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181.
The authors estimated the potential water supply in Taiwan based on hydrologic and water resource data sets pertaining to 233 rainfall stations, 145 stage stations and 109 reservoirs. The comparison between potential water supply estimates and predicted water demand indicated a slight water shortage, even though Taiwan normally receives a large amount of rainfall. This predicted water shortage likely occurred due to the uneven distribution of rainfall in Taiwan. Taken together, the results of this study demonstrate the importance of conservation of forests and paddy fields for the maintenance of base flow and effective management of reservoirs in Taiwan. 相似文献
182.
Schmitter-Edgecombe Maureen; Woo Ellen; Greeley David R. 《Canadian Metallurgical Quarterly》2009,23(2):168
The authors evaluated multiple memory processes and explored their contributions to everyday functional limitations in persons with mild cognitive impairment (MCI). Participants included individuals with amnestic MCI, nonamnestic MCI, and healthy older adults. As expected, the amnestic MCI group performed more poorly than the control and nonamnestic MCI groups on a content memory measure. Both MCI groups, however, performed more poorly than controls on the noncontent memory measures of prospective memory, temporal order memory, and source memory. Informants also reported that the MCI groups were experiencing greater difficulty than controls completing instrumental activities of daily living (IADLs). Noncontent memory measures were found to make an independent contribution to IADL performances over and above that of content memory. These findings demonstrate that impairments in memory beyond the traditionally assessed content memory are present in individuals with amnestic MCI and with nonamnestic MCI. The results further show that these noncontent memory processes, which have been linked with executive functioning, play a role in supporting IADLs. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
183.
Aluminium content of foods, as well as dietary aluminium intake of the Greek adult population, was determined using graphite furnace atomic absorption spectroscopy after microwave sample digestion and food consumption data. Al content ranged from 0.02 to 741.2?mg?kg?1, with spices, high-spice foods, cereal products, vegetables and pulses found to be high in Al. Differences in aluminium content were found between different food classes from Greece and those from some other countries. Aluminium intake of Greeks is 3.7?mg/day based on DAFNE Food Availability Databank, which uses data from the Household Budget Surveys. On the other hand, according to the per capita food consumption data collected by both national and international organisations, Al intake is 6.4?mg?day?1. Greek adult population has an Al intake lower than the Provisional Tolerable Weekly Intake of 7?mg?kg?1 body weight established by EFSA. Cereals and vegetables are the main Al contributors, providing 72.4% of daily intake. 相似文献
184.
介绍了奇瑞汽车股份有限公司涂装制造车间空气喷枪、胶枪、打磨机(抛光机)等常用生产工具的一般故障排除及日常管理办法。 相似文献
185.
李文渊 《武汉大学学报(工学版)》1987,(1)
的我国北方平原地区,降雨对地下水补给是地区地下水资源主要补给水源。研究降雨对地下水补给对地区地下水资源评价和合理开发利用地下水有着十分重要的意义。本文根据饱和——非饱和水分运动微分方程和初边值条件模拟浅埋地下水位在降雨入渗补给下有关土壤水和地下水问题。探讨降雨强度对地下水补给的影响;地下水位埋深对降雨补给的影响,以及土壤剖面含水量对降雨补给的影响,最后通过实例模拟蒸发——降雨条件下土壤水和地下水运动问题。 相似文献
186.
Estimating daily fat yield from a single milking on test day for herds with a robotic milking system
The objective of this study was to estimate the daily fat yield and fat percentage from one sampled milking per cow per test day in an automatic milking system herd, when the milking times and milk yields of all individual milkings are recorded by the automatic milking system. Multiple regression models were used to estimate the 24-h fat percentage when only one milking is sampled for components and milk yields and milking times are known for all milkings in the 24-h period before the sampled milking. In total, 10,697 cow test day records, from 595 herd tests at 91 Dutch herds milked with an automatic milking system, were used. The best model to predict 24-h fat percentage included fat percentage, protein percentage, milk yield and milking interval of the sampled milking, milk yield, and milking interval of the preceding milking, and the interaction between milking interval and the ratio of fat and protein percentage of the sampled milking. This model gave a standard deviation of the prediction error (SE) for 24-h fat percentage of 0.321 and a correlation between the predicted and actual 24-h fat percentage of 0.910. For the 24-h fat yield, we found SE = 90 g and correlation = 0.967. This precision is slightly better than that of present a.m.-p.m. testing schemes. Extra attention must be paid to correctly matching the sample jars and the milkings. Furthermore, milkings with an interval of less than 4 h must be excluded from sampling as well as milkings that are interrupted or that follow an interrupted milking. Under these restrictions (correct matching, interval of at least 4 h, and no interrupted milking), one sampled milking suffices to get a satisfactory estimate for the test-day fat yield. 相似文献
187.
This study examined how a previous episode of depression is related to daily pain and reactions to pain among individuals with fibromyalgia, a chronic pain syndrome. Seventy-one women with fibromyalgia (including 30 who were previously depressed) rated their pain and mood 3 times daily for 30 days. Each night, participants rated the extent to which they responded to pain by catastrophizing, how much control they had over that day's pain, their ways of coping with pain that day, and the effectiveness of their coping efforts. Multivariate multilevel regression models revealed that after controlling for neuroticism and current depressive symptoms, formerly depressed and never-depressed individuals differed in how they coped with increased pain and in how they appraised the efficacy of their coping efforts. Formerly depressed participants who also reported more current depressive symptoms showed a greater decline in pleasant mood on more painful days than did formerly depressed participants who were experiencing fewer current depressive symptoms. These findings illustrate how a history of depression can be captured in the dynamics of daily life. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
188.
Tennen Howard; Affleck Glenn; Coyne James C.; Larsen Randy J.; DeLongis Anita 《Canadian Metallurgical Quarterly》2006,11(1):112
The authors applaud A. S. Green, E. Rafaeli, N. Bolger, P. E. Shrout, and H. T. Reis's (2006) response to one-sided comparisons of paper versus electronic (plastic) diary methods (see record 2006-03820-006) and hope that it will stimulate more balanced considerations of the issues involved. The authors begin by highlighting areas of agreement and disagreement with Green et al. The authors review briefly the broader literature that has compared paper and plastic diaries, noting how recent comparisons have relied on study designs and methods that favor investigators' allegiances. The authors note some sorely needed data for the evaluation of the implications of paper versus plastic for the internal and external validity of research. To facilitate evaluation of the existing literature and assist in the design of future studies, the authors offer a balanced comparison of paper and electronic diary methods across a range of applications. Finally, the authors propose 2 study designs that offer fair comparisons of paper and plastic diary methods. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
189.
为了满足防汛决策对实时水雨情信息监视、查询以及预报调度等各种应用的需要,本对“实时水雨情数据库”在使用和维护中遇到的一些问题加以讨论。 相似文献
190.
持续降雨条件下,边坡浅层所形成的暂态水头变化对边坡稳定性具有重要的影响,一直是水工渗流研究领域内的热点和难点。鉴于当前理论上和技术上的困难,提出了根据降雨量及岩体的孔隙度估算边坡浅表中暂态水头大小的新方法,并结合工程实例对高边坡不同降雨情况下的暂态水头进行了计算,计算结果基本合理。从而为工程上边坡暂态水头的计算提供了一种简单的估算方法。 相似文献