A Hybrid Ring‐Opening Metathesis Polymerization Catalyst Based on an Engineered Variant of the β‐Barrel Protein FhuA

A β‐barrel protein hybrid catalyst was prepared by covalently anchoring a Grubbs–Hoveyda type olefin metathesis catalyst at a single accessible cysteine amino acid in the barrel interior of a variant of β‐barrel transmembrane protein ferric hydroxamate uptake protein component A (FhuA). Activity of this hybrid catalyst type was demonstrated by ring‐opening metathesis polymerization of a 7‐oxanorbornene derivative in aqueous solution.     

Cytotoxic constituents from the leaves of Cinnamomum subavenium

Two new butanolides, subamolide D (1) and subamolide E (2), and a new secobutanolide, secosubamolide A (3), along with 21 known compounds were isolated from the leaves of Cinnamomum subavenium. The structures of 1-3 were determined by spectroscopic analysis. Propidium iodide staining and cytometry analysis were used to evaluate the cell cycle progression of the treated SW480 cells and it was found that 1 and 2 caused DNA damage in a dose- and time-dependent manner.     

Bridge between bound state and reaction effective nucleon-nucleon potentials

It has been a long standing problem to find the connection between the realistic nucleon-nucleon interaction and the interaction between two nucleons when they are embedded inside a nuclear medium, the so-called ‘effective interaction’. On the one hand various many-body approaches have been employed, while on the other hand, information is sought on the basis of static nuclear properties. Both provide partial information. An attempt is made to understand if there is an inherent link, a bridge, which connects all these informations, through the study of heavy ion fusion reactions.     

A new lignan from the roots of <Emphasis Type="Italic">Cinnamomum philippinense</Emphasis>

Cinnamophilin A (1), a new Cinnamomum lignan, has been isolated from Cinnamomum philippinense (Merr.) Chang (Lauraceae), and its structure was characterized and identified by physical and spectral evidence.     

A complexity perspective to deploy artistic exhibits

The design for the deployment of artistic statues in an exhibition area comes from the designer's experience, and whether such a design is adequate having no simple applicable criterion. The proposed model, deploying statues (DSs) model, not only applies the fractal dimension to measure the spatial complexity as its objective but also considers the traffic flow zone, the number of DSs, the average diameter of the statue, and the minimum allowable distance of adjacent artistic statues to arrange the spatial configuration in an exhibition area. The minimal complexity (fractal dimension) is mainly focused on because exhibiting designers deem that the spatial simplicity of an exhibition area leads to comfortable vision for a visitor. Indeed, this paper describes an applicable aspect of fractals. A computational intelligence written in Fortran Program to perform the spatial arrangement of artistic statues in an exhibition area is provided, and its adaptability has been explored by pilot tests of benchmark cases. Then, a case study through visual reality deployment for the Hosanna Museum at Chiayi Taiwan is followed. This study indeed provides a valuable tool in conducting the pre-stage of thinking process for exhibiting designers in deploying exhibits.