401 research outputs found

    Using WWW to improve software development and maintenance: application of the LIGHT system to ALEPH programs

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    Programmers who develop, use, maintain, modify software and faced with the problem of scanning and understanding large amounts of documents, ranging from source code to requirements, analysis and design diagrams, user and reference manuals etc. This task is non trivial and time consuming LIGHT, LIfe cycle Global HyperText is an attempt to solve the problem using WWW technology. The basic idea is to make all the software documents, including code, available and cross-connected on the WWW. The first application of this concept to go in production is JULIA?LIGHT, a system to convert and publish on WWW the software documentation of the JULIA reconstruction program of the ALEPH experiment at CERN European Organisation for Particle Physics, Geneva

    Lunar laser ranging in infrfared at hte Grasse laser station

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    For many years, lunar laser ranging (LLR) observations using a green wavelength have suffered an inhomogeneity problem both temporally and spatially. This paper reports on the implementation of a new infrared detection at the Grasse LLR station and describes how infrared telemetry improves this situation. Our first results show that infrared detection permits us to densify the observations and allows measurements during the new and the full Moon periods. The link budget improvement leads to homogeneous telemetric measurements on each lunar retro-reflector. Finally, a surprising result is obtained on the Lunokhod 2 array which attains the same efficiency as Lunokhod 1 with an infrared laser link, although those two targets exhibit a differential efficiency of six with a green laser link

    Preparation of multifunctional hollow fiber nanofiltration membranes by dynamic assembly of weak polyelectrolyte multilayers

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    In this work, we investigate the effect of preparation conditions for dynamic layer-by-layer (LbL) coating, to prepare multifunctional hollow fiber nanofiltration (NF) membranes. Dynamic coating was performed at constant pressure and at variable cross flow speeds. In this way, polyelectrolyte multilayers (PEMs) were formed of the weak polyelectrolytes poly(acrylic acid) (PAA) and poly(allylamine hydrochloride) (PAH), on a negatively charged polyethersulfone ultrafiltration (UF) support. The resulting membrane performance was investigated and compared to membranes prepared by different methods (dip coating and dead end filtration), and it was found to be comparable. It was shown that PAH/PAA multilayers can be fabricated reproducibly and homogenously using optimised dynamic LbL deposition conditions on single fiber module (surface area of 6.2 cm2) as well as on a module of 15 fibers (surface area of 67 cm2). Moreover, the approach of dynamic coating could be easily up scaled to coat existing UF modules. The prepared membranes reject the solutes on the basis of size exclusion and Donnan exclusion, retaining small organic solutes and divalent ions. Membranes terminated with PAA exhibit a low fouling tendency compared to membranes terminated with PAH and compared to the UF support membrane. Moreover, if severe membrane fouling would occur after prolonged use, the PEM coating, including any attached foulants can be removed by rinsing with a solution that combines a low pH and a high salinity (pH 3, 3 M). The surface of bovine serum albumin (BSA) fouled membranes were successfully cleaned at least twice, after which a new PEM coating could be re-applied by active coating

    Stronger diversity effects with increased environmental stress : a study of multitrophic interactions between oak, powdery mildew and ladybirds

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    Recent research has suggested that increasing neighbourhood tree species diversity may mitigate the impact of pests or pathogens by supporting the activities of their natural enemies and/or reducing the density of available hosts. In this study, we attempted to assess these mechanisms in a multitrophic study system of young oak (Quercus), oak powdery mildew (PM, caused by Erysiphe spp.) and a mycophagous ladybird (Psyllobora vigintiduo-punctata). We assessed ladybird mycophagy on oak PM in function of different neighbourhood tree species compositions. We also evaluated whether these species interactions were modulated by environmental conditions as suggested by the Stress Gradient Hypothesis. We adopted a complementary approach of a field experiment where we monitored oak saplings subjected to a reduced rainfall gradient in a young planted forest consisting of different tree species mixtures, as well as a lab experiment where we independently evaluated the effect of different watering treatments on PM infections and ladybird mycophagy. In the field experiment, we found effects of neighbourhood tree species richness on ladybird mycophagy becoming more positive as the target trees received less water. This effect was only found as weather conditions grew drier. In the lab experiment, we found a preference of ladybirds to graze on infected leaves from trees that received less water. We discuss potential mechanisms that might explain this preference, such as emissions of volatile leaf chemicals. Our results are in line with the expectations of the Natural Enemies Hypothesis and support the hypothesis that biodiversity effects become stronger with increased environmental stress

