1,720,981 research outputs found
A new pathogen of Safflower (Carthamus tinctorius L.) in Italy: Pseudomonas syringae van Hall
No full textGravi epifizie di Leveillula taurica (Lév.) Arn. su babaco (Carica pentagona Heilb.) in coltura protetta in Sardegna.
No full textPossibilità di risanamento del carciofo da infezioni virali mediante coltura in vitro di apici meristematici.
No full textPRODUCTION OF VIRUS-FREE ARTICHOKE (CYNARA SCOLYMUS L.) BY MERISTEM-TIP CULTURE.
All the "Spinoso sardo" artichoke plants growing in Sardinia are infected by a latent potyvirus. In order to produce virus-free material the meristem-tip culture has been experimented. Several nutrient media have been tested. The best results were obtained from an integration of the Pierik's medium.
By biological and serological tests it resulted that more than 80% of the produced plants were virus-free
Valutazione dell'efficacia del metodo della “diluizione in piastra” (SDP) nella determinazione quantitativa delle popolazioni di Phytophthora cryptogea Peth. et Laff. nel terreno.
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Influenza di fattori climatici e biologici sulle popolazioni di Agrobacterium spp. presenti nel terreno in ambiente protetto
No full textInfluenza di alcuni fattori ambientali sulla sopravvivenza e diffusione nel terreno di Fusarium spp. in serra
No full textInfezioni precoci di Sclerotinia sclerotiorum (Lib.) de Bary su colza (Brassica napus L. var. oleifera DC.) in Sardegna
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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