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141.
Oussama Yousfi Patricia Donnadieu Yves Bréchet Florence Robaut Frédéric Charlot Andreas Kasper Francis Serruys 《Acta Materialia》2010,58(9):3367-3380
Nickel sulphide inclusions are known to be responsible for delayed fracture in tempered glasses due to phase transformation within the inclusion. Microstructural identification of the phase transformation mechanisms in the Ni–S system close to the NiS composition were carried out on a series of partially transformed states. Observations allow to investigate the morphological evolution during transformation, the phase orientation relationships and the first stages of the transformation were investigated by optical microscopy, electron backscatter diffraction, and scanning and transmission electron microscopy. The transformation mechanisms change significantly with the change in sulphur content of the α-NiS phase. Massive transformation is observed for near-stoichiometric composition. For overstoichiometric composition, the transformation is controlled by a long-range diffusion mechanism. The influence of stoichiometry and impurities (Fe) on the microstructural evolution and transformation mechanisms has also been studied. 相似文献
142.
Microbial Quality of Industrial Liquid Egg White: Assumptions on Spoiling Issues in Egg‐Based Chilled Desserts
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Clarisse Techer Amina Daoud Marie‐Noëlle Madec Michel Gautier Sophie Jan Florence Baron 《Journal of food science》2015,80(2):M389-M398
As a 1st step, this study aimed at investigating the microbial quality of liquid egg white in a French egg processing company. Thirty raw and 33 pasteurized liquid egg white samples were analyzed. Pasteurization was globally found efficient on mesophilic contaminants (1.7 ± 1.6 and 0.8 ± 0.9 log CFU/mL in raw and pasteurized samples, respectively), including for the control of Salmonella. However, Gram‐positive enterococci were still detected in the pasteurized samples. As a 2nd step, a representative bacterial collection was built for exploring the spoilage issue in egg‐based chilled desserts. Custard cream was chosen as growth medium since this food is widely used for the production of French chilled desserts. All of the 166 isolates of the bacterial collection were shown to be able to grow and to induce spoilage of the custard cream at refrigeration temperature (10 °C). Several spoilage types were highlighted in the custard cream, on the basis of changes regarding pH, consistency, production of holes or gas. As a 3rd step, bacterial enzymatic activities were explored on custard cream‐based agar media. The bacterial collection was reduced to 43 isolates, based on further selection regarding the genera and the spoilage types previously highlighted. Albeit to different degrees, all these isolates were able to produce proteases. A large part of these isolates also expressed lipolytic and amylolytic activities. This study emphasizes the need to control egg white contamination and especially with Gram‐positive heat‐resistant Enterococi, in order to guarantee the shelf life of egg‐based chilled desserts. 相似文献
143.
Pierre Bisquert Madalina Croitoru Florence Dupin de Saint-Cyr Abdelraouf Hecham 《Minds and Machines》2017,27(1):233-252
In this paper we present an interdisciplinary approach that concerns the problem of argument acceptance in an agronomy setting. We propose a computational cognitive model for argument acceptance based on the dual model system in cognitive psychology. We apply it in an agronomy setting within a French national project on durum wheat. 相似文献
144.
Catherine Chapon Florence Franconi Franck Lacoeuille François Hindré Patrick Saulnier Jean-Pierre Benoit Jean-Jacques Le Jeune Laurent Lemaire 《Magma (New York, N.Y.)》2009,22(3):167-174
Introduction The aim of this work was to map E-selectin expression in a traumatic brain injury model using a newly-designed MR contrast
agent. Iron cores, responsible for susceptibility effects and therefore used as T2* contrast agents, need to be coated in
order to be stabilized and need to be targeted to be useful.
Methods We have designed a molecule coating composed, at one end, of bisphosphonate to ensure anchorage of the coating on the iron
core and, at the other end, of Fukuda’s defined heptapeptide known to target selectin binding sites.
Conclusion The synthesized nanoparticles were able to non-invasively target the traumatic brain lesion, inducing a specific T2* decrease
of about 25% up to at least 70 min post-injection of the targeted contrast agent. 相似文献
145.
Bentein Kathleen; Vandenberghe Christian; Vandenberg Robert; Stinglhamber Florence 《Canadian Metallurgical Quarterly》2005,90(3):468
Through the use of affective, normative, and continuance commitment in a multivariate 2nd-order factor latent growth modeling approach, the authors observed linear negative trajectories that characterized the changes in individuals across time in both affective and normative commitment. In turn, an individual's intention to quit the organization was characterized by a positive trajectory. A significant association was also found between the change trajectories such that the steeper the decline in an individual's affective and normative commitments across time, the greater the rate of increase in that individual's intention to quit, and, further, the greater the likelihood that the person actually left the organization over the next 9 months. Findings regarding continuance commitment and its components were mixed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
146.
