJ: Humana Press, 1994. http://dx.doi.org/10.1007/978-1-4757-5019-5_7.
Full text
5
Hadrill, David. "9. Eye problems; Poisoning; Teeth and how to tell the age; Heat stress; How to shoot a horse." In Horse Healthcare, 191–211. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 2002. http://dx.doi.org/10.3362/9781780443515.009.
Full text
6
Tiwari, Gopal Nath, and Neha Gupta. "Basic Heat Transfer." In Photovoltaic Thermal Passive House System, 41–83. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9780429445903-2.
Full text
7
Calloway, Colin G. "Horses, Guns, and Smallpox." In Our Hearts Fell to the Ground, 37–55. New York: Palgrave Macmillan US, 1996. http://dx.doi.org/10.1007/978-1-137-07646-5_3.
Full text
8
Jones McVey, Rosalie. "Introduction: #Two Hearts and Tall Tales." In Human-Horse Relations and the Ethics of Knowing, 1–29. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003255710-1.
Full text
9
Hooghe, Liesbet. "A House with Differing Views: The European Commission and Cohesion Policy." In At the Heart of the Union, 89–108. London: Palgrave Macmillan UK, 1997. http://dx.doi.org/10.1007/978-1-349-25791-1_5.
Full text
10
Grandfield, J. F., T. T. Nguyen, G. Redden, and J. A. Taylor. "Aspects of Heat Transfer during Production of Remelt Ingot Using Chain Casters." In Aluminium Cast House Technology, 263–71. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118806364.ch26.
Full textConference papers on the topic "Horse heart"
1
Russell, Stanley, Mark Weston, Yogi Goswami, and Matthew Doll. "Flex House." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54549.
Full textAbstract:
Flex House is a flexible, modular, pre-fabricated zero energy building that can be mass produced and adapted easily to a variety of site conditions and plan configurations. The key factor shaping the design is central Florida’s hot humid climate and intense solar radiation. Flex house combines the wisdom of vernacular Florida houses with state of the art Zero Energy House technologies (ZEH.) A combined system of photovoltaic panels and solar thermal concentrating panels take advantage of the region’s abundant insolation in providing clean renewable energy for the house. Conservation is achieved with state of the art mechanical systems and innovative liquid desiccant dehumidification technology along with highly efficient lighting and appliances. The hybrid nature of the Flex house allows for both an open and closed system to take advantage of the seasonal temperature variation. Central Florida buildings can conserve energy by allowing natural ventilation to take advantage of passive cooling in the mild months of the year and use a closed system to utilize mechanical cooling when temperatures are too high for passive cooling strategies. The building envelope works equally well throughout the year combining an optimum level of insulation, resistance to air infiltration, transparency for daylight, and flexibility that allows for opening and closing of the house. Flex House is designed with a strong connection between interior spaces and the outdoors with carefully placed fenestration and a movable wall system which enables the house to transform in response to the temperature variations throughout the year. The house also addresses the massive heat gain that occurs through the roof, which can generate temperatures in excess of 140 degrees. Flex House incorporates a parasol-like outer structure that shades the roof, walls and courtyard minimizing heat gain through the building envelope. To be implemented on a large scale, ZEH must be affordable for people earning a moderate income. Site built construction is time consuming and wasteful and results in higher costs. Building homes in a controlled environment can reduce material waste, and construction costs while increasing efficiency. Pre-fabricating Flex House minimizes preparation time, waste and safety concerns and maximizes economy, quality control, efficiency and safety during the construction process. This paper is an account of the design and construction of Flex House, a ZEH for central Florida’s hot humid climate.
2
Khelifi, Adel, Rashid Al Hamli, Saeed Al Tamimi, and Rashid Al Ali. "An Automated System for Monitoring Horses Vital Signs Using Heart Beat Sensors." In 2017 Palestinian International Conference on Information and Communication Technology (PICICT). IEEE, 2017. http://dx.doi.org/10.1109/picict.2017.14.
Full text
3
Asano, Hitoshi, Terushige Fujii, Yoshinori Hisazumi, Toshihiro Hori, Tetsuo Abiko, and Seiichi Kubokawa. "Development of New Heat Supply Unit Using Latent Heat: Dynamic Characteristics of Heat Storage Unit by a Use of Plate Fin Type Heat Exchanger." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50356.
