Search results for "RICE"
showing 10 items of 2331 documents
Price Theory and US Antitrust: a Note on an Enduring Legal Doctrine
2013
Since the mid-1980s the post-Chicago approach to antitrust economics has produced a few game-theoretic models which have challenged many typical Chicago antitrust propositions. Yet, Chicago style antitrust has not yet lost its hold on u.s. antitrust. The paper suggests that the Chicago persistence within u.s. antitrust and, by the same token, the inhospitality of u.s. antitrust towards game-theoretical Industrial Organization theory owe much to the vitality of the legal doctrine according to which antitrust analysis should be consistent with traditional price theory. In particular, the paper analyzes two issues: i. the adoption of the equilibrium end-state notion of competition which is sti…
Inorganic/Organic interface in biominerals : unveiling the complex structure of two calcitic biomineral models, the red coral Corallium rubrum and th…
2022
Biominerals are organo-minerals structures produced by living systems. Since the Cambrian, they contribute to the adaptation of living organisms to different environments by fulfilling a variety of combined functions that go along with adapted morphologies. One of the aims of biomineralization is to understand how organisms "sculpt" these complex morphologies, in particular at nano and molecular scales. The aim of this PhD work was to understand the complex relationships between the organic and mineral phases. To this end, I focused my analyses on two calcitic biomineral models: 1) the red coral Corallium rubrum and 2) the prismatic shell of the Mediterranean fan mussel Pinna nobilis. My wo…
Taxonomic Identity, Geographic Distribution, and Commercial Exploitation of the Culinary-Medicinal Mushroom Pleurotus nebrodensis (Basidiomycetes)
2016
An updated overview of the outcome of studies conducted on the culinary-medicinal mushroom Pleurotus nebrodensis is presented by placing emphasis on the clarification of the taxonomic identity of P. nebrodensis and other related taxa possessing entirely white to cream basidiomes, which grow in association with different plants of the family Apiaceae. Cultivation techniques, quality of the product sold and sales price, as well as nutritional and medicinal aspects are discussed. Taking also into consideration the high economic importance of P. nebrodensis, it is essential to proceed with the verification of the commercial strains currently available in the international market under the name …
Multitemporal Monitoring of Plant Area Index in the Valencia Rice District with PocketLAI
2016
Leaf area index (LAI) is a key biophysical parameter used to determine foliage cover and crop growth in environmental studies in order to assess crop yield. Frequently, plant canopy analyzers (LAI-2000) and digital cameras for hemispherical photography (DHP) are used for indirect effective plant area index (PAI(eff)) estimates. Nevertheless, these instruments are expensive and have the disadvantages of low portability and maintenance. Recently, a smartphone app called PocketLAI was presented and tested for acquiring PAI(eff) measurements. It was used during an entire rice season for indirect PAI(eff) estimations and for deriving reference high-resolution PAI(eff) maps. Ground PAI(eff) value…
Characterisation of phenolic compounds in Algerian honeys by RP-HPLC coupled to electrospray time-of-flight mass spectrometry
2017
Abstract A total of 35 honey samples from different regions of Algeria were studied to determine their phenolic profiles. Phenolic compounds, products of the secondary metabolism of plants, were extracted with amberlite XAD-4 and analysed by liquid chromatography, with diode array detection and electrospray ionisation mass spectrometry in negative ion polarity. By using colorometric assays, Erica honeys showed the highest content of phenolic compounds and flavonoids (245 ± 54 mg GAE/100 g and 29 ± 6 mg QE/100 g, respectively). More than 30 compounds were identified in the honey samples studied including 14 phenolic acids and 16 flavonoids. In general, honey samples showed different chromato…
Genotoxicity characteristics of reverse diol-epoxides of chrysene.
2017
Trans-3,4-dihydroxy-3,4-dihydrochrysene (chrysene-3,4-diol), a major metabolite of chrysene, is further metabolized by rat liver enzymes to products which effectively revert the his- Salmonella typhimurium strain TA98 to histidine prototrophy, but are only weakly mutagenic in strain TA100 and in Chinese hamster V79 cells (acquisition of resistance to 6-thioguanine). The liver enzyme mediated mutagenicity of chrysene-3,4-diol is substantially enhanced in the presence of 1,1,1-trichloropropene 2,3-oxide, an inhibitor of microsomal epoxide hydrolase. The predominant metabolites of chrysene-3,4-diol, namely the anti- and syn-isomers of its 1,2-oxide (termed reverse diol-epoxides), proved to be …
Synthesis and mutagenicity of the diastereomeric fjord-region 11,12-dihydrodiol 13,14-epoxides of dibenzo[a,l]pyrene.
1994
Extensive tumorigenicity studies in rodents revealed that dibenzo[a,l]pyrene (DB[a,l]P) is the most potent carcinogen among all polycyclic aromatic hydrocarbons (PAHs) tested so far. The structure of the genotoxic metabolite(s) responsible for this exceptional carcinogenicity is unknown. The fjord-region syn- and anti-DB[a,l]P-11,12-dihydrodiol 13,14-epoxides (syn- and anti-DB[a,l]PDE) were synthesized to clarify their role as possible ultimate mutagenic and carcinogenic metabolites of DB[a,l]P.9-Formyl-11,12-dimethoxybenzo[g] chrysene was prepared from 9-phenanthrylacetic acid by a photochemical route. After reaction of the aldehyde with trimethylsulfonium iodide to generate an oxiranyl si…
Relationship between mutagenicity and DNA adduct formation in mammalian cells for fjord- and bay-region diol-epoxides of polycyclic aromatic hydrocar…
1991
Abstract Chinese hamster V79 cells were treated with the anti- and syn-diastereomers of the bay- or fjord-region diol-epoxides of four polycyclic aromatic hydrocarbons, namely benzo[a]pyrene (BP), benzo[c]chrysene (BcC), benzo[g]chrysene (BgC) and benzo[c]phenanthrene (BcPh). The frequency of induction of 6-thioguanine-resistant mutations was determined, and the extent of formation of DNA adducts was measured by 32P-postlabelling. When expressed as mutation frequency per nanomoles compound per millilitre incubation medium, this group of chemicals expressed a 160-fold range in potency. In agreement with previous experimental studies, the anti-diol-epoxide of BcC was highly mutagenic, inducin…
MEMORIA E PROGETTO Un modello per il Mezzogiorno che serva a tutto il Paese
2010
DALLA QUARTA DI COPERTINA DEL VOLUME: L’Italia, è stato detto di recente, è un paese senza bussola. Ha perso la memoria del suo futuro. Le manca un progetto. Persino la sua tenuta come nazione, a centocinquant’anni dalla raggiunta unità, è messa in dubbio. Occorre un progetto. Per il Sud e per tutto il Paese. A quarant’anni dalla fondazione dell’Istituto di Cibernetica del CNR a opera di Eduardo Caianiello, gli autori del libro colgono “l’occasione non solo per ricordare il passato e proporre un consuntivo dell’attività svolta, ma anche per recuperare la ‘memoria del futuro’ e costruire un progetto, alla luce delle intuizioni dello scienziato napoletano. Eduardo Caianiello è il fisico che h…
Jouer Sarah : "The Incredible Sarah"
2020
International audience; No abstract.