188,075 research outputs found
Allozyme variation in reference and metal-exposed natural populations of Orchesella cincta (L.) (Insecta, Collembola)
No full textEnvironmental pollution may affect genetic variation in populations inhabiting polluted sites. In this study, allozyme variation was studied in natural populations of the soil-dwelling insect Orchesella cincta. The populations originated from eight sites with different histories of metal contamination and natural enrichment in The Netherlands, Belgium and F.R.G. Slight but significant divergence was observed for four polymorphic loci; 18 loci were monomorphic at all sites. The highest mean values for heterozygosity (H), degree of polymorphism (P) and mean number of alleles per locus (A) were 0.090, 0.182 and 1.36, respectively. Geographic distance was not correlated to genetic divergence. Comparison of allozyme data from investigated populations and from a reference population in Italy showed a remarkable genetic homogeneity in this species, the highest value for Nei's genetic distance (D) being 0.035. Among NW European populations, a correlation between metal tolerance characteristics and allozyme frequencies was observed for glutamate-oxaloacetate transaminase (EC. 2.6.1.1)
Chromosome elimination and sex determination in springtails (Insecta, Collembola)
No full textA post-zygotic mechanism of sex determination is described in the two symphypleonans Dicyrtomina ornata (Nicolet) and Ptenothrix italica Dallai. The process consists of the loss of two sex chromosomes from the male embryo. At the end of the first meiotic division of spermatogenesis, a second chromosome elimination occurs, allowing half the secondary spermatocytes, later transformed into spermatids, to receive a complete haploid set of chromosomes. The secondary spermatocytes, which receive an incomplete set of chromosomes, degenerate. Males of the two collembolan species, therefore, produce a reduced number (50%) of spermatozoa. Females of D. ornata have 2n = 12 and males 2n = 10 chromosomes; females of P. italica have 2n = 14 and males 2n = 12 chromosomes. In both species, oogenesis proceeds normally and chromosomes pair and form chiasmata in meiotic prophase. The adaptive significance of this post-zygotic mechanism of sex determination is discussed. The mechanism seems to be a characteristic feature of the suborder Symphypleona. The neanurid Arthropleona Anurida maritima (Guérin), which was studied for comparative analysis, has 2n = 8 chromosomes and normal spermatogenesis producing haploid nuclei with four chromosomes
Regola dichiarazioni pontificie e costituzioni generali dei frati minori
No full textREGOLA DICHIARAZIONI PONTIFICIE E COSTITUZIONI GENERALI DEI FRATI MINORI
Regola dichiarazioni pontificie e costituzioni generali dei frati minori ( - )
Title page ( - )
Table of contents ( - )
[Testamento del S. P. S. Francesco - Beginnt auf Seite 14, Seite 1 - 16 sind gebunden nach Seite 32] (17)
[Benedizione, Exortazione, Maledizione] (19)
[I. Exiit Qui Seminat] Dichiarazioni Pontificie - Dichiarazione Di Nicolò III (Exiit) Sopra La Regola Dei Frati Minori [hier nur S. 21 - 32, Seite 33 - 67 sind gebunden hinter S. 16] ( - )
Regola dei Frati Minori -Bolla Di Papa Onorio III Sopra La Regola Dei Frati Minori [= 1. Kapitel mit den Seiten 1 - 13, gebunden nach Seite 32] ( - )
Testamento Del N. P. S. Francesco [hier Beginn des 2. Kapitels, Seite 14 - 16, gebunden vor Seite 33] (14)
[Seite 33 - 67 = Forts. von Dichiarazione di Nicolò III] (33)
[II - Exivi De Paradiso] Dichiarazione Di Clemente V (Exivi) Sopar La Regola dei Frati Minori (68)
[III 3 - SollicitudoPastoralis Officii] (98)
Costituzione Del Papa Innocenzo XI (Sollicitudo) Intorno All' Osservanza Dei Precetti Della Regola Dei Frati Minori (98)
Costituzioni Generali Dell'Ordine Dei Frati Minori (109)
Capo I. (109)
Capo II. (114)
Capo III. (158)
Capo IV. (178)
Capo V. (182)
Capo VI. (195)
Capo VII. (215)
Capo VIII. (231)
Capo IX. (292)
Capo X. (297)
Capo XI. (308)
Capo XII. (312)
Index ( -
Mario Monicelli's Grande Guerra: the right of living and the choice of dying
No full textMonicelli's suicide has reawakened a political and legal dispute about the medical role in end-of-life decisions, allowing us to discuss medical, ethical, legal, religious and political debate in various paradigmatic conscious and unconscious cases of end-of-life decision. We analyse the uncertainty about the 'a priori' choice between different specific legislative systems, highlighting the need for a unifying model, dictated by the existing trust in the critical relationship between patient and doctor, whose primary mission should be not only 'to cure' but also 'to care'.Monicelli's suicide has reawakened a political and legal dispute about the medical role in end-of-life decisions, allowing us to discuss medical, ethical, legal, religious and political debate in various paradigmatic conscious and unconscious cases of end-of-life decision. We analyse the uncertainty about the ‘a priori’ choice between different specific legislative systems, highlighting the need for a unifying model, dictated by the existing trust in the critical relationship between patient and doctor, whose primary mission should be not only ‘to cure’ but also ‘to care’
Linee- guida: a double edged sword. Riflessioni medico-legali sulle esperienze statunitensi
No full textIl danno risarcibile: unus vel plures?
No full textSono stati affrontati nelle varie sezioni diverse tematiche di interesse medico legale focalizzandosi sulle novità circa la valutazione del danno biologico, l'analisi del fenomeno del femminicidio e i più recenti aggiornamenti giurisprudenziali in tema di infezioni correlate all'assistenza ospedaliera e alla responsabilità medic
Fecondazione artificiale eterologa e disconoscimento di paternità. Commento a Cass. Civ., Sez. I, 26 febbraio-16 marzo 1999.
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