Ultrathin carbon films were prepared by carbonization of a solution processed polyacrylonitrile (PAN) film in a moderate temperature range (500-700 °C). The films displayed balanced hole (0.50 cm(2) V(-1) s(-1)) and electron mobilities (0.20 cm(2) V(-1) s(-1)) under ambient conditions. Spectral characterization revealed that the electrical transport is due to the formation of sp(2) hybridized c...

To contribute the biological mean of CO2 fixation, more than 200 microalgal isolates were screened from lakes, ponds, sediments, hog wastewater, paddy fields, hot springs, and seawater in Taiwan. Two unicellular microalgae, Chlorella sp. NTU-H15 and Chlorella sp. NTU-H25, were isolated from hog wastewater. In the laboratory, they were able to grow up even in aeration containing CO2 up to 40% an...

Abstract Capparaceae is a pantropical family of Angiosperm with about 40 to 45 genera and 700 900 species, which presents wide morphological variation in flowers fruits. There are 12 30 species the Brazil, half it occurring Atlantic Forest. Here we study Espírito Santo, objective expanding knowledge richness this The was based on analysis herbaria collections, as well samples collected during f...

The electron-transfer (ET) reactions in photosystem I (PS I) of prokaryotes have been investigated in wild-type cells of the cyanobacterium Synechocystis sp. PCC 6803, and in two site-directed mutants in which the methionine residue of the reaction center subunits PsaA and PsaB, which acts as the axial ligand to the primary electron chlorophyll acceptor A(0), was substituted with histidine. Ana...

Extraction and study of the optical properties natural dyes from several plant parts such as leaves, flowers, tubers, fruits have been carried out using a simple maceration method UV-Vis absorption characterization. The samples were divided into groups in this study, namely flower group (Tagetes sp., Paeonia Centaure Chrysanthemum Carthamus tinctorius, Gomphrena globosa, Myosotis sylvatica, Lav...

The Krivine machine is a simple and natural implementation of the normal weak-head reduction strategy for pure λ-terms. While its original description has remained unpublished, this machine has served as a basis for many variants, extensions and theoretical studies. In this paper, we present the Krivine machine and some well-known variants in a common framework. Our framework consists of a hier...