EGG QUALITY COMPARISON OF TWO VIETNAMESE CHICKEN BREEDS (RI AND MIA)

In the context of the valorization of poultry biodiversity, this work represents a step toward a better knowledge of the production abilities of local chicken breeds in Vietnam. Local chicken breeds are indeed particularly well suited for low-input rearing systems, as widely practiced in rural households of Vietnam. The socio-economic importance of these breeds might be underpinned by a market valorization through the mounting of differentiated quality value chains. Such a strategy needs the production potential of these local breeds to be assessed using parameters of egg quality and quantity. This study presents data about egg quality traits in two chicken breeds, the Ri and the Mia. The former is the most widespread breed in Vietnam, while the latter is known to be in danger of extinction. Nineteen parameters of quality of ninety eggs of Ri chickens and sixty eggs of Mia chickens were measured, each for both 40 and 60-weeks old hens to take hens ages into account.Mean egg weight of Mia eggs (44.70g) was significantly (p<0.001) higher than that of Ri eggs (41.68g). The yolk to albumen ratio was not significantly different (p>0.05) between the two breeds at the age of 40 weeks (Ri: 0.55; Mia: 0.58). For 60-weeks old hens, the ratio became significantly (p<0.05) higher in Mia eggs compared to Ri eggs (0.64 vs. 0.57). No significant difference (p>0.05) was recorded between the two breeds for parameters used for egg freshness assessment (Haugh’s units and pH of albumen and yolk) or eggshell resistance (maximal breakage force). Despite the small sample available for the study (due to the low availability of Mia hens and eggs), significant differences in egg quality traits were thus observed between these two breeds.Peer reviewe

Quality of set yogurts made from raw milk and processed milk supplemented with enriched milk fat globule membrane in a two-stage homogenization process

Dairy products are relevant in the food industries as functional ingredients for several food products and contribute towards human nutrition in ameliorating certain disorders. In this study, set yogurts were produced from raw milk and processed milk combined with 4% Lacprodan®PL20 concentration and subjected to two-stage pressure homogenization. The total solids concentration of the mixture was raised to 15% using SMP (skim milk powder). The purpose of this study was to investigate the effect of Lacprodan®PL20 on the set yogurt quality produced by homogenization induced pressure and its interaction with milk components. The changes in the physical and chemical attributes of the milk fat globule membrane (MFGM) via destabilization of the membrane significantly affected the physicochemical properties of set yogurts produced from processed or raw milk. There was a slight variation in MFGM-specific proteins detected in the set yogurts. Set yogurt produced from homogenized raw milk (HRM) had a considerably higher water-holding capacity, firmness, and apparent viscosity. The microstructure of HRM was dense and compacted, unlike non-homogenized raw milk (NRM) with large MFGM fragments and pore holes between the matrixes. The inclusion of homogenization showed a remarkable improvement in set yogurt quality, promoting interaction between MFGM components and milk proteins

Benchopt: Reproducible, efficient and collaborative optimization benchmarks

Numerical validation is at the core of machine learning research as it allows to assess the actual impact of new methods, and to confirm the agreement between theory and practice. Yet, the rapid development of the field poses several challenges: researchers are confronted with a profusion of methods to compare, limited transparency and consensus on best practices, as well as tedious re-implementation work. As a result, validation is often very partial, which can lead to wrong conclusions that slow down the progress of research. We propose Benchopt, a collaborative framework to automate, reproduce and publish optimization benchmarks in machine learning across programming languages and hardware architectures. Benchopt simplifies benchmarking for the community by providing an off-the-shelf tool for running, sharing and extending experiments. To demonstrate its broad usability, we showcase benchmarks on three standard learning tasks: $\ell_2$-regularized logistic regression, Lasso, and ResNet18 training for image classification. These benchmarks highlight key practical findings that give a more nuanced view of the state-of-the-art for these problems, showing that for practical evaluation, the devil is in the details. We hope that Benchopt will foster collaborative work in the community hence improving the reproducibility of research findings.Comment: Accepted in proceedings of NeurIPS 22; Benchopt library documentation is available at https://benchopt.github.io

