Influence of Organic Structure Directing Agent Isomer Distribution on the Synthesis of SSZ-39

The aluminosilicate molecular sieve with the AEI framework topology (SSZ-39) is currently of great interest for use in a number of important applications such as exhaust gas NO_x reduction and the methanol-to-olefins reaction. It is likely that advances in the synthesis of this molecular sieve will be needed for applications to proceed. Here, dimethylpiperidine based organic structure directing agents (OSDAs) are used to prepare SSZ-39, and the influence of diastereo- and structural isomeric mixtures on the synthesis of SSZ-39 is reported. Although differences in the rates of molecular sieve formation as well as preferential isomer incorporation occur, the synthesis of SSZ-39 is possible over a wide range of isomeric mixtures. These findings demonstrate that the synthesis of SSZ-39 can be accomplished with OSDA isomer mixtures that naturally occur from the synthesis of the organic precursors used to prepare the OSDAs

Art therapy, arts-based research and transitional stories of domestic violence and abuse

Visual imagery within qualitative research is an established method of gathering data that has parallels to the way in which images are used within art therapy. This paper explores how visual imagery was used to investigate women’s responses to domestic violence and abuse and examines how art therapy principles shaped the development and conducting of that research. Through the use of collage, participants created visual representations of their responses to experiences of domestic violence and abuse. The visual representations were, when combined with spoken words, created stories that reference the past, present and future. The stories created have been termed transitional stories of domestic violence. These stories show that the home has special significance for women as they transition away from domestic violence and plan for their future. The home becomes both a metaphorical and physical manifestation and container of hopes for a harmonious future that often incorporates the desire for the return to the idea of a complete family. This paper will present the findings of the arts-based research conducted, and consider the implications upon art therapy practice of those findings.N

Teaching Science in Rural Elementary Schools: Affordances and Constraints in the age of NGSS

Providing science instruction is an ongoing priority and challenge in elementary grades, especially in high-need rural schools. Nonetheless, few studies have investigated the factors that facilitate or limit teachers’ science instruction in these settings, particularly since the introduction of the Next Generation Science Standards. In this study we investigated affordances and constraints to elementary science instruction in high-need rural schools. Data sources included semi-structured interviews and survey responses from 49 teachers from 30 different rural schools. Through a primarily qualitative analysis, we identified four teacher reported categories of affordances and four categories of constraints to teaching science. One category of affordances, access to a variety of outdoor science resources, and one category of constraints, high levels of isolation, were closely tied to the nature of rural schools. The other affordances and constraints are broadly recognized factors influencing science instruction. Implications for supporting rural teachers’ science instruction are discussed

Synthesis and metal coordination properties of some cyclic polyethers and polythioethers

Thermodynamic values for cation-cyclic polyether interactions for several systems are reported and discussed in light of ligand geometry, cation selectivity, solvent effects, structure, stoichiometry and the nature of the coordinate bond. Cyclic polyethers are shown to be remarkably good ligands even in water and to have marked selectivity for d0, d10 and d10 s2 cations. Syntheses of one new cyclic polyether and several new mixed cyclic polyether-thioethers are reported. Cyclic chelates with smaller rings are shown to prefer smaller cations, but this selectivity is masked by the hydration energy of the cation. Except for thiophillic cations such as Hg2+ and Ag+, substituting sulfur for oxygen in the ligands reduces their complexing power. A large number of crystalline complexes of several cyclic polyethers were isolated containing over twenty different metallic cations. Most had stoichiometries of 1:1 (ligand:metal), but one had 1:2 and several had 2:1 stoichiometries. A unique oxonium complex was also prepared and characterized. A new technique for the separation of crown-31 isomers is outlined

Discover the Music

I was excited to work on my project and create my choreography. I studied out the music and broke it down into counts. I found the different accents of each phrase. I made choices as to where I would follow the music and where I would go against the music. I had to be careful and watch how the music and movement were relating. It would have been easy to choreograph movement that paralleled the music. It would have been comfortable to use movement that I already knew and had used and performed before. I was challenged and had to work hard for every count and for every movement I created. Working with contemporary ballet gave me the opportunity to create my own movement that fit to my music and ideas. I was able to give depth to the music with my own movement

Should I stay or should I go? Stress, coping, and retention among novice teachers

