Effects of chest wall compressions in kittens

1982 ◽  
Vol 60 (10) ◽  
pp. 1241-1246 ◽  
Author(s):  
T. Trippenbach ◽  
C. Gaultier ◽  
L. Cooper

Effects of chest compressions on the pattern of breathing were studied in pentobarbital anaesthetized 9- to 11-day-old kittens before and after vagotomy. The chest was compressed by means of a micrometer at three levels (T1–4, T6–8, T9–11). In intact and vagotomized kittens, the group mean values of inspiratory time (tI), expiratory (tE) time, peak amplitude of the integrated phrenic activity (PHR) and its rate of rise (PHR/tI) during compressions were not different from those of the control breaths. On the other hand, in intact kittens during chest compressions variability of all the measured variables significantly increased. In the vagotomized kittens, variability of parameters other than inspiratory time was unaffected. Nevertheless we cannot exclude contribution of extravagal receptors in control of tE. The tE effects could be masked by the increased variability of the control value in vagotomized kittens. The effects of chest compression on the integrated phrenic activity were mostly dependent on the intact vagal feedback.

2017 ◽  
Vol 7 (2) ◽  
pp. 67 ◽  
Author(s):  
Mehmet Fatih Ocal

Integrating the properties of computer algebra systems and dynamic geometry environments, Geogebra became an effective and powerful tool for teaching and learning mathematics. One of the reasons that teachers use Geogebra in mathematics classrooms is to make students learn mathematics meaningfully and conceptually. From this perspective, the purpose of this study was to investigate whether instruction with Geogebra has effect on students’ achievements regarding their conceptual and procedural knowledge on the applications of derivative subject. This study adopted the quantitative approach with pre-test post-test control group true experimental design. The participants were composed of two calculus classrooms involving 31 and 24 students, respectively. The experimental group with 31 students received instruction with Geogebra while the control group received traditional instruction in learning the applications of derivative. Independent samples t-test was used in the analysis of the data gathered from students’ responses to Applications of Derivative Test which was subjected to them before and after teaching processes. The findings indicated that instruction with Geogebra had positive effect on students’ scores regarding conceptual knowledge and their overall scores. On the other hand, there was no significant difference between experimental and control group students’ scores regarding procedural knowledge. It could be concluded that students in both groups were focused on procedural knowledge to be successful in learning calculus subjects including applications of derivative in both groups. On the other hand, instruction with Geogebra supported students’ learning these subjects meaningfully and conceptually.


1987 ◽  
Vol 65 (11) ◽  
pp. 2656-2660 ◽  
Author(s):  
Alfredo Maestre Alvarez ◽  
Nicole Morel-Desrosiers ◽  
Jean-Pierre Morel

The standard enthalpies of transfer of ribose and arabinose from water to aqueous solutions of electrolytes (CaCl2, SrCl2, BaCl2, LaCl3, and GdCl3) have been measured at 25 °C. A method is described to calculate from these data the equilibrium constant and the enthalpy for the association between the cations and the complexing isomers of ribose. Mean values relative to these isomers are given: the constants vary from 2.0 to 4.3 and the enthalpies from −5.9 to −17.9 kJ mol−1 for the different cations studied. The thermodynamic properties of association are not related to the size nor to the charge of the complexed cation in a simple way. On the other hand, the enthalpies of reaction are linearly correlated to the entropies of reaction.


2020 ◽  
Vol 9 (5) ◽  
pp. 1584
Author(s):  
Yukako Nakashima ◽  
Takeji Saitoh ◽  
Hideki Yasui ◽  
Masahide Ueno ◽  
Kensuke Hotta ◽  
...  

