Application Of Waste Low Heat As A Motive Source For Ejection Air-Conditiong Systems For Motor Yachts

Heat recovery is a common approach for effective energy management. With utilization of the waste heat the investment and operation costs can be reduced. In the paper the possibility of utilisation of the waste heat from flue gases in the maritime industry will be presented and discussed. Combustion engine is a main source for electric energy consumed be all electrical devices in ships and yachts. Currently, the classic compressor systems driven by electricity generated in generators are used for production of cold water used in AC units. Conversion of fuel energy into mechanical and electrical energy is related with creation of a significant amount of heat, which is irretrievably removed. The proposed solution is an excellent example of an industrial application with a strong potential for implementation. At the same time, it combines all positive aspects of environmentally-friendly cold production using clean technology and meets all standards in the use of ecological working fluid. The paper summarize the first phase of the project dealing with developing of the ejection air-conditioning system driven by waste heat. The potential application of the ejection refrigeration system operating for air-conditioning purposes and driven by waste heat has been analysed. A different solution of waste heat recovery node will be presented. Preliminary calculation of the proposed system operating with low-GWP working fluid will be presented and discussed. The geometry of the ejector designed for the specific case and performance operation line will also be shown. Design of the testing stand will presented

Files from: Physical nature of ethidium and proflavine interactions with nucleic acid bases in the intercalation plane

<p>Atomic coordinates for the four molecular systems studied in <a href="http://dx.doi.org/10.1021/jp056836b">Physical nature of ethidium and proflavine interactions with nucleic acid bases in the intercalation plane, <em>J. Phys. Chem. B</em>,<em> </em><strong>2006</strong>, 110 (19), pp 9720–9727</a>.</p

Visualization of the Differential Transition State Stabilization within the Active Site Environment

Abstract: Increasing interest in the enzymatic reaction mechanisms and in the nature of catalytic effects in enzymes causes the need of appropriate visualization methods. A new interactive method to investigate catalytic effects using differential transition state stabilization approach (DTSS) [1, 2] is presented. The catalytic properties of the active site of cytidine deaminase (E.C. 3.5.4.5) is visualized in the form of differential electrostatic properties. The visualization was implemented using scripting interface of VMD [3]. Cumulative Atomic Multipole Moments (CAMM) [4,5,6] were utilized for efficient yet accurate evaluation of the electrostatic properties. The implementation is efficient enough for interactive presentation of catalytic effects in the active site of the enzyme due to transition state or substrate movement. This system of visualization of DTTS approach can be potentially used to validate hypotheses regarding the catalytic mechanism or to study binding properties of transition state analogues