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For all structural/functional application, tribological properties of material play most prominent role in day to day life. Tribology arises when there is relative motion between two surfaces in contact results loss of mass from surface by rubbing. To restrict this type of wear suitable lubricant can be use. This paper describes about wear behavior of three composites specimen made from constituting elements: alumina oxide, titanium dioxide and copper with the help of pin on disc machine. These three specimen pellets are made by powder metallurgy technique by increasing the furnace temperature from 1000C to 7000C with a rate of 30C/min. From wear test, wear rate graphs are plotted with respect to sliding velocity. In this study it is found that, composition of composites and sliding velocity majorly impart on wear rate. Our present aim is to test the mixture of various compositions of alumina and titanium in a copper base and test it for its different properties, to compare it with pure alumina. Among three composite it is observed that more the amount of TiO2 percentage, lesser is the wear rate. This investigation can help to improve the tribological properties of surfaces by varying their composition.

A two-dimensional laminar unsteady MHD free convective heat and mass transfer flow past a vertical porous plate immersed in a porous medium has been studied numerically in presence of chemical reaction, heat generation and variable suction. The governing partial differential equations are reduced to a system of self-similar equations using the similarity transformations. The resultant equations are then solved numerically using the Runge-Kutta method along with shooting technique. The effects of governing physical parameters on velocity, temperature and concentration as well as skin-friction coefficient, Nusselt number and Sherwood number are computed and presented in graphical and tabular forms. Comparisons with previously published work are performed and the results are found to be in excellent agreement.

Aneurysmal bone cyst (ABC) is a benign cystic lesion of bone composed of blood-filled spaces separated by connective tissue septa. it usually affects the metaphyseal in long bone (70-90%) and then vertebrae (15% of cases) Talus is an infrequent site of ABC and may be confused with other benign bone tumors because of its behavior less aggressive and his prognosis more favorable than the classical proximal lesions. The curettage with or without bone graft showed a high success rate to treat ABC of the talus cryosurgery for a recurrent lesion and talectomy as the last resort in some cases.

Central nervous system cavernomas are usually supra tentorial. Cerebellar localization is rare. Imaging, especially MRI can detect these malformations and look for other associated vascular malformations. If cavernous angioma is associated with a developmental venous anomaly, the venous anomaly should be spared due to the considerable risk of venous infarction following the abolition of cerebral venous drainage. We report the case of a 39 year-old man presenting with chronic headaches indicating brain MRI which showed cerebellar cavernoma associated to developmental venous anomaly.

Present study was focused on intake of duckweed by chicks and to evaluate the growth performance and carcass characteristics of chicks. A total number of 106 chicks were allocated to 3 treatments with 3 replicates. The treatments were categorized into group A (25% duckweed and 75% commercial feed), group B (50% duckweed and 50% commercial feed) and group C (100% commercial feed). Results showed that crude protein was higher in group B followed by group A while in group C crude protein was lower but total feed intake, average weight, live weight, meat and bone weight, skin weight, head weight, liver weight, intestine weight and shank weight were higher as compared to group A and group B and this was due to the fluffy nature of duckweed and small size of crop. It was concluded that sewage grown duckweed can be successfully utilized as poultry feed. Chicks can survive on duckweed and farmer can save money. This is the first study in Pakistan.

The goal objective of this study is to propose a new double ARA transform (DARAT). We employ this transform to prove the convolution, existence and other relevant theorems as well as derivatives properties. Subsequently, this transform is applied to solve some illustrative integral- differential equations. This approach was shown to be a powerful and efficient means to tack integral- differential equations.

With regard to the great attention paid to the narrative point of view in the second half of the 20th century, one of the most conspicuous features of childhood and youthful vision is to concretize the incidents and the events of the stories. It is evident that the innocent view of children, who are far from the personal prejudice which the adults cannot avoid, is very different from the adults’ viewpoint. This same discrepancy endows the writer with the possibility to characterize his/her personages more concretely. Moreover, the disparity between the world pictured by young characters and that of the adults may reveal many social and psychological anomalies more tangibly: those facts which do not fit into the carefree and unaffected world of children like human pains such as social injustice and inequality; evils like envy and maliciousness. But instead, children in their look at their surrounding are endowed with a camera-like precision and meticulousness, which adults have lost: the credit that families deny to their children, unaware of the fact that they are under the scrutiny of their children and often imitated by them. Thus, the writer sometimes equips himself/herself with this meek and innocent view, but lets the reader judge what happens around him/her with the same maturity and sophistication of an adult on-looker. Therefore, in this study the writers have presented ten Persian contemporary writers’ deliberate utilization of children’s and young adults’ viewpoint in their stories and the advantage of this technique in objective delineation of the major issue of children and families in their stories.

Visceral leishmaniasis is a vector-borne disease due essentially, at the level of the Mediterranean, to infection by leishmania infantum. Usually rare in adults, its prevalence has recently increased, including in immunocompetent person, with an annual number of new cases between 1.5 and 2 millions. The visceral form can be a diagnostic challenge because of the great variability of its clinical presentations. We describe the very atypical case of a rare form of visceral leishmaniasis (VL).

The dried leaves of Ocimum basilicum 100 g, produced 8.25% of concentrated volatile oil by hydro distillation method, the constituent of the oil were examined by GC-MS, it contained, Methyl eugenol (54.02%), Linalool (21.34%)?-cubebene (5.200%), Limonene (1.01%) nerol (0.875%), epsilon-muurolene(0.831% )?-pinene (0.76%) as the major compounds. The effect of volatile oil of Ocimum basilicum L, against six different pathogenic bacteria Staphylococcus aureus, Escherichia coli, Pseudomona aeruginosa, Salmonella typhimurium, Klebsiella pneumonia and Bacillus cereus, were carried out by using a disc diffusion technique, the highest antibacterial activity was detected against Pseudomonas aeruginosa (16.5 mm inhibition zone); and its lowest against Klebsiella pneumonia (11.95mm inhibition zone).The antibacterial activity of the synthetic antibiotics, (Ciprofloxacin, Tetracycline Ceftriaxone, Chloramphenicol and Gentamycin, were tested by the disc diffusion method, and by measuring zones of inhibition, shows that there were significant differences, among all antibiotic the highest activity of antibiotic against bacteria was due to the action of ciprofloxacin (22.12 mm inhibition zone) and the lowest activity was due to the action of Ceftriaxone (10.8mm inhibition zone), among the bacteria, the highest inhibition zone by antibiotic is Salmonella typhimurium(17.8 mm inhibition zone), the lowest inhibition zone by antibiotic is Klebsiella pneumonia (10.96mm inhibition zone), there was no significant different between antibiotic and the volatile oil of Ocimmum basilicum in this study.

We present a number of significant engineering insights on what makes a good configuration for medium- to large size wireless mesh networks when the objective function is to maximize the minimum throughput among all flows. For this, we first develop efficient and exact computational tools using column generation with greedy pricing that allow us to compute exact solutions for networks significantly larger than what has been possible so far. We also develop very fast approximations that compute nearly optimal solutions for even larger cases. Finally, we adapt our tools to the case of proportional fairness and show that the engineering insights are very similar.