http://arthra.ugal.ro/handle/20.500.14043/25925 2026-04-17T00:36:06Z http://arthra.ugal.ro/handle/20.500.14043/25935 Design and Flow Modelling of Ballast Tank in-Line Ejector Dumitrache, Constantin; Comandar, Corneliu; Hnatiuc, Bogdan The purpose of this paper is to present the stages of designing a water in-line ejector used for ballast tanks stripping operation. The design operation was performed using NX Siemens CAD and ANSYS 15 for computer fluid dynamic analysis CFD. This ejector’ design was based on descriptive drawings of component parts, all dimensions being chosen from a worldwide supplier of high quality marine products. Computer Fluid Dynamic analysis is based on the finite element method (FEM), meshing, boundary condition and loads. Finally, we reached important conclusions regarding velocities, pressure and temperature of the fluid. The Annals of "Dunarea de Jos" University of Galati : Fascicle IX Metallurgy and Materials Science No. 1 - 2016, ISSN 1453 – 083X 2016-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/25934 The Influence of Speed Cooling on Some Properties of Laminated Steel Papadatu, Carmen Penelopi; Bordei, Marian This study presents a possibility to predict the connection between the cooling regime and the properties of steel. An important factor to enhance the properties of steel is the speed of the cooling regime. To be in accordance with the experimental results, this study considered a correlation between the speed of cooling for laminated steel with a low carbon content and other properties of steel. It is important to choose the optimal cooling regime because the steel was laminated at high temperature. The Annals of "Dunarea de Jos" University of Galati : Fascicle IX Metallurgy and Materials Science No. 1 - 2016, ISSN 1453 – 083X 2016-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/25933 The Eco-Efficiency of Recycling Organic Waste for Agriculture Purposes Banacu, Cristian; Olaru, Bianca Georgiana One of the problems of the cities is the raising of household waste, with polluting effects on the environment. On the other hand, in agriculture, through specific activities necessary to ensure food, fertilizers are needed, which could be used for the commands of sustainable development. Depending on environmental conditions, the negative impact can be indicated that they have on the human population by affecting plants, animals and, not least, people. Developed countries, such as the Netherlands, UK, Germany, France, Switzerland, have invested in technologies for the transformation of household organic waste into biofertilizers with low impact to the environment. The present article tries to analyze and underline the eco-efficiency of transforming organic waste into biofertilizers. The Annals of "Dunarea de Jos" University of Galati : Fascicle IX Metallurgy and Materials Science No. 1 - 2016, ISSN 1453 – 083X 2016-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/25932 Effect of Heavy Metals on the Germination of Wheat Seeds : Enzymatic Assay Pintilie, Olga; Zaharia, Marius; Cosma, Adelina; Butnaru, Alina; Murariu, Manuela; Drochioiu, Gabi; Sandu, Ion Stress caused by heavy metals is a major problem which affects agricultural productivity and, implicitly, human health. Natural flora presents differences of tolerance to heavy metals. Some plants grow well in a soil enriched with heavy metals, while others cannot develop in such conditions. This study investigates the effect of heavy metals on plant viability at molecular level and draws attention to the danger of the widespread use of toxic compounds. The Annals of "Dunarea de Jos" University of Galati : Fascicle IX Metallurgy and Materials Science No. 1 - 2016, ISSN 1453 – 083X 2016-01-01T00:00:00Z