654 research outputs found
Valentin-Aslanyan/UFiT: UFiT v1.0:UFiT - Universal Fieldline Tracer Trace magnetic field lines in a range of magnetic geometries.
No full textRelease of UFiT. Currently calculates field line trajectories, mapping and squashing factor. Code outputs currently supported: DUMFRIC, Lare3d, ARMS.This package is intended to trace magnetic field lines and calculate the squashing factor Q. It is intended to read the outputs from a number of astrophysical codes, currently: ARMS, Lare3d and DUMFRIC; it saves the the results in a self-contained manner
A Journey to Inner Africa
No full textIn 1847, Russian military engineer and diplomat Egor Petrovich Kovalevsky embarked on a journey through what is today Egypt, Sudan, Eritrea, and Ethiopia, recording his impressions of a region in flux. Invited by Egyptian ruler Mohammed Ali to look for gold and construct mines in the area between the Blue and White Nile, Kovalevsky captured the social milieu of both elites and ordinary people as well as compiled a rich record of the Upper Nile’s climate and natural resources. A Journey to Inner Africa, masterfully translated into English for the first time by Anna Aslanyan, is both a tale of encounter between Russia and northern Africa and an important document in the history and development of the Russian imperial project
A Journey to Inner Africa
No full textIn 1847, Russian military engineer and diplomat Egor Petrovich Kovalevsky embarked on a journey through what is today Egypt, Sudan, Eritrea, and Ethiopia, recording his impressions of a region in flux. Invited by Egyptian ruler Mohammed Ali to look for gold and construct mines in the area between the Blue and White Nile, Kovalevsky captured the social milieu of both elites and ordinary people as well as compiled a rich record of the Upper Nile’s climate and natural resources. A Journey to Inner Africa, masterfully translated into English for the first time by Anna Aslanyan, is both a tale of encounter between Russia and northern Africa and an important document in the history and development of the Russian imperial project
Overcoming multilingual challenges: A Positive Psychotherapy approach to speech development in a bereaved child
No full textThis case study presents the therapeutic journey of a 3.5-year-old girl who experienced the sudden loss of her father and subsequently struggled with speech development. Raised in a multilingual family where Russian, Armenian, and Ukrainian were spoken, the child's linguistic landscape underwent significant shifts due to frequent relocations and familial changes. Through Positive Psychotherapy interventions, including drawing, sand play, and emotional exploration, the child gradually overcame emotional barriers and began to communicate effectively. This case highlights the importance of addressing emotional trauma in language development and demonstrates the efficacy of Peseschkian's Positive Psychotherapy in facilitating speech acquisition in children
Poststroke neurological improvement within 7 days is associated with subsequent deterioration
No full text<p><b>Background and Purpose:</b> Improvement in the National Institutes of Health Stroke Scale (NIHSS) 24 hours after stroke has been associated with subsequent neurological deterioration. We hypothesized that a similar association would be apparent for events occurring after 7 days, when acute changes from edema and herniation are less common. We evaluated the degree of NIHSS improvement at 7 days (recovery) as a predictor of subsequent neurological deterioration from day 7 to day 90.</p>
<p><b>Methods:</b> We studied all patients of the Glycine Antagonist (gavestinel) In Neuroprotection (GAIN) International Trial with ischemic stroke alive at day 7, excluding patients with hemorrhagic events and deaths from nonstroke-related causes. The GAIN International Trial was a randomized, double-blind, placebo-controlled, and parallel-group trial; because the study drug had no effect on stroke outcome, treatment groups were combined for this analysis. Neurological deterioration was assessed by the combined measure, including: (1) stroke-related events recorded as “serious adverse events,” (2) recurrent stroke recorded on a separate case report form, and (3) any NIHSS worsening.</p>
<p><b>Results:</b> Among 1187 patients included, 25% had >65% recovery. Deterioration was more prevalent in the group with >65% early recovery (15.5% versus 10.3%; P=0.01). Logistic regression modeling indicated that recovery was associated with subsequent neurological deterioration (odds ratio, 1.2; 95% CI, 1.1 to 1.3, per 10% recovery) after adjusting for age, NIHSS at 7 days, and stroke subtype.</p>
<p><b>Conclusions:</b> Substantial neurological recovery at 7 days is associated with subsequent neurological deterioration.</p>
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Tales From Bush House
No full textThis book is an oral history of the BBC World Service from the perspective of its broadcasters. The 'tales' are based on a variety of research materials - from ethnographic data to witness seminars. They are stories gifted to the editors by former and current staff and depict, in the words of John Tusa, former Managing Director of the World Service 'why journalists did what they did, why governments objected, why programmes mattered, why news counted'. Bush House was the home to 40 languages and hundreds of broadcasters who learned to work together, facing linguistic, technological and geopolitical challenges. It is a case study in 'actually existing cosmopolitanism' that paradoxically emerged from British colonialism. The book shows what it was like to work at Bush House over nearly eight decades and it captures its creative spirit and atmosphere.
