1,037 research outputs found
Development and evaluation of an impedance cardiographic system to measure cardiac output and other cardiac parameters Final progress report 1 Jul. 1969 - 31 Dec. 1970
Performance of impedance cardiograph for measuring heart rate and body fluid
Development and Evaluation of an Impedance Cardiographic System to Measure Cardiac Output and Other Cardiac Parameters, 1 July 1968 - 30 June 1969
Impedance cardiographic system to measure cardiac output and cardiovascular function
Cardiac output and cardiac contractility by impedance cardiography during exercise of runners
Most of the solid state electronic engineering of the system now generally known as the Minnesota Impedance Cardiograph was performed with the support of a five-year contract, NAS9-4500, with the NASA Lyndon B. Johnson Space Center, Houston, Texas. This contract ran from 1965 to 1970. In addition to the engineering design and development of the hardware, the contract called for testing on both animals and human subjects. This project also provided funds to construct twenty impedance cardiographs and place them in selected research and clinical facilities for further evaluation. This, then, led to the First Symposium on Impedance Cardiography, held at the NASA Lyndon B. Johnson Space Center, Houston, Texas, 2-4 June 1969. Twenty-four excellent papers were presented
Development and evaluation of an impedance cardiographic system to measure cardiac output and other cardiac parameters, July 1, 1967 - June 30, 1968
Impedance cardiograph for monitoring heart functions, and program for computing stroke volume and cardiac output from thoracic impedance changes during cardiac cycl
A further investigation of the cytochrome b5–cytochrome c complex
J Biol Inorg Chem (2003) 8: 777–786The interaction of reduced rabbit cytochrome
b5 with reduced yeast iso-1 cytochrome c has been studied through the analysis of 1H–15N HSQC spectra, of 15N longitudinal (R1) and transverse (R2) relaxation rates, and of the solvent exchange rates of protein backbone amides. For the first time, the adduct has been investigated also from the cytochrome c side. The analysis of the NMR data was integrated with docking calculations. The result is that cytochrome b5 has two
negative patches capable of interacting with a single positive surface area of cytochrome c. At low protein concentrations and in equimolar mixture, two different 1:1 adducts are formed. At high concentration and/or
with excess cytochrome c, a 2:1 adduct is formed. All the species are in fast exchange on the scale of differences in chemical shift. By comparison with literature data, it
appears that the structure of one 1:1 adduct changes with the origin or primary sequence of cytochrome b5
Soils of a Mediterranean hot spot of biodiversity and endemism (Sardinia, Tyrrhenian Islands) are inhabited by pan-European, invasive species of <i>Hypocrea/Trichoderma</i>
We have used a Mediterranean hot spot of biodiversity
(the Island of Sardinia) to investigate the impact
of abiotic factors on the distribution of species of the
common soil fungus Trichoderma. To this end, we
isolated 482 strains of Hypocrea/Trichoderma from 15
soils comprising undisturbed and disturbed environments
(forest, shrub lands and undisturbed or extensively
grazed grass steppes respectively). Isolates
were identified at the species level by the oligonucleotide
BarCode for Hypocrea/Trichoderma (Trich
OKEY), sequence similarity analysis (TrichoBLAST)
and phylogenetic inferences. The majority of the
isolates were positively identified as pan-European
and/or pan-global Hypocrea/Trichoderma species
from sections Trichoderma and Pachybasium, comprising
H. lixii/T. harzianum, T. gamsii, T. spirale, T.
velutinum, T. hamatum, H. koningii/T. koningii, H.
virens/T. virens, T. tomentosum, H. semiorbis, H.
viridescens/T. viridescens, H. atroviridis/T. atroviride,
T. asperellum, H. koningiopsis/T. koningiopsis and
Trichoderma sp. Vd2. Only one isolate represented
a new, undescribed species belonging to the
Harzianum–Catoptron Clade. Internal transcribed spacer sequence analysis revealed only one potentially
endemic internal transcribed spacer 1 allele of
T. hamatum. All other species exhibited genotypes
that were already found in Eurasia or in other
continents. Only few cases of correlation of species
occurrence with abiotic factors were recorded. The
data suggest a strong reduction of native Hypocrea/
Trichoderma diversity, which was replaced by extensive
invasion of species from Eurasia, Africa and the
Pacific Basin
The branch processes of vortex filaments and Hopf Invariant Constraint on Scroll Wave
In this paper, by making use of Duan's topological current theory, the
evolution of the vortex filaments in excitable media is discussed in detail.
The vortex filaments are found generating or annihilating at the limit points
and encountering, splitting, or merging at the bifurcation points of a complex
function . It is also shown that the Hopf invariant of knotted
scroll wave filaments is preserved in the branch processes (splitting, merging,
or encountering) during the evolution of these knotted scroll wave filaments.
Furthermore, it also revealed that the "exclusion principle" in some chemical
media is just the special case of the Hopf invariant constraint, and during the
branch processes the "exclusion principle" is also protected by topology.Comment: 9 pages, 5 figure
A HPLC-Based Chloramphenicol Acetyltransferase Assay for Assessing Hair Growth: Comparison of the Sensitivity of UV and Fluorescence Detection
Peer Reviewe
Creating comprehensive, youth-centered culturally appropriate sex education: What do young gay, bisexual and questioning men want?
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106604/1/Creating comprehensive, youth-centered culturally appropriate sex education What do young gay, bisexual and questioning men want.pd
Reconstructing ‘the Alcoholic’: Recovering from Alcohol Addiction and the Stigma this Entails
Public perception of alcohol addiction is frequently negative, whilst an important part of recovery is the construction of a positive sense of self. In order to explore how this might be achieved, we investigated how those who self-identify as in recovery from alcohol problems view themselves and their difficulties with alcohol and how they make sense of others’ responses to their addiction. Semi-structured interviews with six individuals who had been in recovery between 5 and 35 years and in contact with Alcoholics Anonymous were analysed using Interpretative Phenomenological Analysis. The participants were acutely aware of stigmatising images of ‘alcoholics’ and described having struggled with a considerable dilemma in accepting this identity themselves. However, to some extent they were able to resist stigma by conceiving of an ‘aware alcoholic self’ which was divorced from their previously unaware self and formed the basis for a new more knowing and valued identity
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