Background: When a rescuer walks alongside a stretcher and compresses the patient’s chest, the rescuer produces low-quality chest compressions. We hypothesized that a stretcher equipped with wing boards allows for better chest compressions than the conventional method. Methods: In this prospective, randomized, crossover study, we enrolled 45 medical workers and students. They performed hands-on chest compressions to a mannequin on a moving stretcher, while either walking (the walk method) or riding on wings attached to the stretcher (the wing method). The depths of the chest compressions were recorded. The participants’ vital signs were measured before and after the trials. Results: The average compression depth during the wing method (5.40 ± 0.50 cm) was greater than during the walk method (4.85 ± 0.80 cm; p < 0.01). The average compression rates during the two minutes were 215 ± 8 and 217 ± 5 compressions in the walk and wing methods, respectively (p = ns). Changes in blood pressure (14 ± 11 vs. 22 ± 14 mmHg), heart rate (32 ± 13 vs. 58 ± 20 bpm), and modified Borg scale (4 (interquartile range: 2–4) vs. 6 (5–7)) were significantly lower in the wing method cohort compared to the walking cohort (p < 0.01). The rescuer’s size and physique were positively correlated with the chest compression depth during the walk method; however, we found no significant correlation in the wing method. Conclusions: Chest compressions performed on the stretcher while moving using the wing method can produce high-quality chest compressions, especially for rescuers with a smaller size and physique.


1992 ◽  
Vol 82 (2) ◽  
pp. 185-190 ◽  
Author(s):  
Roland Foulkes ◽  
Romana G. Ferrario ◽  
Patricia Salvati ◽  
Giuseppe Bianchi

1. Several observations support the hypothesis that in rats of the Milan hypertensive strain elevated levels of a circulating ouabain-like factor might normalize the elevated Na+ reabsorption, but, on the other hand, might contribute to the development of hypertension. 2. As the receptor occupancy of this endogenous factor seems to be reversible, the aim of our study was to test, in vitro, the hypothesis of its presence in isolated kidneys from Milan hypertensive rats by studying the response to exogenous ouabain before and after prolonged washing. 3. The kidneys were isolated from adult Milan hypertensive rats and from age-matched normotensive controls and ouabain was given at two different experimental time intervals: shortly (15 min) after washout or after a further 60 min of washout (75 min in total). Comparative experiments with the diuretic hydrochlorothiazide were performed using the same protocol. 4. Ouabain given after 15 min of perfusion caused an increase in renal vascular resistance, diuresis and natriuresis; these haemodynamic and tubular responses were similar in kidneys from both Milan hypertensive and Milan normotensive rats. If given after the washout period, ouabain caused a comparable increase in renal vascular resistance, but a significantly greater natriuresis in kidneys from Milan hypertensive rats as compared with kidneys from Milan normotensive rats. On the other hand, hydrochlorothiazide caused similar natriuresis in kidneys from both strains after washout. 5. These results support the hypothesis that a factor, capable of interacting with the ouabain receptor on the Na+/K+−ATPase of tubular cells, is present in the kidney of adult Milan hypertensive rats and that it can be removed by prolonged washout.


1975 ◽  
Vol 229 (2) ◽  
pp. 432-437 ◽  
Author(s):  
R Zimmer ◽  
R Lang

The rate of lactic acid (LA) permeation from brain tissue to venous blood and utilization in brain tissue was investigated in 13 isolated dog brains before and after an ischemic period of 3 min. LA concentration in the brain, cerebral blood flow, as well as the arteriovenous differneces of LA, glucose, and O2 were determined. LA concentration in cerebral tissue increased from a control value of 254 +/- 42 to 1,606 +/- 177 mumol/100 g brain tissue in the 2nd min after ischemia (mean values +/- SE). Before ischemia no release of LA was found, whereas in the 2nd min after ischemia LA permeation rate had increased to 25.1 +/- 8.5 mumol/100 g brain tissue per minute (P less than 0.005). Up to the 4th min after ischemia no net LA utilization was observed. Thereafter LA utilization increased rapidly and exceeded the LA permeation rate by a ratio of maximally 10:1 between the 12th and 21st min after ischemia. The O2 equivalent of the cerebral metabolic rate for lactate maximally amounted to 2.82 +/- 0.42 mumol-min-1-g-1 or 181 +/- 28%. LA output may be limited by passage of LA across the brain cell and the blood-brain barrier.


