Comparative study of Anaplasma parasites in tick carrying buffaloes and cattle

INTRODUCTION The world population of buffaloes(Bubalus bubalis)has been estimated at over172million head,more than97%(167.6million)of which are in Asia and the Pacific region,mainly in India(97.7million)and Pakistan(25.5million)(FAO,2004).About98%of buffaloes in the region are raised by small farmers owning less than two hectares of land and less than five buffaloes(Mudgal,1992).In general,the water buffalo is regarded as more productive,healthier and more useful than the cow,especiall…     

A new solution to the gamer’s dilemma

Luck (2009) argues that gamers face a dilemma when it comes to performing certain virtual acts. Most gamers regularly commit acts of virtual murder, and take these acts to be morally permissible. They are permissible because unlike real murder, no one is harmed in performing them; their only victims are computer-controlled characters, and such characters are not moral patients. What Luck points out is that this justification equally applies to virtual pedophelia, but gamers intuitively think that such acts are not morally permissible. The result is a dilemma: either gamers must reject the intuition that virtual pedophelic acts are impermissible and so accept partaking in such acts, or they must reject the intuition that virtual murder acts are permissible, and so abstain from many (if not most) extant games. While the prevailing solution to this dilemma has been to try and find a morally relevant feature to distinguish the two cases, I argue that a different route should be pursued. It is neither the case that all acts of virtual murder are morally permissible, nor are all acts of virtual pedophelia impermissible. Our intuitions falter and produce this dilemma because they are not sensitive to the different contexts in which games present virtual acts.     

Biochemistry of Nitric Oxide

Nitric oxide (NO) a free radical having both cytoprotective as well as tumor promoting agent is formed from l-arginine by converting it to l-citrulline via nitric oxide synthase enzymes. The reaction product of nitric oxide with superoxide generates potent oxidizing agent, peroxynitrite which is the main mediator of tissue and cellular injury. Peroxynitrite is reactive towards many biomolecules which includes amino acids, nucleic acid bases; metal containing compounds, etc. NO metabolites may play a key role in mediating many of the genotoxic/carcinogenic effects as DNA damage, protein or lipid modification, etc. The basic reactions of nitric oxide can be divided as direct effect of the radical where it alone plays a role in either damaging or protecting the cell milieu and an indirect effect in which the byproducts of nitric oxide formed by convergence of two independent radical generating pathways play the role in biological reactions which mainly involve oxidative and nitrosative stress. Nitric oxide is also capable of directly interacting with mitochondria through inhibition of respiration or by permeability transition. Reaction of nitric oxide with metal ions include its direct interaction with the metals or with oxo complexes thereby reducing them to lower valent state. Excessive production of nitric oxide can be studied by inhibiting the synthetic pathway of nitric oxide using both selective or specific nitric oxide synthase inhibitor or non-selective nitric oxide synthase inhibitor with respect to isoforms of nitric oxide.     

Inactivation of infectious bursal disease virus by binary ethylenimine and formalin

In this experiment conducted to study the inactivation dynamics of infectious bursal disease virus （IBDV） by binary ethylenimine （BEI） in comparison with formalin, IBDV was isolated from the bursa of infected chickens and its confirmation was done by agar gel precipitation test. Viral suspensions were subjected to inactivation with BEI and formalin for pre-set time in- tervals. BEI was employed at concentrations of 0.001 and 0.002 mol/L while formalin was used at 0.1% and 0.2%. Sampling was done at 6, 12, 24, 36 and 48 h of incubation and samples were tested for their inactivation status in 9-day-old embryonated eggs and 3-week-old broiler chickens. IBDV was completely inactivated by 0.001 and 0.002 mol/L BEI after 36 h of incubation at 37℃, whereas formalin at 0. 1% and 0.2% concentrations inactivated IBDV in 24 h.     

Perspectives on academic staff involvement in the acquisition and implementation of educational technologies

This article presents the results of a study using both quantitative and qualitative data to uncover the extent and nature of the involvement of academic staff in the processes of acquisition and implementation of educational technologies. Actor-network theory (ANT) is used to inform the design of the study and the analysis of the data. Three main areas of investigation are (1) issues of institutional policy and overall purpose of technology, (2) issues of staff involvement in various activities related to acquisition and use of technology and (3) issues related to the existence of arenas for dialogue and discussions of technological needs and requirements across organisational boundaries. The analysis focuses on the diffuseness of the role of academic staff in processes of development of institutional policies and technology acquisition. The article concludes with suggestions for organisational policy in higher education contexts, and possible directions for new research.     

The role of academic management in implementing technology-enhanced learning in higher education

ABSTRACT

This article addresses how technology-enhanced learning (TEL) is implemented in higher education institutions. The study is based on data collected from a nationwide survey and semi-structured interviews with academic managers. The findings suggest that: (1) members of the academic management staff have limited knowledge of institutional strategies; (2) there is a gap between what academic managers believe they do to support and implement TEL and what other academic staff perceive them to actually do; and (3) TEL is seldom discussed during performance assessment reviews. In addition, the study reveals that academic managers have different understandings of the use of educational technology. Those differences appear to be closely related to the individual managers’ assessment of TEL’s role in supporting teaching.     

Surveying the context for the implementation of UPE in the Sudan

In 1977 the Government of the Sudan adopted a Plan with the long-term aim of universalizing primary education by the end of 1990. In spite of real accomplishments in education since the launching of the UPE scheme, there is a widespread conviction that the attainment of this objective will be delayed far beyond 1990 unless serious measures are taken to modify existing trends and imbalances. The following article, based on available information from the Sudan and on a microplanning study undertaken jointly by IIEP and the Sudanese Ministry of Education in 1981, is an attempt to draw some lessons from the Sudanese experience of UPE, highlighting the major difficulties encountered in implementing this policy and raising some of the implications of such a scheme for planning methods and perspectives. Although a host of financial and material problems (lack of resources, problems of communication, etc.) may be pointed out, one must not forget the pressure of existing trends and imbalances such as the ‘upward thrust’ in the development of the Sudanese school system, which contrasts with the top priority accorded in theory to primary education. The existing planning methods laid down by the central level and formed within a uniform and general setting, scarcely suit the variety of local situations in a country like the Sudan where the different regions are very diverse in their geographic, economic, ethnic and political composition.     

Children's Experiences of Bullying Victimization and the Influence on Their Subjective Well-Being: A Multinational Comparison

The study used data from the second wave of the Children's Worlds Survey to explore the relation between children's experiences of bullying victimization (physical and psychological) and their subjective well-being (SWB) across three age groups (8, 10, and 12) and 15 global geographical regions. The sample consists of 47,029 children randomly selected from 15 countries. Data were analyzed using structural equation modeling and multigroup confirmatory factor analysis. The results show appropriate fit structure for the overall model, and that the combined influence of physical and psychological bullying made a significant contribution to SWB across age groups and geographical regions. The findings are interpreted using Cummins's (1995) Homeostasis Theory of SWB.