The present essay aims to give both a contribution to rethinking sociology of intellectuals and to the study of transition from the hierarchical order of modernity (idea of Society) to a social pattern based on persons and subjects. In particular, we will try to paint a sketch of the transformationsof the intellectual function. Exerted by big bureaucratic machines, today the intellectual action partially detaches itselffrom the intellectual function carried out by big bureaucratic machines of the modern era. New typologies of intellectuals were born as well as a new,deeply ambivalentpublic space. The Internet and networked individualism are the main carriers of these transformations.

The Plant and Soil Sciences eLibrary (PASSEL) offers worldwide access to animations and content lessons. Application lessons were added to show how key concepts are used in occupations. Such lessons cannot be effective if students make superficial or no use of them. What assurance can we offer that their time and effort will pay off? University students in a first-year Plant Sciences course were asked to read a lesson on Transpiration Principles and an application called “Greening up the Greens,” then answer survey and assessment items. One asked, “Which strategy best describes your use of the application lesson?” Only 7% of the 149 students said they did not read the application, 24% scanned the lesson but did not answer the practice questions, 30% read the lesson and answered the questions but did not check all their answers, and 42% said they read it, answered the questions and checked their answers. On seven of the eight items, the 42% who said they used the most intensive strategy out-performed the class average. That 42% had even more advantage on more difficult items, providing evidence that engagement with the lessons is related to better understanding of a key concept as measured by assessment items.

A novel elicitor (PiPE) from the oomycete Phytophthora infestans (Pi) stimulates the hypersensitive response (HR) in potato. The PiPE, purified by anion-exchange chromatography from a water-soluble extract of Pi caused cell death, characteristic of HR, and enhanced active oxygen species (AOS) generation in tuber tissues. The partial amino acid sequence, and the sequence of the PiPE cDNA derived by PCR had homologous domain to fructose 1,6 bisphosphate aldolase (FBA) genes. To demonstrate that the PiPE cDNA encodes an active elicitor, we expressed PiPE in Echerichia coli, high five insect cells and purified the recombinant protein. His-PiPE induced HR, browning and generation of AOS in potato tissues. The PiPE was produced in the germination fluid from Pi and was existing in the cell wall of Pi. The role of PiPE peptides in the induction of HR in an incompatible interaction between Pi and potato cells is a prerequisite for the AOS and HR induction.

Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal ions from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial wastewater. The aim of the present study was to utilize the locally available agricultural waste materials for heavy metal removal from industrial wastewater. The wastewater containing hexavalent chromium was treated with biomass prepared from corn stalks. It was fund that a time of one hour was sufficient for sorption to attain equilibrium. The equilibrium sorption capacity after one hour was 0.375 mg.g-1. The optimum pH was (2-2.5) for chromium. Ion exchange was the major removal mechanism along with physical sorption and precipitation. The biosorption data was well fitted to Langmuir adsorption model. The kinetics of biosorption process was well described by the pseudo 2nd order kinetics model. It was concluded that adsorbent prepared from corn stalks can be utilized for the treatment of heavy metals in wastewater.

Background : People living in sub-Saharan African countries have been more vulnerable for HIV infection. Youths and adolescents including university students are among the risk group to acquire HIV infection due their risk behaviors. Many vulnerable young adults do not yet recognize their susceptibility, seriousness of the HIV infection, and are not motivated to alter their risky behavior. Therefore, this study is designed to assess HIV infection risk perception and abstinence and condom use among regular Madawalabu University students. Methodology : Institution based cross sectional study design was conducted among randomly selected 390 students in Madawalabu University, Southeast Ethiopia from May to June 2012. The data were analyzed using SPSS version 16.0. Descriptive statistics, binary and multivariable logistic regression analyses were employed to identify factors associated with perceived behavioral controls. Result : Forty two percent of the respondents were sexually active and 60.6% of them had used condom in their last sexual intercourse. Forty five percent (45.4%) of the respondents have low risk perception HIV towards infection. Perceived self-efficacy and abstinence for sexual intercourse were statistically significant (OR=0.38[CI (95.0%):0.24– 0.59]) and perceived benefits of HIV infection risk prevention and control method utilization showed significant association with perceived behavioral control among sexually active students (OR=0.46[CI (95.0%):0.27 – 0.83]). Conclusion : Nearly half of study participants have low risk perception to HIV infection. Perceived behavioral controls (abstinence for sexual intercourse and condom use) were statistically associated with perceived barriers and benefits of HIV infection risk prevention and control measures utilization. Perceived self-efficacy is the important predictor of perceived behavioral control utilization. Therefore, university based HIV risk reduction intervention should be geared towards the ide