Full textAbstract:
A high efficient co-generation system named “Neighboring Communities Co-generation System” is proposed to a multiple dwelling house. The key technology of this system is to connect home and home with one loop of heat transfer line of one-inch diameter, and to level the heat demand by a heat storage unit in each house. This system requires a compact heat storage unit of quick response. In this study, a plate fin type brazing heat exchanger was built and tested as the heat storage unit. Sodium acetate trihydrate with a melting point of about 58 °C and a paraffin wax with a higher value of 74.8 °C were used as the phase change material (PCM). As a result, it was shown that the heat transfer in the heat storage unit was dominated by thermal conductivity in PCM. The paraffin wax showed higher responsibility and higher heat output due to its higher melting point and quite lower super cooling in solidification.
4
Thayla Morandi Ridolfi Carvalho, Daniella Jorge Moura, Paulo Ademar Martins Leal, Juliana Maria Massari, and Karla Andrea Oliveira Lima. "Heat Transfer to Calculate Minimum Ventilation Rates For Broilers House." In 2012 IX International Livestock Environment Symposium (ILES IX). St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2012. http://dx.doi.org/10.13031/2013.41550.
Full text
5
Singh, Shobhana, and Kim Sørensen. "Dynamic model of a heat pump based house heating system." In The 59th Conference on imulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway. Linköping University Electronic Press, 2018. http://dx.doi.org/10.3384/ecp1815387.
Full text
6
Aliabadi, Ardavan, and Klaus A. Hoffmann. "Three-Dimensional Fluid-Structure-Interaction Simulation of Tilting Disk Mechanical Heart Valve." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65335.
Full textAbstract:
The current computational effort will focus on the numerical analysis of current tiling disk MHVs. In this work an implicit fluid-structure-interaction (FSI) simulation of the Bjork-Shiley design was carried out using in-house codes implemented in the commercial code software FLUENT™. In-house codes in the form of journal files, schemes, and user-defined functions (UDFs) were integrated to automate the inner iterations and enable communication between the fluid and the moving disk at the interfaces. Based on the investigations of the current simulations, a new design aiming at improving the hemodynamic performance is suggested. Hemodynamics of the flow in current tilting-disk valves is compared with the suggested design and it is concluded that the suggested design has a better hemodynamic performance in terms of shear stress values and residence times.
7
Hada, Satoshi, Kenichiro Takeishi, Yutaka Oda, Seijiro Mori, and Yoshihiro Nuta. "The Effect of Leading Edge Diameter on the Horse Shoe Vortex and Endwall Heat Transfer." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50892.
Full textAbstract:
The endwall of the first stage vane / blade of modern high temperature gas turbine has been exposed to severe heat transfer environments. Due to the formation of a horse shoe vortex (HV), the flow field of a vane and blade leading edge juncture to endwall is especially complicated and it is difficult to estimate the heat transfer coefficients and the film cooling effectiveness levels in this area. This paper describes the results of experimental and numerical studies on the heat transfer and flow dynamics in the leading edge endwall region of a symmetric airfoil. The effects of inlet velocity, boundary layer thickness and leading edge diameter of a symmetric airfoil were investigated on the endwall heat transfer in a low speed wind tunnel facility. The time averaged local heat transfer coefficients were measured by naphthalene sublimation method and the instantaneous velocity field was obtained by Particle Image Velocimetry (PIV). As the leading edge diameter of symmetric airfoil decreases, the heat transfer coefficients on an endwall increases and is proportional to Re0.71 that is base on the leading edge diameter. However, the boundary layer thickness was found to have a marginal effect on the endwall heat transfer.
8
Chavan, Sudarshan L., Rohan S. Kulkarni, and Dhananjay B. Talange. "A green house Electricity and Heat generation “fuel cell technology”-review." In 2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO). IEEE, 2015. http://dx.doi.org/10.1109/eesco.2015.7253974.
Full text
9
Yi Liang, G Tom Tabler, Aubrey Wilson Reynolds, Rebekah Starkweather, and Kevin Neil Jensen. "Heat Recovery Ventilators in a Broiler House to Reduce Energy Use." In 2011 Louisville, Kentucky, August 7 - August 10, 2011. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2011. http://dx.doi.org/10.13031/2013.38486.
