Academic literature on the topic 'Magnets, juvenile literature'

The Buff-banded Rail Gallirallus philippensis is not uncommon in favourable parts of its range but its elusive nature makes it difficult to study and, in particular, development of chicks to attainment of juvenile plumage and adult size is incompletely reported. In the northern suburbs of Canberra, Australian Capital Territory, planned storm-water management has resulted in the formation of wetlands, watercourses and pools, an ideal environment for rails and crakes. Physical and behavioural development could therefore be followed from opportunistic observations and photography of three broods of chicks, from black downy hatchlings to fully fledged juveniles, at Forde Creek in 2014–2015. The first feathers were visible on the fourth day. All the down had been replaced withfeathers by around the third week, by which time the juveniles were about half the size of the adults. The juvenile Rails took another 3 weeks to fully develop the distinctive juvenile plumage patterning, similar to but duller than in adults, and by this time they were the same size as the adults. Although the rate of plumage development is broadly consistent with the literature, the growth rate was slower than the widely quoted figure of adult size being reached in 3 weeks. Observations over 107 days in summer 2014–autumn 2015 provided an opportunity to observe the behaviour of dependent chicks and adults as the chicks developed into juveniles and gained independence.

Background: The prevalence of Angiofibroma of juvenile variety is infrequent tumor of nasopharynx7. It grows aggressively and is locally destructive and extends into the cranium as well. Its symptoms usually involve nasal obstruction with or without nasal bleed. Aims: To compare two methods i.e 1. Carotid artery ligation per operatively and embolization of feeding artery pre operatively in order to assess which method is better in controlling per operative bleeding during its excision. Design: Comparative study Study setting: The study was conducted in the Department of Otorhinolaryngology of Jinnah Hospital, Lahore. The duration of the study is from 01st January 2020 to 31st January 2022. Methodology: A group 20 patients were taken having angiofibroma. 10 patients went for pre operative embolization of the feeding vessel of the angiofibroma after localizing the vessel by having MRA. The other 10 patients had their external carotid artery ligated before excising the angiofibroma. The bleeding which occurred during both procedures was quantified by weighing the gauze pieces soaked per operatively, the blood collected in suction bottle and then comparing the values. Results: Ten patients who had embolization had far more bleeding during excision as compared to the 10 patients who had their external carotid artery ligated per operatively before excision. Conclusion: Results showed that pre operative embolization is not a better procedure to control per op bleeding as compared to external carotid artery ligation during angiofibroma excision. Keywords: Embolization, angiofibroma, per operative ,

Background: The prevalence of Angiofibroma of juvenile variety is infrequent tumor of nasopharynx7. It grows aggressively and is locally destructive and extends into the cranium as well. Its symptoms usually involve nasal obstruction with or without nasal bleed. Histopathology shows spindle cells scattered between collagen fibers and vascular tissue. MRI and CT angiogram are the two most important investigations used in its diagnosis. Many methods have been used for its excision since ancient times and many researches have been done to control per operative bleeding as it is a vascular tumor. Aim: This study was performed to compare two methods i.e., 1. Carotid artery ligation per operatively and 2. Embolization of the feeding artery pre operatively in order to assess which method is better in controlling per operative bleeding during its excision. Design: Comparative Setting & duration: Department of Otorhinolaryngology, Jinnah Hospital, Lahore from 01st January 2020 to 31st January 2022. Methodology: A group 20 patients were taken having angiofibroma. 10 patients went for pre operative embolization of the feeding vessel of the angiofibroma after localizing the vessel by having MRA. The other 10 patients had their external carotid artery ligated before excising the angiofibroma. The bleeding which occurred during both procedures was quantified by weighing the gauze pieces soaked per operatively , the blood collected in suction bottle and then comparing the values. Results: The 10 patients who had embolization had far more bleeding during excision as compared to the 10 patients who had their external carotid artery ligated per operatively before excision. Conclusion: Results showed that pre operative embolization is not a better procedure to control per op bleeding as compared to external carotid artery ligation during angiofibroma excision. Keywords: Embolization , angiofibroma , per operative ,