Departing the Front With Grace, Few Scars

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Departing the Front With Grace, Few Scars

机译：优雅地离开前线，伤痕累累

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Thomas S. Tycz is leaving the Federal Communications Commission (FCC) after a 30-year career during which he forged a reputation as one of the most knowledgeable experts on satellite radio frequency and orbital-slot regulations. He has seen the satellite communications business develop from an all-government debating club into a multi-billion-dollar industry whose evolution is entirely dependent on decisions made by the FCC and its global equivalent, the International Telecommunication Union (ITU). Tycz has been on the front lines of battles waged at the ITU over how and when new systems are permitted into the market, including numerous contentious sessions with his counterparts in Europe, Africa, South America and Asia.

机译：托马斯·泰兹（Thomas S. Tycz）在30年的职业生涯后离开了联邦通信委员会（FCC），在此期间，他被誉为卫星无线电频率和轨道时隙法规方面最有知识的专家之一。他已经看到，卫星通信业务已经从一个政府辩论俱乐部发展成为一个数十亿美元的产业，其发展完全取决于FCC及其全球同等组织国际电信联盟（ITU）的决定。在如何以及何时将新系统投放市场方面，Tycz一直处于国际电联的前线斗争，包括与他在欧洲，非洲，南美和亚洲的同行进行的多次有争议的会议。

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《Space news》 |2005年第30期|p.22|共1页
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7. Endothermy of dynastine scarab beetles (Cyclocephala colasi) associated with pollination biology of a thermogenic arum lily (Philodendron solimoesense) : Cyclocephala colasi beetles are facultative endotherms that spend most of their adult lives inside the inflorescences of Philodendron solimoesense, where ambient temperature (Ta) averages about 28°C due to floral thermogenesis. Measurements of respiration within a range of Ta showed that active beetles became spontaneously endothermic at Ta below 28°C but were rarely endothermic above it. There was no evidence of endothermy within the inflorescences, indicating that activities in the floral chamber can occur without the high energy expense of endothermy. Bouts of endothermy occurred at lower Ta in respirometer chambers mainly in the evening, when the insects normally fly from one inflorescence to another, and during the night, when they normally eat and mate within the inflorescence. Patterns of endothermy in individual episodes were studied in non-flying beetles with respirometry and infrared thermal imaging. Heat was generated in the thorax by oscillatory waves of respiration that were coupled with thoracic temperature (Tth) increases. Stationary beetles could regulate Tth at about 33°C independently of Ta between 16 and 29°C. At Ta20°C, this represents a 116-fold increase in metabolic rate over resting, ectothermic values. Endothermy was clearly a requirement for flight, and beetles departing inflorescences warmed to about 30°C before take-off. During flight, Tth was dependent on Ta, decreasing from 37 to 28°C at Ta of 37 to 20°C, respectively. The lowest Ta at which flight could occur was about 20°C. Thermal conductance of stationary, endothermic beetles increased at higher metabolic rates, probably because of increased ventilatory heat loss. [O] . Seymour, R.S., White, C.R., Gibernau, Marc 2009

机译：与产热香芋百合（Philodendron solimoesense）授粉生物学相关的动态圣甲虫（Cyclocephala colasi）吸热：Cyclocephala colasi甲虫是兼性吸热体，它们大部分成年生活都在Philodendron solimoesense的花序中，其平均温度（Ta）由于花的生热作用，温度约为28°C。在Ta范围内的呼吸测量表明，活跃的甲虫在Ta低于28°C时会自发吸热，而在Ta高于28°C时很少吸热。在花序中没有吸热的迹象，表明花室中的活动可以在没有高的吸热能量消耗的情况下发生。吸热的爆发主要发生在晚上，当昆虫通常从一个花序飞到另一个花序时，以及在晚上，它们通常在花序中进食并交配时，在呼吸计室的较低Ta处发生。在非飞行甲虫中通过呼吸测定法和红外热成像研究了单个发作中的吸热模式。伴随着胸温（Tth）升高的呼吸振荡波在胸腔中产生热量。固定甲虫可以在约33°C的温度下调节Tth，而与Ta在16至29°C之间的温度无关。在Ta20°C下，这表示其代谢速率比静止的，等温的升高116倍。吸热显然是飞行的要求，离开花序的甲虫在起飞前会升温到约30°C。在飞行过程中，Tth取决于Ta，在Ta从37降至20°C时，Tth分别从37°C降至28°C。可能发生飞行的最低Ta约为20°C。固定的，吸热的甲虫的热导率以较高的代谢率增加，这可能是由于通风热损失增加所致。

Departing the Front With Grace, Few Scars

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