Full text
10
Soeren Pedersen. "Heat and Moisture Production for Pigs on Animal and House Level." In 2002 Chicago, IL July 28-31, 2002. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2002. http://dx.doi.org/10.13031/2013.9389.
Full textReports on the topic "Horse heart"
1
Dalton, Meghan M., Kathie D. Dello, Linnia Hawkins, Philip W. Mote, and David E. Rupp. The third Oregon climate assessment report : January 2017. Oregon Climate Change Research Institute, Oregon State University, 2017. http://dx.doi.org/10.5399/osu/1158.
Full textAbstract:
As per Oregon State Legislature House Bill 3543. Burning fossil fuels to run our factories, heat our homes, and drive our cars produces heat-trapping gases that unequivocally warm the planet. Effects of warming are evident on physical, biological, and human and managed systems across the globe, and here in Oregon. This report presents strengthening evidence that Oregon is already experiencing the effects of climate change.
2
Berry, Terri-Ann, Jordan H. D. Chiswell, Shannon L. Wallis, and Roger Birchmore. The Effect of Airtightness on Indoor Air Quality in Timber Houses in New Zealand. Unitec ePress, December 2017. http://dx.doi.org/10.34074/ocds.92017.
Full textAbstract:
This two-part study considers the impact of airtightness based on volatile organic compounds (VOCs) only. Two identical buildings (test and control) were constructed in Auckland, New Zealand. The test building contained an Intello vapour check membrane to reduce air-flow and subsequent heat loss. Air change rates (air changes per hour, or ACH) were calculated from air-leakage rates in each of the buildings. Data analysis demonstrated that the VOC levels in the test house were consistently higher than those established in the control house.
3
Madrzykowski, aniel, Craig Weinschenk, and Joseph Willi. Exposing Fire Service Hose in a Flashover Chamber. UL's Fire Safety Research Institute, April 2018. http://dx.doi.org/10.54206/102376/tkog7594.
Full textAbstract:
At the request of the Fire Department City of New York (FDNY), UL’s Fire Safety Research Institute (FSRI) instrumented and documented a series of 12 thermal exposure hose experiments that were conducted in the burn compartment of an FDNY flashover simulator. The main objective of the experiments was to observe the performance of fire hoses exposed to the heat flux from flaming hot gas layer conditions above the hose. FDNY collected a variety of hose types that represented a cross section of commercially available materials and construction methods. The thermal exposures generated in the burn compartment were measured. The fire experiments were stopped once the hose being examined began to lose water through the wall of the hose. All of the hoses lost water through their wall, although the size of the holes and the amount of water leakage varied. While the burn compartment provided a “fire room environment” and different types of hose failures were demonstrated, the thermal exposure within the compartment was not demonstrated to be repeatable. Therefore it is not possible to develop a comparable rank or rating of the fire resistance of these hoses from this series of experiments.
4
Rodriguez-Anderson, Santiago. Sensible Air to Air Heat Recovery Strategies in a Passive House. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2121.
Full text
5
Kedzierski, M. A., W. V. Payne, and H. M. Skye. Thermal energy storage for the NIST net-zero house heat pump. Gaithersburg, MD: National Institute of Standards and Technology, September 2018. http://dx.doi.org/10.6028/nist.tn.2005.
Full text
6
Chiel, Elad, and Christopher J. Geden. Development of sustainable fly management tools in an era of global warming. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7598161.bard.
