Basic Mathematics for Biochemists. by Athel Cornish-Bowden

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Microwave and Millimeter-Wave Remote Sensing for Security Applications. By Jeffrey A. Nanzer, Artech House, 2012; 372 pages. Price £109.00, ISBN 978-1-60807-172-2

Microwave and millimeter-wave remote sensing techniques are fast becoming a necessity in many aspects of security as detection and classification of objects or intruders becomes more difficult. This groundbreaking resource offers you expert guidance in this burgeoning area. It provides you with a thorough treatment of the principles of microwave and millimeter-wave remote sensing for security applications, as well as practical coverage of the design of radiometer, radar, and imaging systems. You learn how to design active and passive sensors for intruder detection, concealed object detection, and human activity classification. This detailed book presents the fundamental concepts practitioners need to understand, including electromagnetic wave propagation in free space and in media, antenna theory, and the principles of receiver design. You find in-depth discussions on the interactions of electromagnetic waves with human tissues, the atmosphere and various building and clothing materials. This timely volume explores recently developed detection techniques, such as micro-Doppler radar signatures and correlation radiometry. The book is supported with over 200 illustrations and 1,135 equations

Publisher's Note - Pagination Error

Publisher's Note added on 29 September 2008: There is a pagination error in the Int. J. Mol. Sci. 2008, 9(5) with page 905 missing. Thus, page 905 is taken as a blank page

Publisher’s Note – Received Date Error, Int. J. Environ. Res. Public Health 2009, 6, 3105–3114

Publisher’s Note added on 29 December 2009: The received date of Int. J. Environ. Res. Public Health 2009, 6, 3105-3114 was wrongly published. [...

Retraction: Eldefrawy, M.H.; Khan, M.K.; Alghathbar, K.; Tolba, A.S.; Kim, K.J. Authenticated Key Agreement with Rekeying for Secured Body Sensor Networks. Sensors 2011, 11, 5835–5849.

It has been brought to our attention by a reader of Sensors that substantial portions of this article [1] have been copied from an earlier publication [2] without credit. After confirming this case with the authors, we have determined that indeed this manuscript clearly violates our policy on originality of all material submitted for publication and the generally accepted ethics of scientific publication. Consequently, the Editorial Team and Publisher have determined that it should be retracted. We apologize for any inconvenience this may cause

Changing Sci from Post-Publication Peer-Review to Single-Blind Peer-Review

Sci was launched in 2018 [...

Gibbs Paradox and the Concepts of Information, Symmetry, Similarity and Their Relationship

Information (I) is defined as the amount of the data after data compression. The first law of information theory: the total amount of data L (the sum of entropy S and information I) of an isolated system remains unchanged. The second law of information theory: Information I of an isolated system decreases to a minimum at equilibrium. The third law of information theory: For a solid structure of perfect symmetry (e.g., a perfect crystal), the information I is zero and the (information theory) entropy (called by me as static entropy for solid state) S is at the maximum. Gibbs Paradox has been resolved. Spontaneously mixed substances at gaseous state can be spontaneously separated at condensed phases (solid or liquid states), driving only by information loss or by the increase in (information theory) entropy. None of the typical pure mixing or separation processes are driving by free energy minimization and the free energy (or total amount of chemical potential) has no change during the processes of ideal mixture formation or ideal mixture separation. The thermodynamic entropy change for the formation of ideal mixtures of gases, liquids or solids is always zero.Comment: 5 pages, 1 figur