Totally found 10149028 items.

  • [期刊] Fine‐scale geographic clustering pattern of human T‐cell leukemia virus type 1 infection among blood donors in Kyushu‐Okinawa, Japan
    Human T‐cell leukemia virus type I (HTLV‐1) infection is endemic in Japan, particularly clustered in the southwestern district, Kyushu‐Okinawa, which consists of eight prefectures that further consist of 274 municipalities. However, no information is available about the fine‐scale distribution of HTLV‐1 infection within Kyushu‐Okinawa. To assess the municipal‐level distribution of people with HTLV‐1 infection in Kyushu‐Okinawa, we performed a cross‐sectional study using a fine‐scale geographic information system map based on HTLV‐1 screening test results from the Japanese Red Cross database from September 2012 to February 2014. Of the 881 871 (646 914 male, 234 957 female) screened blood donors, 981 were seropositive for HTLV‐1 by confirmatory test. The seroprevalence was 0.11% (95% confidence interval [CI] 0.10%‐0.12%) for all, 0.094% (95% CI, 0.09%‐0.10%) for male, and 0.16% (95% CI, 0.14%‐0.18%) for female individuals. The sex‐ and age‐specific HTLV‐1 seroprevalence varied significantly across municipalities; particularly, the seroprevalence among women aged 50 years was significantly higher than that of men in both the mainland of Kyushu‐Okinawa and the satellite island, in all of which the seroprevalence of HTLV‐1 was more than 1.2%. These results show that, even in the Kyushu‐Okinawa district, there are endemic clusters of HTLV‐1 in small areas. This suggests that public health education programs are needed to eliminate new HTLV‐1 infection in these areas.
  • [专利] 一种高纯度岩藻多糖的制备方法
    本发明公开了一种高纯度岩藻多糖的制备方法,属于多糖类的制备技术领域。本发明针对目前传统提取岩藻多糖的过程中,浸提液中杂质多,气人在高温下多糖分解,且在预处理过程中多糖损失达到10%以上,本发明提供了一种高纯度岩藻多糖的制备方法,本发明首先对新鲜海草进行培养,使其岩藻多糖含量增加,再使用盐酸溶液,在微波辅助下进行浸提,将所得的浸提液进行脱色,然后将其与海泡石、醋酸钠混合均匀,在通电状况下纯化,将所得的纯化液与三氯乙酸混合,去除蛋白沉淀,最后提纯得纯度在45~55%的岩藻多糖。
  • [专利] 溅射靶、光学功能膜及层叠配线膜
    本发明的溅射靶中,作为金属元素,将Mo及In中的任一种或两种以及Cu及Fe中的任一种或两种作为主成分,且含有5~80原子%的Mo及In中的任一种或两种以及20~95原子%的Cu及Fe中的任一种或两种,所述金属元素的一部分或全部以氧化物形式构成。
  • [会议] 多金属氧簇/嵌段共聚物杂化胶束的构筑与形貌调控
    嵌段共聚物具有相分离特性,能够产生多级自组装结构,因此常被作为软模板用于构筑功能材料。多金属氧簇是一类结构多样、功能丰富的无机簇,具有优异的催化、光学、磁学等性质。利用嵌段共聚物的相分离来诱导多金属氧簇组装可以制备新型聚合物杂化材料。目前,研究者大多通过静电作用将多金属氧簇直接与嵌段共聚物复合。但是,这类方法存在簇负载量低、
    关键词: 嵌段共聚物;杂化;自组装结构;新型聚合物;软模板;分离特性;功能材料;类结构;载量;氢键相互作用
  • [专利] Urethane-based pressure-sensitive adhesive and surface protective film using the pressure-sensitive adhesive
    (KR20140058355) Provided is a urethane-based adhesive with improved adhesive residue prevention characteristics. Moreover, provided is a surface protective film using the urethane-based adhesive on an adhesive layer. The surface protective film has improved adhesive residue prevention characteristics. Moreover, provided is an optical member or an electronic member to which the surface protective film is attached. The urethane-based adhesive contains a polyurethane-based resin, wherein the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition containing a polyol (A) and a polyfunctional isocyanate compound (B). The polyurethane resin contains a deterioration inhibitor.
