We report the 2018 self-consistent values of constants and conversion factors of physics and chemistry recommended by the Committee on Data of the International Science Council (CODATA). The ...recommended values can also be found at physics.nist.gov/constants. The values are based on a least-squares adjustment that takes into account all theoretical and experimental data available through 31 December 2018. A discussion of the major improvements as well as inconsistencies within the data is given. The former include a decrease in the uncertainty of the dimensionless fine-structure constant and a nearly two orders of magnitude improvement of particle masses expressed in units of kg due to the transition to the revised International System of Units (SI) with an exact value for the Planck constant. Further, because the elementary charge, Boltzmann constant, and Avogadro constant also have exact values in the revised SI, many other constants are either exact or have significantly reduced uncertainties. Inconsistencies remain for the gravitational constant and the muon magnetic-moment anomaly. The proton charge radius puzzle has been partially resolved by improved measurements of hydrogen energy levels.
This paper gives the 2014 self-consistent set of values of the constants and conversion factors of physics and chemistry recommended by the Committee on Data for Science and Technology (CODATA). ...These values are based on a least-squares adjustment that takes into account all data available up to 31 December 2014. Details of the data selection and methodology of the adjustment are described. The recommended values may also be found at physics.nist.gov/constants.
The emergence of these strains raises important questions about their prevalence and the correct treatment strategies and infection control measures. ...the prevalence of carbapenem-resistant K ...pneumoniae, hypervirulent K pneumoniae, and carbapenem-resistant hypervirulent K pneumoniae in the community in China is largely unknown. 1 AS Shon, TA Russo, Klebsiella pneumoniae, Future Microbiol, Vol. 7, 2012, 669-671 2 KE Holt, H Wertheim, RN Zadoks, Klebsiella pneumoniae, an urgent threat to public health, Proc Natl Acad Sci U S A, Vol. 112, 2015, E3574-E3581 3 D Gu, N Dong, Z Zheng, Klebsiella pneumoniae, in a Chinese hospital: a molecular epidemiological study, Lancet Infect Dis, 2017, published online August 29. 4 L Zhan, S Wang, Y Guo, Klebsiella pneumoniae, ST11 isolates with carbapenem resistance in a tertiary hospital in China, Front Cell Infect Microbiol, Vol. 7, 2017, 182 5 B Yao, X Xiao, F Wang, L Zhou, X Zhang, J Zhang, Klebsiella pneumoniae, isolates in a tertiary hospital in Beijing, China, Int J Infect Dis, Vol. 37, 2015, 107-112 6 R Zhang, D Lin, EW Chan, D Gu, GX Chen, S Chen, Klebsiella pneumoniae, strains in China, Antimicrob Agents Chemother, Vol. 60, 2015, 709-711 7 YY Liu, Y Wang, TR Walsh, Emergence of plasmid-mediated colistin resistance mechanism MCR-1 in animals and human beings in China: a microbiological and molecular biological study, Lancet Infect Dis, Vol. 16, 2016, 161-168 8 Y Zhang, C Zhao, Q Wang, Klebsiella pneumoniae, infection in China: geographic distribution, clinical characteristics, and antimicrobial resistance, Antimicrob Agents Chemother, Vol. 60, 2016, 6115-6120 9 Y Guo, S Wang, L Zhan, Klebsiella pneumoniae, isolates associated with invasive infections in China, Front Cell Infect Microbiol, Vol. 7, 2017, 24 10 Q Yan, M Zhou, M Zou, WE Liu, Klebsiella pneumoniae, induced ventilator-associated pneumonia in mechanically ventilated patients in China, Eur J Clin Microbiol Infect Dis, Vol. 35, 2016, 387-396
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