黄旗海产卤虫(Artemiapathenogenetica)成虫干片蛋白质、脂肪酸、氨基酸和矿物质的分析

对黄旗海产卤虫（Ａｒｔｅｍｉａｐａｔｈｅｎｏｇｅｎｅｔｉｃａ）成虫干片的蛋白质、脂肪酸、氨基酸和部分矿物质进行了初步分析．结果表明,粗蛋白含量为５４．１４％,脂肪酸中亚麻酸的含量为１５．０７％,蛋白质中的１７种氨基酸和部分矿物质的含量也很丰富,由此说明从盐碱湖中开发利用卤虫资源,使之成为新的食品源和优质饲料有着广泛的前景．     

A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)

Severe Acute Respiratory Syndrome (SARS) is a newly identified infectious disease[1—5]. The global outbreak of SARS has been threatening the health of people worldwide and has killed 353 people and infected more than 5462 in 27 countries, as reported by WHO on April 29, 2003 (http://www.who.int/csr/sarscountry/en). Although it has been recognized that a variant of virus from the family of coronavirus might be the candidate pathogen of SARS[1—5], its identity as the unique pathogen sti…     

Diversity in enoyl-acyl carrier protein reductases

The enoyl-acyl carrier protein reductase (ENR) is the last enzyme in the fatty acid elongation cycle. Unlike most enzymes in this essential pathway, ENR displays an unusual diversity among organisms. The growing interest in ENRs is mainly due to the fact that a variety of both synthetic and natural antibacterial compounds are shown to specifically target their activity. The primary anti-tuberculosis drug, isoniazid, and the broadly used antibacterial compound, triclosan, both target this enzyme. In this review, we discuss the diversity of ENRs, and their inhibitors in the light of current research progress. Received 3 November 2008; received after revision 5 December 2008; accepted 8 December 2008     

山胡椒叶子化学成分及其应用

报道了山胡椒叶子的化学成分,鉴定了叶子中的精油成分,主要为β-水芹烯(19.03％)、月桂烯(17.93％)、香树烯(17.11％),γ-杜松烯(10.17％)、别罗勒烯(9.17％)、杜松烯(3.90％)、(+)-δ-杜松烯(3.18％)等34个化合物;分析了叶子中脂肪酸的组分,有月桂酸(1.053％)、肉豆寇酸(2.074％)、棕榈酸(13.368％)、棕榈烯酸(1.679％)、硬脂酸(1.850％)、油酸(20.499％)、亚油酸(45.70％)、亚麻酸(11.17％);并测得叶子中水溶性聚糖组成,有鼠李糖(13.13％)、阿拉伯糖和木糖(共64.80％)、葡萄糖(20.75％)。另外,还对山胡椒叶子精油的药用和聚糖的应用作了试验。     

Functions of fatty acid binding proteins

Summary Cytosolic fatty acid binding proteins (FABP) belong to a gene family of which eight members have been conclusively identified. These 14–15 kDa proteins are abundantly expressed in a highly tissue-specific manner. Although the functions of the cytosolic FABP are not clearly established, they appear to enhance the transfer of long-chain fatty acids between artificial and native lipid membranes, and also to have a stimulatory effect on a number of enzymes of fatty acid metabolism in vitro. These findings, as well as the tissue expression, ligand binding properties, ontogeny and regulation of these proteins provide a considerable body of indirect evidence supporting a broad role for the FABP in the intracellular transport and metabolism of long-chain fatty acids. The available data also support the existence of structure- and tissue-specific specialization of function among different members of the FABP gene family. Moreover, FABP may also have a possible role in the modulation of cell growth and proliferation, possibly by virtue of their affinity for ligands such as prostaglandins, leukotrienes and fatty acids, which are known to influence cell growth activity. FABP structurally unrelated to the cytosolic gene family have also been identified in the plasma membranes of several tissues (FABP_pm). These proteins have not been fully characterized to date, but strong evidence suggests that they function in the transport of long-chain fatty acids across the plasma membrane.     

中医治疗肾炎五法

以中医的整体观和辩证论治等理论为依据,将肾炎归纳为5个证型,即:上实下虚型,风热壅肺型,脾肾阳虚型,脾虚挟湿型,阴虚挟湿型。并分别确定治疗法则依次为:宣泄肺气、温阳补肾法;宣肺清热、解毒利咽法;补脾益肾,温阳利水法;益气健脾,温阳化湿法;滋阴清热,淡渗化湿法。从1983年以来临床治疗百多例。总有效率78.7％,无效率:21.3％。     

水溶液中C_1—C_8脂肪酸及乳酸的气相色谱分析

以C_1—C_8脂肪酸及乳酸和四甲基氢氧化铵生成季胺监,用二甲基乙酰胺作溶剂,在室温下和溴乙烷反应,生成对应的乙酯,其产率稳定在95％以上。生成的乙酯在10％丁二酸乙二醇聚酯柱上进行分离。本法操作简便,分离效果好。     

基于整数小波及马尔科夫链的图像自适应隐写术

针对目前主流的图像自适应隐写算法假定像素之间彼此独立,但忽略了像素之间的相关性这一问题,在最小化嵌入失真的模型下,提出了一种基于整数小波和马尔科夫链的图像自适应隐写术。首先利用整数小波对图像进行小波变换,然后利用马尔科夫链来表征邻近像素小波系数之间的相关性;并据此设计了新的失真代价函数。最后结合网格码(syndrome trellis code,STC)对秘密信息进行嵌入。实验表明该隐写术能够有效抵抗通用隐写分析,在安全性上相比已有的三种隐写术有明显提升。     

班种草籽油中脂肪酸组成的研究

本文采用气相色谱、色谱／质谱法对班种草中脂肪酸的组成及相对含量进行了研究。鉴定了油酸、亚油酸、α－亚麻酸以及γ－亚麻酸等十三种脂肪酸,不饱和脂肪酸达８８．２７％,其中油酸为１７．１８％,亚油酸为２３．３４％,α－亚麻酸为２１．５５％,γ－亚麻酸为１０．５５％。