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We present a theoretical analysis of a recent experiment [J. Opt. Soc. Am. B 6, 1513 (1989)] on two-color threephotonionization of Xe through resonant even-parity Rydberg states. We calculate second-order ac-Stark shifts, two-photon Rabi frequencies, and ionization widths by using wave functions obtained from a multichannel quantum-defect-theory analysis of the Rydberg series in Xe. We perform a d

It has long been thought that respiratory infections are the direct result of acquisition of pathogenic viruses or bacteria, followed by their overgrowth, dissemination, and in some instances tissue invasion. In the last decades, it has become apparent that in contrast to this classical view, the majority of microorganisms associated with respiratory infections and inflammation are actually common

Class II antigens of the major histocompatibility complex (MHC) consist of two glycosylated, membrane-integrated polypeptide chains1. These cell surface-expressed molecules are involved in several immunobiological events involving cell-cell interactions2,3, most of which seem to require that genetically identical class II antigens, or other molecules controlled by the same region of the MHC, are e

The Galactic Center is one of the most dense stellar environments in the Galaxy and is considered to be a plausible place to harbor many neutron stars. In this brief review, we summarize observational efforts in search of neutron stars within a few degrees about the Galactic Center. Up to 10% of Galactic neutron stars may reside in this central region and it is possible that more than a thousand n

This paper discusses the importance of learning to understand the three-dimensionality of astronomical objects, in particular nebulae. After collecting data from students' and professors' discernment of 3D we finds that this is difficult for both students and professors, which highlights the importance of addressing extrapolating three-dimensionality in astronomy education.

In English Language Teaching in Sweden, the entextualized ideology is monolingual, i.e., English Only (Hult, 2017; Lundahl, 2012). Evidence from a large-scale classroom observation study (Swedish Schools Inspectorate, 2011) and a smaller-scale classroom-interaction study (Authors 3 & 4 2016) reveals a de facto bilingual policy of both English and Swedish enacted in classrooms, however. As stud

With the over-arching aim of contributing to the development of evidence-based teaching practices, this colloquium provides a forum for scholars doing research on language practices in the teaching of English as a foreign/second language (L2) in mainstream schools in Scandinavia. In Sweden, the English teaching profession has long been guided by monolingual, English Only, ideology, particularly at

A pressing issue in multilingual education is when to draw on students’ entire multilingual repertoires to enhance learning and promote equity (Cummins 2017; Kramsch 2009). Classroom research on the learning of L2 English supports multilingual/translanguaging practices (Lee & Macaro 2013; Zhang 2018), but much of this research involves students who had acquired the same L1 prior to having clas

Background: Infection could contribute to atherosclerosis. Several experimental animal studies have suggested possible cumulative adverse effects ofrepeated infections on arterial wall. Viral infections in the upper airways are more common in diabetic patients. Methods: Common carotid artery compliance (CAC) and stiftness index (SI) were assessed by external ultrasound in 70 children (mean age 14.

In this chapter, I examine the international law protecting the rights of indigenous peoples regarding the environment they inhabit during the aftermath of armed conflict (post-conflict) and how it sits with the larger framework of applicable law in post-conflict – the corpus of jus post bellum. I map out the legal landscape by looking at indigenous peoples’ rights in human rights law and internat

A self-tuning algorithm is proposed for the control of the air-fuel ratio in internal combustion engines. Such a controller can overcome problems connected with unknown bias of the engine dynamics, slowly varying engine parameters and excess oxygen sensor characteristics. The simulation study has focused on near-steady-state situations and shows the feasibility of self-tuners in comparison with co