280 research outputs found
Le ricerche e l'insegnamento scientifico dello scolopio urbinate Alessandro Serpieri
No full textDa qualche anno in Urbino si è avviata una ricerca storico-scientifica tendente a riscoprire le origini e l'evoluzione dell'antico laboratorio di fisica della locale università, e a rivalutare l'opera del suo più illustre direttore, lo scolopio Alessandro Serpieri. Dai primi risultati dell'indagine emerge una figura notevolmente interessante e significativa nel panorama scientifico ottocentesco
Inventario del carteggio scientifico inviato allo scolopio Alessandro Serpieri
No full textAlessandro Serpieri (1823-1885) may be considered as a typical member of nineteenth-century italian scientist; although these scientists have not been much studied until now, however they were fundamental in order to promote the acquisition of technological knowledge’s for the following industrial evolution in Italy. A. Serpieri applied to astronomy, theoretical and experimental physics, meteorology and seismology furnishing interesting and original results in all these fields. We present here the list of his (known) scientific correspondents, following both chronological and analytical order; at last we list a group of letters from A. Serpieri to F. Cecchi
What is the gender motive? A comparison of the main approaches used in feminicide statistics and communication
No full textDespite the widespread use of the term “femicide”, there are no agreed guidelines to define the phenomenon. This has led to frequent statistical contradictions. In recent years, two main approaches have emerged: the broad-range one, in which victims are often defined by the mere fact that the murderer was male, while motives are only auxiliary; in the second, instead, gender motives play the main role, following middle-range theory perspective. The aim will be to provide a new set of indicators to identify victims of femicide more precisely, distinguishing them from other female murders. The use of precise indicators is not limited to the classification of victims, as it can also enable more appropriate prevention programmes and more respectful communication.No existen directrices consensuadas para definir el feminicidio. Esto ha dado lugar a frecuentes contradicciones estadísticas. Se encontraron dos enfoques principales: el de largo alcance, en el que las víctimas suelen definirse por el mero hecho de que el asesino fuera varón, mientras que los motivos son sólo auxiliares; en el segundo, en cambio, los motivos de género desempeñan el papel principal, siguiendo la perspectiva de la teoría de rango medio. El objetivo será proporcionar un nuevo conjunto de indicadores que permitan identificar con mayor precisión a las víctimas de feminicidio, distinguiéndolas de otros asesinatos. El uso de indicadores precisos no se limita a la clasificación de las víctimas, ya que también puede permitir programas de prevención más adecuados y una comunicación más respetuosa
Statistical exaggerations of femicide numbers: poor methodological practices and misinformation
No full textWhom the apostates are turning to? Former Muslims and aid groups, from the rejection of Islam to interreligious dialogue
No full textTendenze e focus tematici nella letteratura scientifica sull’esitazione/propensione vaccinale. I risultati dell’analisi del contenuto come inchiesta / Dentale, Maria; Vetrano, Alessandro; Greco, Selene; Tabegna, Desirée - (2024), pp. 302-329
No full textL’approfondimento dello spettro delle ragioni connesse alla propensione/esitazione vaccinale è al centro di numerose indagini condotte a livello nazionale ed internazionale. Tali studi pongono in risalto la complessità e multi-dimensionalità del concetto di vaccine propensity/hesitancy, chiarendo la complessa dinamica sociale che connette il comportamento pro/no vax alla specificità del sistema di ragioni/valori che orienta il corso d’azione dei singoli. Collocandosi all’interno di questo scenario e rispondendo all’obiettivo di proporre una classificazione ragionata delle principali motivazioni connesse alla scelta di vaccinarsi/non vaccinarsi contro il Covid 19, il capitolo presenta e discute i risultati ottenuti a seguito dell’analisi del contenuto come inchiesta delle fonti bibliografiche reperite sul tema. La procedura di analisi ha preso avvio da una selezione ragionata delle fonti bibliografiche (articoli, report di