Lived experiences and political thought of Simone Weil

Y-a-t-il une cohérence interne entre l'expérience vécue et la pensée politique chez Simone Weil ? Afin de ressaisir le questionnement de Simone Weil sur les conditions de possibilité de la liberté, notre recherche porte en premier lieu sur les critiques qu'elle a adressées aux théories philosophiques et politiques de Marx. Il s'agit donc tout autant d'analyser l'influence que Marx a pu avoir sur elle, que de prendre la mesure des écarts que sa critique l'a amenée à poser, et des principes philosophiques dont elle s'est servie à cet effet. Nous étudions, dans un deuxième temps, l'essence même du phénomène de l'oppression et à partir de là, nous dégageons quelques perspectives de la liberté individuelle et sociale, dans le sillage de ce que nous propose la philosophie. Y-a-t-il une cohérence de la ligne politique dans laquelle elle a voulu placer ses engagements sociaux et politiques pour répondre à ce problème ? Il convient pour nous, dans un troisième temps, de connaître et d'examiner le chemin qui l'a amenée à l'expérience religieuse et ce qu'elle a dit sur la connaissance surnaturelle comme la part indispensable pour rendre la vie sociale respirable. Comment concevoir la relation entre les deux expériences politique et religieuse chez elle ? Cette approche religieuse constitue-t-elle une ouverture à l'égard de sa critique politique ?Is there an internal consistency between the experiences lived out by Simone Weil and her political thought ? In order to grasp her questioning of the conditions of the possibility of freedom, our search starts off with the critique which she wrote on the philosophical and political theories of Marx. It is therefore a matter of analysing the influence that Marx might have had on her, as well as studying the differences which her critique led her to present, and the philosophical principles of which she made use to this effect. One should secondly look at the very essence of the phenomenon of oppression, and hence gauge several perspectives on individual and social freedom, in the wake of what is proposed by this philosophy. Is there a consistency in the political line in which she wanted to place her social and political commitments in order to respond to this problem ? One should, thirdly, examine and get to know the path which led her to religious experience and what she said about supernatural knowledge as the essential component for leading a bearable social life. How do we conceive the relationship between both her religious and political experiences ? Does this approach constitute an opening with regards to her political critique

Lived experiences and political thought of Simone Weil

Y-a-t-il une cohérence interne entre l'expérience vécue et la pensée politique chez Simone Weil ? Afin de ressaisir le questionnement de Simone Weil sur les conditions de possibilité de la liberté, notre recherche porte en premier lieu sur les critiques qu'elle a adressées aux théories philosophiques et politiques de Marx. Il s'agit donc tout autant d'analyser l'influence que Marx a pu avoir sur elle, que de prendre la mesure des écarts que sa critique l'a amenée à poser, et des principes philosophiques dont elle s'est servie à cet effet. Nous étudions, dans un deuxième temps, l'essence même du phénomène de l'oppression et à partir de là, nous dégageons quelques perspectives de la liberté individuelle et sociale, dans le sillage de ce que nous propose la philosophie. Y-a-t-il une cohérence de la ligne politique dans laquelle elle a voulu placer ses engagements sociaux et politiques pour répondre à ce problème ? Il convient pour nous, dans un troisième temps, de connaître et d'examiner le chemin qui l'a amenée à l'expérience religieuse et ce qu'elle a dit sur la connaissance surnaturelle comme la part indispensable pour rendre la vie sociale respirable. Comment concevoir la relation entre les deux expériences politique et religieuse chez elle ? Cette approche religieuse constitue-t-elle une ouverture à l'égard de sa critique politique ?Is there an internal consistency between the experiences lived out by Simone Weil and her political thought ? In order to grasp her questioning of the conditions of the possibility of freedom, our search starts off with the critique which she wrote on the philosophical and political theories of Marx. It is therefore a matter of analysing the influence that Marx might have had on her, as well as studying the differences which her critique led her to present, and the philosophical principles of which she made use to this effect. One should secondly look at the very essence of the phenomenon of oppression, and hence gauge several perspectives on individual and social freedom, in the wake of what is proposed by this philosophy. Is there a consistency in the political line in which she wanted to place her social and political commitments in order to respond to this problem ? One should, thirdly, examine and get to know the path which led her to religious experience and what she said about supernatural knowledge as the essential component for leading a bearable social life. How do we conceive the relationship between both her religious and political experiences ? Does this approach constitute an opening with regards to her political critique

