Journal of Research of the National Bureau of Standards, Volumes 91-92National Bureau of Standards, 1986 |
From inside the book
Results 1-5 of 100
Page 19
... mean activity coefficient from the Debye - Hückel equation were used to calculate the reference pH values . The mean activity coefficient value for these two solu- tions is 0.927 . The pH values of solutions 99-3 and 99-4 were ...
... mean activity coefficient from the Debye - Hückel equation were used to calculate the reference pH values . The mean activity coefficient value for these two solu- tions is 0.927 . The pH values of solutions 99-3 and 99-4 were ...
Page 21
... means bear any simple relationship , it is not surprisingly that a two - factor interaction is observed . The two ... mean activity coefficient is a nonlinear function of the molality , with decreasing slope at higher molalities [ 3 ] ...
... means bear any simple relationship , it is not surprisingly that a two - factor interaction is observed . The two ... mean activity coefficient is a nonlinear function of the molality , with decreasing slope at higher molalities [ 3 ] ...
Page 22
... mean activity coefficients of solu- tions , but also unpredictably change the electrode be- havior and hence the measured pH . The ruggedness tests have revealed , in addition to the above main ef- fects , three 2FI . These 2FI could ...
... mean activity coefficients of solu- tions , but also unpredictably change the electrode be- havior and hence the measured pH . The ruggedness tests have revealed , in addition to the above main ef- fects , three 2FI . These 2FI could ...
Page 26
... mean value of the 17 measurements and should be viewed as a point of reference only , not as the true value . Unlike B , the true pH values for these solutions have not been determined . Exhibited in figure 3 are the results of ...
... mean value of the 17 measurements and should be viewed as a point of reference only , not as the true value . Unlike B , the true pH values for these solutions have not been determined . Exhibited in figure 3 are the results of ...
Page 27
... Mean ! ! ? Mean ○ x x . D 4.0 3.9 3.9 T S 3.8 Figure 2 - pH values of " C , " " D , " and " E " referenced to buffer standards . pH 4.1 3.7 E 3.6 1 S0 > 50 So 3 . S Z Mean 3 5 7 9 11 13 15 17 Laboratory 4.4 U W X 30 50 4.3 C 4.2 4.1 22 ...
... Mean ! ! ? Mean ○ x x . D 4.0 3.9 3.9 T S 3.8 Figure 2 - pH values of " C , " " D , " and " E " referenced to buffer standards . pH 4.1 3.7 E 3.6 1 S0 > 50 So 3 . S Z Mean 3 5 7 9 11 13 15 17 Laboratory 4.4 U W X 30 50 4.3 C 4.2 4.1 22 ...
Other editions - View all
Common terms and phrases
analysis analytical atomic beam BIPM Bureau of Standards calculated calibration calorimeter cell Chem chemical components constant correction detector determined developed displacement effects electrode spacing electron energy Engineering enthalpy equation error estimated evaluation experiment experimental factor Federal finite element flaw frequency function Gaithersburg Green's function impact instrument interactions International ionization chamber isotopic Josephson effect Journal of Research Laboratory linewidth measurement ment metal method metrology microphone National Bureau obtained optical oxygen photodiode Phys physical plate precision procedure quantum Hall effect radiation range ratio S-wave sample scanning shown in figure solution specimen spectral SPRT's SQUID standard deviation Standard Reference Materials Standards Gaithersburg superconducting surements surface technical techniques temperature thermal thermopile tion trace element triple point tunneling uncertainty vacuum values voltage wave waveform wavelength
Popular passages
Page 241 - Monographs — Major contributions to the technical literature on various subjects related to the Bureau's scientific and technical activities. Handbooks — Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies. Special Publications — Include proceedings of conferences sponsored by NBS.
Page 263 - Certain commercial equipment, instruments, or materials are identified in this paper in order to adequately specify the experimental procedure. Such identification does not imply recommendation or endorsement by the National...
Page 112 - JOURNAL OF RESEARCH— The Journal of Research of the National Bureau of Standards reports NBS research and development in those disciplines of the physical and engineering sciences in which the Bureau is active. These include physics, chemistry, engineering, mathematics, and computer sciences. Papers cover a broad range of subjects, with major emphasis on measurement methodology, and the basic technology underlying standardization. Also included from time to time are survey articles on topics closely...
Page 345 - Studies or reports which are complete in themselves but restrictive in their treatment of a subject. Analogous to monographs but not so comprehensive in scope or definitive in treatment of the subject area. Often serve as a vehicle for final reports of work performed at NBS under the sponsorship of other
Page 78 - The Bureau's overall goal is to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides...
Page 112 - NBS administers this program as a supplement to the activities of the private sector standardizing organizations. Consumer Information Series — Practical information, based on NBS research and experience, covering areas of interest to the consumer. Easily understandable language and illustrations provide useful background knowledge for shopping in today's technological marketplace.
Page 15 - The metre is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p,0 and 5d5 of the krypton-86 atom.
Page 345 - Bureau conducts research and provides: (1) a basis for the Nation's physical measurement system, (2) scientific and technological services for industry and government, (3) a technical basis for equity in trade, and (4) technical services to promote public safety.
Page 41 - NBS pursuant to the Federal Property and Administrative Services Act of 1949 as amended, Public Law 89-306 (79 Stat. 1127), and as implemented by Executive Order 11717 (38 FR 12315, dated May 11, 1973) and Part 6 of Title 15 CFR (Code of Federal Regulations).
Page 311 - States of a complete and consistent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.