2020 ◽  
Vol 1 (3) ◽  
pp. 265-287
Author(s):  
Niall Keane

AbstractThe following examines Heidegger’s analysis of world and Dasein from a transcendental perspective. It is argued that Heidegger’s reflections on the interconnected themes of world and Dasein reveal the tensions that exist between the transcendental claims before and after Being and Time and the analysis of worldliness. It begins by looking at Heidegger’s early analysis of Husserl’s critique of psychologism and naturalism, assessing what this tells us about Heidegger’s analysis of world and nature. It subsequently addresses Heidegger’s transformation of Husserlian phenomenology, and intentionality in particular, arguing against interpreters who claim Heidegger’s interconnected concepts of Dasein and world are reducible to one another and hence phenomenologically problematic. In order to respond to this reading, the article examines the twin themes of, on the one hand, transcendental constitutive analysis in Heidegger’s work, Dasein as disclosive and ‘world entering’, and, on the other hand, the centrality of the world and the realm of nature as always more than Dasein’s constitutive relationship to it. In order to understand what Heidegger means by worldliness, the article will look at Heidegger’s reflections on nature as the world’s other, which nonetheless needs to be understood on the basis of worldliness.


2014 ◽  
Vol 24 (1) ◽  
pp. 67
Author(s):  
Γεώργιος ΚΑΡΔΑΡΑΣ

<!--[if gte mso 9]><xml> <o:DocumentProperties> <o:Template>Normal.dotm</o:Template> <o:Revision>0</o:Revision> <o:TotalTime>0</o:TotalTime> <o:Pages>1</o:Pages> <o:Words>152</o:Words> <o:Characters>870</o:Characters> <o:Company>獫票楧栮捯洀鉭曮㞱Û뜰⠲쎔딁烊皭〼፥ᙼ䕸忤઱</o:Company> <o:Lines>7</o:Lines> <o:Paragraphs>1</o:Paragraphs> <o:CharactersWithSpaces>1068</o:CharactersWithSpaces> <o:Version>12.0</o:Version> </o:DocumentProperties> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:Zoom>0</w:Zoom> <w:TrackMoves>false</w:TrackMoves> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridHorizontalSpacing>18 pt</w:DrawingGridHorizontalSpacing> <w:DrawingGridVerticalSpacing>18 pt</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>0</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:DontGrowAutofit/> <w:DontAutofitConstrainedTables/> <w:DontVertAlignInTxbx/> </w:Compatibility> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="276"> </w:LatentStyles> </xml><![endif]--> <!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> <!--StartFragment--> <p style="margin: 0cm -38.3pt 0pt -1cm; text-align: center" class="MsoNormal" align="center">&nbsp;</p><strong><p><br /><strong>Between Attila and Bajan. Byzantium and the nomads from 453 to 558</strong></p><p><br />&nbsp;The paper highlights the relations of Byzantium with the nomads in the period between the collapse of the Hunnic hegemony in Central Europe and the coming of the Avars to the northern frontiers of the Empire. Taking into account the written testimonies, as well as the archaeological finds, the geographical area of the nomadic settlements, the conflicts and treaties with Byzantium, the role of the nomads in the Byzantine-Persian relations, the nomad mercenaries in the Byzantine army and certain Byzantine finds, as jewellery, swords, pendant capsule or other decorative motifs are considered. These relations are distinguished in two periods, before and after 491. During the first one, the Empire was able to control the activity of the nomads offering them settlement permit on Byzantine soil, while for the second is noted, beside the strong conflicts, the cultural influence of Byzantium through Christianity and, on the other hand, the nomadic influences on the Byzantine army.</p><p style="margin: 0cm -38.3pt 0pt -1cm; text-align: center" class="MsoNormal" align="center"><br /><br />&nbsp;</p><p>&nbsp;</p><p style="margin: 0cm -38.3pt 0pt -1cm; text-align: center" class="MsoNormal" align="center"><br /><br />&nbsp;</p></strong><p style="margin: 0cm -38.3pt 0pt -1cm; text-align: center" class="MsoNormal" align="center"><!--EndFragment--></p>


2021 ◽  
Vol 15 ◽  
pp. 55-71
Author(s):  
Irina Tkeshelashvili

Niniejszy tekst jest próbą ukazania propagandowej polityki i odpowiednich działań Federacji Rosyjskiej wobec Gruzji przed konfliktem w sierpniu 2008 r. i po jego zakończeniu. Po zakończeniu konfliktu w sierpniu 2008 r. te działania przekształciły się w wojnę informacyjną, która charakteryzuje się dążeniem rosyjskich władz do oddziaływania na gruzińską przestrzeń informacyjną. Russian Propaganda in Georgian Informational Space Before and After Conflict in August 2008 Given text represents an attempt to show propagandistic approach and relevant activities from Russian Federation towards Georgia before the conflict in August 2008 and afterwards. On the other hand, after the August 2008, the actions turned into a mode of information warfare, which became a growing tendency to influence Georgia’s information space.


