MHD Boundary Layer Flow of Darcy-Forchheimer Mixed Convection in a Nanofluid Saturated Porous Media with Viscous Dissipation

The steady laminar viscous incompressible nanofluid flow of mixed convection and mass transfer about an isothermal vertical flat plate embedded in Darcy porous medium in the presence of magnetic field and viscous dissipation is analyzed. The governing partial differential equations are converted into ordinary differential equations by similarity transformations. The coupled nonlinear ordinary differential equations are linearized by Quasi-linearization technique. The linear ordinary differential equations are solved by using implicit finite difference scheme with the help of C-programming. Numerical calculations are carried out for different values of dimensionless parameter such as magnetic field, mixed convection parameter, inertia parameter, buoyancy ratio parameter, Eckert number, Prandtl number, Brownian motion parameter and Thermophoresis parameter. The temperature and concentration profiles increase with the increase of thermophoresis parameter. It is noticed that with the increase of Brownian motion parameter the temperature profile increases whereas concentration profile decreases. On the other hand, the Local Nusselt number and the local Sherwood number also presented and analyzed

Privacy Management of Multi User Environment in Online Social Networks (OSNs)

Online Social Networks (OSNs) are inherently designed to enable people to share personal and public information and make social connections with others. These OSNs provides digital social interactions and social as well as personal information sharing, but in sharing a number of security and privacy problems raised. While OSNs allow users to restrict access to shared data, they currently do not provide any mechanism to totally enforce privacy issue solver associated with multiple users. To this end, we propose an approach to enable the protection of shared data associated with multiple users in OSNs. We formulate an access control model to capture the essence of multiparty authorization requirements, along with a multiparty policy specification scheme and a policy enforcement mechanism. Besides we also implement a proof-of-concept prototype which is called as MController (multi controller) having contributor, stakeholder and disseminator controllers along with owner controller

Characterization of Rhizoctonia solani causing Fruit rot of Strawberry (Fragaria x ananassa Duch.) in Wayanad and in vitro Evaluation of Fungicides, Organic preparations and Bioagents for its Management

Strawberry, one of the most delicate, sweet and refreshing temperate fruit has grabbed the minds of several farmers and consumers all over the world. Several fungal diseases affect it. As part of the study, surveys were carried out in major strawberry growing parts of Kerala viz., Wayanad, Idukki, Malappuram and Thrissur. However, rotten fruits with dark and hard encrustations were collected only from Wayanad district during 2015-16. Pathogen was isolated by following the standard protocol and Koch’s postulates were proved. Upon culturing, the fungal isolate produced white mycelia turning brown on maturation with rapid growth. The hyphae were branched at right angles and did not produce spores. The pathogen was identified as Rhizoctonia solani based on cultural and morphological characters. In vitro evaluation was carried out with 9 fungicides and carbendazim 12% + mancozeb 63% , cymoxanil 8% + mancozeb 64% , propineb and Bordeaux mixture at all concentrations showed cent per cent inhibition. Copper hydroxide and difenoconazole inhibited the pathogen from 54.44 to 75 per cent and 58.88 to 70.55 per cent at 0.1, 0.15 and 0.2 and 0.05, 0.1 and 0.15, respectively. Copper oxychloride recorded less than 45 per cent inhibition, whereas carbendazim and potassium phosphonate were found to be least effective. Comparing the efficacy of organic preparations against Rhizoctonia, calphomil recorded highest inhibition of 55.33 to 63.88 per cent at different concentrations. Panchagavya and baking powder + vegetable oil mixture could inhibit the mycelial growth only by 23.33 to 25.50 per cent and 22.22 to 26 per cent, respectively. Whereas, neem oil was found to be least effective. Biocontrol agents were evaluated against the pathogen and Trichoderma asperellum could restrict growth of the pathogen by 66.67 per cent and Pseudomonas fluorescens by 33.33 per cent

Noise Pollution and Its Impact on Human Health and Social Behavior using Systems Approach-A Case Study in Kurnool City

The main objective of this paper is to evaluate the noise pollution problem in the Kurnool city of Andhra Pradesh, India and its effect on the public. Transportation and horn used in vehicle are the major source of noise pollution. Noise is one of the environmental problems that make daily life uncomfortable. It is an unidentified pollution that causes adverse effects on human life. Noise interferes in complex task performance, modifies social behavior and causes annoyance. Six different locations are chosen for study. Noise levels are monitored at different times in the day and night. Bronfenbrenner’s systems approach is used to illustrate the socio behavioral changes in human life due to noise. Keywords: Traffic noise – severe health issues - effect on social behavior - systems approach

On the Existence of Elementwise Invariant Vectors in Representations of Symmetric Groups

We determine when a permutation with cycle type $\mu$ admits a non-zero invariant vector in the irreducible representation $V_\lambda$ of the symmetric group. We find that a majority of pairs $(\lambda,\mu)$ have this property, with only a few simple exceptions.Comment: 16 pages, 11 figure

Evaluation of Anti Cancer Activity of Nigella Sativa Stem Extract by Inhibition of Cell Proliferation

