10,973 research outputs found
Notazioni mediche nella Vita Nili
No full textRicerca delle conoscenze mediche dell'agiografo di S. Nilo di Rossano e della diffusione dei testi medici greci nell'Italia meridionale bizantin
Bio-fuels, wait a minute
No full textThe ethical relevance of this topic is clear. Bio-fuels show great promise as a sustainable energy source, but there are also worries that its production will be at the expense of food security, especially for people in developing countries. The author defends the unconventional position that the first generation bio-fuels is not sustainable and that the Netherlands should focus exclusively on second generation bio-fuels, which are made from non-food crops. One could argue about this and the jury suspects that there are enough people to be found at TU Delft who would disagree. However, the jury applauds the fact that the author takes a clear moral standpoint and - even more important - tries to give a plausible argumentation to support it. Furthermore, the author shows himself to be technically well informed
Some investigations concerning the CTMC and the ODE model derived from Bio-PEPA
Get PDF<p>Bio-PEPA is a recently defined language for the modelling and analysis of biochemical networks. It supports an abstract style of modelling, in which discrete levels of concentration within a species are considered instead of individual molecules. A finer granularity for the system corresponds to a smaller concentration step size and therefore to a greater number of concentration levels. This style of model is amenable to a variety of different analysis techniques, including numerical analysis based on a CMTC with states reflecting the levels of concentration.</p>
<p>In this paper we present a formal definition of the CTMC with levels derived from a Bio-PEPA system. Furthermore we investigate the relationship between this CTMC and the system of ordinary differential equations (ODEs) derived from the same model. Using Kurtz's theorem, we show that the set of ODEs derived from the Bio-PEPA model is able to capture the limiting behaviour of the CTMC obtained from the same system. Finally, we define an empirical methodology to find the granularity of the Bio-PEPA system for which the ODE and the CTMC with levels are in a good agreement. The proposed definition is based on a notion of distance between the two models. We demonstrate our approach on a model of the Repressilator, a simple biochemical network with oscillating behaviour.</p>
Bio-inspired multilayered and multilanguage Arabic script character recognition system
No full textBio-inspired multilayered and multilanguage Arabic script character recognition syste
Steve Reich : a bio-bibliography
No full textIn the late 1960s and early 1970s, Steve Reich was considered a fringe experimentalist. His work consisted largely of repeating, slowly changing patterns unlike either the serialism or the aleatory that predominated at that time. Today, however, Reich is one of the most prominent and celebrated contemporary composers, one about whom the scholarly and popular literature offers an assortment of critical, historical, and analytical perspectives. Author D.J. Hoek's bio-bibliography serves as an essential guide to this literature, comprehensively surveying Reich's life and work. Included are details of all of Reich's compositions: dates, instrumentation, premiere performances, and publishers; a discography listing all commercial recordings of the composer's oeuvre; and an annotated bibliography of publications in English, French, German, and Italian. The Reich scholar or aficionado could not find a more thorough encapsulation of his brilliant career
Bio-Based Electrospun Nanofiber of Polyhydroxyalkanoate Modified with Black Soldier Fly’s Pupa Shell with Antibacterial and Cytocompatibility Properties
No full textWe report on the antibacterial and cytocompatibility
properties of a bio-based electrospun polyhydroxyalkanoate (PHA) nanofiber
modified with Black Soldier Fly (BSF) pupa shell. A 5–50 μm
chitosan powder (CSP) was made by grinding BSF pupa shell in water,
acid, alkali. CSP was combined with PHA in an electrospinning machine
using a biaxial feed method and manufactured into a 50–500
nm antibacterial nanofiber. We studied the morphology, mechanical
properties, water absorption, and antibacterial properties of the
electrospun PHA/CSP nanofiber. To improve the fiber’s compatibility
and functionality, acrylic acid (AA) was grafted onto PHA. The resulting
tensile properties and morphological characterizations indicated enhanced
adhesion between CSP and PHA-g-AA nanofiber, as well
as an improvement in its water resistance and tensile strength, compared
with the PHA/CSP nanofiber. To study the cytocompatibility of the
material, human foreskin fibroblasts were seeded onto the nanofiber
specimens with 3.0 and 6.0 wt % CSP. Increasing the CSP content in
PHA/CSP and PHA-g-AA/CSP nanofibers enhanced cell
proliferation; additionally, the nanofibers with CSP showed strong
inhibition of bacteria. The enhanced antibacterial and biodegradable
properties of PHA-g-AA/CSP and PHA/CSP nanofibers
demonstrate their potential for biomedical material applications
Bio-Aggregate-Based Building Materials Applications to Hemp Concretes
No full textHempcrete Wall on a Wooden Skeleton, by Lifecycle Analysis: Feedback on the LCA Experiment from 2005, Marie-Pierre Boutin and Cyril Flamin. About the Authors Sofiane Amziane is Professor and head of the Civil Engineering department at POLYTECH Clermont-Ferrand in France. He is also in charge of the research program dealing with bio-based building materials at Blaise Pascal University (Institut Pascal, Clermont Ferrand, France). He is the secretary of the RILEM Technical Committee 236-BBM dealing with bio-based building materials and the author or co-author of over one hundred papers in scientific journals such as Cement and Concrete Research, Composite Structures or Construction Building Materials as well as international conferences. Laurent Arnaud is a Bridges, Waters and Forestry Engineer (Ingénieur des Ponts, Eaux et Forêts) and researcher at Joseph Fourier University in Grenoble, France. He is also Professor at ENTPE (Ecole Nationale des Travaux Publics de l'Etat). Trained in the field of mechanical engineering, his research has been directed toward the characterization and development of new materials for civil engineering and construction. He is head of the international committee at RILEM - BBM, as well as the author of more than one hundred publications, and holder of an international invention paten
Bio Information Center Construction
No full textBio Information Center construction. View looking North. Workers and crane in action. 1976 pix aa.1111_1976_1057_0009
Bio Information Center Construction
No full textBio Information Center construction. View looking from the East across interstate. 1976 pix aa.1111_1976_1057_0008
Bio Information Center Construction
No full textBio Information Center construction. Aerial view looking down from the East. 1976 pix aa.1111_1976_1057_0004
- …
