In this paper, we investigate the elements whose (b, c)-inverse is idempotent in a monoid. Let S be monoid and a, b, c ? S. Firstly, give several characterizations for idempotency of a||(b,c) as follows: exists if only cab = cb, cS cbS, Sb Scb both 1||(b,c) exist 1||(b,c), which establish relationship between 1||(b,c). They imply that merely depends on but independent when idempotent. Particula...

the present nuclear leakage crisis from japan is a topic to be discussed in present public health. in radiology, the leaked radioactive elements are considered hazard. here, the author briefly reviews and discusses on two important radio-hazard elements in post nuclear power plant crisis, radioactive iodine and radioactive cesium. based on previous similar nuclear crisis in russia, it is eviden...

Composite transposons are key vehicles for the worldwide spreading of genes that allow bacteria to survive toxic compounds. Composite transposons consist of two smaller transposable elements called insertion sequences (ISs), which flank the genes that permit such survival. Each IS in a composite transposon can either transpose alone, selfishly, or it can transpose cooperatively, jointly with th...

The need of polygonal elements to represent the domain is gaining interest among structural engineers. The objective is to perform static analysis and topology optimization of a given continuum domain using the rational fraction type shape functions of six node hexagonal elements. In this paper, the main focus is to perform the topology optimization of two-dimensional plate structures using Evo...

Myc and Mad are basic helix-loop-helix leucine zipper (bHLH-LZ) proteins that heterodimerize with Max to bind DNA and thereby influence the transcription of Myc-responsive genes. Myc-Max dimers transactivate whereas Mad-Max-mSin3 complexes repress Myc-mediated transcriptional activation. We have previously shown that the N-terminal mSin3 binding domain and the centrally located bHLH-LZ are requ...

O ver the last 20 years, many cell biological studies have moved from the single-cell level to the tissue level, and even to whole animals. This progress has been led by developments in fl uorescence microscopy that permit molecular observations from single cells within intact tissue or animals. Concurrent developments in fl uorescent probes, especially the cloning of the Green Fluorescent Prot...

This paper focuses on the relationship between an $L$-subset and the system of level-elements induced by it, where the underlying lattice $L$ is a complete residuated lattice and the domain set of $L$-subset is an $L$-partially ordered set $(X,P)$. Firstly, we obtain the sufficient and necessary condition that an $L$-subset is represented by its system of level-elements. Then, a new representat...

sir, the big flooding in thailand in 2011 is one of the problematic flooding in asia. it causes several destroying to many things in the disaster areas. an important concern is on the effect on the setting with the radioactive elements usage. in thailand, there are some places with radioactive elements including to the university, hospital as well as radioactive research center. luckily, during...

Let G be a group. A subset X of G is a set of pairwise noncommuting elements if xy ̸= yx for any two distinct elements x and y in X. If |X| ≥ |Y | for any other set of pairwise non-commuting elements Y in G, then X is said to be a maximal subset of pairwise non-commuting elements. In this paper we determine the cardinality of a maximal subset of pairwise non-commuting elements in any non-abelian...