Retos ◽  
2019 ◽  
pp. 83-88
Author(s):  
Raúl Baños ◽  
Emilio Arrayales

El objetivo de este estudio fue analizar como el clima motivacional creado por el docente de educación física (EF) puede predecir la satisfacción o el aburrimiento durante la clase. Participaron 680 estudiantes de Educación Secundaria Obligatoria (ESO) de las provincias de la Región de Murcia y Alicante (España) (339 chicos, 341 chicas; Medad = 14.83, DT = 1.45). Se utilizó un cuestionario compuesto por los siguientes instrumentos: Perceptions of Teahcer´s Emphassion Goals Questionnaire (PTEGQ), y Sport Satisfacción Instrument - PE (SSI-PE). Se realizaron análisis descriptivos, de correlación y regresión lineal simple con el SPSS v.22. Los resultados muestran valores medios altos en el clima de maestría y bajos en evitación-rendimiento. Con respecto al SSI-PE, los valores de la satisfacción en la clase de EF fueron altos y en aburrimiento medios. Por otro lado, el clima de maestría y aprobación social predijeron de forma positiva la satisfacción en la EF. Por su parte, el clima de evitación al rendimiento predijo de manera positiva el aburrimiento y el clima de maestría lo predijo de manera negativa. Los resultados obtenidos demuestran la importancia de crear sesiones con un clima de aprendizaje enfocado hacia la aprobación social y la maestría, ya que se relacionan con sensaciones de disfrute y evitar el clima de evitación-rendimiento.Abstract. The aim of this study was to analyze how the motivational climate created by the physical education teacher (PE) can predict satisfaction or boredom during class. 680 students of Compulsory Secondary Education from the provinces of the Region of Murcia and Alicante (Spain) was participated (339 boys, 341 girls, Mage = 14.83, SD = 1.45). A questionnaire composed by the following instruments Perceptions of Teachers' Emphasis Goals Questionnaire (PTEGQ) and Sport Satisfaction Instrument - PE (SSI-PE) was used. Descriptive, correlation and simple linear regression analyzes were performed with the SPSS v.22 software. The results show high mean values in the mastery climate and low mean values in the performance-avoidance. Regarding to SSI-PE, the values of satisfaction obtained in the PE class were high and in boredom were average. On the other hand, the mastery climate and social approval predicted positively the satisfaction in PE. On the other hand, the performance avoidance climate predicted positively the boredom and the mastery climate predicted it in a negative way. The results show the importance to create sessions with a learning climate focused on social approval and mastery, as they are related with feelings of enjoyment and avoid climates of avoidance-performance.


2008 ◽  
Vol 8 (3) ◽  
Author(s):  
Rahadi Wasi Bintoro ◽  
Riris Ardhanariswari ◽  
Rahman Permana

The governmental intervention through law and regulation have brought the elementary change in labour relationship, namely the nature of private and public, so that regulation thet released by government have in such a way broadness, not only in law aspect which relate with the job, but also before and after labour relationship. This concept have accommodated in Law Number 13 Year 2003 about labourness. Law No. 13 Year 2003 have given the arrangement about the protection of law for woman labour, such as the protection of law for underage woman labour, the protection of law for pregnant woman labour and the protection of law in the case of in working and take a rest. But in the other hand, in Law No. 13 Year 2003, there are weakness in giving protection for woman labour. Based on Article 10 sentence (1) and (3) Law No. 32 year 2004 about Local Governance, that besides political business abroad, defender, security, yustisi, fiscal and national monetary, and also religion become the business of local government. For the reason, Local government can release the furthermore regulation such as local regulation and also regent decree, utilize to arrange furthermore about labourness. Kata kunci : tenaga kerja, perusahaan, perlindungan hukum


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