Full textAbstract:
House flies (Muscadomestica) are global pests of animal agriculture, causing major annoyance, carrying pathogens among production facilities and humans and thus have profound impacts on animal comfort and productivity. Successful fly control requires an integrated pest management (IPM) approach that includes elements of manure management, mass trapping, biological control, and selective insecticide use. Insecticidal control of house flies has become increasingly difficult due to the rapidity with which resistance develops, even to new active ingredients. Global climate change poses additional challenges, as the efficacy of natural enemies is uncertain under the higher temperatures that are predicted to become more commonplace in the future. The two major objectives of this research project were: 1) to develop a cost-effective autodissemination application method of Pyriproxifen (PPF), an insect growth regulator, for controlling house flies; 2) to study the effect of increasing temperatures on the interactions between house flies and their principal natural enemies. First, we collected several wild house fly populations in both countries and established that most of them are susceptible to PPF, although one population in each country showed initial signs of PPF-resistance. An important finding is that the efficacy of PPF is substantially reduced when applied in cows’ manure. We also found that PPF is compatible with several common species of parasitoids that attack the house fly, thus PPF can be used in IPM programs. Next, we tried to develop “baited stations” in which house flies will collect PPF on their bodies and then deliver and deposit it in their oviposition sites (= autodissemination). The concept showed potential in lab experiments and in outdoor cages trials, but under field conditions the station models we tested were not effective enough. We thus tested a somewhat different approach – to actively release a small proportion of PPF-treated flies. This approach showed positive results in laboratory experiments and awaits further field experiments. On the second topic, we performed two experimental sets: 1) we collected house flies and their parasitoids from hot temperature and mild temperature areas in both countries and, by measuring some fitness parameters we tested whether the ones collected from hot areas are better adapted to BARD Report - Project 4701 Page 2 of 16 heat. The results showed very little differences between the populations, both of flies and parasitoids. 2) A “fast evolution” experiment, in which we reared house flies for 20 generations under increasing temperatures. Also here, we found no evidence for heat adaptation. In summary, pyriproxyfen proved to be a highly effective insect growth regulator for house flies that is compatible with it’s natural enemies. Although our autodissemination stations yielded disappointing results, we documented the proportion of flies in a population that must be exposed to PPF to achieve effective fly control. Both the flies and their principal parasitoids show no evidence for local adaptation to high temperatures. This is an encouraging finding for biological control, as our hypothesis was that the fly would be adapting faster to high temperatures than the parasitoids. BARD Report - Project 4701 Page 3 of 16
7
Madrzykowski, Daniel, and Craig Weinschenk. Understanding and Fighting Basement Fires. UL Firefighter Safety Research Institute, August 2018. http://dx.doi.org/10.54206/102376/etsa5492.
Full textAbstract:
Many firefighters have been injured or killed while trying to extinguish a basement fire or a fire on a level below them. Prior research has shown basement fires present a high risk to firefighters. This risk stems from unexpected floor collapse and high heat. Prior research also indicated the tools that firefighters have traditionally used to determine the structural integrity of the floor offer little value with lightweight construction. Past experiments in small basements have indicated that the most effective method of fighting a basement fire may be from the exterior of the building. This study went beyond earlier research by increasing the size of the basement and incorporating three different ventilation and access conditions to the basement. Those access conditions include no exterior access to the basement, limited exterior access to the basement, and exterior access to the basement. The results of the experiments show the importance of identifying a basement fire, controlling ventilation and flowing an effective hose stream into the basement from a position of advantage, as soon as possible. These experiments highlighted the importance of identifying a basement fire during size-up and subsequently choosing the appropriate tactics that coordinate ventilation with suppression. In all experiments, the basement fire were ventilation limited. Additional ventilation without suppression was shown in to increase the hazard to any occupants trapped in the structure. Various nozzles and appliances were used to flow water into the basement. Water streams applied through the floor, through a small window remote from the seat of the fire, and through a basement level access door controlled the fire and reduced the hazard throughout the structure. Effective water application into the basement cooled the fire gases to prevent flashover, slowed the destruction of the structure, and reduced the hazard from fire. This action made entry conditions into a basement with active burning possible for a fully protected firefighter. Effective water application also supported search operations and reduced the threat from heat and toxic gases for any trapped occupants. Occupants isolated from the fire environment by a closed door or other means were provided addition protection when compared with conditions in rooms open to the fire environment.
8
Zevotek, Robin, Keith Stakes, and Joseph Willi. Impact of Fire Attack Utilizing Interior and Exterior Streams on Firefighter Safety and Occupant Survival: Full-Scale Experiments. UL Firefighter Safety Research Institute, January 2018. http://dx.doi.org/10.54206/102376/dnyq2164.
