美国国家标准协会(NISO)发布的《连续出版物内容交换协议》(Protocol for Exchanging Serial Content(PESC))可以一定程度地解决连续出版物的内容在出版商、出版商代理、发现服务组织方、转换供应商、存档服务商等不同的组织间大批量转...美国国家标准协会(NISO)发布的《连续出版物内容交换协议》(Protocol for Exchanging Serial Content(PESC))可以一定程度地解决连续出版物的内容在出版商、出版商代理、发现服务组织方、转换供应商、存档服务商等不同的组织间大批量转移交换过程中格式不统一、交换困难、内容缺失、效率低下等问题。本文通过对PESC产生的背景、内容包格式结构规范、不同级别的一致性规范以及有效实施指南、对我国行业标准的启示等方面进行详细深入阐述,借以推进我国图书馆界对PESC协议的理解,提升连续出版过程中各方之间低成本高效率地进行内容交换的可能性。同时,也对我国图书馆界构建标准化、统一的连续出版内容的交换协议标准的制定和实施具有重要的借鉴意义。展开更多
FI system was used for the determination of histamine. A mini-column filled with amberlite resin （weak cation exchanger） was introduced to the flow system. A 200 laL of the sample was injected into the carrier strea...FI system was used for the determination of histamine. A mini-column filled with amberlite resin （weak cation exchanger） was introduced to the flow system. A 200 laL of the sample was injected into the carrier stream through the injection valve. The merged streams were passed through a quartz flow cell in a spectrophotometer connected to recorder. Under the optimum conditions, the calibration curve was linear in the range 0.02-1.5 μg mL^-1 of histamine using the peak height as an analytical signal, while the detection limit was 0.01 μg mL^-1. The precision and accuracy of the method were studied depending upon the values of the relative standard deviation and relative error percentage. The selectivity of the method was investigated by studying the effect of interference from other species accompanied with histamine in fish meal. Under the optimum conditions, the system was used for on line separation, preconcentration of histamine. The proposed method was applied for the determination of histamine in fish meal. The results were compared with the standard method and a good agreement between the results was obtained.展开更多
文摘美国国家标准协会(NISO)发布的《连续出版物内容交换协议》(Protocol for Exchanging Serial Content(PESC))可以一定程度地解决连续出版物的内容在出版商、出版商代理、发现服务组织方、转换供应商、存档服务商等不同的组织间大批量转移交换过程中格式不统一、交换困难、内容缺失、效率低下等问题。本文通过对PESC产生的背景、内容包格式结构规范、不同级别的一致性规范以及有效实施指南、对我国行业标准的启示等方面进行详细深入阐述,借以推进我国图书馆界对PESC协议的理解,提升连续出版过程中各方之间低成本高效率地进行内容交换的可能性。同时,也对我国图书馆界构建标准化、统一的连续出版内容的交换协议标准的制定和实施具有重要的借鉴意义。
文摘FI system was used for the determination of histamine. A mini-column filled with amberlite resin （weak cation exchanger） was introduced to the flow system. A 200 laL of the sample was injected into the carrier stream through the injection valve. The merged streams were passed through a quartz flow cell in a spectrophotometer connected to recorder. Under the optimum conditions, the calibration curve was linear in the range 0.02-1.5 μg mL^-1 of histamine using the peak height as an analytical signal, while the detection limit was 0.01 μg mL^-1. The precision and accuracy of the method were studied depending upon the values of the relative standard deviation and relative error percentage. The selectivity of the method was investigated by studying the effect of interference from other species accompanied with histamine in fish meal. Under the optimum conditions, the system was used for on line separation, preconcentration of histamine. The proposed method was applied for the determination of histamine in fish meal. The results were compared with the standard method and a good agreement between the results was obtained.
