A High Order Solution of Three Dimensional TIME Dependent Nonlinear Convective-diffusive Problem Using Modified Variational Iteration Method

In this paper, we have achieved high order solution of a three dimensional nonlinear diffusive-convective problem using modified variational iteration method. The efficiency of this approach has been shown by solving two examples. All computational work has been performed in MATHEMATICA

A Wide Multiband T-Slotted, Semicircular Microstrip Patch Antenna for WLAN/WiMAX Applications

A multifrequency semicircularmicrostrip antenna is designed and simulated in this paper using HFSS simulation software. The proposed antenna consists of two quarter rings in different radius with one as perfect ground and other as defect ground structure, with an inverted T-shaped slot. The relationship of the resonant frequency with different physical size parameters for the single one-quarter-ring microstrip antenna is also reported. This designed multiresonant antenna proves increase in bandwidth when defect ground is used as compared to normal or conventional ground plane. The simulation show that proposed designed antenna operates at six different frequencies of 1.7, 1.93, 2.3, 3.03, 3.57 and 3.67 GHz, respectively for normal ground whereas wide bandwidth of 500 MHz is achieved for 1.9 GHz operating frequency

Secure Authentication Using Click Draw Based Graphical Password Scheme

Graphical passwords are an alternative to alphanumeric passwords in which users click on images to authenticate themselves rather than type alphanumeric strings. We have developed one such system, called Secure Authentication using Click Draw Based graphical password scheme, and evaluated it with human users. Secure Authentication using Click Draw Based graphical password scheme, including USAbility and security evaluations, and implementation considerations. An important USAbility goal for knowledge-based authentication systems is to support users in selecting passwords of higher security, in the sense of being from an expanded effective security pace. We use the sequence of multiple images along with a dummy image and alsoa pattern on any single image to influence user choice in click draw based graphical passwords, encouraging users to select more random, and hence more difficult to guess patterns

CR–39(DOP) kao detektor relativističkih iona 238U

CR-39(DOP) stack was exposed to 927 MeV/n 238 92 U beam from the Lawrence Berkeley Laboratory (LBL) accelerator BEVALAC at an angle of 30o to the detector surface. The chemically processed sheets were investigated using a Leitz Ortholux optical microscope. 644 etch pit cone lengths were measured and the track etch rate has been found to be (174 ± 11) µm/h. The present result is in accord with the data of Heyna et al. The estimated charge sensitivity has been found to follow the extrapolated results of Salamon et al. The present survey on the etch rate ratio has been found to increase faster than exponentially with Z/β and follows the relation VT /VG = exp[A + B(Z/β − 60) + C(Z/β − 60)2 ] where A = 1.623 ± 0.064, B = −0.0444± 0.0015 and C = 0.000506 ± 0.000064 for 27.6 ≤ Z/β ≤ 106.4.Slog CR–39(DOP) listova bio je izložen snopu iona 238 92 U energije 927 MeV/nukleon u akceleratoru BEVALAC, u Lawrence Berkeley laboratoriju, pod kutom od 30◦ prema površini tih detektorskih listova. Listovi su kemijski obradeni i ispitani pomoću optičkog mikroskopa Leitz Ortholux. Premjereno je 644 koničnih rupica nastalih prolaskom iona, i određena je brzina jetkanja oko tragova iona od (174±11) µm/h. Ovi su rezultati u skladu s rezultatima Heina i suradnika. Ocjenjena nabojna osjetljivost je u skladu s ekstrapoliranim rezultatima Salamonova i suradnika. Utvrđeno je da brzina jetkanja raste brže nego eksponencijalno o Z/β, i može se opisati relacijom VT /VG = exp(A + B(Z/β − 60) + C(Z/β − 60)2 ), gdje je A = 1.623 ± 0.064, B = −0.0444 ± 0.0015 i C = 0.000506 ± 0.000064, za 27.6 ≤ Z/β ≤ 106.4

Electromechanical effect in cholesteric liquid crystals with fixed boundary conditions

