Yejin Fenxi/Metallurgical Analysis | Year: 2014
The advances in technical characteristics of inductively coupled plasma atomic emission spectrometric (ICP-AES) instruments as well as the application of analytical methods in recent years are reviewed. The newly developed instruments usually adopt advanced technologies (such as CCD/CVD or CMOS solid detector, solid digital generator, bi-directional observation with vertical torch tube, high-performance computer, powerful software, spectral fitting of multi-components and high-high flux automatic sampling) and new energy-efficient design philosophy. Therefore, the spectral resolution, analytical stability and speed as well as cost performance are significantly improved. The analytical wavelength and linear range are also expanded. With the development of advanced instruments having advantageous performances and high cost performance, the application of ICP-AES method will be greatly extended. It can be used for the determination of metallic elements and non-metallic elements in inorganic matters. In addition, it is also applicable for the determination of metallic elements and non-metallic elements in organic matters. The application fields are also enlarged. At present, ICP-AES method has become the necessary analysis method in analytical laboratories for metal materials, energy and chemical industry, water quality and environment, and mineral resources. ©, 2014, Central Iron and Steel Research Institute. All right reserved.
Laboratory Medicine | Year: 2010
Objective: By analyzing and comparing results from a 2008 proficiency test (PT) event to results from a 2003 PT event, we assessed whether laboratories' abilities to detect Escherichia coli (E. coli) O157:H7 had improved in the intervening 5 years. Methods: A proficiency test sample containing E. coli O157:H7 was mailed to participants enrolled in a PT program, and a survey about stool culture screening practices was distributed to laboratories that had submitted a result for the proficiency test sample. Results: In 2008, 85.3% of laboratories detected E. coli O157:H7, compared to 70% of laboratories in 2003. Also, 72.3% of laboratories now screen at least all bloody stools, compared to 49% of laboratories in 2003. Conclusions: Laboratories' abilities to detect E. coli O157:H7 has improved substantially since 2003. However, many laboratories still fail to follow screening recommendations for Shiga toxin-producing E. coli.
XXI IMEKO World Congress "Measurement in Research and Industry" | Year: 2015
Proficiency testing provides objective evidence of laboratories testing competence. Laboratories quality control procedures can monitor the validity of tests and calibrations undertaken by measuring continuing performance in multiple rounds of a proficiency testing program. Such monitoring will allow laboratories to identify problems, check for testing bias and other trends and review the effectiveness of corrective actions where problems were highlighted by a proficiency test.
Yejin Fenxi/Metallurgical Analysis | Year: 2015
The progress of analysis standard and the trend of proficiency testing of iron ore were summarized. The general situation for analysis of iron ore and the requirements on analysis of its chemical component were introduced. Through comparing the international standards (ISO standard) and national standards (GB standard) for chemical analysis of iron ore, several main determination indexes were analyzed. The proficiency testing schemes of iron ore conducted by China NIL Research Center for Proficiency Testing in recent years were presented, and several typical schemes were reviewed, including total analysis of iron ore CRMs, X-ray fluorescence spectrometric analysis of iron ore and valence state analysis of iron ore. ©, 2015, Central Iron and Steel Research Institute. All right reserved.
Accreditation and Quality Assurance | Year: 2015
Participants taking part in proficiency testing (PT) schemes often question whether the transport conditions, particularly time and temperature, could affect their sample and subsequently their performance scores. This is particularly true for microbiology PT schemes which contain living microorganisms and therefore pose a significant challenge in maintaining stability during a range of different transport conditions. Even though the PT provider can perform stability testing, it is impossible to predict and reproduce all possible environmental conditions that samples could be exposed to during transport. In this study, a number of PT scheme samples were selected in order to observe the effects of transport on the participant results for a range of different microorganisms and matrices. For each microorganism over a number of rounds, the participant results were compared against date of analysis, average distance travelled (km) and average temperature (°C) of destination country in order to determine whether there were any significant trends between participants’ results and the different transport conditions. More than half of participants (62 %) received and tested the PT samples within 4 days of the dispatch date, and 90 % of participants received and tested the samples within 10 days of the dispatch date. Distance travelled by samples ranged from 0 to 16000 km, and the average temperature of destination countries ranged from –10 °C to +25 °C. The results varied by round and microorganism, but overall the date of analysis, distance travelled and average temperature of destination country were not found to have a significant effect on participant results. Even participants from the same country receiving and testing the same sample at the same time could obtain very different results which are therefore unlikely to be due to transport factors. © 2015, Springer-Verlag Berlin Heidelberg.
Accreditation and Quality Assurance | Year: 2015
Although there are a wide range of factors that may contribute to poor performance results, one of the most fundamental aspects that can be a contributory cause is the interpretation of the results obtained through testing. During a number of rounds of the Quality in Microbiology Investigation Competency Assessment Scheme, it was noted that although all participants are provided with the same information, not all participants interpreted this information in the same manner, causing several to obtain poor/unsatisfactory performance scores. This raised the question: how critical is analyst interpretation to gaining satisfactory performance scores? © 2015, Springer-Verlag Berlin Heidelberg.
Proficiency | Date: 2012-05-15
Computer software for proficiency testing and competency assessment of laboratory personnel wherein the software is internet web-based.
Proficiency | Date: 2012-01-10
Computer software programs for the integration of text, audio, graphics, still images and moving pictures into an interactive delivery for multimedia applications for proficiency testing and competency assessment of laboratory personnel; computer processing software to process the image colors with the color and intensity and interpret the results as tendencies of the organs, glands and tissues according to the iridology charts for proficiency testing and competency assessment of laboratory personnel; and computer software for processing digital images for proficiency testing and competency assessment of laboratory personnel.
IEEE Internet Computing | Year: 2014
Over the past decade, the Web has morphed into an interaction and user-content-rich environment. For many online users, the Web has become a routine and integral part of their daily lives. For some, it has even become an extension of their real-world existence. With this heightened interdependence on this instance of the Web - Web 2.0 - we must pay special attention to the security (and privacy) of both the foundation and the set of new tools, processes, assumptions, and modes of operation. © 2014 IEEE.