Giotto navigation support

Cooperative efforts between NASA and the European Space Agency (ESA) in supporting the flight of Giotto to Halley's Comet included prelaunch checks of ESA navigation software and delivery of validated DSN radio metric tracking data during the mission. Effects of drag from passing through the coma are seen in data received pre and post encounter. The post encounter Giotto trajectory provides a solar occultation in January 1988, prior to returning to the Earth in 1990 for possible retargeting to yet another comet

THE DOMINATION OF ZERO DIVISOR GRAPH ON THE LINE GRAPH

The directed Zero divisor graph is a graph constructed out of a non-Commutative ring R and its non-zero divisors. In this paper we find various domination parameter for the zero-divisor graph. For all commutative rings provides characterization with unity of total perfect codes. In this paper we study the characterization of eigenvaluesand adjacency matrix. We find the numerical example of non-zero divisor grap

TRAPEZOIDAL NEUTROSOPHIC FUZZY GRAPHS

The concept of this research is introduced to interval-valued trapezoidal neutrosophic fuzzy graph which is combined to trapezoidal fuzzy numbers and interval-valued neutrosophic fuzzy graph. In this analysis, proposed algorithm finds source node and destination node because of the shortest path problem . In this research, we apply trapezoidal number with interval-valued neutrosophic fuzzy graph and finding their score function. Eventually an illustrative example to explain, to easy way of shortest path fuzzy graph

KNOT THEORY-SOME BASIC CONCEPTS

A knot made out of a string are often deformed in space without cutting open the closed knot.The deformed knot is taken into account to be an equivalent because the original kno

Individual Theory of Tholkappiyam

There are many ancient language families in the world. Among them, the Dravidian language family is considered essential. The grammatical system and its trends have changed at various stages in the grammar composed in Tamil among the other languages. Grammar is about explaining those rules. The concept of individual theory develops by interpreting the structure of a language with structural order, using a specific grammatical theoretical concept for a given language over a period of time. Individualism does not operate in the context of any language, but it can construct the grammar of a language written over a period of time. The concepts of grammar are written under the categories such as, summation, type, extension, genealogy, etc., by using social, political, and academic problems to present individual theory. The interpretation of the structural order of language as a separate text without a linguistic background is consistent with the concept of individualism

Finite-amplitude vibration of orthotropic axisymmetric variable thickness annular plate

Call number: LD2668 .T4 1978 A94Master of Scienc

Energy Efficient Operation of Three Phase Induction Motor using Delstar Converter for Machine Tools

DELSTAR converter is an electronic system to be interfaced with the existing STAR – DELTA starter for machine tools. Induction motor consumes more power while it is operated at DELTA mode for a long time under no load condition. The proposed system gives the solution for the above stated problem. When the load on the motor is less than 40% of full load, it switches the motor to operate in STAR mode to save energy. When the load increases beyond 40%, it automatically switches the motor to operate in DELTA mode. The starting regimen is not disturbed. The proposed converter is recommended for applications where load changes are not more than 120 times/hour. This can be used with any capacity motor by choosing appropriate current transformers and setting the current level using the potentiometer built in. The proposed converter is designed for 5HP induction motor and experimentally tested

Political and socio-economic instability: does it have a role in the HIV/AIDS epidemic in sub-Saharan Africa?

(Case studies from selected countries)Many sub-Saharan African countries are confronted by the HIV/AIDS epidemic. This article reviews academic literature in the social sciences and health to discover why HIV/AIDS has become an epidemic in sub-Saharan Africa and not in other parts of the world. This was studied by examining the social determinants of diminishment of tradition and social cohesion in terms of political, social and economic problems. Four countries in this region were selected for this case study, namely South Africa, Botswana, Uganda and Zimbabwe. The findings showed that instability in socio-economic and political aspects in these nations was responsible for creating a suitable environment for the spread of HIV/AIDS infection.  This paper concludes by using the theories of collective action/responsibility and social cohesion to hypothesise that the breakdown of social ties due to various kinds of conflicts and unrest is one of the main contributors to the HIV/AIDS epidemic.Keywords: HIV, violence, social cohesion, connectivity, Prem-Achilles hypothesis, sub-Saharan Africa.De nombreux pays sub-sahariens africains sont confrontés á l’épidémie du VIH/SIDA. Cet article des revues de la littérature académique des sciences sociales et de la santé á pour but de découvrir pourquoi le VIH/SIDA est devenu une épidémie en Afrique sub-saharienne par rapport aux autres parties du monde. Ceci a été étudié en examinant les déterminants sociaux de la diminution de la tradition et la cohésion sociale en termes de problèmes politiques, sociaux et économiques. Pour ce cas d’études 4 pays dans cette région ont été sélectionnés, à savoir l’Afrique du Sud, le Botswana, l’Ouganda, et le Zimbabwe. Les résultats ont montré que l’instabilité politique et socio-économique est responsable de la création d’un environnement favorable á la propagation de l’infection du VIH/SIDA. Ce document conclus en utilisant la théorie de l’action collective/responsabilité et la cohésion sociale l’hypothèse que la rupture des liens sociaux en raison de divers types de conflits et de troubles reste l’un des principaux contributeurs á la pandémie du VIH/SIDA

Locally closed sets and g-locally closed sets in binary topological spaces

In this paper, we focused on locally closed sets in binary topological spaces and certain properties of these investigated. Also, we studied the binary generalized locally closed sets, binary g-lc*, binary g-lc** and established their various characteristic properties

Inhibition of Aspergillus VosA protein by lactic acid bacteria metabolites (in silico study)

In this work, we performed an in silico study using 3D structure protein of VosA, and analyzed the protein interaction via molecular docking using PyRx to test the inhibition efficacy of 15 metabolites compounds produced by lactic acid bacteria in conidia germination protein of Aspergillus. The antifungal docking findings revealed that these compounds showed good interactions and binding affinity against the target involved in conidia germination. The highest binding energy (-6.3 kcal/mol) was given by stearic acid. This interaction is due to the residue amines Ser and Phe. Palmitic acid also showed a good binding affinity with -6 kcal/mol. Lactic acid has not the same efficiency as palmitic, and stearic acid, which represented a value of -3.6 kcal/mol, the values recorded by cytidine was from -5 kcal/mol, which was also important compared to oxalic and acetic acid. DOI: http://dx.doi.org/10.5281/zenodo.560999