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1994 (1)
1979 (2)
1Author    B. Rigitte, S. ChobertRequires cookie*
 Title    A Near-Infrared Spectroscopic Investigation of Water in Solutions with Proline, Glycinebetaine, Glycerol and Albumin  
 Abstract    The (v2 + v3) com bination band o f water has been investigated in aqueous solutions o f proline, glycinebetaine and glycerol and in a three component solution with each o f these substances and albumin. It is shown that the hydrogen bonding strength between the water protons and proline or betaine is higher than between water and glycerol. Betaine exhibits a higher affinity versus the oxygen o f water than does proline. The water binding capacity o f pure proline solutions is unchanged in a three-com ponent solu­ tion with albumin. Proline neither enhances nor reduces the solubility o f this highly soluble pro­ tein. In contrast, in a three-com ponent solution with betaine, the solubility o f both betaine and al­ bum in is reduced. It is assumed that these solute particles com pete for the sam e binding position on the water m olecule. Concentrated glycerol solutions with very low water concentrations dissolve a considerable am ount o f albumin, which points to the fact that the protein must be partly dis­ solved in glycerol itself. 
  Reference    Z. Naturforsch. 34c, 699—703 (1979); received February 2/M ay 29 1979 
  Published    1979 
  Keywords    Water, Protein, Proline, Betaine, Glycerol 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0699.pdf 
 Identifier    ZNC-1979-34c-0699 
 Volume    34 
2Author    D. Girlich, H.-D Lüdemann, C. Buttersack, K. BuchholzRequires cookie*
 Title    c , T-Dependence of the Self Diffusion in Concentrated Aqueous Sucrose Solutions  
 Abstract    The self diffusion coefficients D of the water molecules and of sucrose have been deter­ mined by the pulsed field gradient NMR technique over a wide range of temperatures and concentrations (cmax: 70% w/w sue.). All temperature dependencies can be fitted to a Vogel-Tammann-Fulcher equation. The isothermic concentration dependence of D for the sucrose is given by a simple exponential concentration dependence. 
  Reference    Z. Naturforsch. 49c, 258—264 (1994); received December 21993 
  Published    1994 
  Keywords    Diffusion, Sucrose, Water, Aqueous Solution 
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 TEI-XML for    default:Reihe_C/49/ZNC-1994-49c-0258.pdf 
 Identifier    ZNC-1994-49c-0258 
 Volume    49 
3Author    K. T. RindierRequires cookie*
 Title    Die Temperaturabhängigkeit biologischer Prozesse Temperature-Dependence of Biological Process  
 Abstract    Temperature dependence of biological processes is described by the modified Arrhenius equa­ tion, in which the constant is replaced by a temperature-variable coefficient. The theoretical foun­ dation for this replacement is given and experimentally verified. 1. Die Tem peraturabhängigkeit der Geschwindig­ keit chemischer Reaktionen wird durch die A rrhe­ niusgleichung beschrieben: v = v0 -e~ ElR T . 
  Reference    Z. Naturforsch. 34c, 474 (1979); eingegangen am 11. April 1978 
  Published    1979 
  Keywords    Arrhenius Equation, Phase-Change, Water, Mitochondria, Metabolizing Cell 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0474.pdf 
 Identifier    ZNC-1979-34c-0474 
 Volume    34