Search

This research paper elucidates the significant role of Replacement problem in reliability optimization problems. Ambiguity and indeterminacy act as a plight in scheduling maintenance problems. When there is a need for replacement the devices of components work under the circumstances of the problem and the sustentation characteristics to reinstitute or restore the decrepit components of the systems. There is a vagueness associated with the elements performing intervals, erroneous, following assessment period create a new task in adjudicating optimal constituents' distribution where it assessing future task effectively. In this paper, the group replacement model is solved using a special single valued octagonal Neutrosophic number. The formula for the De-Neutrosophication of the Octagonal Neutrosophic number is deduced by using the area removal method. MATLAB code is used in De-Neutrosophication and also delineating this effective work. The MATLAB program is being used in the replacement problem to find the optimal year of replacement. A numerical illustration is used for validating the replacement model to determine its persuasiveness. This replacement problem using MATLAB has not been initiated by any researchers. Analytically, the time consumption for this method is less and very effective when compared with other methods. A comparative analysis has also been conducted using SVNN. [ABSTRACT FROM AUTHOR]

Using geospatial approaches, this study aims to delineate the non-carcinogenic risk zones based on the consumption of contaminated groundwater in the Vaniyambadi region of northern Tamil Nadu. The availability of water is key to the sustainability of societies and to the quality of life. When it comes to groundwater, quantity and quality are both crucial. More health concerns are associated with drinking polluted water. The use of pesticides, fertilizers, wastewater discharge, and industrial effluents can all contaminate water sources. Twenty groundwater samples were taken in order to comprehend and examine the physicochemical parameters as well as to determine the amount of nitrate in the groundwater and how it affects people's health. The piper trilinear diagram makes it clear that SO4 or Cl predominates in the samples, indicating that all of the samples come into the "strong acids exceed weak acids" category. It is mostly explained by the existence of industries and agricultural activities. To determine several thematic maps and determine the groundwater quality, the Inverse Distance Weighted (IDW) method, an interpolation method in ArcGIS, is employed. According to research on the general quality of groundwater, the water in the study region indicates that it should not be used directly for consumption and that no effective irrigation can be done with it unless salt-tolerant crops are grown. Hazard quotients (HQ) were used as a criterion for evaluating non-carcinogenic risks in both adults and children. The findings suggest that everyone is at danger from nitrate ingestion regardless of age oral consumption of groundwater high in nitrates About 82% of children, 73% of women, and 55% of men are at risk for health problems. For all groups, the health risks associated with nitrate absorption through skin are essentially nonexistent. [ABSTRACT FROM AUTHOR]

Toxoplasmosis is a disease that can infect pregnant women, foetus, women of childbearing age and it is also zoonotic. The sero-prevalence of toxoplasmosis with its associated risk factors in two hundred and seventy-seven gravidae attending University of Port Harcourt Teaching Hospital was investigated to ascertain the current status of toxoplasmosis in Rivers State. Blood samples were collected from the subjects through veno-puncture, and the blood tests performed using the rapid test kits for Toxoplasma gondii IgG and IgM antibodies following manufacturer's instructions. Commercial pregnancy test kits and HIV test kits were used to confirm their pregnancy and HIV status. Out of the 277 pregnant subjects examined, the overall prevalence was 5(1.8%) for T. gondii IgG antibody and 14(6.9%) positive for HIV. None of the HIV pregnant subjects were positive for toxoplasmosis. Chi-square analysis was used to assess the distribution of toxoplasmosis and other variables. The age groups 20 -29 years and 30-39 years had the highest sero-prevalence rates of 3(60%) and 2(40%) respectively for IgG while age group 40-49 years recorded no sero-prevalence. Exposure related sero-prevalence showed that eating of raw vegetables, undercooked meat, and exposure to contaminated soil through farming were more sensitive risk factors associated with toxoplasmosis than others. There was no statistically significant difference observed among those using cat as pets (P>0.05). A higher statistically significant difference was observed among the subjects that ate raw vegetables and drank untreated water (P<0.05) compared to those who ate cooked vegetables and drank treated water. The need for intensified health campaign to enlighten the society and pregnant mothers on the dangers of acquiring this neglected tropical disease-toxoplasmosis- and how to prevent it has been advocated. [ABSTRACT FROM AUTHOR]

Neutrosophic set (NS) is generalization of Intuitionistic Fuzzy Set (IFS) and Fuzzy Set (FS) where Neutrosophic Set(NS) is the collection of Membership, Non-Membership, Indeterminacy Membership of the constituent element. This paper includes the modified circle breaking techinque which is used to evaluate the Shortest Path Problem in which edge weight are protrayed in Single Valued Linear Heptagonal Neutrosophic Number (SVLHNN) and an numerical illustration is given for the efficiency of the given algorithm. [ABSTRACT FROM AUTHOR]

The study on the butterfly fauna of selected areas in the Sirumalai Hills, Dindigul district, Tamilnadu, showed 36 species of butterflies. The family Pieridae and Nymphalidae were represented more in numbers. The study showed a close relationship of the butterfly fauna with the flora of the Sirumalai Hills. [ABSTRACT FROM AUTHOR]

Immature CD4+CD8+ (double-positive (DP)) thymocytes are signaled via T cell antigen receptors (TCRs) to undergo positive selection and become responsive to intrathymic cytokines such as interleukin 7 (IL-7). We report here that cytokine signaling is required for positively selected thymocytes to express the transcription factor Runx3, specify CD8 lineage choice and differentiate into cytotoxic-lineage T cells. In DP thymocytes genetically engineered to be cytokine responsive, IL-7 signaling induced TCR-unsignaled DP thymocytes to express Runx3 and to differentiate into mature CD8+ T cells, completely circumventing positive selection. We conclude that TCR-mediated positive selection converts DP cells into cytokine-responsive thymocytes, but it is subsequent signaling by intrathymic cytokines that specifies CD8 lineage choice and promotes differentiation into cytotoxic-lineage T cells. [ABSTRACT FROM AUTHOR]

A literary criticism of the book "The Dark Holds No Terrors," by Shashi Deshpande is presented. Topics discussed include the significance of the role played by fate and chance to the life of the novel's heroine Sarita or Saru, the alienation between Saru from her mother after being charged with the killing of her brother Dhruva, and the result of her longingness of the love from her mother.