Journal of science 

About: Journal of science is an academic journal. The journal publishes majorly in the area(s): Population & Soil contamination. Over the lifetime, 125 publications have been published receiving 290 citations.

Are ants (Hymenoptera, Formicidae) capable of self recognition ?

Abstract: In front of a mirror, and consequently of their reflection view, ants behaved otherwise than when in front of nestmates seen through a glass. Seeing nestmates through a glass, ants behaved as usual, i.e. without taking close notice of them. In front of a mirror, they rapidly moved their head and antennae, to the right and the left, touched the mirror, went away from it and stopped, cleaning then sometimes their legs and antennae. As long as they could not see themselves in a mirror, ants with a blue dot painted on their clypeus did not try to remove it. Set in front of a mirror, ants with such a blue dot on their clypeus tried to clean themselves, while ants with a brown painted dot ‒ of the same color as that of their cuticle ‒ on their clypeus and ants with a blue dot on their occiput did not clean themselves. Very young ants did not present such behavior. Contrary to the other kinds of marking, a blue dot on the clypeus induced aggressiveness in nestmates. The front part of the head is thus an essential species specific character for leading to acceptance. Although further experiments are required, preferentially on ants and social hymenoptera with an excellent visual perception, our observations suggest that some ants can recognize themselves when confronted with their reflection view, this potential ability not necessary implicating some self awareness.

Bioremediation of High Molecular Weight Polycyclic Aromatic Hydrocarbons by Bacillus thuringiensis Strain NA2

Abstract: Polycyclic aromatic hydrocarbons (PAHs) are hydrophobic in nature; they are less soluble in water; so bacteria cannot access or degrade them easily. They are very much toxic to us. A new bacterial strain Bacillus thuringiensis strain NA2 has been isolated from a major petroleum oil contaminated site of India and found to degrade some more toxic members of PAHs like fluoranthene and pyrene. Optimization of this biodegradation has been done by changing different bio-stimulating factors like temperature, pH and addition of glucose as co substrate, Tween 80, H 2 O 2 or organic solvent. The results show an optimum condition at which the bioremediation is very significant. So the bacteria may be employed directly with the contaminated soil or sludge to see its effectiveness.

Measurement of vertical water percolation through different soil textures of paddy field during rice growth season

Abstract: The water percolation loss beyond root zone in the soil is one of the important parameters to determine water requirement of rice plant. If the amount of water percolation rate into the soil is estimated more carefully, determination of water requirement will be evaluated better and designing for system of irrigation, drainage and related establishments will be more easily done. The purpose of this research is determination the amount of irrigation water losses via vertical percolation in the paddy soils in rice growth duration. This study was carried out in a randomized complete block design (RCBD) with three replications in different areas of Guilan province in 1999. Seven areas which were different in the surface soil texture especially on their clay content or other particle size distribution were selected. For determining of water losses as vertical percolation was used quick method. The soils were sampled contemporary and the effects of some soil physical parameters on vertical percolation were studied too. The soil textures were consisted of: Sandy Loam, Loam, Clay Loam, Silty Loam, Clay and Silty Clay Loam. The results have shown that some physical parameters such as bulk density and particle size distribution especially clay content and sand fractions can be significantly effective on the amount of vertically percolated water. The values of adjusted determination coefficient of linear and nonlinear regressions (adj. R2) for above variables on vertical percolation for bulk density, clay, and sand percentage were 0.32, 0.91 and 0.79 respectively. The mean comparison of vertical percolation showed four different classes of vertical percolation at the 5% level by DMRT: Class I- Very high vertical percolation with 0.73 cm.day-1 or higher, in extremely light soil textures with clay contents less than 8%. Class II- High vertical percolation with 0.54 cm.day-1 in light soil textures with 8 -16% clay content. Class III- Medium vertical percolation with 0.32 cm.day-1 in medium soil textures with 16 - 44% clay content. Class IV- low vertical percolation with 0.15 cm.day-1 in heavy soil textures with more than 44% clay content.

Robust Textual Steganography

Abstract: Information hiding has been extensively functional on diverse fields during the enormous use of internet, with the support of two major branches, digital watermarking and Steganography. The security issues and confidentiality of the sensitive information has become the prime and necessary concern, as various events of global terrorism energized the requirement for better techniques for securing the machines and the data they store, transform and transmit. The proposed technique is based on text Steganography by using their technical properties, since storing of text file require less memory and its work faster, and makes communication preferable to other mediums of Steganography like image, audio and video for data hiding. The aim of this paper is to develop a model which can improves capacity, imperceptibility and robustness by use of multi layer text into text stenography with the combination of encryption, compression and embedding approach for obscurity of data.