37 research outputs found
Appendix 4: Search strategies
OBJECTIVE: To systematically review all meta-analyses that included outpatient sub-analyses or network meta-analyses with medications treatment comparisons in order to study the clinical benefits of these deimplemented medications in the outpatient setting
Measuring Black Hole Spin by the Continuum-Fitting Method: Effect of Deviations from the Novikov-Thorne Disc Model
The X-ray spectra of accretion discs of eight stellar-mass black holes have
been analyzed to date using the thermal continuum fitting method, and the
spectral fits have been used to estimate the spin parameters of the black
holes. However, the underlying model used in this method of estimating spin is
the general relativistic thin-disc model of Novikov & Thorne, which is only
valid for razor-thin discs. We therefore expect errors in the measured values
of spin due to inadequacies in the theoretical model. We investigate this issue
by computing spectra of numerically calculated models of thin accretion discs
around black holes, obtained via three-dimensional general relativistic
magnetohydrodynamic (GRMHD) simulations. We apply the continuum fitting method
to these computed spectra to estimate the black hole spins and check how
closely the values match the actual spin used in the GRMHD simulations. We find
that the error in the dimensionless spin parameter is up to about 0.2 for a
non-spinning black hole, depending on the inclination. For black holes with
spins of 0.7, 0.9 and 0.98, the errors are up to about 0.1, 0.03 and 0.01
respectively. These errors are comparable to or smaller than those arising from
current levels of observational uncertainty. Furthermore, we estimate that the
GRMHD simulated discs from which these error estimates are obtained correspond
to effective disc luminosities of about 0.4-0.7 Eddington, and that the errors
will be smaller for discs with luminosities of 0.3 Eddington or less, which are
used in the continuum-fitting method. We thus conclude that use of the
Novikov-Thorne thin-disc model does not presently limit the accuracy of the
continuum-fitting method of measuring black hole spin.Comment: 13 pages, 7 figures, accepted for publication in MNRAS. v2: fixed
typo in author name, updated acknowledgment
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Understanding family dynamics in a cross-cultural sample: a multi-national study
The Family Systems Circumplex Model posits that balanced levels of cohesion and adaptability are associated with positive familial outcomes, whereas extremely high or low levels of these factors are associated with deleterious outcomes. Despite the popularity and utility of this model in Western cultures, there is a dearth of empirical data supporting its use in more culturally diverse contexts. The current, preregistered study assessed the Family Circumplex Model, cultural factors, and emerging adult outcomes across seven countries (i.e., China, Iran, Nigeria, Switzerland, Turkey, the United Kingdom, and the United States). Participants were N = 3,593 emerging adults, mostly self-identifying as women (71.3%). Collaborators were participants in Psi Chi’s Network for International Collaborative Exchange (NICE) and administered measures related to family dynamics and cultural orientation to participants in a random order. Results indicated that the Family Circumplex Model did not fit cross-culturally. As such, a new model was adapted, the Expanded Circumplex Model, which demonstrated invariance across samples and between women and men. The Expanded Circumplex Model retained 6 constructs with differences regarding the separation of disengagement into 2 variables and the combining of adaptive flexibility and cohesion. The current study suggests that the cultural context in which family dynamics occur should be taken into consideration when conceptualizing family dynamics theory and measurement. Future work should seek to replicate and further apply the Expanded Circumplex Model to familial outcomes
Stereoselective epimerizations of glycosyl thiols
Glycosyl thiols are widely used in stereoselective S-glycoside synthesis. Their epimerization from 1,2-trans to 1,2-cis thiols (e.g., equatorial to axial epimerization in thioglucopyranose) was attained using TiCl4, while SnCl4 promoted their axial-to-equatorial epimerization. The method included application for stereoselective β-d-manno- and β-l-rhamnopyranosyl thiol formation. Complex formation explains the equatorial preference when using SnCl4, whereas TiCl4 can shift the equilibrium toward the 1,2-cis thiol via 1,3-oxathiolane formation.The authors thank Science Foundation Ireland for an IvP
award (Grant Number 12/IA/1398) cofunded by the
European Regional Development Fund (Grant Number 14/
SP/2710). The Irish Research Council can also be thanked
