Results 61 to 70 of about 32,756 (306)

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

Periodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis, Daniel Belstrøm, Sigrun Eick, Ulvi K. Gursoy, Anders Johansson, Eija Könönen   +5 more
wiley   +1 more source

Time delay of photons coupled to Weyl tensor in a regular phantom black hole

European Physical Journal C: Particles and Fields, 2020
Time delay of the photons coupled to the Weyl tensor in a regular phantom black hole is investigated in both weak and strong deflection gravitational lensing. We find that the time delay in the weak deflection lensing strongly depends on the phantom hair
Xu Lu, Yi Xie
doaj   +1 more source

Strong-lensing of Gravitational Waves by Galaxy Clusters [PDF]

Proceedings of the International Astronomical Union, 2017
AbstractDiscovery of strongly-lensed gravitational wave (GW) sources will unveil binary compact objects at higher redshifts and lower intrinsic luminosities than is possible without lensing. Such systems will yield unprecedented constraints on the mass distribution in galaxy clusters, measurements of the polarization of GWs, tests of General Relativity,
Christopher P. L. Berry, Matteo Bianconi, Andrew Robertson, Will M. Farr, John Veitch, Richard Massey, Johan Richard, Graham P. Smith, Mathilde Jauzac, Mathilde Jauzac, Mathilde Jauzac, Keren Sharon, Alberto Vecchio   +12 more
openaire   +5 more sources

Optical Detection of Volatile Organic Compounds: A Review of Methods and Functionalized Sensing Materials

Advanced Optical Materials, EarlyView.
The focus on volatile organic compounds (VOCs) detection is dictated by the increasing awareness of their impact on human health. In addition, VOCs are increasingly considered novel for early diagnosis of diseases. Among various types of VOC sensor devices, optical detectors play an essential role, offering excellent versatility, fast response time ...
Aleksandra Hernik, Jorid Smets, Zhe Wang, Yuliya Semenova, Jin‐Chong Tan, Rob Ameloot, Izabela Naydenova   +6 more
wiley   +1 more source

Anisotropic Second‐ and Third‐Harmonic Hermite–Gaussian Beam Generation with NbOI2 Holograms

Advanced Photonics Research, EarlyView.
Anisotropic second‐ and third‐harmonic Hermite–Gaussian (HG) beam generation is demonstrated with ultrathin NbOI2 grating holograms to produce the nonlinear HG01 and HG10 modes with high anisotropy ratios. The relative magnitudes of the second‐ and third‐order nonlinear susceptibility tensor elements of NbOI2 crystal are extracted. These demonstrations
Jayanta Deka, Jie Gao, Xiaodong Yang
wiley   +1 more source

Quasar Milli-lensing and Cold Dark Matter (TNG50) Subhaloes. I. Image Splitting

The Astrophysical Journal
We use numerical mass density profiles from the TNG50 simulation to study the impact of gravitational milli-lensing by dark matter subhaloes on the images of lensed quasars.
E. Mediavilla, J. Jiménez-Vicente, F. M. Heinze, J. Martín Camalich   +3 more
doaj   +1 more source

Can Strong Gravitational Lensing Constrain Dark Energy?

, 2007
We discuss the ratio of the angular diameter distances from the source to the lens, $D_{ds}$, and to the observer at present, $D_{s}$, for various dark energy models.
B. Ratra, J. Navarro, Kin-Wang Ng, L. F. Bloomfield Torres, M. Bartelmann, M. Fukugita, P. Kormann, P. Schneider, S. Sasaki, Seokcheon Lee, V. M. Dashevskii, Y. Zel’dovich   +11 more
core   +1 more source

What does a binary black hole merger look like? [PDF]

, 2015
We present a method of calculating the strong-field gravitational lensing caused by many analytic and numerical spacetimes. We use this procedure to calculate the distortion caused by isolated black holes and by numerically evolved black hole binaries ...
Bohn, Andy, Bunandar, Darius, Henriksson, Katherine, Hébert, François, Scheel, Mark A., Taylor, Nicholas W., Throwe, William   +6 more
core   +2 more sources

Energy Symmetry Breaking of Dirac and Weyl Fermions in Magnetized Spinning Conical Geometries

Advanced Theory and Simulations, EarlyView.
Exact solutions for relativistic fermions in magnetized, spinning conical geometries reveal defect‐induced symmetry breaking between fermion and antifermion energies. Energy levels depend on the magnetic field, background geometry, and fractionalized spin. When the defect's spin dominates, quantum effects diminish.
Abdullah Guvendi, Omar Mustafa
wiley   +1 more source

Possible Discrimination of Black Hole Origins from the Lensing Rate of DECIGO and B-DECIGO Sources

The Astrophysical Journal, 2023
In this paper, we forecast the expected detection rates and redshift distributions of gravitationally lensed gravitational waves (GWs) from three different mass distributions of primordial black holes (PBHs) and two stellar formation models of ...
Bin Liu, Zhengxiang Li, Shaoxin Zhao, Huan Zhou, He Gao   +4 more
doaj   +1 more source