The aim of this toughness optimization is to find out the optimal mixing ratio of PA 6/PA 66. Applications of PA 6/PA 66 in the automotive industry and Specific client wishes are the main reasons for black-coloring of the PA materials. The influence of several black-colorants (carbon black, nigrosine, spinel, iron oxide) on mechanical and fracture mechanical properties of the PA composites is also investigated using fracture mechanical methods. As experimental fracture mechanical method, preferentially, the instrumented Charpy impact ZD1839 Protein Tyrosine Kinase inhibitor test (ICIT) and the new Cut method to
determine the stable crack growth of glass-fiber reinforced materials was used. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2245-2252, 2009″
“The chloroplast is a pivotal organelle in plant cells and eukaryotic algae to carry out photosynthesis, which provides the primary source of the world’s food.
The expression of foreign genes in chloroplasts offers several advantages over their expression ill the nucleus: high-level expression, transgene stacking in operons and a lack of epigenetic interference allowing stable transgene expression. In addition, transgenic chloroplasts are generally not transmitted through pollen Selleck PR-171 grains because of the cytoplasmic localization. In the past two decades, great progress in chloroplast engineering has been made. In this paper, we review and highlight recent studies of chloroplast engineering, including chloroplast transformation procedures. controlled expression of plastid transgenes in plants, the expression of foreign genes for improvement of plant traits, the production of biopharmaceuticals, metabolic pathway engineering in plants, plastid transformation to study RNA editing, and marker gene excision
system.”
“A battery trial was conducted to evaluate the comparative pathogenicity of five field strains of Eimeria tenella from Behera, Khafr El-Sheikh, Alexandria, Gharbia and Matrouh provinces in Egypt. Two-week-old broiler chickens were infected with 25 x 10(3) sporulated oocysts of each strain of E. tenella. The comparative pathogenicity of the strains was assessed by calculating body weight gain, feed conversion ratio, lesion scores, dropping nature scores, Bcl-2 cleavage cecal scrapings, mortality percentage and oocysts count. Hematological parameters including hemoglobin (Hb) content, packed cell volume (PCV%) and total erythrocytic count, were also evaluated. There were different degrees of pathogenicity between the strains. (C) 2010 Elsevier Ltd. All rights reserved.”
“Structural characterization in polymer nanocomposites is usually performed using X-ray scattering and microscopic techniques, whereas the improvements in processing and mechanical properties are commonly investigated by rotational rheometry and tensile testing.