Cardiac Massage: How Vigorous?

Longmore, D. B.; Rehahn, M.; Dipple, C.R.

doi:10.1016/s0140-6736(77)92870-7

Cited by 11 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of these were found from visual inspection of photographic broad-band sky survey plates (e.g. Kohoutek 1963;Abell 1966;Longmore 1977;Weinberger 1977;Longmore & Tritton 1980;Hartl & Tritton 1985). With the digitization of the same material, it is now possible to extend this work to lower surface brightnesses and to systematically search larger areas more efficiently .…”

Section: The Extremely Turquoise Halo Object Surveymentioning

confidence: 99%

ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central star★

Miszalski

Corradi

Boffin

et al. 2011

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We report on the discovery of ETHOS 1 (PN G068.1+11.0), the first spectroscopically confirmed planetary nebula (PN) from a survey of the SuperCOSMOS Science Archive for high‐latitude PNe. ETHOS 1 stands out as one of the few PNe to have both polar outflows (jets) travelling at 120 ± 10 km s−1 and a close binary central star. The light curve observed with the Mercator Telescope reveals an orbital period of 0.535 d and an extremely large amplitude (0.816 mag) due to irradiation of the companion by a very hot pre‐white dwarf. ETHOS 1 further strengthens the long‐suspected link between binary central stars of PNe (CSPN) and jets. The Isaac Newton Telescope/Intermediate Dispersion Spectrograph and Very Large Telescope (VLT) FORS spectroscopy of the CSPN reveals weak N iii, C iii and C iv emission lines seen in other close binary CSPN and suggests that many CSPN with these weak emission lines are misclassified close binaries. We present VLT FORS imaging and Manchester Echelle Spectrometer long‐slit observations from which a kinematic model of the nebula is built. An unusual combination of bipolar outflows and a spherical nebula conspires to produce an X‐shaped appearance. The kinematic age of the jets (1750 ± 250 yr kpc−1) is found to be more than that of the inner nebula (900 ± 100 yr kpc−1), consistent with previous studies of similar PNe. Emission‐line ratios of the jets are found to be consistent with that of reverse‐shock models for fast low‐ionization emitting regions (FLIERs) in PNe. Further large‐scale surveys for close binary CSPN will be required to securely establish whether FLIERs are launched by close binaries.

show abstract

Section: The Extremely Turquoise Halo Object Surveymentioning

confidence: 99%

ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central star★

Miszalski

Corradi

Boffin

et al. 2011

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

show abstract

“…The advisability of teaching this technique to first aiders continued to be debated (Chamberlain, Elliot and Melcher, 1975;Drummond, 1975;Drury, 1975;Green, 1975;Hewish, 1975;Longmore, Rehahn and Dipple, 1977;Lund and Skulberg, 1976;Makay, 1975;Williamson, 1975 (Newman, 1988, p.19) This action would therefore be introducing AEDs into yet more networks where other actors could further influence their trajectory towards universality. The campaign to raise money was apparently successful as the eventual achievement of the goal to place AEDs on the ambulances was attributed to many factors, including;…”

Section: Networkmentioning

confidence: 99%

Training lay-people to use automatic external defibrillators: Are all of their needs being met?

2006

View full text Add to dashboard Cite

This thesis draws upon data gathered during research undertaken with a grant from the Resuscitation Council (UK). It explores the use of Automatic External Defibrillators (AEDs) by laypeople, which is known as Public Access Defibrillation (PAD). Whilst an abundance of research has been undertaken about this phenomenon, it has predominately been conducted using quantitative methods; however the data I am using was collected using a qualitative approach. During the research, fifty-three semi-structured interviews were carried out. Most of these were with laypeople who had been trained to use AEDs, and nine involved those who delivered the training. These interviews were conducted at sites typical of those where these devices have been introduced, such as railway stations and airports. The geographical area of these locations covered the East and West Midlands, South and West Yorkshire, Lincolnshire and Essex. The aims of the research were quite broad and included exploring how to make training more realistic, how debriefing and support for those who had used an AED should be organised and how the interviewees perceived the technology inherent in the AED.This thesis reanalyses the data that was collected during that research and focuses on two themes. Firstly, some of the theories of technologies in transition are used to illustrate how AEDs were developed in a laboratory and progressed from that setting to become commonplace in public locations. The actor-network theory is adopted to argue that these technological devices exert an influence on the human actors in the networks that exist within society. Specifically, my analysis is informed by the work of Timmermans (1998; 1999; 1997) whose theories about external chest compressions I have developed and applied to AEDs. They suggest that these devices achieved universality, in part, through the influence of debates and medical protocols.One significant factor was that AEDs allowed for defibrillation to be redefined from a medical, to a first aid procedure. Eventually, using these devices was included in the protocols for first aid and this legitimised their use by laypeople. These theories are observable in the data through the interviewees" accounts of how they came to accept being trained to use AEDs. The experiences of those who had used an AED during a resuscitation attempt are provided and suggest that these are distressing and unpleasant events.Consequently, a key component of this thesis is a discussion of the necessity to provide psychological debriefing for those who have been involved in these incidents.The findings of this thesis suggest that laypeople who have used an AED usually have questions about the actions they took during the attempted resuscitation and need to address these with someone soon afterwards.