ricerca), ottenuta mediante una web research condotta per parole chiave sui principali motori di ricerca (Google Scholar, Web of Science...). La rassegna bibliografica ha avuto come esito la costruzione di un archivio ragionato in cui risulta incluso un cospicuo numero di contributi, ripartiti in diverse aree scientifico disciplinari (Psicologia e Medicina Sociale; ii. Sociologia della Conoscenza; iii. Sociologia Economica; iv. Sociologia della Comunicazione; v. Sociologia della Scienza; vi. Scienze Politiche; vii. Filosofia e Semiotica). Nei contributi presi in esame risultano variamente combinate informazioni connesse ai seguenti aspetti: propensione ai vaccini in generale; propensione al vaccino anti Covid; ragioni della propensione o della esitazione; fiducia nella scienza e nel sistema mediale. La discussione dei risultati restituirà un quadro molto articolato delle connessioni esistenti tra ragioni, orientamenti valoriali e pratiche sociali dei vaccinati e degli esitanti, consentendo di giungere ad una profilatura ben precisa del prospetto motivazionale che orienta/ha orientato la scelta di vaccinarsi - o meno - contro il Covid 19. D’altra parte, l’analisi consentirà di cogliere in quali direzioni si è mosso un dato comparto scientifico negli ultimi anni e su quali specifici focus ha maggiormente speso risorse e competenze
Response of Tagetes patula L. and Ageratum houstonianum Mill. to Microbial Biostimulant Inoculation and Organic Fertilization
No full textA correct cultivation technique supported by scientific evidence that leads to high-quality standards can promote sustainable floriculture. It is urgent to find alternative solutions to the widely used chemical fertilizers and evaluate the effectiveness of other fertilizers. The liquid organic ones, already in use in organic vegetable farming, could be a good substitute if supplied together with growth-promoting products such as microbial biostimulants. In the hope of replacing the traditional chemicals with more sustainable organic-based fertilization, the present investigation aimed to evaluate the effects of a microbial biostimulant and various combinations of organic and mineral
fertilization on morphological characteristics and physiological parameters of Tagetes patula L. and Ageratum houstonianum Mill. The plants were grown in pots with a substrate inoculated or not with the microbial biostimulant and were fertigated with nutrient solutions at different concentrations of
elements from mineral and/or organic sources. Six fertilization formulas were adopted: control (only water without fertilizer), 100% mineral fertilization, 50% mineral fertilization, 100% organic fertilization, 50% organic fertilization, and 50% mineral + 50% organic fertilization. For the organic fertilization, a commercial liquid fertilizer admitted in organic farming with 3-2-5.5 NPK with 3% organic nitrogen was used. Mineral fertilization was formulated to match the organic solution as closely as possible. We observed an improvement in ornamental value (stem diameter and shoot number) with the biostimulant inoculum. Generally, the 50% mineral and 50% organic fertilization did not negatively influence the morphological characteristics. The reduction by 50% in the mineral nutrients and the integration of this reduction with an organic fertilizer was feasible to produce poed plants of these species during spring in the Mediterranean area
Fertigation Management and Growth-Promoting Treatments Affect Tomato Transplant Production and Plant Growth after Transplant
No full textPlant biostimulants are of interest as they can stimulate plant growth and increase resource utilization. There is still no information on the use of plant growth-promoters under variable nutritional conditions in the nursery and the effects on tomato seedling growth and plant performance after transplant. This study aimed to evaluate the suitability of gibberellic acid (GA3) or bacterial biostimulant treatments to enhance the growth and quality of greenhouse-grown tomato (Solanum lycopersicum ‘Marmande’) seedlings, fertigated with increasing nutrient rates and to assess the efficacy of these treatments on the early growth of tomato plants. During autumn 2019, tomato seedlings were inoculated with 1.5 g L−1 of TNC BactorrS13 (a commercial biostimulant containing 1.3 × 108 CFU g−1 of Bacillus spp.) or sprayed with 10−5 M GA3 and fertigated