Results 41 to 50 of about 1,047,569 (316)

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

Population Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda, Akira Maki, Tsutomu Mano, Hifumi Tsuruga, Hino Takafumi, Shinichi Horino   +5 more
wiley   +1 more source

Current Uncertainties in the Use of Cepheids as Distance Indicators

, 2003
The methods of calibrating the luminosities of galactic Cepheids and determining Cepheid reddenings are considered in some detail. Together with work on NGC4258 this suggests that the calibration presented is valid to about 0.1mag (s.e.) at least for ...
Feast, Michael
core   +1 more source

The distance to NGC1316 (Fornax A): yet another curious case [PDF]

, 2013
The distance of NGC1316, the brightest galaxy in Fornax, is an interesting test for the cosmological distance scale. First, because Fornax is the 2nd largest cluster of galaxies at
Blakeslee, John P., Brocato, Enzo, Cantiello, Michele, Della Valle, Massimo, Di Rico, Gianluca, Gilmozzi, Roberto, Grado, Aniello, Limatola, Luca, Raimondo, Gabriella   +8 more
core   +2 more sources

The Calibration of Novae as Distance Indicators

The Astrophysical Journal, 1995
The problem of the correct calibration of the maximum magnitude versus rate of decline relationship for Galactic novae is discussed, on the basis of the properties of the nova populations of M31 and the Large Magellanic Cloud (LMC). We have compared the "observed" maximum magnitude versus rate of decline (hereafter MMRD) distributions of M3 1 and LMC ...
DELLA VALLE, Massimo, Livio, Mario
openaire   +3 more sources

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

FEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu, Huseyn Babayev, Ismail Ogulur, Sena Ardicli, Yagiz Pat, Duygu Yazici, Bingjie Zhao, Lihong Chang, Xiaoqing Liu, Paolo D'Avino, Manru Li, Ceren Biçer, Fatma Hacer Kurtoğlu Babayev, Raja Dhir, Kari C. Nadeau, Marie‐Charlotte Brüggen, Mubeccel Akdis, Cezmi A. Akdis   +17 more
wiley   +1 more source

Globular Cluster Distance Determinations [PDF]

, 1998
The present status of the distance scale to Galactic globular clusters is reviewed. Six distance determination techniques which are deemed to be most reliable are discussed in depth. These different techniques are used to calibrate the absolute magnitude
A Renzini, A Renzini, AR Sandage, AR Sandage, AR Walker, AR Walker, B Chaboyer, B Chaboyer, B Chaboyer, B Paczyński, BW Carney, BW Carney, C Sneden, C Sneden, D Burnstein, D Minniti, E Brocato, E Carretta, F Caputo, F Fusi Pecci, F Grundahl, F Pont, G Kovćs, IN Reid, IN Reid, IN Reid, J Fernley, J Fernley, J Kaluzny, JR McVean, KM Cudworth, M Catelan, NR Simon, P Nissen, R Buonanno, R Buonanno, R Jimenez, R Zinn, R Zinn, RF Rees, RG Gratton, RP Kraft, RP Kraft, S Cassisi, V Caloi, VM Canuto, WE Harris, Y-W Lee, Y-W Lee, Y-W Lee   +49 more
core   +3 more sources

Rebirth of Novae as Distance Indicators Due to Efficient Large Telescopes

, 2002
Nova outbursts are the result of strong thermonuclear runaways on the surface of a white dwarf accreting Hydrogen-rich material from a small mass companion.
Della Valle, Massimo, Gilmozzi, Roberto
core   +2 more sources

A 4% Geometric Distance to the Galaxy NGC4258 from Orbital Motions in a Nuclear Gas Disk [PDF]

, 1999
The water maser in the mildly active nucleus in the nearby galaxy NGC4258 traces a thin, nearly edge-on, subparsec-scale Keplerian disk. Using the technique of very long baseline interferometry, we have detected the proper motions of these masers as they
A. Riess, AE Bragg, BF Madore, C. Henkel, G Cecil, GH Jacoby, J. M. Moran, J. R. Herrnstein, JA Zensus, JM Moran, JR Herrnstein, JR Herrnstein, JR Herrnstein, JR Herrnstein, L. J. Greenhill, LG Greenhill, LJ Greenhill, M Aaronson, M Eracleous, M Miyoshi, M Rowan-Robinson, M. Inoue, M. Miyoshi, N Nakai, N. Nakai, O-G Richter, P. J. Diamond, WD Watson   +27 more
core   +3 more sources

Thermostable neutral metalloprotease from Geobacillus sp. EA1 does not share thermolysin's preference for substrates with leucine at the P1′ position

FEBS Letters, EarlyView.
Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield, Torsten Kleffmann, David J. Saul, Sigurd M. Wilbanks   +3 more
wiley   +1 more source