Setup and characterization of a hollow core fiber waveguide for transient absorption experiments with short wavelength infrared pulses

An apparatus has been set up and aligned within the scope of this thesis that allows for ultrashort laser pulses with a central wavelength between 1300 and 1550 nm to propagate through a flexible hollow-core fiber. This work describes the setup and alignment process including the measurement of crucial laser parameters like focus and intensity as well as spectrum. Subsequently a full pulse characterization of the induced pulses was carried out using the TG-FROG method. For this purpose the pulses were measured before as well as after the fiber. The setup enables the possibility for spectral broadening of the transmitted pulses. For this purpose the fiber was filled with Helium gas at different pressures and the FROG retrievals were compared with the previous results. With this apparatus an extensive of control is gained over the pulses extending their scope of use in attosecond transient absorption spectroscopy for atomic and molecular dynamics investigations

Urgency of Legal Protection for Labor Rights within Waging Sector

National development is initiated in goal to achieve fully-fledged developments for Indonesians and the society as a whole through achieving prosperity, wealthy, equality either materially or spiritually in accordance to Pancasila and Undang-Undang Dasar 1945 ‘The 1945 Constitution of Republic of Indonesia’. For labors or workers, doing what they are assigned with are clearly intended to help sustaining their daily needs, as they will later receive remunerations based on their working contributions. Wage as mean of incomes is one of the rights embedded to the workers that need to be protected in line with the relevant regulations in force. Keywords: Legal Protection, Workers Right, Wages

Finite trifactorized groups and pi-decomposability

The first author would like to thank the Universitat de Valencia for its warm hospitality and financial support during the preparation of this paper.Kazarin, LS.; Martínez-Pastor, A.; Perez Ramos, MD. (2018). Finite trifactorized groups and pi-decomposability. Bulletin of the Australian Mathematical Society. 97(2):218-228. https://doi.org/10.1017/S0004972717001034S21822897

Inhibitors of SARS-CoV entry--identification using an internally-controlled dual envelope pseudovirion assay.

Severe acute respiratory syndrome-associated coronavirus (SARS-CoV) emerged as the causal agent of an endemic atypical pneumonia, infecting thousands of people worldwide. Although a number of promising potential vaccines and therapeutic agents for SARS-CoV have been described, no effective antiviral drug against SARS-CoV is currently available. The intricate, sequential nature of the viral entry process provides multiple valid targets for drug development. Here, we describe a rapid and safe cell-based high-throughput screening system, dual envelope pseudovirion (DEP) assay, for specifically screening inhibitors of viral entry. The assay system employs a novel dual envelope strategy, using lentiviral pseudovirions as targets whose entry is driven by the SARS-CoV Spike glycoprotein. A second, unrelated viral envelope is used as an internal control to reduce the number of false positives. As an example of the power of this assay a class of inhibitors is reported with the potential to inhibit SARS-CoV at two steps of the replication cycle, viral entry and particle assembly. This assay system can be easily adapted to screen entry inhibitors against other viruses with the careful selection of matching partner virus envelopes

Teaching to the Teachers: Secondary Education English Students in the Introductory Linguistics Course

Non-linguistic majors can benefit from well-designed lessons in the introductory linguistics course that raise issues students will need to know about in their future careers. At our institution, the introductory linguistics course is populated by students majoring in English Literary Studies, Secondary Education English, and Professional Writing. Secondary Education English (SEE) majors take Language and Linguistics because they must fulfill requirements mandated by the state: knowledge of morphology, phonology, syntax, history of the English language, and so on. In addition to these required subjects, we introduce other issues as well that we feel are essential to developing these particular students’ critical awareness of language issues that will affect them as they pursue their careers in education. Research has shown that most teacher education courses limit exposure to language and linguistic topics (Goodman, 2003; Baugh, 2005; Ann and Peng, 2005). So, for instance, while a course in secondary language arts pedagogy may teach students how to help their future students develop reading strategies for assigned texts, the course probably does not discuss how community or home dialects may impede understanding of such texts. Even career topics may be differently handled depending on whether they are part of a teacher education or a linguistics course: while an education course may inform students about the possibility of studying to teach ESL, or even earn a teaching certificate in ESL, a linguistics course might alternatively explore the issue of bilingual education, opening up the topic for students to learn about some of the national and state policies that influence whether bilingual education, and thus ESL instruction, is offered or not. Because SEE majors are less likely, then, to be introduced to contemporary language and linguistic topics in their education classes, we make a point of including such issues in the introductory linguistics course. The course curricula has included, for example, historical analyses of treatments of particular language groups – Hawaiian, Native American, for instance – , investigation into the motives and goals of the U.S. English movement, study of the contested issue of bilingual education and its use across the country, researching books that have been banned for language reasons, the study of regional and ethnic dialects, and other topics that future teachers must know about to be well-informed and successful instructors. Our presentation would include suggestions for ways in which content of the introductory course can be adjusted to specific populations of students to create the most effective and relevant learning experiences. To access PowerPoint slides for this presentation: Click the Download button on the upper right-hand side of the page