Hepatic glutathione S-transferase activity in mosquitofish (Gambusia affinis) and topmouth gudgeon (Pseudorasobora parva) exposed to fenitrothion

Two common fish species, mosquitofish (Gambusia affinis) and topmouth gudgeon (Pseudorasobora para) were exposed to different concentrations of fenitrothion in static system for 96 h. Hepatic glutathione S-transferase activity was evaluated after 48 and 96 h pesticide exposure, and was also examined in fish pretreated with pepironyl butoxide and triphenyl phosphate and then exposed to fenitrothion. Results indicated presence of intense glutathione S-transferase activity in both species, mosquitofish exhibiting the higher activity. In both species the activity decreased as the concentration of fenitrothion increased, topmouth gudgeon being more susceptible than mosquitofish. In mosquitofish pretreated with pepironyl butoxide, glutathione S-transferase activity was increased (11.8%) compared with the control but in topmouth gudgeon it was decreased (21.6%) at the end of 96 h. Glutathione S-transferase activity was significantly reduced in both species pretreated with triphenyl phosphate at the end of 96 h exposure, topmouth gudgeon being highly susceptible. Ph. D. student, from Southern Ethiopia Health Bureau, Center for Health Research, P. O. Box 317, Awassa, F. R. Ethiopia.     

Depression,suicide, and the gifted student: A primer for the school psychologist

Growing up gifted often means growing up “different.” As schools struggle to provide appropriately designed interventions for student mental health issues, the role of the school psychologist is becoming increasingly important. In the present article, the role of the school psychologist is discussed, particularly as related to helping gifted students who may be manifesting symptoms of depression, suicidal ideation, and potentially suicidal behavior. Further, a holistic intervention approach is advocated and that accounts for four growth factors—intrapersonal, interpersonal, environmental/contextual, and developmental. Importantly, the specific strategies discussed are designed to help the school psychologist in their many capacities of helping gifted students thrive. Increasingly, however, it must also be recognized that the role of the school psychologist has expanded in recent years, and thus many of the intervention strategies offered may require a team of professionals to effectively implement. Regardless, the strategies discussed are designed to help gifted students thrive in the school setting.     

Bringing the outside in: Craftspeople share

Where do things REALLY come from? The basic beginnings of the food on the supermarket shelves, the clothes on our backs, the furniture we sit on are a mystery to many children. They can learn about these through books and stories, but firsthand observation is far better. But field trips can be complex undertakings, taxing the resources of time, money, and transportation. Fortunately, there are hobbyists and professional craftspeople who are willing to travel to you and share their knowledge with your children. Inviting them to visit your classroom can create a wonderful experience for all concerned.     

Preventive Conservation Applied to Wallpaintings in a Desert Environment in Mexico

ABSTRACT

The church of San Diego de Alcalá, located in Pitiquito, Sonora , in Mexico, lies on a missionary road founded by the Jesuit Eusebio F. Kino, which, with the expulsion of the Jesuit order in 1767, passed into the care of the Franciscans. It contains wallpaintings which presented deterioration problems whose cause was not easy to determine, since the damage appeared to be inconsistent with the techniques used and the environmental conditions. With an interdisciplinary team, a methodology was designed for a combined study of the environment of the church and its wallpaintings. Thermal imaging of the exterior and interior walls indicated that the building was made up of different materials, and the junctions between them explained the different deterioration pathologies between one zone and another. Hydrological maps for groundwater in the locality were studied, to elucidate the presence of water in a desert zone; abundant sources of water in the subsoil were identified, which, because of overexploitation of the land, have been diminishing over time. This allowed the elaboration of a plan for site management, through the identification of those deterioration factors that can be mitigated by simple maintenance actions that are inherent to the environment and the materials, which enabled a scheduled maintenance scheme to be implemented. This improved the condition of the building and its wallpaintings, while reducing the resource invested to achieve this goal.     

Sex Differences in the Perceived Appropriateness of Receiving Verbal Aggression

This study predicted that (a) male recipients evaluate aggressive messages as more appropriate than female recipients, and (b) the magnitude of this difference varies as a function of contextual parameters. A total of 249 college-aged students responded to hypothetical scenarios to evaluate the influence of sex of the message recipient, sex of the message source, relationship type, and privacy level of the communication setting on recipients’ evaluations of appropriateness of aggressive communication. Results indicated that male recipients evaluate aggressive messages as more appropriate than female recipients, and this main effect was moderated by sex of the message source, relationship type, and privacy level. The discussion highlights the subjective experience of aggression for male and female recipients.     

Text Mining 101: What You Should Know

ABSTRACT

Scholars increasingly use text and data mining (TDM) methods to discover trends and relationships within complex digital data sets. In order to support this development in scholarly communication, librarians and publishers need to be knowledgeable about TDM methods, build partnerships with TDM researchers, and address challenges related to licensing and access to large document sets. The presenters of this NASIG session shared their experiences of supporting TDM as a library subject liaison, acquisitions librarian, and publisher representatives. Audience members discussed issues involving TDM of data from multiple publishers, local hosting of data sets and TDM activity by undergraduate students.     

What should we do with our gut?

ABSTRACT

This article explores how breakthrough neuroscientific research regarding the Microbiome-Gut-Brain-Axis (MGBA) resonates with Catherine Malabou’s discussions of a delocalised, decentralised, plastic brain. Inspired by Malabou’s materialist methodology, as well as her confrontation of neuroscientific and psychoanalytic paradigms, the article unpacks the imbrication of symbolic and neuro-microbiological treatments of the gut and its excreta. Interlacing the thought of Julia Kristeva, Melanie Klein and Malabou alongside current MGBA research and critical studies of science and technology, I reveal how symbolic and microbial transmissions in early childhood development reflect a multimodal and multitemporal formation that challenges the established imaginary associated with functional gut and subject development. Secondly, I consider how MGBA research bears upon questions of difference, examining its further materialisation of Malabou’s otherness in a world without exteriority. Through this discussion I question the significance of this biological paradigm shift, as it disturbs notions of agency and the subject/environment distinction, opening to pressing ethical questions at this moment in human history. Through these varied interrogations and provocations, I provide a preliminary window into the potential of MGBA research to enable new departures for thinking the fragmentary movement of form and time underpinning Malabou’s motor schema of plasticity.     

Social stratification and life chances: An interactive learning strategy for criminal justice classes

Social class is an important issue that must be taken into consideration when examining crime and criminal behavior in the United States. Social class is often viewed as a critical factor that influences the motivation to commit criminal activities. This article describes an interactive exercise that helps students better understand how social class may influence deviant and/or criminal behavior as a response to wanting to maintain status quo (particularly those in middle to upper class levels), economic hardships (that may occur at various class levels), the lack of social power, income inequality, or the lack of resources.     

A Strategic University-Wide Initiative to Introduce Programs of Study Using Flexible Delivery Methods

In 1997, the University of Queensland (http://www.uq.edu.au) made a commitment to move to flexible modes of delivery of programs of study from a largely face-to-face model of delivery. This change was linked to the opening of a new campus, as well as recognition of a need for change in current teaching practice. This led to a university-wide response to reassess current practice in order to be able to develop, implement, and deliver services and programs of study more effectively and appropriately to the students. This paper reports the process of implementing a university-wide response for flexible delivery that includes discipline-specific faculty development, design, development, and production of flexible learning materials, and the development of administrative and student-support services to meet the different requirements of the students.