The Surface Analysis Working Group at the Consultative Committee for Amount of Substance, Metrology in Chemistry and Biology : A successful initiative by Martin Seah

Author(s):  
Wolfgang E. S. Unger ◽  
Toshiyuki Fujimoto
Author(s):  
Mojca Milavec ◽  
Megan H. Cleveland ◽  
Young-Kyung Bae ◽  
Robert I. Wielgosz ◽  
Maxim Vonsky ◽  
...  

Abstract Nucleic acid analysis is used in many areas of life sciences such as medicine, food safety, and environmental monitoring. Accurate, reliable measurements of nucleic acids are crucial for maximum impact, yet users are often unaware of the global metrological infrastructure that exists to support these measurements. In this work, we describe international efforts to improve nucleic acid analysis, with a focus on the Nucleic Acid Analysis Working Group (NAWG) of the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM). The NAWG is an international group dedicated to improving the global comparability of nucleic acid measurements; its primary focus is to support the development and maintenance of measurement capabilities and the dissemination of measurement services from its members: the National Metrology Institutes (NMIs) and Designated Institutes (DIs). These NMIs and DIs provide DNA and RNA measurement services developed in response to the needs of their stakeholders. The NAWG members have conducted cutting edge work over the last 20 years, demonstrating the ability to support the reliability, comparability, and traceability of nucleic acid measurement results in a variety of sectors.


2016 ◽  
Vol 6 (2) ◽  
pp. 244-259 ◽  
Author(s):  
Steven H. Belle ◽  
June Stevens ◽  
David Cella ◽  
Jennifer L. Foltz ◽  
Catherine M. Loria ◽  
...  

2005 ◽  
Vol 1 (T26A) ◽  
pp. 63-66
Author(s):  
Dennis Dennis ◽  
D. McCarthy ◽  
F. Arias ◽  
W. Dick ◽  
D. Gambis ◽  
...  

The definition of UTC was implemented in 1972, principally to accommodate celestial navigation and follows recommendation 460 of the International Radio Consultative Committee (CCIR) in 1970. Since 1972 the use of electronic means to navigate has overtaken celestial navigation. This fact along with increasing public dissatisfaction with the possible disruption to modern electronic communications and navigation systems caused by the insertion of a leap second has called into question the current definition of UTC. An extensive review of the background and issues relating to the leap second can be found in Nelson, et al (2001).


2017 ◽  
Vol 25 (2) ◽  
pp. 129-129 ◽  
Author(s):  
M Deininger ◽  
S Harrison ◽  
M Bar-Matthews ◽  
A Baker ◽  
W Duan ◽  
...  

2018 ◽  
Vol 64 (3) ◽  
pp. 455-464 ◽  
Author(s):  
Göran Nilsson ◽  
Jeffrey R Budd ◽  
Neil Greenberg ◽  
Vincent Delatour ◽  
Robert Rej ◽  
...  

Abstract A process is described to assess the commutability of a reference material (RM) intended for use as a calibrator, trueness control, or external quality assessment sample based on the difference in bias between an RM and clinical samples (CSs) measured using 2 different measurement procedures (MPs). This difference in bias is compared with a criterion based on a medically relevant difference between an RM and CS results to make a conclusion regarding commutability. When more than 2 MPs are included, the commutability is assessed pairwise for all combinations of 2 MPs. This approach allows the same criterion to be used for all combinations of MPs included in the assessment. The assessment is based on an error model that allows estimation of various random and systematic sources of error, including those from sample-specific effects of interfering substances. An advantage of this approach is that the difference in bias between an RM and the average bias of CSs at the concentration (i.e., amount of substance present or quantity value) of the RM is determined and its uncertainty estimated. An RM is considered fit for purpose for those MPs for which commutability is demonstrated.


1980 ◽  
Vol 10 (4) ◽  
pp. 317
Author(s):  
Sudargo Gautama

Sejak beberapa tahun Republik Indonesia telah menjadi anggota tetap dari UNCITRAL (UNITED NATIONS COMMISSION ON INTERNATIONAL TRADE LAW). Oleh karena itu beralasanlah bagi kita sebagai sarjana hukum Indonesia untuk lebih memperhatikan karya dan usaha' dari badan khusus PBB ini. Dalam sidangnya yang ke XI tahun 1978 UNCITRAL telah membentuk suatu kelompok karya mengenai "Tata Ekonomi Internasional Baru" (New International Economic Order, N.I.E.O.) yang sekarang sedang merupakan "topic" hangat dan disitir di mana-mana. Pada sidang UNCITRAL ke-XII bulan Juni 1979 Indonesia telah terpilih sebagai anggota Kelompok Kerja mengenai N.I.E.O. ini, mewakili Asia, bersama-sama dengan Jepang dan India, Terms of Reference dari kelompok kerja ini telah dibahas dalam sidang pertama Kelompok Kerja yang telah diadakan di New York pada tanggal 14-25 Januari 1980. Hasil daripada sidang Kelompok Kerja UNCITRAL Januari 1980 ini telah dibawa ke Jakarta dalam rangka pembahasan pertemuan ASIAN AFRICAN LEGAL CONSULTATIVE COMMITTEE (A.A.L.C.C.) pada bulan April 1980 yang baru lalu, dalam rangka Perayaan 25 tahun Konperensi Asia-Afrika. Oleh Trade Law Sub Committee dari AALCC telah dibahas pula dengan saksama pada pertemuan-pertemuan di Convention Hall Jakarta, hasil karya dari Working Group UNCITRAL tentang Tata Ekonomi Internasional Baru yang telah diadakan di New York pada bulan Januari 1980 ini. Kebetulan Professor K. Sono dari Jepang, yang telah bertindak sebagai Ketua dari Working Group UNCITRAL dalam sidang di New York tersebut hadir pula di Jakarta dan telah diangkat sebagai Rapporteur II dalam sidang AALCC di Jakarta ini.


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