4,593 research outputs found
Australian attempt to internationalize accounting professional organizations
In 1928, the beginnings were laid for the International Accountants Corporation and Bookkeepers Institute of Australasia. This was followed in a few years by the International Institute of Accountants. This was an ambitious move to internationalize the professional accounting organizations of the world from Australia
Characterization of bacterial lipooligosaccharides by delayed extraction matrix-assisted laser desorption ionization time-of-flight mass spectrometry
Matrix-assisted laser desorption ionization (MALDI) with a time-of-flight analyzer has been used to analyze bacterial lipooligosaccharides (LOS). Crude LOS preparations from pathogenic strains of Haemophilus influenzae and Haemophilus ducreyi and a commercial preparation of lipopolysaccharide from Salmonella typhimurium were treated with hydrazine to remove O-linked fatty acids on the lipid A moiety. The resulting O-deacylated LOS forms were water soluble and more amenable to cocrystallization with standard MALDI matrices such as 2,5-dihydroxybenzoic acid and 1-hydroxyisoquinoline. Under continuous extraction conditions, O-deacylated LOS yielded broad peaks with abundant salt adducts as well as forming prompt fragments through β-elimination of phosphoric acid, that is, [M-H3PO4-H]. However, when a time delay was used between ionization and extraction (“delayed extraction”) a significant improvement was seen in both mass resolution and the stability of the molecular ions against β-elimination of phosphoric acid, especially in the negative-ion mode. Both an external two-point calibration and an internal single-point calibration were used to assign masses, the latter of which provided the highest degree of accuracy (better than 0.01% in most cases). At higher laser powers, the LOS molecules cleave readily between the oligosaccharide and lipid A moieties yielding a number of prompt fragments. Postsource decay (PSD) analysis of selected molecular ions provided a set of fragments similar to those seen in the linear spectra, although they were more limited in number because they were derived from a single LOS-glycoform. Both the prompt and PSD fragments provided important structural information, especially in assigning the phosphate and phosphoethanolamine substitution pattern of the lipid A and oligosaccharide portions of LOS. Last, with the addition of ethylenediaminetetraacetic acid followed by pulsed sonication, the relatively insoluble (and impure) LOS preparations yielded MALDI spectra similar to the O-deacylated LOS, although these intact LOS preparations required higher laser powers to ionize and were generally more affected by competing impurities
Evaluating the Effectiveness of Undergraduate Clinical Education Programs
Medical schools should use a variety of measures to evaluate the effectiveness of their clinical curricula. Both outcome measures and process measures should be included, and these can be organized according to the four-level training evaluation model developed by Donald Kirkpatrick. Managing evaluation data requires the institution to employ deliberate strategies to monitor signals in real-time and aggregate data so that informed decisions can be made. Future steps in program evaluation includes increased emphasis on patient outcomes and multi-source feedback, as well as better integration of existing data sources
Relationship of age and hypertension to neuropsychological test performance
Young adult (X- = 29) and middle aged (X- =50) hypertensive and normotensive subjects were compared with respect to seven neuropsychological test scores derived from tests on the Halstead-Reitan battery. Age main effects, with inferior performance for the middle aged subjects, were observed for the localization and time portions of the Tactile Performance Test (TPT) and for the Trail Making A test. The multivariate age effect was significant for the composite of seven scores. A multivariate blood pressure main effect was obtained and main effect blood pressure was significant for the category test; hypertensives made more errors than normotensives. A blood pressure by age interaction was observed for finger tapping scores and the TPT-Memory scores with larger differences between hypertensives and normotensives for the younger than for the middle aged group. Results were discussed in terms of previous studies of age and hypertension with the WAIS, the Primary Mental Abilities Test and serial reaction time measures. The poor prediction of hypertensive status from individual neuropsychological test scores was emphasized and readers were cautioned not to conclude that essential hypertensives, as a group, can be characterized as brain damaged
Infantile spasms (West syndrome): update and resources for pediatricians and providers to share with parents
Background Infantile spasms (IS; West syndrome) is a severe form of encephalopathy that typically affects infants younger than 2 years old. Pediatricians, pediatric neurologists, and other pediatric health care providers are all potentially key early contacts for families who have an infant with IS. The objective of this article is to assist pediatric health care providers in the detection of the disease and in the counseling and guidance of families who have an infant with IS.
Methods Treatment guidelines, consensus reports, and original research studies are reviewed to provide an update regarding the diagnosis and treatment of infants with IS. Web sites were searched for educational and supportive resource content relevant to providers and families of patients with IS.
Results Early detection of IS and pediatrician referral to a pediatric neurologist for further evaluation and initiation of treatment may improve prognosis. Family education and the establishment of a multidisciplinary continuum of care are important components of care for the majority of patients with IS. The focus of the continuum of care varies across diagnosis, initiation of treatment, and short- and long-term needs. Several on-line educational and supportive resources for families and caregivers of patients with IS were identified.
