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Search Results: 1 - 10 of 9018 matches for " Gardin Silvia "
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Stage boundaries, global stratigraphy, and the time scale: towards a simplification
Odin Gilles Serge,Gardin Silvia,Robaszynski Francis,Thierry Jacques
Carnets de Géologie , 2004,
Abstract: This paper examines four facets of stratigraphic terminology and usage considered faulty and proposes corrective measures. The four perfectible areas are: (1) The system of dual nomenclature requiring discrete terminologies for the superpositional and temporal aspects of rock units. (2) The premise that a GSSP establishes the base of a stage as being coincident with the top of the preceding stage rather than simply defining it as the boundary between stages. (3) The rejection of supplementary (auxiliary) sections that would broaden the knowledge of a GSSP and enlarge the area in which it is easily usable. (4) The current dual system of nomenclature for Precambrian and Phanerozoic strata is accepted, but a third system is proposed for strata formed in the last 3 to 5 Ma. In addition, the paper advocates a broader use of a limited number of conventions but warns against their proliferation; units shortened thereby would be more difficult to recognize. It points out the clear distinction between these conventions - a matter of administration and general compliance - and knowledge - a domain where free expression of opinion is indispensable -.
Guidebook for the post-congress fieldtrip in the Vocontian Basin, SE France (September 11-13, 2008).- 12th Meeting of the International Nannoplankton Association (Lyon, September 7-10, 2008)
Mattioli Emanuela,Gardin Silvia,Giraud Fabienne,Olivero Davide
Carnets de Géologie , 2008,
Abstract: Chapter 1. The Aalenian-Bajocian (Middle Jurassic) of the Digne area Chapter 2. The Global Boundary Stratotype Sections and Points (GSSP) of the Hauterivian: La Charce section (Dr me, France, Vocontian Basin) Chapter 3. The nannofossil succession of la Charce across the Valanginian-Hauterivian boundary Chapter 4. The OAE 1d (Oceanic Anoxic Event, latest Albian) Chapter 5. The GSSP (Global boundary Stratotype Section and Point) for the base of the Cenomanian stage (Kennedy et alii, 2004) Chapter 6. The Cenozoic of the Barrême syncline.
Linking Climate Variables with Tuber borchii Sporocarps Production  [PDF]
Elena Salerni, Claudia Perini, Lorenzo Gardin
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.58038
Abstract:
Tuber borchii is an ectomycorrhizal edible truffle, commonly called “bianchetto” (whitish truffle) to distinguish it from the more valuable white truffle found in Italy (T. magnatum). Although Tuber borchii also has a fairly high commercial value, information on its ecology, and especially its optimum rainfall and temperature values are lacking. In recent years the issue of climate change has steadily grown in importance, not only in the scientific world, but also politically and in civil society. Over the last century there has been a general increase in the temperature in Italy of about 1°C. Several studies have underlined how climatic changes influence the optimum growth and distribution of various species of truffle. This contribution aims to illustrate the fluctuation of T. borchii sporocarps production in different timescales and show how these alterations are driven by rainfall and temperature factors. The research, carried out in five different natural T. borchii production areas, reveals that the production of truffles is significantly higher after autumn months characterized by abundant rainfall and cold temperatures.
La formalisation du discours savant La formalisation du discours savant
Jean-Claude Gardin
DIGITHUM , 1999,
Abstract: Les sciences de I’homme sont-elles en crise? Beaucoup l’affirment, périodiquement, au fil des décennies. Je n’ai quant á moi aucune opinion tranchée sur ce point: mon domaine de recherche se limitant á l’archéologie, je ne me sens guére armé pour traiter une question aussi vaste. Imaginons cependant qu’on la pose pour cette seule discipline: l’archéologie est-elle en crise? Je répondrais avec vigueur par la négative.
