Past Issue

Nuclear pollution: Forthcoming unsolvable global problem

After Second World War, the nuclear knowledge that was under military control had led to the production of atomic weapons was redeployed for peaceful purposes in many countries. Atomic energy counted several benefits and realized that this energy source was not risk-free. There was the danger of nuclear war, the spread of atomic weapons, and nuclear terrorism. But intensive international cooperation and a number of negotiated agreements suggested that these dangers could be avoided.

Modeling ionization effects in a BNCT field

The Ionization effects of charged particles produced in neutron interactions for Boron Neutron Capture Therapy (BNCT) are considered here using SRIM Monte Carlo Code. The estimated values of these effects in a Plexiglas acrylic phantom are shown to agree well with the available experimental values in high Boron concentration areas. As expected, the ionization effects from lithium and alpha particles are significant. In the low Boron areas, proton ionization makes an important contribution and its effect on healthy tissue should not be ignored.

Criminological study on thieves’ digit length (fars race) in Birjand Jail

Criminology is considered as a young, superior and effective knowledge in Iran which is not respected competently. Thus, necessary researches are not conducted and the only option for domestic criminologists has been restudying western researches. Criminological studies need a national will, thinking and holistic thought. Although we are confronting modern criminal thoughts, our combat against it is traditional. Anthropometry is a branch of biometry which only involves human.

An estimation of size-biased generalized logarithmic series distribution

This paper sets out to introduce a Size-biased Generalized Logarithmic Series Distribution (SBGLSD). An attempt is also made at obtaining the estimates of the parameters of SBGLSD by employing the method of moments and a proposed new method using the non-zero frequency of a variable up to a finite value. Comparison is also made among different estimation methods by means of Pearson’s Chi-square, Akaike Information Criterion (AIC) and Bayesian Information Criterion Techniques (BIC). It was observed that the proposed estimator gives better results in comparison to moment estimators.

Characterization of slow release of sulphur nutrient – a zeolite based nano-fertilizer

An attempt was made to synthesis a Nano-zeolite based slow release sulphur nutrients and to characterize them using high resolution instruments as a confirmation note of the effort. Zeolite is a natural super porous mineral (part of group of hydrated alumino silicates) carrying a negative charge balanced by freely moving cations with positive charges. This provides an ideal trap for positive cations which are then released that commensurate with crop nutrient requirement. Naturally occurring mesoporous material (zeolite) was reduced to a desirable nanosize (50-60nm).

Sorption characteristics of nano zeolite based slow release sulphur fertilizer

Understanding the sorption process in natural zeolites is necessary for effective utilization of these minerals as nutrient adsorbents and consequently as controlled releases of plant nutrients. This research was undertaken to characterize the ability of natural zeolites minerals to adsorb and release sulphur. The potential for sorption of these ions were evaluated by applying the Langmuir equations. Thus a percolation reactor experimental setup was used to study the sorption, desorption pattern of nutrients. The nano-zeolite has been fortified with a sulphur source (Gypsum).

Motivational factors of employee retention and engagement in organizations

Retention is the process of physically keeping employee members in an organization as it is one of the key fundamentals that are necessary for organizational success. In a globalized environment, retention and engagement of high prospective employees are a huge challenge to organizations especially in times of high turnover rates. In many cases, even engaged employees are sometimes dissatisfied with the outcomes of organizational performance which may lead them to look elsewhere.

Analyzing familiarity rate of faculty with social constructivism approach and its relation with students’ academic improvement in islamic azad university, urmia branch

This research is performed to analyze familiarity rate of faculty with social constructivism approach and its relation with students’ academic improvement. This research in terms of research type is related to basic- applied researches and in terms of method it is correlative. Statistical population contains all faculty members and students of Islamic Azad University in Urmia Branch in academic year 2012- 2013.

Antimicrobial investigation of different medications against nosocomial infections causing Staphylococcus aureus

Since it was first described in the 1990s, Methicillin-Resistant Staphylococcus aureus infection among people with no contact with a hospital setting or with no traditional risk factors has spread worldwide and is now an important epidemiological and public health problem. This study aims to emphasize the current importance of this emergent pathogen in our area. In the present study we have analyzed the impact of modified MRSA screening of carriers and patients on epidemiological situation of MRSA during 2010-2013 in Gwalior region of Central India. All S.

Effect of nanoparticles on the antibacterial activity of antibiotics

In this work, CdS nanoparticles were synthesized via chemical method and its activity on microorganism pathogens was investigated. X- ray Diffraction (XRD), Atomic Force Microscopy (AFM) and UV-VIS transmission spectroscopic analysis were utilized to characterize the crystalline structure, size, transmission spectra of nanoparticles. Diffraction analysis confirms the formation of cubiform and hexangular structures of nanoparticle, The AFM show the formation of combination of nanoparticle with particle size travel 7 – 20 (nm).