show abstract

“…Lo 14 was identified as a possible PN candidate by Longmore (1977), from the presence of a surrounding nebulosity on UK Schmidt plates. However, this nebulosity had previously been classified as a reflection nebula (vdBH 69) by van den Bergh & Herbst (1975).…”

Section: A P P E N D I X B : L O 1 4 a N D M Z 3 B1 Lo 14mentioning

confidence: 99%

ISO LWS observations of planetary nebula fine-structure lines

Liu

Barlow

Cohen

et al. 2001

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We have obtained 43–198 μm far‐infrared (IR) spectra for a sample of 51 Galactic planetary nebulae (PN) and protoplanetary nebulae (PPN), using the Long Wavelength Spectrometer (LWS) on board the Infrared Space Observatory (ISO). Spectra were also obtained of the former PN candidate Lo 14. The spectra yield fluxes for the fine‐structure lines [N ii] 122 μm, [N iii] 57 μm and [O iii] 52 and 88 μm emitted in the ionized regions and the [O i] 63‐ and 146‐μm and [C ii] 158‐μm lines from the photodissociation regions (PDRs), which have been used to determine electron densities and ionic abundances for the ionized regions and densities, temperatures and gas masses for the PDRs. The strong [N iii] and [O iii] emission lines detected in the LWS spectrum taken centred on Lo 14 could be associated with the nearby strong radio and infrared source G 331.5−0.1. We find that the electron densities yielded by the [O iii] 88 μm/52 μm doublet ratio are systematically lower than those derived from the optical [Ar iv] λ4740/λ4711 and [Cl iii] λ5537/λ5517 doublet ratios, which have much higher critical densities than the 52‐ and 88‐μm lines, suggesting the presence of density inhomogeneities in the nebulae. Ionic abundances, N+/H+,N2+/H+ and O2+/H+, as well as the N2+/O2+ abundance ratio, which provides a good approximation to the N/O elemental abundance ratio, are derived. Although ionic abundances relative to H+ deduced from the far‐IR fine‐structure lines are sensitive to the adopted electron density and the presence of density inhomogeneities, the strong dependence on the nebular physical conditions is largely cancelled out when N2+/O2+ is calculated from the 57 μm/(52 μm+88 μm) flux ratio, owing to the similarity of the critical densities of the lines involved. The temperatures and densities of the PDRs around 24 PN have been determined from the observed [O i] and [C ii] line intensity ratios. Except for a few objects, the deduced temperatures fall between 200 and 500 K, peaking around 250 K. The densities of the PDRs vary from 104–105 cm−3, reaching 3×105 cm−3 in some young compact PN. With a derived temperature of 1600 K and a density of 105 cm−3, the PDR of NGC 7027 is one of the warmest and at the same time one of the densest amongst the nebulae studied. For most of the PN studied, the [C ii]‐emitting regions contain only modest amounts of material, with gas masses ≲0.1 M⊙. Exceptional large PDR masses are found for a few nebulae, including NGC 7027, the bipolar nebulae M2‐9 and NGC 6302, the young dense planetary nebulae BD+30°3639, IC 418 and NGC 5315, and the old, probably recombining, nebulae IC 4406 and NGC 6072.

show abstract

Cardiac Massage: How Vigorous?

Cited by 11 publications

References 0 publications

ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central star★

ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central star★

Training lay-people to use automatic external defibrillators: Are all of their needs being met?

ISO LWS observations of planetary nebula fine-structure lines

Contact Info

Product

Resources

About