Results 21 to 30 of about 1,647,273 (261)

III. Researches in spectrum-analysis in connexion with the spectrum of the Sun [PDF]

open access: yesProceedings of the Royal Society of London, 1873
Abstract The author, after referring to the researches in which he has been engaged since January 1869 in conjunction with Dr. Frankland, refers to the evidence obtained by them as to the thickening and thinning of spectral lines by variations of pressure, and to the disappearance of certain lines when the method employed by them ...
openaire   +6 more sources

Near-Infrared Reflectivity of Superconducting FeSe Thin Films

open access: yesIEEE Photonics Journal, 2019
We present an investigation on the intrinsic optical properties of superconducting FeSe thin films deposited on CaF2 substrates. It is found that the samples respond strongly to the near-infrared (NIR) irradiation in different temperature regimes.
Yanmin Zhang   +12 more
doaj   +1 more source

Study on Fatigue Spectrum Analysis and Reliability Analysis of Multilayer Flexible Riser

open access: yesJournal of Marine Science and Engineering, 2022
Multilayer composite flexible risers have been widely used in engineering. However, this type of structure is complex, as there are influences between layers. Moreover, a range of uncertain factors need to be considered in fatigue analysis. Therefore, it
Jianxing Yu   +5 more
doaj   +1 more source

Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves

open access: yesFrontiers in Marine Science, 2022
As a “marine ecological engineer”, the oyster reefs not only perform important ecological functions, but also reduce the damage caused by waves to protective structures such as seawalls.
Beihan Jiang   +8 more
doaj   +1 more source

Vogel's “Spectrum Analysis” [PDF]

open access: yesNature, 1877
THE aim of the author in writing this book may best be described in his own words. He says in the introduction:— Practische Spectralanalyse irdischer stoffe. Von Dr. Hermann W. Vogel (Nordlingen: C. H. Beck.)
openaire   +2 more sources

Functional singular spectrum analysis [PDF]

open access: yesStat, 2021
In this paper, we develop a new extension of the singular spectrum analysis (SSA) called functional SSA to analyze functional time series. The new methodology is constructed by integrating ideas from functional data analysis and univariate SSA. Specifically, we introduce a trajectory operator in the functional world, which is equivalent to the ...
Hossein Haghbin   +4 more
openaire   +3 more sources

Sound Level Measurement and Spectrum Analysis in Full and Empty Various Social Spaces

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
The noise seen in different areas throughout human history has turned into a frequently complained problem with the increasing industry and technology. Unfortunately, the problem of noise has become a part of social life today.
Serden Başak, Kazım Onur Demirarslan
doaj   +1 more source

500-year growth cycle of stalagmite and its response to regional hydrological changes in Heshang cave, western Hubei

open access: yes地质科技通报, 2022
Stalagmitesare important high-resolution paleoclimate archives, and possess abundant physical, chemical and microbial paleoclimate proxies. Among of them, the growth rate (GR)of stalagmites quite popular because its easy access and non-destruction ...
Cuizhen Zhang   +3 more
doaj   +1 more source

Application of Raman spectroscopy in breast cancer surgery [PDF]

open access: yesKosin Medical Journal, 2023
The incidence of breast cancer is increasing worldwide. As cancer screening has become more widespread, the rate of early breast cancer detection has increased and treatment methods have changed.
Yikeun Kim, Sung Ui Jung, Jinhyuk Choi
doaj   +1 more source

An undamped oscillation model with twodifferent contact angles for a spherical dropletimpacting on solid surface

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
In order to further elucidate the dynamic theory of droplet oscillating on solid surface, a new handling method of contact angle of the droplet during the process of the oscillation was founded, which is based on the spherical model.
Shi Chen   +4 more
doaj   +1 more source

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