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this paper aims at studying a trigeneration system, based on an internal combustion engine and a steam ejector refrigeration system. the designed cycle is to generate cooling and heating energies, and supply power simultaneously. the cycle is studied from thermodynamics point of view and for this purpose, the first law of thermodynamics is applied to all components of the cycle. the efficiency ...

tick are considered as the main vector for transmission of various diseases to human being. this study was carried out to investigate the fauna of species belonging to two families of ticks, ixodidae and argasidae in west azerbaijan province, iran. a total number of 62 villages were selected randomly, from the study area 3278 ticks were collected with cluster sampling method, after collection t...

The increasingly global sourcing of information technology (IT) work is prompting fundamental changes in the availability of IT skills needed in both client and vendor organizations. In the summer of 2005 the Society for Information Management (SIM) sponsored of an international data collection effort by 20 researchers, is, who investigated how these factors affect the skills, capabilities and ...

In light of the significant role of teachers in pronunciation, we conducted a questionnaire survey in the summer of 2015 in an attempt to reveal the problem areas in English pronunciation faced by Japanese teachers of English. A total of 100 public junior high school teachers in Tokyo responded to the survey. The preliminary analysis revealed positive correlations between “emphasis on pronuncia...

The story of the Pact of unity between Chiara Lubich and Igino Giordani, which was the prelude to Chiara’s mystical experience in the summer of 1949, concludes with the introduction of something new arising from the Pact: the Soul. Chiara describes it as “the bond between us,” the “space” where the multiplication of the one and the unification of the many is both actualized and explained. This ...

Ambient nitrogen dioxide (NO2) concentrations are regularly measured at only two monitoring stations in the city centre of Ljubljana, and such scanty data are inadequate for drawing conclusions about spatial patterns of pollution within the city, or to decide on effective measures to further improve air quality. In order to determine the spatial distribution of NO2 concentrations in different t...

Light absorption coefficients of black carbon ( abs B ) were measured at several urban and industrial locations in Jordan during the summer of 2007 and the winter of 2008 using the photoacoustic instrument at a wavelength of 870 nm. Black carbon mass concentration (BC) was calculated using abs B . Black carbon levels at urban locations in the summer of 2007 were higher than those obtained at in...

Recently Diem questioned the western ridge movement of the North Atlantic subtropical high (NASH) reported in a 2011 paper of Li et al. This reply shows more analysis that further strengthens the conclusions originally put forth by Li et al. Diem’s analysis of the trend in the western ridge of theNASHwas based on the data over a 30-yr period (1978–2007), whereas the main conclusions in Li et al...

Institutional ethnography uncovers how institutional factors shape practice in sometimes unrecognized ways. This IE study on Brazilian school librarianship, conducted in the summer of 2013 in Florianópolis, SC, Brazil, uncovers similar challenges experienced by school library professionals the world over, as well as unique approaches informed by Brazilian culture.