INTRODUCTION: Cancer:Cancer is most lifethretening diseases which are characterized by uncontrolled cellular growth of abnormal cells anywhere in the body. Normally body forms new cells as it need cells to replace old cells which may die. Cancer make this go wrong. Cancer make new cells even when body doesn’t require it and the old won’t die.[1] Carcinogenesis or oncogenesis or tumouriogenesis is the formation of cancer whereby normal cells are transformed to cancer cells. The process is characterised by changes at cellular genetic and epigenetic levels and abnormal cell division sometimes forming malignant mass. The different phases of carcinogenesis is a multi-step process that includes initiation phase, promotion phase, conversion phase and finally progression phase. The growth of both normal and cancerous cells is genetically controlled by the balance or imbalance of oncogene, proto oncogene and tumor suppressor gene. Multiple genetic mutations are required to convert normal cells to cancerous cells. Apoptosis and cellular senescence (aging) are normal mechanisms for cell death. Cancer cells are genetically unstable, which results in tumor masses of heterogeneous cells and makes the cancer a “moving target” for drug therapy. AIM AND OBJECTIVES: The different types of cancer has most prevalence life threatening disease in the globe due to uncontrolled cell division and growth in affected area therefore badly affecting normal existence of life. Those who are affected with cancer can cure or reduce the symptoms with natural products.In india most of the peoples affected Colon cancer which included man 73% and woman 37%. Modern day chemotherapy treatment induced severe toxicities including weakening of body than before treatment of drugs. Plant based medicines play an essential role in primary health care system. As well as importance of plant derived medicines are seriously under estimated in modern medicine. In recent years much attention has been shown therapeutic impact of plant derived drugs and phytochemicals on various infectious and non infectious diseases of cancer. Compared to it’s alternative forms traditional medicines were practicing siddha, auyurveda and unnani but no scientific evaluation. The selection of this plant Nigella Sativa was made on the basis of literature survey to found the parameters such as: 1. High therapeutic value 2. Wide use in Indian Traditional System of Medicine 3. Degree of research work which is not yet performed So this work primarily aim to evaluate the anticancer activity of plant Nigella sativa stem extract on cell proliferation of colon carcinoma by using invitro and invivo. SUMMARY AND CONCLUSION: The current work revealed that the Nigella sativa stem shows anti-cancer activity comapred to normal. High light of this study is extraction with methanol and it’s phytochemical screening. Phytochemical study shows the presence of phenols, flavanoids, saponins ,and glycosides. Invivo study of Nigella Sativa stem extract was performed in DMH induced colon carcinogenesis. The results of present study showed that the supplementation of Nigella sativa to the diets of rats for 28 days did not change the haemetological parameters as well as histopathological examinations which illustrated normal architecture of liver and heart after treatment. It’s proved by no significant changes of serum ALT and AST level in treatment group compare to the control group. Absence of pathological condition of liver tissue in histological evaluation confirmed the result. This study also found that body weights of the rats in all groups are maintained during the experiment which indicating healthy status of animals. Invitro evaluation performed by MTT assay shows decreased cell viability with increasing concentrations of extract being cytotoxic. The identification of chemical compounds present in the stem of Nigella sativa stem which are responsible for the specific activity is remaining

Unilateral left rectus sternalis muscle: a case report

The rectus sternalis muscle is a small supernumerary muscle present in the anterior thoracic wall and is superficial to the sterno-costal fibers of pectoralis major muscle. In present study we came across left rectus sternalis, originated as a small tendon from the aponeurosis of the external oblique muscle, and the fascia of the rectus abdominis, and seen inserted into the clavicular fibres of pectoralis major of the opposite side of the manubriosternal joint. The rectus sternalis or sternalis muscle is of much importance in the field of radiology or surgery as its presence and knowledge might be effective and useful for the radiologists and surgeons during management of the pectoral region

Prevalence and risk factors for depression among antenatal women during third trimester of pregnancy in a tertiary care centre

Background: With the rising incidence of Maternal deaths due to suicide as evident from reports of Kerala state confidential review of maternal deaths, there is a felt need for screening for depression in study antenatal population. Though there have been various screening tools used, a simplified tool validated in study population was not used in study antenatal women till now. The objective of this study was to estimate the prevalence of depression among antenatal women admitted in the department of obstetrics and gynecology, Government Medical College, Thrissur and also to study the risk factors associated with depression in the study population.Methods: A questionnaire based cross sectional observational study was conducted among 100 antenatal women in their third trimester. PHQ-9 questionnaire was used to screen for depression and the information regarding risk factors was collected from the patient, her caregivers and from clinical records. Data analysis was done using EPI-INFO/SPSS software.Results: Prevalence of depression among hospitalized mothers: 53%. Most cases (70%) had: mild depression (PHQ Score: 5-9). Only very few (2%) of them had severe depression (PHQ score: more than 20). 9% had: moderately severe depression (PHQ score: 15-19). 19% had: moderate depression (PHQ score: 10-14). Statistically significant risk factors identified in this study were fetal gender preference, anxiety about labour process, anxiety about labour pain, anxiety about making the baby a part of their life and anxiety about baby’s health.Conclusions: The prevalence of depression among hospitalized mothers using PHQ-9 scale is high (53%). Screening for depression was found to be feasible and can be made a part of routine antenatal care so that appropriate interventions can be provided to improve maternal mental health and thereby prevent the maternal mortality occurring due to suicides

COMPARISON OF DIRECT TORQUE CONTROL, BAND CONSTRAINED AND PREDICTION TECHNIQUES OF A 3-Ø INDUCTION MOTOR

Direct torque control (DTC) is one of the most excellent control strategies of torque control in induction machine. It is considered as an alternative to the field oriented control (FOC) or vector control technique. These two control strategies are different on the operation principle but their objectives are the same. They aim to control effectively the torque and flux. Torque control of an induction machine based on DTC strategy has been developed and a comprehensive study is present in this project. In the paper, a novel technique for the direct torque control (DTC) of an induction motor is proposed, which overcomes the trouble of high torque ripple afflicting the conventional DTC technique. With the novel technique, the inverter voltage vector selected from the switching table is applied for the time interval needed by the torque to reach the upper (or the lower) limit of the band, where the time interval is calculated from a suitable modeling of the torque dynamic     By this approach, the control system emulates the operation of a torque hysteresis controller of analog type since the application time of the inverter voltage vector is dictated by the allowed torque excursion and not by the sampling period. In this project we are use three techniques