It is based on a unique BBCWS-Open University collbaoration between the Hamid Ismailov, BBCWS's Writer-in-Residence, Marie Gillespie and Anna Aslanyan
Elevated pulse pressure during the acute period of ischemic stroke is associated with poor stroke outcome
No full text<p><b>Background:</b> It is controversial which component of blood pressure (BP) during acute period of stroke best predicts outcome. We hypothesized that elevated pulse pressure (PP), the difference between systolic BP (SBP) and diastolic BP (DBP), is independently associated with poor stroke outcome at 3 months.</p>
<p><b>Methods:</b> We analyzed both treatment groups from the Glycine Antagonist (Gavestinel) in Neuroprotection (GAIN) International trial (1455 ischemic stroke cases of mostly moderate severity). Cox proportional hazards and logistic regression modeling corrected for demography, medical history, heart rate, stroke severity, and clinical subtype.</p>
<p><b>Results:</b> Elevated weighted average PP during the first 60 hours was associated with poor outcome by mortality, Barthel index, National Institutes of Health Stroke Score (NIHSS) and Rankin scores. Elevated baseline PP was associated with Barthel index and Rankin score.</p>
<p><b>Conclusion:</b> Elevated PP is associated with poor stroke outcome at 3 months.</p>
Efficient calculation of atomic rate coefficients in dense plasmas
No full textModelling electron statistics in a cold, dense plasma by the Fermi-Dirac distribution leads to complications in the calculations of atomic rate coefficients. The Pauli exclusion principle slows down the rate of collisions as electrons must find unoccupied quantum states and adds a further computational cost. Methods to calculate these coefficients by direct numerical integration with a high degree of parallelism are presented. This degree of optimization allows the effects of degeneracy to be incorporated into a time-dependent collisional-radiative model. Example results from such a model are presented
Effect of reinforcing submicron SiC particles on the wear of electrolytic NiP coatings Part 2: Bi-directional sliding
No full textAs-plated and heat-treated electrodeposited NiP and composite NiP-SiC coatings were investigated in bi-directional ball-on-disc sliding tests. All tests were performed under gross slip conditions. Heat treatment decreases the wear volume loss during fretting in ambient air for all coatings investigated. Heat-treated NiP coating has a lower wear volume loss compared to composite NiP-SiC coatings for all sliding tests. The wear rate at the bi-directional sliding test was found to be lower relative to the wear rate at uni-directional sliding test
Magnesium for treatment of acute lacunar stroke syndromes: further analysis of the IMAGES trial
No full text<p><b>Background and Purpose:</b> A prespecified interaction analysis of the neutral Intravenous Magnesium Efficacy in Stroke (IMAGES) trial revealed significant benefit from magnesium (Mg) in patients with noncortical stroke. Post hoc analysis indicated that this effect was seen in lacunar clinical syndromes (LACS), interaction P=0.005. We have now examined whether this interaction could be explained by confounding baseline factors.</p>
<p><b>Methods:</b> LACS was defined on the basis of neurological signs and did not include imaging. We investigated the interaction between baseline variables and Mg treatment on global outcome. We used logistic-regression models to test whether the Mg-LACS interaction remained significant after adjusting for stratification variables, sex, a novel stroke severity score, and baseline variables that had an interaction with treatment (P<0.1).</p>
<p><b>Results:</b> The Mg (n=383) and placebo (n=382) groups of LACS patients were well matched on baseline factors. In addition to LACS, we found an interaction between beneficial Mg treatment effect and younger age (P=0.003), higher baseline diastolic blood pressure (P=0.02), higher mean blood pressure (P=0.02), and absence of ischemic heart disease (P=0.07). Even so, the adjusted Mg-LACS interaction remained significant (odds ratio [OR] 0.57; 95% CI, 0.39 to 0.83; P=0.003). In the LACS subgroup, Mg improved Barthel Index <95 (OR 0.73; 95% CI, 0.55 to 0.98), modified Rankin Scale >1 (OR 0.67; 95% CI, 0.50 to 0.91), and global outcome (OR 0.70; 95% CI, 0.53 to 0.92) but not Barthel Index <60 or mortality.</p>
<p><b>Conclusions:</b> The positive treatment effect of Mg in LACS cannot be ascribed to general issues of severity, time to treatment, blood pressure, or other baseline factors; equally, this finding may be due to chance. A large trial of Mg treatment in LACS appears justified.</p>
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