Ionospheric absorption at high latitudes that occurs coincidently with storm sudden commencements (SSC) is categorised as sudden commencement absorption (SCA). Having discounted any solar activity effects on the measurement of SCA this paper describes, for the first time, the basic characteristics of SCA measured over half a solar cycle. It is revealed that the measurement of SCA is not affecte...

A new N = 4 superconformal algebra (SCA) is presented. Its internal affine Lie algebra is based on the seven-dimensional Lie algebra su(2)⊕ g, where g should be identified with a fourdimensional non-reductive Lie algebra. Thus, it is the first known example of what we choose to call a non-reductive SCA. It contains a total of 16 generators and is obtained by a nontrivial Inönü-Wigner contractio...

OBJECTIVE To investigate the relevance of the clinical finding of bulging eyes (BE) in a large Brazilian cohort of spinocerebellar ataxias (SCA), to assess its importance in clinical differential diagnosis among SCA. METHODS Three hundred sixty-nine patients from 168 Brazilian families with SCA were assessed with neurological examination and molecular genetic testing. BE was characterized by ...

People inevitably face moments of uncertainty as they await feedback regarding self-relevant life outcomes, but they react to this uncertainty with varying amounts of anxiety. Self-construal abstractness (SCA) may be one key predictor of anxiety in the face of uncertain outcomes. SCA refers to a broad self-concept based on generalizations rather than a detailed, low-level self-concept that is b...

The existence of multipotent cardiac stromal cells expressing stem cell antigen (Sca)-1 has been reported, and their proangiogenic properties have been demonstrated in myocardial infarction models. In this study, we tested the hypothesis that stimulation of adenosine receptors on cardiac Sca-1(+) cells up-regulates their secretion of proangiogenic factors. We found that Sca-1 is expressed in su...

BACKGROUND Hematological changes can drive damage of endothelial cells, which potentially lead to an early endothelial dysfunction in patients with sickle cell anemia (SCA). An association may exist between endothelial dysfunction and several clinical manifestations of SCA. The present study aims to evaluate the links between changes in endothelial function and clinical and laboratory parameter...

HYPOTHESIS Combined measurement of intact parathyroid hormone (iPTH) and serum calcium (sCa) levels is useful for predicting postoperative hypocalcemia with minimal laboratory effort and low costs. DESIGN Prospective analysis of 170 consecutive patients. SETTING University hospital referral center. PATIENTS One hundred seventy patients underwent total thyroidectomy. Defining hypoparathyro...

STUDY DESIGN Retrospective study. PURPOSE To obtain information useful in establishing treatment guidelines by evaluating baseline clinical features and treatment outcomes of patients with spinal cord astrocytoma (SCA). OVERVIEW OF LITERATURE The optimal management of SCA remains controversial, and there are no standard guidelines. METHODS The study included 20 patients with low-grade and...

OBJECTIVES Our aim was to utilize a community-based approach to identify sex-related differences in risk factors for sudden cardiac arrest (SCA). BACKGROUND There are significant sex-based differences in prevalence and manifestation of SCA. Any differences related to predictors of SCA in women versus men are likely to have implications for risk stratification and prevention. METHODS The Ore...

the diallel cross design is frequently utilized to obtain information on genetic effects, estimates of general and specific combining ability (gca and sca) and to identify promising heterotic combinations as well as heterotic patterns. in the present study, heterotic crosses were identified for specific alkaloids in opium poppy (papaver somniferum l.) following yan’s gge biplot model by use of ...