Effectiveness of the GAEC standard of cross compliance retain terraces on soil erosion control
Paolo Bazzoffi,Lorenzo Gardin
Italian Journal of Agronomy , 2011, DOI: 10.4081/ija.2011.6.s1.e6
Abstract: The GAEC standard retain terraces of cross compliance prohibits farmers the elimination of existing terraces, with the aim to ensure the protection of soil from erosion. In the Italian literature there are not field studies to quantify the effects of the elimination or degradation of terraces on soil erosion. Therefore, the modeling approach was chosen and applied in a scenario analysis to evaluate increasing levels of degradation of stone wall terraces. The study was conducted on two sample areas: Lamole (700.8 ha, Tuscany) and Costaviola (764.73 ha, Calabria) with contrasting landscapes. The Universal Soil Loss Equation model (USLE) was applied in the comparative assessment of the soil erosion risk (Mg . ha-1 . yr-1), by simulating five increasing intensity of terrace degradation, respectively: conserved partially damaged, very damaged, partially removed, removed, each of which corresponding to different values of the indexes of verification in case of infringement to GAEC standard provided for by the AGEA rules which have come into force since December 2009 (Agency for Agricultural Payments). To growing intensity of degradation, a progressive loss of efficacy of terraces was attributed by increasing the values of the LS factor (length and slope) of USLE in relation with the local modification of the length and steepness of the slope between adjacent terraces. Basically, it was simulated the gradual return to the natural morphology of the slope. The results of the analysis showed a significant increase in erosion in relationship with increasing degradation of terraces. Furthermore, it is possible to conclude that the GAEC standard retain terraces is very effective with regard to the primary objective of reducing erosion. A further statistical analysis was performed to test the protective value of terraces against soil erosion in areas where agriculture was abandoned. The analysis was carried out by comparing the specific risk of erosion (Mg . ha-1 . yr-1) of polygons with land uses: forest and abandoned, with natural vegetation in evolution. In both areas, forest on totally degraded terraces is able to decrease erosion well below the tolerance threshold of 11.2 Mg . ha-1 . yr-1, in the same manner as conserved terraces do for other soil uses. At Lamole, the natural vegetation in evolution on completely degraded terraces is able to decrease erosion below the tolerance threshold. On the contrary, at Costaviola on the same soil use and level of terrace degradation, soil erosion remained above the tolerance threshold. This difference can be explained by c
Restaurantes self-service: seguran?a e qualidade sanitária dos alimentos servidos
Alves, Mariana Gardin;Ueno, Mariko;
Revista de Nutri??o , 2010, DOI: 10.1590/S1415-52732010000400008
Abstract: objective: this work aimed to assess the temperature and sanitary quality of the foods available on the buffet table of self-service restaurants located in the city of taubaté (sp), in order to discuss food safety. methods: four samples, two of cold dishes and two of hot dishes, were collected from each of 16 restaurants. the temperature of the foods on the buffet table was measured before the sample was taken. the following parameters were investigated for each sample: aerobic mesophilic bacteria count, determination of coliforms at 35oc and 45oc, coagulase-positive staphylococcus count and presence of salmonella. results: the temperature of 56 (87.5%) foods was inadequate: cold dishes were kept above 10oc and hot dishes were kept below 60oc. aerobic mesophilic bacteria counts above 106 cfu/g were detected in 11% of the samples, coliforms at 35oc in 76.6% and coliforms at 45oc in 43.7%. two foods, one cold and one hot, both from the same restaurant, had a coagulase-positive staphylococcus count above 104 cfu/g. salmonella was not found in any of the samples. conclusion: keeping the foods available on buffet tables under incorrect temperatures and a high count of microorganisms that indicate poor sanitary quality of the food can compromise safety and jeopardize the customer's health. the instruments used in this study proved to be important tools for assessing food safety.
Productivity of maize and enzymes activity carbohydrate metabolism with foliar fertilizers containing water shale
Jo?o Peterson Pereira Gardin et al.
