Mostrar mensagens com a etiqueta Man and birds .O homem e as aves . Lo Hombre y los pajaros.. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta Man and birds .O homem e as aves . Lo Hombre y los pajaros.. Mostrar todas as mensagens

27 de agosto de 2011

Fuga radioativa em Fukushima equivale a 168 bombas Hiroshima



A agência nuclear japonesa afirmou que a quantidade de césio radioativo libertada pela central de Fukushima, destruída em Março passado, é equivalente ao que seria emitido se explodissem 168 bombas atómicas iguais àquelas que destruíram Hiroshima.

A Agência Nuclear e de Segurança Industrial japonesa afirmou que esta estimativa, hoje divulgada oficialmente, foi pedida por um comité parlamentar.
Os peritos realçaram, no entanto, não ser possível comparar uma explosão momentânea de uma bomba e uma perda contínua, como aquela que foi registada nos reatores da central de Fukushima.
Segundo o jornal Tokyo Shimbun, que avançou na quinta-feira alguns pormenores das estimativas governamentais, os reatores de Fukushima, fortemente danificados por um sismo e um tsunami em março passado, libertaram até agora 15.000 terabecquerels de césio 137.
Em agosto de 1945, no final da II Guerra Mundial, a bomba atómica lançada pelo exército norte-americano sobre a cidade japonesa de Hiroshima libertou instantaneamente na atmosfera 89 terabecquerels deste isótopo, cujo período radioativo é de 30 anos, acrescentou o mesmo jornal.
"Em teoria, a quantidade de césio 137 libertado pela central de Fukushima é, portanto, 168,5 vezes superior”, referiu ainda o jornal, citando o relatório.
Diário Digital / Lusa

19 de agosto de 2009

Pulmões das aves



The avian respiratory system delivers oxygen from the air to the tissues and also removes carbon dioxide. In addition, the respiratory system plays an important role in thermoregulation (maintaining normal body temperature). The avian respiratory system is different from that of other vertebrates, with birds having relatively small lungs plus nine air sacs that play an important role in respiration (but are not directly involved in the exchange of gases).
The air sacs permit a unidirectional flow of air through the lungs. Unidirectional flow means that air moving through bird lungs is largely 'fresh' air & has a higher oxygen content. In contrast, air flow is 'bidirectional' in mammals, moving back & forth into & out of the lungs. As a result, air coming into a mammal's lungs is mixed with 'old' air (air that has been in the lungs for a while) & this 'mixed air' has less oxygen. So, in bird lungs, more oxygen is available to diffuse into the blood .
The avian respiratory system is partitioned heterogeneously, so the functions of ventilation and gas exchange are separate in the air sacs (shaded in gray) and the parabronchial lung, respectively. Air sacs act as bellows to ventilate the tube-like parabronchi (Powell and Hopkins 2004)

Pulmões do ser humano


Los pulmones están situados dentro de la caja torácica, protegidos por las costillas y a ambos lados del corazón. Son huecos y están cubiertos por una doble membrana lubricada (serosa) llamada pleura. Están separados el uno del otro por el mediastino.
La
pleura es una membrana de tejido conjuntivo, elástica que evita que los pulmones rocen directamente con la pared interna de la caja torácica. Posee dos capas, la pleura parietal o externa que recubre y se adhiere al diafragma y a la parte interior de la caja torácica, y la pleura visceral que recubre el exterior de los pulmones, introduciéndose en sus lóbulos a través de las cisuras.
Entre ambas capas existe una pequeña cantidad (unos 15 cc) de líquido lubricante denominado líquido pleural.
La superficie de los pulmones es de color rosado en los niños y con zonas oscuras distribuidas irregularmente pero con cierta uniformidad en los adultos.
Esto es denominado antracosis y aparece con carácter patológico, mostrándose casi en la totalidad de los habitantes de ciudades, como resultado de la inhalación de polvo flotante en la atmósfera que se respira, principalmente carbón.

17 de agosto de 2009

RAP

Rapping (also known as emceeing, MCing, spitting (bars), or just rhyming) is the rhythmic spoken delivery of rhymes, wordplay, and poetry. Rapping is a primary ingredient in hip hop music, but the phenomenon predates hip hop culture by centuries. Rapping can be delivered over a beat or without accompaniment. Stylistically, rap occupies a gray area among speech, prose, poetry, and song. The use of the word to describe quick speech or repartee long predates the musical form,meaning originally "to hit". The word had been used in British English since the 16th century, and specifically meaning "to say" since the 18th. It was part of the African American dialect of English in the 1960s meaning "to converse", and very soon after that in its present usage as a term denoting the musical style.Today, the terms "rap" and "rapping" are so closely associated with hip hop music that many use the terms interchangeably. For purposes of clarity, this article focuses on rapping as a technique or activity.

11 de agosto de 2009




As viagens de pequeno falcão
identidade: A banda chama-se
bueno.sair.es desde Janeiro de 2008, há 7 anos atrás. O propósito é a procura da canção perfeita num paradigma fechado em 2 baixos, sintetizadores e uma bateria com bombo e tarola.

Flutuando surge do pó resultante da queda dos impérios coloniais ibéricos, emergindo com a ascensão do universo latino no séc. XXI...a magia da decadência vista de Marte.

22 de junho de 2009

Stonebones & Bad Spaghetti



05 Jul 2009, 20:00 08:00 PM - Toca & Segue 2009
Parque Mercado Municipal Rio de Mouro, Rio de Mouro,
Entrada Livre
Stonebones & Bad Spaghetti no concurso de bandas Toca & Segue 2009
04 Jul 2009, 21:00 09:00 PM - Op Art Café. Evento Lisboa a Nú. Arte de Guerrilha
Docas de Alcântara, Lisboa, - Evento organizado pela associação Arte de Guerrilha, Lisboa a Nú, com a participação da banda de Bluegrass Portuguesa, Stonebones & Bad Spaghetti

14 de junho de 2009

Vision -Visão-Bird Vision


Birds have the ability to sense the Earth's magnetic field, and now scientists believe that they may actually "see" it with their eyes. According to a study posted on PLoS, a molecule known to be in birds' eyes that is sensitive to magnetic fields is directly linked to a part of birds' brains where visual information is processed.As the study puts it, "In garden warblers, Sylvia borin, the cryptochrome-expressing retinal ganglion cells and a neuronal cluster located in posterolateral regions of both forebrain hemispheres ("Cluster N") show high, sensory-driven neuronal activity as indicated by the expression of the Immediate Early Gene ZENK during magnetic orientation [12]-[14]..."Ok, we have no idea what that sentence means, but the point of the study is that birds can see magnetic fields...or....something. At any rate, the study sheds light on how migratory birds can consistently find their way across large distances, through all different weather conditions, year after year, without any electronic equipment. Scientists are speculating that the birds can align themselves with a magnetic compass that is actually in their field of vision. How they manage to so accurately crap on our heads, however, remains a mystery.
September 28, 2007 6:51 PM, by Benny Bleiman


Barry Kent Mackay

Chris Kerrigan

David Fewster

Jane Brooke

Michael Mesure

Rosemary Mosco

Jan Kubelik plays "Zephyr" by Hubay