Tassadit Djioua Florence Charles Murillo Freire Jr Heloisa Filgueiras Marie‐Noëlle Ducamp‐Collin Huguette Sallanon 《International Journal of Food Science & Technology》2010,45(4):849-855
The influence of heat treatment combined with coating on sensory quality, physico‐chemicals characteristics (firmness, colour, pH, titratable acidity, total soluble solids and total carotenoids content) and microbiological quality of fresh‐cut mangoes were studied. Whole mangoes (Mangifera indica cv ‘Tommy Atkins’) were subjected to hot water dipping (HWD) at 50 °C for 30 min and cooled for 15 min. Heated and unheated fruits were minimally processed and mango cubes were coated with chitosan solution (0.25% w/v) dissolved in 0.5% (w/v) citric acid, and stored for 9 days at 6 °C under ambient atmosphere. This study showed that both HWD 50 °C for 30 min and chitosan coating, either alone or combined, did not affect the taste and the flavour of mangoes slices. The chitosan coating combined with HWD or not inhibited the microbial growth for 9 days at 6 °C. Indeed chitosan coating was used for his antimicrobial proprieties. HWD 50 °C for 30 min was the beneficial treatment to maintain firmness and colour during 9 days at 6 °C. 相似文献
147.
Vojtech Svoboda Heinz Wenzl Rudi Kaiser Andreas Jossen Ian Baring-Gould James Manwell Per Lundsager Henrik Bindner Tom Cronin Per Nrgrd Alan Ruddell Adolfo Perujo Kevin Douglas Carlos Rodrigues Antnio Joyce Stathis Tselepis Nico van der Borg Frans Nieuwenhout Nigel Wilmot Florence Mattera Dirk Uwe Sauer 《Solar Energy》2007,81(11):1409-1425
Operating conditions in off-grid renewable energy systems (RES) vary significantly in different applications and locations. To describe RES and the operating conditions of their components it is useful to define categories of similar operating conditions. Categories can also be used for lifetime considerations of RES components, for making recommendations and for analysing the properties and performance of a RES and its components. Categories support system designers and an economic analysis. This paper describes the process and the results of creating RES categories of similar operating conditions for batteries. Categories are defined in such a way that batteries belonging to the same category are subjected to similar operating conditions and a similar combination of stress factors. The results provide a comprehensive overview of battery operating conditions in existing off-grid renewable energy systems. This work is part of the EU research project Benchmarking.1 相似文献
148.
Application of enzymes to garlic prior to steam distillation/hydrodistillation resulted in a two fold increase in the yield of oil. The oil yield in case of cellulase, pectinase, protease and viscozyme pretreatment was in the range of 0.39–0.51%, as against 0.28% in a control sample by steam distillation, and in the range of 0.45–0.57% by hydrodistillation as against 0.31% in a control sample. Profiling of the garlic oil thus obtained was carried out by GC–MS. Di-2-propenyl trisulfide (52%) along with the corresponding di- and tetra-sulphides (11% and 5%) constituted the major portion of the oil. The other major flavour compounds identified were methyl 2-propenyl trisulfide (11.8%), vinyl dithiins (9.9%) and dithianes (4.1%). The studies demonstrate that enzymes facilitate the extraction of garlic oil, resulting in an increase in the yield of oil, with little change either in flavour profile or physicochemical properties of the oil. 相似文献
149.
Mol J. Mary Suji Florence S. Esther Abraham M. 《Wireless Personal Communications》2022,124(3):2427-2445
Wireless Personal Communications - Compact UWB antenna manufactured in twisted F form with slots loaded is exhibited. An ultra-wideband 3.1 GHz to 10.6 GHz with modified ground... 相似文献
150.
Hélène Lotz Charly Carrière Christian Bataillon Emmanuel Gardes Isabelle Monnet Eddy Foy Michel L. Schlegel James J. Dynes Delphine Neff Florence Mercier-Bion Philippe Dillmann 《工业材料与腐蚀》2021,72(1-2):120-130
Corrosion experiments were performed on two metallic substrates, a ferritic–pearlitic steel (P285NH) and a ferritic one (Armco), in silicate environment during 30 days at 120°C. Corrosion products were characterized in terms of morphology (scanning electron microscope and transmission electron microscopy), composition (energydispersive X-ray spectroscopy) and structure (µ-Raman, selected area electron diffraction, X-ray absorption near edge structure). Results show a nanometric inner layer made of compact and adherent nanocrystallized magnetite with, locally a thickness up to several micrometers due to the metal microstructure. An outer layer of Fe-rich phyllosilicate, smectite and serpentine, more porous than the inner one and poorly adherent is observed around both the samples. 相似文献