Effect of temperature variations in anaerobic fluidized membrane bioreactor : membrane fouling and microbial community dynamics assessment

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Biomass fuel use, burning technique and reasons for the denial of improved cooking stoves by Forest User Groups of Rema-Kalenga Wildlife Sanctuary, Bangladesh

This is an electronic version of an article published in International Journal of Sustainable Development & World Ecology, 1745-2627, 18(1) 2011, 88-97. International Journal of Sustainable Development & World Ecology is available online at: http://www.informaworld.com/smpp/content~db=all~content=a933218896~frm=titlelinkUse of biomass fuel in traditional cooking stoves (TCS) is a long-established practice that has incomplete combustion and generates substances with global warming potential (GWP). Improved cooking stoves (ICS) have been developed worldwide as an alternative household fuel burning device, as well as a climate change mitigation. A study was conducted among female Forest User Groups (FUGs) of Rema-Kalenga Wildlife Sanctuary, Bangladesh, to assess the status of ICS disseminated by the Forest Department (FD) under the Nishorgo (2009) Support Project, along with the community's biomass fuel consumption pattern. Wood consumption was highest (345kg month-1 household-1) followed by agricultural residues (60kg month-1 household-1), tree leaves (51kg month-1 household-1) and cow dung (25kg month-1 household-1). Neighbouring forests of the sanctuary was the core source for wood fuel, with little or no reduction in the extraction even after joining the FUG. Twenty-two species, both indigenous and introduced, were preferred as wood fuel. None of the respondents were found willing to use ICS although 43% owned one; either as a status symbol or to meet the conditions of the FD for membership in FUG. Seven negative features of the disseminated ICS were identified by households, which made them unwilling to use them further. Manufacturing faults may be responsible for some ICS demerits, while the FD failed to convince the community of the benefits. A proper examination of the disseminated ICS efficacy is crucial, with active involvement of community members. The Sustainable Energy Triangle Strategy (SETS) could be implemented for this purpose. Findings of the study are of immense importance in designing a strategy for the introduction of ICS into Bangladesh.ArticleINTERNATIONAL JOURNAL OF SUSTAINABLE DEVELOPMENT AND WORLD ECOLOGY. 18(1):88-97 (2011)journal articl

Preferential Occupancy of R2 Retroelements on the B Chromosomes of the Grasshopper Eyprepocnemis plorans

R2 non-LTR retrotransposons exclusively insert into the 28S rRNA genes of their host, and are expressed by co-transcription with the rDNA unit. The grasshopper Eyprepocnemis plorans contains transcribed rDNA clusters on most of its A chromosomes, as well as non-transcribed rDNA clusters on the parasitic B chromosomes found in many populations. Here the structure of the E. plorans R2 element, its abundance relative to the number of rDNA units and its retrotransposition activity were determined. Animals screened from five populations contained on average over 12,000 rDNA units on their A chromosomes, but surprisingly only about 100 R2 elements. Monitoring the patterns of R2 insertions in individuals from these populations revealed only low levels of retrotransposition. The low rates of R2 insertion observed in E. plorans differ from the high levels of R2 insertion previously observed in insect species that have many fewer rDNA units. It is proposed that high levels of R2 are strongly selected against in E. plorans, because the rDNA transcription machinery in this species is unable to differentiate between R2-inserted and uninserted units. The B chromosomes of E. plorans contain an additional 7,000 to 15,000 rDNA units, but in contrast to the A chromosomes, from 150 to over 1,500 R2 elements. The higher concentration of R2 in the inactive B chromosomes rDNA clusters suggests these chromosomes can act as a sink for R2 insertions thus further reducing the level of insertions on the A chromosomes. These studies suggest an interesting evolutionary relationship between the parasitic B chromosomes and R2 elements.This study was supported by grants from the Spanish Ministerio de Ciencia y Tecnología (CGL2009-11917) and Plan Andaluz de Investigacion (CVI-6649), and was partially performed by FEDER funds and a grant from the National Institutes of Health (GM42790)

Coverage Of Ethics In The Undergraduate AIS Course(s)

The potential for misuse of information due to proliferation of information technolo-gies and reduced control over information makes the inclusion of ethics in the AIS course extremely important. This study provides information about faculty perceptions on the importance of incorporating ethics in the AIS course(s). Results show that faculty rate internal control issues and financial reporting systems topics in the AIS course as most relevant topics for incorporating ethics. The results also show that respondents perceive the auditing course as most important in covering ethics with AIS ranked fourth after auditing, tax, and financial accounting. Additionally, about 34% of AIS faculty do not currently incorporate ethics in their AIS course. These results point to a need for increased awareness of the importance of incorporating ethics in the AIS course(s). Faculty limitations in covering ethics are also presented

So, you want to be an academic? The experiences of Black, Asian and Minority Ethnic Undergraduates in a UK Creative Arts University

This case study focuses on student conceptions of becoming an academic, and their perceptions of their institution’s role in supporting them, or creating barriers, on this journey. In-depth qualitative research was conducted with nine undergraduate Fine Art and Design students from a range of Black, Asian and Minority Ethnic (BAME) and White backgrounds, to understand the impact which tutor relationships; the curriculum; creative pedagogies; and the invisibility of diverse teaching staff might have on their journey through, and sense of belonging within, the academy. It is positioned amid the current BAME attainment gap in UK Higher Education (HE) and takes as its context, the discourse on the lack of BAME academics in UK universities: an issue more pronounced in the creative disciplines (ECU, 2017a:158). The aim of the study was to understand how institutional practices might support or hinder students returning to the academy as staff, using critical race theory, whiteness, and cultural capital frameworks to situate the research. The findings present an overwhelming interest among the students in teaching as a future career, and makes a case that students’ motivations and aspirations to teach, if fostered and supported, could partially remediate the current lack of BAME staff in HE

Physiological responses of red mangroves to the climate in the Florida Everglades

Physiological responses of red mangroves to the climate in the Florida Everglade