There are many factors that lead to stress and burnout of teachers that ultimately result in up to half of teachers leaving the profession before their sixth year of experience. This study is a mixed-method approach to the problem that began with surveying n=385 secondary teachers of all content areas. The Maslach Burnout Inventory (MBI) was used to measure the teachers’ burnout levels, the Classroom Appraisal of Resources and Demands (CARD) was used to measure stress, and the Preventive Resources Inventory (PRI) was used to determine the teachers’ preventive coping skills. An independent t-test was conducted that found the stress and burnout levels between new and experienced teachers are not statistically different. Additionally, multiple regression tests were conducted with various combinations of independent and dependent variables. It was found that stress and burnout were significant predictors of job satisfaction. It was also revealed that years of experience, job satisfaction, and burnout are significant predictors of stress, while job satisfaction, preventive coping skills, and stress were significant predictors of burnout. This project aims to further research mathematics teachers as they are teachers in one of the most critical needs area of education. After the collection and analysis of the surveys, four mathematics teachers were chosen for follow-up interviews where they were questioned about their stressful occasions, coping mechanisms, and their ideas on mathematics teacher retention. The teachers were chosen randomly from groups that were stratified based on their preventive coping skills and stress levels

Differentiation of Bacillus pumilus and Bacillus safensis using MALDI-TOF-MS

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) despite being increasingly used as a method for microbial identification, still present limitations in which concerns the differentiation of closely related species. Bacillus pumillus and Bacillus safensis, are species of biotechnological and pharmaceutical significance, difficult to differentiate by conventional methodologies. In this study, using a well-characterized collection of B. pumillus and B. safensis isolates, we demonstrated the suitability of MALDI-TOF-MS combined with chemometrics to accurately and rapidly identify them. Moreover, characteristic species-specific ion masses were tentatively assigned, using UniProtKB/Swiss-Prot and UniProtKB/TrEMBL databases and primary literature. Delineation of B. pumilus (ions at m/z 5271 and 6122) and B. safensis (ions at m/z 5288, 5568 and 6413) species were supported by a congruent characteristic protein pattern. Moreover, using a chemometric approach, the score plot created by partial least square discriminant analysis (PLSDA) of mass spectra demonstrated the presence of two individualized clusters, each one enclosing isolates belonging to a species-specific spectral group. The generated pool of species-specific proteins comprised mostly ribosomal and SASPs proteins. Therefore, in B. pumilus the specific ion at m/z 5271 was associated with a small acid-soluble spore protein (SASP O) or with 50S protein L35, whereas in B. safensis specific ions at m/z 5288 and 5568 were associated with SASP J and P, respectively, and an ion at m/z 6413 with 50S protein L32. Thus, the resulting unique protein profile combined with chemometric analysis, proved to be valuable tools for B. pumilus and B. safensis discrimination, allowing their reliable, reproducible and rapid identification.Dr. Kasthuri Venkateswaran, Dr. Irene Ouoba, Dr. Joseph W. Kloepper, Dr. Cecilie From and Dr. Maria Morea are gratefully acknowledged for providing isolates FO-36bT, SAFN-027, SAFN-037, KL-052, 51-3C and 82-2C; Bs31; SE 49 (AP3) and SE 52 (AP7); FEL 55, UNG22 and MIL46, respectively. Raquel Branquinho was supported by a PhD fellowship (Ref. SFRH/BD/61410/2009) and Clara Sousa by a post-doctoral fellowship (Ref. SFRH/BPD/70548/2010), from FCT (Fundacao para a Ciencia e Tecnologia, Portugal). Hugo Osorio acknowledges the funding from QREN-FEDER through the Operational Program ON. 2 - O Novo Norte. IPATIMUP is an Associate Laboratory of the Portuguese Ministry of Science, Technology and Higher Education and is partially supported by the Portuguese Foundation for Science and Technology. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Competin

Absence of erythrocyte sequestration in a case of babesiosis in a splenectomized human patient

BACKGROUND: The importance of vascular occlusion in the pathogenesis of human haemoprotozoal disease is unresolved. METHODS: Giemsa-stained tissue sections from a human case of Babesia microti infection in a splenectomized patient with chronic lymphocytic leukaemia and colon cancer were examined to ascertain the distribution of parasitized erythrocytes within the vascular lumen. RESULTS: No evidence of sequestration was observed. CONCLUSION: This first report on the vascular location of B. microti in human tissue suggests that severe multi-organ failure due to babesiosis is independent of sequestration of parasitized erythrocytes. A similar pathogenesis may also cause multi-organ failure in other intraerythrocytic protozoal infections, including falciparum malaria