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151.
Subnational regional jurisdictions rarely have at their disposal a reasonable array of timely statistics to monitor their economic condition. In light of this, we develop a procedure that simultaneously estimates a quarterly time series for all regions of a country based upon quarterly national and annual regional data. While other such techniques exist, we suggest a temporal error structure that eliminates possible spurious jumps. Using our approach, regional analysts should now be able to distribute national growth among regions as soon as quarterly national figures are released. In a Spanish application, we detail some practicalities of the process and show that our proposal produces better estimates than the uniregional methods often used. Copyright © 2007 John Wiley & Sons. Ltd. 相似文献
152.
J. García-Estañ J. A. Muñoz M. C. Serrano L. F. Carbonell M. T. Miras Portugal T. Quesada 《Cellular and molecular life sciences : CMLS》1985,41(1):61-62
Summary Fasting (48 h) results in dopamine-beta-hydroxylase (DBH) release both in adrenal gland and spleen, suggestive of an increase in the activity of these organs. Cold exposure (48 h) produces a dissociation of the, sympathoadrenal response. When both stimuli are simultaneously employed, the DBH response suggests the preponderance of the response to fasting. Plasma DBH is decreased in all groups studied, this could be due to its half-life and the splenic DBH depletion.This work was supported by a grant of Fondo de Investigaciones Sanitarias de la Seguridad Social, No. 83/0905. 相似文献
153.
用两态原子轨道展开方法研究计算了中高能H+与类氦离子(Be2+,B3+,C4+,N5+,O6+)和He原子碰撞的电子俘获截面.结果表明在中高能区本文结果与实验较好地符合. 相似文献
154.
用TBD-Span80-二甲苯乳状液膜体系研究了La3+的迁移行为,确定了完全、快速迁移La3+的条件.在该条件下,能够使La3+从常见过渡元素Fe3+、Co2+、Ni2+、Cu2+、Cd2+、Mn2+、Zn2+等离子的混合液中得到完全分离. 相似文献
155.
采用离子交换树脂(M型阴树脂、D61阳树脂)从发酵液中提取柠檬酸、工艺简单、提取收率可达90%以上,无废渣产生,有利于环境保护,且成品质量好,有工业应用价值。 相似文献
156.
Summary Over three years, theAdh and -Gpdh loci have been studied in two cellar populations ofDrosophila melanogaster and in two field populations which were each near to one of the cellars. Analyses of gene frequencies indicate that the divergence among subpopulations is greater in theAdh locus than in the -Gpdh locus. Selection for or againstAdh
S
allele acting on theIn(2L)t inversion influences of the -Gpdh alleles. This phenomenon may contribute to explain the maintenance of theAdh and -Gpdh polymorphism and of theIn(2L)t inversion. 相似文献
157.
Summary By means of hungry Triatomid bugs, samples of blood (40–200l) can be obtained from small mammals, such as bats, without causing any harm to the animals. The blood can be extracted from the gaster of the bug immediately after the bug has finished sucking. The method was successfully used for measuring the energy budget by the doubly labeled water method, and for obtaining material for lymphocyte cultures, and may prove useful in other fields, too.M. Volleth is very much obliged to Prof. Dr R. A. Pfeiffer for giving her the opportunity to work at the Institute of Human Genetics. 相似文献
158.
Ž. Bradamante A. Pećina-Hrnčević I. Ciglar 《Cellular and molecular life sciences : CMLS》1980,36(10):1210-1211
Summary Scarce and randomly oriented oxytalan fibres are present in the connective tissue of dental pulp in both deciduous and permanent teeth.This investigation was supported by grant No.V-10/78 from the SIZ-V of S. R. Croatia. 相似文献
159.
本文把约束优化问题转化为互余问题,然后用分段光滑同伦间接地解决了约束优化问题minf(x),x≥0和互余问题,并给出了数值例子。 相似文献
160.
在<高等数学>教学中,如何使学生迅速、准确、深刻、灵活地理解和应用所学知识的内涵及思想方法?如何利用课堂有限的时间去启发和激励学生学会创新性探求思维?教学阐释的完满实现,为高校素质教育在课堂的实施开辟了一条新的途径. 相似文献