for a scholarship award to M. McKinney.peer-reviewed2018-10-1
Marketing Medical Lab and Musical Theatre Programs: How Two Class Projects Put Principles Into Practice
Students in the BUMK4000 Marketing Management course welcomed the directors of two academic programs, Musical Theatre and Medical Laboratory Technology, as clients. Following extensive interviews, the students worked several weeks on a detailed marketing plan for each program. The students updated SSU Marketing and Communications of their efforts and assured their proposals aligned with planned university marketing and branding. The groups presented their plans to the directors at the end of the semester as professionally prepared materials suitable for actual, practical marketing
Stereoselective epimerizations of glycosyl thiols
Glycosyl thiols are widely used in stereoselective S-glycoside synthesis. Their epimerization from 1,2-trans to 1,2-cis thiols (e.g., equatorial to axial epimerization in thioglucopyranose) was attained using TiCl4, while SnCl4 promoted their axial-to-equatorial epimerization. The method included application for stereoselective β-d-manno- and β-l-rhamnopyranosyl thiol formation. Complex formation explains the equatorial preference when using SnCl4, whereas TiCl4 can shift the equilibrium toward the 1,2-cis thiol via 1,3-oxathiolane formation.The authors thank Science Foundation Ireland for an IvP
award (Grant Number 12/IA/1398) cofunded by the
European Regional Development Fund (Grant Number 14/
SP/2710). The Irish Research Council can also be thanked
for a scholarship award to M. McKinney.peer-reviewed2018-10-1
Free Flap Reconstruction of Self-Inflicted Submental Gunshot Wounds
In this study, we review outcomes for 15 patients with self-inflicted submental gunshot wounds requiring free flap reconstruction. Patients presented to two tertiary care centers over a 7-year period. Mean age was 46 years (range, 16 to 76 years), 67% (n = 10) had a psychiatric history, and four were known to abuse illicit substances. Patients with oromandibular involvement required on average a total of 2.8 procedures, and those with midface (3.7) or combined defects (6) required more total procedures (p = 0.21). Donor sites included osteocutaneous radial forearm (n = 8), fibula (n = 4), fasciocutaneous radial forearm (n = 5), and anterior lateral thigh (n = 1). Median length of hospitalization was 8 days. Overall complication rate was 33% (n = 5), and included hematoma (n = 1), fistula (n = 1), and mandibular malunion (n = 2). Most patients were able to tolerate a regular or soft diet (92%), maintain oral competency (58%), and demonstrate intelligible speech (92%) at a median time to follow-up of 12 months. Despite the devastating nature of this injury, free flap reconstruction of self-inflicted submental gunshot wounds results in acceptable functional results for the majority of patients
Effects of inhaled tier-2 diesel engine exhaust on immunotoxicity in a rat model: A hazard identification study. Part II. Immunotoxicology
Diesel exhaust (DE) is an air pollutant containing gaseous compounds and particulate matter. Diesel engines are common on gas extraction and oil sites, leading to complex DE exposure to a broad range of compounds through occupational settings. The US EPA concluded that short-term exposure to DE leads to allergic inflammatory disorders of the airways. To further evaluate the immunotoxicity of DE, the effects of whole-body inhalation of 0.2 and 1 mg/m3 DE (total carbon; 6 h/d for 4 days) were investigated 1-, 7-, and 27-days post exposure in Sprague-Dawley rats using an occupationally relevant exposure system. DE exposure of 1 mg/m3 increased total cellularity, number of CD4+ and CD8+ T-cells, and B-cells at 1 d post-exposure in the lung lymph nodes. At 7 d post-exposure to 1 mg/m3, cellularity and the number of CD4+ and CD8+ T-cells decreased in the LLNs. In the bronchoalveolar lavage, B-cell number and frequency increased at 1 d post-exposure, Natural Killer cell number and frequency decreased at 7 d post-exposure, and at 27 d post-exposure CD8+ T-cell and CD11b+ cell number and frequency decreased with 0.2 mg/m3 exposure. In the spleen, 0.2 mg/m3 increased CD4+ T-cell frequency at 1 and 7 d post-exposure and at 27 d post-exposure increased CD4+ and CD8+ T-cell number and CD8+ T-cell frequency. B-cells were the only immune cell subset altered in the three tissues (spleen, LLNs, and BALF), suggesting the induction of the adaptive immune response. The increase in lymphocytes in several different organ types also suggests an induction of a systemic inflammatory response occurring following DE exposure. These results show that DE exposure induced modifications of cellularity of phenotypic subsets that may impair immune function and contribute to airway inflammation induced by DE exposure in rats