Showing papers by "University College Cork published in 1972"

Endocrine profiles in premenstrual tension.

Abstract: SUMMARY Studies on pituitary and ovarian function as assessed by the urinary output of total gonadotrophic activity, the three classical oestrogens, pregnanediol and, in some cases, testosterone and epitestosterone, were conducted in eight patients suffering from premenstrual tension. Major abnormalities in endocrine function were not a feature of the condition. Ovulation, as judged by pregnanediol assays, was absent in seven out of the fifteen cycles investigated. Contrary to traditional belief, the symptoms of premenstrual tension could exist in the presence of cycles with anovulatory hormonal patterns.

A pharmacological analysis of the response of dog anterior mesenteric vein to transmural electrical stimulation.

Abstract: MONITORING the perfusing pressure, with constant flow perfusion, and isometric recording of longitudinal tension, the responses of the circular and longitudinal muscle in the wall of the dog anterior mesenteric vein to transmural electrical stimulation were recorded simultaneously. It was concluded from the results with tetrodotoxin and the local anaesthetic agents, cocaine and lignocaine, that the contractions were due to the excitation of nerves. The findings with alpha blocking agents, reserpine, guanethidine, hexamethonium and atropine, suggest that these nerves are post-ganglionic sympathetic noradrenergic fibres. This preparation may be a useful model for further studies on the innervation of venous smooth muscle.

Shoot zone uptake of soil-applied herbicides in pisum sativum l.

Abstract: Summary. The effects of localized herbicide placement at different internodes of pea (Pisum sativum L. cv. Alaska) shoots below the soil surface after plant emergence were studied by removing the soil from around the shoots and replacing with herbicide-treated soil. The first internode proved insensitive to linuron, diuron, atrazine and simazine at 4·5 kg/ha, while treatment of the second and third internodes markedly reduced plant growth 4–6 days after treatment. Separate exposure of the first internode alone, and the second and part of the third together to 14C-labelled atrazine indicated no difference in herbicide metabolism. However, a two- to threefold increase in 14C uptake and movement to the foliar parts occurred when the second and part of the third internode was treated, as compared to first internode treatment. Thus the differential sensitivity of the internodes to atrazine, and possibly to the other herbicides, may be because the more mature first internode allows less uptake and subsequent movement to the foliar parts. Absorption dans la zone des tiges des herbicides appliques dans le sol chez Pisum sativum L. Resume. Les effets d'un traitement herbicide localise sur differents internoeuds des tiges du pois (Pisum sativum L. cv. Alaska) pres de la surface du sol, aprees la levee des plantes, ont eteetudiee en retirant la terre autour des tiges et en la remplacAant par de la terre traitee avec un herbicide. Le premier internoeud se montra insensible au linuron, au diuron, a l'atrazine et a la simazine a 4,5 kg/ha, alors que le traitement du second et du troisieme internoeuds reduisit de facon marquee la croissance de la plante 4 a 6 jours apres le traitement. Un traitement separe du premier internoeud seul, et du second et du troisieme ensemble a l'atrazine marquee au 14C ne montra pas de difference dans le metabolisme de l'herbicide. Toutefois, une absorption deux a trois fois plus forte du 14C et une migration vers les parties foliaires se manifesterent quand le second internoeud et une partie du troisieme furent traites, par rapport au traitement du premier internoeud. Ainsi la difference de sensibility des internoeuds a l'atrazine, et eventuellement aux autres herbicides, peut etre due au fait que le premier internoeud, plus mur, ne permet qu'une absorption moindre et par suite une plus faible migration vers les parties foliaires. Aufnahme von boden-applizierten Herbiziden durch die Sprosszone bei Pisum sativum L. Zusammenfassung. Es wurde die Wirkung der Herbizidplazierung an den verschiedenen Internodien von Erbsensprossen (Pisum sativum L. cv. Alaska) unterhalb der Bodenoberflache nach dem Auflaufen der Pflanzen untersucht. Hierzu wurde die Erde um die Sprosse entfernt und durch herbizidbehandelte ersetzt. Das erste Internodium war gegenuber 4,5 kg/ha Linuron, Diuron, Atrazin und Simazin unempfindlich, wahrend die Behandlung des zweiten und dritten Internodiums nach 4–6 Tagen nach Applikation eine deutliche Verminderung des Wachstums zur Folge hatte. Wenn das erste Internodium alleine und das zweite und Teile des dritten Internodiums zusammen 14C markiertem Atrazin ausgesetzt waren, konnten keine Unterschiede im Herbizidmetabolismus festgestellt werden. Durch Behandlung des zweiten und Teile des dritten Internodiums, wurde, verglichen mit der Behandlung des ersten Internodiums, eine zweibis dreifache Zunahme der 14C-Aufnahme und Transport zu den Blattern festgestellt. Die unterschiedliche Empfindlichkeit der Internodien gegenuber Atrazin und moglicherweise auch anderer Herbizide, durfte darauf zuruckzufuhren sein, dass das ausgereifte erste Intemodium eine geringere Aufnahme und Transport in die Blatter zulasst.

Clothes and the man: an aspect of Benito Pérez Galdós' method of literary characterization

Abstract: There are numerous references to clothes in Galdos' novels, both as a means of characterization through description of external appearances and as a social phenomenon of the historical period in which the author lived. More often than not, Galdos' references to clothes worn by a particular character combine these two functions, as, for instance, in the case of Rosalia Bringas, whose passion for ostentatious forms of dress leads eventually to her downfall. While her attitude to clothes draws attention to a basic weakness in her character, at the same time this individual preoccupation with external appearances also helps to reveal a widespread social vice of the time. In a later novel, Fortunata y Jacinta, Galdos makes a more explicit comment on the social function of clothing, summing up his vision of contemporary society with a combination of serious comment and wry irony.