Abstract A proven method to enhance the mechanical properties of additively manufactured plastic parts is embedding continuous fibers. Due its great flexibility, fiber-reinforced material extrusion allows fiber strands be deposited along optimized paths. Nevertheless, fibers have so far been embedded in contour-based or on basis regular patterns. The outstanding strength and stiffness longitudi...

The site and character of precious and basemetal epithermal deposits is determined by several principal factors which include: structure, stratigraphy, lithology, pressure and temperature. hydrology, chemistry of the mineralizing fluid, and syn-hydrothermal development of permeability or changes in hydraulic gradient (White and Hedenquist, 1990). This study investigates the syn-hydrothermal dev...

The widely adopted K-means clustering algorithm uses a sum of squared error objective function. A detailed analysis shows the close relationship between K-means clustering and principal component analysis (PCA) which is extensively utilized in unsupervised dimension reduction. We prove that the continuous solutions of the discrete K-means clustering membership indicators are the data projection...

Apple cider, with (0.1%) and without potassium sorbate, was packaged in 3 different materials to evaluate the effects of irradiation (2 kGy) and storage on flavor. Irradiated apple cider samples were compared with unirradiated samples stored in glass jars. Volatile flavor compounds, soluble solids, and titratable acidity were determined weekly throughout 3 wk of refrigerated storage. Oxygen per...

The Density Functional Theory (DFT) method and the 6-31G** basis set were employed to calculate the molecular properties of artemisinin and 20 derivatives with different degrees of cytotoxicity against the human hepatocellular carcinoma HepG2 line. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were employed to select the most important descriptors related to antican...

Recording of glutamate-activated currents in membrane patches was combined with RT-PCR-mediated AMPA receptor (AMPAR) subunit mRNA analysis in single identified cells of rat brain slices. Analysis of AMPARs in principal neurons and interneurons of hippocampus and neocortex and in auditory relay neurons and Bergmann glial cells indicates that the GluR-B subunit in its flip version determines for...

Before being processed into composites, reinforcement fabrics may undergo repeated involuntary deformation, the complete sequence of which is here referred to as specimen history. To mimic its effect, fabric specimens were subjected to sequences of defined shear operations. For single fabric layers with unconstrained thickness, quantitative evaluation of photographic image data indicated that r...