Results 21 to 30 of about 738,063 (344)

New Physics and the Proton Radius Problem [PDF]

, 2012
Background: The recent disagreement between the proton charge radius extracted from Lamb shift measurements of muonic and electronic hydrogen invites speculation that new physics may be to blame.
Carlson, Carl E., Rislow, Benjamin C.
core   +3 more sources

Calculation of the One- and Two-Loop Lamb Shift for Arbitrary Excited Hydrogenic States [PDF]

, 2005
General expressions for quantum electrodynamic corrections to the one-loop self-energy [of order alpha(Zalpha)^6] and for the two-loop Lamb shift [of order alpha^2(Z\alpha)^] are derived. The latter includes all diagrams with closed fermion loops.
Andrzej Czarnecki, C. Itzykson, Krzysztof Pachucki, R. Barbieri, Ulrich D. Jentschura   +4 more
core   +4 more sources

Maximal Acceleration Corrections to the Lamb Shift of Hydrogen, Deuterium and He$^{+}$ [PDF]

, 1998
The maximal acceleration corrections to the Lamb shift of one--electron atoms are calculated in a non--relativistic approximation. They are compatible with experimental results, are in particularly good agreement with the $2S-2P$ Lamb shift in hydrogen ...
Berkeland, Brandt, Brandt, Caianiello, Caianiello, Caianiello, Caianiello, Caianiello, Caianiello, Caianiello, Caianiello, Caldirola, de Sabbata, de Sabbata, Eides, Frolov, G. Lambiase, G. Papini, G. Scarpetta, Gasperini, Gasperini, Gasperini, Gibbons, Hagley, Hand, Itzykson, Jentschura, Kuwata, Lambiase, Lundeen, Lundeen, Mashhoon, Pachucki, Pachucki, Papini, Papini, Papini, Parker, Pati, Polchikoc, Sanchez, Scarpetta, Simon, Toller, Toller, van Vijngaarden, van Vijngaarden, Vigier, Weitz, Weitz, Weitz, Wood, Wood, Wood, Wood, Wood   +55 more
core   +2 more sources

Clinical characteristics and outcomes of ST-segment elevation myocardial infarction in a low income setting in rural Bangladesh

International Journal of Cardiology: Heart & Vasculature, 2019
Background: In rural areas of Bangladesh, the majority of patients with ST segment elevation myocardial infarction (STEMI) have little access to reperfusion therapy.
Dong-Yeon Kim, Zubin Wala, Saidul Islam, Rabiul Islam, Mihong Ahn   +4 more
doaj   +1 more source

Book Review: Religious Conversion, Contemporary Practices and Controversies [PDF]

, 2001
A review of Religious Conversion, Contemporary Practices and Controversies edited by Christopher Lamb and Darrol ...
Neufeldt, Ronald
core   +2 more sources

Do consumers care about companies’ efforts in greening supply chains? Analyzing the role of protected values and the halo effect in product evaluation

Cleaner Logistics and Supply Chain, 2022
Widespread efforts are being made to mitigate environmental degradation driven by human activities. From a supply chain management perspective, companies aim at improving their environmental and organizational performance along their supply chain ...
Juan Pablo Loaiza-Ramírez, Carlos Eduardo Moreno-Mantilla, Torsten Reimer   +2 more
doaj   +1 more source

CsrA Regulates Swarming Motility and Carbohydrate and Amino Acid Metabolism in Vibrio alginolyticus

Microorganisms, 2021
Vibrio alginolyticus, like other vibrio species, is a widely distributed marine bacterium that is able to outcompete other species in variable niches where diverse organic matters are supplied. However, it remains unclear how these cells sense and adjust
Bing Liu, Qian Gao, Xin Zhang, Huizhen Chen, Ying Zhang, Yuehong Sun, Shan Yang, Chang Chen   +7 more
doaj   +1 more source

Lamb shift of non-degenerate energy level systems placed between two infinite parallel conducting plates

, 2012
The issue of the observability of the Lamb shift in systems with non-degenerate energy levels is put to question. To this end, we compute the Lamb shift of such systems in the electromagnetic environment provided by two infinite parallel conducting ...
Billaud, B., Truong, T. -T.
core   +2 more sources

The RMS Charge Radius of the Proton and Zemach Moments [PDF]

, 2011
On the basis of recent precise measurements of the electric form factor of the proton, the Zemach moments, needed as input parameters for the determination of the proton rms radius from the measurement of the Lamb shift in muonic hydrogen, are calculated.
Arrington, Bawin, Bernauer, Borie, Cloet, De Rújula, De Rújula, De Rújula, Eadie, Eides, Friar, Friar, Hyde, James, Jan C. Bernauer, Janssens, Manohar, Melnikov, Michael O. Distler, Mohr, Pachucki, Pachucki, Perdrisat, Pohl, Sick, Thomas Walcher, Udem, Vanderhaeghen, Zemach   +28 more
core   +1 more source

In a Randomized, Placebo-Controlled Cross-Over Study, Administration of 6 and 12 G Fortetropin® Does Not Reduce Serum Myostatin in Healthy Adult Dogs Over 72-Hours

Frontiers in Veterinary Science, 2021
Objective: To evaluate the effect of a single administration of 6 and 12 g of Fortetropin compared to placebo on serum myostatin in healthy, adult dogs over a 72-h period.Methods: Prospective, placebo-controlled, randomized, double-blind, crossover study.
Carmella C. Nugent Britt, Leilani X. Alvarez, Kenneth Lamb   +2 more
doaj   +1 more source