Full textAbstract:
As research continues into how fire department interventions affect fire dynamics in the modern fire environment, questions continue to arise on the impact and implications of interior versus exterior fire attack on both occupant survivability and firefighter safety. This knowledge gap and lack of previous research into the impact of fire streams has driven the need for further research into fire department interventions at structure fires with a focus on hose streams and suppression tactics. As the third report in the project “Impact of Fire Attack Utilizing Interior and Exterior Streams on Firefighter Safety and Occupant Survival”, this report expands upon the fire research conducted to date by analyzing how firefighting tactics, specifically suppression methods, affect the thermal exposure and survivability of both building occupants and firefighters in residential structures. • Part I: Water Distribution • Part II: Air Entrainment • Part III: Full-Scale Residential Fire Experiments. This report evaluates fire attack in residential structures through twenty-six full-scale structure fire experiments. Two fire attack methods, interior and transitional, were preformed at UL’s large fire lab in Northbrook, IL, in a single-story 1,600 ft2 ranch test structure utilizing three different ventilation configurations. To determine conditions within the test structure it was instrumented for temperature, pressure, gas velocity, heat flux, gas concentration, and moisture content. Ad- ditionally, to provide information on occupant burn injuries, five sets of instrumented pig skin were located in pre-determined locations in the structure. The results were analyzed to determine consistent themes in the data. These themes were evaluated in conjunction with a panel of fire service experts to develop 18 tactical considerations for fire ground operations. As you review the following tactical considerations it is important to utilize both these research results and your per- sonal experience to develop your department’s polices and implement these considerations during structural firefighting.
9
Willits, Daniel H., Meir Teitel, Josef Tanny, Mary M. Peet, Shabtai Cohen, and Eli Matan. Comparing the performance of naturally ventilated and fan-ventilated greenhouses. United States Department of Agriculture, March 2006. http://dx.doi.org/10.32747/2006.7586542.bard.
Full textAbstract:
The objectives of this project were to predict the performance of naturally and fan-ventilated greenhouses as a function of climate, type of crop, evaporative cooling and greenhouse size, and to estimate the effects of the two cooling systems on yield, quality and disease development in the different crops under study. Background In the competitive field of greenhouse cultivation, growers and designers in both the US and Israel are repeatedly forced to choose between naturally ventilated (NV) and fan ventilated (FV) cooling systems as they expand their ranges in an effort to remain profitable. The known advantages and disadvantages of each system do not presently allow a clear decision. Whether essentially zero operating costs can offset the less dependable cooling of natural ventilation systems is question this report hopes to answer. Major Conclusions US It was concluded very early on that FV greenhouses without evaporative pad cooling are not competitive with NV greenhouses during hot weather. During the first year, the US team found that average air temperatures were always higher in the FV houses, compared to the NV houses, when evaporative pad cooling was not used, regardless of ventilation rate in the FV houses or the vent configuration in the NV houses. Canopy temperatures were also higher in the FV ventilated houses when three vents were used in the NV houses. A second major conclusion was that the US team found that low pressure fogging (4 atm) in NV houses does not completely offset the advantage of evaporative pad cooling in FV houses. High pressure fog (65 atm) is more effective, but considerably more expensive. Israel Experiments were done with roses in the years 2003-2005 and with tomatoes in 2005. Three modes of natural ventilation (roof, side and side + roof openings) were compared with a fan-ventilated (with evaporative cooling) house. It was shown that under common practice of fan ventilation, during summer, the ventilation rate is usually lower with NV than with FV. The microclimate under both NV and FV was not homogeneous. In both treatments there were strong gradients in temperature and humidity in the vertical direction. In addition, there were gradients that developed in horizontal planes in a direction parallel to the direction of the prevailing air velocity within the greenhouse. The gradients in the horizontal direction appear to be larger with FV than with NV. The ratio between sensible and latent heat fluxes (Bowen ratio) was found to be dependent considerably on whether NV or FV is applied. This ratio was generally negative in the naturally ventilated house (about -0.14) and positive in the fan ventilated one (about 0.19). Theoretical models based on Penman-Monteith equation were used to predict the interior air and crop temperatures and the transpiration rate with NV. Good agreement between the model and experimental results was obtained with regard to the air temperature and transpiration with side and side + roof ventilation. However, the agreement was poor with only roof ventilation. The yield (number of rose stems longer than 40 cm) was higher with FV
10
Fire fighter collapses at the fire house and subsequently dies due to heart arrhythmia secondary to myocardial sarcoidosis - New Jersey. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, November 2000. http://dx.doi.org/10.26616/nioshfffacef200031.
Full text