109,747 research outputs found
Smith (H.) - Prospect of Political Economy.
No full textBertin Gilles. Smith (H.) - Prospect of Political Economy.. In: Revue économique, volume 21, n°2, 1970. pp. 342-344
Smith (H.) - Prospect of Political Economy.
No full textBertin Gilles. Smith (H.) - Prospect of Political Economy.. In: Revue économique, volume 21, n°2, 1970. pp. 342-344
Bourguinat (H.) - Les Marchés communs des pays en voie de développement.
No full textBertin Gilles. Bourguinat (H.) - Les Marchés communs des pays en voie de développement.. In: Revue économique, volume 21, n°1, 1970. pp. 158-159
abbaye de Saint-Bertin au XVe siècle
No full textL’abbaye de Saint-Bertin. Détail du rouleau dit de l’Aa, fin du XVe siècle. Dessin à la plume aquarellé sur un rouleau de papier (récemment marouflé sur toile), figurant le cours de la rivière Aa depuis l’abbaye de Saint-Bertin jusqu’au pont d’Ardennes (Gondardennes) à la fin du XVe siècle. H. 29,2 cm. L. 326,0 cm. Saint-Omer, Bibliothèque de l’agglomération, Ms 1489. Ce rouleau a été réalisé probablement pour servir de document de travail ou de preuve dans le cadre d’une affaire juridique. L..
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Obtainment of a microbial consortium able to perform an effective biomethanization of a mechanically-sorted Organic fraction of municipal solid waste through a semicontinuous culture enrichment procedure
No full textMethane production yields achieved through the anaerobic digestion of mechanically sorted-organic fractions of municipal solid waste (MS-OFMSW) are generally lower than those obtained with source sorted-fractions (Hartmann and Ahring, 2006), but MS-OFMSW biomethanization can be enhanced through the acclimatization of a microbial population.
An anaerobic consortium capable of efficiently converting the organic fraction of MS-OFMSW into methane was obtained through a dedicated enrichment procedure in a 0.36 L up-flow anaerobic recirculated reactor. The system was initially filled with cattle manure (2.2% VSS, 6.2 g L-1 COD), an effective co-substrate for biomethanization of MS-OFMSW (Bertin et al., 2008); after a short batch working period, it was fed with MS-OFMSW according to a semi-continuous scheme, i.e. through successive short-time batch processes. In particular, at the beginning of each 56 hours batch cycle, 11mL of the processed waste were collected from the reactor, an equal volume of the waste (2.1% w/w VSS, 57.5 g L-1 COD) was then added by replacing part of the manure with MS-OFMSW which after 5 months theoretically constituted more than 99% of the reaction volume. The COD measured at the end of each period slowly decreased from 7.1 to 4.4 g L-1 and more than 90% of the overall COD fed during the experiment was depleted. Methanogenesis yield gradually increased up to 0.35 L g-1 depleted COD throughout the process. Molecular analysis of the microbial consortium indicated that while Archeal population was unaffected by sequencing fed-batch enrichment on MS-OFMSW, several hydrolytic and acidogenic Firmicutes and Bacteroidetes were enriched concomitantly to the observed increase of the biomethanization. The abovementioned bacterial species are probably essential for the effective biomethanization of MS-OFMSW carried out by the acclimated microbial community obtained in this study.
Hartmann H. and Ahring B.K. (2006). Wat. Sci. Technol. 53(8):7-22.
Bertin et al. (2008). Wat. Sci. Technol. 58(9):1735-174
Obtainment of a microbial consortium able to perform an effective biomethanization of a mechanically-sorted Organic fraction of municipal solid waste through a semicontinuous culture enrichment procedure
No full textMethane production yields achieved through the anaerobic digestion of mechanically sorted-organic fractions of municipal solid waste (MS-OFMSW) are generally lower than those obtained with source sorted-fractions (Hartmann and Ahring, 2006), but MS-OFMSW biomethanization can be enhanced through the acclimatization of a microbial population.
An anaerobic consortium capable of efficiently converting the organic fraction of MS-OFMSW into methane was obtained through a dedicated enrichment procedure in a 0.36 L up-flow anaerobic recirculated reactor. The system was initially filled with cattle manure (2.2% VSS, 6.2 g L-1 COD), an effective co-substrate for biomethanization of MS-OFMSW (Bertin et al., 2008); after a short batch working period, it was fed with MS-OFMSW according to a semi-continuous scheme, i.e. through successive short-time batch processes. In particular, at the beginning of each 56 hours batch cycle, 11mL of the processed waste were collected from the reactor, an equal volume of the waste (2.1% w/w VSS, 57.5 g L-1 COD) was then added by replacing part of the manure with MS-OFMSW which after 5 months theoretically constituted more than 99% of the reaction volume. The COD measured at the end of each period slowly decreased from 7.1 to 4.4 g L-1 and more than 90% of the overall COD fed during the experiment was depleted. Methanogenesis yield gradually increased up to 0.35 L g-1 depleted COD throughout the process. Molecular analysis of the microbial consortium indicated that while Archeal population was unaffected by sequencing fed-batch enrichment on MS-OFMSW, several hydrolytic and acidogenic Firmicutes and Bacteroidetes were enriched concomitantly to the observed increase of the biomethanization. The abovementioned bacterial species are probably essential for the effective biomethanization of MS-OFMSW carried out by the acclimated microbial community obtained in this study.
Hartmann H. and Ahring B.K. (2006). Wat. Sci. Technol. 53(8):7-22.
Bertin et al. (2008). Wat. Sci. Technol. 58(9):1735-174
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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