Results 101 to 110 of about 125,367 (265)

Micro Gondwana: soil and litter mesofauna in the subalpine and alpine of North‐West Nelson, southern New Zealand

New Zealand Journal of Zoology, Volume 52, Issue 5, Page 944-966, December 2025.
ABSTRACT Alpine ecosystems are vulnerable to the warming climate, yet alpine soil mesofauna remains the less studied part of NZ biodiversity. Here we present a survey of soil mesofauna communities of three mountain peaks in the Nelson‐Tasman and Marlborough regions of the South Island of New Zealand.
Maria A. Minor, Alastair W. Robertson
wiley   +1 more source

Genomic Analysis of Hair Sheep From West/Central Africa Reveals Unique Genetic Diversity and Ancestral Links to Breed Formation in the Caribbean

Molecular Ecology, Volume 34, Issue 24, December 2025.
ABSTRACT Cameroon Blackbelly sheep are a domestic breed of hair sheep from West/Central Africa. They are popular with small‐holder farmers in Cameroon as they are highly resilient to local environmental challenges and are prolific a‐seasonal breeders.
Pamela Wiener, Juliane Friedrich, Melissa M. Marr, Gustave Simo, Vincent N. Tanya, Keith T. Ballingall, Pavel Flegontov, Benjamin D. Rosen, Guillaume Sallé, Gordon Spangler, Curtis P. Van Tassell, Mazdak Salavati, Félix Meutchieye, Emily L. Clark   +13 more
wiley   +1 more source

On the nature of dwarf novae

The Astrophysical Journal, 1983
Observational data on mass-transfer rates and radii of disks indicate that the outer parts of disks in novae and nova-like binaries are sufficiently hot for stationary accretion; those in dwarf novae are too cool to avoid an accretion instability, while these in Z Cam systems are the borderline cases.
openaire   +1 more source

Tremendous outburst amplitude dwarf novae

The Astrophysical Journal, 1995
For many years, observers have noted the existence of a number of tremendous outburst amplitude dwarf novae. We present a summary of the known observational parameters for these exceptional systems. They show outburst amplitudes of 6-10 mag, have rare outbursts (interoutburst times being months to decades), and only seem to exist in dwarf novae with ...
Steve B. Howell, Paula Szkody, John K. Cannizzo   +2 more
openaire   +1 more source

Intelligent decision‐making for parameters of slurry shield tunneling based on multi‐objective particle swarm and genetic hybrid algorithm

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 31, Page 6493-6512, 29 December 2025.
Abstract In slurry shield tunneling, relying solely on human experience to adjust active control parameters manually often has limitations and can lead to safety hazards. Therefore, the intelligent decision‐making for parameters of slurry shield tunneling based on machine learning algorithms is of great significance.
Dalong Jin, Yi Yang, Yue Chen, Dajun Yuan, Fulin Li   +4 more
wiley   +1 more source

Millinovae: A New Class of Transient Supersoft X-Ray Sources without a Classical Nova Eruption

The Astrophysical Journal Letters
Some accreting binary systems containing a white dwarf (such as classical novae or persistent supersoft sources) are seen to emit low-energy X-rays with temperatures of  ∼ 10 ^6 K and luminosities exceeding 10 ^35 erg s ^−1 .
Przemek Mróz, Krzysztof Król, Hélène Szegedi, Philip Charles, Kim L. Page, Andrzej Udalski, David A. H. Buckley, Gulab Dewangan, Pieter Meintjes, Michał K. Szymański, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Radosław Poleski, Jan Skowron, Krzysztof Ulaczyk, Mariusz Gromadzki, Krzysztof Rybicki, Patryk Iwanek, Marcin Wrona, Mateusz J. Mróz   +20 more
doaj   +1 more source

Observations of Southern Dwarf Novae [PDF]

International Astronomical Union Colloquium, 1979
Preliminary results of spectroscopic and photometric data for five dwarf novae are presented : 1) V 436 Cen. The orbital period of 0.0669 days was determined from radial velocity variations. The RV half amplitude of the primary, K1. = 159 km/s, implies very small masses of M1 ≲ 0.20 M⊙ and M2 = 0.18 M⊙ for the binary components.2) Z Cha. Broad emission
openaire   +1 more source

Physiological roles of lignins – tuning cell wall hygroscopy and biomechanics

New Phytologist, Volume 248, Issue 6, Page 2674-2706, December 2025.
Summary Lignins constitute the second most abundant carbon‐storing biopolymers in the biosphere. These phenolic polymers accumulate in different concentrations, compositions, and localisations within and between cell wall layers and cell types. Lignins were acquired during plant terrestrialisation 450 million years ago, and the diversification of their
Edouard Pesquet, Igor Cesarino, Shinya Kajita, Katharina Pawlowski   +3 more
wiley   +1 more source

Observations of Five Southern-hemisphere Cataclysmic Binary Stars

The Astronomical Journal
We present observations and analyses of five little-studied cataclysmic binary stars in the southern celestial hemisphere. Our new observations are from the South African Astronomical Observatory.
John R. Thorstensen, Annabelle E. Niblett, Shreya Gandhi, Lauren P. Zanarini, Gavin D. Goss, Arnav Singh, Divik Verma, Ryan C. Hickox, Emmanuel A. Durodola, Jiaqi Martin Ying   +9 more
doaj   +1 more source

The Dwarf Nova PQ Andromedae

Publications of the Astronomical Society of the Pacific, 2005
We report a photometric study of the WZ Sagittae-type dwarf nova PQ Andromedae. The light curve shows strong (0.05 mag full amplitude) signals with periods of 1263(1) and 634(1) s, and a likely double-humped signal with P=80.6(2) min. We interpret the first two as nonradial pulsation periods of the underlying white dwarf, and the last as the orbital ...
Patterson, Joseph, Thorstensen, John, Armstrong, Eve, Henden, Arne, Hynes, Robert   +4 more
openaire   +2 more sources