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Concerns about the use of ecosystem services as a tool for nature conservation: From misleading concepts to providing a “price” for nature, but not a “value”

Services as a Contested Concept: A Synthesis of Critique and Counter-Arguments. Conserv. Lett., 7, 514-523. Seppelt, R., Dormann, C.F., Eppink, F. V., Lautenbach, S. & Schmidt, S. (2011) A quantitative review of ecosystem service studies: Approaches, shortcomings and the road ahead. J. Appl. Ecol., 48, 630-636. Steg, L., De Groot & J.I.M. (2015) Should biodiversity be useful? Scope and limits of ecosystem services as an argument for biodiversity conservation. Environ. Values, 24, 165-182. Worthington, E.B. (1964) A definition of natural resources, in: United nations

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Sperm sexing technology - new directions in medicine

. Kalfoglou AL, Kammersell M, Philpott S, Dahl E. Ethical arguments for and against sperm sorting for non-267 medical sex selection: a review. Reprod Biomed Online 2013;26:231-9. DOI: 10.1016/j.rbmo.2012.11.007 66. Liao SM. The ethics of using genetic engineering for sex selection. Med Ethics 2005;31:116–118. DOI: 10.1136/jme.2003.005983

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Retrospection of the effect of hydroxyurea treatment in patients with sickle cell disease

as arginine, and molecular oxygen [ 27 ]. Further, this free-radical gas molecule is produced in vitro by the oxidation HU by heme groups [ 28 ]. Significant increase in NO-derived species after an oral dose of HU indicates NO release from HU in vivo [ 29 ]. These observations provide a strong argument for the participation of NO in the mechanism of HbF induction by HU [ 30 ]. Further, NO can promote the modification of cysteine 93 in the hemoglobin b-chain, by nitrosation [ 31 ] or transnitrosation reactions, to form glutathionyl hemoglobin [ 32 ], which inhibits

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