Physical Sciences and Engineering

Tin dioxide thin films are prepared by vacuum coating method using powders made by sol-gel method. The powder doped using different percentages of fluorine, and the electric and optic properties of thin films formed from these are studied. X-ray diffraction pattern studies confirm improvement of crystalline nature as the percentage of fluorine is increased from 0-10wt %. The crystalline size is increased from 6.64nm to 66 nm by adding 6 wt% of fluorine.

Vertical axis wind turbine  power  generation  equipment can  be  located  at  ground level,  which  makes  for  easy  maintenance.  Also, VAWT  are  Omni -directional,   meaning they  do  not  need  to  be  pointed  in  the  direction  of  the wind  to produce  power.

Qualitative In this paper the terms d-system, m-system, n-system, U-ternary semigroup are introduced.  It is proved that an ideal A of a ternary semigroup T is a prime ideal of T if and only if T\A is an m-system of T or empty.  It is proved that an ideal A of a ternary semigroup T is completely semiprime if and only if T\A is a d-system of T or empty.  It is proved that every m-system in a ternary semigroup T is an n-system.  Further it is proved that an ideal Q of a ternary semigroup T is a semiprime ideal if and only if T\Q is an n-system of T (or) empty.  It is proved that if N is an n-

We have developed a special computing code for calculation of nuclear shape changes and quadruple moments (Q) of Lanthanum Isotopes. It has been shown from these calculations that by increasing neutron number, deformation parameter also increase for heavier isotopes which means more deformation from spherical shape. By comparison with Nilsson level diagrams we can infer quadruple deformation parameter (β2) and calculate quadruple moments of these isotopes.

The rapid economic growth witnessed in the Kingdom of Saudi Arabia has brought about an increasing demand for fossil fuels, leading to the substantial release of major airborne pollutants. Acquiring a better knowledge of their distribution and behavior is a prerequisite to further development. In the Gulf region, particularly in Saudi Arabia, because of the increase in number of oil and gas refineries, the production of sulfur as a by-product has increased tremendously from 400 to 6000 tons/day.

Pharmaceutical antibiotics also known anti-bacteria, which inhibit the growth of bacteria and various infections. Doxycycline (DOC) is a member of the tetracycline antibiotics which is frequently used to treat many different bacterial infection such as Chronic Prostitutes, Pelvic inflammatory disease and etc. Also Doxycycline has been demonstrated to reduce the invitro. growth of human breast and Prostate cancer cell, but at the sometime they have a negative effect on the environment when its presence in the industrial waste water .

In this paper an attempt has been made to develop an appropriate storage and collection plan based on optimal routing model using Geologic Information System in one of the wards of the Singanallur, Coimbatore city, India. The ward map is digitized and geo- referenced. The collection bins are attributed and collection routes of the MSW are optimized for degradable and recyclable wastes separately. The optimized route covered by the collection vehicle during the collection of recyclable wastes is 82.5% lesser than the degradable wastes.

In the present study, the steady, laminar, nonlinear hydromagnetic forced convective flow of a viscous, incompressible, electrically conducting and radiating fluid over a nonlinearly stretching surface of variable temperature with nonlinear radiation effects in the presence of a variable transverse magnetic field has been investigated. Stretching of the surface is considered in a power-law distribution form. The boundary layer equations for nonlinear flow and heat transfer are reduced to ordinary nonlinear differential equations by employing similarity transformation.

Vitrified bioceramic tiles were subjected by the incorporation of synthesized biosilica from bioresidue of Rice straw ash. The partially and fully substitution of biosilica for quartz in porcelain formulation enhances the physico-mechanical parameters. The ultrasonic pulse velocity was correlated with the compressive strength. The result which confirms that the biosilica act as a filler in porcelain tiles thus improves the mechanical behaviour of bioceramic tiles than reference tile.

Toxic heavy metals are being discharged significantly into the aquatic ecosystems as a result of various industrial operations, causing serious concern, especially in the developing countries over the last few decades. Heavy metals are not biodegradable and hence, accumulate in the living beings, causing diseases and health disorders. It is imperative that these metal ions are removed from the aqueous medium before discharging into the environment.