  • [专利] 微波反应制得的具有气凝胶特性的SiO2纳米级多孔材料
    微波反应制得的具有气凝胶特性的SiO2纳米级多孔材料及其制备方法,本实用新型提供一种微波反应制得的具有气凝胶特性的SiO2纳米级多孔材料,该纳米级多孔材料由二氧化硅骨架(1)和泡状纳米级孔隙(2)组成,泡状纳米级孔隙(2)分布在二氧化硅骨架(1)之间。其制备方法包括了二氧化硅溶胶制备、湿凝胶制备、母液陈化、常压干燥四个步骤,其中二氧化硅溶胶制备采用了以下工艺:以有机硅氧烷,有机溶剂,水,酸催化剂为原料;各组份按特定比例在容器中混合;混合的同时经过微波辐照发生水解缩聚反应或混合后的混合物经过微波辐照发生水解缩聚反应。由于采用了微波辐照工艺,在二氧化硅溶胶中制造了大量微气泡,在二氧化硅的基体上形成了大量的纳米级泡状孔隙,同时保留了二氧化硅空间骨架,因而不仅得到了极大的比表面积的二氧化硅多孔材料,而且有更高的强度。此外,因无需二氧化碳超临界干燥工艺,故大幅减低了生产成本。
  • [资讯] 天气变暖紫外线强度增高为防晒不吃绿叶菜欠妥
    天气变暖紫外线强度越来越高此时防晒被不少美女们提到了护肤中最为重要的一环。而提到防晒除了防晒品的选择外少吃所谓的“感光蔬菜”也是不少人津津乐道的话题并且有很多女士在身体力行。 不少人认为芹菜等绿叶蔬菜含有叶绿素它是一类光敏物质能吸收光能促进很多化学反应的发生包括氧化反应。所以吃绿叶菜之后晒太阳可能会促进皮肤老化长斑因此也会让人越吃越黑。于是很多女士都坚守一个原则那就是早上和中午不能吃青菜一定要到晚上才能吃原因就是害怕吃了青菜之后晒太阳会引起皮肤的麻烦。 事实并非如此。研究表明叶绿素的吸收率很低摄入之后95%以上从大肠被排出体外。因此它根本没有可能大量进入人体。少量进入人体的叶绿素主要分布在肝脏、淋巴结和脾脏当中皮肤当中虽然也有但数量甚少。 实验发现即便给人吃每天300毫克的叶绿素这个数量远远超过日常吃青菜的摄入量血液里的叶绿素浓度也不过是0.002毫克/毫升而皮下脂肪中的叶绿素含量更是少得可怜。因此如果午餐吃了叶绿素它并不会立刻被吸收。因为食物在胃里会停留4-6个小时。进入小肠之后才能考虑到吸收的问题而食物在小肠的停留时间有十几个小时之多等到叶绿素被充分吸收的时候已经完全不用担心防晒的问题了因为此时太阳已然下山。 专家表示为了防晒而不吃绿叶蔬菜简直是让人们在放弃一种极好的食物。因为叶绿素有减轻体味的作用还是非常好的解毒物质又是大有希望的抗癌物质包括皮肤癌。 京华时报记者叶洲
  • [期刊] The human proteomics initiative (HPI)
    The availability of the human genome sequence has enabled the exploration and exploitation of the human genome and proteome to begin. Research has now focussed on the annotation of the genome and in particular of the proteome. With expert annotation extracted from the literature by biologists as the foundation, it has been possible to expand into the areas of data mining and automatic annotation. With further development and integration of pattern recognition methods and the application of alignments clustering proteome analysis can now be provided in a meaningual way. These various approaches have been integrated to attach, extract and combine as much relevant information as possible to the proteome. This resource should be valuable to users from both research and industry.
  • [资讯] 9月11日国内塑料LDPE产品市场价格行情快报
  • [期刊] 美国最大垃圾处理企业将进入中国市场2009-4-20中国固废网
    美国最大的垃圾处理公司一一美国废物管理公司(WasteManagementlnc.),准备在中国建设垃圾焚烧发电厂,有关谈判正在进行中。这项扩张将会使该公司在能源领域的收入翻倍。上海城投的子公司对建设、运营垃圾焚烧发电厂项目招标,美国废物管理公司投标了这些项目。昨天,该公司CEODavidSteiner在纽约透露了这个消息。此次投标中,这家总部位于休斯顿的美国公司的竞争对手包括威立雅环境和苏伊士。Steiner说,美国废物管理公司计划使能源收入占到公司收入的20%,这些垃圾发电项目将是实现目标的第一步。垃圾填埋气回收发电和垃圾焚化业务正在帮助美国废物管理公司度过经济危机的寒冬。该公司2008年底现金流4.8亿美元,本年度在固废领域可以动用2.5亿美元施展拳脚,主要用于收购能够“轻松吃进”并消化掉的资产。
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