Results 41 to 50 of about 270 (136)

Photometric and Polarimetric Observations of AGB and Post AGB Stars [PDF]

Symposium - International Astronomical Union, 2003
Photometric and polarimetric observations of Long-Period Variables (LPVs), carried out at Byurakan Observatory over the last few years, have yielded some interesting results. In particular, one of the important results obtained for Mira type variables is that there is a certain correlation between brightness and polarization: the maximum degree of ...
N. D. Melikian, C. Magnan, A. A. Karapetian, J. M. Sarkissian   +3 more
openaire   +1 more source

A First Indication That Rainforest Vine Proliferation Does Not Enhance Predator–Prey Interactions on the Forest Floor

Entomologia Experimentalis et Applicata, Volume 174, Issue 10, Page 1229-1241, October 2026.
Vine proliferation is a widespread consequence of tropical forest disturbance, yet its effects on ground‐level predator–prey interactions remain poorly understood. Using plasticine caterpillars deployed on the rainforest floor in north Queensland, Australia, we show that overall predation rates were unaffected by vine‐to‐tree ratio. Instead, fine‐scale
Charlotte E. Raven, Helen F. Nahrung, Emma J. Mackintosh, Andrew R. Marshall, Andy G. Howe   +4 more
wiley   +1 more source

Stellar Evolution and Nucleosynthesis of Post-AGB Stars [PDF]

, 2001
I discuss recent new models of post-Asymptotic Giant Branch stellar evolution. These models aim to clarify the evolutionary origin and status of a variety of hydrogen-deficient post-AGB stars such as central stars of planetary nebulae of Wolf-Rayet spectral type, PG1159 stars or Sakurai's object.
openaire   +2 more sources

Host Call Frequency Drives Attractiveness to an Eavesdropping Micropredator

Ecology and Evolution, Volume 16, Issue 9, September 2026.
Acoustic sexual signals are vulnerable to interception by eavesdropping unintended receivers, and signals are thus influenced by interacting selection pressures. Frequencies of 0.5–1.4 kHz attracted frog‐biting midges (Corethrella spp.) and closely matched the lowest‐calling local frog species.
Timothy P. Cutajar, Alistair G. B. Poore, Jodi J. L. Rowley   +2 more
wiley   +1 more source

Verification of False Reactivity in HIV Rapid Diagnostic Tests and Its Translation Into the Three Tests Algorithm in Cameroon

Journal of Clinical Laboratory Analysis, Volume 40, Issue 18, September 2026.
Verification study enabled the detection of HIV false reactivity ranging from 0‐4% across rapid diagnostic tests. A reliable three‐tests algorithm ranked First Response HIV 1‐2‐0 Card, First Response HIV1+2/Syphilis Combo or STANDARD Q as suitable test 1 to mitigate false positive events. As countries move toward HIV elimination, implementing the three‐
Rogers Ajeh Awoh, Désiré Takou, Isidore Oscar Bienvenu Etogo Ondigui, Roger Onana, Etienne Kembou, Collins Chenwi, Daniel Mabongo, Grace Beloumou Angong, Laetitia Bissai, Aude Christelle Ka'e, Alex Durand Nka, Ezechiel Ngoufack Jagni Semengue, Nadine Fainguem, Daniele Simnoue, Florine Tsimene, Sandrine Djupsa, Jaurès Metambou, Aurelie Kengne, Arlette Messeh, Gilbert Tchatchoua, Naomi‐Karell Etame, Michel Tommo, Krystel Zam Nnomo, Edith Temgoua, Basil Yaba, Gregory Edie Halle Ekane, Carlo‐Federico Perno, Vittorio Colizzi, Nicaise Ndembi, Diaby Ousmane, Joelle Bouba Pamen, Alexis Ndjolo, Celine Lastrucci, Joseph Fokam, Malachie Manouada   +34 more
wiley   +1 more source

The remarkable evolution of the post-AGB star FG Sge [PDF]

New Astronomy Reviews, 1998
FG Sagittae is one of the most important key objects of post-AGB stellar evolutionary studies. As a consequence of a final helium shell flash, this unique variable has shown real evolutionary changes on human time scales during this century. The observational history was reviewed in comparison with predictions from evolutionary models.The central star ...
Jurcsik, Johanna, Montesinos, Benjamin
openaire   +2 more sources

Real‐World Evidence for Existing Anti‐Obesity Therapies—The Realities of Treatment Adherence, Tolerability, Access and Patient Satisfaction

Diabetes, Obesity and Metabolism, Volume 28, Issue S5, Page 3-26, September 2026.
ABSTRACT Background Obesity is associated with substantial cardiometabolic and psychosocial morbidity. Although randomized controlled trials demonstrate the efficacy of anti‐obesity therapies, outcomes in real‐world practice may be attenuated due to limited access, tolerability, adherence and insufficient long‐term support.
Sameer Kassem
wiley   +1 more source

A 1.2 mm MAMBO survey of post-AGB stars [PDF]

Astronomy & Astrophysics, 2006
We performed a millimetric survey of a sample of 24 post-AGB stars aimed to search for emission from circumstellar matter, in order to investigate the physical properties of the outer parts of the envelopes. The observations were conducted using the 37-channel Max-Planck Millimeter Bolometer array at the 30-meter IRAM telescope.
BUEMI, CARLA SIMONA, UMANA, Grazia Maria Gloria, TRIGILIO, CORRADO, LETO, PAOLO   +3 more
openaire   +3 more sources

Hydrogen‐Enhanced Grain Boundary Conductivity Explains High‐Conductivity Anomalies in Trans‐Lithospheric Shear Zones

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Magnetotelluric (MT) surveys reveal high electrical conductivity anomalies along major trans‐lithospheric shear zones. Given that trans‐lithospheric shear zones are proposed conduits for deep‐Earth volatiles, we employ molecular dynamics simulations to quantify H+ diffusivity and electrical conductivity at olivine grain boundaries.
Haoqing Wang, Kui Han, Chuanyu Zhang, Xiaofeng Tian, Xuben Wang, Simon Martin Clark   +5 more
wiley   +1 more source

Essential Oil Oleogels—Part II: Oleogels Containing Vanilla (Vanilla planifolia) Essential Oil

European Journal of Lipid Science and Technology, Volume 128, Issue 8, August 2026.
Vanilla essential oil‐containing oleogels reduced oil leakage while forming a weak gel‐like structure that partially stabilized liquid oils. The oleogels exhibited a soft, cohesive network suitable for semisolid food applications such as spreads and fillings.
Buket Aydeniz‐Guneser, Seda Kucuk
wiley   +1 more source