Evidência : Ciência e Biotecnologia - Interdisciplinar , 2011,
Abstract: Brazilian agriculture has sought new supplies and materials to ensure the sustainability and sovereignty of the country. Thus, there is also interest in the search for appropriate fertilizers to different production systems. The water shale (AX) constitutes one of the products of industrial processing of shale, sedimentary rock of Permian age, with features to meet this demand. Thus, in order to evaluate the efficiency of use of such product on the grain yield of corn and enzyme activity, an experiment was conducted with application of foliar fertilizers based on AX and combined with various nutrients.The experimental design was randomized blocks with four replications. The treatments were: 1) control (without fertilization leaf), 2) AX + micronutrients, 3) and commercial foliar fertilizer 4) AX. The starch content in corn kernels wereshown to be influenced by foliar fertilization performed. From a physiological standpoint, the highest grain yield seems tobe associated with the synthesis and accumulation of starch and the activity of sucrose synthase (SuSy).
In Vitro Propagation of Grapevine Cultivars with Potential for South of Brazil  [PDF]
Jean Carlos Bettoni, Murilo Dalla Costa, Jo?o Peterson Pereira Gardin, Aike Anneliese Kretzchmar, Juliana Aparecida Souza
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.611181
Abstract: The micropropation is an important biotechnological tool for obtaining and maintaining mother vine plants with high quality plant health. The objective was to evaluate the establishment and multiplication in vitro and ex vitro acclimatization of grape genotypes with potential for Southern Brazil. Vine nodal segments were cultured in five culture medium formulations without adding growth regulators. It was evaluated the number of leaves and roots, length of roots and shoots, replication rate, relative chlorophyll index, percentage of regenerated and rooted plants, dry biomass of shoot, root and total plants grown in vitro and after acclimatization. In vitro propagation of IAC 571-6 rootstock and cv. Poloskei Muskotaly through nodal segments provided high rates of regeneration and rooting. High survival rates were obtained in the acclimatization of IAC 571-6 and P?l?skei Muskotaly. Considering all the variables, the culture medium Roubelakis showed the best growth rates and development for shoots and roots, and in vitro multiplication rate for IAC 571-6 and Poloskei Muskotaly grape varieties.
Allogeneic hematopoietic stem cell transplantation for primary myelodysplastic syndrome
Medeiros, Carlos R.;Gardin, Nilo E.;Pasquini, Ricardo;
Revista Brasileira de Hematologia e Hemoterapia , 2004, DOI: 10.1590/S1516-84842004000200002
Abstract: characteristics and outcomes of 52 patients with myelodysplastic syndrome (mds) who underwent allogeneic hematopoietic stem cell transplantation (allo-hsct) were analyzed. median age was 30 years (range 2-61 years) and median time from diagnosis to allo-hsct was 10 months (range 1-161 months). thirty-six patients had advanced mds or acute myeloid leukemia following mds at transplant. conditioning with busulfan and cyclophosphamide was administered to 73% of patients, and the median value of graft dose was 2.595 x 108 of total nucleated cells/kg. overall survival and disease free survival at 4 years were 36% and 33%, respectively. nineteen patients were alive, with a median follow-up of 3.8 years. twelve patients relapsed and only one is alive, after donor lymphocyte infusion. interval < 6 months between diagnosis and allo-hsct decreased relapse (p = 0.01). mortality and relapse were significantly lower among patients with less advanced disease (p = 0.03). decreased mortality was also observed when transplant occurred after 1994, probably because more patients with less advanced disease received the procedure. acute gvhd grades > ii occurred in 19 patients. donor type (identical related versus non-related/partially matched related) influenced the incidence of acute gvhd (p = 0.03). eleven patients developed chronic gvhd and previous acute gvhd was a risk factor (p = 0.03). thirty-three patients died, 22 (67%) secondary to transplant-related complications. patients with mds should undergo allo-hsct earlier, mainly if they have a compatible donor and are young.
Hyperpigmented Lesions In Hansen′s Disease
Singh Shri Nath,Gardin Homyar Keki,Bhattamishra Asit Baran
Indian Journal of Dermatology , 1999,
Abstract: Three patients of Hansen′s disease, presenting with hyperpigmented macules, instead of the usual hypopigmented of erythematous lesions, are reported.
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