Given a group G, RF-theory constructs a new group RF(G) and an action RF(G) → Isom(XG) by isometries of RF(G) on a canonically associated R-tree XG. We give an overview mostly focusing on the more basic aspects of this theory, up to and including the universal property of RF-groups and their associated R-trees.

A 3-year-old black male child with X-linked chronic granulomatous disease and red cells of the rare McLeod phenotype is presented. The red cells showed acanthocytosis and did not react with anti-KL. Similarly the leukocytes were nonreactive with anti-Kx. The Xk and Xg linkage could not be investigated since all members of his family were Xg (a+).

Disassembly of cell wall polysaccharides by various cell wall hydrolases during fruit softening causes structural changes in hemicellulose and pectin that affect the physical properties and softening of tomato fruit. In a previous study, we showed that the changes in pectin during tomato fruit ripening were unique in each fruit tissue. In this study, to clarify the changes in hemicellulose in t...

Gel foam has the advantages of gel and shows good prospects for applications in fields fire prevention extinguishing. Rheology a significant impact on application foam, but there is little related research. In present study, hydrophilic silica nanoparticles (NPs) water-soluble polymer xanthan gum (XG) were combined with fluorocarbon surfactant (FS-50) hydrocarbon (APG0810) to create foam. The f...

The aim of this research was to study the feasibility defatted wheat germ flour (DWGF) alone or in combination with xanthan gum (XG) as egg yolk substitutes mayonnaise formulation. In research, DWGF used at different levels (0, 25, 75 and 100%) XG (0.2%) substitutes. effects these substitutions on stability, textural rheological characteristics were investigated. According results, can be an su...

Viscosity-modified diet through thickeners is used as a strategy to circumvent swallowing problems by oropharyngeal dysphagia patients. Most commercial products present xanthan and starch in their formulations, but flaxseed gum (FG) potential thickener for liquid food that provides additional health benefits. FG was mixed either with modified (MS) and/or (XG), varying biopolymers’ concentration...

Let K be a field of characteristic pi^O, to exclude trivial cases) and let G be a finite goup. A XG-module M is a finite dimensional K-vector space, on which G acts Jf-linearly from the left. The Green ring a(G) of G(w.r.t. K) is the free abelian group, spanned by the isomorphism classes of indecomposable i£G-modules, with the multiplication induced from the tensor product © x of KGmodules (see...

Pear pomace powder (PPP), xanthan gum (XG), and their combined effect on batter rheology, pasting properties, the quality parameters of quinoa-based gluten-free cupcakes (GFC) were investigated. The water-retention capacities flour blends, batters’ rheological blends’ properties analyzed characteristics GFCs determined. addition XG to formulation led an increase in peak viscosity, final breakdo...