Expérience vécue et pensée politique chez Simone Weil

Is there an internal consistency between the experiences lived out by Simone Weil and her political thought ? In order to grasp her questioning of the conditions of the possibility of freedom, our search starts off with the critique which she wrote on the philosophical and political theories of Marx. It is therefore a matter of analysing the influence that Marx might have had on her, as well as studying the differences which her critique led her to present, and the philosophical principles of which she made use to this effect. One should secondly look at the very essence of the phenomenon of oppression, and hence gauge several perspectives on individual and social freedom, in the wake of what is proposed by this philosophy. Is there a consistency in the political line in which she wanted to place her social and political commitments in order to respond to this problem ? One should, thirdly, examine and get to know the path which led her to religious experience and what she said about supernatural knowledge as the essential component for leading a bearable social life. How do we conceive the relationship between both her religious and political experiences ? Does this approach constitute an opening with regards to her political critique ?Y-a-t-il une cohérence interne entre l'expérience vécue et la pensée politique chez Simone Weil ? Afin de ressaisir le questionnement de Simone Weil sur les conditions de possibilité de la liberté, notre recherche porte en premier lieu sur les critiques qu'elle a adressées aux théories philosophiques et politiques de Marx. Il s'agit donc tout autant d'analyser l'influence que Marx a pu avoir sur elle, que de prendre la mesure des écarts que sa critique l'a amenée à poser, et des principes philosophiques dont elle s'est servie à cet effet. Nous étudions, dans un deuxième temps, l'essence même du phénomène de l'oppression et à partir de là, nous dégageons quelques perspectives de la liberté individuelle et sociale, dans le sillage de ce que nous propose la philosophie. Y-a-t-il une cohérence de la ligne politique dans laquelle elle a voulu placer ses engagements sociaux et politiques pour répondre à ce problème ? Il convient pour nous, dans un troisième temps, de connaître et d'examiner le chemin qui l'a amenée à l'expérience religieuse et ce qu'elle a dit sur la connaissance surnaturelle comme la part indispensable pour rendre la vie sociale respirable. Comment concevoir la relation entre les deux expériences politique et religieuse chez elle ? Cette approche religieuse constitue-t-elle une ouverture à l'égard de sa critique politique

Dynamique de formation d'une bande de cisaillement lors d'un test biaxial

National audienc

An experimentalist point of view on plasticity and nonlocality in granular materials

International audienc

MORPHO-BIOMETRIC CHARACTERIZATION OF TWO LOCAL CHICKEN BREEDS IN VIETNAM

peer reviewedIn Vietnam, 84% of the 188 million chickens are indigenous. The following local breeds are recorded: Ri, Mia, Te, Tau Vang, Ac, Oke, H’mong, Tre, Choi, Phu Lu Te, To, Dan Khao, Ho, Dong Tao and Van Phu. Mia, Ho and Dong Tao are reported as endangered or critical, while the Van Phu breed could have been lost during the last years. The phenotypes of the Mia and Ri breeds are described as quite close. The objective of this study is to characterize phenotypically Ri and Mia chickens. The morpho-biometric characterization was conducted according to the recommendation of FAO (1981). A total of 227 adults Ri (174 females and 53 males) and 53 adults Mia (18 males and 35 females) were used for the study. The following colors were observed for Ri and Mia respectively: tan (43.17% and 37.73%), gold salmon (24.23% and 26.42%), wheat (15.42% and 26.42%), dark red (9.69% and 5.66%), silver salmon (3.52% and 3.77%) and copper black (3.96% and 0%). Comb was mostly simple (91.19% and 100%) and red (100% and 100%) for both breeds. The wattles were of the same color as the comb while the color of the legs was yellow. The weights of adult males (2433.89g) and females (1752.86g) of the Mia breed were significantly higher than those of Ri (2053.02g and 1459.22g for males and females respectively). The results show that the external aspect of both breeds is not very different while body weights in the Ri breed were found lower than in the Mia breed

Experimental study of failure in a granular material

International audienc