Correlation between serum enzymes and serum unsaturated vitamin B12 binding proteins in primary liver carcinoma

The serum unsaturated vitamin B12-binding capacity (UBBC), unsaturated transcobalamin (UTC) I, UTC II, UTC III levels, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase activities and bilirubin concentration were estimated in 61 patients with liver diseases (31 with hepatoma, 30 with viral hepatitis). The levels of serum cobalamin, UTC I, UTC III, UBBC, alanine and aspartate aminotransferases, and bilirubin were raised in both hepatoma and viral hepatitis patients. Serum UTC II was reduced in both conditions. Alkaline phosphatase activity was significantly increased in hepatoma. Four significant correlations were observed among these parameters in the hepatoma patients while only one significant correlation was observed in viral hepatitis.     

绞股蓝属的染色体研究

报道了葫芦科绞股蓝属（Ｇｙｎｏｓｔｅｍｍａ Ｂ１．）８种共２０个居群的染色体数目,分别为２ｎ＝２２,３３,４４,６６,８８多倍体现象极为普遍。两个亚属;绞股蓝亚属（Ｓｕｂｇｅｎ．Ｇｙｎｏｓｔｅｍｍａ）和喙果藤亚属（Ｓｕｂｇｅｎ．Ｔｒｉｏｓｔｅｌｌｕｍ）的染色体基数均为Ｘ＝１１,并结合该属植物形态特征、繁殖方式和地理分布,对普遍出现的多倍体现象进行了讨论。     

The influence of the degree of cross-linking on the adsorption properties of chitosan beads

The influence of the degree of cross-linking (DCL) on chitosan beads was studied. Chitosan was prepared from the exoskeleton of Cape rock-lobsters, collected from the surroundings of Cape Town, South Africa. The chitosan beads were characterized; the beads water contents and pKa varied in the range of 90-96% and 4.3-6.0, respectively, and were found to decrease with increasing DCL (0.0-34.0%). A pH-model, which described the reversibility of the metal adsorbed onto the beads, was used to predict the equilibrium properties of copper adsorption onto the cross-linked beads. The model accounts for the effect of pH and the important model parameters, the equilibrium adsorption constant (Kads) and to a lesser extent the adsorbent adsorption capacity (qmax) showed to decrease with the DCL. The adsorbent capacity and the adsorption constant were determined as 3.8-5.0mmol/g chitosan and (9-90)x10(-4), respectively. The adsorption kinetics could be described using a shrinking core model and the effective diffusion coefficient (Deff) was determined as (8.0-25.8)x10(-11)m2/s. It was found that Deff decreases with the DCL mainly due to the decreased in water content of the beads at high DCL.     

烟草花叶病毒蚕豆株系基因组全序列分析及结构特征

根据已报道的TMV-U1株系核苷酸序列合成引物 ,利用RT-PCR技术获得了覆盖整个烟草花叶病毒蚕豆株系 (TMV-B)基因组的cDNA重组克隆 .结合末端测序技术 ,完成了TMV-B全基因组序列测定 .TMV-B全基因组共有 6 395个核苷酸组成 ,包括 4个开读框 (ORF) ,分别编码 1 2 6ku(含 1 1 1 6个氨基酸 )、1 83ku(含 1 6 1 6个氨基酸 )、30ku(含 2 6 8个氨基酸 )和 1 7.5ku蛋白 (含 1 5 9个氨基酸 ) .TMV-B与TMV-U1相比全基因组同源率达 99.4% ,两病毒基因组 5′ ,3′非编码区和CP基因完全相同 .TMV-B与TMV-U1之间在 1 2 6ku蛋白中有 6个氨基酸差异 ,5 4ku蛋白中有 2个差异 ,30ku蛋白中有 3个差异 .对导致TMV-B侵染蚕豆的可能致病机理进行了分析 .     

全面质量管理对老年心血管疾病患者的效果分析

目的：探讨全面质量管理模式时老年心血管疾病患者的生活质量的改善情况所起的积极作用,为临床护理提供参考。方法：选择2011年2月至2012年12月在我院心血管内科接受住院治疗的老年患者60例,随机分为常规组和全面管理组。常规组采取基础护理模式,全面管理组在常规护理的基础上对患者进行心理干预、健康教育及饮食管理等。对比两组患者干预前后生活质量改善情况,并对护理服务的满意度进行问卷调查。结果：全面管理组患者的生活质量较干预前明显改善,且患者的心理功能、生活能力及社交功能评分均显著优于常规组,差异具有统计学意义（P〈0．05）。全面管理组患者对心理护理、饮食管理、健康教育及护患沟通的满意度均高于常规护理组,差异具有统计学意义（P〈0．05）。结论：采取全面质量管理的模式对老年心血管疾病患者进行康复指导具有显著的效果,可明显改善患者的生活质量,并且能够提高患者对护理服务的满意度,值得临床推广。     

Description of a new species of Phylloscopus warbler from Vietnam and Laos

A new species of Phylloscopus warbler, which we name Phylloscopus calciatilis Limestone Leaf Warbler, is described from central and northern Vietnam and central and northern Laos; it probably also breeds in southernmost China. In morphology, the new species is very similar to Sulphur-breasted Warbler Phylloscopus ricketti , but it is smaller with a proportionately larger bill and rounder wing. Its song and calls are diagnostic. Based on mitochondrial and nuclear DNA, the new species is most closely related to P. ricketti and Yellow-vented Warbler Phylloscopus cantator , and it is inferred to be sister to the latter. The mitochondrial divergences between these three species are at the low end of the variation found in other species of Phylloscopus and Seicercus warblers, but greater than in other taxa generally treated as subspecies. Possible introgressive hybridization between the new species and P. ricketti is discussed, but more data are needed to establish whether it does occur and, if it does, to what extent. The new species appears to have a restricted breeding range in limestone karst environments, where it is locally common and therefore not under any immediate threat. In view of the recognition of the new species, all previous records of P. ricketti sensu lato need to be re-evaluated.     

微重力和宇宙射线对某些微生物的影响

随着科学的发展,人造卫星的发射成功,人类开始迈向空间,为揭示太空的真实情况,国内、外学者已进行了大量的探索工作(鲁子贤 1988)。我们利用我国发射的人造卫星进行了搭载试验。本文报道空间环境对微生物生长与遗传性状影响的     

Plant- and stimulus-specific variations in remote-controlled sieve-tube occlusion

Phloem injury triggers local sieve-plate occlusion including callose-mediated constriction and protein plugging of sieve pores. In intact plants, reversible sieve-plate occlusion is induced by electric potential waves (EPWs)—accompanied by Ca²⁺-influx—as result of distant burning. Here, we present additional results which pertain to (a) the variability of EPW-profiles in relation to forisome conformation in intact Vicia faba plants and (b) the differential occlusion reactions to burning and cutting in various plant species. A correlation between stimulus perception and mode of phloem loading is discussed.Key words: callose, electrical potential waves, forisome, membrane potential, phloem transport, sieve-element occlusion, wound potentials