is a xylem-limited plant pathogenic bacterium that is a menace to the agriculture worldwide, threating economically relevant crops such as almond. The pathogen presents a dual lifestyle in the plant xylem, consisting of sessile microbial aggregates and mobile independent cells that move by twitching motility. The latter is essential for the systemic colonization of the host and is mediated through type IV pili.
View Article and Find Full Text PDFStudies on self-binding hot-pressed fiberboards using agricultural byproducts aim to identify alternatives to scarce wood resources. Particle size and mixture significantly impact strength, although direct comparisons are difficult due to differences in study methods. We evaluated fiberboards made from the two perennial biomass crops and and compared them to (spruce), using five distinct particle size blends prepared from milled and sieved particles, respectively.
View Article and Find Full Text PDFThe synthesis of an extensive series of new squaramides with high potential in treating drug-resistant tuberculosis employing the Liebeskind-Srogl cross-coupling reaction is presented. Using the protocol given and various substrates, we assessed the scope and limitations of our methodology and prepared an extensive range of desired compounds. Moreover, H NMR spectra in solution show the presence of two rotational conformers (rotamers) in special cases.
View Article and Find Full Text PDFSome students suffer from math anxiety and experience negative emotions in mathematics education. Children's math anxiety is negatively related to their math achievement, suggesting that math anxiety puts their math learning at risk. Several theoretical accounts have been proposed that help to explain this association between math anxiety and achievement.
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