We describe a number of experiments to demonstrate the electromechanical effect in cholesteric liquid crystals. The Lehmann rotation phenomenon of drops with stress free boundary conditions is the most convincing effect produced by this coupling. In samples with fixed boundary conditions, the cross coupling produces a distortion of the profile of the azimuthal angles of the director. We have used a conoscopic technique to demonstrate this distortion in thick samples containing negative dielectric anisotropy materials. A strong linear electrooptic effect of electromechanical origin is produced in materials with a weak positive dielectric anisotropy. We provide an evidence that a twisted nematic cell without any chiral molecules also exhibits the electromechanical effect, due to the macroscopic chirality of the medium in such a cell

Impact of Environmental Degradation on Human Health

Degradation of environment is one of the most serious challenges before the mankind in today's world. Mankind has been facing a wide range of problem arising out of the degradation of environment. Not only the areas under human inhabitation, but the areas of the planet without human population have also been suffering from these problems. As the population increase day by day, the amenities are not improved simultaneously. With the advancement of science and technologies the needs of human beings has been changing rapidly. As a result different types of environmental problems have been rising. Environmental degradation is a wide- reaching problem and it is likely to influence the health of human population is great. It may be defined the deterioration of the environment through depletion of resources such as air, water, and soil. The destruction of ecosystem and extinction of wildlife. Environmental degradation has occurred due to the recent activities in the field of socio-economic, institute and technology. Poverty still remains a problem as the root of several environmental problems to create awareness among the people about the ill effect of environmental pollution. In the whole research it is clear that all factors of environmental degradation may be reduced through- Framing the new laws on environmental degradation, Environment friend policy, Controlling all the ways and means of noise, air, soil and water pollution, Through growing more and more trees and by adapting the proper sanitation policy.&nbsp

Glycosylated fibronectin positivity in the spectrum of hypertensive disorders of pregnancy in relation to the severity and adverse outcomes

Background: The aim of the study was to estimate the levels of glycosylated fibronectin (GlyFn) in preeclampsia (PE), and hypertensive disorders of pregnancy (HDP) and to correlate with the severity of the disease, adverse outcomes and complications. The study included 77 cases of HDP that were managed in the Institute of Obstetrics and Gynaecology, Modern Government Maternity Hospital (MGMH), Osmania Medical College, Hyderabad.Methods: This study was a prospective non-interventional analytical investigative study. To ascertain the performance of this biomarker, GlyFn, we evaluated the LumellaTM GlyFn POC test.Results: GlyFn positivity percentage was found to be highest in eclampsia (78.57%), next in PE with severe features 74.07%, in HELLP syndrome and gestational hypertension (HTN) (71.42%). In PE without severe features (66.66%) and in chronic HTN with PE superimposed (55.55%). Maternal complications include: abruption 5 (6.57%), thrombocytopenia 3 (3.94%), acute kidney injury (AKI) 3 (3.94%), post-partum hemorrhage (PPH) 3 (3.94%), and ascites 3 (3.94%). Perinatal outcome in 77 cases include: fetal growth restriction in 18 (23.37%) and total perinatal mortality was 14 (18.18%).Conclusions: GlyFn positivity was found to be highest in eclampsia and the severe forms of PE. The positivity declined in the less severe disease. The birth weight in the severe forms of PE group was significantly lower (p<0.0006). The differences in the birth weight among the GlyFn positive and normal groups was not significant for this population size (p=0.38).

SYNTHESIS AND ANTIOXIDANT ACTIVITY OF NOVEL 2-ARYL SUBSTITUTED BENZOTHIAZOLE DERIVATIVES

Objective: A series of 2-aryl substituted benzothiazole was designed and synthesized with various substituted benzoic acid. 2-mercaptobenzothiazole and thionyl chloride also used to get carbothiaote. The present study was carried to assess the pharmacological potential towards antioxidant activity of 2-aryl substituted benzothiazole derivatives. Methods: The antioxidant activity of the synthesized compounds was evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH), and superoxide radical scavenging assay methods. Results: Compounds showed significant radical scavenging potential due to the presence of electron donating substituent. Conclusion: These indicate that benzothiazole derivatives showed the defence mechanism to prevent formation of excess free radicals