Comparison of the Heats of Formation of Hydrocarbons

In order to facilitate the demonstration of the structure dependent stabilizing or destabilizing energy effects characterizing the individual hydrocarbons it is suggested to replace graphite. and hydrogen as reference substances (used in calculating the heats of formation) by the series of n-alkanes. This can be achieved by converting the heats of formation into relative enthalpies (HreJ). The proposed simple equation yields zero for the Hrel of n-alkanes and thus the extra stabilizing or destabilizing effects caused for example by branching or unsaturation, respectively, in other types of compounds are directly expressed by the numerical value of their Hrel

Comparison of the Heats of Formation of Hydrocarbons

In order to facilitate the demonstration of the structure dependent stabilizing or destabilizing energy effects characterizing the individual hydrocarbons it is suggested to replace graphite. and hydrogen as reference substances (used in calculating the heats of formation) by the series of n-alkanes. This can be achieved by converting the heats of formation into relative enthalpies (HreJ). The proposed simple equation yields zero for the Hrel of n-alkanes and thus the extra stabilizing or destabilizing effects caused for example by branching or unsaturation, respectively, in other types of compounds are directly expressed by the numerical value of their Hrel

Cultural value orientation analysis of a Hungarian educational institution: a case study

Stemming from personal interest, this exploratory case study (Creswell, 2007) aimed to explore everyday cases of dissatisfaction such as the alleged lack of respect towards teachers, and students’ unwillingness to study, or the differing expectations of students, teachers and parents in a state secondary school in Budapest, Hungary. The research was intended (1) to showcase situations where expectations were ‘off’, and (2) to highlight the possible sources of misunderstandings or problematic forms of behaviour. Thus, it set out to examine whether the complaints of teachers and students could be analyzed in terms of cultural value orientation theory (Hofstede, Hofstede & Minkov, 2010; Trompenaars & Hampden-Turner, 1998; Hall, 1976; Furka, 2013), and if so, which dimensions were detectable. Data collection involved the triangulation of data from questionnaires filled in by students (aged 14-18) and teachers in the same institution, as well as interviews with focus groups and individual teachers. Data analysis applied the constant comparative method of Grounded Theory (Glaser & Strauss, 1967; Creswell, 2007) for the interviews, and general statistical procedures for the questionnaires. Results show that differences in power distance and uncertainty avoidance in the stakeholders’ value systems might be responsible for the dissatisfaction. If they are not addressed explicitly, such value differences might lead to a decrease in performance output and job satisfaction, as well as a deteriorating school image

An Empirical Formula Expressing the Mutual Dependence of C-C Bond Distances

An empirical formula is suggested to describe the mutuaJ dependence of the length of the bonds formed by a central atom in systems built up from equivalent carbon atoms, e.g. diamond, graphite, the cumulene and polyyne chains and intermediate structures between them. A geometrical representation of the relationship is a regular tetrahedron. A point of this tetrahedron characterizes the arrangement of the atoms around the central one. From the position of the point the bond distances - and possibly the bond angles - can be deduced

English Needs Assessment Survey for International Students of Technology at the Budapest University of Technology and Economics in Hungary

Regular language instruction informed by needs assessment has been a widespread phenomenon in Teaching English as a Foreign language (EFL). In higher education (HE) institutions teaching English for Academic Purposes (EAP) based on research has also been a widely accepted trend. Nowadays the increasing number of international students in the Hungarian HE scenario has prompted faculties to support the development of students' language skills systematically. As one such institution, the Centre for Modern Languages (CML) at the Budapest University of Technology and Economics (BME) designed a questionnaire survey systematically to research the language needs of its international students of technology after having come across some anecdotal mismatches across faculties in the perception of the students' level of knowledge. International students of technology, their EFL teachers and their subject matter instructors were surveyed on how important they think certain language skills are for the students to succeed in the academic scenario. The results show that skills such as identifying main points in texts, summarising information in speech and in writing, or asking for clarification - all of pertain to the recognition or formation of structural elements in written and spoken texts - are seen as most important by the stakeholders. The results now inform the refreshment of course design and materials development at CML. Limitations are discussed together with future research recommendations, such as the need to thoroughly investigate non-linguistic issues influencing learning achievements, which may include cultural differences in learning strategies or learner-teacher expectations

Forty years of combinatorial technology.

Combinatorial technology has been facilitating the synthesis and screening of large molecular libraries containing millions of organic compounds ever since its introduction 40 years ago. It has changed the paradigms of pharmaceutical research from focusing on single compounds to focusing on immense collections of compounds. It inspired the development of dynamic combinatorial libraries, fragment-based drug discovery and virtual library screening. Combinatorial technology was revitalized by the development of DNA encoding. Amplification of DNA oligomers plus next-generation sequencing has made it possible to successfully screen billions of compounds in a single process

Changes of red blood cell aggregation parameters in a long-term follow-up of splenectomy, spleen-autotransplantation and partial or subtotal spleen resections in a canine model

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