with a nutrient solution containing 0, 1, 2 and 4 g L−1 of NPK fertilizer (20-20-20) when they reached the 11th BBCH growth stage for tomato. Subsequently, the seedlings were evaluated in greenhouse cultivation for 60 days until at least the 61st BBCH growth stage (January 2020). The growth of the tomato seedlings increased curvilinearly in relation to the fertigation rates. The GA3-treated seedlings showed similar or even higher growth parameters than the control seedlings fed with 4 g L−1 of fertilizer but with half of the nutrients. The inoculation of the substrate with Bacillus spp. had negative effects in the absence of fertigation but determined a greater growth at the highest fertigation rate. The bacterial inoculum of seedlings had longer-term effects than the GA3 treatment during the plant growth, but these effects were noticeable mainly when the bacterial biostimulant was associated with the highest fertigation rate
Alleviation of salt stress by plant growth-promoting bacteria in hydroponic leaf lettuce
No full textMediterranean areas with intensive agriculture are characterized by high salinity of groundwater. The use of this water in hydroponic cultivations can lead to nutrient solutions with an electrical conductivity that overcomes the tolerance threshold of many vegetable species. Plant growth-promoting rhizobacteria (PGPR) were shown to minimize salt stress on several vegetable crops but the studies on the application of PGPR on leafy vegetables grown in hydroponics are rather limited and have not been used under salt stress conditions. This study aimed to evaluate the use of plant growth-promoting bacteria to increase the salt tolerance of leaf lettuce grown in autumn and spring in a floating system, by adding a bacterial biostimulant (1.5 g L−1 of TNC BactorrS13 a commercial biostimulant containing 1.3 × 108 CFU g−1 of Bacillus spp.) to mineral nutrient solutions (MNS) with two salinity levels (0 and 20 mM NaCl). Leaf lettuce plants showed a significant reduction of growth and yield under salt stress, determined by the reduction of biomass, leaf number, and leaf area. Plants showed to be more tolerant to salinity in autumn than in spring. The inhibition of lettuce plant growth due to salt stress was significantly alleviated by the addition of the bacterial biostimulant to the MNS, which had a positive effect on plant growth and fresh and dry biomass accumulation of the unstressed lettuce in both cultivation seasons, and maintained this positive effect in brackish MNS, with similar or even significantly higher values of morphologic, physiologic, and yield parameters than those recorded in control unstressed plants
Le conseguenze dell’esitazione vaccinale nella vita quotidiana in un clima di crescenti contrapposizioni
No full textIl contributo mette a sistema le interviste rivolte ai soggetti esitanti o forzatamente portati alla vaccinazione, valorizzando il discorso intorno alle conseguenze, volute o inattese, della scelta di non vaccinarsi. Tra le dimensioni enucleate si evidenzia in primis un cambiamento significativo sul piano relazionale, sovente foriero di una profonda ridefinizione dei rapporti tra ingroup e outgroup. Dunque, saranno evidenziate le strategie di mutuo aiuto messe in atto dagli intervistati con l’obiettivo di fronteggiare le limitazioni vissute nella vita privata e sociale. In seguito, si propone un focus sulle conseguenze riscontrate in ambito lavorativo, passando in rassegna i molteplici episodi di esclusione e discriminazione capaci di sfociare in vere e proprie forme di ritiro dal lavoro (great resignation, quite quitting). Nella sfera intima, emerge l’esigenza di rimodulare le proprie abitudini legate a una quotidianità profondamente mutata. Ciò comporta dei margini di tensione talvolta difficili da gestire, che tendono a tradursi, nei casi più estremi, in una scelta volontaria di autoesclusione al fine di ridurre il confronto e il conflitto, sia con gli altri, sia con sé stessi. In ultima analisi, sembra lecito individuare un processo di occultamento della mancata vaccinazione, in cui gli individui sperimentano una condizione di “clandestinità dissimulata” connessa a sentimenti di timore, incomprensione e solitudine che innescano meccanismi perversi di ghettizzazione le cui conseguenze possono protrarsi a lungo, ben oltre l’epilogo della pandemia
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