scholarly journals Observation of the helicity-selection-rule suppressed decay of the χc2 charmonium state

2017 ◽  
Vol 96 (11) ◽  
Author(s):  
M. Ablikim ◽  
M. N. Achasov ◽  
S. Ahmed ◽  
X. C. Ai ◽  
O. Albayrak ◽  
...  
Keyword(s):  
Selection Rule ◽  
Charmonium State

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

scholarly journals Blood pressure and resting heart rate in 3-17-year-olds in Germany in 2003–2006 and 2014–2017

2021 ◽  
Author(s):  
Giselle Sarganas ◽  
Anja Schienkiewitz ◽  
Jonas D. Finger ◽  
Hannelore K. Neuhauser
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Children And Adolescents ◽  
Selection Rule ◽  
Age Groups ◽  
Resting Heart Rate ◽  
Cross Sectional ◽  
National Examination ◽  
School Aged Children ◽  
Analysis Measurement

AbstractTo track blood pressure (BP) and resting heart rate (RHR) in children and adolescents is important due to its associations with cardiovascular outcomes in the adulthood. Therefore, the aim of this study was to examine BP and RHR over a decade among children and adolescents living in Germany using national examination data. Cross-sectional data from 3- to 17-year-old national survey participants (KiGGS 2003–06, n = 14,701; KiGGS 2014–17, n = 3509) including standardized oscillometric BP and RHR were used for age- and sex-standardized analysis. Measurement protocols were identical with the exception of the cuff selection rule, which was accounted for in the analyses. Different BP and RHR trends were observed according to age-groups. In 3- to 6-year-olds adjusted mean SBP and DBP were significantly higher in 2014–2017 compared to 2003–2006 (+2.4 and +1.9 mm Hg, respectively), while RHR was statistically significantly lower by −3.8 bpm. No significant changes in BP or in RHR were observed in 7- to 10-year-olds over time. In 11- to 13-year-olds as well as in 14- to 17-year-olds lower BP has been observed (SBP −2.4 and −3.2 mm Hg, respectively, and DBP −1.8 and −1.7 mm Hg), while RHR was significantly higher (+2.7 and +3.7 bpm). BP trends did not parallel RHR trends. The downward BP trend in adolescents seemed to follow decreasing adult BP trends in middle and high-income countries. The increase in BP in younger children needs confirmation from other studies as well as further investigation. In school-aged children and adolescents, the increased RHR trend may indicate decreased physical fitness.

THE INTERACTION OF METHANOL WITH CLEAN AND OXYGEN-PRECOVERED Ag{111}: A RAIRS STUDY

1994 ◽  
Vol 01 (04) ◽  
pp. 673-676 ◽  
Author(s):  
W.S. SIM ◽  
P. GARDNER ◽  
D.A. KING
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Metal Surface ◽  
Atomic Oxygen ◽  
Selection Rule ◽  
Clean Surface

The adsorption of methanol on clean and oxygen-precovered Ag{111} has been investigated by high-resolution infrared spectroscopy. On the clean surface a highly inclined, associatively adsorbed methanol overlayer was detected. The presence of coadsorbed atomic oxygen results in the formation of a surface methoxy species, which is shown to have its C-O bond axis oriented normal to the surface by the application of the metal-surface selection rule.

Spatial Correlation Interpretation of Effects of As+ Implantation on the Raman Spectra of GaAs

1983 ◽  
Vol 27 ◽  
Author(s):  
D.E. Aspnes ◽  
K.K. Tiong ◽  
P.M. Amirtharaj ◽  
F.H. Pollak
Keyword(s):  
Spatial Correlation ◽  
Raman Spectra ◽  
Selection Rule ◽  
Phonon Mode ◽  
Red Shift ◽  
Correlation Model ◽  
Model Based ◽  
Ion Implanted

ABSTRACTThe red shift and asymmetric broadening of the LO phonon mode of ion-implanted GaAs are both described quantitatively by a spatial correlation model based on a damage-induced relaxation of the momentum selection rule previously used by Richter, Wang, and Ley to describe similar effects in microcrystalline Si. The success of the model for a qualitatively different disorder microstructure suggests it may be possible to evaluate average sizes of crystallographically perfect regions in semiconductors from the phonon lineshapes of their Raman spectra.

Experimental study of the selection rule ΔS = ΔQ in Koe3 and Koμ3 decays

1972 ◽  
Vol 50 (1) ◽  
pp. 194-204 ◽  
Author(s):  
G. Burgun ◽  
E. Lesquoy ◽  
A. Muller ◽  
E. Pauli ◽  
S. Zylberajch ◽  
...  
Keyword(s):  
Experimental Study ◽  
Selection Rule

An empirical selection rule for valence fluctuations

1985 ◽  
Vol 52 (1-4) ◽  
pp. 32-36 ◽  
Author(s):  
D. Wohlleben ◽  
B. Wittershagen
Keyword(s):  
Selection Rule ◽  
Valence Fluctuations
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