Conclusions Given the possibility of poor developmental outcomes in IS, including the emergence of other seizure disorders and cognitive and developmental problems, early recognition, referral, and treatment of IS are important for optimal patient outcomes. Dissemination of and access to educational and supportive resources for families and caregivers across the lifespan of the child with IS is an urgent need. Pediatric health care providers are well positioned to address these needs
Formation And Growth of Amorphous Phases By Solid-State Reaction In Elemental Composites Prepared By Cold-Working
The article originally appeared in Journal of Applied Physics 99, 083504 (2006) and may also be found at http://apl.aip.org/resource/1/applab/v45/i10/p1052_s1Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/83390/1/AtzmonVerhoevenJohnson_APL1984.pd
The HST Key Project on the Extragalactic Distance Scale. XV. A Cepheid Distance to the Fornax Cluster and Its Implications
Using the Hubble Space Telescope (HST) 37 long-period Cepheid variables have
been discovered in the Fornax Cluster spiral galaxy NGC 1365. The resulting V
and I period-luminosity relations yield a true distance modulus of 31.35 +/-
0.07 mag, which corresponds to a distance of 18.6 +/- 0.6 Mpc. This measurement
provides several routes for estimating the Hubble Constant. (1) Assuming this
distance for the Fornax Cluster as a whole yields a local Hubble Constant of 70
+/-18_{random} [+/-7]_{systematic} km/s/Mpc. (2) Nine Cepheid-based distances
to groups of galaxies out to and including the Fornax and Virgo clusters yield
Ho = 73 (+/-16)_r [+/-7]_s km/s/Mpc. (3) Recalibrating the I-band Tully-Fisher
relation using NGC 1365 and six nearby spiral galaxies, and applying it to 15
galaxy clusters out to 100 Mpc gives Ho = 76 (+/-3)_r [+/-8]_s km/s/Mpc. (4)
Using a broad-based set of differential cluster distance moduli ranging from
Fornax to Abell 2147 gives Ho = 72 (+/-)_r [+/-6]_s km/s/Mpc. And finally, (5)
Assuming the NGC 1365 distance for the two additional Type Ia supernovae in
Fornax and adding them to the SnIa calibration (correcting for light curve
shape) gives Ho = 67 (+/-6)_r [+/-7]_s km/s/Mpc out to a distance in excess of
500 Mpc. All five of these Ho determinations agree to within their statistical
errors. The resulting estimate of the Hubble Constant combining all these
determinations is Ho = 72 (+/-5)_r [+/-12]_s km/s/Mpc.Comment: Accepted for publication in the Astrophysical Journal, Apr. 10 issue
28 pages, 3 tables, 12 figures (Correct figures and abstract
History, College of Medicine: 1959-1968. Chapter 2: College Administration
Prepared for the Centennial of The Ohio State University
Recombination and its impact on the genome of the haplodiploid parasitoid wasp Nasonia
Homologous meiotic recombination occurs in most sexually reproducing organisms, yet its evolutionary advantages are elusive. Previous research explored recombination in the honeybee, a eusocial hymenopteran with an exceptionally high genome-wide recombination rate. A comparable study in a non-social member of the Hymenoptera that would disentangle the impact of sociality from Hymenoptera-specific features such as haplodiploidy on the evolution of the high genome-wide recombination rate in social Hymenoptera is missing. Utilizing single-nucleotide polymorphisms (SNPs) between two Nasonia parasitoid wasp genomes, we developed a SNP genotyping microarray to infer a high-density linkage map for Nasonia. The map comprises 1,255 markers with an average distance of 0.3 cM. The mapped markers enabled us to arrange 265 scaffolds of the Nasonia genome assembly 1.0 on the linkage map, representing 63.6% of the assembled N. vitripennis genome. We estimated a genome-wide recombination rate of 1.4-1.5 cM/Mb for Nasonia, which is less than one tenth of the rate reported for the honeybee. The local recombination rate in Nasonia is positively correlated with the distance to the center of the linkage groups, GC content, and the proportion of simple repeats. In contrast to the honeybee genome, gene density in the parasitoid wasp genome is positively associated with the recombination rate; regions of low recombination are characterized by fewer genes with larger introns and by a greater distance between genes. Finally, we found that genes in regions of the genome with a low recombination frequency tend to have a higher ratio of non-synonymous to synonymous substitutions, likely due to the accumulation of slightly deleterious non-synonymous substitutions. These findings are consistent with the hypothesis that recombination reduces interference between linked sites and thereby facilitates adaptive evolution and the purging of deleterious mutations. Our results imply that the genomes of haplodiploid and of diploid higher eukaryotes do not differ systematically in their recombination rates and associated parameters.Publisher PDFPeer reviewe
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