Results 121 to 130 of about 478 (176)

Status of the ΛCDM theory: supporting evidence and anomalies. [PDF]

Philos Trans A Math Phys Eng Sci
Peebles PJE.
europepmc   +1 more source

Endovenous radiofrequency ablation vs laser ablation in patients with lower extremity varicose veins: A meta-analysis. [PDF]

J Vasc Surg Venous Lymphat Disord
Jiang W, Liang Y, Long Z, Hu M, Yang H, Qin X.   +5 more
europepmc   +1 more source

Aromaticity switching by quantum tunnelling. [PDF]

Chem Sci
Rodríguez-Sotelo SJ, Santoyo-Flores JJ, Młodzikowska-Pieńko K, Poranne RG, Kozuch S.   +4 more
europepmc   +1 more source

Optimizing electromagnetic wave propagation in cylindrical structures with beam-plasma interactions: A mode-matching approach. [PDF]

PLoS One
Rizvi S, Afzal M.
europepmc   +1 more source

Evidence for the gravity-driven and magnetically regularized gas flows feeding the massive protostellar cluster in Cepheus A. [PDF]

Sci Adv
Sandhyarani P, Eswaraiah C, Li D, Vázquez-Semadeni E, Gómez GC, Thieme TJ, Samal MR, Wang JW, Lai SP, Chen WP, Ojha DK.   +10 more
europepmc   +1 more source

Interpolated Retrieval of Relevant Material, Not Irrelevant Material, Enhances New Learning of a Video Lecture In-Person and Online. [PDF]

Behav Sci (Basel)
Assadipour Z, Ahn D, Chan JCK.
europepmc   +1 more source

Formation of hydrogen trioxide (HOOOH) in extraterrestrial ice analogs and its role as an oxidizer in prebiotic chemistry. [PDF]

Sci Adv
Bai X, Li C, Luo Y, Gong Q, Lu J, Yang J, Pan Y, Sun Z, Eckhardt AK, Sun R, Kaiser RI, Yang T.   +11 more
europepmc   +1 more source

Efficacy and safety of phototherapies for upper lip scars in cleft lip patients: a systematic review and meta-analysis. [PDF]

Int J Surg
Wei S, Zhang G, Wu Q, Song T, Yin N, Wang Y.   +5 more
europepmc   +1 more source

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Astrophysical Masers

2004
A review on strong masers and their assocn. with star formation, recent VLBI measurements of the structure and dynamics of methanol masers, the masers in the envelopes of evolved stars, and extragalactic masers. [on SciFinder (R)]
Booth, R. S., Diamond, P. J.
openaire   +1 more source

Frequency of the Hydrogen Maser

Nature, 1971
THE accuracy of the unperturbed frequency of the hydrogen maser is limited by the uncertainty of the wall shift caused by the storage bulb coating1. Different samples of nominally the same material have been found to give different shifts2 and so it seems that a frequency determination should include an independent measurement of wall shift.
L, Essen, R W, Donaldson, M J, Bangham, E G, Hope   +3 more
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