For over 100 years a vital if little known movement has been underway to allow liberal arts undergraduates to meet their math requirement with more meaningful and relevant options than the traditional skills courses in algebra, geometry, trigonometry, and calculus. Often referred to as liberal arts mathematics, and with a subset called humanistic mathematics, such courses may explore mathematics as a realm of ideas that are essential to understanding the world we live in and what it means to be human. Although resistance to this movement has been vigorous and tenacious, it is now widely recognized that liberal arts undergraduates deserve access to such courses in order to meet their math requirement. The author describes a century-long argument in favor of meaningful mathematics courses for liberal arts undergraduates, traces the evolution of liberal arts math courses, justifies such courses in a discussion of what mathematics really is, and presents his own innovative pedagogy with a humanistic math course, Mathematical Explorations, which provides liberal arts undergraduates with the opportunity to alleviate math anxiety, improve reasoning ability, engage in experiential learning, and explore math-related ideas that are meaningful, relevant, useful, and inspiring.

This paper investigates the effect of a parabolic deflector on the flow rate of a sonic (resonance) pump. A specially shaped parabolic deflector is designed and manufactured to fit to a1.5” spring-loaded poppet valve and tested on a solar powered sonic pump at resonance frequency of 5.33 Hz. It was found that the flow rates increased by as much as 51% at 22 Watt and by 5.1% at 38 Watt as compared to the case without a deflector and no air in the pipe system. Whenever air is present in the pipes the deflector enhanced the flow rate by as much as 216% at 22 Watt and by 63% at 38 Watt forcing to remove quickly the air from the system. These results are dependent upon the position of the deflector with respect to the valve body, the power input to the oscillating system and the existence of air in the pipe system. It is concluded that the deflector is a simple and suitable means for increasing the pump flow rate.

Ship breaking is the process of dismantling an obsolete vessel’s structure for scrapping or disposal conducted at a beach, recycling the ship’s structure. It is a challenging process, due to the structural complexity of the ships and the involvement of many environmental, safety, and health issues. Six hundred end-of-life ships are broken annually without cleaning by the owner prior to export, and only a very few cleaned before scrapping. More than 3,000 ships with the toxic wastes have been exported over the last five years to Asian ship breaking yards and Bangladesh is the leading ship breaking country is south Asia. Although the steel is recycled, the toxic substances such as PCBs, metals, asbestos, lead, waste oil, TBT, etc enter into the environment and into the bodies of the workers. A new EU report on the phasing out and scrapping of single hull oil tankers concluded that 2,200 oil tankers would have to be scrapped after the end of their commercial life by the year 2012.Bangladesh is dependent on ship scrapping for fulfilling its domestic demands for steel and iron. Ship scrapping is not regulated by environmental law, nor is there care for the health and safety of the workers. Workers of Bangladesh break up European vessels with no protection from explosions, asbestos or a cocktail of toxic chemicals contained in the ship. Over the last 20 years more than 400 workers have been killed and about 6000 were seriously injured that indicates the highest accidents and casualties at the yards in the region. Workers cut down steel plates continuously without uniforms, protective gloves, boots and goggles. The Main objective of this paper is to Identifying hazards associated with ship breaking, to Calculate risk level according to those hazards and recommendation to ensure safety for the ship breaking workers.

Peer to Peer Network for mobile is not centralized but self managing network with no specific topology. Topology of the Peer to Peer Network for mobile is change with change in time. In Mobile Peer to peer network various group communication protocols exists for multiparty conferencing. A mobile Peer to Peer network consisted of many security risks such as Decentralization of data storage, unusable connections, unauthorized access of data storage, provide connection to temporary IP address, Possess significant or total autonomy from central servers. Both file sharing and instant messaging are unsecure due to unavailability of encryption in both ends sender as well as receiver site in different peer to peer mobile network protocols. In this research our goal is to compare different group communication protocols in peer to peer mobile networks. and to suggest an efficient and secure protocol for group communication over peer to peer mobile network.

The proposal for “unified terrain categories exposures and velocity profiles” by Choi in 2009 has been evaluated extensively. On the basis of 6 articles in open literature (3 papers during Typhoon Muifa in 2011, one during Hurricane Ike in 2008, one during Typhoon Sally in 1996, and one during an atmospheric dispersion experiment in New York City, USA) and nearly simultaneous upper-air measurements when available, it is found that the proposed criteria (except the displacement height) by Choi are evaluated to be useful operationally for engineering applications. An alternative approach using the mean building height (rather than the displacement height)as the input to estimate the power-law exponent and the gradient height is prosed for practical use.