Theoretical Study of Physisorption of Nucleobases on Boron Nitride Nanotubes: A New Class of Hybrid Nano-Bio Materials

We investigate the adsorption of the nucleic acid bases, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U) on the outer wall of a high curvature semiconducting single-walled boron nitride nanotube (BNNT) by first principles density functional theory calculations. The calculated binding energy shows the order: G>A\approxC\approxT\approxU implying that the interaction strength of the (high-curvature) BNNT with the nucleobases, G being an exception, is nearly the same. A higher binding energy for the G-BNNT conjugate appears to result from a stronger hybridization of the molecular orbitals of G and BNNT, since the charge transfer involved in the physisorption process is insignificant. A smaller energy gap predicted for the G-BNNT conjugate relative to that of the pristine BNNT may be useful in application of this class of biofunctional materials to the design of the next generation sensing devices.Comment: 17 pages 6 figure

Delineate Subsurface and Groundwater Investigation of Ongur Watershed, South India

The electrical resistivity technique is extremely supportive to investigate the nature of subsurface lithology by understand the variations in their electrical properties. The Vertical Electrical Sounding (VES) technique by Schlumberger electrode array applied in 77 Locations at Ongur River Sub Basin in Tamil Nadu, India. The Signal stacking Resistivity Meter Model SSR-MP-ATS has been applied to gather the VES data by employed a Schlumberger array, one end current electrode (AB/2) ranging from 1 to 100 m, other side placing potential electrode (MN) from 0.5 to 10 m. The concept of the VES data interpreting is the foundation of IPI2Win. It means for a VES data are treated as a unity representing the geological structure of the Ongur River watershed. The output Geo-electrical layers, iso- resistivities and thickness of this area were prepared in spatial maps by using ARCGIS software. Consequently, the following zones with different resistivity values are detected consequent to different formations: (1) identification of lithology Ongur River Sub Basin, (2) layer saturated with fresh groundwater, (3) determine saltwater horizon

AVOIDANCE OF AIR BUBBLES WITH CHURNING EFFECT IN LUBRICANTS

Hydraulic systems are broadly utilized in today's technology because of their wide operating ranges and versatility in altering their operating process and ranges. There are a variety of contemporary equipments such as the Hydraulic press. The existence of bubbles in working fluids of hydraulic systems exhibits a massive affect on performance lately, a singular device able to effectively eliminating bubbles in hydraulic fluids using swirl flow continues to be developed. This product is known as the “Bubble Eliminator”. Within this project, an introduction to the physical concepts involved with bubble elimination inside the Bubble Eliminator during use is going to be provided. A short summary of typical hydraulic circuits in which the Bubble Eliminator continues to be effectively utilized in industrial applications is going to be provided. In gear and bearing lube, bubbles might be produced with a churning aftereffect of the fluid because it flows with the bearing set up. There are specific position-dependent centrifugal forces produced in most areas of the swirl flow, and also the bubbles have a tendency to move toward the central axis from the Eliminator because of the improvement in centrifugal pressure. Small bubbles are trapped making an aura column near central axis from the swirling flow close to the area in which the pressure may be the cheapest

Groundwater quality evaluation and its suitability for domestic and irrigation use in the hard rock terrain of Olakkur block, Tamilnadu, India

Ground water is the main source of water for agriculture and domestic use in the study area. This study was aimed to evaluate the groundwater quality for domestic and irrigational purposes. Groundwater samples were collected from twenty five locations in both pre-monsoon and post-monsoon months and examined for various physico-chemical parameters such as pH, total dissolved solids, total hardness, calcium, magnesium, sodium, potassium, bicarbonate, sulphate, Nitrate and chloride. To assess the domestic suitability of groundwater, all these parameters were compared with the standards of World Health Organization and Indian standards. Sodium Adsorption Ratio (SAR) and US salinity diagram were used to evaluate the groundwater for irrigation suitability. At some locations sodium and potassium values were higher than the prescribed limits. The SAR values were less than 10. Based on United States Salinity Laboratory Staff (USSL) diagram the dominant categories were C2-S1, C3-S1, C2-S1, C3-S1, C3-S2 in both pre and post-monsoon. Groundwater samples were classified as Na-HCO3 and Na-Cl water type in pre-monsoon and Ca-Na-HCO3 and Na-Cl types in post-monsoon. The geochemical analysis revealed that the groundwater samples were fit for domestic purpose. The irrigation quality assessment based on Sodium Adsorption ratio and US Salinity diagram suggested that, most of the groundwater samples were fit for irrigational activities except in certain locations where sodium and salinity values were high. Based on Piper water classification, mixing process and evaporation were the dominant geochemical process in the study area

An Additive Order And Privacy Preserving Function Family (AOPPF)

The plentiful benefits of cloud computing, for privacy concerns, individuals and enterprise users are disinclined to outsource their susceptible data, including emails, personal health records and government confidential files, to the cloud. This is as once sensitive data are outsourced to a inaccessible cloud, the analogous data owners lose direct control of these data. We identify a multi-owner model for privacy preserving keyword search over encrypted cloud data. We recommend an capable data user , which not only prevents attackers from eavesdropping secret keys and imaginary to be illegal data users performing searches, but also facilitate data user certification and revocation.

An Additive Order and Privacy Preserving Function Family (AOPPF)

The abundant advantages of cloud computing, for protection concerns, people and venture clients are reluctant to outsource their  susceptible data, including E- mail, individual health records and government private documents, to the cloud. This is as once touchy information are outsourced to a blocked off cloud, the practically equivalent to information proprietors lose coordinate control of these information. We recognize a multi-proprietor show for protection saving watchword look over encoded cloud information. We suggest a fit information client , which not just keeps aggressors from listening in mystery keys and nonexistent to be unlawful information clients performing seeks, additionally encourage information client confirmation and disavowal.

Free vibration analysis of a discretized aircraft with an integrated biodynamic pilot model – modal approach

This work deals with the formulation of mathematical model for a discretized aircraft with combined seated biodynamic pilot model. The developed model provides scope for exploring the dynamic characteristics of the aircraft system and pilot under various runway operations and landing impacts. Modal analysis approach is used to obtain the free vibration characteristics of multi degrees-of-freedom system. The obtained results like natural frequencies, mode shapes and undamped response curves are reported