延髓梗死并发Ondine’ s curse 综合征是一种延髓梗死并发中枢性睡眠呼吸暂停综合征，是呼吸中枢感受器对二氧化碳敏感性降低，使肺泡气体交换障碍，引起睡眠间高碳酸血症及低氧血症，出现呼吸运动减弱至暂时停止，为极特殊的呼吸中枢...延髓梗死并发Ondine’ s curse 综合征是一种延髓梗死并发中枢性睡眠呼吸暂停综合征，是呼吸中枢感受器对二氧化碳敏感性降低，使肺泡气体交换障碍，引起睡眠间高碳酸血症及低氧血症，出现呼吸运动减弱至暂时停止，为极特殊的呼吸中枢障碍［1，2］。此病的临床特点是患者多意识清楚，在安静睡眠中逐渐出现呼吸减弱或暂停，继而出现紫绀、血氧饱和度下降、昏迷甚至心脏骤停。此病患者存在较多不安全因素，增加了临床护理工作的难度。我科2010年5月～2012年10月收治该病患者9例，护理体会报告如下。展开更多
Historically the price of a forest estate has, at least in Sweden, been closely related to the financial return from the estate, but this connection no longer seems to be that strong, other factors that previously had...Historically the price of a forest estate has, at least in Sweden, been closely related to the financial return from the estate, but this connection no longer seems to be that strong, other factors that previously had limited influence on prices now add to the price. Factors like site productivity and age distribution affect the financial return of a forest estate but is it obvious that these factors still influence prices as they once did? Over the last 20 years, the price of forest estates has increased dramatically. If development of prices has led to a weakened connection between return and price, could this be explained by the fact that previously price affecting factors have less weight when valuing forest estates? The purpose of the study was therefore to investigate how a number of factors influence the forest estate price;including site productivity and age distribution. The results shows that neither site productivity, nor age distribution have a significant impact on the forest estate price. What mainly influence the prices seems to be the standing forest volume on the estate and region. The development of the prices seems not only to have influenced the relationship between the return from the forest and the prices, but also minimized the influence of factors like age distribution and site productivity. This means that estates that are bought within the same region, at the same price per cubic meter, can have considerably different potential to gain financial return.展开更多
文摘延髓梗死并发Ondine’ s curse 综合征是一种延髓梗死并发中枢性睡眠呼吸暂停综合征，是呼吸中枢感受器对二氧化碳敏感性降低，使肺泡气体交换障碍，引起睡眠间高碳酸血症及低氧血症，出现呼吸运动减弱至暂时停止，为极特殊的呼吸中枢障碍［1，2］。此病的临床特点是患者多意识清楚，在安静睡眠中逐渐出现呼吸减弱或暂停，继而出现紫绀、血氧饱和度下降、昏迷甚至心脏骤停。此病患者存在较多不安全因素，增加了临床护理工作的难度。我科2010年5月～2012年10月收治该病患者9例，护理体会报告如下。
文摘Historically the price of a forest estate has, at least in Sweden, been closely related to the financial return from the estate, but this connection no longer seems to be that strong, other factors that previously had limited influence on prices now add to the price. Factors like site productivity and age distribution affect the financial return of a forest estate but is it obvious that these factors still influence prices as they once did? Over the last 20 years, the price of forest estates has increased dramatically. If development of prices has led to a weakened connection between return and price, could this be explained by the fact that previously price affecting factors have less weight when valuing forest estates? The purpose of the study was therefore to investigate how a number of factors influence the forest estate price;including site productivity and age distribution. The results shows that neither site productivity, nor age distribution have a significant impact on the forest estate price. What mainly influence the prices seems to be the standing forest volume on the estate and region. The development of the prices seems not only to have influenced the relationship between the return from the forest and the prices, but also minimized the influence of factors like age distribution and site productivity. This means that estates that are bought within the same region, at the same price per cubic meter, can have considerably different potential to gain financial return.
