http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Borinsky, Mó (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Pratt, Kenneth W,Ortiz-Aparicio, Jose Luis,Matehuala-Sanchez, Francisco Javier,Pawlina, Monika,Kozlowski, Wladyslaw,Borges, Paulo P,da Silva Junior, Wiler B,Borinsky, Mó,nica B,Hernandez-Mabel P Springer-Verlag 2013 Metrologia Vol.50 No.-
<P>This key comparison (KC), CCQM-K73, was performed to demonstrate the capability of the participating National Metrology Institutes (NMIs) to measure the amount content of H<SUP>+</SUP>, ν<SUB>H<SUP>+</SUP></SUB>, in an HCl solution with a nominal ν<SUB>H<SUP>+</SUP></SUB> of 0.1 mol kg<SUP>−1</SUP>. The comparison was a joint activity of the Electrochemical Working Group (EAWG) and Inorganic Analysis Working Group (IAWG) of the CCQM and was coordinated by NIST (USA) and CENAM (Mexico).</P><P>The agreement of the results was not commensurate with the claimed uncertainties of the subset of participants that claimed small uncertainties for this determination. A workshop on technical issues relating to the CCQM-K73 measurements was conducted at the joint IAWG-EAWG meeting at the Bureau International des Poids et Mesures (BIPM), Paris (Sèvres) in April 2010. Several possible sources of bias were investigated, but none could explain the observed dispersion among the participants' results.</P><P>In the absence of a specific cause for the dispersion, the IAWG and EAWG decided to assign a Key Comparison Reference Value, KCRV, and standard uncertainty of the KCRV, u<SUB>KCRV</SUB>, based on the DerSimonian–Laird statistical estimator. The u<SUB>KCRV</SUB> is dominated by the between-laboratory scatter of results in CCQM-K73. The uncertainty estimates from the participants with the lowest reported uncertainties remain unsupported by this KC.</P><P>Main text.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.</P><P>The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
