The biosorption has been described as a surface process, where the binding sites of the biosorbent determine the efficiency of the contaminant removal. At the same time, the efficiency of these binding sites is highly dependent on the pH. Currently, there is a lack of generalization on how ...
While the properties of biochar are closely related to its functional groups, it is unclear under what conditions biochar develops its properties. In this study, two-dimensional (2D) (13)C nuclear magnetic resonance (NMR) correlation spectroscopy was for the first time applied to investigate th...
The Intrinsic PkA-Values of Functional Groups in Enzymes: Improper Deductions from the Ph-Dependence of Steady-State Parameter 1976. The intrinsic pKa-values of functional groups in enzymes: Improper deductions from the pH-dependence of steady-state parameters. CRC Crit. Rev. ... JR Knowles,WP ...
Ortho-olefination of a variety of N-nitroso compounds proceeds with excellent regioselectivity and high yields and tolerates various functional groups. B Liu,Y Fan,G Yang,... - 《Cheminform》 被引量: 102发表: 2013年 ChemInform Abstract: Manganese(II) N,N′〥ipyridoxylethylenediamine㎞,N′ヾi...
the pKavalues of chitosan are 6.22, 6.11, and 6.09, whereas PAA has a pKaof 6.529,40. Although these pKavalues may shift when the polyelectrolyte is incorporated within the coacervate41, it is safe to conclude that chitosan and PAA have moderate interactions between their functional groups at ...
Nitrous oxide (N2O) is a climate-active gas with emissions predicted to increase due to agricultural intensification. Microbial reduction of N2O to dinitrogen (N2) is the major consumption process but microbial N2O reduction under acidic conditions is co
The enhancement involves the conversion of chitin in butterfly wings to chitosan, which exposes more free –NH2 functional groups to form hydrogen bonds with –COOH in the AAc monomer. The characteristic peak of PNIPAAM in amide Ⅰ and amide Ⅱ overlaps with that of chitin and chitosan. The ...
A detailed study of the pH dependence of 1 J (C-α,H) has led to a determination of additive increments, ζ, for the functional groups NH 3 , NHCO , COO , and CONH which can be used, together with known values for NH 2 , COOH and alkyl substituents, to calculate 1 J (C-α...
Protonation of fourth-generation poly(amidoamine) dendrimers terminated with hydroxyl and amine functional groups has been studied by potentiometric pH tit... Y Niu,L Sun,RM Crooks - 《Macromolecules》 被引量: 224发表: 2003年 Standard pH values for standardization of potentiometric sensors in 10% ...
This review is focused on the functional interaction of GSLs with concurrent signaling. Our knowledge in this area is limited to GSLs of mammalian cells. Six series of GSLs with different core oligosaccharide structures, bound to ceramide, have been characterized,1 since the pioneering studies of...