Multinuclear solid-state nuclear magnetic resonance (NMR) techniques are useful for structural investigations of insoluble and amorphous natural products, have been gaining importance in coal chemistry. In addition to iron ore, is essential as steel raw material, but the physical properties remained unclear. Valuable information on coal, such cluster size, chemical distribution various function...

Preceramic polymer routes, which produce ceramic products called polymer-derived ceramics (PDCs) from molecular precursors, have been developed as a powerful tool to synthesize reduced in different morphologies (fibers, coatings and monoliths) for over half century. In recent years, pore control of porous monoliths has attracted attention improving their functionalities, driven the preceramic r...

introduction: quality of life play a considerable role in individual and social health. low back pain is the most common musculoskeletal disorders and cause negative impacts on various aspects of life. the aim of study was to compare the quality of life of students with and without low back pain.  materials and methods: this was across-sectional study performed among students at the faculty of ...

Background: Splicing by overlap extension (SOE) PCR is used to create mutation in the coding sequence of an enzyme in order to study the role of specific residues in protein’s structure and function. Objectives: We introduced a nested-SOE-PCR (N –SOE-PCR) in order to increase the specificity and generating mutations in a gene by SOE-PCR.   Materials and Methods: Genomic DNA from Bacillus thermo...

We briefly review and summarize the results in research of China High Technology Networks(CHTN), which can be composed by three levels. A weighted framework is put forward and can be used to study some similar networks. According to our idea and method, the CHTN is constructed. Then the CHTN’s topological properties are investigated, including degree distribution, shortest path length, clusteri...

Three experiments investigated how visual objects prime the actions they afford. The principal concern was whether such visuomotor priming depends upon a concurrent visual input--as would be expected if it is mediated by on-line dorsal system processes. Experiment 1 showed there to be essentially identical advantages for making afforded over non-afforded responses when these were made to object...

This book is of only marginal use as a Perl primer for linguists or as a university textbook. Thick with explicatory text in 10-point Minion font, some chapters, such as that on references and modules, are consequently very difficult to work through, and are written in sometimes abstruse language (“The other thing is something to do with how we use functions,” p. 55), which further impedes full...