关于亚纯函数唯一性问题的注记

本文应用 Nevanlinna 理论,研究了在相同点覆盖二个有限集合的整函数与具有两个亏值的亚纯函数的唯一性问题,改进了 F.Gross,C.C.Yang,熊庆来,扬乐,谢晖春和本文作者的有关定理.     

关于一类亏函数的亏量和取最大值的亚纯函数

设 f(z)是下级μ<∞的亚纯函数,α_i(z)是满足 T(r,a_i)=0{T(r,f)}的亚纯函数,若(?)δ(a_i(z)),f)=1;δ(∞,f)=1,则 a),的级γ=μ,且为正整数;b)f 的亏函数总数≤μ+1;c)每一个亏量为1/μ的整数倍;d)每一个亏函数都是 f 的渐近函数。     

消费需求不足的原因分析与对策

消费需求是总需求的重要组成部分,是促进经济增长的重要动力.但是我国目前市场消费需求不足,已成为经济增长的主要制约因素.在分析影响消费需求的原因之后,提出了扩大消费需求的综合对策.     

Expression of the mutant gene for L-gulono-γ-lactone oxidase in scurvy-prone rats

A mutant strain of Wistar rats with L-gulono--lactone oxidase deficiency has recently been established. To investigate this deficiency by DNA and RNA blot hybridization analyses, a fragment of a previously cloned cDNA encoding rat L-gulono--lactone oxidase was used as a probe. When genomic DNA of the mutant rat was digested with several restriction enzymes, the probe hybridized to fragments of the same sizes as those produced from DNA of normal rats. Poly(A)⁺RNA from the liver of the mutant rat was found to contain an L-gulono--lactone oxidase-specific mRNA of a normal size at a comparable level to that of normal rats. An in vitro translation experiment revealed that the mRNA programmed the synthesis of an enzyme protein which had the same molecular weight as that of the translational product of the normal mRNA, although the amount synthesized was markedly reduced as compared with that synthesized with the normal mRNA. In accordance with this observation, a very low but definite degree of L-gulono--lactone oxidase activity was detected in the microsomes of the mutant rat by a newly developed, highly sensitive method.Acknowledgments. The authors thank Dr Susumu Makino, Shionogi Research Laboratories, Shionogi & Co., Ltd, Japan, for his kind donation of normal (ODS- +/+) and ODS (ODS-od/od) rats. This work was supported in part by Grant-in-Aid (59570103) for Scientific Research from the Ministry of Education, Science and Culture of Japan.     

Molybdenum cofactor biosynthesis and deficiency

The molybdenum cofactor (Moco) forms the active site of all molybdenum (Mo) enzymes, except nitrogenase. Mo enzymes catalyze important redox reactions in global metabolic cycles. Moco consists of Mo covalently bound to one or two dithiolates attached to a unique tricyclic pterin moiety commonly referred to as molybdopterin (MPT). Moco is synthesized by an ancient and conserved biosynthetic pathway that can be divided into four steps, according to the biosynthetic intermediates precursor Z (cyclic pyranopterin monophosphate), MPT and adenylated MPT. In a fifth step modifications such as attachment of nucleotides, sulfuration or bond formation between Mo and the protein result in different catalytic Mo centers. A defect in any of the steps of Moco biosynthesis results in the pleiotropic loss of all Mo enzyme activities. Human Moco deficiency is a hereditary metabolic disorder characterized by severe neurodegeneration resulting in early childhood death. Recently, a first substitution therapy was established. Received 17 June 2005; received after revision 18 August 2005; accepted 1 September 2005     

试探我国现行房地产税费制度的缺憾

我国现行房地产税费制度对我国房地产业的发展具有不可估量的作用。但是 ,目前许多人对房地产税费不分 ,税费制度也存在许多缺憾。本文就房地产税费的区别及我国现行房地产税费制度的缺憾进行了探讨 ,并提出了建议和设想。     

老年虚秘不同舌象的血液流变学比较

为了探讨老年虚秘病理舌象的形成与血液流变学的关系,我们对虚秘中的阳虚湿盛证与阴液不足证的患者进行了舌诊检查与血液流变学检测,结果表明两组病理舌象与血液流变学均有明显差异,并呈正相关.提示了血液流变学可作为研究舌诊的客观指征之一.     

Identification of quantitative trait loci affecting tolerance to low phosphorus in rice (Oryza Sativa L.)

Phosphorus (P)-deficiency in rice (Oryza. Sativa. L) may cause yield reductions. This research has been conducted to map quantitative trait loci (QTLs) for tolerance to low phosphorus stress in a doubled haploid (DH) population. By using the linkage map of this population, the QTLs for relative dry weight, relative P content and relative P utilization efficiency have been located. The results indicate that one RFLP marker located on chromosome 6 is closely associated with relative root dry weight, relative shoot dry weight and relative total dry weight, which explain 24.9%, 20.5% and 25.2% of the total phenotypic variations, respectively. Two QTLs affect relative P uptake content, which account for 20.7% of the total phenotypic variations. One micro-effect QTL has been found to be associated with relative P utilization efficiency. It is suggested that the P uptake efficiency is more associated with P efficiency. Among the secondary physiological indices of P uptake efficiency, the root dry weight is more important than others.     

Identification of quantitative trait loci affecting tolerance to low phosphorus in rice (Oryza Sativa L.)

Phosphorus (P)-deficiency in rice (Oryza.Sativa.L) may cause yield reductions.This research has been conducted to map quantitative trait loci (QTLs) for tolerance to low phosphorus stress in a doubled haploid (DH) population.By using the linkage map of this population,the QTLs for relative dry weight,relative P content and relative P utilization efficiency have been located.The results indicate that one RFLP marker located on chromosome 6 is closely associated with relative root dry weight,relative shoot dry weight and relative total dry weight,which explain 24.9%,20.5% and 25.2% of the total phenotypic variations,respectively.Two QTLs affect relative P uptake content,which account for 20.7% of the total phenotypic variations.One micro-effect QTL has been found to be associated with relative P utilization efficiency.It is suggested that the P uptake efficiency is more associated with P efficiency.Among the secondary physiological indices of P uptake efficiency,the root dry weight is more important than others.     

肺气虚实验指标探索与康复治疗观察

报告了对肺气虚病人进行多项实验指标研究与康复治疗观察结果。实验发现肺气虚者血α１—抗胰蛋白酶下降、血浆血管紧张素Ⅱ增加、肺循环阻力增高、肺通气功能障碍、血氧浓度（ＰＯ２）下降、血二氧化碳浓度（ＰＣＯ２）上升等，经统计学处理与对照组有显著差异。对４１例观察对象进行多指标检测的综合分析，错判率仅４．３５％，说明综合指标判别率很高，可作为肺气虚临床诊断参考。对７８例肺气虚者进行４年的综合康复治疗（药物敷穴、呼吸操、补肺丸应用），设３０例对照组，结果症状减轻总有效率７７．５％（对照组４５．９％），肺功能、免疫功能及ＰＯ２的改善与对照组有显著差异。通过观察，认为该综合疗法可能对慢性阻塞性肺疾病（ＣＯＰＤ）治疗有一定的推广价值。