    Effects of central administration of Coriandrum sativum essential oil on anxiety-like behavior in chicks

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    Fil: Gastón, S. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Gastón, S. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas. Laboratorio de Tecnología Química; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Aplicada; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Coriandrum sativum ("cilantro") is an herb with culinary use. Coriandrum essential oil (CEO) is an aromatic complex mixture of volatile terpenes with antibacterial, antifungal, antioxidant activity and when it is systemically administered it has anxiolytic and antidepressant effects. Linalool is a major constituent of CEO and its inhalation has anxiolytic and sedative effects.www.ricifa.com.arFil: Gastón, S. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Gastón, S. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas. Laboratorio de Tecnología Química; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Aplicada; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Otras Ciencias Biológica

    Management of right-sided obstructing colon cancers:scoping review

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    Introduction: Patients presenting with right-sided obstructing colon cancers (ROCCs) typically undergo emergency surgical resection. Emerging evidence suggests using a bridge-to-surgery (BTS) approach with a stoma or stent reduces mortality and perioperative morbidity while not effecting long-term survival. The aim of this scoping review was to provide a comprehensive report of the recent literature reporting the management of ROCC. Methods: Systematic searches were conducted of the Embase, MEDLINE, and CENTRAL databases for studies published between 2000 and 2025. Searches were uploaded to the Covidence review tool and dual screened (abstract and full text) against prespecified inclusion criteria. Key data extraction points were: study characteristics, interventions used, patient and oncological descriptors, and outcomes reported. Data are reported descriptively as per PRISMA-ScR guidance. Results: Twenty-seven studies were identified: 22 primary research studies and 5 systematic reviews. Primary research studies were predominantly retrospective cohorts (20), with nine single-centre studies. Emergency resection was the most common intervention (7528, 75.4%), ahead of a colonic stent as a BTS (2289, 22.9%) and defunctioning stoma as a BTS (114, 1.1%). Of note, the vast majority of patients treated with a stent were from a single paper. There were 76 different descriptors reported, with 61 reported in fewer than five studies. In all, 70 perioperative, 8 stent-specific, and 21 oncological outcomes were reported. The focus was on perioperative outcomes, with only two oncological outcomes reported in five or more studies. Of the five included systematic reviews, four compared emergency resection to BTS and reported favourable outcomes of the BTS approach. Conclusion: Current available evidence is non-randomized and limited by retrospective study design. Although BTS appears favourable, studies are poorly powered, meaning the current evidence is insufficient to support BTS approaches

    Sejarah, Faktor-Faktor, Karakteristik Filsafat Umum

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    This paper explores the development of general philosophy, highlighting the contributions of various eras of thought from ancient Greek philosophy to modern and contemporary philosophy. This research uses a descriptive qualitative method with a historical-philosophical approach. Data collection was carried out through a literature review which included books, journal articles and documents related to the development of general philosophy from various eras. This study underlines the important role of figures such as Socrates, Plato, Aristotle, as well as modern thinkers such as Descartes and Kant in shaping philosophical discourse which includes metaphysics, epistemology, ethics and aesthetics. With a historical-philosophical approach, this research identifies the main characteristics of general philosophy, such as radical thinking, hunting for truth, and seeking clarity

    Screening of some Ascomycetes and Basidiomycetes species for the production of 1- phenylethanol enantiomerically pure

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    Fil: Decarlini, M. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Colavolpe, B. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Albertó, E. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Química. Cátedra de Química Aplicada; Argentina.The asymmetric reduction of prochiral ketones represents a pivotal transformation for the production of chiral alcohols. Several of them are considered as key starting materials in obtaining pharmaceuticals.Fil: Decarlini, M. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Colavolpe, B. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Albertó, E. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Química. Cátedra de Química Aplicada; Argentina.Otras Ciencias Química
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